New factors for protein transport identified by a genome-wide CRISPRi screen in mammalian cells

New factors for protein transport identified by a genome-wide CRISPRi screen in mammalian cells
复制标题

通过哺乳动物细胞全基因组 CRISPRi 筛选鉴定出蛋白质运输的新因子

DOI:
10.1101/556746
复制
发表时间:
2019
期刊:
--
影响因子:
--
通讯作者:
Bassaganyas L
Bassaganyas L
中科院分区:
--
文献类型:
--
作者:
Bassaganyas L

文献摘要

参考文献

相似文献

蛋白质和膜运输途径对于细胞和组织的稳态是至关重要的。传统的遗传学和生物化学方法揭示了这些过程的基本原理。然而,分泌途径功能所需的因素清单仍然不完整,其适应机制知之甚少。在这里,我们提出了一种基于全基因组CRISPRi筛选的强大策略,该策略允许识别参与蛋白质转运的新因子。两个新鉴定的因子,TTC 17和CCDC 157,定位于沿着分泌途径,并被发现与ER-高尔基体膜的常驻蛋白相互作用。此外,我们发现,TTC 17敲低后,高尔基体池的极化组织被改变,产生糖基化缺陷,并且CCDC 157是转运载体融合到高尔基体膜的重要因素。总之,我们的工作确定并表征了蛋白质转运和分泌机制中的新参与者,并为在生理和病理背景下使用我们的平台开辟了刺激性的前景。
Protein and membrane trafficking pathways are critical for cell and tissue homeostasis. Traditional genetic and biochemical approaches have shed light on basic principles underlying these processes. However, the list of factors required for secretory pathway function remains incomplete, and mechanisms involved in their adaptation poorly understood. Here, we present a powerful strategy based on a pooled genome-wide CRISPRi screen that allowed the identification of new factors involved in protein transport. Two newly identified factors, TTC17 and CCDC157, localized along the secretory pathway and were found to interact with resident proteins of ER-Golgi membranes. In addition, we uncovered that upon TTC17 knockdown, the polarized organization of Golgi cisternae was altered, creating glycosylation defects, and that CCDC157 is an important factor for the fusion of transport carriers to Golgi membranes. In conclusion, our work identified and characterized new actors in the mechanisms of protein transport and secretion and opens stimulating perspectives for the use of our platform in physiological and pathological contexts.
DOI: 10.1016/s0021-9258(17)46856-6
发表时间: 1993-08
期刊: The Journal of biological chemistry
影响因子: --
作者:
Mingjie Jin;Martin D. Snider
通讯作者: Mingjie Jin;Martin D. Snider
DOI: --
发表时间: --
期刊: --
影响因子: --
作者:
Joanne Chia;Germaine Goh;V. Racine;S. Ng;Pankaj Kumar;F. Bard
通讯作者: Joanne Chia;Germaine Goh;V. Racine;S. Ng;Pankaj Kumar;F. Bard
DOI: 10.1021/acschembio.7b00657
发表时间: 2018-02-16
影响因子: 4
作者:
Kampmann M
通讯作者: Kampmann M
DOI: 10.1101/391789
发表时间: 2018-08
期刊: eLife
影响因子: 7.7
作者:
Sam A. Menzies;Norbert Volkmar;D. J. van den Boomen;R. Timms;Anna S Dickson;J. Nathan;P. Lehner
通讯作者: Sam A. Menzies;Norbert Volkmar;D. J. van den Boomen;R. Timms;Anna S Dickson;J. Nathan;P. Lehner
DOI: 10.1016/j.tips.2017.11.009
发表时间: 2018-03
影响因子: 13.8
作者:
Eichel K;von Zastrow M
通讯作者: von Zastrow M