Partial reversion of the phenotype of a poorly differentiated hepatocellular carcinoma in a three-dimensional culture |
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Authors: | T D Rudinskaya N I Kuprina N L Lazarevich N I Polyanskaya V S Poltoranina D A Shavochkina N V Engelhardt |
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Institution: | (1) Molecular and Cell Biology Laboratory, Salk Institute, 10010 N. Torrey Pines Road, La Jolla, CA 92037, USA |
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Abstract: | In vivo, normal tissues and organs have a three-dimensional structure and function in a three-dimensional environment. The
standard two-dimensional cell culture conditions drastically differ from those in vivo. For this reason, three-dimensional
cultures based on different variants of the extracellular matrix are more adequate for analyzing normal and tumor cell growth.
Culturing a poorly differentiated hepatocellular carcinoma in a collagen gel yielded spheroids whose growth pattern shifted
towards the epithelial phenotype. The shift was expressed in changes in the cytoskeleton, enhanced formation of extracellular
matrix fibrils between cells, and formation of fibronectin fibrils on the outer surface of spheroids. Analysis of 25 genes
reflecting the level of morphological and functional hepatocyte differentiation showed that the expression of the gene encoding
the transforming growth factor TGFβ2 was suppressed the most significantly. |
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