Autophagy 是为坚持说细胞的动态平衡和它的机能障碍与众多的人的疾病被联系要求的一条中央 lysosomal 降级小径。在 autophagy 识别播放器,我们化学上测试了 ∼1200 在果蝇胖身体克隆在 X 染色体上导致了变化并且发现 shibire (shi ) 在导致饥饿的 autophagy 起一个必要作用。shi 编码在 endocytosis 期间从血浆膜为 clathrin 涂的泡的分裂要求的 dynamin 蛋白质。我们证明史为 autophagy 开始和 autophagosome-lysosome 熔化是非必需的,但是为 lysosomal/autolysosomal 要求了使发酸。我们也证明象 clathrin 和 AP2 一样的另外的 endocytic 核心机械部件在作为 dynamin 调整 autophagy 和 lysosomal 功能起类似然而并非相同的作用。以前的研究建议 dynamin 直接通过它的切除活动调整 autophagosome 形成和 autophagic lysosome 改革(ALR ) 。这里,我们提供 dynamin 也由调整 lysosomal 功能间接地调整 autophagy 的证据。
Autophagy is a central lysosomal degradation pathway required for maintaining cellular homeostasis and its dysfunction is associated with numerous human diseases. To identify players in autophagy, we tested ~ 1200 chemically induced mutations on the X chromosome in Drosophila fat body clones and discovered that shibire (shi) plays an essential role in starvation-induced autophagy, shi encodes a dynamin protein required for fission of clathrin-coated vesicles from the plasma membrane during endocytosis. We showed that Shi is dispensable for autophagy initiation and autophagosome--lysosome fusion, but required for lysosomal/autolysosomal acidification. We also showed that other endocytic core machinery components like clathrin and AP2 play similar but not identical roles in regulating autophagy and lysosomal function as dynamin. Previous studies suggested that dynamin directly regulates autophagosome formation and autophagic lysosome reformation (ALR) through its excision activity, Here, we provide evidence that dynamin also regulates autophagy indirectly by regulating lysosomal function.