Relationship between Antioxidant and Anticancer Activity of Trihydroxyflavones

Area of Science:

• Natural product chemistry
• Medicinal chemistry
• Pharmacology

Background:

• Plant polyphenols, specifically flavones, exhibit chemopreventive and anticancer properties.
• Trihydroxyflavones are a subclass of flavonoids with reported antioxidant and anticancer activities.

Purpose of the Study:

• To evaluate the antioxidant and anticancer activity of seventeen trihydroxyflavone derivatives.
• To investigate the correlation between antioxidant and anticancer effects of these compounds.

Main Methods:

• Anticancer activity was assessed using MTT assay against human lung (A549), breast (MCF-7), and brain (U87) cancer cell lines.
• Antioxidant activity was determined via the DPPH radical scavenging method.
• Structure-activity relationships were explored, focusing on the ortho-dihydroxy group in ring B.

Main Results:

• Thirteen of the seventeen trihydroxyflavones exhibited anticancer activity against at least one cell line.
• The compounds were most effective against MCF-7 (breast) and least effective against U87 (brain) cancer cells.
• A moderate correlation between anti-proliferative and antioxidant activity was observed for A549 and U87 cell lines, with 3',4',5-trihydroxyflavone 7 being the most potent.

Conclusions:

• Trihydroxyflavones demonstrate significant anticancer potential.
• Further research is needed to fully elucidate the structure-activity relationships of these compounds for anticancer drug development.