Ect2, an Ortholog of Drosophila's Pebble, Negatively Regulates Neurite Outgrowth in Neuroblastoma × Glioma Hybrid NG108-15 Cells

Overview

Journal Cell Mol Neurobiol

Publisher Springer

Specialties Cell Biology
Molecular Biology
Neurology

Date 2011 Feb 26

PMID 21350944

Citations 5

Authors

Takahiro Tsuji

Chiharu Higashida

Yasumasa Yoshida

Mohammad Saharul Islam

Mitsuko Dohmoto

Keita Koizumi

Haruhiro Higashida

Affiliations

Soon will be listed here.

Abstract

To identify genes required for brain development, we previously performed in vivo RNA interference (RNAi) screening in Drosophila embryos. We identified pebble as a gene that disrupts development of the Drosophila nervous system. Although pebble has been shown to be involved in neuronal development of Drosophila in several screens, the involvement of Ect2, a mammalian ortholog of pebble, in mammalian neuronal development has not been addressed. To examine the role of Ect2 in neuronal differentiation, we performed Ect2 RNAi in the mouse neuroblastoma × rat glioma NG108-15 cell line. Depletion of Ect2 resulted in an increased proportion of binucleate cells and morphological differentiation of NG108-15 cells characterized by the outgrowth of neurites. These morphological changes were correlated with an increased level of acetylcholine esterase mRNA. In addition, expression of Ect2 was decreased in differentiated NG108-15 cells induced by dibutyryl cyclic AMP. These findings indicate that Ect2 negatively regulates the differentiation of NG108-15 cells and suggest that Ect2 may play a role in neuronal differentiation and brain development in vivo.

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