Expert Reviews in Molecular Medicine

Review Article

Interactions of host APOBEC3 restriction factors with HIV-1 in vivo: implications for therapeutics

John S. Albina1 and Reuben S. Harrisa1 c1

a1 Department of Biochemistry, Molecular Biology & Biophysics, Institute for Molecular Virology, Center for Genome Engineering, University of Minnesota, Minneapolis, MN 55455, USA.

Abstract

Restriction factors are natural cellular proteins that defend individual cells from viral infection. These factors include the APOBEC3 family of DNA cytidine deaminases, which restrict the infectivity of HIV-1 by hypermutating viral cDNA and inhibiting reverse transcription and integration. HIV-1 thwarts this restriction activity through its accessory protein virion infectivity factor (Vif), which uses multiple mechanisms to prevent APOBEC3 proteins such as APOBEC3G and APOBEC3F from entering viral particles. Here, we review the basic biology of the interactions between human APOBEC3 proteins and HIV-1 Vif. We also summarise, for the first time, current clinical data on the in vivo effects of APOBEC3 proteins, and survey strategies and progress towards developing therapeutics aimed at the APOBEC3–Vif axis.

Correspondence

c1 Corresponding author: Reuben Harris, Department of Biochemistry, Molecular Biology & Biophysics, Institute for Molecular Virology, Center for Genome Engineering, University of Minnesota, 6-155 Jackson Hall, 321 Church Street SE, Minneapolis, MN 55455, USA. E-mail: rsh@umn.edu