HDAC3 Is Required for Posterior Lateral Line Development in Zebrafish

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• 作者：Yingzi He ; Zhengmin Wang ; Shaoyang Sun ; Dongmei Tang ; Wenyan Li…
• 关键词：Fgf signaling ; HDAC3 ; Posterior lateral line ; Zebrafish
• 刊名：Molecular Neurobiology
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：53
• 期：8
• 页码：5103-5117
• 全文大小：12,746 KB
• 刊物主题：Neurosciences; Neurobiology; Cell Biology; Neurology;
• 出版者：Springer US
• ISSN：1559-1182
• 卷排序：53

文摘

Histone deacetylases (HDACs) are involved in multiple developmental processes, but their functions in the development of mechanosensory organs are largely unknown. In the present study, we report the presence of HDAC3 in the zebrafish posterior lateral line primordium and newly deposited neuromasts. We used morpholinos to show that HDAC3 knockdown severely disrupts the development of the posterior lateral line and reduces the numbers of neuromasts and sensory hair cells within these organs. In HDAC3 morphants, we also observed decreased cell proliferation and increased apoptosis, which might lead to these defects. Finally, we show that HDAC3 deficiency results in attenuated Fgf signaling in the migrating primordium. In situ hybridizations indicate aberrant expression patterns of Notch signaling pathway genes in HDAC3 morphants. In addition, inhibition of HDAC3 function diminishes cxcr7b and alters cxcl12a expression in the migrating primordium. Our results indicate that HDAC3 plays a crucial role in regulating posterior lateral line (PLL) formation and provide evidence for epigenetic regulation in auditory organ development.