Role of PSIP1/LEDGF/p75 in lentiviral infectivity and integration targeting.

ABSTRACT:

Background

To replicate, lentiviruses such as HIV must integrate DNA copies of their RNA genomes into host cell chromosomes. Lentiviral integration is favored in active transcription units, which allows efficient viral gene expression after integration, but the mechanisms directing integration targeting are incompletely understood. A cellular protein, PSIP1/LEDGF/p75, binds tightly to the lentiviral-encoded integrase protein (IN), and has been reported to be important for HIV infectivity and integration targeting.

Methodology

Here we report studies of lentiviral integration targeting in 1) human cells with intensified RNAi knockdowns of PSIP1/LEDGF/p75, and 2) murine cells with homozygous gene trap mutations in the PSIP1/LEDGF/p75 locus. Infections with vectors derived from

SUBMITTER: Marshall HM 

PROVIDER: S-EPMC2129110 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature