PMID- 21063763 OWN - NLM STAT- MEDLINE DCOM- 20110801 LR - 20211020 IS - 1572-994X (Electronic) IS - 0920-8569 (Linking) VI - 42 IP - 1 DP - 2011 Feb TI - Activation of NF-kappaB by nucleocapsid protein of the porcine reproductive and respiratory syndrome virus. PG - 76-81 LID - 10.1007/s11262-010-0548-6 [doi] AB - Nuclear factor kappa B (NF-kappaB) is a critical transcription factor in innate and adaptive immune response as well as cell proliferation and survival. Previous studies have demonstrated that porcine reproductive and respiratory syndrome virus (PRRSV) infection activated NF-kappaB pathways through IkappaB degradation in MARC-145 cells and alveolar macrophages. To evaluate the mechanisms behind this, we investigated the role of PRRSV structural proteins in the regulation of NF-kappaB. In this study, we screened the structural proteins of PRRSV by NF-kappaB DNA-binding assay and luciferase activity assay and demonstrated that PRRSV nucleocapsid (N) protein could activate NF-kappaB in MARC-145 cells. Furthermore, we revealed that the region between aa 30 and 73 of N protein was essential for its function in the activation of NF-kappaB. These results presented here provide a basis for understanding molecular mechanism of PRRSV infection and inflammation response. FAU - Luo, Rui AU - Luo R AD - State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China. FAU - Fang, Liurong AU - Fang L FAU - Jiang, Yunbo AU - Jiang Y FAU - Jin, Hui AU - Jin H FAU - Wang, Yanwei AU - Wang Y FAU - Wang, Dang AU - Wang D FAU - Chen, Huanchun AU - Chen H FAU - Xiao, Shaobo AU - Xiao S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101110 PL - United States TA - Virus Genes JT - Virus genes JID - 8803967 RN - 0 (NF-kappa B) RN - 0 (Nucleocapsid Proteins) SB - IM MH - Animals MH - Cell Line MH - Gene Expression Regulation MH - NF-kappa B/*metabolism MH - Nucleocapsid Proteins/genetics/*metabolism MH - Porcine respiratory and reproductive syndrome virus/genetics/metabolism/*pathogenicity MH - Swine EDAT- 2010/11/11 06:00 MHDA- 2011/08/02 06:00 CRDT- 2010/11/11 06:00 PHST- 2010/07/14 00:00 [received] PHST- 2010/10/25 00:00 [accepted] PHST- 2010/11/11 06:00 [entrez] PHST- 2010/11/11 06:00 [pubmed] PHST- 2011/08/02 06:00 [medline] AID - 10.1007/s11262-010-0548-6 [doi] PST - ppublish SO - Virus Genes. 2011 Feb;42(1):76-81. doi: 10.1007/s11262-010-0548-6. Epub 2010 Nov 10.