Related Experiment Video
Updated: Feb 3, 2026
Author Spotlight: New Insights into PBMC Mitochondrial Responses Using Fluorespirometry
Published on: May 24, 2024
Comparative Gene Expression Analysis in WM164 Melanoma Cells Revealed That β-β-Dimethylacrylshikonin Leads to ROS
Nadine Kretschmer1, Alexander Deutsch2, Christin Durchschein3
1Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4/1, 8010 Graz, Austria. nadine.kretschmer@uni-graz.at.
Abstract:
Skin cancer is currently diagnosed as one in every three cancers. Melanoma, the most aggressive form of skin cancer, is responsible for 79% of skin cancer deaths and the incidence is rising faster than in any other solid tumor type. Previously, we have demonstrated that dimethylacrylshikonin (DMAS), isolated from the roots of Onosma paniculata (Boraginaceae), exhibited the lowest IC50 values against different tumor types out of several isolated shikonin derivatives. DMAS was especially cytotoxic towards melanoma cells and led to apoptosis and cell cycle arrest. In this study, we performed a comprehensive gene expression study to investigate the mechanism of action in more detail. Gene expression signature was compared to vehicle-treated WM164 control cells after 24 h of DMAS treatment; where 1192 distinct mRNAs could be identified as expressed in all replicates and 89 were at least 2-fold differentially expressed. DMAS favored catabolic processes and led in particular to p62 increase which is involved in cell growth, survival, and autophagy. More in-depth experiments revealed that DMAS led to autophagy, ROS generation, and loss of mitochondrial membrane potential in different melanoma cells. It has been reported that the induction of an autophagic cell death represents a highly effective approach in melanoma therapy.
Insights
Dimethylacrylshikonin (DMAS) effectively targets melanoma cells, inducing autophagy and cell death. This compound shows promise as a novel therapeutic agent for melanoma, a highly aggressive skin cancer.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Skin cancer, particularly melanoma, presents a significant and growing global health challenge.
- Melanoma is the deadliest form of skin cancer, responsible for a high percentage of skin cancer-related deaths.
- Dimethylacrylshikonin (DMAS), a shikonin derivative from *Onosma paniculata*, has shown potent anti-tumor activity.
Purpose of the Study:
- To investigate the detailed mechanism of action of DMAS against melanoma cells.
- To explore the molecular pathways affected by DMAS treatment in melanoma.
- To evaluate the potential of DMAS as a melanoma therapeutic agent.
Main Methods:
- Comprehensive gene expression profiling (mRNA analysis) of DMAS-treated melanoma cells.
- Comparison of gene expression signatures between DMAS-treated and vehicle-treated control cells.
- In-depth analysis of cellular processes including autophagy, reactive oxygen species (ROS) generation, and mitochondrial membrane potential.
Main Results:
- DMAS treatment resulted in significant alterations in gene expression, identifying 1192 distinct mRNAs.
- 89 differentially expressed mRNAs were identified, indicating substantial molecular changes.
- DMAS promoted catabolic processes, increased p62 levels, induced autophagy, generated ROS, and decreased mitochondrial membrane potential in melanoma cells.
Conclusions:
- DMAS exhibits potent anti-melanoma activity through the induction of autophagy and related cellular events.
- The findings support the potential of DMAS as a therapeutic strategy for melanoma.
- Targeting autophagy represents a promising avenue for effective melanoma treatment.
More Related Videos
10:34Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells
Published on: April 14, 2010
09:56Determination of Mitochondrial Membrane Potential and Reactive Oxygen Species in Live Rat Cortical Neurons
Published on: May 23, 2011
Related Concept Videos
01:58Cell Specific Gene Expression
01:02Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids
02:16Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
02:19Export of Mitochondrial and Chloroplast Genes
01:21The Resting Membrane Potential
01:42What is Gene Expression?
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...