PMID- 27840397 OWN - NLM STAT- MEDLINE DCOM- 20170328 LR - 20170328 IS - 1738-8872 (Electronic) IS - 1017-7825 (Linking) VI - 27 IP - 2 DP - 2017 Feb 28 TI - Characterization of Prototype Foamy Virus Infectivity in Transportin 3 Knockdown Human 293t Cell Line. PG - 380-387 LID - 10.4014/jmb.1606.06011 [doi] AB - The foamy viruses are currently considered essential for development as vectors for gene delivery. Previous studies demonstrated that prototype foamy virus (PFV) can infect and replicate prevalently in a variety of cell types for its exclusive replication strategy. However, the virus-host interaction, especially PFV-transportin3 (TNPO3), is still poorly understood. In our investigation of the role of TNPO3 in PFV infection, we found lower virus production in TNPO3 knockdown (KD) cells compared with wild-type 293T cells. PCR analysis revealed that viral DNAs were mostly altered to circular forms: both 1-long terminal repeat (1-LTR) and 2-LTR in TNPO3 KD cells. We therefore suggest that TNPO3 is required for successful PFV replication, at least at/after the nuclear entry step of viral DNA. These findings highlight the obscure mysteries of PFV-host interaction and the requirement of TNPO3 for productive infection of PFV in 293T cells. FAU - Hamid, Faysal Bin AU - Hamid FB AD - Department of Systems Biotechnology, Chung-Ang University, Ansung 17546, Republic of Korea. FAU - Kim, Jinsun AU - Kim J AD - Department of Systems Biotechnology, Chung-Ang University, Ansung 17546, Republic of Korea. FAU - Shin, Cha-Gyun AU - Shin CG AD - Department of Systems Biotechnology, Chung-Ang University, Ansung 17546, Republic of Korea. LA - eng PT - Journal Article PL - Korea (South) TA - J Microbiol Biotechnol JT - Journal of microbiology and biotechnology JID - 9431852 RN - 0 (DNA, Viral) RN - 0 (TNPO3 protein, human) RN - 0 (beta Karyopherins) SB - IM MH - DNA, Viral MH - Gene Knockdown Techniques MH - HEK293 Cells MH - Host-Pathogen Interactions MH - Humans MH - Spumavirus/genetics/*physiology MH - Terminal Repeat Sequences MH - Transfection MH - *Virus Replication MH - beta Karyopherins/genetics/*physiology OTO - NOTNLM OT - 1-long terminal repeat OT - 293 T cell OT - Transportin-3 OT - prototype foamy virus EDAT- 2016/11/15 06:00 MHDA- 2017/03/30 06:00 CRDT- 2016/11/15 06:00 PHST- 2016/11/15 06:00 [pubmed] PHST- 2017/03/30 06:00 [medline] PHST- 2016/11/15 06:00 [entrez] AID - 10.4014/jmb.1606.06011 [pii] AID - 10.4014/jmb.1606.06011 [doi] PST - ppublish SO - J Microbiol Biotechnol. 2017 Feb 28;27(2):380-387. doi: 10.4014/jmb.1606.06011.