Flotillin Reorganization in T-Lymphocytes
Author Information
Author(s): Affentranger Sarah, Martinelli Sibylla, Hahn Jonas, Rossy Jérémie, Niggli Verena
Primary Institution: Dept. of Pathology, University of Bern, Switzerland
Hypothesis
The study investigates the mechanisms involved in chemokine-induced flotillin reorganization in human T-lymphocytes and the roles of flotillins in lymphocyte polarization.
Conclusion
Stable flotillin cap formation in the rear of polarized T-lymphocytes requires flotillin heterooligomer formation and direct interactions with the actin cytoskeleton.
Supporting Evidence
- Flotillin-1 and -2 redistribute rapidly to the uropod upon chemotactic stimulation of human T-lymphoblasts.
- Chemokine-induced formation of stable flotillin caps requires integrity and dynamics of the actin cytoskeleton.
- Transfection of T-lymphocytes with flotillin-2-G2A reduces cell polarization and uropod recruitment of endogenous flotillin-1 and PSGL-1.
Takeaway
The study shows that certain proteins called flotillins help T-cells move in the right direction by forming caps at the back of the cell when they are activated.
Methodology
The study used immunofluorescence staining and fluorescence recovery after photobleaching (FRAP) to analyze flotillin reorganization and mobility in T-lymphocytes.
Limitations
The study could not fully explore the impact of flotillin downregulation on T-lymphocyte polarization due to incomplete knockdown.
Participant Demographics
Healthy donor blood was used to isolate T-lymphocytes.
Statistical Information
P-Value
p<0.025
Statistical Significance
p<0.025
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website