ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2005
The scaffold protein Homer1b/c links metabotropic glutamate receptor 5 to extracellular signal-regulated protein kinase cascades in neurons.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers, 1 of them a synthesis that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
133 citing papers in PubMed, 1 synthesis or guideline pooled it, 243 citations in OpenAlex.
- Rational and Translational Implications of D-Amino Acids for Treatment-Resistant Schizophrenia: From Neurobiology to the Clinics.Biomolecules · 2022Pooled it
- ATF4 Modulates Group 1 mGluR-Dependent molecular signaling, hippocampal plasticity and behavior.Molecular psychiatry · 2026Article
- Astrocytic mGluR5 Regulation of Synaptic Transmission is Activity-Dependent in Adult Rats.Glia · 2026Article
- Glutamatergic Neurotransmission Disruption as a Pathomechanism of Brain Damage in Disorders of Amino Acid and Organic Acid Metabolism: Insights from Animal and Cellular Studies.Neurochemical research · 2026Review
- Amygdala-hippocampus circuit regulates stress coping via mGluR5-dependent BDNF signaling.Molecules and cells · 2026Article
- Glutamate Delta 1 Receptor in Synapses, Circuits, and Disease.The European journal of neuroscience · 2026Review
- Activity Deprivation Modulates the Shank3/Homer1/mGluR5 Signaling Pathway to Enable Synaptic Upscaling.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Calcium-sensing receptors promoted Homer1 expression and osteogenic differentiation in bone marrow mesenchymal stem cells.Open life sciences · 2025Article
- Identification of copy number variations through whole genome resequencing between Jiuyishan and Hyplus rabbits.Frontiers in veterinary science · 2025Article
- Pharmacology, Signaling and Therapeutic Potential of Metabotropic Glutamate Receptor 5 Negative Allosteric Modulators.ACS pharmacology & translational science · 2024Review
- Loss of synaptopodin impairs mGluR5 and protein synthesis-dependent mGluR-LTD at CA3-CA1 synapses.PNAS nexus · 2024Article
- The Involvement of Neuroinflammation in the Onset and Progression of Parkinson's Disease.International journal of molecular sciences · 2023Review
- Article
- VGLUT3 Deletion Rescues Motor Deficits and Neuronal Loss in the zQ175 Mouse Model of Huntington's Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
- Spinophilin Limits Metabotropic Glutamate Receptor 5 Scaffolding to the Postsynaptic Density and Cell Type Specifically Mediates Excessive Grooming.Biological psychiatry · 2023Article
- Blocked metabotropic glutamate receptor 5 enhances chemosensitivity in hepatocellular carcinoma and attenuates chemotoxicity in the normal liver by regulating DNA damage.Cancer gene therapy · 2022Article
- Group I mGluRs in Therapy and Diagnosis of Parkinson's Disease: Focus on mGluR5 Subtype.Biomedicines · 2022Review
- Different Aberrant Changes of mGluR5 and Its Downstream Signaling Pathways in the Scrapie-Infected Cell Line and the Brains of Scrapie-Infected Experimental Rodents.Frontiers in cell and developmental biology · 2022Article
- Activation of PLCβ1 enhances endocannabinoid mobilization to restore hippocampal spike-timing-dependent potentiation and contextual fear memory impaired by Alzheimer's amyloidosis.Alzheimer's research & therapy · 2021Article
- The mTORC2 Regulator Homer1 Modulates Protein Levels and Sub-Cellular Localization of the CaSR in Osteoblast-Lineage Cells.International journal of molecular sciences · 2021Article
73 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Group I metabotropic glutamate receptors (mGluRs) increase cellular levels of inositol-1,4,5-triphosphate (IP3) and thereby trigger intracellular Ca2+ release. Also, group I mGluRs are organized with members of Homer scaffold proteins into multiprotein complexes involved in postreceptor signaling. In this study, we investigated the relative importance of the IP3/Ca2+ signaling and novel Homer proteins in group I mGluR-mediated activation of extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) in cultured rat striatal neurons. We found that selective activation of mGluR5, but not mGluR1, increased ERK1/2 phosphorylation. Whereas the IP3/Ca2+ cascade transmits a small portion of signals from mGluR5 to ERK1/2, the member of Homer family Homer1b/c forms a central signaling pathway linking mGluR5 to ERK1/2 in a Ca2+-independent manner. This was demonstrated by the findings that the mGluR5-mediated ERK1/2 phosphorylation was mostly reduced by a cell-permeable Tat-fusion peptide that selectively disrupted the interaction of mGluR5 with the Homer1b/c and by small interfering RNAs that selectively knocked down cellular levels of Homer1b/c proteins. Furthermore, ERK1/2, when only coactivated by both IP3/Ca2+- and Homer1b/c-dependent pathways, showed the ability to phosphorylate two transcription factors, Elk-1 and cAMP response element-binding protein, and thereby facilitated c-Fos expression. Together, we have identified two coordinated signaling pathways (a conventional IP3/Ca2+ vs a novel Homer pathway) that differentially mediate the mGluR5-ERK coupling in neurons. Both the Ca2+-dependent and -independent pathways are corequired to activate ERK1/2 to a level sufficient to achieve the mGluR5-dependent synapse-to-nucleus communication imperative for the transcriptional regulation.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.