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Related Experiment Video

Updated: Jul 17, 2026

Synthesis, Characterization, and Application of Superparamagnetic Iron Oxide Nanoprobes for Extrapulmonary Tuberculosis Detection
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Published on: February 16, 2020

Surface plasmon resonance biochips for tuberculosis bacillus detection.

Jhen-Gang Huang1, Chi-Chan Hung, Hsin-Chih Lai

  • 1Inst. of Biomed. Eng., Nat. Taiwan Univ., Taipei, Taiwan.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 3, 2007
PubMed
Summary

This study introduces a novel protein chip diagnostic for tuberculosis, utilizing surface plasmon resonance (SPR) to detect TB antigens. The new method offers a faster and more specific alternative to traditional tuberculosis detection techniques.

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Area of Science:

  • Biomedical Engineering
  • Infectious Disease Diagnostics
  • Biosensing Technology

Background:

  • Tuberculosis (TB) remains a significant global health threat, necessitating improved diagnostic methods.
  • Current TB diagnostic techniques like acid-fast stain and bacterial culture suffer from low sensitivity, time consumption, and limited specificity.
  • There is a critical need for rapid, sensitive, and specific diagnostic tools for tuberculosis.

Purpose of the Study:

  • To develop and evaluate a novel diagnostic technique for tuberculosis detection.
  • To utilize protein chips and Surface Plasmon Resonance (SPR) phenomena for enhanced TB diagnosis.
  • To assess the performance of immobilized TB antigens (W38 and W06) in an SPR-based biosensor.

Main Methods:

  • Development of a protein chip-based biosensor incorporating immobilized TB antigens (W38 and W06).
  • Detection of TB-specific antibodies using Surface Plasmon Resonance (SPR) phenomena.
  • Analysis of resonance angle shifts in response to varying concentrations of TB antigen W38 and W06.
  • Optimization of immobilized TB antigen concentration and evaluation of antibody dilutions.

Main Results:

  • The SPR-based protein chip demonstrated a rightward shift in resonance angle with increasing antibody concentrations for both W38 and W06 antigens.
  • Optimal concentration for immobilized TB antigen W38 was determined to be 50 µg/ml, showing resonance angle shifts at 10X, 30X, 100X, and 300X antibody dilutions.
  • TB antigen W06 (50 µg/ml) also exhibited similar resonance angle shifts, indicating its utility in the diagnostic assay.
  • The observed shifts suggest the potential for sensitive detection of TB-specific antibodies.

Conclusions:

  • The proposed protein chip diagnostic technique based on SPR shows promise for rapid and specific detection of tuberculosis.
  • This novel approach offers a potential advancement over traditional TB diagnostic methods, addressing limitations in sensitivity and speed.
  • Further validation and clinical studies are warranted to establish the full potential of this SPR-based biosensor for tuberculosis diagnosis.