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Functionalizable Antifouling Coatings as Tunable Platforms for the Stress-Driven Manipulation of Living Cell Machinery

I. Víšová, B. Smolková, M. Uzhytchak, M. Vrabcová, DE. Chafai, M. Houska, M. Pastucha, P. Skládal, Z. Farka, A. Dejneka, H. Vaisocherová-Lísalová

. 2020 ; 10 (8) : . [pub] 20200805

Language English Country Switzerland

Document type Journal Article, Research Support, Non-U.S. Gov't

Grant support
LQ100101902 Akademie Věd České Republiky - International
CZ.02.1.01/0.0/0.0/16_019/0000760 Ministerstvo Školství, Mládeže a Tělovýchovy - International

Cells are continuously sensing their microenvironment and subsequently respond to different physicochemical cues by the activation or inhibition of different signaling pathways. To study a very complex cellular response, it is necessary to diminish background environmental influences and highlight the particular event. However, surface-driven nonspecific interactions of the abundant biomolecules from the environment influence the targeted cell response significantly. Yes-associated protein (YAP) translocation may serve as a marker of human hepatocellular carcinoma (Huh7) cell responses to the extracellular matrix and surface-mediated stresses. Here, we propose a platform of tunable functionable antifouling poly(carboxybetain) (pCB)-based brushes to achieve a molecularly clean background for studying arginine, glycine, and aspartic acid (RGD)-induced YAP-connected mechanotransduction. Using two different sets of RGD-functionalized zwitterionic antifouling coatings with varying compositions of the antifouling layer, a clear correlation of YAP distribution with RGD functionalization concentrations was observed. On the other hand, commonly used surface passivation by the oligo(ethylene glycol)-based self-assembled monolayer (SAM) shows no potential to induce dependency of the YAP distribution on RGD concentrations. The results indicate that the antifouling background is a crucial component of surface-based cellular response studies, and pCB-based zwitterionic antifouling brush architectures may serve as a potential next-generation easily functionable surface platform for the monitoring and quantification of cellular processes.

References provided by Crossref.org

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