R‐loops cause replication impairment and genome instability during meiosis
R‐loops are harmful structures with a negative impact on transcription and recombination during mitosis, but no information exists for meiosis. We used Saccharomyces cerevisiae and Caenorhabditis elegans THO mutants as a tool to determine the consequences of R‐loops in meiosis. We found that both S....
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/167049 |
| Acceso en línea: | https://hdl.handle.net/11441/167049 https://doi.org/10.1038/embor.2012.119 |
| Access Level: | acceso abierto |
| Palabra clave: | Caenorhabditis elegans genome instability meiotic replication R-loops Saccharomyces cerevisiae |
| Sumario: | R‐loops are harmful structures with a negative impact on transcription and recombination during mitosis, but no information exists for meiosis. We used Saccharomyces cerevisiae and Caenorhabditis elegans THO mutants as a tool to determine the consequences of R‐loops in meiosis. We found that both S. cerevisiae and C. elegans THO mutants show defective meiosis and an impairment of premeiotic replication as well as DNA‐damage accumulation. Importantly, RNase H partially suppressed the replication impairment and the DNA‐damage accumulation. We conclude that R‐loops can form during meiosis causing replication impairment with deleterious results. |
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