Abstract
N- and T-type voltage-gated calcium channels are key established players in chronic pain. Current work suggests that alternative splicing of these channels constitutes an important aspect in the investigation of their roles in the pathogenesis of chronic pain. Recent N-type channel studies describe a nociceptor-enriched alternatively spliced module responsible for voltage-independent G protein modulation and internalization, which is implicated in the control of distinct nociceptive pathways. On the contrary, although a large body of work has demonstrated that peripheral Cav3.2-encoded T-type currents are involved in several types of chronic pain, little is known with respect to the expression of numerous newly discovered splice variants in specific pain pathways. The elucidation of the new layers of molecular complexity uncovered in N- and T-type channel splice variants and their respective locations and roles in different pain pathways will allow for the development of better therapeutic strategies for the treatment of chronic pain.
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Acknowledgements
LAS is supported by a Marie Curie International Incoming Postdoctoral Fellowship. EB is supported by research grants from the Agence Nationale de la Recherche (ANR-05-NEUR-031-01), the ARC-INCa-2006, the Institut UPSA de la Douleur, the Association Française contre les Myopathies (AFM), and the Fédération pour la Recherche sur le Cerveau (FRC, équipement 2006).
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Swayne, L.A., Bourinet, E. Voltage-gated calcium channels in chronic pain: emerging role of alternative splicing. Pflugers Arch - Eur J Physiol 456, 459–466 (2008). https://doi.org/10.1007/s00424-007-0390-4
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DOI: https://doi.org/10.1007/s00424-007-0390-4