下调的AhR表达与增加的IFN-γ生产和在白病中受损的免疫检查点上调相关 (MS# JID-2024-1072)
Arno Belpaire1, Annelies Demeyer2, Danique Berrevoet3
1Department of Dermatology, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium; Head and Skin Research Group, Ghent University, UFO-building, Campus Ufo, Sint-Pietersnieuwstraat 33, 9000 Ghent, Belgium.
The Journal of investigative dermatology
|August 15, 2025
概括
在白风中, kynurenine-aryl-hydrocarbon-receptor (AhR) 通路被破坏,导致T细胞活性增加. 用AhR激动剂向这种途径可能会恢复免疫平衡并治疗白风.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 代谢途径 代谢途径
背景情况:
- kynurenine (Kyn) -aryl-hydrocarbon-receptor (AhR) 轴调节T细胞反应,但其在白风中的作用尚不清楚.
- Vitiligo 是一种自身免疫性疾病,其特征是黑色素细胞的损失,可能涉及免疫调节失调.
研究的目的:
- 调查Kyn-AhR轴在非细分性白风中的状态.
- 探索AhR激动剂作为白风治疗策略的潜力.
主要方法:
- 从白风患者和对照组的循环T细胞中分析AhR表达.
- 量化血清酸盐 (Trp) 和Kyn水平.
- 评估细胞内细胞因子的产生和可溶性免疫检查点分子.
- 评估塔皮纳罗夫 (AhR激动剂) 在体外对T细胞反应的影响.
主要成果:
- Vitiligo 患者表现出 CD8+ T 细胞 AhR 表达率降低,Kyn/Trp 比率升高,特别是在活跃的疾病中.
- 较低的AhR表达与产生IFN-γ的CD8+T细胞增加相关,特别是在活跃的白风中.
- AhR表达与可溶性免疫检查点分子 (sBTLA,sPD-1,sTIM-3) 有正相关.
- 塔皮纳治疗剂量依赖地抑制了IFN-γ+ T细胞频率.
结论:
- 干扰Kyn-AhR信号传递有助于增加白风中的IFN-γ产量.
- 像tapinarof这样的AhR激动剂显示出在白风中恢复免疫平衡的潜力.
- 针对AhR途径可能为白风管理提供一种新的治疗方法.
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