Publication Date:
2015-04-22
Description:
Multiple sclerosis involves an aberrant autoimmune response and progressive failure of remyelination in the central nervous system. Prevention of neural degeneration and subsequent disability requires remyelination through the generation of new oligodendrocytes, but current treatments exclusively target the immune system. Oligodendrocyte progenitor cells are stem cells in the central nervous system and the principal source of myelinating oligodendrocytes. These cells are abundant in demyelinated regions of patients with multiple sclerosis, yet fail to differentiate, thereby representing a cellular target for pharmacological intervention. To discover therapeutic compounds for enhancing myelination from endogenous oligodendrocyte progenitor cells, we screened a library of bioactive small molecules on mouse pluripotent epiblast stem-cell-derived oligodendrocyte progenitor cells. Here we show seven drugs function at nanomolar doses selectively to enhance the generation of mature oligodendrocytes from progenitor cells in vitro. Two drugs, miconazole and clobetasol, are effective in promoting precocious myelination in organotypic cerebellar slice cultures, and in vivo in early postnatal mouse pups. Systemic delivery of each of the two drugs significantly increases the number of new oligodendrocytes and enhances remyelination in a lysolecithin-induced mouse model of focal demyelination. Administering each of the two drugs at the peak of disease in an experimental autoimmune encephalomyelitis mouse model of chronic progressive multiple sclerosis results in striking reversal of disease severity. Immune response assays show that miconazole functions directly as a remyelinating drug with no effect on the immune system, whereas clobetasol is a potent immunosuppressant as well as a remyelinating agent. Mechanistic studies show that miconazole and clobetasol function in oligodendrocyte progenitor cells through mitogen-activated protein kinase and glucocorticoid receptor signalling, respectively. Furthermore, both drugs enhance the generation of human oligodendrocytes from human oligodendrocyte progenitor cells in vitro. Collectively, our results provide a rationale for testing miconazole and clobetasol, or structurally modified derivatives, to enhance remyelination in patients.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4528969/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4528969/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Najm, Fadi J -- Madhavan, Mayur -- Zaremba, Anita -- Shick, Elizabeth -- Karl, Robert T -- Factor, Daniel C -- Miller, Tyler E -- Nevin, Zachary S -- Kantor, Christopher -- Sargent, Alex -- Quick, Kevin L -- Schlatzer, Daniela M -- Tang, Hong -- Papoian, Ruben -- Brimacombe, Kyle R -- Shen, Min -- Boxer, Matthew B -- Jadhav, Ajit -- Robinson, Andrew P -- Podojil, Joseph R -- Miller, Stephen D -- Miller, Robert H -- Tesar, Paul J -- F30 CA183510/CA/NCI NIH HHS/ -- F30CA183510/CA/NCI NIH HHS/ -- NS026543/NS/NINDS NIH HHS/ -- NS030800/NS/NINDS NIH HHS/ -- NS085246/NS/NINDS NIH HHS/ -- P30 CA043703/CA/NCI NIH HHS/ -- P30CA043703/CA/NCI NIH HHS/ -- R01 NS026543/NS/NINDS NIH HHS/ -- R01 NS030800/NS/NINDS NIH HHS/ -- R21 NS085246/NS/NINDS NIH HHS/ -- T32 GM007250/GM/NIGMS NIH HHS/ -- T32 GM008056/GM/NIGMS NIH HHS/ -- T32GM008056/GM/NIGMS NIH HHS/ -- UL1 TR000439/TR/NCATS NIH HHS/ -- England -- Nature. 2015 Jun 11;522(7555):216-20. doi: 10.1038/nature14335. Epub 2015 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA. ; Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA. ; 1] Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA [2] Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA [3] Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA. ; PerkinElmer, 940 Winter Street, Waltham, Massachusetts 02451, USA. ; Center for Proteomics and Bioinformatics, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA. ; Drug Discovery Center, University of Cincinnati College of Medicine, Cincinnati, Ohio 45237, USA. ; National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, USA. ; Department of Microbiology-Immunology and Interdepartmental Immunobiology Center, Feinberg School of Medicine, Northwestern University, 303 E. Chicago Avenue, Chicago, Illinois 60611, USA. ; 1] Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA [2] Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25896324" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Cell Differentiation/drug effects
;
Cerebellum/drug effects/metabolism/pathology
;
Clobetasol/*pharmacology
;
Demyelinating Diseases/drug therapy/metabolism/pathology
;
Disease Models, Animal
;
Encephalomyelitis, Autoimmune, Experimental/drug therapy/metabolism/pathology
;
Female
;
Germ Layers/drug effects/metabolism/pathology
;
Humans
;
Lysophosphatidylcholines
;
MAP Kinase Signaling System
;
Male
;
Mice
;
Miconazole/*pharmacology
;
Mitogen-Activated Protein Kinases/metabolism
;
Multiple Sclerosis/*drug therapy/*metabolism/pathology
;
Myelin Sheath/*drug effects/*metabolism
;
Oligodendroglia/cytology/drug effects/metabolism
;
Phenotype
;
Pluripotent Stem Cells/cytology/*drug effects/metabolism
;
Receptors, Glucocorticoid/metabolism
;
Regeneration/drug effects
;
Tissue Culture Techniques
Print ISSN:
0028-0836
Electronic ISSN:
1476-4687
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
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