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Updated: Jun 23, 2026

Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy
Published on: September 5, 2016
4-Thio-uridylate (UD29) interferes with the function of protein -SH and inhibits HIV replication in vitro
Zoltán Beck1, Andrea Kis, Erika Berényi
1Department of Medical Microbiology, Medical and Health Science Center, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen H 4012, Hungary.
Abstract:
In this short communication, it is shown that 4-thio-uridylate (s(4)UMP, designated as UD29) inhibits glyceraldehyde 3-phosphate dehydrogenase (GAPDH), suggesting that the enol-form of the thiolated nucleotide may interfere with the function of the essential -SH group in the active center of the enzyme. Since HIV entry requires thiol/disulfide exchange processes, this activity prompted us to study the anti-HIV activity of the nucleotide. Indeed, UD29 inhibited the replication of HIV-1(IIIB) in the MT-4 cell line and HIV-1(Ada-M) in peripheral blood mononuclear cells (PBMC). Furthermore, UD29 was not toxic in PBMCs in vitro or in mice when the compound was administered intravenously.
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