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Calreticulin and the Heart

Calreticulin is an endoplasmic Ca(2+) binding protein and molecular chaperone. As a cardiac embryonic gene, calreticulin is essential for heart development. The protein supports Ca(2+)-dependent signaling events that are critical to cardiomyocyte differentiation and cardiogenesis. The increased expr...

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Detalles Bibliográficos
Autores principales: Groenendyk, Jody, Wang, Wen-An, Robinson, Alison, Michalak, Marek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9179554/
https://www.ncbi.nlm.nih.gov/pubmed/35681417
http://dx.doi.org/10.3390/cells11111722
Descripción
Sumario:Calreticulin is an endoplasmic Ca(2+) binding protein and molecular chaperone. As a cardiac embryonic gene, calreticulin is essential for heart development. The protein supports Ca(2+)-dependent signaling events that are critical to cardiomyocyte differentiation and cardiogenesis. The increased expression of calreticulin and endoplasmic reticulum/sarcoplasmic reticulum Ca(2+) capacity produces cardiomyocytes with enhanced efficiency, and detrimental mechanical stretching of cardiac fibroblasts, leading to cardiac pathology. Deletion of the calreticulin gene in adult cardiomyocytes results in left ventricle dilation, an impaired electrocardiogram, and heart failure. These observations indicate that a well-adjusted endoplasmic reticulum and calreticulin-dependent Ca(2+) pool in cardiomyocytes are critical for the maintenance of proper cardiac function.