Chemotactic Effects of TNF and TNF Peptide on Immune Cells
Author Information
Author(s): Tt. Rekdal, Z. Konopski, J. S. Svendsen, J.-O. Winberg, T. Espevik, B. Esterud
Primary Institution: University of Troms
Hypothesis
Does the TNFα 36-62 peptide induce chemotaxis through TNF receptors?
Conclusion
Both TNFα and the TNFα 36-62 peptide induce chemotaxis in immune cells through the p55 and p75 TNF receptors.
Supporting Evidence
- Both TNFα and TNFα 36-62 showed a dose-dependent chemotactic effect on PMN.
- Migration of approximately 120 cells was achieved with either 2 nM TNF or 10 μM TNFα 36-62.
- Chemotaxis was confirmed to be receptor-mediated through p55 and p75.
- Antibodies against p55 and p75 inhibited the chemotactic response.
- TNFα 36-62 did not show cytotoxic activity against fibrosarcoma cells.
Takeaway
This study found that a specific part of a protein called TNF can help certain immune cells move towards areas of inflammation, and it works through two different receptors.
Methodology
The study used molecular modeling and chemotaxis assays to test the effects of TNF and TNFα 36-62 on immune cells.
Limitations
The study may have variations due to differences in blood donors and experimental conditions.
Participant Demographics
Healthy adults were used for blood samples.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Want to read the original?
Access the complete publication on the publisher's website