Specific microRNA signatures in exosomes of triple-negative and HER2-positive breast cancer patients undergoing neoadjuvant therapy within the GeparSixto trial
Background: The focus of this study is to identify particular microRNA (miRNA) signatures in exosomes derived from plasma of 435 human epidermal growth factor receptor 2 (HER2)-positive and triple-negative (TN) subtypes of breast cancer (BC). Methods: First, miRNA expression profiles were determined...
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| Hauptverfasser: | , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10. October 2018
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| In: |
BMC medicine
Year: 2018, Jahrgang: 16 |
| ISSN: | 1741-7015 |
| DOI: | 10.1186/s12916-018-1163-y |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1186/s12916-018-1163-y Verlag, lizenzpflichtig, Volltext: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6178264/ 
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| Verfasserangaben: | Ines Stevic, Volkmar Müller, Karsten Weber, Peter A. Fasching, Thomas Karn, Frederic Marmé, Christian Schem, Elmar Stickeler, Carsten Denkert, Marion van Mackelenbergh, Christoph Salat, Andreas Schneeweiss, Klaus Pantel, Sibylle Loibl, Michael Untch, and Heidi Schwarzenbach |
MARC
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| 245 | 1 | 0 | |a Specific microRNA signatures in exosomes of triple-negative and HER2-positive breast cancer patients undergoing neoadjuvant therapy within the GeparSixto trial |c Ines Stevic, Volkmar Müller, Karsten Weber, Peter A. Fasching, Thomas Karn, Frederic Marmé, Christian Schem, Elmar Stickeler, Carsten Denkert, Marion van Mackelenbergh, Christoph Salat, Andreas Schneeweiss, Klaus Pantel, Sibylle Loibl, Michael Untch, and Heidi Schwarzenbach |
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| 520 | |a Background: The focus of this study is to identify particular microRNA (miRNA) signatures in exosomes derived from plasma of 435 human epidermal growth factor receptor 2 (HER2)-positive and triple-negative (TN) subtypes of breast cancer (BC). Methods: First, miRNA expression profiles were determined in exosomes derived from the plasma of 15 TNBC patients before neoadjuvant therapy using a quantitative TaqMan real-time PCR-based microRNA array card containing 384 different miRNAs. Forty-five miRNAs associated with different clinical parameters were then selected and mounted on microRNA array cards that served for the quantification of exosomal miRNAs in 435 BC patients before therapy and 20 healthy women. Confocal microscopy, Western blot, and ELISA were used for exosome characterization. Results: Quantification of 45 exosomal miRNAs showed that compared with healthy women, 10 miRNAs in the entire cohort of BC patients, 13 in the subgroup of 211 HER2-positive BC, and 17 in the subgroup of 224 TNBC were significantly deregulated. Plasma levels of 18 exosomal miRNAs differed between HER2-positive and TNBC subtypes, and 9 miRNAs of them also differed from healthy women. Exosomal miRNAs were significantly associated with the clinicopathological and risk factors. In uni- and multivariate models, miR-155 (p = 0.002, p = 0.003, respectively) and miR-301 (p = 0.002, p = 0.001, respectively) best predicted pathological complete response (pCR). Conclusion: Our findings show a network of deregulated exosomal miRNAs with specific expression patterns in exosomes of HER2-positive and TNBC patients that are also associated with clinicopathological parameters and pCR within each BC subtype. Electronic supplementary material - The online version of this article (10.1186/s12916-018-1163-y) contains supplementary material, which is available to authorized users. | ||
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| 700 | 1 | |a Weber, Karsten |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fasching, Peter A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Karn, Thomas |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Stickeler, Elmar |e VerfasserIn |4 aut | |
| 700 | 1 | |a Denkert, Carsten |e VerfasserIn |4 aut | |
| 700 | 1 | |a van Mackelenbergh, Marion |e VerfasserIn |4 aut | |
| 700 | 1 | |a Salat, Christoph |e VerfasserIn |4 aut | |
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