STAT3: a Link Between CaMKII-βIV-spectrin and Maladaptive Remodeling?

Overview

Journal J Clin Invest

Specialty General Medicine

Date 2018 Nov 13

PMID 30418170

Citations 3

Authors

Mohit Hulsurkar

Ann P Quick

Xander Ht Wehrens

Affiliations

Soon will be listed here.

Abstract

βIV-Spectrin, along with ankyrin and Ca2+/calmodulin-dependent kinase II (CaMKII), has been shown to form local signaling domains at the intercalated disc, while playing a key role in the regulation of Na+ and K+ channels in cardiomyocytes. In this issue of the JCI, Unudurthi et al. show that under chronic pressure overload conditions, CaMKII activation leads to βIV-spectrin degradation, resulting in the release of sequestered STAT3 from the intercalated discs. This in turn leads to dysregulation of STAT3-mediated gene transcription, maladaptive remodeling, fibrosis, and decreased cardiac function. Overall, this study presents interesting findings regarding the role of CaMKII and βIV-spectrin under physiological as well as pathological conditions.

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