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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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Related Experiment Video

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High-resolution Spatiotemporal Analysis of Receptor Dynamics by Single-molecule Fluorescence Microscopy
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Flow cytometry analysis of receptor internalization/shedding.

Antonella Rigo1, Fabrizio Vinante1

  • 1Department of Medicine, Section of Hematology, Cancer Research and Cell Biology Laboratory, University of Verona, Verona, Italy.

Cytometry. Part B, Clinical Cytometry
|June 26, 2016
PubMed
Summary

This study introduces a simple flow cytometry method to track cell receptor trafficking, distinguishing between internalization and shedding. This technique offers a faster, more accessible way to analyze receptor dynamics in cell functions.

Keywords:
CD25CD30CXCR4flow cytometryreceptor internalizationreceptor shedding

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Area of Science:

  • Cell Biology
  • Immunology
  • Cancer Research

Background:

  • Cellular functions like differentiation and chemotaxis depend on regulated membrane receptor trafficking.
  • Receptor internalization and shedding are critical checkpoints controlling cell signaling and responses.

Purpose of the Study:

  • To present a simplified flow cytometry-based method for analyzing receptor internalization versus shedding.
  • To provide a flexible and efficient technique for studying receptor trafficking dynamics.

Main Methods:

  • Utilizes flow cytometry with sequential staining and receptor stimulation.
  • Employs hyperosmolar sucrose and acidic treatment to differentiate internalization from shedding.
  • Avoids complex techniques like confocal microscopy.

Main Results:

  • Demonstrates that receptor internalization maintains fluorescence signal, while shedding leads to signal loss.
  • Establishes a straightforward, two-step flow cytometry protocol for receptor trafficking analysis.
  • Validates the method by studying CXCR4, CD30, and CD25 receptor patterns.

Conclusions:

  • The developed flow cytometry method is effective for studying receptor internalization and shedding.
  • This technique provides valuable insights into receptor trafficking in immunity and cancer.
  • Offers a practical alternative to time-consuming fluorescence and microscopy methods.