Organellophagy: eliminating cellular building blocks via selective autophagy.

Organellophagy: eliminating cellular building blocks via selective autophagy.
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DOI:
10.1083/jcb.201402054
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发表时间:
2014-05-26
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Okamoto K
Okamoto K
中科院分区:
其他
文献类型:
--
作者:
Okamoto K

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细胞器的质量和数量的维持对细胞的动态平衡和适应多变的环境至关重要。新出现的证据表明,这种控制是通过自噬选择性地消除细胞器而实现的,称为细胞器吞噬。有机体吞噬包括三个关键步骤:诱导、标记和隔离,分别涉及信号通路、细胞器标志性分子和核心自噬相关蛋白。此外,翻译后修饰,如磷酸化和泛素化,在招募和定制每个细胞器的自噬机制方面发挥着重要作用。吞噬细胞器的基本原理从酵母到哺乳动物都是保守的,突出了它在真核细胞中的生物学相关性。
Maintenance of organellar quality and quantity is critical for cellular homeostasis and adaptation to variable environments. Emerging evidence demonstrates that this kind of control is achieved by selective elimination of organelles via autophagy, termed organellophagy. Organellophagy consists of three key steps: induction, cargo tagging, and sequestration, which involve signaling pathways, organellar landmark molecules, and core autophagy-related proteins, respectively. In addition, posttranslational modifications such as phosphorylation and ubiquitination play important roles in recruiting and tailoring the autophagy machinery to each organelle. The basic principles underlying organellophagy are conserved from yeast to mammals, highlighting its biological relevance in eukaryotic cells.
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