Ferroptosis Mechanisms and Therapeutic Strategies in Melanoma

Ferroptosis is an iron-dependent form of regulated cell death driven by unchecked lipid peroxidation and the accumulation of reactive oxygen species. In melanoma, cells exhibit differential sensitivity to ferroptosis according to their differentiation state, metabolic profile and the status of antioxidant defences. Key regulators include the cystine/glutamate antiporter system Xc–, which imports cystine to sustain glutathione synthesis, and glutathione peroxidase 4 (GPX4), which detoxifies lipid hydroperoxides. Dysregulation of these pathways, together with alterations in iron handling, lipid metabolism and mitochondrial function, underpins vulnerability to ferroptosis. Therapeutic strategies aim either to induce ferroptotic death in therapy-resistant melanoma cells or to overcome adaptive resistance mechanisms. Approaches include small-molecule inducers that inhibit system Xc– or GPX4, targeted degradation of ferroptosis regulators, combination regimens with kinase inhibitors or immunotherapy and the repurposing of approved drugs to modulate key signalling cascades. Exploiting ferroptosis holds promise for addressing metastatic or immunotherapy-refractory melanoma by engaging an orthogonal cell-death programme.

Research from Nature Portfolio

Recent studies have uncovered a feedback loop limiting the efficacy of erastin-induced ferroptosis in melanoma. Activation of ferroptosis triggers the induction of a specific E3 ubiquitin ligase, leading to ubiquitination and degradation of voltage-dependent anion channels on the mitochondrial membrane. Depletion of the ligase enhances channel stability and sensitises melanoma cells to lipid peroxidation and iron-dependent oxidative stress. This work delineates a molecular adaptation that melanoma cells deploy to evade ferroptosis and suggests that blocking the ubiquitin-mediated turnover of these channels could potentiate the activity of ferroptosis inducers.

Ferroptosis Mechanisms and Therapeutic Strategies in Melanoma publication trend

The graph below shows the total number of articles in ferroptosis mechanisms and therapeutic strategies in melanoma across all publications each year (not limited to Nature Index journals).

Technical terms

Ferroptosis: An iron-dependent regulated cell death characterised by lipid peroxide accumulation and membrane damage.

Lipid peroxidation: Oxidative degradation of polyunsaturated fatty acids in cellular membranes leading to destabilisation and cell death.

System Xc–: A plasma-membrane antiporter that imports cystine in exchange for glutamate, crucial for glutathione biosynthesis.

Glutathione peroxidase 4 (GPX4): A selenoenzyme that reduces lipid hydroperoxides to non-toxic lipid alcohols, preventing ferroptosis.

Ubiquitination: A post-translational modification in which ubiquitin is attached to target proteins, often marking them for proteasomal degradation.

References

1. Multi-stage Differentiation Defines Melanoma Subtypes with Differential Vulnerability to Drug-Induced Iron-Dependent Oxidative Stress. Cancer Cell (2018).
2. Targeting ferroptosis in melanoma: cancer therapeutics. Cell Communication and Signaling (2023).
3. Nedd4 ubiquitylates VDAC2/3 to suppress erastin-induced ferroptosis in melanoma. Nature Communications (2020).
4. Ubiquitin‐specific protease 22 controls melanoma metastasis and vulnerability to ferroptosis through targeting SIRT1/PTEN/PI3K signaling. MedComm (2024).
5. Targeting Wnt/β-Catenin Signaling Exacerbates Ferroptosis and Increases the Efficacy of Melanoma Immunotherapy via the Regulation of MITF. Cells (2022).