内质网自噬的各种色调。
The various shades of ER-phagy.
机构信息
Structural Genomics Consortium, BMLS, Goethe University, Frankfurt, Germany.
Institute of Biochemistry 2, Goethe University School of Medicine, Frankfurt, Germany.
出版信息
FEBS J. 2019 Dec;286(23):4642-4649. doi: 10.1111/febs.15031. Epub 2019 Aug 13.
Endoplasmic reticulum (ER) is a large and dynamic cellular organelle. ER morphology consists of sheets, tubules, matrixes, and contact sites shared with other membranous organelles. The capacity of the ER to fulfill its numerous biological functions depends on its continuous remodeling and the quality control of its proteome. Selective turnover of the ER by autophagy, termed ER-phagy, plays an important role in maintaining ER homeostasis. ER network integrity and turnover rely on specific ER-phagy receptors, which influence and coordinate alterations in ER morphology and the degradation of ER contents and membranes via the lysosome, by interacting with the LC3/GABARAP family. In this commentary, we discuss general principles and identify the major players in this recently characterized form of selective autophagy, while simultaneously highlighting open questions in the field.
内质网(ER)是一种大型且动态的细胞细胞器。ER 的形态由片层、小管、基质和与其他膜细胞器共享的接触位点组成。内质网履行其众多生物学功能的能力取决于其不断的重塑和其蛋白质组的质量控制。自噬对内质网的选择性降解,称为 ER 自噬,在维持内质网的平衡中起着重要作用。内质网网络的完整性和周转率依赖于特定的 ER 自噬受体,这些受体通过与 LC3/GABARAP 家族相互作用,影响和协调内质网形态的改变以及内质网内容物和膜的降解,从而影响和协调内质网形态的改变以及内质网内容物和膜的降解。在这篇评论中,我们讨论了一般原则,并确定了这个最近被描述的选择性自噬形式的主要参与者,同时突出了该领域的悬而未决的问题。