Journal
JOURNAL OF DENTAL RESEARCH
Volume 81, Issue 12, Pages 826-830Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/154405910208101206
Keywords
palate; MMP-2; MMP-3
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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 muM 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.
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