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Proceedings 2017, 1(10), 1010; doi:10.3390/proceedings1101010

Investigation of Apoptotic Effects of Usnic Acid on Hepatocellular Carcinoma

1
Medical Biology Department, Faculty of Medicine, Uludag University, Gorukle, Bursa 16059, Turkey
2
Medical Biology Department, Faculty of Medicine, Sakarya University, Sakarya 54050, Turkey
Presented at the 2nd International Conference on Natural Products for Cancer Prevention and Therapy, Kayseri, Turkey, 8–11 November 2017.
*
Author to whom correspondence should be addressed.
Published: 15 November 2017
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Abstract

Hepatocellular carcinoma (HCC) ranks the sixth among common cancers in the world due to limited treatment option. In recent years, fungicides and lichen metabolites have gained importance in development of new generation chemotherapeutics. For this purpose, we aimed to investigate the cytotoxic and apoptotic effects of a lichen metabolite, usnic acid (UA), on HCC cells in the present study. After treatment with different concentrations (6.25–100 µM) of UA for 48 h, a significant decrease in the number of viable cells was determined in HCC cells. The HepG2 and SNU-449 cell viability decreased to 21.8% and 15.6% at the maximum concentration, respectively (p < 0.05). However cell viability ratio was 104.3% in HUVEC cells. Additionally, UA induced particularly late apoptosis in HCC cells in a dose-dependent manner. The percentage of apoptotic cells was significantly increased to 86.67% and 81.36% at 100 µM UA in HepG2 and SNU-449 cells, respectively. To confirm the apoptosis-inducing effect of UA, cells were stained with AO/EB and the morphological characteristic of apoptotic cell death were observed. In conclusion, UA displayed cytotoxic and apoptotic activity against human HCC cells without damaging control cells. Thus, we think that UA may be a suitable candidate as therapeutic agent for treatment of HCC.
Keywords: Hepatocellular carcinoma; usnic acid (UA); cytotoxicity; apoptosis Hepatocellular carcinoma; usnic acid (UA); cytotoxicity; apoptosis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yurdacan, B.; Egeli, Ü.; Eskiler, G.G.; Eryılmaz, I.E.; Çeçener, G.; Tunca, B. Investigation of Apoptotic Effects of Usnic Acid on Hepatocellular Carcinoma. Proceedings 2017, 1, 1010.

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