The determination of chemotherapeutic effects of oxaplatin and cisplatine in the prostate cancer cell lines administered gemcitabine

While prostate cancer takes first place in terms of prevalence among genitourinary cancers in men, it is second among cancer related deaths. Current researches are focused on combining targeted therapy with platinum-based chemotherapy for achieve additional avantages for spesific patient populations. Use of platin-based combination chemotherapy followed by surgical resection and/or radiation ensures the most benefit terapy. The aim of this study was to compare the effectiveness of platinum-based chemotherapeutics Cisplatin and Oxaliplatin used single or combination doses with Gemsitabine on apoptosis and cell proliferation of DU145 and PC3 human prostate cancer cell lines. The effects of drugs alone or combinations on cell viability were determined by WST-1 method. The mRNA expression levels of Caspase-3, Caspase-8, Caspase-9 genes were analyzed by real time polymerase chain reaction (RT-PCR). As a result, when evaluated the mRNA levels of Caspase-8 and Caspase-9 genes that play role intrinsic and extrinsic pathway, it was faund that Sisplatin induced apoptosis by intrinsic pathway, and Cisplatin induced apoptosis by extrinsic pathway. It is determined that, only Oxaliplatin or along with Gemsitabin combinations are more effective on apoptotic pathway than Sisplatin.