概括
维持c-myc瘤基因表达可以防止Friend类白血病 (F-MEL) 细胞分化. 持续的c-myc表达抑制了分化过程,突出显示了它在红色素前体发展中的关键作用.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 朋友小鼠红血球白血病 (F-MEL) 细胞是红色素前体,在体外分化.
- F-MEL细胞分化涉及c-myc瘤基因转录的双相调节.
- 早期c-myc转录水平在诱导时下降,然后在分化过程中恢复和下降.
研究的目的:
- 为了研究c-myc表达和F-MEL终端分化之间的关系.
- 为了确定改变早期c-myc转录波动是否会影响F-MEL细胞分化能力.
主要方法:
- 用小鼠c-myc互补DNA构建了一个可放大等离子体向量.
- 稳定地将载体引入受体F-MEL细胞.
- 分析了对诱导剂的反应中的c-myc转录水平和F-MEL差异化.
主要成果:
- 外源c-myc序列被转录到F-MEL细胞中.
- 外源c-myc转录水平尽管诱导,但仍然稳定.
- 持续的c-myc表达完全或部分抑制了F-MEL分化.
结论:
- 在c-myc转录水平的早期波动对于F-MEL终端分化至关重要.
- 持续的c-myc表达干扰了红色素前体的分化途径.
相关概念视频
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...
Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Mouse Models of Cancer Study
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
Somatic cells are...
Cytomegalovirus Disease
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...


