基于rituximab的脱敏化对ABO不兼容的肝移植中T细胞中介排斥的影响
Kengo Sasaki1, Kazuaki Tokodai2, Atsushi Fujio2
1Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan. kengo.sasaki.a7@tohoku.ac.jp.
Surgery today
|January 6, 2026
概括
对于ABO不兼容的肝移植而言,利图西马布的脱敏化会防止抗体排斥,但会增加早期的T细胞中介排斥. 这可能是由于Rituximab诱导的B细胞枯竭促进T细胞激活.
科学领域:
- 移植免疫学 移植免疫学
- 免疫抑制策略 免疫抑制策略
- 移植拒绝机制 移植拒绝机制
背景情况:
- ABO不兼容 (ABO-I) 肝移植 (LT) 使用基于rituximab的脱敏化来防止抗体介导排斥 (AMR).
- 这种脱敏对T细胞介导排斥 (TCMR) 的影响尚不清楚.
研究的目的:
- 为了比较 ABO-兼容 (ABO-C) 与 ABO-I LT 接受者的 TCMR 发生率.
- 在LT的背景下,评估基于rituximab的脱敏化对TCMR的影响.
主要方法:
- 对45名LT接受者的回顾性分析 (32名ABO-C,13名ABO-I).
- 所有患者都接受了基于巴西西西马布的免疫抑制; ABO-I 组接受了额外的修复药脱敏化.
- 评估淋巴细胞亚种群,排斥发作,不良事件和患者结局.
主要成果:
- 在任何一组中都没有观察到AMR.
- 在移植后4周内,TCMR发生在38.5%的ABO-I受体和0%的ABO-C受体中 (P=0.0011).
- ABO-I接受者显示持续的B细胞枯竭和增加的T细胞,而ABO-C接受者则增加了B细胞.
结论:
- 在 ABO-I LT 中,利图西马布无敏化与较高的早期 TCMR 发生率有关.
- 瑞图西马布诱导的B细胞枯竭可能通过IL-2独立途径增强T细胞激活,从而导致TCMR.
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