GRM7 regulates embryonic neurogenesis via CREB and YAP.

Abstract

Metabotropic glutamate receptor 7 (GRM7) has recently been identified to be associated with brain developmental defects, such as attention deficit hyperactivity disorder (ADHD) and autism. However, the function of GRM7 during brain development remains largely unknown. Here, we used gain- and loss-of-function strategies to investigate the role of GRM7 in early cortical development. We demonstrate that Grm7 knockdown increases neural progenitor cell (NPC) proliferation, decreases terminal mitosis and neuronal differentiation, and leads to abnormal neuronal morphology. GRM7 regulates the phosphorylation of cyclic AMP response element-binding protein (CREB) and the expression of Yes-associated protein (YAP) by directly interacting with CaM, which subsequently regulates the expression of CyclinD1 and ultimately affects early cortical development. These defects in neurogenesis are ameliorated by Grm7 overexpression, Creb knockdown, or Yap knockdown. Thus, our findings indicate that GRM7 signaling via CREB and YAP is necessary for neurogenesis in the brain.

• Authors: Wenlong Xia, YanLi Liu, Jianwei Jiao
• Journal: Stem cell reports (Stem Cell Reports) Vol. 4 Issue 5 Pg. 795-810 (May 12 2015) ISSN: 2213-6711 [Electronic] United States
• PMID: 25921811 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

Chemical References

• Adaptor Proteins, Signal Transducing
• Cell Cycle Proteins
• Cyclic AMP Response Element-Binding Protein
• Phosphoproteins
• RNA, Small Interfering
• Receptors, Metabotropic Glutamate
• YAP-Signaling Proteins
• Yap1 protein, mouse
• metabotropic glutamate receptor 7

Topics

• Adaptor Proteins, Signal Transducing (antagonists & inhibitors, genetics, metabolism)
• Animals
• Cell Cycle Proteins
• Cell Proliferation
• Cells, Cultured
• Cyclic AMP Response Element-Binding Protein (metabolism)
• Female
• Immunoprecipitation
• Mice
• Mice, Inbred ICR
• Microscopy, Confocal
• Mitosis
• Neural Stem Cells (cytology, metabolism)
• Neurogenesis
• Phosphoproteins (antagonists & inhibitors, genetics, metabolism)
• Phosphorylation
• RNA Interference
• RNA, Small Interfering (metabolism)
• Receptors, Metabotropic Glutamate (antagonists & inhibitors, genetics, metabolism)
• Signal Transduction
• YAP-Signaling Proteins