介质干细胞对大肠炎小鼠Treg细胞的影响
Heng Zhang1, Wei Cai2, Dan Xu1
1Department of Gastroenterology, The Central Hospital of Wuhan, Wuhan, China.
Clinical and experimental immunology
|July 7, 2023
概括
骨髓介质干细胞 (BM-MSC) 在大鼠中显示出硫酸 (DSS) 诱导的大肠炎的治疗潜力. BM-MSC治疗改善了临床症状,减少了肠道损伤,并通过增强调节性T细胞 (Treg) 来调节免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 再生医学是一种再生医学.
背景情况:
- 炎症性肠道疾病,特别是结肠炎,对健康构成重大挑战.
- 硫酸德克斯 (DSS) 被广泛用于诱导动物实验性结肠炎模型.
- 调节性T细胞 (Treg) 在维持免疫平衡和防止过度炎症方面发挥着至关重要的作用.
研究的目的:
- 在DSS诱导性大肠炎的老鼠模型中研究骨髓介质干细胞 (BM-MSC) 的治疗疗效.
- 评估BM-MSC治疗对临床表现,组织病理损伤和炎症标志物的影响.
- 为了确定BM-MSC对调节性T细胞 (Treg) 群体和功能的影响.
主要方法:
- 在使用硫酸 (DSS) 的老鼠中诱导大肠炎.
- 骨髓介质干细胞 (BM-MSC) 的隔离,培养和静脉注射.
- 通过实时PCR对临床症状,体重,结肠长度,MPO活性,炎症性细胞因子表达 (IFN-γ,IL-4,IL-17,TGF-β) 的评估,以及使用流细胞计,西斑和ELISA对Treg细胞的分析 (CD4+CD25+Foxp3+,IL-35,IL-10).
主要成果:
- 在DSS诱导的大肠炎的老鼠中,BM-MSC治疗显著改善了临床症状,并逆转了他的病理损伤.
- BM-MSC的使用导致了促炎性细胞因子 (IFN-γ,IL-4,IL-17) 的下调和结肠组织中TGF-β的上调.
- 用BM-MSC治疗增加了CD4+CD25+Foxp3+Treg细胞的数量和功能,伴随着IL-35分泌量的增加.
结论:
- 骨髓介质干细胞 (BM-MSC) 对DSS诱导的大肠炎表现出显著的治疗效果.
- 在大肠炎模型中,BM-MSC治疗可缓解肠道损伤和炎症反应.
- BM-MSC的免疫调节作用通过增强Treg细胞功能和促进免疫抑制性细胞因子进行调节.
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