鞘脂在介导内质网应激反应中的作用综述

李俭*,鲍赫楠,黄骊群,陈奕里,王瑞华,王铃艳,曾鸿运,姚楠
中山大学生命科学学院, 有害生物防治与资源利用国家重点实验室, 广东省热带与亚热带植物资源重点实验 室, 广州510275

通信作者:李俭;E-mail: lijian76@mail.sysu.edu.cn

摘 要:

鞘脂不仅是生物膜的重要成分, 也是重要的生物活性分子, 参与多种信号转导途径, 在动植物和酵母的生长过程中发挥着重要作用。内质网是细胞内负责蛋白合成、折叠、修饰和转运的细胞器, 错误折叠或未折叠蛋白聚集内质网腔内会引发内质网应激反应。近年来, 研究发现在动物和酵母中, 鞘脂对内质网应激反应具有调节作用。然而在植物中, 鞘脂与内质网应激反应的关系还不清楚。确定植物鞘脂与内质网应激反应之间的作用关系, 将极大推动鞘脂在植物抗性反应中的功能研究。本文综述了鞘脂的代谢调控以及鞘脂在内质网应激反应中的研究现状和进展。

关键词:鞘脂; 内质网; 内质网应激反应; 未折叠蛋白反应; 内质网相关降解途径

收稿:2020-06-05   修定:2020-11-05

资助:国家自然科学基金(31700221和31771357)和广东省自然科 学基金(2017A030311005)

A review of sphingolipids in endoplasmic reticulum stress response

LI Jian*, BAO Henan, HUANG Liqun, CHEN Yili, WANG Ruihua, WANG Lingyan, ZENG Hongyun, YAO Nan
State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China

Corresponding author: LI Jian; E-mail: lijian76@mail.sysu.edu.cn

Abstract:

Sphingolipids are structural components of membrane and also act as intracellular second messengers which play critical roles in cell signal transduction. Endoplasmic reticulum (ER) is an organelle responsible for protein synthesis, folding, modifcation and transporting. The accumulation of misfolded or unfolded proteins in ER could induce ER stress response. In recent years, it has been found that sphingolipids can regulate ER stress response in animals and yeast. However, the relationship between sphingolipids and ER stress response in plants is unclear. Determining the function of plant sphingolipids in ER stress response would greatly promote the study of sphingolipids in plant resistance. This paper reviews
the research progress of sphingolipids in ER stress response.

Key words: sphingolipid; endoplasmic reticulum; endoplasmic reticulum stress response; unfolded protein response; endoplasmic reticulum–associated degradation pathway

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