Related Experiment Video
Updated: Jun 23, 2026

A Melanoma Patient-Derived Xenograft Model
Published on: May 20, 2019
Mechanism of drug sensitivity and resistance in melanoma
1Department of Biomolecular Science and Biotechnology, University of Milan, Milan, Italy. caterina.laporta@unimi.it
Abstract:
Melanoma is the most aggressive form of skin cancer and advanced stages are inevitably resistant to conventional therapeutic agents. In particular, the inability of undergo apoptosis in response to chemotherapy and other external stimuli poses a selective advantage for tumor progression, metastasis formation as well as resistance to therapy in melanoma. Herein, we will review the molecular mechanisms of sensitivity and/or resistance of the most important drugs used in the treatment of melanoma. Furthermore, the novel strategies to overcome tumor chemoresistance will also be discussed. In particular, we will review the cancer stem cell hypothesis and how the failure of MDR reversal agents might increase the therapeutic index of substrate antineoplastic agents.
Insights
This review explores melanoma drug resistance mechanisms and novel strategies to overcome them. Understanding cancer stem cells and multidrug resistance is key to improving melanoma treatment efficacy.
Area of Science:
- Oncology
- Dermatology
- Molecular Biology
Background:
- Melanoma is an aggressive skin cancer.
- Advanced melanoma is often resistant to conventional therapies.
- Drug resistance hinders effective melanoma treatment.
Purpose of the Study:
- To review molecular mechanisms of drug sensitivity and resistance in melanoma.
- To discuss novel strategies for overcoming chemoresistance.
- To explore the role of cancer stem cells in therapeutic resistance.
Main Methods:
- Literature review of molecular mechanisms.
- Analysis of drug resistance pathways.
- Discussion of novel therapeutic strategies.
Main Results:
- Melanoma cells resist apoptosis, promoting progression and metastasis.
- Multidrug resistance (MDR) is a significant challenge.
- Cancer stem cells contribute to therapeutic failure.
Conclusions:
- Understanding melanoma chemoresistance is crucial for developing effective treatments.
- Novel strategies targeting cancer stem cells and MDR may improve therapeutic outcomes.
- Further research into molecular mechanisms can enhance the therapeutic index of antineoplastic agents.
Related Concept Videos
Treatment Resistant Cancers
Adaptive Mechanisms in Cancer Cells
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Mechanism of Antibiotic Resistance in MRSA

