Abstract
Co-Administration of CuII chelates are reported to decrease life threatening Cisplatin [PtII(NH3)2(CL)2]-induced acute degenerative renal, gastrointestinal, thymic, and bone marrow states consistent with serious necrotizing and immunemediated inflammatory disease. Initially it was found that copper sulfate treatment completely prevented lethality as well as gastric and nephrotoxicity without compromising PtII(NH3)2(CL)2 antineoplastic activity, which led to suggestions that prior CuIItreatment be used clinically to prevent serious side effects of PtII(NH3)2(CL)2-treatment. In the course of these studies it was discovered that CuII-treatments alone inhibited neoplastic growth and increased survival of rat and mouse models of cancer. Subsequently it was discovered that a stable non-toxic and non-polar lipophilic chelate, CopperII 2(3,5-diisopropylsalicylate)4, caused redifferentiation of cultured neuroblastoma and mouse muscle-implanted mammary adenocarcinoma without neoplastic cell killing. Another stable non-toxic and non-polar lipophilic chelate, CopperII 2(3,5-ditertiarybutylsalicylate)4, was found to prevent Bax-initiated and caspases-3-activation mediated apoptosis. These remarkable observations are concluded to be due to enzyme-mimetic or modulating reactivities of CuII chelates and/or facilitation of CuII or I-dependent enzyme syntheses required to overcome inflammatory-neoplastic disease states. Further, approaches to treating neoplastic diseases by removal of Cu from tissues with ammonium tetrathiomolybdate in an anticopper approach to therapy are not well founded based upon existing scientific literature.
Keywords: Cisplatin, anticancer, copper chelates, redifferentiation, anti-inflammatory, ammonium tetrathiomolybdate, coppertetrathiomolybdate, androstenedione synthesis
Current Medicinal Chemistry
Title:Co-Treatment With Copper Compounds Dramatically Decreases Toxicities Observed With Cisplatin Cancer Therapy And The Anticancer Efficacy Of Some Copper Chelates Supports The Conclusion That Copper Chelate Therapy May Be Markedly More Effective And Less Toxic Than Cisplatin Therapy
Volume: 14 Issue: 14
Author(s): John R. J. Sorenson and Grant W. Wangila
Affiliation:
Keywords: Cisplatin, anticancer, copper chelates, redifferentiation, anti-inflammatory, ammonium tetrathiomolybdate, coppertetrathiomolybdate, androstenedione synthesis
Abstract: Co-Administration of CuII chelates are reported to decrease life threatening Cisplatin [PtII(NH3)2(CL)2]-induced acute degenerative renal, gastrointestinal, thymic, and bone marrow states consistent with serious necrotizing and immunemediated inflammatory disease. Initially it was found that copper sulfate treatment completely prevented lethality as well as gastric and nephrotoxicity without compromising PtII(NH3)2(CL)2 antineoplastic activity, which led to suggestions that prior CuIItreatment be used clinically to prevent serious side effects of PtII(NH3)2(CL)2-treatment. In the course of these studies it was discovered that CuII-treatments alone inhibited neoplastic growth and increased survival of rat and mouse models of cancer. Subsequently it was discovered that a stable non-toxic and non-polar lipophilic chelate, CopperII 2(3,5-diisopropylsalicylate)4, caused redifferentiation of cultured neuroblastoma and mouse muscle-implanted mammary adenocarcinoma without neoplastic cell killing. Another stable non-toxic and non-polar lipophilic chelate, CopperII 2(3,5-ditertiarybutylsalicylate)4, was found to prevent Bax-initiated and caspases-3-activation mediated apoptosis. These remarkable observations are concluded to be due to enzyme-mimetic or modulating reactivities of CuII chelates and/or facilitation of CuII or I-dependent enzyme syntheses required to overcome inflammatory-neoplastic disease states. Further, approaches to treating neoplastic diseases by removal of Cu from tissues with ammonium tetrathiomolybdate in an anticopper approach to therapy are not well founded based upon existing scientific literature.
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J. Sorenson R. John and Wangila W. Grant, Co-Treatment With Copper Compounds Dramatically Decreases Toxicities Observed With Cisplatin Cancer Therapy And The Anticancer Efficacy Of Some Copper Chelates Supports The Conclusion That Copper Chelate Therapy May Be Markedly More Effective And Less Toxic Than Cisplatin Therapy, Current Medicinal Chemistry 2007; 14 (14) . https://dx.doi.org/10.2174/092986707780831041
DOI https://dx.doi.org/10.2174/092986707780831041 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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