BubR1 缺乏驱动着与心脏衰老和心脏衰竭相关的转录基因变化和病理
Renju Pun1, Aliya L Haas1, Aradhana Thapa1
1Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, Nebraska, USA.
Aging cell
|July 3, 2025
概括
降低的BubR1蛋白水平通过促进缩和纤维化,加速心脏衰老和心力衰竭. 维护BubR1可能会防止与年龄有关的心脏病,并改善老年人的心脏健康.
科学领域:
- 心血管生物学 心血管生物学
- 衰老研究研究 衰老研究
- 分子心脏病学分子心脏病学
背景情况:
- 老龄化是心脏病的主要危险因素,导致诸如缩,纤维化和衰老等病理变化.
- BubR1 (一种参与细胞周期和染色体稳定性的蛋白质激酶) 与全身衰老有关,但其在心脏衰老中的作用尚不清楚.
研究的目的:
- 研究BubR1在调节心脏衰老中的作用及其对心脏病病发病的贡献.
- 探索BubR1作为治疗年龄相关心脏功能障碍的治疗点的潜力.
主要方法:
- 在小鼠模型中研究了BubR1缺陷.
- 从BubR1缺乏的小鼠心脏进行了转录基因分析,并将其与老年心脏和人类心力衰竭样本进行了比较.
- 在老年心脏,心力衰竭模型和人类心力衰竭患者中检查了BubR1表达.
- 研究了BubR1降低对孤立心肌细胞的影响.
主要成果:
- 在小鼠中,BubR1缺乏导致心脏缩,纤维化和细胞衰老.
- 转录组分析揭示了心脏功能中断的途径和与老年心脏共享的基因网络.
- 随着年龄的增长,BubR1水平下降,并且在心力衰竭患者和模型中减少.
- 降低心肌细胞中的BubR1增加了心力衰竭,高和细胞骨重塑的标志物.
结论:
- 在人类中,BubR1缺乏与心脏衰老和心力衰竭有关.
- 维持BubR1表达可能是一种治疗策略,可以对抗与年龄有关的心脏衰退并改善心脏健康.
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