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Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies
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Analysis of inflammatory biomarkers by Arrayed Imaging Reflectometry.

Jared A Carter1, Sourabh D Mehta1, Michael V Mungillo1

  • 1Adarza BioSystems, Inc., West Henrietta, NY, United States.

Biosensors & Bioelectronics
|April 9, 2011
PubMed
Summary

Arrayed Imaging Reflectometry (AIR) microarrays offer a rapid, label-free method for profiling serum cytokines. This technology achieves performance comparable to ELISA for 14 biomarkers in a multiplex format.

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Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Immunology

Background:

  • Serum cytokine levels are crucial biomarkers for various health conditions, including infections, cancer, and stress.
  • Current methods for cytokine profiling can be time-consuming and require specific reagents.
  • Developing rapid, label-free techniques is essential for efficient biomarker analysis.

Purpose of the Study:

  • To evaluate the effectiveness of Arrayed Imaging Reflectometry (AIR) microarrays for multiplexed serum cytokine profiling.
  • To assess AIR's performance against established methods like ELISA.
  • To determine the feasibility of using AIR in complex biological matrices.

Main Methods:

  • Utilized Arrayed Imaging Reflectometry (AIR) microarrays for simultaneous detection of multiple serum proteins.
  • Tested AIR performance in buffered bovine serum albumin and varying concentrations of bovine serum.
  • Compared AIR's analytical metrics, including limit of detection, with singleplex ELISA.

Main Results:

  • AIR successfully profiled 14 cytokines and inflammatory biomarkers in a multiplex, chip-based, reagentless format.
  • AIR demonstrated performance metrics comparable to singleplex ELISA.
  • Interferon-gamma (IFN-γ) analysis showed robustness even with up to 20% bovine serum concentration, maintaining a low limit of detection (<10 pg/mL).

Conclusions:

  • AIR microarrays provide a viable, rapid, and label-free solution for multiplexed serum cytokine profiling.
  • The technology is suitable for complex biological samples, showing resilience to high serum concentrations.
  • AIR offers a promising alternative to traditional methods for biomarker analysis in diverse health-related applications.