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• W2953843493 abstract "Current materials used for in vitro 3D cell culture are often limited by their poor similarity to human tissue, batch-to-batch variability and complexity of composition and manufacture. Here, we present a blank slate culture environment based on a self-assembling peptide gel free from matrix motifs. The gel can be customised by incorporating matrix components selected to match the target tissue, with independent control of mechanical properties. Therefore the matrix components are restricted to those specifically added, or those synthesised by encapsulated cells. The flexible 3D culture platform provides full control over biochemical and physical properties, allowing the impact of biochemical composition and tissue mechanics to be separately evaluated in vitro. Here, we demonstrate that the peptide gels support the growth of a range of cells including human induced pluripotent stem cells and human cancer cell lines. Furthermore, we present proof-of-concept that the peptide gels can be used to build disease-relevant models. Controlling the peptide gelator concentration allows peptide gel stiffness to be matched to normal breast (<1 kPa) or breast tumour tissue (>1 kPa), with higher stiffness favouring the viability of breast cancer cells over normal breast cells. In parallel, the peptide gels may be modified with matrix components relevant to human breast, such as collagen I and hyaluronan. The choice and concentration of these additions affect the size, shape and organisation of breast epithelial cell structures formed in co-culture with fibroblasts. This system therefore provides a means of unravelling the individual influences of matrix, mechanical properties and cell-cell interactions in cancer and other diseases." @default.
• W2953843493 created "2019-07-12" @default.
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• W2953843493 date "2020-01-01" @default.
• W2953843493 modified "2023-10-15" @default.
• W2953843493 title "Peptide gels of fully-defined composition and mechanics for probing cell-cell and cell-matrix interactions in vitro" @default.
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• W2953843493 doi "https://doi.org/10.1016/j.matbio.2019.06.009" @default.
• W2953843493 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7610915" @default.
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• W2953843493 hasPublicationYear "2020" @default.
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