Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1.
We previously reported that global deletion of insulin receptor substrate protein 1 (Irs1) extends lifespan and increases resistance to several age-related pathologies in female mice. However, no effect on lifespan was observed in male Irs1 null mice. We suggested at the time that the lack of any ef...
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Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0016144&type=printable |
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| author | Colin Selman Linda Partridge Dominic J Withers |
| author_facet | Colin Selman Linda Partridge Dominic J Withers |
| author_sort | Colin Selman |
| collection | DOAJ |
| description | We previously reported that global deletion of insulin receptor substrate protein 1 (Irs1) extends lifespan and increases resistance to several age-related pathologies in female mice. However, no effect on lifespan was observed in male Irs1 null mice. We suggested at the time that the lack of any effect in males might have been due to a sample size issue. While such lifespan studies are essential to our understanding of the aging process, they are generally based on survival curves derived from single experiments, primarily due to time and economic constraints. Consequently, the robustness of such findings as a basis for further investigation has been questioned. We have therefore measured lifespan in a second, separate cohort of Irs1 null female mice, and show that, consistent with our previous finding, global deletion of Irs1 significantly extends lifespan in female mice. In addition, an augmented and completed study demonstrates lifespan extension in male Irs1 null mice. Therefore, we show that reduced IRS1-dependent signalling is a robust mechanism through which mammalian lifespan can be modulated. |
| format | Article |
| id | doaj-art-dacf583240614f0a98bc4f0e2f8ef42e |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-dacf583240614f0a98bc4f0e2f8ef42e2025-08-20T02:09:04ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-0161e1614410.1371/journal.pone.0016144Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1.Colin SelmanLinda PartridgeDominic J WithersWe previously reported that global deletion of insulin receptor substrate protein 1 (Irs1) extends lifespan and increases resistance to several age-related pathologies in female mice. However, no effect on lifespan was observed in male Irs1 null mice. We suggested at the time that the lack of any effect in males might have been due to a sample size issue. While such lifespan studies are essential to our understanding of the aging process, they are generally based on survival curves derived from single experiments, primarily due to time and economic constraints. Consequently, the robustness of such findings as a basis for further investigation has been questioned. We have therefore measured lifespan in a second, separate cohort of Irs1 null female mice, and show that, consistent with our previous finding, global deletion of Irs1 significantly extends lifespan in female mice. In addition, an augmented and completed study demonstrates lifespan extension in male Irs1 null mice. Therefore, we show that reduced IRS1-dependent signalling is a robust mechanism through which mammalian lifespan can be modulated.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0016144&type=printable |
| spellingShingle | Colin Selman Linda Partridge Dominic J Withers Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. PLoS ONE |
| title | Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. |
| title_full | Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. |
| title_fullStr | Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. |
| title_full_unstemmed | Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. |
| title_short | Replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1. |
| title_sort | replication of extended lifespan phenotype in mice with deletion of insulin receptor substrate 1 |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0016144&type=printable |
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