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Related Experiment Video

Updated: Jul 4, 2026

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction
03:38

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Published on: October 6, 2022

Aptamer-facilitated biomarker discovery (AptaBiD).

Maxim V Berezovski1, Matthias Lechmann, Michael U Musheev

  • 1Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada.

Journal of the American Chemical Society
|June 19, 2008
PubMed
Summary

A new aptamer-facilitated biomarker discovery (AptaBiD) method identifies cell surface biomarkers. This technology successfully distinguished mature and immature dendritic cells, revealing novel biomarkers.

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Area of Science:

  • Biotechnology
  • Proteomics
  • Immunology

Background:

  • Identifying cell surface biomarkers is crucial for understanding cell states and functions.
  • Existing methods for biomarker discovery can be limited in specificity and efficiency.

Purpose of the Study:

  • To introduce and validate a novel technology, aptamer-facilitated biomarker discovery (AptaBiD), for identifying cell surface biomarkers.
  • To discover novel surface biomarkers that differentiate between mature and immature dendritic cells.

Main Methods:

  • Selection of DNA aptamers that specifically bind to mature and immature dendritic cells.
  • Utilizing aptamers for cell separation via flow cytometry and magnetic beads.
  • Isolation of biomarkers using aptamers followed by identification using mass spectrometry.

Main Results:

  • Developed DNA aptamer pools with a ~100-fold difference in binding strength for mature versus immature dendritic cells.
  • Demonstrated high efficiency of aptamer pools in separating mature from immature dendritic cells.
  • Mass spectrometry analysis of aptamer-isolated proteins revealed previously unknown biomarkers for both cell types.

Conclusions:

  • AptaBiD is an effective technology for discovering cell surface biomarkers.
  • The study successfully identified novel biomarkers distinguishing mature and immature dendritic cells.
  • This approach has significant potential for advancing cell state analysis and diagnostics.