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Updated: Feb 1, 2026
Bacterial Expression and Purification of Human Matrix Metalloproteinase-3 using Affinity Chromatography
Published on: March 30, 2022
Regulation of matrix metalloproteinase-3 gene expression in inflammation: A molecular study
Kavalipurapu Venkata Teja1, Sindhu Ramesh1, Vishnu Priya2
1Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India.
Introduction:
Matrix metalloproteinases (MMPs) play a significant role in the efficient tissue turnover and remodeling. This study focuses on the regulation of the MMPs by the protein kinases at the level of gene expression and their signaling pathways.
Materials And Methods:
Lipopolysaccharide-induced murine macrophage-like RAW 264.7 cell lines were obtained and maintained in Dulbecco's modified Eagle's medium plus 10% fetal bovine serum under optimal temperatures. Primers used were MMP-3 forward primer, MMP-3 reverse primer, and glyceraldehyde-3-phosphate dehydrogenase forward primer and glyceraldehyde-3-phosphate reverse primer. Total RNA was isolated, the sample was prepared, and electrophoresis was performed. The first strand of cDNA was synthesized and amplification of specific isolated gene using polymerase chain reactor (PCR). The amplified products were then separated on a 1.0% agarose gel in 1XTBE at 75 V for 3 h. The gel was stained with ethidium bromide, and the amplified product was visualized and photographed on Gel Doc system.
Results:
Real-time PCR showed only bands at expected size of 595 bp for internal control amplification of glyceraldehyde-3-dehydrogenase gene. Analysis was done with densitometry, and these values are compared with the negative control. Results showed a statistically significant rise in the relative levels of MMP-3-mRNA when compared with negative control at 1, 2, and 3 h.
Conclusion:
This study proved the significantly increased levels of MMP gene at different period, thereby it can be concluded that MMP-3 levels are higher in inflammatory conditions.
Insights
This study demonstrates that matrix metalloproteinase-3 (MMP-3) mRNA levels significantly increase in inflammatory conditions. These findings highlight the role of MMP-3 in cellular responses during inflammation.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Matrix metalloproteinases (MMPs) are crucial for tissue turnover and remodeling.
- Protein kinases regulate MMPs at the gene expression and signaling pathway levels.
Purpose of the Study:
- To investigate the regulation of MMPs by protein kinases.
- To analyze MMP gene expression and signaling pathways in response to inflammatory stimuli.
Main Methods:
- Utilized lipopolysaccharide-induced murine macrophage-like RAW 264.7 cell lines.
- Employed quantitative real-time PCR (qRT-PCR) to measure MMP-3 mRNA levels.
- Analyzed gene expression changes using densitometry and compared to controls.
Main Results:
- Observed a statistically significant increase in MMP-3 mRNA levels at 1, 2, and 3 hours post-stimulation.
- Confirmed amplification of the glyceraldehyde-3-phosphate dehydrogenase (internal control) gene at the expected size.
- Demonstrated a clear correlation between inflammatory conditions and elevated MMP-3 expression.
Conclusions:
- MMP-3 gene expression is significantly upregulated during inflammatory conditions.
- The study provides evidence for elevated MMP-3 levels in inflammatory states.
- This research contributes to understanding MMP-mediated processes in inflammation.
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