Self-consumption: the interplay of autophagy and apoptosis.

Self-consumption: the interplay of autophagy and apoptosis.
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DOI:
10.1038/nrm3735
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发表时间:
2014-02
期刊:
Nature reviews. Molecular cell biology
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其他
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自噬和凋亡分别控制细胞内细胞器和蛋白质的周转,以及生物体内细胞的周转,并且许多应激途径依次引起同一细胞内的自噬和凋亡。通常,自噬阻断细胞凋亡的诱导,并且细胞凋亡相关的半胱天冬酶激活关闭自噬过程。然而,在特殊情况下,自噬或自噬相关蛋白可能有助于诱导细胞凋亡或坏死,自噬已被证明会过度降解细胞质,导致“自噬性细胞死亡”。自噬和细胞死亡途径之间的对话影响死亡细胞的正常清除,以及死细胞抗原的免疫识别。因此,自噬和凋亡之间的关系的中断具有重要的病理生理后果。
Autophagy and apoptosis control the turnover of organelles and proteins within cells, and of cells within organisms, respectively, and many stress pathways sequentially elicit autophagy, and apoptosis within the same cell. Generally autophagy blocks the induction of apoptosis, and apoptosis-associated caspase activation shuts off the autophagic process. However, in special cases, autophagy or autophagy-relevant proteins may help to induce apoptosis or necrosis, and autophagy has been shown to degrade the cytoplasm excessively, leading to ‘autophagic cell death’. The dialogue between autophagy and cell death pathways influences the normal clearance of dying cells, as well as immune recognition of dead cell antigens. Therefore, the disruption of the relationship between autophagy and apoptosis has important pathophysiological consequences.
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