希文通过促进雄性小鼠心脏炎症促进与衰老相关的心脏功能障碍
Shi-Yu Huang1,2,3, Yu-Jie Chen2, Yu-Xin Hu4
1Department of Ultrasound, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, Guangdong, China.
Aging cell
|January 11, 2026
概括
河蛋白水平随着年龄的增长而增加,并恶化心脏功能. 降低Hevin水平通过减少炎症来改善心脏衰老,确定Hevin作为心脏衰老的潜在治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
- 衰老研究研究 衰老研究
背景情况:
- 衰老与系统性炎症的增加有关,涉及巨细胞,并导致组织损伤和疾病.
- 赫文 (SPARCL1) 涉及炎症反应和巨细胞两极分化,这表明它在与年龄相关的疾病中起作用.
- 心脏衰老是一个重大的健康问题,其特点是功能衰退和对疾病的易感性增加.
研究的目的:
- 为了调查Hevin在心脏衰老过程中的作用.
- 阐明Hevin影响心脏衰老和功能的分子机制.
- 确定Hevin作为与年龄有关的心脏功能障碍的潜在治疗标.
主要方法:
- 利用年轻和老化的C57 BL/6雄性小鼠,给予Hevin或使用腺相关病毒血清型9 (AAV9) 载体进行Hevin敲击.
- 采用RNA测序 (RNA-seq) 来分析心脏衰老中的分子变化.
- 通过使用RAW264.7细胞系,研究了Hevin在巨分化中的作用.
主要成果:
- 老年小鼠的血清赫文水平较高,心脏赫文表达增加,与心脏功能受损相关.
- 赫文的给药加剧了与衰老相关的心脏重塑和功能障碍,而赫文的淘汰赛改善了这些影响.
- 赫文诱导了老年心脏中的CCL5激活;阻断CCL5逆转了赫文对心脏衰老的有害影响.
结论:
- 赫文通过通过TLR4刺激心脏巨细胞促进心脏衰老和功能障碍,导致CCL5释放和炎症增加.
- 肝素血清水平和心脏表达与衰老期间的心脏功能相反相关.
- 针对Hevin提出了一个有前途的策略,用于预测和治疗心脏衰老和相关的炎症状况.
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