Cdh1-APC控制了哺乳动物大脑中的轴突生长和模式
Yoshiyuki Konishi1, Judith Stegmüller, Takahiko Matsuda
1Department of Pathology, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.
概括
在神经元中抑制含有Cdh1的亚纳酶促进复合体 (APC) 会促进轴突生长. 这一发现揭示了Cdh1-APC在调节神经发育和潜在再生方面的新角色.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
背景情况:
- 亚纳酶促进复合体 (APC),特别是Cdh1-APC复合体,在转移后的神经元中表达高.
- 在神经系统内Cdh1-APC的精确功能在很大程度上仍未被描述.
研究的目的:
- 研究Cdh1-APC在神经元发育和轴突生长中的作用.
- 为了确定Cdh1-APC是否影响轴突对髓等抑制线索的反应.
主要方法:
- 在初级神经元中通过RNA干扰利用Cdh1敲击.
- 采用小脑切片覆盖试验来研究轴突生长在体外.
- 在成长中的小鼠大脑中进行了体内实验.
主要成果:
- 抑制Cdh1-APC特别增强了初级神经元中的轴突生长.
- 降低Cdh1导致颗粒神经元轴突生长和并行纤维模式的细胞自主缺陷.
- 神经元中的Cdh1RNA干扰抵消了髓对轴突延伸的抑制作用.
结论:
- Cdh1-APC在调节轴突生长和大脑发育过程中的模式方面发挥着关键作用.
- 在受伤后,Cdh1-APC还可能限制成年大脑的轴突再生.
相关概念视频
Hedgehog 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...
Anaphase Promoting Complex
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
Cadherins in Tissue Organization
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...


