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Published on: July 10, 2019
The Role of Oncostatin M and Its Receptor Complexes in Cardiomyocyte Protection, Regeneration, and Failure
Thomas Kubin1, Praveen Gajawada1, Peter Bramlage2
1Department of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, Germany.
Abstract:
Oncostatin M (OSM), a member of the interleukin-6 family, functions as a major mediator of cardiomyocyte remodeling under pathological conditions. Its involvement in a variety of human cardiac diseases such as aortic stenosis, myocardial infarction, myocarditis, cardiac sarcoidosis, and various cardiomyopathies make the OSM receptor (OSMR) signaling cascades a promising therapeutic target. However, the development of pharmacological treatment strategies is highly challenging for many reasons. In mouse models of heart disease, OSM elicits opposing effects via activation of the type II receptor complex (OSMR/gp130). Short-term activation of OSMR/gp130 protects the heart after acute injury, whereas chronic activation promotes the development of heart failure. Furthermore, OSM has the ability to integrate signals from unrelated receptors that enhance fetal remodeling (dedifferentiation) of adult cardiomyocytes. Because OSM strongly stimulates the production and secretion of extracellular proteins, it is likely to exert systemic effects, which in turn, could influence cardiac remodeling. Compared with the mouse, the complexity of OSM signaling is even greater in humans because this cytokine also activates the type I leukemia inhibitory factor receptor complex (LIFR/gp130). In this article, we provide an overview of OSM-induced cardiomyocyte remodeling and discuss the consequences of OSMR/gp130 and LIFR/gp130 activation under acute and chronic conditions.
Insights
Oncostatin M (OSM) signaling impacts heart remodeling. While short-term OSM receptor activation aids recovery, chronic signaling promotes heart failure, presenting therapeutic challenges.
Area of Science:
- Cardiology
- Molecular Biology
- Immunology
Background:
- Oncostatin M (OSM), an interleukin-6 family cytokine, is a key mediator of cardiac remodeling in various heart diseases.
- The OSM receptor (OSMR) signaling pathway is implicated in conditions like myocardial infarction and cardiomyopathies, making it a potential therapeutic target.
- OSM's dual role in cardiac injury and its complex signaling in humans present challenges for drug development.
Purpose of the Study:
- To provide an overview of OSM-induced cardiomyocyte remodeling.
- To discuss the consequences of OSMR/gp130 and LIFR/gp130 activation in acute and chronic cardiac conditions.
- To highlight the complexities of OSM signaling in human cardiac diseases.
Main Methods:
- Review of existing literature on Oncostatin M signaling in cardiac remodeling.
- Analysis of OSM receptor (OSMR/gp130) and leukemia inhibitory factor receptor (LIFR/gp130) complex activation.
- Comparison of OSM signaling effects in mouse models versus human cardiac conditions.
Main Results:
- Short-term OSMR/gp130 activation shows protective effects post-acute cardiac injury.
- Chronic OSMR/gp130 activation promotes heart failure development.
- OSM signaling integrates with other receptors, influencing cardiomyocyte dedifferentiation and systemic effects.
Conclusions:
- OSM signaling complexity, involving both OSMR/gp130 and LIFR/gp130, contributes to diverse cardiac remodeling outcomes.
- Understanding these differential effects is crucial for developing targeted pharmacological strategies for heart disease.
- Further research into OSM's role in human cardiac pathophysiology is warranted.
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