与卡波西肉瘤相关的疹病毒编码的微RNA有助于扩张性心肌病变
Yanru Zhao1,2, Huaping Li1,2, Hengzhi Du1,2
1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
Signal transduction and targeted therapy
|June 8, 2023
概括
卡波西卡波西 (Kaposi Kaposi) 是一个
科学领域:
- 病毒学 病毒学
- 心脏病学 心脏病学
- 分子生物学分子生物学
背景情况:
- 扩张性心肌病 (DCM) 是心脏移植的主要原因.
- 在DCM患者中发现了一种与卡波西肉瘤相关的疹病毒 (KSHV) 编码的微RNA (miRNA),kshv-miR-K12-1-5p.
- 人们越来越认识到KSHV感染在心血管疾病中的潜在作用.
研究的目的:
- 调查KSHV感染与DCM之间的关联.
- 确定KSHV DNA和kshv-miR-K12-1-5p在DCM患者中的临床意义.
- 阐明kshv-miR-K12-1-5p导致心脏功能障碍的机制.
主要方法:
- 在696名DCM患者和对照中测量了血KSHVDNA负载和kshv-miR-K12-1-5p水平.
- 随访研究评估了心血管死亡率和心脏移植率.
- 在心脏组织中检测到KSHV和kshv-miR-K12-1-5p,使用免疫光和in situ杂交.
- 在体内模型被用于研究kshv-miR-K12-1-5p过度表达的影响.
主要成果:
- 与非DCM对照组相比,DCM患者的KSHV血清阳性和血病毒载量显著增加.
- 在DCM患者中,KSHV血清阳性与心血管死亡或心脏移植的风险增加有关.
- 在DCM患者的心脏中,KSHV DNA和kshv-miR-K12-1-5p的水平升高.
- KSHV主要感染心脏内皮,而kshv-miR-K12-1-5p影响了内皮和心肌细胞,破坏了I型干扰素信号传递.
- 过度表达kshv-miR-K12-1-5p恶化病毒诱导的心脏功能障碍.
结论:
- KSHV感染是扩张性心肌病的重要危险因素.
- 编码KSHV的miRNA,kshv-miR-K12-1-5p,通过破坏心脏信号通路,在DCM的发病过程中发挥作用.
- 这些发现提供了关于DCM病毒病因和潜在治疗点的见解.
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