It is well recognized that capsaicin increases thermogenesis by enhancing catecholamine secretion from the adrenal medulla. In the present study, rats (5-week old) were administrated with capsaicin (10 mg/kg) with high fat diet for 2 months. The body weights of capsaicin-treated group were decreased by 8% compared to saline-treated rats. We also performed a differential proteomic analysis using 2-DE combined with MS to clarify the molecular mechanism for the thermogenic and anti-obesity effect of capsaicin in white adipose tissue (WAT). Protein mapping of WAT homogenates by 2-DE revealed that numerous proteins showing significant alterations: 11 spots were significantly up-regulated and 10 spots were remarkably down-regulated by capsaicin treatment in comparison to normal diet group. Among them, significant downregulation of heat shock protein 27 (Hsp27), Steap3 protein and up-regulation of olfactory receptor (Olr1434) in obese WAT were reported for the first time in relation to obesity. Most of the identified proteins are associated with lipid metabolism, cytoskeleton, and redox regulation, in which the levels of fatty acid binding protein 4 (FABP4), vimentin, peroxiredoxin were significantly reduced (two-fold), whereas aldo-keto reductase, NAD(P)H dehydrogenase, flavoprotein were increased with capsaicin treatment. These data imply that nonshivering thermogenesis-related proteins as well as anti-obesity related proteins were altered upon capsaicin treatment in WAT, suggesting that capsaicin may be useful phytochemical for attenuating obesity.
키워드
CapsaicinWhite adipose tissueobesity
저자
Jeong In JOO [ Department of Biotechnology, Daegu University ]
Jong Won YUN [ Department of Biotechnology, Daegu University ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
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