31824-95-0Relevant academic research and scientific papers
Monochalcoplatin: An Actively Transported, Quickly Reducible, and Highly Potent PtIV Anticancer Prodrug
Ma, Lili,Wang, Na,Ma, Rong,Li, Cai,Xu, Zoufeng,Tse, Man-Kit,Zhu, Guangyu
, p. 9098 - 9102 (2018)
Recently, PtIV prodrugs have attracted much attention as the next generation of platinum-based antineoplastic drug candidates. Here we report the discovery and evaluation of monochalcoplatin, a monocarboxylated PtIV prodrug that is among the most cytotoxic PtIV prodrugs to date. Compared with its dicarboxylated counterpart chalcoplatin, monochalcoplatin accumulates astonishingly effectively and rapidly in cancer cells, which is not ascribed to its lipophilicity. The prodrug is quickly reduced, causes DNA damage, and induces apoptosis, resulting in superior cytotoxicity with IC50 values in the nanomolar range in both cisplatin-sensitive and -resistant cells; these IC50 values are up to 422-fold higher than that of cisplatin. A detailed mechanistic study reveals that monochalcoplatin actively enters cells through a transporter-mediated process. Moreover, monochalcoplatin shows significant antitumor activity in an in vivo colorectal tumor model. Our study implies a practical strategy for the design of more effective PtIV prodrugs to conquer drug resistance by tuning both cellular uptake pathways and activation processes.
Chalcoplatin, a dual-targeting and p53 activator-containing anticancer platinum(iv) prodrug with unique mode of action
Ma, Lili,Ma, Rong,Wang, Yiping,Zhu, Xiaoyue,Zhang, Junliang,Chan, Hoi Ching,Chen, Xianfeng,Zhang, Wenjun,Chiu, Sung-Kay,Zhu, Guangyu
, p. 6301 - 6304 (2015)
Complexation of cisplatin with a p53 activator as a single anticancer agent resulted in synergistically improved cytotoxicity in p53 wild-type but not p53 null human cancer cells. Mechanistic investigation was carried out on this dual-targeting Pt(iv) prodrug, chalcoplatin. The prodrug effectively entered cancer cells and arrested the cell cycle at the S and G2/M phases, distinctive of that from cisplatin. Chalcoplatin significantly induced p53 activation as well as the subsequent apoptosis pathways. This unique mode of action renders chalcoplatin remarkably cytotoxic and makes this compound among the first examples of a Pt(iv) prodrug that directly interacts with the downstream pathway after the formation of Pt-DNA lesions. This journal is
CYTOTOXIC PLATINUM COMPLEX, ITS PREPARATION AND THERAPEUTIC USE
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Paragraph 0164; 0169, (2018/06/15)
Platinum(IV) complexes especially suitable for antitumor therapy and methods for their preparation. Further provided is a method for treating a subject, in particular a human, suffering from a disease comprising administering a platinum(IV) complex of the present invention, which disease is especially preferably but not exclusively a cancer. Further provided is a method of inhibiting the growth of tumor cells by contacting the cells with a platinum(IV) complex of the present invention and a pharmaceutical composition comprising a platinum(IV) complex of the present invention. The platinum(IV) complexes of the present invention represent a novel class of platinum anticancer prodrugs for the treatment of diseases especially of cancer. The platinum(IV) complexes of the present invention exhibit advantageously high cytotoxic activity in various cancer types superior to commonly used platinum-based complexes. In addition, the complexes proved to be highly effective even against cisplatin-resistant cancers.
