PMID- 19732142 OWN - NLM STAT- MEDLINE DCOM- 20100201 LR - 20091006 IS - 1574-695X (Electronic) IS - 0928-8244 (Linking) VI - 57 IP - 2 DP - 2009 Nov TI - Cloning, in vitro expression, and bioactivity of interleukin-18 isolated from a domestic porcine breed found in Henan. PG - 129-35 LID - 10.1111/j.1574-695X.2009.00589.x [doi] AB - To evaluate the effects of recombinant porcine interleukin-18 (rpIL-18) on the replication of viruses in host cells and proliferation of lymphocytes, porcine IL-18 (pIL-18) isolated from a domestic big-white porcine breed found in the Henan province (HN) was cloned using a reverse transcriptase-PCR. The cloned HN pIL-18 contained an ORF of 579 base pairs encoding a 192-amino-acid precursor protein. The amino acid sequence of HN pIL-18 was compared with all the other pIL-18 amino acid sequences and varied by at least one amino acid to the consensus of all the others available. HN pIL-18 mature protein gene was inserted into a prokaryotic vector pGEX-4T-1 and expressed in Escherichia coli BL21. The expression of glutathione-S-transferase-pIL18 fusion protein was confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western blot analysis. The rpIL-18 induced in vitro proliferation of concanavalin-A-stimulated porcine splenocytes, as revealed by the MTT assay. We studied the antiviral activities of the rpIL-18 on the replication of porcine reproductive and respiratory syndrome virus (PRRSV), pseudorabies virus (PRV), and porcine parvovirus (PPV) cultured in two homologous cell lines. The results suggested that rpIL-18 can stimulate the proliferation of lymphocytes and inhibit viral pathogens infecting the porcine population. FAU - Chen, Hong-Ying AU - Chen HY AD - Henan Agricultural University, Zhengzhou, China. FAU - Zheng, Lan-Lan AU - Zheng LL FAU - Li, Xin-Sheng AU - Li XS FAU - Wei, Zhan-Yong AU - Wei ZY FAU - Cui, Bao-An AU - Cui BA FAU - Li, Xiao-Kang AU - Li XK FAU - Liu, Jin-Peng AU - Liu JP FAU - Yin, Hong-Zheng AU - Yin HZ FAU - Meng, Jiang-Tao AU - Meng JT FAU - Zhang, Yan AU - Zhang Y FAU - Li, Shi-Min AU - Li SM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090727 PL - England TA - FEMS Immunol Med Microbiol JT - FEMS immunology and medical microbiology JID - 9315554 RN - 0 (Interleukin-18) RN - 0 (Recombinant Proteins) SB - IM MH - Animals MH - Cell Growth Processes/drug effects MH - Cell Line MH - China MH - Cloning, Molecular/methods MH - Cytopathogenic Effect, Viral MH - Escherichia coli/genetics/metabolism MH - Herpesvirus 1, Suid/physiology MH - Interleukin-18/biosynthesis/*genetics/isolation & purification/*pharmacology MH - Lymphocyte Activation/drug effects MH - Lymphocytes/drug effects/immunology MH - Parvovirus, Porcine/physiology MH - Phylogeny MH - Polymerase Chain Reaction MH - Porcine respiratory and reproductive syndrome virus/physiology MH - Recombinant Proteins/biosynthesis/genetics/isolation & purification/pharmacology MH - Sequence Analysis, Protein MH - Swine MH - Virus Replication/drug effects EDAT- 2009/09/08 06:00 MHDA- 2010/02/02 06:00 CRDT- 2009/09/08 06:00 PHST- 2009/09/08 06:00 [entrez] PHST- 2009/09/08 06:00 [pubmed] PHST- 2010/02/02 06:00 [medline] AID - FIM589 [pii] AID - 10.1111/j.1574-695X.2009.00589.x [doi] PST - ppublish SO - FEMS Immunol Med Microbiol. 2009 Nov;57(2):129-35. doi: 10.1111/j.1574-695X.2009.00589.x. Epub 2009 Jul 27.