microRNA-210 overexpression inhibits tumor growth and potentially reverses gemcitabine resistance in pancreatic cancer
Resistance to first-line chemotherapies like gemcitabine contributes to high disease lethality in pancreatic cancer. By microarray and qRT-PCR, we observed significant downregulation of microRNA-210 in gemcitabine-resistant cells. The overexpression of microRNA-210 was toxic to gemcitabine-resistant...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2017
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| In: |
Cancer letters
Year: 2017, Jahrgang: 388, Pages: 107-117 |
| ISSN: | 1872-7980 |
| DOI: | 10.1016/j.canlet.2016.11.035 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1016/j.canlet.2016.11.035
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| Verfasserangaben: | Prince Saforo Amponsah, Pei Fan, Nathalie Bauer, Zhefu Zhao, Jury Gladkich, Joerg Fellenberg, Ingrid Herr |
MARC
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| 245 | 1 | 0 | |a microRNA-210 overexpression inhibits tumor growth and potentially reverses gemcitabine resistance in pancreatic cancer |c Prince Saforo Amponsah, Pei Fan, Nathalie Bauer, Zhefu Zhao, Jury Gladkich, Joerg Fellenberg, Ingrid Herr |
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| 520 | |a Resistance to first-line chemotherapies like gemcitabine contributes to high disease lethality in pancreatic cancer. By microarray and qRT-PCR, we observed significant downregulation of microRNA-210 in gemcitabine-resistant cells. The overexpression of microRNA-210 was toxic to gemcitabine-resistant cells and enhanced gemcitabine sensitivity. MicroRNA-210 overexpression induced caspase-3-mediated apoptosis, and inhibited colony formation. Computationally, ABCC5, a highly expressed gene in our array data, was identified as a potential target of microRNA-210 and the overexpression of ABCC5 in gemcitabine-resistant cells was confirmed by qRT-PCR. MicroRNA-210 overexpression reduced ABCC5 mRNA levels and inhibited a luciferase reporter expressing the ABCC5 3' UTR. The expression pattern of microRNA-210 and ABCC5 was mirrored in all of 5 pancreatic cancer cell lines used. Likewise, microRNA-210 transfection nearly totally inhibited tumor xenograft growth, proliferation and metastasis without obvious side effects in vivo. Also, an absence or low expression of microRNA-210 correlated to high ABCC5 expression in the majority of malignant patient tissues from a total of 101 patient tissues examined. Our observations provide at first glance, an important function for microRNA-210 in regulation of gemcitabine responsiveness by it's target gene ABCC5. | ||
| 650 | 4 | |a Adenocarcinoma | |
| 650 | 4 | |a Antimetabolites, Antineoplastic | |
| 650 | 4 | |a Carcinoma, Pancreatic Ductal | |
| 650 | 4 | |a Deoxycytidine | |
| 650 | 4 | |a Drug Resistance, Neoplasm | |
| 650 | 4 | |a Humans | |
| 650 | 4 | |a microRNA | |
| 650 | 4 | |a MicroRNAs | |
| 650 | 4 | |a Multi drug resistance | |
| 650 | 4 | |a Novel therapeutics | |
| 650 | 4 | |a Pancreatic cancer | |
| 650 | 4 | |a Transfection | |
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