骨巨细胞中以细胞酶诱导的代谢转变驱动乳酸的产生,并调节炎症和骨质细胞形成
Rahasudha Kannan1,2, Nicholas J Carruthers3, Amy J Koh1
1Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, United States.
Frontiers in immunology
|December 15, 2025
概括
吞性骨质芽细胞的巨细胞转向增强的葡萄糖分解,产生乳酸盐. 这种乳酸抑制骨质细胞活性,促进抗炎性巨细胞标记物,帮助骨修复.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
背景情况:
- 巨细胞在组织修复中发挥着至关重要的作用,通过细胞分裂,清除亡细胞和解决炎症.
- 巨细胞的可塑性允许适应微型环境,但异质性复杂化后细胞分析.
- 了解细胞衰变后巨细胞状态的变化是组织稳态的关键.
研究的目的:
- 为了表征巨细胞亚种群及其在阿波性骨质母细胞的细胞化后的代谢概况.
- 为了研究改变巨细胞代谢对骨微环境的功能后果.
- 阐明乳酸在调节骨质细胞活动和巨细胞表型中的作用.
主要方法:
- 单细胞RNA测序来自骨髓的巨细胞,包围着亡性骨质母细胞.
- 聚类分析以确定独特的巨细胞亚群 (c3和c9).
- 定量实时PCR (qRT-PCR),代谢学和乳酸ELISA来评估代谢变化.
- 在体外实验中评估乳酸对骨质母细胞,骨质母细胞和巨细胞的影响.
主要成果:
- 鉴定出了两个独特的巨细胞子群 (c3,c9),它们是特有的细胞体,显示出增强的糖解和抗炎特征.
- 观察到糖分酶 (Slc2a1,Pdk1,Ldha,Slc16a3) 的高调表达和细胞内/细胞外乳酸的增加.
- 高乳酸度降低了骨质细胞数量和吸收活性,同时提高了M2类巨细胞标记物的调节 (Arg1,Il1rn,Klf4).
结论:
- 形骨质细胞的巨细胞增生诱导显著的新陈代谢重编程向增强的葡萄糖分解.
- 由细胞巨细胞产生的乳酸通过抑制骨质细胞的功能来调节骨微环境,起着至关重要的作用.
- 这些发现突出了一个新的机制,即巨细胞通过代谢适应来调节骨质稳定和炎症解消.
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