Brassica Extracts Prevent Benzo(a)pyrene-Induced Transformation by Modulating Reactive Oxygen Species and Autophagy

TL;DR

This study shows that extracts from broccoli sprouts and red cabbage can prevent cancer-like changes caused by a known carcinogen by reducing harmful molecules and boosting cell cleanup processes.

Contribution

The novel finding is that red cabbage extract can induce autophagy, a tumor-suppressing process, in addition to reducing carcinogen-induced damage.

Findings

Broccoli sprout and red cabbage extracts reduced benzo(a)pyrene-induced cell proliferation and reactive oxygen species.

Red cabbage extract induced autophagy in MCF10A cells.

The extracts may be useful in preventing carcinogen-induced transformation.

Abstract

Plants from the Brassicaceae family are characterized by their high content of glucosinolates (GSLs), whose hydrolysis products, isothiocyanates (ITC) or indole compounds, have been found to have anti-inflammatory, antioxidant and metabolic regulatory functions. In this work, we used a model of transformation using the MCF10A cell line, a non-tumorigenic breast fibrocystic disease cell line, treated with benzo(a)pyrene (B(a)P), a potent carcinogen known to induce the production of reactive oxygen species (ROS) and DNA damage. Broccoli sprout (BSE) or red cabbage aqueous (RCA) extracts were rich in ITC and indole compounds. Their use decreased B(a)P induced cellular proliferation and ROS production. in addition, RCA extract induced autophagy in MCF10A cells. Our results indicate a potential use of BSE or RCA for the prevention of carcinogen-induced transformation and of RCA as a method for autophagy, a tumor suppressor pathway, induction.

Figures