由HUC-MSC衍生的外体通过miR-221/PTEN通路修复了基对16HBE细胞造成的损伤
Xiaotao Zhou1, Shanshan He2, Jiayi He2
1Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, 1838 Guangzhou Road North, Guangzhou 510515, PR China; Public Health Service Centre of Baoan District, Shenzhen City 518000, PR China.
Ecotoxicology and environmental safety
|October 2, 2024
概括
人类带介质干细胞产生的外体细胞 (HUC-MSC-exo) 保护人类肺细胞免受氨酸 (HQ) 损伤. 这些外体通过调节miR-221/PTEN通路来减轻细胞毒性和基因毒性,显示出治疗潜力.
科学领域:
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
- 毒理学 毒理学 毒理学
背景情况:
- 作为无细胞治疗剂,研究中介细胞干细胞起源的外体细胞 (MSC-exo).
- 氨酸 (HQ) 引起显著的细胞损伤,包括细胞毒性和基因毒性.
- 了解防治HQ毒性的保护机制,对于开发有效的治疗方法至关重要.
研究的目的:
- 调查人类带MSC起源的外体细胞 (HUC-MSC-exo) 对16HBE细胞中HQ诱导的损伤的保护作用.
- 阐明涉及miR-221/PTEN通路的潜在机制.
主要方法:
- 使用差分梯度超离心和传输电子显微镜 (TEM) 隔离和描述HUC-MSC-exo.
- 与HUC-MSC-exo一起培养16HBE细胞,并评估HQ诱导的损伤 (增殖,迁移,氧化应激,DNA/染色体损伤).
- 使用分子测定对miR-221/PTEN轴的研究.
主要成果:
- HQ暴露显著降低了16HBE细胞的增殖和迁移,同时增加了氧化应激和DNA/染色体损伤.
- HUC-MSC-exo治疗减轻了HQ诱导的细胞毒性,氧化和基因毒性对16HBE细胞的影响.
- HQ上调 miR-221 和下调 PTEN; HUC-MSC-exo 通过降低 miR-221 和增加 PTEN 表达来逆转这种情况.
结论:
- HUC-MSC-exo有效地保护16HBE细胞免受HQ诱导的氧化应激,细胞毒性和基因毒性.
- 保护机制涉及对miR-221/PTEN通路的调制.
- HUC-MSC-exo代表了一种有前途的治疗剂,可以减轻HQ的毒性.
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