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MMP-14 Triggered Fluorescence Contrast Agent.

Mai-Dung Nguyen1, Kyung A Kang2

  • 1Department of Chemical Engineering, University of Louisville, Louisville, KY, 40292, USA.

Advances in Experimental Medicine and Biology
|August 16, 2016
PubMed
Summary

Researchers developed a gold nanoparticle (GNP)-based agent for highly specific detection of matrix metalloproteinase-14 (MMP-14). This agent restores fluorescence upon encountering MMP-14, aiding aggressive cancer diagnosis.

Keywords:
Breast cancer detectionCypateGold nanoparticleMDA-MB 231MMP-14

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Area of Science:

  • Biomedical Engineering
  • Molecular Imaging
  • Cancer Biomarkers

Background:

  • Matrix metalloproteinase-14 (MMP-14) is crucial in cancer progression, invasion, metastasis, and angiogenesis.
  • MMP-14 is a biomarker for aggressive cancers, including triple-negative breast cancer.
  • Accurate detection of MMP-14 is vital for early diagnosis and prognosis of aggressive cancers like MDA-MB 231 breast cancer.

Purpose of the Study:

  • To develop a highly specific and sensitive contrast agent for detecting MMP-14.
  • To utilize gold nanoparticle (GNP)-fluorophore interactions for targeted molecular sensing.

Main Methods:

  • Designed a GNP-based near-infrared fluorescent contrast agent.
  • Exploited fluorescence quenching of a fluorophore near a GNP.
  • Demonstrated fluorescence restoration upon MMP-14 binding.

Main Results:

  • The developed agent exhibits high specificity for MMP-14.
  • The agent's fluorescence is quenched (14-17% of free fluorophore) until MMP-14 is encountered.
  • MMP-14 presence leads to full fluorescence restoration, enabling signal emission.

Conclusions:

  • A novel GNP-based fluorescent agent enables specific optical detection of MMP-14.
  • This technology holds potential for improved diagnostics and prognostics in aggressive cancers.
  • The MMP-14 specific agent offers a new tool for molecular imaging in oncology.