Cardiac SERCA2A/B: therapeutic targets for heart failure

Area of Science:

• Cardiovascular Biology
• Molecular Cardiology
• Biochemistry

Background:

• Calcium (Ca2+) recycling via the sarcoplasmic reticulum (SR) is crucial for cardiac muscle relaxation.
• Dysfunctional SR Ca2+ handling impairs myocardial relaxation, heart rhythm, and contractile function.
• The Sarco(Endo)plasmic reticulum Ca(2+) ATPase (SERCA) is essential for SR Ca2+ reuptake.

Purpose of the Study:

• To review current pharmacological treatments targeting SERCA2a/b activity.
• To explore novel therapeutic strategies using SERCA2 viral gene delivery for heart failure.
• To highlight the role of SERCA2a/b in cardiac function and disease.

Main Methods:

• Review of clinical practice drugs that activate SERCA2a/b.
• Discussion of emerging SERCA2 viral gene therapy approaches.
• Analysis of SERCA2a/b expression and activity in heart diseases.

Main Results:

• SERCA2a/b expression and activity are altered in major heart diseases like ischemic heart disease, cardiomyopathies, and congestive heart failure.
• Pharmacological agents activating SERCA2a/b are in clinical use.
• SERCA2 viral gene delivery shows promise for improving cardiac function.

Conclusions:

• Restoring adequate SERCA2a/b expression and function is a key therapeutic goal for heart failure.
• Both pharmacological activation and gene therapy targeting SERCA2a/b represent viable strategies.
• Enhancing SERCA2a/b activity can improve cardiac function and treat heart failure.