金色化物Rb1通过抑制STING介导的巨细胞激活来缓解急性catecholamine激增诱导的心肌损伤,部分是通过抑制STING介导的巨细胞激活来缓解急性心肌损伤
Yujue Wang1, Xinmiao Tang1, Jingang Cui2
1Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, 110 Ganhe Rd, Shanghai 200437, China.
概括
银化物Rb1 (Rb1) 通过向细胞核DNA感应途径,减少应激心肌病 (SCM) 中的心脏损伤和炎症. 这种天然化合物在治疗SCM方面表现有前途,SCM是一种心血管死亡率高的疾病.
科学领域:
- 心脏病学 心脏病学
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
背景情况:
- 压力心肌病 (SCM) 与急性冠状动脉综合征的死亡率是相同的.
- 炎症机制有助于SCM的预后不佳,缺乏向治疗.
- 缺少雌激素会加剧SCM的易感性.
研究的目的:
- 在SCM的小鼠模型中研究金氏化物Rb1 (Rb1) 对心肌损伤的保护作用.
- 阐明Rb1的抗炎机制,特别是它在细胞质DNA感应途径中的作用.
主要方法:
- 在卵巢切除 (OVX) 的小鼠中,使用异二醇 (ISO) 诱导了应激心肌病.
- 在OVX-ISO小鼠和RAW 264.7巨细胞中评估了Rb1的影响,这些巨细胞被用小牛胸腺DNA (ctDNA) 或DMXAA刺激.
- 生物信息学,RNA-seq和生物化学测试被用于分析炎症途径和STING激活.
主要成果:
- 雌激素缺乏增加了对ISO诱导的心肌损伤的敏感性.
- 在OVX-ISO小鼠中,Rb1治疗减轻了心肌损伤,心肌细胞亡和炎症.
- Rb1抑制了ctDNA/DMXAA诱导的炎症性细胞因子产生 (TNF-α,IL-6,CCL2,IFN-β) 和巨细胞中的STING激活.
- 生物信息学将细胞体DNA感应途径与ISO诱导的心脏炎症和细胞死亡联系起来.
结论:
- 通过减少缩和炎症,Rb1可以保护SCM相关的心肌损伤.
- Rb1通过降低细胞质DNA感应途径和STING激活的调节,产生抗炎作用.
- Rb1提出了SCM的潜在治疗策略,需要进一步的临床研究.
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