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雌激素通过NAMPT调节的ER应激反应来对抗与年龄相关的色脂肪生成的下降
Jooman Park1, Ruoci Hu1,2, Yanyu Qian1
1Department of Physiology and Biophysics, College of Medicine, University of Illinois Chicago, Chicago, IL, USA.
Nature aging
|June 10, 2024
概括
雌激素 (E2) 治疗通过激活NAMPT信号,提高能量消耗和葡萄糖耐受性来逆转与年龄相关的热原色脂肪细胞的衰退. 这一途径还抑制了与年龄相关的内质网膜压力.
科学领域:
- 代谢性疾病研究研究.
- 脂肪细胞生物学 脂肪细胞生物学
- 老龄化和新陈代谢
背景情况:
- 热生色脂肪细胞对代谢健康至关重要,但随着年龄的增长而下降.
- 雌激素 (E2) 水平随着年龄的增长而下降,可能会影响色脂肪细胞的功能.
- 色脂肪细胞与年龄相关的下降有助于代谢功能障碍.
研究的目的:
- 研究雌激素 (E2) 在抵消与年龄相关的色脂肪细胞衰减中的作用.
- 阐明E2对色脂肪生成的影响背后的分子机制.
- 探索针对E2-NAMPT途径进行代谢健康的治疗策略.
主要方法:
- 用雌激素治疗老年小鼠 (E2).
- 评估色脂肪生成,能量消耗和耐葡萄糖.
- 研究尼古丁胺酸基转移酶 (NAMPT) 信号通路.
- 对NAMPT信号的遗传和药理向.
主要成果:
- 在老年小鼠中,E2治疗恢复了感冒诱导的色脂肪形成.
- E2提高了能量消耗和改善了葡萄糖耐受性.
- NAMPT被确定为E2诱导的色脂肪细胞形成的关键媒介.
- 向NAMPT通过增加原生细胞和抑制ER压力恢复了色脂肪细胞的形成.
结论:
- 雌激素 (E2) 可以抵消与年龄相关的色脂肪细胞功能障碍.
- 在衰老过程中,E2-NAMPT信号通路对于保持色脂肪细胞功能至关重要.
- 针对NAMPT提供了与年龄相关的代谢疾病的潜在治疗策略.
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