Related Experiment Video
Updated: Jun 8, 2026
06:46
Non-invasive In Vivo Fluorescence Optical Imaging of Inflammatory MMP Activity Using an Activatable Fluorescent Imaging Agent
Published on: May 8, 2017
Optimization of matrix metalloproteinase fluorogenic probes for osteoarthritis imaging
Ju Hee Ryu1, Aeju Lee, Jin Hee Na
1Biomedical Research Center, Korea Institute of Science and Technology, Seongbuk-gu, Seoul, South Korea.
Amino Acids
|October 19, 2010
Summary
Researchers optimized a fluorogenic probe for detecting matrix metalloproteinase-13 (MMP-13) in osteoarthritis (OA). This improved probe allows for clear in vivo visualization of MMP-13 activity in OA cartilage, aiding diagnosis and treatment evaluation.
Area of Science:
- Biochemistry
- Molecular Biology
- Medical Imaging
Background:
- Matrix metalloproteinase-13 (MMP-13) is a key enzyme in osteoarthritis (OA) cartilage degradation.
- Existing in vivo detection methods for MMP-13 activity lack sensitivity and selectivity.
- Previous work showed potential for a fluorogenic probe in detecting MMP-13.
Purpose of the Study:
- To optimize a fluorogenic probe for sensitive and selective in vivo detection of MMP-13 activity in OA.
- To evaluate the probe's performance in OA-induced rat models.
Main Methods:
- Optimization of three candidate MMP-13 fluorogenic probes.
- In vitro assessment of probe signal amplification and selectivity against MMP-2 and MMP-9.
- In vivo application of the optimized probe in OA-induced rat models for cartilage imaging.
Main Results:
- Three probes showed fluorescence intensity proportional to MMP-13 concentration.
- Probe 2 demonstrated high signal amplification and selective MMP-13 recognition in vitro.
- Clear visualization of MMP-13 activity in OA-induced cartilage was achieved in vivo using Probe 2.
Conclusions:
- The optimized MMP-13 fluorogenic probe enables effective in vivo detection and imaging of OA.
- This probe has potential for evaluating the efficacy of MMP-13 inhibitors in OA therapeutic strategies.
