压力激活蛋白激酶MKK7在发育和成熟的小鼠大脑中的区域特异性作用
Satoshi Kofuji1, Yiming Qian2, Hiroshi Nishina3
1Medical Research Laboratory, Institute of Integrated Research, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan. kofuji.dbio@mri.tmd.ac.jp.
Scientific reports
|July 2, 2025
概括
线素激活蛋白激酶激酶7 (MKK7) 对大脑发育至关重要. 有条件的Mkk7淘汰赛小鼠显示MKK7
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 应激激酶MKK7对大脑功能起着重要作用.
- 以前的研究表明,神经干细胞特异性的Mkk7缺失导致围产期死亡.
- 目前尚不清楚MKK7在特定区域胚胎大脑发育中的确切作用.
研究的目的:
- 研究胚胎大脑发育期间MKK7的区域特异性功能.
- 确定MKK7缺失在不同大脑区域对发育和生存能力的影响.
主要方法:
- 三种条件Mkk7淘汰赛 (Mkk7 cKO) 鼠标菌株的生成.
- 在脊髓,中脑/小脑或大脑中向删除Mkk7.
- 由此产生的Mkk7 cKO小鼠的表型分析,包括生存能力和大脑形态.
主要成果:
- 脊髓特异性的Mkk7缺失对胚胎活力没有影响.
- 中脑/小脑特异性的Mkk7删除导致围产期死亡.
- 大脑特异性的Mkk7缺失导致在5周内产后死亡,观察到大脑皮层变薄,心室扩大,MAP1B酸化减少.
结论:
- MKK7以特定区域的方式调节大脑发育和成熟.
- MKK7对于中脑/小脑和大脑的正常发育和生存至关重要.
- 这些发现扩大了对MKK7在中枢神经系统中的多样性作用的理解.
更多相关视频
09:32Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
Published on: June 15, 2017
8.8K
10:41Visualizing Protein Kinase A Activity In Head-fixed Behaving Mice Using In Vivo Two-photon Fluorescence Lifetime Imaging Microscopy
Published on: June 7, 2019
8.6K
相关概念视频
01:07MAPK Signaling Cascades
6.2K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
6.2K
01:22PI3K/mTOR/AKT Signaling Pathway
4.0K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
4.0K