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PI3Ks-drug targets in inflammation and cancer
1Institute Biochemistry & Genetics, Department Biomedicine, University of Basel, Mattenstrasse 28, 4058, Basel, Switzerland, Matthias.Wymann@UniBas.CH.
Abstract:
Phosphoinositide 3-kinases (PI3Ks) control cell growth, proliferation, cell survival, metabolic activity, vesicular trafficking, degranulation, and migration. Through these processes, PI3Ks modulate vital physiology. When over-activated in disease, PI3K promotes tumor growth, angiogenesis, metastasis or excessive immune cell activation in inflammation, allergy and autoimmunity. This chapter will introduce molecular activation and signaling of PI3Ks, and connections to target of rapamycin (TOR) and PI3K-related protein kinases (PIKKs). The focus will be on class I PI3Ks, and extend into current developments to exploit mechanistic knowledge for therapy.
Insights
Phosphoinositide 3-kinases (PI3Ks) regulate essential cell functions. Dysregulated PI3K activity drives diseases like cancer and inflammation, highlighting its therapeutic potential.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Phosphoinositide 3-kinases (PI3Ks) are crucial regulators of fundamental cellular processes including growth, proliferation, survival, and migration.
- Aberrant PI3K signaling is implicated in various pathologies, such as cancer and inflammatory/autoimmune diseases, due to its role in promoting tumor growth, angiogenesis, metastasis, and excessive immune cell activation.
Purpose of the Study:
- To provide an overview of the molecular activation and signaling pathways of PI3Ks.
- To explore the connections between PI3Ks, the target of rapamycin (TOR) pathway, and PI3K-related protein kinases (PIKKs).
- To focus on class I PI3Ks and discuss therapeutic strategies based on mechanistic understanding.
Main Methods:
- Literature review and synthesis of existing research on PI3K signaling.
- Analysis of molecular mechanisms underlying PI3K activation and function.
- Exploration of therapeutic targets and strategies related to PI3K pathways.
Main Results:
- PI3Ks orchestrate a wide range of cellular activities vital for normal physiology.
- Overactivation of PI3K signaling contributes significantly to the pathogenesis of cancer and immune-mediated disorders.
- Understanding PI3K pathways offers opportunities for targeted therapeutic interventions.
Conclusions:
- PI3K signaling is a critical determinant of cell fate and function.
- Targeting PI3K pathways holds promise for treating diseases characterized by aberrant PI3K activity.
- Further research into PI3K mechanisms can lead to novel therapeutic developments.
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