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Stable 293 T and CHO cell lines expressing cleaved stable HIV-1 envelope glycoprotein trimers for structural and vaccine studies

机译:表达分裂的稳定的HIV-1包膜糖蛋白三聚体的稳定293T和CHO细胞系用于结构和疫苗研究

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摘要

BackgroundRecombinant soluble, cleaved HIV-1 envelope glycoprotein SOSIP.664 gp140 trimers based on the subtype A BG505 sequence are being studied structurally and tested as immunogens in animals. For these trimers to become a vaccine candidate for human trials, they would need to be made in appropriate amounts at an acceptable quality. Accomplishing such tasks by transient transfection is likely to be challenging. The traditional way to express recombinant proteins in large amounts is via a permanent cell line, usually of mammalian origin. Making cell lines that produce BG505 SOSIP.664 trimers requires the co-expression of the Furin protease to ensure that the cleavage site between the gp120 and gp41 subunits is fully utilized.
机译:背景重组的,可裂解的HIV-1包膜糖蛋白SOSIP.664基于A BG505亚型的gp140三聚体正在结构上进行研究,并作为动物的免疫原进行了测试。为了使这些三聚体成为用于人体试验的疫苗候选者,需要以可接受的质量制备适当量的三聚体。通过瞬时转染完成此类任务可能具有挑战性。大量表达重组蛋白的传统方法是通过通常来自哺乳动物的永久细胞系。制备产生BG505 SOSIP.664三聚体的细胞系需要弗林蛋白酶的共表达,以确保充分利用gp120和gp41亚基之间的切割位点。

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