Related Experiment Video
Updated: Jun 16, 2026
Bacterial Expression and Purification of Human Matrix Metalloproteinase-3 using Affinity Chromatography
Published on: March 30, 2022
Production of active MMP7 in E. coli and its application for metalloproteinase inhibitors screening
H Katsuno1, R Shirakawa, K Miyazaki
1Expert Laboratory for Life Environments (ELLE), Department of Environmental Biosciences, International Graduate School of Arts and Sciences, Yokohama City University, 22-2, Seto, Kanazawa-ku, Yokohama 236-0027, Japan.
Abstract:
MMP-7 is the smallest metalloproteinase. Its unregulated activities and existence in serum are recently known to be tightly related with life-threatening disease such as cardiac disease and several cancers. The protein production is thought to be useful for its characterization and antibody generation. Although many attempts at bacterial expressions have been conducted, they were recovered as insoluble and inactive protein. In this study, after soluble expression, single-step purification and conversion to active protease, it was applied for the screening secretory metalloproteinase inhibitors in conditioned media of human cancer cells.
Insights
Matrix metalloproteinase-7 (MMP-7) was successfully expressed and purified in a soluble, active form. This breakthrough enables screening for inhibitors of MMP-7, crucial for understanding its role in cancer and heart disease.
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Matrix metalloproteinase-7 (MMP-7) is the smallest metalloproteinase.
- Unregulated MMP-7 activity and serum presence correlate with severe diseases like cancer and cardiac conditions.
- Characterization and antibody generation for MMP-7 are vital for research.
Purpose of the Study:
- To achieve soluble and active expression of MMP-7.
- To develop a method for MMP-7 purification and activation.
- To utilize active MMP-7 for screening secretory metalloproteinase inhibitors from human cancer cell media.
Main Methods:
- Engineered soluble expression of MMP-7.
- Performed single-step purification of the expressed protein.
- Activated the purified metalloproteinase.
- Applied active MMP-7 to screen for inhibitors in cancer cell conditioned media.
Main Results:
- Successfully obtained soluble and active MMP-7.
- Established an efficient purification and activation protocol.
- Demonstrated the utility of active MMP-7 in inhibitor screening.
Conclusions:
- Soluble and active MMP-7 expression and purification are achievable.
- This methodology facilitates the discovery of novel metalloproteinase inhibitors.
- The findings support further investigation into MMP-7's role in disease pathogenesis and therapeutic development.
