PMID- 29284210 OWN - NLM STAT- MEDLINE DCOM- 20180918 LR - 20181113 IS - 1976-555X (Electronic) IS - 1229-845X (Print) IS - 1229-845X (Linking) VI - 19 IP - 3 DP - 2018 May 31 TI - Genomic characterization and pathogenic study of two porcine reproductive and respiratory syndrome viruses with different virulence in Fujian, China. PG - 339-349 LID - 10.4142/jvs.2018.19.3.339 [doi] AB - Two strains of porcine reproductive and respiratory syndrome virus (PRRSV) were isolated in 2006 and 2016 and designated as FZ06A and FZ16A, respectively. Inoculation experiments showed that FZ06A caused 100% morbidity and 60% mortality, while FZ16A caused 100% morbidity without death. By using genomic sequence and phylogenetic analyses, close relationships between a Chinese highly pathogenic PRRSV strain and the FZ06A and FZ16A strains were observed. Based on the achieved results, multiple genomic variations in Nsp2, a unique N-glycosylation site (N(3)(3)-->K(3)(3)), and a K151 amino acid (AA) substitution for virulence in the GP5 of FZ16A were detected; except the 30 AA deletion in the Nsp2-coding region. Inoculation experiments were conducted and weaker virulence of FZ16A than FZ06A was observed. Based on our results, a 30 AA deletion in the Nsp2-coding region is an unreliable genomic indicator of a high virulence PRRSV strain. The Nsp2 and GP5 differences, in addition to the virulence difference between these two highly pathogenic PRRSV strains, have the potential to be used to establish a basis for further study of PRRSV virulence determinants and to provide data useful in the development of vaccines against this economically devastating disease. FAU - Sui, Xiukun AU - Sui X AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. AD - Molecular and Cellular Biology, Gembloux Agro-Bio Tech University of Liege, 5030 Gembloux, Belgium. FAU - Xin, Ting AU - Xin T AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Guo, Xiaoyu AU - Guo X AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Jia, Hong AU - Jia H AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Li, Ming AU - Li M AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Gao, Xintao AU - Gao X AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Wu, Jing AU - Wu J AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. AD - Molecular and Cellular Biology, Gembloux Agro-Bio Tech University of Liege, 5030 Gembloux, Belgium. FAU - Jiang, Yitong AU - Jiang Y AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Willems, L AU - Willems L AD - Molecular and Cellular Biology, Gembloux Agro-Bio Tech University of Liege, 5030 Gembloux, Belgium. FAU - Zhu, Hongfei AU - Zhu H AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. FAU - Hou, Shaohua AU - Hou S AD - Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China. LA - eng PT - Journal Article PL - Korea (South) TA - J Vet Sci JT - Journal of veterinary science JID - 100964185 SB - IM MH - Animals MH - China MH - *Genome, Viral MH - *Immunity, Humoral MH - Phylogeny MH - Porcine respiratory and reproductive syndrome virus/*genetics/*pathogenicity MH - Sequence Alignment MH - Swine/*immunology MH - Virulence PMC - PMC5974515 OTO - NOTNLM OT - genomics OT - phylogeny OT - porcine respiratory and reproductive syndrome virus OT - virulence COIS- Conflict of Interest: The authors declare no conflicts of interest. EDAT- 2017/12/30 06:00 MHDA- 2018/09/19 06:00 PMCR- 2018/05/01 CRDT- 2017/12/29 06:00 PHST- 2017/08/11 00:00 [received] PHST- 2017/10/25 00:00 [revised] PHST- 2017/12/26 00:00 [accepted] PHST- 2017/12/30 06:00 [pubmed] PHST- 2018/09/19 06:00 [medline] PHST- 2017/12/29 06:00 [entrez] PHST- 2018/05/01 00:00 [pmc-release] AID - jvs.18007 [pii] AID - 10.4142/jvs.2018.19.3.339 [doi] PST - ppublish SO - J Vet Sci. 2018 May 31;19(3):339-349. doi: 10.4142/jvs.2018.19.3.339.