Abstract Title:

Myricitrin fromExhibits Inhibitory Effect on DNA-Topoisomerase Type IIand Protective Effect AgainstDoxorubicin-Induced Mutagenicity.

Abstract Source:

J Med Food. 2021 Mar ;24(3):273-281. Epub 2020 Jun 16. PMID: 32543997

Abstract Author(s):

Renata Trentin Perdomo, Camila Pineze Defende, Patrick da Silva Mirowski, Talita Vilalva Freire, Simone Schneider Weber, Walmir Silva Garcez, Zaira da Rosa Guterres, Maria de Fátima Cepa Matos, Fernanda Rodrigues Garcez

Article Affiliation:

Renata Trentin Perdomo


Flavonoids-compounds abundant in balanced daily diets-have been extensively investigated for biological activity. The pronounced antiproliferative effects of flavonoids have prompted studies to elucidate their mode of action against tumor cells. The anticancer properties of myricetin, a 3',4',5'-tri-hydroxylated flavonol, have been confirmed for a number of neoplasms, but myricitrin, its 3--rhamnoside derivative found in fruits and other parts of edible plants, has been scarcely investigated as a chemopreventive agent. This study evaluated the antiproliferative potential of myricitrin obtained from(Combretaceae) against MCF7 (breast), PC-3 (prostate), HT-29 (colon), 786-0 (kidney), and HL-60 (acute promyelocytic leukemia) cancer cell lines, using the sulforhodamine B and tetrazolium salt assays. Myricitrin proved most effective in inhibiting growth of HL-60 cells (GI = 53.4 mol·L), yet showed weak antiproliferative activity against other cell lines. Possible cytotoxic mechanisms involving inhibition of topoisomerases I and IIby myricitrin were also evaluated, revealing inhibitory activity only against topoisomerase II. The results suggested that topoisomerase IIinhibition is the probable mechanism responsible for the antiproliferative activity of myricitrin.mutagenicity by myricitrin and its possible antimutagenic effect on doxorubicin-induced DNA damage were also investigated by performing the somatic mutation and recombination test (SMART) on. Myricitrin proved nonmutagenic to the offspring of standard (ST) and high-bioactivation (HB) crosses, while cotreatments with doxorubicin revealed the antimutagenic properties of myricitrin, even under conditions of high metabolic activation.

Print Options

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2022 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.