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Amor-Guéret M. Loss of cytidine deaminase expression as a potential attempt to counteract the process of carcinogenesis by reducing basal PARP-1 activity and increasing tau levels. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167213. [PMID: 38714266 DOI: 10.1016/j.bbadis.2024.167213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/01/2024] [Accepted: 05/01/2024] [Indexed: 05/09/2024]
Abstract
Cytidine deaminase (CDA) is a pyrimidine salvage pathway enzyme that catalyzes the hydrolytic deamination of free cytidine and deoxycytidine to uridine and deoxyuridine, respectively. Our team discovered that CDA deficiency is associated with several aspects of genetic instability, such as increased sister chromatid exchange and ultrafine anaphase bridge frequencies. Based on these results, we sought (1) to determine how CDA deficiency contributes to genetic instability, (2) to explore the possible relationships between CDA deficiency and carcinogenesis, and (3) to develop a new anticancer treatment targeting CDA-deficient tumors. This review summarizes our major findings indicating that CDA deficiency is associated with a genetic instability that does not confer an increased cancer risk. In light of our results and published data, I propose a novel hypothesis that loss of CDA, by reducing basal PARP-1 activity and increasing Tau levels, may reflect an attempt to prevent, slow or reverse the process of carcinogenesis.
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Affiliation(s)
- Mounira Amor-Guéret
- Institut Curie, PSL Research University, UMR 3348, 91405 Orsay, France; CNRS UMR 3348, Centre Universitaire, 91405 Orsay, France; Université Paris-Saclay, Centre Universitaire, UMR 3348, 91405 Orsay, France.
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2
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Harrold EC, Stadler ZK. Upper Gastrointestinal Cancers and the Role of Genetic Testing. Hematol Oncol Clin North Am 2024; 38:677-691. [PMID: 38458854 DOI: 10.1016/j.hoc.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
Beyond the few established hereditary cancer syndromes with an upper gastrointestinal cancer component, there is increasing recognition of the contribution of novel pathogenic germline variants (gPVs) to upper gastrointestinal carcinogenesis. The detection of gPVs has potential implications for novel treatment approaches of the index cancer patient as well as long-term implications for surveillance and risk-reducing measures for cancer survivors and far-reaching implications for the patients' family. With widespread availability of multigene panel testing, new associations may be identified with germline-somatic integration being critical to determining true causality of novel gPVs. Comprehensive cancer care should incorporate both somatic and germline testing.
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Affiliation(s)
- Emily C Harrold
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Medical Oncology, Mater Misericordiae University Hospital, Dublin, Ireland. https://twitter.com/EmilyHarrold6
| | - Zsofia K Stadler
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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3
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Dourdin TS, Berthelin C, Guyomard K, Morin A, Morandi N, Elie N, Villain-Naud N, Rivière G, Sussarellu R. The Pacific oyster reproduction is affected by early-life exposure to environmental pesticide mixture: A multigenerational study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 937:173569. [PMID: 38810751 DOI: 10.1016/j.scitotenv.2024.173569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/15/2024] [Accepted: 05/25/2024] [Indexed: 05/31/2024]
Abstract
Pesticides threat marine organisms worldwide. Among them, the Pacific oyster is a bivalve mollusc model in marine ecotoxicology. A large body of literature already stated on the multiple-scale effects pesticides can trigger in the Pacific oyster, throughout its life cycle and in a delayed manner. In particular, reproductive toxicity is of major concern because of its influence on population dynamics. However, past studies mostly investigated pesticide reprotoxicity as a direct effect of exposure during gametogenesis or directly on gametes and little is known about the influence of an early embryo exposure on the breed capacity. Therefore, we studied delayed and multigenerational consequences through gametogenesis features (i.e. sex ratio, glycogen content, gene expression) and reproductive success in two consecutive oyster generations (F0 and F1) exposed to an environmentally-relevant pesticide mixture (sum nominal concentration: 2.85 μg.L-1) during embryo-larval development (0-48 h post fertilization, hpf). In the first generation, glycogen content increased in exposed individuals and the expression of some gametogenesis target genes was modified. The reproductive success measured 48 hpf was higher in exposed individuals. A multigenerational influence was observed in the second generation, with feminisation, acceleration of gametogenesis processes and the sex-specific modification of glycogen metabolism in individuals from exposed parents. This study is the first to highlight the delayed effects on reproduction induced by an early exposure to pesticides, and its multigenerational implications in the Pacific oyster. It suggests that environmental pesticide contamination can have impacts on the recruitment and the dynamics of natural oyster populations exposed during their embryo-larval phase.
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Affiliation(s)
- Thomas Sol Dourdin
- Ifremer, CCEM Contamination Chimique des Écosystèmes Marins, F-44000, France
| | - Clothilde Berthelin
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Killian Guyomard
- Ifremer, EMMA Plateforme Expérimentale Mollusques Marins Atlantique, F-85230, France
| | - Alicia Morin
- Ifremer, CCEM Contamination Chimique des Écosystèmes Marins, F-44000, France
| | - Nathan Morandi
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Nicolas Elie
- Université de Caen Normandie, Structure Federative 4207 'Normandie Oncologie', PLATON Services Unit, Virtual'His, F-14000 Caen, France
| | - Nadège Villain-Naud
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
| | - Guillaume Rivière
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR8067, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Institut de Recherche et Développement (IRD), Sorbonne Université (SU), Université de Caen Normandie (UCN), Université des Antilles (UA), 75231 Paris CEDEX, France
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4
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Montégut L, López-Otín C, Kroemer G. Aging and cancer. Mol Cancer 2024; 23:106. [PMID: 38760832 PMCID: PMC11102267 DOI: 10.1186/s12943-024-02020-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024] Open
Abstract
Aging and cancer exhibit apparent links that we will examine in this review. The null hypothesis that aging and cancer coincide because both are driven by time, irrespective of the precise causes, can be confronted with the idea that aging and cancer share common mechanistic grounds that are referred to as 'hallmarks'. Indeed, several hallmarks of aging also contribute to carcinogenesis and tumor progression, but some of the molecular and cellular characteristics of aging may also reduce the probability of developing lethal cancer, perhaps explaining why very old age (> 90 years) is accompanied by a reduced incidence of neoplastic diseases. We will also discuss the possibility that the aging process itself causes cancer, meaning that the time-dependent degradation of cellular and supracellular functions that accompanies aging produces cancer as a byproduct or 'age-associated disease'. Conversely, cancer and its treatment may erode health and drive the aging process, as this has dramatically been documented for cancer survivors diagnosed during childhood, adolescence, and young adulthood. We conclude that aging and cancer are connected by common superior causes including endogenous and lifestyle factors, as well as by a bidirectional crosstalk, that together render old age not only a risk factor of cancer but also an important parameter that must be considered for therapeutic decisions.
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Affiliation(s)
- Léa Montégut
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Institut, Villejuif, France
| | - Carlos López-Otín
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Université Paris Cité, Sorbonne Université, Paris, France
- Facultad de Ciencias de la Vida y la Naturaleza, Universidad Nebrija, Madrid, Spain
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Université Paris Cité, Sorbonne Université, Paris, France.
- Metabolomics and Cell Biology Platforms, Gustave Roussy Institut, Villejuif, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
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5
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Bereda CC, Dewey EB, Nasr MA, Sekelsky J. Functions of the Bloom Syndrome Helicase N-terminal Intrinsically Disordered Region. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.12.589165. [PMID: 38659896 PMCID: PMC11042211 DOI: 10.1101/2024.04.12.589165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Bloom Syndrome helicase (Blm) is a RecQ family helicase involved in DNA repair, cell-cycle progression, and development. Pathogenic variants in human BLM cause the autosomal recessive disorder Bloom Syndrome, characterized by predisposition to numerous types of cancer. Prior studies of Drosophila Blm mutants lacking helicase activity or protein have shown sensitivity to DNA damaging agents, defects in repairing DNA double-strand breaks (DSBs), female sterility, and improper segregation of chromosomes in meiosis. Blm orthologs have a well conserved and highly structured RecQ helicase domain, but more than half of the protein, particularly in the N-terminus, is predicted to be unstructured. Because this region is poorly conserved across multicellular organisms, we compared closely related species to identify regions of conservation, potentially indicating important functions. We deleted two of these Drosophila-conserved regions in D. melanogaster using CRISPR/Cas9 gene editing and assessed the effects on different Blm functions. Each deletion had distinct effects on different Blm activities. Deletion of either conserved region 1 (CR1) or conserved region 2 (CR2) compromised DSB repair through synthesis-dependent strand annealing and resulted in increased mitotic crossovers. In contrast, CR2 is critical for embryonic development but CR1 is not as important. CR1 deletion allows for proficient meiotic chromosome segregation but does lead to defects in meiotic crossover designation and patterning. Finally, deletion of CR2 does not lead to significant meiotic defects, indicating that while each region has overlapping functions, there are discreet roles facilitated by each. These results provide novel insights into functions of the N-terminal disordered region of Blm.
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Affiliation(s)
- Colleen C. Bereda
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Evan B. Dewey
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Integrative Program for Biological and Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Mohamed A. Nasr
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Jeff Sekelsky
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Integrative Program for Biological and Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
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Kligfeld H, Han I, Abraham A, Shukla V. Alternative DNA structures in hematopoiesis and adaptive immunity. Adv Immunol 2024; 161:109-126. [PMID: 38763699 DOI: 10.1016/bs.ai.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Besides the canonical B-form, DNA also adopts alternative non-B form conformations which are highly conserved in all domains of life. While extensive research over decades has centered on the genomic functions of B-form DNA, understanding how non-B-form conformations influence functional genomic states remains a fundamental and open question. Recent studies have ascribed alternative DNA conformations such as G-quadruplexes and R-loops as important functional features in eukaryotic genomes. This review delves into the biological importance of alternative DNA structures, with a specific focus on hematopoiesis and adaptive immunity. We discuss the emerging roles of G-quadruplex and R-loop structures, the two most well-studied alternative DNA conformations, in the hematopoietic compartment and present evidence for their functional roles in normal cellular physiology and associated pathologies.
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Affiliation(s)
- Heather Kligfeld
- Department of Cell and Developmental Biology, Northwestern University, Chicago, IL, United States; Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, United States
| | - Isabella Han
- Department of Cell and Developmental Biology, Northwestern University, Chicago, IL, United States
| | - Ajay Abraham
- Department of Cell and Developmental Biology, Northwestern University, Chicago, IL, United States; Center for Human Immunobiology, Northwestern University, Chicago, IL, United States
| | - Vipul Shukla
- Department of Cell and Developmental Biology, Northwestern University, Chicago, IL, United States; Center for Human Immunobiology, Northwestern University, Chicago, IL, United States; Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, United States.
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Flynn JM, Yamashita YM. The implications of satellite DNA instability on cellular function and evolution. Semin Cell Dev Biol 2024; 156:152-159. [PMID: 37852904 DOI: 10.1016/j.semcdb.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/21/2023] [Accepted: 10/11/2023] [Indexed: 10/20/2023]
Abstract
Abundant tandemly repeated satellite DNA is present in most eukaryotic genomes. Previous limitations including a pervasive view that it was uninteresting junk DNA, combined with challenges in studying it, are starting to dissolve - and recent studies have found important functions for satellite DNAs. The observed rapid evolution and implied instability of satellite DNA now has important significance for their functions and maintenance within the genome. In this review, we discuss the processes that lead to satellite DNA copy number instability, and the importance of mechanisms to manage the potential negative effects of instability. Satellite DNA is vulnerable to challenges during replication and repair, since it forms difficult-to-process secondary structures and its homology within tandem arrays can result in various types of recombination. Satellite DNA instability may be managed by DNA or chromatin-binding proteins ensuring proper nuclear localization and repair, or by proteins that process aberrant structures that satellite DNAs tend to form. We also discuss the pattern of satellite DNA mutations from recent mutation accumulation (MA) studies that have tracked changes in satellite DNA for up to 1000 generations with minimal selection. Finally, we highlight examples of satellite evolution from studies that have characterized satellites across millions of years of Drosophila fruit fly evolution, and discuss possible ways that selection might act on the satellite DNA composition.
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Affiliation(s)
- Jullien M Flynn
- Whitehead Institute for Biomedical Research, Cambridge, MA, USA; Howard Hughes Medical Institute, Cambridge, MA, USA.
| | - Yukiko M Yamashita
- Whitehead Institute for Biomedical Research, Cambridge, MA, USA; Howard Hughes Medical Institute, Cambridge, MA, USA; Massachusetts Institute of Technology, Cambridge, MA, USA.
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Zhao Q, Zhang M, Li Y, Zhang C, Zhang Y, Shao Q, Wei W, Yang W, Ban B. Molecular diagnosis is an important indicator for response to growth hormone therapy in children with short stature. Clin Chim Acta 2024; 554:117779. [PMID: 38220134 DOI: 10.1016/j.cca.2024.117779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/03/2024] [Accepted: 01/09/2024] [Indexed: 01/16/2024]
Abstract
BACKGROUND Significant differences have been observed in the efficacy of recombinant human growth hormone (rhGH) treatment for short children. The present study aimed to identify the genetic etiology of short stature and to assess the role of molecular diagnosis in predicting responses to rhGH treatment. METHODS A total of 407 short children were included in the present study, 226 of whom received rhGH treatment. Whole-exome sequencing (WES) was conducted on short children to identify the underlying genetic etiology. Correlations between molecular diagnosis and the efficacy of rhGH treatment were examined. RESULTS Pathogenic or likely pathogenic mutations were identified in 86 of the 407 patients (21.1%), including 36 (41.9%) novel variants. Among the multiple pathways affecting short stature, genes involved in fundamental cellular processes (38.7%) play a larger role, especially the RAS-MAPK pathway. In general, patients without pathogenic mutations responded better to rhGH than those with mutations. Furthermore, patients with hormone signaling pathway mutations had a better response to rhGH, while those with paracrine factor mutations had a worse response to rhGH. CONCLUSIONS This study highlights the utility of WES in identifying genetic etiology in children with short stature. Identifying likely causal mutations is an important factor in predicting rhGH response.
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Affiliation(s)
- Qianqian Zhao
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Mei Zhang
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Yanying Li
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Chuanpeng Zhang
- Medical Research Center, Affiliated Hospital of Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Yanhong Zhang
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Qian Shao
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Wei Wei
- Medical Research Center, Affiliated Hospital of Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China
| | - Wanling Yang
- Department of Pediatrics and Adolescent Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam 999077 Hong Kong, China.
| | - Bo Ban
- Department of Endocrinology, Genetics and Metabolism, Affiliated Hospital of Jining Medical University, Jining Medical University, 89 Guhuai Road, Jining, Shandong 272029, PR China; Chinese Research Center for Behavior Medicine in Growth and Development, 89 Guhuai Road, Jining, Shandong 272029, PR China.
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Wojtara MS, Kang J, Zaman M. Congenital Telangiectatic Erythema: Scoping Review. JMIR DERMATOLOGY 2023; 6:e48413. [PMID: 37796556 PMCID: PMC10587801 DOI: 10.2196/48413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 08/19/2023] [Accepted: 09/15/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND Congenital telangiectatic erythema (CTE), also known as Bloom syndrome, is a rare autosomal recessive disorder characterized by below-average height, a narrow face, a red skin rash occurring on sun-exposed areas of the body, and an increased risk of cancer. CTE is one of many genodermatoses and photodermatoses associated with defects in DNA repair. CTE is caused by a mutation occurring in the BLM gene, which causes abnormal breaks in chromosomes. OBJECTIVE We aimed to analyze the existing literature on CTE to provide additional insight into its heredity, the spectrum of clinical presentations, and the management of this disorder. In addition, the gaps in current research and the use of artificial intelligence to streamline clinical diagnosis and the management of CTE are outlined. METHODS A literature search was conducted on PubMed, DOAJ, and Scopus using search terms such as "congenital telangiectatic erythema," "bloom syndrome," and "bloom-torre-machacek." Due to limited current literature, studies published from January 2000 to January 2023 were considered for this review. A total of 49 sources from the literature were analyzed. RESULTS Through this scoping review, the researchers were able to identify several publications focusing on Bloom syndrome. Some common subject areas included the heredity of CTE, clinical presentations of CTE, and management of CTE. In addition, the literature on rare diseases shows the potential advancements in understanding and treatment with artificial intelligence. Future studies should address the causes of heterogeneity in presentation and examine potential therapeutic candidates for CTE and similarly presenting syndromes. CONCLUSIONS This review illuminated current advances in potential molecular targets or causative pathways in the development of CTE as well as clinical features including erythema, increased cancer risk, and growth abnormalities. Future studies should continue to explore innovations in this space, especially in regard to the use of artificial intelligence, including machine learning and deep learning, for the diagnosis and clinical management of rare diseases such as CTE.
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Affiliation(s)
- Magda Sara Wojtara
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Jayne Kang
- Department of Health Sciences, Queen's University, Kingston, ON, Canada
| | - Mohammed Zaman
- Department of Biology, Stony Brook University, Stony Brook, NY, United States
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Demir D. Insights into the New Molecular Updates in Acute Myeloid Leukemia Pathogenesis. Genes (Basel) 2023; 14:1424. [PMID: 37510328 PMCID: PMC10378849 DOI: 10.3390/genes14071424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/28/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
As our understanding of the biologic basis of acute myeloid leukemia evolves, so do the classification systems used to describe this group of cancers. Early classification systems focused on the morphologic features of blasts and other cell populations; however, the explosion in genomic technologies has led to rapid growth in our understanding of these diseases and thus the refinement of classification systems. Recently, two new systems, the International Consensus Classification system and the 5th edition of the World Health Organization classification of tumors of hematopoietic and lymphoid tissues, were published to incorporate the latest genomic advances in blood cancer. This article reviews the major updates in acute myeloid leukemia in both systems and highlights the biologic insights that have driven these changes.
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Affiliation(s)
- Derya Demir
- Department of Pathology, Ege University Faculty of Medicine, Izmir 35100, Turkey
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11
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Sherwood K, Ward JC, Soriano I, Martin L, Campbell A, Rahbari R, Kafetzopoulos I, Sproul D, Green A, Sampson JR, Donaldson A, Ong KR, Heinimann K, Nielsen M, Thomas H, Latchford A, Palles C, Tomlinson I. Germline de novo mutations in families with Mendelian cancer syndromes caused by defects in DNA repair. Nat Commun 2023; 14:3636. [PMID: 37336879 PMCID: PMC10279637 DOI: 10.1038/s41467-023-39248-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 05/31/2023] [Indexed: 06/21/2023] Open
Abstract
DNA repair defects underlie many cancer syndromes. We tested whether de novo germline mutations (DNMs) are increased in families with germline defects in polymerase proofreading or base excision repair. A parent with a single germline POLE or POLD1 mutation, or biallelic MUTYH mutations, had 3-4 fold increased DNMs over sex-matched controls. POLE had the largest effect. The DNMs carried mutational signatures of the appropriate DNA repair deficiency. No DNM increase occurred in offspring of MUTYH heterozygous parents. Parental DNA repair defects caused about 20-150 DNMs per child, additional to the ~60 found in controls, but almost all extra DNMs occurred in non-coding regions. No increase in post-zygotic mutations was detected, excepting a child with bi-allelic MUTYH mutations who was excluded from the main analysis; she had received chemotherapy and may have undergone oligoclonal haematopoiesis. Inherited DNA repair defects associated with base pair-level mutations increase DNMs, but phenotypic consequences appear unlikely.
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Affiliation(s)
- Kitty Sherwood
- Cancer Research UK Edinburgh Centre and MRC Human Genetics Unit, Institute of Genomics and Cancer, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Joseph C Ward
- Dept of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, UK
| | - Ignacio Soriano
- Dept of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, UK
| | - Lynn Martin
- Institute of Cancer and Genomic Sciences, University of Birmingham Medical School, Vincent Drive, Edgbaston, Birmingham, B15 2JJ, UK
| | - Archie Campbell
- Centre for Genetics and Experimental Medicine, Institute of Genetics and Cancer, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Raheleh Rahbari
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Ioannis Kafetzopoulos
- Cancer Research UK Edinburgh Centre and MRC Human Genetics Unit, Institute of Genomics and Cancer, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Duncan Sproul
- Cancer Research UK Edinburgh Centre and MRC Human Genetics Unit, Institute of Genomics and Cancer, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Andrew Green
- Department of Clinical Genetics, Children's Health Ireland and School of Medicine University College, Dublin, Ireland
| | - Julian R Sampson
- Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University School of Medicine, Cardiff, UK
| | - Alan Donaldson
- Bristol Regional Clinical Genetics Service, St Michael's Hospital, Southwell Street, Bristol, BS2 8EG, UK
| | - Kai-Ren Ong
- West Midlands Regional Genetics Service, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Karl Heinimann
- Institute for Medical Genetics and Pathology, University Hospital Basel, Basel, BS, Switzerland
| | - Maartje Nielsen
- Department of Clinical Genetics, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands
| | - Huw Thomas
- St Mark's Hospital, Watford Road, Harrow, HA1 3UJ, UK
| | | | - Claire Palles
- Institute of Cancer and Genomic Sciences, University of Birmingham Medical School, Vincent Drive, Edgbaston, Birmingham, B15 2JJ, UK.
| | - Ian Tomlinson
- Dept of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford, OX3 7DQ, UK.
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Farzanehpour M, Miri A, Ghorbani Alvanegh A, Esmaeili Gouvarchinghaleh H. Viral Vectors, Exosomes, and Vexosomes: Potential Armamentarium for Delivering CRISPR/Cas to Cancer Cells. Biochem Pharmacol 2023; 212:115555. [PMID: 37075815 DOI: 10.1016/j.bcp.2023.115555] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/21/2023]
Abstract
The underlying cause of cancer is genetic disruption, so gene editing technologies, particularly CRISPR/Cas systems can be used to go against cancer. The field of gene therapy has undergone many transitions over its 40-year history. Despite its many successes, it has also suffered many failures in the battle against malignancies, causing really adverse effects instead of therapeutic outcomes. At the tip of this double-edged sword are viral and non-viral-based vectors, which have profoundly transformed the way scientists and clinicians develop therapeutic platforms. Viruses such as lentivirus, adenovirus, and adeno-associated viruses are the most common viral vectors used for delivering the CRISPR/Cas system into human cells. In addition, among non-viral vectors, exosomes, especially tumor-derived exosomes (TDEs), have proven to be quite effective at delivering this gene editing tool. The combined use of viral vectors and exosomes, called vexosomes, seems to be a solution to overcoming the obstacles of both delivery systems.
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Affiliation(s)
- Mahdieh Farzanehpour
- Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Miri
- Human Genetics Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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13
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Drbohlavová T, Argalácsová S, Soukupová J, Vočka M. Germline Pathogenic Variants in Squamous Cell Carcinoma of the Head and Neck. Folia Biol (Praha) 2023; 69:107-115. [PMID: 38410968 DOI: 10.14712/fb2023069040107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Head and neck squamous cell carcinoma (HNSCC) presents a significant global health problem with variable geographic distribution and risk factors, including tobacco and alcohol abuse, human papillomavirus infections, and genetic predisposition. While the majority of cases are sporadic, several well-defined hereditary syndromes have been associated with a higher risk of developing HNSCC including Li-Fraumeni syndrome, Fanconi anaemia, Bloom syndrome, familial atypical multiple mole melanoma, and dyskeratosis congenita. There is also evidence of familial clusters of HNSCC, suggesting a genetic component in the development of the disease. Germ-line genetic testing in HNSCC using next-generation sequencing has revealed a wide range of germline variants, some of which were not anticipated based on standard guidelines. These variants may influence treatment decisions and have the potential to be targeted with precision medicine in the future. Despite these advances, routine germline genetic testing for HNSCC is not currently recommended and remains reserved for HNSCC cases with early onset or strong family cancer history. However, the increasing availability of germline genetic testing warrants development of more comprehensive and standardized testing protocols. Germline genetic testing also has the potential to influence precision-guided treatment in HNSCC patients carrying germline pathogenic variants.
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Affiliation(s)
- Tereza Drbohlavová
- Institute of Radiation Oncology, First Faculty of Medicine, Charles University and Bulovka University Hospital, Prague, Czech Republic
| | - Soňa Argalácsová
- Department of Oncology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic.
| | - Jana Soukupová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Michal Vočka
- Department of Oncology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
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14
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Ovejero S, Viziteu E, Dutrieux L, Devin J, Lin YL, Alaterre E, Jourdan M, Basbous J, Requirand G, Robert N, de Boussac H, Seckinger A, Hose D, Vincent L, Herbaux C, Constantinou A, Pasero P, Moreaux J. The BLM helicase is a new therapeutic target in multiple myeloma involved in replication stress survival and drug resistance. Front Immunol 2022; 13:983181. [PMID: 36569948 PMCID: PMC9780552 DOI: 10.3389/fimmu.2022.983181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
Multiple myeloma (MM) is a hematologic cancer characterized by accumulation of malignant plasma cells in the bone marrow. To date, no definitive cure exists for MM and resistance to current treatments is one of the major challenges of this disease. The DNA helicase BLM, whose depletion or mutation causes the cancer-prone Bloom's syndrome (BS), is a central factor of DNA damage repair by homologous recombination (HR) and genomic stability maintenance. Using independent cohorts of MM patients, we identified that high expression of BLM is associated with a poor outcome with a significant enrichment in replication stress signature. We provide evidence that chemical inhibition of BLM by the small molecule ML216 in HMCLs (human myeloma cell lines) leads to cell cycle arrest and increases apoptosis, likely by accumulation of DNA damage. BLM inhibition synergizes with the alkylating agent melphalan to efficiently inhibit growth and promote cell death in HMCLs. Moreover, ML216 treatment re-sensitizes melphalan-resistant cell lines to this conventional therapeutic agent. Altogether, these data suggest that inhibition of BLM in combination with DNA damaging agents could be of therapeutic interest in the treatment of MM, especially in those patients with high BLM expression and/or resistance to melphalan.
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Affiliation(s)
- Sara Ovejero
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Elena Viziteu
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Laure Dutrieux
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Julie Devin
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Yea-Lih Lin
- Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Elina Alaterre
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Michel Jourdan
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Jihane Basbous
- Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Guilhem Requirand
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
| | - Nicolas Robert
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
| | | | | | - Dirk Hose
- Department of Hematology and Immunology, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Laure Vincent
- Department of Hematology and Immunology, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Charles Herbaux
- Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France,Department of Hematology and Immunology, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | | | - Philippe Pasero
- Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Jérôme Moreaux
- Department of Biological Hematology, CHU Montpellier, Montpellier, France,Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France,Department of Clinical Hematology, CHU Montpellier, Montpellier, France,*Correspondence: Jérôme Moreaux,
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15
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Zhang Q, Zhang X, Ma F, Zhang CY. Advances in quantum dot-based biosensors for DNA-modifying enzymes assay. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Wang T, Hu J, Li Y, Bi L, Guo L, Jia X, Zhang X, Li D, Hou X, Modesti M, Xi X, Liu C, Sun B. Bloom Syndrome Helicase Compresses Single‐Stranded DNA into Phase‐Separated Condensates. Angew Chem Int Ed Engl 2022; 61:e202209463. [DOI: 10.1002/anie.202209463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Teng Wang
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Jiaojiao Hu
- Interdisciplinary Research Center on Biology and Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 201210 China
| | - Yanan Li
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Lulu Bi
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Lijuan Guo
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Xinshuo Jia
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Xia Zhang
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Dan Li
- Bio-X Institutes Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders Ministry of Education Shanghai Jiao Tong University Shanghai 200030 China
| | - Xi‐Miao Hou
- College of Life Sciences Northwest A&F University Yangling Shaanxi 712100 China
| | - Mauro Modesti
- Cancer Research Center of Marseille CNRS UMR7258 Inserm U1068 Institut Paoli-Calmettes Aix-Marseille Université 13273 Marseille France
| | - Xu‐Guang Xi
- College of Life Sciences Northwest A&F University Yangling Shaanxi 712100 China
- Laboratoire de Biologie et Pharmacologie Appliquée (LBPA) CNRS UMR8113 ENS Pairs-Saclay Université Paris-Saclay 91190 Gif-sur-Yvette France
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 201210 China
| | - Bo Sun
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
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17
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Usami M, Ikawa Y, Sakai Y, Fujiki T, Wada T. Refractory gastroduodenal ulcers: A rare complication with Bloom syndrome. Clin Case Rep 2022; 10:CCR36141. [PMID: 36110332 PMCID: PMC9465695 DOI: 10.1002/ccr3.6141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/23/2022] [Accepted: 07/04/2022] [Indexed: 11/08/2022] Open
Abstract
Bloom syndrome patients often develop severe gastrointestinal symptoms mainly caused by gastric tumors due to DNA repair disorder. Here, we report 31‐year‐old Bloom syndrome patient suffering persistent abdominal pain due to refractory gastroduodenal ulcers which required gastroduodenectomy. Various causes should be considered, and the accumulation of their reports is warranted.
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Affiliation(s)
- Masaaki Usami
- Department of Pediatrics School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Kanazawa Japan
| | - Yasuhiro Ikawa
- Department of Pediatrics School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Kanazawa Japan
| | - Yuta Sakai
- Department of Pediatrics School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Kanazawa Japan
| | - Toshihiro Fujiki
- Department of Pediatrics School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Kanazawa Japan
| | - Taizo Wada
- Department of Pediatrics School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Kanazawa Japan
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18
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Wang T, Hu J, Li Y, Bi L, Guo L, Jia X, Zhang X, Li D, Hou XM, Modesti M, Xi XG, Liu C, SUN BO. Bloom Syndrome Helicase Compresses Single‐Stranded DNA into Phase‐Separated Condensates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Teng Wang
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Jiaojiao Hu
- Shanghai Institute of Organic Chemistry Interdisciplinary Research Center on Biology and Chemistry CHINA
| | - Yanan Li
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Lulu Bi
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Lijuan Guo
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Xinshuo Jia
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Xia Zhang
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of Life Science and Technology CHINA
| | - Dan Li
- Shanghai Jiao Tong University Bio-X Institutes CHINA
| | - Xi-Miao Hou
- Northwest Agriculture University: Northwest Agriculture and Forestry University College of Life Sciences CHINA
| | - Mauro Modesti
- Aix-Marseille Universite Cancer Research Center of Marseille FRANCE
| | - Xu-Guang Xi
- Northwest A&F University: Northwest Agriculture and Forestry University College of Life Sciences CHINA
| | - Cong Liu
- Shanghai Institute of Organic Chemistry Interdisciplinary Research Center on Biology and Chemistry CHINA
| | - BO SUN
- ShanghaiTech University School of Life Science and Technology 393 Central Huaxia RoadPudong District 201210 Shanghai CHINA
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19
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Genetic Disorders with Predisposition to Paediatric Haematopoietic Malignancies—A Review. Cancers (Basel) 2022; 14:cancers14153569. [PMID: 35892827 PMCID: PMC9329786 DOI: 10.3390/cancers14153569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/26/2022] [Accepted: 07/11/2022] [Indexed: 02/04/2023] Open
Abstract
The view of paediatric cancer as a genetic disease arises as genetic research develops. Germline mutations in cancer predisposition genes have been identified in about 10% of children. Paediatric cancers are characterized by heterogeneity in the types of genetic alterations that drive tumourigenesis. Interactions between germline and somatic mutations are a key determinant of cancer development. In 40% of patients, the family history does not predict the presence of inherited cancer predisposition syndromes and many cases go undetected. Paediatricians should be aware of specific symptoms, which highlight the need of evaluation for cancer syndromes. The quickest possible identification of such syndromes is of key importance, due to the possibility of early detection of neoplasms, followed by presymptomatic genetic testing of relatives, implementation of appropriate clinical procedures (e.g., avoiding radiotherapy), prophylactic surgical resection of organs at risk, or searching for donors of hematopoietic stem cells. Targetable driver mutations and corresponding signalling pathways provide a novel precision medicine strategy.Therefore, there is a need for multi-disciplinary cooperation between a paediatrician, an oncologist, a geneticist, and a psychologist during the surveillance of families with an increased cancer risk. This review aimed to emphasize the role of cancer-predisposition gene diagnostics in the genetic surveillance and medical care in paediatric oncology.
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20
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Yang R, Zhan Y, Li Y, Dai SY, He SW, Ye CJ, Meng LD, Chen DQ, Dong CB, Chen L, Chen G, Dong KR, Li K, Zheng S, Li J, Yao W, Dong R. The Cellular and Molecular Landscape of Synchronous Pediatric Sialoblastoma and Hepatoblastoma. Front Oncol 2022; 12:893206. [PMID: 35860547 PMCID: PMC9289541 DOI: 10.3389/fonc.2022.893206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/31/2022] [Indexed: 01/05/2023] Open
Abstract
Sialoblastoma (SBL) is an infrequent embryonal malignant tumor originating from the salivary gland, resembling primitive salivary gland anlage, whereas hepatoblastoma (HB) is the most common pediatric liver malignancy. The simultaneous occurrence of both tumors is extremely rare. Here we reported a case of a 6-month-old infant diagnosed with synchronous SBL and HB. The patient received neoadjuvant chemotherapy followed by surgical resection. Fresh tissues of both tumors were collected before and after chemotherapy, which were further profiled by whole exome sequencing (WES) and single-cell RNA sequencing (scRNA-seq). WES analysis revealed potential somatic driver mutation PIK3CA p.Glu454Lys for SBL and canonical mutation CTNNB1 p.Ser45Pro for HB. No shared somatic variants or common copy number alterations were found between SBL and HB primary tumor samples. Though scRNA-seq, single-cell atlases were constructed for both tumors. SBL may recapitulate a pre-acinar stage in the development of salivary gland, including basaloid, duct-like, myoepithelial-like, and cycling phenotypes. In the meantime, HB was composed of tumor cells resembling different stages of the liver, including hepatocyte-like, hepatic progenitor-like, and hepatoblast-like cells. After chemotherapy, both tumors were induced into a more mature phenotype. In terms of transcriptional signatures, SBL and HB showed enhanced expression of epithelial markers KRT8, KRT18, and essential embryo development genes SDC1, MDK, indicating the disruption of normal embryo epithelium development. Finally, heterozygous deleterious germline mutation BLM and FANCI were identified which could predispose the patient to higher cancer risk. It partially explained the reason for the co-occurrence of SBL and HB. Taken together, we provided valuable resources for deciphering cellular heterogeneity and adaptive change of tumor cells after chemotherapy for synchronous SBL and HB, providing insights into the mechanisms leading to synchronous pediatric tumors.
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Affiliation(s)
- Ran Yang
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Yong Zhan
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Yi Li
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Shu-Yang Dai
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Shi-Wei He
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Chun-Jing Ye
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Ling-Du Meng
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - De-Qian Chen
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Chen-Bin Dong
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Lian Chen
- Department of Pathology, Children’s Hospital of Fudan University, Shanghai, China
| | - Gong Chen
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Kui-Ran Dong
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Kai Li
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Shan Zheng
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Jun Li
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
- *Correspondence: Rui Dong, ; Wei Yao, ; Jun Li,
| | - Wei Yao
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
- *Correspondence: Rui Dong, ; Wei Yao, ; Jun Li,
| | - Rui Dong
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Birth Defect, Shanghai, China
- *Correspondence: Rui Dong, ; Wei Yao, ; Jun Li,
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21
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Gniadecki R, Iyer A, Hennessey D, Khan L, O'Keefe S, Redmond D, Storek J, Durand C, Cohen-Tervaert JW, Osman M. Genomic instability in early systemic sclerosis. J Autoimmun 2022; 131:102847. [PMID: 35803104 DOI: 10.1016/j.jaut.2022.102847] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Systemic sclerosis (SSc) is associated with secondary malignancies. Previous studies have suggested that mutated cancer proteins, such as RNA polymerase III, are autoantigens promoting an inflammatory response in SSc. However, it has never been previously investigated whether non-neoplastic tissue in SSc harbors mutations which may play a role in SSc pathogenesis. METHODS Skin biopsies were obtained from 8 sequential patients with a progressive form of early stage SSc (with severe skin and/or lung involvement). Areas of dermal fibrosis were microdissected and analyzed with deep, whole exome sequencing. Gene mutation patterns were compared to autologous buccal mucosal cells as a control. RESULTS SSc skin biopsies were hypermutated with an average of 58 mutations/106 base pairs. The mutational pattern in all samples exhibited a clock-like signature, which is ubiquitous in cancers and in senescent cells. Of the 1997 genes we identified which were mutated in at least two SSc patients, 39 genes represented cancer drivers (i.e. tumor suppressor genes or oncogenes) which are commonly found in gynecological, squamous and gastrointestinal cancer signatures. Of all the mutations, the most common mutated genes were important in regulating pathways related to epigenetic histone modifications, DNA repair and genome integrity. CONCLUSIONS Somatic hypermutation occurs in fibrotic skin in patients with early progressive SSc. Cancer driver gene mutations may potentially play a fundamental role in the pathogenesis of SSc.
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Affiliation(s)
| | | | | | - Lamia Khan
- Division of Rheumatology, University of Alberta, Edmonton, Canada
| | | | - Desiree Redmond
- Division of Rheumatology, University of Alberta, Edmonton, Canada
| | - Jan Storek
- Division of Hematology, University of Calgary, Canada
| | - Caylib Durand
- Division of Rheumatology, University of Calgary, Canada
| | | | - Mohammed Osman
- Division of Rheumatology, University of Alberta, Edmonton, Canada.
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22
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Thakkar MK, Lee J, Meyer S, Chang VY. RecQ Helicase Somatic Alterations in Cancer. Front Mol Biosci 2022; 9:887758. [PMID: 35782872 PMCID: PMC9240438 DOI: 10.3389/fmolb.2022.887758] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
Named the “caretakers” of the genome, RecQ helicases function in several pathways to maintain genomic stability and repair DNA. This highly conserved family of enzymes consist of five different proteins in humans: RECQL1, BLM, WRN, RECQL4, and RECQL5. Biallelic germline mutations in BLM, WRN, and RECQL4 have been linked to rare cancer-predisposing syndromes. Emerging research has also implicated somatic alterations in RecQ helicases in a variety of cancers, including hematological malignancies, breast cancer, osteosarcoma, amongst others. These alterations in RecQ helicases, particularly overexpression, may lead to increased resistance of cancer cells to conventional chemotherapy. Downregulation of these proteins may allow for increased sensitivity to chemotherapy, and, therefore, may be important therapeutic targets. Here we provide a comprehensive review of our current understanding of the role of RecQ DNA helicases in cancer and discuss the potential therapeutic opportunities in targeting these helicases.
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Affiliation(s)
- Megha K. Thakkar
- Department of Pediatrics, Division of Pediatric Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Jamie Lee
- Department of Pediatrics, Division of Pediatric Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Stefan Meyer
- Division of Cancer Studies, University of Manchester, Manchester, United Kingdom
- Department of Pediatric Hematology Oncology, Royal Manchester Children’s Hospital and Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Vivian Y. Chang
- Department of Pediatrics, Division of Pediatric Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA, United States
- Childrens Discovery and Innovation Institute, UCLA, Los Angeles, CA, United States
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, United States
- *Correspondence: Vivian Y. Chang,
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23
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Fasano C, Lepore Signorile M, De Marco K, Forte G, Sanese P, Grossi V, Simone C. Identifying novel SMYD3 interactors on the trail of cancer hallmarks. Comput Struct Biotechnol J 2022; 20:1860-1875. [PMID: 35495117 PMCID: PMC9039736 DOI: 10.1016/j.csbj.2022.03.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 12/30/2022] Open
Abstract
SMYD3 overexpression in several human cancers highlights its crucial role in carcinogenesis. Nonetheless, SMYD3 specific activity in cancer development and progression is currently under debate. Taking advantage of a library of rare tripeptides, which we first tested for their in vitro binding affinity to SMYD3 and then used as in silico probes, we recently identified BRCA2, ATM, and CHK2 as direct SMYD3 interactors. To gain insight into novel SMYD3 cancer-related roles, here we performed a comprehensive in silico analysis to cluster all potential SMYD3-interacting proteins identified by screening the human proteome for the previously tested tripeptides, based on their involvement in cancer hallmarks. Remarkably, we identified mTOR, BLM, MET, AMPK, and p130 as new SMYD3 interactors implicated in cancer processes. Further studies are needed to characterize the functional mechanisms underlying these interactions. Still, these findings could be useful to devise novel therapeutic strategies based on the combined inhibition of SMYD3 and its newly identified molecular partners. Of note, our in silico methodology may be useful to search for unidentified interactors of other proteins of interest.
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Affiliation(s)
- Candida Fasano
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
- Corresponding authors at: Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy (C.Fasano, C. Simone).
| | - Martina Lepore Signorile
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
| | - Katia De Marco
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
| | - Giovanna Forte
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
| | - Paola Sanese
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
| | - Valentina Grossi
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
| | - Cristiano Simone
- Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy
- Medical Genetics, Department of Biomedical Sciences and Human Oncology (DIMO), University of Bari Aldo Moro, Bari, Italy
- Corresponding authors at: Medical Genetics, National Institute for Gastroenterology, IRCCS ‘S. de Bellis’ Research Hospital, Castellana Grotte (Ba), Italy (C.Fasano, C. Simone).
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Payliss BJ, Patel A, Sheppard AC, Wyatt HDM. Exploring the Structures and Functions of Macromolecular SLX4-Nuclease Complexes in Genome Stability. Front Genet 2021; 12:784167. [PMID: 34804132 PMCID: PMC8599992 DOI: 10.3389/fgene.2021.784167] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/21/2021] [Indexed: 12/15/2022] Open
Abstract
All organisms depend on the ability of cells to accurately duplicate and segregate DNA into progeny. However, DNA is frequently damaged by factors in the environment and from within cells. One of the most dangerous lesions is a DNA double-strand break. Unrepaired breaks are a major driving force for genome instability. Cells contain sophisticated DNA repair networks to counteract the harmful effects of genotoxic agents, thus safeguarding genome integrity. Homologous recombination is a high-fidelity, template-dependent DNA repair pathway essential for the accurate repair of DNA nicks, gaps and double-strand breaks. Accurate homologous recombination depends on the ability of cells to remove branched DNA structures that form during repair, which is achieved through the opposing actions of helicases and structure-selective endonucleases. This review focuses on a structure-selective endonuclease called SLX1-SLX4 and the macromolecular endonuclease complexes that assemble on the SLX4 scaffold. First, we discuss recent developments that illuminate the structure and biochemical properties of this somewhat atypical structure-selective endonuclease. We then summarize the multifaceted roles that are fulfilled by human SLX1-SLX4 and its associated endonucleases in homologous recombination and genome stability. Finally, we discuss recent work on SLX4-binding proteins that may represent integral components of these macromolecular nuclease complexes, emphasizing the structure and function of a protein called SLX4IP.
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Affiliation(s)
- Brandon J Payliss
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Ayushi Patel
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Anneka C Sheppard
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Haley D M Wyatt
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Canada Research Chairs Program, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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