PMID- 36232593 OWN - NLM STAT- MEDLINE DCOM- 20221017 LR - 20221019 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 19 DP - 2022 Sep 25 TI - Targeting Signaling Pathway Downstream of RIG-I/MAVS in the CNS Stimulates Production of Endogenous Type I IFN and Suppresses EAE. LID - 10.3390/ijms231911292 [doi] LID - 11292 AB - Type I interferons (IFN), including IFNbeta, play a protective role in multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE). Type I IFNs are induced by the stimulation of innate signaling, including via cytoplasmic RIG-I-like receptors. In the present study, we investigated the potential effect of a chimeric protein containing the key domain of RIG-I signaling in the production of CNS endogenous IFNbeta and asked whether this would exert a therapeutic effect against EAE. We intrathecally administered an adeno-associated virus vector (AAV) encoding a fusion protein comprising RIG-I 2CARD domains (C) and the first 200 amino acids of mitochondrial antiviral-signaling protein (MAVS) (M) (AAV-CM). In vivo imaging in IFNbeta/luciferase reporter mice revealed that a single intrathecal injection of AAV-CM resulted in dose-dependent and sustained IFNbeta expression within the CNS. IFNbeta expression was significantly increased for 7 days. Immunofluorescent staining in IFNbeta-YFP reporter mice revealed extraparenchymal CD45+ cells, choroid plexus, and astrocytes as sources of IFNbeta. Moreover, intrathecal administration of AAV-CM at the onset of EAE induced the suppression of EAE, which was IFN-I-dependent. These findings suggest that accessing the signaling pathway downstream of RIG-I represents a promising therapeutic strategy for inflammatory CNS diseases, such as MS. FAU - Kronborg Hansen, Anne K AU - Kronborg Hansen AK AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Dubik, Magdalena AU - Dubik M AUID- ORCID: 0000-0002-4521-0410 AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Marczynska, Joanna AU - Marczynska J AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Ojha, Bhavya AU - Ojha B AUID- ORCID: 0000-0003-4919-6836 AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Nistal-Villan, Estanislao AU - Nistal-Villan E AUID- ORCID: 0000-0003-2458-8833 AD - Microbiology Section, Department of Pharmaceutical and Health Science, Faculty of Pharmacy, University CEU San Pablo, Campus Monteprincipe, 28003 Madrid, Spain. FAU - Gonzalez Aseguinolaza, Gloria AU - Gonzalez Aseguinolaza G AUID- ORCID: 0000-0002-1600-4562 AD - Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, 31008 Pamplona, Spain. AD - IdiSNA Navarra Institute for Health Research, 31008 Pamplona, Spain. FAU - Arengoth, Dina S AU - Arengoth DS AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Owens, Trevor AU - Owens T AUID- ORCID: 0000-0001-9315-6036 AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. FAU - Khorooshi, Reza AU - Khorooshi R AD - Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5000 Odense, Denmark. LA - eng GR - (DFF, 4183-00198A and 8020- 00157B)/Independent Research Fund Denmark/ GR - the Danish Multiple Sclerosis Society/the Danish Multiple Sclerosis Society/ GR - Lundbeckfonden/Lundbeckfonden/ GR - (ECTRIMS)/The European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) Postdoctoral Research Fellowship Programme/ GR - A.P. Moller Fonden/A.P. Moller Fonden/ GR - Direktor Ejnar Jonasson kaldet Johnsen og hustrus mindelegat/Direktor Ejnar Jonasson kaldet Johnsen og hustrus mindelegat/ GR - EU.MSCA ITN PMSMatTrain/EU.MSCA ITN PMSMatTrain/ PT - Journal Article DEP - 20220925 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Amino Acids) RN - 0 (Antiviral Agents) RN - 0 (Interferon Type I) RN - 0 (Recombinant Fusion Proteins) RN - 77238-31-4 (Interferon-beta) SB - IM MH - Amino Acids MH - Animals MH - Antiviral Agents MH - *Encephalomyelitis, Autoimmune, Experimental/drug therapy MH - *Interferon Type I/metabolism MH - Interferon-beta/genetics/metabolism MH - Mice MH - Recombinant Fusion Proteins MH - Signal Transduction PMC - PMC9570082 OTO - NOTNLM OT - 2CARD-MAVS200 OT - MAVS OT - RIG-I OT - experimental autoimmune encephalomyelitis OT - type I interferon COIS- The authors declare that they have no competing interest. EDAT- 2022/10/15 06:00 MHDA- 2022/10/18 06:00 PMCR- 2022/09/25 CRDT- 2022/10/14 02:08 PHST- 2022/08/25 00:00 [received] PHST- 2022/09/19 00:00 [revised] PHST- 2022/09/22 00:00 [accepted] PHST- 2022/10/14 02:08 [entrez] PHST- 2022/10/15 06:00 [pubmed] PHST- 2022/10/18 06:00 [medline] PHST- 2022/09/25 00:00 [pmc-release] AID - ijms231911292 [pii] AID - ijms-23-11292 [pii] AID - 10.3390/ijms231911292 [doi] PST - epublish SO - Int J Mol Sci. 2022 Sep 25;23(19):11292. doi: 10.3390/ijms231911292.