ArticleFrontiers in cardiovascular medicine2023
Hypercontractile cardiac phenotype in mice overexpressing the regulatory subunit PR72 of protein phosphatase 2A.
Article in Frontiers in cardiovascular medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 2 citations in OpenAlex.
- PPP2R3A-RGS19 interaction links Wnt/β-catenin signaling to pathological cardiomyocyte apoptosis in heart failure.Molecular biology reports · 2026Article
- Loss of protein phosphatase 2A regulatory subunitFrontiers in cardiovascular medicine · 2024Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
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Abstract
Background: The activity, localization, and substrate specificity of the protein phosphatase 2A (PP2A) heterotrimer are controlled by various regulatory B subunits. PR72 belongs to the B'' gene family and has been shown to be upregulated in human heart failure. However, little is known about the functions of PR72 in the myocardium. Methods: To address this issue, we generated a transgenic mouse model with heart-specific overexpression of PP2A-PR72. Biochemical and physiological methods were used to determine contractility, Ca Results: A 2.5-fold increase in PR72 expression resulted in moderate cardiac hypertrophy. Maximal ventricular pressure was increased in catheterized transgenic mice (TG) compared to wild-type (WT) littermates. This was accompanied by an increased shortening of sarcomere length and faster relaxation at the single-cell level in TG. In parallel with these findings, the peak amplitude of Ca Conclusion: Our results suggest that PP2A-PR72 plays an important role in regulating cardiac contractile function and Ca
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