Song T-T, Cai R-S, Hu R, Xu Y-S, Qi B-N, Xiong Y-A
School of Pharmacy, Zunyi Medical University, Xinpu District, Zunyi, Guizhou, China.
Eur Rev Med Pharmacol Sci. 2021 Feb;25(3):1641-1649. doi: 10.26355/eurrev_202102_24875.
Autophagy is a main metabolic process in which eukaryotic cells use lysosomes to eliminate abnormal proteins and damaged organelles to maintain cell homeostasis. Studies have revealed that neurodegenerative diseases, tumor, hepatic diseases, etc. are related to abnormal autophagy processes in recent years. Recent studies have shown that TFEB is a major transcription regulator of autophagy-lysosomal pathway (ALP) transcriptional regulation, which positively regulates the expression of autophagy and lysosomal biogenesis-related genes, thereby promoting autophagosome formation, autophagosome-lysosome fusion, and degradation of autophagy substrates. It has also been found that TFEB promotes clearance of intracellular substrates through lysosomal exocytosis. Therefore, the study of biological functions and related regulatory mechanisms of TFEB will provide important clues and theoretical basis for further explaining its physiological pathogenesis and the treatment of related diseases.
自噬是一种主要的代谢过程,真核细胞利用溶酶体清除异常蛋白质和受损细胞器以维持细胞稳态。近年来研究表明,神经退行性疾病、肿瘤、肝脏疾病等都与自噬过程异常有关。最近的研究表明,转录因子EB(TFEB)是自噬-溶酶体途径(ALP)转录调控的主要转录调节因子,它正向调节自噬和溶酶体生物发生相关基因的表达,从而促进自噬体形成、自噬体-溶酶体融合以及自噬底物的降解。还发现TFEB通过溶酶体胞吐作用促进细胞内底物的清除。因此,对TFEB生物学功能及相关调控机制的研究将为进一步阐明其生理发病机制及相关疾病的治疗提供重要线索和理论依据。