Journal
NATURE REVIEWS NEUROSCIENCE
Volume 22, Issue 5, Pages 263-274Publisher
NATURE RESEARCH
DOI: 10.1038/s41583-021-00444-w
Keywords
-
Categories
Ask authors/readers for more resources
Evidence from human genetic pain disorders shows that voltage-gated sodium channel alpha-subtypes Nav1.7, Nav1.8 and Nav1.9 play important roles in peripheral pain signaling. Drug development targeting these channels requires a better understanding of their involvement in pain signal transmission.
Evidence from human genetic pain disorders shows that voltage-gated sodium channel alpha-subtypes Nav1.7, Nav1.8 and Nav1.9 are important in the peripheral signalling of pain. Nav1.7 is of particular interest because individuals with Nav1.7 loss-of-function mutations are congenitally insensitive to acute and chronic pain, and there is considerable hope that phenocopying these effects with a pharmacological antagonist will produce a new class of analgesic drug. However, studies in these rare individuals do not reveal how and where voltage-gated sodium channels contribute to pain signalling, which is of critical importance for drug development. More than a decade of research utilizing rodent genetic models and pharmacological tools to study voltage-gated sodium channels in pain has begun to unravel the role of different subtypes. Here, we review the contribution of individual channel subtypes in three key physiological processes necessary for transmission of sensory information to the CNS: transduction of stimuli at peripheral nerve terminals, axonal transmission of action potentials and neurotransmitter release from central terminals. These data suggest that drugs seeking to recapitulate the analgesic effects of loss of function of Nav1.7 will need to be brain-penetrant - which most of those developed to date are not. Different voltage-gated sodium channels contribute to the transmission of painful information. In this Review, Goodwin and McMahon ask which channels are involved in nociceptor transduction, transmission and transmitter release and why individuals with Nav1.7 null mutations have a painless phenotype.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available