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Related Experiment Video

Updated: Jul 8, 2026

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells

Flow Cytometry-Based Quantification and Analysis of Myocardial B-Cells

Published on: August 17, 2022

Genetic complexity of autoimmune myocarditis.

Haiyan S Li¹, Davinna L Ligons, Noel R Rose

¹Department of Pathology, The Johns Hopkins University, Baltimore, Maryland 21205, USA.

Autoimmunity Reviews

|January 15, 2008

Summary

Autoimmune myocarditis, leading to dilated cardiomyopathy (DCM), is genetically complex. Non-MHC genes, not MHC genes, significantly influence susceptibility, suggesting shared autoimmune traits.

Area of Science:

Immunology
Genetics
Cardiology

Background:

Autoimmune myocarditis is a chronic myocardial inflammation following viral infection, potentially leading to dilated cardiomyopathy (DCM).
Genetic factors, including major histocompatibility complex (MHC) and non-MHC genes, influence susceptibility to myocarditis and DCM.
Non-MHC genes appear to play a more significant role than MHC genes in disease predisposition, indicating shared genetic underpinnings with other autoimmune conditions.

Purpose of the Study:

To investigate the genetic basis of autoimmune myocarditis and its link to dilated cardiomyopathy.
To identify specific genetic loci and polymorphisms associated with susceptibility to experimental autoimmune myocarditis.
To explore the role of non-MHC genes in regulating immune responses, such as T cell apoptosis, in the context of myocarditis.

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Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

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Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

Published on: June 20, 2014

Main Methods:

Utilizing mouse models of autoimmune myocarditis induced by coxsackievirus B3 infection or cardiac myosin/troponin I immunization.
Employing genetic linkage analysis to identify myocarditis-related non-MHC loci.
Investigating the impact of gene polymorphisms and signaling pathway blockade (e.g., CTLA4, ICOS, PD-1) on disease development.
Analyzing human genetic data, including mutations in genes like CD45, in patients with myocarditis or DCM.

Main Results:

Identified several myocarditis-related non-MHC genetic loci, many overlapping with loci for other autoimmune diseases.
Demonstrated that specific loci (e.g., Eam1, Eam2) regulate T cell apoptosis, influencing disease susceptibility.
Showed that modulation of immune checkpoint signaling pathways can affect experimental autoimmune myocarditis development.
Reported associations between mutations in immunologically relevant genes and human cases of myocarditis/DCM.

Conclusions:

Non-MHC genes are critical determinants of autoimmune myocarditis susceptibility, sharing genetic pathways with general autoimmunity.
Understanding these genetic polymorphisms is key to elucidating autoimmune disease mechanisms.
This research provides insights for developing targeted therapies for autoimmune myocarditis and related conditions like DCM.