Related Experiment Video
Updated: Jul 21, 2025
12:19
Analysis of Cell Cycle Position in Mammalian Cells
Published on: January 21, 2012
60.5K
E2F family play important roles in tumorigenesis
Fei-Fei Li1, Yun Wang1, Ji-Hai Gu1,2
1School of Life Sciences, Hebei University, Baoding 071002, China.
Yi Chuan = Hereditas
|July 28, 2023
Summary
E2F transcription factors are crucial in cell regulation and tumorigenesis. This study reveals their altered expression and mutations in tumors, suggesting E2Fs as potential diagnostic markers and therapeutic targets for cancer.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Transcription factors regulate gene expression, impacting cell processes.
- E2F family transcription factors (E2Fs) are vital for cell proliferation but their role in cancer is not fully understood.
Purpose of the Study:
- To investigate the expression, function, mutation, and evolutionary characteristics of E2Fs in high-incidence tumors.
- To explore E2Fs as potential diagnostic markers and therapeutic targets in oncology.
Main Methods:
- Integrated analysis of transcriptome, mutation, and protein-protein interaction data from TCGA database for 10 high-incidence tumors.
- Phylogenetic analysis of E2F family across species.
Main Results:
- E2F1 and E2F7 were consistently upregulated in tumor samples.
- E2Fs are involved in cell cycle and aging pathways; E2F1 showed extensive protein interactions.
- Genetic mutations in E2Fs varied by tumor type and sex, with gene amplification being most common.
- E2Fs are conserved across species and show evolutionary gene expansion.
Conclusions:
- This study elucidates E2F expression patterns, mutation profiles, and evolutionary trends in Chinese high-incidence tumors.
- E2F family transcription factors show promise as novel diagnostic markers for cancer.
- Findings provide a foundation for developing targeted anti-cancer therapies.
More Related Videos
Related Concept Videos
01:22Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K
02:38Mitogens and the Cell Cycle
6.6K
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...
6.6K
01:23Negative Regulator Molecules
35.5K
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.
35.5K
02:23Abnormal Proliferation
4.6K
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...
4.6K
02:23Master Transcription Regulators
6.9K
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...
6.9K
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
7.5K
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...
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...
7.5K