训练有素的先天免疫能调节骨质细胞和骨质细胞分化
N R Rahmani1,2, R Belluomo3, M C Kruyt4,5
1Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands. n.r.rahmani@umcutrecht.nl.
Stem cell reviews and reports
|March 13, 2024
概括
巨细胞的先天免疫记忆会影响骨的愈合. 训练有素的巨细胞促进骨形成,而耐受性巨细胞阻碍骨形成并损害骨质细胞功能,影响再生医学策略.
科学领域:
- 免疫学 免疫学 免疫学
- 骨生物学 骨生物学 骨生物学
- 再生医学是一种再生医学.
背景情况:
- 巨细胞对于骨的修复和再生至关重要.
- 天生的免疫记忆,通过训练免疫或耐受性,改变了巨细胞的功能.
- 了解巨细胞记忆对骨细胞的影响对于再生疗法至关重要.
研究的目的:
- 研究受过训练和耐受性巨细胞如何影响人类介质干细胞 (hMSC) 骨质细胞分化.
- 评估受过训练和耐受性巨细胞对骨质细胞分化的影响.
- 探索巨细胞在骨再生过程中的先天免疫记忆的作用.
主要方法:
- 在体外诱导巨细胞训练免疫 (BCG) 和耐受性 (LPS).
- 在休息和炎症条件下与hMSCs分化的巨细胞共同培养.
- 测量骨质生成标志物 (ALP,矿化) 和细胞因子概况.
- 评估巨细胞骨质细胞分化能力.
主要成果:
- 在休息条件下,BCG训练的巨细胞增强了性酸酶 (ALP).
- 在炎症条件下,LPS耐受性巨细胞在炎症条件下增加ALP.
- 训练有素的巨细胞促进了hMSC矿化,而耐受性巨细胞则抑制了它.
- 骨质细胞分化不受训练有素的巨细胞的影响,但被容忍的巨细胞显著减少.
结论:
- 巨细胞的先天免疫记忆对骨质母细胞和骨质母细胞的分化有不同的影响.
- 训练有素的巨细胞显示出增强骨再生的潜力.
- 耐受性巨细胞可能会阻碍骨愈合并影响骨重塑.
- 这些发现强调了免疫细胞状态在骨再生医学中的重要性.
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