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Wong D, Luo P, Oldfield LE, Gong H, Brunga L, Rabinowicz R, Subasri V, Chan C, Downs T, Farncombe KM, Luu B, Norman M, Sobotka JA, Uju P, Eagles J, Pedersen S, Wellum J, Danesh A, Prokopec SD, Stutheit-Zhao EY, Znassi N, Heisler LE, Jovelin R, Lam B, Lujan Toro BE, Marsh K, Sundaravadanam Y, Torti D, Man C, Goldenberg A, Xu W, Veit-Haibach P, Doria AS, Malkin D, Kim RH, Pugh TJ. Early Cancer Detection in Li-Fraumeni Syndrome with Cell-Free DNA. Cancer Discov 2024; 14:104-119. [PMID: 37874259 PMCID: PMC10784744 DOI: 10.1158/2159-8290.cd-23-0456] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/18/2023] [Revised: 08/07/2023] [Accepted: 09/27/2023] [Indexed: 10/25/2023]
Abstract
People with Li-Fraumeni syndrome (LFS) harbor a germline pathogenic variant in the TP53 tumor suppressor gene, face a near 100% lifetime risk of cancer, and routinely undergo intensive surveillance protocols. Liquid biopsy has become an attractive tool for a range of clinical applications, including early cancer detection. Here, we provide a proof-of-principle for a multimodal liquid biopsy assay that integrates a targeted gene panel, shallow whole-genome, and cell-free methylated DNA immunoprecipitation sequencing for the early detection of cancer in a longitudinal cohort of 89 LFS patients. Multimodal analysis increased our detection rate in patients with an active cancer diagnosis over uni-modal analysis and was able to detect cancer-associated signal(s) in carriers prior to diagnosis with conventional screening (positive predictive value = 67.6%, negative predictive value = 96.5%). Although adoption of liquid biopsy into current surveillance will require further clinical validation, this study provides a framework for individuals with LFS. SIGNIFICANCE By utilizing an integrated cell-free DNA approach, liquid biopsy shows earlier detection of cancer in patients with LFS compared with current clinical surveillance methods such as imaging. Liquid biopsy provides improved accessibility and sensitivity, complementing current clinical surveillance methods to provide better care for these patients. See related commentary by Latham et al., p. 23. This article is featured in Selected Articles from This Issue, p. 5.
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Affiliation(s)
- Derek Wong
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Ping Luo
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Leslie E. Oldfield
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Haifan Gong
- The Hospital for Sick Children, Toronto, Canada
| | | | | | - Vallijah Subasri
- The Hospital for Sick Children, Toronto, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Canada
- Vector Institute, Toronto, Canada
| | - Clarissa Chan
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Tiana Downs
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | | | - Beatrice Luu
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Maia Norman
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Julia A. Sobotka
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Precious Uju
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Jenna Eagles
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Stephanie Pedersen
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Johanna Wellum
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - Arnavaz Danesh
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | | | | | - Nadia Znassi
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | | | | | - Bernard Lam
- Ontario Institute for Cancer Research, Toronto, Canada
| | | | - Kayla Marsh
- Ontario Institute for Cancer Research, Toronto, Canada
| | | | - Dax Torti
- Ontario Institute for Cancer Research, Toronto, Canada
| | - Carina Man
- The Hospital for Sick Children, Toronto, Canada
| | - Anna Goldenberg
- The Hospital for Sick Children, Toronto, Canada
- Vector Institute, Toronto, Canada
| | - Wei Xu
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Patrick Veit-Haibach
- Joint Department of Medical Imaging, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | | | - David Malkin
- The Hospital for Sick Children, Toronto, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Canada
- Department of Pediatrics, University of Toronto, Toronto, Canada
| | - Raymond H. Kim
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
- The Hospital for Sick Children, Toronto, Canada
- Ontario Institute for Cancer Research, Toronto, Canada
| | - Trevor J. Pugh
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Canada
- Ontario Institute for Cancer Research, Toronto, Canada
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Farncombe KM, Wong D, Norman ML, Oldfield LE, Sobotka JA, Basik M, Bombard Y, Carile V, Dawson L, Foulkes WD, Malkin D, Karsan A, Parkin P, Penney LS, Pollett A, Schrader KA, Pugh TJ, Kim RH. Current and new frontiers in hereditary cancer surveillance: Opportunities for liquid biopsy. Am J Hum Genet 2023; 110:1616-1627. [PMID: 37802042 PMCID: PMC10577078 DOI: 10.1016/j.ajhg.2023.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 10/08/2023] Open
Abstract
At least 5% of cancer diagnoses are attributed to a causal pathogenic or likely pathogenic germline genetic variant (hereditary cancer syndrome-HCS). These individuals are burdened with lifelong surveillance monitoring organs for a wide spectrum of cancers. This is associated with substantial uncertainty and anxiety in the time between screening tests and while the individuals are awaiting results. Cell-free DNA (cfDNA) sequencing has recently shown potential as a non-invasive strategy for monitoring cancer. There is an opportunity for high-yield cancer early detection in HCS. To assess clinical validity of cfDNA in individuals with HCS, representatives from eight genetics centers from across Canada founded the CHARM (cfDNA in Hereditary and High-Risk Malignancies) Consortium in 2017. In this perspective, we discuss operationalization of this consortium and early data emerging from the most common and well-characterized HCSs: hereditary breast and ovarian cancer, Lynch syndrome, Li-Fraumeni syndrome, and Neurofibromatosis type 1. We identify opportunities for the incorporation of cfDNA sequencing into surveillance protocols; these opportunities are backed by examples of earlier cancer detection efficacy in HCSs from the CHARM Consortium. We seek to establish a paradigm shift in early cancer surveillance in individuals with HCSs, away from highly centralized, regimented medical screening visits and toward more accessible, frequent, and proactive care for these high-risk individuals.
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Affiliation(s)
- Kirsten M Farncombe
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada; Ontario Institute for Cancer Research, Toronto, ON, Canada
| | - Derek Wong
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Maia L Norman
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Leslie E Oldfield
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Julia A Sobotka
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Mark Basik
- Department of Surgery, McGill University Medical School, Montreal, QC, Canada; Department of Oncology, McGill University Medical School, Montreal, QC, Canada
| | - Yvonne Bombard
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada; Genomics Health Services Research Program, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
| | - Victoria Carile
- Jewish General Hospital Stroll Cancer Prevention Centre, Montreal, QC, Canada
| | - Lesa Dawson
- Memorial University, St. John's, NL, Canada; Eastern Health Authority, St. John's, NL, Canada
| | - William D Foulkes
- Jewish General Hospital Stroll Cancer Prevention Centre, Montreal, QC, Canada; Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - David Malkin
- Division of Hematology-Oncology, Hospital for Sick Children, Toronto, ON, Canada; Department of Pediatrics, University of Toronto, Toronto, ON, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | | | - Patricia Parkin
- Department of Pediatrics, University of Toronto, Toronto, ON, Canada; Division of Pediatric Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | | | | | - Kasmintan A Schrader
- BC Cancer, Vancouver, BC, Canada; University of British Columbia, Vancouver, BC, Canada
| | - Trevor J Pugh
- Ontario Institute for Cancer Research, Toronto, ON, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
| | - Raymond H Kim
- Ontario Institute for Cancer Research, Toronto, ON, Canada; Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, University Health Network, Sinai Health System, Toronto, ON, Canada; Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada.
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3
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Davis GM, Tu S, Anderson JW, Colson RN, Gunzburg MJ, Francisco MA, Ray D, Shrubsole SP, Sobotka JA, Seroussi U, Lao RX, Maity T, Wu MZ, McJunkin K, Morris QD, Hughes TR, Wilce JA, Claycomb JM, Weng Z, Boag PR. The TRIM-NHL protein NHL-2 is a co-factor in the nuclear and somatic RNAi pathways in C. e legans. eLife 2018; 7:35478. [PMID: 30575518 PMCID: PMC6351104 DOI: 10.7554/elife.35478] [Citation(s) in RCA: 8] [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: 01/30/2018] [Accepted: 12/20/2018] [Indexed: 12/26/2022] Open
Abstract
Proper regulation of germline gene expression is essential for fertility and maintaining species integrity. In the C. elegans germline, a diverse repertoire of regulatory pathways promote the expression of endogenous germline genes and limit the expression of deleterious transcripts to maintain genome homeostasis. Here we show that the conserved TRIM-NHL protein, NHL-2, plays an essential role in the C. elegans germline, modulating germline chromatin and meiotic chromosome organization. We uncover a role for NHL-2 as a co-factor in both positively (CSR-1) and negatively (HRDE-1) acting germline 22G-small RNA pathways and the somatic nuclear RNAi pathway. Furthermore, we demonstrate that NHL-2 is a bona fide RNA binding protein and, along with RNA-seq data point to a small RNA independent role for NHL-2 in regulating transcripts at the level of RNA stability. Collectively, our data implicate NHL-2 as an essential hub of gene regulatory activity in both the germline and soma.
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Affiliation(s)
- Gregory M Davis
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia.,School of Health and Life Sciences, Federation University, Victoria, Australia
| | - Shikui Tu
- Program in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, United States
| | - Joshua Wt Anderson
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Rhys N Colson
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Menachem J Gunzburg
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | | | - Debashish Ray
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Sean P Shrubsole
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Julia A Sobotka
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Uri Seroussi
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Robert X Lao
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Tuhin Maity
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Monica Z Wu
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Katherine McJunkin
- Laboratory of Cellular and Developmental Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, United States
| | - Quaid D Morris
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Timothy R Hughes
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jacqueline A Wilce
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Julie M Claycomb
- Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Zhiping Weng
- Program in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, United States
| | - Peter R Boag
- Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
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4
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Tyc KM, Nabih A, Wu MZ, Wedeles CJ, Sobotka JA, Claycomb JM. The Conserved Intron Binding Protein EMB-4 Plays Differential Roles in Germline Small RNA Pathways of C. elegans. Dev Cell 2017; 42:256-270.e6. [DOI: 10.1016/j.devcel.2017.07.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 05/15/2017] [Accepted: 07/05/2017] [Indexed: 02/08/2023]
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5
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Nabih A, Sobotka JA, Wu MZ, Wedeles CJ, Claycomb JM. Examining the intersection between splicing, nuclear export and small RNA pathways. Biochim Biophys Acta Gen Subj 2017; 1861:2948-2955. [PMID: 28578161 DOI: 10.1016/j.bbagen.2017.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/25/2017] [Accepted: 05/29/2017] [Indexed: 01/06/2023]
Abstract
BACKGROUND Nuclear Argonaute/small RNA pathways in a variety of eukaryotic species are generally known to regulate gene expression via chromatin modulation and transcription attenuation in a process known as transcriptional gene silencing (TGS). However, recent data, including genetic screens, phylogenetic profiling, and molecular mechanistic studies, also point to a novel and emerging intersection between the splicing and nuclear export machinery with nuclear Argonaute/small RNA pathways in many organisms. SCOPE OF REVIEW In this review, we summarize the field's current understanding regarding the relationship between splicing, export and small RNA pathways, and consider the biological implications for coordinated regulation of transcripts by these pathways. We also address the importance and available approaches for understanding the RNA regulatory logic generated by the intersection of these particular pathways in the context of synthetic biology. MAJOR CONCLUSIONS The interactions between various eukaryotic RNA regulatory pathways, particularly splicing, nuclear export and small RNA pathways provide a type of combinatorial code that informs the identity ("self" versus "non-self") and dictates the fate of each transcript in a cell. Although the molecular mechanisms for how splicing and nuclear export impact small RNA pathways are not entirely clear at this early stage, the links between these pathways are widespread across eukaryotic phyla. GENERAL SIGNIFICANCE The link between splicing, nuclear export, and small RNA pathways is emerging and establishes a new frontier for understanding the combinatorial logic of gene regulation across species that could someday be harnessed for therapeutic, biotechnology and agricultural applications. This article is part of a Special Issue entitled "Biochemistry of Synthetic Biology - Recent Developments" Guest Editor: Dr. Ilka Heinemann and Dr. Patrick O'Donoghue.
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Affiliation(s)
- Amena Nabih
- Dept. of Molecular Genetics, University of Toronto, Canada
| | | | - Monica Z Wu
- Dept. of Molecular Genetics, University of Toronto, Canada
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6
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Sobotka JA, Daley M, Chandrasekaran S, Rubin BD, Thompson GJ. Structure and function of gene regulatory networks associated with worker sterility in honeybees. Ecol Evol 2016; 6:1692-701. [PMID: 26925214 PMCID: PMC4755009 DOI: 10.1002/ece3.1997] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 11/08/2015] [Revised: 01/12/2016] [Accepted: 01/18/2016] [Indexed: 01/26/2023] Open
Abstract
A characteristic of eusocial bees is a reproductive division of labor in which one or a few queens monopolize reproduction, while her worker daughters take on reproductively altruistic roles within the colony. The evolution of worker reproductive altruism involves indirect selection for the coordinated expression of genes that regulate personal reproduction, but evidence for this type of selection remains elusive. In this study, we tested whether genes coexpressed under queen‐induced worker sterility show evidence of adaptive organization within a model brain transcriptional regulatory network (TRN). If so, this structured pattern would imply that indirect selection on nonreproductive workers has influenced the functional organization of genes within the network, specifically to regulate the expression of sterility. We found that literature‐curated sets of candidate genes for sterility, ranging in size from 18 to 267, show strong evidence of clustering within the three‐dimensional space of the TRN. This finding suggests that our candidate sets of genes for sterility form functional modules within the living bee brain's TRN. Moreover, these same gene sets colocate to a single, albeit large, region of the TRN's topology. This spatially organized and convergent pattern contrasts with a null expectation for functionally unrelated genes to be haphazardly distributed throughout the network. Our meta‐genomic analysis therefore provides first evidence for a truly “social transcriptome” that may regulate the conditional expression of honeybee worker sterility.
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Affiliation(s)
- Julia A Sobotka
- Biology Department Western University 1151 Richmond Street London ON N6A 5B7 Canada
| | - Mark Daley
- Biology Department Western University 1151 Richmond Street London ON N6A 5B7 Canada
| | - Sriram Chandrasekaran
- Harvard Society of Fellows Faculty of Arts and Sciences Harvard University 78 Mount Auburn Street Cambridge Massachusetts; The Broad Institute of MIT and Harvard 415 Main Street Cambridge Massachusetts
| | - Benjamin D Rubin
- Biology Department Western University 1151 Richmond Street London ON N6A 5B7 Canada
| | - Graham J Thompson
- Biology Department Western University 1151 Richmond Street London ON N6A 5B7 Canada
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