准内皮KDM5A以减轻衰老和改善与年龄相关的代谢异常
Rifeng Gao1, Lifeng Liang2, Ling Yang3
1Department of Cardiac Surgery, The Second Affiliated Hospital, Zhejiang University, Hangzhou, 310009, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 14, 2025
概括
血管衰老涉及氨酸特异性去甲基酶5A (KDM5A) 的降低和氨酸4 (H3K4me3) 的增加. 这项研究确定了KDM5A/FABP4轴作为与年龄相关的代谢功能障碍的治疗点.
科学领域:
- 生物遗传学 生物遗传学
- 血管生物学 血管生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 血管衰老有助于全身器官功能障碍,但其驱动因素仍然不清楚.
- 氨酸特异性去甲基酶5A (KDM5A) 和基因素修饰与细胞衰老有关.
研究的目的:
- 研究KDM5A在血管衰老和相关代谢障碍中的作用.
- 阐明将KDM5A与年龄相关的代谢功能障碍联系起来的分子机制.
主要方法:
- 在老年小鼠和细胞衰老模型中分析KDM5A和H3K4me3水平.
- 产生内皮特异性KDM5A缺乏的小鼠.
- 评估代谢表型和寿命.
- 研究脂肪酸代谢的表观遗传调节.
主要成果:
- 在衰老的血管内皮细胞 (VEC) 中,KDM5A水平下降,而H3K4me3增加.
- 缺乏KDM5A会加速VEC衰老,缩短寿命,并导致小鼠的代谢功能障碍.
- 在VEC中恢复KDM5A水平可以缓解衰老的表型并延长寿命.
- 内皮KDM5A缺乏促进脂肪酸代谢障碍通过增强H3K4me3丰富在FABP4促进器.
结论:
- KDM5A在调节血管衰老和代谢平衡中发挥着至关重要的作用.
- KDM5A/FABP4轴是年龄相关代谢障碍的关键调解者.
- 准KDM5A/FABP4通路为血管衰老和相关器官功能障碍提供了潜在的治疗策略.
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