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  • 學位論文

由具脯胺酸片段之D-半乳糖脂質製成的超分子凝膠及其5- Fluorouracil 在體外的控制釋放

A Supramolecular Gelator Based on D-Galactolipids with Proline Fragment and Its Controlled Release of 5-Fluorouracil in vitro

指導教授 : 蔡祐輔

摘要


本論文旨在從事超分子凝膠性質測試,及其作為藥物載體時, 體外控制釋放之研究。 實驗室自行合成之醣脂質低分子量凝膠因子GPS-1 及 GPO-1,分別以水、15 種單一有機溶劑及9 種混和溶劑,進行凝膠 測試。測試結果顯示,GPS-1 分別在單一溶劑CH2Cl2、EA、EtOH 及混和溶劑MeOH/H2O(4:1(v/v), 3:2(v/v), 2:3(v/v))、EtOH/H2O (4:1(v/v), 3:2(v/v), 2:3(v/v), 3:7(v/v))可形成凝膠,但GPO-1 在此測試中並無凝膠生成。 GPS-1 雖凝膠測試結果不具酸鹼刺激應答,但可包覆藥物濃度 達600 mM 不致影響凝膠結構。 體外藥物釋放測試,以GPS-1 作為藥物載體,調控載體濃度, 可控制初期藥物釋放之速率,但最終皆可達到近百分百釋放率;而 調控藥物濃度,將影響最終釋放率,隨包覆藥物濃度提升,最終釋 放率呈現下降之趨勢。

並列摘要


We conduct our research in order to realize the natures of supramolecular gelators, and the conditions of releasing in vitro when we make supramolecular gelators become the carriers of drugs. GPS-1and GPO-1 gelators are synthesized in laboratory. We test it in H2O, 15 kind of organic solvents, 5different ratio of solvent- H2O mixed MeOH and H2O mixed EtOH. The result shows that the gel will turn up only when we put GPS-1into CH2Cl2, EtOAc, H2O/MeOH(2:3(v/v), 3:2(v/v), 4:1(v/v)) and H2O/EtOH(3:7(v/v), 2:3(v/v), 3:2(v/v), 4: 1(v/v)). In the experiment of pH-stimuli responsive, GPS-1 does not conform to the response, but the constructure of gel won’t be effect even when the concentration of drug achieves 600 mM. The experiment of drug releasing in vitro shows that drugs releasing mechanism conforms to the diffusion model III and adjust gelators or drugs concentration will be control primary and ultimate drug release rate .

參考文獻


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