通过过度表达一种编码潜在蛋白质激酶的G2特异性基因来诱导和维护甲基因
S A Osmani1, R T Pu, N R Morris
1Department of Pharmacology, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, Piscataway 08854.
Cell
|April 22, 1988
概括
过度表达aspergillus中nimA基因导致细胞快速分裂并保持凝聚的染色质,这表明nimA和线粒调节之间存在直接联系.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 假设G2特异性基因nimA在线粒调节中起作用.
- 了解nimA的功能对于破译控制细胞分裂的机制至关重要.
研究的目的:
- 为了研究nimA基因表达和阿斯伯吉洛斯菌中线粒调节之间的因果关系.
- 为了确定nimA过度生产对细胞循环和染色质凝聚的影响.
主要方法:
- 引入 nimA 基因的额外可诱导副本进入 Aspergillus.
- 在nimA过度表达后观察线粒调节和染色质状态.
- 对nimA基因的序列分析以识别其编码的蛋白质产品.
主要成果:
- nimA过度表达在不到一个细胞周期内诱导了线粒分裂.
- 过度产生的nimA使染色质保持在凝结状态.
- 这些影响甚至在细胞最初在S阶段被阻断时也持续存在.
- 序列分析显示,nimA编码了一个潜在的蛋白质激酶.
结论:
- nimA的表达因果关系与阿斯伯吉勒斯菌的线粒分裂调节有关.
- 由nimA介导的蛋白质酸化与线粒细胞的控制有关.
- nimA是细胞周期进展和染色质动态的关键调节者.
更多相关视频
12:02Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
Published on: June 6, 2017
08:33Combining Mitotic Cell Synchronization and High Resolution Confocal Microscopy to Study the Role of Multifunctional Cell Cycle Proteins During Mitosis
Published on: December 5, 2017
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.
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.
Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Mitogens and the Cell Cycle
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
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...
