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5 septembre 2008
- handle: 10670/1.y6shfi
- doi: 10.2741/3207
info:eu-repo/semantics/openAccess
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Biological SciencesSujets proches
Ageing Senescence Age--Physiological effectCiter ce document
Beatrix Grubeck-Loebenstein et al., « The use of genetically engineered model systems for research on human aging », Elektronisches Publikationsportal der Österreichischen Akademie der Wissenschafte, ID : 10.2741/3207
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A major goal in the field of aging research is to identify molecular mechanisms of aging at the cellular level, which are anticipated to form the basis for the development of age-associated dysfunctions and diseases in human beings. A major obstacle to reach this ambitious goal is the fact that genetic and molecular studies with human subjects are laborious and difficult. Recent progress in research into model organisms of aging has allowed to determine precise molecular mechanisms and genetic determinants of the aging process, which appear to be conserved in evolution and some of which apply to human aging as well. The consortium of the authors focuses on aging mechanisms at the cellular level, and exploits the potential of genetic analyses in lower eukaryotic model organisms for a better understanding of regulatory pathways implicated in aging processes. We have established a new database (GiSAO) which provides a unique resource for the analysis of genome-wide expression patterns as being regulated by senescence, apoptosis and oxidative stress in our model systems. This has led to the identification of candidate genes, which are being tested for their impact on lifespan regulation in yeast, the fruit fly Drosophila melanogaster and the nematode C.elegans. Data from the GiSAO database have also identified specific changes in gene expression occurring with aging in human T-cells, endothelial cells, mesenchymal stem cells and prostatic fibroblasts, which will allow us to address ageassociated changes in functional interactions between these various cell types.