Role of the mammalian ATG8/LC3 family in autophagy: differential and compensatory roles in the spatiotemporal regulation of autophagy.

Role of the mammalian ATG8/LC3 family in autophagy: differential and compensatory roles in the spatiotemporal regulation of autophagy.
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DOI:
10.5483/bmbrep.2016.49.8.081
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发表时间:
2016-08
期刊:
影响因子:
3.8
通讯作者:
Lee JA
Lee JA
中科院分区:
生物学3区
文献类型:
--
作者:
Lee YK;Lee JA

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自噬是一种进化上保守的溶酶体细胞降解途径,与许多生理和病理过程相关。自噬的标志是自噬体的形成,自噬体通过与溶酶体的融合以选择性或​​非选择性方式吞噬和降解胞质成分。自噬受到自噬相关 (atg) 基因编码的蛋白质的严格调控。在这些蛋白质中,ATG8/LC3 对于自噬体生物发生/成熟至关重要,并且还充当选择性自噬的衔接蛋白。在哺乳动物细胞中,已鉴定出酵母 Atg8 的几种同源物,例如 MAP1LC3、GABARAP 和 GABARAPL 1/2。然而,这种基因多样性在高等真核生物中的生物学相关性及其具体作用在很大程度上尚不清楚。在这篇综述中,我们描述了哺乳动物 ATG8/LC3 家族,并讨论了了解它们在自噬过程中的作用的最新进展。 [2016 年 BMB 报告; 49(8):424-430]
Autophagy, an evolutionarily conserved cellular degradation pathway of the lysosome, is associated with many physiological and pathological processes. The hallmark of autophagy is the formation of the autophagosome that engulfs and degrades cytosolic components via its fusion with the lysosome, in either a selective or a non-selective manner. Autophagy is tightly regulated by proteins encoded by autophagy-related (atg) genes. Among these proteins, ATG8/LC3 is essential for autophagosome biogenesis/maturation and it also functions as an adaptor protein for selective autophagy. In mammalian cells, several homologs of yeast Atg8 such as MAP1LC3, GABARAP, and GABARAPL 1/2 have been identified. However, the biological relevance of this gene diversity in higher eukaryotes, and their specific roles, are largely unknown. In this review, we describe the mammalian ATG8/LC3 family and discuss recent advancements in understanding their roles in the autophagic process. [BMB Reports 2016; 49(8): 424-430]
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