Phenotyping and Genotyping of the Ryanodine Receptor-Associated Genetic Diseases Using Peripheral Lymphocytes
Mutations in the genes encoding the ryanodine receptor, a Ca2+ release channel, cause autosomal-dominant diseases of skeletal and cardiac muscle such as malignant hyperthermia (MH), central core disease (CCD), catecholaminergic polymorphic ventricular tachycardia (CPVT) and arrhythmogenic right ventricular dysplasia Type 2 (ARVD2). Although some of these have congenital myopathies, these ryanodine receptor diseases are all pharmacogenetic. Difficulty in phenotyping and genotyping has significantly slowed the progress in clinical and basic research of these genetic diseases. Interestingly, skeletal muscle type (Type 1, RyR1) and cardiac muscle type (Type 2, RyR2) of the ryanodine receptors are expressed in peripheral B and T lymphocytes, respectively. RyR1-mediated Ca2+ response in B cells has been used to develop a non-invasive test to predict susceptibility to MH and CCD. Converging lines of evidence now suggest that RyR1-mediated calcium phenotype in B cells or Epstein-Barr virus-transformed B lymphoblasts reflect the RyR1-mediated phenotype in MHS / CCD muscle. Similarly, RyR2 expressed in T cells is available to study CPVT / FPVT and ARVD2. Therefore, a ryanodine receptor gene-based system that integrates information from cells, transcripts and proteins can be developed using peripheral lymphocytes to study and diagnose the ryanodine receptor diseases. Use of genes expressed in lymphocytes can be extended and applied to other genetic diseases based on functional genomics.
No Supplementary Data
No Article Media
Document Type: Review Article
Affiliations: Department of Anesthesiology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814-4799, USA.
Publication date: June 1, 2004
More about this publication?
- Current Pharmacogenomics provides comprehensive overviews of all current research on pharmacogenomics and pharmacogenetics. All areas of the field from pre-clinical to clinical research are covered, including related areas such as genomics, proteomics, target discovery, bioinformatics and novel diagnostics. This international journal is peer-reviewed and publishes both mini- and full review articles.
The journal has become essential reading for all researchers and clinicians with interests in pharmacogenomics and pharmacogenetics.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites