1
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Hackett MJ. A commentary on studies of brain iron accumulation during ageing. J Biol Inorg Chem 2024; 29:385-394. [PMID: 38735007 PMCID: PMC11186910 DOI: 10.1007/s00775-024-02060-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Brain iron content is widely reported to increase during "ageing", across multiple species from nematodes, rodents (mice and rats) and humans. Given the redox-active properties of iron, there has been a large research focus on iron-mediated oxidative stress as a contributor to tissue damage during natural ageing, and also as a risk factor for neurodegenerative disease. Surprisingly, however, the majority of published studies have not investigated brain iron homeostasis during the biological time period of senescence, and thus knowledge of how brain homeostasis changes during this critical stage of life largely remains unknown. This commentary examines the literature published on the topic of brain iron homeostasis during ageing, providing a critique on limitations of currently used experimental designs. The commentary also aims to highlight that although much research attention has been given to iron accumulation or iron overload as a pathological feature of ageing, there is evidence to support functional iron deficiency may exist, and this should not be overlooked in studies of ageing or neurodegenerative disease.
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Affiliation(s)
- Mark J Hackett
- School of Molecular and Life Sciences, Curtin University, Perth, WA, 6845, Australia.
- Curtin Health Innovation Research Institute, Curtin University, Perth, WA, 6102, Australia.
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2
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Wang Y, Wu W, Gong J. Live or death in cells: from micronutrition metabolism to cell fate. Front Cell Dev Biol 2023; 11:1185989. [PMID: 37250891 PMCID: PMC10213646 DOI: 10.3389/fcell.2023.1185989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Micronutrients and cell death have a strong relationship and both are essential for human to maintain good body health. Dysregulation of any micronutrients causes metabolic or chronic diseases, including obesity, cardiometabolic condition, neurodegeneration, and cancer. The nematode Caenorhabditis elegans is an ideal genetic organism for researching the mechanisms of micronutrients in metabolism, healthspan, and lifespan. For example, C. elegans is a haem auxotroph, and the research of this special haem trafficking pathway contributes important reference to mammal study. Also, C. elegans characteristics including anatomy simply, clear cell lineage, well-defined genetics, and easily differentiated cell forms make it a powerful tool for studying the mechanisms of cell death including apoptosis, necrosis, autophagy, and ferroptosis. Here, we describe the understanding of micronutrient metabolism currently and also sort out the fundamental mechanisms of different kinds of cell death. A thorough understanding of these physiological processes not only builds a foundation for developing better treatments for various micronutrient disorders but also provides key insights into human health and aging.
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Affiliation(s)
- Yuting Wang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jianke Gong
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China
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3
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Boseley RE, Howard DL, Hackett MJ, Lewis SW. The transfer and persistence of metals in latent fingermarks. Analyst 2022; 147:387-397. [DOI: 10.1039/d1an01951a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Transfer and persistence of metals in latent fingermarks derived from objects of forensic interest explored using synchrotron sourced X-ray fluorescence microscopy.
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Affiliation(s)
- Rhiannon E. Boseley
- School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Australia
| | - Daryl L. Howard
- ANSTO, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, Australia
| | - Mark J. Hackett
- School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Australia
| | - Simon W. Lewis
- School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Australia
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4
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Chevrier DM, Cerdá-Doñate E, Park Y, Cacho-Nerin F, Gomez‐Gonzalez M, Uebe R, Faivre D. Synchrotron‐Based Nano‐X‐Ray Absorption Near‐Edge Structure Revealing Intracellular Heterogeneity of Iron Species in Magnetotactic Bacteria. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Daniel M. Chevrier
- CNRS CEA BIAM Aix-Marseille Université 13108 Saint-Paul-lez-Durance France
- Department of Biomaterials Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany
| | - Elisa Cerdá-Doñate
- Department of Biomaterials Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany
| | - Yeseul Park
- CNRS CEA BIAM Aix-Marseille Université 13108 Saint-Paul-lez-Durance France
| | | | | | - René Uebe
- Department of Microbiology University of Bayreuth 95440 Bayreuth Germany
| | - Damien Faivre
- CNRS CEA BIAM Aix-Marseille Université 13108 Saint-Paul-lez-Durance France
- Department of Biomaterials Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany
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5
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Doble PA, de Vega RG, Bishop DP, Hare DJ, Clases D. Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry Imaging in Biology. Chem Rev 2021; 121:11769-11822. [PMID: 34019411 DOI: 10.1021/acs.chemrev.0c01219] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Elemental imaging gives insight into the fundamental chemical makeup of living organisms. Every cell on Earth is comprised of a complex and dynamic mixture of the chemical elements that define structure and function. Many disease states feature a disturbance in elemental homeostasis, and understanding how, and most importantly where, has driven the development of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) as the principal elemental imaging technique for biologists. This review provides an outline of ICP-MS technology, laser ablation cell designs, imaging workflows, and methods of quantification. Detailed examples of imaging applications including analyses of cancers, elemental uptake and accumulation, plant bioimaging, nanomaterials in the environment, and exposure science and neuroscience are presented and discussed. Recent incorporation of immunohistochemical workflows for imaging biomolecules, complementary and multimodal imaging techniques, and image processing methods is also reviewed.
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Affiliation(s)
- Philip A Doble
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Raquel Gonzalez de Vega
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - David P Bishop
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Dominic J Hare
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia.,School of BioSciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - David Clases
- Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales 2007, Australia
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6
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Hollings AL, Lam V, Takechi R, Mamo JCL, Reinhardt J, de Jonge MD, Kappen P, Hackett MJ. Revealing differences in the chemical form of zinc in brain tissue using K-edge X-ray absorption near-edge structure spectroscopy. Metallomics 2020; 12:2134-2144. [PMID: 33300524 DOI: 10.1039/d0mt00198h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Zinc is a prominent trace metal required for normal memory function. Memory loss and cognitive decline during natural ageing and neurodegenerative disease have been associated with altered brain-Zn homeostasis. Yet, the exact chemical pathways through which Zn influences memory function during health, natural ageing, or neurodegenerative disease remain unknown. The gap in the literature may in part be due to the difficulty to simultaneously image, and therefore, study the different chemical forms of Zn within the brain (or biological samples in general). To this extent, we have begun developing and optimising protocols that incorporate X-ray absorption near-edge structure (XANES) spectroscopic analysis of tissue at the Zn K-edge as an analytical tool to study Zn speciation in the brain. XANES is ideally suited for this task as all chemical forms of Zn are detected, the technique requires minimal sample preparation that may otherwise redistribute or alter the chemical form of Zn, and the Zn K-edge has known sensitivity to coordination geometry and ligand type. Herein, we report our initial results where we fit K-edge spectra collected from micro-dissected flash-frozen brain tissue, to a spectral library prepared from standard solutions, to demonstrate differences in the chemical form of Zn that exist between two brain regions, the hippocampus and cerebellum. Lastly, we have used an X-ray microprobe to demonstrate differences in Zn speciation within sub-regions of thin air-dried sections of the murine hippocampus; but, the corresponding results highlight that the chemical form of Zn is easily perturbed by sample preparation such as tissue sectioning or air-drying, which must be a critical consideration for future work.
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Affiliation(s)
- Ashley L Hollings
- Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia.
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7
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Jenkins NL, James SA, Salim A, Sumardy F, Speed TP, Conrad M, Richardson DR, Bush AI, McColl G. Changes in ferrous iron and glutathione promote ferroptosis and frailty in aging Caenorhabditis elegans. eLife 2020; 9:e56580. [PMID: 32690135 PMCID: PMC7373428 DOI: 10.7554/elife.56580] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 07/06/2020] [Indexed: 12/16/2022] Open
Abstract
All eukaryotes require iron. Replication, detoxification, and a cancer-protective form of regulated cell death termed ferroptosis, all depend on iron metabolism. Ferrous iron accumulates over adult lifetime in Caenorhabditis elegans. Here, we show that glutathione depletion is coupled to ferrous iron elevation in these animals, and that both occur in late life to prime cells for ferroptosis. We demonstrate that blocking ferroptosis, either by inhibition of lipid peroxidation or by limiting iron retention, mitigates age-related cell death and markedly increases lifespan and healthspan. Temporal scaling of lifespan is not evident when ferroptosis is inhibited, consistent with this cell death process acting at specific life phases to induce organismal frailty, rather than contributing to a constant aging rate. Because excess age-related iron elevation in somatic tissue, particularly in brain, is thought to contribute to degenerative disease, post-developmental interventions to limit ferroptosis may promote healthy aging.
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Affiliation(s)
- Nicole L Jenkins
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health and University of MelbourneParkvilleAustralia
| | | | - Agus Salim
- Department of Mathematics and Statistics, La Trobe UniversityBundooraAustralia
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical ResearchParkvilleAustralia
- Melbourne School of Population and Global Health, and School of Mathematics and Statistics, University of MelbourneMelbourneAustralia
| | - Fransisca Sumardy
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health and University of MelbourneParkvilleAustralia
| | - Terence P Speed
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical ResearchParkvilleAustralia
- Department of Mathematics and Statistics, University of MelbourneMelbourneAustralia
| | - Marcus Conrad
- Helmholtz Zentrum München, Institute of Metabolism and Cell DeathNeuherbergGermany
| | - Des R Richardson
- Department of Pathology and Bosch Institute, University of SydneySydneyAustralia
| | - Ashley I Bush
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health and University of MelbourneParkvilleAustralia
| | - Gawain McColl
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health and University of MelbourneParkvilleAustralia
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8
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Jones MWM, Kopittke PM, Casey L, Reinhardt J, Blamey FPC, van der Ent A. Assessing radiation dose limits for X-ray fluorescence microscopy analysis of plant specimens. ANNALS OF BOTANY 2020; 125:599-610. [PMID: 31777920 PMCID: PMC7102987 DOI: 10.1093/aob/mcz195] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 11/27/2019] [Indexed: 05/05/2023]
Abstract
BACKGROUND AND AIMS X-ray fluorescence microscopy (XFM) is a powerful technique to elucidate the distribution of elements within plants. However, accumulated radiation exposure during analysis can lead to structural damage and experimental artefacts including elemental redistribution. To date, acceptable dose limits have not been systematically established for hydrated plant specimens. METHODS Here we systematically explore acceptable dose rate limits for investigating fresh sunflower (Helianthus annuus) leaf and root samples and investigate the time-dose damage in leaves attached to live plants. KEY RESULTS We find that dose limits in fresh roots and leaves are comparatively low (4.1 kGy), based on localized disintegration of structures and element-specific redistribution. In contrast, frozen-hydrated samples did not incur any apparent damage even at doses as high as 587 kGy. Furthermore, we find that for living plants subjected to XFM measurement in vivo and grown for a further 9 d before being reimaged with XFM, the leaves display elemental redistribution at doses as low as 0.9 kGy and they continue to develop bleaching and necrosis in the days after exposure. CONCLUSIONS The suggested radiation dose limits for studies using XFM to examine plants are important for the increasing number of plant scientists undertaking multidimensional measurements such as tomography and repeated imaging using XFM.
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Affiliation(s)
- Michael W M Jones
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Australia
- For correspondence. E-mail
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, Australia
| | - Lachlan Casey
- Centre for Microscopy and Microanalysis, The University of Queensland, Australia
| | | | - F Pax C Blamey
- School of Agriculture and Food Sciences, The University of Queensland, Australia
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9
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Park JY, Singh JP, Lim J, Lee S. Development of XANES nanoscopy on BL7C at PLS-II. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:545-550. [PMID: 32153296 DOI: 10.1107/s160057752000082x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
X-ray absorption near-edge structure (XANES) imaging is a powerful tool to visualize the chemical state distribution of transition-metal-based materials at synchrotron radiation facilities. In recent years, the electrochemical working rechargeable battery has been the most studied material in XANES imaging owing to the large increase of portable electronics and electric vehicles. This work acknowledges the importance of battery analysis and has developed the XANES imaging system on BL7C at Pohang Light Source-II (PLS-II). BL7C employs an undulator taper configuration to obtain an energy band >130 eV near the K-absorption edge of the target element with a minimum energy interval >0.2 eV. While measuring energy-dependent images, the zone plate translation maintains the best focus, and then various data processes such as background correction, image registration and clustering allow single XANES spectrum extraction and chemical distribution mapping. Here, the XANES imaging process is described, the XANES spectrum quality is identified and the chemical states of the partially charged cathode material used in lithium-ion batteries as an application example are examined.
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Affiliation(s)
- Jae Yeon Park
- Pohang Accelerator Laboratory, POSTECH, Jigokro 127, Pohang, Kyungbuk 37637, South Korea
| | - Jitendra Pal Singh
- Pohang Accelerator Laboratory, POSTECH, Jigokro 127, Pohang, Kyungbuk 37637, South Korea
| | - Jun Lim
- Pohang Accelerator Laboratory, POSTECH, Jigokro 127, Pohang, Kyungbuk 37637, South Korea
| | - Sangsul Lee
- Pohang Accelerator Laboratory, POSTECH, Jigokro 127, Pohang, Kyungbuk 37637, South Korea
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10
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Activity-based ratiometric FRET probe reveals oncogene-driven changes in labile copper pools induced by altered glutathione metabolism. Proc Natl Acad Sci U S A 2019; 116:18285-18294. [PMID: 31451653 DOI: 10.1073/pnas.1904610116] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Copper is essential for life, and beyond its well-established ability to serve as a tightly bound, redox-active active site cofactor for enzyme function, emerging data suggest that cellular copper also exists in labile pools, defined as loosely bound to low-molecular-weight ligands, which can regulate diverse transition metal signaling processes spanning neural communication and olfaction, lipolysis, rest-activity cycles, and kinase pathways critical for oncogenic signaling. To help decipher this growing biology, we report a first-generation ratiometric fluorescence resonance energy transfer (FRET) copper probe, FCP-1, for activity-based sensing of labile Cu(I) pools in live cells. FCP-1 links fluorescein and rhodamine dyes through a Tris[(2-pyridyl)methyl]amine bridge. Bioinspired Cu(I)-induced oxidative cleavage decreases FRET between fluorescein donor and rhodamine acceptor. FCP-1 responds to Cu(I) with high metal selectivity and oxidation-state specificity and facilitates ratiometric measurements that minimize potential interferences arising from variations in sample thickness, dye concentration, and light intensity. FCP-1 enables imaging of dynamic changes in labile Cu(I) pools in live cells in response to copper supplementation/depletion, differential expression of the copper importer CTR1, and redox stress induced by manipulating intracellular glutathione levels and reduced/oxidized glutathione (GSH/GSSG) ratios. FCP-1 imaging reveals a labile Cu(I) deficiency induced by oncogene-driven cellular transformation that promotes fluctuations in glutathione metabolism, where lower GSH/GSSG ratios decrease labile Cu(I) availability without affecting total copper levels. By connecting copper dysregulation and glutathione stress in cancer, this work provides a valuable starting point to study broader cross-talk between metal and redox pathways in health and disease with activity-based probes.
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11
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Wang P, McKenna BA, Menzies NW, Li C, Glover CJ, Zhao FJ, Kopittke PM. Minimizing experimental artefacts in synchrotron-based X-ray analyses of Fe speciation in tissues of rice plants. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:1272-1279. [PMID: 31274454 DOI: 10.1107/s1600577519004351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/30/2019] [Indexed: 06/09/2023]
Abstract
Iron (Fe) plays an important role within environmental systems. Synchrotron-based X-ray approaches, including X-ray absorption spectroscopy (XAS), provide powerful tools for in situ analyses of Fe speciation, but beam damage during analysis may alter Fe speciation during its measurement. XAS was used to examine whether experimental conditions affect the analysis of Fe speciation in plant tissues. Even when analyzed in a cryostat at 12 K, it was found that FeIII can rapidly (within 0.5-1 min) photoreduce to FeII, although the magnitude of photoreduction varied depending upon the hydration of the sample, the coordination chemistry of the Fe, as well as other properties. For example, photoreduction of FeIII was considerably higher for aqueous standard compounds than for hydrated plant-root tissues. The use of freeze-dried samples in the cryostat (12 K) markedly reduced the magnitude of this FeIII photoreduction, and there was no evidence that the freeze-drying process itself resulted in experimental artefacts under the current experimental conditions, such as through the oxidation of FeII, although some comparatively small differences were observed when comparing spectra of hydrated and freeze-dried FeII compounds. The results of this study have demonstrated that FeIII photoreduction can occur during X-ray analysis, and provides suitable conditions to preserve Fe speciation to minimize the extent of beam damage when analyzing environmental samples. All studies utilizing XAS are encouraged to include a preliminary experiment to determine if beam damage is occurring, and, where appropriate, to take the necessary steps (such as freeze drying) to overcome these issues.
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Affiliation(s)
- Peng Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Brigid A McKenna
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Neal W Menzies
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Cui Li
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Chris J Glover
- Australian Synchrotron ANSTO, Clayton, Victoria 3168, Australia
| | - Fang Jie Zhao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia
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12
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Pushie MJ, Kelly ME, Hackett MJ. Direct label-free imaging of brain tissue using synchrotron light: a review of new spectroscopic tools for the modern neuroscientist. Analyst 2019; 143:3761-3774. [PMID: 29961790 DOI: 10.1039/c7an01904a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The incidence of brain disease and brain disorders is increasing on a global scale. Unfortunately, development of new therapeutic strategies has not increased at the same rate, and brain diseases and brain disorders now inflict substantial health and economic impacts. A greater understanding of the fundamental neurochemistry that underlies healthy brain function, and the chemical pathways that manifest in brain damage or malfunction, are required to enable and accelerate therapeutic development. A previous limitation to the study of brain function and malfunction has been the limited number of techniques that provide both a wealth of biochemical information, and spatially resolved information (i.e., there was a previous lack of techniques that provided direct biochemical or elemental imaging at the cellular level). In recent times, a suite of direct spectroscopic imaging techniques, such as Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence microscopy (XFM), and X-ray absorption spectroscopy (XAS) have been adapted, optimized and integrated into the field of neuroscience, to fill the above mentioned capability-gap. Advancements at synchrotron light sources, such as improved light intensity/flux, increased detector sensitivities and new capabilities of imaging/optics, has pushed the above suite of techniques beyond "proof-of-concept" studies, to routine application to study complex research problems in the field of neuroscience (and other scientific disciplines). This review examines several of the major advancements that have occurred over the last several years, with respect to FTIR, XFM and XAS capabilities at synchrotron facilities, and how the increases in technical capabilities have being integrated and used in the field of neuroscience.
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Affiliation(s)
- M J Pushie
- Department of Surgery, Division of Neurosurgery, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Saskatchewan S7N 5E5, Canada
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13
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Terzano R, Denecke MA, Falkenberg G, Miller B, Paterson D, Janssens K. Recent advances in analysis of trace elements in environmental samples by X-ray based techniques (IUPAC Technical Report). PURE APPL CHEM 2019; 91:1029-1063. [PMID: 32831407 PMCID: PMC7433040 DOI: 10.1515/pac-2018-0605] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Trace elements analysis is a fundamental challenge in environmental sciences. Scientists measure trace elements in environmental media in order to assess the quality and safety of ecosystems and to quantify the burden of anthropogenic pollution. Among the available analytical techniques, X-ray based methods are particularly powerful, as they can quantify trace elements in situ. Chemical extraction is not required, as is the case for many other analytical techniques. In the last few years, the potential for X-ray techniques to be applied in the environmental sciences has dramatically increased due to developments in laboratory instruments and synchrotron radiation facilities with improved sensitivity and spatial resolution. In this report, we summarize the principles of the X-ray based analytical techniques most frequently employed to study trace elements in environmental samples. We report on the most recent developments in laboratory and synchrotron techniques, as well as advances in instrumentation, with a special attention on X-ray sources, detectors, and optics. Lastly, we inform readers on recent applications of X-ray based analysis to different environmental matrices, such as soil, sediments, waters, wastes, living organisms, geological samples, and atmospheric particulate, and we report examples of sample preparation.
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Affiliation(s)
- Roberto Terzano
- Department of Soil, Plant and Food Sciences, University of Bari, Via Amendola 165/A, 70126 Bari, Italy
| | - Melissa A. Denecke
- The University of Manchester, Dalton Nuclear Institute, Oxford Road, Manchester M14 9PL, UK
| | - Gerald Falkenberg
- Deutsches Elektronen-Synchrotron DESY, Photon Science, Notkestr. 85, 22603 Hamburg, Germany
| | - Bradley Miller
- United States Environmental Protection Agency, National Enforcement Investigations Center, Lakewood, Denver, CO 80225, USA
| | - David Paterson
- Australian Synchrotron, ANSTO Clayton Campus, Clayton, Victoria 3168, Australia
| | - Koen Janssens
- Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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14
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Jones MWM, Phillips NW, Abbey B, Hare DJ, van Riessen GA, Vine DJ, de Jonge MD, McColl G. Simultaneous nanostructure and chemical imaging of intact whole nematodes. Chem Commun (Camb) 2019; 55:1052-1055. [DOI: 10.1039/c8cc09664c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Accurately locating biologically relevant elements at high resolution: simultaneous ptychography and fluorescence imaging of large specimens comes of age.
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Affiliation(s)
- Michael W. M. Jones
- Central Analytical Research Facility
- Institute of Future Environments
- Queensland University of Technology
- Brisbane
- Australia
| | - Nicholas W. Phillips
- ARC Centre of Excellence in Advanced Molecular Imaging
- La Trobe Institute for Molecular Sciences
- La Trobe University
- Victoria 3086
- Australia
| | - Brian Abbey
- Department of Engineering Science
- University of Oxford
- Oxford
- UK
- Department of Chemistry and Physics
| | - Dominic J. Hare
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Victoria
- Australia
| | - Grant A. van Riessen
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Victoria 3086
- Australia
| | - David J. Vine
- X-ray Science Division
- Advanced Photon Source
- Argonne National Laboratory
- Argonne
- USA
| | | | - Gawain McColl
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Victoria
- Australia
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15
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Ryan CG, Kirkham R, de Jonge MD, Siddons DP, van der Ent A, Pagés A, Boesenberg U, Kuczewski AJ, Dunn P, Jensen M, Liu W, Harris H, Moorhead GF, Paterson DJ, Howard DL, Afshar N, Garrevoet J, Spiers K, Falkenberg G, Woll AR, De Geronimo G, Carini GA, James SA, Jones MWM, Fisher LA, Pearce M. The Maia Detector and Event Mode. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/08940886.2018.1528430] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | - M. D. de Jonge
- Australian Synchrotron, ANSTO, Clayton, Victoria, Australia
| | - D. P. Siddons
- Brookhaven National Laboratory, Upton, New York, USA
| | - A. van der Ent
- Sustainable Minerals Institute, University of Queensland, Brisbane, Queensland, Australia
| | - A. Pagés
- CSIRO, Clayton, Victoria, Australia
| | - U. Boesenberg
- European X-ray Free-Electron Laser Facility, Schenefeld, Germany
| | | | - P. Dunn
- CSIRO, Clayton, Victoria, Australia
| | | | - W. Liu
- CSIRO, Clayton, Victoria, Australia
| | - H. Harris
- Department of Chemisty, University of Adelaide, Adelaide, Australia
| | | | - D. J. Paterson
- Australian Synchrotron, ANSTO, Clayton, Victoria, Australia
| | - D. L. Howard
- Australian Synchrotron, ANSTO, Clayton, Victoria, Australia
| | - N. Afshar
- Australian Synchrotron, ANSTO, Clayton, Victoria, Australia
| | - J. Garrevoet
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - K. Spiers
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - G. Falkenberg
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - A. R. Woll
- Cornell High Energy Synchrotron Source, Ithaca, New York, USA
| | | | - G. A. Carini
- Brookhaven National Laboratory, Upton, New York, USA
| | - S. A. James
- The Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - M. W. M. Jones
- Institute for Future Environments, Queensland University of Technology, Brisbane, Queensland, Australia
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16
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van der Ent A, Przybyłowicz WJ, de Jonge MD, Harris HH, Ryan CG, Tylko G, Paterson DJ, Barnabas AD, Kopittke PM, Mesjasz-Przybyłowicz J. X-ray elemental mapping techniques for elucidating the ecophysiology of hyperaccumulator plants. THE NEW PHYTOLOGIST 2018; 218:432-452. [PMID: 28994153 DOI: 10.1111/nph.14810] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/26/2017] [Indexed: 06/07/2023]
Abstract
Contents Summary 432 I. Introduction 433 II. Preparation of plant samples for X-ray micro-analysis 433 III. X-ray elemental mapping techniques 438 IV. X-ray data analysis 442 V. Case studies 443 VI. Conclusions 446 Acknowledgements 449 Author contributions 449 References 449 SUMMARY: Hyperaccumulators are attractive models for studying metal(loid) homeostasis, and probing the spatial distribution and coordination chemistry of metal(loid)s in their tissues is important for advancing our understanding of their ecophysiology. X-ray elemental mapping techniques are unique in providing in situ information, and with appropriate sample preparation offer results true to biological conditions of the living plant. The common platform of these techniques is a reliance on characteristic X-rays of elements present in a sample, excited either by electrons (scanning/transmission electron microscopy), protons (proton-induced X-ray emission) or X-rays (X-ray fluorescence microscopy). Elucidating the cellular and tissue-level distribution of metal(loid)s is inherently challenging and accurate X-ray analysis places strict demands on sample collection, preparation and analytical conditions, to avoid elemental redistribution, chemical modification or ultrastructural alterations. We compare the merits and limitations of the individual techniques, and focus on the optimal field of applications for inferring ecophysiological processes in hyperaccumulator plants. X-ray elemental mapping techniques can play a key role in answering questions at every level of metal(loid) homeostasis in plants, from the rhizosphere interface, to uptake pathways in the roots and shoots. Further improvements in technological capabilities offer exciting perspectives for the study of hyperaccumulator plants into the future.
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Affiliation(s)
- Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, Qld, 4072, Australia
- Laboratoire Sols et Environnement, UMR 1120, Université de Lorraine-INRA, 54518, Vandoeuvre-lès-Nancy, France
| | - Wojciech J Przybyłowicz
- iThemba LABS, National Research Foundation, PO Box 722, Somerset West, 7129, South Africa
- Faculty of Physics & Applied Computer Science, AGH University of Science and Technology, Kraków, PL30-059, Poland
| | - Martin D de Jonge
- X-ray Fluorescence Microscopy, Australian Synchrotron, Melbourne, Vic, 3168, Australia
| | - Hugh H Harris
- Department of Chemistry, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Chris G Ryan
- Commonwealth Scientific and Industrial Research Organization, Mineral Resources, Clayton, Vic, 3168, Australia
| | - Grzegorz Tylko
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, PL30-387, Poland
| | - David J Paterson
- X-ray Fluorescence Microscopy, Australian Synchrotron, Melbourne, Vic, 3168, Australia
| | - Alban D Barnabas
- iThemba LABS, National Research Foundation, PO Box 722, Somerset West, 7129, South Africa
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
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17
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Ackerman CM, Weber PK, Xiao T, Thai B, Kuo TJ, Zhang E, Pett-Ridge J, Chang CJ. Multimodal LA-ICP-MS and nanoSIMS imaging enables copper mapping within photoreceptor megamitochondria in a zebrafish model of Menkes disease. Metallomics 2018; 10:474-485. [PMID: 29507920 DOI: 10.1039/c7mt00349h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Copper is essential for eukaryotic life, and animals must acquire this nutrient through the diet and distribute it to cells and organelles for proper function of biological targets. Indeed, mutations in the central copper exporter ATP7A contribute to a spectrum of diseases, including Menkes disease, with symptoms ranging from neurodegeneration to lax connective tissue. As such, a better understanding of the fundamental impacts of ATP7A mutations on in vivo copper distributions is of relevance to those affected by these diseases. Here we combine metal imaging and optical imaging techniques at a variety of spatial resolutions to identify tissues and structures with altered copper levels in the Calamitygw71 zebrafish model of Menkes disease. Rapid profiling of tissue slices with LA-ICP-MS identified reduced copper levels in the brain, neuroretina, and liver of Menkes fish compared to control specimens. High resolution nanoSIMS imaging of the neuroretina, combined with electron and confocal microscopies, identified the megamitochondria of photoreceptors as loci of copper accumulation in wildtype fish, with lower levels of megamitochondrial copper observed in Calamitygw71 zebrafish. Interestingly, this localized copper decrease does not result in impaired photoreceptor development or altered megamitochondrial morphology, suggesting the prioritization of copper at sufficient levels for maintaining essential mitochondrial functions. Together, these data establish the Calamitygw71 zebrafish as an optically transparent in vivo model for the study of neural copper misregulation, illuminate a role for the ATP7A copper exporter in trafficking copper to the neuroretina, and highlight the utility of combining multiple imaging techniques for studying metals in whole organism settings with spatial resolution.
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Affiliation(s)
- Cheri M Ackerman
- Department of Chemistry, University of California, Berkeley, California, USA.
| | - Peter K Weber
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California, USA.
| | - Tong Xiao
- Department of Chemistry, University of California, Berkeley, California, USA. and Howard Hughes Medical Institute, University of California, Berkeley, California, USA
| | - Bao Thai
- Department of Chemistry, University of California, Berkeley, California, USA.
| | - Tiffani J Kuo
- Department of Chemistry, University of California, Berkeley, California, USA.
| | - Emily Zhang
- Department of Chemistry, University of California, Berkeley, California, USA.
| | - Jennifer Pett-Ridge
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California, USA.
| | - Christopher J Chang
- Department of Chemistry, University of California, Berkeley, California, USA. and Howard Hughes Medical Institute, University of California, Berkeley, California, USA and Department of Molecular and Cellular Biology, University of California, Berkeley, California, USA and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
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18
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Busser B, Moncayo S, Coll JL, Sancey L, Motto-Ros V. Elemental imaging using laser-induced breakdown spectroscopy: A new and promising approach for biological and medical applications. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.12.006] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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New EJ, Wimmer VC, Hare DJ. Promises and Pitfalls of Metal Imaging in Biology. Cell Chem Biol 2017; 25:7-18. [PMID: 29153850 DOI: 10.1016/j.chembiol.2017.10.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/02/2017] [Accepted: 10/18/2017] [Indexed: 10/18/2022]
Abstract
A picture may speak a thousand words, but if those words fail to form a coherent sentence there is little to be learned. As cutting-edge imaging technology now provides us the tools to decipher the multitude of roles played by metals and metalloids in molecular, cellular, and developmental biology, as well as health and disease, it is time to reflect on the advances made in imaging, the limitations discovered, and the future of a burgeoning field. In this Perspective, the current state of the art is discussed from a self-imposed contrarian position, as we not only highlight the major advances made over the years but use them as teachable moments to zoom in on challenges that remain to be overcome. We also describe the steps being taken toward being able to paint a completely undisturbed picture of cellular metal metabolism, which is, metaphorically speaking, the Holy Grail of the discipline.
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Affiliation(s)
- Elizabeth J New
- School of Chemistry, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Verena C Wimmer
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Dominic J Hare
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia; Elemental Bio-imaging Facility, University of Technology Sydney, Broadway, NSW 2007, Australia; Department of Pathology, The University of Melbourne, Parkville, VIC 3052, Australia.
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20
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Jones MWM, Hare DJ, James SA, de Jonge MD, McColl G. Radiation Dose Limits for Bioanalytical X-ray Fluorescence Microscopy. Anal Chem 2017; 89:12168-12175. [DOI: 10.1021/acs.analchem.7b02817] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Michael W. M. Jones
- Australian Synchrotron, Australian Nuclear Science and Technology Organisation, Clayton, Victoria 3168, Australia
- ARC
Centre of Excellence in Advanced Molecular Imaging, La Trobe Intitute
of Molecular Science, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Dominic J. Hare
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Simon A. James
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Martin D. de Jonge
- Australian Synchrotron, Australian Nuclear Science and Technology Organisation, Clayton, Victoria 3168, Australia
| | - Gawain McColl
- The
Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3052, Australia
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21
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Knauer B, Majka P, Watkins KJ, Taylor AWR, Malamanova D, Paul B, Yu HH, Bush AI, Hare DJ, Reser DH. Whole-brain metallomic analysis of the common marmoset (Callithrix jacchus). Metallomics 2017; 9:411-423. [PMID: 28246661 DOI: 10.1039/c7mt00012j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite the importance of transition metals for normal brain function, relatively little is known about the distribution of these elemental species across the different tissue compartments of the primate brain. In this study, we employed laser ablation-inductively coupled plasma-mass spectrometry on PFA-fixed brain sections obtained from two adult common marmosets. Concurrent cytoarchitectonic, myeloarchitectonic, and chemoarchitectonic measurements allowed for identification of the major neocortical, archaecortical, and subcortical divisions of the brain, and precise localisation of iron, manganese, and zinc concentrations within each division. Major findings across tissue compartments included: (1) differentiation of white matter tracts from grey matter based on manganese and zinc distribution; (2) high iron concentrations in the basal ganglia, cortex, and substantia nigra; (3) co-localization of high concentrations of iron and manganese in the primary sensory areas of the cerebral cortex; and (4) high manganese in the hippocampus. The marmoset has become a model species of choice for connectomic, aging, and transgenic studies in primates, and the application of metallomics to these disciplines has the potential to yield high translational and basic science value.
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Affiliation(s)
- B Knauer
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia and Research School, Ruhr University Bochum, Bochum, Germany
| | - P Majka
- Laboratory of Neuroinformatics, Department of Neurophysiology, Nencki Institute of Experimental Biology of Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - K J Watkins
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia
| | - A W R Taylor
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia
| | - D Malamanova
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia
| | - B Paul
- School of Earth Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia and The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Hsin-Hao Yu
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia
| | - A I Bush
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - D J Hare
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Victoria, Australia and Elemental Bio-imaging Facility, University of Technology Sydney, Broadway, NSW, Australia
| | - D H Reser
- Department of Physiology, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Clayton, Victoria 3800, Australia and Graduate Entry Medical Program, School of Rural Health, Monash University, Churchill, Victoria 3842, Australia
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22
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Hare DJ, New EJ, McColl G. Imaging metals in biology: pictures of metals in health and disease. Metallomics 2017; 9:343-345. [PMID: 28401971 DOI: 10.1039/c7mt90013a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Dominic J Hare
- Elemental Bio-imaging Facility, University of Technology Sydney, Broadway, New South Wales 2007, Australia.
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23
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Ackerman CM, Lee S, Chang CJ. Analytical Methods for Imaging Metals in Biology: From Transition Metal Metabolism to Transition Metal Signaling. Anal Chem 2017; 89:22-41. [PMID: 27976855 PMCID: PMC5827935 DOI: 10.1021/acs.analchem.6b04631] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Cheri M. Ackerman
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Sumin Lee
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Christopher J. Chang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, United States
- Howard Hughes Medical Institute, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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24
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Aschner M, Palinski C, Sperling M, Karst U, Schwerdtle T, Bornhorst J. Imaging metals in Caenorhabditis elegans. Metallomics 2017; 9:357-364. [DOI: 10.1039/c6mt00265j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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Hare DJ, Raven EP, Roberts BR, Bogeski M, Portbury SD, McLean CA, Masters CL, Connor JR, Bush AI, Crouch PJ, Doble PA. Laser ablation-inductively coupled plasma-mass spectrometry imaging of white and gray matter iron distribution in Alzheimer's disease frontal cortex. Neuroimage 2016; 137:124-131. [PMID: 27233149 DOI: 10.1016/j.neuroimage.2016.05.057] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 05/20/2016] [Accepted: 05/23/2016] [Indexed: 10/21/2022] Open
Abstract
Iron deposition in the brain is a feature of normal aging, though in several neurodegenerative disorders, including Alzheimer's disease, the rate of iron accumulation is more advanced than in age-matched controls. Using laser ablation-inductively coupled plasma-mass spectrometry imaging we present here a pilot study that quantitatively assessed the iron content of white and gray matter in paraffin-embedded sections from the frontal cortex of Alzheimer's and control subjects. Using the phosphorus image as a confirmed proxy for the white/gray matter boundary, we found that increased intrusion of iron into gray matter occurs in the Alzheimer's brain compared to controls, which may be indicative of either a loss of iron homeostasis in this vulnerable brain region, or provide evidence of increased inflammatory processes as a response to chronic neurodegeneration. We also observed a trend of increasing iron within the white matter of the frontal cortex, potentially indicative of disrupted iron metabolism preceding loss of myelin integrity. Considering the known potential toxicity of excessive iron in the brain, our results provide supporting evidence for the continuous development of novel magnetic resonance imaging approaches for assessing white and gray matter iron accumulation in Alzheimer's disease.
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Affiliation(s)
- Dominic J Hare
- Elemental Bio-imaging Facility, University of Technology Sydney, Australia; The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia.
| | - Erika P Raven
- Center for Functional and Molecular Imaging, Georgetown University Medical Center, United States; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, United States
| | - Blaine R Roberts
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia
| | - Mirjana Bogeski
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia
| | - Stuart D Portbury
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia
| | - Catriona A McLean
- Department of Anatomical Pathology, Alfred Hospital, Australia; Department of Medicine, Central Clinical School, Monash University, Australia
| | - Colin L Masters
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia
| | - James R Connor
- Department of Neural and Behavioral Sciences, Penn State Hershey Medical Center, United States; Department of Neurosurgery, Penn State Hershey Medical Center, United States
| | - Ashley I Bush
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Australia
| | - Peter J Crouch
- Department of Pathology, School of Biomedical Sciences, University of Melbourne, Australia
| | - Philip A Doble
- Elemental Bio-imaging Facility, University of Technology Sydney, Australia.
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26
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Hare DJ, Roberts BR, McColl G. Profiling changes to natively-bound metals during Caenorhabditis elegans development. RSC Adv 2016; 6:113689-113693. [DOI: 10.1039/c6ra22084c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper describes a proof-of-concept study using SEC-ICP-MS to profile changes in metalloproteins during Caenorhabditis elegans development.
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Affiliation(s)
- Dominic J. Hare
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
- The Florey Institute of Neuroscience and Mental Health
| | - Blaine R. Roberts
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville
- Australia
| | - Gawain McColl
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville
- Australia
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