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Carrall JA, Lie W, Lambert JM, Harris HH, Lai B, Dillon CT. Optimizing Arsenic Therapy by Selectively Targeting Leukemia Cells. J Med Chem 2023; 66:12101-12114. [PMID: 37594965 DOI: 10.1021/acs.jmedchem.3c00676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Arsenic, in the simple form of arsenic trioxide, is currently marketed for the treatment of acute promyelocytic leukemia. Due to the multifaceted mechanisms of action of arsenic, it has also shown promise in other types of leukemias but is hindered by its toxic effects toward normal cells. This research has aimed to determine whether tumor-homing peptide complexes of arsenic can be designed and developed to strategically target specific cancers. The end goal is to achieve dose reduction and decreased side effects of the resultant arsenic therapeutic agent. In this article, we present the synthesis, characterization, and stability studies of a new class of As-peptide complexes designed to target leukemia. In vitro biological studies of the most stable complex show 1000 times greater toxicity toward leukemia cells over human blood cells, indicating potential for progression to in vivo studies.
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Affiliation(s)
- Judith A Carrall
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong 2522, New South Wales, Australia
| | - Wilford Lie
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong 2522, New South Wales, Australia
| | - Jacob M Lambert
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong 2522, New South Wales, Australia
- Molecular Horizons, University of Wollongong, Wollongong 2522, New South Wales, Australia
| | - Hugh H Harris
- School of Physical Sciences, The University of Adelaide, Adelaide 5005, South Australia, Australia
| | - Barry Lai
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont 60439, Illinois, United States
| | - Carolyn T Dillon
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong 2522, New South Wales, Australia
- Molecular Horizons, University of Wollongong, Wollongong 2522, New South Wales, Australia
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2
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Toubhans B, Alkafri N, Quintela M, James DW, Bissardon C, Gazze S, Knodel F, Proux O, Gourlan AT, Rathert P, Bohic S, Gonzalez D, Francis LW, Charlet L, Conlan RS. Selenium nanoparticles modulate histone methylation via lysine methyltransferase activity and S-adenosylhomocysteine depletion. Redox Biol 2023; 61:102641. [PMID: 36842241 PMCID: PMC9988660 DOI: 10.1016/j.redox.2023.102641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
At physiological levels, the trace element selenium plays a key role in redox reactions through the incorporation of selenocysteine in antioxidant enzymes. Selenium has also been evaluated as a potential anti-cancer agent, where selenium nanoparticles have proven effective, and are well tolerated in vivo at doses that are toxic as soluble Se. The use of such nanoparticles, coated with either serum albumin or the naturally occurring alkaline polysaccharide chitosan, also serves to enhance biocompatibility and bioavailability. Here we demonstrate a novel role for selenium in regulating histone methylation in ovarian cancer cell models treated with inorganic selenium nanoparticles coated with serum albumin or chitosan. As well as inducing thioredoxin reductase expression, ROS activity and cancer cell cytotoxicity, coated nanoparticles caused significant increases in histone methylation. Specifically, selenium nanoparticles triggered an increase in the methylation of histone 3 at lysines K9 and K27, histone marks involved in both the activation and repression of gene expression, thus suggesting a fundamental role for selenium in these epigenetic processes. This direct function was confirmed using chemical inhibitors of the histone lysine methyltransferases EZH2 (H3K27) and G9a/EHMT2 (H3K9), both of which blocked the effect of selenium on histone methylation. This novel role for selenium supports a distinct function in histone methylation that occurs due to a decrease in S-adenosylhomocysteine, an endogenous inhibitor of lysine methyltransferases, the metabolic product of methyl-group transfer from S-adenosylmethionine in the one-carbon metabolism pathway. These observations provide important new insights into the action of selenium nanoparticles. It is now important to consider both the classic antioxidant and novel histone methylation effects of this key redox element in its development in cancer therapy and other applications.
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Affiliation(s)
- Benoit Toubhans
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK; Université Grenoble Alpes, ISTerre, 38000, Grenoble, France
| | - Nour Alkafri
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Marcos Quintela
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - David W James
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Caroline Bissardon
- Université Grenoble Alpes, INSERM, UA7 STROBE, Synchrotron Radiation for Biomedicine, Grenoble, France
| | - Salvatore Gazze
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Franziska Knodel
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, University of Stuttgart, D-70550, Stuttgart, Germany
| | - Olivier Proux
- OSUG, UAR 832 CNRS, Université Grenoble Alpes, 38041, Grenoble, France
| | | | - Philipp Rathert
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, University of Stuttgart, D-70550, Stuttgart, Germany
| | - Sylvain Bohic
- Université Grenoble Alpes, INSERM, UA7 STROBE, Synchrotron Radiation for Biomedicine, Grenoble, France; ESRF, European Synchrotron Radiation Facility, CS, 40220, 38043, Grenoble, Cedex 9, France
| | - Deyarina Gonzalez
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | - Lewis W Francis
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK
| | | | - R Steven Conlan
- Swansea University Medical School, Swansea University, Swansea, SA2 8PP, UK.
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Virk RK, Garla R, Kaushal N, Bansal MP, Garg ML, Mohanty BP. The relevance of arsenic speciation analysis in health & medicine. CHEMOSPHERE 2023; 316:137735. [PMID: 36603678 DOI: 10.1016/j.chemosphere.2023.137735] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/24/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
Long term exposure to arsenic through consumption of contaminated groundwater has been a global issue since the last five decades; while from an alternate standpoint, arsenic compounds have emerged as unparallel chemotherapeutic drugs. This review highlights the contribution from arsenic speciation studies that have played a pivotal role in the progression of our understanding of the biological behaviour of arsenic in humans. We also discuss the limitations of the speciation studies and their association with the interpretation of arsenic metabolism. Chromatographic separation followed by spectroscopic detection as well as the utilization of biotinylated pull-down assays, protein microarray and radiolabelled arsenic have been instrumental in identifying hundreds of metabolic arsenic conjugates, while, computational modelling has predicted thousands of them. However, these species exhibit a variegated pattern, which supports more than one hypothesis for the metabolic pathway of arsenic. Thus, the arsenic species are yet to be integrated into a coherent mechanistic pathway depicting its chemicobiological fate. Novel biorelevant arsenic species have been identified due to significant evolution in experimental methodologies. However, these methods are specific for the identification of only a group of arsenicals sharing similar physiochemical properties; and may not be applicable to other constituents of the vast spectrum of arsenic species. Consequently, the identity of arsenic binding partners in vivo and the sequence of events in arsenic metabolism are still elusive. This resonates the need for additional focus on the extraction and characterization of both low and high molecular weight arsenicals in a combinative manner.
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Affiliation(s)
- Rajbinder K Virk
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
| | - Roobee Garla
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
| | - Naveen Kaushal
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
| | - Mohinder P Bansal
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
| | - Mohan L Garg
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
| | - Biraja P Mohanty
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.
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Okeke ES, Okagu IU, Okoye CO, Ezeorba TPC. The use of calcium carbide in food and fruit ripening: potential mechanisms of toxicity to humans and future prospects. Toxicology 2022; 468:153112. [DOI: 10.1016/j.tox.2022.153112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/10/2022] [Accepted: 01/27/2022] [Indexed: 01/30/2023]
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Binu P, Soman R, Zakhariah Hisham O, Narayanan SP, Nair RH. Acute promyelocytic leukemia drug - arsenic trioxide in the presence of eugenol shows differential action on leukemia cells (HL-60) and cardiomyocytes (H9c2) - inference from NMR study. Toxicol Mech Methods 2021; 31:457-466. [PMID: 33879037 DOI: 10.1080/15376516.2021.1913685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The increased concern of cardiovascular dysfunction by cancer therapeutics has led to more effective treatment strategies. Arsenic trioxide (As2O3) is a potential chemotherapeutic agent for acute promyelocytic leukemia (APL), but the effectiveness is affected by potential cardiotoxicity. Researchers have been trying to find out novel modalities to manage the adverse effects of As2O3. In our study, the antioxidant molecule eugenol showed protective action against the destructive impact of As2O3 on cardiomyocytes (H9c2) without compromising the anti-cancer property As2O3 on leukemia cells (HL-60). We have studied the interaction between arsenic and eugenol in physiological and acidic pH to understand the molecular mechanism of differential action of As2O3 in the presence of eugenol using NMR spectroscopy. The study observed that at physiological pH, arsenic and eugenol interact to form an inactive product, positively affecting H9c2 cardiomyocytes. Still, there is no such interaction in acidic pH evidenced by the useful anti-cancer property of As2O3. The result concludes that the antioxidant molecule eugenol is an efficient protective agent against the adverse effect of As2O3 on cardiomyocytes.
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Affiliation(s)
- Prakash Binu
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Reshma Soman
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Omar Zakhariah Hisham
- NMR Facility, Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
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Ponomarenko O, La Porte PF, Singh SP, Langan G, Fleming DEB, Spallholz JE, Alauddin M, Ahsan H, Ahmed S, Gailer J, George GN, Pickering IJ. Selenium-mediated arsenic excretion in mammals: a synchrotron-based study of whole-body distribution and tissue-specific chemistry. Metallomics 2017; 9:1585-1595. [PMID: 29058732 DOI: 10.1039/c7mt00201g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Arsenicosis, a syndrome caused by ingestion of arsenic contaminated drinking water, currently affects millions of people in South-East Asia and elsewhere. Previous animal studies revealed that the toxicity of arsenite essentially can be abolished if selenium is co-administered as selenite. Although subsequent studies have provided some insight into the biomolecular basis of this striking antagonism, many details of the biochemical pathways that ultimately result in the detoxification and excretion of arsenic using selenium supplements have yet to be thoroughly studied. To this end and in conjunction with the recent Phase III clinical trial "Selenium in the Treatment of Arsenic Toxicity and Cancers", we have applied synchrotron X-ray techniques to elucidate the mechanisms of this arsenic-selenium antagonism at the tissue and organ levels using an animal model. X-ray fluorescence imaging (XFI) of cryo-dried whole-body sections of laboratory hamsters that had been injected with arsenite, selenite, or both chemical species, provided insight into the distribution of both metalloids 30 minutes after treatment. Co-treated animals showed strong co-localization of arsenic and selenium in the liver, gall bladder and small intestine. X-ray absorption spectroscopy (XAS) of freshly frozen organs of co-treated animals revealed the presence in liver tissues of the seleno bis-(S-glutathionyl) arsinium ion, which was rapidly excreted via bile into the intestinal tract. These results firmly support the previously postulated hepatobiliary excretion of the seleno bis-(S-glutathionyl) arsinium ion by providing the first data pertaining to organs of whole animals.
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Affiliation(s)
- Olena Ponomarenko
- Molecular and Environmental Science Research Group, Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada.
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Swindell EP, Hankins PL, Chen H, Miodragović ÐU, O'Halloran TV. Anticancer activity of small-molecule and nanoparticulate arsenic(III) complexes. Inorg Chem 2013; 52:12292-304. [PMID: 24147771 PMCID: PMC3893798 DOI: 10.1021/ic401211u] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Starting in ancient China and Greece, arsenic-containing compounds have been used in the treatment of disease for over 3000 years. They were used for a variety of diseases in the 20th century, including parasitic and sexually transmitted illnesses. A resurgence of interest in the therapeutic application of arsenicals has been driven by the discovery that low doses of a 1% aqueous solution of arsenic trioxide (i.e., arsenous acid) lead to complete remission of certain types of leukemia. Since Food and Drug Administration (FDA) approval of arsenic trioxide (As2O3) for treatment of acute promyelocytic leukemia in 2000, it has become a front-line therapy in this indication. There are currently over 100 active clinical trials involving inorganic arsenic or organoarsenic compounds registered with the FDA for the treatment of cancers. New generations of inorganic and organometallic arsenic compounds with enhanced activity or targeted cytotoxicity are being developed to overcome some of the shortcomings of arsenic therapeutics, namely, short plasma half-lives and a narrow therapeutic window.
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Affiliation(s)
- Elden P. Swindell
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
| | - Patrick L. Hankins
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
| | - Haimei Chen
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
| | - Ðenana U. Miodragović
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
| | - Thomas V. O'Halloran
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3113
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8
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Metal Species in Biology: Bottom-Up and Top-Down LC Approaches in Applied Toxicological Research. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/801840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Since the inception of liquid chromatography (LC) more than 100 years ago this separation technique has been developed into a powerful analytical tool that is frequently applied in life science research. To this end, unique insights into the interaction of metal species (throughout this manuscript “metal species” refers to “toxic metals, metalloid compounds, and metal-based drugs” and “toxic metals” to “toxic metals and metalloid compounds”) with endogenous ligands can be obtained by using LC approaches that involve their hyphenation with inductively coupled plasma-based element specific detectors. This review aims to provide a synopsis of the different LC approaches which may be employed to advance our understanding of these interactions either in a “bottom-up” or a “top-down” manner. In the “bottom-up” LC-configuration, endogenous ligands are introduced into a physiologically relevant mobile phase buffer, and the metal species of interest is injected. Subsequent “interrogation” of the on-column formed complex(es) by employing a suitable separation mechanism (e.g., size exclusion chromatography or reversed-phase LC) while changing the ligand concentration(s), the column temperature or the pH can provide valuable insight into the formation of complexes under near physiological conditions. This approach allows to establish the relative stability and hydrophobicity of metal-ligand complexes as well as the dynamic coordination of a metal species (injected) to two ligands (dissolved in the mobile phase). Conversely, the “top-down” analysis of a biological fluid (e.g., blood plasma) by LC (e.g., using size exclusion chromatography) can be used to determine the size distribution of endogenous metalloproteins which are collectively referred to as the “metalloproteome”. This approach can provide unique insight into the metabolism and the plasma protein binding of metal species, and can simultaneously visualize the dose-dependent perturbation of the metalloproteome by a particular metal species. The concerted application of these LC approaches is destined to provide new insight into biochemical processes which represent an important starting point to advance human health in the 21st century.
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Currier J, Saunders RJ, Ding L, Bodnar W, Cable P, Matoušek T, Creed JT, Stýblo M. Comparative oxidation state specific analysis of arsenic species by high-performance liquid chromatography-inductively coupled plasma-mass spectrometry and hydride generation-cryotrapping-atomic absorption spectrometry. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 2013; 28:843-852. [PMID: 23687401 PMCID: PMC3655785 DOI: 10.1039/c3ja30380b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The formation of methylarsonous acid (MAsIII) and dimethylarsinous acid (DMAsIII) in the course of inorganic arsenic (iAs) metabolism plays an important role in the adverse effects of chronic exposure to iAs. High-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) and hydride generation-cryotrapping-atomic absorption spectrometry (HG-CT-AAS) have been frequently used for the analysis of MAsIII and DMAsIII in biological samples. While HG-CT-AAS has consistently detected MAsIII and DMAsIII, HPLC-ICP-MS analyses have provided inconsistent and contradictory results. This study compares the capacities of both methods to detect and quantify MAsIII and DMAsIII in an in vitro methylation system consisting of recombinant human arsenic (+3 oxidation state) methyltransferase (AS3MT), S-adenosylmethionine as a methyl donor, a non-thiol reductant tris(2-carboxyethyl)phosphine, and arsenite (iAsIII) or MAsIII as substrate. The results show that reversed-phase HPLC-ICP-MS can identify and quantify MAsIII and DMAsIII in aqueous mixtures of biologically relevant arsenical standards. However, HPLC separation of the in vitro methylation mixture resulted in significant losses of MAsIII, and particularly DMAsIII with total arsenic recoveries below 25%. Further analyses showed that MAsIII and DMAsIII bind to AS3MT or interact with other components of the methylation mixture, forming complexes that do not elute from the column. Oxidation of the mixture with H2O2 which converted trivalent arsenicals to their pentavalent analogs prior to HPLC separation increased total arsenic recoveries to ~95%. In contrast, HG-CT-AAS analysis found large quantities of methylated trivalent arsenicals in mixtures incubated with either iAsIII or MAsIII and provided high (>72%) arsenic recoveries. These data suggest that an HPLC-based analysis of biological samples can underestimate MAsIII and DMAsIII concentrations and that controlling for arsenic species recovery is essential to avoid artifacts.
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Affiliation(s)
- Jenna Currier
- Curriculum in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
| | - R. Jesse Saunders
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
| | - Lan Ding
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
| | - Wanda Bodnar
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
| | - Peter Cable
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
| | - Tomáš Matoušek
- Institute of Analytical Chemistry of the ASCR, v.v.i., Veveří 97, 602 00 Brno, Czech Republic
| | - John T. Creed
- Microbiological and Chemical Exposure Assessment Research Division, NERL, US EPA, Cincinnati, OH 45628, USA
| | - Miroslav Stýblo
- Curriculum in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7461, USA
- Corresponding Author: Tel: (+1) 919-966-5721; Fax: (+1) 919-843-0776;
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Leslie EM. Arsenic-glutathione conjugate transport by the human multidrug resistance proteins (MRPs/ABCCs). J Inorg Biochem 2011; 108:141-9. [PMID: 22197475 DOI: 10.1016/j.jinorgbio.2011.11.009] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 10/14/2011] [Accepted: 11/11/2011] [Indexed: 12/13/2022]
Abstract
Millions of people world-wide are chronically exposed to inorganic forms of the environmental toxicant arsenic in drinking water. This has led to a public health crisis because arsenic is a human carcinogen, and causes a myriad of other adverse health effects. In order to prevent and treat arsenic-induced toxicity it is critical to understand the cellular handling of this metalloid. A large body of literature describes the importance of the cellular tripeptide glutathione (γ-Glu-Cys-Gly,GSH/GS) in the excretion of arsenic. The triglutathione conjugate of arsenite [As(III)(GS)(3)] and the diglutathione conjugate of monomethylarsonous acid [MMA(III)(GS)(2)] have been isolated from rat bile and mouse urine, and account for the majority of excreted arsenic, suggesting these are important transportable forms. The ATP-binding cassette (ABC) transporter proteins, multidrug resistance protein 1 (MRP1/ABCC1) and the related protein MRP2 (ABCC2), are thought to play an important role in arsenic detoxification through the cellular efflux of arsenic-GSH conjugates. Current knowledge on the cellular handling of arsenic with a special emphasis on the transport pathways of the arsenic-GSH conjugates As(III)(GS)(3), MMA(III)(GS)(2), and dimethylarsenic glutathione DMA(III)(GS), as well as, the seleno-bis(S-glutathionyl) arsinium ion [(GS)(2)AsSe](-) are reviewed.
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Affiliation(s)
- Elaine M Leslie
- Department of Physiology, University of Alberta, Edmonton, AB, Canada,
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de Bettencourt AM, Duarte MF, Florêncio MH, Henriques FF, Madeira PA, Portela MI, Vilas-Boas LF. Possible key intermediates in arsenic biochemistry: Synthesis and identification by liquid chromatography electrospray ionization mass spectrometry and high resolution mass spectrometry. Microchem J 2011. [DOI: 10.1016/j.microc.2011.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Yehiayan L, Membreno N, Matulis S, Boise LH, Cai Y. Extraction tool and matrix effects on arsenic speciation analysis in cell lines. Anal Chim Acta 2011; 699:187-92. [PMID: 21704773 PMCID: PMC3184454 DOI: 10.1016/j.aca.2011.05.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2011] [Revised: 05/17/2011] [Accepted: 05/18/2011] [Indexed: 11/27/2022]
Abstract
Arsenic glutathione (As-GSH) complexes have been suggested as possible metabolites in arsenic (As) metabolism. Extensive research has been performed on the toxicological and apoptotic effects of As, while few reports exist on its metabolism at the cellular level due to the analytical challenges. In this study, an efficient extraction method for arsenicals from cell lines was developed. Evaluation of extraction tools; vortex, ultrasonic bath and ultrasonic probe and solvents; water, chemicals (methanol and trifluoroacetic acid), and enzymes (pepsin, trypsin and protease) was performed. GSH effect on the stability of As-GSH complexes was studied. Arsenic metabolites in dimethylarsino glutathione (DMA(GS)) incubated multiple myeloma cell lines were identified following extraction. Intracellular GSH concentrations of myeloma cell lines were imitated in the extraction media and its corresponding effect on the stability and distribution of As metabolites was studied. An enhancement in both extraction recoveries and time efficiency with the use of the ultrasonic probe was observed. Higher stabilities for the As species in water, pepsin and trypsin were obtained. The presence of 0.5mM GSH in the extraction media (PBS, pH 7.4) could not stabilize the As-GSH complexes compared to the 5mM GSH, where high stabilization of the complexes was observed over a 5 day storage study. Finally, the speciation analysis of the DMA(GS) culture incubated cell lines in the presence or absence of GSH revealed the important role GSH plays in the preservation of DMA(GS) identity. Hence, caution is required during the extraction of arsenicals especially the As-GSH complexes, since their identification is highly dependent on GSH concentration.
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Affiliation(s)
- Lucy Yehiayan
- Department of Chemistry & Biochemistry, Florida International University, 11200 SW 8 St, Miami, Florida, 33199
| | - Nellymar Membreno
- Department of Chemistry & Biochemistry, Florida International University, 11200 SW 8 St, Miami, Florida, 33199
| | - Shannon Matulis
- Dept. of Hematology & Medical Oncology at Winship Cancer Institute, Emory University, Atlanta, Georgia, 30322
| | - Lawrence H. Boise
- Dept. of Hematology & Medical Oncology at Winship Cancer Institute, Emory University, Atlanta, Georgia, 30322
| | - Yong Cai
- Department of Chemistry & Biochemistry, Florida International University, 11200 SW 8 St, Miami, Florida, 33199
- Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199
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