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Erschienen in: Breast Cancer Research and Treatment 3/2018

03.07.2018 | Preclinical study

Protein N-glycosylation alteration and glycolysis inhibition both contribute to the antiproliferative action of 2-deoxyglucose in breast cancer cells

verfasst von: Audrey Berthe, Marie Zaffino, Claire Muller, François Foulquier, Marine Houdou, Céline Schulz, Frédéric Bost, Elia De Fay, Sabine Mazerbourg, Stéphane Flament

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 3/2018

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Abstract

Purpose

Cancer cells often elicit a higher glycolytic rate than normal cells, supporting the development of glycolysis inhibitors as therapeutic agents. 2-Deoxyglucose (2-DG) is used in this context due to its ability to compete with glucose. However, many studies do not take into account that 2-DG inhibits not only glycolysis but also N-glycosylation. Since there are limited publications on 2-DG mechanism of action in breast cancer, we studied its effects in breast cancer cell lines to determine the part played by glycolysis inhibition and N-linked glycosylation interference.

Methods and Results

2-Deoxyglucose behaved as an anticancer agent with a similar efficiency on cell number decrease between the hormone-dependent MCF-7 and hormone-independent MDA-MB-231 breast cancer cells. It also interfered with the N-linked glycosylation process in both cell lines as illustrated by the migration profile of the lysosomal-associated membrane protein 2 and calumenin. These results are reinforced by the appearance of an abnormal Man7GlcNAc2 structure both on lipid-linked oligosaccharides and N-linked glycoproteins of 2-DG incubated MDA-MB-231 cells. Besides, 2-DG-induced a transient endoplasmic reticulum stress that was more sustained in MDA-MB-231 cells. Both changes were abrogated by mannose. 2-DG, even in the presence of mannose, decreased glycolysis in both cell lines. Mannose partially reversed the effects of 2-DG on cell numbers with N-linked glycosylation interference accounting for 37 and 47% of 2-DG anti-cancerous effects in MDA-MB-231 and MCF-7 cells, respectively.

Conclusion

N-linked glycosylation interference and glycolysis disruption both contribute to the anticancer properties of 2-DG in breast cancer cells.
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Metadaten
Titel
Protein N-glycosylation alteration and glycolysis inhibition both contribute to the antiproliferative action of 2-deoxyglucose in breast cancer cells
verfasst von
Audrey Berthe
Marie Zaffino
Claire Muller
François Foulquier
Marine Houdou
Céline Schulz
Frédéric Bost
Elia De Fay
Sabine Mazerbourg
Stéphane Flament
Publikationsdatum
03.07.2018
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 3/2018
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-018-4874-z

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