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Chebotarev AS, Ledyaeva VS, Patsap OI, Ivanov AA, Fedotov AB, Belousov VV, Shokhina AG, Lanin AA. Multimodal label-free imaging of murine hepatocellular carcinoma with a subcellular resolution. JOURNAL OF BIOPHOTONICS 2023; 16:e202300228. [PMID: 37679905 DOI: 10.1002/jbio.202300228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/02/2023] [Accepted: 09/05/2023] [Indexed: 09/09/2023]
Abstract
We demonstrate label-free imaging of genetically induced hepatocellular carcinoma (HCC) in a murine model provided by two- and three-photon fluorescence microscopy of endogenous fluorophores excited at the central wavelengths of 790, 980 and 1250 nm and reinforced by second and third harmonic generation microscopy. We show, that autofluorescence imaging presents abundant information about cell arrangement and lipid accumulation in hepatocytes and hepatic stellate cells (HSCs), harmonics generation microscopy provides a versatile tool for fibrogenesis and steatosis study. Multimodal images may be performed by a single ultrafast laser source at 1250 nm falling in tissue transparency window. Various grades of HCC are examined revealing fibrosis, steatosis, liver cell dysplasia, activation of HSCs and hepatocyte necrosis, that shows a great ability of multimodal label-free microscopy to intravital visualization of liver pathology development.
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Affiliation(s)
- Artem S Chebotarev
- Physics Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- Russian Quantum Center, Skolkovo, Russia
| | | | - Olga I Patsap
- Federal Center of Brain Research and Neurotechnologies, Federal Medical-Biological Agency, Moscow, Russia
| | - Anatoli A Ivanov
- Physics Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- Russian Quantum Center, Skolkovo, Russia
| | - Andrei B Fedotov
- Physics Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- Russian Quantum Center, Skolkovo, Russia
| | - Vsevolod V Belousov
- Pirogov Russian National Research Medical University, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical-Biological Agency, Moscow, Russia
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Arina G Shokhina
- Pirogov Russian National Research Medical University, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical-Biological Agency, Moscow, Russia
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Aleksandr A Lanin
- Physics Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- Russian Quantum Center, Skolkovo, Russia
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2
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Mesa KR, O’Connor KA, Ng C, Salvatore SP, Littman DR. Niche-specific macrophage loss promotes skin capillary aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.25.554832. [PMID: 37662387 PMCID: PMC10473701 DOI: 10.1101/2023.08.25.554832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
All mammalian organs depend upon resident macrophage populations to coordinate repair processes and facilitate tissue-specific functions1-3. Recent work has established that functionally distinct macrophage populations reside in discrete tissue niches and are replenished through some combination of local proliferation and monocyte recruitment4,5. Moreover, decline in macrophage abundance and function in tissues has been shown to contribute to many age-associated pathologies, such as atherosclerosis, cancer, and neurodegeneration6-8. Despite these advances, the cellular mechanisms that coordinate macrophage organization and replenishment within an aging tissue niche remain largely unknown. Here we show that capillary-associated macrophages (CAMs) are selectively lost over time, which contributes to impaired vascular repair and tissue perfusion in older mice. To investigate resident macrophage behavior in vivo, we have employed intravital two-photon microscopy to non-invasively image in live mice the skin capillary plexus, a spatially well-defined model of niche aging that undergoes rarefication and functional decline with age. We find that CAMs are lost with age at a rate that outpaces that of capillary loss, leading to the progressive accumulation of capillary niches without an associated macrophage in both mice and humans. Phagocytic activity of CAMs was locally required to repair obstructed capillary blood flow, leaving macrophage-less niches selectively vulnerable to both homeostatic and injury-induced loss in blood flow. Our work demonstrates that homeostatic renewal of resident macrophages is not as finely tuned as has been previously suggested9-11. Specifically, we found that neighboring macrophages do not proliferate or reorganize sufficiently to maintain an optimal population across the skin capillary niche in the absence of additional cues from acute tissue damage or increased abundance of growth factors, such as colony stimulating factor 1 (CSF1). Such limitations in homeostatic renewal and organization of various niche-resident cell types are potentially early contributors to tissue aging, which may provide novel opportunities for future therapeutic interventions.
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Affiliation(s)
- Kailin R. Mesa
- Department of Cell Biology, New York University School of Medicine, New York, NY 10016, USA
| | - Kevin A. O’Connor
- Department of Cell Biology, New York University School of Medicine, New York, NY 10016, USA
| | - Charles Ng
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital, New York, NY 10021, USA
| | - Steven P. Salvatore
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital, New York, NY 10021, USA
| | - Dan R. Littman
- Department of Cell Biology, New York University School of Medicine, New York, NY 10016, USA
- Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
- Howard Hughes Medical Institute, New York, NY 10016, USA
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3
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Radmilović MD, Drvenica IT, Rabasović MD, Ilić VL, Pavlović D, Oasa S, Vukojević V, Perić M, Nikolić SN, Krmpot AJ. Interactions of ultrashort laser pulses with hemoglobin: Photophysical aspects and potential applications. Int J Biol Macromol 2023:125312. [PMID: 37302636 DOI: 10.1016/j.ijbiomac.2023.125312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/16/2023] [Accepted: 06/08/2023] [Indexed: 06/13/2023]
Abstract
Hemoglobin (Hb), a life-sustaining and highly abundant erythrocyte protein, is not readily fluorescent. A few studies have already reported Two-Photon Excited Fluorescence (TPEF) of Hb, however, the mechanisms through which Hb becomes fluorescent upon interaction with ultrashort laser pulses are not completely understood. Here, we characterized photophysically this interaction on Hb thin film and erythrocytes using fluorescence spectroscopy upon single-photon/two-photon absorption, and UV-VIS single-photon absorption spectroscopy. A gradual increase of the fluorescence intensity, ending up with saturation, is observed upon prolonged exposure of Hb thin layer and erythrocytes to ultrashort laser pulses at 730 nm. When compared to protoporphyrin IX (PpIX) and oxidized Hb by H2O2, TPEF spectra from a thin Hb film and erythrocytes showed good mutual agreement, broad peaking at 550 nm, supporting hemoglobin undergoes degradation and that same fluorescent specie(s) originating from the heme moiety are generated. The uniform square shaped patterns of the fluorescent photoproduct exhibited the same level of the fluorescence intensity even after 12 weeks from the formation, indicating high photoproduct stability. We finally demonstrated the full potential of the formed Hb photoproduct with TPEF scanning microscopy towards spatiotemporally controlled micropatterning in HTF and single human erythrocyte labelling and tracking in the whole blood.
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Affiliation(s)
| | - Ivana T Drvenica
- Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | | | - Vesna Lj Ilić
- Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Danica Pavlović
- Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia
| | - Sho Oasa
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Vladana Vukojević
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Mina Perić
- Faculty of Biology, University of Belgrade, Belgrade, Serbia; Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Stanko N Nikolić
- Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia; Division of Arts and Sciences, Texas A&M University at Qatar, Doha, Qatar
| | - Aleksandar J Krmpot
- Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia; Division of Arts and Sciences, Texas A&M University at Qatar, Doha, Qatar.
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4
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Mat Lazim N, Kandhro AH, Menegaldo A, Spinato G, Verro B, Abdullah B. Autofluorescence Image-Guided Endoscopy in the Management of Upper Aerodigestive Tract Tumors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 20:159. [PMID: 36612479 PMCID: PMC9819287 DOI: 10.3390/ijerph20010159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 12/16/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
At this juncture, autofluorescence and narrow-band imaging have resurfaced in the medicine arena in parallel with current technology advancement. The emergence of newly developed optical instrumentation in addition to the discovery of new fluorescence biomolecules have contributed to a refined management of diseases and tumors, especially in the management of upper aerodigestive tract tumors. The advancement in multispectral imaging and micro-endoscopy has also escalated the trends further in the setting of the management of this tumor, in order to gain not only the best treatment outcomes but also facilitate early tumor diagnosis. This includes the usage of autofluorescence endoscopy for screening, diagnosis and treatment of this tumor. This is crucial, as microtumoral deposit at the periphery of the gross tumor can be only assessed via an enhanced endoscopy and even more precisely with autofluorescence endoscopic techniques. Overall, with this new technique, optimum management can be achieved for these patients. Hence, the treatment outcomes can be improved and patients are able to attain better prognosis and survival.
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Affiliation(s)
- Norhafiza Mat Lazim
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Malaysia
| | - Abdul Hafeez Kandhro
- Institute of Medical Technology, Jinnah Sindh Medical University, Karachi 75510, Pakistan
| | - Anna Menegaldo
- Department of Neurosciences, Section of Otolaryngology and Regional Centre for Head and Neck Cancer, University of Padova, 31100 Treviso, Italy
| | - Giacomo Spinato
- Department of Neurosciences, Section of Otolaryngology and Regional Centre for Head and Neck Cancer, University of Padova, 31100 Treviso, Italy
- Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, 31100 Treviso, Italy
| | - Barbara Verro
- Division of Otorhinolaryngology, Department of Biomedicine, Neuroscience and Advanced Diagnostic, University of Palermo, 90127 Palermo, Italy
| | - Baharudin Abdullah
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Malaysia
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5
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Li Y, Shen B, Lu Y, Shi J, Zhao Z, Li H, Hu R, Qu J, Liu L. Multidimensional quantitative characterization of the tumor microenvironment by multicontrast nonlinear microscopy. BIOMEDICAL OPTICS EXPRESS 2022; 13:5517-5532. [PMID: 36425619 PMCID: PMC9664882 DOI: 10.1364/boe.470104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Characterization of the microenvironment features of tumors, such as its microstructures, biomolecular metabolism, and functional dynamics, may provide essential pathologic information about the tumor, tumor margin, and adjacent normal tissue for early and intraoperative diagnosis. However, it can be particularly challenging to obtain faithful and comprehensive pathological information simultaneously from unperturbed tissues due to the complexity of the microenvironment in organisms. Super-multiplex nonlinear optical imaging system emerged and matured as an attractive tool for acquisition and elucidation of the nonlinear properties correlated with tumor microenvironment. Here, we introduced a nonlinear effects-based multidimensional optical imaging platform and methodology to simultaneously and efficiently capture contrasting and complementary nonlinear optical signatures of freshly excised human skin tissues. The qualitative and quantitative analysis of autofluorescence (FAD), collagen fiber, and intracellular components (lipids and proteins) illustrated the differences about morphological changes and biomolecular metabolic processes of the epidermis and dermis in different skin carcinogenic types. Interpretation of multi-parameter stain-free histological findings complements conventional H&E-stained slides for investigating basal cell carcinoma and pigmented nevus, validates the platform's versatility and efficiency for classifying subtypes of skin carcinoma, and provides the potential to translate endogenous molecule into biomarker for assisting in rapid cancer screening and diagnosis.
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Affiliation(s)
- Yanping Li
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Binglin Shen
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yuan Lu
- The Sixth People’s Hospital of Shenzhen, Shenzhen 518052, China
| | - Jinhui Shi
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Zewei Zhao
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Huixian Li
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Rui Hu
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Liwei Liu
- Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province and Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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6
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Burkel BM, Inman DR, Virumbrales-Muñoz M, Hoffmann EJ, Ponik SM. A Label-Free Segmentation Approach for Intravital Imaging of Mammary Tumor Microenvironment. JOURNAL OF VISUALIZED EXPERIMENTS : JOVE 2022:10.3791/63413. [PMID: 35695521 PMCID: PMC9327791 DOI: 10.3791/63413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The ability to visualize complex and dynamic physiological interactions between numerous cell types and the extracellular matrix (ECM) within a live tumor microenvironment is an important step toward understanding mechanisms that regulate tumor progression. While this can be accomplished through current intravital imaging techniques, it remains challenging due to the heterogeneous nature of tissues and the need for spatial context within the experimental observation. To this end, we have developed an intravital imaging workflow that pairs collagen second harmonic generation imaging, endogenous fluorescence from the metabolic co-factor NAD(P)H, and fluorescence lifetime imaging microscopy (FLIM) as a means to non-invasively compartmentalize the tumor microenvironment into basic domains of the tumor nest, the surrounding stroma or ECM, and the vasculature. This non-invasive protocol details the step-by-step process ranging from the acquisition of time-lapse images of mammary tumor models to post-processing analysis and image segmentation. The primary advantage of this workflow is that it exploits metabolic signatures to contextualize the dynamically changing live tumor microenvironment without the use of exogenous fluorescent labels, making it advantageous for human patient-derived xenograft (PDX) models and future clinical use where extrinsic fluorophores are not readily applicable.
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Affiliation(s)
- Brian M. Burkel
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison
| | - David R. Inman
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison
| | - María Virumbrales-Muñoz
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison,Department of Pathology, University of Wisconsin-Madison
| | - Erica J. Hoffmann
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison
| | - Suzanne M. Ponik
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison,Carbone Cancer Center, University of Wisconsin-Madison
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7
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Kline J, Dantus M. Chemical complexity of the retina addressed by novel phasor analysis of unstained multimodal microscopy. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Lahiri J, Moemeni M, Kline J, Magoulas I, Yuwono SH, Laboe M, Shen J, Borhan B, Piecuch P, Jackson JE, Blanchard GJ, Dantus M. Isoenergetic two-photon excitation enhances solvent-to-solute excited-state proton transfer. J Chem Phys 2020; 153:224301. [PMID: 33317305 PMCID: PMC7725536 DOI: 10.1063/5.0020282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/15/2020] [Indexed: 01/05/2023] Open
Abstract
Two-photon excitation (TPE) is an attractive means for controlling chemistry in both space and time. Since isoenergetic one- and two-photon excitations (OPE and TPE) in non-centrosymmetric molecules are allowed to reach the same excited state, it is usually assumed that they produce similar excited-state reactivity. We compare the solvent-to-solute excited-state proton transfer of the super photobase FR0-SB following isoenergetic OPE and TPE. We find up to 62% increased reactivity following TPE compared to OPE. From steady-state spectroscopy, we rule out the involvement of different excited states and find that OPE and TPE spectra are identical in non-polar solvents but not in polar ones. We propose that differences in the matrix elements that contribute to the two-photon absorption cross sections lead to the observed enhanced isoenergetic reactivity, consistent with the predictions of our high-level coupled-cluster-based computational protocol. We find that polar solvent configurations favor greater dipole moment change between ground and excited states, which enters the probability for TPE as the absolute value squared. This, in turn, causes a difference in the Franck-Condon region reached via TPE compared to OPE. We conclude that a new method has been found for controlling chemical reactivity via the matrix elements that affect two-photon cross sections, which may be of great utility for spatial and temporal precision chemistry.
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Affiliation(s)
- Jurick Lahiri
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Mehdi Moemeni
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Jessica Kline
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Ilias Magoulas
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Stephen H. Yuwono
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Maryann Laboe
- Department of Chemical Engineering and Material Science, Michigan State University, East Lansing, Michigan 48824, USA
| | - Jun Shen
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Babak Borhan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Piotr Piecuch
- Authors to whom correspondence should be addressed: , Tel.: +1-517-353-0501; , Tel.: +1-517-353-1151; , Tel.: +1-517-353-0504; , Tel.: +1-517-353-1105; and , Tel.: +1-517-353-1191
| | - James E. Jackson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - G. J. Blanchard
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Marcos Dantus
- Authors to whom correspondence should be addressed: , Tel.: +1-517-353-0501; , Tel.: +1-517-353-1151; , Tel.: +1-517-353-0504; , Tel.: +1-517-353-1105; and , Tel.: +1-517-353-1191
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9
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van Huizen LMG, Radonic T, van Mourik F, Seinstra D, Dickhoff C, Daniels JMA, Bahce I, Annema JT, Groot ML. Compact portable multiphoton microscopy reveals histopathological hallmarks of unprocessed lung tumor tissue in real time. TRANSLATIONAL BIOPHOTONICS 2020; 2:e202000009. [PMID: 34341777 PMCID: PMC8311669 DOI: 10.1002/tbio.202000009] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/18/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
During lung cancer operations a rapid and reliable assessment of tumor tissue can reduce operation time and potentially improve patient outcomes. We show that third harmonic generation (THG), second harmonic generation (SHG) and two-photon excited autofluorescence (2PEF) microscopy reveals relevant, histopathological information within seconds in fresh unprocessed human lung samples. We used a compact, portable microscope and recorded images within 1 to 3 seconds using a power of 5 mW. The generated THG/SHG/2PEF images of tumorous and nontumorous tissues are compared with the corresponding standard histology images, to identify alveolar structures and histopathological hallmarks. Cellular structures (tumor cells, macrophages and lymphocytes) (THG), collagen (SHG) and elastin (2PEF) are differentiated and allowed for rapid identification of carcinoid with solid growth pattern, minimally enlarged monomorphic cell nuclei with salt-and-pepper chromatin pattern, and adenocarcinoma with lipidic and micropapillary growth patterns. THG/SHG/2PEF imaging is thus a promising tool for clinical intraoperative assessment of lung tumor tissue.
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Affiliation(s)
- Laura M. G. van Huizen
- Faculty of Science, Department of Physics, LaserLabVrije Universiteit AmsterdamAmsterdamNetherlands
| | - Teodora Radonic
- Department of PathologyAmsterdam Universities Medical Center/VU University Medical CenterAmsterdamNetherlands
| | | | - Danielle Seinstra
- Department of PathologyAmsterdam Universities Medical Center/VU University Medical CenterAmsterdamNetherlands
| | - Chris Dickhoff
- Department of SurgeryAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Johannes M. A. Daniels
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Idris Bahce
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Jouke T. Annema
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Marie Louise Groot
- Faculty of Science, Department of Physics, LaserLabVrije Universiteit AmsterdamAmsterdamNetherlands
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Sehm T, Uckermann O, Galli R, Meinhardt M, Rickelt E, Krex D, Schackert G, Kirsch M. Label-free multiphoton microscopy as a tool to investigate alterations of cerebral aneurysms. Sci Rep 2020; 10:12359. [PMID: 32704100 PMCID: PMC7378195 DOI: 10.1038/s41598-020-69222-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 06/25/2020] [Indexed: 12/21/2022] Open
Abstract
Cerebral aneurysms are abnormal focal dilatations of arterial vessel walls with pathological vessel structure alterations. Sudden rupture can lead to a subarachnoid hemorrhage, which is associated with a high mortality. Therefore, the origin of cerebral aneurysms as well as the progression to the point of rupture needs to be further investigated. Label-free multimodal multiphoton microscopy (MPM) was performed on resected human aneurysm domes and integrated three modalities: coherent anti-Stokes Raman scattering, endogenous two-photon fluorescence and second harmonic generation. We showed that MPM is a completely label-free and real-time powerful tool to detect pathognomonic histopathological changes in aneurysms, e.g. thickening and thinning of vessel walls, intimal hyperplasia, intra-wall haemorrhage, calcification as well as atherosclerotic changes. In particular, the loss or fragmentation of elastin as well as fibromatous wall remodelling appeared very distinct. Remarkably, cholesterol and lipid deposits were clearly visible in the multiphoton images. MPM provides morphological and biochemical information that are crucial for understanding the mechanisms of aneurysm formation and progression.
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Affiliation(s)
- Tina Sehm
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany
- Neurosurgery, University Hospital Magdeburg, Otto-Von-Guericke University, Magdeburg, Saxony-Anhalt, Germany
| | - Ortrud Uckermann
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany.
| | - Roberta Galli
- Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, , Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Saxony, Germany
- National Center for Tumor Diseases (NCT), Dresden, Saxony, Germany
| | - Matthias Meinhardt
- Pathology and Neuropathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Saxony, Germany
| | - Elke Rickelt
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany
| | - Dietmar Krex
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany
| | - Gabriele Schackert
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany
- National Center for Tumor Diseases (NCT), Dresden, Saxony, Germany
| | - Matthias Kirsch
- Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität (TU) Dresden, Fetscherstraße 74, 01307, Dresden, Saxony, Germany
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Dresden, Saxony, Germany
- National Center for Tumor Diseases (NCT), Dresden, Saxony, Germany
- Asklepios Kliniken Schildautal, Seesen, Lower Saxony, Germany
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11
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Ahn SJ, Ruiz-Uribe NE, Li B, Porter J, Sakadzic S, Schaffer CB. Label-free assessment of hemodynamics in individual cortical brain vessels using third harmonic generation microscopy. BIOMEDICAL OPTICS EXPRESS 2020; 11:2665-2678. [PMID: 32499951 PMCID: PMC7249811 DOI: 10.1364/boe.385848] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 04/07/2020] [Accepted: 04/15/2020] [Indexed: 05/04/2023]
Abstract
We show that third harmonic generation (THG) microscopy using a 1-MHz train of 1,300-nm femtosecond duration laser pulses enabled visualization of the structure and quantification of flow speed in the cortical microvascular network of mice to a depth of > 1 mm. Simultaneous three-photon imaging of an intravascular fluorescent tracer enabled us to quantify the cell free layer thickness. Using the label-free imaging capability of THG, we measured flow speed in different types of vessels with and without the presence of an intravascular tracer conjugated to a high molecular weight dextran (2 MDa FITC-dextran, 5% w/v in saline, 100 µl). We found a ∼20% decrease in flow speeds in arterioles and venules due to the dextran-conjugated FITC, which we confirmed with Doppler optical coherence tomography. Capillary flow speeds did not change, although we saw a ∼7% decrease in red blood cell flux with dextran-conjugated FITC injection.
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Affiliation(s)
- Sung Ji Ahn
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Nancy E. Ruiz-Uribe
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Baoqiang Li
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Jason Porter
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Sava Sakadzic
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Chris B. Schaffer
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
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12
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James J, Kantere D, Enger J, Siarov J, Wennberg AM, Ericson MB. Report on fluorescence lifetime imaging using multiphoton laser scanning microscopy targeting sentinel lymph node diagnostics. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:1-8. [PMID: 32172545 PMCID: PMC7070082 DOI: 10.1117/1.jbo.25.7.071204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
SIGNIFICANCE Sentinel lymph node (SLN) biopsy is an important method for metastasis staging in, e.g., patients with malignant melanoma. Tools enabling prompt histopathological analysis are expected to facilitate diagnostics; optical technologies are explored for this purpose. AIM The objective of this exploratory study was to investigate the potential of adopting multiphoton laser scanning microscopy (MPM) together with fluorescence lifetime analysis (FLIM) for the examination of lymph node (LN) tissue ex vivo. APPROACH Five LN tissue samples (three metastasis positive and two negative) were acquired from a biobank comprising tissues from melanoma patients. Tissues were deparaffinized and subjected to MPM-FLIM using an experimental MPM set-up equipped with a time correlated single photon counting module enabling FLIM. RESULTS The data confirm that morphological features similar to conventional histology were observed. In addition, FLIM analysis revealed elevated morphological contrast, particularly for discriminating between metastatic cells, lymphocytes, and erythrocytes. CONCLUSIONS Taken together, the results from this investigation show promise for adopting MPM-FLIM in the context of SLN diagnostics and encourage further translational studies on fresh tissue samples.
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Affiliation(s)
- Jeemol James
- University of Gothenburg, Biomedical Photonics Group, Department of Chemistry and Molecular Biology, Gothenburg, Sweden
| | - Despoina Kantere
- University of Gothenburg, Institute of Clinical Sciences, Department of Dermatology and Venereology, Gothenburg, Sweden
| | - Jonas Enger
- University of Gothenburg, Department of Physics, Gothenburg, Sweden
| | - Jan Siarov
- University of Gothenburg, Department of Pathology, Gothenburg, Sweden
| | - Ann Marie Wennberg
- University of Gothenburg, Institute of Clinical Sciences, Department of Dermatology and Venereology, Gothenburg, Sweden
| | - Marica B. Ericson
- University of Gothenburg, Biomedical Photonics Group, Department of Chemistry and Molecular Biology, Gothenburg, Sweden
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13
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Casteleiro Costa P, Ledwig P, Bergquist A, Kurtzberg J, Robles FE. Noninvasive white blood cell quantification in umbilical cord blood collection bags with quantitative oblique back-illumination microscopy. Transfusion 2020; 60:588-597. [PMID: 32056228 DOI: 10.1111/trf.15704] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Umbilical cord blood has become an important source of hematopoietic stem and progenitor cells for therapeutic applications. However, cord blood banking (CBB) grapples with issues related to economic viability, partially due to high discard rates of cord blood units (CBUs) that lack sufficient total nucleated cells for storage or therapeutic use. Currently, there are no methods available to assess the likelihood of CBUs meeting storage criteria noninvasively at the collection site, which would improve CBB efficiency and economic viability. MATERIALS AND METHODS To overcome this limitation, we apply a novel label-free optical imaging method, called quantitative oblique back-illumination microscopy (qOBM), which yields tomographic phase and absorption contrast to image blood inside collection bags. An automated segmentation algorithm was developed to count white blood cells and red blood cells (RBCs) and assess hematocrit. Fifteen CBUs were measured. RESULTS qOBM clearly differentiates between RBCs and nucleated cells. The cell-counting analysis shows an average error of 13% compared to hematology analysis, with a near-perfect, one-to-one relationship (slope = 0.94) and strong correlation coefficient (r = 0.86). Preliminary results to assess hematocrit also show excellent agreement with expected values. Acquisition times to image a statistically significant number of cells per CBU were approximately 1 minute. CONCLUSION qOBM exhibits robust performance for quantifying blood inside collection bags. Because the approach is automated and fast, it can potentially quantify CBUs within minutes of collection, without breaching the CBUs' sterile environment. qOBM can reduce costs in CBB by avoiding processing expenses of CBUs that ultimately do not meet storage criteria.
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Affiliation(s)
- Paloma Casteleiro Costa
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Patrick Ledwig
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia
| | - Austin Bergquist
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia
| | - Joanne Kurtzberg
- Carolinas Cord Blood Bank, Durham, North Carolina.,Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
| | - Francisco E Robles
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia
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14
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Kazarine A, Gopal AA, Wiseman PW. Nonlinear microscopy of common histological stains reveals third harmonic generation harmonophores. Analyst 2019; 144:3239-3249. [PMID: 30920574 DOI: 10.1039/c9an00267g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Since its invention over a hundred years ago, histological analysis using coloured dye staining remains the gold standard for histopathology. While these stains provide critical information for a variety of diagnostic purposes, they offer limited two-dimensional histological information. Extending classical histological analysis to three dimensions requires novel imaging approaches such as multiphoton microscopy. Multiphoton microscopy enables multimodal, three-dimensional imaging of histologically stained samples. Specifically, third harmonic generation (THG), a nonlinear optical process in which three incident photons are combined into one by the sample, allows high contrast imaging of tissues stained with absorbing dyes, which in turn act as harmonophores. While this technique has previously been applied to hematoxylin and eosin (H&E) tissue sections, we extend this approach to other commonly used histological stains to demonstrate further potential applications of the technique. We demonstrate THG imaging of both human skin and liver tissue stained with H&E, Verhoeff-Van Gieson (VVG) and Picrosirius Red stains. We find that these stains provide excellent contrast as THG harmonophores, enabling high resolution imaging of histological samples. THG imaging of the Verhoeff stain enables easy detection of elastic fibers while Picrosirius Red acts as an effective harmonophore for imaging collagen fibers of all sizes.
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Affiliation(s)
- Alexei Kazarine
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, QC H3A 0B8, Canada.
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15
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van Huizen LM, Kuzmin NV, Barbé E, van der Velde S, te Velde EA, Groot ML. Second and third harmonic generation microscopy visualizes key structural components in fresh unprocessed healthy human breast tissue. JOURNAL OF BIOPHOTONICS 2019; 12:e201800297. [PMID: 30684312 PMCID: PMC7065644 DOI: 10.1002/jbio.201800297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 05/04/2023]
Abstract
Real-time assessment of excised tissue may help to improve surgical results in breast tumor surgeries. Here, as a step towards this purpose, the potential of second and third harmonic generation (SHG, THG) microscopy is explored. SHG and THG are nonlinear optical microscopic techniques that do not require labeling of tissue to generate 3D images with intrinsic depth-sectioning at sub-cellular resolution. Until now, this technique had been applied on fixated breast tissue or to visualize the stroma only, whereas most tumors start in the lobules and ducts. Here, SHG/THG images of freshly excised unprocessed healthy human tissue are shown to reveal key breast components-lobules, ducts, fat tissue, connective tissue and blood vessels, in good agreement with hematoxylin and eosin histology. DNA staining of fresh unprocessed mouse breast tissue was performed to aid in the identification of cell nuclei in label-free THG images. Furthermore, 2- and 3-photon excited auto-fluorescence images of mouse and human tissue are collected for comparison. The SHG/THG imaging modalities generate high quality images of freshly excised tissue in less than a minute with an information content comparable to that of the gold standard, histopathology. Therefore, SHG/THG microscopy is a promising tool for real-time assessment of excised tissue during surgery.
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Affiliation(s)
- Laura M.G. van Huizen
- Department of PhysicsLaserLab, Faculty of Science, VU AmsterdamAmsterdamThe Netherlands
| | - Nikolay V. Kuzmin
- Department of PhysicsLaserLab, Faculty of Science, VU AmsterdamAmsterdamThe Netherlands
| | - Ellis Barbé
- Department of PathologyAmsterdam UMC/VU University Medical CenterAmsterdamThe Netherlands
| | - Susanne van der Velde
- Department of SurgeryAmsterdam UMC/VU University Medical CenterAmsterdamThe Netherlands
| | - Elisabeth A. te Velde
- Department of SurgeryAmsterdam UMC/VU University Medical CenterAmsterdamThe Netherlands
| | - Marie Louise Groot
- Department of PhysicsLaserLab, Faculty of Science, VU AmsterdamAmsterdamThe Netherlands
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16
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Chen SY, Wu HH. Third-harmonic generation modulation achieved through ground-state depletion. OPTICS LETTERS 2019; 44:315-318. [PMID: 30644889 DOI: 10.1364/ol.44.000315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/09/2018] [Indexed: 06/09/2023]
Abstract
Without real-state transition, third-harmonic generation (THG) cannot be modulated simply by fluorescence-based methods. However, utilizing the absorption-enhancement property of THG, the modulation of THG intensity has been demonstrated through ground-state depletion (GSD) in this Letter. By suppressing the absorption of materials with GSD, the THG intensity can be reduced due to a decreasing of absorption enhancement. The ability to modulate THG intensity can benefit from applying super-resolution techniques to THG microscopy.
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17
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Kazarine A, Baakdah F, Gopal AA, Oyibo W, Georges E, Wiseman PW. Malaria Detection by Third-Harmonic Generation Image Scanning Cytometry. Anal Chem 2019; 91:2216-2223. [PMID: 30601655 DOI: 10.1021/acs.analchem.8b04791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Despite global efforts aimed at its elimination, malaria is still a significant health concern in many countries across the world. The disease is caused by blood-borne parasites, Plasmodium species, and is transmitted by female Anopheles mosquitoes and presents with generic febrile symptoms that are challenging to diagnose clinically. To adequately tackle this issue, an effective detection method is required for screening potential malaria patients for infection. To this day, the gold standard for malaria detection remains basic light microscopy of Giemsa-stained patient blood smears to first enable detection and manual counting to determine the parasite density by a microscopist. While effective at detecting parasites, this method requires both significant time and skilled personnel. As an alternate approach, we propose a new malaria detection method that we call third-harmonic generation image scanning cytometry (THGISC) based on the combination of third-harmonic generation imaging, high-speed motorized scanning, and automated software processing. Third-harmonic generation (THG) is a nonlinear optical process in which the frequency of incident photons is tripled within the sample material. We have previously demonstrated that hemozoin, a metabolic byproduct of the malaria parasite, presents a significant THG signal. We now present a practical approach that uses the selectivity of this contrast mechanism to perform label-free image scanning cytometry of patient blood smears for automated malaria detection. In this work, we applied this technique to lab-cultured parasites and parasites in whole blood obtained from malaria patients. We also compared its effectiveness to parasite counts obtained by classical methods. The ability to easily and rapidly determine parasitemia by THG offers potential not only for the easy confirmation of malaria diagnoses following symptoms, but also the tracking of treatment progress in existing patients, potentially allowing physicians to adjust medication and dosage for each individual.
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Affiliation(s)
- Alexei Kazarine
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| | - Fadi Baakdah
- Institute of Parasitology , McGill University , Sainte Anne de Bellevue , Quebec H9X 3 V9 , Canada
| | - Angelica A Gopal
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| | - Wellington Oyibo
- ANDI Centre of Excellence for Malaria Diagnosis, College of Medicine , University of Lagos , Idi-Araba, Lagos 100254 , Nigeria
| | - Elias Georges
- Institute of Parasitology , McGill University , Sainte Anne de Bellevue , Quebec H9X 3 V9 , Canada
| | - Paul W Wiseman
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada.,Department of Physics , McGill University , 3600 University Street , Montreal , Quebec H3A 2T8 , Canada
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18
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Osseiran S, Cruz JD, Jeong S, Wang H, Fthenakis C, Evans CL. Characterizing stratum corneum structure, barrier function, and chemical content of human skin with coherent Raman scattering imaging. BIOMEDICAL OPTICS EXPRESS 2018; 9:6425-6443. [PMID: 31065440 PMCID: PMC6490993 DOI: 10.1364/boe.9.006425] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/07/2018] [Accepted: 11/14/2018] [Indexed: 05/03/2023]
Abstract
The most superficial layer of the epidermis, the stratum corneum, plays a crucial role in retaining hydration; if its structure or composition is compromised, dry skin may result as a consequence of poor water retention. Dry skin is typically treated with topical application of humectant agents that attract water into the skin. Corneometry, the industry standard for measuring skin hydration, works by assessing the bulk electrical properties of skin. However, this technique samples a large volume of tissue and thus does not resolve the biochemical changes that occur at the cellular level that may underlie mechanisms of dry skin. These limitations can be addressed using coherent Raman scattering (CRS) microscopy to probe the intrinsic vibrational modes of chemical groups such as lipids and water. In the present study, ex vivo human skin explants undergoing dehydration and humectant-induced rehydration were measured via CRS imaging and corneometry. Corneometry data and chemically specific images were obtained from the stratum corneum of each patient sample at each timepoint. The resulting data was statistically analyzed using linear mixed effect model regression analysis. The cellular imaging data revealed water loss in the stratum corneum during dehydration that was correlated with corneometer readings. Interestingly, the imaging data and corneometer readings show differences under the experimental rehydration conditions. The rehydration results suggest that hydration restored by the humectant agents may not be retained by the corneocytes in the ex vivo model system. Given the complementary nature of corneometry, a bulk assessment tool, and CRS microscopy, a modality with subcellular resolution implemented here in an en-face tissue imaging setup, these techniques can be used to measure uptake and efficacy of topical compounds in order to better understand their mode of action and improve therapeutic applications.
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Affiliation(s)
- Sam Osseiran
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129,
USA
- Harvard-MIT Division of Health Sciences and Technology, 77 Massachusetts Avenue E25-518, Cambridge, MA 02139,
USA
| | - Jomer Dela Cruz
- Basic Science Research Division, The Estée Lauder Companies Inc., 155 Pinelawn Road, Melville, NY 11747,
USA
| | - Sinyoung Jeong
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129,
USA
| | - Hequn Wang
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129,
USA
| | - Christina Fthenakis
- Basic Science Research Division, The Estée Lauder Companies Inc., 155 Pinelawn Road, Melville, NY 11747,
USA
| | - Conor L. Evans
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129,
USA
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19
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Liao C, Zhu X, Zhou L, Wang Z, Liu W, Chen J. Visualize and quantify the structural alteration of the rat spinal cord injury based on multiphoton microscopy. Lasers Med Sci 2018; 34:561-569. [PMID: 30196440 DOI: 10.1007/s10103-018-2630-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/28/2018] [Indexed: 11/25/2022]
Abstract
The development of imaging technique to visualize and quantify the structural alteration of the spinal cord injury (SCI) may lead to better understanding and treatments of the injuries. In this work, multiphoton microscopy (MPM) based on two-photon excited fluorescence (TPEF) and second-harmonic generation (SHG) was tentatively applied to quantitatively visualize the cellular microstructures of SCI to demonstrate the feasibility and superiority of MPM in SCI imaging. High-contrast MPM images of normal and injured spinal cord tissue were obtained for comparison. Moreover, the changes of injured spinal cord were characterized by the quantitative analysis of the MPM images. These results showed that MPM combined with quantitative method has the ability to identify the characteristics of spinal cord injury including the changes in the contents of nerve fibers and extracellular matrix. With the advancement of MPM, we believe that this technique has great potential to provide the histological diagnosis for the monitoring and evaluation of SCI.
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Affiliation(s)
- Chenxi Liao
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
| | - Xiaoqin Zhu
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, China.
| | - Linquan Zhou
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, 350001, People's Republic of China
| | - Zhenyu Wang
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, 350001, People's Republic of China.
| | - Wenge Liu
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, 350001, People's Republic of China
| | - Jianxin Chen
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
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20
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Ledwig P, Sghayyer M, Kurtzberg J, Robles FE. Dual-wavelength oblique back-illumination microscopy for the non-invasive imaging and quantification of blood in collection and storage bags. BIOMEDICAL OPTICS EXPRESS 2018; 9:2743-2754. [PMID: 30258687 PMCID: PMC6154191 DOI: 10.1364/boe.9.002743] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/11/2018] [Accepted: 05/12/2018] [Indexed: 05/10/2023]
Abstract
There is currently no low-cost method to quantitatively assess the contents of a blood bag without breaching the bag and potentially damaging the sample. Towards this end, we adapt oblique back-illumination microscopy (OBM) to rapidly, inexpensively, and non-invasively screen blood bags for red blood cell (RBC) morphology and white blood cell (WBC) count. OBM has been recently introduced as a tomographic technique that produces high-resolution wide-field images based on phase-gradient and transmission. Here we modify this technique to include illumination at dual wavelengths to facilitate spectral analysis for cell classification. Further, we apply a modified 2D Hilbert transform to recover the phase information from the phase-gradient images for facile cell segmentation. Blood cells are classified as WBCs and RBCs, and counted based on shape, absorption spectrum, and phase profile using an automated algorithm. This work has important implications for the non-invasive assessment of (1) cell viability in storage bags for transfusion applications and (2) suitability of a cord blood collection bag for stem cell therapy applications.
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Affiliation(s)
- Patrick Ledwig
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Moses Sghayyer
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Joanne Kurtzberg
- Carolinas Cord Blood Bank, Durham, NC
- Department of Pediatrics, Duke University Medical Center, Durham, NC 27705,
USA
| | - Francisco E. Robles
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
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21
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Tinning PW, Scrimgeour R, McConnell G. Widefield standing wave microscopy of red blood cell membrane morphology with high temporal resolution. BIOMEDICAL OPTICS EXPRESS 2018; 9:1745-1761. [PMID: 29675316 PMCID: PMC5905920 DOI: 10.1364/boe.9.001745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 05/10/2023]
Abstract
We report the first demonstration of widefield standing wave (SW) microscopy of fluorescently labelled red blood cells at high speeds that allow for the rapid imaging of membrane deformations. Using existing and custom MATLAB functions, we also present a method to generate 2D and 3D reconstructions of the SW data for improved visualization of the cell. We compare our technique with standard widefield epifluorescence imaging and show that the SW technique not only reveals more topographical information about the specimen but does so without increasing toxicity or the rate of photobleaching and could make this a powerful technique for the diagnosis or study of red blood cell morphology and biomechanical characteristics.
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Affiliation(s)
- Peter W Tinning
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK
| | - Ross Scrimgeour
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK
| | - Gail McConnell
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK
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22
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Lin YH, Huang SS, Wu SJ, Sung KB. Morphometric analysis of erythrocytes from patients with thalassemia using tomographic diffractive microscopy. JOURNAL OF BIOMEDICAL OPTICS 2017; 22:1-11. [PMID: 29188659 DOI: 10.1117/1.jbo.22.11.116009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 11/13/2017] [Indexed: 05/23/2023]
Abstract
Complete blood count is the most common test to detect anemia, but it is unable to obtain the abnormal shape of erythrocytes, which highly correlates with the hematologic function. Tomographic diffractive microscopy (TDM) is an emerging technique capable of quantifying three-dimensional (3-D) refractive index (RI) distributions of erythrocytes without labeling. TDM was used to characterize optical and morphological properties of 172 erythrocytes from healthy volunteers and 419 erythrocytes from thalassemic patients. To efficiently extract and analyze the properties of erythrocytes, we developed an adaptive region-growing method for automatically delineating erythrocytes from 3-D RI maps. The thalassemic erythrocytes not only contained lower hemoglobin content but also showed doughnut shape and significantly lower volume, surface area, effective radius, and average thickness. A multi-indices prediction model achieved perfect accuracy of diagnosing thalassemia using four features, including the optical volume, surface-area-to-volume ratio, sphericity index, and surface area. The results demonstrate the ability of TDM to provide quantitative, hematologic measurements and to assess morphological features of erythrocytes to distinguish healthy and thalassemic erythrocytes.
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Affiliation(s)
- Yang-Hsien Lin
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
| | - Shin-Shyang Huang
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
| | - Shang-Ju Wu
- National Taiwan University Hospital, Department of Internal Medicines, Taiwan
| | - Kung-Bin Sung
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
- National Taiwan University, Department of Electrical Engineering, Taiwan
- National Taiwan University, Molecular Imaging Center, Taiwan
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23
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Jang WH, Yoon Y, Kim W, Kwon S, Lee S, Song D, Choi JW, Kim KH. Visualization of laser tattoo removal treatment effects in a mouse model by two-photon microscopy. BIOMEDICAL OPTICS EXPRESS 2017; 8:3735-3748. [PMID: 28856046 PMCID: PMC5560837 DOI: 10.1364/boe.8.003735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/19/2017] [Accepted: 07/16/2017] [Indexed: 05/02/2023]
Abstract
Laser tattoo removal is an effective method of eliminating tattoo particles in the skin. However, laser treatment cannot always remove the unwanted tattoo completely, and there are risks of either temporary or permanent side effects. Studies using preclinical animal models could provide detailed information on the effects of laser treatment in the skin, and might help to minimize side effects in clinical practices. In this study, two-photon microscopy (TPM) was used to visualize the laser treatment effects on tattoo particles in both phantom specimens and in vivo mouse models. Fluorescent tattoo ink was used for particle visualization by TPM, and nanosecond (ns) and picosecond (ps) lasers at 532 nm were used for treatment. In phantom specimens, TPM characterized the fragmentation of individual tattoo particles by tracking them before and after the laser treatment. These changes were confirmed by field emission scanning electron microscopy (FE-SEM). TPM was used to measure the treatment efficiency of the two lasers at different laser fluences. In the mouse model, TPM visualized clusters of tattoo particles in the skin and detected their fragmentation after the laser treatment. Longitudinal TPM imaging observed the migration of cells containing tattoo particles after the laser treatment. These results show that TPM may be useful for the assessment of laser tattoo removal treatment in preclinical studies.
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Affiliation(s)
- Won Hyuk Jang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, South Korea
- Authors contributed equally
| | - Yeoreum Yoon
- Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, South Korea
- Authors contributed equally
| | - Wonjoong Kim
- Lutronic Center, 219 Sowon-ro, Deogyang-gu, Goyang-si, Gyeonggi-do, 412-223, South Korea
| | - Soonjae Kwon
- Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, South Korea
| | - Seunghun Lee
- Lutronic Center, 219 Sowon-ro, Deogyang-gu, Goyang-si, Gyeonggi-do, 412-223, South Korea
| | - Duke Song
- Lutronic Center, 219 Sowon-ro, Deogyang-gu, Goyang-si, Gyeonggi-do, 412-223, South Korea
| | - Jong Woon Choi
- Lutronic Center, 219 Sowon-ro, Deogyang-gu, Goyang-si, Gyeonggi-do, 412-223, South Korea
| | - Ki Hean Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, South Korea
- Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, South Korea
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24
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Murashova GA, Mancuso CA, Sakami S, Palczewski K, Palczewska G, Dantus M. Epi-direction detected multimodal imaging of an unstained mouse retina with a Yb-fiber laser. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2017; 10069:100692K. [PMID: 28989217 PMCID: PMC5627661 DOI: 10.1117/12.2252457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, we present all epi-direction detected images of an unstained mouse retina using multiphoton microscopy with a sub-50 fs Yb-fiber laser centered at 1.07 μm. This wavelength is particularly interesting as the fundamental wavelength is transparent to the anterior segment of the eye and the higher harmonics are above DNA-damaging UV wavelengths. We present a characterization of the multimodal signals emitted from the different retinal layers, as well as from the choroid and the sclera. By characterizing native multiphoton signals from the retina, we move closer to having Yb-fiber considered for in vivo diagnosis of retinal disease through multiphoton microscopy as well as for corrective therapies.
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Affiliation(s)
| | | | - Sanae Sakami
- Department of Pharmacology, Case Western Reserve University, Cleveland OH 44106, USA
| | - Krzysztof Palczewski
- Department of Pharmacology, Case Western Reserve University, Cleveland OH 44106, USA
| | | | - Marcos Dantus
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
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