相关实验视频
Updated: Jul 25, 2025

Method of Studying Palatal Fusion using Static Organ Culture
Published on: September 19, 2015
拉马5:一个新的致病基因,用于非综合征裂唇,有或没有裂 palates
Zhenzhen Fu1, Yan Qi2, Ling-Fa Xue1
1Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China; Department of Stomatology, Qingdao University, Qingdao, Shandong, China.
在小鼠中,LAMA5沉默会通过阻碍细胞增殖和促进细胞亡导致口腔裂. 这种干扰也会影响SHH信号通路,影响口腔发育.
科学领域:
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 研究拉米宁子单元α-5 (LAMA5) 在哺乳动物口腔发育中的作用.
- 了解 palatogenesis 背后的分子机制.
研究的目的:
- 为了确定LAMA5对小鼠胚胎口腔融合的影响.
- 阐明在口腔发育过程中受到LAMA5影响的分子通路.
主要方法:
- 在体外培养胚胎13.5天 (E13.5) 鼠标的 palatine 过程.
- 用LAMA5-shRNA腺病毒感染LAMA5表达的沉默.
- 使用光显微镜评估 palatal 融合.
- 分析与细胞增殖,细胞亡和信号通路 (例如,SHH) 相关的基因和蛋白质表达.
主要成果:
- LAMA5沉默导致了口腔融合 (口腔裂) 的失败.
- 观察到扩散标志物 (Ki67,Cyclin D1) 的表达减少和亡标志物 (Caspase 3) 的增加.
- 观察到与SHH信号通路 (Gli1) 的干扰,而EMT标记物没有显著变化.
结论:
- 在小鼠中,LAMA5对正常的 palatal 发育至关重要.
- 通过抑制细胞增殖,促进细胞亡,并干扰SHH信号通路,LAMA5沉默会诱导口腔裂.
- 表皮 - 半机体过渡 (EMT) 可能不是LAMA5沉默诱导的口腔裂的主要机制.
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