Novel octapeptide-DTX prodrugs targeting MMP-7 as effective agents for the treatment of colorectal cancer with lower systemic toxicity
作者:Zheng-Yu Liu、Mei-Lin Tang、Jin-Feng Ning、Yun-Peng Hao、Lu Zhou、Xun Sun
DOI:10.1016/j.ejmech.2020.112194
日期:2020.5
achieve the new indication of DTX for CRC. In this study, a series of MMP-7 activated octapeptide-DTX/4FDT prodrugs (6a-10a and 6b-10b) were designed and synthesized based on the features of MMP-7 which is highly expressed in CRC and could specially recognize octapeptides with specific sequences. Among them, 9a and 9b, both possessing an octapeptide Gly-Pro-Gln-Gly-Ile-Ala-Met-Gln moiety, were the most
大肠癌(CRC)是全球第三大常见癌症,也是导致癌症死亡的第四大主要原因。当前的CRC治疗显示出高的副作用发生率。多西他赛(DTX)是一种广泛用于癌症化学疗法的重要药物,在CRC中显示出严重的毒性。降低DTX的毒性可能是实现DTX用于CRC的新适应症的可行且有希望的方法。在这项研究中,根据在CRC中高表达的MMP-7的特征设计并合成了一系列MMP-7激活的八肽-DTX / 4FDT前药(6a-10a和6b-10b),并可以特异性识别八肽。特定序列。其中9a和9b都具有八肽Gly-Pro-Gln-Gly-Ile-Ala-Met-Gln的部分,是最有效的前药。还测试了化合物9a和9b在HCT116细胞培养液和肿瘤匀浆中的释放率,以及体内抗CRC活性和全身毒性。由于9a在带有CRC肿瘤的小鼠中显示出比9b更好的抗CRC活性和更低的全身毒性,因此与它的母体药物DTX相比,它的急性毒性,药代动力学和组