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Bacterial Expression and Purification of Human Matrix Metalloproteinase-3 using Affinity Chromatography
Published on: March 30, 2022
Dicarbonyl-mediated protein modifications affect matrix metalloproteinase (MMP) activity
B Bartling1, M Desole, R-E Silber
1Klinik für Herz- und Thoraxchirurgie, Universitätsklinikum der Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Str. 40, 06120, Halle/Saale, Germany. babett.bartling@medizin.uni-halle.de
Zeitschrift Fur Gerontologie Und Geriatrie
|October 19, 2007
Summary
Advanced glycation end products (AGEs) may explain why elderly patients develop less invasive lung tumors. Our study found AGEs reduce the activity of matrix metalloproteinase-2 (MMP-2), an enzyme linked to cancer spread.
Area of Science:
- Gerontology
- Oncology
- Biochemistry
Background:
- Advanced age correlates with increased epithelial tumor incidence, yet cancer progression slows in the very elderly.
- Matrix metalloproteinases (MMPs) are implicated in cancer invasion and metastasis.
- Advanced glycation end products (AGEs) accumulate with age and may influence age-related disease characteristics.
Purpose of the Study:
- To investigate the impact of AGEs on the activity of MMPs released by human lung fibroblasts (WI-38 cells).
- To explore a potential mechanism for reduced tumor invasiveness in advanced age.
Main Methods:
- Cultured human lung fibroblasts (WI-38 cells) and collected conditioned medium.
- Assessed MMP activity using collagen gel zymography.
- Treated fibroblast-conditioned medium with glyoxal, a precursor to AGEs, to observe effects on MMP-2 activity.
Main Results:
- MMP-2 was identified as the primary MMP in WI-38 fibroblast conditioned medium, with higher levels in senescent cells.
- Exposure to glyoxal resulted in a dose-dependent decrease in MMP-2 activity.
- This suggests AGEs may inhibit MMP activity.
Conclusions:
- Age-associated increases in AGEs could be a host factor contributing to reduced tumor invasiveness in very elderly patients.
- AGEs may suppress MMP activity, thereby limiting cancer cell invasion and metastasis.
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