Bioorg Med Chem. 2009 Nov 15;17(22):7831-40. Epub 2009 Sep 6.

The lifespan-promoting effect of acetic acid and Reishi polysaccharide.

Chuang MH, Chiou SH, Huang CH, Yang WB, Wong CH.

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Genomics Research Center, Academia Sinica, Taipei 115, Taiwan.

Abstract

Using Caenorhabditis elegans as a model organism, various natural substances and commercial health-food supplements were screened to evaluate their effects on longevity. Among the substances tested, acetic acid and Reishi polysaccharide fraction 3 (RF3) were shown to increase the expression of the lifespan and longevity-related transcription factor DAF-16 in C. elegans. We have shown that RF3 activates DAF-16 expression via TIR-1 receptor and MAPK pathway whereas acetic acid inhibits the trans-membrane receptor DAF-2 of the insulin/IGF-1 pathway to indirectly activate DAF-16 expression. In addition, a mixture of acetic acid and RF3 possesses a combined effect 30-40% greater than either substance used alone. A proteomic analysis of C. elegans using 2-DE and LC-MS/MS was then carried out, and 15 differentially expressed proteins involved in the lifespan-promoting activity were identified.

PMID:: 19837596; [PubMed - indexed for MEDLINE]

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