Water-Soluble closo-Docecaborate-Containing Pteroyl Derivatives Targeting Folate Receptor-Positive Tumors for Boron Neutron Capture Therapy
作者:Fumiko Nakagawa、Hidehisa Kawashima、Taiki Morita、Hiroyuki Nakamura
DOI:10.3390/cells9071615
日期:——
pteroyl-closo-dodecaborate conjugates (PBCs 1–4), were developed as folate receptor (FRα) targeting boron carriers for boron neutron capture therapy (BNCT). PBCs 1–4 had adequately low cytotoxicity with IC50 values in the range of 1~3 mM toward selected human cancer cells, low enough to use as BNCT boron agents. PBCs 1–3 showed significant cell uptake by FRα positive cells, especially U87MG glioblastoma
水溶性pteroyl-闭合碳-dodecaborate缀合物(的PBC 1-4),分别作为叶酸受体(FRα)靶向硼载体用于硼中子俘获治疗(BNCT)开发。PBC 1-4对选定的人类癌细胞具有足够低的细胞毒性,IC 50值在1-3 mM范围内,足以用作BNCT硼剂。尽管PBC 4的蓄积量比PBC 1–3和L-4-boronophenylalanine(L-BPA)低,但PBC 1–3显示出大量被FRα阳性细胞摄取的细胞,特别是U87MG胶质母细胞瘤细胞。通过增加培养基中叶酸的浓度来阻止HeLa细胞对PBC 1和PBC 3的细胞摄取,这表明PBC 1-3的主要摄取机制主要是通过FRα受体介导的内吞作用。