Related Experiment Video
Updated: Jul 20, 2026
09:32
Procedure and Key Optimization Strategies for an Automated Capillary Electrophoretic-based Immunoassay Method
Published on: September 10, 2017
Do wine polyphenols modulate p53 gene expression in human cancer cell lines?
G J Soleas1, D M Goldberg, L Grass
1Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.
Clinical Biochemistry
|August 28, 2001
Summary
Red wine polyphenols do not significantly alter p53 gene expression in cancer cells. This study suggests that the cancer-fighting properties of wine are unlikely to be linked to p53 modulation.
Area of Science:
- Molecular Biology
- Oncology
- Nutraceuticals
Background:
- The p53 gene is a crucial tumor suppressor and apoptosis inducer.
- Polyphenols in red wine are investigated for potential anticarcinogenic effects.
Purpose of the Study:
- To determine if red wine polyphenols modulate p53 expression in cancer cells.
- To assess the role of p53 modulation in the putative anticarcinogenic properties of wine polyphenols.
Main Methods:
- Human breast (MCF-7, T47D, MDA-MB-486) and colon (Colo 320 HSR) cancer cell lines were treated with four polyphenols (quercetin, catechin, resveratrol, caffeic acid) at varying concentrations.
- p53 concentrations were measured using time-resolved fluorescence immunoassay after 24-h treatment.
Main Results:
- Polyphenols did not affect p53 in T47D and MDA-MB-486 cells.
- MCF-7 cells showed minor, non-dose-responsive changes in p53 with caffeic acid, resveratrol, and catechin.
- Colo 320 HSR cells exhibited borderline significant, non-dose-responsive decreases in p53 with caffeic acid and resveratrol.
Conclusions:
- Observed p53 changes were small, inconsistent across cell lines, and lacked dose-dependency.
- Wine polyphenols' anticarcinogenic effects are unlikely mediated by p53 gene expression modulation.
Related Concept Videos
01:23Negative Regulator Molecules
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.
02:36DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:23Abnormal 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...
01:12Loss of Tumor Suppressor Gene Functions
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
01:19Interactions Between Signaling Pathways
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
02:36DNA Damage Can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...