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Microglia Mediated Neuroinflammation: Focus on PI3K Modulation
Antonia Cianciulli1, Chiara Porro2, Rosa Calvello1
1Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, 70125 Bari, Italy.
Abstract:
Immune activation in the central nervous system involves mostly microglia in response to pathogen invasion or tissue damage, which react, promoting a self-limiting inflammatory response aimed to restore homeostasis. However, prolonged, uncontrolled inflammation may result in the production by microglia of neurotoxic factors that lead to the amplification of the disease state and tissue damage. In particular, specific inducers of inflammation associated with neurodegenerative diseases activate inflammatory processes that result in the production of a number of mediators and cytokines that enhance neurodegenerative processes. Phosphoinositide 3-kinases (PI3Ks) constitute a family of enzymes regulating a wide range of activity, including signal transduction. Recent studies have focused attention on the intracellular role of PI3K and its contribution to neurodegenerative processes. This review illustrates and discusses recent findings about the role of this signaling pathway in the modulation of microglia neuroinflammatory responses linked to neurodegeneration. Finally, we discuss the modulation of PI3K as a potential therapeutic approach helpful for developing innovative therapeutic strategies in neurodegenerative diseases.
Insights
Microglia-driven neuroinflammation in the central nervous system can cause damage. This review explores how phosphoinositide 3-kinases (PI3Ks) impact this process and offers potential therapeutic strategies for neurodegenerative diseases.
Area of Science:
- Neuroscience
- Immunology
- Molecular Biology
Background:
- Microglia are key immune cells in the central nervous system, responding to threats but potentially causing damage if inflammation is prolonged.
- Neurodegenerative diseases are often associated with chronic inflammation and the production of neurotoxic factors by microglia.
- Phosphoinositide 3-kinases (PI3Ks) are crucial intracellular enzymes involved in various cellular activities, including signal transduction.
Purpose of the Study:
- To review recent findings on the role of the PI3K signaling pathway in modulating microglia-mediated neuroinflammation.
- To discuss the implications of PI3K activity in the context of neurodegenerative diseases.
- To explore the potential of targeting PI3K as a therapeutic strategy for neurodegenerative conditions.
Main Methods:
- Literature review of recent studies on PI3K signaling and neuroinflammation.
- Analysis of the role of PI3K in microglia activation and function.
- Discussion of therapeutic interventions targeting PI3K in neurodegeneration models.
Main Results:
- PI3K signaling pathways are implicated in the regulation of microglia's inflammatory responses.
- Dysregulation of PI3K activity can contribute to neurotoxic processes associated with neurodegeneration.
- Specific PI3K isoforms and their downstream targets influence the balance between protective and detrimental microglial functions.
Conclusions:
- The PI3K pathway plays a critical role in the neuroinflammatory responses of microglia.
- Modulating PI3K activity presents a promising avenue for developing novel therapeutic strategies against neurodegenerative diseases.
- Further research into PI3K signaling in microglia could lead to targeted treatments for conditions like Alzheimer's and Parkinson's disease.
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