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An Approach to Study Shape-Dependent Transcriptomics at a Single Cell Level
Published on: November 2, 2020
Genetics and disease of ventricular muscle
Diane Fatkin1, Christine E Seidman, Jonathan G Seidman
1Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales 2010, Australia.
Insights
Genetic variations significantly impact cardiomyopathies, a group of heart muscle diseases. Understanding the complex interplay of multiple genetic variants, not just single mutations, is crucial for accurate diagnosis and new disease models.
Area of Science:
- Cardiology
- Genetics
- Genomics
Background:
- Cardiomyopathies are diverse heart muscle diseases linked to heart failure, arrhythmias, and mortality.
- Genetic variations are key in cardiomyopathy development, with many single-gene mutations identified.
- Large-scale genome sequencing reveals extensive genetic diversity within individuals.
Purpose of the Study:
- To emphasize the need for a more sophisticated interpretation of single-gene mutations in cardiomyopathies.
- To highlight the importance of considering the cumulative effect of multiple genetic variants.
- To advocate for novel disease models incorporating broader genetic, epigenetic, and environmental factors.
Main Methods:
- Review of genetic variation data from large population sequencing studies.
- Analysis of allelic diversity in known cardiomyopathy genes and associated modifier genes.
- Conceptual framework development for interpreting complex genetic contributions to cardiomyopathy.
Main Results:
- Significant allelic diversity exists within cardiomyopathy-related genes.
- Genes influencing disease expression also show considerable variation.
- Current understanding of single-gene mutations may be insufficient for complex cardiomyopathies.
Conclusions:
- A nuanced interpretation of genetic factors is essential for understanding cardiomyopathies.
- New approaches are needed to assess the functional impact of multiple genetic variants.
- Future disease models must integrate global genetic burden, epigenetics, and cardiac environment.
Abstract:
Cardiomyopathies are a heterogeneous group of heart muscle diseases associated with heart failure, arrhythmias, and death. Genetic variation has a critical role in the pathogenesis of cardiomyopathies, and numerous single-gene mutations have been associated with distinctive cardiomyopathy phenotypes. Contemporaneously with these discoveries, there has been enormous growth of genome-wide sequencing studies in large populations, data that show extensive genomic variation within every individual. The considerable allelic diversity in cardiomyopathy genes and in genes predicted to impact clinical expression of disease mutations indicates the need for a more nuanced interpretation of single-gene mutation in cardiomyopathies. These findings highlight the need to find new ways to interpret the functional significance of suites of genetic variants, as well as the need for new disease models that take global genetic variant burdens, epigenetic factors, and cardiac environmental factors into account.
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