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Song Z, Bian W, Lin J, Guo Y, Shi W, Meng H, Chen Y, Zhang M, Liu Z, Lin Z, Ma K, Li L. Heart proteomic profiling discovers MYH6 and COX5B as biomarkers for sudden unexplained death. Forensic Sci Int 2024; 361:112121. [PMID: 38971138 DOI: 10.1016/j.forsciint.2024.112121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/03/2024] [Accepted: 06/24/2024] [Indexed: 07/08/2024]
Abstract
Sudden unexplained death (SUD) is not uncommon in forensic pathology. Yet, diagnosis of SUD remains challenging due to lack of specific biomarkers. This study aimed to screen differentially expressed proteins (DEPs) and validate their usefulness as diagnostic biomarkers for SUD cases. We designed a three-phase investigation, where in the discovery phase, formalin-fixed paraffin-embedded (FFPE) heart specimens were screened through label-free proteomic analysis of cases dying from SUD, mechanical injury and carbon monoxide (CO) intoxication. A total of 26 proteins were identified to be DEPs for the SUD cases after rigorous criterion. Bioinformatics and Adaboost-recursive feature elimination (RFE) analysis further revealed that three of the 26 proteins (MYH6, COX5B and TNNT2) were potential discriminative biomarkers. In the training phase, MYH6 and COX5B were verified to be true DEPs in cardiac tissues from 29 independent SUD cases as compared with a serial of control cases (n = 42). Receiver operating characteristic (ROC) analysis illustrated that combination of MYH6 and COX5B achieved optimal diagnostic sensitivity (89.7 %) and specificity (84.4 %), with area under the curve (AUC) being 0.91. A diagnostic software based on the logistic regression formula derived from the training phase was then constructed. In the validation phase, the diagnostic software was applied to eight authentic SUD cases, seven (87.5 %) of which were accurately recognized. Our study provides a valid strategy towards practical diagnosis of SUD by integrating cardiac MYH6 and COX5B as dual diagnostic biomarkers.
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Affiliation(s)
- Ziyan Song
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Wensi Bian
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Junyi Lin
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Yadong Guo
- Department of Forensic Medicine, School of Basic Medical Sciences, Central South University, Changsha, Hunan 410013, PR China.
| | - Weibo Shi
- Hebei Key Laboratory of Forensic Medicine, Shijiazhuang, Hebei 050017, PR China.
| | - Hang Meng
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Public Security, Bureau, Shanghai 200083, PR China.
| | - Yuanyuan Chen
- Department of Forensic Medicine, School of Basic Medical Sciences, Gannan Medical University, Ganzhou, Jiangxi 341000, PR China.
| | - Molin Zhang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Zheng Liu
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Zijie Lin
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China.
| | - Kaijun Ma
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Public Security, Bureau, Shanghai 200083, PR China.
| | - Liliang Li
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China; Hebei Key Laboratory of Forensic Medicine, Shijiazhuang, Hebei 050017, PR China; Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Public Security, Bureau, Shanghai 200083, PR China.
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2
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Darville LNF, Lockhart JH, Putty Reddy S, Fang B, Izumi V, Boyle TA, Haura EB, Flores ER, Koomen JM. A Fast-Tracking Sample Preparation Protocol for Proteomics of Formalin-Fixed Paraffin-Embedded Tumor Tissues. Methods Mol Biol 2024; 2823:193-223. [PMID: 39052222 DOI: 10.1007/978-1-0716-3922-1_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Archived tumor specimens are routinely preserved by formalin fixation and paraffin embedding. Despite the conventional wisdom that proteomics might be ineffective due to the cross-linking and pre-analytical variables, these samples have utility for both discovery and targeted proteomics. Building on this capability, proteomics approaches can be used to maximize our understanding of cancer biology and clinical relevance by studying preserved tumor tissues annotated with the patients' medical histories. Proteomics of formalin-fixed paraffin-embedded (FFPE) tissues also integrates with histological evaluation and molecular pathology strategies, so that additional collection of research biopsies or resected tumor aliquots is not needed. The acquisition of data from the same tumor sample also overcomes concerns about biological variation between samples due to intratumoral heterogeneity. However, the protein extraction and proteomics sample preparation from FFPE samples can be onerous, particularly for small (i.e., limited or precious) samples. Therefore, we provide a protocol for a recently introduced kit-based EasyPep method with benchmarking against a modified version of the well-established filter-aided sample preparation strategy using laser-capture microdissected lung adenocarcinoma tissues from a genetically engineered mouse model. This model system allows control over the tumor preparation and pre-analytical variables while also supporting the development of methods for spatial proteomics to examine intratumoral heterogeneity. Data are posted in ProteomeXchange (PXD045879).
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Affiliation(s)
| | | | | | - Bin Fang
- H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | | | | | | | | | - John M Koomen
- H. Lee Moffitt Cancer Center, Tampa, FL, USA.
- Molecular Oncology/Pathology, Moffitt Cancer Center, Tampa, FL, USA.
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3
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Lee DK, Rubakhin SS, Sweedler JV. Chemical Decrosslinking-Based Peptide Characterization of Formaldehyde-Fixed Rat Pancreas Using Fluorescence-Guided Single-Cell Mass Spectrometry. Anal Chem 2023; 95:6732-6739. [PMID: 37040477 DOI: 10.1021/acs.analchem.3c00612] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Approaches for the characterization of proteins/peptides in single cells of formaldehyde-fixed (FF) tissues via mass spectrometry (MS) are still under development. The lack of a general method for selectively eliminating formaldehyde-induced crosslinking is a major challenge. A workflow is shown for the high-throughput peptide profiling of single cells isolated from FF tissues, here the rodent pancreas, which possesses multiple peptide hormones from the islets of Langerhans. The heat treatment is enhanced by a collagen-selective multistep thermal process assisting efficient isolation of islets from the FF pancreas and, subsequently, their dissociation into single islet cells. Hydroxylamine-based chemical decrosslinking helped restore intact peptide signals from individual isolated cells. Subsequently, an acetone/glycerol-assisted cell dispersion was optimized for spatially resolved cell deposition onto glass slides, while a glycerol solution maintained the hydrated state of the cells. This sample preparation procedure allowed peptide profiling in FF single cells by fluorescence-guided matrix-assisted laser desorption ionization MS. Here, 2594 single islet cells were analyzed and 28 peptides were detected, including insulin C-peptides and glucagon. T-distributed stochastic neighbor embedding (t-SNE) data visualization demonstrated that cells cluster based on cell-specific pancreatic peptide hormones. This workflow expands the sample availability for single-cell MS characterization to a wide range of formaldehyde-treated tissue specimens stored in biobanks.
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Affiliation(s)
- Dong-Kyu Lee
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Stanislav S Rubakhin
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jonathan V Sweedler
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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4
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de Lima-Souza RA, Scarini JF, Lavareze L, Emerick C, dos Santos ES, Leme AFP, Egal ESA, Altemani A, Mariano FV. Protein markers of primary Salivary Gland Tumors: A systematic review of proteomic profiling studies. Arch Oral Biol 2022; 136:105373. [DOI: 10.1016/j.archoralbio.2022.105373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/06/2022] [Accepted: 02/08/2022] [Indexed: 11/02/2022]
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5
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Targeted Protein Profiling of In Vivo NIPP-Treated Tissues Using DigiWest Technology. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112311238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Non-invasive physical plasma (NIPP) is a novel therapeutic tool, currently being evaluated for the treatment of cancer and precancerous lesions in gynecology and other disciplines. Additionally, patients with cervical intraepithelial neoplasia (CIN) may benefit from NIPP treatment due to its non-invasive, side-effect-free, and tissue-sparing character. However, the molecular impact of in vivo NIPP treatment needs to be further investigated. For this purpose, usually only very small tissue biopsies are available after NIPP treatment. Here, we adapted DigiWest technology, a high-throughput bead-based Western blot, for the analysis of formalin-fixed paraffin-embedded (FFPE) cervical punch biopsies with a minimal sample amount. We investigated the molecular effects of NIPP treatment directly after (0 h) and 24 h after in vivo application. Results were compared to in vitro NIPP-treated human malignant cervical cells. NIPP effects were primarily based on an inhibitory impact on the cell cycle and cell growth factors. DigiWest technology was suitable for detailed protein profiling of small, primary FFPE biopsies.
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6
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García-Vence M, Chantada-Vazquez MDP, Sosa-Fajardo A, Agra R, Barcia de la Iglesia A, Otero-Glez A, García-González M, Cameselle-Teijeiro JM, Nuñez C, Bravo JJ, Bravo SB. Protein Extraction From FFPE Kidney Tissue Samples: A Review of the Literature and Characterization of Techniques. Front Med (Lausanne) 2021; 8:657313. [PMID: 34055835 PMCID: PMC8158658 DOI: 10.3389/fmed.2021.657313] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/01/2021] [Indexed: 12/15/2022] Open
Abstract
Most tissue biopsies from patients in hospital environments are formalin-fixed and paraffin-embedded (FFPE) for long-term storage. This fixation process produces a modification in the proteins called “crosslinks”, which improves protein stability necessary for their conservation. Currently, these samples are mainly used in clinical practice for performing immunohistochemical analysis, since these modifications do not suppose a drawback for this technique; however, crosslinks difficult the protein extraction process. Accordingly, these modifications make the development of a good protein extraction protocol necessary. Due to the specific characteristics of each tissue, the same extraction buffers or deparaffinization protocols are not equally effective in all cases. Therefore, it is necessary to obtain a specific protocol for each tissue. The present work aims to establish a deparaffinization and protein extraction protocol from FFPE kidney samples to obtain protein enough of high quality for the subsequent proteomic analysis. Different deparaffination, protocols and protein extraction buffers will be tested in FFPE kidney samples. The optimized conditions will be applied in the identification by LC-MS/MS analysis of proteins extracted from 5, 10, and 15 glomeruli obtained through the microdissection of FFPE renal samples.
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Affiliation(s)
- Maria García-Vence
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - Maria Del Pilar Chantada-Vazquez
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain.,Research Unit, Lucus Augusti University Hospital (HULA), Servizo Galego de Saúde (SERGAS), Lugo, Spain
| | - Ana Sosa-Fajardo
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Vrije Universiteit, Brussels, Belgium
| | - Rebeca Agra
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - Ana Barcia de la Iglesia
- Nephrology Laboratory, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - Alfonso Otero-Glez
- Nephrology Service, University Clinical Hospital of Ourense (CHOU), Orense, Spain
| | - Miguel García-González
- Nephrology Laboratory, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - José M Cameselle-Teijeiro
- Department of Pathology, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Santiago, Spain
| | - Cristina Nuñez
- Research Unit, Lucus Augusti University Hospital (HULA), Servizo Galego de Saúde (SERGAS), Lugo, Spain
| | - Juan J Bravo
- Nephrology Service, University Clinical Hospital of Vigo (Alvaro Cunqueiro-CHUVI), Vigo, Spain
| | - Susana B Bravo
- Proteomic Unit, Health Research Institute of Santiago de Compostela (IDIS), University Clinical Hospital of Santiago de Compostela (CHUS), Santiago de Compostela, Spain
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7
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Quantitative Proteomic Analysis Using Formalin-Fixed, Paraffin-Embedded (FFPE) Human Cardiac Tissue. Methods Mol Biol 2021; 2261:525-533. [PMID: 33421012 DOI: 10.1007/978-1-0716-1186-9_33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Clinical tissue archives represent an invaluable source of biological information. Formalin-fixed, paraffin-embedded (FFPE) tissue can be used for retrospective investigation of biomarkers of diseases and prognosis.Recently, the number of studies using proteome profiling of samples from clinical archives has markedly increased. However, the application of conventional quantitative proteomics technologies remains a challenge mainly due to the harsh fixation process resulting in protein cross-linking and protein degradation. In the present chapter, we demonstrate a protocol for label-free proteomic analysis of FFPE tissue prepared from human cardiac autopsies. The data presented here highlight the applicability and suitability of FFPE heart tissue for understanding the molecular mechanism of cardiac injury using a proteomics approach.
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8
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Kuras M, Woldmar N, Kim Y, Hefner M, Malm J, Moldvay J, Döme B, Fillinger J, Pizzatti L, Gil J, Marko-Varga G, Rezeli M. Proteomic Workflows for High-Quality Quantitative Proteome and Post-Translational Modification Analysis of Clinically Relevant Samples from Formalin-Fixed Paraffin-Embedded Archives. J Proteome Res 2020; 20:1027-1039. [PMID: 33301673 DOI: 10.1021/acs.jproteome.0c00850] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Well-characterized archival formalin-fixed paraffin-embedded (FFPE) tissues are of much value for prospective biomarker discovery studies, and protocols that offer high throughput and good reproducibility are essential in proteomics. Therefore, we implemented efficient paraffin removal and protein extraction from FFPE tissues followed by an optimized two-enzyme digestion using suspension trapping (S-Trap). The protocol was then combined with TMTpro 16plex labeling and applied to lung adenocarcinoma patient samples. In total, 9585 proteins were identified, and proteins related to the clinical outcome were detected. Because acetylation is known to play a major role in cancer development, a fast on-trap acetylation protocol was developed for studying endogenous lysine acetylation, which allows identification and localization of the lysine acetylation together with quantitative comparison between samples. We demonstrated that FFPE tissues are equivalent to frozen tissues to study the degree of acetylation between patients. In summary, we present a reproducible sample preparation workflow optimized for FFPE tissues that resolves known proteomic-related challenges. We demonstrate compatibility of the S-Trap with isobaric labeling and for the first time, we prove that it is feasible to study endogenous lysine acetylation stoichiometry in FFPE tissues, contributing to better utility of the existing global tissue archives. The MS proteomic data have been deposited to the ProteomeXchange Consortium via the PRIDE partner repository with the data set identifiers PXD020157, PXD021986, and PXD021964.
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Affiliation(s)
- Magdalena Kuras
- Div. Clinical Chemistry, Dept. of Translational Medicine, Lund University, Skåne University Hospital Malmö, Malmö 20502, Sweden
| | - Nicole Woldmar
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden.,Laboratory of Molecular Biology and Blood Proteomics - LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
| | - Yonghyo Kim
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden
| | - Max Hefner
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden
| | - Johan Malm
- Div. Clinical Chemistry, Dept. of Translational Medicine, Lund University, Skåne University Hospital Malmö, Malmö 20502, Sweden
| | - Judit Moldvay
- Dept. of Pulmonology, National Korányi Institute of Pulmonology, Semmelweis University, Budapest 1085, Hungary
| | - Balázs Döme
- Dept. of Pulmonology, National Korányi Institute of Pulmonology, Semmelweis University, Budapest 1085, Hungary.,Dept. of Thoracic Surgery, National Institute of Oncology, Semmelweis University, Budapest 1085, Hungary.,Div. of Thoracic Surgery, Dept. of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Vienna 1090, Austria
| | - János Fillinger
- Dept. of Pulmonology, National Korányi Institute of Pulmonology, Semmelweis University, Budapest 1085, Hungary.,Dept. of Thoracic Surgery, National Institute of Oncology, Semmelweis University, Budapest 1085, Hungary
| | - Luciana Pizzatti
- Laboratory of Molecular Biology and Blood Proteomics - LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil
| | - Jeovanis Gil
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden
| | - György Marko-Varga
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden
| | - Melinda Rezeli
- Div. Clinical Protein Science & Imaging, Dept. of Clinical Sciences (Lund) and Dept. of Biomedical Engineering, Lund University, Lund 22100, Sweden
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9
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Azimzadeh O, Azizova T, Merl-Pham J, Blutke A, Moseeva M, Zubkova O, Anastasov N, Feuchtinger A, Hauck SM, Atkinson MJ, Tapio S. Chronic Occupational Exposure to Ionizing Radiation Induces Alterations in the Structure and Metabolism of the Heart: A Proteomic Analysis of Human Formalin-Fixed Paraffin-Embedded (FFPE) Cardiac Tissue. Int J Mol Sci 2020; 21:ijms21186832. [PMID: 32957660 PMCID: PMC7555548 DOI: 10.3390/ijms21186832] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 12/23/2022] Open
Abstract
Epidemiological studies on workers employed at the Mayak plutonium enrichment plant have demonstrated an association between external gamma ray exposure and an elevated risk of ischemic heart disease (IHD). In a previous study using fresh-frozen post mortem samples of the cardiac left ventricle of Mayak workers and non-irradiated controls, we observed radiation-induced alterations in the heart proteome, mainly downregulation of mitochondrial and structural proteins. As the control group available at that time was younger than the irradiated group, we could not exclude age as a confounding factor. To address this issue, we have now expanded our study to investigate additional samples using archival formalin-fixed paraffin-embedded (FFPE) tissue. Importantly, the control group studied here is older than the occupationally exposed (>500 mGy) group. Label-free quantitative proteomics analysis showed that proteins involved in the lipid metabolism, sirtuin signaling, mitochondrial function, cytoskeletal organization, and antioxidant defense were the most affected. A histopathological analysis elucidated large foci of fibrotic tissue, myocardial lipomatosis and lymphocytic infiltrations in the irradiated samples. These data highlight the suitability of FFPE material for proteomics analysis. The study confirms the previous results emphasizing the role of adverse metabolic changes in the radiation-associated IHD. Most importantly, it excludes age at the time of death as a confounding factor.
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Affiliation(s)
- Omid Azimzadeh
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Institute of Radiation Biology, 85764 Neuherberg, Germany; (N.A.); (M.J.A.); (S.T.)
- Correspondence: ; Tel.: +49-89-3187-3887
| | - Tamara Azizova
- Southern Urals Biophysics Institute (SUBI), Russian Federation, 456780 Ozyorsk, Russia; (T.A.); (M.M.); (O.Z.)
| | - Juliane Merl-Pham
- Helmholtz Zentrum München—German Research Centre for Environmental Health, Research Unit Protein Science, 80939 Munich, Germany; (J.M.-P.); (S.M.H.)
| | - Andreas Blutke
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Research Unit Analytical Pathology, 85764 Neuherberg, Germany; (A.B.); (A.F.)
| | - Maria Moseeva
- Southern Urals Biophysics Institute (SUBI), Russian Federation, 456780 Ozyorsk, Russia; (T.A.); (M.M.); (O.Z.)
| | - Olga Zubkova
- Southern Urals Biophysics Institute (SUBI), Russian Federation, 456780 Ozyorsk, Russia; (T.A.); (M.M.); (O.Z.)
| | - Natasa Anastasov
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Institute of Radiation Biology, 85764 Neuherberg, Germany; (N.A.); (M.J.A.); (S.T.)
| | - Annette Feuchtinger
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Research Unit Analytical Pathology, 85764 Neuherberg, Germany; (A.B.); (A.F.)
| | - Stefanie M. Hauck
- Helmholtz Zentrum München—German Research Centre for Environmental Health, Research Unit Protein Science, 80939 Munich, Germany; (J.M.-P.); (S.M.H.)
| | - Michael J. Atkinson
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Institute of Radiation Biology, 85764 Neuherberg, Germany; (N.A.); (M.J.A.); (S.T.)
- Chair of Radiation Biology, Technical University of Munich, 81675 Munich, Germany
| | - Soile Tapio
- Helmholtz Zentrum München—German Research Centre for Environmental Health GmbH, Institute of Radiation Biology, 85764 Neuherberg, Germany; (N.A.); (M.J.A.); (S.T.)
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10
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Buczak K, Kirkpatrick JM, Truckenmueller F, Santinha D, Ferreira L, Roessler S, Singer S, Beck M, Ori A. Spatially resolved analysis of FFPE tissue proteomes by quantitative mass spectrometry. Nat Protoc 2020; 15:2956-2979. [PMID: 32737464 DOI: 10.1038/s41596-020-0356-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 05/14/2020] [Indexed: 01/09/2023]
Abstract
Bottom-up mass spectrometry-based proteomics relies on protein digestion and peptide purification. The application of such methods to broadly available clinical samples such as formalin-fixed and paraffin-embedded (FFPE) tissues requires reversal of chemical crosslinking and the removal of reagents that are incompatible with mass spectrometry. Here, we describe in detail a protocol that combines tissue disruption by ultrasonication, heat-induced antigen retrieval and two alternative methods for efficient detergent removal to enable quantitative proteomic analysis of limited amounts of FFPE material. To show the applicability of our approach, we used hepatocellular carcinoma (HCC) as a model system. By combining the described protocol with laser-capture microdissection, we were able to quantify the intra-tumor heterogeneity of a tumor specimen on the proteome level using a single slide with tissue of 10-µm thickness. We also demonstrate broader applicability to other tissues, including human gallbladder and heart. The procedure described in this protocol can be completed within 8 d.
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Affiliation(s)
- Katarzyna Buczak
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Biozentrum, University of Basel, Basel, Switzerland
| | - Joanna M Kirkpatrick
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany.,Proteomics Science Technology Platform, The Francis Crick Institute, London, UK
| | | | - Deolinda Santinha
- Center for Neuroscience and Cell Biology and Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Lino Ferreira
- Center for Neuroscience and Cell Biology and Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Stephanie Roessler
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Stephan Singer
- Institute of Pathology, University Hospital Tuebingen, Tuebingen, Germany
| | - Martin Beck
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany. .,Department of Molecular Sociology, Max Planck Institute of Biophysics, Frankfurt am Main, Germany.
| | - Alessandro Ori
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany.
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11
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Giusti L, Angeloni C, Lucacchini A. Update on proteomic studies of formalin-fixed paraffin-embedded tissues. Expert Rev Proteomics 2019; 16:513-520. [DOI: 10.1080/14789450.2019.1615452] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Laura Giusti
- School of Pharmacy, University of Camerino, Camerino, Italy
| | | | - Antonio Lucacchini
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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