Activation of transient receptor potential vanilloid 3 channel suppresses adipogenesis

Sin Ying Cheung, Yu Huang, Hiu Yee KWAN, Hau Yin Chung*, Xiaoqiang Yao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The present study shows that activation of the transient receptor potential vanilloid 3 channel (TRPV3) suppresses adipocyte differentiation. We also found that a major functional catechin compound in green tea and cocoa, (-)-epicatechin, exerts antiadipogenic effects in the adipocytes through direct activation of TRPV3. TRPV3 was detected in the 3T3-L1 adipocytes using immunohistochemistry and semiquantitative PCR. TRPV3 activation by activators (-)-epicatechin and diphenylborinic anhydride was determined using live cell fluorescent Ca2+ imaging and patch-clamp electrophysiology. Using RNA interference, immunoblotting, and Oil red O staining, we found that the TRPV3 agonists prevented adipogenesis by inhibiting the phosphorylation of insulin receptor substrate 1, the downstream phosphoinositide 3-kinase/Akt/forkhead box protein O1 axis, and the expression of the adipogenic genes peroxisome proliferator-activated receptor γ and CCAAT/enhancer-binding protein α. TRPV3 overexpression hindered adipogenesis in the 3T3-L1 cells. In vivo studies showed that chronic treatment with the TRPV3 activators prevented adipogenesis and weight gain in the mice fed on high-fat diets. Moreover, TRPV3 expression was reduced in the visceral adipose tissue from mice fed on high-fat diets andobese(ob/ob)anddiabetic(db/m+)mice. In conclusion, our study illustrates the antiadipogenic role of TRPV3 in the adipocytes.

Original languageEnglish
Pages (from-to)2074-2086
Number of pages13
JournalEndocrinology
Volume156
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015

Scopus Subject Areas

  • Endocrinology

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