The junctophilin family of proteins: from bench to bedside.

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2014-06

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Abstract

Excitable tissues rely on junctional membrane complexes to couple cell surface signals to intracellular channels. The junctophilins have emerged as a family of proteins critical in coordinating the maturation and maintenance of this cellular ultrastructure. Within skeletal and cardiac muscle, junctophilin 1 and junctophilin 2, respectively, couple sarcolemmal and intracellular calcium channels. In neuronal tissue, junctophilin 3 and junctophilin 4 may have an emerging role in coupling membrane neurotransmitter receptors and intracellular calcium channels. These important physiological roles are highlighted by the pathophysiology which results when these proteins are perturbed, and a growing body of literature has associated junctophilins with the pathogenesis of human disease.

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10.1016/j.molmed.2014.02.004

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Landstrom, AP, DL Beavers and XHT Wehrens (2014). The junctophilin family of proteins: from bench to bedside. Trends in molecular medicine, 20(6). pp. 353–362. 10.1016/j.molmed.2014.02.004 Retrieved from https://hdl.handle.net/10161/20313.

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Landstrom

Andrew Paul Landstrom

Associate Professor of Pediatrics

Dr. Landstrom is a physician scientist who specializes in the care of children and young adults with arrhythmias, heritable cardiovascular diseases, and sudden unexplained death syndromes. As a clinician, he is trained in pediatric cardiology with a focus on arrhythmias and genetic diseases of the heart.  He specializes in caring for patients with heritable arrhythmia (channelopathies) such as long QT syndrome, Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia, and short QT syndrome.  He also specializes in the evaluation of children following a cardiac arrest or after the sudden and unexplained death of a family member.  He has expertise in cardiovascular genetics and uses it to identify individuals in a family who may be at risk of a disease, even if all clinical testing is negative.  As a scientist, he is trained in genetics and cell biology.  He runs a research lab exploring the genetic and molecular causes of arrhythmias, sudden unexplained death syndromes, and heart muscle disease (cardiomyopathies).  He utilizes patient-derived induced pluripotent stem cells and genetic mouse models to identify the mechanisms of cardiovascular genetic disease with the goal of developing novel therapies.


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