Interleukin 1 beta and interleukin 6 potentiate retinoic acid-mediated repression of human immunodeficiency virus type 1 replication in macrophages.

All-trans-retinoic acid (RA) has been shown either to activate or repress human immunodeficiency virus type 1 (HIV-1) replication in primary monocyte-derived-macrophages (MDMs). We systematically investigated the contribution that cell donor and virus differences make to this variability. We found that the effect of RA was cell donor dependent.