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Published in: BMC Complementary Medicine and Therapies 1/2016

Open Access 01-12-2016 | Research article

Methylferulate from Tamarix aucheriana inhibits growth and enhances chemosensitivity of human colorectal cancer cells: possible mechanism of action

Authors: Mohamed Salah I. Abaza, Mohammad Afzal, Raja’a J. Al-Attiyah, Radhika Guleri

Published in: BMC Complementary Medicine and Therapies | Issue 1/2016

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Abstract

Background

Natural products are valuable sources for anticancer agents. In the present study, methylferulate (MF) was identified for the first time from Tamarix aucheriana. Spectral data were used for identification of MF. The potential of MF to control cell growth, cell cycle, apoptosis, generation of reactive oxygen species (ROS), cancer cell invasion, nuclear factor kappa B (NFkB) DNA-binding activity and proteasomal activities, as well as the enhancement of chemosensitivity in human colorectal cancer cells, were evaluated. The possible molecular mechanism of MF’s therapeutic efficacy was also assessed.

Methods

Column chromatography and spectral data were used for isolation and identification of MF. MTT, immunofluorescence, flow cytometry, in vitro invasion, fluoremetry, EIA and Real time qPCR were used to measure antiproliferative, chemo-sensitizing effects and other biochemical parameters.

Results

MF showed a dose-dependent anti-proliferative effect on colorectal cancer cells (IC50 = 1.73 – 1.9 mM) with a nonsignificant cytotoxicity toward normal human fibroblast. Colony formation inhibition (P ≤ 0.001, 0.0001) confirmed the growth inhibition by MF. MF arrested cell cycle progression in the S and G2/M phases; induced apoptosis and ROS generation; and inhibited NF-kB DNA-binding activity, proteasomal activities and cell invasion in colorectal cancer cells. MF up-regulated cyclin-dependent kinase inhibitors (p19 INK4D, p21WAF1/CIP1, p27KIP1), pro-apoptotic gene expression (Bax, Bad, Apaf1, Bid, Bim, Smac) and caspases (caspase 2, 3, 6, 7, 8, 9). Moreover, MF down-regulated cyclin-dependent kinases (Cdk1, Cdk2) and anti-apoptotic gene expression (c-IAP-1, c-IAP-2, Bcl2,FLIP). In addition, MF differentially potentiated the sensitivity of colorectal cancer cells to standard chemotherapeutic drugs.

Conclusion

MF showed a multifaceted anti-proliferative and chemosensitizing effects. These results suggest the chemotherapeutic and co-adjuvant potential of MF.
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Metadata
Title
Methylferulate from Tamarix aucheriana inhibits growth and enhances chemosensitivity of human colorectal cancer cells: possible mechanism of action
Authors
Mohamed Salah I. Abaza
Mohammad Afzal
Raja’a J. Al-Attiyah
Radhika Guleri
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2016
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-016-1358-8

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