Reelin signals through apolipoprotein E receptor 2 and Cdc42 to increase growth cone motility and filopodia formation.
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Reelin signals through apolipoprotein E receptor 2 and Cdc42 to increase growth cone motility and filopodia formation. / Leemhuis, Jost; Bouché, Elisabeth; Frotscher, Michael; Henle, Frank; Hein, Lutz; Herz, Joachim; Meyer, Dieter K; Pichler, Marina; Roth, Günter; Schwan, Carsten; Bock, Hans H.
in: J NEUROSCI, Jahrgang 30, Nr. 44, 44, 2010, S. 14759-14772.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Reelin signals through apolipoprotein E receptor 2 and Cdc42 to increase growth cone motility and filopodia formation.
AU - Leemhuis, Jost
AU - Bouché, Elisabeth
AU - Frotscher, Michael
AU - Henle, Frank
AU - Hein, Lutz
AU - Herz, Joachim
AU - Meyer, Dieter K
AU - Pichler, Marina
AU - Roth, Günter
AU - Schwan, Carsten
AU - Bock, Hans H
PY - 2010
Y1 - 2010
N2 - Lipoprotein receptor signaling regulates the positioning and differentiation of postmitotic neurons during development and modulates neuronal plasticity in the mature brain. Depending on the contextual situation, the lipoprotein receptor ligand Reelin can have opposing effects on cortical neurons. We show that Reelin increases growth cone motility and filopodia formation, and identify the underlying signaling cascade. Reelin activates the Rho GTPase Cdc42, known for its role in neuronal morphogenesis and directed migration, in an apolipoprotein E receptor 2-, Disabled-1-, and phosphatidylinositol 3-kinase-dependent manner. We demonstrate that neuronal vesicle trafficking, a Cdc42-controlled process, is increased after Reelin treatment and further provide evidence that the peptidergic VIP/PACAP38 system and Reelin can functionally interact to promote axonal branching. In conclusion, Reelin-induced activation of Cdc42 contributes to the regulation of the cytoskeleton of individual responsive neurons and converges with other signaling cascades to orchestrate Rho GTPase activity and promote neuronal development. Our data link the observation that defects in Rho GTPases and Reelin signaling are responsible for developmental defects leading to neurological and psychiatric disorders.
AB - Lipoprotein receptor signaling regulates the positioning and differentiation of postmitotic neurons during development and modulates neuronal plasticity in the mature brain. Depending on the contextual situation, the lipoprotein receptor ligand Reelin can have opposing effects on cortical neurons. We show that Reelin increases growth cone motility and filopodia formation, and identify the underlying signaling cascade. Reelin activates the Rho GTPase Cdc42, known for its role in neuronal morphogenesis and directed migration, in an apolipoprotein E receptor 2-, Disabled-1-, and phosphatidylinositol 3-kinase-dependent manner. We demonstrate that neuronal vesicle trafficking, a Cdc42-controlled process, is increased after Reelin treatment and further provide evidence that the peptidergic VIP/PACAP38 system and Reelin can functionally interact to promote axonal branching. In conclusion, Reelin-induced activation of Cdc42 contributes to the regulation of the cytoskeleton of individual responsive neurons and converges with other signaling cascades to orchestrate Rho GTPase activity and promote neuronal development. Our data link the observation that defects in Rho GTPases and Reelin signaling are responsible for developmental defects leading to neurological and psychiatric disorders.
KW - Animals
KW - Humans
KW - Cells, Cultured
KW - Mice
KW - Mice, Knockout
KW - Rats
KW - Signal Transduction genetics
KW - Animals, Newborn
KW - Organ Culture Techniques
KW - Cell Movement genetics
KW - Cell Adhesion Molecules, Neuronal genetics
KW - Cerebral Cortex embryology
KW - Extracellular Matrix Proteins genetics
KW - Growth Cones metabolism
KW - HEK293 Cells
KW - Nerve Tissue Proteins genetics
KW - Phosphatidylinositol 3-Kinases genetics
KW - Pseudopodia genetics
KW - Receptors, Lipoprotein genetics
KW - Serine Endopeptidases genetics
KW - cdc42 GTP-Binding Protein genetics
KW - Animals
KW - Humans
KW - Cells, Cultured
KW - Mice
KW - Mice, Knockout
KW - Rats
KW - Signal Transduction genetics
KW - Animals, Newborn
KW - Organ Culture Techniques
KW - Cell Movement genetics
KW - Cell Adhesion Molecules, Neuronal genetics
KW - Cerebral Cortex embryology
KW - Extracellular Matrix Proteins genetics
KW - Growth Cones metabolism
KW - HEK293 Cells
KW - Nerve Tissue Proteins genetics
KW - Phosphatidylinositol 3-Kinases genetics
KW - Pseudopodia genetics
KW - Receptors, Lipoprotein genetics
KW - Serine Endopeptidases genetics
KW - cdc42 GTP-Binding Protein genetics
M3 - SCORING: Zeitschriftenaufsatz
VL - 30
SP - 14759
EP - 14772
JO - J NEUROSCI
JF - J NEUROSCI
SN - 0270-6474
IS - 44
M1 - 44
ER -