GLİOBLASTOMA’da 5-FU ve CELASTROL’ün SİTOTOKSİK ETKİSİ

Glioblastoma (GB), en malign ve en agresif beyin tümörüdür. Fenotipik ve genotipik açıdan yüksek heterojeniteye sahip Glioblastomanın kesin bir tedavi şekli bulunmamaktadır. Glioblastomada kemoterapi uygulamaları tedavide önemli bir yer tutmaktadır. Ancak kemoterapötik direnç tedavi başarısını düşürmektedir. Kemoterapötik direnci azaltmak ve etkili bir kemoterapi iç in bitkisel köken li antikanserojenik mo le küller eliştirilmeye çalışılmaktadır. Son yıllarda, önemli bir tedavi yaklaşımı olara k, bu mo lekü llerin tek uygulanmalarının yanında kemoterapötik ajanlarla kombine uygulamaları artmaktadır. Bu çalış mada, kemoterapötik ajan 5-Fluorourac il ile doğal bir bileşik olan Ce lastrol kombinasyonunun Glioblastomadaki sitotoksik etkisinin araştırılması amaç lan mıştır. MTT sitotoksisite testi sonucunda 2 µM Celastrolün, 50 µM 5-Fluorouracilin sitotoksik etkisini % 19 oranında arttırdığı, 0,5 ve 2 µM’lık Celastrolün 100 µM’lık 5-Fluorouracilin sitotoksik etkisini sırasıyla % 25 ve %37 oranında arttırdığı saptanmıştır. Bu çalış ma, tüm kanser tiplerinde 5-Fluorouracilin ile Celastrolün kombine etkisinin gösterildiğ i ilk çalış madır. Celastrolün 5-Fluorouracil ile birlikte kullanımının önemini ilk kez gösteren bu çalışma, yeni bir tedavi protokülünün geliştirilmesi amacıyla daha ileri düzey araştırmalara temel bir dayanak oluşturabilir.

THE CYTOTOXIC EFFECT of 5-FU AND CELASTRO L on GLIOBLASTO MA

Glioblastoma is the most malign and agressive brain tumor. Glioblastoma has heterogeneity in terms of genotypically and phenotypically and also    there   is    no    precise     treatment model. Chemotherapy has a big role in the treatment of glioblastoma but chemotherapeutic resistance decrease the effectiveness of treatment. Anticancerogenic molecules which derived from plants are devoloping with the purpose of decreasing chemotheraupatic resistance and effective treatment. In recent years, as an important treatment approach, the combination of these molecules with chemotherapeutic agents as well as single administration increases. In this study, it was aimed to investigate the cytotoxic effect of the combination of chemotherapeutic agent 5- Fluorouracil and a natural compound Celastrol in glioblastoma. As a result of the MTT cytotoxicity test, it was determined that Celastrol (2µM) has increased the cytotoxic effect of 5- Fluorouracil (50 µM) by 19%, the cytotoxic effect of 5-Fluorouracil (100 µM) has increased by celastrol (0.5 and 2 µM) in ratio of 25% and 37% , respectively. This is the first study to show the effects of 5-Fluorouracil and celastrol combination in all types of cancer. This study, which demonstrated the importance of the use of celastrol with 5-Fluorouracil fo r the first time, may provide a basis for further research in order to develop a new treatment protocol

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