Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 489357
Title A combination of eicosapentaenoic acid-free fatty acid, epigallocatechin-3-gallate and proanthocyanidins has a strong effect on mTOR signaling in colorectal cancer cells
Author(s) Angelo, L. D'; Piazzi, G.; Pacilli, A.; Prossomariti, A.; Fazio, C.; Montanaro, L.; Graziani, G.; Fogliano, V.; Munarini, A.; Bianchi, F.; Belluzzi, A.; Bazzoli, F.; Ricciardiello, L.
Source Carcinogenesis 35 (2014)10. - ISSN 0143-3334 - p. 2314 - 2320.
DOI https://doi.org/10.1093/carcin/bgu173
Department(s) Food Quality and Design
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) activated protein-kinase - colon-cancer - liver metastasis - drug-resistance - carcinoma cells - in-vitro - growth - therapy - inhibition - mutations
Abstract Colorectal cancer (CRC) is one of the major causes of cancer death worldwide. The development of novel anti-CRC agents able to overcome drug resistance and/or off-target toxicity is of pivotal importance. The mammalian target of rapamycin (mTOR) plays a critical role in CRC, regulating protein translation and controlling cell growth, proliferation, metabolism and survival. The aim of this study was to explore the effect of a combination of three natural compounds, eicosapentaenoic acid-free fatty acid (EPA-FFA), epigallocatechin-3-gallate (EGCG) and proanthocyanidins (grape seed [GS] extract) at low cytotoxic concentrations on CRC cells and test their activity on mTOR and translational regulation. The CRC cell lines HCT116 and SW480 were treated for 24 h with combinations of EPA-FFA (0-150 mu M), EGCG (0-175 mu M) and GS extract (0-15 mu M) to evaluate the effect on cell viability. The low cytotoxic combination of EPA-FFA 150 mu M, EGCG 175 mu M and GS extract 15 mu M completely inhibited the mTOR signaling in HCT116 and SW480 cells, reaching an effect stronger than or comparable to that of the mTOR inhibitor Rapamycin in HCT116 or SW480 cells, respectively. Moreover, the treatment led to changes of protein translation of ribosomal proteins, c-Myc and cyclin D1. In addition, we found a reduction of clonal capability in both cell lines, with block of cell cycle in G(0)G(1) and induction of apoptosis. Our data suggest that the low cytotoxic combination of EPA-FFA, EGCG and GS extract, tested for the first time here, inhibits mTOR signaling and thus could be considered for CRC treatment.
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