Inactivation of anthracyclines by serum heme proteins.
Inactivation of anthracyclines by serum heme proteins.
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血清血红素蛋白使蒽环类药物失活。
DOI:
10.1021/tx700002f
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发表时间:
2007
影响因子:
4.1
通讯作者:
Reszka,KrzysztofJ
中科院分区:
文献类型:
--
作者:
Wagner,BrettA;Teesch,LynnM;Buettner,GarryR;Britigan,BradleyE;Burns,CPatrick;Reszka,KrzysztofJ
We have previously shown that the anticancer agent doxorubicin undergoes oxidation and inactivation when exposed to myeloperoxidase-containing human leukemia HL-60 cells, or to isolated myeloperoxidase, in the presence of hydrogen peroxide and nitrite. In the current study we report that commercial fetal bovine serum (FBS) alone oxidizes doxorubicin in the presence of hydrogen peroxide and that nitrite accelerates this oxidation. The efficacy of inactivation was dependent on the concentration of serum present; no reaction was observed when hydrogen peroxide or serum was omitted. Peroxidase activity assays, based on oxidation of 3,3‘,5,5‘-tetramethylbenzidine, confirmed the presence of a peroxidase in the sera from several suppliers. The peroxidative activity was contained in the >10000 MW fraction. We also found that hemoglobin, a heme protein likely to be present in commercial FBS, is capable of oxidizing doxorubicin in the presence of hydrogen peroxide and that nitrite further stimulates the reaction. In contrast to intact doxorubicin, the serum + hydrogen peroxide + nitrite treated drug appeared to be nontoxic for PC3 human prostate cancer cells. Together, this study shows that (pseudo)peroxidases present in sera catalyze oxidation of doxorubicin by hydrogen peroxide and that this diminishes the tumoricidal activity of the anthracycline, at least in in vitro settings. Finally, this study also points out that addition of H2O2to media containing FBS will stimulate peroxidase-type of reactions, which may affect cytotoxic properties of studied compounds.
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影响因子:
2.9
作者:
Reszka,KJ;McCormick,ML;Britigan,BE
通讯作者:
Britigan,BE
DOI:
10.1016/j.niox.2004.03.006
发表时间:
2004-05
期刊:
Nitric oxide : biology and chemistry
影响因子:
--
作者:
Crystal B. Evig;E. Kelley;C. Weydert;Y. Chu;G. Buettner;C. Burns
通讯作者:
Crystal B. Evig;E. Kelley;C. Weydert;Y. Chu;G. Buettner;C. Burns
DOI:
--
发表时间:
1971
期刊:
Clinical pharmacology and therapy
影响因子:
--
作者:
D. Alberts;N. Bachur;J. Holtzman
通讯作者:
J. Holtzman
影响因子:
5.2
作者:
Hoy, A;Trégouët, D;Visvikis, S
通讯作者:
Visvikis, S
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
G. Buettner;Chin F. Ng;Min Wang;Freya Q. Schafer
通讯作者:
Freya Q. Schafer