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Functional responsiveness of memory T cells from COVID-19 patients #MMPMID33905951
Cell Immunol 2021[Jul]; 365 (ä): 104363 PMID33905951show ga
The presence of memory T cells in COVID-19 patients has been acknowledged, however the functional potency of memory responses is critical for protection. In this study, naive, effector, effector memory, and central memory CD4(+) and CD8(+) T cells obtained from the COVID-19 survivors were re-exposed to autologous monocyte-derived DCs that were loaded with SARS-CoV-2 spike glycoprotein S1. Proliferation capacity, CD25, 4-1BB, and PD-1 expression, and IFN-gamma, IL-6, granzyme, granulysin, and FasL secretion were enhanced in CD4(+) and CD8(+) effector memory and central memory T cells. Albeit being at heterogeneous levels, the memory T cells from the individuals with COVID-19 history possess functional capacities to reinvigorate anti-viral immunity against SARS-CoV-2.