Evaluation Statement (5 February 2025)
Pannexin (Panx) channels are a family of poorly understood large-pore channels that mediate the release of substrates like ATP from cells, yet the physiological stimuli that activate these channels remain poorly understood. The preprint by Henze et al. describes an elegant approach wherein activity-guided fractionation of mouse liver led to the discovery that lysophospholipids (LPCs) activate Panx1 and Panx2 channels expressed in cells or reconstituted into liposomes. The authors provide evidence that LPC-mediated activation of Panx1 is involved in joint pain and that Panx1 channels are required for the established effects of LPC on inflammasome activation in monocytes, suggesting that Panx channels play a role in inflammatory pathways. Overall, this important study reports a previously unanticipated mechanism wherein LPCs directly activate Panx channels.
Biophysics Colab recommends this study to scientists investigating phospholipids, Panx channels, purinergic signalling and inflammation.
Biophysics Colab has evaluated this study as one that meets the following criteria:
- Rigorous methodology
- Transparent reporting
- Appropriate interpretation
(This evaluation refers to version 3 of this preprint, which has been revised in response to peer review of versions 1 and 2.)