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Zhao Z, Simms A, Steinmetz NF. Cisplatin-Loaded Tobacco Mosaic Virus for Ovarian Cancer Treatment. Biomacromolecules 2022; 23:4379-4387. [PMID: 36053908 PMCID: PMC9831511 DOI: 10.1021/acs.biomac.2c00831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Ovarian cancer is the foremost cause of gynecological cancer and a major cause of cancer death in women. Treatment for advanced stage is surgical debulking followed by chemotherapy; however, most patients relapse with more aggressive and therapy-resistant tumors. There is a need to develop drug delivery approaches to deliver platinum therapies to tumors to increase efficacy while maintaining safety. Toward this goal, we utilized the protein nanotubes from the plant virus, tobacco mosaic virus (TMV), as a drug carrier. Specifically, the nanochannel of TMV was loaded with the active dication form of cisplatin (cisPt2+), making use of the negatively charged Glu acid side chains that line the interior channel of TMV. We achieved a loading efficiency with ∼2700 cisPt2+ per TMV; formulation stability was established with drug complexes stably loaded into the carrier for 2 months under refrigerated storage. TMV-cisPt maintained its efficacy against ovarian tumor cells with an IC50 of ∼40 μM. TMV-cisPt exhibited superior efficacy vs free cisPt in ovarian tumor mouse models using intraperitoneal ID8-Defb29/Vegf-a-Luc (mouse) tumors and subcutaneous A2780 (human) xenografts. TMV-cisPt treatment led to reduced tumor burden and increased survival. Using ID8-Defb29/Vegf-a-Luc-bearing C57BL/6 mice, we also noted reduced tumor growth when animals were treated with TMV alone, which may indicate antitumor immunity induced by the immunomodulatory nature of the plant virus nanoparticle. Biodistribution studies supported the efficacy data, showing increased cisPt accumulation within tumors when delivered via the TMV carrier vs free cisPt administration. Finally, good safety profiles were noted. The study highlights the potential of TMV as a drug carrier against cancer and points to the opportunity to explore plant viruses as chemo-immuno combination cancer therapeutics.
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Affiliation(s)
- Zhongchao Zhao
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States; Center for Nano-ImmunoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Andrea Simms
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Nicole F. Steinmetz
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States; Center for Nano-ImmunoEngineering, Department of Bioengineering, Department of Radiology, and Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, United States; Institute for Materials Discovery and Design, University of California, La Jolla, California 92093, United States
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Comparison of transport of chemotherapeutic drugs in voxelized heterogeneous model of human brain tumor. Microvasc Res 2019; 124:76-90. [PMID: 30923021 DOI: 10.1016/j.mvr.2019.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 02/26/2019] [Accepted: 03/11/2019] [Indexed: 01/20/2023]
Abstract
Systemic administration of chemotherapeutic drugs is widely used in the treatment of cancer. However, a good understanding of drug transport barriers that influence the treatment efficacy is still lacking. In this study, a voxelized numerical model based on dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) and computational fluid dynamics (CFD) is employed to study the transport and efficacy of three different chemotherapeutic drugs, namely methotrexate, doxorubicin and cisplatin in human brain tumors. DCE-MRI data provides realistic heterogeneous vasculature of the tumor, the permeability of tissue to contrast agent, interstitial volume fraction (porosity) of the tissue and patient-specific arterial input function (AIF). The permeability of tissue to aforementioned drugs is determined by correlating it with the permeability of tissue to the contrast agent. The model is employed to simulate drug concentration in the tissue and compare the effect of heterogeneous vasculature on the distribution of the drugs in the tumor. The drug accumulation is observed to be higher in high permeability areas initially, and in higher porosity areas at later times. Furthermore, it is observed that methotrexate remains in the interstitial space of the tumor in higher concentration for a longer duration as compared to other two drugs, facilitating more tumor cell killing.
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Rajkumar P, Mathew BS, Das S, Isaiah R, John S, Prabha R, Fleming DH. Cisplatin Concentrations in Long and Short Duration Infusion: Implications for the Optimal Time of Radiation Delivery. J Clin Diagn Res 2016; 10:XC01-XC04. [PMID: 27630935 DOI: 10.7860/jcdr/2016/18181.8126] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 03/18/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Cisplatin has radiosensitizing properties and the best sensitization to radiotherapy occurs with a higher plasma concentration of cisplatin. To our knowledge the optimal time sequence between chemotherapy and administration of radiation therapy, to obtain maximum effect from concurrent chemoradiation is unclear. AIM The aim of this study was to measure the two cisplatin infusion regimens in order to determine the total and free cisplatin post infusion concentration changes over time. These changes may have clinical implications on the optimum time of administration of post infusion radiation therapy. MATERIALS AND METHODS Two cohorts of patients were recruited and both, total and free plasma concentration of cisplatin following long and short durations of intravenous infusion was determined. Blood samples were collected at 0.5, 1, 1.5, 2, 3 and 5 hours from the start of the infusion in the 1hour infusion group and at 2, 3, 3.5, 4, 6 and 24 hours from the start of the infusion, in the 3 hour infusion group. Total and free cisplatin concentrations were measured using a validated HPLC-UV method. RESULTS The highest concentration of total and free cisplatin was achieved at the end of the infusion in both regimens. Total cisplatin concentration declined 30 minutes after the end of infusion in both the groups. After 1hour of discontinuing cisplatin, the free cisplatin concentration also declined significantly. CONCLUSION We conclude that radiation should be administered within 30 minutes of completion of the infusion irrespective of the duration of infusion.
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Affiliation(s)
- Pradeep Rajkumar
- Fellow, Clinical Pharmacology Unit, Department of Pharmacology and Clinical Pharmacology, Christian Medical College Hospital , Vellore, India
| | - Binu Susan Mathew
- Professor, Clinical Pharmacology Unit, Department of Pharmacology and Clinical Pharmacology, Christian Medical College Hospital , Vellore, India
| | - Saikat Das
- Associate Professor, Department of Radiation Oncology, Christian Medical College Hospital , Vellore, India
| | - Rajesh Isaiah
- Associate Professor, Department of Radiation Oncology, Christian Medical College Hospital , Vellore, India
| | - Subashini John
- Professor, Department of Radiation Oncology, Christian Medical College Hospital , Vellore, India
| | - Ratna Prabha
- Assistant Professor, Clinical Pharmacology Unit, Christian Medical College Hospital , Vellore, India
| | - Denise Helen Fleming
- Professor, Clinical Pharmacology Unit, Christian Medical College Hospital , Vellore, India
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Fish RG, Shelley MD, Badman J, Mason M, Adams M, Paterson I. Platinum Accumulation in Adult Cancer Patients Receiving Cisplatin. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/bf03257408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Grigoryan KR, Baghramyan NA. Influence of cis-[PtCl2(Me2SO)2] on thermal denaturation of albumin. Biophysics (Nagoya-shi) 2011. [DOI: 10.1134/s0006350911010106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Møller C, Tastesen HS, Gammelgaard B, Lambert IH, Stürup S. Stability, accumulation and cytotoxicity of an albumin-cisplatin adduct. Metallomics 2010; 2:811-8. [DOI: 10.1039/c0mt00046a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hall MD, Okabe M, Shen DW, Liang XJ, Gottesman MM. The role of cellular accumulation in determining sensitivity to platinum-based chemotherapy. Annu Rev Pharmacol Toxicol 2008; 48:495-535. [PMID: 17937596 DOI: 10.1146/annurev.pharmtox.48.080907.180426] [Citation(s) in RCA: 350] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The platinum (Pt) drugs cisplatin and carboplatin are heavily employed in chemotherapy regimens; however, similar to other classes of drugs, a number of intrinsic and acquired resistance mechanisms hamper their effectiveness. The method by which Pt drugs enter cells has traditionally been attributed to simple passive diffusion. However, recent evidence suggests a number of active uptake and efflux mechanisms are at play, and altered regulation of these transporters is responsible for the reduced accumulation of drug in resistant cells. This review suggests a model that helps reconcile the disparate literature by describing multiple pathways for Pt-containing drugs into and out of the cell.
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Affiliation(s)
- Matthew D Hall
- Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-4255, USA
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Xu L, Zuch CL, Lin YS, Modi NB, Lum BL. Pharmacokinetics and safety of bevacizumab administered in combination with cisplatin and paclitaxel in cynomolgus monkeys. Cancer Chemother Pharmacol 2007; 61:607-14. [PMID: 17549476 DOI: 10.1007/s00280-007-0513-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2006] [Accepted: 04/30/2007] [Indexed: 10/23/2022]
Abstract
PURPOSE Bevacizumab is the first anti-angiogenic monoclonal antibody approved for use in combination with chemotherapy for treatment of a variety of solid tumors. The objective of this study was to evaluate the safety of bevacizumab when administered concomitantly with paclitaxel and cisplatin to cynomolgus monkeys, and to assess the pharmacokinetic and safety interactions between bevacizumab and the two chemotherapeutic agents. METHODS Twenty male cynomolgus monkeys (Macaca fasicularis) were randomized to one of four treatment groups: vehicle, bevacizumab alone, cisplatin alone, and the combination of cisplatin and bevacizumab. Blood collection over serial time points allowed determination of the pharmacokinetic parameters of paclitaxel and bevacizumab and the maximum concentration (C (max)) for cisplatin. Drug concentrations were determined by graphite-furnace atomic absorption, high performance liquid chromatography, and enzyme-linked immunosorbent assay methods, for cisplatin, paclitaxel, and bevacizumab, respectively. RESULTS AUC0-t values for bevacizumab when administered alone or in combination with chemotherapy were 6,747 +/- 1,872 and 7,366 +/- 1,599 microg/ml x day, respectively. AUC0-t values for paclitaxel with or without concomitantly administered bevacizumab were 10.9 +/- 2.9 and 10.3 +/- 3.7 microg/ml x day, respectively. No alterations in the C (max) of bevacizumab, paclitaxel, or cisplatin were observed between any of the treatment groups. As expected, based on their known safety profile, the administration of cisplatin and paclitaxel were associated with vomiting, decreased body weight, and transient decreases in white blood cell and absolute neutrophil counts; concomitant bevacizumab administration did not alter the incidence or severity of these toxicological effects. CONCLUSION Pharmacokinetic estimates for bevacizumab, paclitaxel and cisplatin indicate that combination of bevacizumab with the two chemotherapeutic agents does not result in a pharmacokinetic interaction. Moreover, the addition of bevacizumab to the chemotherapy regimen did not appear to alter the safety profiles of cisplatin/paclitaxel in cynomolgus monkeys. Results from the present study supported the clinical development of bevacizumab treatment regimens in combination with the chemotherapeutic agents paclitaxel and cisplatin.
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Affiliation(s)
- Lu Xu
- Department of Pharmacokinetic, Pharmacodynamic and Bioanalytical Sciences, Genentech Inc., 1 DNA Way (MS-70), South San Francisco, CA, 94080, USA
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Desoize B, Madoulet C. Particular aspects of platinum compounds used at present in cancer treatment. Crit Rev Oncol Hematol 2002; 42:317-25. [PMID: 12050023 DOI: 10.1016/s1040-8428(01)00219-0] [Citation(s) in RCA: 265] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The history of platinum in cancer treatment began 150 years ago with the first synthesis of cisplatin; but it was not used in the clinic before 30 years ago. Then 3000 derivatives were synthesised and tested, with poor successes: three other derivatives only are available today. Clearly they are not more active, but they are less toxic than cisplatin, although two, carboplatin and nedaplatin, yield a cross-resistance, while one, oxaliplatin, does not. Their mechanisms of action are similar: these four pro-drugs form adducts with DNA, impairing DNA synthesis and repair then. Their pharmacokinetics are complicated since we always measure two overlapping pharmacokinetics: those of the parent compound and of the bound platinum. Cisplatin is now recommended for few cancers, it is replaced by less-toxic carboplatin, and therefore more easily used in combination. Oxaliplatin give interesting results in a number of cancers. The official recommendation in Japan for nedaplatin is head and neck, testicular, lung, oesophageal, ovarian, and cervical cancer.
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Affiliation(s)
- Bernard Desoize
- Laboratoire de Biochimie et de Biologie Moléculaire, EA 3306, Faculté de Pharmacie, IFR 53, 51 rue Cognacq-Jay, Reims, France.
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Ivanov AI, Christodoulou J, Parkinson JA, Barnham KJ, Tucker A, Woodrow J, Sadler PJ. Cisplatin binding sites on human albumin. J Biol Chem 1998; 273:14721-30. [PMID: 9614070 DOI: 10.1074/jbc.273.24.14721] [Citation(s) in RCA: 274] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Reactions of cisplatin (cis-[PtCl2(NH3)2]) with albumin are thought to play an important role in the metabolism of this anticancer drug. They are investigated here via (i) labeling of cisplatin with 15N and use of two-dimensional 1H,15N NMR spectroscopy, (ii) comparison of natural human serum albumin with recombinant human albumin (higher homogeneity and SH content), (iii) chemical modification of Cys, Met, and His residues, (iv) reactions of bound platinum with thiourea, and (v) gel filtration chromatography. In contrast to previous reports, it is shown that the major sulfur-containing binding site involves Met and not Cys-34, and also a N ligand, in the form of an S,N macrochelate. Additional monofunctional adducts involving other Met residues and Cys-34 are also observed. During the later stages of reactions of cisplatin with albumin, release of NH3 occurs due to the strong trans influence of Met sulfur, which weakens the Pt-NH3 bonds, and protein cross-linking is observed. The consequences of these findings for the biological activity of cisplatin-albumin complexes are discussed.
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Affiliation(s)
- A I Ivanov
- Department of Chemistry, University of Edinburgh, Edinburgh EH9 3JJ, United Kingdom
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Tredici G, Tredici S, Fabbrica D, Minoia C, Cavaletti G. Experimental cisplatin neuronopathy in rats and the effect of retinoic acid administration. J Neurooncol 1998; 36:31-40. [PMID: 9525823 DOI: 10.1023/a:1005756023082] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Peripheral nervous system alterations were induced in adult rats by administration of cisplatin (CDDP) 2 mg/kg twice weekly for 4.5 weeks. Dorsal root ganglion neurons showed pathological changes. Morphometric determinations demonstrated a reduction in size of the somatic, nuclear and nucleolar area. The nucleoli were the most involved subcellular structures. Nerve conduction velocity and the tail-flick test for pain were both significantly altered in CDDP treated rats, whereas the rota-rod test for coordination revealed no changes in either treated or control rats. Analytical determinations demonstrated platinum accumulation in the DRG of CDDP treated rats. Spontaneous recovery, demonstrated by morphometric, electrophysiological, functional and analytical determinations, occurred after treatment discontinuation within about 7 weeks. A pilot study of the possible neuroprotective action of retinoic acid (RA) was also performed with this model of cisplatin neuronopathy. The rationale for using RA was based on its assumed antioxidant and neurotrophic effect. However, RA failed to prevent morphometric, electrophysiological, functional and analytical alterations induced by CDDP on DRG neurons. RA induced only a mild generalized protective effect.
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Affiliation(s)
- G Tredici
- Istituto di Anatomia Umana, Università degli Studi di Milano, Italia
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12
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Platinum Accumulation in Adult Cancer Patients Receiving Consecutive Infusions of Cisplatin. Clin Drug Investig 1994. [DOI: 10.1007/bf03259433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Lagrange JL, Cassuto-Viguier E, Barbé V, Fischel JL, Mondain JR, Etienne MC, Ferréro JM, Creisson-Ducray A, Formento P, Milano G. Cytotoxic effects of long-term circulating ultrafiltrable platinum species and limited efficacy of haemodialysis in clearing them. Eur J Cancer 1994; 30A:2057-60. [PMID: 7857703 DOI: 10.1016/0959-8049(94)00332-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We applied haemodialysis to clear platinum (Pt) circulating species following renal insufficiency due to an accidental cisplatin overdosage (205 mg/m2 instead of 100 mg/m2). Serum samples were repeatedly obtained during this clinical episode from day 5 up to day 30 after cisplatin dosing. A serum aliquot taken at day 22 after cisplatin administration was tested to assess the possible cytotoxicity exhibited by the circulating Pt species on a head and neck tumour cell line. The profile of ultrafiltrable (UF) Pt during successive haemodialysis cycles was striking. After each haemodialysis cycle, a marked decrease in UF Pt, occurred but was followed by more or less pronounced rebounds. Cisplatin concentration-cytotoxic effect curves obtained in vitro from patient serum before cisplatin administration and healthy control serum exhibited very similar concentration effect profiles. In contrast, the patient serum taken at day 22 after cisplatin administration resulted in marked cytotoxic effects, which were much greater than those which could have been anticipated considering the Pt concentration of this serum sample. The present report underlines the limited usefulness of haemodialysis for rescuing cisplatin treated patients, exhibiting unanticipated postinfusion renal failure with overexposure to the drug. The in vitro investigations suggest that pharmacological effects of Pt derivatives may not only be attributable to short-term effects of the drug diffusion into tissues, but also to more delayed effects from Pt circulating species.
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Abstract
BACKGROUND Unlike the related drug carboplatin, cisplatin is highly nephrotoxic and must be given with vigorous intravenous hydration at a much lower dose. As the result of an accidental substitution of cisplatin for carboplatin, a 68-year-old woman received a massive overdose of cisplatin without intravenous hydration. METHODS Laboratory documentation included measurements of platinum concentrations by atomic absorption spectroscopy and of xeroderma pigmentosum group E (XPE) binding factor, a protein that is involved in the recognition step of DNA repair. RESULTS Toxicities included severe emesis, myelosuppression, renal failure, and deafness, which are well known. Other toxicities were seizures, hallucinations, loss of vision, and hepatic toxicity, which were unusual and may have been caused by the magnitude of the overdose. As late as day 19, there was a continued cellular response from cisplatin, as evidenced by decreased levels of XPE binding factor in extracts from the patient's peripheral blood lymphocytes. Plasmapheresis was effective in lowering the platinum concentration from greater than 2900 ng/ml to 200 ng/ml and appeared to be of clinical benefit. Even after the onset of renal failure, hydration to increase urine volume resulted in increased urinary excretion of platinum. Granulocyte-macrophage colony-stimulating factor (GM-CSF) was used to ameliorate myelosuppression. The patient received a transplanted kidney from her monozygotic twin sister and survived with no clinically significant deficit except for deafness. CONCLUSION No previous reports exist of survival after such a high dose of cisplatin without intravenous hydration. In the future, patients may benefit from similar management and heightened awareness of the possibility of accidental substitution.
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Affiliation(s)
- G Chu
- Department of Medicine, Stanford University School of Medicine, California
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Melvik JE, Dornish JM, Pettersen EO. The binding of cis-dichlorodiammineplatinum(II) to extracellular and intracellular compounds in relation to drug uptake and cytotoxicity in vitro. Br J Cancer 1992; 66:260-5. [PMID: 1503898 PMCID: PMC1977828 DOI: 10.1038/bjc.1992.254] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The biological consequence of the binding of cis-dichlorodiammineplatinum(II) (cis-DDP) to serum protein as well as to cellular components in general, was studied on human NHIK 3025 cells in vitro. As expected, we found that the cytotoxicity of cis-DDP was lost by binding to serum protein, and that protein-bound platinum was impermeable to the cells. As we have previously shown that electropermeabilisation may transiently increase the influx of cis-DDP, we applied this technique in an attempt to increase the efflux of cis-DDP or any other cytotoxic intermediates. Our data demonstrate that if cells are electropermeabilised shortly after treatment with cis-DDP, cell survival increased. This indicates that cis-DDP in an active form is released from the cells; furthermore, the plasma membrane represents a barrier against efflux, as it has also been shown to be against influx of active cis-DDP. Thus, our data are consistent with the idea that there must be an intracellular pool of either cis-DDP, or some biologically active intermediates, in cells treated with this drug. Additionally, our data indicate that the binding rate of cis-DDP to biological molecules is much quicker intracellularly than in the extracellular environment: We found the biological half-life at 37 degrees C to be about 2.1 h in human serum and about 11 min inside our cells.
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Affiliation(s)
- J E Melvik
- Department of Tissue Culture, Norwegian Radium Hospital, Montebello, Oslo
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Holding JD, Lindup WE, van Laer C, Vreeburg GC, Schilling V, Wilson JA, Stell PM. Phase I trial of a cisplatin-albumin complex for the treatment of cancer of the head and neck. Br J Clin Pharmacol 1992; 33:75-81. [PMID: 1540494 PMCID: PMC1381202 DOI: 10.1111/j.1365-2125.1992.tb04003.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
1. A phase I trial of a cisplatin-albumin complex for the treatment of end-stage squamous cell carcinoma of the head and neck is reported. The complex was prepared by overnight incubation of cisplatin with human albumin at 37 degrees C. This resulted in more than 98% of the drug being bound to protein at the start of treatment. The patients were either unable to continue with or had refused conventional therapy with cisplatin. 2. The trial began at a dose of 100 mg cisplatin m-2 and was increased in 25 mg m-2 increments to 650 mg m-2. Despite the absence of the customary protective measures of pre-hydration and anti-emetic treatment no serious toxicity was encountered. 3. Unbound plasma platinum concentrations were lower than after conventional cisplatin treatment but total plasma platinum and tumour platinum concentrations were much higher. Urinary excretion of platinum was low and the incidence of nephrotoxicity was greatly diminished. Two responses were seen (one complete and one partial) in 38 patients treated and the median survival time was 109 days, compared with 151 days for patients treated conventionally with cisplatin and 56 days for untreated patients. 4. The complex is not as effective as conventional cisplatin therapy but is much less toxic, offers improved quality of life during treatment and may prove to be of benefit in patients who could not otherwise be treated.
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Affiliation(s)
- J D Holding
- Department of Pharmacology and Therapeutics, University of Liverpool
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Jacobs C, Kaubisch S, Halsey J, Lum BL, Gosland M, Coleman CN, Sikic BI. The use of probenecid as a chemoprotector against cisplatin nephrotoxicity. Cancer 1991; 67:1518-24. [PMID: 1848154 DOI: 10.1002/1097-0142(19910315)67:6<1518::aid-cncr2820670610>3.0.co;2-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Probenecid inhibits cisplatin (CP) secretion in humans and protects against CP-induced nephrotoxicity in rats. The authors conducted a Phase I trial of escalating doses of CP using probenecid as a chemoprotector. Fifty-four courses of CP at doses ranging from 100 to 160 mg/m2 were given by 24-hour infusion to 36 patients. There was no renal impairment at any dose. Ototoxicity, however, became the dose-limiting toxicity; 14 patients experienced a 20 or greater decibel (dB) loss. Seven percent of courses were associated with a leukocyte count of less than 1.5 x 10/microliters, and 19% with a platelet count of less than 50 x 10(3)/microliters. Only three patients developed neurotoxicity. Correlating pharmacokinetic data and toxicity, the authors found that high cumulative dose, area under the curve (AUC) for unbound platinum, and cumulative AUC were associated with ototoxicity and peripheral neuropathy. It was concluded that probenecid may protect against CP nephrotoxicity and warrants further investigation. Its unique mechanism of action and lack of toxicity make it ideal to combine with other chemoprotectors.
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Affiliation(s)
- C Jacobs
- Department of Medicine, Stanford University School of Medicine, California 94305-5306
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Carfagna PF, Wyrick SD, Holbrook DJ, Chaney SG. Effects of diethyldithiocarbamate (DDTC) on the plasma biotransformations of tetrachloro(d,l-trans)-1,2-diaminocyclohexaneplatinum(IV) (tetraplatin) in Fischer 344 rats. JOURNAL OF BIOCHEMICAL TOXICOLOGY 1991; 6:71-80. [PMID: 1652641 DOI: 10.1002/jbt.2570060110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have studied the effects of diethyldithiocarbamate (DDTC) on the biotransformations of toxic doses of tetrachloro (d,l-trans)1,2-diaminocyclohexaneplatinum(IV) (tetraplatin) in Fischer 344 rats. In animals not treated with DDTC, tetraplatin was rapidly converted to dichloro(d,l-trans)1,2-diaminocyclohexaneplatinum(II) [PtCl2(dach)]. Subsequent biotransformations included the transient formation of the (d,l-trans)1,2-diaminocyclohexane-aquachloroplatinum(II) [Pt(H2O)(Cl)(dach)]+ complex, followed by formation of the platinum (Pt)-methionine and either Pt-cysteine or Pt-ornithine complexes. Significant amounts of free (d,l-trans) 1,2-diaminocyclohexane (dach) were observed in plasma as a result of intracellular trans-labilization reactions. DDTC caused a marked decrease in both total and protein-bound platinum in the circulation. A significant increase in the plasma concentration of free dach was also observed as a result of formation of the Pt(DDTC)2 complex. Some of the free dach could have arisen from intracellular reactions with DDTC, but the displacement of platinum from plasma proteins was more than sufficient to account for the increase in free dach in the circulation. DDTC treatment also decreased plasma concentrations of tetraplatin, PtCl2(dach), [Pt(H2O)(Cl) (dach)]+, the Pt-methionine complex, and one unidentified biotransformation product, but had no effect on the Pt-cysteine (or Pt-ornithine) complex. These effects of DDTC on protein-bound platinum and low-molecular-weight biotransformation products in plasma may contribute to the decrease in tetraplatin toxicity seen in DDTC-treated rats.
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Affiliation(s)
- P F Carfagna
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel Hill 27599
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Interactions of Platinum Amine Compounds with Sulfur-Containing Biomolecules and Dna Fragments. ADVANCES IN INORGANIC CHEMISTRY 1991. [DOI: 10.1016/s0898-8838(08)60007-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Mulder PO, de Vries EG, Uges DR, Scaf AH, Sleijfer DT, Mulder NH. Pharmacokinetics of carboplatin at a dose of 750 mg m-2 divided over three consecutive days. Br J Cancer 1990; 61:460-4. [PMID: 2183874 PMCID: PMC1971298 DOI: 10.1038/bjc.1990.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Pharmacokinetics of the cisplatin analogue carboplatin were studied in patients with disseminated ovarian and testicular cancer. Carboplatin 750 mg m-2 divided over three consecutive days was given as part of an ablative combination regimen followed by autologous bone marrow transplantation. Platinum (Pt) in plasma, plasma ultrafiltrate and urine was determined up to 96 h after the last drug dose by atomic absorption spectrometry. Carboplatin was measured by high performance liquid chromatography. The curves of ultrafiltrated Pt and carboplatin decayed in a bio-exponential way with t1/2 alpha of respectively 65 and 70 min and t1/2 beta of respectively 378 and 1014 min. The volumes of distribution (Vdss) were 18 and 25 l m-2, respectively, and total body clearances (ClTB) 79 and 65 ml min-1 m-2. Both curves overlapped when corrected for the Pt content of carboplatin. A diversion with the three-exponential curve of total Pt occurred between 3 and 6 h. After 10 h approximately 30% of the plasma Pt was protein bound. Total Pt had a larger Vdss (117 l m-2) and a lower total body clearance (14 ml min-1 m-2) than free Pt and carboplatin. Fifty-three per cent of the i.v. administered carboplatin was excreted in the urine in the first 6 h. Plasma ultrafiltrated Pt and carboplatin decreased to undetectable levels within 48 h, but total Pt was detectable until 96 h after the last carboplatin dose. However, this Pt is already bound to protein and unlikely to be cytotoxic to reinfused haemopoietic stem cells, so bone marrow reinfusion can be safely performed at 48 h after repeated dosing of carboplatin on three consecutive days.
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Affiliation(s)
- P O Mulder
- Department of Internal Medicine, University Hospital, Groningen, The Netherlands
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De Waal WA, Maessen FJ, Kraak JC. Analytical methodologies for the quantitation of platinum anti-cancer drugs and related compounds in biological media. J Pharm Biomed Anal 1990; 8:1-30. [PMID: 2102260 DOI: 10.1016/0731-7085(90)80003-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The methods for analysis of platinum-based anti-cancer drugs in biological media are reviewed in this paper. Although emphasis is placed on cisplatin, attention is also given to several of its analogues (carboplatin, iproplatin) and their degradation and biotransformation products. In an introductory section a short description is given of the historical background and the clinical applications of cisplatin. Reactions occurring in the body and in aqueous solutions are discussed because of their implications for the design of analytical procedures. After a detailed description of sample preparation and storage, attention is focussed on the analytical techniques used for the determination of either total platinum levels or individual platinum-containing compounds. The techniques discussed include atomic absorption and emission spectrometry, derivatization reactions and several chromatographic techniques with different detection methods. The specific advantages and disadvantages of these techniques are discussed.
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Affiliation(s)
- W A De Waal
- Laboratory for Analytical Chemistry, University of Amsterdam, The Netherlands
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Gandara DR, Wiebe VJ, Perez EA, Makuch RW, DeGregorio MW. Cisplatin rescue therapy: experience with sodium thiosulfate, WR2721, and diethyldithiocarbamate. Crit Rev Oncol Hematol 1990; 10:353-65. [PMID: 2177606 DOI: 10.1016/1040-8428(90)90010-p] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cisplatin has a steep dose response curve for both antitumor and adverse effects. Therapeutic strategies aimed at reducing toxicity and allowing dose escalation of intravenous cisplatin, such as administration in hypertonic saline and pharmacokinetically based dosing schedules, have been partially successful in reducing nephrotoxicity and bone marrow suppression. However, new dose-limiting toxicities consisting of peripheral neuropathy and ototoxicity have emerged, which continue to restrict potential use of high dose cisplatin therapy. Intraperitoneal administration of high dose cisplatin also offers the potential of markedly increased local drug exposure if systemic toxicity can be avoided. Proposed chemoprotective agents, including sodium thiosulfate, WR2721, and diethyldithiocarbamate (DDTC) are being extensively examined as "rescue agents" for either regional or systemic administration of cisplatin. Although each agent offers unique advantages to be considered in developing successful rescue therapy, many questions remain regarding molecular and pharmacokinetic interactions with cisplatin, appropriate dosing schedules, and effects on antineoplastic activity. We present a review of current investigations of chemoprotectors for prevention of cisplatin-related toxicities.
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Huang MY, Schacht J. Drug-induced ototoxicity. Pathogenesis and prevention. MEDICAL TOXICOLOGY AND ADVERSE DRUG EXPERIENCE 1989; 4:452-67. [PMID: 2689838 DOI: 10.1007/bf03259926] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ototoxicity is a disabling adverse effect of several widely used classes of drugs, such as diuretics, anti-inflammatory agents, antineoplastic agents and aminoglycoside antibiotics. High-dose therapy with either diuretics or anti-inflammatory agents is primarily associated with acute and transient impairment of hearing or tinnitus. In contrast, long term treatment with antineoplastic agents or aminoglycoside antibiotics is typically associated with delayed and irreversible loss of hearing; lesion in the organ of Corti include the destruction of auditory sensory cells. Vestibular function can also be compromised by ototoxic drugs. Occasional cases of ototoxicity have been reported for a variety of other therapeutic compounds and environmental toxins. In addition, the simultaneous administration of multiple agents which are potentially ototoxic can lead to synergistic loss of hearing. Exposure to loud noise may also potentiate the hearing loss due to cochleotoxic drugs. Ototoxic agents can impair the sensory processing of sound at many cellular or subcellular sites. However, the molecular mechanisms of ototoxicity have not been established for most of these drugs, and structure-toxicity relationships have not been determined. It has therefore been difficult to predict the ototoxic potential of new drugs, and rational approaches to the prevention of ototoxicity are still lacking. The clinical and experimental features of ototoxicity are reviewed for several classes of drugs, with an emphasis on current knowledge of the mechanism and the possibilities for the prevention of ototoxicity for each.
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Affiliation(s)
- M Y Huang
- Kresge Hearing Research Institute, University of Michigan, Ann Arbor
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