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The phosphoinositide 3-kinase pathway and cancer
1UCSF Cancer Research Institute, 2340 Sutter Street, Room N319, San Francisco, CA 94115, USA. stokoe@cc.ucsf.edu
Abstract:
Human tumours emerge as the result of multiple genetic and epigenetic aberrations that allow the proto-cancer cell to escape normal social control. Many signal transduction pathways become constitutively active during this process, and one whose importance is increasingly being appreciated involves phosphoinositide 3-kinase (PI3-kinase). This pathway normally regulates important cell decisions such as growth, division, survival and migration, and when deregulated it can confer malignant potential to the ensuing tumour. However, constitutive activation of the PI3-kinase pathway might provide attractive therapeutic targets for the design of small-molecule inhibitors. This review discusses events upstream and downstream of PI3-kinase activity in the PI3-kinase signalling pathway, how PI3-kinase is deregulated in human tumourigenesis, and how this is being targeted clinically.
Insights
Human tumours arise from genetic changes that activate the phosphoinositide 3-kinase (PI3K) pathway. This pathway
Area of Science:
- Oncology
- Molecular Biology
- Cell Signaling
Background:
- Human tumors develop due to genetic and epigenetic alterations.
- Aberrant cell signaling pathways, particularly phosphoinositide 3-kinase (PI3K), are implicated in cancer.
- The PI3K pathway regulates critical cellular functions like growth, survival, and migration.
Purpose of the Study:
- To review the PI3K signaling pathway in human tumorigenesis.
- To discuss the deregulation of PI3K in cancer.
- To explore clinical targeting of the PI3K pathway.
Main Methods:
- Literature review of PI3K signaling.
- Analysis of PI3K deregulation in cancer.
- Overview of therapeutic strategies targeting PI3K.
Main Results:
- Constitutive activation of the PI3K pathway is a hallmark of many human tumors.
- Dysregulation of PI3K signaling contributes to malignant transformation.
- The PI3K pathway presents viable therapeutic targets.
Conclusions:
- Understanding PI3K pathway aberrations is crucial for cancer therapy.
- Targeting PI3K offers a promising strategy for cancer treatment.
- Further research into PI3K inhibitors is warranted for clinical application.
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