N-cadherin and Ng-CAM/8D9 are involved serially in the migration of newly generated neurons into the adult songbird brain

Kaveh Barami, Barry Kirschenbaum, Vance Lemmon, Steven A. Goldman

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

In the adult avian forebrain, neurons continue to be produced in the subependymal zone (SZ), from which they migrate upon radial fibers. To identify ligands regulating this process, we studied N-cadherin and Ng- CAM/8D9 expression in HVC, a neurogenic region of the canary neostriatum. N- cadherin was relatively restricted to the SZ and was expressed by dividing, [3H]thymidine-labeled precursor cells. However, cellular N-cadherin was down-regulated prior to neuronal migration from the SZ. Addition of anti-N- cadherin Fab hastened neuronal migration from adult SZ explants, without influencing neuronal number. Unlike N-cadherin, Ng-CAM/8D9 was expressed by migrating neurons. Anti-8D9 Fab inhibited neuronal migration upon cultured ependymoglia, which did not express Ng-CAM/8D9. Thus, the departure of new neurons from the adult SZ may require their suppression of N-cadherin, whereas their subsequent migration and survival may depend upon neuronal expression of Ng-CAM/8D9 and its interaction with a heterophilic radial cell receptor.

Original languageEnglish
Pages (from-to)567-582
Number of pages16
JournalNeuron
Volume13
Issue number3
DOIs
StatePublished - Oct 4 1994
Externally publishedYes

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Neuron-Glia Cell Adhesion Molecules
Songbirds
Cadherins
Neurons
Brain
Canaries
Neostriatum
Prosencephalon
Thymidine
Ligands

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

N-cadherin and Ng-CAM/8D9 are involved serially in the migration of newly generated neurons into the adult songbird brain. / Barami, Kaveh; Kirschenbaum, Barry; Lemmon, Vance; Goldman, Steven A.

In: Neuron, Vol. 13, No. 3, 04.10.1994, p. 567-582.

Research output: Contribution to journalArticle

Barami, Kaveh ; Kirschenbaum, Barry ; Lemmon, Vance ; Goldman, Steven A. / N-cadherin and Ng-CAM/8D9 are involved serially in the migration of newly generated neurons into the adult songbird brain. In: Neuron. 1994 ; Vol. 13, No. 3. pp. 567-582.
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