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Poorna R, Chen WW, Qiu P, Cicerone MT. Toward Gene-Correlated Spatially Resolved Metabolomics with Fingerprint Coherent Raman Imaging. J Phys Chem B 2023; 127:5576-5587. [PMID: 37311254 PMCID: PMC10316396 DOI: 10.1021/acs.jpcb.3c01446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/30/2023] [Indexed: 06/15/2023]
Abstract
Raman spectroscopy has long been known to provide sufficient information to discriminate distinct cell phenotypes. Underlying this discriminating capability is that Raman spectra provide an overall readout of the metabolic profiles that change with transcriptomic activity. Robustly associating Raman spectral changes with the regulation of specific signaling pathways may be possible, but the spectral signals of interest may be weak and vary somewhat among individuals. Establishing a Raman-to-transcriptome mapping will thus require tightly controlled and easily manipulated biological systems and high-throughput spectral acquisition. We attempt to meet these requirements using broadband coherent anti-Stokes Raman scattering (BCARS) microscopy to spatio-spectrally map the C. elegans hermaphrodite gonad in vivo at subcellular resolution. The C. elegans hermaphrodite gonad is an ideal model system with a sequential, continuous process of highly regulated spatiotemporal cellular events. We demonstrate that the BCARS spatio-spectral signatures correlate with gene expression profiles in the gonad, evincing that BCARS has potential as a spatially resolved omics surrogate.
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Affiliation(s)
- Rajas Poorna
- Department
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Wei-Wen Chen
- Department
of Chemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Peng Qiu
- Department
of Biomedical Engineering, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Marcus T. Cicerone
- Department
of Chemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Wang W, Mu M, Zou Y, Li B, Cao H, Hu D, Tao X. Inflammation and fibrosis in the coal dust-exposed lung described by confocal Raman spectroscopy. PeerJ 2022; 10:e13632. [PMID: 35765591 PMCID: PMC9233900 DOI: 10.7717/peerj.13632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/03/2022] [Indexed: 01/17/2023] Open
Abstract
Background Coal workers' pneumoconiosis (CWP) is an occupational disease that severely damages the life and health of miners. However, little is known about the molecular and cellular mechanisms changes associated with lung inflammation and fibrosis induced by coal dust. As a non-destructive technique for measuring biological tissue, confocal Raman spectroscopy provides accurate molecular fingerprints of label-free tissues and cells. Here, the progression of lung inflammation and fibrosis in a murine model of CWP was evaluated using confocal Raman spectroscopy. Methods A mouse model of CWP was constructed and biochemical analysis in lungs exposed to coal dust after 1 month (CWP-1M) and 3 months (CWP-3M) vs control tissues (NS) were used by confocal Raman spectroscopy. H&E, immunohistochemical and collagen staining were used to evaluate the histopathology alterations in the lung tissues. Results The CWP murine model was successfully constructed, and the mouse lung tissues showed progression of inflammation and fibrosis, accompanied by changes in NF-κB, p53, Bax, and Ki67. Meanwhile, significant differences in Raman bands were observed among the different groups, particularly changes at 1,248, 1,448, 1,572, and 746 cm-1. These changes were consistent with collagen, Ki67, and Bax levels in the CWP and NS groups. Conclusion Confocal Raman spectroscopy represented a novel approach to the identification of the biochemical changes in CWP lungs and provides potential biomarkers of inflammation and fibrosis.
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Affiliation(s)
- Wenyang Wang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Min Mu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Yuanjie Zou
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Bing Li
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Hangbing Cao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Dong Hu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
| | - Xinrong Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui, China,Anhui Province Engineering Laboratory of Occupational Health and Safety, Huainan, Anhui, China,Anhui University of Science and Technology, Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Huainan, Anhui, China,Anhui University of Science and Technology, School of Medicine, Department of Medical Frontier Experimental Center, Huainan, Anhui, China
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Li J, Qin J, Zeng H, Li J, Wang K, Wang S. Unveiling dose- and time-dependent osteosarcoma cell responses to the γ-secretase inhibitor, DAPT, by confocal Raman microscopy. JOURNAL OF BIOPHOTONICS 2020; 13:e202000238. [PMID: 32697432 DOI: 10.1002/jbio.202000238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/06/2020] [Accepted: 07/19/2020] [Indexed: 05/08/2023]
Abstract
Using confocal Raman micro-spectroscopy, this study aims to elucidate the cellular responses of the γ-secretase inhibitor, N-[N-(3,5-difluorophenacetyl)-L-alanyl]-S-phenylglycine t-butyl ester (DAPT), in osteosarcoma (OS) cells in a dose- and time-dependent manner. The K7M2 murine OS cell line was treated with different DAPT doses (0, 10, 20, and 40 μM) for 24 and 48 hours before investigations. Significant compositional changes (nucleic acids, protein and lipid) after DAPT treatment were addressed, which testified inhibitory effect of DAPT on the growth of OS cells. Moreover, both partial least squares-discriminant analysis (PLS-DA) and principal component analysis-linear discriminant analysis (PCA-LDA) analyses revealed governing composition variations among groups by distinguishing their spectral characteristics. Furthermore, by adopting leave-one-out cross validation method, it is shown that PLS-DA exhibited more classification capacity than PCA-LDA algorithm. Hence, by understanding the DAPT-based cellular variations, the achieved results provided an experimental foundation to establish new DAPT-based anticancer therapeutic strategies, and preclinical Raman analytical methodologies on drug-cell interactions.
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Affiliation(s)
- Jie Li
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China
| | - Jie Qin
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Haishan Zeng
- Imaging Unit-Integrative Oncology Department, BC Cancer Research Center, Vancouver, BC, Canada
| | - Jing Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Kaige Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China
| | - Shuang Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China
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Li J, Wang R, Qin J, Zeng H, Wang K, He Q, Wang D, Wang S. Confocal Raman Spectral Imaging Study of DAPT, a γ-secretase Inhibitor, Induced Physiological and Biochemical Reponses in Osteosarcoma Cells. Int J Med Sci 2020; 17:577-590. [PMID: 32210707 PMCID: PMC7085205 DOI: 10.7150/ijms.43506] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 01/21/2020] [Indexed: 12/22/2022] Open
Abstract
Confocal Raman microspectral imaging was adopted to elucidate the cellular drug responses of osteosarcoma cells (OC) to N-[N-(3, 5-difluorophenyl acetyl)-L-alanyl]-sphenylglycine butyl ester (DAPT), a γ-secretase inhibitor, by identifying the drug induced subcellular compositional and structural changes. Methods: Spectral information were acquired from cultured osteosarcoma cells treated with 0 (Untreated Group, UT), 10 (10 μM DAPT treated, 10T), 20 μM (20 μM DAPT treated, 20T) DAPT for 24 hours. A one-way ANOVA and Tukey's honest significant difference (HSD) post hoc multiple test were sequentially applied to address spectral features among three groups. Multivariate algorithms such as K-means clustering analysis (KCA) and Principal component analysis (PCA) were used to highlight the structural and compositional differences, while, univariate imaging was applied to illustrate the distribution pattern of certain cellular components after drug treatment. Results: Major biochemical changes in DAPT-induced apoptosis came from changes in the content and structure of proteins, lipids, and nucleic acids. By adopted multivariate algorithms, the drug induced cellular changes was identified by the morphology and spectral characteristics between untreated cells and treated cells, testified that DAPT mainly acted in the nuclear region. With the increase of the drug concentration, the content of main subcellular compositions, such nucleic acid, protein, and lipid decreased. In an addition, DAPT-induced nuclear fragmentation and apoptosis was depicted by the univariate Raman image of major cellular components (nucleic acids, proteins and lipids). Conclusions: The achieved Raman spectral and imaging results illustrated detailed DAPT-induced subcellular compositional and structural variations as a function of drug dose. Such observations can not only explain drug therapeutic mechanisms of OC DAPT treatment, and also provide new insights for accessing the medicine curative efficacy and predicting prognosis.
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Affiliation(s)
- Jie Li
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi 710069, China
| | - Rui Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Jie Qin
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Haishan Zeng
- Imaging Unit - Integrative Oncology Department, BC Cancer Research Center, Vancouver, BC, V5Z1L3, Canada
| | - Kaige Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi 710069, China
| | - Qingli He
- Department of Physics, Northwest University, Xi'an, Shaanxi 710069, China
| | - Difan Wang
- School of Life, Xidian University, Xi'an, Shaanxi 710071, China
| | - Shuang Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi 710069, China
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Gala de Pablo J, Armistead FJ, Peyman SA, Bonthron D, Lones M, Smith S, Evans SD. Biochemical fingerprint of colorectal cancer cell lines using label-free live single-cell Raman spectroscopy. JOURNAL OF RAMAN SPECTROSCOPY : JRS 2018; 49:1323-1332. [PMID: 31031517 PMCID: PMC6473482 DOI: 10.1002/jrs.5389] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/22/2018] [Accepted: 03/25/2018] [Indexed: 05/27/2023]
Abstract
Label-free live single-cell Raman spectroscopy was used to obtain a chemical fingerprint of colorectal cancer cells including the classification of the SW480 and SW620 cell line model system, derived from primary and secondary tumour cells from the same patient. High-quality Raman spectra were acquired from hundreds of live cells, showing high reproducibility between experiments. Principal component analysis with linear discriminant analysis yielded the best cell classification, with an accuracy of 98.7 ± 0.3% (standard error) when compared with discrimination trees or support vector machines. SW480 showed higher content of the disordered secondary protein structure Amide III band, whereas SW620 showed larger α-helix and β-sheet band content. The SW620 cell line also displayed higher nucleic acid, phosphates, saccharide, and CH2 content. HL60, HT29, HCT116, SW620, and SW480 live single-cell spectra were classified using principal component analysis or linear discriminant analysis with an accuracy of 92.4 ± 0.4% (standard error), showing differences mainly in the β-sheet content, the cytochrome C bands, the CH-stretching regions, the lactate contributions, and the DNA content. The lipids contributions above 2,900 cm-1 and the lactate contributions at 1,785 cm-1 appeared to be dependent on the colorectal adenocarcinoma stage, the advanced stage cell lines showing lower lipid, and higher lactate content. The results demonstrate that these cell lines can be distinguished with high confidence, suggesting that Raman spectroscopy on live cells can distinguish between different disease stages, and could play an important role clinically as a diagnostic tool for cell phenotyping.
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Affiliation(s)
- Julia Gala de Pablo
- Molecular and Nanoscale Physics Group, School of Physics and AstronomyUniversity of LeedsLeedsUK
| | - Fern J. Armistead
- Molecular and Nanoscale Physics Group, School of Physics and AstronomyUniversity of LeedsLeedsUK
| | - Sally A. Peyman
- Molecular and Nanoscale Physics Group, School of Physics and AstronomyUniversity of LeedsLeedsUK
- Welcome Trust Brenner Building, St James's University Hospital, Faculty of Medicine and HealthUniversity of LeedsLeedsUK
| | - David Bonthron
- Welcome Trust Brenner Building, St James's University Hospital, Faculty of Medicine and HealthUniversity of LeedsLeedsUK
| | - Michael Lones
- School of Mathematical and Computer SciencesHeriot‐Watt UniversityEdinburghUK
| | | | - Stephen D. Evans
- Molecular and Nanoscale Physics Group, School of Physics and AstronomyUniversity of LeedsLeedsUK
- Welcome Trust Brenner Building, St James's University Hospital, Faculty of Medicine and HealthUniversity of LeedsLeedsUK
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