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巨衍生的KIF13B与USP9X相互作用,通过增强TFEB稳定性来减轻腹腔大动脉动脉瘤的发展
Jingxuan Chen1, Yitong Xu1, Huahui Yu2
1Institute of Cardiovascular Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, School of Basic Medical Sciences, Peking University, Beijing, China.
Theranostics
|September 18, 2025
概括
素家族成员13b (KIF13B) 缺乏症通过损害巨细胞功能而加剧腹腔大动脉动脉瘤 (AAA). 在巨细胞中恢复KIF13B可能为AAA疾病提供新的治疗策略.
科学领域:
- 心血管研究研究心血管研究
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 腹腔大动脉动脉瘤 (AAA) 是一种致命的心血管疾病,没有有效的药物治疗方法.
- 素家族13b成员 (KIF13B),一个调节脂质代谢的运动蛋白,在AAA中起着未知的作用.
- 之前的研究还没有研究KIF13B在AAA病变发生过程中的作用.
研究的目的:
- 调查基尼辛家族13b成员 (KIF13B) 在腹腔大动脉动脉瘤 (AAA) 的发展中的作用.
- 探索KIF13B影响AAA进展的分子机制.
- 评估KIF13B作为AAA治疗的潜在治疗标.
主要方法:
- 在人类AAA组织和小鼠模型中评估KIF13B表达 (PPE/ANG II诱导的AAA).
- 利用全球性,骨髓细胞特异性和VSMC特异性Kif13b缺乏的小鼠来研究AAA扩张.
- 进行了涉及转录因子EB (TFEB),USP9X和巨细胞功能的机制研究.
主要成果:
- 在患者和小鼠模型的AAA组织中,KIF13B的表达显著下降.
- 缺少Kif13b,特别是在髓状细胞中,加剧了AAA的发展.
- KIF13B通过USP9X稳定TFEB,维持 lysosomal 功能并抑制巨细胞SASP和炎症.
结论:
- 一个新的KIF13B-USP9X-TFEB信号轴调节了AAA中的巨细胞功能.
- 巨细胞衍生的KIF13B作为血管平衡的保护性调节剂.
- 向KIF13B为治疗腹腔大动脉瘤提供了一个有前途的治疗途径.
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