由ADAM10介导的β-klotho降解:在衰老的血管内皮细胞中,FGF21抵抗的关键
Yuzhen Huang1,2, Yucong Zhang1,2, Ni Yang1,2
1Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
GeroScience
|December 9, 2024
概括
衰老导致对纤维细胞生长因子21 (FGF21) 的抵抗,纤维细胞生长因子21 (FGF21) 是一种关键的代谢和心血管调节剂. 这种抵抗源于降低的β-klotho和增加的ADAM10,这降解了共受体,损害了FGF21的功能.
科学领域:
- 内分泌学和新陈代谢学
- 血管生物学 血管生物学
- 衰老研究研究 衰老研究
背景情况:
- 纤维细胞生长因子21 (FGF21) 对新陈代谢和心血管调节至关重要.
- 衰老与FGF21耐药性有关,影响其有益作用.
- 了解FGF21抗衰老的机制对于治疗开发至关重要.
研究的目的:
- 研究人类静脉内皮细胞 (HUVECs) 中与衰老相关的FGF21抵抗的分子机制.
- 确定潜在的治疗点,以恢复FGF21在衰老中的敏感性.
主要方法:
- 对年轻与老化的HUVEC进行了转录基因分析.
- 研究β-klotho和ADAM10的表达和功能.
- 在衰老的HUVEC中抑制ADAM10和β-klotho的过度表达.
- 药理上使用FGF21.
主要成果:
- 衰老的HUVECs表现出FGF21调节的基因表达减少,表明耐药性.
- 膜β-klotho的下调和ADAM10的上调在衰老的HUVEC和老鼠大动脉中.
- ADAM10直接降解β-klotho,导致FGF21的耐药性.
- 抑制ADAM10或过度表达β-klotho恢复了FGF21的反应能力.
- 高剂量的FGF21在衰老细胞中克服了抵抗力.
结论:
- 通过ADAM10介导的β-klotho降解是推动FGF21耐药性的关键机制.
- 针对ADAM10/β-klotho轴为与年龄相关的血管功能障碍提供了一个新的治疗策略.
- 施用FGF21可能是血管衰老和相关心血管疾病的有希望的治疗方法.
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