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Related Experiment Video

Updated: Sep 29, 2025

Ultra-High-Speed Western Blot using Immunoreaction Enhancing Technology

Ultra-High-Speed Western Blot using Immunoreaction Enhancing Technology

Published on: September 26, 2020

Under-5-Minute Immunoblot Assays by Vortex Fluidic Device Acceleration.

Emily C Sanders¹, Sanjana R Sen¹, Aidan A Gelston¹

¹Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025, USA.

Angewandte Chemie (International Ed. in English)

|March 25, 2022

Summary

A novel immunoblot assay using a vortex fluidic device (VFD) enables rapid, inexpensive, and robust protein quantification. This breakthrough advances personalized medicine by bringing complex biomarker analysis to the point-of-care.

Keywords:

Diagnostics Immunoassay Vortex Fluidics

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Last Updated: Sep 29, 2025

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Area of Science:

Biomedical Engineering
Analytical Chemistry
Point-of-Care Diagnostics

Background:

Personalized medicine requires advanced biomarker and proteomic assays for point-of-care (POC) settings.
Current assays face challenges in cost, speed, sensitivity, selectivity, and reproducibility for POC applications.
Translating benchtop assays to clinical settings is hindered by technical difficulties.

Purpose of the Study:

To develop an efficient, robust, and inexpensive immunoassay method for high-throughput protein measurements.
To adapt existing immunoblot techniques for rapid, low-cost, and reliable biomarker detection at the POC.
To leverage microfluidics for streamlined and improved immunoassay performance.

Main Methods:

Developed a novel immunoassay using a vortex fluidic device (VFD) for assay development.
Sample is dotted onto an immunoblot membrane and developed within the VFD reactor.
All assay steps (blocking, binding, washing) utilize the VFD's thin-film microfluidics.

Main Results:

Achieved assay times under 5 minutes, demonstrating significant efficiency.
Reported robust performance with comparatively lower coefficients of variation (CVs).
Reduced reagent use and cost by over 70%, highlighting economic feasibility.

Conclusions:

The VFD-based immunoblot method accelerates direct, indirect, and sandwich immunoassays.
This approach offers a viable solution for cost-effective, high-performance protein quantification at the POC.
Demonstrated applications relevant to both laboratory research and clinical diagnostics.