Memory programming in CD8+T-cell differentiation is intrinsic and is not determined by CD4 help
- 등재 SCIE, SCOPUS
- 발행기관 Nature Publishing Group
- 발행년도 2015
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000119115
- 본문언어 영어
- Published As http://dx.doi.org/10.1038/ncomms8994
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
CD8+ T cells activated without CD4+ T-cell help are impaired in memory expansion. To understand the underlying cellular mechanism, here we track the dynamics of helper-deficient CD8+ T-cell response to a minor histocompatibility antigen by phenotypic and in vivo imaging analyses. Helper-deficient CD8+ T cells show reduced burst expansion, rapid peripheral egress, delayed antigen clearance and continuous activation, and are eventually exhausted. Contrary to the general consensus that CD4 help encodes memory programmes in CD8+ T cells and helper-deficient CD8+ T cells are abortive, these cells can differentiate into effectors and memory precursors. Importantly, accelerating antigen clearance or simply increasing the burst effector size enables generation of memory cells by CD8+ T cells, regardless of CD4 help. These results suggest that the memory programme is CD8+ T-cell-intrinsic, and provide insight into the role of CD4 help in CD8+ T-cell responses. © 2015 Macmillan Publishers Limited. All rights reserved.
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