Summary
Published in BMC Cancer (2019), this peer-reviewed study used 3D Petri Dish® micro-molds to form scaffold-free 3D microtissues. Full citation: Klicks, Julia, et al. A novel spheroid-based co-culture model mimics loss of keratinocyte differentiation, melanoma cell invasion, and drug-induced selection of ABCB5-expressing cells
A novel spheroid-based co-culture model mimics loss of keratinocyte differentiation, melanoma cell invasion, and drug-induced selection of ABCB5-expressing cells
Research Overview
Existing 3D melanoma models tend to be either single-cell-type spheroids that miss the tumor microenvironment or full-complexity systems that are expensive and hard to interpret. This study generated spheroids of up to three cell types using low-attachment culture, characterized by cryosectioning, immunofluorescence, and flow cytometry.
The tri-culture spheroids self-organized into a distinct architecture — a collagen-IV-rich fibroblast core with melanoma cells arranged around it — recapitulating characteristics of early melanoma stages while keeping each cell type trackable. The model balances physiological relevance with interpretability and cost, making it practical for drug testing and mechanistic studies.
Key Discoveries
- Tri-culture spheroids (up to three cell types) modeled early melanoma stages with cell-type-specific tracking
- Spheroids self-organized into a collagen-IV-rich fibroblast core ringed by melanoma cells
- Provides a middle path between oversimplified single-type spheroids and costly full-complexity models
