牙胚胎中的c-Mpl mRNA的时空表达特征:与血管化相关基因的比较表达动态
Masataka Sunohara1, Shigeru Morikawa2, Kazuto Shimada1
1Department of Anatomy, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan.
概括
在牙发育过程中,c-Mpl mRNA表达在牙芽细胞前代细胞中吸引血管内皮细胞到牙上. 这些细胞通过像Ang-1这样的血管分子指导血管形成.
科学领域:
- 发展生物学 发展生物学
- 血管生物学 血管生物学
- 血液学 血液学 血液学
背景情况:
- 血管化对于胚胎器官发育和成人组织修复至关重要.
- 在牙发育过程中,内皮细胞通过血管生成在牙上形成血管.
- 在正在发育的牙中指导血管化的特定细胞仍然未被确定.
研究的目的:
- 研究c-Mpl mRNA表达在小鼠牙发育过程中的血管化中的作用.
- 为了确定负责吸引和引导血管进入牙周的细胞类型.
主要方法:
- 在胎儿小鼠牙中分析了c-Mpl mRNA的时空表达.
- 将c-Mpl表达与造血细胞 (CD41) 和血管性因子 (Ang-1,VEGFR2) 的标记物进行比较.
- 使用in situ杂交和免疫组织化学进行表达分析.
主要成果:
- 在各种牙胚芽区域中检测到c-Mpl mRNA,包括牙乳头,以时空控制的方式.
- 在牙发育过程中缺少CD41表达细胞.
- 牙乳头中的c-Mpl mRNA表达与Ang-1表达相关,并且先于内皮细胞入侵,后来在分化质细胞中发现了信号.
结论:
- 在牙发育过程中,分化的芽细胞以时空调节的方式表达c-Mpl mRNA.
- 假设c-Mpl-表达的口腔细胞原生细胞吸引血管内皮细胞进入牙上.
- 建议这些细胞通过像Ang-1这样的血管性分子指导血管化,可能调节细胞亡和扩散以促进正常的牙发育.
相关概念视频
01:58Cell Specific Gene Expression
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
01:58Cell Specific Gene Expression
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...