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The great majority of cases of the Hutchinson-Gilford progeroid syndrome (HGPS) (“Progeria of Childhood‘’) are caused by a single nucleotide mutation (1824 C->T) in the LMNA gene which encodes lamin A and C, nuclear intermediate filaments that are important components of the nuclear lamina. The resultant mutant protein (Δ50 lamin A) is thought to act in a dominant fashion. We exploited RNA interference...
In C. elegans, the transcription factor DAF-16 promotes longevity in response to reduced insulin/IGF-1 signaling or germline ablation. In this study, we have asked how different tissues interact to specify the lifespan of the animal. We find that several tissues act as signaling centers. In particular, DAF-16 activity in the intestine, which is also the animal's adipose tissue, completely restores...
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