201
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Jin H, Roy U, Lee G, Schärer OD, Cho Y. Structural mechanism of DNA interstrand cross-link unhooking by the bacterial FAN1 nuclease. J Biol Chem 2018; 293:6482-6496. [PMID: 29514982 PMCID: PMC5925792 DOI: 10.1074/jbc.ra118.002171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/05/2018] [Indexed: 01/04/2023] Open
Abstract
DNA interstrand cross-links (ICLs) block the progress of the replication and transcription machineries and can weaken chromosomal stability, resulting in various diseases. FANCD2-FANCI-associated nuclease (FAN1) is a conserved structure-specific nuclease that unhooks DNA ICLs independently of the Fanconi anemia pathway. Recent structural studies have proposed two different mechanistic features for ICL unhooking by human FAN1: a specific basic pocket that recognizes the terminal phosphate of a 1-nucleotide (nt) 5' flap or FAN1 dimerization. Herein, we show that despite lacking these features, Pseudomonas aeruginosa FAN1 (PaFAN1) cleaves substrates at ∼3-nt intervals and resolves ICLs. Crystal structures of PaFAN1 bound to various DNA substrates revealed that its conserved basic Arg/Lys patch comprising Arg-228 and Lys-260 recognizes phosphate groups near the 5' terminus of a DNA substrate with a 1-nt flap or a nick. Substitution of Lys-260 did not affect PaFAN1's initial endonuclease activity but significantly decreased its subsequent exonuclease activity and ICL unhooking. The Arg/Lys patch also interacted with phosphates at a 3-nt gap, and this interaction could drive movement of the scissile phosphates into the PaFAN1-active site. In human FAN1, the ICL-resolving activity was not affected by individual disruption of the Arg/Lys patch or basic pocket. However, simultaneous substitution of both FAN1 regions significantly reduced its ICL-resolving activity, suggesting that these two basic regions play a complementary role in ICL repair. On the basis of these findings, we propose a conserved role for two basic regions in FAN1 to guide ICL unhooking and to maintain genomic stability.
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Affiliation(s)
- Hyeonseok Jin
- From the Department of Life Science, Pohang University of Science and Technology, Pohang, Kyungbook 37673, South Korea
| | - Upasana Roy
- the Departments of Chemistry and Pharmacological Sciences, Stony Brook University, Stony Brook, New York 11794
| | - Gwangrog Lee
- the Department of Biology, Gwangju Institute of Science and Technology, Gwangju 61005, South Korea
| | - Orlando D Schärer
- the Departments of Chemistry and Pharmacological Sciences, Stony Brook University, Stony Brook, New York 11794
- the Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, South Korea, and
- the Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan 44919, South Korea
| | - Yunje Cho
- From the Department of Life Science, Pohang University of Science and Technology, Pohang, Kyungbook 37673, South Korea,
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202
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Willis J, Epperly MW, Fisher R, Zhang X, Shields D, Hou W, Wang H, Li S, Wipf P, Parmar K, Guinan E, Steinman J, Greenberger JS. Amelioration of Head and Neck Radiation-Induced Mucositis and Distant Marrow Suppression in Fanca -/- and Fancg -/- Mice by Intraoral Administration of GS-Nitroxide (JP4-039). Radiat Res 2018; 189:560-578. [PMID: 29584588 DOI: 10.1667/rr14878.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Squamous cell carcinomas of the head and neck are appearing with increased frequency in both marrow transplanted and non-transplanted Fanconi anemia (FA) patients. FA patients commonly display radiosensitivity of epithelial tissues, complicating effective radiotherapy. Fancd2-/- mice (C57BL/6J and 129/Sv background) demonstrate epithelial tissue sensitivity to single-fraction or fractionated irradiation to the head and neck and distant marrow suppression (abscopal effect), both ameliorated by intraoral administration of the mitochondrial-targeted antioxidant, GS-nitroxide, JP4-039. We now report that mice of two other FA genotypes, Fancg-/- (B6) and the most prevalent human genotype Fanca-/- (129/Sv), also demonstrate: 1. reduced longevity of hematopoiesis in long-term bone marrow cultures; 2. radiosensitivity of bone marrow stromal cell lines; and 3. head and neck radiation-induced severe mucositis and abscopal suppression of distant marrow hematopoiesis. Intraoral administration of JP4-039/F15, but not non-mitochondrial-targeted 4-amino-Tempo/F15 or F15 alone, prior to each radiation treatment ameliorated both local and abscopal radiation effects. Head and neck irradiated TGF-β-resistant SMAD3-/- (129/Sv) mice and double-knockout SMAD3-/- Fancd2-/- (129/Sv) mice treated daily with TGF-β receptor antagonist, LY364947, still displayed abscopal bone marrow suppression, implicating a non-TGF-β mechanism. Thus, amelioration of both local normal tissue radiosensitivity and distant marrow suppression by intraoral administration of JP4-039 in Fancg-/- and Fanca-/- mice supports a clinical trial of this locally administered normal tissue radioprotector and mitigator during head and neck irradiation in FA patients.
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Affiliation(s)
- John Willis
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Michael W Epperly
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Renee Fisher
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Xichen Zhang
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Donna Shields
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Wen Hou
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Hong Wang
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Song Li
- b Departments of Pharmaceutical Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Peter Wipf
- c Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Kalindi Parmar
- d Dana Farber Cancer Institute, Boston, Massachusetts 02115
| | - Eva Guinan
- d Dana Farber Cancer Institute, Boston, Massachusetts 02115
| | - Justin Steinman
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
| | - Joel S Greenberger
- a Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15213
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203
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Zhao X, Brusadelli MG, Sauter S, Butsch Kovacic M, Zhang W, Romick-Rosendale LE, Lambert PF, Setchell KDR, Wells SI. Lipidomic Profiling Links the Fanconi Anemia Pathway to Glycosphingolipid Metabolism in Head and Neck Cancer Cells. Clin Cancer Res 2018. [PMID: 29530934 DOI: 10.1158/1078-0432.ccr-17-3686] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Purpose: Mutations in Fanconi anemia (FA) genes are common in sporadic squamous cell carcinoma of the head and neck (HNSCC), and we have previously demonstrated that FA pathway depletion in HNSCC cell lines stimulates invasion. The goal of our studies was to use a systems approach in order to define FA pathway-dependent lipid metabolism and to extract lipid-based signatures and effectors of invasion in FA-deficient cells.Experimental Design: We subjected FA-isogenic HNSCC keratinocyte cell lines to untargeted and targeted lipidomics analyses to discover novel biomarkers and candidate therapeutic targets in FA-deficient cells. Cellular invasion assays were carried out in the presence and absence of N-butyldeoxynojirimycin (NB-DNJ), a biosynthetic inhibitor of the newly identified class of gangliosides, to investigate the requirement of ganglioside upregulation in FA-deficient HNSCC cells.Results: The most notable element of the lipid profiling results was a consistent elevation of glycosphingolipids, and particularly the accumulation of gangliosides. Conversely, repression of this same class of lipids was observed upon genetic correction of FA patient-derived HNSCC cells. Functional studies demonstrate that ganglioside upregulation is required for HNSCC cell invasion driven by FA pathway loss. The motility of nontransformed keratinocytes in response to FA loss displayed a similar dependence, thus supporting early and late roles for the FA pathway in controlling keratinocyte invasion through lipid regulation.Conclusions: Elevation of glycosphingolipids including the ganglioside GM3 in response to FA loss stimulates invasive characteristics of immortalized and transformed keratinocytes. An inhibitor of glycosphingolipid biosynthesis NB-DNJ attenuates invasive characteristics of FA-deficient HNSCC cells. Clin Cancer Res; 24(11); 2700-9. ©2018 AACR.
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Affiliation(s)
- Xueheng Zhao
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Marion G Brusadelli
- Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Sharon Sauter
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Melinda Butsch Kovacic
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Wujuan Zhang
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Lindsey E Romick-Rosendale
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Paul F Lambert
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Kenneth D R Setchell
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
| | - Susanne I Wells
- Division of Oncology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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204
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Hasan S, Naqvi AR, Rizvi A. Transcriptional Regulation of Emergency Granulopoiesis in Leukemia. Front Immunol 2018; 9:481. [PMID: 29593731 PMCID: PMC5858521 DOI: 10.3389/fimmu.2018.00481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 02/23/2018] [Indexed: 12/16/2022] Open
Abstract
Neutropenic conditions are prevalent in leukemia patients and are often associated with increased susceptibility to infections. In fact, emergency granulopoiesis (EG), a process regulating neutrophil homeostasis in inflammatory conditions and infections, may occur improperly in leukemic conditions, leading to reduced neutrophil counts. Unfortunately, the mechanisms central to dysfunctional EG remain understudied in both leukemia patients and leukemic mouse models. However, despite no direct studies on EG response in leukemia are reported, recently certain transcription factors (TFs) have been found to function at the crossroads of leukemia and EG. In this review, we present an update on TFs that can potentially govern the fate of EG in leukemia. Transcriptional control of Fanconi DNA repair pathway genes is also highlighted, as well as the newly discovered role of Fanconi proteins in innate immune response and EG. Identifying the TFs regulating EG in leukemia and dissecting their underlying mechanisms may facilitate the discovery of therapeutic drugs for the treatment of neutropenia.
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Affiliation(s)
- Shirin Hasan
- Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Afsar R Naqvi
- Department of Periodontics, University of Illinois at Chicago, Chicago, IL, United States
| | - Asim Rizvi
- Department of Biochemistry, Aligarh Muslim University, Aligarh, India
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205
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Panahi Y, Fattahi A, Nejabati HR, Abroon S, Latifi Z, Akbarzadeh A, Ghasemnejad T. DNA repair mechanisms in response to genotoxicity of warfare agent sulfur mustard. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 58:230-236. [PMID: 29428683 DOI: 10.1016/j.etap.2018.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 01/27/2018] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Sulfur mustard (SM) is an alkylating agent that causes severe damages to the skin, eyes, and the respiratory system. DNA alkylation is one of the most critical lesions that could lead to monoadducts and cross-links, as well as DNA strand breaks. In response to these adducts, cells initiate a series of reactions to recruit specific DNA repair pathways. The main DNA repair pathways in human cells, which could be involved in the DNA SM-induced DNA damages, are base excision repair (BER), nucleotide excision repair (NER), homologous recombination (HR) and non-homologous end joining (NHEJ). There is, thus, a need for a short review to clarify which damage caused by SM is repaired by which repair pathway. Increasing our knowledge about different DNA repair mechanisms following SM exposure would lay the first step for developing new therapeutic agents to treat people exposed to SM. In this review, we describe the major DNA repair pathways, according to the DNA adducts that can be caused by SM.
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Affiliation(s)
- Yunes Panahi
- Chemical Injuries Research Center System Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Amir Fattahi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Reza Nejabati
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sina Abroon
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Latifi
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Tohid Ghasemnejad
- Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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206
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Federico MB, Campodónico P, Paviolo NS, Gottifredi V. Beyond interstrand crosslinks repair: contribution of FANCD2 and other Fanconi Anemia proteins to the replication of DNA. Mutat Res 2018; 808:83-92. [PMID: 29031493 DOI: 10.1016/j.mrfmmm.2017.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/11/2017] [Indexed: 06/07/2023]
Abstract
Biallelic mutations of FANCD2 and other components of the Fanconi Anemia (FA) pathway cause a disease characterized by bone marrow failure, cancer predisposition and a striking sensitivity to agents that induce crosslinks between the two complementary DNA strands (inter-strand crosslinks-ICL). Such genotoxins were used to characterize the contribution of the FA pathway to the genomic stability of cells, thus unravelling the biological relevance of ICL repair in the context of the disease. Notwithstanding this, whether the defect in ICL repair as the sole trigger for the multiple physiological alterations observed in FA patients is still under investigation. Remarkably, ICL-independent functions of FANCD2 and other components of the FA pathway were recently reported. FANCD2 contributes to the processing of very challenging double strand ends (DSEs: one ended Double Strand Breaks -DSBs- created during DNA replication). Other ICL-independent functions of FANCD2 include prevention of DNA breakage at stalled replication forks and facilitation of chromosome segregation at the end of M phase. The current understanding of replication-associated functions of FANCD2 and its relevance for the survival of genomically stable cells is herein discussed.
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Affiliation(s)
- Maria B Federico
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Paola Campodónico
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Natalia S Paviolo
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Vanesa Gottifredi
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
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207
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Che R, Zhang J, Nepal M, Han B, Fei P. Multifaceted Fanconi Anemia Signaling. Trends Genet 2018; 34:171-183. [PMID: 29254745 PMCID: PMC5858900 DOI: 10.1016/j.tig.2017.11.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/28/2017] [Indexed: 01/26/2023]
Abstract
In 1927 Guido Fanconi described a hereditary condition presenting panmyelopathy accompanied by short stature and hyperpigmentation, now better known as Fanconi anemia (FA). With this discovery the genetic and molecular basis underlying FA has emerged as a field of great interest. FA signaling is crucial in the DNA damage response (DDR) to mediate the repair of damaged DNA. This has attracted a diverse range of investigators, especially those interested in aging and cancer. However, recent evidence suggests FA signaling also regulates functions outside the DDR, with implications for many other frontiers of research. We discuss here the characteristics of FA functions and expand upon current perspectives regarding the genetics of FA, indicating that FA plays a role in a myriad of molecular and cellular processes.
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Affiliation(s)
- Raymond Che
- University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA; Graduate Program of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, HI, USA
| | - Jun Zhang
- Department of Laboratory Medicine and Pathology, Mayo Clinic Foundation, USA
| | - Manoj Nepal
- University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA; Graduate Program of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, HI, USA
| | - Bing Han
- University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA
| | - Peiwen Fei
- University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA; Graduate Program of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, HI, USA.
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208
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Li X, Wilson AF, Du W, Pang Q. Cell-Cycle-Specific Function of p53 in Fanconi Anemia Hematopoietic Stem and Progenitor Cell Proliferation. Stem Cell Reports 2018; 10:339-346. [PMID: 29307578 PMCID: PMC5830889 DOI: 10.1016/j.stemcr.2017.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 12/18/2022] Open
Abstract
Overactive p53 has been proposed as an important pathophysiological factor for bone marrow failure syndromes, including Fanconi anemia (FA). Here, we report a p53-dependent effect on hematopoietic stem and progenitor cell (HSPC) proliferation in mice deficient for the FA gene Fanca. Deletion of p53 in Fanca-/- mice leads to replicative exhaustion of the hematopoietic stem cell (HSC) in transplant recipients. Using Fanca-/- HSCs expressing the separation-of-function mutant p53515C transgene, which selectively impairs the p53 function in apoptosis but keeps its cell-cycle checkpoint activities intact, we show that the p53 cell-cycle function is specifically required for the regulation of Fanca-/- HSC proliferation. Our results demonstrate that p53 plays a compensatory role in preventing FA HSCs from replicative exhaustion and suggest a cautious approach to manipulating p53 signaling as a therapeutic utility in FA.
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Affiliation(s)
- Xiaoli Li
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Andrew F Wilson
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Wei Du
- Department of Pharmaceutical Sciences, West Virginia University School of Pharmacy, Morgantown, WV 26506, USA.
| | - Qishen Pang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.
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209
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Kurzbauer MT, Pradillo M, Kerzendorfer C, Sims J, Ladurner R, Oliver C, Janisiw MP, Mosiolek M, Schweizer D, Copenhaver GP, Schlögelhofer P. Arabidopsis thaliana FANCD2 Promotes Meiotic Crossover Formation. THE PLANT CELL 2018; 30:415-428. [PMID: 29352063 PMCID: PMC5868695 DOI: 10.1105/tpc.17.00745] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/06/2017] [Accepted: 01/17/2018] [Indexed: 05/18/2023]
Abstract
Fanconi anemia (FA) is a human autosomal recessive disorder characterized by chromosomal instability, developmental pathologies, predisposition to cancer, and reduced fertility. So far, 19 genes have been implicated in FA, most of them involved in DNA repair. Some are conserved across higher eukaryotes, including plants. The Arabidopsis thaliana genome encodes a homolog of the Fanconi anemia D2 gene (FANCD2) whose function in DNA repair is not yet fully understood. Here, we provide evidence that AtFANCD2 is required for meiotic homologous recombination. Meiosis is a specialized cell division that ensures reduction of genomic content by half and DNA exchange between homologous chromosomes via crossovers (COs) prior to gamete formation. In plants, a mutation in AtFANCD2 results in a 14% reduction of CO numbers. Genetic analysis demonstrated that AtFANCD2 acts in parallel to both MUTS HOMOLOG4 (AtMSH4), known for its role in promoting interfering COs and MMS AND UV SENSITIVE81 (AtMUS81), known for its role in the formation of noninterfering COs. AtFANCD2 promotes noninterfering COs in a MUS81-independent manner and is therefore part of an uncharted meiotic CO-promoting mechanism, in addition to those described previously.
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Affiliation(s)
- Marie-Therese Kurzbauer
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
| | - Mónica Pradillo
- Departamento de Genética, Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Claudia Kerzendorfer
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
| | - Jason Sims
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
| | - Rene Ladurner
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria
| | - Cecilia Oliver
- Departamento de Genética, Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Michael Peter Janisiw
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
| | - Magdalena Mosiolek
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria
| | - Dieter Schweizer
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria
| | - Gregory P Copenhaver
- Department of Biology and the Integrative Program for Biological and Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3280
| | - Peter Schlögelhofer
- Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Vienna Biocenter, 1030 Vienna, Austria
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210
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Kimble DC, Lach FP, Gregg SQ, Donovan FX, Flynn EK, Kamat A, Young A, Vemulapalli M, Thomas JW, Mullikin JC, Auerbach AD, Smogorzewska A, Chandrasekharappa SC. A comprehensive approach to identification of pathogenic FANCA variants in Fanconi anemia patients and their families. Hum Mutat 2018; 39:237-254. [PMID: 29098742 PMCID: PMC5762269 DOI: 10.1002/humu.23366] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 10/20/2017] [Accepted: 10/22/2017] [Indexed: 11/11/2022]
Abstract
Fanconi anemia (FA) is a rare recessive DNA repair deficiency resulting from mutations in one of at least 22 genes. Two-thirds of FA families harbor mutations in FANCA. To genotype patients in the International Fanconi Anemia Registry (IFAR) we employed multiple methodologies, screening 216 families for FANCA mutations. We describe identification of 57 large deletions and 261 sequence variants, in 159 families. All but seven families harbored distinct combinations of two mutations demonstrating high heterogeneity. Pathogenicity of the 18 novel missense variants was analyzed functionally by determining the ability of the mutant cDNA to improve the survival of a FANCA-null cell line when treated with MMC. Overexpressed pathogenic missense variants were found to reside in the cytoplasm, and nonpathogenic in the nucleus. RNA analysis demonstrated that two variants (c.522G > C and c.1565A > G), predicted to encode missense variants, which were determined to be nonpathogenic by a functional assay, caused skipping of exons 5 and 16, respectively, and are most likely pathogenic. We report 48 novel FANCA sequence variants. Defining both variants in a large patient cohort is a major step toward cataloging all FANCA variants, and permitting studies of genotype-phenotype correlations.
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Affiliation(s)
- Danielle C Kimble
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland
| | - Francis P Lach
- Laboratory of Genome Maintenance, The Rockefeller University, New York, New York
| | - Siobhan Q Gregg
- Laboratory of Genome Maintenance, The Rockefeller University, New York, New York
| | - Frank X Donovan
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland
| | - Elizabeth K Flynn
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland
| | - Aparna Kamat
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland
| | - Alice Young
- NIH Intramural Sequencing Center, National Human Genome Research Institute, Bethesda, Maryland
| | - Meghana Vemulapalli
- NIH Intramural Sequencing Center, National Human Genome Research Institute, Bethesda, Maryland
| | - James W Thomas
- NIH Intramural Sequencing Center, National Human Genome Research Institute, Bethesda, Maryland
| | - James C Mullikin
- NIH Intramural Sequencing Center, National Human Genome Research Institute, Bethesda, Maryland
| | - Arleen D Auerbach
- Human Genetics and Hematology Program, The Rockefeller University, New York, New York
| | - Agata Smogorzewska
- Laboratory of Genome Maintenance, The Rockefeller University, New York, New York
| | - Settara C Chandrasekharappa
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, Bethesda, Maryland
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211
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Risk of Human Papillomavirus Infection in Cancer-Prone Individuals: What We Know. Viruses 2018; 10:v10010047. [PMID: 29361695 PMCID: PMC5795460 DOI: 10.3390/v10010047] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 02/06/2023] Open
Abstract
Human papillomavirus (HPV) infections cause a significant proportion of cancers worldwide, predominantly squamous cell carcinomas (SCC) of the mucosas and skin. High-risk HPV types are associated with SCCs of the anogenital and oropharyngeal tract. HPV oncogene activities and the biology of SCCs have been intensely studied in laboratory models and humans. What remains largely unknown are host tissue and immune-related factors that determine an individual's susceptibility to infection and/or carcinogenesis. Such susceptibility factors could serve to identify those at greatest risk and spark individually tailored HPV and SCC prevention efforts. Fanconi anemia (FA) is an inherited DNA repair disorder that is in part characterized by extreme susceptibility to SCCs. An increased prevalence of HPV has been reported in affected individuals, and molecular and functional connections between FA, SCC, and HPV were established in laboratory models. However, the presence of HPV in some human FA tumors is controversial, and the extent of the etiological connections remains to be established. Herein, we discuss cellular, immunological, and phenotypic features of FA, placed into the context of HPV pathogenesis. The goal is to highlight this orphan disease as a unique model system to uncover host genetic and molecular HPV features, as well as SCC susceptibility factors.
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Popp I, Punekar M, Telford N, Stivaros S, Chandler K, Minnis M, Castleton A, Higham C, Hopewell L, Gareth Evans D, Raams A, Theil AF, Meyer S, Schindler D. Fanconi anemia with sun-sensitivity caused by a Xeroderma pigmentosum-associated missense mutation in XPF. BMC MEDICAL GENETICS 2018; 19:7. [PMID: 29325523 PMCID: PMC5765604 DOI: 10.1186/s12881-018-0520-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 01/03/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Fanconi anemia (FA) is an inherited genomic instability disorder with congenital and developmental abnormalities, bone marrow failure and predisposition to cancer early in life, and cellular sensitivity to DNA interstrand crosslinks. CASE PRESENTATION A fifty-one-year old female patient, initially diagnosed with FA in childhood on the basis of classic features and increased chromosomal breakage, and remarkable sun-sensitivity is described. She only ever had mild haematological abnormalities and no history of malignancy. To identify and characterise the genetic defect in this lady, who is one of the oldest reported FA patients, we used whole-exome sequencing for identification of causative mutations, and functionally characterized the cellular phenotype. Detection of the novel splice site mutation c.793-2A > G and the previously described missense mutation c.1765C > T (p.Arg589Trp) in XPF/ERCC4/FANCQ assign her as the third individual of complementation group FA-Q. Ectopic expression of wildtype, but not mutant, XPF/ERCC4/FANCQ, in patient-derived fibroblasts rescued cellular resistance to DNA interstrand-crosslinking agents. Patient derived FA-Q cells showed impaired nuclear excision repair capacity. However, mutated XPF/ERCC4/FANCQ protein in our patient's cells, as in the two other patients with FA-Q, was detectable on chromatin, in contrast to XP-F cells, where missense-mutant protein failed to properly translocate to the nucleus. CONCLUSIONS Patients with FA characteristics and UV sensitivity should be tested for mutations in XPF/ERCC4/FANCQ. The missense mutation p.Arg589Trp was previously detected in patients diagnosed with Xeroderma pigmentosum or Cockayne syndrome. Hence, phenotypic manifestations associated with this XPF/ERCC4/ FANCQ mutation are highly variable.
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Affiliation(s)
- Isabell Popp
- Department of Human Genetics, Biozentrum, University of Wurzburg, Am Hubland, 97074, Wurzburg, Germany
| | - Maqsood Punekar
- Lancashire Teaching Hospitals NHS Foundation Trust, Preston, UK
| | - Nick Telford
- Oncology Cytogenetics, The Christie NHS Foundation Trust, Manchester, UK
| | - Stavros Stivaros
- Institute of Population Health, Centre for Imaging Sciences, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Kate Chandler
- Manchester Academic Health Science Centre, Manchester, UK.,Department of Genetic Medicine, St Mary's Hospital, Central Manchester Foundation Trust, Manchester, UK
| | - Meenakshi Minnis
- Manchester Academic Health Science Centre, Manchester, UK.,Department of Genetic Medicine, St Mary's Hospital, Central Manchester Foundation Trust, Manchester, UK
| | - Anna Castleton
- Department of Paediatric and Adolescent Oncology, The Christie NHS Foundation Trust, Manchester, UK
| | - Claire Higham
- Department of Paediatric and Adolescent Oncology, The Christie NHS Foundation Trust, Manchester, UK.,Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
| | - Louise Hopewell
- Department of Paediatric and Adolescent Oncology, The Christie NHS Foundation Trust, Manchester, UK
| | - D Gareth Evans
- Department of Genetic Medicine, St Mary's Hospital, Central Manchester Foundation Trust, Manchester, UK
| | - Anja Raams
- Department of Molecular Genetics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Arjan F Theil
- Department of Molecular Genetics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Stefan Meyer
- Manchester Academic Health Science Centre, Manchester, UK. .,Department of Paediatric and Adolescent Oncology, The Christie NHS Foundation Trust, Manchester, UK. .,Stem Cell and Leukaemia Proteomics Laboratory, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK. .,Department of Paediatric and Adolescent Oncology, Royal Manchester Children's Hospital, Manchester, UK. .,Paediatric and Adolescent Oncology, Division of Cancer Sciences, University of Manchester, c/o Young Oncology Unit, Christie Hospital, Wilmslow Road, Manchester, M20 6XB, UK.
| | - Detlev Schindler
- Department of Human Genetics, Biozentrum, University of Wurzburg, Am Hubland, 97074, Wurzburg, Germany.
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213
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Wang J, Jo U, Joo SY, Kim H. FBW7 regulates DNA interstrand cross-link repair by modulating FAAP20 degradation. Oncotarget 2018; 7:35724-35740. [PMID: 27232758 PMCID: PMC5094957 DOI: 10.18632/oncotarget.9595] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/16/2016] [Indexed: 12/13/2022] Open
Abstract
Mutations that deregulate protein degradation lead to human malignancies. The SCF ubiquitin E3 ligase complex degrades key oncogenic regulators, thereby limiting their oncogenic potential. FBW7 is a substrate recognition subunit of SCFFBW7 and is among the most commonly mutated ubiquitin-proteasome system proteins in cancer. FBW7-mutated cancer cells display increased genome instability, but the molecular mechanism by which FBW7 preserves genome integrity remains elusive. Here, we demonstrate that SCFFBW7 regulates the stability of FAAP20, a critical component of the Fanconi anemia (FA) DNA interstrand cross-link (ICL) repair pathway. Phosphorylation of the FAAP20 degron motif by GSK3β provides a platform for recognition and polyubiquitination of FAAP20 by FBW7, and its subsequent degradation by the proteasome. Accordingly, enhanced GSK3β-FBW7 signaling disrupts the FA pathway. In cells expressing non-phosphorylatable FAAP20 mutant, the turnover of its binding partner, FANCA, is deregulated in the chromatin during DNA ICL repair, and the FA pathway is compromised. We propose that FAAP20 degradation, which is prompted by its phosphorylation, controls the dynamics of the FA core complex required for completing DNA ICL repair. Together, this study provides insights into how FBW7-mediated proteolysis regulates genome stability and how its deregulation is associated with tumorigenesis.
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Affiliation(s)
- Jingming Wang
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - Ukhyun Jo
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - So Young Joo
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - Hyungjin Kim
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA
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214
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Zhang Y, Chang JF, Sun J, Chen L, Yang XM, Tang HY, Jing YY, Kang X, He ZM, Wu JY, Wei HM, Wang DL, Xu RG, Zhu RB, Shen Y, Zeng SY, Wang C, Liu KN, Zhang Y, Mao ZY, Jiang CZ, Sun FL. Histone H3K27 methylation is required for NHEJ and genome stability by modulating the dynamics of FANCD2 on chromatin. J Cell Sci 2018; 131:jcs.215525. [PMID: 29760279 DOI: 10.1242/jcs.215525] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 04/24/2018] [Indexed: 12/13/2022] Open
Abstract
Dysregulation of homeostatic balance in di- and tri-methyl H3K27 levels or that caused by mis-sense mutations of histone H3 (H3K27M) was reported to be associated with various types of cancers. In this study, we found that reduction in H3K27me2/3 caused by H3.1K27M, a mutation of H3 variants found in DIPG patients, dramatically attenuated the presence of 53BP1 foci and NHEJ repair capability in HDF cells. H3.1K27M cells showed increased rates of genomic insertions/deletions (In/Dels) and copy number variations (CNVs), as well as augmented p53-dependent apoptotic cells. We further showed that both hypo-H3K27me2/3 and H3.1K27M interacted with FANCD2, a central player to orchestrate DNA repair pathway choice. H3.1K27M triggered an accumulation of FANCD2 on chromatin, supporting the interaction between H3.1K27M and FANCD2. Most interestingly, knock-down of FANCD2 in H3.1K27M cells recovered the number of 53BP1 foci, NHEJ efficiency and apoptosis rate. Although these findings in HDF cells may differ from the case of endogenous H3.1K27M mutant regulation in the specific tumor context of DIPG, our results suggest a new model by which H3K27me2/3 facilitates NHEJ and the maintenance of genome stability.
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Affiliation(s)
- Ye Zhang
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Jian-Feng Chang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Jin Sun
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Lu Chen
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Xiao-Mei Yang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Huan-Yin Tang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Yuan-Ya Jing
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Xuan Kang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Zhi-Min He
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Jun-Yu Wu
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Hui-Min Wei
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Da-Liang Wang
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Rong-Gang Xu
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Rui-Bao Zhu
- School of Medicine, Tsinghua University, Beijing 100084, PR China
| | - Ying Shen
- School of Software Engineering, Tongji University, Shanghai 200092, PR China
| | - Shi-Yang Zeng
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Chen Wang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Kui-Nan Liu
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Yong Zhang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Zhi-Ying Mao
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Ci-Zhong Jiang
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
| | - Fang-Lin Sun
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai 200092, PR China
- School of Medicine, Tsinghua University, Beijing 100084, PR China
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215
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Asur RS, Kimble DC, Lach FP, Jung M, Donovan FX, Kamat A, Noonan RJ, Thomas JW, Park M, Chines P, Vlachos A, Auerbach AD, Smogorzewska A, Chandrasekharappa SC. Somatic mosaicism of an intragenic FANCB duplication in both fibroblast and peripheral blood cells observed in a Fanconi anemia patient leads to milder phenotype. Mol Genet Genomic Med 2018; 6:77-91. [PMID: 29193904 PMCID: PMC5823675 DOI: 10.1002/mgg3.350] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/28/2017] [Accepted: 10/23/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Fanconi anemia (FA) is a rare disorder characterized by congenital malformations, progressive bone marrow failure, and predisposition to cancer. Patients harboring X-linked FANCB pathogenic variants usually present with severe congenital malformations resembling VACTERL syndrome with hydrocephalus. METHODS We employed the diepoxybutane (DEB) test for FA diagnosis, arrayCGH for detection of duplication, targeted capture and next-gen sequencing for defining the duplication breakpoint, PacBio sequencing of full-length FANCB aberrant transcript, FANCD2 ubiquitination and foci formation assays for the evaluation of FANCB protein function by viral transduction of FANCB-null cells with lentiviral FANCB WT and mutant expression constructs, and droplet digital PCR for quantitation of the duplication in the genomic DNA and cDNA. RESULTS We describe here an FA-B patient with a mild phenotype. The DEB diagnostic test for FA revealed somatic mosaicism. We identified a 9154 bp intragenic duplication in FANCB, covering the first coding exon 3 and the flanking regions. A four bp homology (GTAG) present at both ends of the breakpoint is consistent with microhomology-mediated duplication mechanism. The duplicated allele gives rise to an aberrant transcript containing exon 3 duplication, predicted to introduce a stop codon in FANCB protein (p.A319*). Duplication levels in the peripheral blood DNA declined from 93% to 7.9% in the span of eleven years. Moreover, the patient fibroblasts have shown 8% of wild-type (WT) allele and his carrier mother showed higher than expected levels of WT allele (79% vs. 50%) in peripheral blood, suggesting that the duplication was highly unstable. CONCLUSION Unlike sequence point variants, intragenic duplications are difficult to precisely define, accurately quantify, and may be very unstable, challenging the proper diagnosis. The reversion of genomic duplication to the WT allele results in somatic mosaicism and may explain the relatively milder phenotype displayed by the FA-B patient described here.
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Affiliation(s)
- Rajalakshmi S. Asur
- Cancer Genetics and Comparative Genomics BranchNational Human Genome Research InstituteNIHBethesdaMDUSA
| | - Danielle C. Kimble
- Cancer Genetics and Comparative Genomics BranchNational Human Genome Research InstituteNIHBethesdaMDUSA
| | - Francis P. Lach
- Laboratory of Genome MaintenanceThe Rockefeller UniversityNew YorkNYUSA
| | - Moonjung Jung
- Laboratory of Genome MaintenanceThe Rockefeller UniversityNew YorkNYUSA
| | - Frank X. Donovan
- Cancer Genetics and Comparative Genomics BranchNational Human Genome Research InstituteNIHBethesdaMDUSA
| | - Aparna Kamat
- Cancer Genetics and Comparative Genomics BranchNational Human Genome Research InstituteNIHBethesdaMDUSA
| | - Raymond J. Noonan
- Laboratory of Genome MaintenanceThe Rockefeller UniversityNew YorkNYUSA
| | - James W. Thomas
- NIH Intramural Sequencing CenterNational Human Genome Research InstituteNIHRockvilleMDUSA
| | - Morgan Park
- NIH Intramural Sequencing CenterNational Human Genome Research InstituteNIHRockvilleMDUSA
| | - Peter Chines
- Medical Genomics and Metabolic Genetics BranchNational Human Genome Research InstituteNIHBethesdaMDUSA
| | - Adrianna Vlachos
- Hematology/Oncology and Stem Cell TransplantationCohen Children's Medical CenterNew Hyde ParkNYUSA
- The Feinstein Institute for Medical Research of Northwell HealthManhassetNYUSA
| | - Arleen D. Auerbach
- Human Genetics and Hematology ProgramThe Rockefeller UniversityNew YorkNYUSA
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216
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Patterns and frequency of renal abnormalities in Fanconi anaemia: implications for long-term management. Pediatr Nephrol 2018; 33:1547-1551. [PMID: 29651604 PMCID: PMC6061664 DOI: 10.1007/s00467-018-3952-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 01/07/2023]
Abstract
BACKGROUND Fanconi anaemia (FA) is an inherited disease with bone marrow failure, variable congenital and developmental abnormalities, and cancer predisposition. With improved survival, non-haematological manifestations of FA become increasingly important for long-term management. While renal abnormalities are recognized, detailed data on patterns and frequency and implications for long-term management are sparse. METHODS We reviewed clinical course and imaging findings of FA patients with respect to renal complications in our centre over a 25-year period to formulate some practical suggestions for guidelines for management of renal problems associated with FA. RESULTS Thirty patients including four sibling sets were reviewed. On imaging, 14 had evidence of anatomical abnormalities of the kidneys. Two cases with severe phenotype, including renal abnormalities, had chronic kidney disease (CKD) at diagnosis. Haematopoietic stem cell transplantation was complicated by significant acute kidney injury (AKI) in three cases. In three patients, there was CKD at long-term follow-up. All patients had normal blood pressure. CONCLUSIONS Evaluation of renal anatomy with ultrasound imaging is important at diagnostic workup of FA. While CKD is uncommon at diagnosis, our data suggests that the incidence of CKD increases with age, in particular after haematopoietic stem cell transplantation. Monitoring of renal function is essential for management of FA. Based on these long-term clinical observations, we formulate some practical guidelines for assessment and management of renal abnormalities in FA.
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217
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Mgbemena VE, Signer RAJ, Wijayatunge R, Laxson T, Morrison SJ, Ross TS. Distinct Brca1 Mutations Differentially Reduce Hematopoietic Stem Cell Function. Cell Rep 2017; 18:947-960. [PMID: 28122244 DOI: 10.1016/j.celrep.2016.12.075] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/23/2016] [Accepted: 12/22/2016] [Indexed: 12/19/2022] Open
Abstract
BRCA1 is a well-known DNA repair pathway component and a tissue-specific tumor suppressor. However, its role in hematopoiesis is uncertain. Here, we report that a cohort of patients heterozygous for BRCA1 mutations experienced more hematopoietic toxicity from chemotherapy than those with BRCA2 mutations. To test whether this reflects a requirement for BRCA1 in hematopoiesis, we generated mice with Brca1 mutations in hematopoietic cells. Mice homozygous for a null Brca1 mutation in the embryonic hematopoietic system (Vav1-iCre;Brca1F22-24/F22-24) developed hematopoietic defects in early adulthood that included reduced hematopoietic stem cells (HSCs). Although mice homozygous for a huBRCA1 knockin allele (Brca1BRCA1/BRCA1) were normal, mice with a mutant huBRCA1/5382insC allele and a null allele (Mx1-Cre;Brca1F22-24/5382insC) had severe hematopoietic defects marked by a complete loss of hematopoietic stem and progenitor cells. Our data show that Brca1 is necessary for HSC maintenance and normal hematopoiesis and that distinct mutations lead to different degrees of hematopoietic dysfunction.
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Affiliation(s)
- Victoria E Mgbemena
- Department of Internal Medicine, Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Robert A J Signer
- Department of Pediatrics and Children's Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Division of Regenerative Medicine, Department of Medicine, Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ranjula Wijayatunge
- Department of Internal Medicine, Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Travis Laxson
- Department of Internal Medicine, Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Sean J Morrison
- Department of Pediatrics and Children's Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Theodora S Ross
- Department of Internal Medicine, Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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218
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Thompson EL, Yeo JE, Lee EA, Kan Y, Raghunandan M, Wiek C, Hanenberg H, Schärer OD, Hendrickson EA, Sobeck A. FANCI and FANCD2 have common as well as independent functions during the cellular replication stress response. Nucleic Acids Res 2017; 45:11837-11857. [PMID: 29059323 PMCID: PMC5714191 DOI: 10.1093/nar/gkx847] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 09/16/2017] [Indexed: 11/18/2022] Open
Abstract
Fanconi anemia (FA) is an inherited cancer predisposition syndrome characterized by cellular hypersensitivity to DNA interstrand crosslinks (ICLs). To repair these lesions, the FA proteins act in a linear hierarchy: following ICL detection on chromatin, the FA core complex monoubiquitinates and recruits the central FANCI and FANCD2 proteins that subsequently coordinate ICL removal and repair of the ensuing DNA double-stranded break by homology-dependent repair (HDR). FANCD2 also functions during the replication stress response by mediating the restart of temporarily stalled replication forks thereby suppressing the firing of new replication origins. To address if FANCI is also involved in these FANCD2-dependent mechanisms, we generated isogenic FANCI-, FANCD2- and FANCI:FANCD2 double-null cells. We show that FANCI and FANCD2 are partially independent regarding their protein stability, nuclear localization and chromatin recruitment and contribute independently to cellular proliferation. Simultaneously, FANCD2—but not FANCI—plays a major role in HDR-mediated replication restart and in suppressing new origin firing. Consistent with this observation, deficiencies in HDR-mediated DNA DSB repair can be overcome by stabilizing RAD51 filament formation in cells lacking functional FANCD2. We propose that FANCI and FANCD2 have partially non-overlapping and possibly even opposing roles during the replication stress response.
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Affiliation(s)
- Elizabeth L Thompson
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jung E Yeo
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA.,Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Eun-A Lee
- Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Yinan Kan
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Maya Raghunandan
- Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Constanze Wiek
- Department of Otorhinolaryngology and Head/Neck Surgery, Heinrich-Heine University, 40225 Düsseldorf, Germany
| | - Helmut Hanenberg
- Department of Otorhinolaryngology and Head/Neck Surgery, Heinrich-Heine University, 40225 Düsseldorf, Germany.,Department of Pediatrics III, University Children's Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany
| | - Orlando D Schärer
- Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Eric A Hendrickson
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Alexandra Sobeck
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
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219
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Alavattam KG, Kato Y, Sin HS, Maezawa S, Kowalski IJ, Zhang F, Pang Q, Andreassen PR, Namekawa SH. Elucidation of the Fanconi Anemia Protein Network in Meiosis and Its Function in the Regulation of Histone Modifications. Cell Rep 2017; 17:1141-1157. [PMID: 27760317 PMCID: PMC5095620 DOI: 10.1016/j.celrep.2016.09.073] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 08/17/2016] [Accepted: 09/21/2016] [Indexed: 01/14/2023] Open
Abstract
Precise epigenetic regulation of the sex chromosomes is vital for the male germline. Here, we analyze meiosis in eight mouse models deficient for various DNA damage response (DDR) factors, including Fanconi anemia (FA) proteins. We reveal a network of FA and DDR proteins in which FA core factors FANCA, FANCB, and FANCC are essential for FANCD2 foci formation, whereas BRCA1 (FANCS), MDC1, and RNF8 are required for BRCA2 (FANCD1) and SLX4 (FANCP) accumulation on the sex chromosomes during meiosis. In addition, FA proteins modulate distinct histone marks on the sex chromosomes: FA core proteins and FANCD2 regulate H3K9 methylation, while FANCD2 and RNF8 function together to regulate H3K4 methylation independently of FA core proteins. Our data suggest that RNF8 integrates the FA-BRCA pathway. Taken together, our study reveals distinct functions for FA proteins and illuminates the male sex chromosomes as a model to dissect the function of the FA-BRCA pathway.
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Affiliation(s)
- Kris G Alavattam
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Yasuko Kato
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Ho-Su Sin
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - So Maezawa
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Ian J Kowalski
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Fan Zhang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Qishen Pang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Paul R Andreassen
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA
| | - Satoshi H Namekawa
- Division of Reproductive Sciences and Division of Developmental Biology, Perinatal Institute, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 49229, USA.
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220
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Klages-Mundt NL, Li L. Formation and repair of DNA-protein crosslink damage. SCIENCE CHINA-LIFE SCIENCES 2017; 60:1065-1076. [PMID: 29098631 DOI: 10.1007/s11427-017-9183-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/26/2017] [Indexed: 12/15/2022]
Abstract
DNA is constantly exposed to a wide array of genotoxic agents, generating a variety of forms of DNA damage. DNA-protein crosslinks (DPCs)-the covalent linkage of proteins with a DNA strand-are one of the most deleterious and understudied forms of DNA damage, posing as steric blockades to transcription and replication. If not properly repaired, these lesions can lead to mutations, genomic instability, and cell death. DPCs can be induced endogenously or through environmental carcinogens and chemotherapeutic agents. Endogenously, DPCs are commonly derived through reactions with aldehydes, as well as through trapping of various enzymatic intermediates onto the DNA. Proteolytic cleavage of the protein moiety of a DPC is a general strategy for removing the lesion. This can be accomplished through a DPC-specific protease and and/or proteasome-mediated degradation. Nucleotide excision repair and homologous recombination are each involved in repairing DPCs, with their respective roles likely dependent on the nature and size of the adduct. The Fanconi anemia pathway may also have a role in processing DPC repair intermediates. In this review, we discuss how these lesions are formed, strategies and mechanisms for their removal, and diseases associated with defective DPC repair.
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Affiliation(s)
- Naeh L Klages-Mundt
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
- Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
| | - Lei Li
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, 77030, USA.
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221
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Niraj J, Caron MC, Drapeau K, Bérubé S, Guitton-Sert L, Coulombe Y, Couturier AM, Masson JY. The identification of FANCD2 DNA binding domains reveals nuclear localization sequences. Nucleic Acids Res 2017; 45:8341-8357. [PMID: 28666371 PMCID: PMC5737651 DOI: 10.1093/nar/gkx543] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Accepted: 06/26/2017] [Indexed: 01/09/2023] Open
Abstract
Fanconi anemia (FA) is a recessive genetic disorder characterized by congenital abnormalities, progressive bone-marrow failure, and cancer susceptibility. The FA pathway consists of at least 21 FANC genes (FANCA-FANCV), and the encoded protein products interact in a common cellular pathway to gain resistance against DNA interstrand crosslinks. After DNA damage, FANCD2 is monoubiquitinated and accumulates on chromatin. FANCD2 plays a central role in the FA pathway, using yet unidentified DNA binding regions. By using synthetic peptide mapping and DNA binding screen by electromobility shift assays, we found that FANCD2 bears two major DNA binding domains predominantly consisting of evolutionary conserved lysine residues. Furthermore, one domain at the N-terminus of FANCD2 bears also nuclear localization sequences for the protein. Mutations in the bifunctional DNA binding/NLS domain lead to a reduction in FANCD2 monoubiquitination and increase in mitomycin C sensitivity. Such phenotypes are not fully rescued by fusion with an heterologous NLS, which enable separation of DNA binding and nuclear import functions within this domain that are necessary for FANCD2 functions. Collectively, our results enlighten the importance of DNA binding and NLS residues in FANCD2 to activate an efficient FA pathway.
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Affiliation(s)
- Joshi Niraj
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Marie-Christine Caron
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Karine Drapeau
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Stéphanie Bérubé
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Laure Guitton-Sert
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Yan Coulombe
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Anthony M Couturier
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Jean-Yves Masson
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
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222
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Moriel-Carretero M, Ovejero S, Gérus-Durand M, Vryzas D, Constantinou A. Fanconi anemia FANCD2 and FANCI proteins regulate the nuclear dynamics of splicing factors. J Cell Biol 2017; 216:4007-4026. [PMID: 29030393 PMCID: PMC5716273 DOI: 10.1083/jcb.201702136] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 08/02/2017] [Accepted: 08/25/2017] [Indexed: 01/20/2023] Open
Abstract
Moriel-Carretero et al. show that the Fanconi anemia proteins FANCI and FANCD2 associate with the splicing factor SF3B1 and that DNA replication stress induces the FANCI-dependent release of SF3B1 from nuclear speckles. FANCI and FANCD2 prevent accumulation of postcatalytic intron lariats, suggesting that they help coordinate DNA replication and transcription. Proteins disabled in the cancer-prone disorder Fanconi anemia (FA) ensure the maintenance of chromosomal stability during DNA replication. FA proteins regulate replication dynamics, coordinate replication-coupled repair of interstrand DNA cross-links, and mitigate conflicts between replication and transcription. Here we show that FANCI and FANCD2 associate with splicing factor 3B1 (SF3B1), a key spliceosomal protein of the U2 small nuclear ribonucleoprotein (U2 snRNP). FANCI is in close proximity to SF3B1 in the nucleoplasm of interphase and mitotic cells. Furthermore, we find that DNA replication stress induces the release of SF3B1 from nuclear speckles in a manner that depends on FANCI and on the activity of the checkpoint kinase ATR. In chromatin, both FANCD2 and FANCI associate with SF3B1, prevent accumulation of postcatalytic intron lariats, and contribute to the timely eviction of splicing factors. We propose that FANCD2 and FANCI contribute to the organization of functional domains in chromatin, ensuring the coordination of DNA replication and cotranscriptional processes.
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Affiliation(s)
- María Moriel-Carretero
- Institute of Human Genetics, Centre National de la Recherche Scientifique UMR 9002, Université de Montpellier, Montpellier, France
| | - Sara Ovejero
- Institute of Human Genetics, Centre National de la Recherche Scientifique UMR 9002, Université de Montpellier, Montpellier, France
| | - Marie Gérus-Durand
- Institute of Human Genetics, Centre National de la Recherche Scientifique UMR 9002, Université de Montpellier, Montpellier, France
| | - Dimos Vryzas
- Institute of Human Genetics, Centre National de la Recherche Scientifique UMR 9002, Université de Montpellier, Montpellier, France
| | - Angelos Constantinou
- Institute of Human Genetics, Centre National de la Recherche Scientifique UMR 9002, Université de Montpellier, Montpellier, France
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223
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Tian Y, Shen X, Wang R, Klages-Mundt NL, Lynn EJ, Martin SK, Ye Y, Gao M, Chen J, Schlacher K, Li L. Constitutive role of the Fanconi anemia D2 gene in the replication stress response. J Biol Chem 2017; 292:20184-20195. [PMID: 29021208 DOI: 10.1074/jbc.m117.814780] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/29/2017] [Indexed: 12/12/2022] Open
Abstract
In response to DNA cross-linking damage, the Fanconi anemia (FA) core complex activates the FA pathway by monoubiquitinating Fanconi anemia complementation group D2 (FANCD2) for the initiation of the nucleolytic processing of the DNA cross-links and stabilization of stalled replication forks. Given that all the classic FA proteins coordinately monoubiquitinate FANCD2, it is unclear why losses of individual classic FA genes yield varying cellular sensitivities to cross-linking damage. To address this question, we generated cellular knock-out models of FA core complex components and FANCD2 and found that FANCD2-null mutants display higher levels of spontaneous chromosomal damage and hypersensitivity to replication-blocking lesions than Fanconi anemia complementation group L (FANCL)-null mutants, suggesting that FANCD2 provides a basal level of DNA protection countering endogenous lesions in the absence of monoubiquitination. FANCD2's ubiquitination-independent function is likely involved in optimized recruitment of nucleolytic activities for the processing and protection of stressed replication forks. Our results reveal that FANCD2 has a ubiquitination-independent role in countering endogenous levels of replication stress, a function that is critical for the maintenance of genomic stability.
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Affiliation(s)
- Yanyan Tian
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Xi Shen
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Rui Wang
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Naeh L Klages-Mundt
- Departments of Experimental Radiation Biology, Houston, Texas 77030; Programs in Genetics and Epigenetics, Houston, Texas 77030
| | - Erica J Lynn
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Sara K Martin
- Departments of Experimental Radiation Biology, Houston, Texas 77030; Programs in Genetics and Epigenetics, Houston, Texas 77030
| | - Yin Ye
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Min Gao
- Departments of Experimental Radiation Biology, Houston, Texas 77030
| | - Junjie Chen
- Departments of Experimental Radiation Biology, Houston, Texas 77030; Programs in Genetics and Epigenetics, Houston, Texas 77030
| | - Katharina Schlacher
- Cancer Biology, University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030; Cancer Biology, M. D. Anderson Cancer Center University of Texas Health Graduate School of Biomedical Sciences, Houston, Texas 77030
| | - Lei Li
- Departments of Experimental Radiation Biology, Houston, Texas 77030; Programs in Genetics and Epigenetics, Houston, Texas 77030.
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224
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Fernández-García M, Luisa Lamana M, Hernando-Rodríguez M, Sánchez-Domínguez R, Bueren J, Yañez R. Improved Hematopoietic Gene Therapy in a Mouse Model of Fanconi Anemia Mediated by Mesenchymal Stromal Cells. Hum Gene Ther 2017; 29:327-336. [PMID: 28816065 DOI: 10.1089/hum.2017.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
In this study we propose a novel approach based on the use of mesenchymal stromal cells (MSCs), aiming at limiting risks of graft failure in gene therapy protocols associated with low conditioning regimens. Because the engraftment of corrected hematopoietic stem cells (HSCs) is particularly challenging in Fanconi anemia (FA), we have investigated the relevance of MSCs in an experimental model of FA gene therapy. Our results showed, first, that risks of graft failure in recipients conditioned with a moderate dose of 5 Gy and infused with limited numbers of wild-type HSCs are significantly higher in Fanca-/- recipients as compared with wild-type recipients. However, when wild-type HSC numbers inducing 30-50% of graft failures in Fanca-/- recipients were coinfused with MSCs, no graft failures were observed. Moreover, graft failures associated with the infusion of low numbers of gene-corrected Fanca-/- HSCs were also significantly overcome by MSC coinfusion. Our study shows for the first time that MSC coinfusion constitutes a simple and nontoxic approach to minimize risks of graft failure in gene therapy applications associated with low conditioning regimens and infusion of limited numbers of corrected HSCs.
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Affiliation(s)
- María Fernández-García
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Maria Luisa Lamana
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Miriam Hernando-Rodríguez
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Rebeca Sánchez-Domínguez
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Juan Bueren
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
| | - Rosa Yañez
- 1 Division of Hematopoietic Innovative Therapies, Centro de Investigaciones Energéticas, Medioambientales, y Tecnológicas(CIEMAT)/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER-ISCIII) , Madrid, Spain.,2 Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD, UAM), Madrid, Spain
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225
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Reyes ED, Kulej K, Pancholi NJ, Akhtar LN, Avgousti DC, Kim ET, Bricker DK, Spruce LA, Koniski SA, Seeholzer SH, Isaacs SN, Garcia BA, Weitzman MD. Identifying Host Factors Associated with DNA Replicated During Virus Infection. Mol Cell Proteomics 2017; 16:2079-2097. [PMID: 28972080 DOI: 10.1074/mcp.m117.067116] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 07/14/2017] [Indexed: 01/22/2023] Open
Abstract
Viral DNA genomes replicating in cells encounter a myriad of host factors that facilitate or hinder viral replication. Viral proteins expressed early during infection modulate host factors interacting with viral genomes, recruiting proteins to promote viral replication, and limiting access to antiviral repressors. Although some host factors manipulated by viruses have been identified, we have limited knowledge of pathways exploited during infection and how these differ between viruses. To identify cellular processes manipulated during viral replication, we defined proteomes associated with viral genomes during infection with adenovirus, herpes simplex virus and vaccinia virus. We compared enrichment of host factors between virus proteomes and confirmed association with viral genomes and replication compartments. Using adenovirus as an illustrative example, we uncovered host factors deactivated by early viral proteins, and identified a subgroup of nucleolar proteins that aid virus replication. Our data sets provide valuable resources of virus-host interactions that affect proteins on viral genomes.
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Affiliation(s)
- Emigdio D Reyes
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Katarzyna Kulej
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Neha J Pancholi
- §Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,¶Cell and Molecular Biology Graduate Group, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Lisa N Akhtar
- ‖Division of Infectious Diseases, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Daphne C Avgousti
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Eui Tae Kim
- §Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Daniel K Bricker
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Lynn A Spruce
- **Protein and Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Sarah A Koniski
- §Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Steven H Seeholzer
- **Protein and Proteomics Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Stuart N Isaacs
- ‡‡Division of Infectious Diseases, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Benjamin A Garcia
- §§Epigenetics Program, Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Matthew D Weitzman
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania; .,§Division of Protective Immunity and Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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226
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Federico MB, Campodónico P, Paviolo NS, Gottifredi V. ACCIDENTAL DUPLICATION: Beyond interstrand crosslinks repair: Contribution of FANCD2 and other Fanconi Anemia proteins to the replication of DNA. Mutat Res 2017:S0027-5107(17)30167-7. [PMID: 28966006 DOI: 10.1016/j.mrfmmm.2017.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 09/24/2017] [Indexed: 11/30/2022]
Abstract
The Publisher regrets that this article is an accidental duplication of an article that has already been published, http://dx.doi.org/ 10.1016/j.mrfmmm.2017.09.006. This duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Maria B Federico
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Paola Campodónico
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Natalia S Paviolo
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Vanesa Gottifredi
- Cell Cycle and Genomic Stability Laboratory, Fundación Instituto Leloir-Instituto de Investigaciones Bioquímicas de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
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227
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Hengel SR, Spies MA, Spies M. Small-Molecule Inhibitors Targeting DNA Repair and DNA Repair Deficiency in Research and Cancer Therapy. Cell Chem Biol 2017; 24:1101-1119. [PMID: 28938088 PMCID: PMC5679738 DOI: 10.1016/j.chembiol.2017.08.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/11/2017] [Accepted: 08/30/2017] [Indexed: 01/13/2023]
Abstract
To maintain stable genomes and to avoid cancer and aging, cells need to repair a multitude of deleterious DNA lesions, which arise constantly in every cell. Processes that support genome integrity in normal cells, however, allow cancer cells to develop resistance to radiation and DNA-damaging chemotherapeutics. Chemical inhibition of the key DNA repair proteins and pharmacologically induced synthetic lethality have become instrumental in both dissecting the complex DNA repair networks and as promising anticancer agents. The difficulty in capitalizing on synthetically lethal interactions in cancer cells is that many potential targets do not possess well-defined small-molecule binding determinates. In this review, we discuss several successful campaigns to identify and leverage small-molecule inhibitors of the DNA repair proteins, from PARP1, a paradigm case for clinically successful small-molecule inhibitors, to coveted new targets, such as RAD51 recombinase, RAD52 DNA repair protein, MRE11 nuclease, and WRN DNA helicase.
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Affiliation(s)
- Sarah R Hengel
- Department of Biochemistry, University of Iowa, Iowa City, IA 52242, USA
| | - M Ashley Spies
- Department of Biochemistry, University of Iowa, Iowa City, IA 52242, USA; Department of Pharmaceutical Sciences and Experimental Therapeutics, Division of Medicinal and Natural Products Chemistry, University of Iowa, Iowa City, IA 52242, USA.
| | - Maria Spies
- Department of Biochemistry, University of Iowa, Iowa City, IA 52242, USA.
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228
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Inano S, Sato K, Katsuki Y, Kobayashi W, Tanaka H, Nakajima K, Nakada S, Miyoshi H, Knies K, Takaori-Kondo A, Schindler D, Ishiai M, Kurumizaka H, Takata M. RFWD3-Mediated Ubiquitination Promotes Timely Removal of Both RPA and RAD51 from DNA Damage Sites to Facilitate Homologous Recombination. Mol Cell 2017; 66:622-634.e8. [PMID: 28575658 DOI: 10.1016/j.molcel.2017.04.022] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 01/28/2017] [Accepted: 04/26/2017] [Indexed: 12/12/2022]
Abstract
RFWD3 is a recently identified Fanconi anemia protein FANCW whose E3 ligase activity toward RPA is essential in homologous recombination (HR) repair. However, how RPA ubiquitination promotes HR remained unknown. Here, we identified RAD51, the central HR protein, as another target of RFWD3. We show that RFWD3 polyubiquitinates both RPA and RAD51 in vitro and in vivo. Phosphorylation by ATR and ATM kinases is required for this activity in vivo. RFWD3 inhibits persistent mitomycin C (MMC)-induced RAD51 and RPA foci by promoting VCP/p97-mediated protein dynamics and subsequent degradation. Furthermore, MMC-induced chromatin loading of MCM8 and RAD54 is defective in cells with inactivated RFWD3 or expressing a ubiquitination-deficient mutant RAD51. Collectively, our data reveal a mechanism that facilitates timely removal of RPA and RAD51 from DNA damage sites, which is crucial for progression to the late-phase HR and suppression of the FA phenotype.
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Affiliation(s)
- Shojiro Inano
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto 606-8501, Japan; Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Koichi Sato
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo 169-8050, Japan
| | - Yoko Katsuki
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto 606-8501, Japan
| | - Wataru Kobayashi
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo 169-8050, Japan
| | - Hiroki Tanaka
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo 169-8050, Japan
| | - Kazuhiro Nakajima
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Shinichiro Nakada
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan; Institute for Advanced Co-Creation Studies, Osaka University, Osaka 565-0871, Japan
| | - Hiroyuki Miyoshi
- Department of Physiology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Kerstin Knies
- Department of Human Genetics, Biozentrum, University of Wurzburg, 97074 Wurzburg, Germany
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Detlev Schindler
- Department of Human Genetics, Biozentrum, University of Wurzburg, 97074 Wurzburg, Germany
| | - Masamichi Ishiai
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto 606-8501, Japan
| | - Hitoshi Kurumizaka
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo 169-8050, Japan
| | - Minoru Takata
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto 606-8501, Japan.
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229
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Molecular Mechanisms of Acetaldehyde-Mediated Carcinogenesis in Squamous Epithelium. Int J Mol Sci 2017; 18:ijms18091943. [PMID: 28891965 PMCID: PMC5618592 DOI: 10.3390/ijms18091943] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/29/2017] [Accepted: 09/07/2017] [Indexed: 12/19/2022] Open
Abstract
Acetaldehyde is a highly reactive compound that causes various forms of damage to DNA, including DNA adducts, single- and/or double-strand breaks (DSBs), point mutations, sister chromatid exchanges (SCEs), and DNA-DNA cross-links. Among these, DNA adducts such as N²-ethylidene-2'-deoxyguanosine, N²-ethyl-2'-deoxyguanosine, N²-propano-2'-deoxyguanosine, and N²-etheno-2'-deoxyguanosine are central to acetaldehyde-mediated DNA damage because they are associated with the induction of DNA mutations, DNA-DNA cross-links, DSBs, and SCEs. Acetaldehyde is produced endogenously by alcohol metabolism and is catalyzed by aldehyde dehydrogenase 2 (ALDH2). Alcohol consumption increases blood and salivary acetaldehyde levels, especially in individuals with ALDH2 polymorphisms, which are highly associated with the risk of squamous cell carcinomas in the upper aerodigestive tract. Based on extensive epidemiological evidence, the International Agency for Research on Cancer defined acetaldehyde associated with the consumption of alcoholic beverages as a "group 1 carcinogen" (definite carcinogen) for the esophagus and/or head and neck. In this article, we review recent advances from studies of acetaldehyde-mediated carcinogenesis in the squamous epithelium, focusing especially on acetaldehyde-mediated DNA adducts. We also give attention to research on acetaldehyde-mediated DNA repair pathways such as the Fanconi anemia pathway and refer to our studies on the prevention of acetaldehyde-mediated DNA damage.
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230
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Naka K, Hirao A. Regulation of Hematopoiesis and Hematological Disease by TGF-β Family Signaling Molecules. Cold Spring Harb Perspect Biol 2017; 9:cshperspect.a027987. [PMID: 28193723 DOI: 10.1101/cshperspect.a027987] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Throughout the lifetime of an individual, hematopoietic stem cells (HSCs) maintain the homeostasis of normal hematopoiesis through the precise generation of mature blood cells. Numerous genetic studies in mice have shown that stem-cell quiescence is critical for sustaining primitive long-term HSCs in vivo. In this review, we first examine the crucial roles of transforming growth factor β (TGF-β) and related signaling molecules in not only regulating the well-known cytostatic effects of these molecules but also governing the self-renewal capacity of HSCs in their in vivo microenvironmental niche. Second, we discuss the current evidence indicating that TGF-β signaling has a dual function in disorders of the hematopoietic system. In particular, we examine the paradox that, although intrinsic TGF-β signaling is essential for regulating the survival and resistance to therapy of chronic myelogenous leukemia (CML) stem cells, genetic changes that abrogate TGF-β signaling can lead to the development of several hematological malignancies.
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Affiliation(s)
- Kazuhito Naka
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Minami-ku, Hiroshima 734-8553, Japan
| | - Atsushi Hirao
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
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231
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Abstract
Covalent DNA-protein crosslinks (DPCs, also known as protein adducts) of topoisomerases and other proteins with DNA are highly toxic DNA lesions. Of note, chemical agents that induce DPCs include widely used classes of chemotherapeutics. Their bulkiness blocks virtually every chromatin-based process and makes them intractable for repair by canonical repair pathways. Distinct DPC repair pathways employ unique points of attack and are crucial for the maintenance of genome stability. Tyrosyl-DNA phosphodiesterases (TDPs) directly hydrolyse the covalent linkage between protein and DNA. The MRE11-RAD50-NBS1 (MRN) nuclease complex targets the DNA component of DPCs, excising the fragment affected by the lesion, whereas proteases of the spartan (SPRTN)/weak suppressor of SMT3 protein 1 (Wss1) family target the protein component. Loss of these pathways renders cells sensitive to DPC-inducing chemotherapeutics, and DPC repair pathways are thus attractive targets for combination cancer therapy.
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Affiliation(s)
- Julian Stingele
- The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | | | - Simon J Boulton
- The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
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232
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Shima N, Pederson KD. Dormant origins as a built-in safeguard in eukaryotic DNA replication against genome instability and disease development. DNA Repair (Amst) 2017; 56:166-173. [PMID: 28641940 PMCID: PMC5547906 DOI: 10.1016/j.dnarep.2017.06.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
DNA replication is a prerequisite for cell proliferation, yet it can be increasingly challenging for a eukaryotic cell to faithfully duplicate its genome as its size and complexity expands. Dormant origins now emerge as a key component for cells to successfully accomplish such a demanding but essential task. In this perspective, we will first provide an overview of the fundamental processes eukaryotic cells have developed to regulate origin licensing and firing. With a special focus on mammalian systems, we will then highlight the role of dormant origins in preventing replication-associated genome instability and their functional interplay with proteins involved in the DNA damage repair response for tumor suppression. Lastly, deficiencies in the origin licensing machinery will be discussed in relation to their influence on stem cell maintenance and human diseases.
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Affiliation(s)
- Naoko Shima
- The University of Minnesota, Twin Cities, Department of Genetics, Cell Biology and Development, Masonic Cancer Center, 6-160 Jackson Hall, 321 Church St SE., Minneapolis, MN 55455, United States.
| | - Kayla D Pederson
- The University of Minnesota, Twin Cities, Department of Genetics, Cell Biology and Development, Masonic Cancer Center, 6-160 Jackson Hall, 321 Church St SE., Minneapolis, MN 55455, United States
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233
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234
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DNA damage tolerance in hematopoietic stem and progenitor cells in mice. Proc Natl Acad Sci U S A 2017; 114:E6875-E6883. [PMID: 28761001 DOI: 10.1073/pnas.1706508114] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
DNA damage tolerance (DDT) enables bypassing of DNA lesions during replication, thereby preventing fork stalling, replication stress, and secondary DNA damage related to fork stalling. Three modes of DDT have been documented: translesion synthesis (TLS), template switching (TS), and repriming. TLS and TS depend on site-specific PCNA K164 monoubiquitination and polyubiquitination, respectively. To investigate the role of DDT in maintaining hematopoietic stem cells (HSCs) and progenitors, we used PcnaK164R/K164R mice as a unique DDT-defective mouse model. Analysis of the composition of HSCs and HSC-derived multipotent progenitors (MPPs) revealed a significantly reduced number of HSCs, likely owing to increased differentiation of HSCs toward myeloid/erythroid-associated MPP2s. This skewing came at the expense of the number of lymphoid-primed MPP4s, which appeared to be compensated for by increased MPP4 proliferation. Furthermore, defective DDT decreased the numbers of MPP-derived common lymphoid progenitor (CLP), common myeloid progenitor (CMP), megakaryocyte-erythroid progenitor (MEP), and granulocyte-macrophage progenitor (GMP) cells, accompanied by increased cell cycle arrest in CMPs. The HSC and MPP phenotypes are reminiscent of premature aging and stressed hematopoiesis, and indeed progressed with age and were exacerbated on cisplatin exposure. Bone marrow transplantations revealed a strong cell intrinsic defect of DDT-deficient HSCs in reconstituting lethally irradiated mice and a strong competitive disadvantage when cotransplanted with wild-type HSCs. These findings indicate a critical role of DDT in maintaining HSCs and progenitor cells, and in preventing premature aging.
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235
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Abstract
An improved understanding of the bone marrow failure (BMF) mechanisms in Fanconi anemia (FA) may improve current therapeutic strategies. Zhang et al. identify hyperactive TGF-β signaling as an underlying cause of BMF in FA mice and patient cells, whose inhibition promotes DNA repair and hematopoietic stem and progenitor cell survival.
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Affiliation(s)
- Hemanth Tummala
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London and Barts Health, London, E12AT, UK
| | - Inderjeet Dokal
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London and Barts Health, London, E12AT, UK.
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236
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NEK1 kinase domain structure and its dynamic protein interactome after exposure to Cisplatin. Sci Rep 2017; 7:5445. [PMID: 28710492 PMCID: PMC5511132 DOI: 10.1038/s41598-017-05325-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/02/2017] [Indexed: 11/11/2022] Open
Abstract
NEK family kinases are serine/threonine kinases that have been functionally implicated in the regulation of the disjunction of the centrosome, the assembly of the mitotic spindle, the function of the primary cilium and the DNA damage response. NEK1 shows pleiotropic functions and has been found to be mutated in cancer cells, ciliopathies such as the polycystic kidney disease, as well as in the genetic diseases short-rib thoracic dysplasia, Mohr-syndrome and amyotrophic lateral sclerosis. NEK1 is essential for the ionizing radiation DNA damage response and priming of the ATR kinase and of Rad54 through phosphorylation. Here we report on the structure of the kinase domain of human NEK1 in its apo- and ATP-mimetic inhibitor bound forms. The inhibitor bound structure may allow the design of NEK specific chemo-sensitizing agents to act in conjunction with chemo- or radiation therapy of cancer cells. Furthermore, we characterized the dynamic protein interactome of NEK1 after DNA damage challenge with cisplatin. Our data suggest that NEK1 and its interaction partners trigger the DNA damage pathways responsible for correcting DNA crosslinks.
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237
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Knies K, Inano S, Ramírez MJ, Ishiai M, Surrallés J, Takata M, Schindler D. Biallelic mutations in the ubiquitin ligase RFWD3 cause Fanconi anemia. J Clin Invest 2017; 127:3013-3027. [PMID: 28691929 DOI: 10.1172/jci92069] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 05/16/2017] [Indexed: 12/28/2022] Open
Abstract
The WD40-containing E3 ubiquitin ligase RFWD3 has been recently linked to the repair of DNA damage by homologous recombination (HR). Here we have shown that an RFWD3 mutation within the WD40 domain is connected to the genetic disease Fanconi anemia (FA). An individual presented with congenital abnormalities characteristic of FA. Cells from the patient carrying the compound heterozygous mutations c.205_206dupCC and c.1916T>A in RFWD3 showed increased sensitivity to DNA interstrand cross-linking agents in terms of increased chromosomal breakage, reduced survival, and cell cycle arrest in G2 phase. The cellular phenotype was mirrored in genetically engineered human and avian cells by inactivation of RFWD3 or introduction of the patient-derived missense mutation, and the phenotype was rescued by expression of wild-type RFWD3 protein. HR was disrupted in RFWD3-mutant cells as a result of impaired relocation of mutant RFWD3 to chromatin and defective physical interaction with replication protein A. Rfwd3 knockout mice appear to have increased embryonic lethality, are subfertile, show ovarian and testicular atrophy, and have a reduced lifespan resembling that of other FA mouse models. Although RFWD3 mutations have thus far been detected in a single child with FA, we propose RFWD3 as an FA gene, FANCW, supported by cellular paradigm systems and an animal model.
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Affiliation(s)
- Kerstin Knies
- Department of Human Genetics, Biozentrum, University of Wurzburg, Wurzburg, Germany
| | - Shojiro Inano
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan.,Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - María J Ramírez
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona, Bellaterra (Barcelona), Spain.,Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid, Spain
| | - Masamichi Ishiai
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Jordi Surrallés
- Department of Genetics and Microbiology, Universitat Autònoma de Barcelona, Bellaterra (Barcelona), Spain.,Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid, Spain.,Genetics Department, Hospital de Sant Pau, Barcelona, Spain
| | - Minoru Takata
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Detlev Schindler
- Department of Human Genetics, Biozentrum, University of Wurzburg, Wurzburg, Germany
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238
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Chandrasekharappa SC, Chinn SB, Donovan FX, Chowdhury NI, Kamat A, Adeyemo AA, Thomas JW, Vemulapalli M, Hussey CS, Reid HH, Mullikin JC, Wei Q, Sturgis EM. Assessing the spectrum of germline variation in Fanconi anemia genes among patients with head and neck carcinoma before age 50. Cancer 2017; 123:3943-3954. [PMID: 28678401 DOI: 10.1002/cncr.30802] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 03/27/2017] [Accepted: 04/24/2017] [Indexed: 01/02/2023]
Abstract
BACKGROUND Patients with Fanconi anemia (FA) have an increased risk for head and neck squamous cell carcinoma (HNSCC). The authors sought to determine the prevalence of undiagnosed FA and FA carriers among patients with HNSCC as well as an age cutoff for FA genetic screening. METHODS Germline DNA samples from 417 patients with HNSCC aged <50 years were screened for sequence variants by targeted next-generation sequencing of the entire length of 16 FA genes. RESULTS The sequence revealed 194 FA gene variants in 185 patients (44%). The variant spectrum was comprised of 183 nonsynonymous point mutations, 9 indels, 1 large deletion, and 1 synonymous variant that was predicted to effect splicing. One hundred eight patients (26%) had at least 1 rare variant that was predicted to be damaging, and 57 (14%) had at least 1 rare variant that was predicted to be damaging and had been previously reported. Fifteen patients carried 2 rare variants or an X-linked variant in an FA gene. Overall, an age cutoff for FA screening was not identified among young patients with HNSCC, because there were no significant differences in mutation rates when patients were stratified by age, tumor site, ethnicity, smoking status, or human papillomavirus status. However, an increased burden, or mutation load, of FA gene variants was observed in carriers of the genes FA complementation group D2 (FANCD2), FANCE, and FANCL in the HNSCC patient cohort relative to the 1000 Genomes population. CONCLUSIONS FA germline functional variants offer a novel area of study in HNSCC tumorigenesis. FANCE and FANCL, which are components of the core complex, are known to be responsible for the recruitment and ubiquitination, respectively, of FANCD2, a critical step in the FA DNA repair pathway. In the current cohort, the increased mutation load of FANCD2, FANCE, and FANCL variants among younger patients with HNSCC indicates the importance of the FA pathway in HNSCC. Cancer 2017;123:3943-54. © 2017 American Cancer Society.
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Affiliation(s)
- Settara C Chandrasekharappa
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Steven B Chinn
- Department of Otolaryngology-Head and Neck Surgery, The University of Michigan, Ann Arbor, Michigan
| | - Frank X Donovan
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Naweed I Chowdhury
- Department of Otolaryngology-Head and Neck Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Aparna Kamat
- Cancer Genetics and Comparative Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Adebowale A Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - James W Thomas
- Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Meghana Vemulapalli
- Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Caroline S Hussey
- The University of Texas Health Science Center School of Medicine, Houston, Texas
| | - Holly H Reid
- Department of Dermatology, The University of Texas Health Science Center School of Medicine, Houston, Texas
| | - James C Mullikin
- Intramural Sequencing Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Qingyi Wei
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Erich M Sturgis
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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239
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Pilonetto DV, Pereira NF, Bonfim CMS, Ribeiro LL, Bitencourt MA, Kerkhoven L, Floor K, Ameziane N, Joenje H, Gille JJP, Pasquini R. A strategy for molecular diagnostics of Fanconi anemia in Brazilian patients. Mol Genet Genomic Med 2017; 5:360-372. [PMID: 28717661 PMCID: PMC5511800 DOI: 10.1002/mgg3.293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 03/20/2017] [Accepted: 03/24/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Fanconi anemia (FA) is a predominantly autosomal recessive disease with wide genetic heterogeneity resulting from mutations in several DNA repair pathway genes. To date, 21 genetic subtypes have been identified. We aimed to identify the FA genetic subtypes in the Brazilian population and to develop a strategy for molecular diagnosis applicable to routine clinical use. METHODS We screened 255 patients from Hospital de Clínicas, Universidade Federal do Paraná for 11 common FA gene mutations. Further analysis by multiplex ligation-dependent probe amplification (MLPA) for FANCA and Sanger sequencing of all coding exons of FANCA, -C, and -G was performed in cases who harbored a single gene mutation. RESULTS We identified biallelic mutations in 128/255 patients (50.2%): 89, 11, and 28 carried FANCA,FANCC, and FANCG mutations, respectively. Of these, 71 harbored homozygous mutations, whereas 57 had compound heterozygous mutations. In 4/57 heterozygous patients, both mutations were identified by the initial screening, in 51/57 additional analyses was required for classification, and in 2/57 the second mutation remained unidentified. We found 52 different mutations of which 22 were novel. CONCLUSION The proposed method allowed genetic subtyping of 126/255 (49.4%) patients at a significantly reduced time and cost, which makes molecular diagnosis of FA Brazilian patients feasible.
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Affiliation(s)
- Daniela V. Pilonetto
- Immunogenetics LaboratoryHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
| | - Noemi F. Pereira
- Immunogenetics LaboratoryHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
| | - Carmem M. S. Bonfim
- Bone Marrow Transplantation ServiceHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
| | - Lisandro L. Ribeiro
- Bone Marrow Transplantation ServiceHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
| | - Marco A. Bitencourt
- Bone Marrow Transplantation ServiceHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
| | - Lianne Kerkhoven
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Karijn Floor
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Najim Ameziane
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Hans Joenje
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Johan J. P. Gille
- Department of Clinical GeneticsVU University Medical CenterAmsterdamThe Netherlands
| | - Ricardo Pasquini
- Bone Marrow Transplantation ServiceHospital de ClínicasUniversidade Federal do ParanáCuritibaPRBrazil
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240
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Bhatia V, Herrera-Moyano E, Aguilera A, Gómez-González B. The Role of Replication-Associated Repair Factors on R-Loops. Genes (Basel) 2017; 8:E171. [PMID: 28653981 PMCID: PMC5541304 DOI: 10.3390/genes8070171] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 12/12/2022] Open
Abstract
The nascent RNA can reinvade the DNA double helix to form a structure termed the R-loop, where a single-stranded DNA (ssDNA) is accompanied by a DNA-RNA hybrid. Unresolved R-loops can impede transcription and replication processes and lead to genomic instability by a mechanism still not fully understood. In this sense, a connection between R-loops and certain chromatin markers has been reported that might play a key role in R-loop homeostasis and genome instability. To counteract the potential harmful effect of R-loops, different conserved messenger ribonucleoprotein (mRNP) biogenesis and nuclear export factors prevent R-loop formation, while ubiquitously-expressed specific ribonucleases and DNA-RNA helicases resolve DNA-RNA hybrids. However, the molecular events associated with R-loop sensing and processing are not yet known. Given that R-loops hinder replication progression, it is plausible that some DNA replication-associated factors contribute to dissolve R-loops or prevent R-loop mediated genome instability. In support of this, R-loops accumulate in cells depleted of the BRCA1, BRCA2 or the Fanconi anemia (FA) DNA repair factors, indicating that they play an active role in R-loop dissolution. In light of these results, we review our current view of the role of replication-associated DNA repair pathways in preventing the harmful consequences of R-loops.
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Affiliation(s)
- Vaibhav Bhatia
- Andalusian Center for Molecular Biology and Regenerative Medicine-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Av. Américo Vespucio 24, 41092 Seville, Spain.
| | - Emilia Herrera-Moyano
- Andalusian Center for Molecular Biology and Regenerative Medicine-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Av. Américo Vespucio 24, 41092 Seville, Spain.
| | - Andrés Aguilera
- Andalusian Center for Molecular Biology and Regenerative Medicine-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Av. Américo Vespucio 24, 41092 Seville, Spain.
| | - Belén Gómez-González
- Andalusian Center for Molecular Biology and Regenerative Medicine-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Av. Américo Vespucio 24, 41092 Seville, Spain.
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241
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Nistal M, Paniagua R, González-Peramato P, Reyes-Múgica M. Perspectives in Pediatric Pathology, Chapter 22. Testicular Involvement in Systemic Diseases. Pediatr Dev Pathol 2017; 19:431-451. [PMID: 25333836 DOI: 10.2350/14-09-1556-pb.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Normal testicular physiology requires appropriate function of endocrine glands and other tissues. Testicular lesions have been described in disorders involving the hypothalamus-hypophysis, thyroid glands, adrenal glands, pancreas, liver, kidney, and gastrointestinal tract. Testicular abnormalities can also associate with chronic anemia, obesity, and neoplasia. Although many of the disorders that affect the above-mentioned glands and tissues are congenital, acquired lesions may result in hypogonadism in children and adolescents.
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Affiliation(s)
- Manuel Nistal
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Madrid 28029, Spain
| | - Ricardo Paniagua
- 2 Department of Cell Biology, Universidad de Alcala, Madrid, Spain
| | - Pilar González-Peramato
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Madrid 28029, Spain
| | - Miguel Reyes-Múgica
- 3 Department of Pathology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
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242
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Meyer S, Stevens A, Paredes R, Schneider M, Walker MJ, Williamson AJK, Gonzalez-Sanchez MB, Smetsers S, Dalal V, Teng HY, White DJ, Taylor S, Muter J, Pierce A, de Leonibus C, Rockx DAP, Rooimans MA, Spooncer E, Stauffer S, Biswas K, Godthelp B, Dorsman J, Clayton PE, Sharan SK, Whetton AD. Acquired cross-linker resistance associated with a novel spliced BRCA2 protein variant for molecular phenotyping of BRCA2 disruption. Cell Death Dis 2017; 8:e2875. [PMID: 28617445 PMCID: PMC5520920 DOI: 10.1038/cddis.2017.264] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/29/2017] [Accepted: 05/05/2017] [Indexed: 12/25/2022]
Abstract
BRCA2 encodes a protein with a fundamental role in homologous recombination that is essential for normal development. Carrier status of mutations in BRCA2 is associated with familial breast and ovarian cancer, while bi-allelic BRCA2 mutations can cause Fanconi anemia (FA), a cancer predisposition syndrome with cellular cross-linker hypersensitivity. Cancers associated with BRCA2 mutations can acquire chemo-resistance on relapse. We modeled acquired cross-linker resistance with an FA-derived BRCA2-mutated acute myeloid leukemia (AML) platform. Associated with acquired cross-linker resistance was the expression of a functional BRCA2 protein variant lacking exon 5 and exon 7 (BRCA2ΔE5+7), implying a role for BRCA2 splicing for acquired chemo-resistance. Integrated network analysis of transcriptomic and proteomic differences for phenotyping of BRCA2 disruption infers impact on transcription and chromatin remodeling in addition to the DNA damage response. The striking overlap with transcriptional profiles of FA patient hematopoiesis and BRCA mutation associated ovarian cancer helps define and explicate the ‘BRCAness’ profile.
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Affiliation(s)
- Stefan Meyer
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK.,Department of Paediatric and Adolescent Oncology, Royal Manchester Children's Hospital, Manchester, UK.,Young Oncology Unit, Christie Hospital, Manchester, UK
| | - Adam Stevens
- Manchester Academic Health Science Centre, Manchester, UK.,Department of Paediatric Endocrinology, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK
| | - Roberto Paredes
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Marion Schneider
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Michael J Walker
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Andrew J K Williamson
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Maria-Belen Gonzalez-Sanchez
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Stephanie Smetsers
- Department of Clinical Genetics, Section Oncogenetics, VU University Medical Center, Amsterdam, The Netherlands
| | - Vineet Dalal
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Hsiang Ying Teng
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Daniel J White
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Sam Taylor
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Joanne Muter
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Andrew Pierce
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Chiara de Leonibus
- Manchester Academic Health Science Centre, Manchester, UK.,Department of Paediatric Endocrinology, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK
| | - Davy A P Rockx
- Department of Clinical Genetics, Section Oncogenetics, VU University Medical Center, Amsterdam, The Netherlands
| | - Martin A Rooimans
- Department of Clinical Genetics, Section Oncogenetics, VU University Medical Center, Amsterdam, The Netherlands
| | - Elaine Spooncer
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK
| | - Stacey Stauffer
- Mouse Cancer Genetics Program; Center for Cancer Research; Frederick National Laboratory for Cancer Research; National Cancer Institute, Frederick, MD, USA
| | - Kajal Biswas
- Mouse Cancer Genetics Program; Center for Cancer Research; Frederick National Laboratory for Cancer Research; National Cancer Institute, Frederick, MD, USA
| | - Barbara Godthelp
- Department of Toxicogenetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Josephine Dorsman
- Department of Clinical Genetics, Section Oncogenetics, VU University Medical Center, Amsterdam, The Netherlands
| | - Peter E Clayton
- Manchester Academic Health Science Centre, Manchester, UK.,Department of Paediatric Endocrinology, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK
| | - Shyam K Sharan
- Mouse Cancer Genetics Program; Center for Cancer Research; Frederick National Laboratory for Cancer Research; National Cancer Institute, Frederick, MD, USA
| | - Anthony D Whetton
- Stem Cell &Leukaemia Proteomics Laboratory, Manchester Cancer Research Centre, Division of Molecular and Clinical Cancer Sciences, Faculty of Biology, Medicine &Health, University of Manchester, Manchester, UK.,Manchester Academic Health Science Centre, Manchester, UK.,Stoller Biomarker Discovery Centre, University of Manchester, Manchester, UK
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243
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Skvarova Kramarzova K, Osborn MJ, Webber BR, DeFeo AP, McElroy AN, Kim CJ, Tolar J. CRISPR/Cas9-Mediated Correction of the FANCD1 Gene in Primary Patient Cells. Int J Mol Sci 2017; 18:ijms18061269. [PMID: 28613254 PMCID: PMC5486091 DOI: 10.3390/ijms18061269] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/02/2017] [Accepted: 06/09/2017] [Indexed: 11/16/2022] Open
Abstract
Fanconi anemia (FA) is an inherited condition characterized by impaired DNA repair, physical anomalies, bone marrow failure, and increased incidence of malignancy. Gene editing holds great potential to precisely correct the underlying genetic cause such that gene expression remains under the endogenous control mechanisms. This has been accomplished to date only in transformed cells or their reprogrammed induced pluripotent stem cell counterparts; however, it has not yet been reported in primary patient cells. Here we show the ability to correct a mutation in Fanconi anemia D1 (FANCD1) primary patient fibroblasts. The clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system was employed to target and correct a FANCD1 gene deletion. Homologous recombination using an oligonucleotide donor was achieved and a pure population of modified cells was obtained by using inhibitors of poly adenosine diphosphate-ribose polymerase (poly ADP-ribose polymerase). FANCD1 function was restored and we did not observe any promiscuous cutting of the CRISPR/Cas9 at off target sites. This consideration is crucial in the context of the pre-malignant FA phenotype. Altogether we show the ability to correct a patient mutation in primary FANCD1 cells in a precise manner. These proof of principle studies support expanded application of gene editing for FA.
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Affiliation(s)
- Karolina Skvarova Kramarzova
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
- Childhood Leukemia Investigation Prague (CLIP), Department of Pediatric Hematology and Oncology, Second Faculty of Medicine, Charles University, Prague 15006, Czech Republic.
| | - Mark J Osborn
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA.
- Center for Genome Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
- Asan-Minnesota Institute for Innovating Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Beau R Webber
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Anthony P DeFeo
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Amber N McElroy
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Chong Jai Kim
- Asan Institute for Life Sciences, Asan Medical Center, Asan-Minnesota Institute for Innovating Transplantation, Seoul 138-736, Korea.
| | - Jakub Tolar
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA.
- Asan-Minnesota Institute for Innovating Transplantation, University of Minnesota, Minneapolis, MN 55455, USA.
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244
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Walsh MF, Chang VY, Kohlmann WK, Scott HS, Cunniff C, Bourdeaut F, Molenaar JJ, Porter CC, Sandlund JT, Plon SE, Wang LL, Savage SA. Recommendations for Childhood Cancer Screening and Surveillance in DNA Repair Disorders. Clin Cancer Res 2017; 23:e23-e31. [PMID: 28572264 PMCID: PMC5697784 DOI: 10.1158/1078-0432.ccr-17-0465] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/30/2017] [Accepted: 04/20/2017] [Indexed: 01/09/2023]
Abstract
DNA repair syndromes are heterogeneous disorders caused by pathogenic variants in genes encoding proteins key in DNA replication and/or the cellular response to DNA damage. The majority of these syndromes are inherited in an autosomal-recessive manner, but autosomal-dominant and X-linked recessive disorders also exist. The clinical features of patients with DNA repair syndromes are highly varied and dependent on the underlying genetic cause. Notably, all patients have elevated risks of syndrome-associated cancers, and many of these cancers present in childhood. Although it is clear that the risk of cancer is increased, there are limited data defining the true incidence of cancer and almost no evidence-based approaches to cancer surveillance in patients with DNA repair disorders. This article is the product of the October 2016 AACR Childhood Cancer Predisposition Workshop, which brought together experts from around the world to discuss and develop cancer surveillance guidelines for children with cancer-prone disorders. Herein, we focus on the more common of the rare DNA repair disorders: ataxia telangiectasia, Bloom syndrome, Fanconi anemia, dyskeratosis congenita, Nijmegen breakage syndrome, Rothmund-Thomson syndrome, and Xeroderma pigmentosum. Dedicated syndrome registries and a combination of basic science and clinical research have led to important insights into the underlying biology of these disorders. Given the rarity of these disorders, it is recommended that centralized centers of excellence be involved directly or through consultation in caring for patients with heritable DNA repair syndromes. Clin Cancer Res; 23(11); e23-e31. ©2017 AACRSee all articles in the online-only CCR Pediatric Oncology Series.
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Affiliation(s)
| | - Vivian Y Chang
- University of California, Los Angeles, Los Angeles, California
| | - Wendy K Kohlmann
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Hamish S Scott
- Department of Genetics and Molecular Pathology, Centre for Cancer Biology, Adelaide, South Australia
| | | | | | - Jan J Molenaar
- Princess Máxima Center for Pediatric Oncology, Amsterdam, the Netherlands
| | | | | | - Sharon E Plon
- Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Lisa L Wang
- Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
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245
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Abstract
The correct duplication and transmission of genetic material to daughter cells is the primary objective of the cell division cycle. DNA replication and chromosome segregation present both challenges and opportunities for DNA repair pathways that safeguard genetic information. As a consequence, there is a profound, two-way connection between DNA repair and cell cycle control. Here, we review how DNA repair processes, and DNA double-strand break repair in particular, are regulated during the cell cycle to optimize genomic integrity.
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246
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Moghadam AAS, Mahjoubi F, Reisi N, Vosough P. Investigation of FANCA gene in Fanconi anaemia patients in Iran. Indian J Med Res 2017; 143:184-96. [PMID: 27121516 PMCID: PMC4859127 DOI: 10.4103/0971-5916.180206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND & OBJECTIVES Fanconi anaemia (FA) is a syndrome with a predisposition to bone marrow failure, congenital anomalies and malignancies. It is characterized by cellular hypersensitivity to cross-linking agents such as mitomycin C (MMC). In the present study, a new approach was selected to investigate FANCA (Fanconi anaemia complementation group A) gene in patients clinically diagnosed with cellular hypersensitivity to DNA cross-linking agent MMC. METHODS Chromosomal breakage analysis was performed to prove the diagnosis of Fanconi anaemia in 318 families. Of these, 70 families had a positive result. Forty families agreed to molecular genetic testing. In total, there were 27 patients with unknown complementary types. Genomic DNA was extracted and total RNA was isolated from fresh whole blood of the patients. The first-strand cDNA was synthesized and the cDNA of each patient was then tested with 21 pairs of overlapping primers. High resolution melting curve analysis was used to screen FANCA, and LinReg software version 1.7 was utilized for analysis of expression. RESULTS In total, six sequence alterations were identified, which included two stop codons, two frames-shift mutations, one large deletion and one amino acid exchange. FANCA expression was downregulated in patients who had sequence alterations. INTERPRETATION & CONCLUSIONS The results of the present study show that high resolution melting (HRM) curve analysis may be useful in the detection of sequence alteration. It is simpler and more cost-effective than the multiplex ligation-dependent probe amplification (MLPA) procedure.
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Affiliation(s)
| | - Frouzandeh Mahjoubi
- Medical Biotechnology Institute, National Institute of Genetic Engineering & Biotechnology (NIGEB), Tehran, Iran
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247
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Kan Y, Batada NN, Hendrickson EA. Human somatic cells deficient for RAD52 are impaired for viral integration and compromised for most aspects of homology-directed repair. DNA Repair (Amst) 2017; 55:64-75. [PMID: 28549257 DOI: 10.1016/j.dnarep.2017.04.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/25/2017] [Accepted: 04/27/2017] [Indexed: 01/28/2023]
Abstract
Homology-directed repair (HDR) maintains genomic integrity by eliminating lesions such as DNA double-strand breaks (DSBs), interstrand crosslinks (ICLs) and stalled replication forks and thus a deficiency in HDR is associated with genomic instability and cancer predisposition. The mechanism of HDR is best understood and most rigorously characterized in yeast. The inactivation of the fungal radiation sensitive 52 (RAD52) gene, which has both recombination mediator and single-strand annealing (SSA) activities in vitro, leads to severe HDR defects in vivo. Confusingly, however, the inactivation of murine and chicken RAD52 genes resulted in mouse and chicken cells, respectively, that were largely aphenotypic. To clarify this issue, we have generated RAD52 knockout human cell lines. Human RAD52-null cells retain a significant level of SSA activity demonstrating perforce that additional SSA-like activities must exist in human cells. Moreover, we confirmed that the SSA activity associated with RAD52 is involved in, but not absolutely required for, most HDR subpathways. Specifically, a deficiency in RAD52 impaired the repair of DNA DSBs and intriguingly decreased the random integration of recombinant adeno-associated virus (rAAV). Finally, an analysis of pan-cancer genome data from The Cancer Genome Atlas (TCGA) revealed an association between aberrant levels of RAD52 expression and poor overall survival in multiple cancers. In toto, our work demonstrates that RAD52 contributes to the maintenance of genome stability and tumor suppression in human cells.
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Affiliation(s)
- Yinan Kan
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota Medical School, Minneapolis, MN 55455, United States
| | - Nizar N Batada
- Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Eric A Hendrickson
- BMBB Department, University of Minnesota Medical School, 6-155 Jackson Hall, 321 Church St., SE., Minneapolis, MN 55455, United States.
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248
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Ishiai M, Sato K, Tomida J, Kitao H, Kurumizaka H, Takata M. Activation of the FA pathway mediated by phosphorylation and ubiquitination. Mutat Res 2017; 803-805:89-95. [PMID: 28552166 DOI: 10.1016/j.mrfmmm.2017.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 05/04/2017] [Accepted: 05/04/2017] [Indexed: 12/15/2022]
Abstract
Fanconi anemia (FA) is a devastating hereditary condition that impacts genome integrity, leading to clinical features such as skeletal and visceral organ malformations, attrition of bone marrow stem cells, and carcinogenesis. At least 21 proteins, when absent or defective, have been implicated in this disorder, and they together constitute the FA pathway, which functions in detection and repair of, and tolerance to, endogenous DNA damage. The damage primarily handled by the FA pathway has been assumed to be related to DNA interstrand crosslinks (ICLs). The FA pathway is activated upon ICL damage, and a hallmark of this activation is the mono-ubiquitination events of the key FANCD2-FANCI protein complex. Recent data have revealed unexpectedly complex details in the regulation of FA pathway activation by ICLs. In this short review, we summarize the knowledge accumulated over the years regarding how the FA pathway is activated via protein modifications.
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Affiliation(s)
- Masamichi Ishiai
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Koichi Sato
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Junya Tomida
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Hiroyuki Kitao
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - Hitoshi Kurumizaka
- Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan.
| | - Minoru Takata
- Laboratory of DNA Damage Signaling, Department of Late Effects Studies, Radiation Biology Center, Kyoto University, Kyoto, Japan.
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249
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Li Y, Amarachintha S, Wilson AF, Li X, Du W. Persistent response of Fanconi anemia haematopoietic stem and progenitor cells to oxidative stress. Cell Cycle 2017; 16:1201-1209. [PMID: 28475398 DOI: 10.1080/15384101.2017.1320627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Oxidative stress is considered as an important pathogenic factor in many human diseases including Fanconi anemia (FA), an inherited bone marrow failure syndrome with extremely high risk of leukemic transformation. Members of the FA protein family are involved in DNA damage and other cellular stress responses. Loss of FA proteins renders cells hypersensitive to oxidative stress and cancer transformation. However, how FA cells respond to oxidative DNA damage remains unclear. By using an in vivo stress-response mouse strain expressing the Gadd45β-luciferase transgene, we show here that haematopoietic stem and progenitor cells (HSPCs) from mice deficient for the FA gene Fanca or Fancc persistently responded to oxidative stress. Mechanistically, we demonstrated that accumulation of unrepaired DNA damage, particularly in oxidative damage-sensitive genes, was responsible for the long-lasting response in FA HSPCs. Furthermore, genetic correction of Fanca deficiency almost completely abolished the persistent oxidative stress-induced G2/M arrest and DNA damage response in vivo. Our study suggests that FA pathway is an integral part of a versatile cellular mechanism by which HSPCs respond to oxidative stress.
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Affiliation(s)
- Yibo Li
- a College of Pharmacy, South China Normal University , Guangzhou , China.,b Division of Experimental Hematology and Cancer Biology , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - Surya Amarachintha
- b Division of Experimental Hematology and Cancer Biology , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - Andrew F Wilson
- b Division of Experimental Hematology and Cancer Biology , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - Xue Li
- a College of Pharmacy, South China Normal University , Guangzhou , China
| | - Wei Du
- b Division of Experimental Hematology and Cancer Biology , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA.,c Department of Pharmaceutical Sciences , School of Pharmacy, West Virginia University , Morgantown , WV , USA.,d West Virginia University Cancer Institute , Morgantown , WV , USA
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250
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Hoogenboom WS, Klein Douwel D, Knipscheer P. Xenopus egg extract: A powerful tool to study genome maintenance mechanisms. Dev Biol 2017; 428:300-309. [PMID: 28427716 DOI: 10.1016/j.ydbio.2017.03.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/29/2017] [Accepted: 03/29/2017] [Indexed: 01/09/2023]
Abstract
DNA repair pathways are crucial to maintain the integrity of our genome and prevent genetic diseases such as cancer. There are many different types of DNA damage and specific DNA repair mechanisms have evolved to deal with these lesions. In addition to these repair pathways there is an extensive signaling network that regulates processes important for repair, such as cell cycle control and transcription. Despite extensive research, DNA damage repair and signaling are not fully understood. In vitro systems such as the Xenopus egg extract system, have played, and still play, an important role in deciphering the molecular details of these processes. Xenopus laevis egg extracts contain all factors required to efficiently perform DNA repair outside a cell, using mechanisms conserved in humans. These extracts have been used to study several genome maintenance pathways, including mismatch repair, non-homologous end joining, ICL repair, DNA damage checkpoint activation, and replication fork stability. Here we describe how the Xenopus egg extract system, in combination with specifically designed DNA templates, contributed to our detailed understanding of these pathways.
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Affiliation(s)
- Wouter S Hoogenboom
- Hubrecht Institute - KNAW, University Medical Center Utrecht & Cancer GenomiCs Netherlands, The Netherlands
| | - Daisy Klein Douwel
- Hubrecht Institute - KNAW, University Medical Center Utrecht & Cancer GenomiCs Netherlands, The Netherlands
| | - Puck Knipscheer
- Hubrecht Institute - KNAW, University Medical Center Utrecht & Cancer GenomiCs Netherlands, The Netherlands.
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