Werner syndrome protein limits MYC-induced cellular senescence

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Werner syndrome protein limits MYC-induced cellular senescence.

The MYC oncoprotein is a transcription factor that coordinates cell growth and division. MYC overexpression exacerbates genomic instability and sensitizes cells to apoptotic stimuli. Here we demonstrate that MYC directly stimulates transcription of the human Werner syndrome gene, WRN, which encodes a conserved RecQ helicase. Loss-of-function mutations in WRN lead to genomic instability, an elev...

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Accelerated methylation of ribosomal RNA genes during the cellular senescence of Werner syndrome fibroblasts.

Ribosomal DNA (rDNA) metabolism has been implicated in cellular and organismal aging. The role of rDNA in premature and normal human aging was investigated by measuring rDNA gene copy number, the level of rDNA methylation, and rRNA expression during the in vitro senescence of primary fibroblasts from normal (young and old) donors and from Werner syndrome (WS) patients. In comparison to their no...

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Werner Syndrome

Werner Syndrome (WS) is an autosomal recessive disease that leads to the premature manifestation of clinical symptoms associated with normal aging. Clinical symptoms include: short stature, graying/loss of hair, osteoporosis, cataracts, atherosclerosis, type II diabetes, hypogonadism, skin ulcers, reduced fertility, and high incidence of malignant neoplasms. They appear in one’s 20’s and 30’s, ...

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ژورنال

عنوان ژورنال: Genes & Development

سال: 2003

ISSN: 0890-9369

DOI: 10.1101/gad.1100303