Mechanically silent nociceptors are sensory afferents that are insensitive to noxious mechanical stimuli under normal conditions but become sensitized to such stimuli during inflammation. Using RNA-sequencing and quantitative RT-PCR we demonstrate that inflammation upregulates the expression of the transmembrane protein TMEM100 in silent nociceptors and electrophysiology revealed that over-expression of TMEM100 is required and sufficient to un-silence silent nociceptors in mice. Moreover, we show that mice lacking TMEM100 do not develop secondary mechanical hypersensitivity—i.e., pain hypersensitivity that spreads beyond the site of inflammation—during knee joint inflammation and that AAV-mediated overexpression of TMEM100 in articular afferents in the absence of inflammation is sufficient to induce mechanical hypersensitivity in remote skin regions without causing knee joint pain. Thus, our work identifies TMEM100 as a key regulator of silent nociceptor un-silencing and reveals a physiological role for this hitherto enigmatic afferent subclass in triggering spatially remote secondary mechanical hypersensitivity during inflammation.

Role of TMEM100 in mechanically insensitive nociceptor un-silencing / Nees, T. A.; Wang, N.; Adamek, P.; Zeitzschel, N.; Verkest, C.; La Porta, C.; Schaefer, I.; Virnich, J.; Balkaya, S.; Prato, V.; Morelli, C.; Begay, V.; Lee, Y. J.; Tappe-Theodor, A.; Lewin, G. R.; Heppenstall, P. A.; Taberner, F. J.; Lechner, S. G.. - In: NATURE COMMUNICATIONS. - ISSN 2041-1723. - 14:1(2023), pp. 1-17. [10.1038/s41467-023-37602-w]

Role of TMEM100 in mechanically insensitive nociceptor un-silencing

Heppenstall P. A.;
2023-01-01

Abstract

Mechanically silent nociceptors are sensory afferents that are insensitive to noxious mechanical stimuli under normal conditions but become sensitized to such stimuli during inflammation. Using RNA-sequencing and quantitative RT-PCR we demonstrate that inflammation upregulates the expression of the transmembrane protein TMEM100 in silent nociceptors and electrophysiology revealed that over-expression of TMEM100 is required and sufficient to un-silence silent nociceptors in mice. Moreover, we show that mice lacking TMEM100 do not develop secondary mechanical hypersensitivity—i.e., pain hypersensitivity that spreads beyond the site of inflammation—during knee joint inflammation and that AAV-mediated overexpression of TMEM100 in articular afferents in the absence of inflammation is sufficient to induce mechanical hypersensitivity in remote skin regions without causing knee joint pain. Thus, our work identifies TMEM100 as a key regulator of silent nociceptor un-silencing and reveals a physiological role for this hitherto enigmatic afferent subclass in triggering spatially remote secondary mechanical hypersensitivity during inflammation.
2023
14
1
1
17
1899
Nees, T. A.; Wang, N.; Adamek, P.; Zeitzschel, N.; Verkest, C.; La Porta, C.; Schaefer, I.; Virnich, J.; Balkaya, S.; Prato, V.; Morelli, C.; Begay, V.; Lee, Y. J.; Tappe-Theodor, A.; Lewin, G. R.; Heppenstall, P. A.; Taberner, F. J.; Lechner, S. G.
File in questo prodotto:
File Dimensione Formato  
s41467-023-37602-w.pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 5.58 MB
Formato Adobe PDF
5.58 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/135115
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact