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- W2112302007 abstract "Human immunodeficiency virus type 1 (HIV-1) is considered to infect nondividing cells because nuclear localization signals (NLS) in matrix (MA, p17Gag) and Vpr allow active nuclear transport of the preintegration complex. Previous studies demonstrated that HIV-1 reverse transcription is successful only in cells with proliferative potential, thus restricting HIV-1 replication to cycling cells. To sort out this apparent discrepancy we compared the phenotype of a chimeric HIV-1 variant lacking a functional Vpr and MA-NLS (R7.ΔVpr.ΔNLS), and previously described to lack replicative capacity in macrophages and growth-arrested cells, with a chimera lacking a functional Vpr (R7.ΔVpr). Both variants replicated efficiently in primary macrophages, with only minimal differences in the kinetics of reverse transcription, integration, or p24 production. In agreement with our previous observation, elongation of reverse transcription was restricted to the proliferating subpopulation of macrophages. Replication of R7.ΔVpr and R7.ΔVpr.ΔNLS could also be demonstrated in aphidicolin-treated macrophages, indicating efficient nuclear transport in G1/S phase-arrested cells. In conclusion, our results confirm the dependency of the process of HIV-1 reverse transcriptase on cell proliferation in primary macrophages and exclude an important role of MA-NLS and Vpr in macrophage infection." @default.
- W2112302007 created "2016-06-24" @default.
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- W2112302007 date "1999-01-01" @default.
- W2112302007 modified "2023-10-11" @default.
- W2112302007 title "Phenotype of HIV-1 Lacking a Functional Nuclear Localization Signal in Matrix Protein ofgagand Vpr Is Comparable to Wild-Type HIV-1 in Primary Macrophages" @default.
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- W2112302007 doi "https://doi.org/10.1006/viro.1998.9482" @default.
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