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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Using a baculovirus display library to identify MHC class I mimotopes
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Using a baculovirus display library to identify MHC class I mimotopes

机译:使用杆状病毒展示文库鉴定I类MHC拟表位

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摘要

We have developed a baculovirus-based display system for identifying antigen mimotopes for MHC class l-specific T cells. The mouse MHC class I molecule, D~d, was displayed on baculovirus-infected insect cells with a library of 9- and 10-mer peptides tethered via a flexible linker to the N terminus of β2 microglobulin. As a test case, the library was screened by flow cytometry by using a multimeric fluorescent αβTCR from a mouse T cell specific for D~d plus an unknown self peptide. A mimotope was identified that, when bound to D~d, stimulated the T cell to secret IL-2. The sequence of the mimotope was used to identify a self peptide present in a mouse protein. Spin. The Spin peptide, when complexed with D~d, also activated the T cell. This technique should be generally useful in identifying and manipulating MHC class I peptide mimotopes and epitopes.
机译:我们已经开发了一种基于杆状病毒的展示系统,用于识别MHC I类特异性T细胞的抗原模拟表位。小鼠I类MHC分子D〜d在杆状病毒感染的昆虫细胞中展示,其9和10聚体肽库通过柔性接头与β2微球蛋白的N末端相连。作为测试用例,通过流式细胞术筛选该文库,方法是使用多聚体荧光αβTCR,该抗体来自对D〜d具有特异性的小鼠T细胞和未知的自身肽。鉴定出模拟表位,当与D_d结合时,刺激T细胞分泌IL-2。模拟表位的序列用于鉴定小鼠蛋白质中存在的自身肽。旋转。当与D_d复合时,Spin肽也激活了T细胞。该技术通常应可用于识别和操纵MHC I类肽模拟表位和表位。

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