P2X7 Receptor and Airway Inflammation from Tobacco Smoke
Author Information
Author(s): Eltom Suffwan, Stevenson Christopher S., Rastrick Joseph, Dale Nicole, Raemdonck Kristof, Wong Sissie, Catley Matthew C., Belvisi Maria G., Birrell Mark A.
Primary Institution: Imperial College London
Hypothesis
Modulation of the P2X7/inflammasome axis would attenuate CS-induced inflammation.
Conclusion
The P2X7/caspase 1 axis plays a critical role in cigarette smoke-induced inflammation and may be a therapeutic target for COPD.
Supporting Evidence
- CS exposure increased neutrophils in the airway lumen.
- P2X7 receptor antagonism reduced airway inflammation.
- Caspase 1 activity was higher in lung tissue from COPD patients.
- Inflammation was linked to increased IL-1β and IL-18 levels.
- Knockout of P2X7 receptors attenuated inflammation in mice.
- Human lung samples showed elevated caspase 1 activity in smokers.
Takeaway
This study shows that a specific receptor in our body can make our lungs inflamed when we smoke, and blocking it might help treat lung diseases.
Methodology
Mice were exposed to cigarette smoke to induce inflammation, and the role of the P2X7 receptor was investigated using selective antagonists and knockout models.
Potential Biases
Potential bias in the interpretation of pre-clinical results as they relate to human disease.
Limitations
The study primarily used animal models, and human tissue samples were limited.
Participant Demographics
Mice were used for the experiments; human samples were from smokers and non-smokers.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website