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Updated: May 28, 2025

T and B Cell Receptor Immune Repertoire Analysis using Next-generation Sequencing

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Published on: January 12, 2021

在原发性T细胞中进行的多奥米克分析揭示了与疾病相关的遗传局部背后的机制

Chenfu Shi¹, Danyun Zhao¹, Jake Butler^1,2

¹Centre for Genetics and Genomics Versus Arthritis, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.

|February 10, 2025

概括

这项研究提供了主要T细胞中染色质构成的最大数据集,将遗传变异与牛皮关节炎和类风湿性关节炎等自身免疫性疾病中的基因调节联系起来.

科学领域:

免疫学免疫学免疫学
基因组学就是基因组学.
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

全基因组关联研究 (GWAS) 识别了与疾病相关的遗传基因位点,但解释它们的调节功能是具有挑战性的.
调节区域,通常通过染色体构造来确定,对于基因调节至关重要.
之前的研究缺乏足够的样本大小,并利用了不朽的细胞系,限制了从原始细胞获得的洞察力.

研究的目的:

为了生成最广泛的染色体构造,基因表达和T细胞中染色体可访问性的数据集.
阐明GWAS变体影响原细胞基因调节的机制.
完善GWAS位点与调节元件的关联,并确定自身免疫性疾病中的因果基因.

主要方法:

从牛皮关节炎患者和健康对照的初级CD4+和CD8+T细胞生成了108个Hi-C,128个RNA-seq和126个ATAC-seq库.
在前所未有的规模上分析了染色质构成,基因表达和可访问性数据.
将GWAS loci映射到监管元素,如CTCF绑定站点和增强剂.

主要成果:

建立了最大的染色体构成,基因表达和初级T细胞中的可访问性数据集.
揭示了遗传变异如何影响原始细胞中的染色质可访问性和结构.
确定了BCL2L11作为位点rs13396472的风湿性关节炎的可能致病基因,并发现了位点rs4409785.5的SESN3失调.

结论:

这些发现通过突出特定基因在T细胞发育和成熟中的作用来加深对自身免疫性疾病病原学的理解.
确定了自身免疫和免疫介导疾病的潜在治疗点.
这一全面的数据集将成为未来对基因调节和免疫介导疾病的研究的宝贵资源.

关键词:

染色体的形状是如何形成的在GWAS中,GWAS就是GWAS.基因调节基因调节这就是Hi-C.炎症性疾病是一种炎症性疾病.QTLs 是一个 QTL.

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