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Updated: Dec 29, 2025
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Co-culture of Glioblastoma Stem-like Cells on Patterned Neurons to Study Migration and Cellular Interactions
Published on: February 24, 2021
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Cytoskeleton and Nucleotide Signaling in Glioma C6 Cells
Wanda Kłopocka1, Jarosław Korczyński2, Paweł Pomorski2
1Faculty of Biology and Environmental Sciences, Cardinal Stefan Wyszynski University, Warsaw, Poland. w.klopocka@uksw.edu.pl.
Advances in Experimental Medicine and Biology
|February 9, 2020
Summary
The P2Y2 receptor in glioma cells regulates actin cytoskeleton dynamics. UTP stimulation reverses Rho-kinase inhibitor effects via calcium and Rac1 pathways, restoring cell morphology.
Area of Science:
- Cell Biology
- Molecular Biology
- Neuroscience
Background:
- Glioma cell migration relies on actin cytoskeleton dynamics.
- The P2Y2 nucleotide receptor (P2Y2R) influences cellular processes.
- RhoA/ROCK signaling is crucial for cell shape and migration.
Purpose of the Study:
- To elucidate P2Y2R-mediated signaling pathways regulating actin dynamics in glioma C6 cells.
- To investigate the compensatory mechanisms following Rho-kinase inhibition.
Main Methods:
- Utilized glioma C6 cells.
- Investigated signaling pathways involving P2Y2R, G-proteins, PIP2, Rac1, and RhoA.
- Employed Rho-kinase inhibitors and UTP stimulation.
- Analyzed F-actin organization, cell shape, and protein phosphorylation (myosin II, cofilin).
Main Results:
- P2Y2R activation regulates PIP2 levels, affecting actin binding proteins, calcium response, and Rac1/RhoA activation.
- RhoA/ROCK pathway inhibition alters F-actin, cell shape, and reduces phosphorylated myosin II and cofilin.
- UTP stimulation of P2Y2R reverses these changes via calcium/MLC kinase and Rac1/PAK/LIMK pathways.
- Rac1 activation, dependent on Gαo, αvβ5 integrins, and P2Y2Rs, is essential for cell morphology recovery.
Conclusions:
- P2Y2R signaling pathways, including calcium and Rac1 cascades, are critical for restoring actin organization and cell shape in glioma cells after Rho-kinase inhibition.
- Rac1 activation is a key downstream event for maintaining normal cell morphology and migration-associated structures.
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