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Journal of Natural Medicines

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19.03.2018 | Original Paper

Anti-invasive effect of Cyclamen pseudibericum extract on A549 non-small cell lung carcinoma cells via inhibition of ZEB1 mediated by miR-200c

verfasst von: Ege Riza Karagur, Cennet Ozay, Ramazan Mammadov, Hakan Akca

Erschienen in: Journal of Natural Medicines | Ausgabe 3/2018

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Abstract

Scientists are increasingly focusing attention on natural products of plant origin for use as agents in cancer protection and treatment. Cyclamen L. tuber extracts contain saponin glycosides that have been shown to have anti-cancer and other biological activities. The epithelial-to-mesenchymal transition (EMT) is thought to enhance malignant tumour progress. The transcriptional repressor zinc-finger E-box binding homeobox 1 (ZEB1) is an important inducer of EMT in different human tumours and has recently been shown to boost invasion by tumour cells. In this study, we investigated the effects of endemic Cyclamen pseudibericum (CP) saponin-rich tuber extract on the capacity of non-small cell lung cancer line A549 cells to proliferate, invade and migrate and also examined the expression levels of several invasion–migration-related microRNAs (miRNAs) to identify those which directly targeted ZEB1. The cytotoxicity effect of the CP extract on the A549 cancer cells was determined by the luminometric method. The half-minimal (50%) inhibitory concentration dose in the A549 cells was determined to be 41.64 ± 2.35 µg/mL. Using the Matrigel invasion chamber system and the wound healing assay we observed that the CP extract suppressed the invasion and migration capacity of A549 cells, respectively. The expression of miRNAs in A549 cells was evaluated by real-time PCR. Our data showed that overexpression of miRNA miR-200c hindered the EMT by increasing the expression of E-cadherin and decreasing the expression of both N-cadherin and vimentin through the direct targeting of ZEB1. These findings suggest that the saponin-rich tuber extract of CP may have considerable anti-cancer properties in lung cancer. Further studies are required to examine in detail the molecular-based mechanism involved in the EMT process of the extract along with isolation and identification of active saponin components.

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Titel: Anti-invasive effect of Cyclamen pseudibericum extract on A549 non-small cell lung carcinoma cells via inhibition of ZEB1 mediated by miR-200c
verfasst von: Ege Riza Karagur
Cennet Ozay
Ramazan Mammadov
Hakan Akca
Publikationsdatum: 19.03.2018
Verlag: Springer Singapore
Erschienen in: Journal of Natural Medicines / Ausgabe 3/2018
Print ISSN: 1340-3443
Elektronische ISSN: 1861-0293
DOI: https://doi.org/10.1007/s11418-018-1204-z

Springer Medizin

Abstract

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