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ATG14在肝脂滴恒温中发挥着至关重要的作用

Menghao Huang¹, Yang Zhang¹, Jimin Park¹

¹Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA.

Metabolism: clinical and experimental

|September 23, 2023

概括

与自相关的14 (ATG14) 通过与脂肪三糖 lipase (ATGL) 和比较基因识别-58 (CGI-58) 相互作用来增强脂质滴分解. 这项研究阐明了ATG14在脂滴恒温和脂解中的作用.

科学领域:

细胞生物学细胞生物学
分子生物学分子生物学
代谢过程中的代谢.

背景情况:

与自相关的14 (ATG14) 是已知的自调节剂.
在脂质滴中ATG14的局部化表明在脂质代谢中起作用,但这种功能尚未得到充分理解.
了解ATG14在脂质滴中的功能对于阐明脂质平衡至关重要.

研究的目的:

为了研究ATG14在脂质滴体恒温中的作用.
确定ATG14如何局部化到脂质滴,并识别功能域.
探索ATG14与参与脂解的蛋白质的相互作用.

主要方法:

分析ATG14在脂质代谢中的功能,使用肝细胞中敲击和过度表达.
使用突变发生法来识别负责脂滴滴向的ATG14域.
使用共免疫沉来识别ATG14相互作用蛋白.
评估ATG14对人类肝细胞和小鼠肝脏模型脂解的影响.

主要成果:

证实ATG14在肝细胞中的脂质滴中得到丰富.
巴科尔/ATG14自菌体向序列 (BATS) 域介导ATG14的脂质滴滴定位.
ATG14与脂肪三糖 lipase (ATGL) 和比较基因鉴定-58 (CGI-58) 相互作用,增强了它们的相互作用.
缺少ATG14显著降低了甘油三的水解,表明脂解受损.

结论:

ATG14直接促进脂质滴滴的分解.
通过与ATGL和CGI-58的相互作用,ATG14可以增强脂解.
这项研究阐明了ATG14在调节脂质滴滴代谢中的新作用.

关键词:

这是一个ABHD5HD5的版本.在ATGL中,它是ATGL.自自是一种自的过程.在CGI-58中使用.脂质溶解脂质溶解是一种

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