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Heterologous expression of human costimulatory molecule B7-2 and construction of B7-2 immobilized polyhydroxyalkanoate nanoparticles for use as an immune activation agent

机译:人类共刺激分子B7-2的异源表达和B7-2固定化聚羟基链烷酸酯纳米颗粒的构建以用作免疫激活剂

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摘要

BackgroundCostimulation of T cells via costimulatory molecules such as B7 is important for eliciting cell-mediated antitumor immunity. Presenting costimulation molecules by immobilizing recombinant B7 on the surface of nanovectors is a novel strategy for complementary therapy. Polyhydroxyalkanoates (PHAs) are a family of biodegradable, non-toxic, biocompatible polyesters, which can be used as a nonspecific immobilizing matrix for protein presentation. Recombinant protein fusion with PHA granule binding protein phasin (PhaP) can be easily immobilized on the surface of PHA nanoparticles through hydrophobic interactions between PhaP and PHA, and therefore provides a low-cost protein presenting strategy.
机译:背景技术通过共刺激分子(例如B7)共同刺激T细胞对于引发细胞介导的抗肿瘤免疫至关重要。通过将重组B7固定在纳米载体的表面上来提供共刺激分子是互补疗法的一种新策略。聚羟基链烷酸酯(PHA)是一类可生物降解的,无毒的,生物相容性的聚酯,可用作聚酯的非特异性固定基质。通过PhaP和PHA之间的疏水相互作用,可以很容易地将重组蛋白与PHA颗粒结合蛋白phasin(PhaP)融合,从而将其固定在PHA纳米颗粒的表面,从而提供了一种低成本的蛋白呈递策略。

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