The Synthesis of a Prodrug of Doxorubicin Designed to Provide Reduced Systemic Toxicity and Greater Target Efficacy
作者:Victor M. Garsky、Patricia K. Lumma、Dong-Mei Feng、Jenny Wai、Harri G. Ramjit、Mohinder K. Sardana、Allen Oliff、Raymond E. Jones、Deborah DeFeo-Jones、Roger M. Freidinger
DOI:10.1021/jm0101996
日期:2001.11.1
have been found to correlate well with the number of malignant prostate cells. The use of a prodrug which is cleaved by the enzyme PSA in the prostate should in principle produce high localized concentrations of the cytotoxic agent at the tumor site while limiting systemic exposure to the active drug. Cleavage maps following PSA treatment of human semenogelin were constructed. Systematic modification
阿霉素(Dox)可在前列腺癌中提供一定的稳定作用;然而,由于全身毒性,主要是心脏毒性和免疫抑制,其使用受到限制。设计用于允许肿瘤选择性激活的阿霉素前药的施用将减少对活性药物的全身全身暴露,从而增加治疗指数。前列腺特异抗原(PSA)是具有胰凝乳蛋白酶样活性的丝氨酸蛋白酶,是激肽释放酶基因家族的成员。PSA凭借其裂解精液蛋白精囊蛋白I和II的能力,被认为是精液的液化。已经发现血清PSA水平与恶性前列腺细胞的数量很好地相关。原则上,在前列腺中使用被PSA酶裂解的前药应在肿瘤部位产生高浓度的细胞毒剂,同时限制全身暴露于活性药物。PSA处理人精液明胶后的切割图被构建。在主要切割位点侧翼的氨基酸残基的系统修饰导致合成了一系列短肽,这些短肽可被PSA有效水解。随后将选定的肽与阿霉素偶联提供了一系列阿霉素-肽缀合物,其在体外和体内被评估为分泌PSA的肿瘤细胞的靶向前药。从这些研究中,我们选择27岁的Glu