PMID- 36133808 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220924 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 13 DP - 2022 TI - Thyroid hormone-dependent oligodendroglial cell lineage genomic and non-genomic signaling through integrin receptors. PG - 934971 LID - 10.3389/fphar.2022.934971 [doi] LID - 934971 AB - Multiple sclerosis (MS) is a heterogeneous autoimmune disease whereby the pathological sequelae evolve from oligodendrocytes (OLs) within the central nervous system and are targeted by the immune system, which causes widespread white matter pathology and results in neuronal dysfunction and neurological impairment. The progression of this disease is facilitated by a failure in remyelination following chronic demyelination. One mediator of remyelination is thyroid hormone (TH), whose reliance on monocarboxylate transporter 8 (MCT8) was recently defined. MCT8 facilitates the entry of THs into oligodendrocyte progenitor cell (OPC) and pre-myelinating oligodendrocytes (pre-OLs). Patients with MS may exhibit downregulated MCT8 near inflammatory lesions, which emphasizes an inhibition of TH signaling and subsequent downstream targeted pathways such as phosphoinositide 3-kinase (PI3K)-Akt. However, the role of the closely related mammalian target of rapamycin (mTOR) in pre-OLs during neuroinflammation may also be central to the remyelination process and is governed by various growth promoting signals. Recent research indicates that this may be reliant on TH-dependent signaling through beta1-integrins. This review identifies genomic and non-genomic signaling that is regulated through mTOR in TH-responsive pre-OLs and mature OLs in mouse models of MS. This review critiques data that implicates non-genomic Akt and mTOR signaling in response to TH-dependent integrin receptor activation in pre-OLs. We have also examined whether this can drive remyelination in the context of neuroinflammation and associated sequelae. Importantly, we outline how novel therapeutic small molecules are being designed to target integrin receptors on oligodendroglial lineage cells and whether these are viable therapeutic options for future use in clinical trials for MS. CI - Copyright (c) 2022 Emamnejad, Dass, Mahlis, Bozkurt, Ye, Pagnin, Theotokis, Grigoriadis and Petratos. FAU - Emamnejad, Rahimeh AU - Emamnejad R AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Dass, Mary AU - Dass M AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Mahlis, Michael AU - Mahlis M AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Bozkurt, Salome AU - Bozkurt S AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Ye, Sining AU - Ye S AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Pagnin, Maurice AU - Pagnin M AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. FAU - Theotokis, Paschalis AU - Theotokis P AD - B', Department of Neurology, Laboratory of Experimental Neurology and Neuroimmunology, AHEPA University Hospital, Thessaloniki, Greece. FAU - Grigoriadis, Nikolaos AU - Grigoriadis N AD - B', Department of Neurology, Laboratory of Experimental Neurology and Neuroimmunology, AHEPA University Hospital, Thessaloniki, Greece. FAU - Petratos, Steven AU - Petratos S AD - Department of Neuroscience, Central Clinical School, Monash University, Prahran, VIC, Australia. LA - eng PT - Journal Article PT - Review DEP - 20220905 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 PMC - PMC9483185 OTO - NOTNLM OT - Akt OT - integrin OT - mTOR-mammalian target of rapamycin OT - monocarboxylate transporter 8 (MCT8) OT - oligodendrocyte (OL) OT - thyroid hormone COIS- SP is the founder and Chief Scientific Officer of the start-up company NeuOrphan Pty Ltd. (currently 50% shareholder) that will be commercializing the development of DITPA-like molecules in collaboration with Monash University. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/09/23 06:00 MHDA- 2022/09/23 06:01 PMCR- 2022/09/05 CRDT- 2022/09/22 04:02 PHST- 2022/05/05 00:00 [received] PHST- 2022/07/18 00:00 [accepted] PHST- 2022/09/22 04:02 [entrez] PHST- 2022/09/23 06:00 [pubmed] PHST- 2022/09/23 06:01 [medline] PHST- 2022/09/05 00:00 [pmc-release] AID - 934971 [pii] AID - 10.3389/fphar.2022.934971 [doi] PST - epublish SO - Front Pharmacol. 2022 Sep 5;13:934971. doi: 10.3389/fphar.2022.934971. eCollection 2022.