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Understanding alternative splicing of Cav1.2 calcium channels for a new approach towards individualized medicine

Authors
Journal
Journal of Biomedical Research
1674-8301
Publisher
Journal of Biomedical Research
Publication Date
Volume
24
Issue
3
Identifiers
DOI: 10.1016/s1674-8301(10)60027-9
Keywords
  • Review
Disciplines
  • Biology
  • Medicine
  • Pharmacology

Abstract

Calcium channel blockers (CCBs) are widely used to treat cardiovascular diseases such as hypertension, angina pectoris, hypertrophic cardiomyopathy, and supraventricular tachycardia. CCBs selectively inhibit the inward flow of calcium ions through voltage-gated calcium channels, particularly Cav1.2, that are expressed in the cardiovascular system. Changes to the molecular structure of Cav1.2 channels could affect sensitivity of the channels to blockade by CCBs. Recently, extensive alternative splicing was found in Cav1.2 channels that generated wide phenotypic variations. Cardiac and smooth muscles express slightly different, but functionally important Cav1.2 splice variants. Alternative splicing could also modulate the gating properties of the channels and giving rise to different responses to inhibition by CCBs. Importantly, alternative splicing of Cav1.2 channels may play an important role to influence the outcome of many cardiovascular disorders. Therefore, the understanding of how alternative splicing impacts Cav1.2 channels pharmacology in various diseases and different organs may provide the possibility for individualized therapy with minimal side effects.

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