ArticleThe Journal of biological chemistry2017
Differential regulation of the Rac1 GTPase-activating protein (GAP) BCR during oxygen/glucose deprivation in hippocampal and cortical neurons.
Article in The Journal of biological chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.
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Who cites it
10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.
- Systems-level transcriptomic analysis reveals synapse-related gene dysregulation in peripheral leukocytes of MDD patients.Scientific reports · 2026Pooled it
- Genetic variants of calcium and vitamin D metabolism in kidney stone disease.Nature communications · 2019Pooled it
- Bacterial expression of human small GTPases induces stochastic predatory responses and motility interference in Physarum polycephalum.PloS one · 2026Article
- The Proteomic Landscape of Parkin-Deficient and Parkin-Overexpressing Rat Nucleus Accumbens: An Insight into the Role of Parkin in Methamphetamine Use Disorder.Biomolecules · 2025Article
- TRPM2 and CaMKII Signaling Drives Excessive GABAergic Synaptic Inhibition Following Ischemia.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Rac1: A Regulator of Cell Migration and a Potential Target for Cancer Therapy.Molecules (Basel, Switzerland) · 2023Review
- S-Ketamine Exerts Antidepressant Effects by Regulating Rac1 GTPase Mediated Synaptic Plasticity in the Hippocampus of Stressed Rats.Cellular and molecular neurobiology · 2023Article
- Stepwise disassembly of GABAergic synapses during pathogenic excitotoxicity.Cell reports · 2021Article
- TRP Channels Regulation of Rho GTPases in Brain Context and Diseases.Frontiers in cell and developmental biology · 2020Review
- The Small Yeast GTPase Rho5 and Its Dimeric GEF Dck1/Lmo1 Respond to Glucose Starvation.International journal of molecular sciences · 2018Article
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Authors and funding
3 authors at 1 institution in 2 countries.
Funding
Abstract
Brain ischemia causes oxygen and glucose deprivation (OGD) in neurons, triggering a cascade of events leading to synaptic accumulation of glutamate. Excessive activation of glutamate receptors causes excitotoxicity and delayed cell death in vulnerable neurons. Following global cerebral ischemia, hippocampal CA1 pyramidal neurons are more vulnerable to injury than their cortical counterparts, but the mechanisms that underlie this difference are unclear. Signaling via Rho-family small GTPases, their upstream guanine nucleotide exchange factors, and GTPase-activating proteins (GAPs) is differentially dysregulated in response to OGD/ischemia in hippocampal and cortical neurons. Increased Rac1 activity caused by OGD/ischemia contributes to neuronal death in hippocampal neurons via diverse effects on NADPH oxidase activity and dendritic spine morphology. The Rac1 guanine nucleotide exchange factor Tiam1 mediates an OGD-induced increase in Rac1 activity in hippocampal neurons; however, the identity of an antagonistic GAP remains elusive. Here we show that the Rac1 GAP breakpoint cluster region (BCR) associates with NMDA receptors (NMDARs) along with Tiam1 and that this protein complex is more abundant in hippocampal compared with cortical neurons. Although total BCR is similar in the two neuronal types, BCR is more active in hippocampal compared with cortical neurons. OGD causes an NMDAR- and Ca
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