RGD Reference Report - N-cadherin is involved in axon-oligodendrocyte contact and myelination. - Rat Genome Database

RGD Reference Report - N-cadherin is involved in axon-oligodendrocyte contact and myelination. - Rat Genome Database

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N-cadherin is involved in axon-oligodendrocyte contact and myelination.
Authors:	Schnadelbach, O Ozen, I Blaschuk, OW Meyer, RL Fawcett, JW
Citation:	Schnadelbach O, etal., Mol Cell Neurosci. 2001 Jun;17(6):1084-93.
RGD ID:	1626299
Pubmed:	PMID:11414796 (View Abstract at PubMed)
DOI:	DOI:10.1006/mcne.2001.0961 (Journal Full-text)
We have analyzed the influence of the calcium-dependent cell adhesion molecule, N-cadherin, on events leading to CNS myelination. Interactions between axons and oligodendrocyte progenitor (OP) cells and the CG4 OP cell line were examined by video-microscopy. OPs cocultured with dorsal root ganglia explants migrated around the culture and formed numerous contacts with axons. The duration of these contacts depended on the morphology of the OP, with OPs containing four or more processes forming long-lasting contacts and OPs with three or fewer processes forming short-termed contacts. Treatment with N-cadherin function blocking peptides approximately halved the duration of contacts made by cells with four or more processes but contact times for cells with three or less processes were unaffected. The L7 cadherin-blocking antibody and calcium withdrawal had similar effects. Contacts with axons regenerating from explants of adult retina, which do not have N-cadherin on their surface was examined. The contact duration of OPs to adult retina axons was short and similar in length to those formed between OPs and dorsal root ganglion axons in the presence of cadherin blocking reagents. Oligodendrocyte myelination was examined in organotypic rat cerebellar slice cultures, taken before myelination at postnatal day 10 and then allowed to myelinate in vitro over 7 days. When incubated with an N-cadherin function-blocking peptide, myelination of Purkinje cell axons was reduced to about half of control levels, while control peptides were without effect. Cadherin-blockade did not prevent maturation of OPs, since oligodendrocytes showing myelin basic protein immunostaining were still found in these cultures. However, many of the cell processes did not colocalize with calbindin-positive axons. From these data we conclude that N-cadherin is important for the initial contact between a myelinating oligodendrocyte and axons and significantly contributes to the success of myelination.

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Term	Qualifier	Evidence	With	Reference	Notes	Source	Original Reference(s)
calcium-dependent cell-cell adhesion via plasma membrane cell adhesion molecules		IMP		1626299		RGD
regulation of myelination		IMP		1626299		RGD

Objects Annotated

Genes (Rattus norvegicus)

Cdh2 (cadherin 2)

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