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Related Concept Videos

Flow Cytometry01:23

Flow Cytometry

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The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
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Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy ATOM
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High-speed 3D imaging flow cytometry with optofluidic spatial transformation.

Masashi Ugawa1, Sadao Ota1

  • 1Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan.

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We developed a high-speed 3D fluorescence imaging technique for flow cytometry. This method captures cells at over 10 m/s, enabling detailed biological structure analysis in fast-flowing samples.

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Area of Science:

  • Biophotonics and Imaging
  • Cell Biology and Flow Cytometry

Background:

  • Three-dimensional (3D) fluorescence imaging is crucial for understanding complex biological structures.
  • Existing 3D imaging techniques are too slow for modern flow cytometry, which operates at high cell velocities (1-10 m/s).

Purpose of the Study:

  • To develop a high-speed 3D fluorescence imaging technique compatible with high-velocity flow cytometry.
  • To enable the capture of optical cross-sections of cells within a single camera frame at unprecedented speeds.

Main Methods:

  • Combined strobe light-sheet excitation with optofluidic spatial transformation.
  • Developed a novel method to capture multiple optical cross-sections of a single cell in one camera frame.

Main Results:

  • Demonstrated successful 3D fluorescence imaging of cells flowing at velocities exceeding 10 m/s.
  • Achieved the highest imaging speed for 3D fluorescence imaging of cells in flow to date.
  • Validated the technique's capability for high-throughput biological sample analysis.

Conclusions:

  • The developed high-speed 3D fluorescence imaging technique overcomes previous velocity limitations in flow cytometry.
  • This technology facilitates the integration of 3D imaging capabilities into standard flow cytometers and cell sorters.
  • Enables advanced cellular analysis and phenotyping in dynamic biological systems.