How Gq/11-protein-coupled receptors affect CREB in neuroblastoma cells
Author Information
Author(s): Elizabeth M. Rosethorne, Stefan R. Nahorski, R.A. Challiss
Primary Institution: Department of Cell Physiology and Pharmacology, University of Leicester
Hypothesis
The study investigates the mechanisms involved in CREB phosphorylation after activation of Gq/11-protein-coupled receptors in human SH-SY5Y neuroblastoma cells.
Conclusion
The M3 muscarinic acetylcholine receptor leads to sustained CREB phosphorylation and gene transcription, while the B2 bradykinin receptor causes a transient phosphorylation that does not result in significant transcriptional activation.
Supporting Evidence
- Activation of M3 mACh receptor leads to a sustained increase in CREB phosphorylation.
- Bradykinin receptor activation results in a transient increase in CREB phosphorylation.
- CREB phosphorylation is necessary for CRE-dependent gene transcription.
Takeaway
This study shows that two different receptors can activate a protein that helps control gene activity, but only one of them does it in a way that lasts long enough to change how the cell behaves.
Methodology
The study used human SH-SY5Y neuroblastoma cells to assess CREB phosphorylation through various receptor activations and kinase inhibitors.
Limitations
The study primarily focuses on a single cell line, which may limit the generalizability of the findings to other neuronal contexts.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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