内源CD5L控制人类巨细胞的代谢和炎症状态
Kashif Rasheed1, Neda Nejati Moharrami1, Erlend Bjørkøy Tande1
1Centre of Molecular Inflammation Research (CEMIR), Department of Clinical Research and Molecular Medicine (IKOM), Faculty of Medicine and Health Sciences (MH), Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Frontiers in immunology
|February 9, 2026
概括
人类巨细胞中CD5L基因的破坏减少了炎症性基因表达,改变了脂质代谢. 单细胞中的CD5L缺失也会影响细胞相互作用并提高CD52的调节,这表明它在动脉样硬化进展中发挥了作用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- CD5L是一种吸尘器受体类分子,参与细胞存活,炎症和脂质代谢.
- 它对炎症信号的细胞自主作用,特别是在人类巨细胞中,尚不清楚.
- 人类巨细胞内源性CD5L表达在很大程度上仍未被探索.
研究的目的:
- 研究CD5L基因破坏对THP-1人类单细胞细胞炎症状态的影响.
- 分析CD5L淘汰性巨细胞中基因表达和脂质代谢的变化.
- 探索CD5L在未分化的单细胞中的作用及其在动脉样硬化中的潜在参与.
主要方法:
- 使用CRISPR-Cas9基因编辑来创建CD5L淘汰THP-1细胞系.
- 使用定量PCR分析基底和脂聚糖 (LPS) 刺激的基因表达.
- 评估了细胞内脂质池组成和脂肪酸合成酶活性.
- 在未分化的CD5L删除单细胞中检查基因表达.
主要成果:
- CD5L淘汰赛巨体表现出NF-κB调节基因的基底表达减少.
- 在CD5L缺乏的细胞中观察到细胞内脂质池组成的显著变化.
- 在未分化的单细胞中,CD5L的缺失导致了涉及细胞间相互作用和动脉样硬化进展的失调转录.
- CD5L删除上调了CD52表达,被确定为一种新的抗炎开关.
结论:
- CD5L在调节人类巨细胞中的炎症信号和脂质代谢方面发挥着多方面的作用.
- CD5L影响单细胞的行为,可能会影响它们在炎症部位的局部化.
- 这些发现表明CD5L在动脉样硬化发展的早期阶段的参与.
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