Retrovirus restriction by TRIM5α variants from old world and new world primates

被引:199
作者
Song, B
Javanbakht, H
Perron, M
Park, DH
Stremlau, M
Sodroski, J
机构
[1] Harvard Univ, Sch Med, Dana Farber Canc Inst, Dept Pathol,Div AIDS,Dept Canc Immunol & AIDS, Boston, MA 02115 USA
[2] Harvard Univ, Sch Publ Hlth, Dept Immunol & Infect Dis, Boston, MA 02115 USA
关键词
D O I
10.1128/JVI.79.7.3930-3937.2005
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The TRIM5 alpha proteins of humans and some Old World monkeys have been shown to block infection of particular retroviruses following virus entry into the host cell. Infection of most New World monkey cells by the simian immunodeficiency virus of macaques (SIVmac) is restricted at a similar point. Here we examine the antiretroviral activity of TRIM5 alpha orthologs from humans, apes, Old World monkeys, and New World monkeys. Chimpanzee and orangutan TRIM5 alpha proteins functionally resembled human TRIM5 alpha, potently restricting infection by N-tropic murine leukemia virus (N-MLV) and moderately restricting human immunodeficiency virus type 1 (HIV-1) infection. Notably, TRIM5 alpha proteins from several New World monkey species restricted infection by SIVmac and the SIV of African green monkeys, SIVagm. Spider monkey TRIM5 alpha, which has an expanded B30.2 domain v3 region due to a tandem triplication, potently blocked infection by a range of retroviruses, including SIVmac, SIVagm, HIV-1, and N-MLV. Tandem duplications in the TRIM5 alpha B30.2 domain v1 region of African green monkeys are also associated with broader antiretroviral activity. Thus, variation in TRIM5 alpha proteins among primate species accounts for the observed patterns of postentry restrictions in cells from these animals. The TRIM5 alpha proteins of some monkey species exhibit dramatic lengthening of particular B30.2 variable regions and an expanded range of susceptible retroviruses.
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页码:3930 / 3937
页数:8
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