Journal
SCIENCE ADVANCES
Volume 6, Issue 49, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abc6983
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Funding
- Progressive MS Alliance [PMSA] [PA-1604-08492]
- INSERM
- ICM
- German Research Foundation [DFG CRC-TR-128B07]
- Italian Multiple Sclerosis Foundation (FISM) Neural Stem Cells in MS
- Fondation pour l'aide a la recherche sur la Sclerose en Plaques (ARSEP)
- University of Connecticut from National Multiple Sclerosis Society [RG-1612-26501]
- European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS)
- PMSA [PA-1604-08492]
- National MS Society [RG-1801-30020, NMSS RG-1801-30020]
- French Ministry of Research (ED BioSPC)
- `Institut des Neurosciences Translationnelles' Fondation Leducq [ANR-10-IAIHU-06]
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Remyelination failure in multiple sclerosis (MS) is associated with a migration/differentiation block of oligodendroglia. The reason for this block is highly debated. It could result from disease-related extrinsic or intrinsic regulators in oligodendroglial biology. To avoid confounding immune-mediated extrinsic effect, we used an immune-deficient mouse model to compare induced pluripotent stem cell-derived oligodendroglia from MS and healthy donors following engraftment in the developing CNS. We show that the MS-progeny behaves and differentiates into oligodendrocytes to the same extent as controls. They generate equal amounts of myelin, with bona fide nodes of Ranvier, and promote equal restoration of their host slow conduction. MS-progeny expressed oligodendrocyte- and astrocyte-specific connexins and established functional connections with donor and host glia. Thus, MS oligodendroglia, regardless of major immune manipulators, are intrinsically capable of myelination and making functional axo-glia/glia-glia connections, reinforcing the view that the MS oligodendrocyte differentiation block is not from major intrinsic oligodendroglial deficits.
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