ArticlePloS one2014
Src kinases regulate de novo actin polymerization during exocytosis in neuroendocrine chromaffin cells.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 30 citations in OpenAlex.
- Piezo1-mediated mechanotransduction controls osteocyte maturation and dendrite development via a YAP-CCN-Src signaling axis.Nature communications · 2025Article
- Eating the brain - A multidisciplinary study provides new insights into the mechanisms underlying the cytopathogenicity of Naegleria fowleri.PLoS pathogens · 2025Article
- Isolation and Purification of Chromaffin Granules from Adrenal Glands and Cultured Neuroendocrine Cells.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Wasl is crucial to maintain microglial core activities during glioblastoma initiation stages.Glia · 2022Article
- Multiple Roles of Actin in Exo- and Endocytosis.Frontiers in synaptic neuroscience · 2022Review
- Anesthetic Propofol Promotes Tumor Metastasis in Lungs via GABAAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021Article
- Leptin modulates pancreatic β-cell membrane potential through Src kinase-mediated phosphorylation of NMDA receptors.The Journal of biological chemistry · 2020Article
- Defects in G-Actin Incorporation into Filaments in Myoblasts Derived from Dysferlinopathy Patients Are Restored by Dysferlin C2 Domains.International journal of molecular sciences · 2019Article
- RCAN1 Knockdown Reverts Defects in the Number of Calcium-Induced Exocytotic Events in a Cellular Model of Down Syndrome.Frontiers in cellular neuroscience · 2018Article
- How does the stimulus define exocytosis in adrenal chromaffin cells?Pflugers Archiv : European journal of physiology · 2018Review
- Release of HIV-1 sequestered in the vesicles of oral and genital mucosal epithelial cells by epithelial-lymphocyte interaction.PLoS pathogens · 2017Article
- The F-Actin Binding Protein Cortactin Regulates the Dynamics of the Exocytotic Fusion Pore through its SH3 Domain.Frontiers in cellular neuroscience · 2017Article
- Actin dynamics provides membrane tension to merge fusing vesicles into the plasma membrane.Nature communications · 2016Article
- Entamoeba histolytica Cysteine Proteinase 5 Evokes Mucin Exocytosis from Colonic Goblet Cells via αvβ3 Integrin.PLoS pathogens · 2016Article
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The cortical actin network is dynamically rearranged during secretory processes. Nevertheless, it is unclear how de novo actin polymerization and the disruption of the preexisting actin network control transmitter release. Here we show that in bovine adrenal chromaffin cells, both formation of new actin filaments and disruption of the preexisting cortical actin network are induced by Ca2+ concentrations that trigger exocytosis. These two processes appear to regulate different stages of exocytosis; whereas the inhibition of actin polymerization with the N-WASP inhibitor wiskostatin restricts fusion pore expansion, thus limiting the release of transmitters, the disruption of the cortical actin network with cytochalasin D increases the amount of transmitter released per event. Further, the Src kinase inhibitor PP2, and cSrc SH2 and SH3 domains also suppress Ca2+-dependent actin polymerization, and slow down fusion pore expansion without disturbing the cortical F-actin organization. Finally, the isolated SH3 domain of c-Src prevents both the disruption of the actin network and the increase in the quantal release induced by cytochalasin D. These findings support a model where a rise in the cytosolic Ca2+ triggers actin polymerization through a mechanism that involves Src kinases. The newly formed actin filaments would speed up the expansion of the initial fusion pore, whereas the preexisting actin network might control a different step of the exocytosis process.
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