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Abelson, enabled, and p120catenin exert distinct effects on dendritic morphogenesis in Drosophila
Author(s) -
Li Wenjun,
Li Yan,
Gao FenBiao
Publication year - 2005
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/dvdy.20496
Subject(s) - biology , microbiology and biotechnology , dendritic filopodia , regulator , dendritic spine , morphogenesis , actin cytoskeleton , cytoskeleton , actin , abl , signal transduction , neuroscience , tyrosine kinase , genetics , gene , cell , hippocampal formation
Neurons exhibit diverse dendritic branching patterns that are important for their function. However, the signaling pathways that control the formation of different dendritic structures remain largely unknown. To address this issue in vivo, we use the peripheral nervous system (PNS) of Drosophila as a model system. Through both loss‐of‐function and gain‐of‐function analyses in vivo, we show here that the nonreceptor tyrosine kinase Abelson (Abl), an important regulator of cytoskeleton dynamics, inhibits dendritic branching of dendritic arborization (DA) sensory neurons in Drosophila. Enabled (Ena), a substrate for Abl, promotes the formation of both dendritic branches and actin‐rich spine‐like protrusions of DA neurons, an effect opposite to that of Abl. In contrast, p120catenin (p120ctn) primarily enhances the development of spine‐like protrusions. These results suggest that Ena is a key regulator of dendritic branching and that different regulators of the actin cytoskeleton exert distinct effects on dendritic morphogenesis. Developmental Dynamics 234:512–522, 2005. © 2005 Wiley‐Liss, Inc.