ErbB1-dependent signalling and vesicular trafficking in primary afferent nociceptors associated with hypersensitivity in neuropathic pain.

Neurobiology of Disease
Rory MitchellSue Fleetwood-Walker

Abstract

Effective analgesic treatment for neuropathic pain remains an unmet need, so previous evidence that epidermal growth factor receptor inhibitors (EGFRIs) provide unexpected rapid pain relief in a clinical setting points to a novel therapeutic opportunity. The present study utilises rodent models to address the cellular and molecular basis for the findings, focusing on primary sensory neurons because clinical pain relief is provided not only by small molecule EGFRIs, but also by the anti-EGFR antibodies cetuximab and panitumumab, which are unlikely to access the central nervous system in therapeutic concentrations. We report robust, rapid and dose-dependent analgesic effects of EGFRIs in two neuropathic pain models, matched by evidence with highly selective antibodies that expression of the EGFR (ErbB1 protein) is limited to small nociceptive afferent neurons. As other ErbB family members can heterodimerise with ErbB1, we investigated their distribution, showing consistent co-expression of ErbB2 but not ErbB3 or ErbB4, with ErbB1 in cell bodies of nociceptors, as well as providing evidence for direct molecular interaction of ErbB1 with ErbB2 in situ. Co-administration of selective ErbB1 and ErbB2 inhibitors produced clear evidenc...Continue Reading

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Citations

Jun 21, 2021·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Yaoyuan LiBaojin Hua
Jun 24, 2021·Journal of Pain and Symptom Management·Marte Grønlie Cameron, Christian Kersten
Jul 11, 2021·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Yaoyuan LiBaojin Hua

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