DOCK8 deficiency impairs CD8 T cell survival and function in humans and mice.
DOCK8 deficiency impairs CD8 T cell survival and function in humans and mice.
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DOCK8 缺陷会损害人类和小鼠的 CD8 T 细胞存活和功能。
DOI:
10.1084/jem.20110345
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发表时间:
2011-10-24
期刊:
影响因子:
--
通讯作者:
Goodnow CC
中科院分区:
文献类型:
--
作者:
Randall KL;Chan SS;Ma CS;Fung I;Mei Y;Yabas M;Tan A;Arkwright PD;Al Suwairi W;Lugo Reyes SO;Yamazaki-Nakashimada MA;Garcia-Cruz Mde L;Smart JM;Picard C;Okada S;Jouanguy E;Casanova JL;Lambe T;Cornall RJ;Russell S;Oliaro J;Tangye SG;Bertram EM;Goodnow CC
As shown by analysis of mice and humans bearing DOCK8-inactivating mutations, DOCK8 plays a cell-autonomous role in survival of naive CD8 T cells, LFA-1 polarization toward the immune synapse, and CD8 T cell memory and recall responses following viral infection. In humans, DOCK8 immunodeficiency syndrome is characterized by severe cutaneous viral infections. Thus, CD8 T cell function may be compromised in the absence of DOCK8. In this study, by analyzing mutant mice and humans, we demonstrate a critical, intrinsic role for DOCK8 in peripheral CD8 T cell survival and function. DOCK8 mutation selectively diminished the abundance of circulating naive CD8 T cells in both species, and in DOCK8-deficient humans, most CD8 T cells displayed an exhausted CD45RA+CCR7− phenotype. Analyses in mice revealed the CD8 T cell abnormalities to be cell autonomous and primarily postthymic. DOCK8 mutant naive CD8 T cells had a shorter lifespan and, upon encounter with antigen on dendritic cells, exhibited poor LFA-1 synaptic polarization and a delay in the first cell division. Although DOCK8 mutant T cells underwent near-normal primary clonal expansion after primary infection with recombinant influenza virus in vivo, they showed greatly reduced memory cell persistence and recall. These findings highlight a key role for DOCK8 in the survival and function of human and mouse CD8 T cells.
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