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A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
Latest approved therapies for metastatic melanoma: what comes next?
1Department of Oncology, Stem Cells and Nanomedicine, Fluorotronics, Inc., 2453 Cades Way, Building C, San Diego, CA 92081, USA.
Abstract:
Nowadays, oncogene-directed therapy and immunotherapy represent the two most promising avenues for patients with metastatic melanoma. The recent oncogene-directed therapeutic, vemurafenib, usually produces high level of tumor shrinkage and survival benefits in many patients with B-RAF (V600E) mutant melanomas, although the fast and high degrees of responses are likely short-lived. Conversely, the newly-approved immunotherapeutic, ipilimumab, produces durable responses in patients presenting CTLA-4 T-cell surface protein. Nevertheless, the possible synergy in combining these two therapeutic strategies primarily rely on the rational design of medical protocols (e.g., sequence and timing of agent administration; drug selectivity; compatibility of combined therapies i.e., adoptive T cell or agents, i.e., MEK inhibitor trametinib, PD-1 and PDL-1 blockers). Improved therapeutic protocols shall overcome therapeutic limitations such as the (i) tolerability and safety (i.e., minimal toxic side-effects); (ii) progression free survival (e.g., reduced relapse disease frequency); (iii) duration response (i.e., decreased drug resistance). Eventually, multidisciplinary approaches are still requested (e.g., genomics for personalized medicine, nanomedicine to overcome low free-drug bioavailability and targeting, systematic search of "melanoma stem cells" to enhance the prognosis and develop more valuable theranostics). In this paper, I will mainly present and discuss the latest and promising treatments for advanced cutaneous melanomas.
Insights
Advanced melanoma treatments combine targeted therapies like vemurafenib with immunotherapies such as ipilimumab. Optimizing treatment protocols aims to improve safety, survival, and response duration for metastatic melanoma patients.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- Metastatic melanoma treatment advances include oncogene-directed therapy (e.g., vemurafenib for BRAF V600E mutations) and immunotherapy (e.g., ipilimumab targeting CTLA-4).
- While vemurafenib offers rapid tumor shrinkage, responses can be short-lived. Ipilimumab can provide durable responses but requires careful administration.
- Combining these strategies holds promise but necessitates rational design of protocols to maximize synergy and minimize limitations.
Purpose of the Study:
- To review and discuss the latest and most promising treatment strategies for advanced cutaneous melanoma.
- To explore the potential synergy between oncogene-directed therapies and immunotherapies.
- To highlight the importance of optimizing therapeutic protocols for improved patient outcomes.
Main Methods:
- Literature review of recent advancements in melanoma treatment.
- Discussion of current targeted therapies (e.g., vemurafenib) and immunotherapies (e.g., ipilimumab).
- Analysis of factors influencing combination therapy protocols, including drug sequencing, compatibility, and safety.
Main Results:
- Vemurafenib shows high initial efficacy in BRAF-mutant melanoma but often leads to short-lived responses.
- Ipilimumab demonstrates potential for durable responses in melanoma patients.
- Synergistic combinations require careful protocol design to address tolerability, safety, progression-free survival, and response duration.
Conclusions:
- Optimized combination therapies integrating targeted agents and immunotherapies are crucial for advancing metastatic melanoma treatment.
- Addressing limitations such as drug resistance and toxicity through rational protocol design is essential.
- Multidisciplinary approaches, including genomics and nanomedicine, are vital for personalized and effective melanoma theranostics.
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