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Microfluidics-based High-throughput Circulating Tumor Cell Sorting and Single-cell Sequencing Technology
Published on: November 14, 2025
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Brain tumor cell line authentication, an efficient alternative to capillary electrophoresis by using a
Qian An1, Helen L Fillmore, Mikaella Vouri
1Corresponding Author: Dr. Qian An, MD, PhD, School of Pharmacy and Biomedical Sciences, University of Portsmouth, St Michael's Building, White Swan Road, Portsmouth PO1 2DT, UK. qian.an@port.ac.uk.
Neuro-Oncology
|December 17, 2013
Summary
A new microfluidic electrophoresis method offers a fast and affordable alternative for cell line authentication using short tandem repeat (STR) analysis. This technique ensures reliable DNA fingerprinting, crucial for maintaining cell line integrity.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Cell line authentication is critical for research reproducibility.
- Current short tandem repeat (STR)-PCR with fragment length analysis (FLA) via capillary electrophoresis is time-consuming and costly.
- Limited accessibility of capillary electrophoresis facilities hinders many research labs.
Purpose of the Study:
- To evaluate a microfluidic electrophoresis system for STR-PCR fragment analysis.
- To compare the microfluidic method with standard capillary electrophoresis for cell line authentication.
- To establish a cost-effective and accessible alternative for DNA fingerprinting.
Main Methods:
- Utilized the Agilent 2100 Bioanalyzer for microfluidic electrophoresis of STR-PCR fragments.
- Analyzed 10 human genomic loci from various human cell lines (gliomas, astrocyte, lung cancer, rhabdomyosarcoma).
- Compared results with the Applied Biosystems 3130xl Genetic Analyzer using standard capillary electrophoresis.
Main Results:
- The microfluidic method demonstrated high reproducibility and sensitivity in sizing multiple PCR fragments.
- Each cell line yielded a unique DNA profile, confirming its distinct identity.
- DNA fingerprinting across five passage numbers showed excellent reproducibility, indicating no cross-contamination.
Conclusions:
- The microfluidic electrophoresis system provides a straightforward and cost-effective alternative for STR-based cell line authentication.
- This method is valuable for cell banks to ensure the quality and integrity of cell lines.
- Offers a practical solution for accessible and reliable cell line characterization.
