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Gielecińska A, Kciuk M, Kołat D, Kruczkowska W, Kontek R. Polymorphisms of DNA Repair Genes in Thyroid Cancer. Int J Mol Sci 2024; 25:5995. [PMID: 38892180 PMCID: PMC11172789 DOI: 10.3390/ijms25115995] [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: 05/06/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
The incidence of thyroid cancer, one of the most common forms of endocrine cancer, is increasing rapidly worldwide in developed and developing countries. Various risk factors can increase susceptibility to thyroid cancer, but particular emphasis is put on the role of DNA repair genes, which have a significant impact on genome stability. Polymorphisms of these genes can increase the risk of developing thyroid cancer by affecting their function. In this article, we present a concise review on the most common polymorphisms of selected DNA repair genes that may influence the risk of thyroid cancer. We point out significant differences in the frequency of these polymorphisms between various populations and their potential relationship with susceptibility to the disease. A more complete understanding of these differences may lead to the development of effective prevention strategies and targeted therapies for thyroid cancer. Simultaneously, there is a need for further research on the role of polymorphisms of previously uninvestigated DNA repair genes in the context of thyroid cancer, which may contribute to filling the knowledge gaps on this subject.
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Affiliation(s)
- Adrianna Gielecińska
- Department of Molecular Biotechnology and Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland; (A.G.); (R.K.)
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
| | - Mateusz Kciuk
- Department of Molecular Biotechnology and Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland; (A.G.); (R.K.)
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
| | - Damian Kołat
- Department of Functional Genomics, Medical University of Lodz, 90-752 Lodz, Poland;
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, 90-136 Lodz, Poland
| | - Weronika Kruczkowska
- Faculty of Biomedical Sciences, Medical University of Lodz, Zeligowskiego 7/9, 90-752 Lodz, Poland;
| | - Renata Kontek
- Department of Molecular Biotechnology and Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland; (A.G.); (R.K.)
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Xie Z, Peng W, Li Q, Cheng W, Zhao X. Ethnicity-stratified analysis of the association between XRCC3 Thr241Met polymorphism and leukemia: an updated meta-analysis. BMC Med Genomics 2021; 14:229. [PMID: 34537044 PMCID: PMC8449464 DOI: 10.1186/s12920-021-01076-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/30/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Presently, whether X-ray repair cross complementing group 3 (XRCC3) Thr241Met polymorphism is correlated to leukemia risk remains controversial. Because of this reason, the objective of current study is to explore whether XRCC3 Thr241Met polymorphism confers risk to leukemia. METHODS Two independent authors systematically and comprehensively searched Pubmed, Embase, the Cochrane library, Google academic, China National Knowledge Infrastructure (CNKI). Search time is from database foundation to March 2021. RESULTS Overall, significant associations between leukemia risk and XRCC3 Thr241Met polymorphism were found in Caucasian population by allele contrast (T vs. C: OR 1.20, 95% CI 1.02-1.40), homozygote comparison (TT vs. CC: OR 1.35, 95% CI 1.05-1.73), and recessive genetic model (TT vs. TC/CC: OR 1.31, 95% CI 1.04-1.64). CONCLUSIONS The present meta-analysis suggests that the XRCC3 Thr241Met polymorphism may be a risk factor for leukemia in Caucasian population.
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Affiliation(s)
- Zhengjun Xie
- Department of Hematology, The Fifth Affiliated Hospital of Zunyi Medical University, Zhufeng Avenue 1439, Zhuhai, 519000, China.
| | - Wei Peng
- Department of Hematology, The Fifth Affiliated Hospital of Zunyi Medical University, Zhufeng Avenue 1439, Zhuhai, 519000, China
| | - Qiuhua Li
- Department of Hematology, The Fifth Affiliated Hospital of Zunyi Medical University, Zhufeng Avenue 1439, Zhuhai, 519000, China
| | - Wei Cheng
- Department of Hematology, The Fifth Affiliated Hospital of Zunyi Medical University, Zhufeng Avenue 1439, Zhuhai, 519000, China
| | - Xin Zhao
- Department of Hematology, The Fifth Affiliated Hospital of Zunyi Medical University, Zhufeng Avenue 1439, Zhuhai, 519000, China
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Grešner P, Jabłońska E, Gromadzińska J. Rad51 paralogs and the risk of unselected breast cancer: A case-control study. PLoS One 2020; 15:e0226976. [PMID: 31905201 PMCID: PMC6944361 DOI: 10.1371/journal.pone.0226976] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 12/10/2019] [Indexed: 11/18/2022] Open
Abstract
A case-control study was conducted in which we evaluated the association between genetic variability of DNA repair proteins belonging to the Rad51 family and breast cancer (BrC) risk. In the study, 132 female BrC cases and 189 healthy control females were genotyped for a total of 14 common single nucleotide polymorphisms (SNPs) within Rad51 and Xrcc3. Moreover, our previously reported Rad51C genetic data were involved to explore the nonlinear interactions among SNPs within the three genes and effect of such interactions on BrC risk. The rare rs5030789 genotype (-4601AA) in Rad51 was found to significantly decrease the BrC risk (OR = 0.5, 95% CI: 0.3-1.0, p<0.05). An interaction between this SNP, rs2619679 and rs2928140 (both in Rad51), was found to result in a two three-locus genotypes -4719AA/-4601AA/2972CG and -4719AT/-4601GA/2972CC, both of which were found to increase the risk of BrC (OR = 8.4, 95% CI: 1.8-38.6, p<0.0001), instead. Furthermore, rare Rad51 rs1801320 (135CC) and heterozygous Xrcc3 rs3212057 (10343GA) genotypes were found to respectively increase (OR = 10.6, 95% CI: 1.9-198, p<0.02) and decrease (OR = 0.0, 95% CI: 0.0-NA, p<0.05) the risk of BrC. Associations between these SNPs and BrC risk were further supported by outcomes of employed machine learning analyses. In Xrcc3, the 4541A/9685A haplotype was found to be significantly associated with reduced BrC risk (OR = 0.5; 95% CI: 0.3-0.9; p<0.05). Concluding, our study indicates a complex role of SNPs within Rad51 (especially rs5030789) and Xrcc3 in BrC, although their significance with respect to the disease needs to be further clarified.
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Affiliation(s)
- Peter Grešner
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Lodz, Poland
- * E-mail:
| | - Ewa Jabłońska
- Department of Molecular Genetics and Epigenetics, Nofer Institute of Occupational Medicine, Lodz, Poland
| | - Jolanta Gromadzińska
- Department of Biological and Environmental Monitoring, Nofer Institute of Occupational Medicine, Lodz, Poland
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Mohan M, Akula D, Dhillon A, Goyal A, Anindya R. Human RAD51 paralogue RAD51C fosters repair of alkylated DNA by interacting with the ALKBH3 demethylase. Nucleic Acids Res 2019; 47:11729-11745. [PMID: 31642493 PMCID: PMC7145530 DOI: 10.1093/nar/gkz938] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/02/2019] [Accepted: 10/09/2019] [Indexed: 12/31/2022] Open
Abstract
The integrity of our DNA is challenged daily by a variety of chemicals that cause DNA base alkylation. DNA alkylation repair is an essential cellular defence mechanism to prevent the cytotoxicity or mutagenesis from DNA alkylating chemicals. Human oxidative demethylase ALKBH3 is a central component of alkylation repair, especially from single-stranded DNA. However, the molecular mechanism of ALKBH3-mediated damage recognition and repair is less understood. We report that ALKBH3 has a direct protein-protein interaction with human RAD51 paralogue RAD51C. We also provide evidence that RAD51C-ALKBH3 interaction stimulates ALKBH3-mediated repair of methyl-adduct located within 3'-tailed DNA, which serves as a substrate for the RAD51 recombinase. We further show that the lack of RAD51C-ALKBH3 interaction affects ALKBH3 function in vitro and in vivo. Our data provide a molecular mechanism underlying upstream events of alkyl adduct recognition and repair by ALKBH3.
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Affiliation(s)
- Monisha Mohan
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, India
| | - Deepa Akula
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, India
| | - Arun Dhillon
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Roy Anindya
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, India
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Pelttari LM, Shimelis H, Toiminen H, Kvist A, Törngren T, Borg Å, Blomqvist C, Bützow R, Couch F, Aittomäki K, Nevanlinna H. Gene-panel testing of breast and ovarian cancer patients identifies a recurrent RAD51C duplication. Clin Genet 2018; 93:595-602. [PMID: 28802053 DOI: 10.1111/cge.13123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/20/2017] [Accepted: 08/08/2017] [Indexed: 11/24/2022]
Abstract
Gene-panel sequencing allows comprehensive analysis of multiple genes simultaneously and is now routinely used in clinical mutation testing of high-risk breast and ovarian cancer patients. However, only BRCA1 and BRCA2 are often analyzed also for large genomic changes. Here, we have analyzed 10 clinically relevant susceptibility genes in 95 breast or ovarian cancer patients with gene-panel sequencing including also copy number variants (CNV) analysis for genomic changes. We identified 12 different pathogenic BRCA1, BRCA2, TP53, PTEN, CHEK2, or RAD51C mutations in 18 of 95 patients (19%). BRCA1/2 mutations were observed in 8 patients (8.4%) and CHEK2 protein-truncating mutations in 7 patients (7.4%). In addition, we identified a novel duplication encompassing most of the RAD51C gene. We further genotyped the duplication in breast or ovarian cancer families (n = 1149), in unselected breast (n = 1729) and ovarian cancer cohorts (n = 553), and in population controls (n = 1273). Seven additional duplication carries were observed among cases but none among controls. The duplication associated with ovarian cancer risk (3/590 of all ovarian cancer patients, 0.5%, P = .032 compared with controls) and was found to represent a large fraction of all identified RAD51C mutations in the Finnish population. Our data emphasizes the importance of comprehensive mutation analysis including CNV detection in all the relevant genes.
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Affiliation(s)
- L M Pelttari
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - H Shimelis
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - H Toiminen
- Department of Clinical Genetics, University of Helsinki and HUSLAB, Helsinki University Hospital, Helsinki, Finland
| | - A Kvist
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, Sweden
| | - T Törngren
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, Sweden
| | - Å Borg
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, Sweden
| | - C Blomqvist
- Department of Oncology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - R Bützow
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - F Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - K Aittomäki
- Department of Clinical Genetics, University of Helsinki and HUSLAB, Helsinki University Hospital, Helsinki, Finland
| | - H Nevanlinna
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Prakash R, Zhang Y, Feng W, Jasin M. Homologous recombination and human health: the roles of BRCA1, BRCA2, and associated proteins. Cold Spring Harb Perspect Biol 2015; 7:a016600. [PMID: 25833843 DOI: 10.1101/cshperspect.a016600] [Citation(s) in RCA: 576] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Homologous recombination (HR) is a major pathway for the repair of DNA double-strand breaks in mammalian cells, the defining step of which is homologous strand exchange directed by the RAD51 protein. The physiological importance of HR is underscored by the observation of genomic instability in HR-deficient cells and, importantly, the association of cancer predisposition and developmental defects with mutations in HR genes. The tumor suppressors BRCA1 and BRCA2, key players at different stages of HR, are frequently mutated in familial breast and ovarian cancers. Other HR proteins, including PALB2 and RAD51 paralogs, have also been identified as tumor suppressors. This review summarizes recent findings on BRCA1, BRCA2, and associated proteins involved in human disease with an emphasis on their molecular roles and interactions.
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Affiliation(s)
- Rohit Prakash
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Yu Zhang
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Weiran Feng
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065 Louis V. Gerstner Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Maria Jasin
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065 Louis V. Gerstner Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, New York 10065
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Genetic variability of Xrcc3 and Rad51 modulates the risk of head and neck cancer. Gene 2012; 504:166-74. [PMID: 22613844 DOI: 10.1016/j.gene.2012.05.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 03/24/2012] [Accepted: 05/14/2012] [Indexed: 12/17/2022]
Abstract
A case-control study was conducted to analyze the possible associations between the head and neck cancer (HNC) risk and fourteen single nucleotide polymorphisms (SNPs) and haplotypes in Xrcc3 and Rad51 genes. This study involved 81 HNC cases and 111 healthy control subjects. A significant risk-increasing effect of rs3212057 (p.Arg94His) SNP in Xrcc3 (OR=6.6; p<0.01) was observed. On the other hand, risk-decreasing effect was found for rs5030789 (g.3997A>G) and rs1801321 (c.-60G>T) in 5' near gene and 5'UTR regions of Rad51, respectively (OR=0.3 and OR=0.2, p<0.05, respectively). Moreover, these effects were shown to be modulated by tobacco-smoking status and gene-gene interactions. Concluding, the genetic variability of Xrcc3 and/or Rad51 genes might be of relevance with respect to HNC risk.
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Clague J, Wilhoite G, Adamson A, Bailis A, Weitzel JN, Neuhausen SL. RAD51C germline mutations in breast and ovarian cancer cases from high-risk families. PLoS One 2011; 6:e25632. [PMID: 21980511 PMCID: PMC3182241 DOI: 10.1371/journal.pone.0025632] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 09/08/2011] [Indexed: 11/23/2022] Open
Abstract
BRCA1 and BRCA2 are the most well-known breast cancer susceptibility genes. Additional genes involved in DNA repair have been identified as predisposing to breast cancer. One such gene, RAD51C, is essential for homologous recombination repair. Several likely pathogenic RAD51C mutations have been identified in BRCA1- and BRCA2-negative breast and ovarian cancer families. We performed complete sequencing of RAD51C in germline DNA of 286 female breast and/or ovarian cancer cases with a family history of breast and ovarian cancers, who had previously tested negative for mutations in BRCA1 and BRCA2. We screened 133 breast cancer cases, 119 ovarian cancer cases, and 34 with both breast and ovarian cancers. Fifteen DNA sequence variants were identified; including four intronic, one 5′ UTR, one promoter, three synonymous, and six non-synonymous variants. None were truncating. The in-silico SIFT and Polyphen programs were used to predict possible pathogenicity of the six non-synonomous variants based on sequence conservation. G153D and T287A were predicted to be likely pathogenic. Two additional variants, A126T and R214C alter amino acids in important domains of the protein such that they could be pathogenic. Two-hybrid screening and immunoblot analyses were performed to assess the functionality of these four non-synonomous variants in yeast. The RAD51C-G153D protein displayed no detectable interaction with either XRCC3 or RAD51B, and RAD51C-R214C displayed significantly decreased interaction with both XRCC3 and RAD51B (p<0.001). Immunoblots of RAD51C-Gal4 activation domain fusion peptides showed protein levels of RAD51C-G153D and RAD51C-R214C that were 50% and 60% of the wild-type, respectively. Based on these data, the RAD51C-G153D variant is likely to be pathogenic, while the RAD51C- R214C variant is hypomorphic of uncertain pathogenicity. These results provide further support that RAD51C is a rare breast and ovarian cancer susceptibility gene.
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Affiliation(s)
- Jessica Clague
- Division of Clinical Cancer Genetics, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
| | - Greg Wilhoite
- Department of Population Sciences, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
| | - Aaron Adamson
- Department of Population Sciences, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
| | - Adam Bailis
- Department of Molecular and Cellular Biology, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
| | - Jeffrey N. Weitzel
- Division of Clinical Cancer Genetics, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
| | - Susan L. Neuhausen
- Department of Population Sciences, Beckman Research Institute at the City of Hope National Medical Center, Duarte, California, United States of America
- * E-mail:
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Sliwinski T, Walczak A, Przybylowska K, Rusin P, Pietruszewska W, Zielinska-Blizniewska H, Olszewski J, Morawiec-Sztandera A, Jendrzejczyk S, Mlynarski W, Majsterek I. Polymorphisms of the XRCC3 C722T and the RAD51 G135C genes and the risk of head and neck cancer in a Polish population. Exp Mol Pathol 2010; 89:358-66. [DOI: 10.1016/j.yexmp.2010.08.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Revised: 08/19/2010] [Accepted: 08/21/2010] [Indexed: 10/19/2022]
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Bastos HN, Antão MR, Silva SN, Azevedo AP, Manita I, Teixeira V, Pina JE, Gil OM, Ferreira TC, Limbert E, Rueff J, Gaspar JF. Association of polymorphisms in genes of the homologous recombination DNA repair pathway and thyroid cancer risk. Thyroid 2009; 19:1067-75. [PMID: 19772428 DOI: 10.1089/thy.2009.0099] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Ionizing radiation exposure has been pointed out as a risk factor for thyroid cancer. The double-strand breaks induced by this carcinogen are usually repaired by homologous recombination repair pathway, a pathway that includes several polymorphic genes. Since there is a scarcity of data about the involvement of these gene polymorphisms in thyroid cancer susceptibility, we carried out a case-control study in a Caucasian Portuguese population. METHODS We genotyped 109 patients and 217 controls for the XRCC3 T241M, XRCC2 R188H, NBS1 E185Q, and RAD51 Ex1-59G>T polymorphisms to evaluate their potential main effects on risk for this pathology. RESULTS The results obtained showed that for the RAD51 Ex1-59G>T polymorphism, the homozigosity for the variant allele was associated with an almost significant increase of the odds ratio (OR) (adjusted OR = 1.9; confidence interval 95%: 1.0-3.5; p = 0.057). Additionaly, when the XRCC3 T241M data were analyzed concerning the presence of at least one wild-type allele, we observed that individuals homozygous for the variant allele had a higher risk for thyroid cancer (adjusted OR = 2.0; confidence interval 95%: 1.1-3.6; p = 0.026). When the data were analyzed according to the number of RAD51 Ex1-59G>T and XRCC3 T241M variant alleles, the coexistence of three or more variant alleles in either gene was associated to a significant higher risk (three variant alleles: adjusted OR = 2.9, p = 0.036; four variant alleles: adjusted OR = 8.0, p = 0.006). CONCLUSIONS Since XRCC3 is involved in the assembly and stabilization of RAD51 protein multimers at double-strand break sites, we cannot exclude that the interaction of both polymorphisms can lead to a decreased DNA repair capacity and consequently increased risk for thyroid cancer.
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Affiliation(s)
- Helder Novais Bastos
- Department of Genetics, Faculty of Medical Sciences, New University of Lisbon, P-1349-008 Lisbon, Portugal
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Werbrouck J, De Ruyck K, Duprez F, Van Eijkeren M, Rietzschel E, Bekaert S, Vral A, De Neve W, Thierens H. Single-nucleotide polymorphisms in DNA double-strand break repair genes: Association with head and neck cancer and interaction with tobacco use and alcohol consumption. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2008; 656:74-81. [DOI: 10.1016/j.mrgentox.2008.07.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 07/08/2008] [Accepted: 07/21/2008] [Indexed: 10/21/2022]
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Rodrigue A, Lafrance M, Gauthier MC, McDonald D, Hendzel M, West SC, Jasin M, Masson JY. Interplay between human DNA repair proteins at a unique double-strand break in vivo. EMBO J 2006; 25:222-31. [PMID: 16395335 PMCID: PMC1356357 DOI: 10.1038/sj.emboj.7600914] [Citation(s) in RCA: 151] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Accepted: 11/22/2005] [Indexed: 12/22/2022] Open
Abstract
DNA repair by homologous recombination is essential for preserving genomic integrity. The RAD51 paralogs (RAD51B, RAD51C, RAD51D, XRCC2 and XRCC3) play important roles in this process. In this study, we show that human RAD51 interacts with RAD51C-XRCC3 or RAD51B-C-D-XRCC2. In addition to being critical for RAD51 focus formation, RAD51C localizes to DNA damage sites. Inhibition of RAD51C results in a decrease in cellular proliferation consistent with a role in repairing double-strand breaks (DSBs) that occur naturally. To monitor a single DNA repair event, we developed immunofluorescence and chromatin immunoprecipitation (ChIP) methods on human cells where a unique DSB can be created in vivo. Using this system, we observed a single focus of RAD51C, RAD51 and 53BP1, which colocalized with gamma-H2AX. ChIPs revealed that endogenous human RAD51, RAD51C, RAD51D, XRCC2, XRCC3 and MRE11 proteins are recruited in the S-G2 phase of the cell cycle, while Ku80 is recruited during G1. We propose that RAD51C ensures a tight regulation of RAD51 assembly during DSB repair and plays a direct role in repairing DSBs in vivo.
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Affiliation(s)
- Amélie Rodrigue
- Genome Stability Laboratory, Laval University Cancer Research Center, Québec city, Québec, Canada
| | - Matthieu Lafrance
- Genome Stability Laboratory, Laval University Cancer Research Center, Québec city, Québec, Canada
| | - Marie-Christine Gauthier
- Genome Stability Laboratory, Laval University Cancer Research Center, Québec city, Québec, Canada
| | - Darin McDonald
- Department of Oncology, Faculty of Medicine, University of Alberta and Cross Cancer Institute, Edmonton, Alberta, Canada
| | - Michael Hendzel
- Department of Oncology, Faculty of Medicine, University of Alberta and Cross Cancer Institute, Edmonton, Alberta, Canada
| | - Stephen C West
- Clare Hall Laboratories, Cancer Research UK, London Research Institute, South Mimms, Hertfordshire, UK
| | - Maria Jasin
- Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Jean-Yves Masson
- Genome Stability Laboratory, Laval University Cancer Research Center, Québec city, Québec, Canada
- Genome Stability Laboratory, Laval University Cancer Research Center, Hôtel-Dieu de Québec, 9 McMahon, Québec city, Québec, Canada G1R 2J6. Tel.: +1 418 525 4444 ext 15154; Fax: +1 418 691 5439; E-mail:
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Bleuyard JY, Gallego ME, Savigny F, White CI. Differing requirements for the Arabidopsis Rad51 paralogs in meiosis and DNA repair. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2005; 41:533-45. [PMID: 15686518 DOI: 10.1111/j.1365-313x.2004.02318.x] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In addition to the recombinase Rad51, vertebrates have five paralogs of Rad51, all members of the Rad51-dependent recombination pathway. These paralogs form two complexes (Rad51C/Xrcc3 and Rad51B/C/D/Xrcc2), which play roles in somatic recombination, DNA repair and chromosome stability. However, little is known of their possible involvement in meiosis, due to the inviability of the corresponding knockout mice. We have recently reported that the Arabidopsis homolog of one of these Rad51 paralogs (AtXrcc3) is involved in DNA repair and meiotic recombination and present here Arabidopsis lines carrying mutations in three other Rad51 paralogs (AtRad51B, AtRad51C and AtXrcc2). Disruption of any one of these paralogs confers hypersensitivity to the DNA cross-linking agent Mitomycin C, but not to gamma-irradiation. Moreover, the atrad51c-1 mutant is the only one of these to show meiotic defects similar to those of the atxrcc3 mutant, and thus only the Rad51C/Xrcc3 complex is required to achieve meiosis. These results support conservation of functions of the Rad51 paralogs between vertebrates and plants and differing requirements for the Rad51 paralogs in meiosis and DNA repair.
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Affiliation(s)
- Jean-Yves Bleuyard
- CNRS UMR6547, Université Blaise Pascal, 24, avenue des Landais, 63177 Aubière, France
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Yokoyama H, Sarai N, Kagawa W, Enomoto R, Shibata T, Kurumizaka H, Yokoyama S. Preferential binding to branched DNA strands and strand-annealing activity of the human Rad51B, Rad51C, Rad51D and Xrcc2 protein complex. Nucleic Acids Res 2004; 32:2556-65. [PMID: 15141025 PMCID: PMC419466 DOI: 10.1093/nar/gkh578] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The Rad51B, Rad51C, Rad51D and Xrcc2 proteins are Rad51 paralogs, and form a complex (BCDX2 complex) in mammalian cells. Mutant cells defective in any one of the Rad51-paralog genes exhibit spontaneous genomic instability and extreme sensitivity to DNA-damaging agents, due to inefficient recombinational repair. Therefore, the Rad51 paralogs play important roles in the maintenance of genomic integrity through recombinational repair. In the present study, we examined the DNA-binding preference of the human BCDX2 complex. Competitive DNA-binding assays using seven types of DNA substrates, single-stranded DNA (ssDNA), double-stranded DNA, 5'- and 3'-tailed duplexes, nicked duplex DNA, Y-shaped DNA and a synthetic Holliday junction, revealed that the BCDX2 complex preferentially bound to the two DNA substrates with branched structures (the Y-shaped DNA and the synthetic Holliday junction). Furthermore, the BCDX2 complex catalyzed the strand-annealing reaction between a long linear ssDNA (1.2 kb in length) and its complementary circular ssDNA. These properties of the BCDX2 complex may be important for its roles in the maintenance of chromosomal integrity.
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Affiliation(s)
- Hiroshi Yokoyama
- RIKEN Genomic Sciences Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
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Connell PP, Siddiqui N, Hoffman S, Kuang A, Khatipov EA, Weichselbaum RR, Bishop DK. A Hot Spot for RAD51C Interactions Revealed by a Peptide That Sensitizes Cells to Cisplatin. Cancer Res 2004; 64:3002-5. [PMID: 15126333 DOI: 10.1158/0008-5472.can-03-3608] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
DNA repair via the homologous recombination pathway requires the recombinase RAD51 and, in vertabrates, five RAD51 paralogs. The paralogs form two complexes in solution, a XRCC3/RAD51C heterodimer and a RAD51B/RAD51C/RAD51D/XRCC2 heterotetramer. Mutation of any one of the five paralog genes prevents subnuclear assembly of recombinase at damaged sites and renders cells 30-100 fold sensitive to DNA cross-linking drugs. Phage display was used to isolate peptides that bind the paralog XRCC3. Sequences of binding peptides showed similarity to residues 14-25 of RAD51C protein. Point mutations in this region of RAD51C altered its interaction with both XRCC3 and RAD51B in a two-hybrid system. A synthetic peptide composed of residues 14-25 of RAD51C fused to a membrane transduction sequence [protein transduction domain 4 (PTD4)], inhibited subnuclear assembly of RAD51 recombinase, and sensitized Chinese hamster ovary cells to cisplatin when added to growth medium. These results suggest that residues 14-25 of RAD51C contribute to a "hot spot" used in both XRCC3-RAD51C and RAD51B-RAD51C interactions. Peptide-based inhibition of homologous recombination may prove useful for improving the efficacy of existing cancer therapies.
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Affiliation(s)
- Philip P Connell
- Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois 60637, USA
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Miller KA, Sawicka D, Barsky D, Albala JS. Domain mapping of the Rad51 paralog protein complexes. Nucleic Acids Res 2004; 32:169-78. [PMID: 14704354 PMCID: PMC373258 DOI: 10.1093/nar/gkg925] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The five human Rad51 paralogs are suggested to play an important role in the maintenance of genome stability through their function in DNA double-strand break repair. These proteins have been found to form two distinct complexes in vivo, Rad51B-Rad51C-Rad51D-Xrcc2 (BCDX2) and Rad51C-Xrcc3 (CX3). Based on the recent Pyrococcus furiosus Rad51 structure, we have used homology modeling to design deletion mutants of the Rad51 paralogs. The models of the human Rad51B, Rad51C, Xrcc3 and murine Rad51D (mRad51D) proteins reveal distinct N-terminal and C-terminal domains connected by a linker region. Using yeast two-hybrid and co-immunoprecipitation techniques, we have demonstrated that a fragment of Rad51B containing amino acid residues 1-75 interacts with the C-terminus and linker of Rad51C, residues 79-376, and this region of Rad51C also interacts with mRad51D and Xrcc3. We have also determined that the N-terminal domain of mRad51D, residues 4-77, binds to Xrcc2 while the C-terminal domain of mRad51D, residues 77-328, binds Rad51C. By this, we have identified the binding domains of the BCDX2 and CX3 complexes to further characterize the interaction of these proteins and propose a scheme for the three-dimensional architecture of the BCDX2 and CX3 paralog complexes.
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Affiliation(s)
- Kristi A Miller
- Biology and Biotechnology Research Program, Lawrence Livermore National Laboratory, 7000 East Avenue, L-448, Livermore, CA 94550, USA
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