SİKLOOKSİJENAZ İNHİBİTÖRLERİ OLARAK BAZI 4,5-DİHİDRO-1H-PİRAZOL TÜREVLERİ ÜZERİNDE MOLEKÜLER DOKİNG ÇALIŞMALARI

Abstract

Amaç: Antiinflamatuvar etkileri olduğu düşünülen bazı 4,5-dihidro-1H-pirazol türevlerinin siklooksijenaz 1(COX-1) ve siklooksijenaz 2 (COX-2) enzimleri ile etkileşimlerini incelemek amacıyla bu enzimler üzerinde docking çalışmaları yapılmıştır.

Gereç ve Yöntem: Doking çalışmaları için protein veri bankasından, COX-1 enzimi için (3KK6) ve COX-2 enzimi için (3LN1) seçilmiştir. Ligand ve proteinin yapıları Autodock 1.5.6 kullanılarak hazırlanmıştır. Bağlanma afinitesini belirlemek için AutoDock Vina, doking sonuçlarını analiz etmek ve görüntülemek için ise Discovery Studio 3.5 kullanılmıştır.

Sonuç ve Tartışma: COX-1 ve COX-2 enzimleri üzerine yapılan doking işlemi sonucunda 4,5-dihidro-1H-pirazol türevlerinin her iki enzimle de etkileşime girdiği görüldü. 4,5-Dihidro-1H-pirazol halkasının COX-2 enzimi ile etkileşimde önemli olduğu bulundu. Yapıya hacimli bir grubun dahil edilmesi, COX-1 enzimi ile etkileşimde herhangi bir soruna neden olmazken, COX-2 enzimi ile bazı etkileşimleri ortadan kaldırdı. Enzimlerin inhibisyon özelliklerinin daha iyi aydınlatılabilmesi için bu çalışmanın in vitro ve in vivo COX inhibisyon testleri ile desteklenmesi gerekmektedir.      

Keywords

• Siklooksijenaz 1
• siklooksijenaz 2
• 4
• 5-dihidro-1H-pirazol
• inflamasyon
• moleküler doking
• 4,5-dihidro-1H-pirazol

MOLECULAR DOCKING STUDIES ON SOME 4,5-DIHYDRO-1H-PYRAZOLE DERIVATIVES AS CYCLOOXYGENASE INHIBITORS

Abstract

Objective: To examine the interactions of some 4,5-dihydro-1H-pyrazole derivatives, which are thought to have antiinflammatory effects, with cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes, docking studies were carried out on these enzymes.

Material and Method: COX-1 enzyme (3KK6) and COX-2 enzyme (3LN1) were selected from the protein data bank for docking studies. The ligand and protein constructs were prepared using Autodock 1.5.6. AutoDock Vina was used to determining the binding affinity, and Discovery Studio 3.5 was utilised to analyse and display the docking results.

Result and Discussion: As a result of the docking process on COX-1 and COX-2 enzymes, 4,5-Dihydro-1H-pyrazole derivatives were observed to interact with both enzymes. The 4,5-dihydro-1H-pyrazole ring was found to be important in its interactions with the COX-2 enzyme. The inclusion of a bulky group in the construct did not cause any problems in interaction with the COX-1 enzyme but eliminated some interactions with the COX-2 enzyme. To better elucidate the inhibition properties of enzymes, this study should be supported by in vitro and in vivo COX inhibition tests.

Keywords

• Cyclooxygenase-1
• cyclooxygenase-2
• 4
• 5-dihydro-1H-pyrazole
• inflammation
• molecular docking
• 4,5-dihydro-1H-pyrazole

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