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The beta1-adrenergic receptor in the heart
Wenchao Xu1,2, Jie Li2,3, Jie Ju1
1Department of Physiology, School of Basic Medical Sciences, Shandong Second Medical University, Weifang, Shandong, China.
Cell Death Discovery
|December 10, 2025
Summary
The beta1-adrenergic receptor (β1-AR) regulates heart function but can cause disease. Understanding its pathways and structure is key to developing targeted therapies for heart conditions.
Area of Science:
- Cardiology
- Molecular Biology
- Pharmacology
Background:
- The beta1-adrenergic receptor (β1-AR) is a G protein-coupled receptor crucial for cardiac function.
- Its activation influences heart rate, contractility, and conduction.
- Dysregulation of β1-AR signaling is implicated in myocardial injury, arrhythmias, and heart failure.
Purpose of the Study:
- To provide a comprehensive review of the beta1-adrenergic receptor (β1-AR).
- To analyze its role in cardiac physiology and pathology.
- To highlight its significance as a pharmacotherapeutic target in cardiovascular diseases.
Main Methods:
- Literature review of research on β1-AR.
- Analysis of β1-AR expression, distribution, and structure.
- Examination of β1-AR signaling pathways (G protein-dependent and independent).
- Review of the association between β1-AR and cardiac diseases.
Main Results:
- β1-AR mediates diverse cardiac effects through complex signaling cascades.
- Abnormalities in β1-AR density, localization, or signaling exacerbate heart disease.
- Third-generation β1-AR blockers represent advanced therapeutic strategies.
Conclusions:
- The β1-AR is a critical regulator of cardiac function and a key player in heart disease.
- Targeting β1-AR offers a promising avenue for treating cardiovascular conditions.
- Further research into β1-AR structure and signaling can refine therapeutic approaches.
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