Host and viral determinants for MxB restriction of HIV-1 infection.

ABSTRACT:

Background

Interferon-induced cellular proteins play important roles in the host response against viral infection. The Mx family of dynamin-like GTPases, which include MxA and MxB, target a wide variety of viruses. Despite considerable evidence demonstrating the breadth of antiviral activity of MxA, human MxB was only recently discovered to specifically inhibit lentiviruses. Here we assess both host and viral determinants that underlie MxB restriction of HIV-1 infection.

Results

Heterologous expression of MxB in human osteosarcoma cells potently inhibited HIV-1 infection (~12-fold), yet had little to no effect on divergent retroviruses. The anti-HIV effect manifested as a partial block in the formation of 2-long terminal repeat circle DNA and hence nuclear import, and we acc

SUBMITTER: Matreyek KA 

PROVIDER: S-EPMC4213484 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature