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Daronnat L, Holfeltz V, Boubals N, Dumas T, Guilbaud P, Martinez DM, Moisy P, Sauge-Merle S, Lemaire D, Solari PL, Berthon L, Berthomieu C. Investigation of the Plutonium(IV) Interactions with Two Variants of the EF-Hand Ca-Binding Site I of Calmodulin. Inorg Chem 2023; 62:8334-8346. [PMID: 37184364 DOI: 10.1021/acs.inorgchem.3c00845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Due to its presence in the nuclear industry and its strong radiotoxicity, plutonium is an actinide of major interest in the event of internal contamination. To improve the understanding of its mechanisms of transport and accumulation in the body, the complexation of Pu(IV) to the most common protein calcium-binding motif found in cells, the EF-hand motif of calmodulin, was investigated. Visible and X-ray absorption spectroscopies (XAS) in solution made it possible to investigate the speciation of plutonium at physiological pH (pH 7.4) and pH 6 in two variants of the calmodulin Ca-binding site I and using Pu(IV) in different media: carbonate, chloride, or nitrate solutions. Three different species of Pu were identified in the samples, with formation of 1:1 Pu(IV):calmodulin peptide complexes, Pu(IV) reduction, and formation of peptide-mediated Pu(IV) hexanuclear cluster.
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Affiliation(s)
- Loïc Daronnat
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Vanessa Holfeltz
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Nathalie Boubals
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Philippe Guilbaud
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | | | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Sandrine Sauge-Merle
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - David Lemaire
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, Saint Aubin 91190, France
| | - Laurence Berthon
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Catherine Berthomieu
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
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Grémy O, Mougin-Degraef M, Devilliers K, Berdal M, Laroche P, Miccoli L. DTPA-Coated Liposomes as a New Delivery Vehicle for Plutonium Decorporation. Radiat Res 2021; 195:77-92. [PMID: 33180911 DOI: 10.1667/rade-20-00142.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 10/05/2020] [Indexed: 11/03/2022]
Abstract
Administration of diethylenetriaminepentaacetic acid (DTPA) is the treatment approach used to promote the decorporation of internalized plutonium. Here we evaluated the efficacy of PEGylated liposomes coated with DTPA, primarily designed to prevent enhanced plutonium accumulation in bones, compared to marketed nonliposomal DTPA and liposomes encapsulating DTPA. The comparative effects were examined in terms of reduction of activity in tissues of plutonium-injected rats. The prompt treatment with DTPA-coated liposomes elicited an even greater efficacy than that with liposome-encapsulated DTPA in limiting skeletal plutonium. This advantage, undoubtedly due to the anchorage of DTPA to the outer layer of liposomes, is discussed, as well as the reason for the loss of this superiority at delayed times after contamination. Plutonium complexed with DTPA-coated liposomes in extracellular compartments was partly diverted into the liver and the spleen. These complexes and those directly formed inside hepatic and splenic cells appeared to be degraded, then released from cells at extremely slow rates. This transitory accumulation of activity, which could not be counteracted by combining both liposomal forms, entailed an underestimation of the efficacy of DTPA-coated liposomes on soft tissue plutonium until total elimination probably more than one month after treatment. DTPA-coated liposomes may provide the best delivery vehicle of DTPA for preventing plutonium deposition in tissues, especially in bone where nuclides become nearly impossible to remove once fixed. Additional development efforts are needed to limit the diversion or to accelerate cell release of plutonium bound to DTPA-coated liposomes, using a labile bond for DTPA attachment.
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Affiliation(s)
- Olivier Grémy
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères-le-Châtel, France
| | - Marie Mougin-Degraef
- CRCINA, INSERM, CNRS, Université d'Angers, Université de Nantes, Nantes, France.,Nuclear Medicine, University Hospital, Nantes, France
| | - Karine Devilliers
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères-le-Châtel, France
| | - Marion Berdal
- Nuclear Medicine, University Hospital, Nantes, France
| | - Pierre Laroche
- Direction of Health, Security, Environment and Radioprotection, ORANO, Paris, France
| | - Laurent Miccoli
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères-le-Châtel, France
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Vidaud C, Miccoli L, Brulfert F, Aupiais J. Fetuin exhibits a strong affinity for plutonium and may facilitate its accumulation in the skeleton. Sci Rep 2019; 9:17584. [PMID: 31772265 PMCID: PMC6879641 DOI: 10.1038/s41598-019-53770-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 10/29/2019] [Indexed: 11/09/2022] Open
Abstract
After entering the blood, plutonium accumulates mainly in the liver and the bones. The mechanisms leading to its accumulation in bone are, however, completely unknown. We already know that another uptake pathway not involving the transferrin-mediated pathways is suspected to intervene in the case of the liver. Fetuin, a protein playing an important role in bone metabolism, is proposed as a potential transporter of Pu from serum to bone. For the first time, the binding constants of these two proteins (transferrin and fetuin) with tetravalent plutonium at physiological pH (pH 7.0) were determined by using capillary electrophoresis (CE) coupled with inductively coupled plasma mass spectrometry (ICP-MS). Their very close values (log10 KPuTf = 26.44 ± 0.28 and log10 KPuFet = 26.20 ± 0.24, respectively) suggest that transferrin and fetuin could compete to chelate plutonium, either in the blood or directly at bone surfaces in the case of Pu deposits. We performed competition reaction studies demonstrating that the relative distribution of Pu-protein complexes is fully explained by thermodynamics. Furthermore, considering the average concentrations of transferrin and fetuin in the blood, our calculation is consistent with the bio-distribution of Pu observed in humans.
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Affiliation(s)
- Claude Vidaud
- CEA, DRF, BIAM-Marcoule, F-30207, Bagnols sur Cèze, France.
| | - Laurent Miccoli
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, F-91297, Arpajon, France
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Léost L, Roques J, Van Der Meeren A, Vincent L, Sbirrazzuoli N, Hennig C, Rossberg A, Aupiais J, Pagnotta S, Den Auwer C, Di Giorgio C. Towards the development of chitosan nanoparticles for plutonium pulmonary decorporation. Dalton Trans 2018; 47:11605-11618. [PMID: 30090882 DOI: 10.1039/c8dt02419g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the 1940s, great amounts of Plutonium (Pu) have been produced for both military and civil purposes. Until now, the standard therapy for decorporation following inhalation has been the intravenous injection of diethylenetriaminepentaacetic acid ligand (Ca-DTPA form). This method offers a strong complexing constant for Pu(iv) but has poor chemical specificity, therefore its efficacy is limited to actinides present in the blood. Consequently, there is no decorporation treatment currently available which efficiently removes the intracellular Pu(iv) trapped in the pulmonary macrophages. Our research shows that a nanoparticle approach could be of particular interest due to large contact area and ability to target the retention compartments of the lungs. In this study, we have focused on the inhalation process involving forms of Pu(iv) with poor solubility. We explored the design of biocompatible nanoparticles able to target the macrophages in the lung alveoli and to chelate the forms of Pu(iv) with poor solubility. Nanoparticle formation was achieved through an ionic cross-linking concept using a polycationic polymer and an anionic chelate linker. We chose N-trimethyl chitosan, for its biocompatibility, as the polycationic polymer base of the nanoparticle and the phosphonic analogue of DTPA, diethylenetriamine-pentamethylenephosphonic acid (DTPMP) as the anionic chelating linker in forming NPs TMC-DTPMP. The synthesis and physico-chemical characterization of these NPs are presented. Secondly, the complexation mechanisms of TMC-DTPMP NPs with Thorium (Th(iv)) are discussed in terms of efficiency and structure. The Extended X-Ray Absorption Fine Structure (EXAFS) of the TMC-DTPMP complex with Th(iv) as well as Pu(iv) are defined and completed with DFT calculations to further delineate the plutonium coordination sphere after complexation. Finally, preliminary cytotoxicity tests onto macrophages were assayed.
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Affiliation(s)
- Laurane Léost
- Université Côte d'Azur, Institut de Chimie de Nice, UMR7272, 06108 Nice, France.
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Grémy O, Miccoli L, Lelan F, Bohand S, Cherel M, Mougin-Degraef M. Delivery of DTPA through Liposomes as a Good Strategy for Enhancing Plutonium Decorporation Regardless of Treatment Regimen. Radiat Res 2018. [DOI: 10.1667/rr14968.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Olivier Grémy
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères le Châtel, France
| | - Laurent Miccoli
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères le Châtel, France
| | - Faustine Lelan
- Laboratoire de RadioToxicologie, CEA, Université de Paris-Saclay, Bruyères le Châtel, France
| | | | - Michel Cherel
- CRCINA, Inserm, CNRS, Université d'Angers, Université de Nantes, Nantes, France
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Sachs S, Heller A, Weiss S, Bok F, Bernhard G. Interaction of Eu(III) with mammalian cells: Cytotoxicity, uptake, and speciation as a function of Eu(III) concentration and nutrient composition. Toxicol In Vitro 2015; 29:1555-68. [DOI: 10.1016/j.tiv.2015.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/29/2015] [Accepted: 06/05/2015] [Indexed: 11/30/2022]
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Chen S, Deng J, Yuan Y, Flachenecker C, Mak R, Hornberger B, Jin Q, Shu D, Lai B, Maser J, Roehrig C, Paunesku T, Gleber SC, Vine DJ, Finney L, VonOsinski J, Bolbat M, Spink I, Chen Z, Steele J, Trapp D, Irwin J, Feser M, Snyder E, Brister K, Jacobsen C, Woloschak G, Vogt S. The Bionanoprobe: hard X-ray fluorescence nanoprobe with cryogenic capabilities. JOURNAL OF SYNCHROTRON RADIATION 2014; 21:66-75. [PMID: 24365918 PMCID: PMC3874019 DOI: 10.1107/s1600577513029676] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 10/28/2013] [Indexed: 05/20/2023]
Abstract
Hard X-ray fluorescence microscopy is one of the most sensitive techniques for performing trace elemental analysis of biological samples such as whole cells and tissues. Conventional sample preparation methods usually involve dehydration, which removes cellular water and may consequently cause structural collapse, or invasive processes such as embedding. Radiation-induced artifacts may also become an issue, particularly as the spatial resolution increases beyond the sub-micrometer scale. To allow imaging under hydrated conditions, close to the `natural state', as well as to reduce structural radiation damage, the Bionanoprobe (BNP) has been developed, a hard X-ray fluorescence nanoprobe with cryogenic sample environment and cryo transfer capabilities, dedicated to studying trace elements in frozen-hydrated biological systems. The BNP is installed at an undulator beamline at sector 21 of the Advanced Photon Source. It provides a spatial resolution of 30 nm for two-dimensional fluorescence imaging. In this first demonstration the instrument design and motion control principles are described, the instrument performance is quantified, and the first results obtained with the BNP on frozen-hydrated whole cells are reported.
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Affiliation(s)
- S. Chen
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - J. Deng
- Applied Physics, Northwestern University, Evanston, IL 60208, USA
| | - Y. Yuan
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60611, USA
| | | | - R. Mak
- Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
| | | | - Q. Jin
- Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
| | - D. Shu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - B. Lai
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - J. Maser
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - C. Roehrig
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - T. Paunesku
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60611, USA
| | - S. C. Gleber
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - D. J. Vine
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - L. Finney
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - J. VonOsinski
- Northwestern Synchrotron Research Center, Argonne, IL 60439, USA
| | - M. Bolbat
- Northwestern Synchrotron Research Center, Argonne, IL 60439, USA
| | - I. Spink
- Xradia Inc., Pleasanton, CA 94588, USA
| | - Z. Chen
- Xradia Inc., Pleasanton, CA 94588, USA
| | - J. Steele
- Xradia Inc., Pleasanton, CA 94588, USA
| | - D. Trapp
- Xradia Inc., Pleasanton, CA 94588, USA
| | - J. Irwin
- Xradia Inc., Pleasanton, CA 94588, USA
| | - M. Feser
- Xradia Inc., Pleasanton, CA 94588, USA
| | - E. Snyder
- Xradia Inc., Pleasanton, CA 94588, USA
| | - K. Brister
- Northwestern Synchrotron Research Center, Argonne, IL 60439, USA
| | - C. Jacobsen
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
- Applied Physics, Northwestern University, Evanston, IL 60208, USA
- Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA
| | - G. Woloschak
- Department of Radiation Oncology, Northwestern University, Chicago, IL 60611, USA
| | - S. Vogt
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
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Paunesku T, Wanzer MB, Kirillova EN, Muksinova KN, Revina VS, Lyubchansky ER, Grosche B, Birschwilks M, Vogt S, Finney L, Woloschak GE. X-ray fluorescence microscopy for investigation of archival tissues. HEALTH PHYSICS 2012; 103:181-186. [PMID: 22951477 PMCID: PMC3716449 DOI: 10.1097/hp.0b013e31824e7023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Several recent efforts in the radiation biology community worldwide have amassed records and archival tissues from animals exposed to different radionuclides and external beam irradiation. In most cases, these samples come from lifelong studies on large animal populations conducted in national laboratories and equivalent institutions throughout Europe, North America, and Japan. While many of these tissues were used for histopathological analyses, much more information may still be obtained from these samples. A new technique suitable for imaging of these tissues is x-ray fluorescence microscopy (XFM). Following development of third generation synchrotrons, XFM has emerged as an ideal technique for the study of metal content, speciation, and localization in cells, tissues, and organs. Here the authors review some of the recent XFM literature pertinent to tissue sample studies and present examples of XFM data obtained from tissue sections of beagle dog samples, which show that the quality of archival tissues allows XFM investigation.
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Affiliation(s)
- T Paunesku
- Feinberg School of Medicine, Northwestern University, 303 E Chicago Avenue, Ward 13-007, Chicago, IL 60611, USA
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Vidaud C, Bourgeois D, Meyer D. Bone as Target Organ for Metals: The Case of f-Elements. Chem Res Toxicol 2012; 25:1161-75. [DOI: 10.1021/tx300064m] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Claude Vidaud
- CEA, IBEB, LEPC, BP 17171, F-30207
Bagnols-sur-Cèze, France
| | - Damien Bourgeois
- ICSM, UMR 5257/CEA/CNRS/UM2/ENSCM,
BP17171, F-30207 Bagnols-sur-Cèze, France
| | - Daniel Meyer
- ICSM, UMR 5257/CEA/CNRS/UM2/ENSCM,
BP17171, F-30207 Bagnols-sur-Cèze, France
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Jensen MP, Aryal BP, Gorman-Lewis D, Paunesku T, Lai B, Vogt S, Woloschak GE. Submicron hard X-ray fluorescence imaging of synthetic elements. Anal Chim Acta 2012; 722:21-8. [PMID: 22444530 DOI: 10.1016/j.aca.2012.01.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 01/20/2012] [Accepted: 01/26/2012] [Indexed: 10/28/2022]
Abstract
Synchrotron-based X-ray fluorescence microscopy (XFM) using hard X-rays focused into sub-micron spots is a powerful technique for elemental quantification and mapping, as well as microspectroscopic measurements such as μ-XANES (X-ray absorption near edge structure). We have used XFM to image and simultaneously quantify the transuranic element plutonium at the L(3) or L(2)-edge as well as Th and lighter biologically essential elements in individual rat pheochromocytoma (PC12) cells after exposure to the long-lived plutonium isotope (242)Pu. Elemental maps demonstrate that plutonium localizes principally in the cytoplasm of the cells and avoids the cell nucleus, which is marked by the highest concentrations of phosphorus and zinc, under the conditions of our experiments. The minimum detection limit under typical acquisition conditions with an incident X-ray energy of 18 keV for an average 202 μm(2) cell is 1.4 fg Pu or 2.9×10(-20) moles Pu μm(-2), which is similar to the detection limit of K-edge XFM of transition metals at 10 keV. Copper electron microscopy grids were used to avoid interference from gold X-ray emissions, but traces of strontium present in naturally occurring calcium can still interfere with plutonium detection using its L(α) X-ray emission.
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Affiliation(s)
- Mark P Jensen
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA.
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Aryal BP, Paunesku T, Woloschak GE, He C, Jensen MP. A proteomic approach to identification of plutonium-binding proteins in mammalian cells. J Proteomics 2011; 75:1505-14. [PMID: 22146473 DOI: 10.1016/j.jprot.2011.11.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 10/29/2011] [Accepted: 11/19/2011] [Indexed: 11/18/2022]
Abstract
Plutonium can enter the body through different routes and remains there for decades; however its specific biochemical interactions are poorly defined. We, for the first time, have studied plutonium-binding proteins using a metalloproteomic approach with rat PC12 cells. A combination of immobilized metal ion chromatography, 2D gel electrophoresis, and mass spectrometry was employed to analyze potential plutonium-binding proteins. Our results show that several proteins from PC12 cells show affinity towards Pu(4+)-NTA (plutonium bound to nitrilotriacetic acid). Proteins from seven different spots in the 2D gel were identified. In contrast to the previously known plutonium-binding proteins transferrin and ferritin, which bind ferric ions, most identified proteins in our experiment are known to bind calcium, magnesium, or divalent transition metal ions. The identified plutonium interacting proteins also have functional roles in downregulation of apoptosis and other pro-proliferative processes. MetaCore™ analysis based on this group of proteins produced a pathway with a statistically significant association with development of neoplastic diseases.
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Affiliation(s)
- Baikuntha P Aryal
- Chemical Science and Engineering Division, Argonne National Lab, Argonne, IL, USA
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