| Autor: |
Ryo Ito, Shiyu Xie, Myagmar Tumenjargal, Yuto Sugahara, Chaoran Yang, Hiroki Takahashi, Makoto Arai, Shin-Ichi Inoue, Aoi Uchida, Kenji Nakano, Hyunmi Choi, Ge Yang, Yanan Zhao, Rei Yamaguchi, Hitomi Jin, Hina Sagae, Youichiro Wada, Toshiya Tanaka, Hiroshi Kimura, Tatsuhiko Kodama, Hiroyuki Aburatani, Kazuhisa Takeda, Takeshi Inagaki, Timothy F. Osborne, Takeshi Yoneshiro, Yoshihiro Matsumura, Juro Sakai |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
iScience, Vol 27, Iss 4, Pp 109398- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2589-0042 |
| DOI: |
10.1016/j.isci.2024.109398 |
| Popis: |
Summary: Mitochondria play a vital role in non-shivering thermogenesis in both brown and subcutaneous white adipose tissues (BAT and scWAT, respectively). However, specific regulatory mechanisms driving mitochondrial function in these tissues have been unclear. Here we demonstrate that prolonged activation of β-adrenergic signaling induces epigenetic modifications in scWAT, specifically targeting the enhancers for the mitochondria master regulator genes Pgc1a/b. This is mediated at least partially through JMJD1A, a histone demethylase that in response to β-adrenergic signals, facilitates H3K9 demethylation of the Pgc1a/b enhancers, promoting mitochondrial biogenesis and the formation of beige adipocytes. Disruption of demethylation activity of JMJD1A in mice impairs activation of Pgc1a/b driven mitochondrial biogenesis and limits scWAT beiging, contributing to reduced energy expenditure, obesity, insulin resistance, and metabolic disorders. Notably, JMJD1A demethylase activity is not required for Pgc1a/b dependent thermogenic capacity of BAT especially during acute cold stress, emphasizing the importance of scWAT thermogenesis in overall energy metabolism. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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