4.7 Article Proceedings Paper

Hydroxytyrosol and the Colonic Metabolites Derived from Virgin Olive Oil Intake Induce Cell Cycle Arrest and Apoptosis in Colon Cancer Cells

Journal

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 65, Issue 31, Pages 6467-6476

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.6b04933

Keywords

apoptosis; Caco-2; cell cycle; colorectal cancer; HT-29; hydroxytyrosol; metabolites

Funding

  1. Spanish Ministry of Education and Science [AGL2012-40144-C03-03]
  2. University of Lleida through the M.-C. Lopez de las Hazas grant

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After the sustained consumption of virgin olive oil (VOO), the unabsorbed native phenols (mainly hydroxytyrosol (HT)) are transformed into its catabolites in the intestine by microbials. The role of these catabolites in preventing colon cancer has not been. sufficiently investigated. This work aims to study the antiproliferative and apoptotic activities in colon (Caco-2; HT-29) cancer cell lines of the main catabolites detected in human feces (phenylacetic, phenylpropionic, hydroxyphenylpropionic, and dihydroxyphenylpropionic acids and catechol), after the sustained VOO intake. Additionally, an assessment of the ability of these colonic cells to metabolize the studied compounds was performed. The results showed that Err and phenylacetic and hydroxyphenylpropionic acids produce cell cycle arrest and promote apoptosis. HT-29 cells were more sensitive to phenol treatments than Caco-2. In synthesis, the results of the present study represent a good starting point for understanding the potential apoptotic and antiproliferative effects of VOO phenolic compounds, and their colonic metabolites.

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