在产后发育和上腺髓生理再生期间调节形态遗传过程
S S Obernikhin1, N V Yaglova1, E P Timokhina1
1Laboratory of Endocrine System Development, A. P. Avtsyn Research Institute of Human Morphology, A. P. Petrovsky Russian Research Center of Surgery, Moscow, Russia.
Bulletin of experimental biology and medicine
|September 30, 2023
概括
产后上腺髓生长停止涉及减少细胞分裂和Wnt信号和Sonic Hedgehog通路的激活. 高度分化的细胞表达Oct4,这表明再生的分化机制.
科学领域:
- 内分泌学 在内分泌学.
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 上腺髓的产后发育涉及复杂的调节过程.
- 了解终止生长的分子机制对于理解上腺恒温至关重要.
研究的目的:
- 调查出生后大鼠上腺髓发育过程中形态遗传过程的调节.
- 确定关键的分子通路和细胞群,参与生长终止和潜在的再生.
主要方法:
- 对染色细胞增殖率的分析.
- 评估Wnt信号通路的激活情况.
- 对Sonic Hedgehog联体体表达的定量分析.
- 在上腺髓细胞中对转录因子Oct4和Sox2的评估.
主要成果:
- 上腺髓生长终止与氨酸细胞增殖减少相关.
- 观察到正规Wnt信号通路的激活和Sonic Hedgehog表达的增强.
- 增加了Oct4表达细胞的百分比,没有Sox2表达.
- 具有激活Wnt信号,Oct4和Sonic Hedgehog表达的细胞具有高度差异化,产生氨酸氧酶的克罗马芬细胞.
结论:
- 这些发现表明,上腺髓生长的终止与特定的信号通路激活和转录因子表达的变化有关.
- 脱差异化,Oct4表达的克罗马芬细胞的存在表明了上腺髓生理再生的潜在机制.
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