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BACKGROUND The INPP5E gene encodes for the inositol polyphosphate-5-phosphatase (INPP5E) 72 kDa protein that regulates the phosphoinositide signaling pathway and other cellular activities, but the functional role of this gene in embryonic neurodevelopment and neural tube defect (NTD) remains unclear. The aim of this study was to use a mouse model of NTD to investigate the expression levels of the INPP5E gene during neural development and the occurrence of NTD. MATERIAL AND METHODS In an established NTD mouse model, stereoscopy was used to look for morphological defects. Transcription and expression levels of the INPP5E gene in neural tissues were detected using real-time fluorescence quantitative polymerase chain reaction (PCR) and Western blotting in the NTD mouse embryos and compared with control mouse embryos. RESULTS The expression levels of the INPP5E gene decreased as embryonic development progressed in the neural tissue of control mice embryos, but showed no obvious trend in the neural tissues of the NTD mouse embryos. The expression levels of the INPP5E gene in NTD mouse embryos were significantly lower compared with control embryos, at the time of neural tube closure (gestational day 11.5). CONCLUSIONS The INPP5E gene regulates the process of embryonic neural development. Abnormal levels of expression of the INPP5E gene may contribute to NTDs. Increased knowledge of the expression pattern of the INPP5E gene may lead to an advanced understanding of the molecular mechanism of embryonic neurodevelopment and identify more specific directions to explore potential treatments for NTDs associated with abnormalities in INPP5E gene expression levels.

Relationship Between INPP5E Gene Expression and Embryonic Neural Development in a Mouse Model of Neural Tube Defect