Key result
Disrupting the HSP20-PDE4D complex attenuates action potential prolongation and adverse cardiac remodeling in preclinical models.
Why the study?
Phosphorylated heat shock protein 20 is cardioprotective, but the effects of disrupting the HSP20-phosphodiesterase 4D interaction on pathological cardiac remodelling were unclear.
Does peptide disruption of the HSP20-PDE4D complex prevent pathological cardiac remodelling in a mouse model of hypertrophy and hiPSC-CMs?
Does peptide disruption of the HSP20-PDE4D complex prevent pathological cardiac remodelling in a mouse model of hypertrophy and hiPSC-CMs?
Disruption of the HSP20-PDE4D interaction protects against pathological cardiac remodeling in preclinical models of hypertrophy.
Warrants no clinical application yet in hypertrophy; leaves open HSP20-PDE4D disruption as a hypothesis-generating target for translation studies.
Phosphorylated heat shock protein 20 (HSP20) is cardioprotective. Using human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) and a mouse model of pressure overload mediated hypertrophy, we show that peptide disruption of the HSP20-phosphodiesterase 4D (PDE4D) complex results in attenuation of action potential prolongation and protection against adverse cardiac remodelling. The later was evidenced by improved contractility, decreased heart weight to body weight ratio, and reduced interstitial and perivascular fibrosis. This study demonstrates that disruption of the specific HSP20-PDE4D interaction leads to attenuation of pathological cardiac remodelling.
No takes yet. Share an insight, caveat, or question.
Martin et al. (2014) studied Pathological cardiac remodelling and hypertrophy. Peptide disruption of the HSP20-PDE4D complex was evaluated on Action potential prolongation and adverse cardiac remodelling. Peptide disruption of the HSP20-PDE4D complex attenuated action potential prolongation and protected against adverse cardiac remodelling in hiPSC-CMs and a mouse model of hypertrophy.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: