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Food Chem. 2018 Mar 1;242:378-388. doi: 10.1016/j.foodchem.2017.09.086. Epub 2017 Sep 18.

Comparison of the effect of chemical composition of anthocyanin-rich plant extracts on colon cancer cell proliferation and their potential mechanism of action using in vitro, in silico, and biochemical assays.

Author information

1
Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, USA. Electronic address: cmazews2@illlinois.edu.
2
Department of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, USA. Electronic address: katiejliang@gmail.com.
3
Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, USA. Electronic address: edemejia@illinois.edu.

Abstract

The objective was to compare the anti-proliferative effect of anthocyanin-rich plant extracts on human colon cancer cells and determine their mechanism of action. Eleven extracts were tested: red (RG) and purple grape, purple sweet potato, purple carrot, black and purple bean, black lentil (BL), black peanut, sorghum (SH), black rice, and blue wheat. HCT-116 and HT-29 inhibition correlated with total phenolics (r=0.87 and 0.77, respectively), delphinidin-3-O-glucoside concentration with HT-29 inhibition (r=0.69). The concentration inhibition fifty (IC50) for BL, SH, RG on HT-29 and HCT-116 cell proliferation ranged 0.9-2.0mg/mL. Extracts decreased expression of anti-apoptotic proteins (survivin, cIAP-2, XIAP), induced apoptosis, and arrested cells in G1. Anthocyanins exhibited tyrosine kinase inhibitory potential in silico and biochemically; cyanidin-3-O-glucoside had one of the highest binding affinities with all kinases, especially ABL1 (-8.5kcal/mol). Cyanidin-3-O-glucoside and delphinidin-3-O-glucoside inhibited EGFR (IC50=0.10 and 2.37µM, respectively). Cyanidin-3-O-glucoside was the most potent anthocyanin on kinase inhibition.

KEYWORDS:

Anthocyanins; Apoptosis; Black lentil; Colon cancer; Red grape; Sorghum; Tyrosine kinase

PMID:
29037704
DOI:
10.1016/j.foodchem.2017.09.086
[Indexed for MEDLINE]

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