Department of Anatomy, School of Medicine, Kangwon National University, Chuncheon 24341, Republic of Korea.
BIT Medical Convergence Graduate Program, Department of Microbiology and Immunology, School of Medicine, Kangwon National University, Chuncheon 24341, Republic of Korea.
Cells. 2023 Jul 27;12(15):1954. doi: 10.3390/cells12151954.
Palatogenesis is a complex and intricate process involving the formation of the palate through various morphogenetic events highly dependent on the surrounding context. These events comprise outgrowth of palatal shelves from embryonic maxillary prominences, their elevation from a vertical to a horizontal position above the tongue, and their subsequent adhesion and fusion at the midline to separate oral and nasal cavities. Disruptions in any of these processes can result in cleft palate, a common congenital abnormality that significantly affects patient's quality of life, despite surgical intervention. Although many genes involved in palatogenesis have been identified through studies on genetically modified mice and human genetics, the precise roles of these genes and their products in signaling networks that regulate palatogenesis remain elusive. Recent investigations have revealed that palatal shelf growth, patterning, adhesion, and fusion are intricately regulated by numerous transcription factors and signaling pathways, including Sonic hedgehog (Shh), bone morphogenetic protein (Bmp), fibroblast growth factor (Fgf), transforming growth factor beta (Tgf-β), Wnt signaling, and others. These studies have also identified a significant number of genes that are essential for palate development. Integrated information from these studies offers novel insights into gene regulatory networks and dynamic cellular processes underlying palatal shelf elevation, contact, and fusion, deepening our understanding of palatogenesis, and facilitating the development of more efficacious treatments for cleft palate.
腭发生是一个复杂而精细的过程,涉及通过高度依赖周围环境的各种形态发生事件形成腭。这些事件包括胚胎上颌隆起的腭突向外生长,从垂直位置抬高到舌上方的水平位置,以及随后在中线处粘附和融合,将口腔和鼻腔分开。这些过程中的任何干扰都可能导致腭裂,这是一种常见的先天性异常,尽管进行了手术干预,但仍会显著影响患者的生活质量。尽管通过对基因修饰小鼠和人类遗传学的研究已经确定了许多参与腭发生的基因,但这些基因及其产物在调节腭发生的信号网络中的精确作用仍然难以捉摸。最近的研究表明,腭突的生长、模式形成、粘附和融合受到许多转录因子和信号通路的精细调节,包括 Sonic hedgehog (Shh)、骨形态发生蛋白 (Bmp)、成纤维细胞生长因子 (Fgf)、转化生长因子 β (Tgf-β)、Wnt 信号通路等。这些研究还确定了许多对腭发育至关重要的基因。这些研究的综合信息提供了对基因调控网络和腭突抬高、接触和融合背后的动态细胞过程的新见解,加深了我们对腭发生的理解,并促进了更有效的腭裂治疗方法的开发。
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