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利用高通量测序技术分析外周血 T 细胞中 TCR-β 链 V-D-J 和 V-J 重排的 CDR3 文库。

Analyzing the CDR3 Repertoire with respect to TCR-Beta Chain V-D-J and V-J Rearrangements in Peripheral T Cells using HTS.

机构信息

Department of Immunology, Research Center for Medicine &Biology, Innovation &Practice Base for Graduate Students Education, Zunyi Medical University, Zunyi 563003, China.

Department of Laboratory Medicine, Zunyi Medical University, Zunyi 563003, China.

出版信息

Sci Rep. 2016 Jul 12;6:29544. doi: 10.1038/srep29544.

DOI:10.1038/srep29544
PMID:27404392
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4941575/
Abstract

V-D-J rearrangement of the TCR-beta chain follows the 12/23 rule and the beyond 12/23 restriction. Currently, the proportion and characteristics of TCR-beta chain V-J rearrangement is unclear. We used high-throughput sequencing to compare and analyze TCR-beta chain V-J rearrangement and V-D-J rearrangement in the CDR3 repertoires of T cells from the PBMCs of six volunteers and six BALB/c mice. The results showed that the percentage of V-J rearrangement of the volunteers was approximately 0.7%, whereas that of the mice was 2.2%. The clonality of mice V-J rearrangement was significantly reduced compared with the V-D-J rearrangement, whereas the clonality of human V-J rearrangement was slightly reduced compared with the V-D-J rearrangement. V-J rearrangement in CDR3 involved the significant usage of N, S, F and L, whereas V-D-J rearrangement in CDR3 involved the significant usage of R and G. The levels of V deletion and J deletion in V-J rearrangement were significantly reduced compared with V-D-J rearrangement. TRBD and TRBJ usage in V-J rearrangement differed from that of V-D-J rearrangement, including dominant usage of TRBV and TRBJ and their pairing. Taken together, these results provide new ideas and technology for studies of V-D-J rearrangement and V-J rearrangement in the CDR3 repertoire.

摘要

TCR-β 链的 V-D-J 重排遵循 12/23 规则和超过 12/23 的限制。目前,TCR-β 链 V-J 重排的比例和特征尚不清楚。我们使用高通量测序比较和分析了来自 6 名志愿者和 6 只 BALB/c 小鼠 PBMCs 的 T 细胞 CDR3 区的 TCR-β 链 V-J 重排和 V-D-J 重排。结果表明,志愿者的 V-J 重排比例约为 0.7%,而小鼠的 V-J 重排比例为 2.2%。与 V-D-J 重排相比,小鼠 V-J 重排的克隆性显著降低,而与 V-D-J 重排相比,人类 V-J 重排的克隆性略有降低。V-J 重排在 CDR3 中涉及 N、S、F 和 L 的显著使用,而 V-D-J 重排在 CDR3 中涉及 R 和 G 的显著使用。与 V-D-J 重排相比,V-J 重排中的 V 缺失和 J 缺失水平显著降低。V-J 重排中 TRBD 和 TRBJ 的使用与 V-D-J 重排不同,包括 TRBV 和 TRBJ 的优势使用及其配对。总之,这些结果为 CDR3 区 V-D-J 重排和 V-J 重排的研究提供了新的思路和技术。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/97c97a88c11f/srep29544-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/dc50cb63425e/srep29544-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/01739d2e0d4e/srep29544-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/a77309660ec9/srep29544-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/6bf5a8f3ec18/srep29544-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/e5ddb752edfb/srep29544-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/e8059665fa66/srep29544-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/78949fb624fe/srep29544-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/97c97a88c11f/srep29544-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/dc50cb63425e/srep29544-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/01739d2e0d4e/srep29544-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/a77309660ec9/srep29544-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/6bf5a8f3ec18/srep29544-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/e5ddb752edfb/srep29544-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/e8059665fa66/srep29544-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/78949fb624fe/srep29544-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85c6/4941575/97c97a88c11f/srep29544-f8.jpg

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