CD94 is essential for NK cell-mediated resistance to a lethal viral disease.
CD94 is essential for NK cell-mediated resistance to a lethal viral disease.
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DOI:
10.1016/j.immuni.2011.02.015
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发表时间:
2011-04-22
期刊:
影响因子:
32.4
通讯作者:
Sigal LJ
中科院分区:
文献类型:
--
作者:
Fang M;Orr MT;Spee P;Egebjerg T;Lanier LL;Sigal LJ
It is well established that natural killer (NK) cells confer resistance to many viral diseases, but in only a few instances the molecular mechanisms whereby NK cells recognize virus-infected cells are known. Here we show that CD94, a molecule preferentially expressed by NK cells, is essential for the resistance of C57BL/6 mice to mousepox, a disease caused by the Orthopoxvirus ectromelia virus. Ectromelia virus-infected cells expressing the major histocompatibility complex (MHC) class Ib molecule Qa-1b are specifically recognized by the activating receptor formed by CD94 and NKG2E. Because CD94-NKG2 receptors and their ligands are highly conserved in rodents and humans, a similar mechanism may exist during human infections with the smallpox and monkeypox viruses, which are highly homologous to ectromelia virus. ► Deficiency in CD94 results in susceptibility to lethal mousepox ► NK cells require CD94 to protect from mousepox ► CD94-NKG2E recognizes ECTV-infected cells in a Qa-1b-dependent manner
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