c-fos表达是不够的,也不必有 monomyelocytes 到巨细胞的分化
Cell
|May 23, 1986
概括
这就是c-fos基因.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 基因表达规范 基因表达规范
背景情况:
- 在人类白血病细胞分化成巨细胞过程中,c-fos基因的快速和暂时表达.
- 了解c-fos表达的调节对于理解细胞分化过程至关重要.
研究的目的:
- 在巨细胞分化过程中研究控制c-fos基因表达的调节机制.
- 确定c-fos表达在U-937和HL-60白血病细胞分化中的作用.
主要方法:
- 在U-937和HL-60细胞中分析c-fosmRNA水平和稳定性.
- 使用各种刺激 (血清,二甲醇,TPA) 诱导差异化.
- 对细胞分化到巨细胞的评估.
主要成果:
- c-fos表达主要控制在转录水平.
- c-fos mRNA的半衰期很短 (不到30分钟).
- 循环赫西米德对c-fos的超诱导是由于mRNA稳定.
- 高c-fos表达并不总是导致巨细胞的分化.
- 在抗TPA的HL-60变种中,巨细胞的分化可以在没有可检测的c-fos表达的情况下发生.
结论:
- 调节c-fos基因表达是复杂的,主要发生在转录水平.
- 虽然c-fos在分化过程中短暂地表达,但其作用在所有情况下对巨细胞分化并不重要.
- 在观察到的c-fos.的"超诱导"中,mRNA稳定性起着重要的作用.
相关概念视频
Master Transcription Regulators
6.1K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.1K
Differentiation of Common Myeloid Progenitor Cells
3.1K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
3.1K


