线素激活蛋白激酶激酶激酶1过度表达破坏了眼睛表面表皮的发育
Maureen Mongan1, Bo Xiao1, Antonius Christianto1
1Department of Environmental and Public Health Sciences, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA.
线素激活蛋白激酶激酶1 (MAP3K1) 对于眼发育至关重要. 它的剂量会影响眼睛表面上皮质,影响眼的闭合,透镜的形成和胚胎发生期间的角膜完整性.
科学领域:
- 发展生物学 发展生物学
- 分子信号传输的方法
- 眼科医生 眼科 眼科
背景情况:
- 中原激活蛋白激酶激酶1 (MAP3K1) 对于胚胎眼关闭至关重要.
- 由于MAPK通路的破坏,小鼠的Map3k1缺乏导致出生时眼睛开放的表型.
研究的目的:
- 通过获得功能的小鼠模型,研究MAP3K1在眼部发育中的作用.
- 阐明MAP3K1对眼睛表面上皮质 (OSE) 的影响背后的机制.
主要方法:
- 产生了可诱导的功能增益的Map3k1转基因小鼠 (Map3k1TG).
- 交叉MAP3k1TG与Le-Cre小鼠用于OSE中的向MAP3K1过度表达.
- 分析了胚胎眼睛表型,并进行了体外/体内信号通路评估.
主要成果:
- 在OSE中MAP3K1过度表达导致眼过早关闭,透镜退化和角膜.
- 眼上皮表皮表现出异常蛋白表达的加厚.
- 在淘汰赛模型中,MAP3K1调制影响了眼关闭和上皮质厚度.
- 过度表达激活了JNK-c-Jun,WNT,TGFβ和Notch信号通路.
结论:
- MAP3K1在调节眼膜上皮质增殖,分化和形态发生方面发挥了剂量敏感的作用.
- 异常的MAP3K1水平会扰乱眼的正常发育和透镜的形成.
- 在胚胎发生过程中,MAP3K1信号通路对眼睛表面发育至关重要.
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