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Published in: Journal of Translational Medicine 1/2016

Open Access 01-12-2016 | Research

Role of a polyphenol-enriched preparation on chemoprevention of mammary carcinoma through cancer stem cells and inflammatory pathways modulation

Authors: Tri Vuong, Jean-François Mallet, Maria Ouzounova, Sam Rahbar, Hector Hernandez-Vargas, Zdenko Herceg, Chantal Matar

Published in: Journal of Translational Medicine | Issue 1/2016

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Abstract

Background

Naturally occurring polyphenolic compounds from fruits, particularly from blueberries, have been reported to be significantly involved in cancer chemoprevention and chemotherapy. Biotransformation of blueberry juice by Serratia vaccinii increases its polyphenolic content and endows it with anti-inflammatory properties.

Methods

This study evaluated the effect of a polyphenol-enriched blueberry preparation (PEBP) and its non-fermented counterpart (NBJ), on mammary cancer stem cell (CSC) development in in vitro, in vivo and ex vivo settings. Effects of PEBP on cell proliferation, mobility, invasion, and mammosphere formation were measured in vitro in three cell lines: murine 4T1 and human MCF7 and MDA-MB-231. Ex vivo mammosphere formation, tumor growth and metastasis observations were carried out in a BALB/c mouse model.

Results

Our research revealed that PEBP influence cellular signaling cascades of breast CSCs, regulating the activity of transcription factors and, consequently, inhibiting tumor growth in vivo by decreasing metastasis and controlling PI3K/AKT, MAPK/ERK, and STAT3 pathways, central nodes in CSC inflammatory signaling. PEBP significantly inhibited cell proliferation of 4T1, MCF-7 and MDA-MB-231. In all cell lines, PEBP reduced mammosphere formation, cell mobility and cell migration. In vivo, PEBP significantly reduced tumor development, inhibited the formation of ex vivo mammospheres, and significantly reduced lung metastasis.

Conclusions

This study showed that polyphenol enrichment of a blueberry preparation by fermentation increases its chemopreventive potential by protecting mice against tumor development, inhibiting the formation of cancer stem cells and reducing lung metastasis. Thus, PEBP may represent a novel complementary alternative medicine therapy and a source for novel therapeutic agents against breast cancer.
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Metadata
Title
Role of a polyphenol-enriched preparation on chemoprevention of mammary carcinoma through cancer stem cells and inflammatory pathways modulation
Authors
Tri Vuong
Jean-François Mallet
Maria Ouzounova
Sam Rahbar
Hector Hernandez-Vargas
Zdenko Herceg
Chantal Matar
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Journal of Translational Medicine / Issue 1/2016
Electronic ISSN: 1479-5876
DOI
https://doi.org/10.1186/s12967-016-0770-7

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