1
|
Dumont ELP, Kaplan PD, Do C, Banerjee S, Barrer M, Ezzedine K, Zippin JH, Varghese GI. A randomized trial of a wearable UV dosimeter for skin cancer prevention. Front Med (Lausanne) 2024; 11:1259050. [PMID: 38495115 PMCID: PMC10940533 DOI: 10.3389/fmed.2024.1259050] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 02/20/2024] [Indexed: 03/19/2024] Open
Abstract
Background Non-melanoma skin cancer (NMSC) is the most prevalent cancer in the United States. Despite guidelines on ultraviolet (UV) avoidance, it remains difficult for people to assess their exposure, as UV is invisible and the onset of UV-induced symptoms is delayed. Methods In a prospective randomized trial, 97 elderly patients with a history of actinic keratoses (AK) were followed over 6 months. Fifty patients received UV counseling from a dermatologist and a wearable UV dosimeter that provided real-time and cumulative UV exposure. Forty-seven patients received only UV counseling from a dermatologist. Results Over 75% of participants recorded UV exposure at least once a week during the summer. After 6 months of intervention, when comparing the device group to the control group, we observed a non-significant 20% lower ratio of incidence rates of AKs (95% CI = [-41, 55%], p-value = 0.44) and a significant 95% lower ratio of incidence rates of NMSCs (95% CI = [33, 99.6%], p-value = 0.024). Surveys demonstrated that the control group's score in self-perceived ability to participate in social activities significantly increased by 1.2 (p-value = 0.04), while in the device group, this score non-significantly decreased by 0.9 (p-value = 0.1). We did not observe changes, or between-group differences, in anxiety and depression surveys. Conclusion This pilot clinical trial has a short duration and a small sample size. However, device adherence and quality of life questionnaires suggest a smartphone-connected wearable UV dosimeter is well accepted by an elderly population. This trial also indicates that a wearable UV dosimeter may be an effective behavioral change tool to reduce NMSC incidence in an elderly population with a prior history of AKs.Clinical trial registration: clinicaltrials.gov, identifier NCT03315286.
Collapse
Affiliation(s)
- Emmanuel L. P. Dumont
- Shade, Nutley, NJ, United States
- Hackensack Meridian Center for Discovery and Innovation, Nutley, NJ, United States
| | | | - Catherine Do
- Department of Pathology, New York University Langone Health, New York, NY, United States
| | | | - Melissa Barrer
- Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
| | - Khaled Ezzedine
- Department of Dermatology, University Hospital Henri Mondor, Créteil, France
| | - Jonathan H. Zippin
- Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
| | - George I. Varghese
- Department of Dermatology, Weill Cornell Medicine, New York, NY, United States
| |
Collapse
|
2
|
Do C, Jiang G, Cova G, Katsifis CC, Narducci DN, Yang J, Sakellaropoulos T, Vidal R, Lhoumaud P, Fara Regis F, Kakabadze N, Nora EP, Noyes M, Cheng X, Hansen AS, Skok JA. Brain and cancer associated binding domain mutations provide insight into CTCF's relationship with chromatin and its ability to act as a chromatin organizer. bioRxiv 2024:2024.01.11.575070. [PMID: 38370764 PMCID: PMC10871189 DOI: 10.1101/2024.01.11.575070] [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] [Indexed: 02/20/2024]
Abstract
Although only a fraction of CTCF motifs are bound in any cell type, and few occupied sites overlap cohesin, the mechanisms underlying cell-type specific attachment and ability to function as a chromatin organizer remain unknown. To investigate the relationship between CTCF and chromatin we applied a combination of imaging, structural and molecular approaches, using a series of brain and cancer associated CTCF mutations that act as CTCF perturbations. We demonstrate that binding and the functional impact of WT and mutant CTCF depend not only on the unique binding properties of each protein, but also on the genomic context of bound sites and enrichment of motifs for expressed TFs abutting these sites. Our studies also highlight the reciprocal relationship between CTCF and chromatin, demonstrating that the unique binding properties of WT and mutant proteins have a distinct impact on accessibility, TF binding, cohesin overlap, chromatin interactivity and gene expression programs, providing insight into their cancer and brain related effects.
Collapse
|
3
|
Sakellaropoulos T, Do C, Jiang G, Cova G, Meyn P, Dimartino D, Ramaswami S, Heguy A, Tsirigos A, Skok JA. MethNet: a robust approach to identify regulatory hubs and their distal targets in cancer. Res Sq 2023:rs.3.rs-3150386. [PMID: 37577603 PMCID: PMC10418566 DOI: 10.21203/rs.3.rs-3150386/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Aberrations in the capacity of DNA/chromatin modifiers and transcription factors to bind non-coding regions can lead to changes in gene regulation and impact disease phenotypes. However, identifying distal regulatory elements and connecting them with their target genes remains challenging. Here, we present MethNet, a pipeline that integrates large-scale DNA methylation and gene expression data across multiple cancers, to uncover novel cis regulatory elements (CREs) in a 1Mb region around every promoter in the genome. MethNet identifies clusters of highly ranked CREs, referred to as 'hubs', which contribute to the regulation of multiple genes and significantly affect patient survival. Promoter-capture Hi-C confirmed that highly ranked associations involve physical interactions between CREs and their gene targets, and CRISPRi based scRNA Perturb-seq validated the functional impact of CREs. Thus, MethNet-identified CREs represent a valuable resource for unraveling complex mechanisms underlying gene expression, and for prioritizing the verification of predicted non-coding disease hotspots.
Collapse
Affiliation(s)
- Theodore Sakellaropoulos
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Catherine Do
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Guimei Jiang
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Giulia Cova
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| | - Peter Meyn
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Dacia Dimartino
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Sitharam Ramaswami
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Adriana Heguy
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Aristotelis Tsirigos
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
- Applied Bioinformatics Laboratories, Office of Science & Research, NYU Grossman School of Medicine, New York, NY, USA
| | - Jane A Skok
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA
| |
Collapse
|
4
|
LaMarca EA, Saito A, Plaza-Jennings A, Espeso-Gil S, Hellmich A, Fernando MB, Javidfar B, Liao W, Estill M, Townsley K, Florio A, Ethridge JE, Do C, Tycko B, Shen L, Kamiya A, Tsankova NM, Brennand KJ, Akbarian S. R-loop landscapes in the developing human brain are linked to neural differentiation and cell-type specific transcription. bioRxiv 2023:2023.07.18.549494. [PMID: 37503149 PMCID: PMC10370098 DOI: 10.1101/2023.07.18.549494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Here, we construct genome-scale maps for R-loops, three-stranded nucleic acid structures comprised of a DNA/RNA hybrid and a displaced single strand of DNA, in the proliferative and differentiated zones of the human prenatal brain. We show that R-loops are abundant in the progenitor-rich germinal matrix, with preferential formation at promoters slated for upregulated expression at later stages of differentiation, including numerous neurodevelopmental risk genes. RNase H1-mediated contraction of the genomic R-loop space in neural progenitors shifted differentiation toward the neuronal lineage and was associated with transcriptomic alterations and defective functional and structural neuronal connectivity in vivo and in vitro. Therefore, R-loops are important for fine-tuning differentiation-sensitive gene expression programs of neural progenitor cells.
Collapse
Affiliation(s)
- Elizabeth A LaMarca
- Graduate School of Biomedical Science, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Pamela Sklar Division of Psychiatric Genomics, Department of Genetics and Genomics, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Atsushi Saito
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
| | - Amara Plaza-Jennings
- Graduate School of Biomedical Science, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sergio Espeso-Gil
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Allyse Hellmich
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Michael B Fernando
- Graduate School of Biomedical Science, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Pamela Sklar Division of Psychiatric Genomics, Department of Genetics and Genomics, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Behnam Javidfar
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Will Liao
- New York Genome Center, New York, NY 10013, USA
| | - Molly Estill
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kayla Townsley
- Graduate School of Biomedical Science, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Pamela Sklar Division of Psychiatric Genomics, Department of Genetics and Genomics, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Anna Florio
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
| | - James E Ethridge
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Catherine Do
- Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110, USA
| | - Benjamin Tycko
- Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ 07110, USA
| | - Li Shen
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Atsushi Kamiya
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
| | - Nadejda M Tsankova
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kristen J Brennand
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Pamela Sklar Division of Psychiatric Genomics, Department of Genetics and Genomics, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Current affiliation: Department of Psychiatry, Yale University, New Haven, CT 06511, USA
| | - Schahram Akbarian
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| |
Collapse
|
5
|
Orlacchio A, Weissinger D, Do C, Tycko B, Simeone DM, Gonda T. Abstract C041: Hypomethylating therapy induces a potential immuno-suppressive myeloid phenotype by altering cancer cell cytokine secretion in PDAC. Cancer Res 2022. [DOI: 10.1158/1538-7445.panca22-c041] [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: 11/17/2022]
Abstract
Abstract
Introduction: We have previously shown using the KPC (KrasLSL G12D/+; p53 r172H/+; Pdx1-Cre) mouse model of PDAC that sequential treatment with the DNA hypomethylating agents (HMA) followed by anti-PD-1 led to increased tumor necrosis, slowed tumor growth, increased tumor-infiltrating CD8+ cells, and significantly increased mean survival. However, acquired treatment resistance occurred, with emergence of a specific subtype of M2-polarized putatively immunosuppressive Chi3l3+ macrophages. In this study, we characterize the mechanism of polarization of these cells, define their function, and identify a potential therapeutic strategy to combine with epigentic therapy to prevent unfavourable macrophage polarization and improve the efficacy of epigenetic priming of immunotherapy against PDAC. Methods: Studies were conducted with primary macrophages (PM)e isolated from bone marrow (BMDM) or the peritoneum of 6-8 weeks mice and RAW264.7 cells were also used and exposed to conditioned media from primary KPC cell lines with and without previous treatment with the HMAs decitabine or azacytidine. The effect was compared with polarization by direct HMA, IFN-γ and IL-4. Gene set enrichment analysis was done on RNASeq data from myeloid cells and validated by RT-PCR. We used cytokine arrays and Western blot validation to identify secreted cytokines from KPC cells. Results: We profiled expression of RAW264.7 cells, BMDM and PMs following exposure to IL-4 or IFN-γ and identified a signature associated with each treatment (CD206, Fizz1, Tlr8, IGF1, Mgl2 associated with IL-4 and TNFα, CD86, CD64, CD40, NOS2 associated with IFN-γ). Direct exposure of myeloid cells to hypomethylating agents did not result in a significant polarization. We next used conditioned media of KPC cells to identify a hypomethylation specific effect and found a significant IL-4 like enrichment (Chi3l3, Arg1, Il4i1, Raet1a, Lgals4) and a HMA-specific myeloid signature (CD137, IL1a, Ccl2, Ccl7, Spp1) with treatment. To assess which cytokines might trigger this polarization, we employed cytokine arrays and identified a small number of candidate cytokines that are specific to hypomethylation induced polarization of myeloid cells, including CXCL1/2, CCL2, GM-CSF, FGF-21, IGFBP-6 and ICAM-1. Conclusions: Our results show that paracrine secretion of cytokines from cancer cells treated with HMA drugs, rather than direct effect of hypomethylating therapy on macrophages, is responsible for polarizing macrophages into an immunosuppressive subtype. We further identified several candidate cytokines secreted by cancer cells following hypomethylating therapy that may be relevant for this immunosuppressive polarization of macrophages and might be specific therapeutic targets in combination with hypomethylating therapy.
Citation Format: Arturo Orlacchio, Daniel Weissinger, Catherine Do, Benjamin Tycko, Diane M. Simeone, Tamas Gonda. Hypomethylating therapy induces a potential immuno-suppressive myeloid phenotype by altering cancer cell cytokine secretion in PDAC [abstract]. In: Proceedings of the AACR Special Conference on Pancreatic Cancer; 2022 Sep 13-16; Boston, MA. Philadelphia (PA): AACR; Cancer Res 2022;82(22 Suppl):Abstract nr C041.
Collapse
Affiliation(s)
- Arturo Orlacchio
- 1Department of Medicine, NYU Grossman School of Medicine, New York, NY,
| | - Daniel Weissinger
- 2Pancreatic Cancer Center, Perlmutter Cancer Center, NYU Langone Medical Center, New York, NY,
| | - Catherine Do
- 3Division of Genetics & Epigenetics, Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ,
| | - Benjamin Tycko
- 4Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, NJ
| | - Diane M. Simeone
- 2Pancreatic Cancer Center, Perlmutter Cancer Center, NYU Langone Medical Center, New York, NY,
| | - Tamas Gonda
- 1Department of Medicine, NYU Grossman School of Medicine, New York, NY,
| |
Collapse
|
6
|
Modrek A, Do C, Zhang Z, Deng Y, Karp J, Ezhilarasan R, Valor B, Cova G, Jafari M, Snuderl M, Tsirigos A, Skok J, Sulman E. EPCO-19. ADAPTIVE RESPONSES TO GENOME-WIDE DNA DAMAGE RESULT IN TOPOLOGIC GENOME REORGANIZATION IN GLIOBLASTOMA. Neuro Oncol 2022. [PMCID: PMC9660386 DOI: 10.1093/neuonc/noac209.454] [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: 11/16/2022] Open
Abstract
Abstract
In glioblastoma, treatment with radiation and chemotherapy leads to DNA-damage and most DNA breaks are faithfully repaired, but the impact on the epigenome is largely unknown. Using newly developed tools to enable these studies, we hypothesize that genome-wide DNA damage leads to local alterations in DNA-methylation, genome organization, and results in persistent gene-expression alterations near sites of repaired damage. We use patient-derived human glioblastoma stem-like cells (GSCs) as a model. DNA breaks are induced using (i) irradiation or (ii) a novel “multi-cut” CRISPR-Cas9 DNA break system followed by multi-omic profiling. With radiation, we find significant and wide-spread alterations in DNA-methylation after treating multiple glioblastoma cultures. However, it is challenging to study local alterations around sites of radiation induced damage because breaks are introduced at different sites in each cell, resulting in stochastic DNA methylation alterations. To circumvent this issue, we developed a multi-cut CRISPR-Cas9 DNA break system that targets 142 or 483 pre-defined loci. Induction of pre-mapped genome-wide cuts reproduces a similar level of toxicity as standard doses of radiation. To assess repair efficiency and confirm induction of breaks, we performed targeted sequencing of the 142 or 483 sites to allow for high coverage sequencing. To understand how DNA damage may lead to regional epigenetic and 3D chromatin organization changes, we performed HiC, Methylation-seq, ChIP-seq of the chromatin organizing factor CTCF and enhancer marker H3K27ac, as well as RNA-seq, before and after cut induction. Our findings show significant mega-base scale alterations in chromatin contacts centered around cut sites, enrichment of DNA methylation alterations at regulatory elements and altered gene-expression. The findings here provide a mechanistic view of the interplay between genome-wide DNA damage, DNA methylation and genome re-organization, and have wide ranging implications for the effect of DNA damage on the epigenome in glioblastoma.
Collapse
Affiliation(s)
- Aram Modrek
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Catherine Do
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Zeyan Zhang
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Yingwen Deng
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Jerome Karp
- NYU Grossman School of Medicine , New York City, NY , USA
| | | | - Belen Valor
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Giulia Cova
- NYU Grossman School of Medicine , New York City, NY , USA
| | | | | | | | - Jane Skok
- NYU Grossman School of Medicine , New York City, NY , USA
| | - Erik Sulman
- NYU Grossman School of Medicine, Department of Radiation Oncology , New York, NY , USA
| |
Collapse
|
7
|
Modrek A, Do C, Zhang Z, Ding Y, Karp J, Ezhilarasan R, Valor B, Cova G, Snuderl M, Tsirigos A, Skok J, Sulman E. DNA Damage Drives DNA Methylation and 3D Chromatin Organization Alterations in Glioblastoma. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
Do C, Vasquez PC, Soleimani M. Metabolic Alkalosis Pathogenesis, Diagnosis, and Treatment: Core Curriculum 2022. Am J Kidney Dis 2022; 80:536-551. [PMID: 35525634 PMCID: PMC10947768 DOI: 10.1053/j.ajkd.2021.12.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 06/30/2021] [Accepted: 12/03/2021] [Indexed: 02/02/2023]
Abstract
Metabolic alkalosis is a widespread acid-base disturbance, especially in hospitalized patients. It is characterized by the primary elevation of serum bicarbonate and arterial pH, along with a compensatory increase in Pco2 consequent to adaptive hypoventilation. The pathogenesis of metabolic alkalosis involves either a loss of fixed acid or a net accumulation of bicarbonate within the extracellular fluid. The loss of acid may be via the gastrointestinal tract or the kidney, whereas the sources of excess alkali may be via oral or parenteral alkali intake. Severe metabolic alkalosis in critically ill patients-arterial blood pH of 7.55 or higher-is associated with significantly increased mortality rate. The kidney is equipped with sophisticated mechanisms to avert the generation or the persistence (maintenance) of metabolic alkalosis by enhancing bicarbonate excretion. These mechanisms include increased filtration as well as decreased absorption and enhanced secretion of bicarbonate by specialized transporters in specific nephron segments. Factors that interfere with these mechanisms will impair the ability of the kidney to eliminate excess bicarbonate, therefore promoting the generation or impairing the correction of metabolic alkalosis. These factors include volume contraction, low glomerular filtration rate, potassium deficiency, hypochloremia, aldosterone excess, and elevated arterial carbon dioxide. Major clinical states are associated with metabolic alkalosis, including vomiting, aldosterone or cortisol excess, licorice ingestion, chloruretic diuretics, excess calcium alkali ingestion, and genetic diseases such as Bartter syndrome, Gitelman syndrome, and cystic fibrosis. In this installment in the AJKD Core Curriculum in Nephrology, we will review the pathogenesis of metabolic alkalosis; appraise the precipitating events; and discuss clinical presentations, diagnoses, and treatments of metabolic alkalosis.
Collapse
Affiliation(s)
- Catherine Do
- Division of Nephrology, University of New Mexico, and Veterans Administration Medical Center, Albuquerque, New Mexico
| | - Pamela C Vasquez
- Division of Nephrology, University of New Mexico, and Veterans Administration Medical Center, Albuquerque, New Mexico
| | - Manoocher Soleimani
- Division of Nephrology, Department of Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico.
| |
Collapse
|
9
|
Varghese G, Kaplan P, Do C, Barrer M, Ezzedine K, Zippin J, Dumont E. LB950 A randomised trial of a wearable uv dosimeter for skin cancer prevention. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Do C, Evans GJ, DeAguero J, Escobar GP, Lin HC, Wagner B. Dysnatremia in Gastrointestinal Disorders. Front Med (Lausanne) 2022; 9:892265. [PMID: 35646996 PMCID: PMC9136014 DOI: 10.3389/fmed.2022.892265] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/22/2022] [Indexed: 01/19/2023] Open
Abstract
The primary solute of the milieu intérieur is sodium and accompanying anions. The solvent is water. The kidneys acutely regulate homeostasis in filtration, secretion, and resorption of electrolytes, non-electrolytes, and minerals while balancing water retention and clearance. The gastrointestinal absorptive and secretory functions enable food digestion and water absorption needed to sustain life. Gastrointestinal perturbations including vomiting and diarrhea can lead to significant volume and electrolyte losses, overwhelming the renal homeostatic compensatory mechanisms. Dysnatremia, potassium and acid-base disturbances can result from gastrointestinal pathophysiologic processes. Understanding the renal and gastrointestinal contributions to homeostatis are important for the clinical evaluation of perturbed volume disturbances.
Collapse
Affiliation(s)
- Catherine Do
- Division of Nephrology, Department of Medicine, Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, NM, United States,New Mexico Veterans Administration Health Care System, Albuquerque, NM, United States,University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Gretta J. Evans
- University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Joshua DeAguero
- Division of Nephrology, Department of Medicine, Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, NM, United States,University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - G. Patricia Escobar
- Division of Nephrology, Department of Medicine, Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, NM, United States,University of New Mexico Health Sciences Center, Albuquerque, NM, United States
| | - Henry C. Lin
- New Mexico Veterans Administration Health Care System, Albuquerque, NM, United States
| | - Brent Wagner
- Division of Nephrology, Department of Medicine, Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, NM, United States,New Mexico Veterans Administration Health Care System, Albuquerque, NM, United States,University of New Mexico Health Sciences Center, Albuquerque, NM, United States,*Correspondence: Brent Wagner
| |
Collapse
|
11
|
Li M, Lyu C, Huang M, Do C, Tycko B, Lupo PJ, MacLeod SL, Randolph CE, Liu N, Witte JS, Hobbs CA. Mapping methylation quantitative trait loci in cardiac tissues nominates risk loci and biological pathways in congenital heart disease. BMC Genom Data 2021; 22:20. [PMID: 34112112 PMCID: PMC8194170 DOI: 10.1186/s12863-021-00975-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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] [Received: 12/18/2020] [Accepted: 06/02/2021] [Indexed: 12/27/2022] Open
Abstract
Background Most congenital heart defects (CHDs) result from complex interactions among genetic susceptibilities, epigenetic modifications, and maternal environmental exposures. Characterizing the complex relationship between genetic, epigenetic, and transcriptomic variation will enhance our understanding of pathogenesis in this important type of congenital disorder. We investigated cis-acting effects of genetic single nucleotide polymorphisms (SNPs) on local DNA methylation patterns within 83 cardiac tissue samples and prioritized their contributions to CHD risk by leveraging results of CHD genome-wide association studies (GWAS) and their effects on cardiac gene expression. Results We identified 13,901 potential methylation quantitative trait loci (mQTLs) with a false discovery threshold of 5%. Further co-localization analyses and Mendelian randomization indicated that genetic variants near the HLA-DRB6 gene on chromosome 6 may contribute to CHD risk by regulating the methylation status of nearby CpG sites. Additional SNPs in genomic regions on chromosome 10 (TNKS2-AS1 gene) and chromosome 14 (LINC01629 gene) may simultaneously influence epigenetic and transcriptomic variations within cardiac tissues. Conclusions Our results support the hypothesis that genetic variants may influence the risk of CHDs through regulating the changes of DNA methylation and gene expression. Our results can serve as an important source of information that can be integrated with other genetic studies of heart diseases, especially CHDs. Supplementary Information The online version contains supplementary material available at 10.1186/s12863-021-00975-2.
Collapse
Affiliation(s)
- Ming Li
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University Bloomington, 1025 E. Seventh Street, Bloomington, 47405, IN, USA.
| | - Chen Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University Bloomington, 1025 E. Seventh Street, Bloomington, 47405, IN, USA
| | - Manyan Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University Bloomington, 1025 E. Seventh Street, Bloomington, 47405, IN, USA
| | - Catherine Do
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | - Benjamin Tycko
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | | | | | | | - Nianjun Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Indiana University Bloomington, 1025 E. Seventh Street, Bloomington, 47405, IN, USA
| | - John S Witte
- University of California at San Francisco, San Francisco, CA, 94158, USA
| | - Charlotte A Hobbs
- Rady Children's Institute for Genomic Medicine, San Diego, CA, 92123, USA
| |
Collapse
|
12
|
Bruno F, DeAguero J, Do C, Lee DY, Tan C, Escobar GP, Wagner B. Overlapping roles of NADPH oxidase 4 for diabetic and gadolinium-based contrast agent-induced systemic fibrosis. Am J Physiol Renal Physiol 2021; 320:F617-F627. [PMID: 33615889 DOI: 10.1152/ajprenal.00456.2020] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Dozens of millions of people are exposed to gadolinium-based contrast agents annually for enhanced magnetic resonance imaging. Gadolinium-based contrast agents are known nephrotoxins and can trigger the potentially fatal condition of systemic fibrosis. Risk factors are practically entirely undefined. We examined the role of NADPH oxidase 4 (Nox4) in gadolinium-induced systemic disease. Age- and weight-matched mice were randomized to experimental diabetes (streptozotocin) and control groups followed by systemic gadolinium-based contrast agent treatment. Nox4-deficient mice were randomized to experimental diabetes and gadolinium-based contrast agent treatment. Skin fibrosis and cellular infiltration were apparent in both gadolinium-based contrast agent-treated and experimental diabetes groups. Similarly, both groups demonstrated renal pathologies with evidence of reactive oxygen species generation. Deletion of Nox4 abrogated both skin and renal pathology, whether from diabetes or gadolinium-based contrast agent treatment. These discoveries demonstrate the importance of Nox4 in gadolinium-based contrast agent- and diabetes-induced fibrosis.NEW & NOTEWORTHY A mouse model of gadolinium-based contrast agent- and diabetes-induced fibrosis was used to demonstrate the role of NADPH oxidase 4 (Nox4) in gadolinium-induced systemic disease. Using these models, we established the role of Nox4 as a mediator of reactive oxygen species generation and subsequent skin and kidney fibrosis. These novel findings have defined Nox-4-mediated mechanisms by which gadolinium-based contrast agents induce systemic diseases.
Collapse
Affiliation(s)
- Francesca Bruno
- Eboli Hospital "Maria SS Addolorata," UOC of Nephrology and Dialysis, Eboli, Italy
| | - Joshua DeAguero
- Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, New Mexico
| | - Catherine Do
- Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, New Mexico.,New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico
| | - Doug Yoon Lee
- University of Texas Health System, San Antonio, Texas
| | - Chunyan Tan
- University of Texas Health System, San Antonio, Texas
| | - G Patricia Escobar
- Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, New Mexico.,New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico
| | - Brent Wagner
- Kidney Institute of New Mexico, University of New Mexico Health Science Center, Albuquerque, New Mexico.,New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico
| |
Collapse
|
13
|
Gonda TA, Fang J, Salas M, Do C, Hsu E, Zhukovskaya A, Siegel A, Takahashi R, Lopez-Bujanda ZA, Drake CG, Manji GA, Wang TC, Olive KP, Tycko B. A DNA Hypomethylating Drug Alters the Tumor Microenvironment and Improves the Effectiveness of Immune Checkpoint Inhibitors in a Mouse Model of Pancreatic Cancer. Cancer Res 2020; 80:4754-4767. [PMID: 32816859 DOI: 10.1158/0008-5472.can-20-0285] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 06/26/2020] [Accepted: 07/30/2020] [Indexed: 11/16/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a lethal cancer that has proven refractory to immunotherapy. Previously, treatment with the DNA hypomethylating drug decitabine (5-aza-dC; DAC) extended survival in the KPC-Brca1 mouse model of PDAC. Here we investigated the effects of DAC in the original KPC model and tested combination therapy with DAC followed by immune checkpoint inhibitors (ICI). Four protocols were tested: PBS vehicle, DAC, ICI (anti-PD-1 or anti-VISTA), and DAC followed by ICI. For each single-agent and combination treatment, tumor growth was measured by serial ultrasound, tumor-infiltrating lymphoid and myeloid cells were characterized, and overall survival was assessed. Single-agent DAC led to increased CD4+ and CD8+ tumor-infiltrating lymphocytes (TIL), PD1 expression, and tumor necrosis while slowing tumor growth and modestly increasing mouse survival without systemic toxicity. RNA-sequencing of DAC-treated tumors revealed increased expression of Chi3l3 (Ym1), reflecting an increase in a subset of tumor-infiltrating M2-polarized macrophages. While ICI alone had modest effects, DAC followed by either of ICI therapies additively inhibited tumor growth and prolonged mouse survival. The best results were obtained using DAC followed by anti-PD-1, which extended mean survival from 26 to 54 days (P < 0.0001). In summary, low-dose DAC inhibits tumor growth and increases both TILs and a subset of tumor-infiltrating M2-polarized macrophages in the KPC model of PDAC, and DAC followed by anti-PD-1 substantially prolongs survival. Because M2-polarized macrophages are predicted to antagonize antitumor effects, targeting these cells may be important to enhance the efficacy of combination therapy with DAC plus ICI. SIGNIFICANCE: In a pancreatic cancer model, a DNA hypomethylating drug increases tumor-infiltrating effector T cells, increases a subset of M2 macrophages, and significantly prolongs survival in combination with immune checkpoint inhibitors.See related commentary by Nephew, p. 4610.
Collapse
Affiliation(s)
- Tamas A Gonda
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York. .,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.,Division of Gastroenterology and Hepatology, Department of Medicine, New York University, New York, New York
| | - Jarwei Fang
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York
| | - Martha Salas
- Division of Genetics & Epigenetics, Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, New Jersey
| | - Catherine Do
- Division of Genetics & Epigenetics, Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, New Jersey
| | - Emily Hsu
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Anna Zhukovskaya
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York
| | - Ariel Siegel
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York
| | - Ryota Takahashi
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York.,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Zoila A Lopez-Bujanda
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.,Graduate Program in Pathobiology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Charles G Drake
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Gulam A Manji
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Timothy C Wang
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York.,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Kenneth P Olive
- Department of Medicine, Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, New York.,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Benjamin Tycko
- Division of Gastroenterology and Hepatology, Department of Medicine, New York University, New York, New York. .,John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, New Jersey.,Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C
| |
Collapse
|
14
|
Do C, Dumont ELP, Salas M, Castano A, Mujahed H, Maldonado L, Singh A, DaSilva-Arnold SC, Bhagat G, Lehman S, Christiano AM, Madhavan S, Nagy PL, Green PHR, Feinman R, Trimble C, Illsley NP, Marder K, Honig L, Monk C, Goy A, Chow K, Goldlust S, Kaptain G, Siegel D, Tycko B. Allele-specific DNA methylation is increased in cancers and its dense mapping in normal plus neoplastic cells increases the yield of disease-associated regulatory SNPs. Genome Biol 2020; 21:153. [PMID: 32594908 PMCID: PMC7322865 DOI: 10.1186/s13059-020-02059-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 09/16/2019] [Accepted: 05/27/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Mapping of allele-specific DNA methylation (ASM) can be a post-GWAS strategy for localizing regulatory sequence polymorphisms (rSNPs). The advantages of this approach, and the mechanisms underlying ASM in normal and neoplastic cells, remain to be clarified. RESULTS We perform whole genome methyl-seq on diverse normal cells and tissues and three cancer types. After excluding imprinting, the data pinpoint 15,112 high-confidence ASM differentially methylated regions, of which 1838 contain SNPs in strong linkage disequilibrium or coinciding with GWAS peaks. ASM frequencies are increased in cancers versus matched normal tissues, due to widespread allele-specific hypomethylation and focal allele-specific hypermethylation in poised chromatin. Cancer cells show increased allele switching at ASM loci, but disruptive SNPs in specific classes of CTCF and transcription factor binding motifs are similarly correlated with ASM in cancer and non-cancer. Rare somatic mutations affecting these same motif classes track with de novo ASM. Allele-specific transcription factor binding from ChIP-seq is enriched among ASM loci, but most ASM differentially methylated regions lack such annotations, and some are found in otherwise uninformative "chromatin deserts." CONCLUSIONS ASM is increased in cancers but occurs by a shared mechanism involving disruptive SNPs in CTCF and transcription factor binding sites in both normal and neoplastic cells. Dense ASM mapping in normal plus cancer samples reveals candidate rSNPs that are difficult to find by other approaches. Together with GWAS data, these rSNPs can nominate specific transcriptional pathways in susceptibility to autoimmune, cardiometabolic, neuropsychiatric, and neoplastic diseases.
Collapse
Affiliation(s)
- Catherine Do
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA.
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA.
| | - Emmanuel L P Dumont
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - Martha Salas
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - Angelica Castano
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - Huthayfa Mujahed
- Department of Medicine, Huddinge, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Leonel Maldonado
- Department of Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21287, USA
| | - Arunjot Singh
- Division of Gastroenterology, Hepatology and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Sonia C DaSilva-Arnold
- Department of Obstetrics and Gynecology, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - Govind Bhagat
- Department of Pathology & Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA
- Division of Gastroenterology and Celiac Center, Department of Medicine, Columbia University Medical Center, New York, NY, 10032, USA
| | - Soren Lehman
- Department of Medicine, Huddinge, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Angela M Christiano
- Departments of Dermatology and Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA
| | - Subha Madhavan
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA
| | | | - Peter H R Green
- Division of Gastroenterology and Celiac Center, Department of Medicine, Columbia University Medical Center, New York, NY, 10032, USA
| | - Rena Feinman
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA
| | - Cornelia Trimble
- Department of Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD, 21287, USA
| | - Nicholas P Illsley
- Department of Obstetrics and Gynecology, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - Karen Marder
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, 10032, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Lawrence Honig
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, 10032, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Catherine Monk
- Departments of Psychiatry and Behavioral Medicine and Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Andre Goy
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA
| | - Kar Chow
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA
| | - Samuel Goldlust
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - George Kaptain
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
| | - David Siegel
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA
| | - Benjamin Tycko
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA.
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, 07601, USA.
- Lombardi Comprehensive Cancer Center of Georgetown University, Washington, DC, 20057, USA.
| |
Collapse
|
15
|
Do C, DeAguero J, Brearley A, Trejo X, Howard T, Escobar GP, Wagner B. Gadolinium-Based Contrast Agent Use, Their Safety, and Practice Evolution. ACTA ACUST UNITED AC 2020; 1:561-568. [PMID: 34423308 DOI: 10.34067/kid.0000272019] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Gadolinium-based contrast agents (GBCAs) have provided much needed image enhancement in magnetic resonance imaging (MRI) important in the advancement of disease diagnosis and treatment. The paramagnetic properties of ionized gadolinium have facilitated these advancements, but ionized gadolinium carries toxicity risk. GBCAs were formulated with organic chelates designed to reduce these toxicity risks from unbound gadolinium ions. They were preferred over iodinated contrast used in computed tomography and considered safe for use. As their use expanded, the development of new diseases associated with their use (including nephrogenic systemic fibrosis) has drawn more attention and ultimately caution with their clinical administration in those with impaired renal function. Use of GBCAs in those with preserved renal function was considered to be safe. However, in this new era with emerging clinical and experimental evidence of brain gadolinium deposition in those with repeated exposure, these safety assumptions are once again brought into question. This review article aims to add new perspectives in thinking about the role of GBCA in current clinical use. The new information begs for further discussion and consideration of the risk-benefit ratio of use of GBCAs.
Collapse
Affiliation(s)
- Catherine Do
- Kidney Institute of New Mexico, Albuquerque, New Mexico.,Renal Section, Medicine Service, New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico.,Department of Medicine, University of New Mexico Health Care System, Albuquerque, New Mexico
| | - Joshua DeAguero
- Kidney Institute of New Mexico, Albuquerque, New Mexico.,University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| | - Adrian Brearley
- Department of Earth and Planetary Science, University of New Mexico, Albuquerque, New Mexico
| | | | - Tamara Howard
- University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| | - G Patricia Escobar
- Kidney Institute of New Mexico, Albuquerque, New Mexico.,Renal Section, Medicine Service, New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico.,University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| | - Brent Wagner
- Kidney Institute of New Mexico, Albuquerque, New Mexico.,Renal Section, Medicine Service, New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico.,Department of Medicine, University of New Mexico Health Care System, Albuquerque, New Mexico.,University of New Mexico Health Sciences Center, Albuquerque, New Mexico
| |
Collapse
|
16
|
Dumont ELP, Tycko B, Do C. CloudASM: an ultra-efficient cloud-based pipeline for mapping allele-specific DNA methylation. Bioinformatics 2020; 36:3558-3560. [PMID: 32119067 PMCID: PMC7267820 DOI: 10.1093/bioinformatics/btaa149] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/28/2020] [Accepted: 02/25/2020] [Indexed: 11/13/2022] Open
Abstract
SUMMARY Methods for quantifying the imbalance in CpG methylation between alleles genome-wide have been described but their algorithmic time complexity is quadratic and their practical use requires painstaking attention to infrastructure choice, implementation and execution. To solve this problem, we developed CloudASM, a scalable, ultra-efficient, turn-key, portable pipeline on Google Cloud Platform (GCP) that uses a novel pipeline manager and GCP's serverless enterprise data warehouse. AVAILABILITY AND IMPLEMENTATION CloudASM is freely available in the GitHub repository https://github.com/TyckoLab/CloudASM and a sample dataset and its results are also freely available at https://console.cloud.google.com/storage/browser/cloudasm. CONTACT emmanuel.dumont@hmh-cdi.org.
Collapse
Affiliation(s)
- Emmanuel L P Dumont
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ 07110, USA
| | - Benjamin Tycko
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ 07110, USA
- Hackensack-Meridian Health School of Medicine at Seton Hall University, Nutley, NJ 07110, USA
- Lombardi Comprehensive Cancer, Center Georgetown University, Washington, DC 20007, USA
| | - Catherine Do
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ 07110, USA
| |
Collapse
|
17
|
Robakis TK, Lee S, Werner E, Liu G, Miller M, Wylie D, Champagne FA, Salas M, Do C, Tycko B, Monk C. DNA methylation patterns in T lymphocytes are generally stable in human pregnancies but CD3 methylation is associated with perinatal psychiatric symptoms. Brain Behav Immun Health 2020; 3:100044. [PMID: 34589835 PMCID: PMC8474679 DOI: 10.1016/j.bbih.2020.100044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 01/28/2020] [Accepted: 01/31/2020] [Indexed: 02/07/2023] Open
Abstract
Objectives To determine whether DNA methylation patterns in genes coding for selected T-lymphocyte proteins are associated with perinatal psychiatric distress or with complications of pregnancy. Methods T lymphocyte DNA was obtained from pregnant women across three time points in pregnancy and the postpartum period and epigenetic patterns were assessed using Illumina 450 K Methylation Beadchips. Seven selected genes critical for T cell function were analyzed for methylation changes during pregnancy and for associations of methylation patterns with psychiatric distress or with pregnancy complications, with particular attention paid to spatial aggregations of methyl groups, termed ‘hotspots,’ within the selected genes. Results In the candidate gene approach, DNA methylation density within a single cluster of 9 contiguous CpG loci within the CD3 gene was found to be strongly associated with anxiety and depression in mid- and late pregnancy, and weakly associated with the presence of complications of pregnancy. Average DNA methylation density across each of the seven genes examined, and assay-wide, was found to be relatively stable across pregnancy and postpartum, but methylation within the CD3 hotspot was more malleable and changes over time were coordinated across the nine cytosines in the hotspot. CD3 CpGs did not pass array-wide tests for significance, but CpG clusters in two other genes, DTNBP1 and OXSR1, showed array-wide significant associations with anxiety. Conclusions Despite the need for tolerating the fetal hemi-allograft, overall DNA methylation patterns in T lymphocytes are generally stable over the mid to late course of human pregnancies and postpartum. However, site-specific changes in DNA methylation density in CD3 appear linked to both symptoms of depression and anxiety in pregnancy and, less strongly, to adverse pregnancy outcomes. Associations exist between DNA methylation density in T cells and measures of stress and mental health in pregnant women. Global DNA methylation density is generally stable over the course of pregnancy. A subregion within the CD3 gene has unusually variable DNA methylation density and is associated with anxiety and depression. Spatial and gene specificity may be important elements of epigenetic regulation of immune function in pregnancy.
Collapse
Affiliation(s)
- Thalia K Robakis
- Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Seonjoo Lee
- Columbia University Department of Psychiatry, New York, NY, 10032, USA
| | - Elizabeth Werner
- Columbia University Department of Psychiatry, New York, NY, 10032, USA
| | - Grace Liu
- Columbia University Department of Psychiatry, New York, NY, 10032, USA
| | - Melissa Miller
- University of Texas at Austin Department of Psychology, Austin, TX, 78712, USA
| | - Dennis Wylie
- University of Texas at Austin Department of Psychology, Austin, TX, 78712, USA
| | - Frances A Champagne
- University of Texas at Austin Department of Psychology, Austin, TX, 78712, USA
| | - Martha Salas
- Hackensack Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | - Catherine Do
- Hackensack Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | - Benjamin Tycko
- Hackensack Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | - Catherine Monk
- Columbia University Department of Psychiatry, New York, NY, 10032, USA
| |
Collapse
|
18
|
Do C, Suhr J. C-30 The Relationships Between Phonemic and Semantic Fluency and Sleep Duration in Older Adults. Arch Clin Neuropsychol 2019. [DOI: 10.1093/arclin/acz034.192] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objective
Sleep deprivation through experimental sleep restriction negatively impacts performance on fluency measures, with stronger effects for phonemic fluency than semantic fluency. However, the relationship between naturalistic short sleep and fluency performance has not yet been examined in older adults. We compared older adults who reported long and short average sleep duration on semantic and phonemic fluency tasks.
Method
83 community-dwelling adults (M = 68.18 years old, SD = 9.08; 71.1% female) participated in a larger study examining sleep quality and cognition. As part of the large battery of sleep, health, and neuropsychological measures, current analyses focused on phonemic fluency (letters C,F,L) and the Semantic Fluency subtest of the Repeatable Battery for the Assessment of Neuropsychological Status. Sleep duration was based on self-report of the average number of hours they sleep per night. Covariates included age and self-reported levels of arousal at the time of testing. Short ( < 7 hours of sleep) and long (≥ 7 hours of sleep) sleepers did not differ in gender, p = .069, but did in age, p = .007, with short sleepers being older than long sleepers. Short sleepers also reported higher arousal at time of testing, p = .017.
Results
After controlling for age and current arousal, short sleepers had lower phonemic fluency scores than did long sleepers, p = .012. However, there was no difference between short and long sleepers on semantic fluency after accounting for the same covariates, p = .849.
Conclusion
These results replicate and extend previous findings of sleep deprivation impacting phonemic fluency and not semantic fluency, but for older adults in more naturalistic conditions of sleep deprivation.
Collapse
|
19
|
Kuhner D, Fiederer L, Aldinger J, Burget F, Völker M, Schirrmeister R, Do C, Boedecker J, Nebel B, Ball T, Burgard W. A service assistant combining autonomous robotics, flexible goal formulation, and deep-learning-based brain–computer interfacing. Robotics and Autonomous Systems 2019; 116:98-113. [DOI: 10.1016/j.robot.2019.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
|
20
|
Delahaye F, Do C, Kong Y, Ashkar R, Salas M, Tycko B, Wapner R, Hughes F. Correction: Genetic variants influence on the placenta regulatory landscape. PLoS Genet 2019; 15:e1008118. [PMID: 30978184 PMCID: PMC6461240 DOI: 10.1371/journal.pgen.1008118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
21
|
Do C, Drel V, Tan C, Lee D, Wagner B. Nephrogenic Systemic Fibrosis Is Mediated by Myeloid C-C Chemokine Receptor 2. J Invest Dermatol 2019; 139:2134-2143.e2. [PMID: 30978353 DOI: 10.1016/j.jid.2019.03.1145] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 12/15/2018] [Revised: 03/12/2019] [Accepted: 03/25/2019] [Indexed: 12/19/2022]
Abstract
Gadolinium-based contrast agents are implicated in several pathologic abnormalities (long-term retention in vital organs such as the skin and the brain) and are the cause of a sometimes fatal condition in patients, nephrogenic systemic fibrosis. Bone marrow-derived fibrocytes and the monocyte chemoattractant protein-1 inflammatory pathway have been implicated as mediators of the adverse effects induced by gadolinium-based contrast agents. Mechanistic studies are scant; therefore, a mouse model of nephrogenic systemic fibrosis was established. Dermal cellularity was increased in contrast-treated green fluorescent protein (GFP) chimeric mice. GFP in the skin and fibrosis were increased in the contrast-treated chimeric animals. Monocyte chemoattractant protein-1 and C-C chemokine receptor 2 were increased in the tissues from contrast-treated mice. C-C chemokine receptor 2-deficient recipients of GFP-expressing marrow had an abrogation of gadolinium-induced pathology and displayed less GFP-positive cells in the skin. Wild-type animals that received C-C chemokine receptor 2-deficient bone marrow had a complete abrogation of dermal pathology. That GFP levels and expression increase in the skin, in tandem with a fibrocyte marker, supports the blood-borne circulating fibrocyte hypothesis of the disease. As of now, fibrocyte trafficking has yet to be demonstrated. Importantly, our data demonstrate that the monocyte chemoattractant protein-1/C-C chemokine receptor 2 axis plays a critical role in the pathogenesis of nephrogenic systemic fibrosis.
Collapse
Affiliation(s)
- Catherine Do
- South Texas Veterans Health Care System, San Antonio, Texas, USA; University of Texas Health Science Center, San Antonio, Texas, USA
| | - Viktor Drel
- University of Texas Health Science Center, San Antonio, Texas, USA
| | - Chunyan Tan
- University of Texas Health Science Center, San Antonio, Texas, USA
| | - Doug Lee
- University of Texas Health Science Center, San Antonio, Texas, USA
| | - Brent Wagner
- Kidney Institute of New Mexico, Albuquerque, New Mexico, USA; University of New Mexico Health Science Center, Albuquerque, New Mexico, USA; New Mexico Veterans Administration Health Care System, Albuquerque, New Mexico, USA.
| |
Collapse
|
22
|
Ambrosini G, Do C, Tycko B, Realubit RB, Karan C, Musi E, Carvajal RD, Chua V, Aplin AE, Schwartz GK. Inhibition of NF-κB-Dependent Signaling Enhances Sensitivity and Overcomes Resistance to BET Inhibition in Uveal Melanoma. Cancer Res 2019; 79:2415-2425. [PMID: 30885979 DOI: 10.1158/0008-5472.can-18-3177] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/29/2019] [Accepted: 03/13/2019] [Indexed: 01/08/2023]
Abstract
Bromodomain and extraterminal protein inhibitors (BETi) are epigenetic therapies aimed to target dysregulated gene expression in cancer cells. Despite early successes of BETi in a range of malignancies, the development of drug resistance may limit their clinical application. Here, we evaluated the mechanisms of BETi resistance in uveal melanoma, a disease with little treatment options, using two approaches: a high-throughput combinatorial drug screen with the clinical BET inhibitor PLX51107 and RNA sequencing of BETi-resistant cells. NF-κB inhibitors synergistically sensitized uveal melanoma cells to PLX51107 treatment. Furthermore, genes involved in NF-κB signaling were upregulated in BETi-resistant cells, and the transcription factor CEBPD contributed to the mechanism of resistance. These findings suggest that inhibitors of NF-κB signaling may improve the efficacy of BET inhibition in patients with advanced uveal melanoma. SIGNIFICANCE: These findings provide evidence that inhibitors of NF-κB signaling synergize with BET inhibition in in vitro and in vivo models, suggesting a clinical utility of these targeted therapies in patients with uveal melanoma.
Collapse
Affiliation(s)
- Grazia Ambrosini
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.
| | - Catherine Do
- Division of Genetics & Epigenetics, Department of Biomedical Research, Hackensack-Meridian Health School of Medicine at Seton Hall University, Nutley, New Jersey
| | - Benjamin Tycko
- Division of Genetics & Epigenetics, Department of Biomedical Research, Hackensack-Meridian Health School of Medicine at Seton Hall University, Nutley, New Jersey
| | - Ronald B Realubit
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Charles Karan
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Elgilda Musi
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York
| | - Richard D Carvajal
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.,Division of Hematology/Oncology, Columbia University Medical Center, New York, New York
| | - Vivian Chua
- Cancer Biology and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Andrew E Aplin
- Cancer Biology and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Gary K Schwartz
- The Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.,Division of Hematology/Oncology, Columbia University Medical Center, New York, New York
| |
Collapse
|
23
|
Abstract
Emergence is complex behavior arising from the interactions of many simple constituents that do not display such behavior independently. Polyamidoxime (PAO) uranium adsorbents show such phenomena, as recent works articulate that the polymer binds uranium differently than the monomeric constituents. In order to investigate the origins of this emergent uranium-binding behavior, we synthesized a series of amidoxime polymers with low polydispersity and small molecules with lengths ranging from 1 to 125 repeat units. Following immersion in a uranyl-containing solution, the local, intermediate, and macroscopic structures were investigated by X-ray absorption fine structure (XAFS) spectroscopy, small angle neutron scattering (SANS), and dynamic light scattering (DLS). Fits of the extended XAFS (EXAFS) region revealed a progressive change in uranium coordination environment as a function of polymer molecular weight, identifying chain length as a driving force in emergent metal binding and resolving the controversy over how amidoxime adsorbents bind uranium.
Collapse
Affiliation(s)
- L D Earl
- Chemical Sciences Division, Physical Sciences Directorate, Oak Ridge National Laboratory, One Bethel Valley Road, P.O. Box 2008, Oak Ridge, TN 37831, USA.
| | | | | | | |
Collapse
|
24
|
Lee PH, Tse AC, Do C, Szeto GP, So BC, Lee RL. 0850 Association Between Smart Device Usage And Accelerometer-measured Sleep Efficiency Among Children And Adolescents In Hong Kong: A Cross-sectional Survey. Sleep 2018. [DOI: 10.1093/sleep/zsy061.849] [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: 11/15/2022] Open
Affiliation(s)
- P H Lee
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
| | - A C Tse
- Education University of Hong Kong, Hong Kong, HONG KONG
| | - C Do
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
| | - G P Szeto
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
| | - B C So
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
| | - R L Lee
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
- Hong Kong Polytechnic University, Hong Kong, HONG KONG
| |
Collapse
|
25
|
Wu HC, Do C, Andrulis IL, John EM, Daly MB, Buys SS, Chung WK, Knight JA, Bradbury AR, Keegan THM, Schwartz L, Krupska I, Miller RL, Santella RM, Tycko B, Terry MB. Breast cancer family history and allele-specific DNA methylation in the legacy girls study. Epigenetics 2018; 13:240-250. [PMID: 29436922 DOI: 10.1080/15592294.2018.1435243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Family history, a well-established risk factor for breast cancer, can have both genetic and environmental contributions. Shared environment in families as well as epigenetic changes that also may be influenced by shared genetics and environment may also explain familial clustering of cancers. Epigenetic regulation, such as DNA methylation, can change the activity of a DNA segment without a change in the sequence; environmental exposures experienced across the life course can induce such changes. However, genetic-epigenetic interactions, detected as methylation quantitative trait loci (mQTLs; a.k.a. meQTLs) and haplotype-dependent allele-specific methylation (hap-ASM), can also contribute to inter-individual differences in DNA methylation patterns. To identify differentially methylated regions (DMRs) associated with breast cancer susceptibility, we examined differences in white blood cell DNA methylation in 29 candidate genes in 426 girls (ages 6-13 years) from the LEGACY Girls Study, 239 with and 187 without a breast cancer family history (BCFH). We measured methylation by targeted massively parallel bisulfite sequencing (bis-seq) and observed BCFH DMRs in two genes: ESR1 (Δ4.9%, P = 0.003) and SEC16B (Δ3.6%, P = 0.026), each of which has been previously implicated in breast cancer susceptibility and pubertal development. These DMRs showed high inter-individual variability in methylation, suggesting the presence of mQTLs/hap-ASM. Using single nucleotide polymorphisms data in the bis-seq amplicon, we found strong hap-ASM in SEC16B (with allele specific-differences ranging from 42% to 74%). These findings suggest that differential methylation in genes relevant to breast cancer susceptibility may be present early in life, and that inherited genetic factors underlie some of these epigenetic differences.
Collapse
Affiliation(s)
- Hui-Chen Wu
- a Herbert Irving Comprehensive Cancer Center , Columbia University Medical Center , New York , NY.,b Department of Environmental Health Sciences , Mailman School of Public Health of Columbia University , New York , NY
| | - Catherine Do
- c John Theurer Cancer Center , Hackensack University Medical Center , Hackensack NJ
| | - Irene L Andrulis
- d Lunenfeld-Tanenbaum Research Institute , Sinai Health System , Toronto , Ontario.,e Departments of Molecular Genetics and Laboratory Medicine and Pathobiology , University of Toronto , Toronto , Ontario , Canada
| | - Esther M John
- f Cancer Prevention Institute of California , Fremont CA.,g Department of Health Research & Policy (Epidemiology) , and Stanford Cancer Institute, Stanford University School of Medicine , Stanford , CA
| | - Mary B Daly
- h Department of Clinical Genetics , Fox Chase Cancer Center , Philadelphia , PA
| | - Saundra S Buys
- i Department of Medicine and , Huntsman Cancer Institute, University of Utah Health Sciences Center , UT
| | - Wendy K Chung
- j Departments of Pediatrics ; Department of Medicine , Columbia University College of Physicians and Surgeons , New York , NY
| | - Julia A Knight
- d Lunenfeld-Tanenbaum Research Institute , Sinai Health System , Toronto , Ontario.,k Dalla Lana School of Public Health , University of Toronto , Toronto
| | - Angela R Bradbury
- l Departments of Medicine, Division of Hematology/Oncology, Department of Medical Ethics and Health Policy, Perelman School of Medicine , University of Pennsylvania , Philadelphia , PA
| | - Theresa H M Keegan
- m Center for Oncology Hematology Outcomes Research and Training (COHORT).,n Division of Hematology and Oncology , University of California Davis School of Medicine , Sacramento , CA
| | - Lisa Schwartz
- o Department of Pediatrics, Division of Oncology, Perelman School of Medicine , University of Pennsylvania , Philadelphia , PA.,p The Children's Hospital of Philadelphia , Philadelphia , PA
| | - Izabela Krupska
- a Herbert Irving Comprehensive Cancer Center , Columbia University Medical Center , New York , NY
| | - Rachel L Miller
- a Herbert Irving Comprehensive Cancer Center , Columbia University Medical Center , New York , NY.,j Departments of Pediatrics ; Department of Medicine , Columbia University College of Physicians and Surgeons , New York , NY
| | - Regina M Santella
- a Herbert Irving Comprehensive Cancer Center , Columbia University Medical Center , New York , NY.,b Department of Environmental Health Sciences , Mailman School of Public Health of Columbia University , New York , NY
| | - Benjamin Tycko
- c John Theurer Cancer Center , Hackensack University Medical Center , Hackensack NJ.,q Lombardi Comprehensive Cancer Center , Georgetown University , Washington , DC
| | - Mary Beth Terry
- a Herbert Irving Comprehensive Cancer Center , Columbia University Medical Center , New York , NY.,b Department of Environmental Health Sciences , Mailman School of Public Health of Columbia University , New York , NY.,r Imprints Center , Columbia University Medical Center , New York , NY.,s Department of Epidemiology , Mailman School of Public Health of Columbia University , New York , NY
| |
Collapse
|
26
|
Kang T, Qian S, Smith GS, Do C, Heller WT. Small-angle neutron scattering study of a dense microemulsion system formed with an ionic liquid. Soft Matter 2017; 13:7154-7160. [PMID: 28895963 DOI: 10.1039/c7sm01516j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mixtures of water, octane and 1-octanol with 1-tetradecyl-3-methylimidazolium chloride (C14MIM·Cl), often referred to as a surface active ionic liquid (SAIL), form water-in-oil microemulsions that have potential application as extraction media for various metal ions. Here, we present a structural study by small-angle neutron scattering (SANS) of dense microemulsions formed by surfactant-rich mixtures of these four compounds to understand how the SAIL can be used to tune the structures and properties of the microemulsions. The SANS experiments revealed that the microemulsions formed are composed of two phases, a water-in-oil microemulsion and a bicontinuous microemulsion, which becomes the dominant phase at high surfactant concentration. In this concentration regime, the surfactant film becomes more rigid, having a higher bending modulus that results from the parallel stacking of the imidazolium ring of the SAIL. At lower surfactant concentrations, the molecular packing of the SAIL does not change with the water content of the microemulsion. The results presented here correlate well with previously observed changes in the interaction between the IL cation and metal ions (Y. Tong, L. Han and Y. Yang, Ind. Eng. Chem. Res., 2012, 51, 16438-16443), while the capacity of the microemulsion system for water remains high enough for using the system as an extraction medium.
Collapse
Affiliation(s)
- T Kang
- Biology and Soft Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | | | | | | | | |
Collapse
|
27
|
Xu MM, Yin S, Siddiqui AA, Salem RR, Schrope B, Sethi A, Poneros JM, Gress FG, Genkinger JM, Do C, Brooks CA, Chabot JA, Kluger MD, Kowalski T, Loren DE, Aslanian H, Farrell JJ, Gonda TA. Comparison of the diagnostic accuracy of three current guidelines for the evaluation of asymptomatic pancreatic cystic neoplasms. Medicine (Baltimore) 2017; 96:e7900. [PMID: 28858107 PMCID: PMC5585501 DOI: 10.1097/md.0000000000007900] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Asymptomatic pancreatic cysts are a common clinical problem but only a minority of these cases progress to cancer. Our aim was to compare the accuracy to detect malignancy of the 2015 American Gastroenterological Association (AGA), the 2012 International Consensus/Fukuoka (Fukuoka guidelines [FG]), and the 2010 American College of Radiology (ACR) guidelines.We conducted a retrospective study at 3 referral centers for all patients who underwent resection for an asymptomatic pancreatic cyst between January 2008 and December 2013. We compared the accuracy of 3 guidelines in predicting high-grade dysplasia (HGD) or cancer in resected cysts. We performed logistic regression analyses to examine the association between cyst features and risk of HGD or cancer.A total of 269 patients met inclusion criteria. A total of 228 (84.8%) had a benign diagnosis or low-grade dysplasia on surgical pathology, and 41 patients (15.2%) had either HGD (n = 14) or invasive cancer (n = 27). Of the 41 patients with HGD or cancer on resection, only 3 patients would have met the AGA guideline's indications for resection based on the preoperative cyst characteristics, whereas 30/41 patients would have met the FG criteria for resection and 22/41 patients met the ACR criteria. The sensitivity, specificity, positive predictive value, negative predictive value of HGD, and/or cancer of the AGA guidelines were 7.3%, 88.2%, 10%, and 84.1%, compared to 73.2%, 45.6%, 19.5%, and 90.4% for the FG and 53.7%, 61%, 19.8%, and 88% for the ACR guidelines. In multivariable analysis, cyst size >3 cm, compared to ≤3 cm, (odds ratio [OR] = 2.08, 95% confidence interval [CI] = 1.11, 4.2) and each year increase in age (OR = 1.07, 95% CI = 1.03, 1.11) were positively associated with risk of HGD or cancer on resection.In patients with asymptomatic branch duct-intraductal papillary mucinous neoplasms or mucinous cystic neoplasms who underwent resection, the prevalence rate of HGD or cancer was 15.2%. Using the 2015 AGA criteria for resection would have missed 92.6% of patients with HGD or cancer. The more "inclusive" FG and ACR had a higher sensitivity for HGD or cancer but lower specificity. Given the current deficiencies of these guidelines, it will be important to determine the acceptable rate of false-positives in order to prevent a single true-positive.
Collapse
Affiliation(s)
- Ming-ming Xu
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - Shi Yin
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - Ali A. Siddiqui
- Division of Gastroenterology and Hepatology, Thomas Jefferson University Medical Center, Philadelphia, PA
| | - Ronald R. Salem
- Section of Surgical Oncology, Division of Surgery, Yale University School of Medicine, New Haven, CT
| | | | - Amrita Sethi
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - John M. Poneros
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - Frank G. Gress
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - Jeanine M. Genkinger
- Department of Epidemiology, Mailman School of Public Health
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY
| | - Catherine Do
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | - Christian A. Brooks
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| | | | | | - Thomas Kowalski
- Division of Gastroenterology and Hepatology, Thomas Jefferson University Medical Center, Philadelphia, PA
| | - David E. Loren
- Division of Gastroenterology and Hepatology, Thomas Jefferson University Medical Center, Philadelphia, PA
| | - Harry Aslanian
- Section of Digestive Disease, Yale University School of Medicine, New Haven, CT, USA
| | - James J. Farrell
- Section of Digestive Disease, Yale University School of Medicine, New Haven, CT, USA
| | - Tamas A. Gonda
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY
| |
Collapse
|
28
|
Jiang Y, Loh YHE, Rajarajan P, Hirayama T, Liao W, Kassim BS, Javidfar B, Hartley BJ, Kleofas L, Park RB, Labonte B, Ho SM, Chandrasekaran S, Do C, Ramirez BR, Peter CJ, C W JT, Safaie BM, Morishita H, Roussos P, Nestler EJ, Schaefer A, Tycko B, Brennand KJ, Yagi T, Shen L, Akbarian S. The methyltransferase SETDB1 regulates a large neuron-specific topological chromatin domain. Nat Genet 2017; 49:1239-1250. [PMID: 28671686 PMCID: PMC5560095 DOI: 10.1038/ng.3906] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 06/05/2017] [Indexed: 12/14/2022]
Abstract
We report locus-specific disintegration of megabase-scale chromosomal conformations in brain after neuronal ablation of Kmt1e/Setdb1 histone H3-lysine 9 methyltransferase, including a large topologically associated 1.2Mb domain conserved in human and mouse and encompassing >70 genes at the clustered Protocadherin (cPcdh) locus. TADcPcdh in mutant neurons showed abnormal accumulations of CTCF transcriptional regulator and 3D genome organizer at cryptic binding sites, converted into permissive state with DNA cytosine hypomethylation and histone hyperacetylation. Broadly upregulated expression across cPcdh included defective S-type Protocadherin single-cell stochastic constraint. Setdb1-dependent loop formations, bypassing 0.2–1Mb of linear genome, radiated from TADPcdh fringes towards cPcdh cis-regulatory sequences, counterbalanced shorter-range facilitative promoter-enhancer contacts and carried loop-bound polymorphisms associated with genetic risk for schizophrenia. We show that KRAB-zinc finger Setdb1 repressor complex, shielding neuronal 3D genomes from excess CTCF binding, is critically required for structural maintenance of TADcPcdh.
Collapse
Affiliation(s)
- Yan Jiang
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Yong-Hwee Eddie Loh
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Prashanth Rajarajan
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Teruyoshi Hirayama
- Kokoro-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Will Liao
- New York Genome Center, New York, New York, USA
| | - Bibi S Kassim
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Behnam Javidfar
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Brigham J Hartley
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Lisa Kleofas
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Royce B Park
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Benoit Labonte
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Seok-Man Ho
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sandhya Chandrasekaran
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Catherine Do
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Columbia University, New York, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, New York, New York, USA
| | - Brianna R Ramirez
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Cyril J Peter
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Julia T C W
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Brian M Safaie
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Hirofumi Morishita
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Panos Roussos
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Mental Illness Research, Education and Clinical Center, James J. Peters Virginia Medical Center, New York, New York, USA
| | - Eric J Nestler
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Anne Schaefer
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Benjamin Tycko
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Columbia University, New York, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, New York, New York, USA
| | - Kristen J Brennand
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Takeshi Yagi
- Kokoro-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Li Shen
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Schahram Akbarian
- Friedman Brain Institute and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| |
Collapse
|
29
|
Abstract
Studies on genetic-epigenetic interactions, including the mapping of methylation quantitative trait loci (mQTLs) and haplotype-dependent allele-specific DNA methylation (hap-ASM), have become a major focus in the post-genome-wide-association-study (GWAS) era. Such maps can nominate regulatory sequence variants that underlie GWAS signals for common diseases, ranging from neuropsychiatric disorders to cancers. Conversely, mQTLs need to be filtered out when searching for non-genetic effects in epigenome-wide association studies (EWAS). Sequence variants in CCCTC-binding factor (CTCF) and transcription factor binding sites have been mechanistically linked to mQTLs and hap-ASM. Identifying these sites can point to disease-associated transcriptional pathways, with implications for targeted treatment and prevention.
Collapse
Affiliation(s)
- Catherine Do
- Institute for Cancer Genetics and Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, 10032, USA
| | - Alyssa Shearer
- Institute for Cancer Genetics and Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, 10032, USA
| | - Masako Suzuki
- Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Mary Beth Terry
- Department of Epidemiology, Columbia University Mailman School of Public Health, and Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, 10032, USA
| | - Joel Gelernter
- Departments of Psychiatry, Genetics, and Neurobiology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - John M Greally
- Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Benjamin Tycko
- Institute for Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Taub Institute for Research on Alzheimer's disease and the Aging Brain, New York, NY, 10032, USA. .,Department of Pathology and Cell Biology, Columbia University, New York, NY, 10032, USA.
| |
Collapse
|
30
|
Weigel K, Pralle RS, Adams H, Cho K, Do C, White H. Prediction of whole‐genome risk for selection and management of hyperketonemia in Holstein dairy cattle. J Anim Breed Genet 2017; 134:275-285. [DOI: 10.1111/jbg.12259] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 01/15/2017] [Indexed: 12/21/2022]
Affiliation(s)
- K.A. Weigel
- Department of Dairy Science University of Wisconsin Madison WI USA
| | - R. S. Pralle
- Department of Dairy Science University of Wisconsin Madison WI USA
| | - H. Adams
- MOFA International Center for Biotechnology Cooperative Resources International Mt Horeb WI USA
| | - K. Cho
- Division of Animal Breeding and Genetics National Institute of Animal Science Cheonan Korea
| | - C. Do
- Division of Animal and Dairy Science Chungnam National University DaejeonKorea
| | - H.M. White
- Department of Dairy Science University of Wisconsin Madison WI USA
| |
Collapse
|
31
|
Abstract
Intravenous iodinated contrast is used in many contrasted imaging studies ranging from computed tomography to angiography. The risks of contrast-induced nephropathy (CIN) and its incidence have not been clearly defined. Most iodinated contrast media used today are hypertonic compared with serum osmolality and pose biological risks. However, the risk of CIN in the general population may be overestimated. Confounding risk factors may contribute to acute kidney injury other than attributable risk of contrast exposure. In high-risk populations such as in those with CKD, CIN risk may be higher and thus caution should be exerted with contrast exposure. The volumes of contrast should be minimized as much as possible and hemodynamic status should be optimized before contrast administration.
Collapse
|
32
|
Rathbun FM, Pralle RS, Bertics SJ, Armentano LE, Cho K, Do C, Weigel KA, White HM. Relationships between body condition score change, prior mid-lactation phenotypic residual feed intake, and hyperketonemia onset in transition dairy cows. J Dairy Sci 2017; 100:3685-3696. [DOI: 10.3168/jds.2016-12085] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/24/2017] [Indexed: 11/19/2022]
|
33
|
Yotova I, Hsu E, Do C, Gaba A, Sczabolcs M, Dekan S, Kenner L, Wenzl R, Tycko B. Epigenetic Alterations Affecting Transcription Factors and Signaling Pathways in Stromal Cells of Endometriosis. PLoS One 2017; 12:e0170859. [PMID: 28125717 PMCID: PMC5268815 DOI: 10.1371/journal.pone.0170859] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 10/14/2016] [Accepted: 01/11/2017] [Indexed: 12/15/2022] Open
Abstract
Endometriosis is characterized by growth of endometrial-like tissue outside the uterine cavity. Since its pathogenesis may involve epigenetic changes, we used Illumina 450K Methylation Beadchips to profile CpG methylation in endometriosis stromal cells compared to stromal cells from normal endometrium. We validated and extended the Beadchip data using bisulfite sequencing (bis-seq), and analyzed differential methylation (DM) at the CpG-level and by an element-level classification for groups of CpGs in chromatin domains. Genes found to have DM included examples encoding transporters (SLC22A23), signaling components (BDNF, DAPK1, ROR1, and WNT5A) and transcription factors (GATA family, HAND2, HOXA cluster, NR5A1, OSR2, TBX3). Intriguingly, among the TF genes with DM we also found JAZF1, a proto-oncogene affected by chromosomal translocations in endometrial stromal tumors. Using RNA-Seq we identified a subset of the DM genes showing differential expression (DE), with the likelihood of DE increasing with the extent of the DM and its location in enhancer elements. Supporting functional relevance, treatment of stromal cells with the hypomethylating drug 5aza-dC led to activation of DAPK1 and SLC22A23 and repression of HAND2, JAZF1, OSR2, and ROR1 mRNA expression. We found that global 5hmC is decreased in endometriotic versus normal epithelial but not stroma cells, and for JAZF1 and BDNF examined by oxidative bis-seq, found that when 5hmC is detected, patterns of 5hmC paralleled those of 5mC. Together with prior studies, these results define a consistent epigenetic signature in endometriosis stromal cells and nominate specific transcriptional and signaling pathways as therapeutic targets.
Collapse
Affiliation(s)
- Iveta Yotova
- Institute for Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
- Department of Gynecology and Gynecological Oncology, University Clinic of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
- * E-mail:
| | - Emily Hsu
- Institute for Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
| | - Catherine Do
- Institute for Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
| | - Aulona Gaba
- Department of Gynecology and Gynecological Oncology, University Clinic of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Matthias Sczabolcs
- Department of Pathology and Cell Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
| | - Sabine Dekan
- Department of Experimental Pathology, Clinical Institute of Pathology, University Clinic of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Lukas Kenner
- Department of Experimental Pathology, Clinical Institute of Pathology, University Clinic of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
- Pathology Laboratory Animal Pathology University of Veterinary Medicine Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Rene Wenzl
- Department of Gynecology and Gynecological Oncology, University Clinic of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Benjamin Tycko
- Institute for Cancer Genetics, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
- Department of Pathology and Cell Biology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York, United States of America
| |
Collapse
|
34
|
Abstract
An important line of postgenomic research seeks to understand how genetic factors can influence epigenetic patterning. Here we review epigenetic effects of chromosomal aneuploidies, focusing on findings in Down syndrome (DS, trisomy 21). Recent work in human DS and mouse models has shown that the extra chromosome 21 acts in trans to produce epigenetic changes, including differential CpG methylation (DS-DM), in specific sets of downstream target genes, mostly on other chromosomes. Mechanistic hypotheses emerging from these data include roles of chromosome 21-linked methylation pathway genes (DNMT3L and others) and transcription factor genes (RUNX1, OLIG2, GABPA, ERG and ETS2) in shaping the patterns of DS-DM. The findings may have broader implications for trans-acting epigenetic effects of chromosomal and subchromosomal aneuploidies in other human developmental and neuropsychiatric disorders, and in cancers.
Collapse
Affiliation(s)
- Catherine Do
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA
| | - Zhuo Xing
- The Children's Guild Foundation Down Syndrome Research Program, Genetics Program & Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Y Eugene Yu
- The Children's Guild Foundation Down Syndrome Research Program, Genetics Program & Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Benjamin Tycko
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA.,Taub Institute for Research on Alzheimer's disease & the Aging Brain, Columbia University, New York, NY 10032, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY 10032, USA.,Department of Pathology & Cell Biology, Columbia University, New York, NY 10032, USA
| |
Collapse
|
35
|
Gravelle P, Do C, Franchet C, Mueller S, Oberic L, Ysebaert L, Larocca LM, Hohaus S, Calmels MN, Frenois FX, Kridel R, Gascoyne RD, Laurent G, Brousset P, Valitutti S, Laurent C. Impaired functional responses in follicular lymphoma CD8 +TIM-3 + T lymphocytes following TCR engagement. Oncoimmunology 2016; 5:e1224044. [PMID: 27990323 DOI: 10.1080/2162402x.2016.1224044] [Citation(s) in RCA: 22] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/03/2016] [Accepted: 08/09/2016] [Indexed: 12/31/2022] Open
Abstract
Upregulation of T cell immunoglobulin-3 (TIM-3) has been associated with negative regulation of the immune response in chronic infection and cancer, including lymphoma. Here, we investigated the possible correlation between TIM-3 expression by ex vivo cytotoxic T cells (CTL) from follicular lymphoma (FL) biopsies and their functional unresponsiveness that could limit the favorable impact of CTL on disease progression. We report a high percentage of CD8+TIM-3+T cells in lymph nodes of FL patients. When compared to their CD8+TIM-3- counterparts, CD8+TIM-3+ T cells exhibited defective cytokine production following TCR engagement. Furthermore, CD8+TIM-3+ T cells display ex vivo markers of lytic granule release and remain unresponsive to further TCR-induced activation of the lytic machinery. Although confocal microscopy showed that TIM-3 expression on CD8+ T cells correlated with minor alterations of immunological synapse, a selective reduction of ERK signaling in CD8+TIM-3+T cells was observed by phospho-flow analysis. Finally, short relapse-free survival despite rituximab(R)-chemotherapy was observed in patients with high content of TIM-3+ cells and a poor infiltrate of granzyme B+ T cells in FL lymph nodes. Together, our data indicate that, besides selective TCR early signaling defects, TIM-3 expression correlates with unresponsiveness of ex vivo CD8+ T cells in FL. They show that scores based on the combination of exhaustion and cytolytic markers in FL microenvironment might be instrumental to identify patients at early risk of relapses following R-chemotherapy.
Collapse
Affiliation(s)
- Pauline Gravelle
- Centre de Physiopathologie de Toulouse Purpan, INSERM U1043, Toulouse, France; Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Laboratoire d'Excellence "TOUCAN," Toulouse, France; Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; CALYM Carnot Institute, Pierre-Bénite, France
| | - Catherine Do
- Institute for Cancer Genetics, Columbia University , New York, USA
| | - Camille Franchet
- Centre de Physiopathologie de Toulouse Purpan, INSERM U1043, Toulouse, France; Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Sabina Mueller
- Centre de Physiopathologie de Toulouse Purpan, INSERM U1043, Toulouse, France; Laboratoire d'Excellence "TOUCAN," Toulouse, France
| | - Lucie Oberic
- Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; Département d'Hématologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France
| | - Loïc Ysebaert
- Laboratoire d'Excellence "TOUCAN," Toulouse, France; Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; CALYM Carnot Institute, Pierre-Bénite, France; Université Toulouse III Paul-Sabatier, Toulouse, France; Département d'Hématologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Centre de Recherches en Cancérologie de Toulouse, INSERM UMR1037, Toulouse, France
| | - Luigi Maria Larocca
- Istituto di Anatomia Patologica, Università Cattolica del Sacro Cuore , Roma, Italy
| | - Stefan Hohaus
- Istituto di Ematologia, Università Cattolica del Sacro Cuore , Roma, Italy
| | | | - François-Xavier Frenois
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse , Toulouse, France
| | - Robert Kridel
- Center for Lymphoid Cancer, BC Cancer Agency , Vancouver, BC, Canada
| | - Randy D Gascoyne
- Center for Lymphoid Cancer, BC Cancer Agency , Vancouver, BC, Canada
| | - Guy Laurent
- Laboratoire d'Excellence "TOUCAN," Toulouse, France; Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; CALYM Carnot Institute, Pierre-Bénite, France; Université Toulouse III Paul-Sabatier, Toulouse, France; Département d'Hématologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Centre de Recherches en Cancérologie de Toulouse, INSERM UMR1037, Toulouse, France
| | - Pierre Brousset
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Laboratoire d'Excellence "TOUCAN," Toulouse, France; Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; CALYM Carnot Institute, Pierre-Bénite, France; Université Toulouse III Paul-Sabatier, Toulouse, France; Centre de Recherches en Cancérologie de Toulouse, INSERM UMR1037, Toulouse, France
| | - Salvatore Valitutti
- Centre de Physiopathologie de Toulouse Purpan, INSERM U1043, Toulouse, France; Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Laboratoire d'Excellence "TOUCAN," Toulouse, France; Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Camille Laurent
- Centre de Physiopathologie de Toulouse Purpan, INSERM U1043, Toulouse, France; Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse, Toulouse, France; Laboratoire d'Excellence "TOUCAN," Toulouse, France; Program Hospitalo-Universitaire en Cancérologie "CAPTOR," Toulouse, France; CALYM Carnot Institute, Pierre-Bénite, France; Université Toulouse III Paul-Sabatier, Toulouse, France; Centre de Recherches en Cancérologie de Toulouse, INSERM UMR1037, Toulouse, France
| |
Collapse
|
36
|
Mendioroz M, Do C, Jiang X, Liu C, Darbary HK, Lang CF, Lin J, Thomas A, Abu-Amero S, Stanier P, Temkin A, Yale A, Liu MM, Li Y, Salas M, Kerkel K, Capone G, Silverman W, Yu YE, Moore G, Wegiel J, Tycko B. Erratum to: Trans effects of chromosome aneuploidies on DNA methylation patterns in human Down syndrome and mouse models. Genome Biol 2016; 17:123. [PMID: 27282916 PMCID: PMC4901436 DOI: 10.1186/s13059-016-0949-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 04/13/2016] [Indexed: 11/17/2022] Open
Affiliation(s)
- Maite Mendioroz
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Catherine Do
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA.
| | - Xiaoling Jiang
- The Children's Guild Foundation Down Syndrome Research Program, Genetics Program and Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY, 14263, USA
| | - Chunhong Liu
- The Children's Guild Foundation Down Syndrome Research Program, Genetics Program and Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY, 14263, USA
| | - Huferesh K Darbary
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Charles F Lang
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - John Lin
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Anna Thomas
- Fetal Growth and Development Group, Clinical and Molecular Genetics Unit, UCL Institute of Child Health, London, WC1N 1EH, UK
| | - Sayeda Abu-Amero
- Fetal Growth and Development Group, Clinical and Molecular Genetics Unit, UCL Institute of Child Health, London, WC1N 1EH, UK
| | - Philip Stanier
- Fetal Growth and Development Group, Clinical and Molecular Genetics Unit, UCL Institute of Child Health, London, WC1N 1EH, UK
| | - Alexis Temkin
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Alexander Yale
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Meng-Min Liu
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Yang Li
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Martha Salas
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - Kristi Kerkel
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA
| | - George Capone
- Department of Psychology, Kennedy Kreiger Institute, John Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Wayne Silverman
- Department of Psychology, Kennedy Kreiger Institute, John Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Y Eugene Yu
- The Children's Guild Foundation Down Syndrome Research Program, Genetics Program and Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, NY, 14263, USA
| | - Gudrun Moore
- Fetal Growth and Development Group, Clinical and Molecular Genetics Unit, UCL Institute of Child Health, London, WC1N 1EH, UK
| | - Jerzy Wegiel
- Department of Developmental Neurobiology, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, 10314, USA
| | - Benjamin Tycko
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain and Institute for Cancer Genetics, Columbia University Medical Center, New York, NY, 10032, USA. .,Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA.
| |
Collapse
|
37
|
Laurent C, Fabiani B, Do C, Tchernonog E, Cartron G, Gravelle P, Amara N, Malot S, Palisoc MM, Copie-Bergman C, Glehen AT, Copin MC, Brousset P, Pittaluga S, Jaffe ES, Coppo P. Immune-checkpoint expression in Epstein-Barr virus positive and negative plasmablastic lymphoma: a clinical and pathological study in 82 patients. Haematologica 2016; 101:976-84. [PMID: 27175027 DOI: 10.3324/haematol.2016.141978] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/03/2016] [Indexed: 12/14/2022] Open
Abstract
Plasmablastic lymphoma is a rare and aggressive diffuse large B-cell lymphoma commonly associated with Epstein-Barr virus co-infection that most often occurs in the context of human immunodeficiency virus infection. Therefore, its immune escape strategy may involve the upregulation of immune-checkpoint proteins allowing the tumor immune evasion. However, the expression of these molecules was poorly studied in this lymphoma. We have investigated 82 plasmablastic lymphoma cases of whom half were Epstein-Barr virus positive. Although they harbored similar pathological features, Epstein-Barr virus positive plasmablastic lymphomas showed a significant increase in MYC gene rearrangement and had a better 2-year event-free survival than Epstein-Barr virus negative cases (P=0.049). Immunostains for programmed cell death-1, programmed cell death-ligand 1, indole 2,3-dioxygenase and dendritic cell specific C-type lectin showed a high or moderate expression by the microenvironment cells in 60%-72% of cases, whereas CD163 was expressed in almost all cases. Tumor cells also expressed programmed cell death-1 and its ligand in 22.5% and 5% of cases, respectively. Both Epstein-Barr virus positive and negative plasmablastic lymphomas exhibited a high immune-checkpoint score showing that it involves several pathways of immune escape. However, Epstein-Barr virus positive lymphomas exhibited a higher expression of programmed cell death-1 and its ligand in both malignant cells and microenvironment as compared to Epstein-Barr virus negative cases. In conclusion, plasmablastic lymphoma expresses immune-checkpoint proteins through both malignant cells and the tumor microenvironment. The expression of programmed cell death-1 and its ligand constitutes a strong rationale for testing monoclonal antibodies in this often chemoresistant disease.
Collapse
Affiliation(s)
- Camille Laurent
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole, Toulouse, France INSERM, U.1037, Centre de Recherche en Cancérologie de Toulouse-Purpan, Toulouse, France
| | - Bettina Fabiani
- Département de Pathologie, AP-HP, Hôpital Saint-Antoine, Paris, France
| | - Catherine Do
- Institute for Cancer Genetics, Columbia University, New York, NY, USA
| | | | - Guillaume Cartron
- Service d'Hematologie, Hôpital Gui de Chauliac-Saint Eloi, Montpellier, France
| | - Pauline Gravelle
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole, Toulouse, France INSERM, U.1037, Centre de Recherche en Cancérologie de Toulouse-Purpan, Toulouse, France
| | - Nadia Amara
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole, Toulouse, France
| | - Sandrine Malot
- Service d'Hématologie, AP-HP, Hôpital Saint-Antoine, Paris, France Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France
| | | | - Christiane Copie-Bergman
- Département de Pathologie, AP-HP, Groupe Hospitalier Henri Mondor - Albert henevier, Créteil, France
| | | | | | - Pierre Brousset
- Département de Pathologie, Institut Universitaire du Cancer-Oncopole, Toulouse, France INSERM, U.1037, Centre de Recherche en Cancérologie de Toulouse-Purpan, Toulouse, France
| | - Stefania Pittaluga
- Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD, USA
| | - Elaine S Jaffe
- Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD, USA
| | - Paul Coppo
- Service d'Hématologie, AP-HP, Hôpital Saint-Antoine, Paris, France Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France UPMC, Université Paris VI, France Inserm U1170, Institut Gustave Roussy, Villejuif, France
| |
Collapse
|
38
|
Do C, Lang C, Lin J, Darbary H, Krupska I, Gaba A, Petukhova L, Vonsattel JP, Gallagher M, Goland R, Clynes R, Dwork A, Kral J, Monk C, Christiano A, Tycko B. Mechanisms and Disease Associations of Haplotype-Dependent Allele-Specific DNA Methylation. Am J Hum Genet 2016; 98:934-955. [PMID: 27153397 DOI: 10.1016/j.ajhg.2016.03.027] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/25/2016] [Indexed: 10/21/2022] Open
Abstract
Haplotype-dependent allele-specific methylation (hap-ASM) can impact disease susceptibility, but maps of this phenomenon using stringent criteria in disease-relevant tissues remain sparse. Here we apply array-based and Methyl-Seq approaches to multiple human tissues and cell types, including brain, purified neurons and glia, T lymphocytes, and placenta, and identify 795 hap-ASM differentially methylated regions (DMRs) and 3,082 strong methylation quantitative trait loci (mQTLs), most not previously reported. More than half of these DMRs have cell type-restricted ASM, and among them are 188 hap-ASM DMRs and 933 mQTLs located near GWAS signals for immune and neurological disorders. Targeted bis-seq confirmed hap-ASM in 12/13 loci tested, including CCDC155, CD69, FRMD1, IRF1, KBTBD11, and S100A(∗)-ILF2, associated with immune phenotypes, MYT1L, PTPRN2, CMTM8 and CELF2, associated with neurological disorders, NGFR and HLA-DRB6, associated with both immunological and brain disorders, and ZFP57, a trans-acting regulator of genomic imprinting. Polymorphic CTCF and transcription factor (TF) binding sites were over-represented among hap-ASM DMRs and mQTLs, and analysis of the human data, supplemented by cross-species comparisons to macaques, indicated that CTCF and TF binding likelihood predicts the strength and direction of the allelic methylation asymmetry. These results show that hap-ASM is highly tissue specific; an important trans-acting regulator of genomic imprinting is regulated by this phenomenon; and variation in CTCF and TF binding sites is an underlying mechanism, and maps of hap-ASM and mQTLs reveal regulatory sequences underlying supra- and sub-threshold GWAS peaks in immunological and neurological disorders.
Collapse
|
39
|
Wang E, Do C, Tycko B, Christiano A. 409 Epigenetic regulation of alopecia areata. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
40
|
Zhu J, Han Y, Kumar R, He Y, Hong K, Bonnesen PV, Sumpter BG, Smith SC, Smith GS, Ivanov IN, Do C. Controlling molecular ordering in solution-state conjugated polymers. Nanoscale 2015; 7:15134-15141. [PMID: 26242896 DOI: 10.1039/c5nr02037a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Rationally encoding molecular interactions that can control the assembly structure and functional expression in a solution of conjugated polymers hold great potential for enabling optimal organic optoelectronic and sensory materials. In this work, we show that thermally-controlled and surfactant-guided assembly of water-soluble conjugated polymers in aqueous solution is a simple and effective strategy to generate optoelectronic materials with the desired molecular ordering. We have studied a conjugated polymer consisting of a hydrophobic thiophene backbone and hydrophilic, thermo-responsive ethylene oxide side groups, which shows a step-wise, multi-dimensional assembly in water. By incorporating the polymer into phase-segregated domains of an amphiphilic surfactant in solution, we demonstrate that both chain conformation and degree of molecular ordering of the conjugated polymer can be tuned in hexagonal, micellar and lamellar phases of the surfactant solution. The controlled molecular ordering in conjugated polymer assembly is demonstrated as a key factor determining the electronic interaction and optical function.
Collapse
Affiliation(s)
- J Zhu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak ridge, TN 37831, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Zhu J, Han Y, Kumar R, He Y, Hong K, Bonnesen PV, Sumpter BG, Smith SC, Smith GS, Ivanov IN, Do C. Correction: Controlling molecular ordering in solution-state conjugated polymers. Nanoscale 2015; 7:15507. [PMID: 26340069 DOI: 10.1039/c5nr90161h] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Correction for 'Controlling molecular ordering in solution-state conjugated polymers' by J. Zhu et al., Nanoscale, 2015, DOI: 10.1039/c5nr02037a.
Collapse
Affiliation(s)
- J Zhu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak ridge, TN 37831, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Laurent C, Do C, Gourraud PA, de Paiva GR, Valmary S, Brousset P. Prevalence of Common Non-Hodgkin Lymphomas and Subtypes of Hodgkin Lymphoma by Nodal Site of Involvement: A Systematic Retrospective Review of 938 Cases. Medicine (Baltimore) 2015; 94:e987. [PMID: 26107683 PMCID: PMC4504656 DOI: 10.1097/md.0000000000000987] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Non-Hodgkin lymphoma (NHL) and Hodgkin lymphoma (HL) represent a heterogeneous group of malignant lymphoid tumors, which have distinct histological and/or biological characteristics with preferential nodal involvement. However, none of the previous studies have assessed the prevalence of common NHL and HL subtypes at each nodal site of involvement. The aim of our study was to determine the prevalence of HL and NHL subtypes depending on their nodal sites of involvement.We conducted a single-center retrospective study of 938 lymphoma cases diagnosed in the Pathology Department of Toulouse Purpan Hospital in France between 2001 and 2008, taking into account the site that corresponded to the diagnostic biopsy. The most frequent sites were cervical lymph nodes (36.8% of all cases), inguinal lymph nodes (16.4%), axillary lymph nodes (11.9%), and supraclavicular lymph nodes (11%). We found an unexpected association between intraparotid nodes and nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) and between inguinal nodes and follicular lymphoma. The risk of having classical Hodgkin lymphoma (CHL) was 15 times greater in patients with mediastinal lymphoma compared to those with other sites of involvement. Regarding HL, nodal and extranodal mediastinal sites and supraclavicular nodes were more likely to be involved by nodular sclerosis Hodgkin lymphoma (NSCHL). In addition, intra-abdominal lymph nodes were more frequently involved by lymphocyte depleted Hodgkin lymphoma compared to inguinal nodes where NLPHL predominated.Our study shows that some lymph node sites have a disproportionate prevalence of specific subtypes of lymphoma. Identifying these sites may aid to diagnose and better elucidate the pathogenesis of these tumors.
Collapse
Affiliation(s)
- Camille Laurent
- From the Département de Pathologie, Institut Universitaire du Cancer-Oncopole de Toulouse (CL, CD, GRdP, PB); Centre de Recherches en Cancérologie de Toulouse, INSERM UMR1037 (CL, PB); Université Toulouse III Paul-Sabatier (CL, PB); Laboratoire d'Excellence 'TOUCAN', Toulouse, France (CL, PB); Institute for Cancer Genetics, Columbia University, New York, NY (CD); UCSF School of Medicine, Department Neurology, San Francisco, CA, USA (P-AG); and Laboratoire d'Anatomie Pathologique, CHU Besançon et Université de Franche-Comté, France (SV)
| | | | | | | | | | | |
Collapse
|
43
|
Abstract
MYC deregulation is a driver of many human cancers. Altering the balance of MYC protein levels at the level of transcription, protein stability, or turnover is sufficient to transform cells to a tumorigenic phenotype. While direct targeting of MYC is difficult, specific genetic vulnerabilities of MYC-deregulated cells could be exploited to selectively inhibit their growth. Using a genome-wide shRNA screen, we identified 78 candidate genes, which are required for survival of human mammary epithelial cells with elevated MYC levels. Among the candidates, we validated and characterized FBXW7, a component of the SCF-like ubiquitin ligase complex that targets MYC for proteasomal degradation. Down-regulation of FBXW7 leads to synergistic accumulation of cellular and active chromatin-bound MYC, while protein levels of other FBXW7 targets appear unaffected. Over a four-week time course, continuous FBXW7 down-regulation and MYC activation together cause an accumulation of cells in S-phase and G2/M-phase of the cell cycle. Under these conditions, we also observe elevated chromatin-bound levels of CDC45, suggesting increased DNA replication stress. Consistent with these results, FBXW7 down-regulation alone decreases the survival of T47D breast cancer cells. These results establish that FBXW7 down-regulation is synthetic lethal with MYC, and that MYC is a critical target of FBXW7 in breast epithelial cells.
Collapse
Affiliation(s)
- Mai Sato
- Department of Pathology and Cell Biology, Columbia University, New York, USA
- Institute for Cancer Genetics, Columbia University, New York, USA
| | - Ruth Rodriguez-Barrueco
- Institute for Cancer Genetics, Columbia University, New York, USA
- Department of Pathology, Mount Sinai School of Medicine, New York, USA
| | - Jiyang Yu
- Department of Biomedical Informatics, Columbia University, New York, USA
| | - Catherine Do
- Institute for Cancer Genetics, Columbia University, New York, USA
| | - Jose M. Silva
- Department of Pathology and Cell Biology, Columbia University, New York, USA
- Institute for Cancer Genetics, Columbia University, New York, USA
- Department of Pathology, Mount Sinai School of Medicine, New York, USA
| | - Jean Gautier
- Institute for Cancer Genetics, Columbia University, New York, USA
- Department of Genetics and Development, Columbia University, New York, USA
| |
Collapse
|
44
|
Dumont ELP, Do C, Hess H. Molecular wear of microtubules propelled by surface-adhered kinesins. Nat Nanotechnol 2015; 10:166-169. [PMID: 25622231 DOI: 10.1038/nnano.2014.334] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 12/17/2014] [Indexed: 06/04/2023]
Abstract
Wear is the progressive loss of material from a body caused by contact and relative movement and is a major concern in both engineering and biology. Advances in nanotechnology have allowed the origins of wear processes to be studied at the atomic and molecular scale, but also demand that wear in nanoscale systems can be predicted and controlled. Biomolecular systems can undergo a range of active movements at the nanoscale, which are enabled by the transduction of chemical energy into mechanical work by polymerization processes and motor proteins. The active movements are accompanied by dissipative processes that can be conceptually understood as 'protein friction'. Here, we show that wear also occurs in an in vitro system consisting of microtubules gliding across a surface coated with kinesin-1 motor proteins, and that energetic considerations suggest a molecule-by-molecule removal of tubulin proteins. The rates of removal show a complex dependence on sliding velocity and kinesin density, which, in contrast to the friction behaviour between microtubules and kinesin-8, cannot be explained by simple chemical reaction kinetics.
Collapse
Affiliation(s)
- Emmanuel L P Dumont
- 1] Department of Biomedical Engineering, Columbia University, New York, New York 10027, USA [2] The Jacobs Technion-Cornell Institute at Cornell Tech, 111 8th Avenue #302, New York, New York 10011, USA
| | - Catherine Do
- Institute for Cancer Genetics, Columbia University Medical Center, New York, New York 10032, USA
| | - Henry Hess
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, USA
| |
Collapse
|
45
|
Najib S, Kowalski-Chauvel A, Do C, Roche S, Cohen-Jonathan-Moyal E, Seva C. Progastrin a new pro-angiogenic factor in colorectal cancer. Oncogene 2014; 34:3120-30. [DOI: 10.1038/onc.2014.255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 06/25/2014] [Accepted: 07/03/2014] [Indexed: 01/02/2023]
|
46
|
Abstract
It has been presupposed that the thermodynamic stability constant (K(therm)) of gadolinium-based MRI chelates relate to the risk of precipitating nephrogenic systemic fibrosis. The present study compared low-K(therm) gadodiamide with high-K(therm) gadoteridol in cultured fibroblasts and rats with uninephrectomies. Gadolinium content was assessed using scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy in paraffin-embedded tissues. In vitro, fibroblasts demonstrated dose-dependent fibronectin generation, transforming growth factor-β production, and expression of activated myofibroblast stress fiber protein α-smooth muscle actin. There were negligible differences with respect to toxicity or proliferation between the two contrast agents. In the rodent model, gadodiamide treatment led to greater skin fibrosis and dermal cellularity than gadoteridol. In the kidney, both contrast agents led to proximal tubule vacuolization and increased fibronectin accumulation. Despite large detectable gadolinium signals in the spleen, skin, muscle, and liver from the gadodiamide-treated group, contrast-induced fibrosis appeared to be limited to the skin and kidney. These findings support the hypothesis that low-K(therm) chelates have a greater propensity to elicit nephrogenic systemic fibrosis and demonstrate that certain tissues are resistant to these effects.
Collapse
Affiliation(s)
- Catherine Do
- University of Texas Health Science Center at San Antonio, San Antonio, Texas; and
| | - Jeffrey L Barnes
- University of Texas Health Science Center at San Antonio, San Antonio, Texas; and South Texas Veterans Health Care System, San Antonio, Texas
| | - Chunyan Tan
- University of Texas Health Science Center at San Antonio, San Antonio, Texas; and
| | - Brent Wagner
- South Texas Veterans Health Care System, San Antonio, Texas
| |
Collapse
|
47
|
Menard D, Chan ER, Benedet C, Ratsimbasoa A, Kim S, Chim P, Do C, Witkowski B, Durand R, Thellier M, Severini C, Legrand E, Musset L, Nour BYM, Mercereau-Puijalon O, Serre D, Zimmerman PA. Whole genome sequencing of field isolates reveals a common duplication of the Duffy binding protein gene in Malagasy Plasmodium vivax strains. PLoS Negl Trop Dis 2013; 7:e2489. [PMID: 24278487 PMCID: PMC3836732 DOI: 10.1371/journal.pntd.0002489] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [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: 02/28/2013] [Accepted: 09/07/2013] [Indexed: 12/02/2022] Open
Abstract
Background Plasmodium vivax is the most prevalent human malaria parasite, causing serious public health problems in malaria-endemic countries. Until recently the Duffy-negative blood group phenotype was considered to confer resistance to vivax malaria for most African ethnicities. We and others have reported that P. vivax strains in African countries from Madagascar to Mauritania display capacity to cause clinical vivax malaria in Duffy-negative people. New insights must now explain Duffy-independent P. vivax invasion of human erythrocytes. Methods/Principal Findings Through recent whole genome sequencing we obtained ≥70× coverage of the P. vivax genome from five field-isolates, resulting in ≥93% of the Sal I reference sequenced at coverage greater than 20×. Combined with sequences from one additional Malagasy field isolate and from five monkey-adapted strains, we describe here identification of DNA sequence rearrangements in the P. vivax genome, including discovery of a duplication of the P. vivax Duffy binding protein (PvDBP) gene. A survey of Malagasy patients infected with P. vivax showed that the PvDBP duplication was present in numerous locations in Madagascar and found in over 50% of infected patients evaluated. Extended geographic surveys showed that the PvDBP duplication was detected frequently in vivax patients living in East Africa and in some residents of non-African P. vivax-endemic countries. Additionally, the PvDBP duplication was observed in travelers seeking treatment of vivax malaria upon returning home. PvDBP duplication prevalence was highest in west-central Madagascar sites where the highest frequencies of P. vivax-infected, Duffy-negative people were reported. Conclusions/Significance The highly conserved nature of the sequence involved in the PvDBP duplication suggests that it has occurred in a recent evolutionary time frame. These data suggest that PvDBP, a merozoite surface protein involved in red cell adhesion is rapidly evolving, possibly in response to constraints imposed by erythrocyte Duffy negativity in some human populations. Malaria results from infection of human red blood cells (RBC) by Plasmodium parasite's merozoite. For Plasmodium vivax the process of RBC invasion has been hypothesized to depend on interactions between the parasite's Duffy binding protein (PvDBP) and human Duffy blood group antigen because Duffy-negative people (most often people of African descent) were shown to be highly resistant to RBC infection and disease. Over the past five years, researchers are reporting with increasing frequency that Duffy-negative individuals are infected with P. vivax. This raises new questions as to how P. vivax infects the RBC when the Duffy blood group antigen is not available. Here we show that the parasite's Duffy binding protein gene has been duplicated in multiple P. vivax strains, especially at high prevalence in Madagascar. The specificity and prevalence of this polymorphism suggest that the parasite genome has responded to the barrier of Duffy negativity through the duplication of the PvDBP gene. Our results indicate that the PvDBP duplication is a recent event and provide novel research avenues to understand alternative pathways for P. vivax RBC invasion.
Collapse
Affiliation(s)
- Didier Menard
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
- * E-mail: (DM); (OMP); (DS); (PAZ)
| | - Ernest R. Chan
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio, United States of America
| | - Christophe Benedet
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Arsène Ratsimbasoa
- Direction de la lutte contre les maladies infectieuses, Ministère de la santé, du planning familial et de la protection sociale du Madagascar, Antananarivo, Madagascar
| | - Saorin Kim
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Pheaktra Chim
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Catherine Do
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Benoit Witkowski
- Unité d'Epidémiologie Moléculaire du Paludisme, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Remy Durand
- Laboratoire de Parasitologie-Mycologie, Hôpital Avicenne, AP-HP, Bobigny, France
| | - Marc Thellier
- National Center for Malaria Research, AP-HP, CHU Pitie Salpêtrière, Paris, France
| | - Carlo Severini
- Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità (ISS), Rome, Italy
| | - Eric Legrand
- Laboratoire de parasitologie, National Reference Centre of Malaria Resistance in French Guiana and West Indies, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Lise Musset
- Laboratoire de parasitologie, National Reference Centre of Malaria Resistance in French Guiana and West Indies, Institut Pasteur de la Guyane, Cayenne, French Guiana
| | - Bakri Y. M. Nour
- Blue Nile National Institute for Communicable Diseases, University of Gezira, Wad Medani, Sudan
| | - Odile Mercereau-Puijalon
- Unité d'lmmunologie Moléculaire des Parasites, Institut Pasteur, Paris, France
- * E-mail: (DM); (OMP); (DS); (PAZ)
| | - David Serre
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio, United States of America
- * E-mail: (DM); (OMP); (DS); (PAZ)
| | - Peter A. Zimmerman
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio, United States of America
- * E-mail: (DM); (OMP); (DS); (PAZ)
| |
Collapse
|
48
|
Do C, Bertrand C, Palasse J, Delisle MB, Cohen-Jonathan-Moyal E, Seva C. Activation of pro-oncogenic pathways in colorectal hyperplastic polyps. BMC Cancer 2013; 13:531. [PMID: 24209454 PMCID: PMC3829387 DOI: 10.1186/1471-2407-13-531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 11/05/2013] [Indexed: 12/25/2022] Open
Abstract
Background In contrast to sessile serrated adenomas and traditional serrated adenomas which are associated with a significant cancer risk, the role of hyperplastic polyps (HP) in colorectal carcinogenesis as well as the molecular mechanisms underlying their development remain controversial and still need to be clarified. Several reports suggest that a subset of HP may represent precursor lesions of some colorectal cancers. However, biomarkers are needed to identify the subset of HP that may have a malignant potential. The hormone precursor, progastrin (PG) has been involved in colon carcinogenesis and is known to activate pro-oncogenic pathways such as the ERK or the STAT3 pathway. We therefore analyzed PG expression and the activation of these signaling factors in HP. Methods We retrospectively analyzed PG expression as well as the phosphorylation of ERK and STAT3 by immunohistochemistry in HP from 48 patients. Results Mean percentages of epithelial cells positive for PG or phospho-ERK were respectively, 31% and 33% in HP and were significantly higher in these lesions compared to normal colon (3%, p = 0.0021 and 7%, p = 0.0008, respectively). We found a significant correlation between PG and phospho-ERK expression in HP with ERK activation significantly stronger in lesions with high progastrin expression (p = 0.015). In contrast, STAT3 was not significantly activated in HP compared to normal colon and we did not observe a significant correlation with PG expression. Conclusions HP overexpressing PG that have the highest activation of the ERK pathway might reflect less latent lesions that might have a malignant potential.
Collapse
Affiliation(s)
| | | | | | | | | | - Catherine Seva
- INSERM UMR,1037-Cancer Research Center of Toulouse (CRCT), Université Paul Sabatier, 31052 Toulouse cedex III, Toulouse, France.
| |
Collapse
|
49
|
Do C, Waples RS, Peel D, Macbeth GM, Tillett BJ, Ovenden JR. NeEstimatorv2: re-implementation of software for the estimation of contemporary effective population size (Ne) from genetic data. Mol Ecol Resour 2013; 14:209-14. [DOI: 10.1111/1755-0998.12157] [Citation(s) in RCA: 1229] [Impact Index Per Article: 111.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Revised: 07/25/2013] [Accepted: 07/25/2013] [Indexed: 12/01/2022]
Affiliation(s)
- C. Do
- Conservation Biology Division; Northwest Fisheries Science Center; 2725 Montlake Blvd East, Seattle WA 98112 USA
| | - R. S. Waples
- Northwest Fisheries Science Centre; NOAA Fisheries; 2725 Montlake Blvd East, Seattle WA 98112 USA
| | - D. Peel
- CSIRO Computational Informatics; Castray Esplanade Hobart Tas. 7004 Australia
| | - G. M. Macbeth
- Queensland Department of Agriculture, Fisheries and Forestry; 80 Ann St.; Brisbane Qld 4000 Australia
| | - B. J. Tillett
- Australian Institute of Marine Science; UWA Oceans Institute; 35 Stirling Highway Crawley WA 6009 Australia
| | - J. R. Ovenden
- Molecular Fisheries Laboratory; School of Biomedical Sciences; University of Queensland; Otto Hirschfeld Building (81), St Lucia Qld 4072 Australia
| |
Collapse
|
50
|
Narayan G, Xie D, Freddy AJ, Ishdorj G, Do C, Satwani P, Liyanage H, Clark L, Kisselev S, Nandula SV, Scotto L, Alobeid B, Savage D, Tycko B, O'Connor OA, Bhagat G, Murty VV. PCDH10 promoter hypermethylation is frequent in most histologic subtypes of mature lymphoid malignancies and occurs early in lymphomagenesis. Genes Chromosomes Cancer 2013; 52:1030-41. [PMID: 23929756 DOI: 10.1002/gcc.22098] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 07/07/2013] [Indexed: 12/12/2022] Open
Abstract
PCDH10 is epigenetically inactivated in multiple tumor types; however, studies in mature lymphoid malignancies are limited. Here, we have investigated the presence of promoter hypermethylation of the PCDH10 gene in a large cohort of well-characterized subsets of lymphomas. PCDH10 promoter hypermethylation was identified by methylation-specific PCR in 57 to 100% of both primary B- and T-cell lymphoma specimens and cell lines. These findings were further validated by Sequenom Mass-array analysis. Promoter hypermethylation was also identified in 28.6% cases of reactive follicular hyperplasia, more commonly occurring in states of immune deregulation and associated with rare presence of clonal karyotypic aberrations, suggesting that PCDH10 methylation occurs early in lymphomagenesis. PCDH10 expression was down regulated via promoter hypermethylation in T- and B-cell lymphoma cell lines. The transcriptional down-regulation resulting from PCDH10 methylation could be restored by pharmacologic inhibition of DNA methyltransferases in cell lines. Both T- and B-cell lymphoma cell lines harboring methylation-mediated inactivation of PCDH10 were resistant to doxorubicin treatment, suggesting that hypermethylation of this gene might contribute to chemotherapy response.
Collapse
Affiliation(s)
- Gopeshwar Narayan
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York Presbyterian Hospital, New York, NY
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|