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Augustyniak K, Lesniak M, Latka H, Golan MP, Kubiak JZ, Zdanowski R, Malek K. Adipose-derived mesenchymal stem cells' adipogenesis chemistry analyzed by FTIR and Raman metrics. J Lipid Res 2024; 65:100573. [PMID: 38844049 DOI: 10.1016/j.jlr.2024.100573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/08/2024] [Accepted: 05/28/2024] [Indexed: 07/01/2024] Open
Abstract
The full understanding of molecular mechanisms of cell differentiation requires a holistic view. Here we combine label-free FTIR and Raman hyperspectral imaging with data mining to detect the molecular cell composition enabling noninvasive monitoring of cell differentiation and identifying biochemical heterogeneity. Mouse adipose-derived mesenchymal stem cells (AD-MSCs) undergoing adipogenesis were followed by Raman and FT-IR imaging, Oil Red, and immunofluorescence. A workflow of the data analysis (IRRSmetrics4stem) was designed to identify spectral predictors of adipogenesis and test machine-learning (ML) methods (hierarchical clustering, PCA, PLSR) for the control of the AD-MSCs differentiation degree. IRRSmetrics4stem provided insights into the chemism of adipogenesis. With single-cell tracking, we established IRRS metrics for lipids, proteins, and DNA variations during AD-MSCs differentiation. The over 90% predictive efficiency of the selected ML methods proved the high sensitivity of the IRRS metrics. Importantly, the IRRS metrics unequivocally recognize a switch from proliferation to differentiation. This study introduced a new bioassay identifying molecular markers indicating molecular transformations and delivering rapid and machine learning-based monitoring of adipogenesis that can be relevant to other differentiation processes. Thus, we introduce a novel, rapid, machine learning-based bioassay to identify molecular markers of adipogenesis. It can be relevant to identification of differentiation-related molecular processes in other cell types, and beyond the cell differentiation including progression of different cellular pathophysiologies reconstituted in vitro.
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Affiliation(s)
- Karolina Augustyniak
- Department of Chemical Physics, Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland; Doctoral School of Exact and Natural Sciences, Jagiellonian University in Krakow, Krakow, Poland
| | - Monika Lesniak
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine - National Research Institute, Warszawa, Poland
| | - Hubert Latka
- Department of Chemical Physics, Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
| | - Maciej P Golan
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine - National Research Institute, Warszawa, Poland; Institute of Psychology, The Maria Grzegorzewska University, Warsaw, Poland
| | - Jacek Z Kubiak
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine - National Research Institute, Warszawa, Poland; Dynamics and Mechanics of Epithelia Group, Institute of Genetics and Development of Rennes (IGDR), Faculty of Medicine, University of Rennes, CNRS, UMR 6290, Rennes, France.
| | - Robert Zdanowski
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine - National Research Institute, Warszawa, Poland.
| | - Kamilla Malek
- Department of Chemical Physics, Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland.
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2
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Hajab H, Anwar A, Nawaz H, Majeed MI, Alwadie N, Shabbir S, Amber A, Jilani MI, Nargis HF, Zohaib M, Ismail S, Kamal A, Imran M. Surface-enhanced Raman spectroscopy of the filtrate portions of the blood serum samples of breast cancer patients obtained by using 30 kDa filtration device. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 311:124046. [PMID: 38364514 DOI: 10.1016/j.saa.2024.124046] [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: 12/04/2023] [Revised: 02/04/2024] [Accepted: 02/12/2024] [Indexed: 02/18/2024]
Abstract
Raman spectroscopy is reliable tool for analyzing and exploring early disease diagnosis related to body fluids, such as blood serum, which contain low molecular weight fraction (LMWF) and high molecular weight fraction (HMWF) proteins. The disease biomarkers consist of LMWF which are dominated by HMWF hence their analysis is difficult. In this study, in order to overcome this issue, centrifugal filter devices of 30 kDa were used to obtain filtrate and residue portions obtained from whole blood serum samples of control and breast cancer diagnosed patients. The filtrate portions obtained in this way are expected to contain the marker proteins of breast cancer of the size below this filter size. These may include prolactin, Microphage migration inhabitation factor (MIF), γ-Synuclein, BCSG1, Leptin, MUC1, RS/DJ-1 present in the centrifuged blood serum (filtrate portions) which are then analyzed by the SERS technique to recognize the SERS spectral characteristics associated with the progression of breast cancer in the samples of different stages as compared to the healthy ones. The key intention of this study is to achieve early-stage breast cancer diagnosis through the utilization of Surface Enhanced Raman Spectroscopy (SERS) after the centrifugation of healthy and breast cancer serum samples with Amicon ultra-filter devices of 30 kDa. The silver nanoparticles with high plasmon resonance are used as a substrate for SERS analysis. Principal Component Analysis (PCA) and Partial Least Discriminant Analysis (PLS-DA) models are utilized as spectral classification tools to assess and predict rapid, reliable, and non-destructive SERS-based analysis. Notably, they were particularly effective in distinguishing between different SERS spectral groups of the cancerous and non-cancerous samples. By comparing all these spectral data sets to each other PLSDA shows the 79 % accuracy, 76 % specificity, and 81 % sensitivity in samples with AUC value of AUC = 0.774 SERS has proven to be a valuable technique for the rapid identification of the SERS spectral features of blood serum and its filtrate fractions from both healthy individuals and those with breast cancer, aiding in disease diagnosis.
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Affiliation(s)
- Hawa Hajab
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Ayesha Anwar
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan.
| | - Muhammad Irfan Majeed
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan.
| | - Najah Alwadie
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
| | - Sana Shabbir
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Arooj Amber
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | | | - Hafiza Faiza Nargis
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Zohaib
- Department of Zoology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Sidra Ismail
- Medical College, Foundation University Islamabad, Pakistan
| | - Abida Kamal
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
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3
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Impaired Extracellular Proteostasis in Patients with Heart Failure. Arch Med Res 2023; 54:211-222. [PMID: 36797157 DOI: 10.1016/j.arcmed.2023.02.001] [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: 09/11/2022] [Revised: 01/11/2023] [Accepted: 02/02/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Proteostasis impairment and the consequent increase of amyloid burden in the myocardium have been associated with heart failure (HF) development and poor prognosis. A better knowledge of the protein aggregation process in biofluids could assist the development and monitoring of tailored interventions. AIM To compare the proteostasis status and protein's secondary structures in plasma samples of patients with HF with preserved ejection fraction (HFpEF), patients with HF with reduced ejection fraction (HFrEF), and age-matched individuals. METHODS A total of 42 participants were enrolled in 3 groups: 14 patients with HFpEF, 14 patients with HFrEF, and 14 age-matched individuals. Proteostasis-related markers were analyzed by immunoblotting techniques. Fourier Transform Infrared (FTIR) Spectroscopy in Attenuated Total Reflectance (ATR) was applied to assess changes in the protein's conformational profile. RESULTS Patients with HFrEF showed an elevated concentration of oligomeric proteic species and reduced clusterin levels. ATR-FTIR spectroscopy coupled with multivariate analysis allowed the discrimination of HF patients from age-matched individuals in the protein amide I absorption region (1700-1600 cm-1), reflecting changes in protein conformation, with a sensitivity of 73 and a specificity of 81%. Further analysis of FTIR spectra showed significantly reduced random coils levels in both HF phenotypes. Also, compared to the age-matched group, the levels of structures related to fibril formation were significantly increased in patients with HFrEF, whereas the β-turns were significantly increased in patients with HFpEF. CONCLUSION Both HF phenotypes showed a compromised extracellular proteostasis and different protein conformational changes, suggesting a less efficient protein quality control system.
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4
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Tomas RC, Sayat AJ, Atienza AN, Danganan JL, Ramos MR, Fellizar A, Notarte KI, Angeles LM, Bangaoil R, Santillan A, Albano PM. Detection of breast cancer by ATR-FTIR spectroscopy using artificial neural networks. PLoS One 2022; 17:e0262489. [PMID: 35081148 PMCID: PMC8791515 DOI: 10.1371/journal.pone.0262489] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022] Open
Abstract
In this study, three (3) neural networks (NN) were designed to discriminate between malignant (n = 78) and benign (n = 88) breast tumors using their respective attenuated total reflection Fourier transform infrared (ATR-FTIR) spectral data. A proposed NN-based sensitivity analysis was performed to determine the most significant IR regions that distinguished benign from malignant samples. The result of the NN-based sensitivity analysis was compared to the obtained results from FTIR visual peak identification. In training each NN models, a 10-fold cross validation was performed and the performance metrics-area under the curve (AUC), accuracy, positive predictive value (PPV), specificity rate (SR), negative predictive value (NPV), and recall rate (RR)-were averaged for comparison. The NN models were compared to six (6) machine learning models-logistic regression (LR), Naïve Bayes (NB), decision trees (DT), random forest (RF), support vector machine (SVM) and linear discriminant analysis (LDA)-for benchmarking. The NN models were able to outperform the LR, NB, DT, RF, and LDA for all metrics; while only surpassing the SVM in accuracy, NPV and SR. The best performance metric among the NN models was 90.48% ± 10.30% for AUC, 96.06% ± 7.07% for ACC, 92.18 ± 11.88% for PPV, 94.19 ± 10.57% for NPV, 89.04% ± 16.75% for SR, and 94.34% ± 10.54% for RR. Results from the proposed sensitivity analysis were consistent with the visual peak identification. However, unlike the FTIR visual peak identification method, the NN-based method identified the IR region associated with C-OH C-OH group carbohydrates as significant. IR regions associated with amino acids and amide proteins were also determined as possible sources of variability. In conclusion, results show that ATR-FTIR via NN is a potential diagnostic tool. This study also suggests a possible more specific method in determining relevant regions within a sample's spectrum using NN.
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Affiliation(s)
- Rock Christian Tomas
- Department of Electrical Engineering, University of the Philippines Los Baños, Los Baños, Laguna, Philippines
| | - Anthony Jay Sayat
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
| | - Andrea Nicole Atienza
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
| | - Jannah Lianne Danganan
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
| | - Ma. Rollene Ramos
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
| | - Allan Fellizar
- Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
- The Graduate School, University of Santo Tomas, Manila, Philippines
- Mariano Marcos Memorial Hospital and Medical Center, Batac, Ilocos Norte, Philippines
| | - Kin Israel Notarte
- Faculty of Medicine and Surgery, University of Santo Tomas, Manila, Philippines
| | - Lara Mae Angeles
- Faculty of Medicine and Surgery, University of Santo Tomas, Manila, Philippines
- University of Santo Tomas Hospital, Manila, Philippines
| | - Ruth Bangaoil
- Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
- The Graduate School, University of Santo Tomas, Manila, Philippines
| | - Abegail Santillan
- Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
- The Graduate School, University of Santo Tomas, Manila, Philippines
| | - Pia Marie Albano
- Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
- Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
- The Graduate School, University of Santo Tomas, Manila, Philippines
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5
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Figoli CB, Garcea M, Bisioli C, Tafintseva V, Shapaval V, Gómez Peña M, Gibbons L, Althabe F, Yantorno OM, Horton M, Schmitt J, Lasch P, Kohler A, Bosch A. A robust metabolomics approach for the evaluation of human embryos from in vitro fertilization. Analyst 2021; 146:6156-6169. [PMID: 34515271 DOI: 10.1039/d1an01191j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The identification of the most competent embryos for transfer to the uterus constitutes the main challenge of in vitro fertilization (IVF). We established a metabolomic-based approach by applying Fourier transform infrared (FTIR) spectroscopy on 130 samples of 3-day embryo culture supernatants from 26 embryos that implanted and 104 embryos that failed. On examining the internal structure of the data by unsupervised multivariate analysis, we found that the supernatant spectra of nonimplanted embryos constituted a highly heterogeneous group. Whereas ∼40% of these supernatants were spectroscopically indistinguishable from those of successfully implanted embryos, ∼60% exhibited diverse, heterogeneous metabolic fingerprints. This observation proved to be the direct result of pregnancy's multifactorial nature, involving both intrinsic embryonic traits and external characteristics. Our data analysis strategy thus involved one-class modelling techniques employing soft independent modelling of class analogy that identified deviant fingerprints as unsuitable for implantation. From these findings, we could develop a noninvasive Fourier-transform-infrared-spectroscopy-based approach that represents a shift in the fundamental paradigm for data modelling applied in assisted-fertilization technologies.
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Affiliation(s)
- Cecilia Beatriz Figoli
- Laboratorio de Bioespectrosocpia, CINDEFI-CONICET, CCT La Plata, Facultad de Ciencias Exactas, UNLP, 1900 La Plata, Argentina.
| | - Marcelo Garcea
- PREGNA Medicina Reproductiva, C1425 AYV Ciudad Autónoma de Buenos Aires, Argentina
| | - Claudio Bisioli
- PREGNA Medicina Reproductiva, C1425 AYV Ciudad Autónoma de Buenos Aires, Argentina
| | - Valeria Tafintseva
- Faculty of Science and Technology, Norwegian University of Life Sciences, 1432 Ås, Norway.
| | - Volha Shapaval
- Faculty of Science and Technology, Norwegian University of Life Sciences, 1432 Ås, Norway.
| | - Mariana Gómez Peña
- PREGNA Medicina Reproductiva, C1425 AYV Ciudad Autónoma de Buenos Aires, Argentina
| | - Luz Gibbons
- IECS, Instituto de Efectividad Clínica y Sanitaria, C1414 Ciudad Autónoma de Buenos Aires, Argentina
| | - Fernando Althabe
- IECS, Instituto de Efectividad Clínica y Sanitaria, C1414 Ciudad Autónoma de Buenos Aires, Argentina
| | - Osvaldo Miguel Yantorno
- Laboratorio de Bioespectrosocpia, CINDEFI-CONICET, CCT La Plata, Facultad de Ciencias Exactas, UNLP, 1900 La Plata, Argentina.
| | - Marcos Horton
- PREGNA Medicina Reproductiva, C1425 AYV Ciudad Autónoma de Buenos Aires, Argentina
| | | | - Peter Lasch
- Centre for Biological Threats and Special Pathogens (ZBS) Proteomics and Spectroscopy Unit, Robert Koch-Institut, 13353 Berlin, Germany
| | - Achim Kohler
- Faculty of Science and Technology, Norwegian University of Life Sciences, 1432 Ås, Norway.
| | - Alejandra Bosch
- Laboratorio de Bioespectrosocpia, CINDEFI-CONICET, CCT La Plata, Facultad de Ciencias Exactas, UNLP, 1900 La Plata, Argentina.
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6
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Mohaissen T, Proniewski B, Targosz-Korecka M, Bar A, Kij A, Bulat K, Wajda A, Blat A, Matyjaszczyk-Gwarda K, Grosicki M, Tworzydlo A, Sternak M, Wojnar-Lason K, Rodrigues-Diez R, Kubisiak A, Briones A, Marzec KM, Chlopicki S. Temporal relationship between systemic endothelial dysfunction and alterations in erythrocyte function in a murine model of chronic heart failure. Cardiovasc Res 2021; 118:2610-2624. [PMID: 34617995 PMCID: PMC9491865 DOI: 10.1093/cvr/cvab306] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 12/25/2022] Open
Abstract
Aims Endothelial dysfunction (ED) and red blood cell distribution width (RDW) are both
prognostic factors in heart failure (HF), but the relationship between them is not
clear. In this study, we used a unique mouse model of chronic HF driven by
cardiomyocyte-specific overexpression of activated Gαq protein (Tgαq*44 mice) to
characterize the relationship between the development of peripheral ED and the
occurrence of structural nanomechanical and biochemical changes in red blood cells
(RBCs). Methods and results Systemic ED was detected in vivo in 8-month-old Tgαq*44 mice, as
evidenced by impaired acetylcholine-induced vasodilation in the aorta and increased
endothelial permeability in the brachiocephalic artery. ED in the aorta was associated
with impaired nitric oxide (NO) production in the aorta and diminished systemic NO
bioavailability. ED in the aorta was also characterized by increased superoxide and
eicosanoid production. In 4- to 6-month-old Tgαq*44 mice, RBC size and membrane
composition displayed alterations that did not result in significant changes in their
nanomechanical and functional properties. However, 8-month-old Tgαq*44 mice presented
greatly accentuated structural and size changes and increased RBC stiffness. In
12-month-old Tgαq*44 mice, the erythropathy was featured by severely altered RBC shape
and elasticity, increased RDW, impaired RBC deformability, and increased oxidative
stress (gluthatione (GSH)/glutathione disulfide (GSSG) ratio). Moreover, RBCs taken from
12-month-old Tgαq*44 mice, but not from 12-month-old FVB mice, coincubated with aortic
rings from FVB mice, induced impaired endothelium-dependent vasodilation and this effect
was partially reversed by an arginase inhibitor [2(S)-amino-6-boronohexanoic acid]. Conclusion In the Tgαq*44 murine model of HF, systemic ED accelerates erythropathy and,
conversely, erythropathy may contribute to ED. These results suggest that erythropathy
may be regarded as a marker and a mediator of systemic ED in HF. RBC arginase and
possibly other RBC-mediated mechanisms may represent novel therapeutic targets for
systemic ED in HF.
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Affiliation(s)
- Tasnim Mohaissen
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna St., Krakow, 30-688 Poland
| | - Bartosz Proniewski
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Marta Targosz-Korecka
- Faculty of Physics, Institute of Astronomy and Applied Computer Science, Jagiellonian University Medical College, 11 Lojasiewicza St., Krakow, 30-348 Poland
| | - Anna Bar
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Agnieszka Kij
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Katarzyna Bulat
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Aleksandra Wajda
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Chemistry, Jagiellonian University, 2Gronostajowa St, Krakow, 30-387 Poland
| | - Aneta Blat
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Chemistry, Jagiellonian University, 2Gronostajowa St, Krakow, 30-387 Poland
| | - Karolina Matyjaszczyk-Gwarda
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna St., Krakow, 30-688 Poland
| | - Marek Grosicki
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Anna Tworzydlo
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Magdalena Sternak
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Kamila Wojnar-Lason
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Medicine, Chair of Pharmacology, Jagiellonian University Medical College, 16 Grzegorzecka St, Krakow, 31-531 Poland
| | - Raquel Rodrigues-Diez
- Hospital La Paz Institute for Health Research IdiPAZ Department of Pharmacology, Faculty of Medicine, Universidad Autónoma de Madrid, Madrid, CV, Spain,; Ciber
| | - Agata Kubisiak
- Faculty of Physics, Institute of Astronomy and Applied Computer Science, Jagiellonian University Medical College, 11 Lojasiewicza St., Krakow, 30-348 Poland
| | - Ana Briones
- Hospital La Paz Institute for Health Research IdiPAZ Department of Pharmacology, Faculty of Medicine, Universidad Autónoma de Madrid, Madrid, CV, Spain,; Ciber
| | - Katarzyna M Marzec
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland
| | - Stefan Chlopicki
- Jagiellonian Center for Experimental Therapeutics (JCET), Jagiellonian University, 14 Bobrzynskiego St, Krakow, 30-348 Poland.,Faculty of Medicine, Chair of Pharmacology, Jagiellonian University Medical College, 16 Grzegorzecka St, Krakow, 31-531 Poland
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Spectroscopy as a useful tool for the identification of changes with time in post-mortem vitreous humor for forensic toxicology purposes. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02786-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractVitreous humor (VH) is an alternative biological matrix with a great advantage of longer availability for analysis due to the lack of many enzymes. The use of VH in forensic toxicology may have an added benefit, however, this application requires rapid, simple, non-destructive, and relatively portable analytical analysis methods. These requirements may be met by Fourier transform infrared spectroscopy technique (FT-IR) equipped with attenuated total reflection accessory (ATR). FT-IR spectra of vitreous humor samples, deposited on glass slides, were collected and subsequent chemometric data analysis by means of Hierarchical Cluster Analysis and Principal Component Analysis was conducted. Differences between animal and human VH samples and human VH samples stored for diverse periods of time were detected. A kinetic study of changes in the VH composition up to 2 weeks showed the distinction of FT-IR spectra collected on the 1st and 14th day of storage. In addition, data obtained for the most recent human vitreous humor samples—collected 3 and 2 years before the study, presented successful discrimination of all time points studied. The method introduced was unable to detect mephedrone addition to VH in the concentration of 10 µg/cm3.
Graphic abstract
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8
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Huber M, Kepesidis KV, Voronina L, Božić M, Trubetskov M, Harbeck N, Krausz F, Žigman M. Stability of person-specific blood-based infrared molecular fingerprints opens up prospects for health monitoring. Nat Commun 2021; 12:1511. [PMID: 33686065 PMCID: PMC7940620 DOI: 10.1038/s41467-021-21668-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/03/2021] [Indexed: 01/31/2023] Open
Abstract
Health state transitions are reflected in characteristic changes in the molecular composition of biofluids. Detecting these changes in parallel, across a broad spectrum of molecular species, could contribute to the detection of abnormal physiologies. Fingerprinting of biofluids by infrared vibrational spectroscopy offers that capacity. Whether its potential for health monitoring can indeed be exploited critically depends on how stable infrared molecular fingerprints (IMFs) of individuals prove to be over time. Here we report a proof-of-concept study that addresses this question. Using Fourier-transform infrared spectroscopy, we have fingerprinted blood serum and plasma samples from 31 healthy, non-symptomatic individuals, who were sampled up to 13 times over a period of 7 weeks and again after 6 months. The measurements were performed directly on liquid serum and plasma samples, yielding a time- and cost-effective workflow and a high degree of reproducibility. The resulting IMFs were found to be highly stable over clinically relevant time scales. Single measurements yielded a multiplicity of person-specific spectral markers, allowing individual molecular phenotypes to be detected and followed over time. This previously unknown temporal stability of individual biochemical fingerprints forms the basis for future applications of blood-based infrared spectral fingerprinting as a multiomics-based mode of health monitoring.
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Affiliation(s)
- Marinus Huber
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany ,grid.450272.60000 0001 1011 8465Max Planck Institute of Quantum Optics, Garching, Germany
| | - Kosmas V. Kepesidis
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany
| | - Liudmila Voronina
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany ,grid.450272.60000 0001 1011 8465Max Planck Institute of Quantum Optics, Garching, Germany
| | - Maša Božić
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany
| | - Michael Trubetskov
- grid.450272.60000 0001 1011 8465Max Planck Institute of Quantum Optics, Garching, Germany
| | - Nadia Harbeck
- grid.5252.00000 0004 1936 973XDepartment of Obstetrics and Gynecology, Breast Center and Comprehensive Cancer Center (CCLMU), Hospital of the Ludwig Maximilian University (LMU), Munich, Germany
| | - Ferenc Krausz
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany ,grid.450272.60000 0001 1011 8465Max Planck Institute of Quantum Optics, Garching, Germany ,Center for Molecular Fingerprinting (CMF), Budapest, Hungary
| | - Mihaela Žigman
- grid.5252.00000 0004 1936 973XDepartment of Physics, Ludwig Maximilian University of Munich, Garching, Germany ,grid.450272.60000 0001 1011 8465Max Planck Institute of Quantum Optics, Garching, Germany ,Center for Molecular Fingerprinting (CMF), Budapest, Hungary
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9
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Blat A, Stepanenko T, Bulat K, Wajda A, Dybas J, Mohaissen T, Alcicek FC, Szczesny-Malysiak E, Malek K, Fedorowicz A, Marzec KM. Spectroscopic Signature of Red Blood Cells in a D-Galactose-Induced Accelerated Aging Model. Int J Mol Sci 2021; 22:2660. [PMID: 33800818 PMCID: PMC7961785 DOI: 10.3390/ijms22052660] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/23/2021] [Accepted: 03/02/2021] [Indexed: 11/30/2022] Open
Abstract
This work presents a semi-quantitative spectroscopic approach, including FTIR-ATR and Raman spectroscopies, for the biochemical analysis of red blood cells (RBCs) supported by the biochemical, morphological and rheological reference techniques. This multi-modal approach provided the description of the RBC alterations at the molecular level in a model of accelerated aging induced by administration of D-galactose (D-gal), in comparison to natural aging. Such an approach allowed to conclude that most age-related biochemical RBC membrane changes (a decrease in lipid unsaturation and the level of phospholipids, or an increase in acyl chain shortening) as well as alterations in the morphological parameters and RBC deformability are well reflected in the D-gal model of accelerated aging. Similarly, as in natural aging, a decrease in LDL level in blood plasma and no changes in the fraction of glucose, creatinine, total cholesterol, HDL, iron, or triglycerides were observed during the course of accelerated aging. Contrary to natural aging, the D-gal model led to an increase in cholesterol esters and the fraction of total esterified lipids in RBC membranes, and evoked significant changes in the secondary structure of the membrane proteins. Moreover, a significant decrease in the phosphorous level of blood plasma was specific for the D-gal model. On the other hand, natural aging induced stronger changes in the secondary structures of the proteins of the RBCs' interior. This work proves that research on the aging mechanism, especially in circulation-related diseases, should employ the D-gal model with caution. Nonetheless, the D-gal model enables to imitate age-related rheological alterations in RBCs, although they are partially derived from different changes observed in the RBC membrane at the molecular level.
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Affiliation(s)
- Aneta Blat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland;
| | - Tetiana Stepanenko
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland;
| | - Katarzyna Bulat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
| | - Aleksandra Wajda
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Jakub Dybas
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
| | - Tasnim Mohaissen
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
- Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna St., 30-688 Krakow, Poland
| | - Fatih Celal Alcicek
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
| | - Ewa Szczesny-Malysiak
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
| | - Kamilla Malek
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland;
| | - Andrzej Fedorowicz
- Chair of Pharmacology, Jagiellonian University Medical College, 16 Grzegorzecka Str., 31-531 Krakow, Poland;
| | - Katarzyna M. Marzec
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland; (A.B.); (T.S.); (K.B.); (A.W.); (J.D.); (T.M.); (F.C.A.); (E.S.-M.)
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A Comparison between FTIR Spectra from HUKE and SH-SY5Y Cell Lines Grown on Different Substrates. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10248825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In recent years, Fourier Transform Infrared (FTIR) micro-spectroscopy has shown promising potential in medical diagnostics at the cellular level. In fact, FTIR spectra can provide information related to DNA, protein, and lipid content and how such a content changes when a pathological state arises. Most of these information is included in the so-called fingerprint region (1000–1800 cm−1), consisting of several spectral peaks related to vibrational modes occurring inside cellular components. Unfortunately, the slides commonly used in cytology (as the glass microscopy slides and coverslips) are opaque to IR radiation in the fingerprint region, whereas they are transparent for wavenumber values larger than 2000 cm−1, where few and broad spectral absorption bands, mainly due to lipids and proteins, are present. Nonetheless, here we show that FTIR spectra performed in the high wavenumber range 2750–3000 cm−1 can be used to discriminate two different types of cells, one from a normal cell line (Human Keratinocyte, HUKE) and the other from a cancer one (SH-SY5Y). The spectra are discriminated by means of their Principal Component Analysis, according to the PC1 component, and by means of ratiometric analysis, according to the ratio of the intensity of the peak at 2956 cm−1 and that of the peak at 2924 cm−1. The PC1 score values of the HUKE are statistically different from the PC1 score values of SH-SY5Y, whereas the intensity ratio results larger for SH-SY5Y than for HUKE cells. Such results occur for different substrates over which the cells have been grown, including the thick glass slides used for cytological analysis. This result is a further step toward the application of FTIR microspectroscopy in the cytological routine diagnosis.
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11
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Korb E, Bağcıoğlu M, Garner-Spitzer E, Wiedermann U, Ehling-Schulz M, Schabussova I. Machine Learning-Empowered FTIR Spectroscopy Serum Analysis Stratifies Healthy, Allergic, and SIT-Treated Mice and Humans. Biomolecules 2020; 10:biom10071058. [PMID: 32708591 PMCID: PMC7408032 DOI: 10.3390/biom10071058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/17/2022] Open
Abstract
The unabated global increase of allergic patients leads to an unmet need for rapid and inexpensive tools for the diagnosis of allergies and for monitoring the outcome of allergen-specific immunotherapy (SIT). In this proof-of-concept study, we investigated the potential of Fourier-Transform Infrared (FTIR) spectroscopy, a high-resolution and cost-efficient biophotonic method with high throughput capacities, to detect characteristic alterations in serum samples of healthy, allergic, and SIT-treated mice and humans. To this end, we used experimental models of ovalbumin (OVA)-induced allergic airway inflammation and allergen-specific tolerance induction in BALB/c mice. Serum collected before and at the end of the experiment was subjected to FTIR spectroscopy. As shown by our study, FTIR spectroscopy, combined with deep learning, can discriminate serum from healthy, allergic, and tolerized mice, which correlated with immunological data. Furthermore, to test the suitability of this biophotonic method for clinical diagnostics, serum samples from human patients were analyzed by FTIR spectroscopy. In line with the results from the mouse models, machine learning-assisted FTIR spectroscopy allowed to discriminate sera obtained from healthy, allergic, and SIT-treated humans, thereby demonstrating its potential for rapid diagnosis of allergy and clinical therapeutic monitoring of allergic patients.
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Affiliation(s)
- Elke Korb
- Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.K.); (E.G.-S.); (U.W.)
| | - Murat Bağcıoğlu
- Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine, 1210 Vienna, Austria;
| | - Erika Garner-Spitzer
- Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.K.); (E.G.-S.); (U.W.)
| | - Ursula Wiedermann
- Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.K.); (E.G.-S.); (U.W.)
| | - Monika Ehling-Schulz
- Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine, 1210 Vienna, Austria;
- Correspondence: (M.E.-S.); (I.S.); Tel.: +43-1-25077-2460 (M.E.-S.); +43-1-40160-38250 (I.S.)
| | - Irma Schabussova
- Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.K.); (E.G.-S.); (U.W.)
- Correspondence: (M.E.-S.); (I.S.); Tel.: +43-1-25077-2460 (M.E.-S.); +43-1-40160-38250 (I.S.)
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Medipally DKR, Cullen D, Untereiner V, Bryant J, Sockalingum GD, Nguyen TNQ, Noone E, Bradshaw S, Finn M, Dunne M, Shannon AM, Armstrong J, Meade AD, Lyng FM. Effect of hemolysis on Fourier transform infrared and Raman spectra of blood plasma. JOURNAL OF BIOPHOTONICS 2020; 13:e201960173. [PMID: 32162465 DOI: 10.1002/jbio.201960173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/19/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
Hemolysis is a very common phenomenon and is referred as the release of intracellular components from red blood cells to the extracellular fluid. Hemolyzed samples are often rejected in clinics due to the interference of hemoglobin and intracellular components in laboratory measurements. Plasma and serum based vibrational spectroscopy studies are extensively applied to generate spectral biomarkers for various diseases. However, no studies have reported the effect of hemolysis in blood based vibrational spectroscopy studies. This study was undertaken to evaluate the effect of hemolysis on infrared and Raman spectra of blood plasma. In this study, prostate cancer plasma samples (n = 30) were divided into three groups (nonhemolyzed, mildly hemolyzed, and moderately hemolyzed) based on the degree of hemolysis and FTIR and Raman spectra were recorded using high throughput (HT)-FTIR and HT-Raman spectroscopy. Discrimination was observed between the infrared and Raman spectra of nonhemolyzed and hemolyzed plasma samples using principal component analysis. A classical least square fitting analysis showed differences in the weighting of pure components in nonhemolyzed and hemolyzed plasma samples. Therefore, it is worth to consider the changes in spectral features due to hemolysis when comparing the results within and between experiments.
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Affiliation(s)
- Dinesh K R Medipally
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
- School of Physics & Clinical & Optometric Sciences, Technological University Dublin, Dublin, Ireland
| | - Daniel Cullen
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
- School of Physics & Clinical & Optometric Sciences, Technological University Dublin, Dublin, Ireland
| | - Valérie Untereiner
- BioSpecT EA 7506, Université de Reims Champagne-Ardenne, UFR Pharmacie, Reims, France
- Plateforme en Imagerie Cellulaire et Tissulaire (PICT), Université de Reims Champagne-Ardenne, Reims, France
| | - Jane Bryant
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
| | - Ganesh D Sockalingum
- BioSpecT EA 7506, Université de Reims Champagne-Ardenne, UFR Pharmacie, Reims, France
| | - Thi N Q Nguyen
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
- School of Physics & Clinical & Optometric Sciences, Technological University Dublin, Dublin, Ireland
| | - Emma Noone
- Clinical Trials Unit, St Luke's Radiation Oncology Network, St Luke's Hospital, Dublin, Ireland
| | - Shirley Bradshaw
- Clinical Trials Unit, St Luke's Radiation Oncology Network, St Luke's Hospital, Dublin, Ireland
| | - Marie Finn
- Clinical Trials Unit, St Luke's Radiation Oncology Network, St Luke's Hospital, Dublin, Ireland
| | - Mary Dunne
- Clinical Trials Unit, St Luke's Radiation Oncology Network, St Luke's Hospital, Dublin, Ireland
| | | | - John Armstrong
- Cancer Trials Ireland, Dublin, Ireland
- Department of Radiation Oncology, St Luke's Radiation Oncology Network, St Luke's Hospital, Dublin, Ireland
| | - Aidan D Meade
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
- School of Physics & Clinical & Optometric Sciences, Technological University Dublin, Dublin, Ireland
| | - Fiona M Lyng
- Radiation and Environmental Science Centre, Focas Research Institute, Technological University Dublin, Dublin, Ireland
- School of Physics & Clinical & Optometric Sciences, Technological University Dublin, Dublin, Ireland
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13
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Metabolomic studies of breast cancer in murine models: A review. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165713. [PMID: 32014550 DOI: 10.1016/j.bbadis.2020.165713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/06/2019] [Accepted: 01/29/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Metabolomic strategies have been extensively used to search for biomarkers of disease, including cancer, in biological complex mixtures such as cells, tissues and biofluids. In breast cancer research, murine models are of great value and metabolomics has been increasingly applied to characterize tumor or organ tissues, or biofluids, for instance to follow-up metabolism during cancer progression or response to specific therapies. SCOPE OF REVIEW This review briefly introduces the different murine models used in breast cancer research and proceeds to present the metabolomic studies reported so far to describe the deviant metabolic behavior associated to breast cancer, in each type of model: xenografts (cell- or patient-derived), spontaneous (naturally-occurring or genetically engineered) and carcinogen-induced. The type of sample and strategies followed are identified, as well as the main findings from of study. MAJOR CONCLUSIONS Metabolomics has gradually become relevant in characterizing murine models of breast cancer, using either Nuclear Magnetic Resonance (NMR) or Mass Spectromety (MS). Both tissue and biofluids are matrixes of interest in this context, although in some type of models, reports have focused primarily on the former. The aims of tissue studies have comprised the search for mechanistic knowledge of carcinogenesis, metastasis development and response/resistance to therapies. Biofluid metabolomics has mainly aimed at finding non-invasive biomarkers for early breast cancer detection or prognosis determination. GENERAL SIGNIFICANCE Metabolomics provides exquisite detail on murine tumor and systemic metabolism of breast cancer. This knowledge paves the way for the discovery of new biomarkers, potentially translatable to in vivo non-invasive patient follow-up.
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14
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Tracking Extracellular Matrix Remodeling in Lungs Induced by Breast Cancer Metastasis. Fourier Transform Infrared Spectroscopic Studies. Molecules 2020; 25:molecules25010236. [PMID: 31935974 PMCID: PMC6982691 DOI: 10.3390/molecules25010236] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 12/25/2019] [Accepted: 01/03/2020] [Indexed: 11/17/2022] Open
Abstract
This work focused on a detailed assessment of lung tissue affected by metastasis of breast cancer. We used large-area chemical scanning implemented in Fourier transform infrared (FTIR) spectroscopic imaging supported with classical histological and morphological characterization. For the first time, we differentiated and defined biochemical changes due to metastasis observed in the lung parenchyma, atelectasis, fibrous, and muscle cells, as well as bronchi ciliate cells, in a qualitative and semi-quantitative manner based on spectral features. The results suggested that systematic extracellular matrix remodeling with the progress of the metastasis process evoked a decrease in the fraction of the total protein in atelectasis, fibrous, and muscle cells, as well as an increase of fibrillar proteins in the parenchyma. We also detected alterations in the secondary conformations of proteins in parenchyma and atelectasis and changes in the level of hydroxyproline residues and carbohydrate moieties in the parenchyma. The results indicate the usability of FTIR spectroscopy as a tool for the detection of extracellular matrix remodeling, thereby enabling the prediction of pre-metastatic niche formation.
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