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Phosphoinositide 3-kinase signalling in breast cancer: how big a role might it play?
1School of Animal and Microbial Sciences, University of Reading, Reading, UK. M.J.Fry@reading.ac.uk
Abstract:
Phosphoinositide 3-kinase (PI3K) was first identified as a lipid kinase activity associated with the products of viral oncogenes and with activated protein-tyrosine kinases. Since those early studies, the PI3K superfamily has grown to embrace at least 12 structurally and functionally related enzymes present in the human genome, some of which have protein kinase activity but not lipid kinase activity. Evidence is emerging that PI3K superfamily members, and components of PI3K signalling, play a role in the development of many human cancers. In this review, the PI3K family of enzymes and their signalling is reviewed, with particular reference to possible involvement in breast cancer.
Insights
Phosphoinositide 3-kinase (PI3K) enzymes are crucial in cell signaling and implicated in numerous cancers. This review details PI3K family roles, particularly in breast cancer development.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Phosphoinositide 3-kinase (PI3K) initially identified via viral oncogenes and tyrosine kinases.
- The PI3K superfamily now comprises at least 12 human enzymes, some with protein kinase, not lipid kinase, activity.
- Growing evidence links PI3K superfamily members and signaling pathways to human cancer development.
Purpose of the Study:
- To review the PI3K family of enzymes.
- To examine PI3K signaling pathways.
- To specifically address the involvement of PI3K in breast cancer.
Main Methods:
- Literature review of PI3K family enzymes.
- Analysis of PI3K signaling pathways.
- Focus on studies related to breast cancer.
Main Results:
- PI3K superfamily encompasses diverse enzymes with varied activities.
- PI3K signaling is a key pathway in cellular regulation.
- Significant association between PI3K and various human cancers, including breast cancer.
Conclusions:
- PI3K enzymes and their signaling pathways are critical in cancer biology.
- Further research into PI3K is essential for understanding and treating breast cancer.
- Targeting PI3K pathways may offer therapeutic strategies for cancer treatment.