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Duncan RJ, Nielsen D, Søreide JE, Varpe Ø, Tobin MJ, Pitusi V, Heraud P, Petrou K. Biomolecular profiles of Arctic sea-ice diatoms highlight the role of under-ice light in cellular energy allocation. ISME Commun 2024; 4:ycad010. [PMID: 38328449 PMCID: PMC10848308 DOI: 10.1093/ismeco/ycad010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 02/09/2024]
Abstract
Arctic sea-ice diatoms fuel polar marine food webs as they emerge from winter darkness into spring. Through their photosynthetic activity they manufacture the nutrients and energy that underpin secondary production. Sea-ice diatom abundance and biomolecular composition vary in space and time. With climate change causing short-term extremes and long-term shifts in environmental conditions, understanding how and in what way diatoms adjust biomolecular stores with environmental perturbation is important to gain insight into future ecosystem energy production and nutrient transfer. Using synchrotron-based Fourier transform infrared microspectroscopy, we examined the biomolecular composition of five dominant sea-ice diatom taxa from landfast ice communities covering a range of under-ice light conditions during spring, in Svalbard, Norway. In all five taxa, we saw a doubling of lipid and fatty acid content when light transmitted to the ice-water interface was >5% but <15% (85%-95% attenuation through snow and ice). We determined a threshold around 15% light transmittance after which biomolecular synthesis plateaued, likely because of photoinhibitory effects, except for Navicula spp., which continued to accumulate lipids. Increasing under-ice light availability led to increased energy allocation towards carbohydrates, but this was secondary to lipid synthesis, whereas protein content remained stable. It is predicted that under-ice light availability will change in the Arctic, increasing because of sea-ice thinning and potentially decreasing with higher snowfall. Our findings show that the nutritional content of sea-ice diatoms is taxon-specific and linked to these changes, highlighting potential implications for future energy and nutrient supply for the polar marine food web.
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Affiliation(s)
- Rebecca J Duncan
- School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, 2007, Australia
- Department of Arctic Biology, The University Centre in Svalbard, Longyearbyen, 9170, Norway
| | - Daniel Nielsen
- School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, 2007, Australia
| | - Janne E Søreide
- Department of Arctic Biology, The University Centre in Svalbard, Longyearbyen, 9170, Norway
| | - Øystein Varpe
- Department of Biological Sciences, University of Bergen, Bergen, 5020, Norway
- Norwegian Institute for Nature Research, Bergen, 5006, Norway
| | - Mark J Tobin
- Australian Synchrotron—ANSTO, Clayton, Victoria, 3168, Australia
| | - Vanessa Pitusi
- Department of Arctic Biology, The University Centre in Svalbard, Longyearbyen, 9170, Norway
- Department of Arctic and Marine Biology, University in Tromsø (UiT), Tromsø, 9010, Norway
| | - Philip Heraud
- Centre for Biospectroscopy, School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Katherina Petrou
- School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, 2007, Australia
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2
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Ranjan S, Ryu M, Morioka R, Kamegaki S, Ng SH, Smith D, Vongsvivut J, Tobin MJ, Juodkazis S, Morikawa J, Takamizawa S. Structural and Thermal Diffusivity Analysis of an Organoferroelastic Crystal Showing Scissor-Like Two-Directional Deformation Induced by Uniaxial Compression. J Am Chem Soc 2023; 145:23027-23036. [PMID: 37824218 DOI: 10.1021/jacs.3c05545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
A two-directional ferroelastic deformation in organic crystals is unprecedented owing to its anisotropic crystal packing, in contrast to isotropic symmetrical packing in inorganic compounds and polymers. Thereby, finding and constructing multidirectional ferroelastic deformations in organic compounds is undoubtedly complex and at once calls for deep comprehension. Herein, we demonstrate the first example of a two-directional ferroelastic deformation with a unique scissor-like movement in single crystals of trans-3-hexenedioic acid by the application of uniaxial compression stress. A detailed structural investigation of the mechanical deformation at the macroscopic and microscopic levels by three distinct force measurement techniques (including shear and three-point bending test), single crystal X-ray diffraction techniques, and polarized synchrotron-FTIR microspectroscopy highlighted that mechanical twinning promoted the deformation. The presence of two crystallographically equivalent faces and the herringbone arrangement promoted the two-directional ferroelastic deformation. In addition, anisotropic heat transfer properties in the parent and the deformed domains were investigated by thermal diffusivity measurement on all three axes using microscale temperature-wave analysis (μ-TWA). A correlation between the anisotropic structural arrangement and the difference in thermal diffusivity and mechanical behavior in the two-directional organoferroelastic deformation could be established. The structural and molecular level information from this two-directional ferroelastic deformation would lead to a more profound understanding of the structure-property relationship in multidirectional deformation in organic crystals.
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Affiliation(s)
- Subham Ranjan
- Department of Materials System Science, Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa 236-0027, Japan
| | - Meguya Ryu
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8563, Japan
| | - Ryota Morioka
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Shuji Kamegaki
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Soon Hock Ng
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Victoria 3122, Australia
| | - Daniel Smith
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Victoria 3122, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Victoria 3122, Australia
- International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Junko Morikawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
- International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Satoshi Takamizawa
- Department of Materials System Science, Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa 236-0027, Japan
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3
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Gassner C, Vongsvivut J, Ng SH, Ryu M, Tobin MJ, Juodkazis S, Morikawa J, Wood BR. Linearly Polarized Infrared Spectroscopy for the Analysis of Biological Materials. Appl Spectrosc 2023; 77:977-1008. [PMID: 37464791 DOI: 10.1177/00037028231180233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The analysis of biological samples with polarized infrared spectroscopy (p-IR) has long been a widely practiced method for the determination of sample orientation and structural properties. In contrast to earlier works, which employed this method to investigate the fundamental chemistry of biological systems, recent interests are moving toward "real-world" applications for the evaluation and diagnosis of pathological states. This focal point review provides an up-to-date synopsis of the knowledge of biological materials garnered through linearly p-IR on biomolecules, cells, and tissues. An overview of the theory with special consideration to biological samples is provided. Different modalities which can be employed along with their capabilities and limitations are outlined. Furthermore, an in-depth discussion of factors regarding sample preparation, sample properties, and instrumentation, which can affect p-IR analysis is provided. Additionally, attention is drawn to the potential impacts of analysis of biological samples with inherently polarized light sources, such as synchrotron light and quantum cascade lasers. The vast applications of p-IR for the determination of the structure and orientation of biological samples are given. In conclusion, with considerations to emerging instrumentation, findings by other techniques, and the shift of focus toward clinical applications, we speculate on the future directions of this methodology.
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Affiliation(s)
- Callum Gassner
- Centre for Biospectroscopy, School of Chemistry, Monash University, Clayton, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, Clayton, Australia
| | - Soon Hock Ng
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, Australia
| | - Meguya Ryu
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO-Australian Synchrotron, Clayton, Australia
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, Australia
| | - Junko Morikawa
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Bayden R Wood
- Centre for Biospectroscopy, School of Chemistry, Monash University, Clayton, Australia
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4
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Chakkumpulakkal Puthan Veettil T, Duffin RN, Roy S, Vongsvivut J, Tobin MJ, Martin M, Adegoke JA, Andrews PC, Wood BR. Synchrotron-Infrared Microspectroscopy of Live Leishmania major Infected Macrophages and Isolated Promastigotes and Amastigotes. Anal Chem 2023; 95:3986-3995. [PMID: 36787387 DOI: 10.1021/acs.analchem.2c04004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The prevalence of neglected tropical diseases (NTDs) is advancing at an alarming rate. The NTD leishmaniasis is now endemic in over 90 tropical and sub-tropical low socioeconomic countries. Current diagnosis for this disease involves serological assessment of infected tissue by either light microscopy, antibody tests, or culturing with in vitro or in vivo animal inoculation. Furthermore, co-infection by other pathogens can make it difficult to accurately determine Leishmania infection with light microscopy. Herein, for the first time, we demonstrate the potential of combining synchrotron Fourier-transform infrared (FTIR) microspectroscopy with powerful discrimination tools, such as partial least squares-discriminant analysis (PLS-DA), support vector machine-discriminant analysis (SVM-DA), and k-nearest neighbors (KNN), to characterize the parasitic forms of Leishmania major both isolated and within infected macrophages. For measurements performed on functional infected and uninfected macrophages in physiological solutions, the sensitivities from PLS-DA, SVM-DA, and KNN classification methods were found to be 0.923, 0.981, and 0.989, while the specificities were 0.897, 1.00, and 0.975, respectively. Cross-validated PLS-DA models on live amastigotes and promastigotes showed a sensitivity and specificity of 0.98 in the lipid region, while a specificity and sensitivity of 1.00 was achieved in the fingerprint region. The study demonstrates the potential of the FTIR technique to identify unique diagnostic bands and utilize them to generate machine learning models to predict Leishmania infection. For the first time, we examine the potential of infrared spectroscopy to study the molecular structure of parasitic forms in their native aqueous functional state, laying the groundwork for future clinical studies using more portable devices.
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Affiliation(s)
| | - Rebekah N Duffin
- School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Supti Roy
- Centre for Biospectroscopy, School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | | | - Mark J Tobin
- Australian Synchrotron, 800 Blackburn Rd, Clayton, Victoria 3168, Australia
| | - Miguela Martin
- School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - John A Adegoke
- School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Philip C Andrews
- School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Bayden R Wood
- Centre for Biospectroscopy, School of Chemistry, Faculty of Science, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
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5
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Han M, Smith D, Ng SH, Katkus T, John Francis Rajeswary AS, Praveen PA, Bambery KR, Tobin MJ, Vongsvivut J, Juodkazis S, Anand V. Single Shot Lensless Interferenceless Phase Imaging of Biochemical Samples Using Synchrotron near Infrared Beam. Biosensors (Basel) 2022; 12:1073. [PMID: 36551040 PMCID: PMC9775640 DOI: 10.3390/bios12121073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Phase imaging of biochemical samples has been demonstrated for the first time at the Infrared Microspectroscopy (IRM) beamline of the Australian Synchrotron using the usually discarded near-IR (NIR) region of the synchrotron-IR beam. The synchrotron-IR beam at the Australian Synchrotron IRM beamline has a unique fork shaped intensity distribution as a result of the gold coated extraction mirror shape, which includes a central slit for rejection of the intense X-ray beam. The resulting beam configuration makes any imaging task challenging. For intensity imaging, the fork shaped beam is usually tightly focused to a point on the sample plane followed by a pixel-by-pixel scanning approach to record the image. In this study, a pinhole was aligned with one of the lobes of the fork shaped beam and the Airy diffraction pattern was used to illuminate biochemical samples. The diffracted light from the samples was captured using a NIR sensitive lensless camera. A rapid phase-retrieval algorithm was applied to the recorded intensity distributions to reconstruct the phase information. The preliminary results are promising to develop multimodal imaging capabilities at the IRM beamline of the Australian Synchrotron.
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Affiliation(s)
- Molong Han
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Daniel Smith
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Soon Hock Ng
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Tomas Katkus
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | | | | | - Keith R. Bambery
- Infrared Microspectroscopy (IRM) Beamline, ANSTO—Australian Synchrotron, Clayton, VIC 3168, Australia
| | - Mark J. Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO—Australian Synchrotron, Clayton, VIC 3168, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO—Australian Synchrotron, Clayton, VIC 3168, Australia
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- Tokyo Tech World Research Hub Initiative, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Vijayakumar Anand
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia
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6
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Royce SG, Licciardi PV, Beh RC, Bourke JE, Donovan C, Hung A, Khurana I, Liang JJ, Maxwell S, Mazarakis N, Pitsillou E, Siow YY, Snibson KJ, Tobin MJ, Ververis K, Vongsvivut J, Ziemann M, Samuel CS, Tang MLK, El-Osta A, Karagiannis TC. Sulforaphane prevents and reverses allergic airways disease in mice via anti-inflammatory, antioxidant, and epigenetic mechanisms. Cell Mol Life Sci 2022; 79:579. [DOI: 10.1007/s00018-022-04609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/13/2022] [Accepted: 10/21/2022] [Indexed: 11/30/2022]
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7
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Weng ZH, Van Zwieten L, Tavakkoli E, Rose MT, Singh BP, Joseph S, Macdonald LM, Kimber S, Morris S, Rose TJ, Archanjo BS, Tang C, Franks AE, Diao H, Schweizer S, Tobin MJ, Klein AR, Vongsvivut J, Chang SLY, Kopittke PM, Cowie A. Microspectroscopic visualization of how biochar lifts the soil organic carbon ceiling. Nat Commun 2022; 13:5177. [PMID: 36056025 PMCID: PMC9440262 DOI: 10.1038/s41467-022-32819-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 08/17/2022] [Indexed: 11/29/2022] Open
Abstract
The soil carbon (C) saturation concept suggests an upper limit to the storage of soil organic carbon (SOC). It is set by the mechanisms that protect soil organic matter from mineralization. Biochar has the capacity to protect new C, including rhizodeposits and microbial necromass. However, the decadal-scale mechanisms by which biochar influences the molecular diversity, spatial heterogeneity, and temporal changes in SOC persistence, remain unresolved. Here we show that the soil C storage ceiling of a Ferralsol under subtropical pasture was raised by a second application of Eucalyptus saligna biochar 8.2 years after the first application—the first application raised the soil C storage ceiling by 9.3 Mg new C ha−1 and the second application raised this by another 2.3 Mg new C ha−1. Linking direct visual evidence from one-, two-, and three-dimensional analyses with SOC quantification, we found high spatial heterogeneity of C functional groups that resulted in the retention of rhizodeposits and microbial necromass in microaggregates (53–250 µm) and the mineral fraction (<53 µm). Microbial C-use efficiency was concomitantly increased by lowering specific enzyme activities, contributing to the decreased mineralization of native SOC by 18%. We suggest that the SOC ceiling can be lifted using biochar in (sub)tropical grasslands globally. A decadal-scale field trial revealed 1.01 Mg of rhizodeposit and necromass C was stored in soil microaggregate and mineral fractions per Mg biochar-C applied. Microspectroscopic analyses visualize mechanisms for this elevated soil C storage ceiling.
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Affiliation(s)
- Zhe Han Weng
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW, 2477, Australia.,School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia.,Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, VIC, 3086, Australia.,School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Lukas Van Zwieten
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW, 2477, Australia. .,Southern Cross University, East Lismore, NSW, 2480, Australia.
| | - Ehsan Tavakkoli
- NSW Department of Primary Industries, Wagga Wagga Agriculture Institute, Wagga Wagga, NSW, 2650, Australia.,School of Agriculture, Food & Wine, The University of Adelaide, Glen Osmond SA 5064, Adelaide, Australia
| | - Michael T Rose
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW, 2477, Australia
| | - Bhupinder Pal Singh
- School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia
| | - Stephen Joseph
- Institute for Superconducting and Electronic Materials and School of Physics, University of Wollongong, Wollongong, NSW, 2522, Australia.,School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Lynne M Macdonald
- CSIRO Agriculture & Food, Waite campus, Glen Osmond, SA, 5064, Australia
| | - Stephen Kimber
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW, 2477, Australia
| | - Stephen Morris
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW, 2477, Australia
| | - Terry J Rose
- Southern Cross University, East Lismore, NSW, 2480, Australia
| | - Braulio S Archanjo
- Materials Metrology Division, National Institute of Metrology, Quality and Technology (INMETRO), Rio de Janeiro, 25250-020, Brazil
| | - Caixian Tang
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Ashley E Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, 3086, Australia.,Centre for Future Landscapes, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Hui Diao
- Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Steffen Schweizer
- School of Life Sciences, Technical University of Munich, Munich, Germany
| | - Mark J Tobin
- Australian Nuclear Science and Technology Organisation (ANSTO), Australian Synchrotron, Clayton, VIC, 3168, Australia
| | - Annaleise R Klein
- Australian Nuclear Science and Technology Organisation (ANSTO), Australian Synchrotron, Clayton, VIC, 3168, Australia
| | - Jitraporn Vongsvivut
- Australian Nuclear Science and Technology Organisation (ANSTO), Australian Synchrotron, Clayton, VIC, 3168, Australia
| | - Shery L Y Chang
- Electron Microscope Unit, Mark Wainwright Analytical Centre and School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Annette Cowie
- School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia.,NSW Department of Primary Industries, Armidale, NSW, 2351, Australia
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8
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Al-Qatatsheh A, Capricho JC, Vongsvivut JP, Tobin MJ, Juodkazis S, Hameed N. Magnetic field induced alignment of macroradical epoxy for enhanced electrical properties. Soft Matter 2022; 18:5194-5203. [PMID: 35195649 DOI: 10.1039/d1sm01731d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Improving the electrical performance of macroradical epoxy thermosets to surpass the semiconductor threshold requires a comprehensive understanding of the electrical charge transport mechanisms and characteristics. In this study, we investigate the electrical properties of a non-conjugated radical thermoset in a rigid, three-dimensional (3D) motif cured under an external magnetic field. The outcomes of the four-angle analysis of the synchrotron IRM beamline provide for the first time quantitative insights into the molecular orientation at the atomic-scale level. These insights, in turn, were utilized to apply Quantum Computational modeling theories and Monte Carlo simulation to study the effect of the magnetic field-induced molecular alignment on tuning electrical charge transport characteristics. The results explored the impact of radical density on forming percolation networks, showing a robust protocol for designing polymers with high electrical/thermal conductivity.
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Affiliation(s)
- Ahmed Al-Qatatsheh
- School of Engineering, Swinburne University of Technology, Melbourne, VIC 3122, Australia.
| | - Jaworski C Capricho
- School of Engineering, Swinburne University of Technology, Melbourne, VIC 3122, Australia.
| | - Jitraporn Pimm Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Nishar Hameed
- School of Engineering, Swinburne University of Technology, Melbourne, VIC 3122, Australia.
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9
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Khambatta K, Hollings A, Sauzier G, Sanglard LMVP, Klein AR, Tobin MJ, Vongsvivut J, Gibberd MR, Payne AD, Naim F, Hackett MJ. "Wax On, Wax Off": In Vivo Imaging of Plant Physiology and Disease with Fourier Transform Infrared Reflectance Microspectroscopy. Adv Sci (Weinh) 2021; 8:e2101902. [PMID: 34338438 PMCID: PMC8498906 DOI: 10.1002/advs.202101902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Analysis of the epicuticular wax layer on the surface of plant leaves can provide a unique window into plant physiology and responses to environmental stimuli. Well-established analytical methodologies can quantify epicuticular wax composition, yet few methods are capable of imaging wax distribution in situ or in vivo. Here, the first report of Fourier transform infrared (FTIR) reflectance spectroscopic imaging as a non-destructive, in situ, method to investigate variation in epicuticular wax distribution at 25 µm spatial resolution is presented. The authors demonstrate in vivo imaging of alterations in epicuticular waxes during leaf development and in situ imaging during plant disease or exposure to environmental stressors. It is envisaged that this new analytical capability will enable in vivo studies of plants to provide insights into how the physiology of plants and crops respond to environmental stresses such as disease, soil contamination, drought, soil acidity, and climate change.
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Affiliation(s)
- Karina Khambatta
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Ashley Hollings
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Georgina Sauzier
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Lilian M. V. P. Sanglard
- Centre for Crop and Disease ManagementSchool of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Annaleise R. Klein
- Infrared Microspectroscopy (IRM) BeamlineANSTO – Australian Synchrotron800 Blackburn RoadClaytonVictoria3168Australia
| | - Mark J. Tobin
- Infrared Microspectroscopy (IRM) BeamlineANSTO – Australian Synchrotron800 Blackburn RoadClaytonVictoria3168Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) BeamlineANSTO – Australian Synchrotron800 Blackburn RoadClaytonVictoria3168Australia
| | - Mark R. Gibberd
- Centre for Crop and Disease ManagementSchool of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Alan D. Payne
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Fatima Naim
- Centre for Crop and Disease ManagementSchool of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
| | - Mark J. Hackett
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern Australia6102Australia
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10
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Anand V, Ng SH, Katkus T, Maksimovic J, Klein AR, Vongsvivut J, Bambery KR, Tobin MJ, Juodkazis S. Exploiting spatio-spectral aberrations for rapid synchrotron infrared imaging. J Synchrotron Radiat 2021; 28:1616-1619. [PMID: 34475308 DOI: 10.1107/s1600577521007104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
The Infrared Microspectroscopy Beamline at the Australian Synchrotron is equipped with a Fourier transform infrared (FTIR) spectrometer, which is coupled with an infrared (IR) microscope and a choice of two detectors: a single-point narrow-band mercury cadmium telluride (MCT) detector and a 64 × 64 multi-pixel focal plane array (FPA) imaging detector. A scanning-based point-by-point mapping method is commonly used with a tightly focused synchrotron IR beam at the sample plane, using an MCT detector and a matching 36× IR reflecting objective and condenser (NA = 0.5), which is time consuming. In this study, the beam size at the sample plane was increased using a 15× objective and the spatio-spectral aberrations were investigated. A correlation-based semi-synthetic computational optical approach was applied to assess the possibilities of exploiting the aberrations to perform rapid imaging rather than a mapping approach.
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Affiliation(s)
- Vijayakumar Anand
- Optical Sciences Center, Swinburne University of Technology, John Street, Melbourne, Victoria 3122, Australia
| | - Soon Hock Ng
- Optical Sciences Center, Swinburne University of Technology, John Street, Melbourne, Victoria 3122, Australia
| | - Tomas Katkus
- Optical Sciences Center, Swinburne University of Technology, John Street, Melbourne, Victoria 3122, Australia
| | - Jovan Maksimovic
- Optical Sciences Center, Swinburne University of Technology, John Street, Melbourne, Victoria 3122, Australia
| | - Annaleise R Klein
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Keith R Bambery
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Saulius Juodkazis
- Optical Sciences Center, Swinburne University of Technology, John Street, Melbourne, Victoria 3122, Australia
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11
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Wood BR, Kochan K, Bedolla DE, Salazar‐Quiroz N, Grimley SL, Perez‐Guaita D, Baker MJ, Vongsvivut J, Tobin MJ, Bambery KR, Christensen D, Pasricha S, Eden AK, Mclean A, Roy S, Roberts JA, Druce J, Williamson DA, McAuley J, Catton M, Purcell DFJ, Godfrey DI, Heraud P. Infrared Based Saliva Screening Test for COVID‐19. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bayden R. Wood
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging University of Melbourne Melbourne Victoria 3010 Australia
| | - Kamila Kochan
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
| | - Diana E. Bedolla
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
- Area Science Park Padriciano 99 34149 Trieste Italy
- Elettra-Sincrotrone Trieste S.S. 14 Km 163.5 34149 Trieste Italy
| | | | - Samantha L. Grimley
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
| | - David Perez‐Guaita
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
- FOCAS Research Institute Dublin Institute of Technology D04 Dublin Ireland
- Department of Analytical Chemistry University of Valencia 50 Dr. Moliner Street, Research Building 46100 Burjassot Valencia Spain
| | - Matthew J. Baker
- Department of Pure and Applied Chemistry University of Strathclyde, Technology and Innovation Centre Level 7 99 George Street Glasgow G1 1RD Scotland UK
| | - Jitraporn Vongsvivut
- ANSTO - Australian Synchrotron 800 Blackburn Road Clayton Victoria 3168 Australia
| | - Mark J. Tobin
- ANSTO - Australian Synchrotron 800 Blackburn Road Clayton Victoria 3168 Australia
| | - Keith R. Bambery
- ANSTO - Australian Synchrotron 800 Blackburn Road Clayton Victoria 3168 Australia
| | - Dale Christensen
- ANSTO - Australian Synchrotron 800 Blackburn Road Clayton Victoria 3168 Australia
| | - Shivani Pasricha
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
| | - Anthony K. Eden
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
| | - Aaron Mclean
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
| | - Supti Roy
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
| | - Jason A. Roberts
- Victorian Infectious Diseases Reference Laboratory The Peter Doherty Institute for Infection and Immunity Melbourne Vic Australia
| | - Julian Druce
- Victorian Infectious Diseases Reference Laboratory The Peter Doherty Institute for Infection and Immunity Melbourne Vic Australia
| | - Deborah A. Williamson
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
- Department of Microbiology Royal Melbourne Hospital Melbourne Australia
| | - Julie McAuley
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
| | - Mike Catton
- Victorian Infectious Diseases Reference Laboratory The Peter Doherty Institute for Infection and Immunity Melbourne Vic Australia
| | - Damian F. J. Purcell
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
| | - Dale I. Godfrey
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging University of Melbourne Melbourne Victoria 3010 Australia
- Department of Microbiology and Immunology University of Melbourne Melbourne Australia
| | - Philip Heraud
- Centre for Biospectroscopy and School of Chemistry Monash University Clayton Campus 3800 Victoria Australia
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging University of Melbourne Melbourne Victoria 3010 Australia
- Department of Microbiology and the Biomedicine Discovery Institute Faculty of Medicine, Nursing and Health Sciences Monash University Victoria Australia
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12
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Wood BR, Kochan K, Bedolla DE, Salazar-Quiroz N, Grimley SL, Perez-Guaita D, Baker MJ, Vongsvivut J, Tobin MJ, Bambery KR, Christensen D, Pasricha S, Eden AK, Mclean A, Roy S, Roberts JA, Druce J, Williamson DA, McAuley J, Catton M, Purcell DFJ, Godfrey DI, Heraud P. Infrared Based Saliva Screening Test for COVID-19. Angew Chem Int Ed Engl 2021; 60:17102-17107. [PMID: 34043272 PMCID: PMC8222893 DOI: 10.1002/anie.202104453] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Indexed: 11/23/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) has resulted in an unprecedented need for diagnostic testing that is critical in controlling the spread of COVID‐19. We propose a portable infrared spectrometer with purpose‐built transflection accessory for rapid point‐of‐care detection of COVID‐19 markers in saliva. Initially, purified virion particles were characterized with Raman spectroscopy, synchrotron infrared (IR) and AFM‐IR. A data set comprising 171 transflection infrared spectra from 29 subjects testing positive for SARS‐CoV‐2 by RT‐qPCR and 28 testing negative, was modeled using Monte Carlo Double Cross Validation with 50 randomized test and model sets. The testing sensitivity was 93 % (27/29) with a specificity of 82 % (23/28) that included positive samples on the limit of detection for RT‐qPCR. Herein, we demonstrate a proof‐of‐concept high throughput infrared COVID‐19 test that is rapid, inexpensive, portable and utilizes sample self‐collection thus minimizing the risk to healthcare workers and ideally suited to mass screening.
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Affiliation(s)
- Bayden R Wood
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Kamila Kochan
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia
| | - Diana E Bedolla
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia.,Area Science Park, Padriciano 99, 34149, Trieste, Italy.,Elettra-Sincrotrone Trieste, S.S. 14 Km 163.5, 34149, Trieste, Italy
| | - Natalia Salazar-Quiroz
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Samantha L Grimley
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - David Perez-Guaita
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia.,FOCAS Research Institute, Dublin Institute of Technology, D04, Dublin, Ireland.,Department of Analytical Chemistry, University of Valencia, 50 Dr. Moliner Street, Research Building, 46100, Burjassot Valencia, Spain
| | - Matthew J Baker
- Department of Pure and Applied Chemistry, University of Strathclyde, Technology and Innovation Centre Level 7, 99 George Street, Glasgow, G1 1RD, Scotland, UK
| | - Jitraporn Vongsvivut
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Mark J Tobin
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Keith R Bambery
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Dale Christensen
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Shivani Pasricha
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Anthony K Eden
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia
| | - Aaron Mclean
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia
| | - Supti Roy
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia
| | - Jason A Roberts
- Victorian Infectious Diseases Reference Laboratory, The Peter Doherty Institute for Infection and Immunity, Melbourne, Vic, Australia
| | - Julian Druce
- Victorian Infectious Diseases Reference Laboratory, The Peter Doherty Institute for Infection and Immunity, Melbourne, Vic, Australia
| | - Deborah A Williamson
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia.,Department of Microbiology, Royal Melbourne Hospital, Melbourne, Australia
| | - Julie McAuley
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Mike Catton
- Victorian Infectious Diseases Reference Laboratory, The Peter Doherty Institute for Infection and Immunity, Melbourne, Vic, Australia
| | - Damian F J Purcell
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Dale I Godfrey
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Melbourne, Victoria, 3010, Australia.,Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Philip Heraud
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton Campus, 3800, Victoria, Australia.,Australian Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Melbourne, Victoria, 3010, Australia.,Department of Microbiology and the Biomedicine Discovery Institute, Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, Australia
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13
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Hartnell D, Hollings A, Ranieri AM, Lamichhane HB, Becker T, Sylvain NJ, Hou H, Pushie MJ, Watkin E, Bambery KR, Tobin MJ, Kelly ME, Massi M, Vongsvivut J, Hackett MJ. Mapping sub-cellular protein aggregates and lipid inclusions using synchrotron ATR-FTIR microspectroscopy. Analyst 2021; 146:3516-3525. [PMID: 33881057 DOI: 10.1039/d1an00136a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visualising direct biochemical markers of cell physiology and disease pathology at the sub-cellular level is an ongoing challenge in the biological sciences. A suite of microscopies exists to either visualise sub-cellular architecture or to indirectly view biochemical markers (e.g. histochemistry), but further technique developments and innovations are required to increase the range of biochemical parameters that can be imaged directly, in situ, within cells and tissue. Here, we report our continued advancements in the application of synchrotron radiation attenuated total reflectance Fourier transform infrared (SR-ATR-FTIR) microspectroscopy to study sub-cellular biochemistry. Our recent applications demonstrate the much needed capability to map or image directly sub-cellular protein aggregates within degenerating neurons as well as lipid inclusions within bacterial cells. We also characterise the effect of spectral acquisition parameters on speed of data collection and the associated trade-offs between a realistic experimental time frame and spectral/image quality. Specifically, the study highlights that the choice of 8 cm-1 spectral resolutions provide a suitable trade-off between spectral quality and collection time, enabling identification of important spectroscopic markers, while increasing image acquisition by ∼30% (relative to 4 cm-1 spectral resolution). Further, this study explores coupling a focal plane array detector with SR-ATR-FTIR, revealing a modest time improvement in image acquisition time (factor of 2.8). Such information continues to lay the foundation for these spectroscopic methods to be readily available for, and adopted by, the biological science community to facilitate new interdisciplinary endeavours to unravel complex biochemical questions and expand emerging areas of study.
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Affiliation(s)
- David Hartnell
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia. and Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia
| | - Ashley Hollings
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia. and Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia
| | - Anna Maria Ranieri
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia.
| | - Hum Bahadur Lamichhane
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia.
| | - Thomas Becker
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia.
| | - Nicole J Sylvain
- Division of Neurosurgery, Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Canada S7N 5E5
| | - Huishu Hou
- Division of Neurosurgery, Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Canada S7N 5E5
| | - M Jake Pushie
- Division of Neurosurgery, Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Canada S7N 5E5
| | - Elizabeth Watkin
- Curtin Medical School, Curtin University, Bentley, Western Australia 6845
| | - Keith R Bambery
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Mark J Tobin
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Michael E Kelly
- Division of Neurosurgery, Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Canada S7N 5E5
| | - Massimiliano Massi
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia.
| | - Jitraporn Vongsvivut
- ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Mark J Hackett
- School of Molecular and Life Sciences, Curtin University, Bentley, 6845, Western Australia. and Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia
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14
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Silva DM, Dos Reis LG, Tobin MJ, Vongsvivut J, Traini D, Sencadas V. Co-delivery of inhalable therapies: Controlling active ingredients spatial distribution and temporal release. Mater Sci Eng C Mater Biol Appl 2021; 122:111831. [PMID: 33641884 DOI: 10.1016/j.msec.2020.111831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 11/28/2022]
Abstract
The management of respiratory diseases relies on the daily administration of multiple active pharmaceutical ingredients (APIs), leading to a lack of patient compliance and impaired quality of life. The frequency and dosage of the APIs result in increased side effects that further worsens the overall patient condition. Here, the manufacture of polymer-polymer core-shell microparticles for the sequential delivery of multiple APIs by inhalation delivery is reported. The microparticles, composed of biodegradable polymers silk fibroin (shell) and poly(L-lactic acid) (core), incorporating ciprofloxacin in the silk layer and ibuprofen (PLLA core) as the antibiotic and anti-inflammatory model APIs, respectively. The polymer-polymer core-shell structure and the spatial distribution of the APIs have been characterized using cutting-edge synchrotron macro ATR-FTIR technique, which was correlated with the respective API sequential release profiles. The APIs microparticles had a suitable size and aerosol properties for inhalation therapies (≤4.94 ± 0.21μm), with low cytotoxicity and immunogenicity in healthy lung epithelial cells. The APIs compartmentalization obtained by the microparticles not only could inhibit potential actives interactions but can provide modulation of the APIs release profiles via an inhalable single administration.
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Affiliation(s)
- Dina M Silva
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Larissa Gomes Dos Reis
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron (ANSTO), 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron (ANSTO), 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Vitor Sencadas
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.
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15
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Miszkiewicz JJ, Valentin F, Vrahnas C, Sims NA, Vongsvivut J, Tobin MJ, Clark G. Bone loss markers in the earliest Pacific Islanders. Sci Rep 2021; 11:3981. [PMID: 33597553 PMCID: PMC7889909 DOI: 10.1038/s41598-021-83264-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 01/25/2021] [Indexed: 11/09/2022] Open
Abstract
Kingdom of Tonga in Polynesia is one of the most obese nations where metabolic conditions, sedentary lifestyles, and poor quality diet are widespread. These factors can lead to poor musculoskeletal health. However, whether metabolic abnormalities such as osteoporosis occurred in archaeological populations of Tonga is unknown. We employed a microscopic investigation of femur samples to establish whether bone loss afflicted humans in this Pacific region approximately 3000 years ago. Histology, laser confocal microscopy, and synchrotron Fourier-transform infrared microspectroscopy were used to measure bone vascular canal densities, bone porosity, and carbonate and phosphate content of bone composition in eight samples extracted from adult Talasiu males and females dated to 2650 BP. Compared to males, samples from females had fewer vascular canals, lower carbonate and phosphate content, and higher bone porosity. Although both sexes showed evidence of trabecularised cortical bone, it was more widespread in females (35.5%) than males (15.8%). Our data suggest experiences of advanced bone resorption, possibly as a result of osteoporosis. This provides first evidence for microscopic bone loss in a sample of archaeological humans from a Pacific population widely afflicted by metabolic conditions today.
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Affiliation(s)
- Justyna J Miszkiewicz
- School of Archaeology and Anthropology, Australian National University, 44 Linnaeus Way, Canberra, ACT, 2601, Australia.
| | - Frédérique Valentin
- CNRS, UMR 7041, ArScAn, Ethnologie préhistorique, Maison René-Ginouvès, Archéologie et Ethnologie, 21 Allée de l'Université, 92023, Nanterre Cedex, France.,Archaeology and Natural History, School of Culture History and Language, College of Asia and the Pacific, Australian National University, Canberra, ACT, 2601, Australia
| | - Christina Vrahnas
- Bone Biology and Disease Unit, St. Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Melbourne, VIC, 3065, Australia.,Department of Medicine, St. Vincent's Hospital, The University of Melbourne, Melbourne, VIC, 3065, Australia.,MRC Protein Phosphorylation and Ubiquitylation Unit, James Black Centre, University of Dundee, Dundee, DD1 5EH, UK
| | - Natalie A Sims
- Department of Medicine, St. Vincent's Hospital, The University of Melbourne, Melbourne, VIC, 3065, Australia.,MRC Protein Phosphorylation and Ubiquitylation Unit, James Black Centre, University of Dundee, Dundee, DD1 5EH, UK
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, VIC, 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, VIC, 3168, Australia
| | - Geoffrey Clark
- Archaeology and Natural History, School of Culture History and Language, College of Asia and the Pacific, Australian National University, Canberra, ACT, 2601, Australia
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16
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Vongsvivut J, Pérez-Guaita D, Wood BR, Heraud P, Khambatta K, Hartnell D, Hackett MJ, Tobin MJ. Correction: Synchrotron macro ATR-FTIR microspectroscopy for high-resolution chemical mapping of single cells. Analyst 2021; 146:4709. [PMID: 34136888 DOI: 10.1039/d1an90049h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for 'Synchrotron macro ATR-FTIR microspectroscopy for high-resolution chemical mapping of single cells' by Jitraporn Vongsvivut et al., Analyst, 2019, 144, 3226-3238, DOI: 10.1039/C8AN01543K.
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Affiliation(s)
- Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia.
| | - David Pérez-Guaita
- Centre for Biospectroscopy, Monash University, Clayton, Victoria 3168, Australia
| | - Bayden R Wood
- Centre for Biospectroscopy, Monash University, Clayton, Victoria 3168, Australia
| | - Philip Heraud
- Centre for Biospectroscopy, Monash University, Clayton, Victoria 3168, Australia and Department of Microbiology and Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3168, Australia
| | - Karina Khambatta
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia and Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - David Hartnell
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia and Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Mark J Hackett
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia and Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia.
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17
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Silva DM, Liu R, Gonçalves AF, da Costa A, Castro Gomes A, Machado R, Vongsvivut J, J Tobin M, Sencadas V. Design of polymeric core-shell carriers for combination therapies. J Colloid Interface Sci 2020; 587:499-509. [PMID: 33388652 DOI: 10.1016/j.jcis.2020.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 12/28/2022]
Abstract
Particle engineering for co-delivery of drugs has the potential to combine multiple drugs with different pharmaceutical mechanisms within the same carrier, increasing the therapeutic efficiency while improving patient compliance. This work proposes a novel approach for producing polymer-polymer core-shell microparticles by multi-step processing of emulsion and spray drying. The particle core was obtained by an oil-in-water emulsion of poly(ε-caprolactone) (PCL) loaded with curcumin (CM), followed by the resuspension in poly(vinyl alcohol) (PVA) containing ciprofloxacin (CPx) forming the shell layer by spray-drying. The obtained core-shell particles showed an average size of 3.8 ± 1.2 μm, which is a suitable size for inhalation therapies. The spatial distribution of the drugs was studied using synchrotron-based macro attenuated total reflection Fourier transform infrared (macro ATR-FTIR) microspectroscopy to map the chemical distribution of the components within the particles and supported the presence of CM and CPx in the core and shell layers, respectively. The formation of the core-shell structure was further supported by the differences in the release profile of CM from these particles, when compared to the release profile observed for the single particle structure (PCL-CM). Both empty and drug-loaded carriers (up to 100 μg.mL-1) showed no cytotoxic effects on A549 cells while exhibiting the antibacterial activity of CPx against Gram-positive and Gram-negative bacteria. These polymer core-shell microparticles provide a promising route for the combination and sequential drug release therapies, with the potential to be used in inhalation therapies.
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Affiliation(s)
- Dina M Silva
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Ruy Liu
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Anabela F Gonçalves
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - André da Costa
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; IB-S (Institute of Science and Innovation for Sustainability), University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Andreia Castro Gomes
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; IB-S (Institute of Science and Innovation for Sustainability), University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Raul Machado
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; IB-S (Institute of Science and Innovation for Sustainability), University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron (ANSTO), 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron (ANSTO), 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Vitor Sencadas
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.
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18
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Miszkiewicz JJ, Rider C, Kealy S, Vrahnas C, Sims NA, Vongsvivut J, Tobin MJ, Bolunia MJLA, De Leon AS, Peñalosa AL, Pagulayan PS, Soriano AV, Page R, Oxenham MF. Asymmetric midshaft femur remodeling in an adult male with left sided hip joint ankylosis, Metal Period Nagsabaran, Philippines. Int J Paleopathol 2020; 31:14-22. [PMID: 32877865 DOI: 10.1016/j.ijpp.2020.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/22/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE This study investigated microstructural changes of the right and left midshaft femur in an archaeological individual afflicted with left-sided hip joint ankylosis to assess whether increased cortical porosity was present as a result of leg disuse. MATERIALS The individual is a middle-aged adult male excavated from the Metal Period (∼2000 BP) Nagsabaran, Luzon Island, Philippines. METHODS Following standard examination of femur gross anatomy and differential diagnosis of the hip joint fusion, ∼1 cm thick posterior midshaft femur samples were removed for microstructural examination. Using static histomorphometry, bone multi-cellular unit activity from Haversian canal (vascular pore) density, area, and circularity was reconstructed. Spatial positioning of Haversian canals was mapped using Geographic Information Systems software. Phosphate, carbonate, and carbonate:phosphate ratios were obtained using synchrotron-sourced Fourier transform infrared microspectroscopy. RESULTS The left femur had greater cortical pore density, with smaller and rounder vascular canals, in addition to lower matrix levels of phosphate and carbonate, when compared to the right femur. CONCLUSIONS Our data indicate compromised bone tissue in the left femur, and conform to expected bone functional adaptation paradigms of remodeling responses to pathological and biomechanical changes. SIGNIFICANCE The preservation of this individual's hip abnormality created a unique opportunity to evaluate intra-skeletal bone health asymmetry, which may help other researchers evaluate the presence of limb disuse in archaeological samples. LIMITATIONS A lack of lower limb data limits our interpretations to femur remodeling only. SUGGESTIONS FOR FURTHER RESEARCH Future research efforts should aim to examine the presence of remodeling changes in all bones of the lower limb. LAYUNIN Gamit ang buto ng magkabilang pemur ng isang taong natagpuan sa isang archaeological site na may sakit na ankylosis sa kaliwang balakang, pinag-aralan ang iba't-ibang microstructures galing sa gitnang bahagi o midshaft ng pemur upang malaman kung may makikitang mataas na cortical porosity ang buto dahil hindi ito malimit gamitin. GAMIT Ang pinag-aaralang buto ay galing sa isang indibidwal na tinatayang middle-age na lalaki na namuhay noong Panahon ng Metal (∼2000 BP) sa Nagsabaran, Cagayan, Republika ng Pilipinas. PAMAMARAAN Matapos ang unang pagkilatis sa femur at ang pagkilala ng sakit sa balakang, kumuha ng ∼1 sentimetro ng buto galing sa midshaft ng pemur upang lalong mapag-aralan ang kanyang microstructure. Gamit ang static histomorphometry, napag-aralan ang mga naiwang bakas ng multi-cellular unit activity ayon sa kapal, laki at pagkakabilog ng Haversian canal (vascular pore). Gumamit din ng Geographic Information Systems (GIS) software upang mapag-aralan ang kaugnayan ng posisyon ng Haversian canal. Panghuli, gumamit din ng synchroton-sourced Fourier transform infrared (sFTIR) microspectroscopy upang makuha ang bilang ng phosphate, carbonate, at carbonate:phosphate ratio. RESULTA Napag-alaman na ang kaliwang pemur ay mayroong higit na maraming cortical pores, maliit at mabilog na vascular canals, at mababang bilang ng phosphate, carbonate kung ihahambing sa kanang pemur. KONKLUSYON Ayon sa aming datos, ang kaliwang pemur ay umaayon sa mga katangian ng isang butong may sakit. Sumunod din ito sa inaasahang bone functional adaptation paradigms of remodeling ng buto dahil may sakit at hindi nagamit. KAHALAGAHAN Dahil maganda ang pagkakalibing ng buto ng balakang, nagkaroon ng pagkakataong makilatis ang kalusugan ng sinaunang-tao sa pamamagitan ng pag-aaral ng kalusugan ng buto. Dagdag pa, makakatulong din ito upang malaman kung ibang mananaliksik ang pag-aaral ng ibang butong hindi nagagamit mula sa archaeological site. LIMITASYON Dahil walang nakuhang ibang buto mula sa binti at paa, ang pemur lang ang naimbestigahan. MUNGKAHI PARA SA MGA SUSUNOD NA PAG-AARAL Kung magkakaroon ng pagkakataon sa susunod, dapat maimbistigahan ang lahat ng buto ng binti (lower limb).
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Affiliation(s)
- Justyna J Miszkiewicz
- School of Archaeology and Anthropology, Australian National University, 44 Linnaeus Way, Canberra, ACT, 2601 Australia.
| | - Claire Rider
- School of Archaeology and Anthropology, Australian National University, 44 Linnaeus Way, Canberra, ACT, 2601 Australia
| | - Shimona Kealy
- School of Culture, History, and Language, Archaeology and Natural History, College of Asia and the Pacific, Australian National University, Canberra, ACT, 0200, Australia; ARC Centre of Excellence for Australian Biodiversity and Heritage, Australian National University, Canberra, ACT, 0200, Australia
| | - Christina Vrahnas
- Bone Biology and Disease Unit, St. Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Melbourne, VIC, 3065, Australia; Department of Medicine, The University of Melbourne, St. Vincent's Hospital, Melbourne, VIC, 3065, Australia; MRC Protein Phosphorylation and Ubiquitylation Unit, James Black Centre, University of Dundee, Dundee, DD1 4HN, United Kingdom
| | - Natalie A Sims
- Bone Biology and Disease Unit, St. Vincent's Institute of Medical Research, 9 Princes Street, Fitzroy, Melbourne, VIC, 3065, Australia; Department of Medicine, The University of Melbourne, St. Vincent's Hospital, Melbourne, VIC, 3065, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, ANSTO - Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
| | | | - Alexandra S De Leon
- Archaeology Division, National Museum of the Philippines, P. Burgos St., Manila, 1000, Philippines
| | - Antonio L Peñalosa
- Archaeology Division, National Museum of the Philippines, P. Burgos St., Manila, 1000, Philippines
| | - Pablo S Pagulayan
- Archaeology Division, National Museum of the Philippines, P. Burgos St., Manila, 1000, Philippines
| | - Adan V Soriano
- Archaeology Division, National Museum of the Philippines, P. Burgos St., Manila, 1000, Philippines
| | - Ruth Page
- School of Archaeology and Anthropology, Australian National University, 44 Linnaeus Way, Canberra, ACT, 2601 Australia
| | - Marc F Oxenham
- School of Archaeology and Anthropology, Australian National University, 44 Linnaeus Way, Canberra, ACT, 2601 Australia; Department of Archaeology, University of Aberdeen, St. Mary's, Elphinstone Road, Aberdeen, AB24 3UF, Scotland, United Kingdom
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Ong L, Pax AP, Ong A, Vongsvivut J, Tobin MJ, Kentish SE, Gras SL. The effect of pH on the fat and protein within cream cheese and their influence on textural and rheological properties. Food Chem 2020; 332:127327. [DOI: 10.1016/j.foodchem.2020.127327] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/21/2020] [Accepted: 06/10/2020] [Indexed: 10/24/2022]
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20
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Mazarakis N, Vongsvivut J, Bambery KR, Ververis K, Tobin MJ, Royce SG, Samuel CS, Snibson KJ, Licciardi PV, Karagiannis TC. Investigation of molecular mechanisms of experimental compounds in murine models of chronic allergic airways disease using synchrotron Fourier-transform infrared microspectroscopy. Sci Rep 2020; 10:11713. [PMID: 32678217 PMCID: PMC7366655 DOI: 10.1038/s41598-020-68671-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 06/29/2020] [Indexed: 12/31/2022] Open
Abstract
The ovalbumin-induced (OVA) chronic allergic airways murine model is a well-established model for investigating pre-clinical therapies for chronic allergic airways diseases, such as asthma. Here, we examined the effects of several experimental compounds with potential anti-asthmatic effects including resveratrol (RV), relaxin (RLN), l-sulforaphane (LSF), valproic acid (VPA), and trichostatin A (TSA) using both a prevention and reversal model of chronic allergic airways disease. We undertook a novel analytical approach using focal plane array (FPA) and synchrotron Fourier-transform infrared (S-FTIR) microspectroscopic techniques to provide new insights into the mechanisms of action of these experimental compounds. Apart from the typical biological effects, S-FTIR microspectroscopy was able to detect changes in nucleic acids and protein acetylation. Further, we validated the reduction in collagen deposition induced by each experimental compound evaluated. Although this has previously been observed with conventional histological methods, the S-FTIR technique has the advantage of allowing identification of the type of collagen present. More generally, our findings highlight the potential utility of S-FTIR and FPA-FTIR imaging techniques in enabling a better mechanistic understanding of novel asthma therapeutics.
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Affiliation(s)
- Nadia Mazarakis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia.,Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, VIC, 3010, Australia.,Murdoch Children's Research Institute, Melbourne, VIC, 3004, Australia
| | | | | | - Katherine Ververis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia
| | - Mark J Tobin
- ANSTO Australian Synchrotron, Clayton, VIC, 3168, Australia
| | - Simon G Royce
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3168, Australia
| | - Chrishan S Samuel
- Department of Pharmacology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3168, Australia
| | - Kenneth J Snibson
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Paul V Licciardi
- Murdoch Children's Research Institute, Melbourne, VIC, 3004, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tom C Karagiannis
- Epigenomic Medicine Laboratory, Department of Diabetes, Central Clinical School, Monash University, Alfred Centre, 99 Commercial Road, Melbourne, VIC, 3004, Australia. .,Department of Clinical Pathology, University of Melbourne, Parkville, VIC, 3010, Australia.
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Takkalkar P, Tobin MJ, Vongsvivut J, Mukherjee T, Nizamuddin S, Griffin G, Kao N. Structural, thermal, rheological and optical properties of poly(lactic acid) films prepared through solvent casting and melt processing techniques. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Boseley RE, Dorakumbura BN, Howard DL, de Jonge MD, Tobin MJ, Vongsvivut J, Ho TTM, van Bronswijk W, Hackett MJ, Lewis SW. Revealing the Elemental Distribution within Latent Fingermarks Using Synchrotron Sourced X-ray Fluorescence Microscopy. Anal Chem 2019; 91:10622-10630. [PMID: 31322860 DOI: 10.1021/acs.analchem.9b01843] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Fingermarks are an important form of crime-scene trace evidence; however, their usefulness may be hampered by a variation in response or a lack of robustness in detection methods. Understanding the chemical composition and distribution within fingermarks may help explain variation in latent fingermark detection with existing methods and identify new strategies to increase detection capabilities. The majority of research in the literature describes investigation of organic components of fingermark residue, leaving the elemental distribution less well understood. The relative scarcity of information regarding the elemental distribution within fingermarks is in part due to previous unavailability of direct, micron resolution elemental mapping techniques. This capability is now provided at third generation synchrotron light sources, where X-ray fluorescence microscopy (XFM) provides micron or submicron spatial resolution and direct detection with sub-μM detection limits. XFM has been applied in this study to reveal the distribution of inorganic components within fingermark residue, including endogenous trace metals (Fe, Cu, Zn), diffusible ions (Cl-, K+, Ca2+), and exogeneous metals (Ni, Ti, Bi). This study incorporated a multimodal approach using XFM and infrared microspectroscopy analyses to demonstrate colocalization of endogenous metals within the hydrophilic organic components of fingermark residue. Additional experiments were then undertaken to investigate how sources of exogenous metals (e.g., coins and cosmetics) may be transferred to, and distributed within, latent fingermarks. Lastly, this study reports a preliminary assessment of how environmental factors such as exposure to aqueous environments may affect elemental distribution within fingermarks. Taken together, the results of this study advance our current understanding of fingermark composition and its spatial distribution of chemical components and may help explain detection variation observed during detection of fingermarks using standard forensic protocols.
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Affiliation(s)
- Rhiannon E Boseley
- School of Molecular and Life Sciences , Curtin University , GPO Box U1987 , Perth , Western Australia , Australia 6845.,Curtin Institute of Functional Molecules and Interfaces , GPO Box U1987 , Perth , Western Australia , Australia 6845
| | - Buddhika N Dorakumbura
- School of Molecular and Life Sciences , Curtin University , GPO Box U1987 , Perth , Western Australia , Australia 6845.,Curtin Institute of Functional Molecules and Interfaces , GPO Box U1987 , Perth , Western Australia , Australia 6845
| | - Daryl L Howard
- ANSTO, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Martin D de Jonge
- ANSTO, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Mark J Tobin
- ANSTO, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Jitraporn Vongsvivut
- ANSTO, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Tracey T M Ho
- ANSTO, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Wilhelm van Bronswijk
- School of Molecular and Life Sciences , Curtin University , GPO Box U1987 , Perth , Western Australia , Australia 6845
| | - Mark J Hackett
- School of Molecular and Life Sciences , Curtin University , GPO Box U1987 , Perth , Western Australia , Australia 6845.,Curtin Institute of Functional Molecules and Interfaces , GPO Box U1987 , Perth , Western Australia , Australia 6845
| | - Simon W Lewis
- School of Molecular and Life Sciences , Curtin University , GPO Box U1987 , Perth , Western Australia , Australia 6845.,Curtin Institute of Functional Molecules and Interfaces , GPO Box U1987 , Perth , Western Australia , Australia 6845
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23
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Ryu M, Honda R, Cernescu A, Vailionis A, Balčytis A, Vongsvivut J, Li JL, Linklater DP, Ivanova EP, Mizeikis V, Tobin MJ, Morikawa J, Juodkazis S. Nanoscale optical and structural characterisation of silk. Beilstein J Nanotechnol 2019; 10:922-929. [PMID: 31165019 PMCID: PMC6541335 DOI: 10.3762/bjnano.10.93] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
The nanoscale composition of silk defining its unique properties via a hierarchial structural anisotropy needs to be analysed at the highest spatial resolution of tens of nanometers corresponding to the size of fibrils made of β-sheets, which are the crystalline building blocks of silk. Nanoscale optical and structural properties of silk have been measured from 100 nm thick longitudinal slices of silk fibers with ca. 10 nm resolution, the highest so far. Optical sub-wavelength resolution in hyperspectral mapping of absorbance and molecular orientation were carried out for comparison at IR wavelengths of 2-10 μm using synchrotron radiation. A reliable distinction of transmission changes by only 1-2% as the anisotropy of amide bands was obtained from nanometer-thin slices of silk.
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Affiliation(s)
- Meguya Ryu
- Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Reo Honda
- Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | | | - Arturas Vailionis
- Stanford Nano Shared Facilities, Stanford University, Stanford, CA 94305, USA
- Department of Physics, Kaunas University of Technology, Studentu street 50, LT-51368 Kaunas, Lithuania
| | - Armandas Balčytis
- Swinburne University of Technology, John st., Hawthorn, 3122 Vic, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy Beamline, Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Jing-Liang Li
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3220, Australia
| | - Denver P Linklater
- Swinburne University of Technology, John st., Hawthorn, 3122 Vic, Australia
| | - Elena P Ivanova
- School of Science, RMIT University, Melbourne, VIC 3001, Australia
| | - Vygantas Mizeikis
- Research Institute of Electronics, Shizuoka University, Naka-ku, 3-5-3-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan
| | - Mark J Tobin
- Infrared Microspectroscopy Beamline, Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Junko Morikawa
- Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
| | - Saulius Juodkazis
- Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- Melbourne Center for Nanofabrication, Australian National Fabrication Facility, Clayton 3168, Melbourne, Australia
- Swinburne University of Technology, John st., Hawthorn, 3122 Vic, Australia
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24
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Timilsena YP, Vongsvivut J, Tobin MJ, Adhikari R, Barrow C, Adhikari B. Investigation of oil distribution in spray-dried chia seed oil microcapsules using synchrotron-FTIR microspectroscopy. Food Chem 2019; 275:457-466. [DOI: 10.1016/j.foodchem.2018.09.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 08/15/2018] [Accepted: 09/07/2018] [Indexed: 12/21/2022]
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25
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Cheeseman S, Truong VK, Walter V, Thalmann F, Marques CM, Hanssen E, Vongsvivut J, Tobin MJ, Baulin VA, Juodkazis S, Maclaughlin S, Bryant G, Crawford RJ, Ivanova EP. Interaction of Giant Unilamellar Vesicles with the Surface Nanostructures on Dragonfly Wings. Langmuir 2019; 35:2422-2430. [PMID: 30628784 DOI: 10.1021/acs.langmuir.8b03470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The waxy epicuticle of dragonfly wings contains a unique nanostructured pattern that exhibits bactericidal properties. In light of emerging concerns of antibiotic resistance, these mechano-bactericidal surfaces represent a particularly novel solution by which bacterial colonization and the formation of biofilms on biomedical devices can be prevented. Pathogenic bacterial biofilms on medical implant surfaces cause a significant number of human deaths every year. The proposed mechanism of bactericidal activity is through mechanical cell rupture; however, this is not yet well understood and has not been well characterized. In this study, we used giant unilamellar vesicles (GUVs) as a simplified cell membrane model to investigate the nature of their interaction with the surface of the wings of two dragonfly species, Austrothemis nigrescens and Trithemis annulata, sourced from Victoria, Australia, and the Baix Ebre and Terra Alta regions of Catalonia, Spain. Confocal laser scanning microscopy and cryo-scanning electron microscopy techniques were used to visualize the interactions between the GUVs and the wing surfaces. When exposed to both natural and gold-coated wing surfaces, the GUVs were adsorbed on the surface, exhibiting significant deformation, in the process of membrane rupture. Differences between the tensile rupture limit of GUVs composed of 1,2-dioleoyl- sn-glycero-3-phosphocholine and the isotropic tension generated from the internal osmotic pressure were used to indirectly determine the membrane tensions, generated by the nanostructures present on the wing surfaces. These were estimated as being in excess of 6.8 mN m-1, the first experimental estimate of such mechano-bactericidal surfaces. This simple model provides a convenient bottom-up approach toward understanding and characterizing the bactericidal properties of nanostructured surfaces.
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Affiliation(s)
- Samuel Cheeseman
- School of Science, College of Science, Engineering and Health , RMIT University , GPO Box 2476, Melbourne , Victoria 3001 , Australia
| | - Vi Khanh Truong
- School of Science, College of Science, Engineering and Health , RMIT University , GPO Box 2476, Melbourne , Victoria 3001 , Australia
- ARC Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
| | - Vivien Walter
- Université de Strasbourg, CNRS, Institut Charles Sadron, UPR022 , 23 rue du Loess , 67034 Strasbourg Cedex , France
| | - Fabrice Thalmann
- Université de Strasbourg, CNRS, Institut Charles Sadron, UPR022 , 23 rue du Loess , 67034 Strasbourg Cedex , France
| | - Carlos M Marques
- Université de Strasbourg, CNRS, Institut Charles Sadron, UPR022 , 23 rue du Loess , 67034 Strasbourg Cedex , France
| | - Eric Hanssen
- Advanced Microscopy Facility, Bio21 Institute , University of Melbourne , 30 Flemington Rd , Parkville , Victoria 3010 , Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy Beamline, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Mark J Tobin
- Infrared Microspectroscopy Beamline, Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Vladimir A Baulin
- Departament d'Enginyeria Quimica , Universitat Rovira, Virgili , 26 Av. dels Paisos Catalans , 43007 Tarragona , Spain
| | - Saulius Juodkazis
- Centre for Micro-Photonics and Industrial Research Institute Swinburne, Faculty of Science, Engineering and Technology , Swinburne University of Technology , P.O. Box 218, Hawthorn , Victoria 3122 , Australia
| | - Shane Maclaughlin
- ARC Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- BlueScope Steel Research , Port Kembla , New South Wales 2505 , Australia
| | - Gary Bryant
- School of Science, College of Science, Engineering and Health , RMIT University , GPO Box 2476, Melbourne , Victoria 3001 , Australia
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health , RMIT University , GPO Box 2476, Melbourne , Victoria 3001 , Australia
| | - Elena P Ivanova
- School of Science, College of Science, Engineering and Health , RMIT University , GPO Box 2476, Melbourne , Victoria 3001 , Australia
- ARC Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
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Vongsvivut J, Pérez-Guaita D, Wood BR, Heraud P, Khambatta K, Hartnell D, Hackett MJ, Tobin MJ. Synchrotron macro ATR-FTIR microspectroscopy for high-resolution chemical mapping of single cells. Analyst 2019; 144:3226-3238. [DOI: 10.1039/c8an01543k] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Coupling synchrotron IR beam to an ATR element enhances spatial resolution suited for high-resolution single cell analysis in biology, medicine and environmental science.
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Affiliation(s)
| | | | - Bayden R. Wood
- Centre for Biospectroscopy
- Monash University
- Clayton
- Australia
| | - Philip Heraud
- Centre for Biospectroscopy
- Monash University
- Clayton
- Australia
- Department of Microbiology and Biomedicine Discovery Institute
| | - Karina Khambatta
- Curtin Institute for Functional Molecules and Interfaces
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
| | - David Hartnell
- Curtin Institute for Functional Molecules and Interfaces
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
| | - Mark J. Hackett
- Curtin Institute for Functional Molecules and Interfaces
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
| | - Mark J. Tobin
- Infrared Microspectroscopy (IRM) Beamline
- Australian Synchrotron
- Clayton
- Australia
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27
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Benbow NL, Webber JL, Pawliszak P, Sebben DA, Ho TTM, Vongsvivut J, Tobin MJ, Krasowska M, Beattie DA. A Novel Soft Contact Piezo-Controlled Liquid Cell for Probing Polymer Films under Confinement using Synchrotron FTIR Microspectroscopy. Sci Rep 2018; 8:17804. [PMID: 30546121 PMCID: PMC6292912 DOI: 10.1038/s41598-018-34673-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/11/2018] [Indexed: 12/21/2022] Open
Abstract
Soft polymer films, such as polyelectrolyte multilayers (PEMs), are useful coatings in materials science. The properties of PEMs often rely on the degree of hydration, and therefore the study of these films in a hydrated state is critical to allow links to be drawn between their characteristics and performance in a particular application. In this work, we detail the development of a novel soft contact cell for studying hydrated PEMs (poly(sodium 4-styrenesulfonate)/poly(allylamine hydrochloride)) using FTIR microspectroscopy. FTIR spectroscopy can interrogate the nature of the polymer film and the hydration water contained therein. In addition to reporting spectra obtained for hydrated films confined at the solid-solid interface, we also report traditional ATR FTIR spectra of the multilayer. The spectra (microspectroscopy and ATR FTIR) reveal that the PEM film build-up proceeds as expected based on the layer-by-layer assembly methodology, with increasing signals from the polymer FTIR peaks with increasing bilayer number. In addition, the spectra obtained using the soft contact cell indicate that the PEM film hydration water has an environment/degree of hydrogen bonding that is affected by the chemistry of the multilayer polymers, based on differences in the spectra obtained for the hydration water within the film compared to that of bulk electrolyte.
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Affiliation(s)
- Natalie L Benbow
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.,School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Jessie L Webber
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.,School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Piotr Pawliszak
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.,School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Damien A Sebben
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Tracey T M Ho
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, Clayton, Victoria, 3168, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, Clayton, Victoria, 3168, Australia
| | - Marta Krasowska
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.,School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia, 5095, Australia
| | - David A Beattie
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia, 5095, Australia. .,School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia, 5095, Australia.
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Vrahnas C, Buenzli PR, Pearson TA, Pennypacker BL, Tobin MJ, Bambery KR, Duong LT, Sims NA. Differing Effects of Parathyroid Hormone, Alendronate, and Odanacatib on Bone Formation and on the Mineralization Process in Intracortical and Endocortical Bone of Ovariectomized Rabbits. Calcif Tissue Int 2018; 103:625-637. [PMID: 30019315 DOI: 10.1007/s00223-018-0455-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/10/2018] [Indexed: 02/02/2023]
Abstract
Bone is formed by deposition of a collagen-containing matrix (osteoid) that hardens over time as mineral crystals accrue and are modified; this continues until bone remodeling renews that site. Pharmacological agents for osteoporosis differ in their effects on bone remodeling, and we hypothesized that they may differently modify bone mineral accrual. We, therefore, assessed newly formed bone in mature ovariectomized rabbits treated with the anti-resorptive bisphosphonate alendronate (ALN-100µ g/kg/2×/week), the anabolic parathyroid hormone (PTH (1-34)-15µ g/kg/5×/week), or the experimental anti-resorptive odanacatib (ODN 7.5 µM/day), which suppresses bone resorption without suppressing bone formation. Treatments were administered for 10 months commencing 6 months after ovariectomy (OVX). Strength testing, histomorphometry, and synchrotron Fourier-transform infrared microspectroscopy were used to measure bone strength, bone formation, and mineral accrual, respectively, in newly formed endocortical and intracortical bone. In Sham and OVX endocortical and intracortical bone, three modifications occurred as the bone matrix aged: mineral accrual (increase in mineral:matrix ratio), carbonate substitution (increase in carbonate:mineral ratio), and collagen molecular compaction (decrease in amide I:II ratio). ALN suppressed bone formation but mineral accrued normally at those sites where bone formation occurred. PTH stimulated bone formation on endocortical, periosteal, and intracortical bone surfaces, but mineral accrual and carbonate substitution were suppressed, particularly in intracortical bone. ODN treatment did not suppress bone formation, but newly deposited endocortical bone matured more slowly with ODN, and ODN-treated intracortical bone had less carbonate substitution than controls. In conclusion, these agents differ in their effects on the bone matrix. While ALN suppresses bone formation, it does not modify bone mineral accrual in endocortical or intracortical bone. While ODN does not suppress bone formation, it slows matrix maturation. PTH stimulates modelling-based bone formation not only on endocortical and trabecular surfaces, but may also do so in intracortical bone; at this site, new bone deposited contains less mineral than normal.
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Affiliation(s)
- Christina Vrahnas
- St. Vincent's Institute of Medical Research, Fitzroy, VIC, Australia
- Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, VIC, Australia
| | - Pascal R Buenzli
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Thomas A Pearson
- St. Vincent's Institute of Medical Research, Fitzroy, VIC, Australia
| | | | - Mark J Tobin
- The Australian Synchrotron, Clayton, VIC, Australia
| | - Keith R Bambery
- The Australian Synchrotron, Clayton, VIC, Australia
- Australian Nuclear Science and Technology Organisation, The Australian Synchrotron, Lucas Heights, NSW, Australia
| | - Le T Duong
- MRL, Merck & Co., Inc., West Point, PA, USA
| | - Natalie A Sims
- St. Vincent's Institute of Medical Research, Fitzroy, VIC, Australia.
- Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, VIC, Australia.
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29
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Hernandez-Soriano MC, Dalal RC, Warren FJ, Wang P, Green K, Tobin MJ, Menzies NW, Kopittke PM. Soil Organic Carbon Stabilization: Mapping Carbon Speciation from Intact Microaggregates. Environ Sci Technol 2018; 52:12275-12284. [PMID: 30351046 DOI: 10.1021/acs.est.8b03095] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The clearing of land for agricultural production depletes soil organic carbon (OC) reservoirs, yet despite their importance, the mechanisms by which C is stabilized in soils remain unclear. Using synchrotron-based infrared microspectroscopy, we have for the first time obtained in situ, laterally resolved data regarding the speciation of C within sections taken from intact free microaggregates from two contrasting soils (Vertisol and Oxisol, 0-20 cm depth) impacted upon by long-term (up to 79 y) agricultural production. There was no apparent gradient in the C concentration from the aggregate surface to the interior for any of the three forms of C examined (aliphatic C, aromatic C, and polysaccharide C). Rather, organo-mineral interactions were of critical importance in influencing overall C stability, particularly for aliphatic C, supporting the hypothesis that microaggregates form through organo-mineral interactions. However, long-term cropping substantially decreased the magnitude of the organo-mineral interactions for all three forms of C. Thus, although organo-mineral interactions are important for OC stability, C forms associated with the mineral phases are not entirely resistant to degradation. These results provide important insights into the underlying mechanisms by which microaggregates form and the factors influencing the persistence of OC in soils.
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Affiliation(s)
- Maria C Hernandez-Soriano
- School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland 4072 , Australia
| | - Ram C Dalal
- School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland 4072 , Australia
| | - Frederick J Warren
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation , The University of Queensland , St. Lucia , Queensland 4072 , Australia
| | - Peng Wang
- Nanjing Agricultural University , College of Resources and Environmental Sciences , Nanjing , Jiangsu 210009 , China
- Centre for Soil and Environmental Science, School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland , 4072 , Australia
| | - Kathryn Green
- Centre for Microscopy and Microanalysis , The University of Queensland , St. Lucia , Queensland 4072 , Australia
| | - Mark J Tobin
- Australian Synchrotron, Clayton , Victoria 3168 , Australia
| | - Neal W Menzies
- School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland 4072 , Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland 4072 , Australia
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30
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Cheeseman S, Owen S, Truong VK, Meyer D, Ng SH, Vongsvivut J, Linklater D, Tobin MJ, Werner M, Baulin VA, Luque P, Marchant R, Juodkazis S, Crawford RJ, Ivanova EP. Pillars of Life: Is There a Relationship between Lifestyle Factors and the Surface Characteristics of Dragonfly Wings? ACS Omega 2018; 3:6039-6046. [PMID: 30221231 PMCID: PMC6130794 DOI: 10.1021/acsomega.8b00776] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 05/07/2018] [Indexed: 05/05/2023]
Abstract
Dragonfly wings are of great interest to researchers investigating biomimetic designs for antiwetting and antibacterial surfaces. The waxy epicuticular layer on the membrane of dragonfly wings possesses a unique surface nanoarchitecture that consists of irregular arrays of nanoscale pillars. This architecture confers superhydrophobic, self-cleaning, antiwetting, and antibiofouling behaviors. There is some evidence available that suggests that lifestyle factors may have influenced the evolution of the wing nanostructures and, therefore, the resulting properties of the wings; however, it appears that no systematic studies have been performed that have compared the wing surface features across a range of dragonfly species. Here, we provided a comparison of relevant wing surface characteristics, including chemical composition, wettability, and nanoarchitecture, of seven species of dragonfly from three families including Libellulidae, Aeshnidae, and Gomphidae. The characteristic nanopillar arrays were found to be present, and the chemical composition and the resultant wing surface superhydrophobicity were found to be well-conserved across all of the species studied. However, subtle differences were observed between the height, width, and density of nanofeatures and water droplet bouncing behavior on the wing surfaces. The results of this research will contribute to an understanding of the physical and chemical surface features that are optimal for the design of antiwetting and antibacterial surfaces.
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Affiliation(s)
- Samuel Cheeseman
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Stephanie Owen
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Vi Khanh Truong
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Denny Meyer
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Soon Hock Ng
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Jitraporn Vongsvivut
- Infrared
Microspectroscopy Beamline, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Denver Linklater
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Mark J. Tobin
- Infrared
Microspectroscopy Beamline, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Marco Werner
- Departament
d’Enginyeria Quimica, Universitat
Rovira i Virgili, 26 Av. dels Paisos Catalans, 43007 Tarragona, Spain
| | - Vladimir A. Baulin
- Departament
d’Enginyeria Quimica, Universitat
Rovira i Virgili, 26 Av. dels Paisos Catalans, 43007 Tarragona, Spain
| | - Pere Luque
- Museu
de les Terres de l’Ebre, Gran Capità, 34, 43870 Amposta, Spain
| | - Richard Marchant
- Museum Victoria, P.O. Box 666, Melbourne, Victoria 3001, Australia
| | - Saulius Juodkazis
- School
of Science, Faculty of Science, Engineering and Technology, and School of Health
Sciences, Faculty of Health, Arts and Design, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Russell J. Crawford
- School
of Science, College of Science, Engineering and Health, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Elena P. Ivanova
- School
of Science, College of Science, Engineering and Health, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
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31
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Truong VK, Vongsvivut J, Geeganagamage NM, Tobin MJ, Luque P, Baulin V, Werner M, Maclaughlin S, Crawford RJ, Ivanova EP. Study of melanin localization in the mature male Calopteryx haemorrhoidalis damselfly wings. J Synchrotron Radiat 2018; 25:874-877. [PMID: 29714199 DOI: 10.1107/s1600577518004460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
Damselflies Calopteryx haemorrhoidalis exhibiting black wings are found in the western Mediterranean, Algeria, France, Italy, Spain and Monaco. Wing pigmentation is caused by the presence of melanin, which is involved in physiological processes including defence reactions, wound healing and sclerotization of the insect. Despite the important physiological roles of melanin, the presence and colour variation among males and females of the C. haemorrhoidalis species and the localization of the pigment within the wing membrane remain poorly understood. In this study, infrared (IR) microspectroscopy, coupled with the highly collimated synchrotron IR beam, was employed in order to identify the distribution of the pigments in the wings at a high spatial resolution. It was found that the melanin is localized in the procuticle of the C. haemorrhoidalis damselfly wings, distributed homogeneously within this layer, and not associated with the lipids of the epicuticle.
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Affiliation(s)
- Vi Khanh Truong
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
| | | | | | - Mark J Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
| | - Pere Luque
- Museu de les Terres de l'Ebre, 34 Gran Capità, 43870 Amposta, Spain
| | - Vladimir Baulin
- Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, 26 Avinguda dels Paisos Catalans, 43007 Tarragona, Spain
| | - Marco Werner
- Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, 26 Avinguda dels Paisos Catalans, 43007 Tarragona, Spain
| | | | - Russell J Crawford
- College of Science, Engineering and Health, RMIT University, Melbourne 3001, Victoria, Australia
| | - Elena P Ivanova
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
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32
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Viete DR, Hacker BR, Allen MB, Seward GGE, Tobin MJ, Kelley CS, Cinque G, Duckworth AR. Metamorphic records of multiple seismic cycles during subduction. Sci Adv 2018; 4:eaaq0234. [PMID: 29568800 PMCID: PMC5862461 DOI: 10.1126/sciadv.aaq0234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 02/07/2018] [Indexed: 05/31/2023]
Abstract
Large earthquakes occur in rocks undergoing high-pressure/low-temperature metamorphism during subduction. Rhythmic major-element zoning in garnet is a common product of such metamorphism, and one that must record a fundamental subduction process. We argue that rhythmic major-element zoning in subduction zone garnets from the Franciscan Complex, California, developed in response to growth-dissolution cycles driven by pressure pulses. Using electron probe microanalysis and novel techniques in Raman and synchrotron Fourier transform infrared microspectroscopy, we demonstrate that at least four such pressure pulses, of magnitude 100-350 MPa, occurred over less than 300,000 years. These pressure magnitude and time scale constraints are most consistent with the garnet zoning having resulted from periodic overpressure development-dissipation cycles, related to pore-fluid pressure fluctuations linked to earthquake cycles. This study demonstrates that some metamorphic reactions can track individual earthquake cycles and thereby opens new avenues to the study of seismicity.
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Affiliation(s)
- Daniel R. Viete
- Department of Earth & Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Bradley R. Hacker
- Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93101, USA
| | - Mark B. Allen
- Department of Earth Sciences, Durham University, Durham DH1 3LE, UK
| | - Gareth G. E. Seward
- Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93101, USA
| | - Mark J. Tobin
- Australian Synchrotron, Clayton, Victoria 3168, Australia
| | - Chris S. Kelley
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
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33
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Ramdzan YM, Trubetskov MM, Ormsby AR, Newcombe EA, Sui X, Tobin MJ, Bongiovanni MN, Gras SL, Dewson G, Miller JML, Finkbeiner S, Moily NS, Niclis J, Parish CL, Purcell AW, Baker MJ, Wilce JA, Waris S, Stojanovski D, Böcking T, Ang CS, Ascher DB, Reid GE, Hatters DM. Huntingtin Inclusions Trigger Cellular Quiescence, Deactivate Apoptosis, and Lead to Delayed Necrosis. Cell Rep 2018; 19:919-927. [PMID: 28467905 DOI: 10.1016/j.celrep.2017.04.029] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 03/16/2017] [Accepted: 04/10/2017] [Indexed: 12/11/2022] Open
Abstract
Competing models exist in the literature for the relationship between mutant Huntingtin exon 1 (Httex1) inclusion formation and toxicity. In one, inclusions are adaptive by sequestering the proteotoxicity of soluble Httex1. In the other, inclusions compromise cellular activity as a result of proteome co-aggregation. Using a biosensor of Httex1 conformation in mammalian cell models, we discovered a mechanism that reconciles these competing models. Newly formed inclusions were composed of disordered Httex1 and ribonucleoproteins. As inclusions matured, Httex1 reconfigured into amyloid, and other glutamine-rich and prion domain-containing proteins were recruited. Soluble Httex1 caused a hyperpolarized mitochondrial membrane potential, increased reactive oxygen species, and promoted apoptosis. Inclusion formation triggered a collapsed mitochondrial potential, cellular quiescence, and deactivated apoptosis. We propose a revised model where sequestration of soluble Httex1 inclusions can remove the trigger for apoptosis but also co-aggregate other proteins, which curtails cellular metabolism and leads to a slow death by necrosis.
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Affiliation(s)
- Yasmin M Ramdzan
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mikhail M Trubetskov
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Angelique R Ormsby
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Estella A Newcombe
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Xiaojing Sui
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mark J Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
| | | | - Sally L Gras
- Department of Chemical and Biomolecular Engineering and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Grant Dewson
- Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
| | - Jason M L Miller
- University of Michigan Kellogg Eye Center, 1000 Wall Street, Ann Arbor, MI 48105, USA
| | - Steven Finkbeiner
- Gladstone Institute of Neurological Disease, 1650 Owens Street, San Francisco, CA 94158-2261, USA
| | - Nagaraj S Moily
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Jonathan Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Anthony W Purcell
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Michael J Baker
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Jacqueline A Wilce
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Saboora Waris
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Diana Stojanovski
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Till Böcking
- School of Medical Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Ching-Seng Ang
- Bio21 Mass Spectrometry and Proteomics Facility, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - David B Ascher
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Gavin E Reid
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Danny M Hatters
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia.
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Dorakumbura BN, Boseley RE, Becker T, Martin DE, Richter A, Tobin MJ, van Bronswjik W, Vongsvivut J, Hackett MJ, Lewis SW. Revealing the spatial distribution of chemical species within latent fingermarks using vibrational spectroscopy. Analyst 2018; 143:4027-4039. [DOI: 10.1039/c7an01615h] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Latent fingermark chemistry revealed by Raman microscopy and Synchrotron ATR-FTIR.
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Affiliation(s)
- Buddhika N. Dorakumbura
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
- Curtin Institute of Functional Molecules and Interfaces
| | - Rhiannon E. Boseley
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
- Curtin Institute of Functional Molecules and Interfaces
| | - Thomas Becker
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
- Curtin Institute of Functional Molecules and Interfaces
| | | | | | | | | | | | - Mark J. Hackett
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
- Curtin Institute of Functional Molecules and Interfaces
| | - Simon W. Lewis
- School of Molecular and Life Sciences
- Curtin University
- Perth
- Australia
- Curtin Institute of Functional Molecules and Interfaces
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35
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Vongsvivut J, Truong VK, Al Kobaisi M, Maclaughlin S, Tobin MJ, Crawford RJ, Ivanova EP. Synchrotron macro ATR-FTIR microspectroscopic analysis of silica nanoparticle-embedded polyester coated steel surfaces subjected to prolonged UV and humidity exposure. PLoS One 2017; 12:e0188345. [PMID: 29253012 PMCID: PMC5734741 DOI: 10.1371/journal.pone.0188345] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 11/06/2017] [Indexed: 01/21/2023] Open
Abstract
Surface modification of polymers and paints is a popular and effective way to enhance the properties of these materials. This can be achieved by introducing a thin coating that preserves the bulk properties of the material, while protecting it from environmental exposure. Suitable materials for such coating technologies are inorganic oxides, such as alumina, titania and silica; however, the fate of these materials during long-term environmental exposure is an open question. In this study, polymer coatings that had been enhanced with the addition of silica nanoparticles (SiO2NPs) and subsequently subjected to environmental exposure, were characterized both before and after the exposure to determine any structural changes resulting from the exposure. High-resolution synchrotron macro ATR-FTIR microspectroscopy and surface topographic techniques, including optical profilometry and atomic force microscopy (AFM), were used to determine the long-term effect of the environment on these dual protection layers after 3 years of exposure to tropical and sub-tropical climates in Singapore and Queensland (Australia). Principal component analysis (PCA) based on the synchrotron macro ATR-FTIR spectral data revealed that, for the 9% (w/w) SiO2NP/polymer coating, a clear discrimination was observed between the control group (no environmental exposure) and those samples subjected to three years of environmental exposure in both Singapore and Queensland. The PCA loading plots indicated that, over the three year exposure period, a major change occurred in the triazine ring vibration in the melamine resins. This can be attributed to the triazine ring being very sensitive to hydrolysis under the high humidity conditions in tropical/sub-tropical environments. This work provides the first direct molecular evidence, acquired using a high-resolution mapping technique, of the climate-induced chemical evolution of a polyester coating. The observed changes in the surface topography of the coating are consistent with the changes in chemical composition.
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Affiliation(s)
- Jitraporn Vongsvivut
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, Clayton, Victoria, Australia
| | - Vi Khanh Truong
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- ARC Research Hub for Australian Steel Manufacturing, Wollongong, New South Wales, Australia
| | - Mohammad Al Kobaisi
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Shane Maclaughlin
- ARC Research Hub for Australian Steel Manufacturing, Wollongong, New South Wales, Australia
- BlueScope Steel Research, Port Kembla, New South Wales, Australia
| | - Mark J. Tobin
- Infrared Microspectroscopy (IRM) Beamline, Australian Synchrotron, Clayton, Victoria, Australia
| | - Russell J. Crawford
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria, Australia
| | - Elena P. Ivanova
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- ARC Research Hub for Australian Steel Manufacturing, Wollongong, New South Wales, Australia
- * E-mail:
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Reis R, Duke M, Merenda A, Winther-Jensen B, Puskar L, Tobin MJ, Orbell JD, Dumée LF. Customizing the surface charge of thin-film composite membranes by surface plasma thin film polymerization. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Watson GS, Green DW, Cribb BW, Brown CL, Meritt CR, Tobin MJ, Vongsvivut J, Sun M, Liang AP, Watson JA. Insect Analogue to the Lotus Leaf: A Planthopper Wing Membrane Incorporating a Low-Adhesion, Nonwetting, Superhydrophobic, Bactericidal, and Biocompatible Surface. ACS Appl Mater Interfaces 2017; 9:24381-24392. [PMID: 28640578 DOI: 10.1021/acsami.7b08368] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Nature has produced many intriguing and spectacular surfaces at the micro- and nanoscales. These small surface decorations act for a singular or, in most cases, a range of functions. The minute landscape found on the lotus leaf is one such example, displaying antiwetting behavior and low adhesion with foreign particulate matter. Indeed the lotus leaf has often been considered the "benchmark" for such properties. One could expect that there are animal counterparts of this self-drying and self-cleaning surface system. In this study, we show that the planthopper insect wing (Desudaba danae) exhibits a remarkable architectural similarity to the lotus leaf surface. Not only does the wing demonstrate a topographical likeness, but some surface properties are also expressed, such as nonwetting behavior and low adhering forces with contaminants. In addition, the insect-wing cuticle exhibits an antibacterial property in which Gram-negative bacteria (Porphyromonas gingivalis) are killed over many consecutive waves of attacks over 7 days. In contrast, eukaryote cell associations, upon contact with the insect membrane, lead to a formation of integrated cell sheets (e.g., among human stem cells (SHED-MSC) and human dermal fibroblasts (HDF)). The multifunctional features of the insect membrane provide a potential natural template for man-made applications in which specific control of liquid, solid, and biological contacts is desired and required. Moreover, the planthopper wing cuticle provides a "new" natural surface with which numerous interfacial properties can be explored for a range of comparative studies with both natural and man-made materials.
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Affiliation(s)
- Gregory S Watson
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast , Maroochydore DC, Queensland 4558, Australia
- Department of Oral Biology, Yonsei University College of Dentistry , 250 Seongsanno, Seodaemun-gu, Seoul 120-752, Korea
| | - David W Green
- Department of Oral Biosciences, Faculty of Dentistry, University of Hong Kong, The Prince Philip Dental Hospital , 34 Hospital Road, Sai Ying Pun, Hong Kong SAR, China
| | - Bronwen W Cribb
- Centre for Microscopy & Microanalysis and School of Integrative Biology, The University of Queensland , Saint Lucia, Queensland 4072, Australia
| | - Christopher L Brown
- Queensland Micro & Nanotechnology Center, Griffith University , Brisbane, Queensland 4111, Australia
| | - Christopher R Meritt
- Queensland Micro & Nanotechnology Center, Griffith University , Brisbane, Queensland 4111, Australia
| | - Mark J Tobin
- Infrared Microspectroscopy beamline, Australian Synchrotron , 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Jitraporn Vongsvivut
- Infrared Microspectroscopy beamline, Australian Synchrotron , 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Mingxia Sun
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences , Beijing 100101, China
| | - Ai-Ping Liang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences , Beijing 100101, China
| | - Jolanta A Watson
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast , Maroochydore DC, Queensland 4558, Australia
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Summers KL, Fimognari N, Hollings A, Kiernan M, Lam V, Tidy RJ, Paterson D, Tobin MJ, Takechi R, George GN, Pickering IJ, Mamo JC, Harris HH, Hackett MJ. A Multimodal Spectroscopic Imaging Method To Characterize the Metal and Macromolecular Content of Proteinaceous Aggregates (“Amyloid Plaques”). Biochemistry 2017; 56:4107-4116. [DOI: 10.1021/acs.biochem.7b00262] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kelly L. Summers
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Nicholas Fimognari
- School
of Biomedical Sciences, Curtin University, Bentley, Western Australia 6102, Australia
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
| | - Ashley Hollings
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - Mitchell Kiernan
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - Virginie Lam
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Rebecca J. Tidy
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - David Paterson
- Australian Synchrotron, Clayton, Victoria 3068, Australia
| | - Mark J. Tobin
- Australian Synchrotron, Clayton, Victoria 3068, Australia
| | - Ryu Takechi
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Graham N. George
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Ingrid J. Pickering
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - John C. Mamo
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Hugh H. Harris
- Department
of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Mark J. Hackett
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
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Denbigh JL, Perez-Guaita D, Vernooij RR, Tobin MJ, Bambery KR, Xu Y, Southam AD, Khanim FL, Drayson MT, Lockyer NP, Goodacre R, Wood BR. Probing the action of a novel anti-leukaemic drug therapy at the single cell level using modern vibrational spectroscopy techniques. Sci Rep 2017; 7:2649. [PMID: 28572622 PMCID: PMC5453947 DOI: 10.1038/s41598-017-02069-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 02/07/2017] [Indexed: 01/07/2023] Open
Abstract
Acute myeloid leukaemia (AML) is a life threatening cancer for which there is an urgent clinical need for novel therapeutic approaches. A redeployed drug combination of bezafibrate and medroxyprogesterone acetate (BaP) has shown anti-leukaemic activity in vitro and in vivo. Elucidation of the BaP mechanism of action is required in order to understand how to maximise the clinical benefit. Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, Synchrotron radiation FTIR (S-FTIR) and Raman microspectroscopy are powerful complementary techniques which were employed to probe the biochemical composition of two AML cell lines in the presence and absence of BaP. Analysis was performed on single living cells along with dehydrated and fixed cells to provide a large and detailed data set. A consideration of the main spectral differences in conjunction with multivariate statistical analysis reveals a significant change to the cellular lipid composition with drug treatment; furthermore, this response is not caused by cell apoptosis. No change to the DNA of either cell line was observed suggesting this combination therapy primarily targets lipid biosynthesis or effects bioactive lipids that activate specific signalling pathways.
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Affiliation(s)
- Joanna L Denbigh
- Manchester Institute of Biotechnology and School of Chemistry, University of Manchester, Manchester, M1 7DN, United Kingdom.,Biomedical Research Centre, School of Environment and Life Sciences, University of Salford, Salford, M5 4WT, United Kingdom
| | - David Perez-Guaita
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Robbin R Vernooij
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Mark J Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Keith R Bambery
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia
| | - Yun Xu
- Manchester Institute of Biotechnology and School of Chemistry, University of Manchester, Manchester, M1 7DN, United Kingdom
| | - Andrew D Southam
- School of Biosciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Farhat L Khanim
- School of Biosciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Mark T Drayson
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Nicholas P Lockyer
- Manchester Institute of Biotechnology and School of Chemistry, University of Manchester, Manchester, M1 7DN, United Kingdom
| | - Royston Goodacre
- Manchester Institute of Biotechnology and School of Chemistry, University of Manchester, Manchester, M1 7DN, United Kingdom
| | - Bayden R Wood
- Centre for Biospectroscopy and School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia.
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Vrahnas C, Pearson TA, Brunt AR, Forwood MR, Bambery KR, Tobin MJ, Martin TJ, Sims NA. Anabolic action of parathyroid hormone (PTH) does not compromise bone matrix mineral composition or maturation. Bone 2016; 93:146-154. [PMID: 27686599 DOI: 10.1016/j.bone.2016.09.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/23/2016] [Accepted: 09/25/2016] [Indexed: 02/04/2023]
Abstract
Intermittent administration of parathyroid hormone (PTH) is used to stimulate bone formation in patients with osteoporosis. A reduction in the degree of matrix mineralisation has been reported during treatment, which may reflect either production of undermineralised matrix or a greater proportion of new matrix within the bone samples assessed. To explore these alternatives, high resolution synchrotron-based Fourier Transform Infrared Microspectroscopy (sFTIRM) coupled with calcein labelling was used in a region of non-remodelling cortical bone to determine bone composition during anabolic PTH treatment compared with region-matched samples from controls. 8week old male C57BL/6 mice were treated with vehicle or 50μg/kg PTH, 5 times/week for 4weeks (n=7-9/group). Histomorphometry confirmed greater trabecular and periosteal bone formation and 3-point bending tests confirmed greater femoral strength in PTH-treated mice. Dual calcein labels were used to match bone regions by time-since-mineralisation (bone age) and composition was measured by sFTIRM in six 15μm2 regions at increasing depth perpendicular to the most immature bone on the medial periosteal edge; this allowed in situ measurement of progressive changes in bone matrix during its maturation. The sFTIRM method was validated in vehicle-treated bones where the expected progressive increases in mineral:matrix ratio and collagen crosslink type ratio were detected with increasing bone maturity. We also observed a gradual increase in carbonate content that strongly correlated with an increase in longitudinal stretch of the collagen triple helix (amide I:amide II ratio). PTH treatment did not alter the progressive changes in any of these parameters from the periosteal edge through to the more mature bone. These data provide new information about how the bone matrix matures in situ and confirm that bone deposited during PTH treatment undergoes normal collagen maturation and normal mineral accrual.
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Affiliation(s)
- Christina Vrahnas
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; The University of Melbourne, Department of Medicine at St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Thomas A Pearson
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; The University of Melbourne, Department of Medicine at St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Athena R Brunt
- School of Medical Science, Griffith University, Gold Coast, Queensland, Australia
| | - Mark R Forwood
- School of Medical Science, Griffith University, Gold Coast, Queensland, Australia
| | | | - Mark J Tobin
- Australian Synchrotron, Clayton, Victoria, Australia
| | - T John Martin
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; The University of Melbourne, Department of Medicine at St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Natalie A Sims
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; The University of Melbourne, Department of Medicine at St. Vincent's Hospital, Fitzroy, Victoria, Australia.
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41
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Hackett MJ, Aitken JB, El-Assaad F, McQuillan JA, Carter EA, Ball HJ, Tobin MJ, Paterson D, de Jonge MD, Siegele R, Cohen DD, Vogt S, Grau GE, Hunt NH, Lay PA. Mechanisms of murine cerebral malaria: Multimodal imaging of altered cerebral metabolism and protein oxidation at hemorrhage sites. Sci Adv 2015; 1:e1500911. [PMID: 26824064 PMCID: PMC4730848 DOI: 10.1126/sciadv.1500911] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
Using a multimodal biospectroscopic approach, we settle several long-standing controversies over the molecular mechanisms that lead to brain damage in cerebral malaria, which is a major health concern in developing countries because of high levels of mortality and permanent brain damage. Our results provide the first conclusive evidence that important components of the pathology of cerebral malaria include peroxidative stress and protein oxidation within cerebellar gray matter, which are colocalized with elevated nonheme iron at the site of microhemorrhage. Such information could not be obtained previously from routine imaging methods, such as electron microscopy, fluorescence, and optical microscopy in combination with immunocytochemistry, or from bulk assays, where the level of spatial information is restricted to the minimum size of tissue that can be dissected. We describe the novel combination of chemical probe-free, multimodal imaging to quantify molecular markers of disturbed energy metabolism and peroxidative stress, which were used to provide new insights into understanding the pathogenesis of cerebral malaria. In addition to these mechanistic insights, the approach described acts as a template for the future use of multimodal biospectroscopy for understanding the molecular processes involved in a range of clinically important acute and chronic (neurodegenerative) brain diseases to improve treatment strategies.
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Affiliation(s)
- Mark J. Hackett
- School of Chemistry and Vibrational Spectroscopy Core Facility, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Jade B. Aitken
- School of Chemistry and Vibrational Spectroscopy Core Facility, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Fatima El-Assaad
- Vascular Immunology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - James A. McQuillan
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Elizabeth A. Carter
- School of Chemistry and Vibrational Spectroscopy Core Facility, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Helen J. Ball
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Mark J. Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - David Paterson
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Martin D. de Jonge
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Rainer Siegele
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234, Australia
| | - David D. Cohen
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Lucas Heights, New South Wales 2234, Australia
| | - Stefan Vogt
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Georges E. Grau
- Vascular Immunology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Nicholas H. Hunt
- Molecular Immunopathology Unit, Bosch Institute and School of Medical Sciences, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Peter A. Lay
- School of Chemistry and Vibrational Spectroscopy Core Facility, The University of Sydney, Sydney, New South Wales 2006, Australia
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42
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Chonanant C, Bambery KR, Jearanaikoon N, Chio-Srichan S, Limpaiboon T, Tobin MJ, Heraud P, Jearanaikoon P. Discrimination of micromass-induced chondrocytes from human mesenchymal stem cells by focal plane array-Fourier transform infrared microspectroscopy. Talanta 2014; 130:39-48. [DOI: 10.1016/j.talanta.2014.05.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/19/2014] [Accepted: 05/20/2014] [Indexed: 12/20/2022]
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43
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Kaur M, Healy J, Vasudevamurthy M, Lassé M, Puskar L, Tobin MJ, Valery C, Gerrard JA, Sasso L. Stability and cytotoxicity of crystallin amyloid nanofibrils. Nanoscale 2014; 6:13169-78. [PMID: 25255060 DOI: 10.1039/c4nr04624b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Previous work has identified crystallin proteins extracted from fish eye lenses as a cheap and readily available source for the self-assembly of amyloid nanofibrils. However, before exploring potential applications, the biophysical aspects and safety of this bionanomaterial need to be assessed so as to ensure that it can be effectively and safely used. In this study, crude crystallin amyloid fibrils are shown to be stable across a wide pH range, in a number of industrially relevant solvents, at both low and high temperatures, and in the presence of proteases. Crystallin nanofibrils were compared to well characterised insulin and whey protein fibrils using Thioflavin T assays and TEM imaging. Cell cytotoxicity assays suggest no adverse impact of both mature and fragmented crystallin fibrils on cell viability of Hec-1a endometrial cells. An IR microspectroscopy study supports long-term structural integrity of crystallin nanofibrils.
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Affiliation(s)
- Manmeet Kaur
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch 8140, New Zealand.
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44
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Cao J, Ng ES, McNaughton D, Stanley EG, Elefanty AG, Tobin MJ, Heraud P. Fourier transform infrared microspectroscopy reveals unique phenotypes for human embryonic and induced pluripotent stem cell lines and their progeny. J Biophotonics 2014; 7:767-781. [PMID: 23616434 DOI: 10.1002/jbio.201200217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 03/24/2013] [Accepted: 03/25/2013] [Indexed: 06/02/2023]
Abstract
Fourier transform infrared (FTIR) microspectroscopy was employed to elucidate the macromolecular phenotype of human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSCs) and their differentiated progeny. Undifferentiated hESCs and hiPSC lines were found to be not clearly distinguishable from each other. However, although both hESC and hiPSC variants appeared to undergo similar changes during differentiation in terms of cell surface antigens, the derived cell types from all cell lines could be discriminated using FTIR spectroscopy. We foresee a possible future role for FTIR microspectroscopy as a powerful and objective investigative and quality control tool in regenerative medicine.
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Affiliation(s)
- Julie Cao
- Monash Immunology and Stem Cell Laboratories, Monash University, Building 75, STRIP 1, West Ring Road, Clayton, Victoria 3800, Australia; Centre for Biospectroscopy and the School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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45
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Muscat D, Tobin MJ, Guo Q, Adhikari B. Understanding the distribution of natural wax in starch–wax films using synchrotron-based FTIR (S-FTIR). Carbohydr Polym 2014; 102:125-35. [DOI: 10.1016/j.carbpol.2013.11.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 10/10/2013] [Accepted: 11/02/2013] [Indexed: 11/25/2022]
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46
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Lipiec E, Bambery KR, Heraud P, Kwiatek WM, McNaughton D, Tobin MJ, Vogel C, Wood BR. Monitoring UVR induced damage in single cells and isolated nuclei using SR-FTIR microspectroscopy and 3D confocal Raman imaging. Analyst 2014; 139:4200-9. [DOI: 10.1039/c4an00838c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Melanocytes exposed to artificial sunlight and analysed with FTIR and Raman spectroscopy show changes in DNA bands and evidence of lipid accumulation.
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Affiliation(s)
- Ewelina Lipiec
- The Henryk Niewodniczanski Institute of Nuclear Physics, PAN
- 31-342 Kraków, Poland
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
| | | | - Philip Heraud
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
- Department of Anatomy and Developmental Biology
| | - Wojciech M. Kwiatek
- The Henryk Niewodniczanski Institute of Nuclear Physics, PAN
- 31-342 Kraków, Poland
| | - Don McNaughton
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
| | | | - Christian Vogel
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
- BAM Federal Institute for Materials Research and Testing
| | - Bayden R. Wood
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
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47
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Cao J, Ng ES, McNaughton D, Stanley EG, Elefanty AG, Tobin MJ, Heraud P. The characterisation of pluripotent and multipotent stem cells using Fourier transform infrared microspectroscopy. Int J Mol Sci 2013; 14:17453-76. [PMID: 24065090 PMCID: PMC3794735 DOI: 10.3390/ijms140917453] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/22/2013] [Accepted: 07/22/2013] [Indexed: 01/08/2023] Open
Abstract
Fourier transform infrared (FTIR) microspectroscopy shows potential as a benign, objective and rapid tool to screen pluripotent and multipotent stem cells for clinical use. It offers a new experimental approach that provides a holistic measurement of macromolecular composition such that a signature representing the internal cellular phenotype is obtained. The use of this technique therefore contributes information that is complementary to that acquired by conventional genetic and immunohistochemical methods.
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Affiliation(s)
- Julie Cao
- Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; E-Mails: (J.C.); (E.S.N.); (E.G.S.); (A.G.E.)
- Centre for Biospectroscopy and the School of Chemistry, Monash University, Clayton, Victoria 3800, Australia; E-Mail:
| | - Elizabeth S. Ng
- Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; E-Mails: (J.C.); (E.S.N.); (E.G.S.); (A.G.E.)
- Murdoch Childrens Research Institute, the Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Donald McNaughton
- Centre for Biospectroscopy and the School of Chemistry, Monash University, Clayton, Victoria 3800, Australia; E-Mail:
| | - Edouard G. Stanley
- Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; E-Mails: (J.C.); (E.S.N.); (E.G.S.); (A.G.E.)
- Murdoch Childrens Research Institute, the Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Andrew G. Elefanty
- Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; E-Mails: (J.C.); (E.S.N.); (E.G.S.); (A.G.E.)
- Murdoch Childrens Research Institute, the Royal Children’s Hospital, Parkville, Victoria 3052, Australia
| | - Mark J. Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia; E-Mail:
| | - Philip Heraud
- Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; E-Mails: (J.C.); (E.S.N.); (E.G.S.); (A.G.E.)
- Centre for Biospectroscopy and the School of Chemistry, Monash University, Clayton, Victoria 3800, Australia; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +61-3-9905-0765; Fax: +61-3-9905-5613
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48
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Ivanova EP, Nguyen SH, Webb HK, Hasan J, Truong VK, Lamb RN, Duan X, Tobin MJ, Mahon PJ, Crawford RJ. Molecular organization of the nanoscale surface structures of the dragonfly Hemianax papuensis wing epicuticle. PLoS One 2013; 8:e67893. [PMID: 23874463 PMCID: PMC3706462 DOI: 10.1371/journal.pone.0067893] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 05/22/2013] [Indexed: 11/19/2022] Open
Abstract
The molecular organization of the epicuticle (the outermost layer) of insect wings is vital in the formation of the nanoscale surface patterns that are responsible for bestowing remarkable functional properties. Using a combination of spectroscopic and chromatographic techniques, including Synchrotron-sourced Fourier-transform infrared microspectroscopy (FTIR), x-ray photoelectron spectroscopy (XPS) depth profiling and gas chromatography-mass spectrometry (GCMS), we have identified the chemical components that constitute the nanoscale structures on the surface of the wings of the dragonfly, Hemianax papuensis. The major components were identified to be fatty acids, predominantly hexadecanoic acid and octadecanoic acid, and n-alkanes with even numbered carbon chains ranging from C14 to C30. The data obtained from XPS depth profiling, in conjunction with that obtained from GCMS analyses, enabled the location of particular classes of compounds to different regions within the epicuticle. Hexadecanoic acid was found to be a major component of the outer region of the epicuticle, which forms the surface nanostructures, and was also detected in deeper layers along with octadecanoic acid. Aliphatic compounds were detected throughout the epicuticle, and these appeared to form a third discrete layer that was separate from both the inner and outer epicuticles, which has never previously been reported.
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Affiliation(s)
- Elena P Ivanova
- Faculty of Life and Social Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia.
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Tobin MJ. Hypercapnia: keeping therapy and diagnosis distinct. Anaesth Intensive Care 2013; 41:149-50. [PMID: 23577370 DOI: 10.1177/0310057x1304100202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nguyen SHT, Webb HK, Hasan J, Tobin MJ, Crawford RJ, Ivanova EP. Dual role of outer epicuticular lipids in determining the wettability of dragonfly wings. Colloids Surf B Biointerfaces 2013; 106:126-34. [DOI: 10.1016/j.colsurfb.2013.01.042] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 01/21/2013] [Accepted: 01/21/2013] [Indexed: 01/16/2023]
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