期刊
ACTA PAEDIATRICA
卷 96, 期 -, 页码 26-32出版社
WILEY
DOI: 10.1111/j.1651-2227.2007.00202.x
关键词
autophagosome; axonal spheroid; cholesterol; endosome; ganglioside; glycosaminoglycan; glycosphingolipid; lysosome; proteoglycans; raft; retrosome; sphingomyelin
类别
资金
- NICHD NIH HHS [HD045561] Funding Source: Medline
- NINDS NIH HHS [NS053677] Funding Source: Medline
The view that lysosomes simply represent end organelles in the serial degradation of polymeric molecules derived from the cell surface and its interior has led to major misconceptions about the nature of lysosomal storage diseases and the pathogenic cascades that characterize them. Accordingly, lysosomal storage bodies are often considered 'inert', inducing cell dysfunction and death primarily through mechanical overcrowding of normal organelles or by other non-specific means leading to generalized cytotoxicity. However, modern studies of lysosomes and their component proteins provide evidence to support a far greater role for these organelles in cell metabolism. In intimate association with endosomal, autophagosomal and related vesicular systems, the greater lysosomal system can be conceptualized as a vital recycling centre that serves as a central metabolic coordinator, influencing literally every aspect of the cell, from signal transduction to regulation of gene expression. Conclusion: This broader view of the role of lysosomes in cells not only provides insight into how single gene defects impacting on lysosomal function can result in the plethora of complex cellular transformations characteristic of these diseases, but also suggests new and innovative therapies that may hold considerable promise for ameliorating disease progression.
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