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Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
Published on: June 7, 2019
[Involvement of matrix metalloproteinases (MMPs) in cutaneous melanoma progression]
C Ntayi1, W Hornebeck, P Bernard
1Laboratoire de recherche en dermatologie, Faculté de médecine, Université de Reims-Champagne-Ardenne, 51, rue Cognacq-Jay, 51095 Reims, France. carole.ntayi@caramail.com
Abstract:
Among skin cancers, melanoma is probably the most highly invasive and metastasizing, with a poor outcome. During melanoma progression, tumor cells must across the dermal-epidermal junction, and invade the dermis, its principal site of propagation. Therefore, degradation of matrix proteins constituting dermal-epidermal junction and dermis by proteolytic enzymes is an essential step of melanoma invasion. Serines proteinases and Matrix Metalloproteinases (MMPs) families are the main degrading substances involved in this process. Among MMPs, the expression of MMP-1, -2, -3, -9, -14, 15, -16 by melanoma cells was shown in vitro and in vivo, and correlated with the invasive phenotype. In addition to disrupt matrix proteins, MMPs can also cleave non matrix components such as cytokines, and growth factors. The modifications generated by the remodeling of matrix and non-matrix components can influence melanoma cells proliferation, adhesion, vascularization, survival, proteases expression, and migration. Thus, using inhibitors in order to control expression, activation and activity of MMPs could regulate cellular process which led to melanoma progression.
Insights
Melanoma invasion relies on matrix-degrading enzymes called Matrix Metalloproteinases (MMPs). Inhibiting MMPs may control melanoma cell progression and improve outcomes.
Area of Science:
- Oncology
- Biochemistry
- Cell Biology
Context:
- Melanoma is an aggressive skin cancer characterized by high invasiveness and metastasis.
- Tumor cell invasion through the dermal-epidermal junction and into the dermis is critical for melanoma spread.
- Degradation of extracellular matrix proteins by proteolytic enzymes facilitates melanoma cell invasion.
Purpose:
- To investigate the role of proteolytic enzymes, particularly Matrix Metalloproteinases (MMPs), in melanoma invasion.
- To explore the correlation between MMP expression and the invasive phenotype of melanoma cells.
- To assess the potential of MMP inhibitors in regulating melanoma progression.
Summary:
- Melanoma cells invade by degrading the dermal-epidermal junction and dermis, a process mediated by proteolytic enzymes like Serine proteinases and MMPs.
- Specific MMPs (MMP-1, -2, -3, -9, -14, -15, -16) are expressed by melanoma cells and linked to their invasive capabilities.
- MMPs remodel both matrix and non-matrix components, influencing melanoma cell proliferation, adhesion, vascularization, survival, and migration.
Impact:
- Understanding MMP involvement in melanoma invasion provides targets for therapeutic intervention.
- Inhibiting MMPs could offer a strategy to control melanoma cell progression, migration, and metastasis.
- Targeting MMPs may modulate key cellular processes essential for melanoma growth and spread.
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