在CRTC3中,我们将catecholamine信号与能量平衡联系起来
Youngsup Song1, Judith Altarejos, Mark O Goodarzi
1The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA.
Nature
|December 18, 2010
概括
联合激活剂Crtc3通过削弱脂肪细胞中β-上腺素受体的影响来促进肥胖. 一种常见的CRTC3变种与人类人口中的肥胖有关.
科学领域:
- 代谢调节 代谢调节 代谢调节
- 脂肪组织生物学 脂肪组织生物学
- 肥胖研究的研究.
背景情况:
- 莱普通过同情神经系统激活来调节能量平衡.
- 脂肪细胞中的β-上腺素受体信号驱动能量消耗通过脂解和脂肪酸氧化.
- 受到干扰的甲基荷胺信号传递与肥胖和胰岛素抵抗有关.
研究的目的:
- 调查CREB联合激活剂Crtc3在肥胖中的作用.
- 阐明Crtc3影响脂肪组织中β-上腺素受体信号传递的机制.
主要方法:
- 研究Crtc3的激活,以响应catecholamine的信号.
- 评估了Crtc3对腺环酶活性和Rgs2表达的影响.
- 检查了人类CRTC3变异与墨西哥裔美国人群体脂肪的关联.
主要成果:
- 发现Crtc3可以减弱脂肪组织中的β-上腺素受体信号传递.
- 激活Crtc3通过上调Rgs2表达来降低腺环酶活性.
- 一种常见的人类CRTC3变异,具有较高的转录活性与脂肪相关.
结论:
- 脂肪细胞Crtc3在促进肥胖方面发挥着作用.
- 通过其对脂肪细胞信号传递的影响,Crtc3可能会导致人类肥胖的发展.
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