抗癌研究In Silico类固醇化合物对活动使用雌激素阿尔法(ER -α)的胸部

Nurlelasari Nurlelasari, Almas Widyana, Euis Julaeha, Arip Hardianto, Desi Harneti Putri Huspa, Rani Maharani, Trisna Mayanti, Darwati Darwati, M. Hanafi, Unang Supratman
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Pemodelan struktur tiga dimensi (3D) senyawa steroid dilakukan dengan memperhatikan keadaan terprotonasinya pada pH 7,4. </span><span lang=\"IT\">Metode <em>in silico</em> divalidasi melalui penambatan ulang struktur kristal ER-</span><span>α</span><span lang=\"IT\">, hingga diperoleh </span><span lang=\"IT\">nilai RMSD < 2 Å, dengan program AutoDock 4.2.6. Dengan program yang sama, senyawa-senyawa steroid ditapis dengan metode penambatan molekul. Hasil penapisan menghasilkan nilai energi bebas dari kedua senyawa steroid yaitu -10,08 kkal/mol (7</span><span>α</span><span lang=\"IT\">-hidroksi-</span><span>β</span><span lang=\"IT\">-sitosterol) dan -10,75 kkal/mol (stigmast-5-en-3</span><span>β</span><span lang=\"IT\">-ol), yang nilainya lebih baik dari estradiol (-9,62 kkal/mol), sebagai ligan alami ER-</span><span>α</span><span lang=\"IT\">. 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引用次数: 0

摘要

乳癌是全球仅次于肺癌的妇女死于乳癌的第二大原因。类固醇是一种活跃的化合物,其中有一种从Chisocheton属中分离出来,该属据报道对MCF-7乳腺癌细胞有活动。本研究的目的是了解互动类固醇化合物对雌激素的阿尔法(ER -α)通过in silico方法,即确保分子。类固醇的三维结构(3D)建模是在pH 7.4的可行性上进行的。in silico方法重新验证通过确保晶体结构ER -α,直到获得RMSD < 2 A,与AutoDock计划4 . 2.6。在同样的程序中,类固醇化合物被用于分子增强方法。结果penapisan第二的自由能量价值类固醇化合物即-10,08 kkal / mol(α7 -hidroksi -β-sitosterol)和-10,75 kkal / mol (stigmast-5-en-3β-ol),价值更好的雌二醇(-9,62 kkal / mol),天然配体ER -α。这两种化合物潜在menginhibisi阿尔法,雌激素在哪里可以找到stigmast-5-en-3化合物β-ol具有更大的潜力,因为能量自由价值更低。这表明,对化合物结构的修改能够改变配体和受体之间的能量键和相互作用。In Silico Study of类固醇化合物用雌激素活动反对胸脯巨蟹座阿尔法(ER -α)。乳房巨蟹座是第二世界世界,因为癌症在妇女死后是肺巨蟹座。类固醇是一组活跃的化合物,由一种与MCF-7胃巨蟹座的作用属分离出来。这个研究aimed interaction活动》到个重大compounds反对阿尔法类固醇雌激素受体(ER -α)无论是in silico方法把mlecular对接。三维类固醇复合结构的模型是在pH值7.4时考虑到毒液的州表现出来的。in silico方法是validated由redocking ER -α的水晶vesalius直到obtaining an RMSD价值< 2个A,用《AutoDock 4个项目2。6。类固醇化合物被同一程序截断了分子船坞的方法。free energy价值观》放映results秀那类固醇compounds是10。08 kcal / mol(α7 -hydroxy -β-sitosterol)和10。75 kcal / mol (stigmast-5-en-3β-ol),这是比强雌二醇(- 9 . 62 kcal / mol)美国本土ligand的ER -α。两者的这些compounds可以inhibit《stigmast-5-en-3阿尔法雌激素受体,在哪种β-ol化合物有下”(free energy a大的潜在的,因为它的价值。这发现的化合物结构的变化本质可能改变流动性和买断之间的能量和相互作用。
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Studi In Silico Aktivitas Senyawa Steroid Terhadap Antikanker Payudara Menggunakan Estrogen Alfa (ER-α)

Kanker payudara merupakan penyebab kedua terbanyak kematian pada wanita akibat kanker setelah kanker paru-paru di seluruh dunia. Steroid merupakan kelompok senyawa aktif yang diantaranya berhasil diisolasi dari genus Chisocheton yang dilaporkan memiliki aktivitas melawan sel kanker payudara MCF-7. Tujuan penelitian ini adalah untuk mengetahui interaksi senyawa steroid terhadap estrogen alfa (ER-α) melalui metode in silico, yaitu penambatan molekul. Pemodelan struktur tiga dimensi (3D) senyawa steroid dilakukan dengan memperhatikan keadaan terprotonasinya pada pH 7,4. Metode in silico divalidasi melalui penambatan ulang struktur kristal ER-α, hingga diperoleh nilai RMSD < 2 Å, dengan program AutoDock 4.2.6. Dengan program yang sama, senyawa-senyawa steroid ditapis dengan metode penambatan molekul. Hasil penapisan menghasilkan nilai energi bebas dari kedua senyawa steroid yaitu -10,08 kkal/mol (7α-hidroksi-β-sitosterol) dan -10,75 kkal/mol (stigmast-5-en-3β-ol), yang nilainya lebih baik dari estradiol (-9,62 kkal/mol), sebagai ligan alami ER-α. Kedua senyawa ini berpotensi untuk menginhibisi estrogen alfa, dimana senyawa stigmast-5-en-3β-ol memiliki potensi yang lebih besar karena nilai energi bebasnya lebih rendah. Hal ini menandakan bahwa modifikasi struktur senyawa mampu mengubah nilai energi ikatan dan interaksi antara ligan dan reseptor.

In Silico Study of Steroid Compound Activity Against Breast Cancer Using Estrogen Alpha (ER-α). Breast cancer is the second worldwide leading cause of cancer death in women after lung cancer. Steroids are a group of active compounds isolated from the Chisocheton genus that has activity against MCF-7 breast cancer cells. This study aimed to determine the interaction activity of steroid compounds against alpha estrogen receptor (ER-α) through in silico method specifically mlecular docking. The modeling of the three-dimensional structure (3D) of steroid compounds was performed by considering their protonation states at pH 7.4. The in silico method was validated by redocking the crystal structure of ER-α until obtaining an RMSD value < 2 Å, using the AutoDock 4.2.6 program. Steroids compounds were screened with the same program namely the molecular docking method. Screening results show that the free energy values of the steroid compounds were -10.08 kcal/mol (7α-hydroxy-β-sitosterol) and -10.75 kcal/mol (stigmast-5-en-3β-ol), which are stronger than estradiol (-9.62 kcal/mol) as native ligand of ER-α. Both of these compounds can inhibit the alpha estrogen receptor, in which the stigmast-5-en-3β-ol compound has a greater potential because of its lower free energy value. This finding indicates that modification of the compound's structure could change the binding energy value and interaction between ligands and receptors.

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