Synthesis and Initial Biological Evaluation of Boron-Containing Prostate-Specific Membrane Antigen Ligands for Treatment of Prostate Cancer Using Boron Neutron Capture Therapy
作者:Sinan Wang、Charles Blaha、Raquel Santos、Tony Huynh、Thomas R. Hayes、Denis R. Beckford-Vera、Joseph E. Blecha、Andrew S. Hong、Miko Fogarty、Thomas A. Hope、David R. Raleigh、David M. Wilson、Michael J. Evans、Henry F. VanBrocklin、Tomoko Ozawa、Robert R. Flavell
DOI:10.1021/acs.molpharmaceut.9b00464
日期:2019.9.3
Boron neutron capture therapy (BNCT) is a therapeutic modality which has been used for the treatment of cancers, including brain and head and neck tumors. For effective treatment via BNCT, efficient and selective delivery of a high boron dose to cancer cells is needed. Prostate-specific membrane antigen (PSMA) is a target for prostate cancer imaging and drug delivery. In this study, we conjugated boronic
硼中子俘获疗法(BNCT)是一种治疗方法,已用于治疗癌症,包括脑癌和头颈部肿瘤。为了通过BNCT进行有效治疗,需要将高剂量的硼有效且选择性地递送至癌细胞。前列腺特异性膜抗原(PSMA)是前列腺癌成像和药物输送的靶标。在这项研究中,我们将硼酸或碳硼烷官能团缀合到完善的PSMA抑制剂支架上,以将硼递送至前列腺癌细胞和前列腺肿瘤异种移植模型。合成了八种含硼的PSMA抑制剂。所有这些化合物在竞争性放射性配体结合试验中均表现出对PSMA的强结合亲和力(IC50为555.7至20.3 nM)。对小鼠施用了三种选择的化合物1a,1d和1f,并通过正电子发射断层扫描(PET)成像和生物分布实验证明了它们对68Ga-PSMA-11摄取的体内阻断作用。生物分布分析表明,与最常用的BNCT化合物4-硼烷-1-苯丙氨酸(BPA)的比率相比,在22Rv1前列腺异种移植肿瘤中硼吸收为4-7μg/ g,并且肿瘤/肌肉的