PMID- 12674637 OWN - NLM STAT- MEDLINE DCOM- 20030710 LR - 20111117 IS - 1000-3061 (Print) IS - 1000-3061 (Linking) VI - 18 IP - 6 DP - 2002 Nov TI - [Expression of porcine interferon-gamma gene in Pichia pastoris and its effect of inhibiting porcine reproductive and respiratory syndrome virus]. PG - 683-6 AB - In order to develop recombinant porcine Interferon-gamma (rPoIFN-gamma) to prevent porcine viral infection, PoIFN-gamma cDNA lacking the signal peptide was expressed in Pichia pastoris GS115 strain, and the effect of rPoIFN-gamma on porcine reproductive and respiratory syndrome virus (PRRSV) was investigated. The PoIFN-gamma gene was inserted into integrative vector pHIL-S1, and the recombinant GS115 strain (pHIL-S1/PoIFN-gamma) was constructed by homologues recombinant. The rPoIFN-gamma protein was 18 kD with an expressing yield of 18% was assayed by SDS-PAGE and Western blot, respectively. The anti-viral activity of rPoIFN-gamma was in the range of 450-540 u/mL. In addition, the effect of rPoIFN-gamma ant-PRRSV was determined using CPE50 method. The results indicated that high concentration of rPoIFN-gamma could inhibit PRRSV on Marc-145 cell line. The rPoIFN-gamma is a potential drug for prevention and treatment of various kinds of viral pig diseases. FAU - Wan, Jian-Qing AU - Wan JQ AD - College of Veterinary Medicine, Chinese Agricultural University, Beijing 100094, China. FAU - Wu, Wen-Xue AU - Wu WX FAU - Xia, Chun AU - Xia C LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Sheng Wu Gong Cheng Xue Bao JT - Sheng wu gong cheng xue bao = Chinese journal of biotechnology JID - 9426463 RN - 0 (Antiviral Agents) RN - 0 (Recombinant Proteins) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Antiviral Agents/*pharmacology MH - Interferon-gamma/*biosynthesis/*genetics/*pharmacology MH - Pichia/*genetics MH - Porcine respiratory and reproductive syndrome virus/*drug effects MH - Recombinant Proteins MH - Swine EDAT- 2003/04/05 05:00 MHDA- 2003/07/11 05:00 CRDT- 2003/04/05 05:00 PHST- 2003/04/05 05:00 [pubmed] PHST- 2003/07/11 05:00 [medline] PHST- 2003/04/05 05:00 [entrez] PST - ppublish SO - Sheng Wu Gong Cheng Xue Bao. 2002 Nov;18(6):683-6.