This project focuses on basic and applied research on human retroviruses, HIV-1 and HTLV-I. It covers three broad areas: I) basic research studying the regulated expression of HIV-1; II) basic research on cellular transformation events as related to HTLV-I; and III) applied research towards developing small molecular inhibitors targeted against HIV-1. Some notable scientific advances from our research program in 2005-2006 include: 1) the discovery of compounds that inhibit human RNA helicase DDX3 which is a cellular cofactor for HIV-1 post-transcriptional gene expression; 2) the study of siRNAs and miRNAs that can regulate HIV-1 replication and HTLV-1 transformation of cells; 3) the development of a microarray assay for measuring changes in cellular miRNA expression profiles; 4) the study of check point dysfunction in HTLV-1 transformed cells, 5) the characterization of centrosomal abnormalities caused by the HTLV-1 Tax oncoprotein; 6) the identification of Akt as a signal transducer of Tax's transforming function.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Intramural Research (Z01)
Project #
1Z01AI000547-18
Application #
7300450
Study Section
(LMM)
Project Start
Project End
Budget Start
Budget End
Support Year
18
Fiscal Year
2006
Total Cost
Indirect Cost
Name
Niaid Extramural Activities
Department
Type
DUNS #
City
State
Country
United States
Zip Code
Yeung, Man Lung; Houzet, Laurent; Yedavalli, Venkat S R K et al. (2009) A genome-wide short hairpin RNA screening of jurkat T-cells for human proteins contributing to productive HIV-1 replication. J Biol Chem 284:19463-73
Yeung, Man Lung; Bennasser, Yamina; Watashi, Koichi et al. (2009) Pyrosequencing of small non-coding RNAs in HIV-1 infected cells: evidence for the processing of a viral-cellular double-stranded RNA hybrid. Nucleic Acids Res 37:6575-86
Grassmann, Ralph; Jeang, Kuan-Teh (2008) The roles of microRNAs in mammalian virus infection. Biochim Biophys Acta :
Berkhout, Ben; Jeang, Kuan-Teh (2007) RISCy business: MicroRNAs, pathogenesis, and viruses. J Biol Chem 282:26641-5
Yeung, Man Lung; Bennasser, Yamina; Le, Shu-Yun et al. (2007) RNA interference and HIV-1. Adv Pharmacol 55:427-38
Yeung, Man Lung; Benkirane, Monsef; Jeang, Kuan-Teh (2007) Small non-coding RNAs, mammalian cells, and viruses: regulatory interactions? Retrovirology 4:74
Yedavalli, Venkat R K; Jeang, Kuan-Teh (2007) Methylation: a regulator of HIV-1 replication? Retrovirology 4:9
Triboulet, Robinson; Mari, Bernard; Lin, Yea-Lih et al. (2007) Suppression of microRNA-silencing pathway by HIV-1 during virus replication. Science 315:1579-82
Bennasser, Yamina; Yeung, Man Lung; Jeang, Kuan-Teh (2007) RNAi therapy for HIV infection: principles and practicalities. BioDrugs 21:17-22
Yeung, Man Lung; Bennasser, Yamina; Jeang, Kuan-Teh (2007) miRNAs in the biology of cancers and viral infections. Curr Med Chem 14:191-7

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