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More MS news articles for June 2004

NB-3/Notch1 Pathway via Deltex1 Promotes Neural Progenitor Cell Differentiation into Oligodendrocytes

J Biol Chem. 2004 Jun 11;279(24):25858-65. Epub 2004 Apr 12
Cui XY, Hu QD, Tekaya M, Shimoda Y, Ang BT, Nie DY, Sun L, Hu WP, Karsak M, Duka T, Takeda Y, Ou LY, Dawe GS, Yu FG, Ahmed S, Jin LH, Schachner M, Watanabe K, Arsenijevic Y, Xiao ZC.
Department of Clinical Research and Group of Stem Cell Research, Singapore General Hospital, Singapore 169608.

Neurons and glia in the vertebrate central nervous system arise in temporally distinct, albeit overlapping, phases.

Neurons are generated first followed by astrocytes and oligodendrocytes from common progenitor cells.

Increasing evidence indicates that axon-derived signals spatiotemporally modulate oligodendrocyte maturation and myelin formation.

Our previous observations demonstrate that F3/contactin is a functional ligand of Notch during oligodendrocyte maturation, revealing the existence of another group of Notch ligands.

Here, we establish that NB-3, a member of the F3/contactin family, acts as a novel Notch ligand to participate in oligodendrocyte generation.

NB-3 triggers nuclear translocation of the Notch intracellular domain and promotes oligodendrogliogenesis from progenitor cells and differentiation of oligodendrocyte precursor cells via Deltex1.

In primary oligodendrocytes, NB-3 increases myelin-associated glycoprotein transcripts.

Thus, the NB-3/Notch signaling pathway may prove to be a molecular handle to treat demyelinating diseases.