相关实验视频
Updated: Aug 9, 2026

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Measuring Caenorhabditis elegans Life Span on Solid Media
Published on: May 12, 2009
检查点蛋白控制了Caenorhabditis elegans中转移后细胞的存活率
Anders Olsen1, Maithili C Vantipalli, Gordon J Lithgow
1Buck Institute, 8001 Redwood Boulevard, Novato, CA 94945, USA.
概括
细胞检查点对于发育和抗压能力至关重要. 在C. elegans中禁用这些检查点基因揭示了它们在成年细胞生存和维护中的关键作用.
科学领域:
- 细胞生物学 细胞生物学
- 发育生物学是发展生物学.
- 遗传学 是一个遗传学.
背景情况:
- 细胞检查点是调节细胞分裂和应激反应的保存机制.
- 这些检查点对于应对DNA损伤和复制压力至关重要.
研究的目的:
- 研究检查点蛋白在全动物生理学中的作用.
- 了解检查点丧失对发育和成人体质维持的后果.
主要方法:
- 在线虫C. elegans. 中检查点基因的失活.
- 对细胞和生物水平的影响的分析.
主要成果:
- 检查点蛋白对于C. elegans的正常发育至关重要.
- 检查点功能的丧失会影响成年人的身体维护.
- 检查点蛋白对于转移后成体细胞的生存至关重要.
结论:
- 检查点蛋白具有超出细胞循环调节的作用,延伸到成人的体质维护.
- 这项研究强调了检查点完整性对长期细胞存活的重要性.
相关概念视频
Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
Negative Regulator Molecules
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
The 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...
Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
The 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...

