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Updated: Jun 4, 2026

Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries
Published on: January 22, 2019
[PI3K inhibitor]
Seiji Yano1, Shinji Takeuchi, Tadaaki Yamada
1Division of Medical Oncology Cancer Research Institute, Kanazawa University, Japan.
Abstract:
PI3K-Akt is an important signal transduction pathway which acts downstream from various growth factor receptors. The PI3K-Akt pathway is activated in many types of cancers by several mechanisms, including growth factor receptor activation, loss of PTEN, and PI3K gene mutations. Therefore, PI3K is thought to be an ideal therapeutic target. A large number of PI3K inhibitors are being developed and evaluated in clinical trials.
Insights
The PI3K-Akt pathway is crucial in cancer development and is activated by several mechanisms. Targeting this pathway with PI3K inhibitors is a promising therapeutic strategy currently under clinical investigation.
Area of Science:
- Oncology
- Molecular Biology
- Signal Transduction
Background:
- The Phosphoinositide 3-kinase/Akt (PI3K-Akt) pathway is a key signaling cascade downstream of growth factor receptors.
- Aberrant activation of the PI3K-Akt pathway is implicated in numerous cancers through mechanisms like receptor activation, PTEN loss, and PI3K mutations.
Purpose of the Study:
- To highlight the significance of the PI3K-Akt pathway as a therapeutic target in oncology.
- To review the development and clinical evaluation of PI3K inhibitors.
Main Methods:
- Literature review of PI3K-Akt pathway activation in cancer.
- Overview of current PI3K inhibitor development and clinical trials.
Main Results:
- The PI3K-Akt pathway is frequently dysregulated in various cancer types.
- Multiple PI3K inhibitors have entered clinical trials, indicating therapeutic potential.
Conclusions:
- The PI3K-Akt pathway represents a critical target for cancer therapy.
- Ongoing clinical trials are evaluating the efficacy and safety of PI3K inhibitors for cancer treatment.
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