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Gáspár R, Diószegi P, Nógrádi-Halmi D, Erdélyi-Furka B, Varga Z, Kahán Z, Csont T. The Proteoglycans Biglycan and Decorin Protect Cardiac Cells against Irradiation-Induced Cell Death by Inhibiting Apoptosis. Cells 2024; 13:883. [PMID: 38786104 PMCID: PMC11119486 DOI: 10.3390/cells13100883] [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: 02/29/2024] [Revised: 05/05/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024] Open
Abstract
Radiation-induced heart disease (RIHD), a common side effect of chest irradiation, is a primary cause of mortality among patients surviving thoracic cancer. Thus, the development of novel, clinically applicable cardioprotective agents which can alleviate the harmful effects of irradiation on the heart is of great importance in the field of experimental oncocardiology. Biglycan and decorin are structurally related small leucine-rich proteoglycans which have been reported to exert cardioprotective properties in certain cardiovascular pathologies. Therefore, in the present study we aimed to examine if biglycan or decorin can reduce radiation-induced damage of cardiomyocytes. A single dose of 10 Gray irradiation was applied to induce radiation-induced cell damage in H9c2 cardiomyoblasts, followed by treatment with either biglycan or decorin at various concentrations. Measurement of cell viability revealed that both proteoglycans improved the survival of cardiac cells post-irradiation. The cardiocytoprotective effect of both biglycan and decorin involved the alleviation of radiation-induced proapoptotic mechanisms by retaining the progression of apoptotic membrane blebbing and lowering the number of apoptotic cell nuclei and DNA double-strand breaks. Our findings provide evidence that these natural proteoglycans may exert protection against radiation-induced damage of cardiac cells.
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Affiliation(s)
- Renáta Gáspár
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary; (R.G.); (P.D.); (D.N.-H.); (B.E.-F.)
- Interdisciplinary Centre of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Petra Diószegi
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary; (R.G.); (P.D.); (D.N.-H.); (B.E.-F.)
- Interdisciplinary Centre of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Dóra Nógrádi-Halmi
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary; (R.G.); (P.D.); (D.N.-H.); (B.E.-F.)
- Interdisciplinary Centre of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Barbara Erdélyi-Furka
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary; (R.G.); (P.D.); (D.N.-H.); (B.E.-F.)
- Interdisciplinary Centre of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Zoltán Varga
- Department of Oncotherapy, University of Szeged, H-6720 Szeged, Hungary; (Z.V.); (Z.K.)
| | - Zsuzsanna Kahán
- Department of Oncotherapy, University of Szeged, H-6720 Szeged, Hungary; (Z.V.); (Z.K.)
| | - Tamás Csont
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, H-6720 Szeged, Hungary; (R.G.); (P.D.); (D.N.-H.); (B.E.-F.)
- Interdisciplinary Centre of Excellence, University of Szeged, H-6720 Szeged, Hungary
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Emerging roles of proteoglycans in cardiac remodeling. Int J Cardiol 2018; 278:192-198. [PMID: 30528626 DOI: 10.1016/j.ijcard.2018.11.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 11/12/2018] [Accepted: 11/27/2018] [Indexed: 02/07/2023]
Abstract
Cardiac remodeling is the response of the heart to a range of pathological stimuli. Cardiac remodeling is initially adaptive; however, if sustained, it ultimately causes adverse clinical outcomes. Cardiomyocyte loss or hypertrophy, inflammation and fibrosis are hallmarks of cardiac remodeling. Proteoglycans, which are composed of glycosaminoglycans and a core protein, are a non-structural component of the extracellular matrix. The lack of proteoglycans results in cardiovascular defects during development. Moreover, emerging evidence has indicated that proteoglycans act as significant modifiers in ischemia and pressure overload-related cardiac remodeling. Proteoglycans may also provide novel therapeutic strategies for further improvement in the prognosis of cardiovascular diseases.
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