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Martínez-Marchal A, Huang Y, Guillot-Ferriols MT, Ferrer-Roda M, Guixé A, Garcia-Caldés M, Roig I. The DNA damage response is required for oocyte cyst breakdown and follicle formation in mice. PLoS Genet 2020; 16:e1009067. [PMID: 33206637 PMCID: PMC7710113 DOI: 10.1371/journal.pgen.1009067] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 12/02/2020] [Accepted: 08/20/2020] [Indexed: 01/03/2023] Open
Abstract
Mammalian oogonia proliferate without completing cytokinesis, forming cysts. Within these, oocytes differentiate and initiate meiosis, promoting double-strand break (DSBs) formation, which are repaired by homologous recombination (HR) causing the pairing and synapsis of the homologs. Errors in these processes activate checkpoint mechanisms, leading to apoptosis. At the end of prophase I, in contrast with what is observed in spermatocytes, oocytes accumulate unrepaired DSBs. Simultaneously to the cyst breakdown, there is a massive oocyte death, which has been proposed to be necessary to enable the individualization of the oocytes to form follicles. Based upon all the above-mentioned information, we hypothesize that the apparently inefficient HR occurring in the oocytes may be a requirement to first eliminate most of the oocytes and enable cyst breakdown and follicle formation. To test this idea, we compared perinatal ovaries from control and mutant mice for the effector kinase of the DNA Damage Response (DDR), CHK2. We found that CHK2 is required to eliminate ~50% of the fetal oocyte population. Nevertheless, the number of oocytes and follicles found in Chk2-mutant ovaries three days after birth was equivalent to that of the controls. These data revealed the existence of another mechanism capable of eliminating oocytes. In vitro inhibition of CHK1 rescued the oocyte number in Chk2-/- mice, implying that CHK1 regulates postnatal oocyte death. Moreover, we found that CHK1 and CHK2 functions are required for the timely breakdown of the cyst and to form follicles. Thus, we uncovered a novel CHK1 function in regulating the oocyte population in mice. Based upon these data, we propose that the CHK1- and CHK2-dependent DDR controls the number of oocytes and is required to properly break down oocyte cysts and form follicles in mammals.
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Affiliation(s)
- Ana Martínez-Marchal
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Yan Huang
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Maria Teresa Guillot-Ferriols
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Mònica Ferrer-Roda
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Anna Guixé
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Montserrat Garcia-Caldés
- Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Unitat de Biologia Cel·lular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Ignasi Roig
- Unitat de Citologia i Histologia, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Grup d'Inestabilitat i Integritat del genoma, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
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Pacheco S, Maldonado-Linares A, Garcia-Caldés M, Roig I. ATR function is indispensable to allow proper mammalian follicle development. Chromosoma 2019; 128:489-500. [PMID: 31489491 DOI: 10.1007/s00412-019-00723-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 08/01/2019] [Accepted: 08/13/2019] [Indexed: 12/14/2022]
Abstract
Mammalian female fertility relies on the proper development of follicles. Right after birth in the mouse, oocytes associate with somatic ovarian cells to form follicles. These follicles grow during the adult lifetime to produce viable gametes. In this study, we analyzed the role of the ATM and rad3-related (ATR) kinase in mouse oogenesis and folliculogenesis using a hypomorphic mutation of the Atr gene (Murga et al. 2009). Female mice homozygotes for this allele have been reported to be sterile. Our data show that female meiotic prophase is not grossly altered when ATR levels are reduced. However, follicle development is substantially compromised, since Atr mutant ovaries present a decrease of growing follicles. Comprehensive analysis of follicular cell death and proliferation suggest that wild-type levels of ATR are required to achieve optimal follicular development. Altogether, these findings suggest that reduced ATR expression causes sterility due to defects in follicular progression rather than in meiotic recombination. We discuss the implications of these findings for the use of ATR inhibitors such as anti-cancer drugs and its possible side-effects on female fertility.
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Affiliation(s)
- Sarai Pacheco
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,MRC Clinical Sciences Centre, Faculty of Medicine, Imperial College London, Du Cane Road, London, W12 0NN, UK
| | - Andros Maldonado-Linares
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Montserrat Garcia-Caldés
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Ignasi Roig
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain. .,Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.
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3
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Puig P, Barceló A, Lahoz R, Niubó À, Jiménez J, Soler-López M, Donovan MJ, Navarro J, Camps J, Garcia-Caldés M, Etxeberria F, Miró R. Genetic identification of a war-evacuated child in search of his own identity for more than seventy years. Forensic Sci Int 2019; 298:312-315. [PMID: 30925350 DOI: 10.1016/j.forsciint.2019.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/02/2019] [Accepted: 03/10/2019] [Indexed: 11/25/2022]
Abstract
V. M. E. was evacuated when he was a young boy in 1939. He left an aunt and cousins in Spain (G. E. family). He was adopted in Belgium by the D. family and thus his new name became V. D. He has been unable to remember his childhood before his adoption, a symptomatology compatible with amnesia for personal identity, presumably because he may have suffered a head contusion before or during his exodus. Identification tests were performed on blood samples from V. D. and V. G. E., a mitochondrial cousin of the missing boy. V. G. E. and the missing boy have a common mitochondrial ancestor, their maternal grandmother. The mitochondrial profile of both samples turned out to be highly specific, which allowed the genetic identification of V. D. as V. M. E. As a result, V. D. has reclaimed his past and reunited with his former family in Spain after more than seven decades. As far as we know, this is the first report describing the application of mitochondrial DNA in the identification of a person evacuated during the Spanish Civil War suffering from amnesia for personal identity.
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Affiliation(s)
- Pere Puig
- Genetic Identification Group, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain.
| | - Anna Barceló
- Servei de Genòmica i Bioinformàtica, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Roger Lahoz
- Servei de Genòmica i Bioinformàtica, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Àngels Niubó
- Genetic Identification Group, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Jimi Jiménez
- Aranzadi Zientzia Elkartea, Donostia - San Sebastián, Gipuzkoa, Spain
| | | | - Michael J Donovan
- Icahn School of Medicine at Mt. Sinai, Department of Pathology, New York City, NY, USA
| | - Joaquima Navarro
- Genetic Identification Group, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Jordi Camps
- Genetic Identification Group, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | - Francisco Etxeberria
- Forensic and Legal Medicine Department. Universidad del País Vasco, Gipuzkoa, Spain
| | - Rosa Miró
- Genetic Identification Group, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
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Pacheco S, Maldonado-Linares A, Marcet-Ortega M, Rojas C, Martínez-Marchal A, Fuentes-Lazaro J, Lange J, Jasin M, Keeney S, Fernández-Capetillo O, Garcia-Caldés M, Roig I. ATR is required to complete meiotic recombination in mice. Nat Commun 2018; 9:2622. [PMID: 29977027 PMCID: PMC6033890 DOI: 10.1038/s41467-018-04851-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 05/24/2018] [Indexed: 01/08/2023] Open
Abstract
Precise execution of recombination during meiosis is essential for forming chromosomally-balanced gametes. Meiotic recombination initiates with the formation and resection of DNA double-strand breaks (DSBs). Cellular responses to meiotic DSBs are critical for efficient repair and quality control, but molecular features of these remain poorly understood, particularly in mammals. Here we report that the DNA damage response protein kinase ATR is crucial for meiotic recombination and completion of meiotic prophase in mice. Using a hypomorphic Atr mutation and pharmacological inhibition of ATR in vivo and in cultured spermatocytes, we show that ATR, through its effector kinase CHK1, promotes efficient RAD51 and DMC1 assembly at RPA-coated resected DSB sites and establishment of interhomolog connections during meiosis. Furthermore, our findings suggest that ATR promotes local accumulation of recombination markers on unsynapsed axes during meiotic prophase to favor homologous chromosome synapsis. These data reveal that ATR plays multiple roles in mammalian meiotic recombination.
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Affiliation(s)
- Sarai Pacheco
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Andros Maldonado-Linares
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Marina Marcet-Ortega
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Cristina Rojas
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Ana Martínez-Marchal
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Judit Fuentes-Lazaro
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Julian Lange
- Molecular Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Maria Jasin
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Scott Keeney
- Molecular Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | | | - Montserrat Garcia-Caldés
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain
| | - Ignasi Roig
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain.
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Spain.
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Reig-Viader R, Capilla L, Vila-Cejudo M, Garcia F, Anguita B, Garcia-Caldés M, Ruiz-Herrera A. Telomere homeostasis is compromised in spermatocytes from patients with idiopathic infertility. Fertil Steril 2014; 102:728-738.e1. [DOI: 10.1016/j.fertnstert.2014.06.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/04/2014] [Accepted: 06/04/2014] [Indexed: 01/06/2023]
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Segura J, Ferretti L, Ramos-Onsins S, Capilla L, Farré M, Reis F, Oliver-Bonet M, Fernández-Bellón H, Garcia F, Garcia-Caldés M, Robinson TJ, Ruiz-Herrera A. Evolution of recombination in eutherian mammals: insights into mechanisms that affect recombination rates and crossover interference. Proc Biol Sci 2013; 280:20131945. [PMID: 24068360 DOI: 10.1098/rspb.2013.1945] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Recombination allows faithful chromosomal segregation during meiosis and contributes to the production of new heritable allelic variants that are essential for the maintenance of genetic diversity. Therefore, an appreciation of how this variation is created and maintained is of critical importance to our understanding of biodiversity and evolutionary change. Here, we analysed the recombination features from species representing the major eutherian taxonomic groups Afrotheria, Rodentia, Primates and Carnivora to better understand the dynamics of mammalian recombination. Our results suggest a phylogenetic component in recombination rates (RRs), which appears to be directional, strongly punctuated and subject to selection. Species that diversified earlier in the evolutionary tree have lower RRs than those from more derived phylogenetic branches. Furthermore, chromosome-specific recombination maps in distantly related taxa show that crossover interference is especially weak in the species with highest RRs detected thus far, the tiger. This is the first example of a mammalian species exhibiting such low levels of crossover interference, highlighting the uniqueness of this species and its relevance for the study of the mechanisms controlling crossover formation, distribution and resolution.
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Affiliation(s)
- Joana Segura
- Genome Integrity and Instability Group, Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona, , Barcelona, Spain, Center for Research in Agricultural Genomics CSIC-IRTA-UAB-UB, Universitat Autònoma de Barcelona, , Barcelona, Spain, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, , Barcelona, Spain, Servei de Cultius Cel·lulars (SCC, SCAC), Universitat Autònoma de Barcelona, , Barcelona, Spain, Parc Zoològic de Barcelona, Parc de la Ciutadella s/n, 08003 Barcelona, Spain, Evolutionary Genomics Group, Department of Botany and Zoology, University of Stellenbosch, , Matieland, South Africa
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Garcia-Cruz R, Pacheco S, Brieño MA, Steinberg ER, Mudry MD, Ruiz-Herrera A, Garcia-Caldés M. A comparative study of the recombination pattern in three species of Platyrrhini monkeys (primates). Chromosoma 2011; 120:521-30. [PMID: 21735165 DOI: 10.1007/s00412-011-0329-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 05/30/2011] [Accepted: 06/23/2011] [Indexed: 01/26/2023]
Abstract
Homologous chromosomes exchange genetic information through recombination during meiotic synapsis, a process that increases genetic diversity and is fundamental to sexual reproduction. Meiotic studies in mammalian species are scarce and mainly focused on human and mouse. Here, the meiotic recombination events were determined in three species of Platyrrhini monkeys (Cebus libidinosus, Cebus nigritus and Alouatta caraya) by analysing the distribution of MLH1 foci at the stage of pachytene. Moreover, the combination of immunofluorescence and fluorescent in situ hybridisation has enabled us to construct recombination maps of primate chromosomes that are homologous to human chromosomes 13 and 21. Our results show that (a) the overall number of MLH1 foci varies among all three species, (b) the presence of heterochromatin blocks does not have a major influence on the distribution of MLH1 foci and (c) the distribution of crossovers in the homologous chromosomes to human chromosomes 13 and 21 are conserved between species of the same genus (C. libidinosus and C. nigritus) but are significantly different between Cebus and Alouatta. This heterogeneity in recombination behaviour among Ceboidea species may reflect differences in genetic diversity and genome composition.
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Affiliation(s)
- Raquel Garcia-Cruz
- Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, UAB Campus, Bellaterra, Spain
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Garcia-Cruz R, Robles P, Steinberg ER, Camats N, Brieño MA, Garcia-Caldés M, Mudry MD. Pairing and recombination features during meiosis in Cebus paraguayanus (Primates: Platyrrhini). BMC Genet 2009; 10:25. [PMID: 19500368 PMCID: PMC2702343 DOI: 10.1186/1471-2156-10-25] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Accepted: 06/05/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Among neotropical Primates, the Cai monkey Cebus paraguayanus (CPA) presents long, conserved chromosome syntenies with the human karyotype (HSA) as well as numerous C+ blocks in different chromosome pairs.In this study, immunofluorescence (IF) against two proteins of the Synaptonemal Complex (SC), namely REC8 and SYCP1, two recombination protein markers (RPA and MLH1), and one protein involved in the pachytene checkpoint machinery (BRCA1) was performed in CPA spermatocytes in order to analyze chromosome meiotic behavior in detail. RESULTS Although in the vast majority of pachytene cells all autosomes were paired and synapsed, in a small number of nuclei the heterochromatic C-positive terminal region of bivalent 11 remained unpaired. The analysis of 75 CPA cells at pachytene revealed a mean of 43.22 MLH1 foci per nucleus and 1.07 MLH1 foci in each CPA bivalent 11, always positioned in the region homologous to HSA chromosome 21. CONCLUSION Our results suggest that C blocks undergo delayed pairing and synapsis, although they do not interfere with the general progress of pairing and synapsis.
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Affiliation(s)
- Raquel Garcia-Cruz
- Unitat de Biologia Cellular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain
| | - Pedro Robles
- Unitat de Biologia Cellular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain
| | - Eliana R Steinberg
- Grupo de Investigación en Biología Evolutiva (GIBE), CONICET, Departamento de Ecología, Genética y Evolución, FCEyN, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Nuria Camats
- Unitat de Biologia Cellular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain
| | - Miguel A Brieño
- Unitat de Biologia Cellular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain
| | - Montserrat Garcia-Caldés
- Unitat de Biologia Cellular i Genètica Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain
- Grupo de Investigación en Biología Evolutiva (GIBE), Departamento de Ecología, Genética y Evolución, FCEyN, UBA, Cdad, Universitaria, Pabellón II, 4to Piso, Lab 46 (1428 EHA), Cdad, Autónoma de Bs As, Buenos Aires, Argentina
| | - Marta D Mudry
- Grupo de Investigación en Biología Evolutiva (GIBE), CONICET, Departamento de Ecología, Genética y Evolución, FCEyN, Universidad de Buenos Aires, Buenos Aires, Argentina
- Grupo de Investigación en Biología Evolutiva (GIBE), Departamento de Ecología, Genética y Evolución, FCEyN, UBA, Cdad, Universitaria, Pabellón II, 4to Piso, Lab 46 (1428 EHA), Cdad, Autónoma de Bs As, Buenos Aires, Argentina
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Robles P, Roig I, Garcia R, Brieñ M, Martin M, Barbero JL, Cabero LI, Garcia-Caldés M. Analysis of recombination along chromosome 21 during human female pachytene stage. Reprod Biomed Online 2009; 18:784-94. [DOI: 10.1016/s1472-6483(10)60027-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Roig I, Garcia-Caldés M. Cytological techniques to study human female meiotic prophase. Methods Mol Biol 2009; 558:419-431. [PMID: 19685338 DOI: 10.1007/978-1-60761-103-5_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Most of the human aneuploidies have a maternal origin. This feature makes the study of human female meiosis a fundamental topic to understand the reasons leading to this important social problem. Unfortunately, due to sample collection difficulties, not many studies have been performed on human female meiotic prophase. In this chapter we present a comprehensive collection of protocols that allows the study of human female meiotic prophase through different technical approaches using both spread and structurally preserved oocytes.
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Affiliation(s)
- Ignasi Roig
- Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
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