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Proceedings 2017, 1(10), 1027; doi:10.3390/proceedings1101027

The Cytotoxic and Apoptotic Effects of Usnic Acid on Prostate Cancer versus Normal Cells

1
Medical Biology Department, Faculty of Medicine, Uludag University, 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

Abstract

Prostate cancer (PC) is the most common epithelium-derived solid tissue cancer in males in developed countries. Lichen seconder metabolites have an important potential as new generation chemotherapeutics. Therefore, we evaluated the cytotoxic and apoptotic effects of a lichen seconder metabolite, usnic acid (UA), on androgen receptor-positive PC cells (LNCaP) and also prostate normal cell line (RWPE-1) using WST-1 proliferation assay, acridine orange/ethidium bromide (AO/EB) staining, and annexin V analysis. The viability of LNCaP cells was significantly reduced (p < 0.05) after exposure to increasing concentrations of UA (6.25–150 µM). The LNCaP cell viability decreased to 34.14%, whereas RWPE-1 viability ratio was 109.79% at 150 µM UA for 48 h. UA induced especially early apoptosis in LNCaP cells and total apoptotic cell ratio was 69.01% at 150 µM for 48 h. Apoptotic morphology was also detected with AO/EB in LNCaP cells but not in RWPE-1 cells. Consequently, UA displayed more cytotoxic and apoptotic effects on PC cells than prostate normal cells. Thus, we suggest that UA might be one of the important lichen metabolites in further investigations for prostate cancer therapy.
Keywords: apoptosis; prostate cancer; usnic acid (UA); cytotoxicity apoptosis; prostate cancer; usnic acid (UA); cytotoxicity
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

Eryılmaz, I.E.; Eskiler, G.G.; Yurdacan, B.; Egeli, Ü.; Çeçener, G.; Tunca, B. The Cytotoxic and Apoptotic Effects of Usnic Acid on Prostate Cancer versus Normal Cells. Proceedings 2017, 1, 1027.

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