细胞再生中的细胞死亡和细胞循环:从平面动物和果虫学到的经验教训
Teresa Adell1, Francesc Cebrià1, Josep F Abril1
1Department of Genetics, Microbiology and Statistics, School of Biology and Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Av. Diagonal 643, Edifici Prevosti 1st floor, Barcelona 08028, Spain.
Seminars in cell & developmental biology
|March 26, 2025
概括
编程细胞死亡对于动物的组织修复和再生至关重要. 通过比较平面动物和虫,我们发现了规范细胞死亡以进行组织更新的保存和独特机制.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 编程细胞死亡对于动物物种的组织周转,修复和再生至关重要.
- 淡水平动物表现出了显著的再生,由新芽细胞和持续的细胞死亡支持.
- 德洛索菲拉 (Drosophila melanogaster) 是研究发育过程中的细胞死亡和恒温的关键模型.
研究的目的:
- 审查和综合当前关于平面动物和虫的编程细胞死亡的知识.
- 为了阐明细胞死亡在组织更新和再生中的保存和分离机制.
- 探索这些发现对更广泛的组织修复策略的相关性.
主要方法:
- 在平面动物和虫中进行编程细胞死亡的比较分析.
- 关于细胞死亡,再生和组织重塑研究的文献综述.
- 来自遗传,发育和细胞生物学研究的发现的综合.
主要成果:
- 细胞死亡对于平面动物和虫的组织重塑和修复至关重要.
- 平面生物利用连续细胞死亡进行再生,而花虫则在发育和变形中使用它.
- 尽管在再生能力上存在差异,但这两种模型都为细胞死亡调节提供了洞察力.
结论:
- 编程细胞死亡在组织更新和再生中发挥着基本作用,在物种之间具有共同和独特的机制.
- 对平面动物和虫的比较研究增强了我们对细胞死亡对组织修复的贡献的理解.
- 这些模型的见解对推进再生医学和理解组织维护有意义.
相关概念视频
01:33Whole Body Regeneration
3.3K
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;...
3.3K
01:19Overview of Regeneration and Repair
3.9K
Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...
Regeneration
All animals have varying degrees of...
3.9K
01:23Tissue Renewal without Stem Cells
1.7K
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
However, failure of such a system...
1.7K
01:27Molecular Factors Affecting Cell Division
2.9K
Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
2.9K