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Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells
by
Sen, Vasily
, Cetraz, Maria
, Golubev, Valery
, Hartwig, Andrea
, Schoch, Sarah
, Köberle, Beate
, Streule, Karolin
in
Antineoplastic Agents - chemistry
/ Antineoplastic Agents - pharmacology
/ Biomedical and Life Sciences
/ Biomedicine
/ Bladder cancer
/ Cell Line, Tumor
/ Cell Survival - drug effects
/ Chemistry Techniques, Synthetic
/ Chemotherapy
/ Cisplatin - pharmacology
/ Cytotoxicity
/ Deoxyribonucleic acid
/ DNA
/ DNA - chemistry
/ DNA Breaks - drug effects
/ Drug Resistance, Neoplasm - drug effects
/ Environmental Health
/ Humans
/ Molecular Toxicology
/ Nitrogen Oxides - chemistry
/ Occupational Medicine/Industrial Medicine
/ Pharmacology/Toxicology
/ Platinum - chemistry
/ Platinum - pharmacokinetics
/ Platinum Compounds - chemistry
/ Platinum Compounds - pharmacology
/ Urinary Bladder Neoplasms - drug therapy
/ Urinary Bladder Neoplasms - pathology
2017
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Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells
by
Sen, Vasily
, Cetraz, Maria
, Golubev, Valery
, Hartwig, Andrea
, Schoch, Sarah
, Köberle, Beate
, Streule, Karolin
in
Antineoplastic Agents - chemistry
/ Antineoplastic Agents - pharmacology
/ Biomedical and Life Sciences
/ Biomedicine
/ Bladder cancer
/ Cell Line, Tumor
/ Cell Survival - drug effects
/ Chemistry Techniques, Synthetic
/ Chemotherapy
/ Cisplatin - pharmacology
/ Cytotoxicity
/ Deoxyribonucleic acid
/ DNA
/ DNA - chemistry
/ DNA Breaks - drug effects
/ Drug Resistance, Neoplasm - drug effects
/ Environmental Health
/ Humans
/ Molecular Toxicology
/ Nitrogen Oxides - chemistry
/ Occupational Medicine/Industrial Medicine
/ Pharmacology/Toxicology
/ Platinum - chemistry
/ Platinum - pharmacokinetics
/ Platinum Compounds - chemistry
/ Platinum Compounds - pharmacology
/ Urinary Bladder Neoplasms - drug therapy
/ Urinary Bladder Neoplasms - pathology
2017
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![Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells](https://www.mbrl.ae/o/mbrl-theme/images/site-assets/generic/no-book-image.png)
Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells
by
Sen, Vasily
, Cetraz, Maria
, Golubev, Valery
, Hartwig, Andrea
, Schoch, Sarah
, Köberle, Beate
, Streule, Karolin
in
Antineoplastic Agents - chemistry
/ Antineoplastic Agents - pharmacology
/ Biomedical and Life Sciences
/ Biomedicine
/ Bladder cancer
/ Cell Line, Tumor
/ Cell Survival - drug effects
/ Chemistry Techniques, Synthetic
/ Chemotherapy
/ Cisplatin - pharmacology
/ Cytotoxicity
/ Deoxyribonucleic acid
/ DNA
/ DNA - chemistry
/ DNA Breaks - drug effects
/ Drug Resistance, Neoplasm - drug effects
/ Environmental Health
/ Humans
/ Molecular Toxicology
/ Nitrogen Oxides - chemistry
/ Occupational Medicine/Industrial Medicine
/ Pharmacology/Toxicology
/ Platinum - chemistry
/ Platinum - pharmacokinetics
/ Platinum Compounds - chemistry
/ Platinum Compounds - pharmacology
/ Urinary Bladder Neoplasms - drug therapy
/ Urinary Bladder Neoplasms - pathology
2017
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Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells
![Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells](https://syndetics.com/index.aspx?isbn=/mc.gif&issn=0340-5761&client=MBRL&type=mbrl)
Journal Article
Platinum(IV)-nitroxyl complexes as possible candidates to circumvent cisplatin resistance in RT112 bladder cancer cells
2017
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Overview
The therapeutic efficacy of the anticancer drug cisplatin is limited by the development of resistance. We therefore investigated newly synthesized platinum-nitroxyl complexes (PNCs) for their potential to circumvent cisplatin resistance. The complexes used were PNCs with bivalent
cis
-Pt
II
(R
·
NH
2
)(NH
3
)Cl
2
and
cis
-Pt
II
(DAPO)Ox and four-valent platinum
cis
,
trans
,
cis
-Pt
IV
(R
·
NH
2
)(NH
3
)(OR)
2
Cl
2
and
cis
,
trans
,
cis
-Pt
IV
(DAPO)(OR)
2
Ox, where R
·
are TEMPO or proxyl nitroxyl radicals, DAPO is
trans
-3,4-diamino-2,2,6,6-tetramethylpiperidine-1-oxyl, and OR and Ox are carboxylato and oxalato ligands, respectively. The complexes were characterized by spectroscopic methods, HPLC, log
P
ow
data and elemental analysis. We studied intracellular platinum accumulation, DNA platination and cytotoxicity upon treatment with the PNCs in a model system of the bladder cancer cell line RT112 and its cisplatin-resistant subline RT112-CP. Platinum accumulation and DNA platination were similar in RT112 and RT112-CP cells for both bivalent and four-valent PNCs, in contrast to cisplatin for which a reduction in intracellular accumulation and DNA platination was observed in the resistant subline. The PNCs were found to platinate DNA in relation to the length of their axial RO-ligands. Furthermore, the PNCs were increasingly toxic in relation to the elongation of their axial RO-ligands, with similar toxicities in RT112 and its cisplatin-resistant subline. Using a cell-free assay, we observed induction of oxidative DNA damage by cisplatin but not PNCs suggesting that cisplatin exerts its toxic action by platination and oxidative DNA damage, while cells treated with PNCs are protected against oxidatively induced lesions. Altogether, our study suggests that PNCs may provide a more effective treatment for tumors which have developed resistance toward cisplatin.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
Antineoplastic Agents - chemistry
/ Antineoplastic Agents - pharmacology
/ Biomedical and Life Sciences
/ Cell Survival - drug effects
/ Chemistry Techniques, Synthetic
/ DNA
/ Drug Resistance, Neoplasm - drug effects
/ Humans
/ Occupational Medicine/Industrial Medicine
/ Platinum Compounds - chemistry
/ Platinum Compounds - pharmacology
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