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Effective Detection of Hoechst Side Population Cells by Flow Cytometry

Effective Detection of Hoechst Side Population Cells by Flow Cytometry

Published on: August 23, 2024

Supercontinuum white light lasers for flow cytometry.

William G Telford¹, Fedor V Subach, Vladislav V Verkhusha

¹Experimental Transplantation and Immunology Branch, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA. telfordw@mail.nih.gov

Cytometry. Part a : the Journal of the International Society for Analytical Cytology

|December 17, 2008

Summary

This summary is machine-generated.

Supercontinuum white light lasers overcome flow cytometry

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Area of Science:

Flow cytometry
Laser technology
Cellular analysis

Background:

Traditional flow cytometry is limited by discrete laser excitation wavelengths.
This restricts the range of fluorescent probes usable for cellular analysis.

Purpose of the Study:

To investigate the use of supercontinuum (SC) white light lasers as an excitation source in flow cytometry.
To assess if SC lasers can expand excitation wavelength options for fluorescent probes.

Main Methods:

Integrated a supercontinuum white light laser into a commercial flow cytometry platform.
Used bandpass filters to select specific wavelengths (480-700+ nm) from the SC laser.
Analyzed cells labeled with various fluorescent probes and fluorescent proteins.

Main Results:

SC white light laser excitation demonstrated comparable sensitivity to traditional lasers for multiple probes.
Sensitivity assessments using bead arrays confirmed similar detection levels between SC and traditional sources.
SC laser bandwidths provided similar excitation levels for a wide range of fluorescent probes and proteins.

Conclusions:

Supercontinuum white light lasers offer a flexible excitation source for flow cytometry.
This technology removes the limitation of discrete excitation wavelengths, enabling broader probe compatibility.
SC lasers allow for "fine-tuning" of excitation wavelengths, enhancing cellular analysis capabilities.