PMID- 25660973 OWN - NLM STAT- MEDLINE DCOM- 20160321 LR - 20150613 IS - 1347-6947 (Electronic) IS - 0916-8451 (Linking) VI - 79 IP - 6 DP - 2015 TI - Knockdown of the host cellular protein transportin 3 attenuates prototype foamy virus infection. PG - 943-51 LID - 10.1080/09168451.2015.1008973 [doi] AB - Transportin 3 (TNPO3) is a member of the importin-ss superfamily proteins. Despite numerous studies, the exact molecular mechanism of TNPO3 in retroviral infection is still controversial. Here, we provide evidence for the role and mechanism of TNPO3 in the replication of prototype foamy virus (PFV). Our findings revealed that PFV infection was reduced 2-fold by knockdown (KD) of TNPO3. However, late stage of viral replication including transcription, translation, viral assembly, and release was not influenced. The differential cellular localization of PFV integrase (IN) in KD cells pinpointed a remarkable reduction of viral replication at the nuclear import step. We also found that TNPO3 interacted with PFV IN but not with Gag, suggesting that IN-TNPO3 interaction is important for nuclear import of PFV pre-integration complex. Our report enlightens the mechanism of PFV interaction with TNPO3 and support ongoing research on PFV as a promising safe vector for gene therapy. FAU - Ali, Md Khadem AU - Ali MK AD - a Department of Systems Biotechnology , Chung Ang University , Ansung , Republic of Korea. FAU - Kim, Jinsun AU - Kim J FAU - Hamid, Faysal Bin AU - Hamid FB FAU - Shin, Cha-Gyun AU - Shin CG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150209 PL - England TA - Biosci Biotechnol Biochem JT - Bioscience, biotechnology, and biochemistry JID - 9205717 RN - 0 (beta Karyopherins) RN - EC 2.7.7.- (Integrases) SB - IM MH - Active Transport, Cell Nucleus MH - Animals MH - Cell Line MH - Cell Nucleus/metabolism MH - Cricetinae MH - *Gene Knockdown Techniques MH - Integrases/metabolism MH - Spumavirus/enzymology/*physiology MH - beta Karyopherins/*deficiency/*genetics OTO - NOTNLM OT - integrase OT - pre-integration complex OT - prototype foamy virus OT - transportin 3 EDAT- 2015/02/11 06:00 MHDA- 2016/03/22 06:00 CRDT- 2015/02/10 06:00 PHST- 2015/02/10 06:00 [entrez] PHST- 2015/02/11 06:00 [pubmed] PHST- 2016/03/22 06:00 [medline] AID - 10.1080/09168451.2015.1008973 [doi] PST - ppublish SO - Biosci Biotechnol Biochem. 2015;79(6):943-51. doi: 10.1080/09168451.2015.1008973. Epub 2015 Feb 9.