托法西替尼 (tofacitinib) 通过抑制产生ILC和T细胞的IFNγ来改善坎皮洛巴克特诱导的肠道病理
Anna A Korchagina1, Sergey A Shein1, Wayne T Muraoka1
1Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr., San Antonio, TX 78229, USA.
Mucosal immunology
|July 4, 2025
概括
托法西替尼通过抑制免疫细胞信号来减少小鼠中Campylobacter jejuni感染的肠道炎症. 这种JAK/STAT抑制剂可以缓解结肠炎而不影响细菌生长,提供潜在的治疗见解.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 微生物学 微生物学
背景情况:
- 患有自身免疫性疾病的患者通常需要免疫抑制疗法,增加对感染的易感性.
- 托法西提尼布是一种Janus激酶 (JAK) /信号传感器和激活体转录 (STAT) 途径抑制剂,用于性结肠炎,但其对肠道感染的影响尚不清楚.
研究的目的:
- 在小鼠模型中研究托法西提尼布对Campylobacter jejuni (C. jejuni) 感染的发病效应.
- 阐明托法西替尼在肠道感染期间影响免疫反应的机制.
主要方法:
- 托法西提尼布口服给感染C. jejuni. 的小鼠.
- 评估肠道病理,细菌殖民和免疫细胞群 (单细胞,中性粒细胞,ILCs,T细胞).
- 测量化学激素和细胞激素表达 (例如CXCL1,CXCL2,CCL2,IFNγ) 和ILC的细胞酸盐映射.
主要成果:
- 早期的托法西替尼治疗减轻了肠道病理,但没有影响C. jejuni的殖民.
- 托法西替尼抑制了化学激素的表达,减少了免疫细胞向肠道的招募.
- 在人性化小鼠中,JAK/STAT抑制降低了IFNγ生成的先天性淋巴细胞 (ILC) 和T细胞,改善了疾病.
- 托法西替尼抑制了特定的ILC子集的IFNγ产生,并减少了它们的增殖,独立于ILC可塑性.
- 即使没有T细胞,疾病也会得到改善.
结论:
- 托法西替尼减轻C. jejuni诱导的大肠炎,通过减少促炎性细胞因子的产生和抑制免疫细胞的IFNγ分泌.
- 托法西提尼布的治疗作用包括调节先天性和适应性免疫反应,同时保持抗菌防御.
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