PMID- 14614267 OWN - NLM STAT- MEDLINE DCOM- 20031204 LR - 20130131 IS - 1229-845X (Print) IS - 1229-845X (Linking) VI - 3 IP - 1 DP - 2002 Mar TI - Expression of open reading frame 5 protein of porcine reproductive and respiratory syndrome virus using semliki forest virus expression system. PG - 13-8 AB - The ORF5 gene encodes a major envelope glycoprotein (GP5), which is one of the three major proteins of porcine reproductive and respiratory syndrome virus (PRRSV). The GP5 protein has been known to be a 24.5-26 kDa N-glycosylated envelope protein. The GP5 is involved in inducing neutralizing antibodies. For this reason, the GP5 is primary candidate for the PRRSV subunit vaccine. To produce the native form of GP5 in mammalian cells, we have cloned the ORF5 gene from PRRSV CNV-1 into the Semliki Forest virus (SFV)-based expression vector, resulting in recombinant pSFV-ORF5. By the infection with recombinant pSFV-ORF5 to BHK-21 cells, the GP5 expression was confirmed by immunocytochemistry and immunoblotting assay. The recombinant virus particle harboring ORF5 gene was infectious to BHK-21 and MARC-145. The RNA synthesis and expression of GP5 in the infected cell was also confirmed by RT-PCR. FAU - Jung, Hae-Sun AU - Jung HS AD - College of Veterinary Medicine, Chungnam National University, Daejeon, 305-764, Korea. FAU - Hwang, In-Wook AU - Hwang IW FAU - Kim, Su-Mi AU - Kim SM FAU - Kim, Chul-Joong AU - Kim CJ FAU - Shin, Kwang-Soon AU - Shin KS FAU - Kim, Hyun-Soo AU - Kim HS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Korea (South) TA - J Vet Sci JT - Journal of veterinary science JID - 100964185 RN - 0 (DNA Primers) RN - 0 (Viral Envelope Proteins) RN - 0 (Viral Proteins) RN - 0 (glycoprotein 5, PRRSV) SB - IM MH - Animals MH - Base Sequence MH - DNA Primers MH - *Genes, Viral MH - Plasmids/genetics MH - Porcine respiratory and reproductive syndrome virus/*genetics MH - Restriction Mapping MH - Reverse Transcriptase Polymerase Chain Reaction MH - Semliki forest virus/*genetics MH - Swine MH - Viral Envelope Proteins/genetics MH - Viral Proteins/*genetics MH - Virology/methods EDAT- 2003/11/14 05:00 MHDA- 2003/12/05 05:00 CRDT- 2003/11/14 05:00 PHST- 2003/11/14 05:00 [pubmed] PHST- 2003/12/05 05:00 [medline] PHST- 2003/11/14 05:00 [entrez] AID - 200203013 [pii] PST - ppublish SO - J Vet Sci. 2002 Mar;3(1):13-8.