PMID- 36182074 OWN - NLM STAT- MEDLINE DCOM- 20230301 LR - 20230314 IS - 1995-820X (Electronic) IS - 1674-0769 (Print) IS - 1995-820X (Linking) VI - 38 IP - 1 DP - 2023 Feb TI - Zika virus non-structural protein 4B interacts with DHCR7 to facilitate viral infection. PG - 23-33 LID - S1995-820X(22)00157-2 [pii] LID - 10.1016/j.virs.2022.09.009 [doi] AB - Zika virus (ZIKV) evolves non-structural proteins to evade immune response and ensure efficient replication in the host cells. Cholesterol metabolic enzyme 7-dehydrocholesterol reductase (DHCR7) was recently reported to impact innate immune responses in ZIKV infection. However, the vital non-structural protein and mechanisms involved in DHCR7-mediated viral evasion are not well elucidated. In this study, we demonstrated that ZIKV infection facilitated DHCR7 expression. Notably, the upregulated DHCR7 in turn facilitated ZIKV infection and blocking DHCR7 suppressed ZIKV infection. Mechanically, ZIKV non-structural protein 4B (NS4B) interacted with DHCR7 to induce DHCR7 expression. Moreover, DHCR7 inhibited TANK-binding kinase 1 (TBK1) and interferon regulatory factor 3 (IRF3) phosphorylation, which resulted in the reduction of interferon-beta (IFN-beta) and interferon-stimulated genes (ISGs) productions. Therefore, we propose that ZIKV NS4B binds to DHCR7 to repress TBK1 and IRF3 activation, which in turn inhibits IFN-beta and ISGs, and thereby facilitating ZIKV evasion. This study broadens the insights on how viral non-structural proteins antagonize innate immunity to facilitate viral infection via cholesterol metabolic enzymes and intermediates. CI - Copyright (c) 2022 The Authors. Publishing services by Elsevier B.V. All rights reserved. FAU - Chen, Weijie AU - Chen W AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. FAU - Li, Yukun AU - Li Y AD - Halison International Peace Hospital, Hebei Medical University, Hengshui, 053000, China. FAU - Yu, Xiuling AU - Yu X AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China. FAU - Wang, Zhenwei AU - Wang Z AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China. FAU - Wang, Wenbiao AU - Wang W AD - Medical Research Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China. FAU - Rao, Menglan AU - Rao M AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China. FAU - Li, Yongkui AU - Li Y AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. FAU - Luo, Zhen AU - Luo Z AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. FAU - Zhang, Qiwei AU - Zhang Q AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. FAU - Liu, Jinbiao AU - Liu J AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. Electronic address: jinbiaoliu@jnu.edu.cn. FAU - Wu, Jianguo AU - Wu J AD - Guangdong Provincial Key Laboratory of Virology, Institute of Medical Microbiology, Jinan University, Guangzhou, 510632, China; Foshan Institute of Medical Microbiology, Foshan, 528315, China. Electronic address: jwu898@jnu.edu.cn. LA - eng PT - Journal Article DEP - 20220929 PL - Netherlands TA - Virol Sin JT - Virologica Sinica JID - 101514185 RN - 0 (Viral Nonstructural Proteins) RN - 77238-31-4 (Interferon-beta) RN - 97C5T2UQ7J (Cholesterol) SB - IM MH - Humans MH - *Zika Virus MH - *Zika Virus Infection MH - Signal Transduction MH - Viral Nonstructural Proteins/metabolism MH - Interferon-beta/genetics/metabolism MH - Immunity, Innate MH - Cholesterol MH - Virus Replication PMC - PMC10006206 OTO - NOTNLM OT - 7-Dehydrocholesterol reductase (DHCR7) OT - Interferon regulatory factor 3 (IRF3) OT - Interferon-beta (IFN-beta) OT - Non-structural protein 4B (NS4B) OT - TANK-Binding kinase 1 (TBK1) OT - Zika virus (ZIKV) EDAT- 2022/10/02 06:00 MHDA- 2023/03/03 06:00 PMCR- 2022/09/29 CRDT- 2022/10/01 19:38 PHST- 2022/05/08 00:00 [received] PHST- 2022/09/26 00:00 [accepted] PHST- 2022/10/02 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2022/10/01 19:38 [entrez] PHST- 2022/09/29 00:00 [pmc-release] AID - S1995-820X(22)00157-2 [pii] AID - 10.1016/j.virs.2022.09.009 [doi] PST - ppublish SO - Virol Sin. 2023 Feb;38(1):23-33. doi: 10.1016/j.virs.2022.09.009. Epub 2022 Sep 29.