PMID- 36466875 OWN - NLM STAT- MEDLINE DCOM- 20221206 LR - 20221206 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Rapid identification of CMV-specific TCRs via reverse TCR cloning system based on bulk TCR repertoire data. PG - 1021067 LID - 10.3389/fimmu.2022.1021067 [doi] LID - 1021067 AB - Advances in next-generation sequencing (NGS) have improved the resolution of T-cell receptor (TCR) repertoire analysis, and recent single-cell sequencing has made it possible to obtain information about TCR pairs. In our previous study, cytomegalovirus (CMV) pp65-specific T-cell response restricted by a single human leukocyte antigen (HLA) class I allotype was observed in an individual. Therefore, to effectively clone an antigen-specific TCR from these T cells, we developed a TCR cloning system that does not require a single cell level. First, we established the improved Jurkat reporter cell line, which was TCRalphabeta double knock-out and expressed CD8alphabeta molecules. Furthermore, functional TCRs were directly obtained by reverse TCR cloning using unique CDR3-specific PCR primers after bulk TCR sequencing of activation marker-positive CD8 T cells by NGS. A total of 15 TCRalpha and 14 TCRbeta strands were successfully amplified by PCR from cDNA of 4-1BB-positive CD8 T cells restricted by HLA-A*02:01, HLA-A*02:06, HLA-B*07:02, and HLA-B*40:06. The panels with combinations of TCRalpha and TCRbeta genes were investigated using Jurkat reporter cell line and artificial antigen-presenting cells (APCs). In two TCR pairs restricted by HLA-A*02:01, one TCR pair by HLA-A*02:06, four TCR pairs by HLA-B*07:02, and one TCR pair by HLA-B*40:06, their specificity and affinity were confirmed. The TCR pair of A*02:01/1-1 showed alloreactivity to HLA-A*02:06. The one TCR pair showed a higher response to the naturally processed antigen than that of the peptide pool. This reverse TCR cloning system will not only provide functional information to TCR repertoire analysis by NGS but also help in the development of TCR-T therapy. CI - Copyright (c) 2022 Hong, Pyo, Baek and Kim. FAU - Hong, Cheol-Hwa AU - Hong CH AD - Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, South Korea. AD - Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea. AD - Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, South Korea. FAU - Pyo, Hong-Seon AU - Pyo HS AD - Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, South Korea. AD - Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea. FAU - Baek, In-Cheol AU - Baek IC AD - Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, South Korea. FAU - Kim, Tai-Gyu AU - Kim TG AD - Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea. AD - Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, South Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221118 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Receptors, Antigen, T-Cell) SB - IM MH - Humans MH - *Receptors, Antigen, T-Cell/genetics MH - Cell Membrane MH - DNA Repair MH - Cloning, Molecular MH - *Cytomegalovirus Infections PMC - PMC9716090 OTO - NOTNLM OT - CMV OT - NGS - next generation sequencing OT - TCR - T cell receptor OT - artificial APC OT - reverse TCR cloning COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/12/06 06:00 MHDA- 2022/12/07 06:00 PMCR- 2022/01/01 CRDT- 2022/12/05 04:13 PHST- 2022/08/17 00:00 [received] PHST- 2022/10/31 00:00 [accepted] PHST- 2022/12/05 04:13 [entrez] PHST- 2022/12/06 06:00 [pubmed] PHST- 2022/12/07 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2022.1021067 [doi] PST - epublish SO - Front Immunol. 2022 Nov 18;13:1021067. doi: 10.3389/fimmu.2022.1021067. eCollection 2022.