Slack Clancy C, Finbloom Joel A, Jeong Keunhong, Bruns Carson J, Wemmer David E, Pines Alexander, Francis Matthew B
Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
Chem Commun (Camb). 2017 Jan 17;53(6):1076-1079. doi: 10.1039/c6cc09302g.
We report a CB6 rotaxane for the Xe hyperCEST NMR detection of matrix metalloprotease 2 (MMP-2) activity. MMP-2 is overexpressed in cancer tissue, and hence is a cancer marker. A peptide containing an MMP-2 recognition sequence was incorporated into the rotaxane, synthesized via CB6-promoted click chemistry. Upon cleavage of the rotaxane by MMP-2, CB6 became accessible for Xe@CB6 interactions, leading to protease-responsive hyperCEST activation.
我们报道了一种用于通过氙气(Xe)的化学交换饱和转移(hyperCEST)核磁共振检测基质金属蛋白酶2(MMP-2)活性的CB6轮烷。MMP-2在癌组织中过表达,因此是一种癌症标志物。通过CB6促进的点击化学合成的轮烷中掺入了含有MMP-2识别序列的肽。当MMP-2切割轮烷时,CB6可用于Xe@CB6相互作用,从而导致蛋白酶响应性的hyperCEST激活。