期刊
MOLECULES
卷 23, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/molecules23061463
关键词
prodrug; targeted chemotherapy; thapsigargin; mipsagargin; solid-phase peptide synthesis: cytotoxin-peptide conjugation
资金
- Danish Research Council for Independent Research vertical bar Nature and Universe [10-085264]
Since cells in solid tumors divide less rapidly than cells in the bone marrow or cells of the immune system, mitotic inhibitors often cause severe side effects when used for treatment of diseases like prostate cancer and breast cancer. One approach to overcome this problem involves attempts at developing drugs based on general cytotoxins, like calicheamicin and thapsigargin, which kill cells at all phases of the cell cycle. However, such toxins can only be used when efficient targeting to the malignant tissue is possible. In the case of thapsigargin, selectivity for tumor-associated cells is achieved by conjugating the drug to a peptide that is only cleaved in the vicinity of tumors to release the cytotoxic drug or an analog with retained activity. Solid-phase synthesis protocols were developed for preparation of three already validated prodrugs of thapsigargin: one prodrug cleavable by human kallikrein 2, one prodrug cleavable by prostate-specific antigen, and one prodrug cleavable by prostate-specific membrane antigen.
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