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Geddes-McAlister J, Hansmeier N. Canadian Proteomics: A Journey across the Country Highlights Discovery and Innovation. J Proteome Res 2024; 23:5229-5232. [PMID: 39523778 DOI: 10.1021/acs.jproteome.4c00960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2024]
Affiliation(s)
- Jennifer Geddes-McAlister
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, N1G 2W1, Ontario, Canada
| | - Nicole Hansmeier
- Department of Biology, Luther College at the University of Regina, Regina, S4S 0A2, Saskatchewan, Canada
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Hartley B, Bassiouni W, Roczkowsky A, Fahlman R, Schulz R, Julien O. N-Terminomic Identification of Intracellular MMP-2 Substrates in Cardiac Tissue. J Proteome Res 2024; 23:4188-4202. [PMID: 38647137 PMCID: PMC11460328 DOI: 10.1021/acs.jproteome.3c00755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/25/2024]
Abstract
Proteases are enzymes that induce irreversible post-translational modifications by hydrolyzing amide bonds in proteins. One of these proteases is matrix metalloproteinase-2 (MMP-2), which has been shown to modulate extracellular matrix remodeling and intracellular proteolysis during myocardial injury. However, the substrates of MMP-2 in heart tissue are limited, and lesser known are the cleavage sites. Here, we used degradomics to investigate the substrates of intracellular MMP-2 in rat ventricular extracts. First, we designed a novel, constitutively active MMP-2 fusion protein (MMP-2-Fc) that we expressed and purified from mammalian cells. Using this protease, we proteolyzed ventricular extracts and used subtiligase-mediated N-terminomic labeling which identified 95 putative MMP-2-Fc proteolytic cleavage sites using mass spectrometry. The intracellular MMP-2 cleavage sites identified in heart tissue extracts were enriched for proteins primarily involved in metabolism, as well as the breakdown of fatty acids and amino acids. We further characterized the cleavage of three of these MMP-2-Fc substrates based on the gene ontology analysis. We first characterized the cleavage of sarco/endoplasmic reticulum calcium ATPase (SERCA2a), a known MMP-2 substrate in myocardial injury. We then characterized the cleavage of malate dehydrogenase (MDHM) and phosphoglycerate kinase 1 (PGK1), representing new cardiac tissue substrates. Our findings provide insights into the intracellular substrates of MMP-2 in cardiac cells, suggesting that MMP-2 activation plays a role in cardiac metabolism.
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Affiliation(s)
- Bridgette Hartley
- Department
of Biochemistry, University of Alberta, Edmonton T6G 2H7, Canada
| | - Wesam Bassiouni
- Department
of Pharmacology, University of Alberta, Edmonton T6G 2S2, Canada
| | - Andrej Roczkowsky
- Department
of Pharmacology, University of Alberta, Edmonton T6G 2S2, Canada
| | - Richard Fahlman
- Department
of Biochemistry, University of Alberta, Edmonton T6G 2H7, Canada
| | - Richard Schulz
- Department
of Pharmacology, University of Alberta, Edmonton T6G 2S2, Canada
- Department
of Pediatrics, University of Alberta, Edmonton T6G 2S2, Canada
| | - Olivier Julien
- Department
of Biochemistry, University of Alberta, Edmonton T6G 2H7, Canada
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Leivaditis V, Mulita F, Dahm M, Grapatsas K, Papatriantafyllou A, Bekou E, Verras GI, Tasios K, Tchabashvili L, Markakis K, Lozos V, Koletsis E. History of the development of isolated heart perfusion experimental model and its pioneering role in understanding heart physiology. Arch Med Sci Atheroscler Dis 2024; 9:e109-e121. [PMID: 39086622 PMCID: PMC11289247 DOI: 10.5114/amsad/188270] [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: 05/01/2024] [Accepted: 05/04/2024] [Indexed: 08/02/2024] Open
Abstract
The isolated heart perfusion model, a fundamental tool in cardiovascular research, has evolved significantly since its inception in the late 19th century. This review traces the development of the isolated heart model, from its early adaptations by pioneers such as Langendorff and Starling to modern advancements by researchers like Morgan and Neely. We discuss the various applications of the model in pharmacological testing, disease modeling, and educational settings, emphasizing its crucial role in understanding cardiac function and disease mechanisms. Recent technological enhancements, including high-resolution imaging, integration with bioengineering, and advanced genomic and proteomic analyses, have significantly broadened the capabilities of these models. Looking forward, we explore potential future developments such as the integration of precision medicine, stem cell research, and artificial intelligence, which promise to revolutionize the use of isolated heart perfusion models. This review highlights the model's crucial role in bridging experimental research and clinical applications.
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Affiliation(s)
- Vasileios Leivaditis
- Department of Cardiothoracic and Vascular Surgery, Westpfalz Klinikum, Kaiserslautern, Germany
| | - Francesk Mulita
- Department of General Surgery, Patras University Hospital, Patras, Greece
| | - Manfred Dahm
- Department of Cardiothoracic and Vascular Surgery, Westpfalz Klinikum, Kaiserslautern, Germany
| | - Konstantinos Grapatsas
- Department of Thoracic Surgery and Thoracic Endoscopy, Ruhrlandklinik, West German Lung Center, University Hospital Essen, University Duisburg-Essen Essen, Germany
| | | | - Eleni Bekou
- Medical Physics Department, Democritus University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | | | | | - Levan Tchabashvili
- Department of General Surgery, Patras University Hospital, Patras, Greece
| | | | - Vasileios Lozos
- Department of Cardiac Surgery, Ippokrateion Hospital, Athens, Greece
| | - Efstratios Koletsis
- Department of Cardiothoracic Surgery, Patras University Hospital, Patras, Greece
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