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Updated: Jun 21, 2026
08:49
A 3D Organotypic Melanoma Spheroid Skin Model
Published on: May 18, 2018
Autophagy in cutaneous malignant melanoma
Rossitza Lazova1, Vincent Klump, John Pawelek
1Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520-8059, USA.
Journal of Cutaneous Pathology
|July 21, 2009
Summary
Malignant melanoma cells exhibit high levels of autophagy, a process aiding their survival and potentially driving progression. Inhibiting autophagy may offer a novel therapeutic strategy for melanoma treatment.
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Malignant melanoma is a significant skin cancer.
- Autophagy is a cellular degradation process crucial for nutrient recycling and stress response.
- Endoplasmic reticulum (ER) stress is implicated in melanoma progression and can induce autophagy.
Purpose of the Study:
- To investigate the role and presence of autophagy in malignant melanoma cells.
- To identify the contents of autophagosomes within melanoma cells.
- To explore the therapeutic potential of targeting autophagy in melanoma.
Main Methods:
- Immunohistochemistry using the LC3B marker.
- Electron microscopy.
- Analysis of 12 cases of cutaneous malignant melanoma.
Main Results:
- Malignant melanoma cells, including in situ and invasive types, show high levels of autophagy.
- Autophagosomes contain melanized melanosomes, Golgi 58k protein, and beta1,6-branched oligosaccharides.
- Tumor-associated melanophages also exhibit similar autophagic activity.
- Autophagy may serve as a constitutive metabolic state for invasive and metastatic melanoma.
Conclusions:
- Autophagy is prevalent in malignant melanoma and may contribute to its progression.
- The findings support the link between ER stress and autophagy in melanoma.
- Inhibiting autophagy presents a potential therapeutic avenue for treating malignant melanoma.
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