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Pain
Article . 2019 . Peer-reviewed
License: CC BY NC ND
Data sources: Crossref
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Pain
Article
License: CC BY NC ND
Data sources: UnpayWall
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PubMed Central
Other literature type . 2019
Data sources: PubMed Central
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Pain
Article . 2020
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Nerve growth factor–mediated photoablation of nociceptors reduces pain behavior in mice

Authors: Nocchi L.; Portulano C.; Franciosa F.; Doleschall B.; Panea M.; Roy N.; Maffei M.; +3 Authors

Nerve growth factor–mediated photoablation of nociceptors reduces pain behavior in mice

Abstract

Abstract Nerve growth factor (NGF) and its receptors TrkA and p75 play a key role in the development and function of peripheral nociceptive neurons. Here, we describe novel technology to selectively photoablate TrkA-positive nociceptors through delivery of a phototoxic agent coupled to an engineered NGF ligand and subsequent near-infrared illumination. We demonstrate that this approach allows for on demand and localized reversal of pain behaviors in mouse models of acute, inflammatory, neuropathic, and joint pain. To target peripheral nociceptors, we generated a SNAP-tagged NGF derivative NGFR121W that binds to TrkA/p75 receptors but does not provoke signaling in TrkA-positive cells or elicit pain behaviors in mice. NGFR121W-SNAP was coupled to the photosensitizer IRDye700DX phthalocyanine (IR700) and injected subcutaneously. After near-infrared illumination of the injected area, behavioral responses to nociceptive mechanical and sustained thermal stimuli, but not innocuous stimuli, were substantially reduced. Similarly, in models of inflammatory, osteoarthritic, and neuropathic pain, mechanical hypersensitivity was abolished for 3 weeks after a single treatment regime. We demonstrate that this loss of pain behavior coincides with the retraction of neurons from the skin which then reinnervate the epidermis after 3 weeks corresponding with the return of mechanical hypersensitivity. Thus NGFR121W-SNAP-mediated photoablation is a minimally invasive approach to reversibly silence nociceptor input from the periphery, and control pain and hypersensitivity to mechanical stimuli.

Country
Italy
Keywords

Ablation Techniques, Male, Mice, Inbred BALB C, Photosensitizing Agents, Acute pain; CFA-Induced pain; Chronic pain; NGF; Nociceptor; Osteoartritis; Photoablation; Photosensitizer; Spared nerve injury; TrkA, Nociceptors, CHO Cells, PC12 Cells, Rats, Mice, Inbred C57BL, Mice, Cricetulus, HEK293 Cells, Cricetinae, Nerve Growth Factor, Animals, Humans, Neuralgia, Research Paper, Pain Measurement

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Average
Top 10%
Green
hybrid