曲沙他滨是一种具有非天然 L 构型的细胞毒性脱氧胞苷类似物,可被脱氧胞苷激酶 (dCK) 激活。与其他脱氧核苷类似物相比,这种构型是造成曲沙他滨吸收和代谢差异的原因。使用大多数核苷抗癌剂的主要缺点源于它们的亲水性,该特性需要高且频繁的静脉内给药剂量。为了克服这个问题,开发了几种在氨基中修饰的具有更高亲脂性的线性脂肪族链的曲沙他滨前药。为了确定这些前药是否比曲沙他滨具有优势,将胰腺癌细胞系暴露于曲沙他滨和亲脂性前药。
作者:A. D. Adema、M. Radi、J. Daft、J. Narayanasamy、E. K. Hoebe、L. E. Alexander、C. K. Chu、G. J. Peters
DOI:10.1080/15257770701515591
日期:2007.11.26
several troxacitabine prodrugs modified in the aminogroup with a linear aliphatic chain with a higher lipophilicity were developed. To determine whether these prodrugs have an advantage over Troxacitabine pancreaticcancer cell lines were exposed to Troxacitabine and the lipophilic prodrugs. The addition of linear aliphatic chains to troxacitabine increased sensitivity of pancreaticcancer cell lines to the
曲沙他滨是一种具有非天然 L 构型的细胞毒性脱氧胞苷类似物,可被脱氧胞苷激酶 (dCK) 激活。与其他脱氧核苷类似物相比,这种构型是造成曲沙他滨吸收和代谢差异的原因。使用大多数核苷抗癌剂的主要缺点源于它们的亲水性,该特性需要高且频繁的静脉内给药剂量。为了克服这个问题,开发了几种在氨基中修饰的具有更高亲脂性的线性脂肪族链的曲沙他滨前药。为了确定这些前药是否比曲沙他滨具有优势,将胰腺癌细胞系暴露于曲沙他滨和亲脂性前药。
In Vitro Optimization of Non-Small Cell Lung Cancer Activity with Troxacitabine, <scp>l</scp>-1,3-Dioxolane-cytidine, Prodrugs
作者:Marco Radi、Auke D. Adema、Jonathan R. Daft、Jong H. Cho、Eveline K. Hoebe、Lou-Ella M. M. Alexander、Godefridus J. Peters、Chung K. Chu
DOI:10.1021/jm0612923
日期:2007.5.1
l-1,3-Dioxolane-cytidine, a potent anticancer agent against leukemia, has limited efficacy against solid tumors, perhaps due to its hydrophilicity. Herein, a library of prodrugs were synthesized to optimize in vitro antitumor activity against non-small cell lung cancer. N-4-Substituted fatty acid amide prodrugs of 10-16 carbon chain length demonstrated significantly improved antitumor activity over l-1,3-dioxolane-cytidine. These in vitro results suggest that the in vivo therapeutic efficacy of l-1,3-dioxolane-cytidine against solid tumors may be improved with prodrug strategies.
L-ODDC PRODRUGS FOR CANCER
申请人:Chu David C.K.
公开号:US20100266674A1
公开(公告)日:2010-10-21
The main drawback in the use of most nucleoside anticancer agents originates from their hydrophilic nature, of which property requires a high and frequent dosage for an intravenous administration. Unlike other nucleoside anti-tumor agents, troxacitabine appears to predominantly enter tumor cells by passive diffusion rather then by using nucleoside transporters, although this may be model dependent. Accordingly, in the present work, a small library of twenty troxacitabine prodrugs has been synthesized using a parallel approach in order to evaluate the relationship between the lipophilicity of the prodrugs and their antitumor activity. Biological evaluation of the prodrugs on two non-small cell lung cancer cell lines (A549 and SW1573) and in pancreatic cell lines clearly showed better antitumor activity than that of troxacitabine, with IC
50
values in the nanomolar range.