对于皮肤瘤的恶性进展,需要c-fos
E Saez1, S E Rutberg, E Mueller
1Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.
Cell
|September 8, 1995
概括
原型瘤基因c-FOS对于恶性瘤的发展至关重要. 缺乏C-FOS的小鼠患有良性瘤,但未能发展为恶性瘤,这表明它在癌症进展中的关键作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 原型瘤基因c-FOS是细胞信号通路中的关键核标,调节细胞生长,分化和转化.
- 了解c-FOS在致癌过程中的作用对于开发向癌症疗法至关重要.
研究的目的:
- 研究c-FOS基因在皮肤致癌的多步骤过程中的作用.
- 为了确定c-FOS缺乏能否防止良性瘤恶性转化.
主要方法:
- 在携带v-H-ras转基因的c-FOS缺乏的小鼠中使用了多阶段皮肤致癌模型.
- 在c-FOS淘汰和野生类型动物之间比较瘤发育和进展动力学.
- 采用了角质细胞移植实验来评估瘤发生过程中的细胞缺陷.
主要成果:
- 缺乏c-FOS的小鼠发展为良性瘤,其动力学与野生型小鼠相似.
- 缺乏c-FOS的小鼠中的乳头瘤表现出过度化,并未进展为恶性瘤.
- 移植实验表明,在缺乏c-FOS细胞的瘤发生过程中存在固有的细胞缺陷.
结论:
- 转录因子c-FOS是AP-1家族的成员,对于良性皮肤瘤的恶性转化是必需的.
- c-FOS在癌症的进展中起着至关重要的作用,而不是癌症的开始.
- 准c-FOS通路可能为预防瘤恶性瘤提供治疗策略.
相关概念视频
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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
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