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Updated: Nov 12, 2025
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Analysis of Side Population in Solid Tumor Cell Lines
Published on: February 23, 2021
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Analysis of Side Population in Solid Tumor Cell Lines
Xiaoli Dong1, Yingying Wei1, Tao Xu1
1School of Medicine, Nankai University.
Journal of Visualized Experiments : Jove
|March 15, 2021
Summary
Cancer stem cells (CSCs) drive tumor growth and recurrence. Identifying CSCs using Hoechst 33342 dye and flow cytometry offers a fast, cost-effective method to study tumor stemness properties.
Area of Science:
- Oncology
- Cell Biology
- Biotechnology
Background:
- Cancer stem cells (CSCs) are crucial drivers of tumor growth, metastasis, and recurrence.
- Effective isolation and identification of CSCs are vital for advancing tumor research.
- Current methods for CSC purification include side population (SP) cell analysis.
Purpose of the Study:
- To describe a method for identifying and purifying cancer stem cells (CSCs).
- To detail the use of Hoechst 33342 dye and flow cytometry for SP cell analysis.
- To provide a cost-effective assay for studying CSC stemness properties.
Main Methods:
- Utilizing the dye efflux property of CSCs, mediated by ATP-binding cassette (ABC) transporters.
- Staining cultured tumor cells with Hoechst 33342.
- Analyzing the proportion of side population (SP) cells via flow cytometry.
Main Results:
- The described assay allows for the separation and analysis of SP cells, indicative of CSCs.
- This method leverages the rapid expulsion of Hoechst 33342 dye by CSCs.
- The process is convenient, fast, and cost-effective.
Conclusions:
- The Hoechst 33342 staining and flow cytometry assay is a valuable tool for CSC research.
- This method facilitates the study of factors influencing CSC stemness.
- Understanding CSCs is key to developing more effective cancer therapies.
