2003-10-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/693795摘要:細胞自噬 (autophagy) 泛指經由雙層以上單位膜所形成的運輸小泡,將細胞質內一部分成份送入溶小體 (lysosome) 中,而加以分解循環利用其基本組成分子的細胞生理現象。除了正常細胞為適應惡劣環境進行細胞自噬外,近年來研究更發現,腫瘤與組織退化疾病的細胞常伴隨有異常細胞自噬活性,一般認為這與細胞自噬可選擇性去除受損的巨分子及胞器,甚至促成細胞死亡 (type II programmed cell death),以避免這些物質干擾正常生理功能有關。因此,研究細胞自噬的分子機制,不但有助於我們認識細胞自噬在這些疾病中所扮演的角色,更可能在將來用以發展新的療法。本計劃將以三年時間來研究細胞自噬的分子機制。在以往的實驗中,一個細胞自噬運輸小泡的膜上蛋白 Aut7 被發現與貨物受體 (cargo receptor) 可直接接合,我們計畫以此為基礎來探討 Aut7 促進選擇性細胞自噬的機轉。在細胞自噬運輸小泡形成的過程中,其包圍膜 (limiting membrane) 的來源一直是個無解的謎,利用 Aut7 與運輸小泡包圍膜接合的特性,配合上特定的蛋白質傳遞突變株,我們將分析以內質網<br> Abstract: Autophagy is a membrane trafficking mechanism that delivers cytoplasmic cargo to the vacuole/lysosome for degradation and recycling. Since its discovery, autophagy has been considered simply as a physiological event for accommodating cells to starvation challenges. Recent studies, however, have uncovered the intimate relation between autophagy abnormalities and human diseases, such as cancers and tissue degenerative diseases. Autophagy is therefore proposed as a mechanism to selectively eliminat細胞自噬蛋白質傳遞溶小體腫瘤細胞死亡autophagyprotein targetingmembrane traffickinglysosomevacuolecancerprogrammed cell death細胞自噬分子機制之研究