PMID- 34142025 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210619 IS - 2589-0042 (Electronic) IS - 2589-0042 (Linking) VI - 24 IP - 6 DP - 2021 Jun 25 TI - Mitochondrial CMPK2 mediates immunomodulatory and antiviral activities through IFN-dependent and IFN-independent pathways. PG - 102498 LID - 10.1016/j.isci.2021.102498 [doi] LID - 102498 AB - Mitochondria regulate the immune response after dengue virus (DENV) infection. Microarray analysis of genes identified the upregulation of mitochondrial cytidine/uridine monophosphate kinase 2 (CMPK2) by DENV infection. We used small interfering RNA-mediated knockdown (KD) and CRISPR-Cas9 knockout (KO) approaches, to investigate the role of CMPK2 in mouse and human cells. The results showed that CMPK2 was critical in DENV-induced antiviral cytokine release and mitochondrial oxidative stress and mitochondrial DNA release to the cytosol. The DENV-induced activation of Toll-like receptor (TLR)-9, inflammasome pathway, and cell migration was suppressed by CMPK2 depletion; however, viral production increased under CMPK2 deficiency. Examining mouse bone marrow-derived dendritic cells from interferon-alpha (IFN-alpha) receptor-KO mice and signal transducer and activator of transcription 1 (STAT1)-KO mice, we confirmed that CMPK2-mediated antiviral activity occurred in IFN-dependent and IFN-independent manners. In sum, CMPK2 is a critical factor in DENV-induced immune responses to determine innate immunity. CI - (c) 2021. FAU - Lai, Jenn-Haung AU - Lai JH AD - Department of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, Lin-Kou, Tao-Yuan, Taiwan, R.O.C. FAU - Wu, De-Wei AU - Wu DW AD - Department of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, Lin-Kou, Tao-Yuan, Taiwan, R.O.C. FAU - Wu, Chien-Hsiang AU - Wu CH AD - Department of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, Lin-Kou, Tao-Yuan, Taiwan, R.O.C. FAU - Hung, Li-Feng AU - Hung LF AD - Institute of Cellular and System Medicine, National Health Research Institute, Zhunan, Taiwan, R.O.C. FAU - Huang, Chuan-Yueh AU - Huang CY AD - Institute of Cellular and System Medicine, National Health Research Institute, Zhunan, Taiwan, R.O.C. FAU - Ka, Shuk-Man AU - Ka SM AD - Graduate Institute of Aerospace and Undersea Medicine, Department of Medicine, National Defense Medical Center, Taipei, Taiwan, ROC. FAU - Chen, Ann AU - Chen A AD - Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan. FAU - Chang, Zee-Fen AU - Chang ZF AD - Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei 10002, Taiwan. FAU - Ho, Ling-Jun AU - Ho LJ AD - Institute of Cellular and System Medicine, National Health Research Institute, Zhunan, Taiwan, R.O.C. LA - eng PT - Journal Article DEP - 20210503 PL - United States TA - iScience JT - iScience JID - 101724038 PMC - PMC8188380 OTO - NOTNLM OT - Immunology OT - Molecular biology OT - Virology COIS- The authors confirm that there are no conflicts of interest. EDAT- 2021/06/19 06:00 MHDA- 2021/06/19 06:01 PMCR- 2021/05/03 CRDT- 2021/06/18 06:52 PHST- 2020/12/07 00:00 [received] PHST- 2021/03/31 00:00 [revised] PHST- 2021/04/28 00:00 [accepted] PHST- 2021/06/18 06:52 [entrez] PHST- 2021/06/19 06:00 [pubmed] PHST- 2021/06/19 06:01 [medline] PHST- 2021/05/03 00:00 [pmc-release] AID - S2589-0042(21)00466-1 [pii] AID - 102498 [pii] AID - 10.1016/j.isci.2021.102498 [doi] PST - epublish SO - iScience. 2021 May 3;24(6):102498. doi: 10.1016/j.isci.2021.102498. eCollection 2021 Jun 25.