1
|
Crescioli S, Correa I, Ng J, Willsmore ZN, Laddach R, Chenoweth A, Chauhan J, Di Meo A, Stewart A, Kalliolia E, Alberts E, Adams R, Harris RJ, Mele S, Pellizzari G, Black ABM, Bax HJ, Cheung A, Nakamura M, Hoffmann RM, Terranova-Barberio M, Ali N, Batruch I, Soosaipillai A, Prassas I, Ulndreaj A, Chatanaka MK, Nuamah R, Kannambath S, Dhami P, Geh JLC, MacKenzie Ross AD, Healy C, Grigoriadis A, Kipling D, Karagiannis P, Dunn-Walters DK, Diamandis EP, Tsoka S, Spicer J, Lacy KE, Fraternali F, Karagiannis SN. B cell profiles, antibody repertoire and reactivity reveal dysregulated responses with autoimmune features in melanoma. Nat Commun 2023; 14:3378. [PMID: 37291228 PMCID: PMC10249578 DOI: 10.1038/s41467-023-39042-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 05/23/2023] [Indexed: 06/10/2023] Open
Abstract
B cells are known to contribute to the anti-tumor immune response, especially in immunogenic tumors such as melanoma, yet humoral immunity has not been characterized in these cancers to detail. Here we show comprehensive phenotyping in samples of circulating and tumor-resident B cells as well as serum antibodies in melanoma patients. Memory B cells are enriched in tumors compared to blood in paired samples and feature distinct antibody repertoires, linked to specific isotypes. Tumor-associated B cells undergo clonal expansion, class switch recombination, somatic hypermutation and receptor revision. Compared with blood, tumor-associated B cells produce antibodies with proportionally higher levels of unproductive sequences and distinct complementarity determining region 3 properties. The observed features are signs of affinity maturation and polyreactivity and suggest an active and aberrant autoimmune-like reaction in the tumor microenvironment. Consistent with this, tumor-derived antibodies are polyreactive and characterized by autoantigen recognition. Serum antibodies show reactivity to antigens attributed to autoimmune diseases and cancer, and their levels are higher in patients with active disease compared to post-resection state. Our findings thus reveal B cell lineage dysregulation with distinct antibody repertoire and specificity, alongside clonally-expanded tumor-infiltrating B cells with autoimmune-like features, shaping the humoral immune response in melanoma.
Collapse
Affiliation(s)
- Silvia Crescioli
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Isabel Correa
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Joseph Ng
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
- Research Department of Structural and Molecular Biology, University College London, London, UK
| | - Zena N Willsmore
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Roman Laddach
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
- Department of Informatics, Faculty of Natural, Mathematical and Engineering Sciences, King's College London, London, UK
| | - Alicia Chenoweth
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Jitesh Chauhan
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Ashley Di Meo
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Alexander Stewart
- School of Biosciences and Medicine, University of Surrey, Guildford, UK
| | - Eleni Kalliolia
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Elena Alberts
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Rebecca Adams
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Robert J Harris
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Silvia Mele
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Giulia Pellizzari
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Anna B M Black
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Heather J Bax
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Anthony Cheung
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Mano Nakamura
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Ricarda M Hoffmann
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Manuela Terranova-Barberio
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Niwa Ali
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Centre for Gene Therapy and Regenerative Medicine, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Ihor Batruch
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | | | - Ioannis Prassas
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Antigona Ulndreaj
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Miyo K Chatanaka
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Rosamund Nuamah
- Biomedical Research Centre, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Shichina Kannambath
- Biomedical Research Centre, Guy's and St. Thomas' NHS Foundation Trust, London, UK
- Genomics Facility, Institute of Cancer Research, London, UK
| | - Pawan Dhami
- Biomedical Research Centre, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Jenny L C Geh
- St John's Institute of Dermatology, Guy's, King's, and St. Thomas' Hospitals NHS Foundation Trust, London, UK
- Department of Plastic Surgery at Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | | | - Ciaran Healy
- Department of Plastic Surgery at Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Anita Grigoriadis
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - David Kipling
- School of Biosciences and Medicine, University of Surrey, Guildford, UK
| | - Panagiotis Karagiannis
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | - Eleftherios P Diamandis
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
- Department of Clinical Biochemistry, University Health Network, Toronto, ON, Canada
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural, Mathematical and Engineering Sciences, King's College London, London, UK
| | - James Spicer
- School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Katie E Lacy
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Franca Fraternali
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
- Research Department of Structural and Molecular Biology, University College London, London, UK
| | - Sophia N Karagiannis
- St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK.
| |
Collapse
|
2
|
Hall JA, Harris RJ, Zaidi A, Dabrera G, Dunbar JK. Risk of hospitalisation or death in households with a case of COVID-19 in England: an analysis using the HOSTED data set. Public Health 2022; 211:85-87. [PMID: 36058199 PMCID: PMC9359490 DOI: 10.1016/j.puhe.2022.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 11/18/2022]
Abstract
Objective To determine whether household contacts of confirmed cases of COVID-19 have an increased risk of hospitalisation or death. Methods We used the HOSTED data set of index cases of COVID-19 in England between June and November 2020, linked to Secondary Uses Service data on hospital episodes and Office for National Statistics’ mortality data. Multivariable logistic regression models of the odds of household contacts being hospitalised or dying within six weeks of an index case, adjusted for case type, age, sex and calendar month were calculated. Excess risk was determined by comparing the first six weeks after the index case with 6–12 weeks after the index case in a survival analysis framework. Results Index cases were more likely to be hospitalised or die than either secondary cases or non-cases, having adjusted for age and sex. There was an increased risk of hospitalisation for non-cases (adjusted hazard ratio (aHR) 1.10; 95% confidence interval (CI) 1.04, 1.16) and of death (aHR 1.57; 95% CI 1.14, 2.16) in the first six weeks after an index case, compared to 6–12 weeks after. Conclusion Risks of hospitalisation and mortality are predictably higher in cases compared to non-cases. The short-term increase in risks for non-case contacts following diagnosis of the index case may suggest incomplete case ascertainment among contacts, although this was relatively small.
Collapse
Affiliation(s)
- J A Hall
- UK Health Security Agency, London, UK
| | | | - A Zaidi
- UK Health Security Agency, London, UK
| | - G Dabrera
- UK Health Security Agency, London, UK
| | | |
Collapse
|
3
|
Harris RJ, Nakafuku K, Carden RG, Timmerman JC, Widenhoefer RA. Kinetics and Mechanisms of the Gold-Catalyzed Hydroamination of Axially Chiral 1-Aryl-1,2-butadienes with Aniline. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert J. Harris
- Department of Chemistry, Duke University French Family Science Center, Durham 27708, North Carolina, United States
| | - Kohki Nakafuku
- Department of Chemistry, Duke University French Family Science Center, Durham 27708, North Carolina, United States
| | - Robert G. Carden
- Department of Chemistry, Duke University French Family Science Center, Durham 27708, North Carolina, United States
| | - Jacob C. Timmerman
- Department of Chemistry, Duke University French Family Science Center, Durham 27708, North Carolina, United States
| | - Ross A. Widenhoefer
- Department of Chemistry, Duke University French Family Science Center, Durham 27708, North Carolina, United States
| |
Collapse
|
4
|
Harris RJ, Willsmore Z, Laddach R, Crescioli S, Chauhan J, Cheung A, Black A, Geh JLC, MacKenzie Ross AD, Healy C, Tsoka S, Spicer J, Lacy KE, Karagiannis SN. Enriched circulating and tumor-resident TGF-β + regulatory B cells in patients with melanoma promote FOXP3 + Tregs. Oncoimmunology 2022; 11:2104426. [PMID: 35909944 PMCID: PMC9336482 DOI: 10.1080/2162402x.2022.2104426] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
B cells are emerging as key players of anti-tumor adaptive immune responses. We investigated regulatory and pro-inflammatory cytokine-expressing B cells in patients with melanoma by flow cytometric intracellular cytokine, CyTOF, transcriptomic, immunofluorescence, single-cell RNA-seq, and B:T cell co-culture analyses. We found enhanced circulating regulatory (TGF-β+ and PD-L1+) and reduced pro-inflammatory TNF-α+ B cell populations in patients compared with healthy volunteers (HVs), including lower IFN-γ+:IL-4+ and higher TGF-β+:TNF-α+ B cell ratios in patients. TGF-β-expressing B cells in the melanoma tumor microenvironment assembled in clusters and interacted with T cells via lymphoid recruitment (SELL, CXCL13, CCL4, CD74) signals and with Tregs via CD47:SIRP-γ, and FOXP3-promoting Galectin-9:CD44. While reduced in tumors compared to blood, TNF-α-expressing B cells engaged in crosstalk with Tregs via TNF-α signaling and the ICOS/ICOSL axis. Patient-derived B cells promoted FOXP3+ Treg differentiation in a TGF-β-dependent manner, while sustaining expression of IFN-γ and TNF-α by autologous T-helper cells and promoting T-helper cell proliferation ex vivo, an effect further enhanced with anti-PD-1 checkpoint blockade. Our findings reveal cytokine-expressing B cell compartments skewed toward regulatory phenotypes in patient circulation and melanoma lesions, intratumor spatial localization, and bidirectional crosstalk between B and T cell subsets with immunosuppressive attributes.
Collapse
Affiliation(s)
- Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.,King's Health Partners Cancer Research UK Cancer Centre, King's College London, London, UK
| | - Zena Willsmore
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.,King's Health Partners Cancer Research UK Cancer Centre, King's College London, London, UK
| | - Roman Laddach
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.,Department of Informatics, Faculty of Natural, Mathematical and Engineering Sciences, King's College London, London, UK
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Jitesh Chauhan
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Anna Black
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Jenny L C Geh
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' NHS Foundation Trust, London, UK
| | | | - Ciaran Healy
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' NHS Foundation Trust, London, UK
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural, Mathematical and Engineering Sciences, King's College London, London, UK
| | - James Spicer
- School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Guy's Hospital, London, UK.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| |
Collapse
|
5
|
Harris RJ, Parimi N, Cawthon PM, Strotmeyer ES, Boudreau RM, Brach JS, Kwoh CK, Cauley JA. Associations of components of sarcopenia with risk of fracture in the Osteoporotic Fractures in Men (MrOS) study. Osteoporos Int 2022; 33:1815-1821. [PMID: 35380213 PMCID: PMC10011872 DOI: 10.1007/s00198-022-06390-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
Abstract
Our aim was to evaluate the associations between the individual components of sarcopenia and fracture types. In this cohort, the risk of experiencing any clinical, hip, or major osteoporotic fracture is greater in men with slow walking speed in comparison to normal walking speed. INTRODUCTION The association between the components of sarcopenia and fractures has not been clearly elucidated and has hindered the development of appropriate therapeutic interventions. Our aim was to evaluate the associations between the individual components of sarcopenia, specifically lean mass, strength, and physical performance and fracture (any fracture, hip fracture, major osteoporotic fracture) in the Osteoporotic Fractures in Men (MrOS) study. METHODS The Osteoporotic Fractures in Men study (MrOS) recruited 5995 men ≥ 65 years of age. We measured appendicular lean mass (ALM) by dual-energy X-ray absorptiometry (low as residual value < 20th percentile for the cohort), walking speed (fastest trial of usual pace, values < 0.8 m/s were low), and grip strength (max score of 2 trials, values < 30 kg were low). Information on fractures was assessed tri-annually over an average follow-up of 12 years and centrally adjudicated. Cox proportional hazard models estimated the hazard ratio (HR) (95% confidence intervals) for slow walking speed, low grip strength, and low lean mass. RESULTS Overall, 1413 men had a fracture during follow-up. Slow walking speed was associated with an increased risk for any HR = 1.39, 1.05-1.84; hip HR = 2.37, 1.54-3.63; and major osteoporotic, HR = 1.89, 1.34-2.67 in multi-variate-adjusted models. Low lean mass and low grip strength were not significantly associated with fracture. CONCLUSIONS In this cohort of older adult men, the risk of experiencing any, hip, or major osteoporotic fracture is greater in men with slow walking speed in comparison to men with normal walking speed, but low grip strength and low lean mass were not associated with fracture.
Collapse
Affiliation(s)
- R J Harris
- Department of Epidemiology Graduate School of Public Health University of Pittsburgh, Pittsburgh, PA, USA.
- VA Boston Healthcare System, Boston, MA, USA.
| | - N Parimi
- Research Institute, California Pacific Medical Center, San Francisco, CA, USA
| | - P M Cawthon
- Research Institute, California Pacific Medical Center, San Francisco, CA, USA
| | - E S Strotmeyer
- Department of Epidemiology Graduate School of Public Health University of Pittsburgh, Pittsburgh, PA, USA
| | - R M Boudreau
- Department of Epidemiology Graduate School of Public Health University of Pittsburgh, Pittsburgh, PA, USA
| | - J S Brach
- Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA, USA
| | - C K Kwoh
- Department of Medicine, University of Arizona, Tucson, AZ, USA
| | - J A Cauley
- Department of Epidemiology Graduate School of Public Health University of Pittsburgh, Pittsburgh, PA, USA
| |
Collapse
|
6
|
Karagiannis P, Correa I, Chauhan J, Cheung A, Dominguez-Rodriguez D, Terranova-Barberio M, Harris RJ, Crescioli S, Spicer J, Bokemeyer C, Lacy KE, Karagiannis SN. Innate stimulation of B cells ex vivo enhances antibody secretion and identifies tumour-reactive antibodies from cancer patients. Clin Exp Immunol 2022; 207:84-94. [PMID: 35020866 PMCID: PMC8802180 DOI: 10.1093/cei/uxab005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 09/26/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
Human B cells and their expressed antibodies are crucial in conferring immune protection. Identifying pathogen-specific antibodies following infection is possible due to enhanced humoral immunity against well-described molecules on the pathogen surface. However, screening for cancer-reactive antibodies remains challenging since target antigens are often not identified a priori and the frequency of circulating B cells recognizing cancer cells is likely very low. We investigated whether combined ex vivo culture of human B cells with three innate stimuli, interleukin-17 (IL-17), B-cell activation factor (BAFF), and the toll-like receptor 9 (TLR-9) agonist DNA motif CpG ODN 2006 (CpG), each known to activate B cells through different signalling pathways, promote cell activation, proliferation, and antibody production. Combined IL-17+BAFF+CpG prolonged B-cell survival and increased proliferation compared with single stimuli. IL-17+BAFF+CpG triggered higher IgG secretion, likely by activating differentiated, memory and class-switched CD19+CD20+CD27+IgD- B cells. Regardless of anti-FOLR antibody seropositive status, IL-17+BAFF+CpG combined with a monovalent tumour-associated antigen (folate receptor alpha [FOLR]) led to secreted antibodies recognizing the antigen and the antigen-expressing IGROV1 cancer cells. In a seropositive individual, FOLR stimulation favoured class-switched memory B-cell precursors (CD27-CD38-IgD-), class-switched memory B cells and anti-FOLR antibody production, while IL-17+BAFF+CpG combined with FOLR, promoted class-switched memory B-cell precursors and antibody-secreting (CD138+IgD-) plasma cells. Furthermore, IL-17+BAFF+CpG stimulation of peripheral blood B cells from patients with melanoma revealed tumour cell-reactive antibodies in culture supernatants. These findings suggest that innate signals stimulate B-cell survival and antibody production and may help identify low-frequency antigen-reactive humoral responses.
Collapse
Affiliation(s)
- Panagiotis Karagiannis
- Department of Oncology, Haematology and Bone Marrow Transplantation with Section of Pneumology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.,St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Isabel Correa
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Jitesh Chauhan
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK.,Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, UK
| | - Diana Dominguez-Rodriguez
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Manuela Terranova-Barberio
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - James Spicer
- School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, UK
| | - Carsten Bokemeyer
- Department of Oncology, Haematology and Bone Marrow Transplantation with Section of Pneumology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, UK.,Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, UK
| |
Collapse
|
7
|
Egbuniwe IU, Harris RJ, Nakamura M, Nestle FO, Akbar AN, Karagiannis SN, Lacy KE. B Lymphocytes Accumulate and Proliferate in Human Skin at Sites of Cutaneous Antigen Challenge. J Invest Dermatol 2021; 142:726-731.e4. [PMID: 34450137 PMCID: PMC8880055 DOI: 10.1016/j.jid.2021.06.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/21/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Isioma U Egbuniwe
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Translational Medical Sciences Unit, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom
| | - Mano Nakamura
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom
| | - Frank O Nestle
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Sanofi Immunology and Inflammation Research Therapeutic Area, Cambridge, Massachusetts, USA
| | - Arne N Akbar
- Division of Infection and Immunity, University College London, London, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom.
| |
Collapse
|
8
|
Harris RJ, Cheung A, Ng JCF, Laddach R, Chenoweth AM, Crescioli S, Fittall M, Dominguez-Rodriguez D, Roberts J, Levi D, Liu F, Alberts E, Quist J, Santaolalla A, Pinder SE, Gillett C, Hammar N, Irshad S, Van Hemelrijck M, Dunn-Walters DK, Fraternali F, Spicer JF, Lacy KE, Tsoka S, Grigoriadis A, Tutt ANJ, Karagiannis SN. Tumor-Infiltrating B Lymphocyte Profiling Identifies IgG-Biased, Clonally Expanded Prognostic Phenotypes in Triple-Negative Breast Cancer. Cancer Res 2021; 81:4290-4304. [PMID: 34224371 PMCID: PMC7611538 DOI: 10.1158/0008-5472.can-20-3773] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 03/23/2021] [Accepted: 06/14/2021] [Indexed: 12/29/2022]
Abstract
In breast cancer, humoral immune responses may contribute to clinical outcomes, especially in more immunogenic subtypes. Here, we investigated B lymphocyte subsets, immunoglobulin expression, and clonal features in breast tumors, focusing on aggressive triple-negative breast cancers (TNBC). In samples from patients with TNBC and healthy volunteers, circulating and tumor-infiltrating B lymphocytes (TIL-B) were evaluated. CD20+CD27+IgD- isotype-switched B lymphocytes were increased in tumors, compared with matched blood. TIL-B frequently formed stromal clusters with T lymphocytes and engaged in bidirectional functional cross-talk, consistent with gene signatures associated with lymphoid assembly, costimulation, cytokine-cytokine receptor interactions, cytotoxic T-cell activation, and T-cell-dependent B-cell activation. TIL-B-upregulated B-cell receptor (BCR) pathway molecules FOS and JUN, germinal center chemokine regulator RGS1, activation marker CD69, and TNFα signal transduction via NFκB, suggesting BCR-immune complex formation. Expression of genes associated with B lymphocyte recruitment and lymphoid assembly, including CXCL13, CXCR4, and DC-LAMP, was elevated in TNBC compared with other subtypes and normal breast. TIL-B-rich tumors showed expansion of IgG but not IgA isotypes, and IgG isotype switching positively associated with survival outcomes in TNBC. Clonal expansion was biased toward IgG, showing expansive clonal families with specific variable region gene combinations and narrow repertoires. Stronger positive selection pressure was present in the complementarity determining regions of IgG compared with their clonally related IgA in tumor samples. Overall, class-switched B lymphocyte lineage traits were conspicuous in TNBC, associated with improved clinical outcomes, and conferred IgG-biased, clonally expanded, and likely antigen-driven humoral responses. SIGNIFICANCE: Tumor-infiltrating B lymphocytes assemble in clusters, undergoing B-cell receptor-driven activation, proliferation, and isotype switching. Clonally expanded, IgG isotype-biased humoral immunity associates with favorable prognosis primarily in triple-negative breast cancers.
Collapse
MESH Headings
- Antigens, CD/biosynthesis
- Antigens, CD20/biosynthesis
- Antigens, Differentiation, T-Lymphocyte/biosynthesis
- B-Lymphocytes/metabolism
- B-Lymphocytes/pathology
- Base Sequence
- Cell Line, Tumor
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Immunoglobulin D/biosynthesis
- Immunoglobulin G/immunology
- Immunohistochemistry
- Lectins, C-Type/biosynthesis
- Lymphocytes/cytology
- Models, Statistical
- Phenotype
- Prognosis
- RNA-Seq
- Receptors, Antigen, B-Cell/metabolism
- Single-Cell Analysis
- Transcriptome
- Triple Negative Breast Neoplasms/immunology
- Triple Negative Breast Neoplasms/metabolism
- Tumor Necrosis Factor Receptor Superfamily, Member 7/biosynthesis
- Tumor Necrosis Factor-alpha/biosynthesis
- User-Computer Interface
Collapse
Affiliation(s)
- Robert J Harris
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- King's Health Partners Cancer Research UK Cancer Center, King's College London, London, United Kingdom
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Joseph C F Ng
- Randall Center for Cell and Molecular Biophysics, King's College London, London, United Kingdom
| | - Roman Laddach
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - Alicia M Chenoweth
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
| | - Matthew Fittall
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Diana Dominguez-Rodriguez
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
| | - James Roberts
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - Dina Levi
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Fangfang Liu
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Elena Alberts
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Jelmar Quist
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Aida Santaolalla
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- School of Cancer and Pharmaceutical Studies, Translational Oncology and Urology Research (TOUR), King's College London, London, United Kingdom
| | - Sarah E Pinder
- School of Cancer and Pharmaceutical Sciences, King's College London, Comprehensive Cancer Center, Guy's Hospital, London, United Kingdom
- King's Health Partners Cancer Biobank, King's College London, London, United Kingdom
| | - Cheryl Gillett
- School of Cancer and Pharmaceutical Sciences, King's College London, Comprehensive Cancer Center, Guy's Hospital, London, United Kingdom
- King's Health Partners Cancer Biobank, King's College London, London, United Kingdom
| | - Niklas Hammar
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sheeba Irshad
- School of Cancer and Pharmaceutical Sciences, King's College London, Comprehensive Cancer Center, Guy's Hospital, London, United Kingdom
| | - Mieke Van Hemelrijck
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- School of Cancer and Pharmaceutical Studies, Translational Oncology and Urology Research (TOUR), King's College London, London, United Kingdom
| | | | - Franca Fraternali
- Randall Center for Cell and Molecular Biophysics, King's College London, London, United Kingdom
| | - James F Spicer
- School of Cancer and Pharmaceutical Sciences, King's College London, Comprehensive Cancer Center, Guy's Hospital, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - Anita Grigoriadis
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| | - Andrew N J Tutt
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
- Breast Cancer Now Toby Robins Research Center, Institute of Cancer Research, London, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, United Kingdom.
- NIHR Biomedical Research Center at Guy's and St. Thomas' Hospitals and King's College London, Guy's Hospital, King's College London, London, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Center, London, United Kingdom
| |
Collapse
|
9
|
Harris RJ, Baginski SG, Bronstein Y, Kim S, Lohr J, Towey S, Velichkovich Z, Kabachenko T, Driscoll I, Baker B. Measurement of Endotracheal Tube Positioning on Chest X-Ray Using Object Detection. J Digit Imaging 2021; 34:846-852. [PMID: 34322753 DOI: 10.1007/s10278-021-00495-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 06/24/2021] [Accepted: 07/05/2021] [Indexed: 11/30/2022] Open
Abstract
Patients who are intubated with endotracheal tubes often receive chest x-ray (CXR) imaging to determine whether the tube is correctly positioned. When these CXRs are interpreted by a radiologist, they evaluate whether the tube needs to be repositioned and typically provide a measurement in centimeters between the endotracheal tube tip and carina. In this project, a large dataset of endotracheal tube and carina bounding boxes was annotated on CXRs, and a machine-learning model was trained to generate these boxes on new CXRs and to calculate a distance measurement between the tube and carina. This model was applied to a gold standard annotated dataset, as well as to all prospective data passing through our radiology system for two weeks. Inter-radiologist variability was also measured on a test dataset. The distance measurements for both the gold standard dataset (mean error = 0.70 cm) and prospective dataset (mean error = 0.68 cm) were noninferior to inter-radiologist variability (mean error = 0.70 cm) within an equivalence bound of 0.1 cm. This suggests that this model performs at an accuracy similar to human measurements, and these distance calculations can be used for clinical report auto-population and/or worklist prioritization of severely malpositioned tubes.
Collapse
Affiliation(s)
| | | | | | - Shwan Kim
- Virtual Radiologic, Eden Prairie, MN, USA
| | - Jerry Lohr
- Virtual Radiologic, Eden Prairie, MN, USA
| | | | | | | | | | | |
Collapse
|
10
|
Abstract
We introduce tensor-network stabilizer codes which come with a natural tensor-network decoder. These codes can correspond to any geometry, but, as a special case, we generalize holographic codes beyond those constructed from perfect or block-perfect isometries, and we give an example that corresponds to neither. Using the tensor-network decoder, we find a threshold of 18.8% for this code under depolarizing noise. We show that, for holographic codes, the exact tensor-network decoder (with no bond-dimension truncation) has polynomial complexity in the number of physical qubits, even for locally correlated noise, making this the first efficient decoder for holographic codes against Pauli noise and, also, a rare example of a decoder that is both efficient and exact.
Collapse
Affiliation(s)
- Terry Farrelly
- ARC Centre for Engineered Quantum Systems, School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Robert J Harris
- ARC Centre for Engineered Quantum Systems, School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Nathan A McMahon
- ARC Centre for Engineered Quantum Systems, School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
- Department of Physics, Friedrich-Alexander University Erlangen-Nürnberg (FAU), D-91058 Erlangen, Germany
| | - Thomas M Stace
- ARC Centre for Engineered Quantum Systems, School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
| |
Collapse
|
11
|
Roulstone V, Mansfield D, Harris RJ, Twigger K, White C, de Bono J, Spicer J, Karagiannis SN, Vile R, Pandha H, Melcher A, Harrington K. Antiviral antibody responses to systemic administration of an oncolytic RNA virus: the impact of standard concomitant anticancer chemotherapies. J Immunother Cancer 2021; 9:jitc-2021-002673. [PMID: 34301814 PMCID: PMC8728387 DOI: 10.1136/jitc-2021-002673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2021] [Indexed: 01/19/2023] Open
Abstract
Background Oncolytic reovirus therapy for cancer induces a typical antiviral response to this RNA virus, including neutralizing antibodies. Concomitant treatment with cytotoxic chemotherapies has been hypothesized to improve the therapeutic potential of the virus. Chemotherapy side effects can include immunosuppression, which may slow the rate of the antiviral antibody response, as well as potentially make the patient more vulnerable to viral infection. Method Reovirus neutralizing antibody data were aggregated from separate phase I clinical trials of reovirus administered as a single agent or in combination with gemcitabine, docetaxel, carboplatin and paclitaxel doublet or cyclophosphamide. In addition, the kinetics of individual antibody isotypes were profiled in sera collected in these trials. Results These data demonstrate preserved antiviral antibody responses, with only moderately reduced kinetics with some drugs, most notably gemcitabine. All patients ultimately produced an effective neutralizing antibody response. Conclusion Patients’ responses to infection by reovirus are largely unaffected by the concomitant drug treatments tested, providing confidence that RNA viral treatment or infection is compatible with standard of care treatments.
Collapse
Affiliation(s)
| | - David Mansfield
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Robert J Harris
- St John's Institute of Dermatology, Guy's Hospital, London, UK
| | - Katie Twigger
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Christine White
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Johann de Bono
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - James Spicer
- St John's Institute of Dermatology, Guy's Hospital, London, UK
| | | | - Richard Vile
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Hardev Pandha
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Alan Melcher
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Kevin Harrington
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| |
Collapse
|
12
|
Hall JA, Harris RJ, Zaidi A, Woodhall SC, Dabrera G, Dunbar JK. HOSTED-England's Household Transmission Evaluation Dataset: preliminary findings from a novel passive surveillance system of COVID-19. Int J Epidemiol 2021; 50:743-752. [PMID: 33837417 PMCID: PMC8083300 DOI: 10.1093/ije/dyab057] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Household transmission of SARS-CoV-2 is an important component of the community spread of the pandemic. Little is known about the factors associated with household transmission, at the level of the case, contact or household, or how these have varied over the course of the pandemic. METHODS The Household Transmission Evaluation Dataset (HOSTED) is a passive surveillance system linking laboratory-confirmed COVID-19 cases to individuals living in the same household in England. We explored the risk of household transmission according to: age of case and contact, sex, region, deprivation, month and household composition between April and September 2020, building a multivariate model. RESULTS In the period studied, on average, 5.5% of household contacts in England were diagnosed as cases. Household transmission was most common between adult cases and contacts of a similar age. There was some evidence of lower transmission rates to under-16s [adjusted odds ratios (aOR) 0.70, 95% confidence interval (CI) 0.66-0.74). There were clear regional differences, with higher rates of household transmission in the north of England and the Midlands. Less deprived areas had a lower risk of household transmission. After controlling for region, there was no effect of deprivation, but houses of multiple occupancy had lower rates of household transmission [aOR 0.74 (0.66-0.83)]. CONCLUSIONS Children are less likely to acquire SARS-CoV-2 via household transmission, and consequently there was no difference in the risk of transmission in households with children. Households in which cases could isolate effectively, such as houses of multiple occupancy, had lower rates of household transmission. Policies to support the effective isolation of cases from their household contacts could lower the level of household transmission.
Collapse
Affiliation(s)
- J A Hall
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
- UCL Institute for Women’s Health, London, United Kingdom
| | - R J Harris
- Statistics, Modelling and Economics Department, Public Health England, London, United Kingdom
| | - A Zaidi
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - S C Woodhall
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - G Dabrera
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - J K Dunbar
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| |
Collapse
|
13
|
Anagnos T, Trappen M, Tiong BCK, Feger T, Yerolatsitis S, Harris RJ, Lozi J, Jovanovic N, Birks TA, Vievard S, Guyon O, Gris-Sánchez I, Leon-Saval SG, Norris B, Haffert SY, Hottinger P, Blaicher M, Xu Y, Betters CH, Koos C, Coutts DW, Schwab C, Quirrenbach A. 3D-M3: high-spatial-resolution spectroscopy with extreme AO and 3D-printed micro-lenslets. Appl Opt 2021; 60:D108-D121. [PMID: 34263844 DOI: 10.1364/ao.420855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/16/2021] [Indexed: 06/13/2023]
Abstract
By combining integral field spectroscopy with extreme adaptive optics, we are now able to resolve objects close to the diffraction limit of large telescopes, exploring new science cases. We introduce an integral field unit designed to couple light with a minimal plate scale from the SCExAO facility at NIR wavelengths to a single-mode spectrograph. The integral field unit has a 3D-printed micro-lens array on top of a custom single-mode multi-core fiber, to optimize the coupling of light into the fiber cores. We demonstrate the potential of the instrument via initial results from the first on-sky runs at the 8.2 m Subaru Telescope with a spectrograph using off-the-shelf optics, allowing for rapid development with low cost.
Collapse
|
14
|
Maynard-Smith L, Brown CS, Harris RJ, Hodkinson P, Tamne S, Anderson SR, Zenner D. Contact tracing following in-flight exposure to TB: why the 8-hour rule? Int J Tuberc Lung Dis 2021; 25:593-595. [PMID: 34183108 DOI: 10.5588/ijtld.21.0141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- L Maynard-Smith
- National Infection Service, Public Health England, London, UK, Hospital for Tropical Diseases, London, UK
| | - C S Brown
- National Infection Service, Public Health England, London, UK, Department of Infection, Royal Free Hospital, London, UK
| | - R J Harris
- National Infection Service, Public Health England, London, UK
| | - P Hodkinson
- Aerospace Medicine Group, King´s College London, London, UK
| | - S Tamne
- National Infection Service, Public Health England, London, UK
| | - S R Anderson
- National Infection Service, Public Health England, London, UK
| | - D Zenner
- Institute for Global Health, University College London, London, UK
| |
Collapse
|
15
|
Harris RJ, Nakafuku K, Duncan AN, Carden RG, Timmerman JC, Widenhoefer RA. Kinetics and Mechanism of the Gold-Catalyzed Hydroamination of 1,1-Dimethylallene with N-Methylaniline. Chemistry 2021; 27:10377-10386. [PMID: 33951230 DOI: 10.1002/chem.202100741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Indexed: 12/17/2022]
Abstract
The mechanism of the intermolecular hydroamination of 3-methylbuta-1,2-diene (1) with N-methylaniline (2) catalyzed by (IPr)AuOTf has been studied by employing a combination of kinetic analysis, deuterium labelling studies, and in situ spectral analysis of catalytically active mixtures. The results of these and additional experiments are consistent with a mechanism for hydroamination involving reversible, endergonic displacement of N-methylaniline from [(IPr)Au(NHMePh)]+ (4) by allene to form the cationic gold π-C1,C2-allene complex [(IPr)Au(η2 -H2 C=C=CMe2 )]+ (I), which is in rapid, endergonic equilibrium with the regioisomeric π-C2,C3-allene complex [(IPr)Au(η2 -Me2 C=C=CH2 )]+ (I'). Rapid and reversible outer-sphere addition of 2 to the terminal allene carbon atom of I' to form gold vinyl complex (IPr)Au[C(=CH2 )CMe2 NMePh] (II) is superimposed on the slower addition of 2 to the terminal allene carbon atom of I to form gold vinyl complex (IPr)Au[C(=CMe2 )CH2 NMePh] (III). Selective protodeauration of III releases N-methyl-N-(3-methylbut-2-en-1-yl)aniline (3 a) with regeneration of 4. At high conversion, gold vinyl complex II is competitively trapped by an (IPr)Au+ fragment to form the cationic bis(gold) vinyl complex {[(IPr)Au]2 [C(=CH2 )CMe2 NMePh]}+ (6).
Collapse
Affiliation(s)
- Robert J Harris
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Kohki Nakafuku
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Alethea N Duncan
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Robert G Carden
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Jacob C Timmerman
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Ross A Widenhoefer
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| |
Collapse
|
16
|
Willsmore ZN, Coumbe BGT, Crescioli S, Reci S, Gupta A, Harris RJ, Chenoweth A, Chauhan J, Bax HJ, McCraw A, Cheung A, Osborn G, Hoffmann RM, Nakamura M, Laddach R, Geh JLC, MacKenzie-Ross A, Healy C, Tsoka S, Spicer JF, Josephs DH, Papa S, Lacy KE, Karagiannis SN. Combined anti-PD-1 and anti-CTLA-4 checkpoint blockade: Treatment of melanoma and immune mechanisms of action. Eur J Immunol 2021; 51:544-556. [PMID: 33450785 DOI: 10.1002/eji.202048747] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/23/2020] [Indexed: 12/19/2022]
Abstract
Cytotoxic T-lymphocyte associated protein-4 (CTLA-4) and the Programmed Death Receptor 1 (PD-1) are immune checkpoint molecules that are well-established targets of antibody immunotherapies for the management of malignant melanoma. The monoclonal antibodies, Ipilimumab, Pembrolizumab, and Nivolumab, designed to interfere with T cell inhibitory signals to activate immune responses against tumors, were originally approved as monotherapy. Treatment with a combination of immune checkpoint inhibitors may improve outcomes compared to monotherapy in certain patient groups and these clinical benefits may be derived from unique immune mechanisms of action. However, treatment with checkpoint inhibitor combinations also present significant clinical challenges and increased rates of immune-related adverse events. In this review, we discuss the potential mechanisms attributed to single and combined checkpoint inhibitor immunotherapies and clinical experience with their use.
Collapse
Affiliation(s)
- Zena N Willsmore
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Ben G T Coumbe
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Sara Reci
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Ayushi Gupta
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Alicia Chenoweth
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Jitesh Chauhan
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Heather J Bax
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Alexa McCraw
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Gabriel Osborn
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Ricarda M Hoffmann
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Mano Nakamura
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Roman Laddach
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - Jenny L C Geh
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Alastair MacKenzie-Ross
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Ciaran Healy
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - James F Spicer
- School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Debra H Josephs
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Sophie Papa
- Department of Medical Oncology, Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom
- ImmunoEngineering, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, SE1 9RT, United Kingdom
- Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| |
Collapse
|
17
|
Willsmore ZN, Harris RJ, Crescioli S, Hussein K, Kakkassery H, Thapa D, Cheung A, Chauhan J, Bax HJ, Chenoweth A, Laddach R, Osborn G, McCraw A, Hoffmann RM, Nakamura M, Geh JL, MacKenzie-Ross A, Healy C, Tsoka S, Spicer JF, Papa S, Barber L, Lacy KE, Karagiannis SN. B Cells in Patients With Melanoma: Implications for Treatment With Checkpoint Inhibitor Antibodies. Front Immunol 2021; 11:622442. [PMID: 33569063 PMCID: PMC7868381 DOI: 10.3389/fimmu.2020.622442] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
The contributions of the humoral immune response to melanoma are now widely recognized, with reports of positive prognostic value ascribed to tumor-infiltrating B cells (TIL-B) and increasing evidence of B cells as key predictors of patient response to treatment. There are disparate views as to the pro- and anti-tumor roles of B cells. B cells appear to play an integral role in forming tumor-associated tertiary lymphoid structures (TLSs) which can further modulate T cell activation. Expressed antibodies may distinctly influence tumor regulation in the tumor microenvironment, with some isotypes associated with strong anti-tumor immune response and others with progressive disease. Recently, B cells have been evaluated in the context of cancer immunotherapy. Checkpoint inhibitors (CPIs), targeting T cell effector functions, have revolutionized the management of melanoma for many patients; however, there remains a need to accurately predict treatment responders. Increasing evidence suggests that B cells may not be simple bystanders to CPI immunotherapy. Mature and differentiated B cell phenotypes are key positive correlates of CPI response. Recent evidence also points to an enrichment in activatory B cell phenotypes, and the contribution of B cells to TLS formation may facilitate induction of T cell phenotypes required for response to CPI. Contrastingly, specific B cell subsets often correlate with immune-related adverse events (irAEs) in CPI. With increased appreciation of the multifaceted role of B cell immunity, novel therapeutic strategies and biomarkers can be explored and translated into the clinic to optimize CPI immunotherapy in melanoma.
Collapse
Affiliation(s)
- Zena N Willsmore
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Khuluud Hussein
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Helen Kakkassery
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Deepika Thapa
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Jitesh Chauhan
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Heather J Bax
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom.,School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Alicia Chenoweth
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Roman Laddach
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom.,Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - Gabriel Osborn
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Alexa McCraw
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Ricarda M Hoffmann
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Mano Nakamura
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Jenny L Geh
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Alastair MacKenzie-Ross
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Ciaran Healy
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, United Kingdom
| | - James F Spicer
- School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Sophie Papa
- Department of Medical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,ImmunoEngineering, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Linda Barber
- School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, Guy's Hospital, London, United Kingdom.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| |
Collapse
|
18
|
Segura-Cox DM, Schmiedeke A, Pineda JE, Stephens IW, Fernández-López M, Looney LW, Caselli P, Li ZY, Mundy LG, Kwon W, Harris RJ. Four annular structures in a protostellar disk less than 500,000 years old. Nature 2020; 586:228-231. [PMID: 33028998 DOI: 10.1038/s41586-020-2779-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 08/05/2020] [Indexed: 11/09/2022]
Abstract
Annular structures (rings and gaps) in disks around pre-main-sequence stars have been detected in abundance towards class II protostellar objects that are approximately 1,000,000 years old1. These structures are often interpreted as evidence of planet formation1-3, with planetary-mass bodies carving rings and gaps in the disk4. This implies that planet formation may already be underway in even younger disks in the class I phase, when the protostar is still embedded in a larger-scale dense envelope of gas and dust5. Only within the past decade have detailed properties of disks in the earliest star-forming phases been observed6,7. Here we report 1.3-millimetre dust emission observations with a resolution of five astronomical units that show four annular substructures in the disk of the young (less than 500,000 years old)8 protostar IRS 63. IRS 63 is a single class I source located in the nearby Ophiuchus molecular cloud at a distance of 144 parsecs9, and is one of the brightest class I protostars at millimetre wavelengths. IRS 63 also has a relatively large disk compared to other young disks (greater than 50 astronomical units)10. Multiple annular substructures observed towards disks at young ages can act as an early foothold for dust-grain growth, which is a prerequisite of planet formation. Whether or not planets already exist in the disk of IRS 63, it is clear that the planet-formation process begins in the initial protostellar phases, earlier than predicted by current planet-formation theories11.
Collapse
Affiliation(s)
- Dominique M Segura-Cox
- Center for Astrochemical Studies, Max Planck Institute for Extraterrestrial Physics, Garching, Germany. .,Department of Astronomy, University of Illinois, Urbana, IL, USA.
| | - Anika Schmiedeke
- Center for Astrochemical Studies, Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - Jaime E Pineda
- Center for Astrochemical Studies, Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - Ian W Stephens
- Center for Astrophysics
- Harvard & Smithsonian, Cambridge, MA, USA
| | - Manuel Fernández-López
- Instituto Argentino de Radioastronomía (CCT-La Plata, CONICET; CICPBA), Buenos Aires, Argentina
| | - Leslie W Looney
- Department of Astronomy, University of Illinois, Urbana, IL, USA
| | - Paola Caselli
- Center for Astrochemical Studies, Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - Zhi-Yun Li
- Astronomy Department, University of Virginia, Charlottesville, VA, USA
| | - Lee G Mundy
- Astronomy Department and Laboratory for Millimeter-wave Astronomy, University of Maryland, College Park, MD, USA
| | - Woojin Kwon
- Department of Earth Science Education, Seoul National University (SNU), Seoul, Republic of Korea.,Korea Astronomy and Space Science Institute (KASI), Daejeon, Republic of Korea
| | - Robert J Harris
- Department of Astronomy, University of Illinois, Urbana, IL, USA
| |
Collapse
|
19
|
Nadolski A, Vieira JD, Sobrin JA, Kofman AM, Ade PAR, Ahmed Z, Anderson AJ, Avva JS, Basu Thakur R, Bender AN, Benson BA, Bryant L, Carlstrom JE, Carter FW, Cecil TW, Chang CL, Cheshire JR, Chesmore GE, Cliche JF, Cukierman A, de Haan T, Dierickx M, Ding J, Dutcher D, Everett W, Farwick J, Ferguson KR, Florez L, Foster A, Fu J, Gallicchio J, Gambrel AE, Gardner RW, Groh JC, Guns S, Guyser R, Halverson NW, Harke-Hosemann AH, Harrington NL, Harris RJ, Henning JW, Holzapfel WL, Howe D, Huang N, Irwin KD, Jeong O, Jonas M, Jones A, Korman M, Kovac J, Kubik DL, Kuhlmann S, Kuo CL, Lee AT, Lowitz AE, McMahon J, Meier J, Meyer SS, Michalik D, Montgomery J, Natoli T, Nguyen H, Noble GI, Novosad V, Padin S, Pan Z, Paschos P, Pearson J, Posada CM, Quan W, Rahlin A, Riebel D, Ruhl JE, Sayre JT, Shirokoff E, Smecher G, Stark AA, Stephen J, Story KT, Suzuki A, Tandoi C, Thompson KL, Tucker C, Vanderlinde K, Wang G, Whitehorn N, Yefremenko V, Yoon KW, Young MR. Broadband, millimeter-wave antireflection coatings for large-format, cryogenic aluminum oxide optics. Appl Opt 2020; 59:3285-3295. [PMID: 32400613 DOI: 10.1364/ao.383921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/25/2020] [Indexed: 06/11/2023]
Abstract
We present two prescriptions for broadband ($ {\sim} 77 - 252\;{\rm GHz} $), millimeter-wave antireflection coatings for cryogenic, sintered polycrystalline aluminum oxide optics: one for large-format (700 mm diameter) planar and plano-convex elements, the other for densely packed arrays of quasi-optical elements-in our case, 5 mm diameter half-spheres (called "lenslets"). The coatings comprise three layers of commercially available, polytetrafluoroethylene-based, dielectric sheet material. The lenslet coating is molded to fit the 150 mm diameter arrays directly, while the large-diameter lenses are coated using a tiled approach. We review the fabrication processes for both prescriptions, then discuss laboratory measurements of their transmittance and reflectance. In addition, we present the inferred refractive indices and loss tangents for the coating materials and the aluminum oxide substrate. We find that at 150 GHz and 300 K the large-format coating sample achieves $ (97 \pm 2)\% $ transmittance, and the lenslet coating sample achieves $ (94 \pm 3)\% $ transmittance.
Collapse
|
20
|
Kelly E, Gidley M, Sinigalliano C, Kumar N, Brand L, Harris RJ, Solo-Gabriele HM. Proliferation of microalgae and enterococci in the Lake Okeechobee, St. Lucie, and Loxahatchee watersheds. Water Res 2020; 171:115441. [PMID: 31927090 DOI: 10.1016/j.watres.2019.115441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/20/2019] [Accepted: 12/22/2019] [Indexed: 06/10/2023]
Abstract
This study is an analysis of relationships between microalgae (measured as chlorophyll a) and the fecal indicator bacteria enterococci. Microalgae blooms and enterococci exceedances have been occurring in Florida's recreational waterways for years. More recently, this has become a management concern as microalgae blooms have been attributed to potentially toxic cyanobacteria, and enterococci exceedances link to human infection/illness. Since both the microalgal blooms and bacterial exceedances occur in regions that receive managed freshwater releases from Lake Okeechobee, we hypothesized that both the blooms and exceedances are related to excess nutrients from the lake. Two experimental sites, on Lake Okeechobee and the St. Lucie River (downstream of the lake), plus a control site on the Loxahatchee River (which does not receive lake flow) were evaluated. The hypothesis was evaluated through three study components: 1) analysis of available long-term data from local environmental databases, 2) a year-long monthly sampling and analysis of chlorophyll a, enterococci, nutrients, and physical-chemical data, and 3) microcosm experiments with altered water/sediment conditions. Results support the hypothesis that excess nutrients play a role in both chlorophyll a and enterococci levels. For the St. Lucie River, analyses indicate that chlorophyll a correlated significantly with total Kjeldahl nitrogen (TKN) (R2 = 0.30, p = 0.008) and the strongest model for enterococci included nitrate-nitrite, TKN, total phosphorus, orthophosphorus, and turbidity in our long-term analysis (n = 39, R2 = 0.83, p ≤ 0.001). The microcosm results indicated that chlorophyll a and enterococci only persisted for 36 h in water from all sources, and that sediments from Lake Okeechobee may have allowed for sustained levels of chlorophyll a and enterococci levels. Overall similarities were observed in chlorophyll a and enterococci relationships with nutrient concentrations regardless of a Lake Okeechobee connection, as underscored by a study of flow out of the lake and downstream areas. This suggests that both nutrient-rich lake water and untreated surface water runoff contribute to microalgae blooms and enterococci exceedances in southeast Florida.
Collapse
Affiliation(s)
- E Kelly
- University of Miami Leonard and Jayne Abess Center for Ecosystem Science and Policy, Coral Gables, FL, USA; University of Miami Department of Civil, Architectural and Environmental Engineering, Coral Gables, FL, USA; NSF NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA
| | - M Gidley
- NSF NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA; National Oceanic and Atmospheric Administration (NOAA) Atlantic Oceanographic and Meteorological Laboratory (AOML) Environmental Microbiology, Miami, USA; University of Miami Cooperative Institute for Marine and Atmospheric Studies (CIMAS), Miami, USA
| | - C Sinigalliano
- NSF NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA; National Oceanic and Atmospheric Administration (NOAA) Atlantic Oceanographic and Meteorological Laboratory (AOML) Environmental Microbiology, Miami, USA
| | - N Kumar
- University of Miami Department of Public Health Sciences, Division of Environment & Public Health, Miami, FL, USA
| | - L Brand
- NSF NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA; University of Miami Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science (RSMAS), Miami, FL, USA
| | - R J Harris
- Loxahatchee River District, Jupiter, FL, USA
| | - H M Solo-Gabriele
- University of Miami Leonard and Jayne Abess Center for Ecosystem Science and Policy, Coral Gables, FL, USA; University of Miami Department of Civil, Architectural and Environmental Engineering, Coral Gables, FL, USA; NSF NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA.
| |
Collapse
|
21
|
Harris RJ, Park J, Nelson TAF, Iqbal N, Salgueiro DC, Bacsa J, MacBeth CE, Baik MH, Blakey SB. The Mechanism of Rhodium-Catalyzed Allylic C-H Amination. J Am Chem Soc 2020; 142:5842-5851. [PMID: 32119537 DOI: 10.1021/jacs.0c01069] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Herein, the mechanism of catalytic allylic C-H amination reactions promoted by Cp*Rh complexes is reported. Reaction kinetics experiments, stoichiometric studies, and DFT calculations demonstrate that the allylic C-H activation to generate a Cp*Rh(π-allyl) complex is viable under mild reaction conditions. The role of external oxidants in the catalytic cycle is elucidated. Quantum mechanical calculations, stoichiometric reactions, and cyclic voltammetry experiments concomitantly support an oxidatively induced reductive elimination process of the allyl fragment with an acetate ligand proceeding through a Rh(IV) intermediate. Stoichiometric oxidation and bulk electrolysis of the proposed π-allyl intermediate are also reported to support these analyses. Lastly, evidence supporting the amination of an allylic acetate intermediate is presented. We show that Cp*Rh(III)2+ behaves as a Lewis acid catalyst to complete the allylic amination reaction.
Collapse
Affiliation(s)
- Robert J Harris
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Jiyong Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Taylor A F Nelson
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Nafees Iqbal
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Daniel C Salgueiro
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - John Bacsa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Cora E MacBeth
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Simon B Blakey
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| |
Collapse
|
22
|
Harris RJ, Kim S, Lohr J, Towey S, Velichkovich Z, Kabachenko T, Driscoll I, Baker B. Classification of Aortic Dissection and Rupture on Post-contrast CT Images Using a Convolutional Neural Network. J Digit Imaging 2019; 32:939-946. [PMID: 31515752 PMCID: PMC6841906 DOI: 10.1007/s10278-019-00281-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Aortic dissections and ruptures are life-threatening injuries that must be immediately treated. Our national radiology practice receives dozens of these cases each month, but no automated process is currently available to check for critical pathologies before the images are opened by a radiologist. In this project, we developed a convolutional neural network model trained on aortic dissection and rupture data to assess the likelihood of these pathologies being present in prospective patients. This aortic injury model was used for study prioritization over the course of 4 weeks and model results were compared with clinicians' reports to determine accuracy metrics. The model obtained a sensitivity and specificity of 87.8% and 96.0% for aortic dissection and 100% and 96.0% for aortic rupture. We observed a median reduction of 395 s in the time between study intake and radiologist review for studies that were prioritized by this model. False-positive and false-negative data were also collected for retraining to provide further improvements in subsequent versions of the model. The methodology described here can be applied to a number of modalities and pathologies moving forward.
Collapse
Affiliation(s)
- Robert J Harris
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA.
| | - Shwan Kim
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| | - Jerry Lohr
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| | - Steve Towey
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| | | | - Tim Kabachenko
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| | - Ian Driscoll
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| | - Brian Baker
- Virtual Radiologic, 11995 Singletree Ln N, Eden Prairie, MN, 55344, USA
| |
Collapse
|
23
|
Ellingson BM, Abrey LE, Garcia J, Chinot O, Wick W, Saran F, Nishikawa R, Henriksson R, Mason WP, Harris RJ, Leu K, Woodworth DC, Mehta A, Raymond C, Chakhoyan A, Pope WB, Cloughesy TF. Post-chemoradiation volumetric response predicts survival in newly diagnosed glioblastoma treated with radiation, temozolomide, and bevacizumab or placebo. Neuro Oncol 2019; 20:1525-1535. [PMID: 29897562 DOI: 10.1093/neuonc/noy064] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background In the current study we used contrast-enhanced T1 subtraction maps to test whether early changes in enhancing tumor volume are prognostic for overall survival (OS) in newly diagnosed glioblastoma (GBM) patients treated with chemoradiation with or without bevacizumab (BV). Methods Seven hundred ninety-eight patients (404 BV and 394 placebo) with newly diagnosed GBM in the AVAglio trial (NCT00943826) had baseline MRI scans available, while 337 BV-treated and 269 placebo-treated patients had >4 MRI scans for response evaluation. The volume of contrast-enhancing tumor was quantified and used for subsequent analyses. Results A decrease in tumor volume during chemoradiation was associated with a longer OS in the placebo group (hazard ratio [HR] = 1.578, P < 0.0001) but not BV-treated group (HR = 1.135, P = 0.4889). Results showed a higher OS in patients on the placebo arm with a sustained decrease in tumor volume using a post-chemoradiation baseline (HR = 1.692, P = 0.0005), and a trend toward longer OS was seen in BV-treated patients (HR = 1.264, P = 0.0724). Multivariable Cox regression confirmed that sustained response or stable disease was prognostic for OS (HR = 0.7509, P = 0.0127) when accounting for age (P = 0.0002), KPS (P = 0.1516), postsurgical tumor volume (P < 0.0001), O6-methylguanine-DNA methyltransferase status (P < 0.0001), and treatment type (P = 0.7637) using the post-chemoradiation baseline. Conclusions The post-chemoradiation timepoint is a better baseline for evaluating efficacy in newly diagnosed GBM. Early progression during the maintenance phase is consequential in predicting OS, supporting the use of progression-free survival rates as a meaningful surrogate for GBM.
Collapse
Affiliation(s)
- Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, USA.,Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,UCLA Brain Research Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | | | | | - Olivier Chinot
- Aix-Marseille University, AP-HM, Service de Neuro-Oncologie, CHU Timone, Marseille, France
| | - Wolfgang Wick
- Clinical Cooperation Unit Neuro-oncology, German Cancer Consortium, German Cancer Research Center, Heidelberg, Germany
| | - Frank Saran
- The Royal Marsden NHS Foundation Trust, Sutton, UK
| | | | - Roger Henriksson
- Regional Cancer Center Stockholm, Stockholm, Sweden and Umeå University, Umeå, Sweden
| | | | - Robert J Harris
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,MedQIA, LLC, Los Angeles, California, USA
| | - Kevin Leu
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, USA
| | - Davis C Woodworth
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Arnav Mehta
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Catalina Raymond
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Ararat Chakhoyan
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Whitney B Pope
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Timothy F Cloughesy
- UCLA Brain Research Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.,Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| |
Collapse
|
24
|
Ellingson BM, Aftab DT, Schwab GM, Hessel C, Harris RJ, Woodworth DC, Leu K, Chakhoyan A, Raymond C, Drappatz J, de Groot J, Prados MD, Reardon DA, Schiff D, Chamberlain M, Mikkelsen T, Desjardins A, Holland J, Ping J, Weitzman R, Wen PY, Cloughesy TF. Volumetric response quantified using T1 subtraction predicts long-term survival benefit from cabozantinib monotherapy in recurrent glioblastoma. Neuro Oncol 2019; 20:1411-1418. [PMID: 29660005 DOI: 10.1093/neuonc/noy054] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background To overcome challenges with traditional response assessment in anti-angiogenic agents, the current study uses T1 subtraction maps to quantify volumetric radiographic response in monotherapy with cabozantinib, an orally bioavailable tyrosine kinase inhibitor with activity against vascular endothelial growth factor receptor 2 (VEGFR2), hepatocyte growth factor receptor (MET), and AXL, in an open-label, phase II trial in patients with recurrent glioblastoma (GBM) (NCT00704288). Methods A total of 108 patients with adequate imaging data and confirmed recurrent GBM were included in this retrospective study from a phase II multicenter trial of cabozantinib monotherapy (XL184-201) at either 100 mg (N = 87) or 140 mg (N = 21) per day. Contrast enhanced T1-weighted digital subtraction maps were used to define volume of contrast-enhancing tumor at baseline and subsequent follow-up time points. Volumetric radiographic response (>65% reduction in contrast-enhancing tumor volume from pretreatment baseline tumor volume sustained for more than 4 wk) was tested as an independent predictor of overall survival (OS). Results Volumetric response rate for all therapeutic doses was 38.9% (41.4% and 28.6% for 100 mg and 140 mg doses, respectively). A log-linear association between baseline tumor volume and OS (P = 0.0006) and a linear correlation between initial change in tumor volume and OS (P = 0.0256) were observed. A significant difference in OS was observed between responders (median OS = 20.6 mo) and nonresponders (median OS = 8.0 mo) (hazard ratio [HR] = 0.3050, P < 0.0001). Multivariable analyses showed that continuous measures of baseline tumor volume (HR = 1.0233, P < 0.0001) and volumetric response (HR = 0.2240, P < 0.0001) were independent predictors of OS. Conclusions T1 subtraction maps provide value in determining response in recurrent GBM treated with cabozantinib and correlated with survival benefit.
Collapse
Affiliation(s)
- Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | | | | | | | - Robert J Harris
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Davis C Woodworth
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Kevin Leu
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Ararat Chakhoyan
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Catalina Raymond
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Jan Drappatz
- Department of Neurology and Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - John de Groot
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael D Prados
- Department of Neurosurgery, University of California San Francisco (UCSF), San Francisco, California
| | - David A Reardon
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - David Schiff
- Neuro-Oncology Center, University of Virginia Health System, Charlottesville, Virginia
| | - Marc Chamberlain
- Department of Neurology, University of Washington, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | | | - Annick Desjardins
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina
| | | | - Jerry Ping
- Exelixis, South San Francisco, California
| | | | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Timothy F Cloughesy
- UCLA Neuro-Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| |
Collapse
|
25
|
Burman JS, Harris RJ, Farr CMB, Bacsa J, Blakey SB. Rh(III) and Ir(III)Cp* Complexes Provide Complementary Regioselectivity Profiles in Intermolecular Allylic C–H Amidation Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01338] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jacob S. Burman
- Department of Chemistry, Emory University
, Atlanta Georgia 30322, United States
| | - Robert J. Harris
- Department of Chemistry, Emory University
, Atlanta Georgia 30322, United States
| | - Caitlin M. B. Farr
- Department of Chemistry, Emory University
, Atlanta Georgia 30322, United States
| | - John Bacsa
- Department of Chemistry, Emory University
, Atlanta Georgia 30322, United States
| | - Simon B. Blakey
- Department of Chemistry, Emory University
, Atlanta Georgia 30322, United States
| |
Collapse
|
26
|
Ong KJ, van Hoek AJ, Harris RJ, Figueroa J, Waters L, Chau C, Croxford S, Kirwan P, Brown A, Postma MJ, Gill ON, Delpech V. HIV care cost in England: a cross-sectional analysis of antiretroviral treatment and the impact of generic introduction. HIV Med 2019; 20:377-391. [PMID: 31034159 DOI: 10.1111/hiv.12725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Reliable and timely HIV care cost estimates are important for policy option appraisals of HIV treatment and prevention strategies. As HIV clinical management and outcomes have changed, we aimed to update profiles of antiretroviral (ARV) usage pattern, patent/market exclusivity details and management costs in adults (≥ 18 years old) accessing HIV specialist care in England. METHODS The data reported quarterly to the HIV and AIDS Reporting System in England was used to identify ARV usage pattern, and were combined with British National Formulary (BNF) prices, non-ARV care costs and patent/market exclusivity information to generate average survival-adjusted lifetime care costs. The cumulative budget impact from 2018 to the year in which all current ARVs were expected to lose market exclusivity was calculated for a hypothetical 85 000 (± 5000) person cohort, which provided an illustration of potential financial savings afforded by bioequivalent generic switches. Price scenarios explored BNF70 (September 2015) prices and generics at 10/20/30/50% of proprietary prices. The analyses took National Health Service (NHS) England's perspective (as the payer), and results are presented in 2016/2017 British pounds. RESULTS By 2033, most currently available ARVs would lose market exclusivity; that is, generics could be available. Average per person lifetime HIV cost was ~£200 000 (3.5% annual discount) or ~£400 000 (undiscounted), reducing to ~£70 000 (3.5% annual discount; ~£120 000 undiscounted) with the use of generics (assuming that generics cost 10% of proprietary prices). The cumulative budget to cover 85 000 (± 5000) persons for 16 years (2018-2033) was £10.5 (± 0.6) billion, reducing to £3.6 (± 0.2) billion with the use of generics. CONCLUSIONS HIV management costs are high but financial efficiency could be improved by optimizing generic use for treatment and prevention to mitigate the high cost of lifelong HIV treatment. Earlier implementation of generics as they become available offers the potential to maximize the scale of the financial savings.
Collapse
Affiliation(s)
- K J Ong
- National Infection Service, Public Health England, London, UK
| | - A J van Hoek
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK.,Centre for Infectious Diseases, Rijksinstituut voor Volksgezondheid en Milieu, RIVM (Netherlands National Institute for Public Health and the Environment), Bilthoven, The Netherlands
| | - R J Harris
- National Infection Service, Public Health England, London, UK
| | | | - L Waters
- Central and North West London NHS Foundation Trust, London, UK
| | - C Chau
- National Infection Service, Public Health England, London, UK
| | - S Croxford
- National Infection Service, Public Health England, London, UK
| | - P Kirwan
- National Infection Service, Public Health England, London, UK
| | - A Brown
- National Infection Service, Public Health England, London, UK
| | - M J Postma
- Unit of Pharmacotherapy, Epidemiology & Economics, Department of Pharmacy, University of Groningen, Groningen, The Netherlands.,Department of Health Sciences, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Economics, Econometrics & Finance, Faculty of Economics & Business, University of Groningen, Groningen, The Netherlands
| | - O N Gill
- National Infection Service, Public Health England, London, UK
| | - V Delpech
- National Infection Service, Public Health England, London, UK
| |
Collapse
|
27
|
Nakamura M, Bax HJ, Scotto D, Souri EA, Sollie S, Harris RJ, Hammar N, Walldius G, Winship A, Ghosh S, Montes A, Spicer JF, Van Hemelrijck M, Josephs DH, Lacy KE, Tsoka S, Karagiannis SN. Immune mediator expression signatures are associated with improved outcome in ovarian carcinoma. Oncoimmunology 2019; 8:e1593811. [PMID: 31069161 PMCID: PMC6492968 DOI: 10.1080/2162402x.2019.1593811] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/17/2019] [Accepted: 03/02/2019] [Indexed: 01/04/2023] Open
Abstract
Immune and inflammatory cascades may play multiple roles in ovarian cancer. We aimed to identify relationships between expression of immune and inflammatory mediators and patient outcomes. We interrogated differential gene expression of 44 markers and marker combinations (n = 1,978) in 1,656 ovarian carcinoma patient tumors, alongside matched 5-year overall survival (OS) data in silico. Using machine learning methods, we investigated whether genomic expression of these 44 mediators can discriminate between malignant and non-malignant tissues in 839 ovarian cancer and 115 non-malignant ovary samples. We furthermore assessed inflammation markers in 289 ovarian cancer patients’ sera in the Swedish Apolipoprotein MOrtality-related RISk (AMORIS) cohort. Expression of the 44 mediators could discriminate between malignant and non-malignant tissues with at least 96% accuracy. Higher expression of classical Th1, Th2, Th17, anti-parasitic/infection and M1 macrophage mediator signatures were associated with better OS. Contrastingly, inflammatory and angiogenic mediators, CXCL-12, C-reactive protein (CRP) and platelet-derived growth factor subunit A (PDGFA) were negatively associated with OS. Of the serum inflammatory markers in the AMORIS cohort, women with ovarian cancer who had elevated levels of haptoglobin (≥1.4 g/L) had a higher risk of dying from ovarian cancer compared to those with haptoglobin levels <1.4 g/L (HR = 2.09, 95% CI:1.38–3.16). Our findings indicate that elevated “classical” immune mediators, associated with response to pathogen antigen challenge, may confer immunological advantage in ovarian cancer, while inflammatory markers appear to have negative prognostic value. These highlight associations between immune protection, inflammation and clinical outcomes, and offer opportunities for patient stratification based on secretome markers.
Collapse
Affiliation(s)
- Mano Nakamura
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Heather J Bax
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK.,School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - Daniele Scotto
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Elmira Amiri Souri
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, UK
| | - Sam Sollie
- King's College London, School of Cancer and Pharmaceutical Sciences, Translational Oncology & Urology Research (TOUR), London, UK
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Niklas Hammar
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Goran Walldius
- Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anna Winship
- Departments of Medical Oncology and Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Sharmistha Ghosh
- Departments of Medical Oncology and Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ana Montes
- Departments of Medical Oncology and Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - James F Spicer
- School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - Mieke Van Hemelrijck
- King's College London, School of Cancer and Pharmaceutical Sciences, Translational Oncology & Urology Research (TOUR), London, UK.,Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Debra H Josephs
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK.,School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural and Mathematical Sciences, King's College London, London, UK
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| |
Collapse
|
28
|
Khair DO, Bax HJ, Mele S, Crescioli S, Pellizzari G, Khiabany A, Nakamura M, Harris RJ, French E, Hoffmann RM, Williams IP, Cheung A, Thair B, Beales CT, Touizer E, Signell AW, Tasnova NL, Spicer JF, Josephs DH, Geh JL, MacKenzie Ross A, Healy C, Papa S, Lacy KE, Karagiannis SN. Combining Immune Checkpoint Inhibitors: Established and Emerging Targets and Strategies to Improve Outcomes in Melanoma. Front Immunol 2019; 10:453. [PMID: 30941125 PMCID: PMC6435047 DOI: 10.3389/fimmu.2019.00453] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 02/20/2019] [Indexed: 12/13/2022] Open
Abstract
The immune system employs several checkpoint pathways to regulate responses, maintain homeostasis and prevent self-reactivity and autoimmunity. Tumor cells can hijack these protective mechanisms to enable immune escape, cancer survival and proliferation. Blocking antibodies, designed to interfere with checkpoint molecules CTLA-4 and PD-1/PD-L1 and counteract these immune suppressive mechanisms, have shown significant success in promoting immune responses against cancer and can result in tumor regression in many patients. While inhibitors to CTLA-4 and the PD-1/PD-L1 axis are well-established for the clinical management of melanoma, many patients do not respond or develop resistance to these interventions. Concerted efforts have focused on combinations of approved therapies aiming to further augment positive outcomes and survival. While CTLA-4 and PD-1 are the most-extensively researched targets, results from pre-clinical studies and clinical trials indicate that novel agents, specific for checkpoints such as A2AR, LAG-3, IDO and others, may further contribute to the improvement of patient outcomes, most likely in combinations with anti-CTLA-4 or anti-PD-1 blockade. This review discusses the rationale for, and results to date of, the development of inhibitory immune checkpoint blockade combination therapies in melanoma. The clinical potential of new pipeline therapeutics, and possible future therapy design and directions that hold promise to significantly improve clinical prognosis compared with monotherapy, are discussed.
Collapse
Affiliation(s)
- Duaa O Khair
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Heather J Bax
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom.,School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Silvia Mele
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Silvia Crescioli
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Giulia Pellizzari
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Atousa Khiabany
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Mano Nakamura
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom.,School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, Guy's Cancer Centre, King's College London, London, United Kingdom.,Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Elise French
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Ricarda M Hoffmann
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom.,School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Iwan P Williams
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Anthony Cheung
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom.,Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, Guy's Cancer Centre, King's College London, London, United Kingdom
| | - Benjamin Thair
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Charlie T Beales
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Emma Touizer
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Adrian W Signell
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Nahrin L Tasnova
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - James F Spicer
- School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Debra H Josephs
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom.,School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Jenny L Geh
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Alastair MacKenzie Ross
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Ciaran Healy
- Department of Plastic Surgery at Guy's, King's, and St. Thomas' Hospitals, London, United Kingdom
| | - Sophie Papa
- School of Cancer & Pharmaceutical Sciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, Guy's Hospital, King's College London, London, United Kingdom
| |
Collapse
|
29
|
Jahan R, Villablanca JP, Harris RJ, Duarte-Vogel S, Williams CK, Vinters HV, Rao N, Enzmann DR, Ellingson BM. Selective middle cerebral artery occlusion in the rabbit: Technique and characterization with pathologic findings and multimodal MRI. J Neurosci Methods 2018; 313:6-12. [PMID: 30529458 DOI: 10.1016/j.jneumeth.2018.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND A reliable animal model of ischemic stroke is vital for pre-clinical evaluation of stroke therapies. We describe a reproducible middle cerebral artery (MCA) embolic occlusion in the French Lop rabbit characterized with multimodal MRI and histopathologic tissue analysis. NEW METHOD Fluoroscopic-guided microcatheter placement was performed in five consecutive subjects with angiographic confirmation of MCA occlusion with autologous clot. Multimodal MRI was obtained prior to occlusion and up to six hours post after which repeat angiography confirmed sustained occlusion. The brain was harvested for histopathologic examination. RESULTS Angiography confirmed successful MCA catheterization and durable (>6 h) MCA occlusion in all animals. There was increase of ADC volume over time and variable final core volume presumably related to individual variation in collateral flow. FLAIR hyperintensity indicative of cytotoxic edema and parenchymal contrast enhancement reflective of blood brain barrier disruption was observed over time. Tissue staining of the ischemic brain showed edema and structural alterations consistent with infarction. COMPARISON WITH EXISTING METHODS This study describes a technique of selective catheterization and embolic occlusion of the MCA in the rabbit with MRI characterization of evolution of ischemia in the model. CONCLUSIONS We demonstrate the feasibility of a rabbit model of embolic MCA occlusion with angiographic documentation. Serial MR imaging demonstrated changes comparable to those observed in human ischemic stroke, confirmed histopathologically.
Collapse
Affiliation(s)
- Reza Jahan
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.
| | - J Pablo Villablanca
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Robert J Harris
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Sandra Duarte-Vogel
- Division of Laboratory Animal Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Christopher K Williams
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Harry V Vinters
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States; Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Neal Rao
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Dieter R Enzmann
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Benjamin M Ellingson
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| |
Collapse
|
30
|
Harris RJ, Yao J, Chakhoyan A, Raymond C, Leu K, Liau LM, Nghiemphu PL, Lai A, Salamon N, Pope WB, Cloughesy TF, Ellingson BM. Simultaneous pH-sensitive and oxygen-sensitive MRI of human gliomas at 3 T using multi-echo amine proton chemical exchange saturation transfer spin-and-gradient echo echo-planar imaging (CEST-SAGE-EPI). Magn Reson Med 2018; 80:1962-1978. [PMID: 29626359 PMCID: PMC6107417 DOI: 10.1002/mrm.27204] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/05/2018] [Accepted: 03/11/2018] [Indexed: 01/09/2023]
Abstract
PURPOSE To introduce a new pH-sensitive and oxygen-sensitive MRI technique using amine proton CEST echo spin-and-gradient echo (SAGE) EPI (CEST-SAGE-EPI). METHODS pH-weighting was obtained using CEST estimations of magnetization transfer ratio asymmetry (MTRasym ) at 3 ppm, and oxygen-weighting was obtained using R2' measurements. Glutamine concentration, pH, and relaxation rates were varied in phantoms to validate simulations and estimate relaxation rates. The values of MTRasym and R2' in normal-appearing white matter, T2 hyperintensity, contrast enhancement, and macroscopic necrosis were measured in 47 gliomas. RESULTS Simulation and phantom results confirmed an increase in MTRasym with decreasing pH. The CEST-SAGE-EPI estimates of R2 , R2*, and R2' varied linearly with gadolinium diethylenetriamine penta-acetic acid concentration (R2 = 6.2 mM-1 ·sec-1 and R2* = 6.9 mM-1 ·sec-1 ). The CEST-SAGE-EPI and Carr-Purcell-Meiboom-Gill estimates of R2 (R2 = 0.9943) and multi-echo gradient-echo estimates of R2* (R2 = 0.9727) were highly correlated. T2 lesions had lower R2' and higher MTRasym compared with normal-appearing white matter, suggesting lower hypoxia and high acidity, whereas contrast-enhancement tumor regions had elevated R2' and MTRasym , indicating high hypoxia and acidity. CONCLUSION The CEST-SAGE-EPI technique provides simultaneous pH-sensitive and oxygen-sensitive image contrasts for evaluation of the brain tumor microenvironment. Advantages include fast whole-brain acquisition, in-line B0 correction, and simultaneous estimation of CEST effects, R2 , R2*, and R2' at 3 T.
Collapse
Affiliation(s)
- Robert J. Harris
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Jingwen Yao
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, CA
| | - Ararat Chakhoyan
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Catalina Raymond
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Kevin Leu
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Linda M. Liau
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Neurosurgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Phioanh L. Nghiemphu
- Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Albert Lai
- Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Noriko Salamon
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Whitney B. Pope
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Timothy F. Cloughesy
- Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Benjamin M. Ellingson
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- Dept. of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, CA
- Dept. of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| |
Collapse
|
31
|
Abstract
A singular feature of all prokaryotic cells is the presence of a cell envelope composed of a cytoplasmic membrane and a cell wall. The introduction of bacterial cell fractionation techniques in the 1950s and 1960s along with developments in procedures for electron microscopy opened the window towards an understanding of the chemical composition and architecture of the cell envelope. This review traces the contribution of Terry Beveridge in these endeavours, beginning with his doctoral studies in the 1970s on the structure of paracrystalline surface arrays (S-layers), followed by an exploration of cryogenic methods for preserving bacteria for ultrastructural analyses. His insights are reflected in a current example of the contribution of cryo-electron microscopy to S-layer studies — the structure and assembly of the surface array of Caulobacter crescentus. The review then focuses on Terry’s contributions to imaging the ultrastructure of bacterial cell envelopes and to the development of cryo-electron microscopy techniques, including the use of CEMOVIS (Cryo-electron Microscopy of Vitreous Sections) to “see” the ultrastructure of the Gram-positive cell envelope — his last scientific endeavour.
Collapse
Affiliation(s)
- Cezar M. Khursigara
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada
- Molecular and Cellular Imaging Facility, Advanced Analysis Centre, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Susan F. Koval
- Department of Microbiology and Immunology, University of Western Ontario, London, ON N6A 5C1, Canada
| | - Dianne M. Moyles
- Molecular and Cellular Imaging Facility, Advanced Analysis Centre, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Robert J. Harris
- Molecular and Cellular Imaging Facility, Advanced Analysis Centre, University of Guelph, Guelph, ON N1G 2W1, Canada
| |
Collapse
|
32
|
Harris RJ, Carden RG, Duncan AN, Widenhoefer RA. Kinetics and Mechanism of the Gold-Catalyzed Intermolecular Hydroalkoxylation of Allenes with Alcohols. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02211] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert J. Harris
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Robert G. Carden
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Alethea N. Duncan
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Ross A. Widenhoefer
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
33
|
Chakhoyan A, Woodworth DC, Harris RJ, Lai A, Nghiemphu PL, Liau LM, Pope WB, Cloughesy TF, Ellingson BM. Mono-exponential, diffusion kurtosis and stretched exponential diffusion MR imaging response to chemoradiation in newly diagnosed glioblastoma. J Neurooncol 2018; 139:651-659. [PMID: 29855771 DOI: 10.1007/s11060-018-2910-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/22/2018] [Indexed: 01/18/2023]
Abstract
PURPOSE To quantify changes and prognostic value of diffusion MRI measurements obtained using mono-exponential, diffusion kurtosis imaging (DKI) and stretched exponential (SE) models prior and after chemoradiation in newly diagnosed glioblastoma (GBM). METHODS Diffusion-weighted images (DWIs) were acquired in twenty-three patients following surgery, prior chemoradiation and within 7 days following completion of treatment, using b-values ranging from 0 to 5000s/mm2. Mono-exponential diffusion (apparent diffusion coefficient: ADC), isotropic (non-directional) DKI model with apparent diffusivity (Dapp) and kurtosis (Kapp) estimates as well as SE model with distributed-diffusion coefficient (DDC) and mean intra-voxel heterogeneity (α) were computed for all patients prior and after chemoradiation. Median values were calculated for normal appearing white matter (NAWM) and contrast-enhancing tumor (CET). The magnitudes of diffusion change prior and after chemoradiation were used to predict overall survival (OS). RESULTS Diffusivity in NAWM was consistent for all diffusion measures during chemoradiation, while diffusivity measurements (ADC, Dapp and DDC) within CET changed significantly. A strong positive correlation existed between ADC, Dapp, and DDC measurements prior to chemoradiation; however, this association was weak following chemoradiation, suggesting a more complex microstructural environment after cytotoxic therapy. When combined with baseline tumor volume and MGMT status, age and ADC changes added significant prognostic values, whereas more complex diffusion models did not show significant value in predicting OS. CONCLUSIONS Despite increased tissue complexity following chemoradiation, advanced diffusion models have longer acquisition times, provide largely comparable measures of diffusivity, and do not appear to provide additional prognostic value compared to mono-exponential ADC maps.
Collapse
Affiliation(s)
- Ararat Chakhoyan
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Davis C Woodworth
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Biomedical Physics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Robert J Harris
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Albert Lai
- UCLA Neuro-Oncology Program, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Phioanh L Nghiemphu
- UCLA Neuro-Oncology Program, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Linda M Liau
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Whitney B Pope
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Timothy F Cloughesy
- UCLA Neuro-Oncology Program, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, CA, USA. .,Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA. .,Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, Los Angeles, CA, USA. .,UCLA Neuro-Oncology Program, University of California, Los Angeles, Los Angeles, CA, USA. .,UCLA Brain Tumor Imaging Laboratory (BTIL), Biomedical Physics, Psychiatry, and Bioengineering, Departments of Radiological Sciences and Psychiatry, David Geffen School of Medicine, University of California, Los Angeles, 924 Westwood Blvd., Suite 615, Los Angeles, CA, 90024, USA.
| |
Collapse
|
34
|
Fridgeirsdottir GA, Harris RJ, Dryden IL, Fischer PM, Roberts CJ. Multiple Linear Regression Modeling To Predict the Stability of Polymer–Drug Solid Dispersions: Comparison of the Effects of Polymers and Manufacturing Methods on Solid Dispersion Stability. Mol Pharm 2018. [DOI: 10.1021/acs.molpharmaceut.8b00021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Robert J. Harris
- Juniper Pharma Services Ltd, Nottingham Business Park, Nottingham, United Kingdom
| | - Ian L. Dryden
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham, United Kingdom
| | - Peter M. Fischer
- School of Pharmacy, University of Nottingham, University Park, Nottingham, United Kingdom
| | - Clive J. Roberts
- School of Pharmacy, University of Nottingham, University Park, Nottingham, United Kingdom
| |
Collapse
|
35
|
Stagg HR, Hatherell HA, Lipman MC, Harris RJ, Abubakar I. Treatment regimens for rifampicin-resistant tuberculosis: highlighting a research gap. Int J Tuberc Lung Dis 2018; 20:866-9. [PMID: 27287636 DOI: 10.5588/ijtld.16.0034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Treatment guidance for non-multidrug-resistant (MDR) rifampicin-resistant (RMP-R) tuberculosis (TB) is variable. We aimed to undertake a systematic review and meta-analysis of the randomised controlled trial (RCT) data behind such guidelines to identify the most efficacious treatment regimens. Ovid MEDLINE, the Web of Science and EMBASE were mined using search terms for TB, drug therapy and RCTs. Despite 12 604 records being retrieved, only three studies reported treatment outcomes by regimen for patients with non-MDR RMP-R disease, preventing meta-analysis. Our systematic review highlights a substantial gap in the literature regarding evidence-based treatment regimens for RMP-R TB.
Collapse
Affiliation(s)
- H R Stagg
- Research Department of Infection and Population Health, UCL, London, UK
| | - H-A Hatherell
- Research Department of Infection and Population Health, University College London (UCL) CoMPLEX, Faculty of Mathematics and Physical Sciences, UCL, London, UK
| | - M C Lipman
- UCL Respiratory, Division of Medicine, UCL, London, Royal Free London National Health Service Foundation Trust, London, UK
| | - R J Harris
- Statistics, Modelling and Economics Department, Public Health England, London, UK
| | - I Abubakar
- Research Department of Infection and Population Health, Medical Research Council Clinical Trials Unit, UCL, London, UK
| |
Collapse
|
36
|
Dietrich PI, Harris RJ, Blaicher M, Corrigan MK, Morris TM, Freude W, Quirrenbach A, Koos C. Printed freeform lens arrays on multi-core fibers for highly efficient coupling in astrophotonic systems. Opt Express 2017; 25:18288-18295. [PMID: 28789316 DOI: 10.1364/oe.25.018288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/26/2017] [Indexed: 06/07/2023]
Abstract
Coupling of light into multi-core fibers (MCF) for spatially resolved spectroscopy is of great importance to astronomical instrumentation. To achieve high coupling efficiencies along with fill-fractions close to unity, micro-optical elements are required to concentrate the incoming light to the individual cores of the MCF. In this paper we demonstrate facet-attached lens arrays (LA) fabricated by two-photon polymerization. The LA provide close to 100% fill-fraction along with efficiencies of up to 73% (down to 1.4 dB loss) for coupling of light from free space into an MCF core. We show the viability of the concept for astrophotonic applications by integrating an MCF-LA assembly in an adaptive-optics test bed and by assessing its performance as a tip/tilt sensor.
Collapse
|
37
|
Ellingson BM, Gerstner ER, Smits M, Huang RY, Colen R, Abrey LE, Aftab DT, Schwab GM, Hessel C, Harris RJ, Chakhoyan A, Gahrmann R, Pope WB, Leu K, Raymond C, Woodworth DC, de Groot J, Wen PY, Batchelor TT, van den Bent MJ, Cloughesy TF. Diffusion MRI Phenotypes Predict Overall Survival Benefit from Anti-VEGF Monotherapy in Recurrent Glioblastoma: Converging Evidence from Phase II Trials. Clin Cancer Res 2017; 23:5745-5756. [PMID: 28655794 DOI: 10.1158/1078-0432.ccr-16-2844] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 05/16/2017] [Accepted: 06/21/2017] [Indexed: 01/25/2023]
Abstract
Purpose: Anti-VEGF therapies remain controversial in the treatment of recurrent glioblastoma (GBM). In the current study, we demonstrate that recurrent GBM patients with a specific diffusion MR imaging signature have an overall survival (OS) advantage when treated with cediranib, bevacizumab, cabozantinib, or aflibercept monotherapy at first or second recurrence. These findings were validated using a separate trial comparing bevacizumab with lomustine.Experimental Design: Patients with recurrent GBM and diffusion MRI from the monotherapy arms of 5 separate phase II clinical trials were included: (i) cediranib (NCT00035656); (ii) bevacizumab (BRAIN Trial, AVF3708g; NCT00345163); (iii) cabozantinib (XL184-201; NCT00704288); (iv) aflibercept (VEGF Trap; NCT00369590); and (v) bevacizumab or lomustine (BELOB; NTR1929). Apparent diffusion coefficient (ADC) histogram analysis was performed prior to therapy to estimate "ADCL," the mean of the lower ADC distribution. Pretreatment ADCL, enhancing volume, and clinical variables were tested as independent prognostic factors for OS.Results: The coefficient of variance (COV) in double baseline ADCL measurements was 2.5% and did not significantly differ (P = 0.4537). An ADCL threshold of 1.24 μm2/ms produced the largest OS differences between patients (HR ∼ 0.5), and patients with an ADCL > 1.24 μm2/ms had close to double the OS in all anti-VEGF therapeutic scenarios tested. Training and validation data confirmed that baseline ADCL was an independent predictive biomarker for OS in anti-VEGF therapies, but not in lomustine, after accounting for age and baseline enhancing tumor volume.Conclusions: Pretreatment diffusion MRI is a predictive imaging biomarker for OS in patients with recurrent GBM treated with anti-VEGF monotherapy at first or second relapse. Clin Cancer Res; 23(19); 5745-56. ©2017 AACR.
Collapse
Affiliation(s)
- Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California. .,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,UCLA Neuro Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | | | - Marion Smits
- Department of Radiology and Nuclear Medicine, Erasmus MC, University Medical Centre Rotterdam, The Netherlands
| | - Raymond Y Huang
- Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Rivka Colen
- Department of Neuroradiology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | | | | | | | - Robert J Harris
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Ararat Chakhoyan
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Renske Gahrmann
- Department of Radiology and Nuclear Medicine, Erasmus MC, University Medical Centre Rotterdam, The Netherlands
| | - Whitney B Pope
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Kevin Leu
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Catalina Raymond
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Davis C Woodworth
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - John de Groot
- Department of Neuro-Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts
| | | | - Martin J van den Bent
- Department of Neuro-Oncology, Erasmus MC, University Medical Centre Rotterdam, The Netherlands
| | - Timothy F Cloughesy
- UCLA Neuro Oncology Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.,Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| |
Collapse
|
38
|
Nguyen HTN, Liu LY, Nguyen NT, Lenchner D, Dovek L, Harris RJ, Ellingson BM, Ozer BH, Ravelo A, Sommer N, Sim MS, Elashoff RM, Green RM, Nghiemphu PL, Cloughesy TF, Lai A. Bevacizumab (Bev) to reduce the negative impact of glioblastoma (GBM) tumor size on survival from first recurrence. J Clin Oncol 2017. [DOI: 10.1200/jco.2017.35.15_suppl.2052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2052 Background: Bev was FDA approved for recurrent GBM in 2009. However, the survival benefit from Bev in GBM remains to be demonstrated. Methods: We retrospectively identified 168 primary GBM patients diagnosed between 2001-2015 at UCLA and Kaiser Permanente LA, who received upfront radio-chemotherapy, followed with Bev and/or Lomustine (CCNU) at 1st recurrence. We measured tumor size at 1st recurrent treatment initiation, using bi-dimensional (2D) and volumetric (3D) techniques. We analyzed overall survival (OS) from 1st recurrence by Kaplan-Meier analysis. Results: Three groups of patients diagnosed from 2009-2015 were identified: patients treated with Bev alone (n = 49), CCNU alone (n = 36), and concurrent Bev/CCNU (n = 53). Patients were statistically different in performance status at 1st recurrence and tumor size; the CCNU alone group had smaller tumor sizes at diagnosis compared to the Bev groups. The CCNU group showed substantially greater survival (median OS (mOS) = 14.1 mo) compared to the Bev and Bev/CCNU groups (mOS = 6.9 and 7.1 mo, respectively), which may be explained by the imbalance in tumor sizes among the groups, and high rate of crossover (69%) to Bev in subsequent recurrences. To minimize selection bias, we identified another control group (n = 30) diagnosed from 2001-2004 who received CCNU only (CCNU 01-04). These patients had tumor size and KPS more comparable to both Bev groups, and a low rate of crossover (7%). OS for CCNU 01-04 (mOS = 5.7 mo) was similar to the Bev groups. Across all patients, we observed poor OS associated with larger 2D size vs. those with small tumors (mOS = 6.7 vs. 8.8 mo; p = 0.003). In separate stratification of each treatment group by tumor size, this association was retained in the CCNU 01-04 group (mOS = 4.0 vs. 8.4 mo, p < 0.001), but not in either Bev (mOS = 6.7 vs. 7.3 mo) or BEV/CCNU (mOS = 7.0 vs. 8.8 mo). Analysis of effect of tumor size by 3D measurement yielded similar results. Conclusions: Bev appears to reduce the negative impact of large tumor size on GBM patient survival from 1st recurrence. 2D and 3D measurements were correlated, suggesting the adequacy of use of conventional tumor bi-dimensional measurement to predict benefit of Bev in patients based on tumor size.
Collapse
Affiliation(s)
| | - Liang Yen Liu
- University of California Los Angeles Neurology, Los Angeles, CA
| | - Nhung T Nguyen
- University of California Los Angeles Neurology, Los Angeles, CA
| | - Daniel Lenchner
- University of California Los Angeles Neurology, Los Angeles, CA
| | - Laura Dovek
- University of California Los Angeles Neurology, Los Angeles, CA
| | - Robert J. Harris
- Departments of Radiological Sciences and Biomedical Physics, University of California Los Angeles, Los Angeles, CA
| | | | - Byram H Ozer
- University of California Los Angeles Neurology, Los Angeles, CA
| | | | | | | | - Robert M. Elashoff
- Department of Biomathematics, David Geffen School of Medicine, Los Angeles, CA
| | | | | | | | - Albert Lai
- University of California Los Angeles Neurology, Los Angeles, CA
| |
Collapse
|
39
|
Law PJ, Berndt SI, Speedy HE, Camp NJ, Sava GP, Skibola CF, Holroyd A, Joseph V, Sunter NJ, Nieters A, Bea S, Monnereau A, Martin-Garcia D, Goldin LR, Clot G, Teras LR, Quintela I, Birmann BM, Jayne S, Cozen W, Majid A, Smedby KE, Lan Q, Dearden C, Brooks-Wilson AR, Hall AG, Purdue MP, Mainou-Fowler T, Vajdic CM, Jackson GH, Cocco P, Marr H, Zhang Y, Zheng T, Giles GG, Lawrence C, Call TG, Liebow M, Melbye M, Glimelius B, Mansouri L, Glenn M, Curtin K, Diver WR, Link BK, Conde L, Bracci PM, Holly EA, Jackson RD, Tinker LF, Benavente Y, Boffetta P, Brennan P, Maynadie M, McKay J, Albanes D, Weinstein S, Wang Z, Caporaso NE, Morton LM, Severson RK, Riboli E, Vineis P, Vermeulen RCH, Southey MC, Milne RL, Clavel J, Topka S, Spinelli JJ, Kraft P, Ennas MG, Summerfield G, Ferri GM, Harris RJ, Miligi L, Pettitt AR, North KE, Allsup DJ, Fraumeni JF, Bailey JR, Offit K, Pratt G, Hjalgrim H, Pepper C, Chanock SJ, Fegan C, Rosenquist R, de Sanjose S, Carracedo A, Dyer MJS, Catovsky D, Campo E, Cerhan JR, Allan JM, Rothman N, Houlston R, Slager S. Genome-wide association analysis implicates dysregulation of immunity genes in chronic lymphocytic leukaemia. Nat Commun 2017; 8:14175. [PMID: 28165464 PMCID: PMC5303820 DOI: 10.1038/ncomms14175] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 12/06/2016] [Indexed: 02/07/2023] Open
Abstract
Several chronic lymphocytic leukaemia (CLL) susceptibility loci have been reported; however, much of the heritable risk remains unidentified. Here we perform a meta-analysis of six genome-wide association studies, imputed using a merged reference panel of 1,000 Genomes and UK10K data, totalling 6,200 cases and 17,598 controls after replication. We identify nine risk loci at 1p36.11 (rs34676223, P=5.04 × 10-13), 1q42.13 (rs41271473, P=1.06 × 10-10), 4q24 (rs71597109, P=1.37 × 10-10), 4q35.1 (rs57214277, P=3.69 × 10-8), 6p21.31 (rs3800461, P=1.97 × 10-8), 11q23.2 (rs61904987, P=2.64 × 10-11), 18q21.1 (rs1036935, P=3.27 × 10-8), 19p13.3 (rs7254272, P=4.67 × 10-8) and 22q13.33 (rs140522, P=2.70 × 10-9). These new and established risk loci map to areas of active chromatin and show an over-representation of transcription factor binding for the key determinants of B-cell development and immune response.
Collapse
Affiliation(s)
- Philip J. Law
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Sonja I. Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Helen E. Speedy
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Nicola J. Camp
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA
| | - Georgina P. Sava
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Christine F. Skibola
- Department of Epidemiology, School of Public Health and Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
| | - Amy Holroyd
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Vijai Joseph
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Nicola J. Sunter
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Alexandra Nieters
- Center for Chronic Immunodeficiency, University Medical Center Freiburg, Freiburg, Baden-Württemberg 79108, Germany
| | - Silvia Bea
- Institut d'Investigacions Biomèdiques August Pi iSunyer (IDIBAPS), Hospital Clínic, Barcelona 08036, Spain
| | - Alain Monnereau
- Registre des hémopathies malignes de la Gironde, Institut Bergonié, Inserm U1219 EPICENE, 33076 Bordeaux, France
- Epidemiology of Childhood and Adolescent Cancers Group, Inserm, Center of Research in Epidemiology and Statistics Sorbonne Paris Cité, Paris, F-94807, France
- Université Paris Descartes, Paris 75270, France
| | - David Martin-Garcia
- Institut d'Investigacions Biomèdiques August Pi iSunyer (IDIBAPS), Hospital Clínic, Barcelona 08036, Spain
| | - Lynn R. Goldin
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Guillem Clot
- Institut d'Investigacions Biomèdiques August Pi iSunyer (IDIBAPS), Hospital Clínic, Barcelona 08036, Spain
| | - Lauren R. Teras
- Epidemiology Research Program, American Cancer Society, Atlanta, Georgia 30303, USA
| | - Inés Quintela
- Grupo de Medicina Xenomica, Universidade de Santiago de Compostela, Centro Nacional de Genotipado (CeGen-PRB2-ISCIII), CIBERER, 15782 Santiago de Compostela, Spain
| | - Brenda M. Birmann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Sandrine Jayne
- Ernest and Helen Scott Haematological Research Institute, University of Leicester, Leicester LE2 7LX, UK
| | - Wendy Cozen
- Department of Preventive Medicine, USC Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA
- Norris Comprehensive Cancer Center, USC Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA
| | - Aneela Majid
- Ernest and Helen Scott Haematological Research Institute, University of Leicester, Leicester LE2 7LX, UK
| | - Karin E. Smedby
- Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Hematology Center, Karolinsak University Hospital, Stockholm 17176, Sweden
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Claire Dearden
- The Royal Marsden NHS Foundation Trust, London SM2 5PT, UK
| | - Angela R. Brooks-Wilson
- Genome Sciences Centre, BC Cancer Agency, Vancouver, British Columbia, Canada V5Z1L3
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia V5A1S6, Canada
| | - Andrew G. Hall
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Mark P. Purdue
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Tryfonia Mainou-Fowler
- Haematological Sciences, Medical School, Newcastle University, Newcastle-upon-Tyne NE2 4HH, UK
| | - Claire M. Vajdic
- Centre for Big Data Research in Health, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Graham H. Jackson
- Department of Haematology, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP, UK
| | - Pierluigi Cocco
- Department of Public Health, Clinical and Molecular Medicine, University of Cagliari, Monserrato, Cagliari 09042, Italy
| | - Helen Marr
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Yawei Zhang
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut 06520, USA
| | - Tongzhang Zheng
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut 06520, USA
| | - Graham G. Giles
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Victoria 3004, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria 3010, Australia
| | | | - Timothy G. Call
- Division of Hematology, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Mark Liebow
- Department of Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Mads Melbye
- Department of Epidemiology Research, Division of Health Surveillance and Research, Statens Serum Institut, 2300 Copenhagen, Denmark
- Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Bengt Glimelius
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75105 Uppsala, Sweden
| | - Larry Mansouri
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75105 Uppsala, Sweden
| | - Martha Glenn
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA
| | - Karen Curtin
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA
| | - W Ryan Diver
- Epidemiology Research Program, American Cancer Society, Atlanta, Georgia 30303, USA
| | - Brian K. Link
- Department of Internal Medicine, Carver College of Medicine, The University of Iowa, Iowa City, Iowa 52242, USA
| | - Lucia Conde
- Department of Epidemiology, School of Public Health and Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama 35233, USA
| | - Paige M. Bracci
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California 94118, USA
| | - Elizabeth A. Holly
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California 94118, USA
| | - Rebecca D. Jackson
- Division of Endocrinology, Diabetes and Metabolism, Ohio State University, Columbus, Ohio 43210, USA
| | - Lesley F. Tinker
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington 98117, USA
| | - Yolanda Benavente
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology-IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Barcelona 08036, Spain
| | - Paolo Boffetta
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Paul Brennan
- International Agency for Research on Cancer, Lyon 69372, France
| | - Marc Maynadie
- Registre des Hémopathies Malignes de Côte d'Or, University of Burgundy and Dijon University Hospital, Dijon 21070, France
| | - James McKay
- International Agency for Research on Cancer, Lyon 69372, France
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Stephanie Weinstein
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Zhaoming Wang
- Department of Computational Biology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
| | - Neil E. Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Lindsay M. Morton
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Richard K. Severson
- Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, Michigan 48201, USA
| | - Elio Riboli
- School of Public Health, Imperial College London, London W2 1PG, UK
| | - Paolo Vineis
- MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, London W2 1PG, UK
- Human Genetics Foundation, 10126 Turin, Italy
| | - Roel C. H. Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht 3508 TD, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Melissa C. Southey
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Roger L. Milne
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Victoria 3004, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Jacqueline Clavel
- Epidemiology of Childhood and Adolescent Cancers Group, Inserm, Center of Research in Epidemiology and Statistics Sorbonne Paris Cité (CRESS), Paris F-94807, France
- Université Paris Descartes, 75270 Paris, France
| | - Sabine Topka
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - John J. Spinelli
- Cancer Control Research, BC Cancer Agency, Vancouver, British Columbia, Canada V5Z1L3
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada V6T1Z3
| | - Peter Kraft
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts 02115, USA
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Maria Grazia Ennas
- Department of Biomedical Science, University of Cagliari, Monserrato, Cagliari 09042, Italy
| | | | - Giovanni M. Ferri
- Interdisciplinary Department of Medicine, University of Bari, Bari 70124, Italy
| | - Robert J. Harris
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool L69 3BX, UK
| | - Lucia Miligi
- Environmental and Occupational Epidemiology Unit, Cancer Prevention and Research Institute (ISPO), Florence 50139, Italy
| | - Andrew R. Pettitt
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool L69 3BX, UK
| | - Kari E. North
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Carolina Center for Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - David J. Allsup
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, Cottingham HU16 5JQ, UK
| | - Joseph F. Fraumeni
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - James R. Bailey
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, Cottingham HU16 5JQ, UK
| | - Kenneth Offit
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Guy Pratt
- Department of Haematology, Birmingham Heartlands Hospital, Birmingham B9 5SS, UK
| | - Henrik Hjalgrim
- Department of Epidemiology Research, Division of Health Surveillance and Research, Statens Serum Institut, 2300 Copenhagen, Denmark
| | - Chris Pepper
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK
| | - Stephen J. Chanock
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Chris Fegan
- Cardiff and Vale National Health Service Trust, Heath Park, Cardiff CF14 4XW, UK
| | - Richard Rosenquist
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75105 Uppsala, Sweden
| | - Silvia de Sanjose
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- International Agency for Research on Cancer, Lyon 69372, France
| | - Angel Carracedo
- Grupo de Medicina Xenomica, Universidade de Santiago de Compostela, Centro Nacional de Genotipado (CeGen-PRB2-ISCIII), CIBERER, 15782 Santiago de Compostela, Spain
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah 21589, KSA
| | - Martin J. S. Dyer
- Ernest and Helen Scott Haematological Research Institute, University of Leicester, Leicester LE2 7LX, UK
| | - Daniel Catovsky
- Division of Molecular Pathology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Elias Campo
- Institut d'Investigacions Biomèdiques August Pi iSunyer (IDIBAPS), Hospital Clínic, Barcelona 08036, Spain
- Unitat de Hematología, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona 08036, Spain
| | - James R. Cerhan
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - James M. Allan
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Nathanial Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892, USA
| | - Richard Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London SW7 3RP, UK
| | - Susan Slager
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota 55905, USA
| |
Collapse
|
40
|
Law PJ, Sud A, Mitchell JS, Henrion M, Orlando G, Lenive O, Broderick P, Speedy HE, Johnson DC, Kaiser M, Weinhold N, Cooke R, Sunter NJ, Jackson GH, Summerfield G, Harris RJ, Pettitt AR, Allsup DJ, Carmichael J, Bailey JR, Pratt G, Rahman T, Pepper C, Fegan C, von Strandmann EP, Engert A, Försti A, Chen B, Filho MIDS, Thomsen H, Hoffmann P, Noethen MM, Eisele L, Jöckel KH, Allan JM, Swerdlow AJ, Goldschmidt H, Catovsky D, Morgan GJ, Hemminki K, Houlston RS. Genome-wide association analysis of chronic lymphocytic leukaemia, Hodgkin lymphoma and multiple myeloma identifies pleiotropic risk loci. Sci Rep 2017; 7:41071. [PMID: 28112199 PMCID: PMC5253627 DOI: 10.1038/srep41071] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 12/14/2016] [Indexed: 02/08/2023] Open
Abstract
B-cell malignancies (BCM) originate from the same cell of origin, but at different maturation stages and have distinct clinical phenotypes. Although genetic risk variants for individual BCMs have been identified, an agnostic, genome-wide search for shared genetic susceptibility has not been performed. We explored genome-wide association studies of chronic lymphocytic leukaemia (CLL, N = 1,842), Hodgkin lymphoma (HL, N = 1,465) and multiple myeloma (MM, N = 3,790). We identified a novel pleiotropic risk locus at 3q22.2 (NCK1, rs11715604, P = 1.60 × 10-9) with opposing effects between CLL (P = 1.97 × 10-8) and HL (P = 3.31 × 10-3). Eight established non-HLA risk loci showed pleiotropic associations. Within the HLA region, Ser37 + Phe37 in HLA-DRB1 (P = 1.84 × 10-12) was associated with increased CLL and HL risk (P = 4.68 × 10-12), and reduced MM risk (P = 1.12 × 10-2), and Gly70 in HLA-DQB1 (P = 3.15 × 10-10) showed opposing effects between CLL (P = 3.52 × 10-3) and HL (P = 3.41 × 10-9). By integrating eQTL, Hi-C and ChIP-seq data, we show that the pleiotropic risk loci are enriched for B-cell regulatory elements, as well as an over-representation of binding of key B-cell transcription factors. These data identify shared biological pathways influencing the development of CLL, HL and MM. The identification of these risk loci furthers our understanding of the aetiological basis of BCMs.
Collapse
Affiliation(s)
- Philip J. Law
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Amit Sud
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Jonathan S. Mitchell
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Marc Henrion
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Giulia Orlando
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Oleg Lenive
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Peter Broderick
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Helen E. Speedy
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - David C. Johnson
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Martin Kaiser
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Niels Weinhold
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Rosie Cooke
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Nicola J. Sunter
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Graham H. Jackson
- Department of Haematology, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Geoffrey Summerfield
- Department of Haematology, Queen Elizabeth Hospital, Gateshead, Newcastle upon Tyne, UK
| | - Robert J. Harris
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - Andrew R. Pettitt
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK
| | - David J. Allsup
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - Jonathan Carmichael
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - James R. Bailey
- Queens Centre for Haematology and Oncology, Castle Hill Hospital, Hull and East Yorkshire NHS Trust, UK
| | - Guy Pratt
- Department of Haematology, Birmingham Heartlands Hospital, Birmingham, UK
| | - Thahira Rahman
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Chris Pepper
- Department of Haematology, School of Medicine, Cardiff University, Cardiff, UK
| | - Chris Fegan
- Cardiff and Vale National Health Service Trust, Heath Park, Cardiff, UK
| | | | - Andreas Engert
- Department of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
- Centre for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Bowang Chen
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
| | | | - Hauke Thomsen
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
| | - Per Hoffmann
- Institute of Human Genetics, University of Bonn, Germany
- Division of Medical Genetics, Department of Biomedicine, University of Basel, Switzerland
| | - Markus M. Noethen
- Institute of Human Genetics, University of Bonn, Germany
- Department of Genomics, Life & Brain Center, University of Bonn, Germany
| | | | | | - James M. Allan
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | - Anthony J. Swerdlow
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
- Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Hartmut Goldschmidt
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
- National Center of Tumor Diseases, Heidelberg, Germany
| | - Daniel Catovsky
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Gareth J. Morgan
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany
- Centre for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Richard S. Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| |
Collapse
|
41
|
Harris RJ, Cloughesy TF, Liau LM, Nghiemphu PL, Lai A, Pope WB, Ellingson BM. Simulation, phantom validation, and clinical evaluation of fast pH-weighted molecular imaging using amine chemical exchange saturation transfer echo planar imaging (CEST-EPI) in glioma at 3 T. NMR Biomed 2016; 29:1563-1576. [PMID: 27717216 DOI: 10.1002/nbm.3611] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/14/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
Acidity within the extracellular milieu is a hallmark of cancer. There is a current need for fast, high spatial resolution pH imaging techniques for clinical evaluation of cancers, including gliomas. Chemical exchange saturation transfer (CEST) MRI targeting fast-exchanging amine protons can be used to obtain high-resolution pH-weighted images, but conventional CEST acquisition strategies are slow. There is also a need for more accurate MR simulations to better understand the effects of amine CEST pulse sequence parameters on pH-weighted image contrast. In the current study we present a simulation of amine CEST contrast specific for a newly developed CEST echoplanar imaging (EPI) pulse sequence. The accuracy of the simulations was validated by comparing the exchange rates and Z-spectrum under a variety of conditions using physical phantoms of glutamine with different pH values. The effects of saturation pulse shapes, pulse durations, pulse train lengths, repetition times, and relaxation rates of bulk water and exchangeable amine protons on the CEST signal were explored for normal-appearing white matter (NAWM), glioma, and cerebrospinal fluid. Last, 18 patients with WHO II-IV gliomas were evaluated. Results showed that the Z-spectrum was highly dependent on saturation pulse shape, repetition time, saturation amplitude, magnetic field strength, and T2 within bulk water; however, the Z-spectrum was only minimally influenced by saturation pulse duration and the specific relaxation rates of amine protons. Results suggest that a Gaussian saturation pulse train consisting of 3 × 100 ms pulses using the minimum allowable repetition time is optimal for achieving over 90% available contrast across all tissues. Results also demonstrate that high saturation pulse amplitude and scanner field strength (>3 T) are necessary for adequate endogenous pH-weighted amine CEST contrast. pH-weighted amine CEST contrast increased with increasing tumor grade, with glioblastoma showing significantly higher contrast compared with WHO II or III gliomas.
Collapse
Affiliation(s)
- Robert J Harris
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- Department of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Timothy F Cloughesy
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Linda M Liau
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- Department of Neurosurgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Phioanh L Nghiemphu
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Albert Lai
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Whitney B Pope
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
- Department of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
- UCLA Brain Research Institute (BRI), David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California Los Angeles, Los Angeles, California, USA.
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
| |
Collapse
|
42
|
Pérez LM, Carpenter JM, Andrews SM, Ricci L, Isella A, Linz H, Sargent AI, Wilner DJ, Henning T, Deller AT, Chandler CJ, Dullemond CP, Lazio J, Menten KM, Corder SA, Storm S, Testi L, Tazzari M, Kwon W, Calvet N, Greaves JS, Harris RJ, Mundy LG. Spiral density waves in a young protoplanetary disk. Science 2016; 353:1519-1521. [PMID: 27708098 DOI: 10.1126/science.aaf8296] [Citation(s) in RCA: 215] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 09/05/2016] [Indexed: 11/03/2022]
Abstract
Gravitational forces are expected to excite spiral density waves in protoplanetary disks, disks of gas and dust orbiting young stars. However, previous observations that showed spiral structure were not able to probe disk midplanes, where most of the mass is concentrated and where planet formation takes place. Using the Atacama Large Millimeter/submillimeter Array, we detected a pair of trailing symmetric spiral arms in the protoplanetary disk surrounding the young star Elias 2-27. The arms extend to the disk outer regions and can be traced down to the midplane. These millimeter-wave observations also reveal an emission gap closer to the star than the spiral arms. We argue that the observed spirals trace shocks of spiral density waves in the midplane of this young disk.
Collapse
Affiliation(s)
- Laura M Pérez
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany.
| | - John M Carpenter
- Joint Atacama Large Millimeter/submillimeter Array (ALMA) Observatory, Avenida Alonso de Córdova 3107, Vitacura, Santiago, Chile
| | - Sean M Andrews
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - Luca Ricci
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - Andrea Isella
- Rice University, 6100 Main Street, Houston, TX 77005, USA
| | - Hendrik Linz
- Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
| | - Anneila I Sargent
- California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - David J Wilner
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - Thomas Henning
- Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
| | - Adam T Deller
- Netherlands Institute for Radio Astronomy (ASTRON), 7990-AA Dwingeloo, Netherlands
| | - Claire J Chandler
- National Radio Astronomy Observatory, Post Office Box O, Socorro, NM 87801, USA
| | - Cornelis P Dullemond
- Heidelberg University, Center for Astronomy, Albert Ueberle Strasse 2, Heidelberg, Germany
| | - Joseph Lazio
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91106, USA
| | - Karl M Menten
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - Stuartt A Corder
- Joint Atacama Large Millimeter/submillimeter Array (ALMA) Observatory, Avenida Alonso de Córdova 3107, Vitacura, Santiago, Chile
| | - Shaye Storm
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - Leonardo Testi
- European Southern Observatory, Karl Schwarzschild Strasse. 2, 85748 Garching, Germany. Istituto Nazionale di Astrofisica (INAF)-Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
| | - Marco Tazzari
- European Southern Observatory, Karl Schwarzschild Strasse. 2, 85748 Garching, Germany
| | - Woojin Kwon
- Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea. Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Nuria Calvet
- University of Michigan, 830 Dennison Building, 500 Church Street, Ann Arbor, MI 48109, USA
| | - Jane S Greaves
- Cardiff University, School of Physics and Astronomy, 4 The Parade, Cardiff CF24 3AA, UK
| | - Robert J Harris
- University of Illinois, 1002 West Green Street, Urbana, IL 61801, USA
| | - Lee G Mundy
- Department of Astronomy, University of Maryland, College Park, MD 20742, USA
| |
Collapse
|
43
|
Ellingson BM, Harris RJ, Woodworth DC, Leu K, Zaw O, Mason WP, Sahebjam S, Abrey LE, Aftab DT, Schwab GM, Hessel C, Lai A, Nghiemphu PL, Pope WB, Wen PY, Cloughesy TF. Baseline pretreatment contrast enhancing tumor volume including central necrosis is a prognostic factor in recurrent glioblastoma: evidence from single and multicenter trials. Neuro Oncol 2016; 19:89-98. [PMID: 27580889 DOI: 10.1093/neuonc/now187] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The prognostic significance of baseline contrast enhancing tumor prior to second- or third-line therapy in recurrent glioblastoma (GBM) for overall survival (OS) remains controversial, particularly in the context of repeated surgical resection and/or use of anti-angiogenic therapy. In the current study, we examined recurrent GBM patients from both single and multicenter clinical trials to test whether baseline enhancing tumor volume, including central necrosis, is a significant prognostic factor for OS in recurrent GBM. METHODS Included were 497 patients with recurrent GBM from 4 data sources: 2 single-center sites (University of Toronto, University of California Los Angeles) and 2 phase II multicenter trials (AVF3708G, Bevacizumab ± Irinotecan, NCT00345163; XL184-201, Cabozantinib, NCT00704288). T1 subtraction maps were used to define volume of contrast enhancing tumor, including central necrosis. Cox multivariable and univariate analyses were used to evaluate the relationship between tumor volume prior to second- or third-line therapy and OS. RESULTS Both continuous measures of baseline tumor volume and tumors dichotomized into large (≥15cc) and small (<15cc) tumors were significant predictors of OS (P<.0001), independently of age and treatment. Univariate analysis demonstrated significant OS differences (P<.05) between large (≥15cc) and small (<15cc) tumors in patients under all therapeutic scenarios. Only patients treated with cabozantinib who previously failed anti-angiogenic therapy did not show an OS dependence on baseline tumor volume. CONCLUSIONS Baseline tumor volume is a significant prognostic factor in recurrent GBM. Clinical trial treatment arms must have a balanced distribution of tumor size, and tumor size should be considered when interpreting therapeutic efficacy.
Collapse
Affiliation(s)
- Benjamin M Ellingson
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Robert J Harris
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Davis C Woodworth
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Kevin Leu
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Okkar Zaw
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Warren P Mason
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Solmaz Sahebjam
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Lauren E Abrey
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Dana T Aftab
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Gisela M Schwab
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Colin Hessel
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Albert Lai
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Phioanh L Nghiemphu
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Whitney B Pope
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Patrick Y Wen
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| | - Timothy F Cloughesy
- UCLA Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z.); Dept. of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E., R.J.H., D.C.W., K.L., O.Z., W.B.P.); Dept. of Physics and Biology in Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (B.M.E.); Dept. of Medicine, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada (W.P.M.);H. Lee Moffitt Cancer Center, Tampa, Florida (S.S.); F. Hoffman-La Roche, Ltd., Basel, Switzerland (L.E.A.); Exelixis, South San Francisco, California (D.T.A., G.M.S., C.H.); Dept. of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California (A.L., P.L.N., T.F.C.); Center for Neuro-Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (P.Y.W.)
| |
Collapse
|
44
|
Affiliation(s)
- Hao Li
- Department of Chemistry, French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| | - Robert J. Harris
- Department of Chemistry, French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| | - Kohki Nakafuku
- Department of Chemistry, French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| | - Ross A. Widenhoefer
- Department of Chemistry, French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
45
|
Stagg HR, Harris RJ, Hatherell HA, Obach D, Zhao H, Tsuchiya N, Kranzer K, Nikolayevskyy V, Kim J, Lipman MC, Abubakar I. What are the most efficacious treatment regimens for isoniazid-resistant tuberculosis? A systematic review and network meta-analysis. Thorax 2016; 71:940-9. [PMID: 27298314 PMCID: PMC5036252 DOI: 10.1136/thoraxjnl-2015-208262] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 04/30/2016] [Indexed: 12/02/2022]
Abstract
Introduction Consensus on the best treatment regimens for patients with isoniazid-resistant TB is limited; global treatment guidelines differ. We undertook a systematic review and meta-analysis using mixed-treatment comparisons methodology to provide an up-to-date summary of randomised controlled trials (RCTs) and relative regimen efficacy. Methods Ovid MEDLINE, the Web of Science and EMBASE were mined using search terms for TB, drug therapy and RCTs. Extracted data were inputted into fixed-effects and random-effects models. ORs for all possible network comparisons and hierarchical rankings for different regimens were obtained. Results 12 604 records were retrieved and 118 remained postextraction, representing 59 studies—27 standalone and 32 with multiple papers. In comparison to a baseline category that included the WHO-recommended regimen for countries with high levels of isoniazid resistance (rifampicin-containing regimens using fewer than three effective drugs at 4 months, in which rifampicin was protected by another effective drug at 6 months, and rifampicin was taken for 6 months), extending the duration of rifampicin and increasing the number of effective drugs at 4 months lowered the odds of unfavourable outcomes (treatment failure or the lack of microbiological cure; relapse post-treatment; death due to TB) in a fixed-effects model (OR 0.31 (95% credible interval 0.12–0.81)). In a random-effects model all estimates crossed the null. Conclusions Our systematic review and network meta-analysis highlight a regimen category that may be more efficacious than the WHO population level recommendation, and identify knowledge gaps where data are sparse. Systematic review registration number PROSPERO CRD42014015025.
Collapse
Affiliation(s)
- H R Stagg
- Research Department of Infection and Population Health, University College London, London, UK
| | - R J Harris
- Statistics, Modelling and Economics Department, Public Health England, London, UK
| | - H-A Hatherell
- Research Department of Infection and Population Health, University College London, London, UK UCL CoMPLEX, Faculty of Mathematics and Physical Sciences, University College London, London, UK
| | - D Obach
- Research Department of Infection and Population Health, University College London, London, UK
| | - H Zhao
- Respiratory Diseases Department, National Infections Service, Public Health England, London, UK
| | - N Tsuchiya
- Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - K Kranzer
- National and Supranational Mycobacterium Reference Laboratory, Research Centre Borstel, Borstel, Germany
| | - V Nikolayevskyy
- National Mycobacterium Reference Laboratory, Public Health England, London, UK Department of Medicine, Imperial College London, London, UK
| | - J Kim
- Research Department of Infection and Population Health, University College London, London, UK Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - M C Lipman
- UCL Respiratory, Division of Medicine, University College London, London, UK Royal Free London National Health Service Foundation Trust, London, UK
| | - I Abubakar
- Research Department of Infection and Population Health, University College London, London, UK MRC Clinical Trials Unit, University College London, London, UK
| |
Collapse
|
46
|
Harris RJ, Widenhoefer RA. Gold carbenes, gold-stabilized carbocations, and cationic intermediates relevant to gold-catalysed enyne cycloaddition. Chem Soc Rev 2016; 45:4533-51. [PMID: 27146712 DOI: 10.1039/c6cs00171h] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cationic gold complexes in which gold is bound to a formally divalent carbon atom, typically formulated as gold carbenes or α-metallocarbenium ions, have been widely invoked in a range of gold-catalyzed transformations, most notably in the gold-catalyzed cycloisomerization of 1,n-enynes. Although the existence of gold carbene complexes as intermediates in gold-catalyzed transformations is supported by a wealth of indirect experimental data and by computation, until recently no examples of cationic gold carbenes/α-metallocarbenium ions had been synthesized nor had any cationic intermediates generated via gold-catalyzed enyne cycloaddition been directly observed. Largely for this reason, there has been considerable debate regarding the electronic structure of these cationic complexes, in particular the relative contributions of the carbene (LAu(+)[double bond, length as m-dash]CR2) and α-metallocarbenium (LAu-CR2(+)) forms, which is intimately related to the extent of d → p backbonding from gold to the C1 carbon atom. However, over the past ∼ seven years, a number of cationic gold carbene complexes have been synthesized in solution and generated in the gas phase and cationic intermediates have been directly observed in the gold-catalyzed cycloaddition of enynes. Together, these advances provide insight into the nature and electronic structure of gold carbene/α-metallocarbenium complexes and the cationic intermediates generated via gold-catalyzed enyne cycloaddition. Herein we review recent advances in this area.
Collapse
Affiliation(s)
- R J Harris
- French Family Science Center, Duke University, Durham, NC 27708-0346, USA.
| | | |
Collapse
|
47
|
Ellingson BM, Hirata Y, Yogi A, Karavaeva E, Leu K, Woodworth DC, Harris RJ, Enzmann DR, Wu JY, Mathern GW, Salamon N. Topographical Distribution of Epileptogenic Tubers in Patients With Tuberous Sclerosis Complex. J Child Neurol 2016; 31:636-45. [PMID: 26472749 DOI: 10.1177/0883073815609151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 08/22/2015] [Indexed: 11/16/2022]
Abstract
Tuberous sclerosis complex is a multisystem genetic syndrome often affecting the central nervous system. The purpose of the current study was to identify topographical patterns in the distribution specific to epileptogenic (n = 37) and nonepileptogenic (n = 544) tubers throughout the brain for a cohort of 23 tuberous sclerosis complex patients with a history of seizures. Tubers localized to the inferior parietal lobes, middle frontal lobes, middle temporal lobes, or central sulcus regions were associated with a high frequency of epileptogenic tubers. Epileptogenic tubers occurred statistically more frequently within the inferior parietal lobe and within the central sulcus region in children younger than 1 or between 1 and 3 years old, respectively. Results imply seizure activity in tuberous sclerosis complex patients can be associated with the location of cortical tubers.
Collapse
Affiliation(s)
- Benjamin M Ellingson
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, Los Angeles, CA, USA
| | - Yoko Hirata
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Neurosurgery, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Akira Yogi
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nakagami-gun, Okinawa, Japan
| | - Elena Karavaeva
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Kevin Leu
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, Los Angeles, CA, USA
| | - Davis C Woodworth
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Biomedical Physics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Robert J Harris
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA Department of Biomedical Physics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Dieter R Enzmann
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Joyce Y Wu
- Department of Pediatrics, Division of Pediatric Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Gary W Mathern
- Departments of Neurosurgery and Psychiatry and Biobehavioral Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Noriko Salamon
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| |
Collapse
|
48
|
Karavaeva E, Harris RJ, Leu K, Shabihkhani M, Yong WH, Pope WB, Lai A, Nghiemphu PL, Liau LM, Chen W, Czernin J, Cloughesy TF, Ellingson BM. Relationship Between [18F]FDOPA PET Uptake, Apparent Diffusion Coefficient (ADC), and Proliferation Rate in Recurrent Malignant Gliomas. Mol Imaging Biol 2016; 17:434-42. [PMID: 25465392 DOI: 10.1007/s11307-014-0807-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
PURPOSE Diffusion magnetic resonance imaging (MRI) and 6-[(18)F]fluoro-L-dopa ([(18)F]FDOPA) positron emission tomography (PET) are used to interrogate malignant tumor microenvironment. It remains unclear whether there is a relationship between [(18)F]FDOPA uptake, diffusion MRI estimates of apparent diffusion coefficient (ADC), and mitotic activity in the context of recurrent malignant gliomas, where the tumor may be confounded by the effects of therapy. The purpose of the current study is to determine whether there is a correlation between these imaging techniques and mitotic activity in malignant gliomas. PROCEDURES We retrospectively examined 29 patients with recurrent malignant gliomas who underwent structural MRI, diffusion MRI, and [(18)F]FDOPA PET prior to surgical resection. Qualitative associations were noted, and quantitative voxel-wise and median measurement correlations between [(18)F]FDOPA PET, ADC, and mitotic index were performed. RESULTS Areas of high [(18)F]FDOPA uptake exhibited low ADC and areas of hyperintensity T2/fluid-attenuated inversion recovery (FLAIR) with low [(18)F]FDOPA uptake exhibited high ADC. There was a significant inverse voxel-wise correlation between [(18)F]FDOPA and ADC for all patients. Median [(18)F]FDOPA uptake and median ADC also showed a significant inverse correlation. Median [(18)F]FDOPA uptake was positively correlated, and median ADC was inversely correlated with mitotic index from resected tumor tissue. CONCLUSIONS A significant association may exist between [(18)F]FDOPA uptake, diffusion MRI, and mitotic activity in recurrent malignant gliomas.
Collapse
Affiliation(s)
- Elena Karavaeva
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, 924 Westwood Blvd, Suite 615, Los Angeles, CA, 90024, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
MacLachlan DG, Harris RJ, Choudhury D, Simmonds RD, Salter PS, Booth MJ, Allington-Smith JR, Thomson RR. Development of integrated mode reformatting components for diffraction-limited spectroscopy. Opt Lett 2016; 41:76-9. [PMID: 26696162 DOI: 10.1364/ol.41.000076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We present the results of our work on developing fully integrated devices (photonic dicers) for reformatting multimode light to a diffraction limited pseudo-slit. These devices can be used to couple a seeing limited telescope point spread function to a spectrograph operating at the diffraction limit, thus potentially enabling compact, high-resolution spectrographs that are free of modal noise.
Collapse
|
50
|
Lee KI, Dunham MM, Myers PC, Tobin JJ, Kristensen LE, Pineda JE, Vorobyov EI, Offner SSR, Arce HG, Li ZY, Bourke TL, Jørgensen JK, Goodman AA, Sadavoy SI, Chandler CJ, Harris RJ, Kratter K, Looney LW, Melis C, Perez LM, Segura-Cox D. MASS ASSEMBLY OF STELLAR SYSTEMS AND THEIR EVOLUTION WITH THE SMA (MASSES). MULTIPLICITY AND THE PHYSICAL ENVIRONMENT IN L1448N. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/814/2/114] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|