A comparative assessment of α-lipoic acid N-phenylamides as non-steroidal androgen receptor antagonists both on and off gold nanoparticles
作者:Luke C. Henderson、Jarrad M. Altimari、Gail Dyson、Linden Servinis、Birunthi Niranjan、Gail P. Risbridger
DOI:10.1016/j.bioorg.2011.11.007
日期:2012.2
A group of alpha-lipoic acid N-phenylamides were synthesized employing a variety of amide coupling protocols utilizing electron deficient anilines. These compounds were then assessed for their ability to block androgen-stimulated proliferation of a human prostate cancer cell line, LNCaP. These structurally simple compounds displayed anti-proliferative activities at, typically, 5-20 mu M concentrations and were comparable to a commonly used anti-androgen Bicalutamide (R). The inclusion of a disulfide (RS-SR) moiety, serving as an anchor to several metal nanoparticle systems (Au, Ag, Fe2O3, etc.), does not impede any biological activity. Conjugation of these compounds to a gold nanoparticle surface resulted in a high degree of cellular toxicity, attributed to the absence of a biocompatible group such as PEG within the organic scaffold. (C) 2011 Elsevier Inc. All rights reserved.