生物技术通报 ›› 2023, Vol. 39 ›› Issue (11): 110-122.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0662

• 综述与专论 • 上一篇    下一篇

植物表达外源蛋白研究进展及展望

蒋铭轩(), 李康, 罗亮, 刘建祥(), 芦海平()   

  1. 浙江大学生命科学学院,杭州 310027
  • 收稿日期:2023-07-12 出版日期:2023-11-26 发布日期:2023-12-20
  • 通讯作者: 刘建祥,男,博士,教授,研究方向:植物遗传学;E-mail: jianxiangliu@zju.edu.cn
    芦海平,男,博士,研究员, 研究方向:植物分子生物学;E-mail: luhaiping@zju.edu.cn
  • 作者简介:蒋明轩,男,研究方向:植物分子生物学;E-mail: 3200100463@zju.edu.cn
  • 基金资助:
    国家自然科学基金项目(32001920)

Advances on the Expressions of Foreign Proteins in Plants

JIANG Min-xuan(), LI Kang, LUO Liang, LIU Jian-xiang(), LU Hai-ping()   

  1. College of Life Sciences, Zhejiang University, Hangzhou 310027
  • Received:2023-07-12 Published:2023-11-26 Online:2023-12-20

摘要:

植物为宿主表达外源蛋白的系统称之为分子农场,通过农杆菌将外源基因导入植物进行表达具有高效、安全、廉价的优点,特别是植物具备一系列翻译后修饰功能,因此该系统能弥补原核表达系统的缺陷。本综述首先介绍了近些年在烟草叶片瞬时表达和水稻胚乳组织特异性表达上取得的进展,特别是一些利用分子农场进行医用蛋白表达、药物合成、疫苗制备等典型案例。在优化生物反应器、提高表达效率策略上,本综述重点探讨了蛋白翻译后水平上的调控,包括蛋白酶抑制剂的作用、糖基化修饰环节以及分子伴侣共表达等对外源蛋白表达的影响。最后,围绕外源蛋白大量囤积于内质网可能引发内质网胁迫的问题,展望了通过优化内质网环境来提高外源蛋白表达效率的可行性。

关键词: 植物生物反应器, 分子农场, 叶片瞬时表达, 水稻种子反应器, 内质网优化

Abstract:

The system using plants as hosts to express foreign proteins is called molecular farming. The production of foreign proteins in plants via Agrobacterium tumefaciens-mediated transformation has the advantages of high efficiency, safety and low cost. Especially, protein post-translational modification in plants can make up for the defects of the prokaryotic expression system. In this review, we firstly introduce advances in tobacco leaf transient expression or rice endosperm specific expression, especially some typical examples of producing pharmaceutical proteins, medical compounds, and vaccines in molecular farming. In terms of optimizing bioreactors and improving expression efficiency, we then focus the regulation in protein post-translation, including the role of protease inhibitors, and the effects of glycosylation modification processes, and molecular chaperones co-expression on the expressions of foreign proteins. Finally, based on the foreign proteins accumulation in the endoplasmic reticulum(ER)would induce stress to ER, we propose the feasibility of increasing expression efficiency of foreign proteins by optimizing the ER environment.

Key words: plant bioreactor, molecular farming, transient expression in tobacco leaves, rice endosperm bioreactors, ER environment optimization