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      Penambatan Molekul Kuersetin dan Turunan Katekin sebagai Inhibitor TNF Alpha secara In Silico

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      Date
      2021
      Author
      Iryanti, Ananda Dwi
      Hasim
      Ambarsari, Laksmi
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      Abstract
      Diabetes Melitus (DM) terbagi menjadi dua jenis yaitu diabetes tipe 1 dan tipe 2. DM tipe 2 dapat terjadi karena adanya sel-sel tubuh resisten terhadap insulin. Senyawa antioksidan dapat menetralisir radikal bebas sehingga dapat mencegah penyakit degeneratif DM. Kuersetin dan katekin merupakan salah satu contoh senyawa antioksidan yang dapat memberikan efek antidiabetik. Senyawa tersebut sebagai ligan dan TNF-α sebagai reseptor. TNF-α merupakan mediator yang secara kritis terlibat dalam pengembangan resistensi insulin dan patogenesis DM tipe 2. Penelitian ini bertujuan mempelajari interaksi molekuler dengan teknik penambatan molekul serta menguji senyawa katekin dan kuersetin dalam menginhibisi TNF-α untuk memperbaiki sensitivitas membran sel terhadap insulin. Ligan uji yang digunakan epikatekin galat, epigalokatekin, katekin, epikatekin, epigalokatekin, dan kuersetin. Penelitian ini menggunakan perangkat lunak seperti AutoDock Vina, MarvinView, Ligplot+, PROCHECK, dan Discovery Studio Visualizer. Hasil terbaik yang diperoleh yaitu senyawa epikatekin galat memiliki energi afinitas sebesar -7.9 kkal/mol dan nilai konstanta inhibisi sebesar 1.595 μM. Residu asam amino yang berperan dalam sisi pengikatan ligan terhadap reseptor yaitu Tyr119 dan Tyr151. Simpulan dari penelitian ini senyawa turunan katekin dan kuersetin memiliki potensi yang baik dalam menurunkan aktivitas TNF-α yang menyebabkan peningkatan pemasukan glukosa ke dalam sel melalui mekanisme inhibisi reseptor TNF-α.
       
      Diabetes Melitus (DM) is divided into two types DM type 1 and type 2. T2DM can occur due to the presence of body cells resistant to insulin. Antioxidant compounds can neutralize free radicals to prevent degenerative diseases of DM. Quercetin and catechins are one example of antioxidant compounds that can give an antidiabetic effect. These compounds are as ligands and TNF-α as receptors. TNF-α is a mediator that is critically involved in the development of insulin resistance and pathogenesis T2DM. This study aims to study molecular interactions with molecular docking techniques and to examine catechins and quercetin compounds in inhibiting TNF-α to improve cell membrane sensitivity to insulin. The test ligands used were epicatechin gallate, epigalocatekin, catechin, epicatechin, epigalocatekin, and quercetin. This research uses software such as AutoDock Vina, MarvinView, Ligplot +, PROCHECK, and Discovery Studio Visualizer. The best results obtained were that the epicatechin gallate compound had an energy affinity of -7.9 kcal / mol and inhibition constant value of 1.595 μM. The amino acid residue that plays a role in the binding of ligands to the receptor is Tyr119 and Tyr151. The conclusion of this study that catechin and quercetin derivatives have good potential in reducing TNF-α activity which causes an increase in glucose entry into cells through the mechanism of receptor inhibition.
       
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      http://repository.ipb.ac.id/handle/123456789/106982
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      • UT - Biochemistry [1466]

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