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Cell Permeable Stapled Peptide Inhibitor of Wnt Signaling that Targets β-Catenin Protein-Protein Interactions
Cell Chemical Biology ( IF 6.6 ) Pub Date : 2017-07-27 , DOI: 10.1016/j.chembiol.2017.06.013
Laura Dietrich 1 , Bernd Rathmer 2 , Kenneth Ewan 3 , Tanja Bange 4 , Stefan Heinrichs 5 , Trevor C Dale 3 , Dennis Schade 6 , Tom N Grossmann 7
Affiliation  

The Wnt signaling pathway plays a critical role in cell proliferation and differentiation, thus it is often associated with diseases such as cancers. Unfortunately, although attractive, developing anti-cancer strategy targeting Wnt signaling has been challenging given that the most attractive targets are involved in protein-protein interactions (PPIs). Here, we develop a stapled peptide inhibitor that targets the interaction between β-catenin and T cell factor/lymphoid enhancer-binding factor transcription factors, which are crucially involved in Wnt signaling. Our integrative approach combines peptide stapling to optimize proteolytic stability, with lessons learned from cell-penetrating peptide (CPP) design to maximize cellular uptake resulting in NLS-StAx-h, a selective, cell permeable, stapled peptide inhibitor of oncogenic Wnt signaling that efficiently inhibits β-catenin-transcription factor interactions. We expect that this type of integrative strategy that endows stapled peptides with CPP features will be generally useful for developing inhibitors of intracellular PPIs.

中文翻译:


针对 β-连环蛋白-蛋白质相互作用的 Wnt 信号传导的细胞渗透性钉合肽抑制剂



Wnt信号通路在细胞增殖和分化中发挥着关键作用,因此通常与癌症等疾病相关。不幸的是,虽然有吸引力,但鉴于最有吸引力的靶标涉及蛋白质-蛋白质相互作用(PPI),开发针对 Wnt 信号传导的抗癌策略一直具有挑战性。在这里,我们开发了一种钉合肽抑制剂,该抑制剂针对 β-连环蛋白和 T 细胞因子/淋巴增强子结合因子转录因子之间的相互作用,这些转录因子在 Wnt 信号传导中至关重要。我们的综合方法结合了肽装订以优化蛋白水解稳定性,并从细胞穿透肽 (CPP) 设计中汲取经验教训,以最大限度地提高细胞摄取,从而产生 NLS-StAx-h,这是一种选择性、细胞可渗透性、致癌 Wnt 信号传导的装订肽抑制剂,可有效抑制 β-catenin-转录因子相互作用。我们预计这种赋予钉合肽 CPP 特征的整合策略将普遍用于开发细胞内 PPI 抑制剂。
更新日期:2017-07-28
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