Calumenin DNA methylation and gene expression in viral myocarditis

Area of Science:

• Cardiology
• Molecular Biology
• Pathology

Background:

• Inflammatory response in myocardial tissue leads to heart failure, with viral myocarditis lacking specific treatments.
• Apoptosis intervention is a promising strategy for preventing and treating heart failure.
• Endoplasmic reticulum (ER) stress is an emerging pathway implicated in apoptosis.

Purpose of the Study:

• To investigate the role of ER stress in viral myocarditis-induced apoptosis.
• To identify mechanisms regulating ER stress and apoptosis in viral myocarditis.
• To evaluate the therapeutic potential of calumenin protein in viral myocarditis.

Main Methods:

• Induction of viral myocarditis in mice using CVB3 treatment.
• Analysis of ER stress-related proteins (GRP78, ATF4, CHOP) expression.
• Investigation of calumenin protein's effect on ER stress-induced apoptosis in vivo.
• Analysis of calumenin DNA methylation in control and VMC groups.

Main Results:

• CVB3 treatment increased apoptosis in mice.
• ER stress markers (GRP78, ATF4, CHOP) were upregulated in viral myocarditis.
• Calumenin protein demonstrated a protective effect against ER stress-induced apoptosis in viral myocarditis.
• Downregulation of calumenin expression in viral myocarditis was not associated with DNA methylation changes.

Conclusions:

• Viral myocarditis induces apoptosis through ER stress.
• Calumenin protein can mitigate ER stress-induced apoptosis in viral myocarditis.
• Calumenin represents a potential therapeutic target for viral myocarditis and associated heart failure.