Cofilin-1 phosphorylation catalyzed by ERK1/2 alters cardiac actin dynamics in dilated cardiomyopathy caused by lamin A/C gene mutation - Plateforme Post-génomique de la Pitié-Salpêtrière Access content directly
Journal Articles Human Molecular Genetics Year : 2018

Cofilin-1 phosphorylation catalyzed by ERK1/2 alters cardiac actin dynamics in dilated cardiomyopathy caused by lamin A/C gene mutation

Solenne Chardonnet
Alain Schmitt
  • Function : Author
Howard J Worman
  • Function : Author
  • PersonId : 891350

Abstract

Hyper-activation of extracellular signal-regulated kinase (ERK) 1/2 contributes to heart dysfunction in cardiomyopathy caused by mutations in the lamin A/C gene (LMNA cardiomyopathy). The mechanism of how this affects cardiac function is unknown. We show that active phosphorylated ERK1/2 directly binds to and catalyzes the phosphorylation of the actin depolymerizing factor cofilin-1 on Thr25. Cofilin-1 becomes active and disassembles actin filaments in a large array of cellular and animal models of LMNA cardiomyopathy. In vivo expression of cofilin-1, phosphorylated on Thr25 by endogenous ERK1/2 signaling, leads to alterations in left ventricular function and cardiac actin. These results demonstrate a novel role for cofilin-1 on actin dynamics in cardiac muscle and provide a rationale on how increased ERK1/2 signaling leads to LMNA cardiomyopathy.
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Dates and versions

hal-01962065 , version 1 (14-01-2019)

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Maria Chatzifrangkeskou, David Yadin, Thibaut Marais, Solenne Chardonnet, Mathilde Cohen-Tannoudji, et al.. Cofilin-1 phosphorylation catalyzed by ERK1/2 alters cardiac actin dynamics in dilated cardiomyopathy caused by lamin A/C gene mutation. Human Molecular Genetics, 2018, 27 (17), pp.3060-3078. ⟨10.1093/hmg/ddy215⟩. ⟨hal-01962065⟩
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