The Enlarged Lysosomes in beigej Cells Result From Decreased Lysosome Fission and Not Increased Lysosome Fusion
نویسندگان
چکیده
منابع مشابه
Lysosome-endosome fusion and lysosome biogenesis.
Recent data both from cell-free experiments and from cultured cells have shown that lysosomes can fuse directly with late endosomes to form a hybrid organelle. This has a led to a hypothesis that dense core lysosomes are in essence storage granules for acid hydrolases and that, when the former fuse with late endosomes, a hybrid organelle for digestion of endocytosed macromolecules is created. L...
متن کاملEndosome-lysosome fusion.
The delivery of endocytosed cargo to lysosomes occurs through kissing and direct fusion of late endosomes/MVBs (multivesicular bodies) and lysosomes. Live-cell and electron microscopy experiments together with cell-free assays have allowed us to describe the characteristics of the delivery process and determine the core protein machinery required for fusion. The ESCRT (endosomal sorting complex...
متن کاملThe biogenesis of lysosomes and lysosome-related organelles.
Lysosomes were once considered the end point of endocytosis, simply used for macromolecule degradation. They are now recognized to be dynamic organelles, able to fuse with a variety of targets and to be re-formed after fusion events. They are also now known to be the site of nutrient sensing and signaling to the cell nucleus. In addition, lysosomes are secretory organelles, with specialized mac...
متن کاملThe Role of Intraorganellar Ca2+In Late Endosome–Lysosome Heterotypic Fusion and in the Reformation of Lysosomes from Hybrid Organelles
We have investigated the requirement for Ca(2+) in the fusion and content mixing of rat hepatocyte late endosomes and lysosomes in a cell-free system. Fusion to form hybrid organelles was inhibited by 1,2-bis(2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid (BAPTA), but not by EGTA, and this inhibition was reversed by adding additional Ca(2+). Fusion was also inhibited by methyl ester of EGTA ...
متن کاملNew insights into autophagosome-lysosome fusion.
Macroautophagy (autophagy) is a highly conserved intracellular degradation system that is essential for homeostasis in eukaryotic cells. Due to the wide variety of the cytoplasmic targets of autophagy, its dysregulation is associated with many diseases in humans, such as neurodegenerative diseases, heart disease and cancer. During autophagy, cytoplasmic materials are sequestered by the autophag...
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ژورنال
عنوان ژورنال: Traffic
سال: 2011
ISSN: 1398-9219
DOI: 10.1111/j.1600-0854.2011.01300.x