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Journal articles
IFN-γ-producing CD45RA+ CD8+ and IL-10-producing CD45RA- CD4+ T cells generated in response to LACK in naive subjects never exposed toLeishmania
Abstract : Leishmania guyanensis (L.g.)-specific CD8+ T cells can be isolated from PBMC of subjects who have never been previously exposed to Leishmania. Cells that produce IFN-gamma in response to live L.g. are generated from naive CD45RA+CD8+ T cells. The generation of L.g.-specific CD8+ T cells requires the presence of whole L.g. or UV-irradiated parasite but not the soluble antigens from L.g. promastigotes. The IFN-gamma-producing T cells recognize a specific antigen, the Leishmania homologue of receptors of activated C kinases (LACK) and this antigen but not live L.g. can produce a strong IL-10 response in CD45RA-CD4+ memory T cells from naive subjects. A single epitope (amino acid 156-173) is found to induce the IL-10 synthesis. While the IFN-gamma-producing cells are present among CD45RA+CD8+ T cells that are CD62L-CDR7- and CLA-, the LACK-reactive IL-10-producing cells are CD4+ T cells that are CD62L+CCR7- and CLA-.
https://hal.univ-guyane.fr/hal-03284784
Contributor : Mirlène Matillon <>
Submitted on : Monday, July 12, 2021 - 7:07:44 PM
Last modification on : Tuesday, July 13, 2021 - 3:36:58 AM
Contributor : Mirlène Matillon <>
Submitted on : Monday, July 12, 2021 - 7:07:44 PM
Last modification on : Tuesday, July 13, 2021 - 3:36:58 AM
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