論文 - 詳細
| RRC ID | 45889 |
|---|---|
| 著者 | Xu M, Liu Y, Zhao L, Gan Q, Wang X, Yang C. |
| タイトル | The lysosomal cathepsin protease CPL-1 plays a leading role in phagosomal degradation of apoptotic cells in Caenorhabditis elegans. |
| ジャーナル | Mol Biol Cell |
| Abstract |
During programmed cell death, the clearance of apoptotic cells is achieved by their phagocytosis and delivery to lysosomes for destruction in engulfing cells. However, the role of lysosomal proteases in cell corpse destruction is not understood. Here we report the identification of the lysosomal cathepsin CPL-1 as an indispensable protease for apoptotic cell removal in Caenorhabditis elegans. We find that loss of cpl-1 function leads to strong accumulation of germ cell corpses, which results from a failure in degradation rather than engulfment. CPL-1 is expressed in a variety of cell types, including engulfment cells, and its mutation does not affect the maturation of cell corpse-containing phagosomes, including phagosomal recruitment of maturation effectors and phagosome acidification. Of importance, we find that phagosomal recruitment and incorporation of CPL-1 occurs before digestion of cell corpses, which depends on factors required for phagolysosome formation. Using RNA interference, we further examine the role of other candidate lysosomal proteases in cell corpse clearance but find that they do not obviously affect this process. Collectively, these findings establish CPL-1 as the leading lysosomal protease required for elimination of apoptotic cells in C. elegans. |
| 巻・号 | 25(13) |
| ページ | 2071-83 |
| 公開日 | 2014-7-1 |
| DOI | 10.1091/mbc.E14-01-0015 |
| PII | mbc.E14-01-0015 |
| PMID | 24829385 |
| PMC | PMC4072580 |
| MeSH | Animals Apoptosis* Caenorhabditis elegans / cytology Caenorhabditis elegans / enzymology Caenorhabditis elegans Proteins / physiology* Cathepsin L / physiology* Gene Expression Phagosomes / enzymology* Protein Transport Proteolysis |
| IF | 3.791 |
| 引用数 | 15 |
| WOS 分野 | CELL BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 1 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 線虫 | tm1125 tm2423 |