PMID- 19580783 OWN - NLM STAT- MEDLINE DCOM- 20090820 LR - 20201209 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 387 IP - 2 DP - 2009 Sep 18 TI - Cellular protein TTRAP interacts with HIV-1 integrase to facilitate viral integration. PG - 256-60 LID - 10.1016/j.bbrc.2009.06.153 [doi] AB - TTRAP is a PML-NB protein that is involved in the NF-kappaB signaling pathway. TTRAP was recently identified by yeast two-hybrid analysis as a HIV-1 integrase (HIV-1 IN) interacting protein. This interaction was verified by co-immunoprecipitation, GST pull-down, and intracellular imaging, and deletion assays suggested that the N-terminal 180 residues of TTRAP are responsible for the interaction. In stable TTRAP knock-down cell lines, the integration of viral vectors decreased significantly compared with non-silenced cell lines. Conversely, overexpression of TTRAP by transient transfection increased the percentage of integration events. This is the first time that TTRAP has been shown to interact with HIV-1 IN and facilitate lentiviral vector integration. These findings reveal a new function of TTRAP and expand our understanding of the cellular response to HIV infection. The interaction between TTRAP and HIV-1 IN may be useful in designing new anti-viral strategies as well as for improving the efficiency of lentiviral-vector-mediated gene delivery. FAU - Zhang, Jian-qi AU - Zhang JQ AD - State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, China. FAU - Wang, Jing-jing AU - Wang JJ FAU - Li, Wen-juan AU - Li WJ FAU - Huang, Lu AU - Huang L FAU - Tian, Ling AU - Tian L FAU - Xue, Jing-lun AU - Xue JL FAU - Chen, Jin-zhong AU - Chen JZ FAU - Jia, William AU - Jia W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090704 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (DNA-Binding Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Transcription Factors) RN - EC 2.7.7.- (HIV Integrase) RN - EC 3.1.4.- (Phosphoric Diester Hydrolases) RN - EC 3.1.4.- (TDP2 protein, human) RN - YY6481J2FF (p31 integrase protein, Human immunodeficiency virus 1) SB - IM MH - Cell Line MH - DNA-Binding Proteins MH - Gene Knockdown Techniques MH - HIV Integrase/*metabolism MH - HIV-1/enzymology/genetics/*physiology MH - Humans MH - Nuclear Proteins/genetics/*metabolism MH - Phosphoric Diester Hydrolases MH - Transcription Factors/genetics/*metabolism MH - *Virus Integration EDAT- 2009/07/08 09:00 MHDA- 2009/08/21 09:00 CRDT- 2009/07/08 09:00 PHST- 2009/06/16 00:00 [received] PHST- 2009/06/26 00:00 [accepted] PHST- 2009/07/08 09:00 [entrez] PHST- 2009/07/08 09:00 [pubmed] PHST- 2009/08/21 09:00 [medline] AID - S0006-291X(09)01309-6 [pii] AID - 10.1016/j.bbrc.2009.06.153 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2009 Sep 18;387(2):256-60. doi: 10.1016/j.bbrc.2009.06.153. Epub 2009 Jul 4.