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Endosomal Mechanisms in Heart Failure Pathophysiology.
Martijn F Hoes1,2,3, Shujin Wang4,5, Joost Jfp Luiken6,7,8
1Department of Cardiology, Maastricht University Medical Center+, Maastricht, the Netherlands.
Endosomal dysfunction contributes to heart failure by disrupting cardiac metabolism and causing lipotoxicity. Targeting the endosomal system offers a promising therapeutic strategy for heart failure patients.
Area of Science:
- Cardiovascular Research
- Cellular Biology
- Metabolic Disease
Background:
- Endosomal dysfunction is increasingly recognized in heart failure pathophysiology.
- Dysfunctional endosomes impair cardiac metabolism and cellular signaling pathways.
Purpose of the Study:
- To investigate the role of endosomal dysfunction in heart failure.
- To evaluate endosomal system as a therapeutic target for heart failure, focusing on metabolic regulation.
Main Methods:
- Review of current literature on endosomal function and heart failure.
- Analysis of mechanisms linking endosomal dysfunction to metabolic perturbations.
- Exploration of therapeutic strategies targeting the endosomal system.
Main Results:
- Endosomal dysfunction, characterized by v-ATPase disassembly and impaired acidification, drives metabolic issues in heart failure.
- This dysfunction promotes CD36 translocation, leading to lipotoxicity and inflammation via CD36-TLR4.
- These effects are pronounced in diabetic cardiomyopathy and heart failure with preserved ejection fraction.
Conclusions:
- The endosomal system is a viable therapeutic target for heart failure.
- Patient stratification using molecular imaging and biomarkers is crucial for personalized, endosome-targeted therapies.
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