Design of Enzymatically Cleavable Prodrugs of a Potent Platinum-Containing Anticancer Agent
作者:Song Ding、Amanda J. Pickard、Gregory L. Kucera、Ulrich Bierbach
DOI:10.1002/chem.201404675
日期:2014.12.1
approach, a new class of potential ester prodrugs of highly potent, but systemically too toxic, platinum–acridine anticanceragents was generated. The new hybrids contain a hydroxyl group, which has been masked with a cleavable lipophilic acyl moiety. Both butanoic (butyric) and bulkier 2‐propanepentanoic (valproic) esters were introduced. The goals of this design were to improve the drug‐like properties
lanthanide toolbox for multi-modal, non-invasive tumor specific theranostic prodrugs
申请人:Hong Kong Baptist University
公开号:US20180078564A1
公开(公告)日:2018-03-22
The present disclosure relates to theranostic prodrugs with responsive signals in-vitro or in-vivo and uses thereof. It also relates to synthesized europium complexes for evaluating the binding with integrin αvβ3.
Lanthanoplatins: emissive Eu(<scp>iii</scp>) and Tb(<scp>iii</scp>) complexes staining nucleoli targeted through Pt–DNA crosslinking
作者:Khushbu Singh、Swati Singh、Payal Srivastava、Sri Sivakumar、Ashis K. Patra
DOI:10.1039/c7cc02047c
日期:——
Luminescent photostable heterometallic LnPt2complexes were designed for their preferential nucleoli staining through formation of Pt–DNA cross-links observed through fluorescence microscopy.
Polynuclear platinum complexes constitute a special class of hopeful antitumor agents. In this study, a Y-type monofunctional trinuclear platinum complex (MTPC) with 1,3,5-tris(pyridin-2-ylmethoxy)benzene, ammine and chloride as ligands was synthesized and characterized by H-1 NMR and electrospray ionization mass spectrometry (ESI-MS). The DNA binding mode of MTPC was investigated using circular dichroism spectroscopy and gel electrophoresis, and the reactivity of MTPC towards glutathione was studied by H-1 NMR and ESI-MS. The results show that MTPC can affect the conformation of calf-thymus DNA (CT-DNA) significantly and tends to form 1,4-GG rather than 1,2-GG intrastrand crosslinks, which are different from the instance of cisplatin. MTPC reacts with glutathione quite slowly in comparison with cisplatin because of the steric hindrance. The cytotoxicity of MTPC was tested on the human breast cancer cell line MCF-7, the human non-small-cell lung cancer cell line A549, and the human ovarian cancer cell line Skov-3 by the MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay. MTPC is more potent than or comparable to cisplatin. The cellular inhibition mode of MTPC was examined by flow cytometry using MCF-7 cells. MTPC arrests the cell cycle mainly in G2 or M phase, while cisplatin arrests the cell cycle in S phase. Similar to cisplatin, MTPC kills the cells predominantly through an apoptotic pathway. (C) 2014 Elsevier Inc. All rights reserved.
Synthesis, Structure, and Biological Activity of New Azine‐Bridged Dinuclear Platinum(
<scp>II</scp>
) Complexes − a New Class of Anticancer Compounds
作者:Ganna V. Kalayda、Seiji Komeda、Kyoko Ikeda、Takaji Sato、Masahiko Chikuma、Jan Reedijk
DOI:10.1002/ejic.200300315
日期:2003.12
A recently described newclass of dinuclear platinum anticancer compounds, represented so far by the isomeric azine-bridged complexes [cis-Pt(NH3)2Cl}2(µ-pzn)]Cl2 (1) (pzn = pyrazine), [cis-Pt(NH3)2Cl}2(µ-pmn)]Cl2 (2) (pmn = pyrimidine) and [cis-Pt(NH3)2Cl}2(µ-pdn)](NO3)2 (3) (pdn = pyridazine), has been added to. Three new dinuclear complexes of this type, [cis-Pt(NH3)2Cl}2(µ-2,5pzn)]Cl2 (4) (2