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Cathepsin B cleavable novel prodrug Ac-Phe-Lys-PABC-ADM enhances efficacy at reduced toxicity in treating gastric cancer peritoneal carcinomatosis: an experimental study.
Cancer ( IF 6.1 ) Pub Date : 2011-10-19 , DOI: 10.1002/cncr.26596
Li-Hua Shao 1 , Shao-Ping Liu , Jin-Xuan Hou , Yan-Hua Zhang , Chun-Wei Peng , Yan-Jun Zhong , Xiong Liu , Xiu-Li Liu , Ya-Ping Hong , Raymond A Firestone , Yan Li
Affiliation  

BACKGROUND Doxorubicin (Adriamycin) is effective in gastric cancer treatment, but with severe dose-dependent toxicities. A novel prodrug of doxorubicin (Ac-Phe-Lys-PABC-ADM) is designed to deliver free doxorubicin relying on cathepsin B and reduce side effects. The authors examined the antitumor effect and toxicities of Ac-Phe-Lys-PABC-ADM against gastric cancer peritoneal carcinomatosis. METHODS SGC-7901 gastric cancer cell line was used for the study. The in vitro study investigated the effects of doxorubicin and Ac-Phe-Lys-PABC-ADM on cell growth dynamics and cell cycle. The in vivo study investigated the efficacy and toxicity of Ac-Phe-Lys-PABC-ADM on a nude mice model of peritoneal carcinomatosis, with doxorubicin as positive control. RESULTS In the in vitro study, Ac-Phe-Lys-PABC-ADM had a lower dose-dependent inhibitory effect on SGC-7901 cells. In the in vivo study of control, doxorubicin, and Ac-Phe-Lys-PABC-ADM groups, the median experimental peritoneal carcinomatosis indexes were 6, 1.5, and 1, respectively (P = .004); the body weights were 24.32 ± 1.40 g, 18.40 ± 2.97 g, and 23.61 ± 0.80 g, respectively (P = .000). Biochemical studies showed that Ac-Phe-Lys-PABC-ADM had significantly lower toxicities on the bone marrow, liver, kidney, and particularly heart. Histopathological studies of the control, doxorubicin, and Ac-Phe-Lys-PABC-ADM groups found significant myocardium toxicities in 3, 7, and 4 animals, respectively. CONCLUSIONS Ac-Phe-Lys-PABC-ADM could be an effective molecular targeting drug to treat gastric cancer peritoneal carcinomatosis with enhanced efficacy and reduced toxicity.

中文翻译:

组织蛋白酶B可裂解的新药前体Ac-Phe-Lys-PABC-ADM在降低毒性方面提高了治疗胃癌腹膜癌的功效:一项实验研究。

背景技术阿霉素(阿霉素)在胃癌治疗中有效,但是具有严重的剂量依赖性毒性。一种新的阿霉素前药(Ac-Phe-Lys-PABC-ADM)设计用于释放依赖组织蛋白酶B的游离阿霉素并减少副作用。作者研究了Ac-Phe-Lys-PABC-ADM对胃癌腹膜癌的抗肿瘤作用和毒性。方法采用SGC-7901胃癌细胞株进行研究。体外研究研究了阿霉素和Ac-Phe-Lys-PABC-ADM对细胞生长动力学和细胞周期的影响。体内研究以阿霉素为阳性对照,研究了Ac-Phe-Lys-PABC-ADM对腹膜癌裸鼠模型的功效和毒性。结果在体外研究中,Ac-Phe-Lys-PABC-ADM对SGC-7901细胞具有较低的剂量依赖性抑制作用。在对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的体内研究中,实验性腹膜癌变指数的中位数分别为6、1.5和1(P = 0.004);体重分别为24.32±1.40 g,18.40±2.97 g和23.61±0.80 g(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。在对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的体内研究中,实验性腹膜癌变指数的中位数分别为6、1.5和1(P = 0.004);体重分别为24.32±1.40 g,18.40±2.97 g和23.61±0.80 g(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。在对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的体内研究中,实验性腹膜癌的中位指数分别为6、1.5和1(P = 0.004);体重分别为24.32±1.40 g,18.40±2.97 g和23.61±0.80 g(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。实验性腹膜癌的中位指数分别为6、1.5和1(P = 0.004);体重分别为24.32±1.40 g,18.40±2.97 g和23.61±0.80 g(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。实验性腹膜癌的中位指数分别为6、1.5和1(P = 0.004);体重分别为24.32±1.40 g,18.40±2.97 g和23.61±0.80 g(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。分别为(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。分别为(P = .000)。生化研究表明,Ac-Phe-Lys-PABC-ADM对骨髓,肝脏,肾脏,尤其是心脏的毒性显着降低。对照组,阿霉素和Ac-Phe-Lys-PABC-ADM组的组织病理学研究分别在3、7和4只动物中发现了明显的心肌毒性。结论Ac-Phe-Lys-PABC-ADM可以作为治疗胃癌腹膜癌的有效分子靶向药物,具有增强的疗效和降低的毒性。
更新日期:2011-10-17
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