来自缺氧骨髓介质干细胞的亡体可以逆转中性粒细胞中LPS诱导的亡延迟
Yifan Zhao, Xiaoyan Li, Yitong Liu
1Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100010, P. R. China.
Stem cells translational medicine
|October 16, 2025
概括
带有miR-125b-5p的介质干细胞的亡体可以通过抑制PI3K-AKT通路来逆转脂多糖诱导的中性粒细胞亡,从而帮助伤口愈合.
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:
- 中性粒细胞亡对于解决炎症和预防组织损伤至关重要.
- 延迟的中性粒细胞亡有助于慢性炎症疾病和受损的愈合.
- 干细胞具有免疫调节特性,但它们的治疗应用受到炎症环境中的亡的限制.
研究的目的:
- 为了研究从介质干细胞中产生的亡体 (ApoBDs) 在调节中性粒细胞亡中的作用.
- 阐明 ApoBDs 影响中性粒细胞功能的特定分子成分和机制.
- 在伤口愈合模型中评估干细胞衍生的ApoBDs的治疗潜力.
主要方法:
- 在缺氧条件下诱导骨髓中介细胞干细胞的亡.
- 干细胞衍生的亡体 (ApoBDs) 的隔离和特征.
- 在体外对ApoBDs对脂聚糖 (LPS) 诱导的中性粒细胞亡的影响的评估.
- 分析微RNA (miR-125b-5p) 转移及其对PI3K-AKT信号通路的影响.
- 在小鼠皮肤伤口愈合模型中评估ApoBDs的疗效.
主要成果:
- 低氧诱导的ApoBDs可以逆转LPS延迟的中性粒细胞亡,而不会影响生理性亡.
- 中性粒细胞从ApoBD中细胞化miR-125b-5p,抑制PI3K-AKT通路的激活.
- 在小鼠中,ApoBDs和封装的miR-125b-5p促进了中性粒细胞亡和加速伤口关闭.
- ApoBDs降低了PI3激酶p110α的表达,从而抑制了PI3K-AKT通路.
结论:
- 介酶干细胞衍生的ApoBDs将miR-125b-5p转移到中性粒细胞,调节中性粒细胞的亡.
- 这种机制涉及PI3K-AKT信号通路的抑制,逆转LPS诱导的亡延迟.
- 来自干细胞的ApoBD显示出作为一种新的治疗策略,用于异常中性粒细胞亡的特征的炎症性疾病.
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