prostate. It is an attractive biomarker for imaging metastatic prostate cancer because of its overexpression in advanced prostate cancer and the location of its active site on the cell surface. We designed and synthesized novel hepsin-targeted imaging probes by conjugating the hepsin-binding ligand with near-infrared (NIR) optical dyes. The Leu-Arg dipeptides, attached to BODIPY or SulfoCy7, exhibited
肝素是II型
丝氨酸蛋白酶,在赘生性前列腺中高表达。由于它在晚期前列腺癌中过表达以及其活跃位点在细胞表面的位置,因此它是用于转移性前列腺癌成像的有吸引力的
生物标志物。我们通过结合近红外(NIR)光学
染料与
肝素结合的
配体,设计并合成了针对
肝素的新型成像探针。连接到BODIPY或SulfoCy7的Leu-Arg二肽显示出强大的
肝素抑制活性,Ki值分别为21和22 nM。化合物2在过表达
肝素的细胞中显示出选择性的摄取和保留。这是针对
肝素的光学探针的首次报道,该探针具有较强的结合亲和力,并且相对于苹果酸酶具有高选择性。