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- W3008135251 abstract "Abstract The Vγ9Vδ2 T cell subset is the major γδ T cell subset in human peripheral blood and has the unique ability to contribute to immune surveillance by detecting pyrophosphorylated metabolites of isoprenoid synthesis, termed phosphoantigens (pAgs). Vγ9Vδ2 T cells are first detected at midgestation and show postnatal expansion. Interestingly, neonatal Vγ9Vδ2 T cells display a higher TCR repertoire diversity with more public clonotypes and lower pAg responsiveness than in adults. Notably, it is not known whether postnatal changes occur by TCR-dependent reactivity to pAg exposure. Here, we applied next-generation sequencing of γδ TCR repertoires to understand potential differences in the pAg-mediated response of neonatal and adult Vγ9Vδ2 T cells at the level of the expressed γδ TCR. We observed a polyclonal pAg-induced response of neonatal and adult Vγ9Vδ2 T cells, albeit neonatal γδ T cells showed less in vitro pAg responsiveness. Neonatal Vγ9Vδ2 T cells displayed a less pronounced bias for Jδ1 usage and a more frequent use of Jδ2 or Jδ3 that remained stable after pAg exposure. In addition, public and private Vδ2 TRD clones took part in the polyclonal pAg-induced response in neonates and adults. In conclusion, adult and neonatal Vγ9Vδ2 T cells both undergo polyclonal pAg-induced proliferation, whereas especially adult Vγ9Vδ2 T cells display a high stability at the level of the expressed TCR repertoire." @default.
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- W3008135251 date "2020-02-17" @default.
- W3008135251 modified "2023-10-18" @default.
- W3008135251 title "TCR repertoire analysis reveals phosphoantigen-induced polyclonal proliferation of Vγ9Vδ2 T cells in neonates and adults" @default.
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- W3008135251 doi "https://doi.org/10.1002/jlb.1ma0120-427rr" @default.
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