来自BMMSCs的外基因组促进B10细胞分化,但不促进IL-10的产生
Jiran Wang1, Yingzhi Gu1, Jing Wang1
1Department of Orthodontics, Beijing Stomatology Hospital, School of Stomatology, Capital Medical University, Beijing, China.
Cell biochemistry and function
|May 19, 2025
概括
鼠标骨髓中介质干细胞衍生的外体细胞 (BMMSC-Exos) 促进调控性B细胞分化. 虽然BMMSC-Exos诱导B细胞成为调节性B细胞 (Bregs),但它们不会在体外增加IL-10分泌.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 调控性B细胞 (Bregs),特别是IL-10产生的B10细胞,对于控制炎症性疾病至关重要.
- 介质干细胞衍生的外体细胞 (BMMSC-Exos) 正在研究它们在炎症条件下的治疗潜力.
研究的目的:
- 研究BMMSC-Exos在B细胞分化中的功能作用.
- 探索BMMSC-Exos对IL-10产生的Bregs发育和功能的影响.
主要方法:
- 与BMMSCs (Transwell) 和BMMSC-Exos一起培养B细胞.
- 通过RT-qPCR和ELISA对炎症因子 (IL-1β,TNF-α) 和骨代谢标记物 (RANKL,OPG) 的分析.
- 流细胞计和免疫光学测量CD1大CD5+布雷格和IL-10+CD45+布雷格的数量.
- 细胞活力测定 (CCK8).
主要成果:
- 与BMMSC共同培养下调的促炎因素 (IL-1β,TNF-α,RANKL) 和上调的IL-10和OPG/RANKL比率.
- BMMSC-Exos以剂量依赖的方式增加了CD1高CD5+和IL-10+CD45+Bregs的比例.
- 在体外,BMMSC-Exos降低了B细胞分泌的促炎细胞因子和IL-10的分泌.
结论:
- BMMSC-Exos有效地诱导B细胞向调节性B细胞表型 (CD1dhighCD5+和IL-10+CD45+ Bregs) 的分化.
- 尽管诱导了布雷格分化,但BMMSC-Exos在体外环境中并没有增强这些细胞的IL-10分泌.
- 这些发现表明,BMMSC-Exos在免疫调节中的作用有细微差别,可能会影响炎症疾病的发病.
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