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Updated: Jun 21, 2026

A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
Inside life of melanoma cell signaling, molecular insights, and therapeutic targets
Jeffrey A Sosman1, Kim A Margolin
1Division of Hematology/Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, 777 Preston Research Building, 2220 Pierce Avenue, Nashville, TN 37232, USA. Jeff.sosman@vanderbilt.edu
Abstract:
Melanoma is one of the fastest growing tumor types in the United States. Immunotherapy and chemotherapy benefit only a few patients with metastatic disease. Therapy targeting a signaling pathway critical to the cancer's growth can provide dramatic benefit in several other malignancies and may be a valuable strategy for advanced melanoma, if drugs with a favorable therapeutic index are effective against essential molecular pathways. One such target is the V600E "gain-of-function" BRAF mutation found in 60% of melanomas; other mutations or molecular alterations cooperate with V600E BRAF, particularly those that cause loss of function of PTEN, upstream of Akt and mammalian target of rapamycin. Rapid development of new agents, a better understanding of the target pathways and mechanisms of resistance, and carefully designed strategies to optimize combinations and sequences of these agents, potentially with chemotherapy or immunotherapy, may ultimately have the potential to overcome the previously insurmountable obstacle of therapy resistance in melanoma.
Insights
Targeting the BRAF V600E mutation in melanoma offers a promising therapeutic strategy. Combination therapies may overcome resistance in advanced melanoma.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Melanoma is a rapidly growing cancer with limited treatment options for metastatic disease.
- Current immunotherapies and chemotherapies benefit only a subset of patients.
- Targeting essential molecular pathways offers a potential strategy for advanced melanoma.
Purpose of the Study:
- To explore the therapeutic potential of targeting specific molecular pathways in advanced melanoma.
- To investigate the role of BRAF V600E mutations and cooperating molecular alterations in melanoma.
- To assess strategies for overcoming therapy resistance in melanoma.
Main Methods:
- Analysis of molecular alterations in melanoma, including BRAF V600E mutations and PTEN loss of function.
- Review of current and emerging targeted therapies and their mechanisms.
- Evaluation of combination and sequential therapy strategies.
Main Results:
- The BRAF V600E mutation is present in 60% of melanomas.
- Cooperating molecular alterations, such as PTEN loss, influence pathway signaling.
- Targeting these pathways may provide significant therapeutic benefit.
Conclusions:
- Targeting the BRAF V600E mutation is a viable strategy for advanced melanoma.
- Understanding cooperating mutations and resistance mechanisms is crucial for effective treatment.
- Optimized combination and sequential therapies hold potential to overcome melanoma resistance.
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