1
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Stanca SE, Mogavero S, Fritzsche W, Krafft C, Hube B, Popp J. Isotope labeled 3D-Raman confocal imaging and atomic force microscopy study on epithelial cells interacting with the fungus Candida albicans. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2024; 59:102750. [PMID: 38734040 DOI: 10.1016/j.nano.2024.102750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/08/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024]
Abstract
The human pathogenic fungus Candida albicans damages epithelial cells during superficial infections. Here we use three-dimensional-sequential-confocal Raman spectroscopic imaging and atomic force microscopy to investigate the interaction of C. albicans wild type cells, the secreted C. albicans peptide toxin candidalysin and mutant cells lacking candidalysin with epithelial cells. The candidalysin is responsible for epithelial cell damage and exhibits in its deuterated form an identifiable Raman signal in a frequency region distinct from the cellular frequency region. Vibration modes at 2100-2200 cm-1 attributed to carbon‑deuterium bending and at 477 cm-1, attributed to the nitrogen‑deuterium out-of-plane bending, found around the nucleus, can be assigned to deuterated candidalysin. Atomic force microscopy visualized 100 nm deep lesions on the cell and force-distance curves indicate the higher adhesion on pore surrounding after incubation with candidalysin. Candidalysin targets the plasma membrane, but is also found inside of the cytosol of epithelial cells during C. albicans infection.
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Affiliation(s)
- Sarmiza Elena Stanca
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany.
| | - Selene Mogavero
- Leibniz Institute for Natural Product Research and Infection Biology, Hans-Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Wolfgang Fritzsche
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Christoph Krafft
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany.
| | - Bernhard Hube
- Leibniz Institute for Natural Product Research and Infection Biology, Hans-Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany; Institute of Microbiology, Faculty of Biological Sciences, Friedrich Schiller University, Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany; Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany.
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2
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Frempong SB, Salbreiter M, Mostafapour S, Pistiki A, Bocklitz TW, Rösch P, Popp J. Illuminating the Tiny World: A Navigation Guide for Proper Raman Studies on Microorganisms. Molecules 2024; 29:1077. [PMID: 38474589 DOI: 10.3390/molecules29051077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/13/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024] Open
Abstract
Raman spectroscopy is an emerging method for the identification of bacteria. Nevertheless, a lot of different parameters need to be considered to establish a reliable database capable of identifying real-world samples such as medical or environmental probes. In this review, the establishment of such reliable databases with the proper design in microbiological Raman studies is demonstrated, shining a light into all the parts that require attention. Aspects such as the strain selection, sample preparation and isolation requirements, the phenotypic influence, measurement strategies, as well as the statistical approaches for discrimination of bacteria, are presented. Furthermore, the influence of these aspects on spectra quality, result accuracy, and read-out are discussed. The aim of this review is to serve as a guide for the design of microbiological Raman studies that can support the establishment of this method in different fields.
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Affiliation(s)
- Sandra Baaba Frempong
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Research Campus Jena, Center of Applied Research, Philosophenweg 7, 07743 Jena, Germany
| | - Markus Salbreiter
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Research Campus Jena, Center of Applied Research, Philosophenweg 7, 07743 Jena, Germany
| | - Sara Mostafapour
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
| | - Aikaterini Pistiki
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Research Campus Jena, Center of Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz-Institute of Photonic Technology, Member of the Leibniz Research Alliance-Leibniz Health Technologies, Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Thomas W Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- Leibniz-Institute of Photonic Technology, Member of the Leibniz Research Alliance-Leibniz Health Technologies, Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Petra Rösch
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Research Campus Jena, Center of Applied Research, Philosophenweg 7, 07743 Jena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Research Campus Jena, Center of Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz-Institute of Photonic Technology, Member of the Leibniz Research Alliance-Leibniz Health Technologies, Albert-Einstein-Str. 9, 07745 Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, 07743 Jena, Germany
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3
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Vibrational spectroscopy for decoding cancer microbiota interactions: Current evidence and future perspective. Semin Cancer Biol 2022; 86:743-752. [PMID: 34273519 DOI: 10.1016/j.semcancer.2021.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 01/27/2023]
Abstract
The role of human microbiota in cancer initiation and progression is recognized in recent years. In order to investigate the interactions between cancer cells and microbes, a systematic analysis using various emerging techniques is required. Owing to the label-free, non-invasive and molecular fingerprinting characteristics, vibrational spectroscopy is uniquely suited to decode and understand the relationship and interactions between cancer and the microbiota at the molecular level. In this review, we first provide a quick overview of the fundamentals of vibrational spectroscopic techniques, namely Raman and infrared spectroscopy. Next, we discuss the emerging evidence underscoring utilities of these spectroscopic techniques to study cancer or microbes separately, and share our perspective on how vibrational spectroscopy can be employed at the intersection of the two fields. Finally, we envision the potential opportunities in exploiting vibrational spectroscopy not only in basic cancer-microbiome research but also in its clinical translation, and discuss the challenges in the bench to bedside translation.
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4
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Kumar S, Gopinathan R, Chandra GK, Umapathy S, Saini DK. Rapid detection of bacterial infection and viability assessment with high specificity and sensitivity using Raman microspectroscopy. Anal Bioanal Chem 2020; 412:2505-2516. [PMID: 32072214 DOI: 10.1007/s00216-020-02474-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/05/2020] [Accepted: 01/30/2020] [Indexed: 01/15/2023]
Abstract
Infectious diseases caused by bacteria still pose major diagnostic challenges in spite of the availability of various molecular approaches. Irrespective of the type of infection, rapid identification of the causative pathogen with a high degree of sensitivity and specificity is essential for initiating appropriate treatment. While existing methods like PCR possess high sensitivity, they are incapable of identifying the viability status of the pathogen and those which can, like culturing, are inherently slow. To overcome these limitations, we developed a diagnostic platform based on Raman microspectroscopy, capable of detecting biochemical signatures from a single bacterium for identification as well as viability assessment. The study also establishes a decontamination protocol for handling live pathogenic bacteria which does not affect identification and viability testing, showing applicability in the analysis of sputum samples containing pathogenic mycobacterial strains. The minimal sample processing along with multivariate analysis of spectroscopic signatures provides an interface for automatic classification, allowing the prediction of unknown samples by mapping signatures onto available datasets. Also, the novelty of the current work is the demonstration of simultaneous identification and viability assessment at a single bacterial level for pathogenic bacteria. Graphical abstract.
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Affiliation(s)
- Srividya Kumar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Renu Gopinathan
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Goutam Kumar Chandra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India.,Department of Physics, NIT Calicut, Calicut, Kerala, 673601, India
| | - Siva Umapathy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India. .,Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, 560012, India.
| | - Deepak Kumar Saini
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India. .,Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India. .,Centre for Infectious Diseases Research, Indian Institute of Science, Bangalore, 560012, India.
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5
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Dong P, Mohammad H, Hui J, Leanse LG, Li J, Liang L, Dai T, Seleem MN, Cheng J. Photolysis of Staphyloxanthin in Methicillin-Resistant Staphylococcus aureus Potentiates Killing by Reactive Oxygen Species. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900030. [PMID: 31179216 PMCID: PMC6548961 DOI: 10.1002/advs.201900030] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Indexed: 05/02/2023]
Abstract
Confronted with the severe situation that the pace of resistance acquisition is faster than the clinical introduction of new antibiotics, health organizations are calling for effective approaches to combat methicillin-resistant Staphylococcus aureus (MRSA) infections. Here, an approach to treat MRSA through photolysis of staphyloxanthin, an antioxidant residing in the microdomain of S. aureus membrane, is reported. This photochemistry process is uncovered through transient absorption imaging and quantitated by absorption spectroscopy, Raman spectroscopy, and mass spectrometry. Photolysis of staphyloxanthin transiently elevates the membrane permeability and renders MRSA highly susceptible to hydrogen peroxide attack. Consequently, staphyloxanthin photolysis by low-level 460 nm light eradicates MRSA synergistically with hydrogen peroxide and other reactive oxygen species. The effectiveness of this synergistic therapy is well validated in MRSA planktonic culture, MRSA-infected macrophage cells, stationary-phase MRSA, persisters, S. aureus biofilms, and two mice wound infection models. Collectively, the work demonstrates that staphyloxanthin photolysis is a new therapeutic platform to treat MRSA infections.
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Affiliation(s)
- Pu‐Ting Dong
- Department of ChemistryBoston UniversityBostonMA02215USA
| | - Haroon Mohammad
- Department of Comparative PathobiologyCollege of Veterinary MedicinePurdue UniversityWest LafayetteIN47907USA
| | - Jie Hui
- Prof. J.‐X. Cheng, Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
| | - Leon G. Leanse
- Wellman Center for PhotomedicineMassachusetts General HospitalHarvard Medical SchoolMA02114USA
| | - Junjie Li
- Prof. J.‐X. Cheng, Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
| | - Lijia Liang
- State Key Laboratory of Supramolecular Structure and MaterialsInstitute of Theoretical ChemistryJilin UniversityChangchun130012China
| | - Tianhong Dai
- Wellman Center for PhotomedicineMassachusetts General HospitalHarvard Medical SchoolMA02114USA
| | - Mohamed N. Seleem
- Department of Comparative PathobiologyCollege of Veterinary MedicinePurdue UniversityWest LafayetteIN47907USA
| | - Ji‐Xin Cheng
- Department of ChemistryBoston UniversityBostonMA02215USA
- Prof. J.‐X. Cheng, Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
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6
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Puchkov EO. Quantitative Methods for Single-Cell Analysis of Microorganisms. Microbiology (Reading) 2019. [DOI: 10.1134/s0026261719010120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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7
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Neumann AC, Bauer D, Hoelscher M, Haisch C, Wieser A. Identifying Dormant Growth State of Mycobacteria by Orthogonal Analytical Approaches on a Single Cell and Ensemble Basis. Anal Chem 2018; 91:881-887. [DOI: 10.1021/acs.analchem.8b03646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- A.-C. Neumann
- German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany
| | - D. Bauer
- Chair of Analytical Chemistry and Water Chemistry, Technical University of Munich, Munich, Germany
| | - M. Hoelscher
- German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany
| | - C. Haisch
- Chair of Analytical Chemistry and Water Chemistry, Technical University of Munich, Munich, Germany
| | - A. Wieser
- German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany
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8
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Tauber JP, Matthäus C, Lenz C, Hoffmeister D, Popp J. Analysis of basidiomycete pigments in situ by Raman spectroscopy. JOURNAL OF BIOPHOTONICS 2018; 11:e201700369. [PMID: 29411940 DOI: 10.1002/jbio.201700369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 02/02/2018] [Indexed: 06/08/2023]
Abstract
Basidiomycetes, that is, mushroom-type fungi, are known to produce pigments in response to environmental impacts. As antioxidants with a high level of unsaturation, these compounds can neutralize highly oxidative species. In the event of close contact with other microbes, the enzymatically controlled pigment production is triggered and pigment secretion is generated at the interaction zone. The identification and analysis of these pigments is important to understand the defense mechanism of fungi, which is essential to counteract an uncontrolled spread of harmful species. Usually, a detailed analysis of the pigments is time consuming as it depends on laborious sample preparation and isolation procedures. Furthermore, the applied protocols often influence the chemical integrity of the compound of interest. A possibility to noninvasively investigate the pigmentation is Raman microspectroscopy. The methodology has the potential to analyze the chemical composition of the sample spatially resolved at the interaction zone. After the acquisition of a representative spectroscopic library, the pigment production by basidiomycetes was monitored for during response to different fungi and bacteria. The presented results describe a very efficient noninvasive way of pigment analysis which can be applied with minimal sample preparation.
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Affiliation(s)
- James P Tauber
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich Schiller University, Jena, Germany
| | - Christian Matthäus
- Spectroscopy/Imaging, Leibniz Institute of Photonic Technology, Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University, Jena, Germany
| | - Claudius Lenz
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich Schiller University, Jena, Germany
| | - Dirk Hoffmeister
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich Schiller University, Jena, Germany
| | - Jürgen Popp
- Spectroscopy/Imaging, Leibniz Institute of Photonic Technology, Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University, Jena, Germany
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9
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Harrison JP, Berry D. Vibrational Spectroscopy for Imaging Single Microbial Cells in Complex Biological Samples. Front Microbiol 2017; 8:675. [PMID: 28450860 PMCID: PMC5390015 DOI: 10.3389/fmicb.2017.00675] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/31/2017] [Indexed: 01/08/2023] Open
Abstract
Vibrational spectroscopy is increasingly used for the rapid and non-destructive imaging of environmental and medical samples. Both Raman and Fourier-transform infrared (FT-IR) imaging have been applied to obtain detailed information on the chemical composition of biological materials, ranging from single microbial cells to tissues. Due to its compatibility with methods such as stable isotope labeling for the monitoring of cellular activities, vibrational spectroscopy also holds considerable power as a tool in microbial ecology. Chemical imaging of undisturbed biological systems (such as live cells in their native habitats) presents unique challenges due to the physical and chemical complexity of the samples, potential for spectral interference, and frequent need for real-time measurements. This Mini Review provides a critical synthesis of recent applications of Raman and FT-IR spectroscopy for characterizing complex biological samples, with a focus on developments in single-cell imaging. We also discuss how new spectroscopic methods could be used to overcome current limitations of single-cell analyses. Given the inherent complementarity of Raman and FT-IR spectroscopic methods, we discuss how combining these approaches could enable us to obtain new insights into biological activities either in situ or under conditions that simulate selected properties of the natural environment.
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Affiliation(s)
- Jesse P Harrison
- Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Research Network "Chemistry Meets Microbiology", University of ViennaVienna, Austria
| | - David Berry
- Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Research Network "Chemistry Meets Microbiology", University of ViennaVienna, Austria
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10
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Stiebing C, Schmölz L, Wallert M, Matthäus C, Lorkowski S, Popp J. Raman imaging of macrophages incubated with triglyceride-enriched oxLDL visualizes translocation of lipids between endocytic vesicles and lipid droplets. J Lipid Res 2017; 58:876-883. [PMID: 28143895 DOI: 10.1194/jlr.m071688] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/15/2017] [Indexed: 01/01/2023] Open
Abstract
Raman spectroscopic imaging was used to investigate the uptake of oxidized LDLs (oxLDLs) by human macrophages. To better understand the endocytic pathway and the intracellular fate of modified lipoproteins is of foremost interest with regard to the development of atherosclerotic plaques. To obtain information on the storage process of lipids caused by oxLDL uptake, Raman spectroscopic imaging was used because of its unique chemical specificity, especially for lipids. For the present study, a protocol was established to incorporate deuterated tripalmitate into oxLDL. Subsequently, human THP-1 macrophages were incubated for different time points and their chemical composition was analyzed using Raman spectroscopic imaging. β-Carotene was found to be a reliable marker molecule for the uptake of lipoproteins into macrophages. In addition, lipoprotein administration led to small endocytic vesicles with different concentrations of deuterated lipids within the cells. For the first time, the translocation of deuterated lipids from endocytic vesicles into lipid droplets over time is reported in mature human THP-1 macrophages.
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Affiliation(s)
- Clara Stiebing
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Lisa Schmölz
- Institute of Nutrition and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany.,Competence Cluster of Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Maria Wallert
- Institute of Nutrition and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany.,Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Christian Matthäus
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Stefan Lorkowski
- Institute of Nutrition and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany.,Competence Cluster of Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany .,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
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11
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Kumar B. N. V, Guo S, Bocklitz T, Rösch P, Popp J. Demonstration of Carbon Catabolite Repression in Naphthalene Degrading Soil Bacteria via Raman Spectroscopy Based Stable Isotope Probing. Anal Chem 2016; 88:7574-82. [DOI: 10.1021/acs.analchem.6b01046] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Vinay Kumar B. N.
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
- InfectoGnostics, Forschungscampus Jena, Philosophenweg
7, D-07743 Jena, Germany
| | - Shuxia Guo
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Thomas Bocklitz
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
- InfectoGnostics, Forschungscampus Jena, Philosophenweg
7, D-07743 Jena, Germany
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
| | - Petra Rösch
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
- InfectoGnostics, Forschungscampus Jena, Philosophenweg
7, D-07743 Jena, Germany
| | - Jürgen Popp
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
- InfectoGnostics, Forschungscampus Jena, Philosophenweg
7, D-07743 Jena, Germany
- Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
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12
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Silge A, Bocklitz T, Ossig R, Schnekenburger J, Rösch P, Popp J. The interaction of an amino-modified ZrO2 nanomaterial with macrophages-an in situ investigation by Raman microspectroscopy. Anal Bioanal Chem 2016; 408:5935-5943. [PMID: 27329500 DOI: 10.1007/s00216-016-9710-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/08/2016] [Accepted: 06/09/2016] [Indexed: 01/18/2023]
Abstract
Metal oxide nanoparticles (NP) are applied in the fields of biomedicine, pharmaceutics, and in consumer products as textiles, cosmetics, paints, or fuels. In this context, the functionalization of the NP surface is a common method to modify and modulate the product performance. A chemical surface modification of NP such as an amino-functionalization can be used to achieve a positively charged and hydrophobic surface. Surface functionalization is known to affect the interaction of nanomaterials (NM) with cellular macromolecules and the responses of tissues or cells, like the uptake of particles by phagocytic cells. Therefore, it is important to assess the possible risk of those modified NP for human health and environment. By applying Raman microspectroscopy, we verified in situ the interaction of amino-modified ZrO2 NP with cultivated macrophages. The results demonstrated strong adhesion properties of the NP to the cell membrane and internalization into the cells. The intracellular localization of the NP was visualized via Raman depth scans of single cells. After the cells were treated with sodium azide (NaN3) and 2-deoxy-glucose to inhibit the phagocytic activity, NP were still detected inside cells to comparable percentages. The observed tendency of amino-modified ZrO2 NP to interact with the cultivated macrophages may influence membrane integrity and cellular functions of alveolar macrophages in the respiratory system. Graphical abstract Detection of ZrO2 NM at subcellular level.
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Affiliation(s)
- Anja Silge
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743, Jena, Germany
| | - Thomas Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743, Jena, Germany
| | - Rainer Ossig
- Biomedical Technology Center, Westfälische Wilhelms-Universität Münster, Mendelstr. 17, 48149, Münster, Germany
| | - Jürgen Schnekenburger
- Biomedical Technology Center, Westfälische Wilhelms-Universität Münster, Mendelstr. 17, 48149, Münster, Germany
| | - Petra Rösch
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743, Jena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743, Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743, Jena, Germany.
- Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07702, Jena, Germany.
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13
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Kumar B N V, Kampe B, Rösch P, Popp J. Characterization of carotenoids in soil bacteria and investigation of their photodegradation by UVA radiation via resonance Raman spectroscopy. Analyst 2016; 140:4584-93. [PMID: 26029748 DOI: 10.1039/c5an00438a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A soil habitat consists of an enormous number of pigmented bacteria with the pigments mainly composed of diverse carotenoids. Most of the pigmented bacteria in the top layer of the soil are photoprotected from exposure to huge amounts of UVA radiation on a daily basis by these carotenoids. The photostability of these carotenoids depends heavily on the presence of specific features like a carbonyl group or an ionone ring system on its overall structure. Resonance Raman spectroscopy is one of the most sensitive and powerful techniques to detect and characterize these carotenoids and also monitor processes associated with them in their native system at a single cell resolution. However, most of the resonance Raman profiles of carotenoids have very minute differences, thereby making it extremely difficult to confirm if these differences are attributed to the presence of different carotenoids or if it is a consequence of their interaction with other cellular components. In this study, we devised a method to overcome this problem by monitoring also the photodegradation of the carotenoids in question by UVA radiation wherein a differential photodegradation response will confirm the presence of different carotenoids irrespective of the proximities in their resonance Raman profiles. Using this method, the detection and characterization of carotenoids in pure cultures of five species of pigmented coccoid soil bacteria is achieved. We also shed light on the influence of the structure of the carotenoid on its photodegradation which can be exploited for use in the characterization of carotenoids via resonance Raman spectroscopy.
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Affiliation(s)
- Vinay Kumar B N
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University of Jena, Helmholtzweg 4, D-07743 Jena, Germany.
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Neugebauer U, Rösch P, Popp J. Raman spectroscopy towards clinical application: drug monitoring and pathogen identification. Int J Antimicrob Agents 2015; 46 Suppl 1:S35-9. [PMID: 26612228 DOI: 10.1016/j.ijantimicag.2015.10.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Raman spectroscopy is a label-free method that measures quickly and contactlessly, providing detailed information from the sample, and has proved to be an ideal tool for medical and life science research. In this review, recent advances of the technique towards drug monitoring and pathogen identification by the Jena Research Groups are reviewed. Surface-enhanced Raman spectroscopy (SERS) and ultraviolet resonance Raman spectroscopy in hollow-core optical fibres enable the detection of drugs at low concentrations as shown for the metabolites of the immunosuppressive drug 6-mercaptopurine as well as antimalarial agents. Furthermore, Raman spectroscopy can be used to characterise pathogenic bacteria in infectious diseases directly from body fluids, making time-consuming cultivation processes dispensable. Using the example of urinary tract infection, it is shown how bacteria can be identified from patients' urine samples within <1 h. The methods cover both single-cell analysis and dielectrophoretic capturing of bacteria in suspension. The latter method could also be used for fast (<3.5 h) identification of antibiotic resistance as shown exemplarily for vancomycin-resistant enterococci.
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Affiliation(s)
- Ute Neugebauer
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, D-07747 Jena, Germany; Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany; InfectoGnostics Forschungscampus Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Petra Rösch
- InfectoGnostics Forschungscampus Jena, Philosophenweg 7, D-07743 Jena, Germany; Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Jürgen Popp
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, D-07747 Jena, Germany; Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany; InfectoGnostics Forschungscampus Jena, Philosophenweg 7, D-07743 Jena, Germany; Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, D-07743 Jena, Germany.
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Stöckel S, Stanca AS, Helbig J, Rösch P, Popp J. Raman spectroscopic monitoring of the growth of pigmented and non-pigmented mycobacteria. Anal Bioanal Chem 2015; 407:8919-23. [PMID: 26391403 DOI: 10.1007/s00216-015-9031-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/02/2015] [Accepted: 09/04/2015] [Indexed: 11/24/2022]
Abstract
Raman microspectroscopy has increased in popularity in the field of microbiology because it allows a spectral fingerprinting of bacterial pathogens at an unrivaled speed, which is important for the early treatment of infectious diseases such as tuberculosis. An indispensable prerequisite for the success of this method is a profound knowledge, how the spectral profiles depend on the age of the bacteria. We therefore followed the growth of two rapidly growing Mycobacterium tuberculosis relatives, the pigmented Mycobacterium aurum, and the non-pigmented Mycobacterium smegmatis, by means of Raman microspectroscopy. Both species showed remarkable temporal changes in the single-bacteria Raman spectra: In the signatures of M. aurum, pigment-associated Raman signals could be detected not until 72 h of growth and also remained highly variable thereafter. The Raman spectra of M. smegmatis exhibited lipid signals presumably arising from mycolic acids, which are a hallmark feature of mycobacteria, but only after the bacteria reached the late stationary growth phase (>48 h). A principal component analysis thus classified the Raman spectra according to the cultivation age. In summary, these findings have to be reckoned with in future studies dealing with the identification of mycobacteria via Raman microspectroscopy. Graphical abstract Changes in the chemical composition of bacterial cells over growth time may influence the results of Raman spectroscopic studies of bacteria.
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Affiliation(s)
- Stephan Stöckel
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.,InfectoGnostics Forschungscampus Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Andrei Sebastian Stanca
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Jonathan Helbig
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Petra Rösch
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany. .,InfectoGnostics Forschungscampus Jena, Philosophenweg 7, 07743, Jena, Germany.
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe School of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.,InfectoGnostics Forschungscampus Jena, Philosophenweg 7, 07743, Jena, Germany.,Leibniz-Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
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