PMID- 37510339 OWN - NLM STAT- MEDLINE DCOM- 20230809 LR - 20240501 IS - 2073-4425 (Electronic) IS - 2073-4425 (Linking) VI - 14 IP - 7 DP - 2023 Jul 12 TI - Variations in NSP1 of Porcine Reproductive and Respiratory Syndrome Virus Isolated in China from 1996 to 2022. LID - 10.3390/genes14071435 [doi] LID - 1435 AB - Since its successful isolation in China in 1995, the porcine reproductive and respiratory syndrome virus (PRRSV) has been mutating into highly pathogenic strains by constantly changing pathogenicity and genetic makeup. In this study, we investigated the prevalence and genetic variation of nonstructural protein 1 (NSP1) in PRRSV-2, the main strain prevalent in China. After formulating hypotheses regarding the biology of the NSP1 protein, the nucleotide and amino acid similarity of NSP1 were analyzed and compared in 193 PRRSV-2 strains. The results showed that NSP1 has a stable hydrophobic protein with a molecular weight of 43,060.76 Da. Although NSP1 lacked signal peptides, it could regulate host cell signaling. Furthermore, NSP1 of different strains had high nucleotide (79.6-100%) and amino acid similarity (78.6-100%). In the amino acid sequence comparison of 15 representative strains of PRRSV-2, multiple amino acid substitution sites were found in NSP1. Phylogenetic tree analysis showed that lineages 1 and 8 had different evolutionary branches with long genetic distances. This study lays the foundation for an in-depth understanding of the nature and genetic variation of NSP1 and the development of a safe and effective vaccine in the future. FAU - Zhang, Zhiqing AU - Zhang Z AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. FAU - Zhang, Hang AU - Zhang H AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. FAU - Luo, Qin AU - Luo Q AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. FAU - Zheng, Yajie AU - Zheng Y AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. FAU - Kong, Weili AU - Kong W AUID- ORCID: 0000-0002-9104-7730 AD - Gladstone Institutes of Virology and Immunology, University of California, San Francisco, CA 94158, USA. FAU - Huang, Liangzong AU - Huang L AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. FAU - Zhao, Mengmeng AU - Zhao M AUID- ORCID: 0000-0003-4143-3606 AD - School of Life Science and Engineering, Foshan University, Foshan 528000, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230712 PL - Switzerland TA - Genes (Basel) JT - Genes JID - 101551097 RN - 0 (Nucleotides) RN - 0 (Viral Nonstructural Proteins) RN - 0 (Nsp1a protein, Porcine Reproductive and Respiratory Syndrome Virus) SB - IM MH - Animals MH - Amino Acid Sequence MH - Nucleotides MH - Phylogeny MH - *Porcine Reproductive and Respiratory Syndrome/epidemiology/genetics MH - *Porcine respiratory and reproductive syndrome virus/genetics MH - Swine MH - *Viral Nonstructural Proteins/genetics PMC - PMC10379836 OTO - NOTNLM OT - NSP1 OT - porcine reproductive and respiratory syndrome OT - porcine reproductive and respiratory syndrome virus OT - variations COIS- The authors declare no conflict of interest. EDAT- 2023/07/29 11:49 MHDA- 2023/07/31 11:41 PMCR- 2023/07/12 CRDT- 2023/07/29 01:17 PHST- 2023/06/11 00:00 [received] PHST- 2023/07/03 00:00 [revised] PHST- 2023/07/11 00:00 [accepted] PHST- 2023/07/31 11:41 [medline] PHST- 2023/07/29 11:49 [pubmed] PHST- 2023/07/29 01:17 [entrez] PHST- 2023/07/12 00:00 [pmc-release] AID - genes14071435 [pii] AID - genes-14-01435 [pii] AID - 10.3390/genes14071435 [doi] PST - epublish SO - Genes (Basel). 2023 Jul 12;14(7):1435. doi: 10.3390/genes14071435.