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Updated: Apr 11, 2026

Teasing Out the Interplay Between Natural Killer Cells and Nociceptor Neurons
Published on: June 30, 2022
Kv3.4 channel function and dysfunction in nociceptors
David M Ritter1, Benjamin M Zemel, Angelo C Lepore
1a Department of Neuroscience ; Sidney Kimmel Medical College at Thomas Jefferson University ; Philadelphia , PA USA.
Abstract:
Recently, we reported the isolation of the Kv3.4 current in dorsal root ganglion (DRG) neurons and described dysregulation of this current in a spinal cord injury (SCI) model of chronic pain. These studies strongly suggest that rat Kv3.4 channels are major regulators of excitability in DRG neurons from pups and adult females, where they help determine action potential (AP) repolarization and spiking properties. Here, we characterized the Kv3.4 current in rat DRG neurons from adult males and show that it transfers 40-70% of the total repolarizing charge during the AP across all ages and sexes. Following SCI, we also found remodeling of the repolarizing currents during the AP. In the light of these studies, homomeric Kv3.4 channels expressed in DRG nociceptors are emerging novel targets that may help develop new approaches to treat neuropathic pain.
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