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研究生: 林鼎堅
Ding-Chien Lin
論文名稱: 一個與癌症相關激酶-配合體的對位研究
A Docking Study of Cancer-related Kinase-ligand Complexes
指導教授: 孫英傑
Sun, Ying-Chieh
學位類別: 碩士
Master
系所名稱: 化學系
Department of Chemistry
論文出版年: 2007
畢業學年度: 95
語文別: 中文
論文頁數: 60
中文關鍵詞: 癌症對位
論文種類: 學術論文
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  • 抑制PDK1的活性是抗癌藥物研發的目標之一。在本研究中,使用Autodock程式進行了ligand-PDK1複合體的docking計算,再現了目前已知的九個ligand-PDK1實驗結構。除了其中兩個ligand以外,其餘的錯合體結合能與實驗所得IC50值呈現相關性。為了設計更好的抑制劑,我們做了一些低IC50值的藥物UCN(nM)、BIM8(μM),及其衍生物的docking計算。有幾個得到更大的結合能,代表其為更好的抑制劑,並討論穩定複合體之作用力。另外,也計算了一系列以Celebrex為基礎的化合物,其計算結果與實驗IC50的相關度也報告、討論於此論文中。

    Inhibition of PDK1 kinase activity is one of the targets in developing cancer drug. In the present study, a docking calculation for ligand-PDK1 kinase complexes was carried out using the Autodock program. Experimental binding modes of 9 available lignad-PDK1 structures were reproduced. The binding energies of these complexes were correlated well with experimental IC50 values except 2 ligands. Toward designing better inhibitors, we have carried out docking calculation for a number of derivatives of the inhibitors of low IC50 value, UCN (in nM range) and BIM8. The calculations for several derivatives gave lower binding energy, suggesting that they are better inhibitors. The rationals of the calculated binding energies are discussed. In addition, calculations for a series of celebrex-based compounds were also carried out. Their correlations with experimental available IC50 values are discussed as well.

    總目錄 圖目錄 II 表目錄 IV 摘要 VI ABSTRACT VII 第一章、緒論 - 1 - 1-1 前言 - 2 - 1-2 KINASE信息傳遞(SIGNALING TRANSDUCTION)與癌症 - 3 - 1-3 PI3K /AKT信號通路(SIGNALING PATHWAY) - 4 - 1-4 PDK1及其抑制劑 - 6 - 1-5 DOCKING - 10 - 1-6 本研究目標 - 11 - 第二章、理論及方法. - 12 - 2-1 OVERVIEW - 13 - 2-2 SCORING FUNCTION - 14 - 2-2.1 凡得瓦作用力 - 16 - 2-2.2 氫鍵 - 18 - 2-2.3 水合能 - 19 - 2-3 GRID MAP - 20 - 2-4 PROTONATION STATE - 21 - 2-5 LGA - 22 - 2-6 計算之前置處理與DOCKING設定 - 25 - 2-7 分析方法 - 26 - 2-7.1 氫鍵分析 - 26 - 2-7.2 RMSD (Root Mean Square Deviation) 分析 - 27 - 第三章、計算結果與討論 - 28 - 3-1 PDK1-LIGAND複合體已知實驗3D結構之再現 - 29 - 3-2 NANO MOLAR抑制劑UCN-ANALOGUE之計算 - 40 - 3-3 抑制劑BIM8-ANALOGUE之計算 - 43 - 3-4 CELEBREX及其36個衍生物之計算 - 45 - 3-5 CELEBREX 25~36號衍生物MODIFIED之計算 - 49 - 第四章、結論 - 58 - 第五章、參考文獻 - 60 - 圖目錄 圖1-3.1 PI3K/Akt pathway....................................................................- 4 - 圖2-2.1 Lennard-Jones potential.........................................................- 16 - 圖2-2.2 氫鍵.......................................................................................- 18 - 圖2-2.3 solvation energy.....................................................................- 19 - 圖2-3.1 Grid map................................................................................- 20 - 圖2-4.1 LGA程序示意圖...................................................................- 24 - 圖3-1.1八個實驗與計算結果相關圖(R2=0.580)..........................- 32 - 圖3-1.2 ATP形成之氫鍵....................................................................- 33 - 圖3-1.3 BIM1形成之氫鍵..................................................................- 33 - 圖3-1.4 BIM2形成之氫鍵..................................................................- 34 - 圖3-1.5 BIM3形成之氫鍵..................................................................- 34 - 圖3-1.6 BIM8形成之氫鍵..................................................................- 35 - 圖3-1.7 BX320形成之氫鍵................................................................- 35 - 圖3-1.8 LY4形成之氫鍵....................................................................- 36 - 圖3-1.9 STO形成之氫鍵....................................................................- 36 - 圖3-1.10 UCN形成之氫鍵.................................................................- 37 - 圖3-1.11 七個實驗(去掉ATP與BX320)與計算結果相關圖.....- 38 - 圖3-2.1 UCN-analogue置換之位置...................................................- 40 - 圖3-2.2 CCCCC2與UCN結合模式之比較......................................- 42 - 圖3-3.1 BIM8-analogue置換之位置..................................................- 43 - 圖3-4.1 Celebrex及其36個衍生物的dock結果..............................- 45 - 圖3-4.2 Celebrex及其36個衍生物實驗與計算結果相關圖............- 46 - 圖3-5.1 25號衍生物(rimg+indole)的dock結果................................- 50 - 圖3-5.2 25號衍生物(indole)的dock結果..........................................- 50 - 圖3-5.3由左至右依序為:二環(綠色)、三環(黃色)、ring+indole(紅色)、indole(紫色)....................................................................- 51 - 圖3-5.4 25號衍生物(indole)的dock結果..........................................- 52 - 圖3-5.5 26號衍生物(indole)的dock結果..........................................- 53 - 圖3-5.6 27號衍生物(indole)的dock結果..........................................- 53 - 圖3-5.7 31號衍生物(indole)的dock結果..........................................- 54 - 圖3-5.8 32號衍生物(indole)的dock結果..........................................- 54 - 圖3-5.9 34號衍生物(indole)的dock結果..........................................- 55 - 圖3-5.10 35號衍生物(indole)的dock結果........................................- 55 - 圖3-5.11 BIM3與25~36(indole)形成氫鍵位置之比較...................- 57 - 表目錄 表1-4.1 目前可得的九個實驗結構.....................................................- 7 - 表1-4.2 Celebrex及其36個衍生物......................................................- 9 - 表2-2.1 30筆供校正之實驗數據.......................................................- 15 - 表2-2.2 Autodock 3.0.5預設參數.......................................................- 15 - 表3-1.1 八個有IC50值之實驗結構的pKd值與計算結果................- 29 - 表3-1.2 九個實驗結構之再現...........................................................- 31 - 表3-1.3 九個實驗結構的氫鍵列表...................................................- 37 - 表3-2.1 UCN-analogue之計算結果...................................................- 41 - 表3-3.1 BIM8-analogue之計算結果..................................................- 44 - 表3-4.1 25~36形成氫鍵數量與結合能之關係...............................- 46 - 表3-5.1 Celebrex 25~36號衍生物modified.....................................- 51 - 表3-5.2 25~36(indole)形成之氫鍵...................................................- 56 -

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