类似MARCKS的蛋白质是轴突附属体再生的启动分子
Takuji Sugiura1,2, Heng Wang3, Rico Barsacchi2
1DFG Research Center for Regenerative Therapies (CRTD), Technische Universität Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.
Nature
|March 3, 2016
概括
科学家们确定了像轴骨一样的蛋白质 (MLP) 是启动尾再生的关键分子. 这种细胞外因素触发了细胞周期的初始反应,
科学领域:
- 再生生物学
- 分子生物学
- 发育生物学
背景情况:
- 再生需要精确的分子信号来启动细胞增殖.
- 虽然已知神经信号可以支持轴突的持续再生,但最初的触发分子仍未确定.
研究的目的:
- 确定与伤口相关的分子,负责启动尾附属体再生中的增殖反应.
主要方法:
- 使用表达式克隆策略来选候选分子.
- 在体内进行功能增益和丧失测定以验证已识别的分子的功能.
主要成果:
- 标识了像轴一样的蛋白质 (MLP) 作为细胞外释放的因子.
- 证明MLP诱导细胞循环的初始反应对于启动再生至关重要.
结论:
- 像Axolotl MARCKS这样的蛋白质 (MLP) 是尾再生的关键启动剂.
- 这一发现为了解其他物种的再生和潜在的产生提供了一个分子目标.
相关概念视频
Mechanism of Lamellipodia Formation
4.0K
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
4.0K
Cell Motility through Blebbing
2.7K
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Blebbing Through the Matrix
In multicellular...
2.7K
Mechanism of Filopodia Formation
3.4K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
3.4K
Whole Body Regeneration
4.4K
Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
4.4K
Role of Matrix Metalloproteases in Degradation of ECM
3.7K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
3.7K


