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scRNA + TCR-seq revealed the dual TCR pTh17 and Treg T cells involvement in autoimmune response in ankylosing spondylitis.
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- Author(s): Yuanyuanxu1 (AUTHOR); Qipeng1 (AUTHOR); Qingqingma1,2 (AUTHOR); Yao, Xinsheng1 (AUTHOR)
- Source:
International Immunopharmacology. Jun2024, Vol. 135, pN.PAG-N.PAG. 1p.- Subject Terms:
- Source:
- Additional Information
- Abstract: Th17 and Treg play important roles in AS, but their single and dual TCR pairing types, ratios, and CDR3 characteristics remain unknown. Single-cell RNA + TCR-seq results from six AS patients were used to cluster T-cell subpopulations and analyze the single and dual TCR T cell ratio, diversity/clonality/overlap of CDR3, and expression of transcription factors. 1. AS patients have about 10% of dual TCR T cells, and SFMC have decreased diversity CDR3 libraries and significant clonal proliferation compared to PBMC. 2. Dual TCR ratio: memory T > naive T; pTh 17 > Th17; Treg /Th17/Th1/EM significantly higher than naive CD4 + T/CM, Pathogenic Th17 cells contain clonally proliferating single TCR and dual TCR cells. 3. The expression of single TCR and dual TCR transcription factors of each T cell subpopulation was basically the same, but there was differential expression of characteristic transcription factors, e.g. Foxp3 , CTLA4 , STAT5B , IL10RB , LAG3 in dual TCR Treg was higher than that of single TCR Treg; TNFSF10/12 , TNFRSF4/14 , CCL5 , KLRB1 in dual TCR pTh17 were significantly higher than those in single TCR pTh17. 4. Between naive CD4 + T, pTh17, Th1 and Treg, there are partially identity identical tcr paired cells. The high proportion of dual TCR T cells such as pTh17 and Treg in AS and the high expression of some transcription factors suggested a close association with self-response in AS; The overlap of CDR3 between Th1, Th17,pTh17, and Treg in AS suggested that the subpopulations may be differentiated from each other to regulate the inflammatory homeostasis and progression. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of International Immunopharmacology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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