不同的T细胞表型定义了儿科克朗氏病和性结肠炎
Leonard Nettey1,2,3,4,5, Hengqi Betty Zheng6, Joseph C Devlin7
1Program in Immunology, Harvard Medical School, Boston, MA 02115, USA.
medRxiv : the preprint server for health sciences
|November 24, 2025
概括
儿科炎性肠病 (IBD) 治疗反应与T细胞转移有关. 了解T助手17 (TH17) 和T卵泡助手 (TFH) 细胞活性可以预测克罗恩氏病中抗TNF治疗的有效性.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 儿科医学 儿科医学
背景情况:
- 儿童炎症性肠病 (IBD),包括克罗恩氏病 (CD) 和性结肠炎 (UC),具有重大治疗和预后挑战.
- 识别免疫细胞状态,预测对抗TNF药物等疗法的反应,对于优化儿科IBD护理至关重要.
- 目前对免疫细胞在儿科IBD病原和治疗反应中的作用的理解仍然不完整.
研究的目的:
- 在儿科CD,UC和功能性胃肠道疾病 (FGID) 中全面分析结肠免疫学.
- 阐明特定的免疫细胞类型和与小儿IBD抗TNF治疗反应相关的状态.
- 调查T细胞激活continuous和T细胞受体 (TCR) 多活性在疾病发病和治疗结果中的作用.
主要方法:
- 在PREDICT研究中,79名未接受过治疗的儿科患者接受了诊断内镜检查.
- 在结肠样本上进行了全面的转录学,组织学和血清学分析.
- 免疫细胞分析的重点是T细胞子集,包括TH1,TH17,TFH种群和TCR表型.
主要成果:
- 在T细胞中观察到TH1-to-TH17免疫激活连续体的协调转移,并与儿科CD的抗TNF反应有关.
- 对于UC,疾病复杂性涉及TH17和TFH生物学,治疗前的TH17信号与抗TNF耐药性相关.
- 在UCTFH细胞中的多活性TCR表型与生殖中心活性和IgG1血细胞有关,与与无反应相关的TH17签名形成对比.
结论:
- 独特的T细胞依赖机制驱动儿科CD和UC的发病和治疗反应.
- 持续的TH17信号在CD和基线TH17信号在UC中都与疾病的发病有关.
- 这些发现支持了对儿科IBD的内型特异性治疗策略的需求,超越了通用方法.
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