PMID- 28853255 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1000-3061 (Print) IS - 1000-3061 (Linking) VI - 33 IP - 8 DP - 2017 Aug 25 TI - [Preparation and identification of polyclonal antibodies specific for nsp4 protein of porcine reproductive and respiratory syndrome virus]. PG - 1276-1283 LID - 10.13345/j.cjb.170117 [doi] AB - To obtain specific antibodies against nsp4 protein of porcine reproductive and respiratory syndrome virus (PRRSV), nsp4 gene was amplified by RT-PCR and cloned into pET-28a(+) vector, designated pET28a-nsp4. pET28a-nsp4 was transformed into Escherichia coli Trasseta (DE3) cells and expressed after induction of IPTG. SDS-PAGE analysis showed that the recombinant protein was expressed in soluble form with the molecular weight of 26 kDa. The soluble fusion protein in the supernatant was purified using Ni+-NTA affinity chromatography. New Zealand rabbits were immunized by the purified nsp4 and anti-sera against nsp4 were obtained. The titer of polyclonal antibodies was about 106 and showed good specificity and sensitivity in the immunofluorescence assay and Western blotting analysis. The polyclonal antibodies also recognized native nsp4 form PRRSV infected Marc-145 cells, providing a useful tool in PRRSV replication mechanism study. FAU - Cai, Xinna AU - Cai X AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Tan, Min AU - Tan M AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Cao, Shengliang AU - Cao S AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Huang, Yan AU - Huang Y AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Sun, Fachao AU - Sun F AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Shang, Yingli AU - Shang Y AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Liu, Sidang AU - Liu S AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. FAU - Xiao, Yihong AU - Xiao Y AD - College of Veterinary Medicine and Animal Sciences, Shandong Agricultural University, Tai'an 271000, Shandong, China. LA - chi PT - Journal Article PL - China TA - Sheng Wu Gong Cheng Xue Bao JT - Sheng wu gong cheng xue bao = Chinese journal of biotechnology JID - 9426463 RN - 0 (Antibodies, Viral) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Viral Nonstructural Proteins) SB - IM MH - Animals MH - Antibodies, Viral/*immunology MH - Blotting, Western MH - Electrophoresis, Polyacrylamide Gel MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Rabbits MH - Recombinant Fusion Proteins/immunology MH - Reverse Transcriptase Polymerase Chain Reaction/veterinary MH - Swine MH - Viral Nonstructural Proteins/*immunology OTO - NOTNLM OT - identification OT - nsp4 OT - polyclonal antibody OT - porcine reproductive and respiratory syndrome virus EDAT- 2017/08/31 06:00 MHDA- 2018/12/12 06:00 CRDT- 2017/08/31 06:00 PHST- 2017/08/31 06:00 [entrez] PHST- 2017/08/31 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] AID - 10.13345/j.cjb.170117 [doi] PST - ppublish SO - Sheng Wu Gong Cheng Xue Bao. 2017 Aug 25;33(8):1276-1283. doi: 10.13345/j.cjb.170117.