3D Coculture Models Underline Metastatic Melanoma Cell Sensitivity to Vemurafenib

Area of Science:

• Oncology
• Biomedical Engineering
• Cell Biology

Background:

• Three dimensional (3D) in vitro cell culture systems offer a more accurate representation of native tissue architecture compared to traditional two dimensional (2D) cultures.
• Investigating cancer cell sensitivity to drugs requires models that closely mimic the in vivo microenvironment.
• Metastatic melanoma (MM) presents a significant challenge, necessitating improved drug sensitivity testing models.

Purpose of the Study:

• To develop and compare 2D and 3D co-culture models of metastatic melanoma (MM).
• To investigate factors modulating MM cell sensitivity to vemurafenib, a BRAF inhibitor.
• To establish a heterotypic 3D melanoma model that recapitulates the natural microenvironment.

Main Methods:

• Development of 2D monolayer and 3D co-culture models using MM cells and fibroblasts on dermal equivalents.
• Comparison of drug sensitivity in 2D versus 3D models.
• Characterization of the 3D model for paracrine signaling and type I collagen matrix presence.

Main Results:

• The established 3D melanoma model incorporates paracrine signaling from stromal cells and a type I collagen matrix.
• This 3D model mimics the natural microenvironment of cutaneous MM.
• The 3D model identified potent sensitive melanoma cells to vemurafenib.

Conclusions:

• The heterotypic 3D melanoma model effectively mimics the tumor microenvironment.
• This advanced model allows for the identification of melanoma cells sensitive to vemurafenib.
• The developed 3D model shows potential as a tool for predicting drug efficacy in metastatic melanoma.