Abstract
Neural tube malformation is a common kind of human birth defect. High temperature is one of the most common physical teratogenic factors. Several studies have suggested that heat stress may cause neurotoxicity during brain development, but more studies are warranted to reveal the mechanism and draw consistent conclusions. The current study used a cell model of primary mouse embryonic neural stem/progenitor cells (NSPCs) subjected to heat stress of 43 °C for 20 min. Our study investigated the changes in the NSPCs transcriptome under heat stress using high-throughput mRNA-seq. The NSPCs showed remarkably altered genes associated with cell growth, proliferation, cell cycle, and survival when exposed to heat stress. Heat stress reduced cell viability, proliferation, and neurosphere formation and caused cell cycle arrest and apoptosis in cultured NSPCs. PCR arrays confirmed that the TNF receptor family plays an important role in the apoptosis of NSPCs during heat stress. The results of real-time PCR confirmed that heat stress affects the expression of critical genes. We provide transcriptomic insight into heat stress-induced developmental neurotoxic effects and the underlying mechanisms.
Published Version
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