亲炎性细胞因子使介酶体 stromal 细胞对亡产生敏感性
Natalie L Payne1, Swee Heng Milon Pang1, Andrew J Freeman1
1Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia.
Cell death discovery
|March 28, 2025
概括
炎症性"许可"通过使它们更敏感地对亡,增强了介质干细胞 (MSC) 治疗. 这种受控的细胞死亡,特别是通过线粒体通路,对于MSC清除和炎症性疾病的治疗疗效至关重要.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 再生医学是一种再生医学.
背景情况:
- 介酶体 stromal 细胞 (MSCs) 在炎症性疾病中表现出治疗潜力,主要是通过膜信号传递 (秘密体).
- 用炎症性细胞因子预先调节MSC,称为"许可",旨在提高分泌体释放和有效性.
- 最近的发现强调,MSC亡和随后的细胞分裂对于治疗结果至关重要.
研究的目的:
- 研究MSCs中调节细胞死亡的机制.
- 确定炎症性细胞因子暴露 (许可) 如何影响MSC死亡途径和清除.
主要方法:
- 评估了MSC对外部亡和亡的敏感性.
- 研究了线粒体亡途径的作用,包括MCL-1和BCL-XL抑制.
- 利用BAK和BAX的遗传删除来研究亡体释放.
- 检查了TNF和IFN-γ"授权"对MSC亡的 in vitro和 in vivo清除在静脉输注后的影响.
主要成果:
- MSCs对外部亡和亡具有抵抗力.
- 线粒体亡途径,由抑制MCL-1和BCL-XL触发,有效地诱导MSC死亡.
- 在MSC拆卸过程中,BAK和BAX对于亡体释放至关重要.
- 炎症性"许可"增加了MSC对内在亡的敏感性,并加速了肺部的体内清除.
结论:
- 炎症性"许可"为MSCs启动了亡,特别是通过内在线粒体通路.
- 这种增强的亡和随后的细胞分裂是MSC在炎症条件下的治疗疗效的关键.
- 针对MSC死亡途径,特别是内在亡途径,可以优化基于细胞的疗法.
相关概念视频
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Regulation of Hematopoietic Stem Cells
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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their access...


