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Updated: May 26, 2026

A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
The Akt signaling pathway: an emerging therapeutic target in malignant melanoma
SubbaRao V Madhunapantula1, Paul J Mosca, Gavin P Robertson
1College of Medicine, Pennsylvania State University, Hershey, PA, USA.
Abstract:
Studies using cultured melanoma cells and patient tumor biopsies have demonstrated deregulated PI3 kinase-Akt3 pathway activity in ~70% of melanomas. Furthermore, targeting Akt3 and downstream PRAS40 has been shown to inhibit melanoma tumor development in mice. Although these preclinical studies and several other reports using small interfering RNAs and pharmacological agents targeting key members of this pathway have been shown to retard melanoma development, analysis of early Phase I and Phase II clinical trials using pharmacological agents to target this pathway demonstrate the need for (1) selection of patients whose tumors have PI3 kinase-Akt pathway deregulation, (2) further optimization of therapeutic agents for increased potency and reduced toxicity, (3) the identification of additional targets in the same pathway or in other signaling cascades that synergistically inhibit the growth and progression of melanoma, and (4) better methods for targeted delivery of pharmaceutical agents inhibiting this pathway. In this review we discuss key potential targets in PI3K-Akt3 signaling, the status of pharmacological agents targeting these proteins, drugs under clinical development, and strategies to improve the efficacy of therapeutic agents targeting this pathway.
Insights
Targeting the PI3K-Akt3 pathway shows promise for melanoma treatment. Further research is needed to optimize therapies, identify new targets, and improve drug delivery for better patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Deregulated PI3K-Akt3 pathway activity is observed in approximately 70% of melanomas.
- Preclinical studies show Akt3 and PRAS40 targeting inhibits melanoma development in mice.
- Early clinical trials highlight the need for improved therapeutic strategies.
Purpose of the Study:
- To review key targets within the PI3K-Akt3 signaling pathway in melanoma.
- To discuss the current status of pharmacological agents targeting this pathway.
- To explore strategies for enhancing the efficacy of melanoma therapeutics.
Main Methods:
- Review of preclinical and clinical studies on PI3K-Akt3 pathway inhibitors in melanoma.
- Analysis of existing and investigational pharmacological agents.
- Discussion of patient selection, drug optimization, and delivery strategies.
Main Results:
- The PI3K-Akt3 pathway is a significant target in melanoma, with preclinical success.
- Clinical trials indicate a need for patient stratification based on pathway deregulation.
- Optimization of potency, toxicity, and delivery of targeted agents is crucial.
Conclusions:
- Targeting the PI3K-Akt3 pathway holds therapeutic potential for melanoma.
- Further research should focus on personalized medicine approaches and combination therapies.
- Developing more effective and safer drugs is essential for clinical success.
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