PI3K/Akt/mTOR signaling pathway and targeted therapy for glioblastoma
Xiaoman Li1, Changjing Wu1, Nianci Chen2
1Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China.
Abstract:
Glioblastoma multiform (GBM) is the most common malignant glioma of all the brain tumors and currently effective treatment options are still lacking. GBM is frequently accompanied with overexpression and/or mutation of epidermal growth factor receptor (EGFR), which subsequently leads to activation of many downstream signal pathways such as phosphatidylinositol 3-kinase (PI3K)/Akt/rapamycin-sensitive mTOR-complex (mTOR) pathway. Here we explored the reason why inhibition of the pathway may serve as a compelling therapeutic target for the disease, and provided an update data of EFGR and PI3K/Akt/mTOR inhibitors in clinical trials.
Insights
Glioblastoma multiform (GBM) treatments are limited. Targeting the epidermal growth factor receptor (EGFR) and PI3K/Akt/mTOR pathway shows promise for new GBM therapies, with ongoing clinical trials evaluating these inhibitors.
Area of Science:
- Neuro-oncology
- Molecular Biology
- Cancer Therapeutics
Background:
- Glioblastoma multiform (GBM) is the most aggressive primary brain tumor.
- Effective treatment options for GBM remain limited.
- GBM often exhibits epidermal growth factor receptor (EGFR) overexpression or mutation, activating downstream signaling pathways.
Purpose of the Study:
- To investigate the therapeutic potential of inhibiting the phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway in GBM.
- To provide an updated overview of clinical trials involving EGFR and PI3K/Akt/mTOR inhibitors for GBM treatment.
Main Methods:
- Review of scientific literature on GBM pathogenesis and signaling pathways.
- Analysis of clinical trial data for EGFR and PI3K/Akt/mTOR inhibitors in GBM.
- Exploration of the rationale for targeting the PI3K/Akt/mTOR pathway.
Main Results:
- The PI3K/Akt/mTOR pathway is frequently activated in GBM due to EGFR alterations.
- Inhibition of this pathway represents a promising therapeutic strategy.
- Several EGFR and PI3K/Akt/mTOR inhibitors are currently under investigation in clinical trials for GBM.
Conclusions:
- Targeting the EGFR and PI3K/Akt/mTOR pathway is a rational therapeutic approach for GBM.
- Ongoing clinical trials will determine the efficacy and safety of these targeted therapies.
- Further research is needed to optimize treatment strategies for GBM patients.
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