Abstract
This study focuses on the interactions of human adipose tissue-derived stem cells (ADSCs) and malignant melanoma cells (MMCs) with regard to future cell-based skin therapies. The aim was to identify potential oncological risks as ADSCs could unintentionally be sited within the proximity of the tumor microenvironment of MMCs. An indirect co-culture model was used to analyze interactions between ADSCs and four different established melanoma cell lines (G-361, SK-Mel-5, MeWo and A2058) as well as two low-passage primary melanoma cell cultures (M1 and M2). Doubling time, migration and invasion, angiogenesis, quantitative real-time PCR of 229 tumor-associated genes and multiplex protein assays of 20 chemokines and growth factors and eight matrix metalloproteinases (MMPs) were evaluated. Co-culture with ADSCs significantly increased migration capacity of G-361, SK-Mel-5, A2058, MeWo and M1 and invasion capacity of G-361, SK-Mel-5 and A2058 melanoma cells. Furthermore, conditioned media from all ADSC-MMC-co-cultures induced tube formation in an angiogenesis assay in vitro. Gene expression analysis of ADSCs and MMCs, especially of low-passage melanoma cell cultures, revealed an increased expression of various genes with tumor-promoting activities, such as CXCL12, PTGS2, IL-6, and HGF upon ADSC-MMC-co-culture. In this context, a significant increase (up to 5,145-fold) in the expression of numerous tumor-associated proteins could be observed, e.g. several pro-angiogenic factors, such as VEGF, IL-8, and CCL2, as well as different matrix metalloproteinases, especially MMP-2. In conclusion, the current report clearly demonstrates that a bi-directional crosstalk between ADSCs and melanoma cells can enhance different malignant properties of melanoma cells in vitro.
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Abbreviations
- ADSCs:
-
Adipose tissue-derived stem cells
- bFGF:
-
Basic fibroblast growth factor
- CCL:
-
C-C motif-ligand
- CD:
-
Cluster of differentiation
- COX-2:
-
Cyclooxygenase-2
- CXCL:
-
C-X-C motif ligand
- ECM:
-
Extracellular matrix
- EMT:
-
Epithelial-mesenchymal-transition
- EMMPRIN:
-
Extracellular matrix metalloproteinase inducer
- FCS:
-
Fetal calf serum
- FN:
-
Fibronectin
- HGF:
-
Hepatocyte growth factor
- hMSCs:
-
Human mesenchymal stem/stroma cells
- HUVEC:
-
Human umbilical vein endothelial cells
- IL:
-
Interleukin
- MCAM:
-
Melanoma cell adhesion molecule
- MMCs:
-
Malignant melanoma cells
- MMP:
-
Matrix metalloproteinase
- PMA:
-
Phorbol 12-myristate 13-acetate
- SD:
-
Standard deviation
- PTGS2:
-
Prostaglandin-endoperoxide synthase 2
- TW:
-
Transwell
- VEGF:
-
Vascular endothelial growth factor.
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Acknowledgements
We would like to thank Claudia Ziegelmeier and Iris Kaiser for technical support with the multiplex analysis and Prof. Dr. Holger Sültmann (Division of Cancer Genome Research, NCT and German Cancer Research Center, Heidelberg, Germany) for providing access to the Bio-Plex 200 System.
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Preisner, F., Leimer, U., Sandmann, S. et al. Impact of Human Adipose Tissue-Derived Stem Cells on Malignant Melanoma Cells in An In Vitro Co-culture Model. Stem Cell Rev and Rep 14, 125–140 (2018). https://doi.org/10.1007/s12015-017-9772-y
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DOI: https://doi.org/10.1007/s12015-017-9772-y