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    Calcium signaling controls many key processes in neurons, including gene expression, axon guidance, and synaptic plasticity. In contrast to calcium influx through voltage- or neurotransmitter-gated channels, regulatory pathways that control store-operated calcium entry (SOCE) in neurons are poorly understood. Here, we report a transcriptional control of Stim1 (stromal interaction molecule 1) gene, which is a major sensor of endoplasmic reticulum (ER) calcium levels and a regulator of SOCE. By using a genome-wide chromatin immunoprecipitation and sequencing approach in mice, we find that NEUROD2, a neurogenic transcription factor, binds to an intronic element within the Stim1 gene. We show that NEUROD2 limits Stim1 expression in cortical neurons and consequently fine-tunes the SOCE response upon depletion of ER calcium. Our findings reveal a novel mechanism that regulates neuronal calcium homeostasis during cortical development.


    Gokhan Guner, Gizem Guzelsoy, Fatma Sadife Isleyen, Gulcan Semra Sahin, Cansu Akkaya, Efil Bayam, Eser Ilgin Kotan, Alkan Kabakcioglu, Gulayse Ince-Dunn. NEUROD2 Regulates Stim1 Expression and Store-Operated Calcium Entry in Cortical Neurons. eNeuro. 2017 Jan-Feb;4(1)

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    PMID: 28303257

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