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• W3163358854 endingPage "2039" @default.
• W3163358854 startingPage "2027" @default.
• W3163358854 abstract "Abstract Immune deficiency is one of the hallmarks of HIV infection and a major cause of adverse outcomes in people living with HIV (PLWH). Long‐lived memory CD8 + T cells (LLMCs) are essential executors of long‐term protective immunity; however, the generation and maintenance of LLMCs during chronic HIV infection are not well understood. In the present study, we analyzed circulating LLMCs in healthy controls (HCs) and PLWH with different disease statuses, including treatment naïve patients (TNs), complete responders (CRs), and immunological nonresponders (INRs). We found that both TNs and INRs showed severely compromised LLMCs compared with HCs and CRs, respectively. The decrease of LLMCs in TNs correlated positively with the reduction of their precursors, namely memory precursor effector T cells (MPECs), which might be associated with elevated pro‐inflammatory cytokines. Strikingly, INRs showed an accumulation of MPECs, which exhibited diminished responsiveness to interleukin 7 (IL‐7), thereby indicating abrogated differentiation into LLMCs. Moreover, in vitro studies showed that treatment with dexamethasone could improve the IL7‐phosphorylated (p)‐signal transducer and activator of transcription (STAT5) response by upregulating the expression of the interleukin 7 receptor (IL‐7Rα) on MPECs in INRs. These findings provide insights that will encourage the development of novel therapeutics to improve immune function in PLWH." @default.
• W3163358854 created "2021-05-24" @default.
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• W3163358854 date "2021-05-29" @default.
• W3163358854 modified "2023-10-15" @default.
• W3163358854 title "Compromised long‐lived memory CD8⁺ T cells are associated with reduced IL‐7 responsiveness in HIV‐infected immunological nonresponders" @default.
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• W3163358854 doi "https://doi.org/10.1002/eji.202149203" @default.

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