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Updated: May 3, 2026

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Published on: May 14, 2016
Trabectedin and plitidepsin: drugs from the sea that strike the tumor microenvironment
Carlos M Galmarini1, Maurizio D'Incalci2, Paola Allavena3
1Cell Biology and Pharmacogenomics Department, PharmaMar, Madrid 28770, Spain. cgalmarini@pharmamar.com.
Abstract:
The prevailing paradigm states that cancer cells acquire multiple genetic mutations in oncogenes or tumor suppressor genes whose respective activation/up-regulation or loss of function serve to impart aberrant properties, such as hyperproliferation or inhibition of cell death. However, a tumor is now considered as an organ-like structure, a complex system composed of multiple cell types (e.g., tumor cells, inflammatory cells, endothelial cells, fibroblasts, etc.) all embedded in an inflammatory stroma. All these components influence each other in a complex and dynamic cross-talk, leading to tumor cell survival and progression. As the microenvironment has such a crucial role in tumor pathophysiology, it represents an attractive target for cancer therapy. In this review, we describe the mechanism of action of trabectedin and plitidepsin as an example of how these specific drugs of marine origin elicit their antitumor activity not only by targeting tumor cells but also the tumor microenvironment.
Insights
Cancer therapies are evolving beyond targeting tumor cells alone. Novel marine-derived drugs like trabectedin and plitidepsin also target the complex tumor microenvironment, offering new treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Traditional cancer models focus on genetic mutations in oncogenes and tumor suppressor genes.
- Tumors are now understood as complex organ-like structures involving diverse cell types and an inflammatory stroma.
- The tumor microenvironment plays a critical role in cancer cell survival and progression.
Purpose of the Study:
- To review the mechanism of action of marine-derived drugs.
- To highlight how these drugs target both tumor cells and the tumor microenvironment.
- To underscore the tumor microenvironment as a therapeutic target.
Main Methods:
- Review of existing literature on trabectedin and plitidepsin.
- Analysis of their molecular mechanisms of action.
- Examination of their impact on tumor cells and the tumor microenvironment.
Main Results:
- Trabectedin and plitidepsin exhibit antitumor activity through multifaceted mechanisms.
- These drugs demonstrate efficacy not only against cancer cells but also within the tumor microenvironment.
- The complex interplay within the tumor microenvironment is crucial for drug efficacy.
Conclusions:
- Targeting the tumor microenvironment is a promising strategy in cancer therapy.
- Marine-derived compounds like trabectedin and plitidepsin exemplify this novel therapeutic approach.
- Further research into microenvironment-targeted therapies is warranted.
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