Stem cells produce CNS Schwann cells and oligodendrocytes

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Stem cells produce CNS Schwann cells and oligodendrocytes

Postby MSUK » Thu Jul 01, 2010 1:59 am

Stem cells produce Schwann cells as well as oligodendrocytes during repair of CNS demyelination


After central nervous system (CNS) demyelination-such as occurs during multiple sclerosis-there is often spontaneous regeneration of myelin sheaths, mainly by oligodendrocytes but also by Schwann cells.

The origins of the remyelinating cells have not previously been established. We have used Cre-lox fate mapping in transgenic mice to show that PDGFRA/NG2-expressing glia, a distributed population of stem/progenitor cells in the adult CNS, produce the remyelinating oligodendrocytes and almost all of the Schwann cells in chemically induced demyelinated lesions.

In contrast, the great majority of reactive astrocytes in the vicinity of the lesions are derived from preexisting FGFR3-expressing cells, likely to be astrocytes.... Read More - ... ageid/1826
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