ArticleMolecular neurobiology2021
Arhgap22 Disruption Leads to RAC1 Hyperactivity Affecting Hippocampal Glutamatergic Synapses and Cognition in Mice.
Article in Molecular neurobiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 12 citations in OpenAlex.
- Epigenetic markers of response to psychotherapy in obsessive-compulsive disorder.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Article
- Isogenic cortical organoids enable precision targeting of APP variant-specific pathways in Alzheimer's disease.bioRxiv : the preprint server for biology · 2026Article
- Spatial Changes in Hippocampal Transcriptomic Profiles Following Limbic Non-convulsive Status Epilepticus: Insights into Long-Term Inflammation and Cognitive Deficits.Molecular neurobiology · 2026Article
- LncRNA THUMPD3-AS1 Regulates Behavioral and Synaptic Structural Abnormalities in Schizophrenia via miR-485-5p and ARHGAP8.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Combining re-evaluation and new exome sequencing to identify novel genetic variants and candidate genes in Iranian families with non-syndromic hearing loss.Molecular biology reports · 2025Article
- Neuronal network activity and connectivity are impaired in a conditional knockout mouse model with PCDH19 mosaic expression.Molecular psychiatry · 2024Article
- Interaction models matter: an efficient, flexible computational framework for model-specific investigation of epistasis.BioData mining · 2024Article
- Genomic insights into adaptation and inbreeding among Sub-Saharan African cattle from pastoral and agropastoral systems.Frontiers in genetics · 2024Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
Rho GTPases are a class of G-proteins involved in several aspects of cellular biology, including the regulation of actin cytoskeleton. The most studied members of this family are RHOA and RAC1 that act in concert to regulate actin dynamics. Recently, Rho GTPases gained much attention as synaptic regulators in the mammalian central nervous system (CNS). In this context, ARHGAP22 protein has been previously shown to specifically inhibit RAC1 activity thus standing as critical cytoskeleton regulator in cancer cell models; however, whether this function is maintained in neurons in the CNS is unknown. Here, we generated a knockout animal model for arhgap22 and provided evidence of its role in the hippocampus. Specifically, we found that ARHGAP22 absence leads to RAC1 hyperactivity and to an increase in dendritic spine density with defects in synaptic structure, molecular composition, and plasticity. Furthermore, arhgap22 silencing causes impairment in cognition and a reduction in anxiety-like behavior in mice. We also found that inhibiting RAC1 restored synaptic plasticity in ARHGAP22 KO mice. All together, these results shed light on the specific role of ARHGAP22 in hippocampal excitatory synapse formation and function as well as in learning and memory behaviors.
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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.