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Extracellular matrix affects different aspects of cell behaviour potentially involved in response to aminolevulinic acid-based photoinactivation.

Extracellular matrix affects different aspects of cell behaviour potentially involved in response to aminolevulinic acid-based photoinactivation.

Extracellular matrix affects different aspects of cell behaviour potentially involved in response to aminolevulinic acid-based photoinactivation.

J Photochem Photobiol B. 2018 Aug 17;189:283-291

Authors: Čunderlíková B, Filová B, Kajo K, Vallová M, Balázsiová Z, Trnka M, Mateašík A

Abstract
Two-dimensional cell cultures do not seem to be reliable models for anticancer drug discovery and validation. Numerous in vitro tumour models of different complexity have been evaluated with the aim to enhance anticancer drug development, but whether all these models could be considered as physiologically relevant is a question. Even type of the extracellular matrix may markedly influence experimental results and supposedly also clinical treatment outcome. By using three human oesophageal cell lines and three-dimensional cultures based on collagen type I, abundant component of stromal tissue, and Matrigel, a surrogate of basement membrane, we tested the impact of extracellular matrix on different aspects of cell behaviour. We applied live cell fluorescence confocal microscopy in combination with image analysis and supplemented it with immunohistochemical analysis of differentiation markers in fixed samples. We found that cell morphogenesis, differentiation, extracellular vesicle formation, protoporphyrin IX production from aminolevulinic acid and response to subsequent photodynamic intervention induced by red light may be affected by the type of extracellular matrix and these modifications occur in a cell-type dependent manner. Our results demonstrate that the choice of the correct extracellular matrix for in vitro tumour models is crucial for gathering clinically relevant information from in vitro experimental studies.

PMID: 30439643 [PubMed - as supplied by publisher]

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