Control of Axonal Growth and Regeneration of Sensory Neurons by the p110δ PI 3-Kinase
Author Information
Author(s): Eickholt Britta J., Ahmed Aminul I., Davies Meirion, Papakonstanti Evangelia A., Pearce Wayne, Starkey Michelle L., Bilancio Antonio, Need Anna C., Smith Andrew J. H., Hall Susan M., Hamers Frank P., Giese Karl P., Bradbury Elizabeth J., Vanhaesebroeck Bart
Primary Institution: King's College London
Hypothesis
The study investigates the role of p110δ PI3K in axonal growth and regeneration in sensory neurons.
Conclusion
p110δ is crucial for efficient axonal elongation and regeneration in the nervous system.
Supporting Evidence
- p110δ is highly expressed in the nervous system, particularly in sensory neurons.
- Inactivation of p110δ leads to increased vulnerability of neurons to growth cone collapse.
- Loss of p110δ activity impairs axonal regeneration following nerve injury.
- Pharmacological inhibition of ROCK can restore axonal extension defects in neurons lacking p110δ.
Takeaway
This study shows that a specific protein helps nerve cells grow and heal after injury, which is important for recovery.
Methodology
The study used genetic and pharmacological methods to inactivate p110δ in mice and assessed the effects on axonal growth and regeneration.
Limitations
The study primarily focuses on p110δ and does not explore the roles of other PI3K isoforms in detail.
Participant Demographics
Mice were used in the study, specifically p110δ kinase-inactive and wild-type mice.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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