Lei Yuchen, Wen Xin, Klionsky Daniel J
Life Sciences Institute, and the Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
Contact (Thousand Oaks). 2022 Jan-Dec;5. doi: 10.1177/25152564221136388. Epub 2022 Oct 31.
Vps13 is a large, conserved protein that transports lipids between membranes. Its localization at multiple organelle membranes and membrane contact sites suggests its important physiological roles. In addition, the high correlation of mutant with certain diseases, especially those involving neurodegeneration, makes this protein of considerable biomedical interest. Taking advantage of the fact that yeasts only have one Vps13 protein, the roles of yeast Vps13 have been well studied. However, whether and how Vps13 functions in macroautophagy/autophagy, a process of degradation of cytoplasmic cargoes, have been elusive questions. In this paper, we investigated the role of Vps13 in both non-selective and selective autophagy and found that this protein participates in non-selective autophagy, reticulophagy and pexophagy, but not mitophagy, and that Vps13 plays a role in the late stage of autophagy.
Vps13是一种大型的保守蛋白,负责在膜之间运输脂质。它定位于多个细胞器膜和膜接触位点,表明其具有重要的生理作用。此外,该蛋白的突变与某些疾病,尤其是那些涉及神经退行性变的疾病高度相关,这使得它在生物医学领域备受关注。利用酵母仅有一种Vps13蛋白这一事实,酵母Vps13的作用已得到充分研究。然而,Vps13是否以及如何在巨自噬/自噬(一种细胞质货物降解过程)中发挥作用,一直是难以捉摸的问题。在本文中,我们研究了Vps13在非选择性和选择性自噬中的作用,发现该蛋白参与非选择性自噬、网状自噬和过氧化物酶体自噬,但不参与线粒体自噬,并且Vps13在自噬后期发挥作用。