Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Miniaturized immunoassay microfluidic system with electrokinetic control.

Qing Xiang1, Guoqing Hu, Yali Gao

  • 1Microfluidics and Lab-on-a-Chip Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ont., Canada M5S 3G8.

Biosensors & Bioelectronics
|November 18, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Protective Effects of Dexmedetomidine Against Ischemic Heart Disease and Diabetic Cardiomyopathy by Targeting Ferroptosis.

Reviews in cardiovascular medicine·2026
Same author

The application of continuous enteral nutrition during sequential chemoradiotherapy and immunotherapy in patients with esophageal cancer: a retrospective study.

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer·2026
Same author

Lactate-driven H3K18 lactylation promotes cisplatin resistance in bladder cancer via HNRNPF-Parkin mediated mitophagy.

Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy·2026
Same author

MFGE8-primed fibroblasts reprogram the immunosuppressed microenvironment to promote diabetic wound healing.

Frontiers in cell and developmental biology·2026
Same author

Ana1/CEP295 regulates centriolar doublet-to-triplet conversion during spermatogenesis.

The Journal of cell biology·2026
Same author

Expected level of target cues determines prospective memory strategic processing: The effect of task switching.

iScience·2026

This study introduces a portable immunoassay system for rapid bacterial antigen detection. The automated system uses microfluidics and fluorescence detection, achieving a low detection limit for Escherichia coli O157:H7.

Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Microfluidics

Background:

  • Miniaturized diagnostic systems are crucial for point-of-care applications.
  • Traditional immunoassay methods can be time-consuming and require large reagent volumes.
  • Developing portable and automated immunoassay platforms is essential for rapid pathogen detection.

Purpose of the Study:

  • To develop and evaluate a portable heterogeneous immunoassay system.
  • To automate reagent dispensing and washing processes for improved efficiency.
  • To assess the system's performance in detecting bacterial antigens, specifically Escherichia coli O157:H7.

Main Methods:

  • A microfluidic chip made of poly(dimethylsiloxane) (PDMS) served as the immunoreactor.
  • A miniaturized programmable high voltage sequencer controlled fluid flow and reagent dispensing.

Related Experiment Videos

  • A laser-optical fiber fluorescence detection module was used for signal readout.

    • Main Results:

    • The automated immunoassay system demonstrated efficient operation with sequential reagent dispensing and washing.
    • Minimal reagent consumption (12 microL) and a short assay time (26 min) were achieved.
    • A low detection limit of 0.3 ng/muL for Escherichia coli O157:H7 bacterial antigen was obtained, surpassing previous methods.

    Conclusions:

    • The portable heterogeneous immunoassay system offers a rapid, automated, and sensitive platform for bacterial antigen detection.
    • The system's miniaturization and low reagent consumption make it suitable for field applications.
    • This technology has the potential to significantly improve pathogen surveillance and diagnostics.