1
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Houlston R, Culliford R, Lawrence S, Mills C, Tippu Z, Chubb D, Cornish A, Browining L, Kinnersley B, Bentham R, Sud A, Pallikonda H, Frangou A, Gruber A, Litchfield K, Wedge D, Larkin J, Turajlic S. Whole genome sequencing refines stratification and therapy of patients with clear cell renal cell carcinoma. Res Sq 2023:rs.3.rs-3675752. [PMID: 38106039 PMCID: PMC10723546 DOI: 10.21203/rs.3.rs-3675752/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: 12/19/2023]
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most common form of kidney cancer, but a comprehensive description of its genomic landscape is lacking. We report the whole genome sequencing of 778 ccRCC patients enrolled in the 100,000 Genomes Project, providing the most detailed somatic mutational landscape to date. We identify new driver genes, which as well as emphasising the major role of epigenetic regulation in ccRCC highlight additional biological pathways extending opportunities for drug repurposing. Genomic characterisation identified patients with divergent clinical outcome; higher number of structural copy number alterations associated with poorer prognosis, whereas VHL mutations were independently associated with a better prognosis. The twin observations that higher T-cell infiltration is associated with better outcome and that genetically predicted immune evasion is not common supports the rationale for immunotherapy. These findings should inform personalised surveillance and treatment strategies for ccRCC patients.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Amit Sud
- The Institute of Cancer Research
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2
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Carroll TM, Chadwick JA, Owen RP, White MJ, Kaplinsky J, Peneva I, Frangou A, Xie PF, Chang J, Roth A, Amess B, James SA, Rei M, Fuchs HS, McCann KJ, Omiyale AO, Jacobs BA, Lord SR, Norris-Bulpitt S, Dobbie ST, Griffiths L, Ramirez KA, Ricciardi T, Macri MJ, Ryan A, Venhaus RR, Van den Eynde BJ, Karydis I, Schuster-Böckler B, Middleton MR, Lu X. Tumor monocyte content predicts immunochemotherapy outcomes in esophageal adenocarcinoma. Cancer Cell 2023; 41:1222-1241.e7. [PMID: 37433281 DOI: 10.1016/j.ccell.2023.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 04/07/2023] [Accepted: 06/14/2023] [Indexed: 07/13/2023]
Abstract
For inoperable esophageal adenocarcinoma (EAC), identifying patients likely to benefit from recently approved immunochemotherapy (ICI+CTX) treatments remains a key challenge. We address this using a uniquely designed window-of-opportunity trial (LUD2015-005), in which 35 inoperable EAC patients received first-line immune checkpoint inhibitors for four weeks (ICI-4W), followed by ICI+CTX. Comprehensive biomarker profiling, including generation of a 65,000-cell single-cell RNA-sequencing atlas of esophageal cancer, as well as multi-timepoint transcriptomic profiling of EAC during ICI-4W, reveals a novel T cell inflammation signature (INCITE) whose upregulation correlates with ICI-induced tumor shrinkage. Deconvolution of pre-treatment gastro-esophageal cancer transcriptomes using our single-cell atlas identifies high tumor monocyte content (TMC) as an unexpected ICI+CTX-specific predictor of greater overall survival (OS) in LUD2015-005 patients and of ICI response in prevalent gastric cancer subtypes from independent cohorts. Tumor mutational burden is an additional independent and additive predictor of LUD2015-005 OS. TMC can improve patient selection for emerging ICI+CTX therapies in gastro-esophageal cancer.
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Affiliation(s)
- Thomas M Carroll
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Joseph A Chadwick
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Richard P Owen
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Michael J White
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Joseph Kaplinsky
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Iliana Peneva
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK
| | - Anna Frangou
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK; Big Data Institute, University of Oxford, Oxford, UK
| | - Phil F Xie
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Jaeho Chang
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Andrew Roth
- Department of Pathology and Molecular Medicine, University of British Columbia, Vancouver, Canada; Department of Computer Science, University of British Columbia, Vancouver, Canada; Department of Molecular Oncology, BC Cancer, Vancouver, Canada
| | - Bob Amess
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Sabrina A James
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Margarida Rei
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Hannah S Fuchs
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | - Katy J McCann
- Cancer Research UK Southampton Experimental Cancer Medicine Centre, Cancer Sciences Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Ayo O Omiyale
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK
| | | | - Simon R Lord
- Department of Oncology, University of Oxford, Oxford, UK
| | - Stewart Norris-Bulpitt
- Early Phase Clinical Trials Unit, Cancer & Haematology Centre, Churchill Hospital, Oxford, UK
| | - Sam T Dobbie
- Oncology Clinical Trials Office (OCTO), Department of Oncology, University of Oxford, Oxford, UK
| | - Lucinda Griffiths
- Oncology Clinical Trials Office (OCTO), Department of Oncology, University of Oxford, Oxford, UK
| | | | | | | | | | | | - Benoit J Van den Eynde
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK; Ludwig Institute for Cancer Research, Brussels, Belgium; de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ioannis Karydis
- Cancer Sciences Unit, University of Southampton and Cancer Care Group, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Mark R Middleton
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK; Department of Oncology, University of Oxford, Oxford, UK; Early Phase Clinical Trials Unit, Cancer & Haematology Centre, Churchill Hospital, Oxford, UK.
| | - Xin Lu
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK.
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3
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Katz-Summercorn A, Peneva I, Frangou A, Jammula S, O'Donovan M, Tripathi M, Malhotra S, di Pietro M, Devonshire G, Redmond A, Wedge D, Fitzgerald R. OGC P04 Spatial sampling of Barrett's oesophagus reveals that tumour heterogeneity is not a useful predictor of progression to cancer. Br J Surg 2022. [DOI: 10.1093/bjs/znac404.167] [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: 12/12/2022]
Abstract
Abstract
Background
Intra-tumour heterogeneity has been well-described in oesophageal adenocarcinoma and Barrett's oesophagus (BE) segments also consist of multiple clones (groups of cells which share mutations). In BE there is some suggestion that the number of individual genetic clones within the segment and the diversity of the segment can be predictors of progression to cancer. However, this was with pre- whole genome sequencing (WGS) methods. In this study we consider the detailed spatial maps of ten patients with different disease trajectories, using WGS, to determine the heterogeneity and correlate it with their progression.
Methods
We performed WGS (50x) on 35 high-quality, frozen, endoscopic biopsies taken spatially from ten cases (8 males, 2 females, median age 75 (range 31–83). This included 4 long-term non-dysplastic (ND) patients with long BE segments and 6 patients with dysplasia. We used the copy number and purity information (from Battenberg) and the somatic mutation clustering information (from DPClust) to infer the clonal and subclonal architecture of individual biopsies and looked at the spatial relationship between biopsies within the segment.
Results
In both ND and dysplastic BE we saw cells with unrelated patterns of mutations, or clones, implying completely separate origins for different parts of the segments. This suggests independent or parallel evolution. There was a higher burden of shared (truncal) mutations in the dysplastic biopsies (p=0.049), indicating a more recent clonal sweep with some clones being outcompeted. Dysplastic samples had more subclonal copy number aberrations and more clonal driver mutations. In addition, most of the driver gene alterations in the dysplastic trees occurred early, whereas CDKN2A, the p16 locus, was the only truncal mutation found on the ND clone trees. We did not find the number of clones or the diversity of the segment to differ between the two groups.
Conclusions
Each individual patient showed complex, distinct genomic features and evolutionary trajectories. Some cases arose from a single ancestral clone, while others had few shared mutational variants suggesting multiple clones. Importantly, in this sample of cases we did not see any trend that the clonal diversity or number of clones correlated with progression to cancer. This is different to previous studies and highlights the importance of multiple sampling to determine the propensity for cancer progression even if the samples look similar histologically.
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Affiliation(s)
| | - Iliana Peneva
- Wellcome Centre for Human Genetics, University of Oxford , Oxford , United Kingdom
| | - Anna Frangou
- Wellcome Centre for Human Genetics, University of Oxford , Oxford , United Kingdom
| | - Sriganesh Jammula
- Cancer Research UK Cambridge Institute, University of Cambridge , Cambridge , United Kingdom
| | - Maria O'Donovan
- Early Cancer Institute, University of Cambridge , Cambridge , United Kingdom
| | - Monika Tripathi
- Early Cancer Institute, University of Cambridge , Cambridge , United Kingdom
| | - Shalini Malhotra
- Early Cancer Institute, University of Cambridge , Cambridge , United Kingdom
| | | | - Ginny Devonshire
- Cancer Research UK Cambridge Institute, University of Cambridge , Cambridge , United Kingdom
| | - Aisling Redmond
- Early Cancer Institute, University of Cambridge , Cambridge , United Kingdom
| | - David Wedge
- Manchester Cancer Research Centre, University of Manchester , Manchester , United Kingdom
| | - Rebecca Fitzgerald
- Early Cancer Institute, University of Cambridge , Cambridge , United Kingdom
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4
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Carroll TM, Chadwick JA, Owen RP, White MJ, Kaplinsky J, Peneva I, Frangou A, Chang J, Xie PF, Roth A, Amess B, Lou H, McCann KJ, Berridge G, Fischer R, Phetsouphanh C, Omiyale AO, Jacobs BA, Ahern D, Lord SR, Norris-Bulpitt S, Dobbie ST, Griffiths L, Ramirez KA, Ricciardi T, Macri MJ, Ryan A, Venhaus RR, Van den Eynde BJ, Karydis I, Kessler BM, Schuster-Böckler B, Middleton MR, Lu X. Abstract 1247: Comprehensive molecular profiling to predict first-line immunochemotherapy outcomes in inoperable esophageal adenocarcinoma. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-1247] [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]
Abstract
Abstract
For patients with inoperable esophageal adenocarcinoma (EAC), prognosis on conventional chemotherapy (CTX) remains poor. In 2021, the FDA approved two αPD-1 immune checkpoint inhibitors (ICI) for addition to fluoropyrimidine/platinum-containing CTX in this first-line setting. As ICI+CTX enters the clinic, understanding ICI responses and predicting which patients will benefit from ICI addition are key challenges. To address these challenges, we assessed clinical and molecular profiles from the experimental LUD2015-005 trial (NCT02735239, EudraCT 2015-005298-19). Treatment consisted of an initial four-week ICI-only window with durvalumab (αPD-L1) with or without a single dose of tremelimumab (αCTLA-4), followed by 6 cycles of ICI+CTX (CapOx). 38 inoperable patients received treatment (35 EAC; 3 ESCC); median overall survival (OS) and progression-free survival (PFS) were 13.4 and 9.3 months, respectively. All patients reported at least one treatment emergent adverse event (TEAE), with 29 (76.3%) reporting grade 3 or higher TEAEs. EAC patients with available samples (n = 33) were taken forward for biomarker analysis, using tumor and adjacent normal biopsies collected at pre-treatment (PreTx), after four weeks of ICI-only (ICI-4W), and at the end of ICI+CTX (PostTx).
Transcriptomic comparison of paired PreTx and ICI-4W EAC biopsies (n = 28) revealed ICI-induced upregulation of a novel T-cell inflammation signature (termed INCITE). Stronger INCITE upregulation correlated with greater tumor shrinkage during the ICI-only window, and tumors with minimal INCITE upregulation showed markers of ICI resistance, including Innate PD-1 Resistance (IPRES). Despite correlation with ICI-only responses, INCITE changes were not associated with overall ICI+CTX outcomes.
To find predictive biomarkers of ICI+CTX outcomes, we conducted comprehensive genomic and transcriptomic profiling of PreTx EAC biopsies (n = 33). First, we generated a novel 65,000 cell scRNA-seq dataset and designed a deconvolution workflow to resolve tumor cell composition. Unexpectedly, monocyte composition was strongly linked with greater overall survival (OS) (HR: 0.40 [0.23-0.69]; p = 0.001; FDR = 0.047). Coding tumor mutational burden (TMB) was also associated with improved OS (HR: 0.50 [0.28-0.89]; p = 0.019). Multivariate modelling suggested monocyte composition and TMB were independent and complementary predictors of outcomes. Neither factor was associated with outcomes in a TCGA cohort of EAC patients not treated with ICI, suggesting these biomarkers may be specific to ICI or ICI+CTX.
Our findings suggest monocyte composition and TMB may identify EAC patients likely to benefit from ICI+CTX. INCITE upregulation may also serve as a useful monitor of ICI efficacy. These timely findings further our understanding of ICI response and resistance and may help inform patient selection for ICI+CTX.
Citation Format: Thomas M. Carroll, Joseph A. Chadwick, Richard P. Owen, Michael J. White, Joseph Kaplinsky, Iliana Peneva, Anna Frangou, Jaeho Chang, Phil F. Xie, Andrew Roth, Bob Amess, Hantao Lou, Katy J. McCann, Georgina Berridge, Roman Fischer, Chansavath Phetsouphanh, Ayo O. Omiyale, Brittany-Amber Jacobs, David Ahern, Simon R. Lord, Stewart Norris-Bulpitt, Sam T. Dobbie, Lucinda Griffiths, Kristen Aufiero Ramirez, Toni Ricciardi, Mary J. Macri, Aileen Ryan, Ralph R. Venhaus, Benoit J. Van den Eynde, Ioannis Karydis, Benedikt M. Kessler, Benjamin Schuster-Böckler, Mark R. Middleton, Xin Lu. Comprehensive molecular profiling to predict first-line immunochemotherapy outcomes in inoperable esophageal adenocarcinoma [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 1247.
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Affiliation(s)
- Thomas M. Carroll
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Joseph A. Chadwick
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Richard P. Owen
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Michael J. White
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Joseph Kaplinsky
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Iliana Peneva
- 2Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Anna Frangou
- 3Big Data Institute, University of Oxford, Oxford, United Kingdom
| | - Jaeho Chang
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Phil F. Xie
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Andrew Roth
- 4Department of Molecular Oncology, BC Cancer, Vancouver, British Columbia, Canada
| | - Bob Amess
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Hantao Lou
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Katy J. McCann
- 5Cancer Research UK Southampton Experimental Cancer Medicine Centre, Cancer Sciences Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Georgina Berridge
- 6Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Roman Fischer
- 6Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | | | - Ayo O. Omiyale
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
| | | | - David Ahern
- 7Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Simon R. Lord
- 8Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Stewart Norris-Bulpitt
- 9Early Phase Clinical Trials Unit, Cancer & Haematology Centre, Churchill Hospital, Oxford, United Kingdom
| | - Sam T. Dobbie
- 10Oncology Clinical Trials Office (OCTO), Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Lucinda Griffiths
- 10Oncology Clinical Trials Office (OCTO), Department of Oncology, University of Oxford, Oxford, United Kingdom
| | | | | | | | | | | | | | - Ioannis Karydis
- 12Cancer Sciences Unit, University of Southampton and Cancer Care Group, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Benedikt M. Kessler
- 6Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | | | - Mark R. Middleton
- 8Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Xin Lu
- 1Ludwig Institute of Cancer Research, University of Oxford, Oxford, United Kingdom
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5
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Palles C, West HD, Chew E, Galavotti S, Flensburg C, Grolleman JE, Jansen EAM, Curley H, Chegwidden L, Arbe-Barnes EH, Lander N, Truscott R, Pagan J, Bajel A, Sherwood K, Martin L, Thomas H, Georgiou D, Fostira F, Goldberg Y, Adams DJ, van der Biezen SAM, Christie M, Clendenning M, Thomas LE, Deltas C, Dimovski AJ, Dymerska D, Lubinski J, Mahmood K, van der Post RS, Sanders M, Weitz J, Taylor JC, Turnbull C, Vreede L, van Wezel T, Whalley C, Arnedo-Pac C, Caravagna G, Cross W, Chubb D, Frangou A, Gruber AJ, Kinnersley B, Noyvert B, Church D, Graham T, Houlston R, Lopez-Bigas N, Sottoriva A, Wedge D, Jenkins MA, Kuiper RP, Roberts AW, Cheadle JP, Ligtenberg MJL, Hoogerbrugge N, Koelzer VH, Rivas AD, Winship IM, Ponte CR, Buchanan DD, Power DG, Green A, Tomlinson IPM, Sampson JR, Majewski IJ, de Voer RM. Germline MBD4 deficiency causes a multi-tumor predisposition syndrome. Am J Hum Genet 2022; 109:953-960. [PMID: 35460607 PMCID: PMC9118112 DOI: 10.1016/j.ajhg.2022.03.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/30/2022] [Indexed: 12/16/2022] Open
Abstract
We report an autosomal recessive, multi-organ tumor predisposition syndrome, caused by bi-allelic loss-of-function germline variants in the base excision repair (BER) gene MBD4. We identified five individuals with bi-allelic MBD4 variants within four families and these individuals had a personal and/or family history of adenomatous colorectal polyposis, acute myeloid leukemia, and uveal melanoma. MBD4 encodes a glycosylase involved in repair of G:T mismatches resulting from deamination of 5'-methylcytosine. The colorectal adenomas from MBD4-deficient individuals showed a mutator phenotype attributable to mutational signature SBS1, consistent with the function of MBD4. MBD4-deficient polyps harbored somatic mutations in similar driver genes to sporadic colorectal tumors, although AMER1 mutations were more common and KRAS mutations less frequent. Our findings expand the role of BER deficiencies in tumor predisposition. Inclusion of MBD4 in genetic testing for polyposis and multi-tumor phenotypes is warranted to improve disease management.
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Affiliation(s)
- Claire Palles
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Hannah D West
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
| | - Edward Chew
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Sara Galavotti
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | | | - Judith E Grolleman
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Erik A M Jansen
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Helen Curley
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Laura Chegwidden
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Edward H Arbe-Barnes
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Nicola Lander
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
| | - Rebekah Truscott
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
| | - Judith Pagan
- Molecular Genetics Laboratory, South East Scotland Genetic Service, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Ashish Bajel
- Peter MacCallum Cancer Center and Royal Melbourne Hospital, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
| | - Kitty Sherwood
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Crewe Road, Edinburgh EH4 2XR, UK
| | - Lynn Martin
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Huw Thomas
- St Mark's Hospital, Imperial College London, London, UK
| | - Demetra Georgiou
- Genomic Medicine, Imperial College Healthcare Trust and North West Thames Regional Genetics Service, Northwick Park, Harrow, UK
| | | | - Yael Goldberg
- Raphael Recanati Genetic Institute, Rabin Medical Center - Beilinson Hospital, Petach Tikva, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - David J Adams
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Simone A M van der Biezen
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Michael Christie
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC, Australia
| | - Mark Clendenning
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC, Australia; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
| | - Laura E Thomas
- Institute of Life Sciences, Swansea University, Swansea SA28PP, UK
| | - Constantinos Deltas
- Center of Excellence in Biobanking and Biomedical Research and Molecular Medicine Research Center, University of Cyprus Medical School, Nicosia, Cyprus
| | - Aleksandar J Dimovski
- Center for Biomolecular Pharmaceutical Analyzes, UKIM Faculty of Pharmacy, 1000 Skopje, Republic of Macedonia
| | - Dagmara Dymerska
- Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Jan Lubinski
- Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Khalid Mahmood
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC, Australia; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia
| | - Rachel S van der Post
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Mathijs Sanders
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jürgen Weitz
- Department of Surgical Research, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Jenny C Taylor
- Oxford NIHR Biomedical Research Centre, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Clare Turnbull
- Institute of Cancer Research, Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Lilian Vreede
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Tom van Wezel
- Department of Pathology, Leiden University Medical Center, 2300 Leiden, the Netherlands
| | - Celina Whalley
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Claudia Arnedo-Pac
- Institute for Research in Biomedicine, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Giulio Caravagna
- Institute of Cancer Research, Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - William Cross
- Cancer Institute, University College London, 72 Huntley Street, London WC1E 6BT, UK
| | - Daniel Chubb
- Institute of Cancer Research, Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Anna Frangou
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Andreas J Gruber
- Manchester Interdisciplinary Biocentre, University of Manchester, Manchester M1 7DN, UK
| | - Ben Kinnersley
- Institute of Cancer Research, Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Boris Noyvert
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - David Church
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Trevor Graham
- Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Richard Houlston
- Institute of Cancer Research, Cotswold Road, Sutton, Surrey SM2 5NG, UK
| | - Nuria Lopez-Bigas
- Institute for Research in Biomedicine, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Andrea Sottoriva
- Cancer Institute, University College London, 72 Huntley Street, London WC1E 6BT, UK
| | - David Wedge
- Manchester Interdisciplinary Biocentre, University of Manchester, Manchester M1 7DN, UK
| | - Mark A Jenkins
- University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC, Australia
| | - Roland P Kuiper
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands; Princess Máxima Center for Pediatric Oncology, 3584 Utrecht, the Netherlands
| | - Andrew W Roberts
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Molecular Genetics Laboratory, South East Scotland Genetic Service, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia; University of Melbourne, Department of Medical Biology, 1G Royal Parade, Parkville, VIC 3052, Australia
| | - Jeremy P Cheadle
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
| | - Marjolijn J L Ligtenberg
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands; Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Nicoline Hoogerbrugge
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Viktor H Koelzer
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zürich, Switzerland
| | - Andres Dacal Rivas
- Servicio de Digestivo, Hospital Lucus Augusti, Instituto de Investigación Sanitaria de Santiago, Lugo, Galicia, Spain
| | - Ingrid M Winship
- Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Melbourne, VIC, Australia; Department of Medicine, Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Clara Ruiz Ponte
- Fundación Pública Galega de Medicina Xenómica SERGAS, Grupo de Medicina Xenómica-USC, Instituto de Investigación Sanitaria de Santiago, Centro de Investigación Biomédica en Red de Enfermedades Raras, Santiago de Compostela, Galicia, Spain
| | - Daniel D Buchanan
- Colorectal Oncogenomics Group, Department of Clinical Pathology, Melbourne Medical School, The University of Melbourne, Parkville, VIC, Australia; University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Parkville, VIC, Australia; Genomic Medicine and Family Cancer Clinic, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Derek G Power
- Department of Medical Oncology, Cork University Hospital, Cork, Ireland
| | - Andrew Green
- Department of Clinical Genetics, Children's Health Ireland, Dublin, Ireland; School of Medicine University College, Dublin, Ireland
| | - Ian P M Tomlinson
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Crewe Road, Edinburgh EH4 2XR, UK.
| | - Julian R Sampson
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK.
| | - Ian J Majewski
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC, Australia
| | - Richarda M de Voer
- Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
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6
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Katz-Summercorn AC, Jammula S, Frangou A, Peneva I, O'Donovan M, Tripathi M, Malhotra S, di Pietro M, Abbas S, Devonshire G, Januszewicz W, Blasko A, Nowicki-Osuch K, MacRae S, Northrop A, Redmond AM, Wedge DC, Fitzgerald RC. Multi-omic cross-sectional cohort study of pre-malignant Barrett's esophagus reveals early structural variation and retrotransposon activity. Nat Commun 2022; 13:1407. [PMID: 35301290 PMCID: PMC8931005 DOI: 10.1038/s41467-022-28237-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [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] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 01/14/2022] [Indexed: 12/11/2022] Open
Abstract
Barrett's esophagus is a pre-malignant lesion that can progress to esophageal adenocarcinoma. We perform a multi-omic analysis of pre-cancer samples from 146 patients with a range of outcomes, comprising 642 person years of follow-up. Whole genome sequencing reveals complex structural variants and LINE-1 retrotransposons, as well as known copy number changes, occurring even prior to dysplasia. The structural variant burden captures the most variance across the cohort and genomic profiles do not always match consensus clinical pathology dysplasia grades. Increasing structural variant burden is associated with: high levels of chromothripsis and breakage-fusion-bridge events; increased expression of genes related to cell cycle checkpoint, DNA repair and chromosomal instability; and epigenetic silencing of Wnt signalling and cell cycle genes. Timing analysis reveals molecular events triggering genomic instability with more clonal expansion in dysplastic samples. Overall genomic complexity occurs early in the Barrett's natural history and may inform the potential for cancer beyond the clinically discernible phenotype.
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Affiliation(s)
- A C Katz-Summercorn
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S Jammula
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - A Frangou
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK
| | - I Peneva
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK
| | - M O'Donovan
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - M Tripathi
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - S Malhotra
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK
| | - M di Pietro
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S Abbas
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - G Devonshire
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - W Januszewicz
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - A Blasko
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - K Nowicki-Osuch
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - S MacRae
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - A Northrop
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - A M Redmond
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - D C Wedge
- Manchester Cancer Research Centre, University of Manchester, Wilmslow Road, Manchester, M20 4GJ, UK
| | - R C Fitzgerald
- Medical Research Council Cancer Unit, Hutchison/Medical Research Council Research Centre, University of Cambridge, Cambridge, CB2 0XZ, UK.
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7
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Katz-Summercorn A, Jammula S, Frangou A, Peneva I, O'Donovan M, Tripathi M, Malhotra S, Pietro MD, Abbas S, Devonshire G, Januszewicz W, Blasko A, Nowicki-Osuch K, MacRae S, Northrop A, Redmond A, Wedge D, Fitzgerald R. P-OGC44 Multi-omic cohort study of Barrett’s oesophagus reveals structural variation and retrotransposon activity to occur early in cancer evolution. Br J Surg 2021. [DOI: 10.1093/bjs/znab430.172] [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: 11/14/2022]
Abstract
Abstract
Background
Barrett’s oesophagus (BE) is the main risk factor for the development of oesophageal adenocarcinoma (OAC), yet few patients ever go on to progress to cancer. The acquisition of events during the metaplasia-dysplasia-cancer sequence is poorly characterised. We present a large, unbiased, multi-omics analysis of a cross-sectional cohort of pre-cancer samples, with the aim of providing a comprehensive insight into the diversity and molecular changes driving the disease to cancer.
Methods
We generated and integrated the genomic (50x), transcriptomic and epigenomic (850K EPIC array) landscapes of snap-frozen endoscopic biopsies from 146 patients with a range of outcomes (27 long-standing non-dysplastic; 12 prior to progression to dysplasia; 14 low-grade; 25 high-grade; 21 intramucosal carcinoma; 47 cases of BE taken adjacent to OAC) and 642 person years of follow-up. All biopsies were reviewed independently by 3 pathologists and had associated annotation with detailed clinical information.
Results
The total number of structural variants (SV) captured the most variance between samples. Complex SVs and LINE-1 retrotransposon activity were observed even before dysplasia had developed and increased with progression. Increasing SV burden was associated with chromothripsis (12%, 18/146) and breakage-fusion bridges (BFBs; 8%, 13/146). In more than 50% of these, the BFBs were in chromosome 17, harbouring the oncogenes ERBB2 and CDK12, for which expression was significantly higher. With progression there was increased expression of genes related to cell-cycle checkpoint, DNA repair and chromosomal instability, and the epigenetic silencing of genes in WNT-signalling and cell-cycle pathways.
Conclusions
Genomic complexity occurs very early in the natural history of BE and increasing genomic instability appears to tip the balance towards cancer. This may inform the potential for progression to cancer beyond the clinically discernible phenotype. Efforts to better understand the triggers for chromosomal breakages and rearrangements that underly progression will aid clinical prediction and prevention strategies.
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Affiliation(s)
| | - Sriganesh Jammula
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Anna Frangou
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Iliana Peneva
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Maria O'Donovan
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Monika Tripathi
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Shalini Malhotra
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | | | - Shujath Abbas
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Ginny Devonshire
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | | | - Adrienn Blasko
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Karol Nowicki-Osuch
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Shona MacRae
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Alex Northrop
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Aisling Redmond
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - David Wedge
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Rebecca Fitzgerald
- Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
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8
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Dunbar RIM, Frangou A, Grainger F, Pearce E. Laughter influences social bonding but not prosocial generosity to friends and strangers. PLoS One 2021; 16:e0256229. [PMID: 34388212 PMCID: PMC8362988 DOI: 10.1371/journal.pone.0256229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 08/03/2021] [Indexed: 12/30/2022] Open
Abstract
Humans deploy a number of specific behaviours for forming social bonds, one of which is laughter. However, two questions have not yet been investigated with respect to laughter: (1) Does laughter increase the sense of bonding to those with whom we laugh? and (2) Does laughter facilitate prosocial generosity? Using changes in pain threshold as a proxy for endorphin upregulation in the brain and a standard economic game (the Dictator Game) as an assay of prosociality, we show that laughter does trigger the endorphin system and, through that, seems to enhance social bonding, but it does not reliably influence donations to others. This suggests that social bonding and prosociality may operate via different mechanisms, or on different time scales, and relate to different functional objectives.
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Affiliation(s)
- R. I. M. Dunbar
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
| | - Anna Frangou
- Big Data Institute, University of Oxford, Oxford, United Kingdom
| | - Felix Grainger
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
| | - Eiluned Pearce
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
- Department of Psychiatry, University College London, London, United Kingdom
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9
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Cornish AJ, Chubb D, Frangou A, Hoang PH, Kaiser M, Wedge DC, Houlston RS. Reference bias in the Illumina Isaac aligner. Bioinformatics 2021; 36:4671-4672. [PMID: 32437525 PMCID: PMC7653636 DOI: 10.1093/bioinformatics/btaa514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/23/2020] [Accepted: 05/17/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Alex J Cornish
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SM2 5NG 2, UK
| | - Daniel Chubb
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SM2 5NG 2, UK
| | - Anna Frangou
- Nuffield Department of Medicine, Big Data Institute University of Oxford, OX3 7LF 3, UK.,Molecular Diagnostics Theme, Oxford NIHR Biomedical Research Centre, Oxford, OX3 7LF 3, UK
| | - Phuc H Hoang
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SM2 5NG 2, UK
| | - Martin Kaiser
- Division of Molecular Pathology, The Institute of Cancer Research, London SM2 5NG 5, UK
| | - David C Wedge
- Nuffield Department of Medicine, Big Data Institute University of Oxford, OX3 7LF 3, UK.,Molecular Diagnostics Theme, Oxford NIHR Biomedical Research Centre, Oxford, OX3 7LF 3, UK.,Manchester Cancer Research Centre, University of Manchester, M20 4GJ, UK
| | - Richard S Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SM2 5NG 2, UK
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10
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Paes W, Leonov G, Partridge T, Chikata T, Murakoshi H, Frangou A, Brackenridge S, Nicastri A, Smith AG, Learn GH, Li Y, Parker R, Oka S, Pellegrino P, Williams I, Haynes BF, McMichael AJ, Shaw GM, Hahn BH, Takiguchi M, Ternette N, Borrow P. Contribution of proteasome-catalyzed peptide cis-splicing to viral targeting by CD8 + T cells in HIV-1 infection. Proc Natl Acad Sci U S A 2019; 116:24748-24759. [PMID: 31748275 PMCID: PMC6900506 DOI: 10.1073/pnas.1911622116] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [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] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Peptides generated by proteasome-catalyzed splicing of noncontiguous amino acid sequences have been shown to constitute a source of nontemplated human leukocyte antigen class I (HLA-I) epitopes, but their role in pathogen-specific immunity remains unknown. CD8+ T cells are key mediators of HIV type 1 (HIV-1) control, and identification of novel epitopes to enhance targeting of infected cells is a priority for prophylactic and therapeutic strategies. To explore the contribution of proteasome-catalyzed peptide splicing (PCPS) to HIV-1 epitope generation, we developed a broadly applicable mass spectrometry-based discovery workflow that we employed to identify spliced HLA-I-bound peptides on HIV-infected cells. We demonstrate that HIV-1-derived spliced peptides comprise a relatively minor component of the HLA-I-bound viral immunopeptidome. Although spliced HIV-1 peptides may elicit CD8+ T cell responses relatively infrequently during infection, CD8+ T cells primed by partially overlapping contiguous epitopes in HIV-infected individuals were able to cross-recognize spliced viral peptides, suggesting a potential role for PCPS in restricting HIV-1 escape pathways. Vaccine-mediated priming of responses to spliced HIV-1 epitopes could thus provide a novel means of exploiting epitope targets typically underutilized during natural infection.
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Affiliation(s)
- Wayne Paes
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom;
| | - German Leonov
- York Cross-Disciplinary Centre for Systems Analysis, University of York, York YO10 5DD, United Kingdom
| | - Thomas Partridge
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Takayuki Chikata
- Centre for AIDS Research, Kumamoto University, Kumamoto 860-0811, Japan
| | - Hayato Murakoshi
- Centre for AIDS Research, Kumamoto University, Kumamoto 860-0811, Japan
| | - Anna Frangou
- Big Data Institute, University of Oxford, Oxford OX3 7LF, United Kingdom
| | - Simon Brackenridge
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - Annalisa Nicastri
- Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Andrew G Smith
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Gerald H Learn
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Yingying Li
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Robert Parker
- Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Shinichi Oka
- Centre for AIDS Research, Kumamoto University, Kumamoto 860-0811, Japan
- AIDS Clinical Centre, National Centre for Global Health and Medicine, Tokyo 162-8655, Japan
| | - Pierre Pellegrino
- Centre for Sexual Health and HIV Research, University College London, London WC1E 6JB, United Kingdom
| | - Ian Williams
- Centre for Sexual Health and HIV Research, University College London, London WC1E 6JB, United Kingdom
| | - Barton F Haynes
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710
| | - Andrew J McMichael
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom
| | - George M Shaw
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Beatrice H Hahn
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | | | - Nicola Ternette
- Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom;
| | - Persephone Borrow
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom;
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11
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Abstract
In small scale societies, lethal attacks on another individual usually invite revenge by the victim's family. We might expect those who perpetrate such attacks to do so only when their own support network (mainly family) is larger than that of the potential victim so as to minimise the risk of retaliation. Using data from Icelandic family sagas, we show that this prediction holds whether we consider biological kin or affinal kin (in-laws): on average, killers had twice as many relatives as their victims. These findings reinforce the importance of kin as a source of implicit protection even when they are not physically present. The results also support Hughes' (1988) claim that affines are biological kin because of the shared genetic interests they have in the offspring generation.
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Affiliation(s)
- Markel Palmstierna
- Institute of Evolutionary Anthropology, University of Oxford, 64 Banbury Rd, Oxford, OX3 6PN, UK
| | - Anna Frangou
- Department of Statistics, University of Oxford, Oxford, UK
| | - Anna Wallette
- Department of History, Lund University, Lund, Sweden
| | - Robin Dunbar
- Department of Experimental Psychology, University of Oxford, South Parks Rd, Oxford, OX1 3UD, UK
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12
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Dunbar RIM, Baron R, Frangou A, Pearce E, van Leeuwen EJC, Stow J, Partridge G, MacDonald I, Barra V, van Vugt M. Social laughter is correlated with an elevated pain threshold. Proc Biol Sci 2012; 279:1161-7. [PMID: 21920973 PMCID: PMC3267132 DOI: 10.1098/rspb.2011.1373] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Accepted: 08/26/2011] [Indexed: 11/12/2022] Open
Abstract
Although laughter forms an important part of human non-verbal communication, it has received rather less attention than it deserves in both the experimental and the observational literatures. Relaxed social (Duchenne) laughter is associated with feelings of wellbeing and heightened affect, a proximate explanation for which might be the release of endorphins. We tested this hypothesis in a series of six experimental studies in both the laboratory (watching videos) and naturalistic contexts (watching stage performances), using change in pain threshold as an assay for endorphin release. The results show that pain thresholds are significantly higher after laughter than in the control condition. This pain-tolerance effect is due to laughter itself and not simply due to a change in positive affect. We suggest that laughter, through an endorphin-mediated opiate effect, may play a crucial role in social bonding.
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Affiliation(s)
- R I M Dunbar
- British Academy Centenary Research Project, University of Oxford, Oxford, UK.
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