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- Title
Interplay between HIV-1 infection and host microRNAs.
- Authors
Sun, Guihua; Li, Haitang; Wu, Xiwei; Covarrubias, Maricela; Scherer, Lisa; Meinking, Keith; Luk, Brian; Chomchan, Pritsana; Alluin, Jessica; Gombart, Adrian F; Rossi, John J
- Abstract
Using microRNA array analyses of in vitro HIV-1-infected CD4(+) cells, we find that several host microRNAs are significantly up- or downregulated around the time HIV-1 infection peaks in vitro. While microRNA-223 levels were significantly enriched in HIV-1-infected CD4(+)CD8(-) PBMCs, microRNA-29a/b, microRNA-155 and microRNA-21 levels were significantly reduced. Based on the potential for microRNA binding sites in a conserved sequence of the Nef-3'-LTR, several host microRNAs potentially could affect HIV-1 gene expression. Among those microRNAs, the microRNA-29 family has seed complementarity in the HIV-1 3'-UTR, but the potential suppressive effect of microRNA-29 on HIV-1 is severely blocked by the secondary structure of the target region. Our data support a possible regulatory circuit at the peak of HIV-1 replication which involves downregulation of microRNA-29, expression of Nef, the apoptosis of host CD4 cells and upregulation of microRNA-223.
- Publication
Nucleic acids research, 2012, Vol 40, Issue 5, p2181
- ISSN
1362-4962
- Publication type
Journal Article
- DOI
10.1093/nar/gkr961