ArticleeLife2022
Presynaptic Rac1 controls synaptic strength through the regulation of synaptic vesicle priming.
Article in eLife, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 25 citations in OpenAlex.
- Syntaxin-3 Regulates Tight Junction Assembly in Human Retinal Pigment Epithelium.Cell biochemistry and function · 2026Article
- Munc13-1 couples DAG and CaScience advances · 2026Article
- Synaptic aging and neurodegeneration: the role of synaptic vesicle dynamics and neurotransmitter imbalance.Biogerontology · 2026Review
- Microglia-Neuron Interactions in Alzheimer's Disease.Current neuropharmacology · 2026Review
- Rho signaling promotes cell excitability and synaptic transmission.bioRxiv : the preprint server for biology · 2025Article
- Number and relative abundance of synaptic vesicles in functionally distinct priming states determine synaptic strength and short-term plasticity.The Journal of physiology · 2025Article
- Presynaptic αNeuron · 2025Article
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- Impacts of perinatal nicotine exposure on nicotinic acetylcholine receptor expression and glutamatergic synaptic transmission in the mouse auditory brainstem.The Journal of physiology · 2025Article
- Cellular and synaptic specializations for sub-millisecond precision in the mammalian auditory brainstem.Frontiers in cellular neuroscience · 2025Review
- Single-vesicle imaging reveals actin-dependent spatial restriction of vesicles at the active zone, essential for sustained transmission.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Article
- Fully-primed slowly-recovering vesicles mediate presynaptic LTP at neocortical neurons.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Confocal Imaging and 3D Reconstruction to Determine How Genetic Perturbations Impact Presynaptic Morphology at the Mouse Calyx of Held.Bio-protocol · 2023Article
- Article
- Presynaptic Rac1 controls synaptic strength through the regulation of synaptic vesicle priming.eLife · 2022Article
Corrections and comments
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Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
Abstract
Synapses contain a limited number of synaptic vesicles (SVs) that are released in response to action potentials (APs). Therefore, sustaining synaptic transmission over a wide range of AP firing rates and timescales depends on SV release and replenishment. Although actin dynamics impact synaptic transmission, how presynaptic regulators of actin signaling cascades control SV release and replenishment remains unresolved. Rac1, a Rho GTPase, regulates actin signaling cascades that control synaptogenesis, neuronal development, and postsynaptic function. However, the presynaptic role of Rac1 in regulating synaptic transmission is unclear. To unravel Rac1's roles in controlling transmitter release, we performed selective presynaptic ablation of Rac1 at the mature mouse calyx of Held synapse. Loss of Rac1 increased synaptic strength, accelerated EPSC recovery after conditioning stimulus trains, and augmented spontaneous SV release with no change in presynaptic morphology or AZ ultrastructure. Analyses with constrained short-term plasticity models revealed faster SV priming kinetics and, depending on model assumptions, elevated SV release probability or higher abundance of tightly docked fusion-competent SVs in Rac1-deficient synapses. We conclude that presynaptic Rac1 is a key regulator of synaptic transmission and plasticity mainly by regulating the dynamics of SV priming and potentially SV release probability.
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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.