神经系统的发展. 共享的监管计划表明,神经细胞中保持了芽细胞阶段潜力
Elsy Buitrago-Delgado1, Kara Nordin1, Anjali Rao1
1Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA.
Science (New York, N.Y.)
|May 2, 2015
概括
神经细胞,是脊椎动物独有的,可以发展成中皮组织. 这项研究揭示了Xenopus中共享的分子因素,这些因素在神经和囊细胞中保持了多能性,这表明了进化联系.
科学领域:
- 发育生物学是发展生物学.
- 进化发育生物学 进化发育生物学
- 细胞和分子生物学是细胞和分子生物学.
背景情况:
- 神经细胞,仅限于脊椎动物,起源于外皮,但表现出显著的发育可塑性.
- 这些细胞可以分化为中皮衍生物,这种特征比大多数外皮细胞持续更长时间,这引发了关于这种潜力的机制的问题.
- 神经细胞对脊椎动物体平面 (bauplan) 的贡献是显著的,但它们广泛的发育能力的起源仍然是一个活跃的研究领域.
研究的目的:
- 研究神经细胞广泛发育潜力的基础分子机制.
- 探索神经细胞和其他多能细胞群之间的潜在共享调控网络.
- 了解神经细胞如何获得和保持其独特的功效,特别是它们产生中皮衍生物的能力.
主要方法:
- 在神经和芽细胞中对基因表达模式的比较分析.
- 在Xenopus中进行功能研究,以评估关键调节因素的作用.
- 在两种细胞类型中研究与多能性相关的分子通路.
主要成果:
- 在神经和芽细胞中识别共同的分子支柱,控制神经和芽细胞中的功效.
- 证明关键的神经调节因素也表达在Xenopus blastula动物极细胞中.
- 证据表明,这些因素在两种细胞类型中都促进了多能性.
结论:
- 神经细胞可能是从一个保留了对多能性负责的调节网络的芽细胞子集进化出来的.
- 共同的分子因素对于保持不同细胞群体的发育潜力至关重要.
- 这一发现提供了关于脊椎动物特异性细胞类型的进化起源及其独特能力的见解.
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