期刊
IMMUNITY
卷 53, 期 5, 页码 985-+出版社
CELL PRESS
DOI: 10.1016/j.immuni.2020.09.005
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资金
- Swiss National Science Foundation (SNSF) [310030B_179570]
- Swiss Cancer League (SCL) [KFS-4407-02-2018]
- SCL [KFS-3390-08-2016, KFS-4600-08-2018, KFS-3971-08-2016]
- Breast Cancer Research Foundation
- SNSF [310030_179459, 31003A-166161]
- Swiss National Science Foundation (SNF) [310030B_179570, 310030_179459, 31003A_166161] Funding Source: Swiss National Science Foundation (SNF)
Central memory CD8(+) T cells (Tcm) control systemic secondary infections and can protect from chronic infection and cancer as a result of their stem-cell-like capacity to expand, differentiate, and self-renew. Central memory is generally thought to emerge following pathogen clearance and to form based on the de-differentiation of cytolytic effector cells. Here, we uncovered rare effector-phase CD8(+) T cells expressing high amounts of the transcription factor Tcf7 (Tcf1) that showed no evidence of prior cytolytic differentiation and that displayed key hallmarks of Tcm cells. These effector-phase Tcf7(hi) cells quantitatively yielded Tcm cells based on lineage tracing. Mechanistically, Tcf1 counteracted the differentiation of Tcf7(hi) cells and sustained the expression of conserved adult stem-cell genes that were critical for CD8(+) T cell stemness. The discovery of stem-cell-like CD8(+) T cells during the effector response to acute infection provides an opportunity to optimize Tcm cell formation by vaccination.
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