Acetylation of Cytidine Residues Boosts HIV-1 Gene Expression by Increasing Viral RNA Stability.

Journal Article (Journal Article)

Epitranscriptomic RNA modifications, including methylation of adenine and cytidine residues, are now recognized as key regulators of both cellular and viral mRNA function. Moreover, acetylation of the N4 position of cytidine (ac4C) was recently reported to increase the translation and stability of cellular mRNAs. Here, we show that ac4C and N-acetyltransferase 10 (NAT10), the enzyme that adds ac4C to RNAs, have been subverted by human immunodeficiency virus 1 (HIV-1) to increase viral gene expression. HIV-1 transcripts are modified with ac4C at multiple discrete sites, and silent mutagenesis of these ac4C sites led to decreased HIV-1 gene expression. Similarly, loss of ac4C from viral transcripts due to depletion of NAT10 inhibited HIV-1 replication by reducing viral RNA stability. Interestingly, the NAT10 inhibitor remodelin could inhibit HIV-1 replication at concentrations that have no effect on cell viability, thus identifying ac4C addition as a potential target for antiviral drug development.

Full Text

Duke Authors

Cited Authors

  • Tsai, K; Jaguva Vasudevan, AA; Martinez Campos, C; Emery, A; Swanstrom, R; Cullen, BR

Published Date

  • August 12, 2020

Published In

Volume / Issue

  • 28 / 2

Start / End Page

  • 306 - 312.e6

PubMed ID

  • 32533923

Pubmed Central ID

  • PMC7429276

Electronic International Standard Serial Number (EISSN)

  • 1934-6069

Digital Object Identifier (DOI)

  • 10.1016/j.chom.2020.05.011


  • eng

Conference Location

  • United States