Particles were grafted with N-[N-[(S)-1,3-dicarboxypropyl] carbamoyl]-(S)-lysine (DCL) in order to bind, via strong hydrogen bonds, prostate-specific membrane antigen (PSMA), which is a transmembrane glycoprotein that is overexpressed by 100–1000 times in PCa cells by means of a further increased expression in metastatic and castration-resistant carcinomas [109]. Here, FOLH1 is linked to carcinoma.