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High-throughput microtiter assay for Hoechst 33342 dye uptake.

Gail M Seigel1, Lorrie M Campbell

  • 1Ross Eye Institute, Department of Ophthalmology, University at Buffalo, 14214 , NY, USA, gseigel@frontiernet.net.

Cytotechnology
|November 13, 2008
PubMed
Summary

Researchers developed a simple 96-well plate assay to screen for Hoechst 33342 dye uptake and exclusion in cells. This method aids in identifying stem cells and chemotherapy-resistant cancer cells without expensive UV flow cytometry.

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Area of Science:

  • Cell Biology
  • Biotechnology
  • Cancer Research

Background:

  • Hoechst 33342 dye exclusion is a hallmark of stem cells and chemotherapy-resistant cancer cells.
  • Traditional methods for identifying these cells, like UV flow cytometry, are costly and inaccessible.
  • A need exists for a simpler, high-throughput screening method.

Purpose of the Study:

  • To develop a novel, high-throughput assay for screening Hoechst 33342 dye uptake and exclusion.
  • To provide an accessible alternative to UV flow cytometry for cell population screening.
  • To facilitate the identification of stem cells and drug-resistant cancer cells.

Main Methods:

  • Development of a 96-well microtiter plate assay for Hoechst dye screening.
  • Assay compatibility with EGFP-expressing cells, commonly used in stem cell research.
  • High-throughput screening of cell populations for dye uptake and exclusion characteristics.

Main Results:

  • A simple and rapid assay for Hoechst dye screening was successfully developed.
  • The assay is compatible with EGFP-expressing cells.
  • The method allows for quick screening of cell populations for dye exclusion properties.

Conclusions:

  • The developed 96-well plate assay offers a simple, high-throughput, and accessible method for screening Hoechst dye uptake.
  • This assay is valuable for rapid screening of clonal stem cell populations and tumor cells.
  • It provides a cost-effective alternative to UV flow cytometry for identifying specific cell populations.