Research Project
Grant-in-Aid for Challenging Research (Exploratory)
Non-shivering thermogenesis in adipocytes provides defense against low temperatures and obesity development, but the underlying regulatory mechanism remains to be fully clarified. Adipose-specific Pin1 KO (adPin1 KO) mice showed enhanced transcription of thermogenic genes, including UCP-1, and tolerance to hypothermia when exposed to cold (temperature at 4℃). In addition, adPin1 KO mice were resistant to high fat diet-induced obesity and glucose intolerance. Searching for Pin1 binding proteins as well as subsequent overexpression and gene silencing experiments revealed that Pin1 binds to PRDM16 and thereby promotes its degradation through the ubiquitin-proteasome system.Taken together, these observations indicate Pin1 to be a negative regulator of non-shivering thermogenesis, which involves the regulation of thermogenesis in response to nutrient conditions and cold exposure.
体内からの熱産生は、基礎代謝量に影響している。従って、脂肪細胞からの熱産生量の減少が、肥満や脂肪感を含めたメタボリックシンドロームの発症に影響しているが、このプロセスにPin1の発現量増加が関与していることが明らかとなった。実際、Pin1の遺伝子欠損マウスは、基礎代謝が高く、肥満に抵抗性を示す。我々は、従って、Pin1の活性を抑制する薬剤を開発し、肥満やNASHへの治療薬への応用を目指しており、社会的意義も高い。
All 2020 2019 2018
All Journal Article (12 results) (of which Int'l Joint Research: 11 results, Peer Reviewed: 12 results, Open Access: 12 results) Presentation (10 results) (of which Invited: 1 results)
Cancer Lett.
Volume: 470 Pages: 106-114
Biochem. Biophys. Res. Commun.
Volume: 22 Pages: 100757-100757
Diabetol. Metab. Syndr.
Volume: 11 Pages: 57-57
Cell Rep.
Volume: 26 Pages: 3221-3230
Cells
Volume: 8 Pages: 1545-1545
Int. J. Mol. Sci.
Volume: 20 Pages: 4680-4680
Oncotarget
Volume: 10 Pages: 1637-1648
Cell Rep
Int J Mol Sci.
Volume: 19
Curr Med Chem.
Volume: 10 Pages: 2174-2174
Volume: 9 Pages: 33871-33883