affinity. The multivalent presentation of the anti‐tumour heptapeptide, SNTSESF, was investigated. This peptide's activity has been attributed to blockade of the PD‐1 receptor‐mediated signalling pathway. Two and four peptide units were conjugated to poly ethoxy ethyl glycinamide (PEE−G) scaffolds to prepare high‐purity products. These conjugates and the peptide were examined in a mouse model implanted
多价结构可在靶位点提供多种相互作用并提高结合亲和力。研究了抗肿瘤七肽SNT
SESF的多价形式。该肽的活性归因于PD-1受体介导的信号通路的阻断。将两个和四个肽单元与聚乙氧基乙基甘
氨酰胺(PEE-G)支架偶联,以制备高纯度产品。在植入了G
L261肿瘤的小鼠模型中检查了这些缀合物和肽,这表明在树突状支架上呈递两个以上的肽SNT
SESF副本不会增加每个肽的抗肿瘤活性。因此,在荧光偏振测定中筛选了荧光标记的肽和活性最高的多价肽结合物与人PD-L1蛋白的相互作用。没有观察到特定的SNT
SESF肽/ PD-L1相互作用的迹象。分子模型结合研究进一步支持了这一发现。