PMID- 34836987 OWN - NLM STAT- MEDLINE DCOM- 20220131 LR - 20220131 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 11 IP - 1 DP - 2021 Nov 26 TI - Subcellular localization of nucleocapsid protein of SFTSV and its assembly into the ribonucleoprotein complex with L protein and viral RNA. PG - 22977 LID - 10.1038/s41598-021-01985-x [doi] LID - 22977 AB - Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging bunyavirus that causes novel zoonotic diseases in Asian countries including China, Japan, South Korea, and Vietnam. In phleboviruses, viral proteins play a critical role in viral particle formation inside the host cells. Viral glycoproteins (GPs) and RNA-dependent RNA polymerase (RdRp) are colocalized in the Golgi apparatus and endoplasmic reticulum-Golgi intermediate compartment (ERGIC). The nucleocapsid (N) protein was widely expressed in the cytoplasm, even in cells coexpressing GP. However, the role of SFTSV N protein remains unclear. The subcellular localization of SFTSV structural proteins was investigated using a confocal microscope. Subsequently, minigenome and immunoprecipitation assays were carried out. The N protein interacts with viral RNA (vRNA) and further shows translational activity with RdRp which is L protein and localized in the ERGIC and Golgi apparatus when co-expressed with GP. On the other hand, mutant N protein did not interact with vRNA either localized in the ERGIC or Golgi apparatus. The interaction between the N protein of SFTSV and vRNA is important for the localization of viral proteins and viral assembly. This study provides useful insights into the life cycle of SFTSV, which will lead to the detection of antiviral targets. CI - (c) 2021. The Author(s). FAU - Lokupathirage, Sithumini M W AU - Lokupathirage SMW AD - Graduate School of Infectious Diseases, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Tsuda, Yoshimi AU - Tsuda Y AD - Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. AD - Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Ikegame, Kodai AU - Ikegame K AD - Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Noda, Kisho AU - Noda K AD - School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Muthusinghe, Devinda S AU - Muthusinghe DS AD - Graduate School of Infectious Diseases, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Kozawa, Fumiya AU - Kozawa F AD - School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Manzoor, Rashid AU - Manzoor R AD - International Institute for Zoonosis Control, Hokkaido University, Sapporo, 001-0020, Japan. FAU - Shimizu, Kenta AU - Shimizu K AD - Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. AD - Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan. FAU - Yoshimatsu, Kumiko AU - Yoshimatsu K AD - Graduate School of Infectious Diseases, Hokkaido University, Sapporo, 060-8638, Japan. yosimatu@igm.hokudai.ac.jp. AD - Institute for Genetic Medicine, Hokkaido University, Sapporo, 060-0815, Japan. yosimatu@igm.hokudai.ac.jp. LA - eng GR - JP20jm0110019/Science and Technology Research Partnership for Sustainable Development/ GR - 21fk0108081h1303/Japan Agency for Medical Research and Development,/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211126 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Nucleocapsid Proteins) RN - 0 (RNA, Viral) RN - 0 (Ribonucleoproteins) RN - 0 (Viral Envelope Proteins) RN - EC 2.7.7.48 (RNA-Dependent RNA Polymerase) SB - IM MH - Animals MH - Chlorocebus aethiops MH - Endoplasmic Reticulum/*metabolism MH - Golgi Apparatus/*metabolism MH - HEK293 Cells MH - Humans MH - Nucleocapsid Proteins/genetics/*metabolism MH - RNA, Viral/*metabolism MH - RNA-Dependent RNA Polymerase/genetics/*metabolism MH - Ribonucleoproteins/genetics/*metabolism MH - Severe Fever with Thrombocytopenia Syndrome/*metabolism MH - Vero Cells MH - Viral Envelope Proteins/genetics/*metabolism PMC - PMC8626419 COIS- The authors declare no competing interests. EDAT- 2021/11/28 06:00 MHDA- 2022/02/01 06:00 PMCR- 2021/11/26 CRDT- 2021/11/27 05:45 PHST- 2021/02/02 00:00 [received] PHST- 2021/10/29 00:00 [accepted] PHST- 2021/11/27 05:45 [entrez] PHST- 2021/11/28 06:00 [pubmed] PHST- 2022/02/01 06:00 [medline] PHST- 2021/11/26 00:00 [pmc-release] AID - 10.1038/s41598-021-01985-x [pii] AID - 1985 [pii] AID - 10.1038/s41598-021-01985-x [doi] PST - epublish SO - Sci Rep. 2021 Nov 26;11(1):22977. doi: 10.1038/s41598-021-01985-x.