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High-throughput screen detects calcium signaling dysfunction in typical sporadic autism spectrum disorder
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High-throughput screen detects calcium signaling dysfunction in typical sporadic autism spectrum disorder
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Journal Article
High-throughput screen detects calcium signaling dysfunction in typical sporadic autism spectrum disorder
2017
Overview
Autism spectrum disorder (ASD) is a heterogeneous group of neurodevelopmental disorders without any defined uniting pathophysiology. Ca
2+
signaling is emerging as a potential node in the genetic architecture of the disorder. We previously reported decreased inositol trisphosphate (IP
3
)-mediated Ca
2+
release from the endoplasmic reticulum in several rare monogenic syndromes highly comorbid with autism – fragile X and tuberous sclerosis types 1 and 2 syndromes. We now extend those findings to a cohort of subjects with sporadic ASD without any known mutations. We developed and applied a high throughput Fluorometric Imaging Plate Reader (FLIPR) assay to monitor agonist-evoked Ca
2+
signals in human primary skin fibroblasts. Our results indicate that IP
3
-mediated Ca
2+
release from the endoplasmic reticulum in response to activation of purinergic receptors is significantly depressed in subjects with sporadic as well as rare syndromic forms of ASD. We propose that deficits in IP
3
-mediated Ca
2+
signaling represent a convergent hub function shared across the spectrum of autistic disorders – whether caused by rare highly penetrant mutations or sporadic forms – and holds promise as a biomarker for diagnosis and novel drug discovery.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
