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Published in: Journal of Experimental & Clinical Cancer Research 1/2020

Open Access 01-12-2020 | Breast Cancer | Research

New insights in gene expression alteration as effect of doxorubicin drug resistance in triple negative breast cancer cells

Authors: Cristina Alexandra Ciocan-Cartita, Ancuta Jurj, Oana Zanoaga, Roxana Cojocneanu, Laura-Ancuta Pop, Alin Moldovan, Cristian Moldovan, Alina Andreea Zimta, Lajos Raduly, Cecilia Pop-Bica, Mihail Buse, Liviuta Budisan, Piroska Virag, Alexandru Irimie, Sandra Martha Gomes Dias, Ioana Berindan-Neagoe, Cornelia Braicu

Published in: Journal of Experimental & Clinical Cancer Research | Issue 1/2020

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Abstract

Background

Triple negative breast cancer (TNBC) is a heterogeneous disease with aggressive behavior and an unfavorable prognosis rate. Due to the lack of surface receptors, TNBC must be intensely investigated in order to establish a suitable treatment for patients with this pathology. Chemoresistance is an important reason for therapeutic failure in TNBC.

Method

The aim of this study was to investigate the effect of doxorubicin in TNBC cell lines and to highlight cellular and molecular alterations after a long exposure to doxorubicin.

Results

The results revealed that doxorubicin significantly increased the half maximal inhibitory concentration (IC50) values at P12 and P24 compared to parenteral cells P0. Modifications in gene expression were investigated through microarray technique, and for detection of mutational pattern was used Next Generation Sequencing (NGS). 196 upregulated and 115 downregulated genes were observed as effect of multiple dose exposure, and 15 overexpressed genes were found to be involved in drug resistance. Also, the presence of some additional mutations in both cell lines was observed.

Conclusion

The outcomes of this research may provide novel biomarkers for drug resistance in TNBC. Also, this activity can highlight the potential mechanisms associated with drug resistance, as well as the potential therapies to counteract these mechanisms.
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Metadata
Title
New insights in gene expression alteration as effect of doxorubicin drug resistance in triple negative breast cancer cells
Authors
Cristina Alexandra Ciocan-Cartita
Ancuta Jurj
Oana Zanoaga
Roxana Cojocneanu
Laura-Ancuta Pop
Alin Moldovan
Cristian Moldovan
Alina Andreea Zimta
Lajos Raduly
Cecilia Pop-Bica
Mihail Buse
Liviuta Budisan
Piroska Virag
Alexandru Irimie
Sandra Martha Gomes Dias
Ioana Berindan-Neagoe
Cornelia Braicu
Publication date
01-12-2020
Publisher
BioMed Central
Published in
Journal of Experimental & Clinical Cancer Research / Issue 1/2020
Electronic ISSN: 1756-9966
DOI
https://doi.org/10.1186/s13046-020-01736-2

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