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      Potensi Senyawa Bioaktif Tanaman Tin (Ficus carica L.) sebagai Selective Estrogen Receptor Modulator (SERMs) secara In Silico

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      Date
      2021
      Author
      Kusmiarni, Amelia Dwi
      Puspita, Puspa Julistia
      Ambarsari, Laksmi
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      Abstract
      Kasus kanker payudara terbanyak didominasi jenis positif hormon reseptor, yang terkait pada keberadaan reseptor estrogen-α (ERα). Selective estrogen receptor modulator (SERMs) mampu mengikat ERα agar proliferasi terhambat. Tanaman tin memiliki aktivitas antikanker payudara positif estrogen, namun belum diketahui interaksi antagonisnya terhadap ERα. Penelitian ini bertujuan menentukan senyawa aktif yang berpotensi berperan sebagai antagonis terhadap reseptor ERα pada tanaman tin. Penambatan molekuler menggunakan AutoDock Vina. Jenis interaksi molekuler ligan-reseptor ditentukan melalui parameter energi afinitas (ΔG), konstanta inhibisi (Ki), dan binding site similarity (BSS). Hasil penambatan mendapatkan 13 ligan uji yang bersifat antagonis terhadap ERα. Potensi pengikatan antagonis terbaik terdapat pada ligan epikatekin (ΔG -8,4 kkal/mol dengan Ki 0,696 μM) dan apigenin (ΔG -8,1 kkal/mol dengan Ki 1,154 μM). Hasil penelitian menunjukkan bahwa epikatekin merupakan ligan dengan potensi terbaik dalam berikatan antagonis terhadap ERα berdasarkan energi afinitas, konstanta inhibisi, serta interaksi residu asam amino.
       
      Most of breast cancer cases is hormone receptor positive type of breast cancer. Selective estrogen receptor modulator (SERMs) can binding an estrogen receptor α (ERα) and inhibit proliferation. Fig has anticancer breast activity, but their antagonist’s interaction with the ERα still unknown. This study aims to determine the bioactive compounds on figs that potentially block the ERα as an antagonist. Molecular docking using AutoDock Vina. The type of ligand-receptor molecular interaction is determined by the parameters such as affinity energy (ΔG), inhibition constant (Ki), and binding site similarity (BSS). The result of molecular docking is 13 ligands from leaves, fruit, and latex fig that can block the ERα. Epicatechin (ΔG -8,4 kcal/mol with Ki 0,696 μM) and apigenin (ΔG -8,1 kcal/mol with Ki 1,154 μM) are compounds that have the best potential antagonist activities to ERα. The results showed that epicatechin is the test ligands with the best potential antagonist compound to the ERα based on affinity energy, inhibitory constant, and amino acid residues’s interaction.
       
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      http://repository.ipb.ac.id/handle/123456789/109972
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      • UT - Biochemistry [1466]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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