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Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols
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A comparative study of two separation methods to isolate monocytes.

Ronald Weiss1, Wilhelm Gerdes2, Franziska Leonhardt3

  • 1Institute of Clinical Immunology, Medical Faculty, University of Leipzig, Germany.

Cytometry. Part a : the Journal of the International Society for Analytical Cytology
|November 1, 2018
PubMed
Summary
This summary is machine-generated.

This study compares Traceless Affinity Cell Selection (TACS®) and Magnetic Activated Cell Sorting (MACS®) for isolating human monocytes. TACS® yields label-free cells suitable for functional analysis, while MACS® offers higher cell recovery.

Keywords:
MACS®TACS®cell separationdendritic cellsmonocytes

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Isolation, Transfection, and Culture of Primary Human Monocytes
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Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Efficient isolation of specific blood cells is crucial for understanding their roles in health and disease.
  • Current methods for isolating human monocytes require robust and effective techniques.

Purpose of the Study:

  • To compare the efficacy of Traceless Affinity Cell Selection (TACS®) and Magnetic Activated Cell Sorting (MACS®) for isolating human monocytes.
  • To evaluate the quality and functionality of monocytes isolated by both methods and their subsequent differentiation into dendritic cells (DCs).

Main Methods:

  • Human monocytes were isolated from whole blood and buffy coats using TACS® (positive selection, immune affinity chromatography with low affinity Fab-fragments) and MACS® (positive selection with magnetic beads and high affinity antibodies).
  • Isolated monocytes were differentiated into dendritic cells (DCs).
  • Cell purity, quality, and function were assessed, including CD1a expression on DCs.

Main Results:

  • Both TACS® and MACS® yielded high-quality and pure functional monocytes.
  • Monocyte-derived DCs showed comparable differentiation results, with elevated CD1a expression when using TACS®-isolated monocytes.
  • TACS® provided label-free cells, whereas MACS®-isolated cells retained cell-specific labels.

Conclusions:

  • TACS® may be advantageous for preparing monocytes and monocyte-derived DCs for functional analyses due to label-free cells.
  • MACS® appears to be more effective for achieving higher monocyte recovery rates.
  • Both methods are suitable for obtaining functional monocytes, with distinct benefits for specific downstream applications.