Department of Chemistry, Yale University , New Haven, Connecticut 06511, United States, Department of Internal Medicine, Yale University School of Medicine , New Haven, Connecticut 06536, United States, Department of Cell Biology, Yale University School of Medicine , New Haven, Connecticut 06520, United States, Department of Cellular and Molecular Physiology, Yale University School of Medicine , New Haven, Connecticut 06520, United States, Howard Hughes Medical Institute, Yale University School of Medicine , New Haven, Connecticut 06520, United States, and Department of Molecular, Cellular and Developmental Biology, Yale University , New Haven, Connecticut 06520, United States.
Org Lett. 2013 Oct 18;15(20):5318-21. doi: 10.1021/ol402568j. Epub 2013 Oct 2.
Previous work has shown that certain β(3)-peptides can effectively mimic the side chain display of an α-helix and inhibit interactions between proteins, both in vitro and in cultured cells. Here we describe a β(3)-peptide analog of GLP-1, CC-3(Act), that interacts with the GLP-1R extracellular domain (nGLP-1R) in vitro in a manner that competes with exendin-4 and induces GLP-1R-dependent cAMP signaling in cultured CHO-K1 cells expressing GLP-1R.
先前的工作表明,某些β(3)-肽可以有效地模拟α-螺旋的侧链展示,并抑制蛋白质之间的相互作用,无论是在体外还是在培养的细胞中。在这里,我们描述了一种 GLP-1 的 β(3)-肽类似物 CC-3(Act),它以与 exendin-4 竞争的方式与 GLP-1R 的细胞外结构域(nGLP-1R)相互作用,并在表达 GLP-1R 的 CHO-K1 细胞中诱导 GLP-1R 依赖性 cAMP 信号转导。