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Baden N, Watanabe H, Aoyagi M, Ujii H, Fujita Y. Surface-enhanced optical-mid-infrared photothermal microscopy using shortened colloidal silver nanowires: a noble approach for mid-infrared surface sensing. NANOSCALE HORIZONS 2024; 9:1311-1317. [PMID: 38808389 DOI: 10.1039/d4nh00106k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
We propose surface-enhanced optical-mid-infrared photothermal (MIP) microscopy using highly crystalline silver nanowires, acting as a Fabry-Perot resonator, and demonstrate its applicability to enhanced mid-infrared surface sensing of thin polymer layers as thin as 20 nm.
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Affiliation(s)
- Naoki Baden
- Nihon Thermal Consulting, Co., Ltd, 3-9-2 Nishishinjuku, Sinjuku-ku, Tokyo 160-0023, Japan
| | - Hirohmi Watanabe
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Kagamiyama 3-11-32, Higashihiroshima, Hiroshima, 739-0046, Japan.
| | - Masaru Aoyagi
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Kagamiyama 3-11-32, Higashihiroshima, Hiroshima, 739-0046, Japan.
| | - Hiroshi Ujii
- Research Institute for Electronic Science (RIES) and Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N20W10, Sapporo, Hokkaido 001-0020, Japan
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Institute for Integrated Cell-Material Science (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yasuhiko Fujita
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Kagamiyama 3-11-32, Higashihiroshima, Hiroshima, 739-0046, Japan.
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2
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Al Jedani S, Lima C, Smith CI, Gunning PJ, Shaw RJ, Barrett SD, Triantafyllou A, Risk JM, Goodacre R, Weightman P. An optical photothermal infrared investigation of lymph nodal metastases of oral squamous cell carcinoma. Sci Rep 2024; 14:16050. [PMID: 38992088 PMCID: PMC11239877 DOI: 10.1038/s41598-024-66977-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 07/05/2024] [Indexed: 07/13/2024] Open
Abstract
In this study, optical photothermal infrared (O-PTIR) spectroscopy combined with machine learning algorithms were used to evaluate 46 tissue cores of surgically resected cervical lymph nodes, some of which harboured oral squamous cell carcinoma nodal metastasis. The ratios obtained between O-PTIR chemical images at 1252 cm-1 and 1285 cm-1 were able to reveal morphological details from tissue samples that are comparable to the information achieved by a pathologist's interpretation of optical microscopy of haematoxylin and eosin (H&E) stained samples. Additionally, when used as input data for a hybrid convolutional neural network (CNN) and random forest (RF) analyses, these yielded sensitivities, specificities and precision of 98.6 ± 0.3%, 92 ± 4% and 94 ± 5%, respectively, and an area under receiver operator characteristic (AUC) of 94 ± 2%. Our findings show the potential of O-PTIR technology as a tool to study cancer on tissue samples.
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Affiliation(s)
- Safaa Al Jedani
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
- Department of Physics, University of Jeddah, Jeddah, Saudi Arabia
| | - Cassio Lima
- Centre for Metabolomics Research, Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Caroline I Smith
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
| | - Philip J Gunning
- Department of Molecular and Clinical Cancer Medicine, Liverpool Head and Neck Centre, University of Liverpool, Liverpool, L7 8TX, UK
| | - Richard J Shaw
- Department of Molecular and Clinical Cancer Medicine, Liverpool Head and Neck Centre, University of Liverpool, Liverpool, L7 8TX, UK
- Head and Neck Surgery, Liverpool University Foundation NHS Trust, Aintree Hospital, Liverpool, L9 7AL, UK
| | - Steve D Barrett
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
| | - Asterios Triantafyllou
- Department of Cellular Pathology, Liverpool Clinical Laboratories, University of Liverpool, Liverpool, L7 8YE, UK
| | - Janet M Risk
- Department of Molecular and Clinical Cancer Medicine, Liverpool Head and Neck Centre, University of Liverpool, Liverpool, L7 8TX, UK
| | - Royston Goodacre
- Centre for Metabolomics Research, Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Peter Weightman
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK.
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3
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Iyer RR, Applegate CC, Arogundade OH, Bangru S, Berg IC, Emon B, Porras-Gomez M, Hsieh PH, Jeong Y, Kim Y, Knox HJ, Moghaddam AO, Renteria CA, Richard C, Santaliz-Casiano A, Sengupta S, Wang J, Zambuto SG, Zeballos MA, Pool M, Bhargava R, Gaskins HR. Inspiring a convergent engineering approach to measure and model the tissue microenvironment. Heliyon 2024; 10:e32546. [PMID: 38975228 PMCID: PMC11226808 DOI: 10.1016/j.heliyon.2024.e32546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/22/2024] [Accepted: 06/05/2024] [Indexed: 07/09/2024] Open
Abstract
Understanding the molecular and physical complexity of the tissue microenvironment (TiME) in the context of its spatiotemporal organization has remained an enduring challenge. Recent advances in engineering and data science are now promising the ability to study the structure, functions, and dynamics of the TiME in unprecedented detail; however, many advances still occur in silos that rarely integrate information to study the TiME in its full detail. This review provides an integrative overview of the engineering principles underlying chemical, optical, electrical, mechanical, and computational science to probe, sense, model, and fabricate the TiME. In individual sections, we first summarize the underlying principles, capabilities, and scope of emerging technologies, the breakthrough discoveries enabled by each technology and recent, promising innovations. We provide perspectives on the potential of these advances in answering critical questions about the TiME and its role in various disease and developmental processes. Finally, we present an integrative view that appreciates the major scientific and educational aspects in the study of the TiME.
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Affiliation(s)
- Rishyashring R. Iyer
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Catherine C. Applegate
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Opeyemi H. Arogundade
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sushant Bangru
- Department of Biochemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Ian C. Berg
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Bashar Emon
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Marilyn Porras-Gomez
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Pei-Hsuan Hsieh
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yoon Jeong
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yongdeok Kim
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Hailey J. Knox
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Amir Ostadi Moghaddam
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Carlos A. Renteria
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Craig Richard
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Ashlie Santaliz-Casiano
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sourya Sengupta
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jason Wang
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Samantha G. Zambuto
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Maria A. Zeballos
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Marcia Pool
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Rohit Bhargava
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemical and Biochemical Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- NIH/NIBIB P41 Center for Label-free Imaging and Multiscale Biophotonics (CLIMB), University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - H. Rex Gaskins
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Biomedical and Translational Sciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
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4
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Wang L, Lin H, Zhu Y, Ge X, Li M, Liu J, Chen F, Zhang M, Cheng JX. Overtone photothermal microscopy for high-resolution and high-sensitivity vibrational imaging. Nat Commun 2024; 15:5374. [PMID: 38918400 PMCID: PMC11199576 DOI: 10.1038/s41467-024-49691-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 06/11/2024] [Indexed: 06/27/2024] Open
Abstract
Photothermal microscopy is a highly sensitive pump-probe method for mapping nanostructures and molecules through the detection of local thermal gradients. While visible photothermal microscopy and mid-infrared photothermal microscopy techniques have been developed, they possess inherent limitations. These techniques either lack chemical specificity or encounter significant light attenuation caused by water absorption. Here, we present an overtone photothermal (OPT) microscopy technique that offers high chemical specificity, detection sensitivity, and spatial resolution by employing a visible probe for local heat detection in the C-H overtone region. We demonstrate its capability for high-fidelity chemical imaging of polymer nanostructures, depth-resolved intracellular chemical mapping of cancer cells, and imaging of multicellular C. elegans organisms and highly scattering brain tissues. By bridging the gap between visible and mid-infrared photothermal microscopy, OPT establishes a new modality for high-resolution and high-sensitivity chemical imaging. This advancement complements large-scale shortwave infrared imaging approaches, facilitating multiscale structural and chemical investigations of materials and biological metabolism.
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Affiliation(s)
- Le Wang
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Haonan Lin
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Yifan Zhu
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Xiaowei Ge
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Mingsheng Li
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Jianing Liu
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Fukai Chen
- Department of Biology, Boston University, Boston, MA, 02215, USA
| | - Meng Zhang
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Chemistry, Boston University, Boston, MA, 02215, USA.
- Department of Biology, Boston University, Boston, MA, 02215, USA.
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5
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Guo Z, Chiesa G, Yin J, Sanford A, Meier S, Khalil AS, Cheng JX. Structural Mapping of Protein Aggregates in Live Cells Modeling Huntington's Disease. Angew Chem Int Ed Engl 2024:e202408163. [PMID: 38880765 DOI: 10.1002/anie.202408163] [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: 04/29/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
While protein aggregation is a hallmark of many neurodegenerative diseases, acquiring structural information on protein aggregates inside live cells remains challenging. Traditional microscopy does not provide structural information on protein systems. Routinely used fluorescent protein tags, such as Green Fluorescent Protein (GFP), might perturb native structures. Here, we report a counter-propagating mid-infrared photothermal imaging approach enabling mapping of secondary structure of protein aggregates in live cells modeling Huntington's disease. By comparing mid-infrared photothermal spectra of label-free and GFP-tagged huntingtin inclusions, we demonstrate that GFP fusions indeed perturb the secondary structure of aggregates. By implementing spectra with small spatial step for dissecting spectral features within sub-micrometer distances, we reveal that huntingtin inclusions partition into a β-sheet-rich core and a ɑ-helix-rich shell. We further demonstrate that this structural partition exists only in cells with the [RNQ+] prion state, while [rnq-] cells only carry smaller β-rich non-toxic aggregates. Collectively, our methodology has the potential to unveil detailed structural information on protein assemblies in live cells, enabling high-throughput structural screenings of macromolecular assemblies.
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Affiliation(s)
- Zhongyue Guo
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Giulio Chiesa
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Biological Design Center, Boston University, Boston, MA 02215, USA
| | - Jiaze Yin
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Adam Sanford
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Biological Design Center, Boston University, Boston, MA 02215, USA
| | - Stefan Meier
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Ahmad S Khalil
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Biological Design Center, Boston University, Boston, MA 02215, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02215, USA
| | - Ji-Xin Cheng
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
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6
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Teng X, Li M, He H, Jia D, Yin J, Bolarinho R, Cheng JX. Mid-infrared Photothermal Imaging: Instrument and Life Science Applications. Anal Chem 2024; 96:7895-7906. [PMID: 38702858 DOI: 10.1021/acs.analchem.4c02017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Affiliation(s)
- Xinyan Teng
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Mingsheng Li
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Hongjian He
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Danchen Jia
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Jiaze Yin
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Rylie Bolarinho
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Ji-Xin Cheng
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
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7
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Longhini AP, DuBose A, Lobo S, Vijayan V, Bai Y, Rivera EK, Sala-Jarque J, Nikitina A, Carrettiero DC, Unger MT, Sclafani OR, Fu V, Beckett ER, Vigers M, Buée L, Landrieu I, Shell S, Shea JE, Han S, Kosik KS. Precision proteoform design for 4R tau isoform selective templated aggregation. Proc Natl Acad Sci U S A 2024; 121:e2320456121. [PMID: 38568974 PMCID: PMC11009657 DOI: 10.1073/pnas.2320456121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/29/2024] [Indexed: 04/05/2024] Open
Abstract
Prion-like spread of disease-specific tau conformers is a hallmark of all tauopathies. A 19-residue probe peptide containing a P301L mutation and spanning the R2/R3 splice junction of tau folds and stacks into seeding-competent fibrils and induces aggregation of 4R, but not 3R tau. These tau peptide fibrils propagate aggregated intracellular tau over multiple generations, have a high β-sheet content, a colocalized lipid signal, and adopt a well-defined U-shaped fold found in 4R tauopathy brain-derived fibrils. Fully atomistic replica exchange molecular dynamics (MD) simulations were used to compute the free energy landscapes of the conformational ensemble of the peptide monomers. These identified an aggregation-prohibiting β-hairpin structure and an aggregation-competent U-fold unique to 4R tauopathy fibrils. Guided by MD simulations, we identified that the N-terminal-flanking residues to PHF6, which slightly vary between 4R and 3R isoforms, modulate seeding. Strikingly, when a single amino acid switch at position 305 replaced the serine of 4R tau with a lysine from the corresponding position in the first repeat of 3R tau, the seeding induced by the 19-residue peptide was markedly reduced. Conversely, a 4R tau mimic with three repeats, prepared by replacing those amino acids in the first repeat with those amino acids uniquely present in the second repeat, recovered aggregation when exposed to the 19-residue peptide. These peptide fibrils function as partial prions to recruit naive 4R tau-ten times the length of the peptide-and serve as a critical template for 4R tauopathy propagation. These results hint at opportunities for tau isoform-specific therapeutic interventions.
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Affiliation(s)
- Andrew P. Longhini
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Austin DuBose
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA93106
| | - Samuel Lobo
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA93106
| | - Vishnu Vijayan
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA93106
| | - Yeran Bai
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
- Photothermal Spectroscopy Corp., Santa Barbara, CA93101
| | - Erica Keane Rivera
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Julia Sala-Jarque
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Arina Nikitina
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Daniel C. Carrettiero
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
- Center for Natural and Human Sciences, Federal University of ABC, São Bernardo do Campo, São Paulo09600-000, Brazil
| | - Matthew T. Unger
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Olivia R. Sclafani
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Valerie Fu
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Emily R. Beckett
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
| | - Michael Vigers
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA93106
| | - Luc Buée
- University of Lille, Inserm, CHU Lille, Lille Neuroscience & CognitionLilleF-59000, France
- Laboratoire d'Excellence Development of Innovative Strategies for a Transdisciplinary Approach to Alzheimer's Disease, Alzheimer & Tauopathies Team, LilleF-59000, France
| | - Isabelle Landrieu
- Center National de la Recherche Scientifique Équipe de Recherche 9002–Integrative Structural Biology, LilleF-59000, France
- University of Lille, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1167–Risk Factors and Molecular Determinants of Aging-Related DiseasesLilleF-59000, France
| | - Scott Shell
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA93106
| | - Joan E. Shea
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Physics, University of California Santa Barbara, Santa Barbara, CA93106
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA93106
| | - Kenneth S. Kosik
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, CA93106
- Department of Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, CA93106
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8
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Baghel D, de Oliveira AP, Satyarthy S, Chase WE, Banerjee S, Ghosh A. Structural characterization of amyloid aggregates with spatially resolved infrared spectroscopy. Methods Enzymol 2024; 697:113-150. [PMID: 38816120 PMCID: PMC11147165 DOI: 10.1016/bs.mie.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The self-assembly of proteins and peptides into ordered structures called amyloid fibrils is a hallmark of numerous diseases, impacting the brain, heart, and other organs. The structure of amyloid aggregates is central to their function and thus has been extensively studied. However, the structural heterogeneities between aggregates as they evolve throughout the aggregation pathway are still not well understood. Conventional biophysical spectroscopic methods are bulk techniques and only report on the average structural parameters. Understanding the structure of individual aggregate species in a heterogeneous ensemble necessitates spatial resolution on the length scale of the aggregates. Recent technological advances have led to augmentation of infrared (IR) spectroscopy with imaging modalities, wherein the photothermal response of the sample upon vibrational excitation is leveraged to provide spatial resolution beyond the diffraction limit. These combined approaches are ideally suited to map out the structural heterogeneity of amyloid ensembles. AFM-IR, which integrates IR spectroscopy with atomic force microscopy enables identification of the structural facets the oligomers and fibrils at individual aggregate level with nanoscale resolution. These capabilities can be extended to chemical mapping in diseased tissue specimens with submicron resolution using optical photothermal microscopy, which combines IR spectroscopy with optical imaging. This book chapter provides the basic premise of these novel techniques and provides the typical methodology for using these approaches for amyloid structure determination. Detailed procedures pertaining to sample preparation and data acquisition and analysis are discussed and the aggregation of the amyloid β peptide is provided as a case study to provide the reader the experimental parameters necessary to use these techniques to complement their research efforts.
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Affiliation(s)
- Divya Baghel
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Ana Pacheco de Oliveira
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Saumya Satyarthy
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - William E Chase
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Siddhartha Banerjee
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States
| | - Ayanjeet Ghosh
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, United States.
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9
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Vasista AB, Ciraulo B, Schmidt F, Arroyo JO, Quidant R. Non-steady state thermometry with optical diffraction tomography. SCIENCE ADVANCES 2024; 10:eadk5440. [PMID: 38517963 PMCID: PMC10959403 DOI: 10.1126/sciadv.adk5440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 02/15/2024] [Indexed: 03/24/2024]
Abstract
Label-free thermometry is a pivotal tool for many disciplines. However, most current approaches are only suitable for planar heat sources in steady state, thereby restricting the range of systems that can be reliably studied. Here, we introduce pump probe-based optical diffraction tomography (ODT) as a method to map temperature precisely and accurately in three dimensions (3D) at the single-particle level. To do so, we first systematically characterize the thermal landscape in a model system consisting of gold nanorods in a microchamber and then benchmark the results against simulations and quantitative phase imaging thermometry. We then apply ODT thermometry to resolve thermal landscapes inaccessible to other label-free approaches in the form of nonplanar heat sources embedded in complex environments and freely diffusing gold nanorods in a microchamber. Last, we foresee that our approach will find many applications where routine thermal characterization of heterogeneous nanoparticles samples in 3D or in non-steady state is required.
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Affiliation(s)
- Adarsh B. Vasista
- Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH-Zürich, 8092 Zürich, Switzerland
| | - Bernard Ciraulo
- Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH-Zürich, 8092 Zürich, Switzerland
- Pediatric Molecular Neuro-Oncology Research, University Children’s Hospital Zürich, Balgrist Campus, 8008 Zürich, Switzerland
| | - Falko Schmidt
- Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH-Zürich, 8092 Zürich, Switzerland
| | - Jaime Ortega Arroyo
- Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH-Zürich, 8092 Zürich, Switzerland
| | - Romain Quidant
- Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH-Zürich, 8092 Zürich, Switzerland
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10
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Samolis PD, Sander MY. Increasing contrast in water-embedded particles via time-gated mid-infrared photothermal microscopy. OPTICS LETTERS 2024; 49:1457-1460. [PMID: 38489424 DOI: 10.1364/ol.513742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/06/2024] [Indexed: 03/17/2024]
Abstract
The transient dynamics of photothermal signals provide interesting insights into material properties and heat diffusion. In a mid-infrared (mid-IR) photothermal microscope, the imaging contrast in a standard amplitude imaging can decrease due to thermal diffusion effects. It is shown that contrast varies for poly-methyl 2-methylpropenoate (PMMA) particles of different sizes when embedded in an absorbing medium of water (H2O) based on levels of heat exchange under the water absorption resonance. Using time-resolved boxcar (BC) detection, analysis of the transient thermal dynamics at the bead-water interface is presented, and the time decay parameters for 500 nm and 100 nm beads are determined. Enhanced (negative) imaging contrast is observed for less heat exchange between the water and bead, as in the case for the 100 nm bead. For the 500 nm bead, boxcar imaging before heat exchange starts occurring, leads to an increase of the imaging contrast up to a factor of 1.6.
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11
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Xia Q, Perera HA, Bolarinho R, Piskulich ZA, Guo Z, Yin J, He H, Li M, Ge X, Cui Q, Ramström O, Yan M, Cheng JX. Click-free imaging of carbohydrate trafficking in live cells using an azido photothermal probe. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.08.584185. [PMID: 38559219 PMCID: PMC10979903 DOI: 10.1101/2024.03.08.584185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Real-time tracking of intracellular carbohydrates remains challenging. While click chemistry allows bio-orthogonal tagging with fluorescent probes, the reaction permanently alters the target molecule and only allows a single snapshot. Here, we demonstrate click-free mid-infrared photothermal (MIP) imaging of azide-tagged carbohydrates in live cells. Leveraging the micromolar detection sensitivity for 6-azido-trehalose (TreAz) and the 300-nm spatial resolution of MIP imaging, the trehalose recycling pathway in single mycobacteria, from cytoplasmic uptake to membrane localization, is directly visualized. A peak shift of azide in MIP spectrum further uncovers interactions between TreAz and intracellular protein. MIP mapping of unreacted azide after click reaction reveals click chemistry heterogeneity within a bacterium. Broader applications of azido photothermal probes to visualize the initial steps of the Leloir pathway in yeasts and the newly synthesized glycans in mammalian cells are demonstrated.
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Affiliation(s)
- Qing Xia
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
| | - Harini A. Perera
- Department of Chemistry, University of Massachusetts, Lowell, Massachusetts 01854, United States
| | - Rylie Bolarinho
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Zeke A. Piskulich
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Zhongyue Guo
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Jiaze Yin
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Hongjian He
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Mingsheng Li
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Xiaowei Ge
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Qiang Cui
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Olof Ramström
- Department of Chemistry, University of Massachusetts, Lowell, Massachusetts 01854, United States
- Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts, Lowell, Massachusetts 01854, United States
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
- Photonics Center, Boston University, Boston, Massachusetts 02215, United States
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
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12
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He H, Yin J, Li M, Dessai CVP, Yi M, Teng X, Zhang M, Li Y, Du Z, Xu B, Cheng JX. Mapping enzyme activity in living systems by real-time mid-infrared photothermal imaging of nitrile chameleons. Nat Methods 2024; 21:342-352. [PMID: 38191931 PMCID: PMC11165695 DOI: 10.1038/s41592-023-02137-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 11/17/2023] [Indexed: 01/10/2024]
Abstract
Simultaneous spatial mapping of the activity of multiple enzymes in a living system can elucidate their functions in health and disease. However, methods based on monitoring fluorescent substrates are limited. Here, we report the development of nitrile (C≡N)-tagged enzyme activity reporters, named nitrile chameleons, for the peak shift between substrate and product. To image these reporters in real time, we developed a laser-scanning mid-infrared photothermal imaging system capable of imaging the enzymatic substrates and products at a resolution of 300 nm. We show that when combined, these tools can map the activity distribution of different enzymes and measure their relative catalytic efficiency in living systems such as cancer cells, Caenorhabditis elegans, and brain tissues, and can be used to directly visualize caspase-phosphatase interactions during apoptosis. Our method is generally applicable to a broad category of enzymes and will enable new analyses of enzymes in their native context.
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Affiliation(s)
- Hongjian He
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA
- Photonics Center, Boston University, Boston, MA, USA
| | - Jiaze Yin
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA
- Photonics Center, Boston University, Boston, MA, USA
| | - Mingsheng Li
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA
- Photonics Center, Boston University, Boston, MA, USA
| | - Chinmayee Vallabh Prabhu Dessai
- Photonics Center, Boston University, Boston, MA, USA
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Meihui Yi
- Department of Chemistry, Brandeis University, Waltham, MA, USA
| | - Xinyan Teng
- Photonics Center, Boston University, Boston, MA, USA
- Department of Chemistry, Boston University, Boston, MA, USA
| | - Meng Zhang
- Photonics Center, Boston University, Boston, MA, USA
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Yueming Li
- Photonics Center, Boston University, Boston, MA, USA
- Department of Mechanical Engineering, Boston University, Boston, MA, USA
| | - Zhiyi Du
- Photonics Center, Boston University, Boston, MA, USA
- Department of Chemistry, Boston University, Boston, MA, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, Waltham, MA, USA
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA.
- Photonics Center, Boston University, Boston, MA, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, USA.
- Department of Chemistry, Boston University, Boston, MA, USA.
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13
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de Oliveira AP, Chase W, Confer MP, Walker S, Baghel D, Ghosh A. Colocalization of β-Sheets and Carotenoids in Aβ Plaques Revealed with Multimodal Spatially Resolved Vibrational Spectroscopy. J Phys Chem B 2024; 128:33-44. [PMID: 38124262 PMCID: PMC10851346 DOI: 10.1021/acs.jpcb.3c04782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The aggregation of amyloid β(Aβ) peptides is at the heart of Alzheimer's disease development and progression. As a result, amyloid aggregates have been studied extensively in vitro, and detailed structural information on fibrillar amyloid aggregates is available. However, forwarding these structural models to amyloid plaques in the human brain is still a major challenge. The chemistry of amyloid plaques, particularly in terms of the protein secondary structure and associated chemical moieties, remains poorly understood. In this report, we use Raman microspectroscopy to identify the presence of carotenoids in amyloid plaques and demonstrate that the abundance of carotenoids is correlated with the overall protein secondary structure of plaques, specifically to the population of β-sheets. While the association of carotenoids with plaques has been previously identified, their correlation with the β structure has never been identified. To further validate these findings, we have used optical photothermal infrared (O-PTIR) spectroscopy, which is a spatially resolved technique that yields complementary infrared contrast to Raman. O-PTIR unequivocally demonstrates the presence of elevated β-sheets in carotenoid-containing plaques and the lack of β structure in noncarotenoid plaques. Our findings underscore the potential link between anti-inflammatory species as carotenoids to specific secondary structural motifs within Aβ plaques and highlight the possible role of chemically distinct plaques in neuroinflammation, which can uncover new mechanistic insights and lead to new therapeutic strategies for AD.
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Affiliation(s)
| | - William Chase
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL 35401, USA
| | - Matthew P. Confer
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana Champaign, Urbana, Illinois 61801, USA
| | - Savannah Walker
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL 35401, USA
| | - Divya Baghel
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL 35401, USA
| | - Ayanjeet Ghosh
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, AL 35401, USA
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14
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Bai Y, Camargo CM, Glasauer SMK, Gifford R, Tian X, Longhini AP, Kosik KS. Single-cell mapping of lipid metabolites using an infrared probe in human-derived model systems. Nat Commun 2024; 15:350. [PMID: 38191490 PMCID: PMC10774263 DOI: 10.1038/s41467-023-44675-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 12/20/2023] [Indexed: 01/10/2024] Open
Abstract
Understanding metabolic heterogeneity is the key to uncovering the underlying mechanisms of metabolic-related diseases. Current metabolic imaging studies suffer from limitations including low resolution and specificity, and the model systems utilized often lack human relevance. Here, we present a single-cell metabolic imaging platform to enable direct imaging of lipid metabolism with high specificity in various human-derived 2D and 3D culture systems. Through the incorporation of an azide-tagged infrared probe, selective detection of newly synthesized lipids in cells and tissue became possible, while simultaneous fluorescence imaging enabled cell-type identification in complex tissues. In proof-of-concept experiments, newly synthesized lipids were directly visualized in human-relevant model systems among different cell types, mutation status, differentiation stages, and over time. We identified upregulated lipid metabolism in progranulin-knockdown human induced pluripotent stem cells and in their differentiated microglia cells. Furthermore, we observed that neurons in brain organoids exhibited a significantly lower lipid metabolism compared to astrocytes.
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Affiliation(s)
- Yeran Bai
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.
- Photothermal Spectroscopy Corp., Santa Barbara, CA, USA.
| | - Carolina M Camargo
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Stella M K Glasauer
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Raymond Gifford
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Xinran Tian
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Andrew P Longhini
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Kenneth S Kosik
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.
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15
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Zong H, Yurdakul C, Zhao J, Wang Z, Chen F, Ünlü MS, Cheng JX. Bond-selective full-field optical coherence tomography. OPTICS EXPRESS 2023; 31:41202-41218. [PMID: 38087525 DOI: 10.1364/oe.503861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/10/2023] [Indexed: 12/18/2023]
Abstract
Optical coherence tomography (OCT) is a label-free, non-invasive 3D imaging tool widely used in both biological research and clinical diagnosis. Conventional OCT modalities can only visualize specimen tomography without chemical information. Here, we report a bond-selective full-field OCT (BS-FF-OCT), in which a pulsed mid-infrared laser is used to modulate the OCT signal through the photothermal effect, achieving label-free bond-selective 3D sectioned imaging of highly scattering samples. We first demonstrate BS-FF-OCT imaging of 1 µm PMMA beads embedded in agarose gel. Next, we show 3D hyperspectral imaging of up to 75 µm of polypropylene fiber mattress from a standard surgical mask. We then demonstrate BS-FF-OCT imaging on biological samples, including cancer cell spheroids and C. elegans. Using an alternative pulse timing configuration, we finally demonstrate the capability of BS-FF-OCT on imaging a highly scattering myelinated axons region in a mouse brain tissue slice.
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16
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Longhini AP, DuBose A, Lobo S, Vijayan V, Bai Y, Rivera EK, Sala-Jarque J, Nikitina A, Carrettiero DC, Unger M, Sclafani O, Fu V, Vigers M, Buee L, Landrieu I, Shell S, Shea JE, Han S, Kosik KS. Precision Proteoform Design for 4R Tau Isoform Selective Templated Aggregation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.31.555649. [PMID: 37693456 PMCID: PMC10491155 DOI: 10.1101/2023.08.31.555649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Prion-like spread of disease-specific tau conformers is a hallmark of all tauopathies. A 19-residue probe peptide containing a P301L mutation and spanning the R2/R3 splice junction of tau, folds and stacks into seeding-competent fibrils and induces aggregation of 4R, but not 3R tau. These tau peptide fibrils propagate aggregated intracellular tau over multiple generations, have a high β-sheet content, a colocalized lipid signal, and adopt a well-defined U-shaped fold found in 4R tauopathy brain-derived fibrils. Fully atomistic replica exchange molecular dynamics (MD) simulations were used to compute the free energy landscapes of the conformational ensemble of the peptide monomers. These identified an aggregation-prohibiting β-hairpin structure and an aggregation-competent U-fold unique to 4R tauopathy fibrils. Guided by MD simulations, we identified that the N-terminal-flanking residues to PHF6, which slightly vary between 4R and 3R isoforms, modulate seeding. Strikingly, when a single amino acid switch at position 305 replaced the serine of 4R tau with a lysine from the corresponding position in the first repeat of 3R tau, the seeding induced by the 19-residue peptide was markedly reduced. Conversely, a 4R tau mimic with three repeats, prepared by replacing those amino acids in the first repeat with those amino acids uniquely present in the second repeat, recovered aggregation when exposed to the 19-residue peptide. These peptide fibrils function as partial prions to recruit naïve 4R tau-ten times the length of the peptide-and serve as a critical template for 4R tauopathy propagation. These results hint at opportunities for tau isoform-specific therapeutic interventions.
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Affiliation(s)
- Andrew P. Longhini
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Austin DuBose
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California, USA
| | - Samuel Lobo
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California, USA
| | - Vishnu Vijayan
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California, USA
| | - Yeran Bai
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
- Photothermal Spectroscopy Corp., Santa Barbara, CA 93101, USA
| | - Erica Keane Rivera
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Julia Sala-Jarque
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Arina Nikitina
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Daniel C. Carrettiero
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
- Center for Natural and Human Sciences, Federal University of ABC, São Bernardo do Campo, SP, Brazil
| | - Matthew Unger
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Olivia Sclafani
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Valerie Fu
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Michael Vigers
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California, USA
| | - Luc Buee
- Univ. Lille, Inserm, CHU Lille, LilNCog – Lille Neuroscience & Cognition, F-59000 Lille, France
- LabEx DISTALZ, Alzheimer & Tauopathies Team, F-59000 Lille, France
| | - Isabelle Landrieu
- CNRS EMR9002 – BSI - Integrative Structural Biology F-59000 Lille, France
| | - Scott Shell
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California, USA
| | - Joan E. Shea
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California, USA
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Risk Factors and Molecular Determinants of Aging-Related Diseases, F-59000 Lille, France. Department of Physics, University of California, Santa Barbara, Santa Barbara, CA
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California, USA
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California, USA
- Lead Contacts
| | - Kenneth S. Kosik
- Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California, USA
- Molecular, Cell and Developmental Biology, University of California Santa Barbara, Santa Barbara, California, USA
- Lead Contacts
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17
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Samolis P, Zhu X, Sander MY. Time-Resolved Mid-Infrared Photothermal Microscopy for Imaging Water-Embedded Axon Bundles. Anal Chem 2023; 95:16514-16521. [PMID: 37880191 PMCID: PMC10652238 DOI: 10.1021/acs.analchem.3c02352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/07/2023] [Indexed: 10/27/2023]
Abstract
Few experimental tools exist for performing label-free imaging of biological samples in a water-rich environment due to the high infrared absorption of water, overlapping with major protein and lipid bands. A novel imaging modality based on time-resolved mid-infrared photothermal microscopy is introduced and applied to imaging axon bundles in a saline bath environment. Photothermally induced spatial gradients at the axon bundle membrane interfaces with saline and surrounding biological tissue are observed and temporally characterized by a high-speed boxcar detection system. Localized time profiles with an enhanced signal-to-noise, hyper-temporal image stacks, and two-dimensional mapping of the time decay profiles are acquired without the need for complex post image processing. Axon bundles are found to have a larger distribution of time decay profiles compared to the water background, allowing background differentiation based on these transient dynamics. The quantitative analysis of the signal evolution over time allows characterizing the level of thermal confinement at different regions. When axon bundles are surrounded by complex heterogeneous tissue, which contains smaller features, a stronger thermal confinement is observed compared to a water environment, thus shedding light on the heat transfer dynamics across aqueous biological interfaces.
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Affiliation(s)
- Panagis
D. Samolis
- Department
of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
- Photonics
Center, Boston University, Boston, Massachusetts 02215, United States
| | - Xuedong Zhu
- Photonics
Center, Boston University, Boston, Massachusetts 02215, United States
- Department
of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Michelle Y. Sander
- Department
of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
- Photonics
Center, Boston University, Boston, Massachusetts 02215, United States
- Department
of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
- Division
of Materials Science and Engineering, Boston
University, Brookline, Massachusetts 02446, United States
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18
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Xia Q, Guo Z, Zong H, Seitz S, Yurdakul C, Ünlü MS, Wang L, Connor JH, Cheng JX. Single virus fingerprinting by widefield interferometric defocus-enhanced mid-infrared photothermal microscopy. Nat Commun 2023; 14:6655. [PMID: 37863905 PMCID: PMC10589364 DOI: 10.1038/s41467-023-42439-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 10/11/2023] [Indexed: 10/22/2023] Open
Abstract
Clinical identification and fundamental study of viruses rely on the detection of viral proteins or viral nucleic acids. Yet, amplification-based and antigen-based methods are not able to provide precise compositional information of individual virions due to small particle size and low-abundance chemical contents (e.g., ~ 5000 proteins in a vesicular stomatitis virus). Here, we report a widefield interferometric defocus-enhanced mid-infrared photothermal (WIDE-MIP) microscope for high-throughput fingerprinting of single viruses. With the identification of feature absorption peaks, WIDE-MIP reveals the contents of viral proteins and nucleic acids in single DNA vaccinia viruses and RNA vesicular stomatitis viruses. Different nucleic acid signatures of thymine and uracil residue vibrations are obtained to differentiate DNA and RNA viruses. WIDE-MIP imaging further reveals an enriched β sheet components in DNA varicella-zoster virus proteins. Together, these advances open a new avenue for compositional analysis of viral vectors and elucidating protein function in an assembled virion.
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Affiliation(s)
- Qing Xia
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Zhongyue Guo
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Haonan Zong
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Scott Seitz
- Department of Microbiology and National Infectious Diseases Laboratories, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Celalettin Yurdakul
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - M Selim Ünlü
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Le Wang
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - John H Connor
- Department of Microbiology and National Infectious Diseases Laboratories, Boston University School of Medicine, Boston, MA, 02118, USA.
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
- Photonics Center, Boston University, Boston, MA, 02215, USA.
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19
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Zhang J, Lin H, Xu J, Zhang M, Ge X, Zhang C, Huang WE, Cheng JX. High-throughput single-cell sorting by stimulated Raman-activated cell ejection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.16.562526. [PMID: 37904930 PMCID: PMC10614813 DOI: 10.1101/2023.10.16.562526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Single-cell sorting is essential to explore cellular heterogeneity in biology and medicine. Recently developed Raman-activated cell sorting (RACS) circumvents the limitations of fluorescence-activated cell sorting, such as the cytotoxicity of labels. However, the sorting throughputs of all forms of RACS are limited by the intrinsically small cross-section of spontaneous Raman scattering. Here, we report a stimulated Raman-activated cell ejection (S-RACE) platform that enables high-throughput single-cell sorting based on high-resolution multi-channel stimulated Raman chemical imaging, in situ image decomposition, and laser-induced cell ejection. The performance of this platform was illustrated by sorting a mixture of 1 μm polymer beads, where 95% yield, 98% purity, and 14 events per second throughput were achieved. Notably, our platform allows live cell ejection, allowing for the growth of single colonies of bacteria and fungi after sorting. To further illustrate the chemical selectivity, lipid-rich Rhodotorula glutinis cells were successfully sorted from a mixture with Saccharomyces cerevisiae, confirmed by downstream quantitative PCR. Furthermore, by integrating a closed-loop feedback control circuit into the system, we realized real-time single-cell imaging and sorting, and applied this method to precisely eject regions of interest from a rat brain tissue section. The reported S-RACE platform opens exciting opportunities for a wide range of single-cell applications in biology and medicine.
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Affiliation(s)
- Jing Zhang
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Haonan Lin
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
| | - Jiabao Xu
- Division of Biomedical Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK
| | - Meng Zhang
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Xiaowei Ge
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Chi Zhang
- Department of Chemistry, Purdue University, 560 Oval Dr., West Lafayette, IN 47907, USA
| | - Wei E. Huang
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | - Ji-Xin Cheng
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
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20
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Yin J, Zhang M, Tan Y, Guo Z, He H, Lan L, Cheng JX. Video-rate mid-infrared photothermal imaging by single-pulse photothermal detection per pixel. SCIENCE ADVANCES 2023; 9:eadg8814. [PMID: 37315131 DOI: 10.1126/sciadv.adg8814] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/09/2023] [Indexed: 06/16/2023]
Abstract
By optically sensing absorption-induced photothermal effect, mid-infrared (IR) photothermal (MIP) microscope enables super-resolution IR imaging of biological systems in water. However, the speed of current sample-scanning MIP system is limited to milliseconds per pixel, which is insufficient for capturing living dynamics. By detecting the transient photothermal signal induced by a single IR pulse through fast digitization, we report a laser-scanning MIP microscope that increases the imaging speed by three orders of magnitude. To realize single-pulse photothermal detection, we use synchronized galvo scanning of both mid-IR and probe beams to achieve an imaging line rate of more than 2 kilohertz. With video-rate speed, we observed the dynamics of various biomolecules in living organisms at multiple scales. Furthermore, by using hyperspectral imaging, we chemically dissected the layered ultrastructure of fungal cell wall. Last, with a uniform field of view more than 200 by 200 square micrometer, we mapped fat storage in free-moving Caenorhabditis elegans and live embryos.
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Affiliation(s)
- Jiaze Yin
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Meng Zhang
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Yuying Tan
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Zhongyue Guo
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Hongjian He
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Lu Lan
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Ji-Xin Cheng
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Photonics Center, Boston University, Boston, MA 02215, USA
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21
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Clark MG, Ma S, Mahapatra S, Mohn KJ, Zhang C. Chemical-imaging-guided optical manipulation of biomolecules. Front Chem 2023; 11:1198670. [PMID: 37214479 PMCID: PMC10196011 DOI: 10.3389/fchem.2023.1198670] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 04/20/2023] [Indexed: 05/24/2023] Open
Abstract
Chemical imaging via advanced optical microscopy technologies has revealed remarkable details of biomolecules in living specimens. However, the ways to control chemical processes in biological samples remain preliminary. The lack of appropriate methods to spatially regulate chemical reactions in live cells in real-time prevents investigation of site-specific molecular behaviors and biological functions. Chemical- and site-specific control of biomolecules requires the detection of chemicals with high specificity and spatially precise modulation of chemical reactions. Laser-scanning optical microscopes offer great platforms for high-speed chemical detection. A closed-loop feedback control system, when paired with a laser scanning microscope, allows real-time precision opto-control (RPOC) of chemical processes for dynamic molecular targets in live cells. In this perspective, we briefly review recent advancements in chemical imaging based on laser scanning microscopy, summarize methods developed for precise optical manipulation, and highlight a recently developed RPOC technology. Furthermore, we discuss future directions of precision opto-control of biomolecules.
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Affiliation(s)
| | - Seohee Ma
- Department of Chemistry, West Lafayette, IN, United States
| | | | | | - Chi Zhang
- Department of Chemistry, West Lafayette, IN, United States
- Purdue Center for Cancer Research, West Lafayette, IN, United States
- Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, United States
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22
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Bouzy P, Lyburn ID, Pinder SE, Scott R, Mansfield J, Moger J, Greenwood C, Bouybayoune I, Cornford E, Rogers K, Stone N. Exploration of utility of combined optical photothermal infrared and Raman imaging for investigating the chemical composition of microcalcifications in breast cancer. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:1620-1630. [PMID: 36880909 PMCID: PMC10065137 DOI: 10.1039/d2ay01197b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 02/21/2023] [Indexed: 06/02/2023]
Abstract
Microcalcifications play an important role in cancer detection. They are evaluated by their radiological and histological characteristics but it is challenging to find a link between their morphology, their composition and the nature of a specific type of breast lesion. Whilst there are some mammographic features that are either typically benign or typically malignant often the appearances are indeterminate. Here, we explore a large range of vibrational spectroscopic and multiphoton imaging techniques in order to gain more information about the composition of the microcalcifications. For the first time, we validated the presence of carbonate ions in the microcalcifications by O-PTIR and Raman spectroscopy at the same time, the same location and the same high resolution (0.5 μm). Furthermore, the use of multiphoton imaging allowed us to create stimulated Raman histology (SRH) images which mimic histological images with all chemical information. In conclusion, we established a protocol for efficiently analysing the microcalcifications by iteratively refining the area of interest.
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Affiliation(s)
- Pascaline Bouzy
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
| | - Iain D Lyburn
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | - Sarah E Pinder
- King's College London, Comprehensive Cancer Centre at Guy's Hospital, London, UK
| | - Robert Scott
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | | | - Julian Moger
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
| | - Charlene Greenwood
- School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, UK
| | - Ihssane Bouybayoune
- King's College London, Comprehensive Cancer Centre at Guy's Hospital, London, UK
| | | | - Keith Rogers
- Cranfield Forensic Institute, Cranfield University, Shrivenham, UK
| | - Nick Stone
- School of Physics and Astronomy, University of Exeter, Exeter, UK.
- Gloucestershire Hospitals NHS Foundation Trust, UK
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23
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Yin J, Zhang M, Tan Y, Guo Z, He H, Lan L, Cheng JX. Video-rate Mid-infrared Photothermal Imaging by Single Pulse Photothermal Detection per Pixel. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.27.530116. [PMID: 36909493 PMCID: PMC10002684 DOI: 10.1101/2023.02.27.530116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
By optically sensing the mid-infrared absorption induced photothermal effect, midinfrared photothermal (MIP) microscope enables super-resolution IR imaging and scrutinizing of biological systems in an aqueous environment. However, the speed of current lock-in based sample-scanning MIP system is limited to 1.0 millisecond or longer per pixel, which is insufficient for capturing dynamics inside living systems. Here, we report a single pulse laserscanning MIP microscope that dramatically increases the imaging speed by three orders of magnitude. We harness a lock-in free demodulation scheme which uses high-speed digitization to resolve single IR pulse induced contrast at nanosecond time scale. To realize single pulse photothermal detection at each pixel, we employ two sets of galvo mirrors for synchronized scanning of mid-infrared and probe beams to achieve an imaging line rate over 2 kHz. With video-rate imaging capability, we observed two types of distinct dynamics of lipids in living cells. Furthermore, by hyperspectral imaging, we chemically dissected a single cell wall at nanometer scale. Finally, with a uniform field of view over 200 by 200 μm 2 and 2 Hz frame rate, we mapped fat storage in free-moving C. elegans and live embryos.
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24
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Xomalis A, Baumberg JJ. Multi-wavelength lock-in spectroscopy for extracting perturbed spectral responses: molecular signatures in nanocavities. OPTICS EXPRESS 2023; 31:5069-5074. [PMID: 36785458 DOI: 10.1364/oe.481639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Detecting small changes in spectral fingerprints at multiple wavelength bands simultaneously is challenging for many spectroscopic techniques. Because power variations, drift, and thermal fluctuations can affect such measurements on different timescales, high speed lock-in detection is the preferred method, however this is typically a single channel (wavelength) technique. Here, a way to achieve multichannel (multi-wavelength) lock-in vibrational spectroscopy is reported, using acousto-optic modulators to convert nanosecond periodic temporal perturbations into spatially distinct spectra. This simultaneously resolves perturbed and reference spectra, by projecting them onto different locations of the spectrometer image. As an example, we apply this multichannel time-resolved methodology to detect molecular frequency upconversion in plasmonic nanocavities from the perturbed Raman scattering at different wavelengths. Our phase-sensitive detection scheme can be applied to any spectroscopy throughout the visible and near-infrared wavelength ranges. Extracting perturbed spectra for measurements on nanosecond timescales allows for capturing many processes, such as semiconductor optoelectronics, high-speed spectro-electrochemistry, catalysis, redox chemistry, molecular electronics, or atomic diffusion across materials.
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