在大动脉病理中对LDLs的VSMC,巨细胞和纤维细胞反应的综合分析
Ulyana Khovantseva1,2, Diana Kiseleva1,3, Vadim Cherednichenko1
1Petrovsky National Research Center of Surgery, 119435 Moscow, Russia.
International journal of molecular sciences
|March 14, 2026
概括
像光滑肌细胞和纤维细胞这样的血管细胞在暴露于低密度脂蛋白 (LDL) 时变得炎症,导致心血管疾病 (CVD) 的进展. 巨细胞还显示炎症标志物和脂质吸收增加.
科学领域:
- 分子生物学分子生物学
- 心血管研究研究心血管研究
- 细胞免疫学 细胞免疫学
背景情况:
- 心血管疾病 (CVD) 是全球主要的死亡原因.
- 大动脉病理,如动脉样硬化和动脉瘤是显著的心血管疾病风险.
- 了解大动脉壁中的细胞反应对于心血管疾病机制至关重要.
研究的目的:
- 通过检查大动脉壁细胞来研究心血管疾病的分子机制.
- 分析血管光滑肌细胞 (VSMC),纤维细胞和巨细胞对低密度脂蛋白 (LDL) 的反应.
- 为了评估表型变化,LDL吸收和亲炎性介质释放.
主要方法:
- 使用了初级VSMC,纤维细胞 (977hTERT) 和THP-1巨细胞的体外模型.
- 通过光染色进行评估的LDL内部化 (BDP 630/650).
- 使用ELISA和RT-qPCR测量了细胞因子分泌 (IL-6,IL-8,IL-1β,CCL2) 和基因表达.
主要成果:
- 所有测试的细胞类型都内化了LDLs;巨细胞显示了最高的脂质积累.
- 大型肌肉细胞和纤维细胞获得了促炎特征,增加了IL-6,IL-8和CCL2.2的分泌.
- 暴露于LDL增强了杂物受体CD36的表达和巨细胞中促炎性细胞因子 (特别是IL-1β) 的产生.
结论:
- 在病理条件下,VSMCs和纤维细胞可以采取促炎作用.
- 巨细胞在脂质积累和炎症中发挥着重要作用,以应对LDLs.
- 这些细胞反应为大动脉疾病和心血管疾病的分子病变提供了洞察力.
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