Evaluation of carbohydrate-cysteamine thiazolidines as pro-drugs for the treatment of cystinosis
作者:Yasaman Ramazani、Elena N. Levtchenko、Lambertus Van Den Heuvel、Ann Van Schepdael、Prasanta Paul、Ekaterina A. Ivanova、Anna Pastore、Trina M. Hartman、Neil P.J. Price
DOI:10.1016/j.carres.2016.12.003
日期:2017.2
in poor patient compliance. Halitosis is mainly caused by the formation of dimethylsulfide as the final product in the cysteamine metabolism pathway. We have synthesized carbohydrate-cysteamine thiazolidines, and hypothesized that the hydrolytic breakdown of cysteamine-thiazolidines can result in free cysteamine being released in target organs. To examine our hypothesis, we tested these analogs in vitro
胱氨酸病是由胱氨酸酶的功能障碍引起的遗传性疾病,其特征在于胱氨酸的蓄积。半胱胺是用于胱氨酸病的药物,可引起口臭,导致患者依从性差。口臭主要是由半胱胺代谢途径中最终产物二甲基硫的形成引起的。我们已经合成了碳水化合物-半胱胺噻唑烷,并假设半胱胺-噻唑烷的水解分解可导致游离半胱胺在靶器官中释放。为了检验我们的假设,我们在患者来源的成纤维细胞中体外测试了这些类似物。用不同浓度的阿拉伯糖-半胱胺,葡萄糖-半胱胺和麦芽糖-半胱胺处理膀胱移行成纤维细胞。我们证明了类似物在细胞外分解为半胱胺,因此在前药的形式下可能不会被细胞完全吸收。为了使这些类似物作为前药的潜力,有必要对其进行细胞内而不是细胞外分解的类似物进行潜在修饰。