Integrins regulate repulsion-mediated dendritic patterning of drosophila sensory neurons by restricting dendrites in a 2D space.
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Integrins regulate repulsion-mediated dendritic patterning of drosophila sensory neurons by restricting dendrites in a 2D space. / Han, Chun; Wang, Denan; Soba, Peter; Zhu, Sijun; Lin, Xinhua; Jan, Lily Yeh; Jan, Yuh-Nung.
In: NEURON, Vol. 73, No. 1, 1, 2012, p. 64-78.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Integrins regulate repulsion-mediated dendritic patterning of drosophila sensory neurons by restricting dendrites in a 2D space.
AU - Han, Chun
AU - Wang, Denan
AU - Soba, Peter
AU - Zhu, Sijun
AU - Lin, Xinhua
AU - Jan, Lily Yeh
AU - Jan, Yuh-Nung
PY - 2012
Y1 - 2012
N2 - Dendrites of the same neuron usually avoid each other. Some neurons also repel similar neurons through dendrite-dendrite interaction to tile the receptive field. Nonoverlapping coverage based on such contact-dependent repulsion requires dendrites to compete for limited space. Here we show that Drosophila class IV dendritic arborization (da) neurons, which tile the larval body wall, grow their dendrites mainly in a 2D space on the extracellular matrix (ECM) secreted by the epidermis. Removing neuronal integrins or blocking epidermal laminin production causes dendrites to grow into the epidermis, suggesting that integrin-laminin interaction attaches dendrites to the ECM. We further show that some of the previously identified tiling mutants fail to confine dendrites in a 2D plane. Expansion of these mutant dendrites in three dimensions results in overlap of dendritic fields. Moreover, overexpression of integrins in these mutant neurons effectively reduces dendritic crossing and restores tiling, revealing an additional mechanism for tiling.
AB - Dendrites of the same neuron usually avoid each other. Some neurons also repel similar neurons through dendrite-dendrite interaction to tile the receptive field. Nonoverlapping coverage based on such contact-dependent repulsion requires dendrites to compete for limited space. Here we show that Drosophila class IV dendritic arborization (da) neurons, which tile the larval body wall, grow their dendrites mainly in a 2D space on the extracellular matrix (ECM) secreted by the epidermis. Removing neuronal integrins or blocking epidermal laminin production causes dendrites to grow into the epidermis, suggesting that integrin-laminin interaction attaches dendrites to the ECM. We further show that some of the previously identified tiling mutants fail to confine dendrites in a 2D plane. Expansion of these mutant dendrites in three dimensions results in overlap of dendritic fields. Moreover, overexpression of integrins in these mutant neurons effectively reduces dendritic crossing and restores tiling, revealing an additional mechanism for tiling.
KW - Animals
KW - Signal Transduction
KW - Microscopy, Electron, Transmission
KW - Cloning, Molecular
KW - Animals, Genetically Modified
KW - Mutation/genetics
KW - RNA Interference
KW - Neuroimaging
KW - Dendrites/physiology/ultrastructure
KW - Drosophila
KW - Drosophila Proteins/genetics
KW - Embryo, Nonmammalian
KW - Extracellular Matrix/physiology
KW - Gene Expression Regulation, Developmental/genetics/physiology
KW - Integrins/genetics/physiology
KW - Laminin/metabolism
KW - Sense Organs/cytology
KW - Sensory Receptor Cells/cytology/metabolism
KW - Animals
KW - Signal Transduction
KW - Microscopy, Electron, Transmission
KW - Cloning, Molecular
KW - Animals, Genetically Modified
KW - Mutation/genetics
KW - RNA Interference
KW - Neuroimaging
KW - Dendrites/physiology/ultrastructure
KW - Drosophila
KW - Drosophila Proteins/genetics
KW - Embryo, Nonmammalian
KW - Extracellular Matrix/physiology
KW - Gene Expression Regulation, Developmental/genetics/physiology
KW - Integrins/genetics/physiology
KW - Laminin/metabolism
KW - Sense Organs/cytology
KW - Sensory Receptor Cells/cytology/metabolism
M3 - SCORING: Journal article
VL - 73
SP - 64
EP - 78
JO - NEURON
JF - NEURON
SN - 0896-6273
IS - 1
M1 - 1
ER -