一种非编码的寡核酸招募皮肤CD11b+细胞,抑制助手反应并促进Tregs
Kahkashan Kamal1, Elina Richardsdotter-Andersson2, Aleksandra Dondalska1
1Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Svante Arrhenius väg 20C, Stockholm, SE-106 91, Sweden.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 19, 2024
概括
一种新的单链寡核酸 (ssON) 招募皮肤免疫细胞,抑制炎症T细胞反应并促进调节性T细胞 (Tregs). 这种ssON疗法为管理炎症性皮肤疾病提供了潜在的策略.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 分子生物学分子生物学
背景情况:
- 通过免疫检查点和调控性T细胞 (Treg) 诱导,皮肤内存在的抗原呈现细胞 (APC) 对周边耐受性至关重要.
- 目前用于扩大或招募免疫调节性皮肤细胞而不引起炎症的策略是有限的.
研究的目的:
- 确定一种方法来招募免疫调节性皮肤细胞而不会引起炎症.
- 研究一种非编码单链寡核酸 (ssON) 在调节皮肤免疫力方面的治疗潜力.
主要方法:
- 将一个无编码的单链寡核酸 (ssON) 给小鼠皮肤.
- 皮肤活检的流细胞计和转录基因分析,以表征招募的细胞和基因表达.
- 功能性试验评估ssON招募细胞对T细胞反应的影响.
- 在一种因米奎莫德诱导的炎症模型中评估ssON治疗.
主要成果:
- 施用ssON诱导了皮肤中CD45+CD11b+Ly6C+细胞的CCR2依赖积累,表达PD-L1和ILT3.
- 转录组分析显示,ssON治疗后免疫抑制基因的升调.
- 招募的CD11b+细胞抑制了Th1/2/9反应,并促进了CD4+FoxP3+T细胞诱导.
- 在一种因米基莫德诱导的炎症模型中,ssON治疗降低了Th17反应.
- 在ssON治疗的皮肤CD11b+细胞中,PD-L1部分介导IL-10的诱导.
结论:
- 一种新的免疫调节性ssON招募具有强大的T细胞抑制和Treg诱导能力的皮肤CD11b+细胞.
- 这种ssON代表了一种潜在的治疗剂,通过调节皮肤免疫力来缓解炎症性皮肤疾病.
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