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Published on: May 1, 2015
Alterations and molecular targeting of the GSK-3 regulator, PI3K, in head and neck cancer
Michelle J Lee1, Nan Jin2, Jennifer R Grandis2
1School of Medicine, University of California, San Francisco, San Francisco, CA, USA.
Abstract:
Head and neck squamous cell carcinoma (HNSCC) is a highly morbid, genetically unstable disease derived from the mucoepithelium of the upper aerodigestive tract. Recent characterization of this disease has implicated the PI3K-Akt-mTOR pathway as one of the most frequently dysregulated pathways. As such, there are several classes of PI3K inhibitors currently undergoing clinical trials. In this article, we review the PI3K pathway, mutations of this pathway in HNSCC, drugs that target PI3K, the impact of these agents on the PI3K and GSK-3 signaling axes, ongoing clinical trials evaluating PI3K inhibitors, and the challenges of using these drugs in the clinic. This article is part of a Special Issue entitled: GSK-3 and related kinases in cancer, neurological and other disorders edited by James McCubrey, Agnieszka Gizak and Dariusz Rakus.
Insights
Head and neck squamous cell carcinoma (HNSCC) involves the PI3K-Akt-mTOR pathway. This review covers PI3K inhibitors, their clinical trials, and challenges in treating HNSCC.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Head and neck squamous cell carcinoma (HNSCC) is a significant cancer with high morbidity.
- The PI3K-Akt-mTOR pathway is frequently dysregulated in HNSCC, making it a therapeutic target.
- Understanding this pathway is crucial for developing effective HNSCC treatments.
Purpose of the Study:
- To review the PI3K pathway and its mutations in HNSCC.
- To discuss PI3K inhibitors, their mechanisms, and clinical trials.
- To explore the challenges associated with PI3K inhibitor therapy in HNSCC.
Main Methods:
- Literature review of PI3K pathway in HNSCC.
- Analysis of PI3K inhibitors and their impact on signaling axes (PI3K, GSK-3).
- Summary of ongoing clinical trials and therapeutic challenges.
Main Results:
- The PI3K-Akt-mTOR pathway is a key player in HNSCC pathogenesis.
- Various PI3K inhibitors are in clinical development for HNSCC.
- The clinical application of PI3K inhibitors presents specific challenges.
Conclusions:
- Targeting the PI3K pathway offers a promising therapeutic strategy for HNSCC.
- Further research is needed to optimize PI3K inhibitor efficacy and overcome resistance.
- Clinical trials are essential to evaluate the safety and effectiveness of these agents.
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