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Anti-cancer activity of plant-produced HPV16 E7 vaccine

机译:植物生产的HPV16 E7疫苗的抗癌活性

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The E7 oncoprotein from Human Papilloma Virus (HPV) is an attractive candidate for anti-cancer vaccine development. In this study, we engineered HPV16 E7 coding sequence (wild type or mutagenized sequence, E7GGG) as fusions to beta-1,3-1,4-glucanase (LicKM) of Clostridium thermocellum and produced in Nicotiana benthamiana plants using a transient expression system. Target antigens were purified and evaluated in mice for their potential as prophylactic and therapeutic vaccine candidates. Both fusion proteins induced E7-specific IgG and cytotoxic T-cell responses and protected mice against challenge with E7-expressing tumor cells. Furthermore, when administered after challenge, these plant-produced antigens prevented tumor development.
机译:来自人乳头瘤病毒(HPV)的E7癌蛋白是抗癌疫苗开发的诱人候选人。在这项研究中,我们设计了HPV16 E7编码序列(野生型或诱变序列,E7GGG)与热纤梭菌的β-1,3-1,4-葡聚糖酶(LicKM)融合,并使用瞬时表达系统在本氏烟草植物中生产。纯化靶抗原并在小鼠中评估其作为预防和治疗候选疫苗的潜力。两种融合蛋白均诱导E7特异性IgG和细胞毒性T细胞反应,并保护小鼠免受表达E7的肿瘤细胞的攻击。此外,在激发后施用时,这些植物产生的抗原阻止了肿瘤的发展。

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