期刊
TRENDS IN CARDIOVASCULAR MEDICINE
卷 23, 期 5, 页码 165-171出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tcm.2012.10.005
关键词
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资金
- NIH [R01 HL062881]
Titin is a giant multi-functional filament that spans half of the sarcomere. Titin's extensible I-band region functions as a molecular spring that provides passive stiffness to cardiac myocytes. Elevated diastolic stiffness is found in a large fraction of heart failure patients and thus understanding the normal mechanisms and pathophysiology of passive stiffness modulation is clinically important. Here we provide first a brief general background on titin including what is known about titin isoforrns and then focus on recently discovered post-translational modifications of titin that alter passive stiffness. We discuss the various kinases that have been shown to phosphorylate titin and address the possible roles of titin phosphorylation in cardiac disease, including heart failure with preserved ejection fraction (HFpEF). (c) 2013 Elsevier Inc. All rights reserved.
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