中国农业科学 ›› 2025, Vol. 58 ›› Issue (2): 355-386.doi: 10.3864/j.issn.0578-1752.2025.02.011

• 食品科学与工程 • 上一篇    下一篇

基因工程抗体功能修饰及其在农业食品安全中的应用策略

徐重新1,2(), 沈建兴1,2, 金嘉凤1,2, 何鑫1, 谢雅晶1, 张霄1, 朱庆1, 刘媛1, 刘贤金1   

  1. 1 江苏省农业科学院农产品质量安全与营养研究所/省部共建国家重点实验室培育基地—江苏省食品质量安全重点实验室,南京 210014
    2 江苏大学食品与生物工程学院,江苏镇江 212013
  • 收稿日期:2024-06-12 接受日期:2024-11-27 出版日期:2025-01-21 发布日期:2025-01-21
  • 联系方式: 徐重新,E-mail:hhxyxcx@163.com
  • 基金资助:
    江苏省自然科学基金面上项目(BK20231384); 江苏省自然科学基金面上项目(1009); 国家重点研发计划政府间国际合作重点专项(2023YFE0109400)

Functional Modification of Genetically Engineered Antibodies and Their Application Strategies in Agriculture and Food Safety

XU ChongXin1,2(), SHEN JianXing1,2, JIN JiaFeng1,2, HE Xin1, XIE YaJing1, ZHANG Xiao1, ZHU Qing1, LIU Yuan1, LIU XianJin1   

  1. 1 Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Food Quality and Safety-Laboratory for Food Quality and Safety State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014
    2 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu
  • Received:2024-06-12 Accepted:2024-11-27 Published:2025-01-21 Online:2025-01-21

摘要:

基因工程抗体是抗体人工定向设计的巨大飞跃,其以重组抗原结合片段、单链抗体、纳米抗体等形式,广泛渗透应用到农业和食品安全中的各个领域;相关创新探索研究还在竞先推进,发展极为迅速。本文总结了当前基因工程抗体主要衍生形式及其依托的噬菌体、酵母、细菌、核糖体、哺乳动物细胞等抗体库搭载展示平台和相应配套的抗原特异性抗体靶向筛选体系;分析它们借助定点突变、链置换、易错PCR、DNA改组以及同源或异源抗体功能片段甚至与其他功能蛋白融合等策略,在体外开展亲和力成熟乃至提升环境胁迫稳定性等特性功能修饰的关键技术特点;概述它们采用昆虫和动物细胞、植物组织、酵母、大肠杆菌以及其他微生物等表达体系制备相应抗体蛋白状况和潜在优化策略。着重梳理基因工程抗体在产地环境危害物、农兽药投入品、真菌毒素、食源性致病微生物及其有毒代谢物、食源性过敏原等农业食品安全危害物免疫分析上的应用研究现状;同时结合笔者团队近年以Ab2β抗独特型抗体具备模拟抗原结构乃至生物活性功能的特性为理论依据,在模拟Bt Cry毒素结构及抗虫功能的Ab2β抗独特型基因工程抗体和模拟万古霉素抗金黄色葡萄球菌功能的Ab2β抗独特型基因工程抗体等方面创新研发的系列最新成果和相关研究经验,进一步探讨了基因工程抗体在农业食品安全危害物绿色检测和绿色防控创新应用策略研究上的未来发展动向和可行捷径,为基因工程抗体在农业食品安全乃至营养品质评估等领域相关应用研究提供最新最全面的具有参考价值的文献资料和潜在启发思路。

关键词: 基因工程抗体, 抗体亲和成熟, 抗体蛋白表达, 免疫检测, 抗独特型抗体, 杀虫抗体, 杀菌抗体

Abstract:

Genetically engineered antibodies (GEAbs) represent a giant leap forward in the artificial directed design of antibodies. They exist in forms such as recombinant antigen binding fragment, single chain variable fragment and nanobodies, etc., and have been widely used in various fields of agricultural and food safety. Relevant innovation exploration and research are still ongoing, and their development is extremely rapid. This paper summarized the main derivative forms of GEAbs, the carrying platforms of phage, yeast, ribosomal and mammalian cells on which they rely, and the corresponding antigen-specific antibody targeting screening system. The key technical characteristics of their characteristic functional modifications, such as affinity maturation and enhancement of environmental stress stability, were analyzed through strategies, such as site-directed mutagenesis, chain-shuffling, error-prone PCR, DNA shuffling, homologous or heterologous antibody functional fragments and functional protein fusion. The preparation of corresponding antibody proteins using the expression systems of insect and animal cells, plant tissues, yeast, Escherichia coli (E. coli) and other microorganisms and the potential optimization strategies were summarized too. The application and research status of GEAbs in the immunoassay of agricultural and food safety hazards, such as environmental hazards of origin growing area, pesticides and veterinary drugs inputs, mycotoxins, foodborne pathogenic microorganisms and their toxic metabolites, foodborne allergens were reviewed. Combined with the latest achievements and research experience in the innovative research and development of the simulants for simulating Bt Cry toxin structure and even anti-insect function of Ab2β anti-idiotypic GEAbs and for simulating vancomycin anti-Staphylococcus aureus (S. aureus) function of Ab2β anti-idiotypic GEAbs from author’s team, which is based on the theoretical basis that Ab2β anti-idiotypic antibody, could simulate the structure of antigen and even the function of biological activity. The future development trend and feasible shortcut of GEAbs in green detection and green prevention and control of agricultural and food safety hazards were further discussed. This paper was expected to provide the latest and comprehensive literature with reference value and potential inspiration for the application of GEAbs in the fields of agricultural, food safety and nutrition quality assessment.

Key words: genetically engineered antibody, antibody affinity maturation, expression of antibody protein, immunoassay, anti- idiotype antibody, insecticidal antibody, bactericidal antibody