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Li L, Niemann B, Knapp F, Werner S, Mühlfeld C, Schneider JP, Jurida LM, Molenda N, Schmitz ML, Yin X, Mayr M, Schulz R, Kracht M, Rohrbach S. Comparison of the stage-dependent mitochondrial changes in response to pressure overload between the diseased right and left ventricle in the rat. Basic Res Cardiol 2024:10.1007/s00395-024-01051-3. [PMID: 38758338 DOI: 10.1007/s00395-024-01051-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/18/2024]
Abstract
The right ventricle (RV) differs developmentally, anatomically and functionally from the left ventricle (LV). Therefore, characteristics of LV adaptation to chronic pressure overload cannot easily be extrapolated to the RV. Mitochondrial abnormalities are considered a crucial contributor in heart failure (HF), but have never been compared directly between RV and LV tissues and cardiomyocytes. To identify ventricle-specific mitochondrial molecular and functional signatures, we established rat models with two slowly developing disease stages (compensated and decompensated) in response to pulmonary artery banding (PAB) or ascending aortic banding (AOB). Genome-wide transcriptomic and proteomic analyses were used to identify differentially expressed mitochondrial genes and proteins and were accompanied by a detailed characterization of mitochondrial function and morphology. Two clearly distinguishable disease stages, which culminated in a comparable systolic impairment of the respective ventricle, were observed. Mitochondrial respiration was similarly impaired at the decompensated stage, while respiratory chain activity or mitochondrial biogenesis were more severely deteriorated in the failing LV. Bioinformatics analyses of the RNA-seq. and proteomic data sets identified specifically deregulated mitochondrial components and pathways. Although the top regulated mitochondrial genes and proteins differed between the RV and LV, the overall changes in tissue and cardiomyocyte gene expression were highly similar. In conclusion, mitochondrial dysfuntion contributes to disease progression in right and left heart failure. Ventricle-specific differences in mitochondrial gene and protein expression are mostly related to the extent of observed changes, suggesting that despite developmental, anatomical and functional differences mitochondrial adaptations to chronic pressure overload are comparable in both ventricles.
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Affiliation(s)
- Ling Li
- Institute of Physiology, Justus Liebig University Giessen, Aulweg 129, 35392, Giessen, Germany
| | - Bernd Niemann
- Department of Cardiac and Vascular Surgery, Justus Liebig University Giessen, Rudolf-Buchheim-Street. 8, 35392, Giessen, Germany
| | - Fabienne Knapp
- Institute of Physiology, Justus Liebig University Giessen, Aulweg 129, 35392, Giessen, Germany
| | - Sebastian Werner
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University Giessen, Schubertstrasse 81, 35392, Giessen, Germany
| | - Christian Mühlfeld
- Hannover Medical School, Institute of Functional and Applied Anatomy, Carl-Neuberg-Street. 1, 30625, Hannover, Germany
| | - Jan Philipp Schneider
- Hannover Medical School, Institute of Functional and Applied Anatomy, Carl-Neuberg-Street. 1, 30625, Hannover, Germany
| | - Liane M Jurida
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University Giessen, Schubertstrasse 81, 35392, Giessen, Germany
| | - Nicole Molenda
- Institute of Physiology, Justus Liebig University Giessen, Aulweg 129, 35392, Giessen, Germany
| | - M Lienhard Schmitz
- Institute of Biochemistry, Justus Liebig University Giessen, Friedrichstr. 24, 35392, Giessen, Germany
| | - Xiaoke Yin
- School of Cardiovascular and Metabolic Medicine and Science, King's College London, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Manuel Mayr
- School of Cardiovascular and Metabolic Medicine and Science, King's College London, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Rainer Schulz
- Institute of Physiology, Justus Liebig University Giessen, Aulweg 129, 35392, Giessen, Germany
| | - Michael Kracht
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University Giessen, Schubertstrasse 81, 35392, Giessen, Germany
| | - Susanne Rohrbach
- Institute of Physiology, Justus Liebig University Giessen, Aulweg 129, 35392, Giessen, Germany.
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