Abstract:
:Human immunodeficiency virus type 1 (HIV-1) specifically incorporates the host cell peptidyl-prolyl isomerase cyclophilin A into virions via contacts with the capsid (CA) domain of the Gag polyprotein Pr55gag. The immunosuppressant drug cyclosporin A and the nonimmunosuppressive cyclosporin A analog SDZ NIM 811 bind to cyclophilin A and inhibit its incorporation into HIV-1 virions. Both drugs inhibit the virion association of cyclophilin A and the replication of HIV-1 with a similar dose dependence. In contrast, these compounds are inactive against other primate lentiviruses which do not incorporate cyclophilin A, such as simian immunodeficiency virus (SIV). To locate determinants which confer sensitivity to SDZ NIM 811, we generated chimeric proviruses between HIV-1 and SIVmac. A hybrid SIVmac which has the CA-p2 domain of the Gag polyprotein replaced by the corresponding domain from HIV-1 replicated in an established CD4+ cell line and in human but not macaque peripheral blood mononuclear cells. The transfer of the HIV-1 CA-p2 domain to SIVmac led to the efficient incorporation of cyclophilin A, and SDZ NIM 811 effectively inhibited both the virion association of cyclophilin A and the spread of the hybrid virus in infected cultures. We conclude that the HIV-1 CA-p2 domain contains determinants which confer the necessity to interact with cyclophilin A for efficient virus replication. Furthermore, our data show that the CA-p2 domain can play a crucial role in species tropism.
journal_name
J Viroljournal_title
Journal of virologyauthors
Dorfman T,Göttlinger HGdoi
10.1128/JVI.70.9.5751-5757.1996subject
Has Abstractpub_date
1996-09-01 00:00:00pages
5751-7issue
9eissn
0022-538Xissn
1098-5514journal_volume
70pub_type
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/JVI.67.1.360-365.1993
更新日期:1993-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/jvi.78.8.4037-4047.2004
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doi:10.1128/JVI.4.1.109-112.1969
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journal_title:Journal of virology
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/jvi.77.20.10799-10807.2003
更新日期:2003-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-09-01 00:00:00