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. 2001 Sep 7;106(5):619-32.
doi: 10.1016/s0092-8674(01)00483-4.

A diverse family of GPCRs expressed in specific subsets of nociceptive sensory neurons

X Dong  1 , S Han, M J Zylka, M I Simon, D J Anderson
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Free article

A diverse family of GPCRs expressed in specific subsets of nociceptive sensory neurons

X Dong et al. Cell. .
Free article

Abstract

In vertebrates, peripheral chemosensory neurons express large families of G protein-coupled receptors (GPCRs), reflecting the diversity and specificity of stimuli they detect. However, somatosensory neurons, which respond to chemical, thermal, or mechanical stimuli, are more broadly tuned. Here we describe a family of approximately 50 GPCRs related to Mas1, called mrgs, a subset of which is expressed in specific subpopulations of sensory neurons that detect painful stimuli. The expression patterns of mrgs thus reveal an unexpected degree of molecular diversity among nociceptive neurons. Some of these receptors can be specifically activated in heterologous cells by RFamide neuropeptides such as NPFF and NPAF, which are analgesic in vivo. Thus, mrgs may regulate nociceptor function and/or development, including the sensation or modulation of pain.

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