龙 Jun介导了Ras-依赖的光受体的确定
D Bohmann1, M C Ellis, L M Staszewski
1European Molecular Biology Laboratory, Heidelberg, Federal Republic of Germany.
Cell
|September 23, 1994
概括
德洛索菲拉转录因子Jun对于眼中的神经元发育至关重要. Jun调节光受体细胞命运的决定和分化,作用于关键信号通路的下游.
科学领域:
- 发育生物学是发展生物学.
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
背景情况:
- 确定神经元细胞命运是发育生物学中的一个基本过程.
- 像sevenless/Ras这样的信号通路在发育过程中在细胞命运决定中发挥着关键作用.
研究的目的:
- 为了研究转录因子Jun在Drosophila melanogaster眼睛形象盘中的神经元发育中的作用.
- 阐明Jun表达与光受体细胞命运决定之间的关系.
主要方法:
- 分析Jun在眼睛形象盘中的时间和空间表达模式.
- 在特定细胞群中表达Jun的主导负和构成性活性形式.
- 研究Jun操纵对光受体分化和细胞命运的影响.
- 检查Jun与sevenless/Ras信号通路之间的相互作用.
主要成果:
- 容表达与眼睛形象盘中的光受体命运决定有关.
- 抑制Jun功能导致光受体的剂量依赖性损失.
- 过度表达Jun可以诱导额外的光受体细胞的形成.
- 在七无/拉斯路径的下游作用,调节其对细胞命运的影响.
结论:
- 对于正确的神经元发育和Drosophila眼中的光受体分化至关重要.
- 俊在调节神经元命运时,作为七无/Ras信号通路的关键下游组件.
- 了解Jun的作用,可以了解神经发生的遗传控制.
相关概念视频
Receptor-mediated Endocytosis
Overview
Receptor-mediated Endocytosis
Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
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The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
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Channel Rhodopsins
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