Journal
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fbioe.2021.660502
Keywords
3D models; tissue-engineering; tumor stroma; compartmentalization; stiffness; collagen density; stromal cells; extracellular matrix
Funding
- United Kingdom's National Institute of Health Research (NIHR) UCLH/UCL Biomedical Research Centre - NIHR Invention for Innovation (i4i) program
- EPSRC
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The use of tissue-engineered 3D models of cancer has become more popular in cancer research. This review explores different 3D models, outlining their benefits, limitations, and methods for measuring cancer invasion and growth. Tumoroids were found to be comparable 3D cancer models with a high degree of biomimicry.
The use of tissue-engineered 3D models of cancer has grown in popularity with recent advances in the field of cancer research. 3D models are inherently more biomimetic compared to 2D cell monolayers cultured on tissue-culture plastic. Nevertheless 3D models still lack the cellular and matrix complexity of native tissues. This review explores different 3D models currently used, outlining their benefits and limitations. Specifically, this review focuses on stiffness and collagen density, compartmentalization, tumor-stroma cell population and extracellular matrix composition. Furthermore, this review explores the methods utilized in different models to directly measure cancer invasion and growth. Of the models evaluated, with PDX and in vivo as a relative gold standard, tumoroids were deemed as comparable 3D cancer models with a high degree of biomimicry, in terms of stiffness, collagen density and the ability to compartmentalize the tumor and stroma. Future 3D models for different cancer types are proposed in order to improve the biomimicry of cancer models used for studying disease progression.
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