Mouse HORMAD1 and HORMAD2, two conserved meiotic chromosomal proteins, are depleted from synapsed chromosome axes with the help of TRIP13 AAA-ATPase
| Autor: | Christian R. Eckmann, Verawan Boonsanay, Scott Keeney, Lukasz Wojtasz, Howard J. Cooke, Michael J. McKay, Katrin Daniel, Maria Jasin, Ignasi Roig, Huiling Xu, Attila Tóth, Ewelina Bolcun-Filas |
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| Přispěvatelé: | Roig, I., Roig, Ignasi |
| Rok vydání: | 2021 |
| Předmět: |
Male
Cancer Research Developmental Biology/Germ Cells Cell Cycle Proteins HORMA domain Mice Spermatocytes DNA Breaks Double-Stranded Genetics (clinical) Genetics Adenosine Triphosphatases 0303 health sciences biology Synaptonemal Complex Autosomes 030302 biochemistry & molecular biology Cell staining AAA proteins Chromatin Genetics and Genomics/Chromosome Biology Synaptonemal complex Meiosis Female Cell Biology/Nuclear Structure and Function Research Article lcsh:QH426-470 Saccharomyces cerevisiae 03 medical and health sciences Prophase Homologous chromosome Animals Molecular Biology/Chromatin Structure Molecular Biology Ecology Evolution Behavior and Systematics 030304 developmental biology Molecular Biology/Recombination Molecular Biology/DNA Repair Chromosome staining Molecular Biology/Chromosome Structure Sex chromosomes Cell Biology Homologous chromosomes biology.organism_classification Mice Inbred C57BL lcsh:Genetics Chromosome Pairing ATPases Associated with Diverse Cellular Activities |
| Zdroj: | Recercat: Dipósit de la Recerca de Catalunya Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) PLoS Genetics PLoS Genetics, Vol 5, Iss 10, p e1000702 (2009) Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname Wojtasz, L, Daniel, K, Roig, I, Bolcun-Filas, E, Xu, H, Boonsanay, V, Eckmann, C R, Cooke, H J, Jasin, M, Keeney, S, McKay, M J & Toth, A 2009, ' Mouse HORMAD1 and HORMAD2, two conserved meiotic chromosomal proteins, are depleted from synapsed chromosome axes with the help of TRIP13 AAA-ATPase ', PLoS Genetics, vol. 5, no. 10, pp. e1000702 . https://doi.org/10.1371/journal.pgen.1000702 |
| DOI: | 10.1371/journal.pgen.1000702 |
| Popis: | Meiotic crossovers are produced when programmed double-strand breaks (DSBs) are repaired by recombination from homologous chromosomes (homologues). In a wide variety of organisms, meiotic HORMA-domain proteins are required to direct DSB repair towards homologues. This inter-homologue bias is required for efficient homology search, homologue alignment, and crossover formation. HORMA-domain proteins are also implicated in other processes related to crossover formation, including DSB formation, inhibition of promiscuous formation of the synaptonemal complex (SC), and the meiotic prophase checkpoint that monitors both DSB processing and SCs. We examined the behavior of two previously uncharacterized meiosis-specific mouse HORMA-domain proteins—HORMAD1 and HORMAD2—in wild-type mice and in mutants defective in DSB processing or SC formation. HORMADs are preferentially associated with unsynapsed chromosome axes throughout meiotic prophase. We observe a strong negative correlation between SC formation and presence of HORMADs on axes, and a positive correlation between the presumptive sites of high checkpoint-kinase ATR activity and hyper-accumulation of HORMADs on axes. HORMADs are not depleted from chromosomes in mutants that lack SCs. In contrast, DSB formation and DSB repair are not absolutely required for depletion of HORMADs from synapsed axes. A simple interpretation of these findings is that SC formation directly or indirectly promotes depletion of HORMADs from chromosome axes. We also find that TRIP13 protein is required for reciprocal distribution of HORMADs and the SYCP1/SC-component along chromosome axes. Similarities in mouse and budding yeast meiosis suggest that TRIP13/Pch2 proteins have a conserved role in establishing mutually exclusive HORMAD-rich and synapsed chromatin domains in both mouse and yeast. Taken together, our observations raise the possibility that involvement of meiotic HORMA-domain proteins in the regulation of homologue interactions is conserved in mammals. Author Summary Generation of haploid gametes in most organisms requires that homologues become connected via crossovers during meiosis. Efficient formation of crossovers depends on HORMA-domain proteins in diverse taxa. These proteins ensure that programmed meiotic DSBs are preferentially repaired from homologues, rather than from sister chromatids. This inter-homologue bias is crucial for homology search and crossovers formation. HORMA-domain proteins have been also implicated in DSB formation, in suppression of synaptonemal complex formation between non-homologous chromosomes, and in the meiotic prophase checkpoint that monitors DSB repair. Despite the importance of HORMA-domain proteins in various organisms, a role for these proteins in mammalian meiosis hasn't been reported. We examined the behaviour of meiotic mouse HORMA-domain proteins—HORMAD1 and HORMAD2—in wild-type and meiotic mutants. HORMAD1/2 preferentially accumulate on unsynapsed chromosome axes. Our data suggest that HORMAD1/2 depletion from chromosomes is a response to synaptonemal complex formation and it that is a conserved process supported by TRIP13/Pch2 AAA-ATPase. Assuming that HORMA-domain functions are conserved in mammals, we speculate that depletion of HORMADs from axes might contribute to the down-regulation of inter-homologue bias and the prophase checkpoint once homology search is completed and synaptonemal complexes form between aligned homologues. |
| Databáze: | OpenAIRE |
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