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Jia H, Chen X, Shen J, Liu R, Hou P, Yue S. Label-Free Fiber-Optic Raman Spectroscopy for Intravascular Coronary Atherosclerosis and Plaque Detection. ACS OMEGA 2024; 9:27789-27797. [PMID: 38973848 PMCID: PMC11223210 DOI: 10.1021/acsomega.4c01611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/15/2024] [Accepted: 06/12/2024] [Indexed: 07/09/2024]
Abstract
The rupture of atherosclerotic plaques remains one of the leading causes of morbidity and mortality worldwide. The plaques have certain pathological characteristics including a fibrous cap, inflammation, and extensive lipid deposition in a lipid core. Various invasive and noninvasive imaging techniques can interrogate structural aspects of atheroma; however, the composition of the lipid core in coronary atherosclerosis and plaques cannot be accurately detected. Fiber-optic Raman spectroscopy has the capability of in vivo rapid and accurate biomarker detection as an emerging omics technology. Previous studies demonstrated that an intravascular Raman spectroscopic technique may assess and manage the therapeutic and medication strategies intraoperatively. The Raman spectral information identified plaque depositions consisting of lipids, triglycerides, and cholesterol esters as the major components by comparing normal region and early plaque formation region with histology. By focusing on the composition of plaques, we could identify the subgroups of plaques accurately and rapidly by Raman spectroscopy. Collectively, this fiber-optic Raman spectroscopy opens up new opportunities for coronary atherosclerosis and plaque detection, which would assist optimal surgical strategy and instant postoperative decision-making. In this paper, we will review the advancement of label-free fiber-optic Raman probe spectroscopy and its applications of coronary atherosclerosis and atherosclerotic plaque detection.
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Affiliation(s)
- Hao Jia
- Key
Laboratory of Biomechanics and Mechanobiology (Beihang University),
Ministry of Education, Institute of Medical Photonics, Beijing Advanced
Innovation Center for Biomedical Engineering, School of Biological
Science and Medical Engineering, Beihang
University, Beijing 100191, China
| | - Xun Chen
- Key
Laboratory of Biomechanics and Mechanobiology (Beihang University),
Ministry of Education, Institute of Medical Photonics, Beijing Advanced
Innovation Center for Biomedical Engineering, School of Biological
Science and Medical Engineering, Beihang
University, Beijing 100191, China
| | - Jianghao Shen
- Key
Laboratory of Biomechanics and Mechanobiology (Beihang University),
Ministry of Education, Institute of Medical Photonics, Beijing Advanced
Innovation Center for Biomedical Engineering, School of Biological
Science and Medical Engineering, Beihang
University, Beijing 100191, China
| | - Rujia Liu
- Key
Laboratory of Biomechanics and Mechanobiology (Beihang University),
Ministry of Education, Institute of Medical Photonics, Beijing Advanced
Innovation Center for Biomedical Engineering, School of Biological
Science and Medical Engineering, Beihang
University, Beijing 100191, China
| | - Peipei Hou
- Department
of Cardiology, The People’s Hospital
of China Medical University, Shenyang 110016, China
| | - Shuhua Yue
- Key
Laboratory of Biomechanics and Mechanobiology (Beihang University),
Ministry of Education, Institute of Medical Photonics, Beijing Advanced
Innovation Center for Biomedical Engineering, School of Biological
Science and Medical Engineering, Beihang
University, Beijing 100191, China
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2
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Tolstik E, Lehnart SE, Soeller C, Lorenz K, Sacconi L. Cardiac multiscale bioimaging: from nano- through micro- to mesoscales. Trends Biotechnol 2024; 42:212-227. [PMID: 37806897 DOI: 10.1016/j.tibtech.2023.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 10/10/2023]
Abstract
Cardiac multiscale bioimaging is an emerging field that aims to provide a comprehensive understanding of the heart and its functions at various levels, from the molecular to the entire organ. It combines both physiologically and clinically relevant dimensions: from nano- and micrometer resolution imaging based on vibrational spectroscopy and high-resolution microscopy to assess molecular processes in cardiac cells and myocardial tissue, to mesoscale structural investigations to improve the understanding of cardiac (patho)physiology. Tailored super-resolution deep microscopy with advanced proteomic methods and hands-on experience are thus strategically combined to improve the quality of cardiovascular research and support future medical decision-making by gaining additional biomolecular information for translational and diagnostic applications.
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Affiliation(s)
- Elen Tolstik
- Department of Cardiovascular Pharmacology, Translational Research, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V. Bunsen-Kirchhoff-Strasse 11, 44139 Dortmund, Germany.
| | - Stephan E Lehnart
- Department of Cardiology and Pneumology, Cellular Biophysics and Translational Cardiology Section, Heart Research Center Göttingen, University Medical Center Göttingen, Georg-August University Göttingen, Robert-Koch-Strasse 42a, 37075 Göttingen, Germany; Cluster of Excellence Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells (MBExC2067), University of Göttingen, 37073 Göttingen, Germany; Collaborative Research Center SFB1190 Compartmental Gates and Contact Sites in Cells, University of Göttingen, 37073 Göttingen, Germany
| | - Christian Soeller
- Department of Physiology, University of Bern, Bühlplatz 5, 3012 Bern, Switzerland
| | - Kristina Lorenz
- Department of Cardiovascular Pharmacology, Translational Research, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V. Bunsen-Kirchhoff-Strasse 11, 44139 Dortmund, Germany; Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Strasse 9, 97078 Würzburg, Germany
| | - Leonardo Sacconi
- Institute of Clinical Physiology, National Research Council, Rome, Italy; Institute for Experimental Cardiovascular Medicine, University Freiburg, Elsässer Strasse 2q, 79110 Freiburg, Germany.
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3
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Rokni E, Simon JC. The effect of crystal composition and environment on the color Doppler ultrasound twinkling artifact. Phys Med Biol 2023; 68. [PMID: 36634375 DOI: 10.1088/1361-6560/acb2ad] [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: 06/12/2022] [Accepted: 01/12/2023] [Indexed: 01/14/2023]
Abstract
Objective.Pathological mineralizations form throughout the body and can be difficult to detect using conventional imaging methods. Color Doppler ultrasound twinkling highlights ∼60% of kidney stones with a rapid color shift and is theorized to arise from crevice microbubbles as twinkling disappears on kidney stones at elevated pressures and scratched acrylic balls in ethanol. Twinkling also sometimes appears on other pathological mineralizations; however, it is unclear whether the etiology of twinkling is the same as for kidney stones.Approach.In this study, five cholesterol, calcium phosphate, and uric acid crystals were grownin vitroand imaged in Doppler mode with a research ultrasound system and L7-4 transducer in water. To evaluate the influence of pressure on twinkling, the same crystals were imaged in a high-pressure chamber. Then, the effect of surface tension on twinkling was evaluated by imaging crystals in different concentrations of surfactant (1%, 2%, 3%, 4%) and ethanol (10%, 30%, 50%, 70%), artificial urine, bovine blood, and a tissue-mimicking phantom.Main results. Results showed that all crystals twinkled in water, with cholesterol twinkling significantly more than calcium phosphate and uric acid. When the ambient pressure was increased, twinkling disappeared for all tested crystals when pressures reached 7 MPa (absolute) and reappeared when returned to ambient pressure (0.1 MPa). Similarly, twinkling across all crystals decreased with surface tension when imaged in the surfactant and ethanol (statistically significant when surface tension <22 mN m-1) and decreased in blood (surface tension = 52.7 mN m-1) but was unaffected by artificial urine (similar surface tension to water). In the tissue-mimicking phantom, twinkling increased for cholesterol and calcium phosphate crystals with no change observed in uric acid crystals.Significance.Overall, these results support the theory that bubbles are present on crystals and cause twinkling, which could be leveraged to improve twinkling for the detection of other pathological mineralizations.
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Affiliation(s)
- Eric Rokni
- Graduate Program in Acoustics, The Pennsylvania State University, 201E Applied Science Building, University Park, PA 16802, United States of America
| | - Julianna C Simon
- Graduate Program in Acoustics, The Pennsylvania State University, 201E Applied Science Building, University Park, PA 16802, United States of America
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4
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Xing J, Lee DR, Kim JW, Yoo H. Histological classification of atherosclerotic arteries using high-speed confocal Raman microscopy with machine learning. JOURNAL OF BIOPHOTONICS 2023; 16:e202200243. [PMID: 36238991 DOI: 10.1002/jbio.202200243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/13/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Confocal Raman microscopy is a useful tool to observe composition and constitution of label-free samples at high spatial resolution. However, accurate characterization of microstructure of tissue and its application in diagnostic imaging are challenging due to weak Raman scattering signal and complex chemical composition of tissue. We have developed a method to improve imaging speed, diffraction efficiency, and spectral resolution of confocal Raman microscopy. In addition to the novel imaging technique, the machine learning method enables confocal Raman microscopy to visualize accurate histology of tissue sections. Here, we have demonstrated the performance of the proposed method by measuring histological classification of atherosclerotic arteries and compared the histological confocal Raman images with the conventional staining method. Our new confocal Raman microscopy enables us to comprehend the structure and biochemical composition of tissue and diagnose the buildup of atherosclerotic plaques in the arterial wall without labeling.
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Affiliation(s)
- Jingchao Xing
- Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea
| | - Dong-Ryoung Lee
- School of Mechanical Engineering, Soongsil University, Seoul, Republic of Korea
| | - Jin Won Kim
- Multimodal Imagng and Theranostic Laboratory, Cardiovascular Center, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Hongki Yoo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
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5
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Kozik A, Pavlova M, Petrov I, Bychkov V, Kim L, Dorozhko E, Cheng C, Rodriguez RD, Sheremet E. A review of surface-enhanced Raman spectroscopy in pathological processes. Anal Chim Acta 2021; 1187:338978. [PMID: 34753586 DOI: 10.1016/j.aca.2021.338978] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 12/17/2022]
Abstract
With the continuous growth of the human population and new challenges in the quality of life, it is more important than ever to diagnose diseases and pathologies with high accuracy, sensitivity and in different scenarios from medical implants to the operation room. Although conventional methods of diagnosis revolutionized healthcare, alternative analytical methods are making their way out of academic labs into clinics. In this regard, surface-enhanced Raman spectroscopy (SERS) developed immensely with its capability to achieve single-molecule sensitivity and high-specificity in the last two decades, and now it is well on its way to join the arsenal of physicians. This review discusses how SERS is becoming an essential tool for the clinical investigation of pathologies including inflammation, infections, necrosis/apoptosis, hypoxia, and tumors. We critically discuss the strategies reported so far in nanoparticle assembly, functionalization, non-metallic substrates, colloidal solutions and how these techniques improve SERS characteristics during pathology diagnoses like sensitivity, selectivity, and detection limit. Moreover, it is crucial to introduce the most recent developments and future perspectives of SERS as a biomedical analytical method. We finally discuss the challenges that remain as bottlenecks for a routine SERS implementation in the medical room from in vitro to in vivo applications. The review showcases the adaptability and versatility of SERS to resolve pathological processes by covering various experimental and analytical methods and the specific spectral features and analysis results achieved by these methods.
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Affiliation(s)
- Alexey Kozik
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia; Siberian Medical State University, Moskovskiy Trakt, 2, Tomsk, 634050, Russia
| | - Marina Pavlova
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia; Siberian Medical State University, Moskovskiy Trakt, 2, Tomsk, 634050, Russia
| | - Ilia Petrov
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Vyacheslav Bychkov
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk, 634009, Russia
| | - Larissa Kim
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Elena Dorozhko
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Raul D Rodriguez
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia.
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Nanashima A, Komi M, Imamura N, Yazaki S, Hiyoshi M, Hamada T, Yano K, Nishida T, Enzaki M, Sakae T. Novel analysis using magnetic resonance cholangiography for patients with pancreaticobiliary maljunction. Surg Today 2021; 52:385-394. [PMID: 34324090 DOI: 10.1007/s00595-021-02349-8] [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: 04/19/2021] [Accepted: 06/01/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE We used a novel diagnostic Fourier transform (FT) algorithm of the entire extrahepatic bile duct (EHBD) measured by magnetic resonance cholangiography (MRC) to evaluate subtle deformation of bile duct lumen, indicating the malignant potential of EHBD, in patients with pancreaticobiliary maljunction (PBMJ) and in a comparative group of controls without PBMJ. METHODS From the workstation, the EHBD lumen was traced automatically and a 2D diagram cross section was measured at 0.5 mm-longitudinal intervals. The FT-based integrated power spectral density function value (FTPSDI) of the diameter or area (mm2 or mm4/Hz) and the phase value distribution entropy (PVDE) were also measured. RESULTS There were 16 patients with undilated PBMJ and 7 with dilated PBMJ. The control group comprised 10 patients with a normal bile duct, 20 with bile duct carcinoma (BDC), and 1 with primary sclerosing cholangitis. Both the diameter and area of the dilated bile ducts and the ducts with early- or advanced-stage BDC were significantly greater than those of the normal duct (p < 0.05). The undilated type of PBMJ tended to have a larger FTPSDI diameter than a normal bile duct, which had a smaller diameter than the dilated type of PBMJ or BDC. BDC had a significantly larger FTPSDI diameter (p < 0.05) and the cutoff value for accuracy was 168 mm2 Hz-1. CONCLUSION The novel mathematical FTPSDI is a promising indicator of whether preventive EHBD resection is necessary for patients with PBMJ, which can be widely applied in the early diagnosis of other biliary diseases.
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Affiliation(s)
- Atsushi Nanashima
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan.
| | - Masanori Komi
- Division of Radiology, Miyazaki University Hospital, Miyazaki, Japan
| | - Naoya Imamura
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Shigetoshi Yazaki
- Department of Mathematics, School of Science and Technology, Meiji University, Kanagawa, Japan
| | - Masahide Hiyoshi
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Takeomi Hamada
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Koichi Yano
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Takahiro Nishida
- Division of Hepato-Biliary-Pancreas Surgery, Department of Surgery, University of Miyazaki Faculty of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Masahiro Enzaki
- Division of Radiology, Miyazaki University Hospital, Miyazaki, Japan
| | - Tatefumi Sakae
- Department of Radiology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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7
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Huang X, Zhang M, Ming J, Ning X, Bai S. High-Strength and High-Toughness Silk Fibroin Hydrogels: A Strategy Using Dynamic Host-Guest Interactions. ACS APPLIED BIO MATERIALS 2020; 3:7103-7112. [PMID: 35019370 DOI: 10.1021/acsabm.0c00933] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Natural polymer-based hydrogels attract great attention because of their inherent biocompatibility and controllable biodegradability. However, the broad applications of these hydrogels require a combination of high mechanical strength, high toughness, fatigue resistance, as well as self-healing. The integration of this combination into one natural polymer-based hydrogel remains challenging. Here, a molecular design strategy was proposed to fabricate mechanically robust silk fibroin-based hydrogels using host-guest interactions. Silk fibroin molecules was chemically modified with cholesterol (Chol, guest) or β-cyclodextrin (β-CD, host), and host-guest interaction between Chol and β-CD moieties drove the supramolecular assemblies of hydrogels. The dissociation/reassociation behavior of host-guest complexation, serving as sacrificial bonds, endowed hydrogels with effective energy dissipation and rapid self-healing ability. The prepared silk fibroin-based hydrogels exhibited high mechanical strength, high toughness, and remarkable fatigue resistance, superior to conventional silk fibroin hydrogels. Moreover, due to reversible host-guest interactions, hydrogels achieved facile functional recovery after damage without any external stimuli. This design strategy provides an avenue to develop natural polymer-based materials with robust mechanical properties, thus broadening current hydrogel applications.
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Affiliation(s)
- Xiaowei Huang
- Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles and Clothing, Qingdao University, Qingdao 266071, People's Republic of China
| | - Mengya Zhang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Jinfa Ming
- Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles and Clothing, Qingdao University, Qingdao 266071, People's Republic of China
| | - Xin Ning
- Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles and Clothing, Qingdao University, Qingdao 266071, People's Republic of China
| | - Shumeng Bai
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, People's Republic of China
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8
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Bec J, Shaik TA, Krafft C, Bocklitz TW, Alfonso-Garcia A, Margulies KB, Popp J, Marcu L. Investigating Origins of FLIm Contrast in Atherosclerotic Lesions Using Combined FLIm-Raman Spectroscopy. Front Cardiovasc Med 2020; 7:122. [PMID: 32793637 PMCID: PMC7385056 DOI: 10.3389/fcvm.2020.00122] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 06/12/2020] [Indexed: 12/30/2022] Open
Abstract
Background: Fluorescence lifetime imaging (FLIm) is a spectroscopic imaging technique able to characterize the composition of luminal surface of arterial vessels. Studies of human coronary samples demonstrated that distinct atherosclerotic lesion types are characterized by FLIm features associate with distinct tissue molecular makeup. While conventional histology has provided indications about potential sources of molecular contrast, specific information about the origin of FLIm signals is lacking. Here we investigate whether Raman spectroscopy, a technique able to evaluate chemical content of biological samples, can provide additional insight into the origin of FLIm contrast. Methods: Six human coronary artery samples were imaged using FLIm (355 nm excitation)-Raman spectroscopy (785 nm excitation) via a multimodal fiber optic probe. The spatial distribution of molecular contrast in FLIm images was analyzed in relationship with histological findings. Raman data was investigated using an endmember technique and compared with histological findings. A descriptive modeling approach based on multivariate regression was used to identify Raman bands related with changes in lifetime in four spectral channels (violet: 387/35 nm, blue: 443/29 nm, green: 546/38 nm, and red: 628/53 nm). Results: Fluorescence lifetime variations in the violet, blue and green spectral bands were observed for distinct areas of each tissue sample associated with distinct pathologies. Analysis of Raman signals from areas associated with normal, pathological intimal thickening, and fibrocalcific regions demonstrated the presence of hydroxyapatite, collagenous proteins, carotene, cholesterol, and triglycerides. The FLIm and Raman descriptive modeling analysis indicated that lifetime increase in the violet spectral band was associated with increased presence of cholesterol and carotenes, a new finding consistent with LDL accumulation in atherosclerotic lesions, and not with collagen proteins, as expected from earlier studies. Conclusions: The systematic, quantitative analysis of the multimodal FLIm-Raman dataset using a descriptive modeling approach led to the identification of LDL accumulation as the primary source of lifetime contrast in atherosclerotic lesions in the violet spectral range. Earlier FLIm validation studies relying on histopathological findings had associated this contrast to increased collagen content, also present in advanced lesions, thus demonstrating the benefits of alternative validation methods.
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Affiliation(s)
- Julien Bec
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States.,Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Friedrich-Schiller-University, Jena, Germany.,Leibniz Institute of Photonic Technology, Jena, Germany
| | | | | | - Thomas W Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Friedrich-Schiller-University, Jena, Germany.,Leibniz Institute of Photonic Technology, Jena, Germany
| | - Alba Alfonso-Garcia
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Kenneth B Margulies
- Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics (IPC), Friedrich-Schiller-University, Jena, Germany.,Leibniz Institute of Photonic Technology, Jena, Germany
| | - Laura Marcu
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
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9
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Kallenbach-Thieltges A, Großerueschkamp F, Jütte H, Kuepper C, Reinacher-Schick A, Tannapfel A, Gerwert K. Label-free, automated classification of microsatellite status in colorectal cancer by infrared imaging. Sci Rep 2020; 10:10161. [PMID: 32576892 PMCID: PMC7311536 DOI: 10.1038/s41598-020-67052-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 05/21/2020] [Indexed: 12/12/2022] Open
Abstract
Challenging histopathological diagnostics in cancer include microsatellite instability-high (MSI-H) colorectal cancer (CRC), which occurs in 15% of early-stage CRC and is caused by a deficiency in the mismatch repair system. The diagnosis of MSI-H cannot be reliably achieved by visual inspection of a hematoxylin and eosin stained thin section alone, but additionally requires subsequent molecular analysis. Time- and sample-intensive immunohistochemistry with subsequent fragment length analysis is used. The aim of the presented feasibility study is to test the ability of quantum cascade laser (QCL)-based infrared (IR) imaging as an alternative diagnostic tool for MSI-H in CRC. We analyzed samples from 100 patients with sporadic CRC UICC stage II and III. Forty samples were used to develop the random forest classifier and 60 samples to verify the results on an independent blinded dataset. Specifically, 100% sensitivity and 93% specificity were achieved based on the independent 30 MSI-H- and 30 microsatellite stable (MSS)-patient validation cohort. This showed that QCL-based IR imaging is able to distinguish between MSI-H and MSS for sporadic CRC - a question that goes beyond morphological features - based on the use of spatially resolved infrared spectra used as biomolecular fingerprints.
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Affiliation(s)
- Angela Kallenbach-Thieltges
- Ruhr University Bochum, Center for Protein Diagnostics (ProDi), Biospectroscopy, Bochum, Germany.,Ruhr University Bochum, Faculty of Biology and Biotechnology, Department of Biophysics, Bochum, Germany
| | - Frederik Großerueschkamp
- Ruhr University Bochum, Center for Protein Diagnostics (ProDi), Biospectroscopy, Bochum, Germany.,Ruhr University Bochum, Faculty of Biology and Biotechnology, Department of Biophysics, Bochum, Germany
| | - Hendrik Jütte
- Institute of Pathology, Ruhr University Bochum, Bochum, Germany
| | - Claus Kuepper
- Ruhr University Bochum, Center for Protein Diagnostics (ProDi), Biospectroscopy, Bochum, Germany.,Ruhr University Bochum, Faculty of Biology and Biotechnology, Department of Biophysics, Bochum, Germany
| | - Anke Reinacher-Schick
- Department of Hematology, Oncology and Palliative Care, St. Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | | | - Klaus Gerwert
- Ruhr University Bochum, Center for Protein Diagnostics (ProDi), Biospectroscopy, Bochum, Germany. .,Ruhr University Bochum, Faculty of Biology and Biotechnology, Department of Biophysics, Bochum, Germany.
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10
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Abstract
Abstract
A potential role of optical technologies in medicine including micro-Raman spectroscopy is diagnosis of bacteria, cells and tissues which is covered in this chapter. The main advantage of Raman-based methods to complement and augment diagnostic tools is that unsurpassed molecular specificity is achieved without labels and in a nondestructive way. Principles and applications of micro-Raman spectroscopy in the context of medicine will be described. First, Raman spectra of biomolecules representing proteins, nucleic acids, lipids and carbohydrates are introduced. Second, microbial applications are summarized with the focus on typing on species and strain level, detection of infections, antibiotic resistance and biofilms. Third, cytological applications are presented to classify single cells and study cell metabolism and drug–cell interaction. Fourth, applications to tissue characterization start with discussion of lateral resolution for Raman imaging followed by Raman-based detection of pathologies and combination with other modalities. Finally, an outlook is given to translate micro-Raman spectroscopy as a clinical tool to solve unmet needs in point-of-care applications and personalized treatment of diseases.
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11
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Balan V, Mihai CT, Cojocaru FD, Uritu CM, Dodi G, Botezat D, Gardikiotis I. Vibrational Spectroscopy Fingerprinting in Medicine: from Molecular to Clinical Practice. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E2884. [PMID: 31489927 PMCID: PMC6766044 DOI: 10.3390/ma12182884] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/01/2019] [Accepted: 09/03/2019] [Indexed: 12/12/2022]
Abstract
In the last two decades, Fourier Transform Infrared (FTIR) and Raman spectroscopies turn out to be valuable tools, capable of providing fingerprint-type information on the composition and structural conformation of specific molecular species. Vibrational spectroscopy's multiple features, namely highly sensitive to changes at the molecular level, noninvasive, nondestructive, reagent-free, and waste-free analysis, illustrate the potential in biomedical field. In light of this, the current work features recent data and major trends in spectroscopic analyses going from in vivo measurements up to ex vivo extracted and processed materials. The ability to offer insights into the structural variations underpinning pathogenesis of diseases could provide a platform for disease diagnosis and therapy effectiveness evaluation as a future standard clinical tool.
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Affiliation(s)
- Vera Balan
- Faculty of Medical Bioengineering, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Cosmin-Teodor Mihai
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Florina-Daniela Cojocaru
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Cristina-Mariana Uritu
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Gianina Dodi
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Doru Botezat
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania.
| | - Ioannis Gardikiotis
- Advanced Centre for Research-Development in Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iași, Iași 700115, Romania
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12
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Multivariate Statistical Analysis of Surface Enhanced Raman Spectra of Human Serum for Alzheimer’s Disease Diagnosis. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163256] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Alzheimer’s disease (AD) is the most common form of dementia worldwide and is characterized by progressive cognitive decline. Along with being incurable and lethal, AD is difficult to diagnose with high levels of accuracy. Blood serum from Alzheimer’s disease (AD) patients was analyzed by surface-enhanced Raman spectroscopy (SERS) coupled with multivariate statistical analysis. The obtained spectra were compared with spectra from healthy controls (HC) to develop a simple test for AD detection. Serum spectra from AD patients were further compared to spectra from patients with other neurodegenerative dementias (OD). Colloidal silver nanoparticles (AgNPs) were used as the SERS-active substrates. Classification experiments involving serum SERS spectra using artificial neural networks (ANNs) achieved a diagnostic sensitivity around 96% for differentiating AD samples from HC samples in a binary model and 98% for differentiating AD, HC, and OD samples in a tertiary model. The results from this proof-of-concept study demonstrate the great potential of SERS blood serum analysis to be developed further into a novel clinical assay for the effective and accurate diagnosis of AD.
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13
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Kepenek ES, Gozen AG, Severcan F. Molecular characterization of acutely and gradually heavy metal acclimated aquatic bacteria by FTIR spectraoscopy. JOURNAL OF BIOPHOTONICS 2019; 12:e201800301. [PMID: 30578608 DOI: 10.1002/jbio.201800301] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/11/2018] [Accepted: 12/19/2018] [Indexed: 05/28/2023]
Abstract
In the environment, bacteria can be exposed to the concentration gradient of toxic heavy metals (gradual) or sudden high concentration of them (acute). In both situations, bacteria get acclimated to toxic heavy metal concentrations. Acclimation causes metabolic and molecular changes in bacteria. In this study, we aimed to understand whether there are differences between molecular profiles of the bacteria (Brevundimonas, Gordonia and Microbacterium) which are under acute or gradual exposure to cadmium or lead by using ATR-FTIR spectroscopy. Our results revealed the differences between the acclimation groups in membrane dynamics including changes in the structure and composition of the membrane lipids and proteins. Furthermore, protein concentrations decreased in acclimated bacterial groups. Also, a remarkable increase in exopolymer production occurred in acclimated groups. Interestingly, bacteria under acute cadmium exposure produced the significantly higher amount of exopolymer than they did under gradual exposure. On the contrary, under lead exposure gradually acclimate strains produced significantly higher amounts of exopolymer than those of acutely acclimated ones. This information can be used in bioremediation studies to obtain bacterial strains producing a higher amount of exopolymer.
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Affiliation(s)
- Eda S Kepenek
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey
| | - Ayse G Gozen
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey
| | - Feride Severcan
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey
- Department of Biophysics, Faculty of Medicine, Istanbul Altınbas University, Istanbul, Turkey
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14
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Dugandžić V, Drikermann D, Ryabchykov O, Undisz A, Vilotijević I, Lorkowski S, Bocklitz TW, Matthäus C, Weber K, Cialla-May D, Popp J. Surface enhanced Raman spectroscopy-detection of the uptake of mannose-modified nanoparticles by macrophages in vitro: A model for detection of vulnerable atherosclerotic plaques. JOURNAL OF BIOPHOTONICS 2018; 11:e201800013. [PMID: 29799670 DOI: 10.1002/jbio.201800013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Atherosclerosis is a process of thickening and stiffening of the arterial walls through the accumulation of lipids and fibrotic material, as a consequence of aging and unhealthy life style. However, not all arterial plaques lead to complications, which can lead to life-threatening events such as stroke and myocardial infarction. Diagnosis of the disease in early stages and identification of unstable atherosclerotic plaques are still challenging. It has been shown that the development of atherosclerotic plaques is an inflammatory process, where the accumulation of macrophages in the arterial walls is immanent in the early as well as late stages of the disease. We present a novel surface enhanced Raman spectroscopy (SERS)-based strategy for the detection of early stage atherosclerosis, based on the uptake of tagged gold nanoparticles by macrophages and subsequent detection by means of SERS. The results presented here provide a basis for future in vivo studies in animal models.The workflow of tracing the SERS-active nanoparticle uptake by macrophages employing confocal Raman imaging.
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Affiliation(s)
- Vera Dugandžić
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Denis Drikermann
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany
| | - Oleg Ryabchykov
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Andreas Undisz
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Jena, Germany
| | - Ivan Vilotijević
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany
| | - Stefan Lorkowski
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Institute of Nutrition, Friedrich Schiller University Jena, Jena, Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany
- Jena Centre for Soft Matter, (JCSM), Friedrich Schiller University Jena, Jena, Germany
| | - Thomas W Bocklitz
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Christian Matthäus
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Karina Weber
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Jena Centre for Soft Matter, (JCSM), Friedrich Schiller University Jena, Jena, Germany
| | - Dana Cialla-May
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Jena, Germany
- Leibniz Institute of Photonic Technology, Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Jena Centre for Soft Matter, (JCSM), Friedrich Schiller University Jena, Jena, Germany
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15
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Lipiec E, Wood BR, Kulik A, Kwiatek WM, Dietler G. Nanoscale Investigation into the Cellular Response of Glioblastoma Cells Exposed to Protons. Anal Chem 2018; 90:7644-7650. [PMID: 29799188 DOI: 10.1021/acs.analchem.8b01497] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Exposure to ionizing radiation can induce cellular defense mechanisms including cell activation and rapid proliferation prior to metastasis and in extreme cases can result in cell death. Herewith we apply infrared nano- and microspectroscopy combined with multidimensional data analysis to characterize the effect of ionizing radiation on single glioblastoma nuclei isolated from cells treated with 10 Gy of X-rays or 1 and 10 Gy of protons. We observed chromatin fragmentation related to the formation of apoptotic bodies following X-ray exposure. Following proton irradiation we detected evidence of a DNA conformational change (B-DNA to A-DNA transition) related to DNA repair and accompanied by an increase in protein content related to the synthesis of peptide enzymes involved in DNA repair. We also show that proton exposure can increase cholesterol and sterol ester synthesis, which are important lipids involved in the metastatic process changing the fluidity of the cellular membrane in preparation for rapid proliferation.
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Affiliation(s)
- Ewelina Lipiec
- Institute of Nuclear Physics , Polish Academy of Sciences , PL-31342 Krakow , Poland.,Institute of Physics, Laboratory of Physics of Living Matter , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland.,Centre for Biospectroscopy and School of Chemistry , Monash University , 3800 Clayton , Victoria , Australia
| | - Bayden R Wood
- Centre for Biospectroscopy and School of Chemistry , Monash University , 3800 Clayton , Victoria , Australia
| | - Andrzej Kulik
- Institute of Physics, Laboratory of Physics of Living Matter , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Wojciech M Kwiatek
- Institute of Nuclear Physics , Polish Academy of Sciences , PL-31342 Krakow , Poland
| | - Giovanni Dietler
- Institute of Physics, Laboratory of Physics of Living Matter , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
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16
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Yan S, Cui S, Ke K, Zhao B, Liu X, Yue S, Wang P. Hyperspectral Stimulated Raman Scattering Microscopy Unravels Aberrant Accumulation of Saturated Fat in Human Liver Cancer. Anal Chem 2018; 90:6362-6366. [PMID: 29757615 DOI: 10.1021/acs.analchem.8b01312] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Lipid metabolism is dysregulated in human cancers. The analytical tools that could identify and quantitatively map metabolites in unprocessed human tissues with submicrometer resolution are highly desired. Here, we implemented analytical hyperspectral stimulated Raman scattering microscopy to map the lipid metabolites in situ in normal and cancerous liver tissues from 24 patients. In contrast to the conventional wisdom that unsaturated lipid accumulation enhances tumor cell survival and proliferation, we unexpectedly visualized substantial amount of saturated fat accumulated in cancerous liver tissues, which was not seen in majority of their adjacent normal tissues. Further analysis by mass spectrometry confirmed significant high levels of glyceryl tripalmitate specifically in cancerous liver. These findings suggest that the aberrantly accumulated saturated fat may have great potential to be a metabolic biomarker for liver cancer.
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Affiliation(s)
- Shuai Yan
- MoE Key Laboratory for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , 430074 , China
| | - Sishan Cui
- School of Biological Science and Medical Engineering, Beijing Advanced Innovation Center for Biomedical Engineering , Beihang University , Beijing , 100083 , China
| | - Kun Ke
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province , Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , 350025 , China
| | - Bixing Zhao
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province , Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , 350025 , China
| | - Xiaolong Liu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province , Mengchao Hepatobiliary Hospital of Fujian Medical University , Fuzhou , 350025 , China
| | - Shuhua Yue
- School of Biological Science and Medical Engineering, Beijing Advanced Innovation Center for Biomedical Engineering , Beihang University , Beijing , 100083 , China
| | - Ping Wang
- MoE Key Laboratory for Biomedical Photonics , Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology , Wuhan , 430074 , China
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17
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Wrobel TP, Bhargava R. Infrared Spectroscopic Imaging Advances as an Analytical Technology for Biomedical Sciences. Anal Chem 2018; 90:1444-1463. [PMID: 29281255 PMCID: PMC6421863 DOI: 10.1021/acs.analchem.7b05330] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Tomasz P. Wrobel
- Beckman Institute for Advanced Science and Technology, Urbana, Illinois 61801, United States
| | - Rohit Bhargava
- Beckman Institute for Advanced Science and Technology, Urbana, Illinois 61801, United States
- Departments of Bioengineering, Electrical and Computer Engineering, Mechanical Science and Engineering, Chemical and Biomolecular Engineering, and Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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18
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Matthäus C, Dochow S, Egodage KD, Romeike BF, Brehm BR, Popp J. Detection and characterization of early plaque formations by Raman probe spectroscopy and optical coherence tomography: an in vivo study on a rabbit model. JOURNAL OF BIOMEDICAL OPTICS 2018; 23:1-6. [PMID: 29318812 DOI: 10.1117/1.jbo.23.1.015004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 12/15/2017] [Indexed: 05/22/2023]
Abstract
Intravascular imaging techniques provide detailed specification about plaque appearance and morphology, but cannot deliver information about the biochemical composition of atherosclerotic plaques. As the biochemical composition is related to the plaque type, important aspects such as the risk of a plaque rupture and treatment are still difficult to assess. Currently, various spectroscopic techniques are tested for potential applications for the chemical analysis of plaque depositions. Here, we employ Raman spectroscopy in combination with optical coherence tomography (OCT) for the characterization of plaques on rabbits in vivo. Experiments were carried out on New Zealand white rabbits treated with a fat- and cholesterol-enriched diet, using a Raman probe setup with a 785-nm multimode laser as an excitation source. Subsequently, OCT images were acquired with a swept source at 1305±55 nm at 22.6 mW. Raman spectra were recorded from normal regions and regions with early plaque formations. The probe positioning was monitored by x-ray angiography. The spectral information identified plaque depositions consisting of lipids, with triglycerides as the major component. Afterward, OCT images of the spectroscopically investigated areas were obtained. The spectral information correlates well with the observed intravascular morphology and is in good agreement with histology. Raman spectroscopy can provide detailed biochemical specification of atherosclerotic plaques.
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Affiliation(s)
- Christian Matthäus
- Leibniz Institute of Photonic Technology, Jena, Germany
- Friedrich-Schiller-University, Institute of Physical Chemistry and Abbe Center of Photonics, Jena, Germany
| | - Sebastian Dochow
- Leibniz Institute of Photonic Technology, Jena, Germany
- Friedrich-Schiller-University, Institute of Physical Chemistry and Abbe Center of Photonics, Jena, Germany
| | - Kokila D Egodage
- Leibniz Institute of Photonic Technology, Jena, Germany
- Friedrich-Schiller-University, Institute of Physical Chemistry and Abbe Center of Photonics, Jena, Germany
| | - Bernd F Romeike
- Friedrich Schiller University, Institute of Pathology, Neuropathology Section, Jena, Germany
| | - Bernhard R Brehm
- Herz-Neuro-Center Bodensee, Cardiology, Kreuzlingen, Switzerland
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Jena, Germany
- Friedrich-Schiller-University, Institute of Physical Chemistry and Abbe Center of Photonics, Jena, Germany
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19
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Pacia MZ, Czamara K, Zebala M, Kus E, Chlopicki S, Kaczor A. Rapid diagnostics of liver steatosis by Raman spectroscopyviafiber optic probe: a pilot study. Analyst 2018; 143:4723-4731. [DOI: 10.1039/c8an00289d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Raman spectroscopyviafiber optic probes enables assessment of the liver condition and rapid quantification of liver steatosis, thus, this technique has the potential as a diagnostic tool.
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Affiliation(s)
- Marta Z. Pacia
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
- Faculty of Chemistry
| | - Krzysztof Czamara
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
- Faculty of Chemistry
| | - Magdalena Zebala
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
- Faculty of Chemistry
| | - Edyta Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
- Chair of Pharmacology
| | - Agnieszka Kaczor
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- 30-348 Krakow
- Poland
- Faculty of Chemistry
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20
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You AYF, Bergholt MS, St-Pierre JP, Kit-Anan W, Pence IJ, Chester AH, Yacoub MH, Bertazzo S, Stevens MM. Raman spectroscopy imaging reveals interplay between atherosclerosis and medial calcification in the human aorta. SCIENCE ADVANCES 2017; 3:e1701156. [PMID: 29226241 PMCID: PMC5721727 DOI: 10.1126/sciadv.1701156] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 11/09/2017] [Indexed: 05/21/2023]
Abstract
Medial calcification in the human aorta accumulates during aging and is known to be aggravated in several diseases. Atherosclerosis, another major cause of cardiovascular calcification, shares some common aggravators. However, the mechanisms of cardiovascular calcification remain poorly understood. To elucidate the relationship between medial aortic calcification and atherosclerosis, we characterized the cross-sectional distributions of the predominant minerals in aortic tissue, apatite and whitlockite, and the associated extracellular matrix. We also compared the cellular changes between atherosclerotic and nonatherosclerotic human aortic tissues. This was achieved through the development of Raman spectroscopy imaging methods that adapted algorithms to distinguish between the major biomolecules present within these tissues. We present a relationship between apatite, cholesterol, and triglyceride in atherosclerosis, with the relative amount of all molecules concurrently increased in the atherosclerotic plaque. Further, the increase in apatite was disproportionately large in relation to whitlockite in the aortic media directly underlying a plaque, indicating that apatite is more pathologically significant in atherosclerosis-aggravated medial calcification. We also discovered a reduction of β-carotene in the whole aortic intima, including a plaque in atherosclerotic aortic tissues compared to nonatherosclerotic tissues. This unprecedented biomolecular characterization of the aortic tissue furthers our understanding of pathological and physiological cardiovascular calcification events in humans.
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Affiliation(s)
- Amanda Y. F. You
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Mads S. Bergholt
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Jean-Philippe St-Pierre
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Worrapong Kit-Anan
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Isaac J. Pence
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - Adrian H. Chester
- National Heart and Lung Institute, Harefield Heart Science Centre, Imperial College London, Harefield, Middlesex UB9 6JH, UK
| | - Magdi H. Yacoub
- National Heart and Lung Institute, Harefield Heart Science Centre, Imperial College London, Harefield, Middlesex UB9 6JH, UK
| | - Sergio Bertazzo
- Department of Medical Physics and Biomedical Engineering, University College London, Malet Place Engineering Building, London WC1E 6BT, UK
| | - Molly M. Stevens
- Department of Materials, Imperial College London, London SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
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21
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MacRitchie N, Grassia G, Noonan J, Garside P, Graham D, Maffia P. Molecular imaging of atherosclerosis: spotlight on Raman spectroscopy and surface-enhanced Raman scattering. Heart 2017; 104:460-467. [PMID: 29061690 PMCID: PMC5861389 DOI: 10.1136/heartjnl-2017-311447] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/25/2017] [Accepted: 09/25/2017] [Indexed: 01/03/2023] Open
Abstract
To accurately predict atherosclerotic plaque progression, a detailed phenotype of the lesion at the molecular level is required. Here, we assess the respective merits and limitations of molecular imaging tools. Clinical imaging includes contrast-enhanced ultrasound, an inexpensive and non-toxic technique but with poor sensitivity. CT benefits from high spatial resolution but poor sensitivity coupled with an increasing radiation burden that limits multiplexing. Despite high sensitivity, positron emission tomography and single-photon emission tomography have disadvantages when applied to multiplex molecular imaging due to poor spatial resolution, signal cross talk and increasing radiation dose. In contrast, MRI is non-toxic, displays good spatial resolution but poor sensitivity. Preclinical techniques include near-infrared fluorescence (NIRF), which provides good spatial resolution and sensitivity; however, multiplexing with NIRF is limited, due to photobleaching and spectral overlap. Fourier transform infrared spectroscopy and Raman spectroscopy are label-free techniques that detect molecules based on the vibrations of chemical bonds. Both techniques offer fast acquisition times with Raman showing superior spatial resolution. Raman signals are inherently weak; however, leading to the development of surface-enhanced Raman spectroscopy (SERS) that offers greatly increased sensitivity due to using metallic nanoparticles that can be functionalised with biomolecules targeted against plaque ligands while offering high multiplexing potential. This asset combined with high spatial resolution makes SERS an exciting prospect as a diagnostic tool. The ongoing refinements of SERS technologies such as deep tissue imaging and portable systems making SERS a realistic prospect for translation to the clinic.
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Affiliation(s)
- Neil MacRitchie
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.,British Society for Cardiovascular Research, UK
| | - Gianluca Grassia
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Jonathan Noonan
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.,British Society for Cardiovascular Research, UK
| | - Paul Garside
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Duncan Graham
- Centre for Molecular Nanometrology, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Pasquale Maffia
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.,British Society for Cardiovascular Research, UK.,Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.,Department of Pharmacy, University of Naples Federico II, Naples, Italy
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22
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Cao Y, Kole A, Lan L, Wang P, Hui J, Sturek M, Cheng JX. Spectral analysis assisted photoacoustic imaging for lipid composition differentiation. PHOTOACOUSTICS 2017. [PMID: 28649497 PMCID: PMC5472148 DOI: 10.1016/j.pacs.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Recent advances in atherosclerotic plaque detection have shown that not only does lipid core size and depth play important roles in plaque rupture and thrombi formation, but lipid composition, especially cholesterol deposition, is equally important in determining lesion vulnerability. Here, we demonstrate a spectral analysis assisted photoacoustic imaging approach to differentiate and map lipid compositions within an artery wall. The approach is based on the classification of spectral curves obtained from the sliding windows along time-of-flight photoacoustic signals via a numerical k-means clustering method. The evaluation result on a vessel-mimicking phantom containing cholesterol and olive oil shows accuracy and efficiency of this method, suggesting the potential to apply this approach in assessment of atherosclerotic plaques.
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Affiliation(s)
- Yingchun Cao
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Ayeeshik Kole
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Lu Lan
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Pu Wang
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Jie Hui
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
| | - Michael Sturek
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
- Corresponding author at: Weldon School of Biomedical Engineering, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907, USA.
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23
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Summers KL, Fimognari N, Hollings A, Kiernan M, Lam V, Tidy RJ, Paterson D, Tobin MJ, Takechi R, George GN, Pickering IJ, Mamo JC, Harris HH, Hackett MJ. A Multimodal Spectroscopic Imaging Method To Characterize the Metal and Macromolecular Content of Proteinaceous Aggregates (“Amyloid Plaques”). Biochemistry 2017; 56:4107-4116. [DOI: 10.1021/acs.biochem.7b00262] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kelly L. Summers
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Nicholas Fimognari
- School
of Biomedical Sciences, Curtin University, Bentley, Western Australia 6102, Australia
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
| | - Ashley Hollings
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - Mitchell Kiernan
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - Virginie Lam
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Rebecca J. Tidy
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
| | - David Paterson
- Australian Synchrotron, Clayton, Victoria 3068, Australia
| | - Mark J. Tobin
- Australian Synchrotron, Clayton, Victoria 3068, Australia
| | - Ryu Takechi
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Graham N. George
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Ingrid J. Pickering
- Molecular
and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - John C. Mamo
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- School of
Public Health, Curtin University, Bentley, Western Australia 6102, Australia
| | - Hugh H. Harris
- Department
of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Mark J. Hackett
- Curtin
Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Department
of Chemistry, Curtin University, GPO Box U1987, Bentley, Western Australia 6845, Australia
- Curtin Institute
of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6845, Australia
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24
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Krafft C, Schmitt M, Schie IW, Cialla-May D, Matthäus C, Bocklitz T, Popp J. Markerfreie molekulare Bildgebung biologischer Zellen und Gewebe durch lineare und nichtlineare Raman-spektroskopische Ansätze. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201607604] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Christoph Krafft
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
| | - Michael Schmitt
- Institut für Physikalische Chemie und Abbe Center of Photonics; Friedrich-Schiller-Universität Jena; Helmholtzweg 4 07743 Jena Deutschland
| | - Iwan W. Schie
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
| | - Dana Cialla-May
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie und Abbe Center of Photonics; Friedrich-Schiller-Universität Jena; Helmholtzweg 4 07743 Jena Deutschland
| | - Christian Matthäus
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie und Abbe Center of Photonics; Friedrich-Schiller-Universität Jena; Helmholtzweg 4 07743 Jena Deutschland
| | - Thomas Bocklitz
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie und Abbe Center of Photonics; Friedrich-Schiller-Universität Jena; Helmholtzweg 4 07743 Jena Deutschland
| | - Jürgen Popp
- Leibniz-Institut für Photonische Technologien; Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie und Abbe Center of Photonics; Friedrich-Schiller-Universität Jena; Helmholtzweg 4 07743 Jena Deutschland
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25
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Krafft C, Schmitt M, Schie IW, Cialla-May D, Matthäus C, Bocklitz T, Popp J. Label-Free Molecular Imaging of Biological Cells and Tissues by Linear and Nonlinear Raman Spectroscopic Approaches. Angew Chem Int Ed Engl 2017; 56:4392-4430. [PMID: 27862751 DOI: 10.1002/anie.201607604] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/04/2016] [Indexed: 12/20/2022]
Abstract
Raman spectroscopy is an emerging technique in bioanalysis and imaging of biomaterials owing to its unique capability of generating spectroscopic fingerprints. Imaging cells and tissues by Raman microspectroscopy represents a nondestructive and label-free approach. All components of cells or tissues contribute to the Raman signals, giving rise to complex spectral signatures. Resonance Raman scattering and surface-enhanced Raman scattering can be used to enhance the signals and reduce the spectral complexity. Raman-active labels can be introduced to increase specificity and multimodality. In addition, nonlinear coherent Raman scattering methods offer higher sensitivities, which enable the rapid imaging of larger sampling areas. Finally, fiber-based imaging techniques pave the way towards in vivo applications of Raman spectroscopy. This Review summarizes the basic principles behind medical Raman imaging and its progress since 2012.
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Affiliation(s)
- Christoph Krafft
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Michael Schmitt
- Institut für Physikalische Chemie und Abbe Center für Photonics, Friedrich Schiller Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Iwan W Schie
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Dana Cialla-May
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Institut für Physikalische Chemie und Abbe Center für Photonics, Friedrich Schiller Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Christian Matthäus
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Institut für Physikalische Chemie und Abbe Center für Photonics, Friedrich Schiller Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Thomas Bocklitz
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Institut für Physikalische Chemie und Abbe Center für Photonics, Friedrich Schiller Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Jürgen Popp
- Leibniz-Institut für Photonische Technologien, Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Institut für Physikalische Chemie und Abbe Center für Photonics, Friedrich Schiller Universität Jena, Helmholtzweg 4, 07743, Jena, Germany
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26
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Jurowski K, Kochan K, Walczak J, Barańska M, Piekoszewski W, Buszewski B. Analytical Techniques in Lipidomics: State of the Art. Crit Rev Anal Chem 2017; 47:418-437. [PMID: 28340309 DOI: 10.1080/10408347.2017.1310613] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Current studies related to lipid identification and determination, or lipidomics in biological samples, are one of the most important issues in modern bioanalytical chemistry. There are many articles dedicated to specific analytical strategies used in lipidomics in various kinds of biological samples. However, in such literature, there is a lack of articles dedicated to a comprehensive review of the actual analytical methodologies used in lipidomics. The aim of this article is to characterize the lipidomics methods used in modern bioanalysis according to the methodological point of view: (1) chromatography/separation methods, (2) spectroscopic methods and (3) mass spectrometry and also hyphenated methods. In the first part, we discussed thin layer chromatography (TLC), high-pressure liquid chromatography (HPLC), gas chromatography (GC) and capillary electrophoresis (CE). The second part includes spectroscopic techniques such as Raman spectroscopy (RS), Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR). The third part is a synthetic review of mass spectrometry, matrix-assisted laser desorption/ionization (MALDI), hyphenated methods, which include liquid chromatography-mass spectrometry (LC-MS), gas chromatography-mass spectrometry (GC-MS) and also multidimensional techniques. Other aspects are the possibilities of the application of the described methods in lipidomics studies. Due to the fact that the exploration of new methods of lipidomics analysis and their applications in clinical and medical studies are still challenging for researchers working in life science, we hope that this review article will be very useful for readers.
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Affiliation(s)
- Kamil Jurowski
- a Kraków Higher School of Health Promotion , Krakow , Poland
| | - Kamila Kochan
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,c Centre for Biospectroscopy and School of Chemistry , Monash University , Clayton , Victoria , Australia
| | - Justyna Walczak
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
| | - Małgorzata Barańska
- b Jagiellonian Centre for Experimental Therapeutics (JCET) , Jagiellonian University in Cracow , Cracow , Poland.,e Department of Chemical Physics, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland
| | - Wojciech Piekoszewski
- f Department of Analytical Chemistry, Faculty of Chemistry , Jagiellonian University in Cracow , Cracow , Poland.,g School of Biomedicine , Far Eastern Federal University , Vladivostok , Russia
| | - Bogusław Buszewski
- d Department of Environmental Chemistry and Bioanalytics , Faculty of Chemistry, Nicolaus Copernicus University , Torun , Poland
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27
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Dybas J, Marzec KM, Pacia MZ, Kochan K, Czamara K, Chrabaszcz K, Staniszewska-Slezak E, Malek K, Baranska M, Kaczor A. Raman spectroscopy as a sensitive probe of soft tissue composition – Imaging of cross-sections of various organs vs. single spectra of tissue homogenates. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.08.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Uchida Y, Uchida Y, Hiruta N, Shirai S, Yoshida T. Imaging of Triglycerides in Human Coronary Plaques by Color Fluorescent Angioscopy and Microscopy. Am J Cardiol 2016; 118:1306-1310. [PMID: 27614848 DOI: 10.1016/j.amjcard.2016.07.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 07/28/2016] [Accepted: 07/28/2016] [Indexed: 12/01/2022]
Abstract
Native triglycerides (TG) deposited in the human vascular wall is not measurable or visible in vivo to date. We discovered that by exciting fluorescence at 345 nm and emitting at 420 nm, 3-amino-4-hydroxy-5-nitrobenzene sulfonic acid monohydrate (3-ANA) elicits a brown fluorescence that is characteristic of just TG. Therefore, localization of TG in coronary plaques and normal segments that were obtained from 19 human autopsy cases was examined by color fluorescent angioscopy (CFA) and microscopy using 3-ANA as a biomarker of TG. By CFA, the percentage (%) incidence of TG in 23 normal segments, 13 white plaques without lipid deposition, 18 white plaques (growth stage) with lipid deposition, 11 yellow plaques without necrotic core (mature stage), and 12 yellow plaques with necrotic core (advanced mature stage) was 95, 92, 50, 27, and 25, respectively. By color fluorescent microscopy, TG deposited mostly in the fibrotic area of the plaques. Contrary to the general belief that TG amount increases with plaque maturation, the results indicated that TG was deposited in most of the normal coronary segments, but the amount decreased with plaque maturation. If 3-ANA becomes applicable clinically, the CFA system could be used for imaging TG within coronary plaques in patients in vivo.
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Affiliation(s)
- Yasumi Uchida
- Japan Foundation for Cardiovascular Research, Funabashi, Japan; Department of Cardiology, Tokyo Jikei University School of Medicine, Tokyo, Japan.
| | - Yasuto Uchida
- Department of Cardiology, Tsukuba Memorial Hospital, Tsukuba, Japan
| | - Nobuyuki Hiruta
- Department of Pathology, Toho University Sakura Medical Center, Sakura, Japan
| | - Seiichiro Shirai
- Department of Cardiology, Funabashi-Futawa Hospital, Funabashi, Japan
| | - Tomoe Yoshida
- Department of Otolaryngology, Toho University Sakura Medical Center, Sakura, Japan
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29
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Hepatic cirrhosis and recovery as reflected by Raman spectroscopy: information revealed by statistical analysis might lead to a prognostic biomarker. Anal Bioanal Chem 2016; 408:8053-8063. [DOI: 10.1007/s00216-016-9905-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/09/2016] [Accepted: 08/24/2016] [Indexed: 12/11/2022]
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30
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Dochow S, Fatakdawala H, Phipps JE, Ma D, Bocklitz T, Schmitt M, Bishop JW, Margulies KB, Marcu L, Popp J. Comparing Raman and fluorescence lifetime spectroscopy from human atherosclerotic lesions using a bimodal probe. JOURNAL OF BIOPHOTONICS 2016; 9:958-66. [PMID: 27003796 PMCID: PMC5012915 DOI: 10.1002/jbio.201500341] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 05/20/2023]
Abstract
Fluorescence lifetime imaging (FLIm) and Raman spectroscopy are two promising methods to support morphological intravascular imaging techniques with chemical contrast. Both approaches are complementary and may also be used in combination with OCT/IVUS to add chemical specificity to these morphologic intravascular imaging modalities. In this contribution, both modalities were simultaneously acquired from two human coronary specimens using a bimodal probe. A previously trained SVM model was used to interpret the fluorescence lifetime data; integrated band intensities displayed in RGB false color images were used to interpret the Raman data. Both modalities demonstrate unique strengths and weaknesses and these will be discussed in comparison to histologic analyses from the two coronary arteries imaged.
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Affiliation(s)
- Sebastian Dochow
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Hussain Fatakdawala
- Department of Biomedical Engineering, University of California, Davis, 451 E. Health Sciences Drive, Davis, CA 95616, USA
| | - Jennifer E Phipps
- Department of Biomedical Engineering, University of California, Davis, 451 E. Health Sciences Drive, Davis, CA 95616, USA
| | - Dinglong Ma
- Department of Biomedical Engineering, University of California, Davis, 451 E. Health Sciences Drive, Davis, CA 95616, USA
| | - Thomas Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - John W Bishop
- Department of Pathology & Laboratory Medicine, University of California Davis Medical Center, Davis, CA, USA
| | - Kenneth B Margulies
- Cardiovascular Institute, Perelman School of Medicine, , University of Pennsylvania, Philadelphia, PA, USA
| | - Laura Marcu
- Department of Biomedical Engineering, University of California, Davis, 451 E. Health Sciences Drive, Davis, CA 95616, USA.
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.
- Leibniz Institute of Photonic Technology Jena e.V., Albert-Einstein-Str. 9, 07745, Jena, Germany.
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31
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Caine S, Hackett MJ, Hou H, Kumar S, Maley J, Ivanishvili Z, Suen B, Szmigielski A, Jiang Z, Sylvain NJ, Nichol H, Kelly ME. A novel multi-modal platform to image molecular and elemental alterations in ischemic stroke. Neurobiol Dis 2016; 91:132-42. [DOI: 10.1016/j.nbd.2016.03.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/13/2016] [Accepted: 03/07/2016] [Indexed: 02/06/2023] Open
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32
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Smith R, Wright KL, Ashton L. Raman spectroscopy: an evolving technique for live cell studies. Analyst 2016; 141:3590-600. [PMID: 27072718 DOI: 10.1039/c6an00152a] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
One of the most exciting developments in Raman spectroscopy in the last decade has been its application to cells and tissues for diagnostic and pharmaceutical applications, and in particular its use in the analysis of cellular dynamics. Raman spectroscopy is rapidly advancing as a cell imaging method that overcomes many of the limitations of current techniques and is earning its place as a routine tool in cell biology. In this review we focus on important developments in Raman spectroscopy that have evolved into the exciting technique of live-cell Raman microscopy and highlight some of the most recent and significant applications to cell biology.
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Affiliation(s)
- Rachael Smith
- Department of Chemistry, Lancaster University, LA1 4YG, UK.
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33
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Melzer S, Ankri R, Fixler D, Tarnok A. Nanoparticle uptake by macrophages in vulnerable plaques for atherosclerosis diagnosis. JOURNAL OF BIOPHOTONICS 2015; 8:871-83. [PMID: 26110589 DOI: 10.1002/jbio.201500114] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 05/11/2015] [Accepted: 06/03/2015] [Indexed: 05/11/2023]
Abstract
The composition of atherosclerotic (AS) plaques is crucial concerning rupture, thrombosis and clinical events. Two plaque types are distinguished: stable and vulnerable plaques. Vulnerable plaques are rich in inflammatory cells, mostly only M1 macrophages, and are highly susceptible to rupture. These plaques represent a high risk particularly with the standard invasive diagnosis by coronary angiography. So far there are no non-invasive low-risk clinical approaches available to detect and distinguish AS plaque types in vivo. The perspective review introduces a whole work-flow for a novel approach for non-invasive detection and classification of AS plaques using the diffusion reflection method with gold nanoparticle loaded macrophages in combination with flow and image cytometric analysis for quality assurance. Classical biophotonic methods for AS diagnosis are summarized. Phenotyping of monocytes and macrophages are discussed for specific subset labelling by nanomaterials, as well as existing studies and first experimental proofs of concept for the novel approach are shown. In vitro and in vivo detection of NP loaded macrophages (MΦ). Different ways of MΦ labelling include (1) in vitro labelling in suspension (whole blood or buffy coat) or (2) labelling of short-term MΦ cultures with re-injection of MΦ-NP into the animal to detect migration of the cells in the plaques and (3) in vivo injection of NP into the organism.
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Affiliation(s)
- Susanne Melzer
- LIFE Leipziger Forschungszentrum für Zivilisationserkrankungen, Universität Leipzig, Leipzig, Germany
- Department of Pediatric Cardiology, Cardiac Center GmbH, University of Leipzig, Leipzig, Germany
| | - Rinat Ankri
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Dror Fixler
- Faculty of Engineering and Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Attila Tarnok
- Department of Pediatric Cardiology, Cardiac Center GmbH, University of Leipzig, Leipzig, Germany.
- Translational Centre for Regenerative Medicine (TRM) Leipzig, Leipzig, Germany.
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Effects of Low Carbohydrate High Protein (LCHP) diet on atherosclerotic plaque phenotype in ApoE/LDLR-/- mice: FT-IR and Raman imaging. Sci Rep 2015; 5:14002. [PMID: 26391802 PMCID: PMC4585723 DOI: 10.1038/srep14002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 08/03/2015] [Indexed: 11/09/2022] Open
Abstract
Low Carbohydrate High Protein (LCHP) diet displays pro-atherogenic effects, however, the exact mechanisms involved are still unclear. Here, with the use of vibrational imaging, such as Fourier transform infrared (FT-IR) and Raman (RS) spectroscopies, we characterize biochemical content of plaques in Brachiocephalic Arteries (BCA) from ApoE/LDLR(-/-) mice fed LCHP diet as compared to control, recomended by American Institute of Nutrition, AIN diet. FT-IR images were taken from 6-10 sections of BCA from each mice and were complemented with RS measurements with higher spatial resolution of chosen areas of plaque sections. In aortic plaques from LCHP fed ApoE/LDLR(-/-) mice, the content of cholesterol and cholesterol esters was increased, while that of proteins was decreased as evidenced by global FT-IR analysis. High resolution imaging by RS identified necrotic core/foam cells, lipids (including cholesterol crystals), calcium mineralization and fibrous cap. The decreased relative thickness of the outer fibrous cap and the presence of buried caps were prominent features of the plaques in ApoE/LDLR(-/-) mice fed LCHP diet. In conclusion, FT-IR and Raman-based imaging provided a complementary insight into the biochemical composition of the plaque suggesting that LCHP diet increased plaque cholesterol and cholesterol esters contents of atherosclerotic plaque, supporting the cholesterol-driven pathogenesis of LCHP-induced atherogenesis.
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35
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Vascular diseases investigated ex vivo by using Raman, FT-IR and complementary methods. Pharmacol Rep 2015; 67:744-50. [DOI: 10.1016/j.pharep.2015.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 04/30/2015] [Accepted: 05/05/2015] [Indexed: 11/20/2022]
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36
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Huser T, Chan J. Raman spectroscopy for physiological investigations of tissues and cells. Adv Drug Deliv Rev 2015; 89:57-70. [PMID: 26144996 DOI: 10.1016/j.addr.2015.06.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 06/08/2015] [Accepted: 06/26/2015] [Indexed: 12/29/2022]
Abstract
Raman micro-spectroscopy provides a convenient non-destructive and location-specific means of probing cellular physiology and tissue physiology at sub-micron length scales. By probing the vibrational signature of molecules and molecular groups, the distribution and metabolic products of small molecules that cannot be labeled with fluorescent dyes can be analyzed. This method works well for molecular concentrations in the micro-molar range and has been demonstrated as a valuable tool for monitoring drug-cell interactions. If the small molecule of interest does not contain groups that would allow for a discrimination against cytoplasmic background signals, "labeling" of the molecule by isotope substitution or by incorporating other unique small groups, e.g. alkynes provides a stable signal even for time-lapse imaging such compounds in living cells. In this review we highlight recent progress in assessing the physiology of cells and tissue by Raman spectroscopy and imaging.
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37
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Combining multiset resolution and segmentation for hyperspectral image analysis of biological tissues. Anal Chim Acta 2015; 881:24-36. [DOI: 10.1016/j.aca.2015.04.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 04/24/2015] [Accepted: 04/28/2015] [Indexed: 11/19/2022]
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38
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Kochan K, Heraud P, Kiupel M, Yuzbasiyan-Gurkan V, McNaughton D, Baranska M, Wood BR. Comparison of FTIR transmission and transfection substrates for canine liver cancer detection. Analyst 2015; 140:2402-11. [DOI: 10.1039/c4an01901f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
FTIR spectroscopy is a widely used technique that provides insights into disease processes at the molecular level.
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Affiliation(s)
- Kamila Kochan
- Faculty of Chemistry
- Jagiellonian University
- Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Philip Heraud
- Centre for Biospectroscopy and School of Chemistry
- Monash University
- Victoria 3800
- Australia
- Multiple Sclerosis Research Group
| | - Matti Kiupel
- Diagnostic Center for Population and Animal Health
- Department of Pathobiology and Diagnostic Investigation
- Michigan State University
- Lansing
- USA
| | | | - Don McNaughton
- Centre for Biospectroscopy and School of Chemistry
- Monash University
- Victoria 3800
- Australia
| | - Malgorzata Baranska
- Faculty of Chemistry
- Jagiellonian University
- Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Bayden R. Wood
- Centre for Biospectroscopy and School of Chemistry
- Monash University
- Victoria 3800
- Australia
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39
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Lipidome of atherosclerotic plaques from hypercholesterolemic rabbits. Int J Mol Sci 2014; 15:23283-93. [PMID: 25517033 PMCID: PMC4284766 DOI: 10.3390/ijms151223283] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/09/2014] [Accepted: 12/10/2014] [Indexed: 01/25/2023] Open
Abstract
The cellular, macromolecular and neutral lipid composition of the atherosclerotic plaque has been extensively characterized. However, a comprehensive lipidomic analysis of the major lipid classes within atherosclerotic lesions has not been reported. The objective of this study was to produce a detailed framework of the lipids that comprise the atherosclerotic lesion of a widely used pre-clinical model of plaque progression. Male New Zealand White rabbits were administered regular chow supplemented with 0.5% cholesterol (HC) for 12 weeks to induce hypercholesterolemia and atherosclerosis. Our lipidomic analyses of plaques isolated from rabbits fed the HC diet, using ultra-performance liquid chromatography (UPLC) and high-resolution mass spectrometry, detected most of the major lipid classes including: Cholesteryl esters, triacylglycerols, phosphatidylcholines, sphingomyelins, diacylglycerols, fatty acids, phosphatidylserines, lysophosphatidylcholines, ceramides, phosphatidylglycerols, phosphatidylinositols and phosphatidylethanolamines. Given that cholesteryl esters, triacylglycerols and phosphatidylcholines comprise greater than 75% of total plasma lipids, we directed particular attention towards the qualitative and quantitative assessment of the fatty acid composition of these lipids. We additionally found that sphingomyelins were relatively abundant lipid class within lesions, and compared the abundance of sphingomyelins to their precursor phosphatidylcholines. The studies presented here are the first approach to a comprehensive characterization of the atherosclerotic plaque lipidome.
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40
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The many facets of Raman spectroscopy for biomedical analysis. Anal Bioanal Chem 2014; 407:699-717. [DOI: 10.1007/s00216-014-8311-9] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/20/2014] [Accepted: 10/31/2014] [Indexed: 12/13/2022]
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41
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Gourion-Arsiquaud S, Marcott C, Hu Q, Boskey AL. Studying variations in bone composition at nano-scale resolution: a preliminary report. Calcif Tissue Int 2014; 95:413-8. [PMID: 25155443 PMCID: PMC4192085 DOI: 10.1007/s00223-014-9909-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 08/12/2014] [Indexed: 01/25/2023]
Abstract
Bone has a hierarchical structure extending from the micrometer to the nanometer scale. We report here the first analysis of non-human primate osteonal bone obtained using a spectrometer coupled to an AFM microscope (AFM-IR), with a resolution of 50-100 nm. Average spectra correspond to those observed with conventional FTIR spectroscopy. The following validated FTIR parameters were calculated based on intensities observed in scans covering ~60 µm from the osteon center: mineral content (1030/1660 cm(-1)), crystallinity (1030/1020 cm(-1)), collagen maturity (1660/1690 cm(-1)), and acid phosphate content (1128/1096 cm(-1)). A repeating pattern was found in most of these calculated IR parameters corresponding to the reported inter- and intra-lamellar spacing in human bone, indicating that AFM-IR measurements will be able to provide novel compositional information on the variation in bone at the nanometer level.
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Marzec KM, Wrobel TP, Rygula A, Maslak E, Jasztal A, Fedorowicz A, Chlopicki S, Baranska M. Visualization of the biochemical markers of atherosclerotic plaque with the use of Raman, IR and AFM. JOURNAL OF BIOPHOTONICS 2014; 7:744-756. [PMID: 24604883 DOI: 10.1002/jbio.201400014] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 02/06/2014] [Indexed: 06/03/2023]
Abstract
In this work, we describe a methodology to visualize the biochemical markers of atherosclerotic plaque in cross sections of brachiocephalic arteries (BCA) taken from ApoE/LDLR(-/-) mice. The approach of the visualization of the same area of atherosclerotic plaque with the use of Raman, IR and AFM imaging enables the parallel characterisation of various features of atherosclerotic plaques. This support to the histochemical staining is utilized mainly in studies on mice models of atherosclerotic plaques, where micro and sub-micro resolutions are required. This work presents the methodology of the measurement and visualization of plaque features important for atherosclerosis development and plaques vulnerability analysis. Label-free imaging of cholesterol, cholesteryl esters, remodeled media, heme, internal elastic lamina, fibrous cap and calcification provides additional knowledge to previously presented quantitative measurements of average plaque features. AFM imaging enhanced the results obtained with the use of vibrational microspectroscopies with additional topographical information of the sample. To the best of our knowledge, this is the first work which demonstrates that co-localized measurement of atherosclerotic plaque with Raman, IR and AFM imaging provides a comprehensive insight into the biochemical markers of atherosclerotic plaques, and can be used as an integrated approach to assess vulnerability of the plaque.
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Affiliation(s)
- Katarzyna M Marzec
- Jagiellonian Centre for Experimental Therapeutics JCET, Jagiellonian University, 30-348, Krakow, Poland
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Pilarczyk M, Mateuszuk L, Rygula A, Kepczynski M, Chlopicki S, Baranska M, Kaczor A. Endothelium in spots--high-content imaging of lipid rafts clusters in db/db mice. PLoS One 2014; 9:e106065. [PMID: 25166908 PMCID: PMC4148353 DOI: 10.1371/journal.pone.0106065] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/29/2014] [Indexed: 11/18/2022] Open
Abstract
Lipid rafts (LRs) are dynamic, sterol- and sphingolipid-enriched nanodomains involved in the regulation of cellular functions and signal transduction, that upon stimuli, via (e.g. association of raft proteins and lipids), may cluster into domains of submicron or micron scale. Up to date, however, lipid raft clusters were observed only under artificially promoted conditions and their formation in vivo has not been confirmed. Using non-destructive approach involving Raman and Atomic Force Microscopy imaging we demonstrated the presence of clustered lipid rafts in endothelium of the aorta of the db/db mice that represent a reliable murine model of type 2 diabetes. The raft clusters in the aorta of diabetic mice were shown to occupy a considerably larger (about 10-fold) area of endothelial cells surface as compared to the control. Observation of pathology-promoted LRs confirms that the cellular increase of lipid content results in clustering of LRs. Clustering of LRs leads to the formation of assemblies with diameters up to 3 micrometers and increased lipid character. This massive clustering of lipid rafts in diabetes may trigger a signaling cascade leading to vascular inflammation.
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Affiliation(s)
- Marta Pilarczyk
- Faculty of Chemistry, Jagiellonian University, Krakow, Poland
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
| | - Lukasz Mateuszuk
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
| | - Anna Rygula
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
| | | | - Stefan Chlopicki
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
- Department of Experimental Pharmacology, Jagiellonian University, Krakow, Poland
| | - Malgorzata Baranska
- Faculty of Chemistry, Jagiellonian University, Krakow, Poland
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
| | - Agnieszka Kaczor
- Faculty of Chemistry, Jagiellonian University, Krakow, Poland
- Jagiellonian Centre of Experimental Therapeutics, Krakow, Poland
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44
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Stiebing C, Matthäus C, Krafft C, Keller AA, Weber K, Lorkowski S, Popp J. Complexity of fatty acid distribution inside human macrophages on single cell level using Raman micro-spectroscopy. Anal Bioanal Chem 2014; 406:7037-46. [PMID: 24939132 DOI: 10.1007/s00216-014-7927-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/26/2014] [Accepted: 05/26/2014] [Indexed: 12/12/2022]
Abstract
Macrophages are phagocytic cells which are involved in the non-specific immune defense. Lipid uptake and storage behavior of macrophages also play a key role in the development of atherosclerotic lesions within walls of blood vessels. The allocation of exogenous lipids such as fatty acids in the blood stream dictates the accumulation and quantity of lipids within macrophages. In case of an overexposure, macrophages transform into foam cells because of the large amount of lipid droplets in the cytoplasm. Raman micro-spectroscopy is a powerful tool for studying single cells due to the combination of microscopic imaging with spectral information. With a spatial resolution restricted by the diffraction limit, it is possible to visualize lipid droplets within macrophages. With stable isotopic labeling of fatty acids with deuterium, the uptake and storage of exogenously provided fatty acids can be investigated. In this study, we present the results of time-dependent Raman spectroscopic imaging of single THP-1 macrophages incubated with deuterated arachidonic acid. The polyunsaturated fatty acid plays an important role in the cellular signaling pathway as being the precursor of icosanoids. We show that arachidonic acid is stored in lipid droplets but foam cell formation is less pronounced as with other fatty acids. The storage efficiency in lipid droplets is lower than in cells incubated with deuterated palmitic acid. We validate our results with gas chromatography and gain information on the relative content of arachidonic acid and its metabolites in treated macrophages. These analyses also provide evidence that significant amounts of the intracellular arachidonic acid is elongated to adrenic acid but is not metabolized any further. The co-supplementation of deuterated arachidonic acid and deuterated palmitic acid leads to a non-homogenous storage pattern in lipid droplets within single cells.
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Affiliation(s)
- Clara Stiebing
- Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany
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Pavillon N, Hobro AJ, Smith NI. Cell optical density and molecular composition revealed by simultaneous multimodal label-free imaging. Biophys J 2014; 105:1123-32. [PMID: 24010655 DOI: 10.1016/j.bpj.2013.07.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/18/2013] [Accepted: 07/23/2013] [Indexed: 01/14/2023] Open
Abstract
We show how Raman imaging can be combined with independent but simultaneous phase measurements of unlabeled cells, with the resulting data providing information on how the light is retarded and/or scattered by molecules in the cell. We then show, for the first time to our knowledge, how the chemistry of the cell highlighted in the Raman information is related to the cell quantitative phase information revealed in digital holographic microscopy by quantifying how the two sets of spatial information are correlated. The results show that such a multimodal implementation is highly useful for the convenience of having video rate imaging of the cell during the entire Raman measurement time, allowing us to observe how the cell changes during Raman acquisition. More importantly, it also shows that the two sets of label-free data, which result from different scattering mechanisms, are complementary and can be used to interpret the composition and dynamics of the cell, where each mode supplies label-free information not available from the other mode.
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Affiliation(s)
- Nicolas Pavillon
- Biophotonics Laboratory, Immunology Frontier Research Center IFReC, Osaka University, Suita, Osaka, Japan.
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Kotiaho A, Myllyperkiö P, Pettersson M. Chemically Selective Imaging of Overlapping C–H Stretching Vibrations with Time-Resolved Coherent Anti-Stokes Raman Scattering (CARS) Microscopy. J Phys Chem B 2014; 118:4363-9. [DOI: 10.1021/jp5017642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anne Kotiaho
- Department of Chemistry, Nanoscience Center, University of Jyväskylä , P.O. Box 35, FI-40014 Jyväskylä, Finland
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Discrimination of prostate carcinoma from benign prostate tissue fragments in vitro by estimating the gross biochemical alterations through Raman spectroscopy. Lasers Med Sci 2014; 29:1469-77. [PMID: 24619139 DOI: 10.1007/s10103-014-1550-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
Abstract
Raman spectroscopy has been proposed for detecting biochemical alterations in prostate cancer (PrCa) compared to benign prostate tissue in in vitro fragments from surgery for diagnostic purposes. Freezer-stored fragments of human prostate tissues were unfrozen and submitted to Raman spectroscopy with a dispersive spectrometer (830-nm and 200-mW laser parameters, 30-s exposure time). Fragments were fixed and submitted to histopathology to grade PrCa according to Gleason score. A total of 160 spectra were taken from 32 samples (16 benign tissues and 16 PrCa tissues). The relative concentrations of selected biochemicals were estimated using a least-squares fitting model applied to the spectra of pure compounds and the tissue spectrum. A discrimination model was developed employing the most statistically relevant compounds with capability of separating PrCa from benign tissues. The fitting model revealed that actin, hemoglobin, elastin, phosphatidylcholine, and water are the most important biochemicals to discriminate prostate depending on the Gleason score. A discrimination based on Euclidean distance using the relative concentrations of phosphatidylcholine and water showed the higher accuracy of 74 % to discriminate PrCa from benign tissue. Raman spectroscopy is an analytical technique with possibility for identifying biochemical constitution of prostate and could be used for diagnostic purposes.
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Johnson JL, van Wijk K, Sabick M. Characterizing phantom arteries with multi-channel laser ultrasonics and photo-acoustics. ULTRASOUND IN MEDICINE & BIOLOGY 2014; 40:513-520. [PMID: 24412169 DOI: 10.1016/j.ultrasmedbio.2013.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 09/07/2013] [Accepted: 10/08/2013] [Indexed: 06/03/2023]
Abstract
Multi-channel photo-acoustic and laser ultrasonic waves are used to sense the characteristics of proxies for healthy and diseased vessels. The acquisition system is non-contacting and non-invasive with a pulsed laser source and a laser vibrometer detector. As the wave signatures of our targets are typically low in amplitude, we exploit multi-channel acquisition and processing techniques. These are commonly used in seismology to improve the signal-to-noise ratio of data. We identify vessel proxies with a diameter on the order of 1 mm, at a depth of 18 mm. Variations in scattered and photo-acoustic signatures are related to differences in vessel wall properties and content. The methods described have the potential to improve imaging and better inform interventions for atherosclerotic vessels, such as the carotid artery.
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Affiliation(s)
- Jami L Johnson
- Mechanical and Biomedical Engineering Department, Boise State University, Boise, Idaho, USA; Department of Physics, University of Auckland, Auckland, New Zealand.
| | - Kasper van Wijk
- Department of Physics, University of Auckland, Auckland, New Zealand
| | - Michelle Sabick
- Mechanical and Biomedical Engineering Department, Boise State University, Boise, Idaho, USA
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Lipiec E, Bambery KR, Heraud P, Kwiatek WM, McNaughton D, Tobin MJ, Vogel C, Wood BR. Monitoring UVR induced damage in single cells and isolated nuclei using SR-FTIR microspectroscopy and 3D confocal Raman imaging. Analyst 2014; 139:4200-9. [DOI: 10.1039/c4an00838c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Melanocytes exposed to artificial sunlight and analysed with FTIR and Raman spectroscopy show changes in DNA bands and evidence of lipid accumulation.
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Affiliation(s)
- Ewelina Lipiec
- The Henryk Niewodniczanski Institute of Nuclear Physics, PAN
- 31-342 Kraków, Poland
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
| | | | - Philip Heraud
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
- Department of Anatomy and Developmental Biology
| | - Wojciech M. Kwiatek
- The Henryk Niewodniczanski Institute of Nuclear Physics, PAN
- 31-342 Kraków, Poland
| | - Don McNaughton
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
| | | | - Christian Vogel
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
- BAM Federal Institute for Materials Research and Testing
| | - Bayden R. Wood
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
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50
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Gierlinger N. Revealing changes in molecular composition of plant cell walls on the micron-level by Raman mapping and vertex component analysis (VCA). FRONTIERS IN PLANT SCIENCE 2014; 5:306. [PMID: 25071792 PMCID: PMC4074855 DOI: 10.3389/fpls.2014.00306] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 06/09/2014] [Indexed: 05/18/2023]
Abstract
At the molecular level the plant cell walls consist of a few nanometer thick semi-crystalline cellulose fibrils embedded in amorphous matrix polymers such as pectins, hemicelluloses, and lignins. The arrangement of these molecules within the cell wall in different plant tissues, cells and cell wall layers is of crucial importance for a better understanding and thus optimized utilization of plant biomass. During the last years Confocal Raman microscopy evolved as a powerful method in plant science by revealing the different molecules in context with the microstructure. In this study two-dimensional spectral maps have been acquired of micro-cross-sections of spruce (softwood) and beech (hardwood). Raman images have been derived by using univariate (band integration, height ratios) and multivariate methods [vertex component analysis (VCA)]. While univariate analysis only visualizes changes in selected band heights or areas, VCA separates anatomical regions and cell wall layers with the most different molecular structures. Beside visualization of the distinguished regions and features the underlying molecular structure can be derived based on the endmember spectra. VCA revealed that the lumen sided S3 layer has a similar molecular composition as the pit membrane, both revealing a clear change in lignin composition compared to all other cell wall regions. Within the S2 layer a lamellar structure was visualized, which was elucidated to derive from slight changes in lignin composition and content and might be due to successive but not uniform lignification during growth.
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Affiliation(s)
- Notburga Gierlinger
- Department of Materials Science and Process Engineering, BOKU-University of Natural Resources and Life ScienceVienna, Austria
- Institute for Building Materials, Eidgenössische Technische Hochschule ZurichZurich, Switzerland
- Applied Wood Research Laboratory, Empa – Swiss Federal Laboratories for Material Testing and ResearchDuebendorf, Switzerland
- *Correspondence: Notburga Gierlinger, Department of Materials Science and Process Engineering, BOKU-University of Natural Resources and Life Science, Peter-Jordan Street 82, A-1190 Vienna, Austria e-mail:
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