CLCF1 inhibits energy expenditure via suppressing brown fat thermogenesis

• 成果类型: Article
• 署名作者: Yuan, Youwen; Li, Kangli; Ye, Xueru; Wen, Shiyi; Zhang, Yanan; Teng, Fei; Zhou, Xuan; Deng, Yajuan; Yang, Xiaoyu; Wang, Weiwei; Lin, Jiayang; Luo, Shenjian; Zhang, Peizhen; Shi, Guojun; Zhang, Huijie
• 署名单位: Southern Medical University - China; Southern Medical University - China; Southern Medical University - China; Army Medical University; Sun Yat Sen University; Sun Yat Sen University; Sun Yat Sen University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-11667
• DOI: 10.1073/pnas.2310711121
• 发表日期: 2024-01-16
• 关键词: unfolded protein response; adipose-tissue; cytokine; pathways; insulin; weight; leptin; er

摘要

Brown adipose tissue (BAT) is the main site of nonshivering thermogenesis which plays an important role in thermogenesis and energy metabolism. However, the regulatory factors that inhibit BAT activity remain largely unknown. Here, cardiotrophin-like cytokine factor 1 (CLCF1) is identified as a negative regulator of thermogenesis in BAT. Adenovirus-mediated overexpression of CLCF1 in BAT greatly impairs the thermogenic capacity of BAT and reduces the metabolic rate. Consistently, BAT-specific ablation of CLCF1 enhances the BAT function and energy expenditure under both thermoneutral and cold conditions. Mechanistically, adenylate cyclase 3 (ADCY3) is identified as a downstream target of CLCF1 to mediate its role in regulating thermogenesis. Furthermore, CLCF1 is identified to negatively regulate the PERK-ATF4 signaling axis to modulate the transcriptional activity of ADCY3, which activates the PKA substrate phosphorylation. Moreover, CLCF1 deletion in BAT protects the mice against diet-induced obesity by promoting BAT activation and further attenuating impaired glucose and lipid metabolism. Therefore, our results reveal the essential role of CLCF1 in regulating BAT thermogenesis and suggest that inhibiting CLCF1 signaling might be a potential therapeutic strategy for improving obesity-related metabolic disorders.