相关实验视频
Updated: Jul 8, 2026
06:42
Subtype-selective Electroporation of Cortical Interneurons
Published on: August 18, 2014
Lhx2选择器活动指定皮质身份并抑制海马组织者命运
Vishakha S Mangale1, Karla E Hirokawa, Prasad R V Satyaki
1Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India.
Science (New York, N.Y.)
|January 19, 2008
概括
Lhx2 是确定大脑大脑皮层身份的关键基因. 它在发育早期起作用,以指定皮质细胞并防止其他细胞命运,这对大脑组织有影响.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 大脑皮层的发展始于神经皮质的规范.
- 了解皮质认同的内在决定因素对于发育神经科学至关重要.
研究的目的:
- 调查Lhx2作为选择基因在指定皮质认同中的作用.
- 确定Lhx2作用在皮层发育中的关键时期和机制.
- 阐明皮质环在大脑组织中的功能.
主要方法:
- 利用小鼠遗传马赛克研究基因功能.
- 使用定时基因失活来分析发育过程.
- 观察到Lhx2.2的细胞自主和空间依赖效应.
主要成果:
- Lhx2 功能作为皮质认同的重要内在决定因素.
- Lhx2的选择活性仅限于皮质神经上皮质发育的早期关键时期.
- Lhx2的损失导致横向采用抗血标识,中间采用皮质血标识.
- 皮层半球细胞诱导和组织子宫外海马场.
结论:
- Lhx2作为一个经典的选择基因,指定皮质命运和抑制替代命运.
- 这些发现确立了皮质环作为海马组织者的地位.
- 这项研究为管理早期大脑发育和区域模式的分子机制提供了关键的见解.
相关概念视频
02:33Hedgehog Signaling Pathway
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
01:51Determination
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...