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Feng, Xiao; Bader, Benjamin M.; Yang, Fan; Segura, Monica; Schultz, Luise; Schröder, Olaf H.-U.; Rolfs, Arndt; Luo, Jiankai
Brain research, 09/2018, Letnik: 1694Journal Article
•MEA was used to analyze spontaneous electrical activity in NPC1−/− cortical neurons.•The electrical activity in NPC1−/− neurons decreased during neuronal development.•Application of DHPG improved the defective electrical activity in NPC1−/− neurons. Niemann-Pick Type C1 (NPC1) disease is an autosomal recessive neurodegenerative disease characterized by an excessive accumulation of unesterified cholesterol in late endosomes/lysosomes. Patients with NPC1 disease show a series of symptoms in neuropathology, including a gradually increased loss of motor control and seizures. However, mechanism of the neurological manifestations in NPC1 disease is not fully understood yet. In this study, we utilized the micro-electrode array (MEA) to analyze the spontaneous extracellular electrical activity in cultivated cortical neurons of the NPC1 mutant (NPC1−/−) mouse. Our results show a decrease of the spontaneous electrical activity in NPC1−/− neuronal network when compared to wild type neurons, as indicated by the decreased spike rate, burst rate, event rate, and the increased burst period and event period. Application of 3,5-dihydroxyphenylglycine (DHPG), a specific agonist of group I metabotropic glutamate receptors, improved the electrical activity of the NPC1−/− neuronal network, suggesting that DHPG can be used as a potential therapeutic strategy for recovery of the electrical activity in NPC1 disease.
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