在基因稳定性,环境安全性和现场适应性方面对表达CSFV E2蛋白质的转基因大米品种进行全面评估
Hongyan Chu1, Lei Zhang1, Zhen Hao1
1International Joint Research Center of National Animal Immunology, College of Veterinary Medicine, Henan Agriculture University, Zhengzhou, China.
Frontiers in plant science
|December 18, 2025
概括
转基因大米成功地表达了几代古典猪瘟病毒 (CSFV) E2抗原. 这种基于植物的疫苗平台为全球猪业提供了稳定,安全和经济高效的替代方案.
科学领域:
- 农业生物技术 农业生物技术
- 病毒学 病毒学
- 疫苗开发 疫苗开发
背景情况:
- 经典猪瘟病毒 (CSFV) 由于其高致命性和传染性,对全球猪业构成重大威胁.
- 目前针对CSFV的减弱疫苗面临诸多挑战,包括生物安全问题和诊断限制.
研究的目的:
- 评估表达CSFV E2抗原的转基因大米的遗传稳定性,农学性能和环境安全性.
- 建立一个基础,以商业开发一种植物性猪瘟疫苗.
主要方法:
- 使用大米内精生物反应器系统表达CSFV E2抗原的转基因大米 (E2-1,E2-2) 的构建.
- 通过PCR和西班牙血栓在T1-T3代的稳定基因整合和表达的验证.
- 对农业特征和环境安全的分析,包括遗传漂移潜力.
主要成果:
- 在三代转基因大米中证实了CSFV E2基因的稳定整合和持续表达.
- 在种子中观察到一致的抗原标位 (高达2^7),表明疫苗的潜力.
- 转基因大米系表现出改善的农学特征和强大的种植适应性,没有观察到遗传漂移的风险.
结论:
- 表达CSFV E2抗原的转基因大米表现出遗传稳定性,强大的农业性能和环境安全.
- 这种植物衍生平台提供了一种安全,经济有效和可扩展的方法,用于口服亚单位生产针对古典猪瘟的疫苗.
- 这项研究提供了关键数据,用于商业化用于猪业的新型植物性疫苗.
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