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真核基因表达评论综述™
影响因子: 1.841 5年影响因子: 1.927 SJR: 0.649 SNIP: 0.516 CiteScore™: 1.96

ISSN 打印: 1045-4403
ISSN 在线: 2162-6502

真核基因表达评论综述™

DOI: 10.1615/CritRevEukarGeneExpr.v8.i1.30
pages 43-80

Age-Dependent Modifications of Gene Expression in Human Fibroblasts

Vincent J. Cristofalo
Center for Gerontological Research, Allegheny University of the Health Sciences, MCP ♦ Hahnemann School of Medicine, 2900 Queen Lane, Philadelphia, PA 19129
Craig Volker
Center for Gerontological Research, Allegheny University of the Health Sciences, MCP ♦ Hahnemann School of Medicine, 2900 Queen Lane, Philadelphia, PA 19129
Mary Kay Francis
Center for Gerontological Research, Allegheny University of the Health Sciences, MCP ♦ Hahnemann School of Medicine, 2900 Queen Lane, Philadelphia, PA 19129
Maria Tresini
Center for Gerontological Research, Allegheny University of the Health Sciences, MCP ♦ Hahnemann School of Medicine, 2900 Queen Lane, Philadelphia, PA 19129

ABSTRACT

Normal human fibroblasts exhibit a limited proliferative potential in culture. When populations are serially subcultured, they grow well initially, but ultimately reach a stage when they are no longer able to proliferate in response to mitogenic stimuli. This state is designated "replicative senescence". In addition to failure to proliferate, numerous morphological and physiological changes characterize the senescent phenotype. Both stochastic and genetic mechanisms have been postulated as causal effectors of the aging process. However, the pathway leading to cellular senescence is likely to be complex with numerous changes. In this article we provide an overview of cell and molecular changes that occur during cell aging, with special emphasis on signal transduction pathways and cell cycle proteins that are likely to play key roles in determining the limited replicative life span and the changes that occur.


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