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Title: Emerging therapeutic targets for neuromyelitis optica spectrum disorder
Authors: Lukmanee Tradtrantip
Nithi Asavapanumas
Alan S. Verkman
University of California, San Francisco
Faculty of Medicine, Ramathibodi Hospital, Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Pharmacology, Toxicology and Pharmaceutics
Issue Date: 3-Mar-2020
Citation: Expert Opinion on Therapeutic Targets. Vol.24, No.3 (2020), 219-229
Abstract: © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group. Introduction: Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory demyelinating disease of the central nervous system affecting primarily the spinal cord and optic nerves. Most NMOSD patients are seropositive for immunoglobulin G autoantibodies against astrocyte water channel aquaporin-4, called AQP4-IgG, which cause astrocyte injury leading to demyelination and neurological impairment. Current therapy for AQP4-IgG seropositive NMOSD includes immunosuppression, B cell depletion, and plasma exchange. Newer therapies target complement, CD19 and IL-6 receptors. Areas covered: This review covers early-stage pre-clinical therapeutic approaches for seropositive NMOSD. Targets include pathogenic AQP4-IgG autoantibodies and their binding to AQP4, complement-dependent and cell-mediated cytotoxicity, blood-brain barrier, remyelination and immune effector and regulatory cells, with treatment modalities including small molecules, biologics, and cells. Expert opinion: Though newer NMOSD therapies appear to have increased efficacy in reducing relapse rate and neurological deficit, increasingly targeted therapies could benefit NMOSD patients with ongoing relapses and could potentially be superior in efficacy and safety. Of the various early-stage therapeutic approaches, IgG inactivating enzymes, aquaporumab blocking antibodies, drugs targeting early components of the classical complement system, complement regulator-targeted drugs, and Fc-based multimers are of interest. Curative strategies, perhaps involving AQP4 tolerization, remain intriguing future possibilities.
ISSN: 17447631
Appears in Collections:Scopus 2020

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