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Updated: Sep 28, 2026
Isolation and Time-Lapse Imaging of Primary Mouse Embryonic Palatal Mesenchyme Cells to Analyze Collective Movement Attributes
Published on: February 13, 2021
Matrix metalloproteinases have a role in palatogenesis
N L Brown1, S J Yarram, J P Mansell
1Division of Child Dental Health, University of Bristol Dental School, Lower Maudlin Street, Bristol, BS1 2LY, UK.
Abstract:
Mammalian palatogenesis depends on palatal shelf elevation, medial edge epithelium (MEE) breakdown, and mesenchyme flow. These all require matrix remodeling, which is controlled in part by the family of matrix metalloproteinases (MMPs). We used an organ culture system to examine the effect of a general MMP inhibitor (BB3103) on mouse palatogenesis. Palates cultured in 20 micro M BB3103 contained no active MMP-2, and only one palate fused from a sample size of 15. In this single palate, MMP-3 was present at higher levels than in palates that failed to fuse. MMP-3 is known to be involved in epithelial mesenchymal transformation (EMT), and its persistence may explain why this palate fused. This implies a role for MMPs in normal palatogenesis, and disruption of their activity may result in cleft palate.
Insights
Matrix metalloproteinases (MMPs) are crucial for mammalian palatogenesis. Inhibiting MMPs disrupts palate fusion, suggesting their vital role in preventing cleft palate development.
Area of Science:
- Developmental Biology
- Molecular Biology
- Biochemistry
Background:
- Palatogenesis, the process of palate formation, involves complex cellular events including epithelial remodeling and mesenchymal cell migration.
- Matrix metalloproteinases (MMPs) are enzymes essential for extracellular matrix remodeling, playing a critical role in various developmental processes.
Purpose of the Study:
- To investigate the role of matrix metalloproteinases (MMPs) in mammalian palatogenesis using an organ culture model.
- To determine the effect of a general MMP inhibitor on the fusion of palatal shelves.
Main Methods:
- Utilized a mouse organ culture system to study palatogenesis.
- Administered a general MMP inhibitor (BB3103) at a concentration of 20 micro M to cultured palates.
- Assessed MMP activity (MMP-2, MMP-3) and palate fusion success.
Main Results:
- Palates cultured with 20 micro M BB3103 showed no active MMP-2.
- Only one out of 15 cultured palates successfully fused when treated with the MMP inhibitor.
- The single fused palate exhibited higher levels of MMP-3 compared to non-fused palates.
Conclusions:
- Matrix metalloproteinases (MMPs) are essential for successful mammalian palatogenesis.
- Disruption of MMP activity, as demonstrated by BB3103 treatment, significantly impairs palate fusion, potentially leading to cleft palate.
- MMP-3 may play a specific role in facilitating palate fusion, possibly through epithelial mesenchymal transformation (EMT).
