Protocol for analysis of miRNAs in human melanoma cells
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Updated: Sep 19, 2025
An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
Evelyn Lattmann1, Tessa Guggiari1, Patrick Turko1
1Department of Dermatology, University of Zurich, University Hospital Zurich, 8952 Schlieren, Switzerland.
Abstract:
MicroRNAs (miRNAs) significantly contribute to melanoma plasticity, a key factor in metastasis and therapy resistance. Here, we provide a protocol for analysis of miRNAs in human melanoma cells. We describe two approaches for plating cells, either using cell chambers or attaching cells to microscopy slides by means of centrifugation. We first focus on cell pretreatment and staining procedures using the RNAscope Plus small RNA-RNA high-definition (RNAscope Plus smRNA-RNA HD) assay. We then detail the quantitative analysis of miRNA expression and co-localization.
Insights
This study presents a protocol for analyzing microRNAs (miRNAs) in human melanoma cells, focusing on expression and co-localization. The method aids in understanding melanoma plasticity, metastasis, and therapy resistance.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) play a crucial role in melanoma's ability to change and adapt, which drives its spread and resistance to treatment.
- Understanding miRNA expression is vital for developing new melanoma therapies.
Purpose of the Study:
- To provide a detailed protocol for the analysis of microRNAs in human melanoma cells.
- To establish methods for quantifying miRNA expression and co-localization within melanoma cells.
Main Methods:
- The protocol details two cell-plating techniques: using cell chambers or slide-based centrifugation.
- It outlines cell pretreatment and staining using the RNAscope Plus small RNA-RNA high-definition (smRNA-RNA HD) assay.
- Quantitative analysis of miRNA expression and co-localization is described.
Main Results:
- The protocol enables precise analysis of miRNA expression patterns in melanoma cells.
- It allows for the assessment of miRNA co-localization, providing insights into their regulatory networks.
- The RNAscope Plus smRNA-RNA HD assay is utilized for high-definition visualization.
Conclusions:
- This protocol offers a robust method for studying microRNAs in melanoma.
- It supports research into melanoma plasticity, metastasis, and therapeutic resistance mechanisms.
- The findings facilitate a deeper understanding of miRNA's role in melanoma progression.
