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Published on: July 25, 2020
Molecular alterations in odontogenic keratocysts as potential therapeutic targets
Carolina Cavalieri Gomes1, Letícia Martins Guimarães2, Marina Gonçalves Diniz2
1Department of Pathology, Basic Sciences Institute, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil.
Abstract:
The odontogenic keratocyst (OKC) is a cystic lesion, lined by uniformly thickened parakeratinized epithelium. Some lesions are large and tend to recur after surgical treatment. The neoplastic nature of OKCs remains a matter of dispute. It is known that some sporadic OKCs harbor PTCH1 mutations, and via the dissection of cyst epithelium, these mutations were demonstrated to occur much more frequently than previously thought. In addition to the classical PTCH1 mutations, Hedgehog pathway disturbance and Bcl-2 protein overexpression, as detected via genome-wide expression analysis of OKCs, have been published. Changes in DNA methylation patterns and alterations in microRNA expression levels have recently been reported in these lesions. We reviewed the molecular mechanisms that underlie the pathogenesis of OKCs as described over the past few years and explored the molecular alterations that can be therapeutically targeted.
Insights
Odontogenic keratocysts (OKCs) are cystic lesions with a tendency to recur. Research reveals molecular alterations in OKC pathogenesis, including PTCH1 mutations and Hedgehog pathway disturbances, offering potential therapeutic targets.
Area of Science:
- Oral pathology
- Molecular oncology
- Developmental biology
Background:
- Odontogenic keratocyst (OKC) is a common cystic lesion of the jaw.
- Characterized by thickened parakeratinized epithelium and a high recurrence rate post-surgery.
- The neoplastic potential of OKCs is debated, necessitating further investigation into their molecular underpinnings.
Purpose of the Study:
- To review and synthesize recent findings on the molecular mechanisms driving OKC pathogenesis.
- To identify molecular alterations that could serve as therapeutic targets for OKC treatment.
- To clarify the molecular basis of OKC development and behavior.
Main Methods:
- Review of recent scientific literature on OKC molecular pathogenesis.
- Analysis of studies investigating genetic mutations, gene expression, and epigenetic modifications in OKCs.
- Exploration of signaling pathways implicated in OKC development, such as the Hedgehog pathway.
Main Results:
- Sporadic OKCs frequently harbor PTCH1 mutations, occurring more often than previously recognized.
- Hedgehog pathway dysregulation and Bcl-2 protein overexpression are observed in OKCs.
- Recent studies highlight alterations in DNA methylation and microRNA expression in these lesions.
Conclusions:
- OKCs exhibit complex molecular alterations contributing to their pathogenesis and aggressive behavior.
- Understanding these molecular changes, including PTCH1 mutations and pathway disturbances, is crucial.
- Targeting these identified molecular pathways presents a promising avenue for future OKC therapies.
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