Human cytomegalovirus-infected cells have unstable assembly of major histocompatibility complex class I complexes and are resistant to lysis by cytotoxic T lymphocytes
Human cytomegalovirus-infected cells have unstable assembly of major histocompatibility complex class I complexes and are resistant to lysis by cytotoxic T lymphocytes
复制标题
人巨细胞病毒感染的细胞具有不稳定的主要组织相容性复合物 I 类复合物的组装,并且能够抵抗细胞毒性 T 淋巴细胞的裂解
作者:
A. P. Warren;D. Ducroq;P. Lehner;L. Borysiewicz
Viruses which cause persistence in the naturally infected host are predicted to have evolved immune evasion mechanisms. Human cytomegalovirus (HCMV) causes significant morbidity and mortality in immunocompromised patients yet persists without clinical manifestations in seropositive individuals who have normal immune function. We report that HCMV infection in vitro impairs major histocompatibility complex class I (MHC-I) assembly accompanied by resistance to killing by cytotoxic CD8+ T lymphocytes. Pulse-chase metabolic labelling experiments show that MHC-I complexes continue to be assembled by both uninfected and HCMV-infected cells. However, MHC-I molecules are unstable in HCMV-infected cells and are rapidly broken down. Endoglycosidase H treatment of immunoprecipitates indicates that the breakdown of MHC-I complexes in HCMV-infected cells occurs primarily in a pre-Golgi compartment. Interference with normal MHC-I assembly and expression, if relevant in vivo, may have implications for the restriction of the diversity of the CD8+ cytotoxic T lymphocyte repertoire directed against HCMV antigens and may be an important mechanism of viral persistence.
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影响因子:
3.7
作者:
Tanaka,Y;Tevethia,SS
通讯作者:
Tevethia,SS
DOI:
10.1089/dna.1983.2.329
发表时间:
1983-01-01
期刊:
DNA-A JOURNAL OF MOLECULAR & CELLULAR BIOLOGY
影响因子:
--
作者:
CATHALA, G;SAVOURET, JF;BAXTER, JD
通讯作者:
BAXTER, JD
DOI:
--
发表时间:
1991
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Riddell,SR;Rabin,M;Geballe,AP;Britt,WJ;Greenberg,PD
通讯作者:
Greenberg,PD
DOI:
10.1172/jci116317
发表时间:
1993
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Koelle,DM;Tigges,MA;Burke,RL;Symington,FW;Riddell,SR;Abbo,H;Corey,L
通讯作者:
Corey,L