细胞循环:现在活着,有色
Marcel Méchali1, Malik Lutzmann
1Institute of Human Genetics, CNRS, 41 rue de la Cardonille, 34396 Montpellier, France.
Cell
|February 13, 2008
概括
研究人员开发了一种新方法,可视追踪活细胞中的细胞周期阶段. 这种技术使用彩色蛋白质来区分细胞,改善了单独的线粒分裂的有限可见性.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 在活细胞中区分细胞周期阶段是具有挑战性的,只有线粒分裂是容易识别的.
- 现有的方法缺乏视觉区分其他关键细胞周期阶段的能力.
研究的目的:
- 开发一种用于在细胞周期不同阶段视觉区分细胞的新方法.
- 为了实时监测活细胞中细胞循环的进展.
主要方法:
- 利用由全域联酶SCF (Skp/Cullin/F-box) 和APC (阿纳酶促进复合体/循环体) 控制的彩色融合蛋白的表达.
- 工程细胞表达这些蛋白质,允许基于颜色的视觉差异化.
- 观察活细胞以验证该方法的有效性.
主要成果:
- 成功证明了在细胞周期的各个阶段可视区分细胞的能力.
- 彩色融合蛋白系统为不同阶段提供了清晰的视觉标记.
- 这种方法比仅观察线粒分裂的方法有显著的改进.
结论:
- 开发的方法允许在活细胞中直接视觉识别细胞周期阶段.
- 这种技术在细胞生物学研究,药物查和理解细胞增殖方面具有潜在的应用.
相关概念视频
01:04What is the Cell Cycle?
The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two stages: interphase and the mitotic phase. During interphase, the cell grows, performs its basic metabolic functions, copies its DNA, and prepares for mitotic cell division. Then, during mitosis and cytokinesis, the cell divides its nuclear and cytoplasmic materials, respectively. This generates two daughter cells that are identical to the original...
00:56What is the Cell Cycle?
The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two stages: the interphase and the mitotic phase. During interphase, the cell grows, performs its basic metabolic functions, copies its DNA, and prepares for mitotic cell division. Then, during mitosis and cytokinesis, the cell divides its nuclear and cytoplasmic materials, respectively. This generates two daughter cells that are identical to the original...
01:04What is the Cell Cycle?
The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two stages: interphase and the mitotic phase. During interphase, the cell grows, performs its basic metabolic functions, copies its DNA, and prepares for mitotic cell division. Then, during mitosis and cytokinesis, the cell divides its nuclear and cytoplasmic materials, respectively. This generates two daughter cells that are identical to the original...
00:56What is the Cell Cycle?
The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two stages: the interphase and the mitotic phase. During interphase, the cell grows, performs its basic metabolic functions, copies its DNA, and prepares for mitotic cell division. Then, during mitosis and cytokinesis, the cell divides its nuclear and cytoplasmic materials, respectively. This generates two daughter cells that are identical to the original...
01:28The Cell Cycle Control System
The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
02:11The Cell Cycle Control System
The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...