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在免疫球蛋白甲病症中T细胞受体谱的表征

Szu-Ying Ho¹, Chih-Chin Kao^2,3,4, Che-Mai Chang¹

¹Department of Clinical Pharmacy, School of Pharmacy, Taipei Medical University, No. 250, Wuxing St., Xinyi District, Taipei City, 11031, Taiwan.

Biomarker research

|February 11, 2024

概括

通过分析T细胞受体 (TCR) 库,可以改善免疫球蛋白A脏病 (IgAN) 诊断. 周围血液中TCR多样性的减少和特定基因的使用为Igan提供了潜在的生物标志物.

科学领域:

免疫学免疫学免疫学
基因组学就是基因组学.
腎臟病學 (nephrology) 是一種醫學專業.

背景情况:

免疫球蛋白A脏病 (IgAN) 诊断依赖于侵入性脏活检.
对于IgAN.有需要的非侵入性诊断生物标志物.
在外周血液中研究T细胞受体 (TCR) 谱系提供了一个潜在的替代方案.

研究的目的:

研究Igan患者外周血液中T细胞受体β链 (TCRβ) 谱系特征.
通过免疫谱系测序来识别Igan诊断的潜在的非侵入性生物标志物.
探索IGAN,非IgAN和健康个体之间的TCRβ谱系多样性和基因使用的差异.

主要方法:

从外围血液样本中对T细胞受体β链 (TCRβ) 的高通量免疫谱系测序.
对TCRβ谱系多样性和T细胞受体互补性的比较分析,确定区域3 (CDR3) 长度分布.
评估跨研究组的T细胞受体变量β (TRBV) 基因使用情况.

主要成果:

与对照组相比,在IgAN患者中观察到TCRβ谱系多样性的减少.
在非IgAN患者和IgAN患者中,观察到向较短的TCRβCDR3长度倾斜的分布.
在特定TRBV基因 (TRBV5-4,TRBV6-4,TRBV12-1,TRBV16,TRBV21-1) 的使用中发现了显著的差异,在Igan患者中使用TRBV6-4更高.

结论:

包括多样性和基因使用在内的TCRβ谱的特征在IGAN患者中显著不同.
与粘膜关联不变T细胞 (MAIT) 相关的TRBV6-4的使用增加,表明MAIT细胞在Igan病原发生过程中可能发挥作用.
对于免疫球蛋白A脏病的非侵入性诊断生物标志物的开发,TCR谱的分析提供了一个有前途的途径.

关键词:

免疫球蛋白A脏病 (IgAN) 发生在T细胞受体 (TCR) 谱中.TCR 测序的测序方法

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