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Published on: June 30, 2022
Tea Polyphenols and Prevention of Epigenetic Aberrations in Cancer
1Department of Medical Biotechnology, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Gangtok, Sikkim, India.
Abstract:
Tea polyphenols are secondary metabolites of tea plants and are well known for beneficial health effects. They can protect from a variety of illnesses including cancers. Tea polyphenols can prevent cancer by modulating epigenetic aberrations taking place in DNA methylation, histone modifications, and micro-RNAs. By altering these epimutations, they regulate chromatin dynamics and expression of genes those induce or suppress cancer formation. However, majority of the studies in existing literature are carried out for green tea polyphenols rather than black tea polyphenols despite the fact that black tea is the most commonly consumed form of tea (78%) followed by green tea (20%) and other forms of tea. Research findings indicate that tea polyphenols may be potential source from which drugs with less side effects and affordable price can be developed.
Insights
Tea polyphenols, compounds found in tea, show promise in cancer prevention by influencing epigenetic changes. Further research into black tea polyphenols could lead to affordable cancer drugs with fewer side effects.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Tea polyphenols are bioactive compounds in tea plants with recognized health benefits.
- These compounds are known to offer protection against various diseases, including cancers.
- Epigenetic mechanisms like DNA methylation, histone modifications, and micro-RNAs are implicated in cancer development.
Purpose of the Study:
- To explore the role of tea polyphenols in cancer prevention through epigenetic modulation.
- To highlight the underrepresentation of black tea polyphenols in existing research compared to green tea polyphenols.
- To assess the potential of tea polyphenols as a source for developing novel, affordable cancer therapeutics with minimal side effects.
Main Methods:
- Review of existing scientific literature on tea polyphenols and their effects on epigenetic aberrations.
- Analysis of studies focusing on DNA methylation, histone modifications, and micro-RNA regulation by tea polyphenols.
- Comparative assessment of research prevalence for green tea versus black tea polyphenols.
Main Results:
- Tea polyphenols can prevent cancer by modulating key epigenetic mechanisms, including DNA methylation, histone modifications, and micro-RNAs.
- These modulations influence chromatin dynamics and the expression of genes critical for cancer initiation and suppression.
- Black tea polyphenols, despite black tea's high consumption rate, are less studied than green tea polyphenols.
Conclusions:
- Tea polyphenols, particularly from black tea, represent a promising avenue for cancer prevention strategies.
- Targeting epigenetic aberrations with tea polyphenols offers a potential pathway for developing cancer drugs.
- Future research should focus more on black tea polyphenols to unlock their full therapeutic potential for affordable cancer treatment.
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