Human immunodeficiency virus type 1 regulator of virion expression messenger RNA (HIV-1 rev mRNA) (HIV-1 rev mRNA)

Human immunodeficiency virus type 1 (HIV-1) regulator of virion expression (rev) messenger RNA is a vital component of the viral replication cycle, encoding the Rev protein which is essential for the transition from the early to late phase of infection (Pollard & Malim, 1998). The Rev protein facilitates the nuclear export of unspliced and singly spliced viral transcripts—which are otherwise sequestered in the nucleus—by binding to a highly structured 350-nucleotide segment within the mRNA known as the Rev-responsive element (RRE) (Fernandes et al., 2012). This transport is mandatory for the synthesis of structural proteins like Gag, Pol, and Env, as well as the packaging of the viral genome. As a therapeutic target, HIV-1 rev mRNA is primarily addressed using RNA-based technologies, including antisense oligonucleotides (e.g., GEM91) and small interfering RNAs (siRNAs) designed to induce transcript degradation or block the Rev-RRE interaction (Rossi, 1991; Coburn & Cullen, 2002). Small molecules and ribozymes have also been explored to competitively inhibit Rev binding or cleave the mRNA sequence. Targeting this pathway offers a mechanism to inhibit viral production that is distinct from standard antiretroviral therapies, though the high mutation rate of HIV-1 remains a significant barrier to long-term efficacy.

Other names

HIV-1 rev transcriptRev-encoding mRNAHIV-1 rev-responsive element containing RNARev-RRE complex RNA

Inhibition of viral protein translation and disruption of Rev-mediated nuclear export of unspliced viral transcripts through antisense-mediated degradation or steric hindrance of the Rev-RRE interaction.