Cancer Research Institute, BMC, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic. Luba.Hunakova@savba.sk. Cancer Research Institute, BMC, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic. Eva.Horvathova@savba.sk. Cancer Research Institute, BMC, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic. Karolina.Majerova@savba.sk. Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic. bobalp@vfu.cz. Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic. otevrelj@vfu.cz. Institute of Experimental Endocrinology, BMC, Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovak Republic. Julius.Brtko@savba.sk.