由酸盐驱动的PKM2化和二元化加速了与年龄相关的心脏纤维化
Ziwen Wang1,2,3,4,5, Ziyuan Zhang6, Zheng Ping7
1Department of Cardiology and Nephrology, The 82nd Group Army Hospital of PLA (252 Hospital of PLA), Baoding, Hebei Province, China. wangziwen8080@163.com.
Communications biology
|December 10, 2025
概括
升高的酸盐驱动与年龄相关的心脏纤维化,通过PKM2化激活纤维细胞. 甲胺可以通过减少酸盐的积累来治疗这种情况,为透缩功能障碍提供了希望.
科学领域:
- 在衰老中的代谢途径.
- 心脏纤维化的机制
- 扩张性功能障碍的分子基础
背景情况:
- 心脏纤维化是衰老的标志,也是心力衰竭的主要原因.
- 导致与年龄有关的心脏纤维化的精确分子机制尚未完全理解.
- 代谢失调越来越多地与衰老过程有关.
研究的目的:
- 为了研究酸盐在与年龄有关的心脏纤维化中的作用.
- 为了阐明分子信号传递途径,涉及到酸中介心脏衰老.
- 探索向糖酸盐积累的治疗潜力.
主要方法:
- 对老老鼠和人类心脏组织中糖酸盐水平的分析.
- 生物化学试验以评估PKM2的化和二度化.
- 使用SUCNR1淘汰赛小鼠进行研究的研究,以调查顺序信号传递.
- 研究PKM2的核转移及其与HIF-1α.的相互作用.
- 评估甲福明对纤维细胞激活和心脏功能的影响.
主要成果:
- 在老年小鼠和人类中观察到酸盐水平升高,与心脏纤维化相关.
- 顺酸促进纤维细胞激活和通过PKM2在lysine 125的顺化促进原蛋白的产生,有利于其二元状态.
- 通过SUCNR1/GPR91传递酸信号,调解PKM2酸和二元化,有助于益纤维细胞网络和扩张功能障碍.
- 双基PKM2转移到核中,增强HIF-1α结合和升调纤维基因.
- 甲胺治疗减少了酸盐的积累,抑制了纤维细胞激活.
结论:
- 酸盐的积累是与年龄有关的心脏纤维化和腹功能障碍的关键驱动因素.
- 一个新型的酸-PKM2信号轴,涉及PKM2酸和二元化,调解心脏衰老.
- 针对代谢失调,特别是酸盐积累,是缓解心脏衰老和心力衰竭的潜在治疗策略.
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