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Functional, UV-curable coating for the capture of circulating tumor cells

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Abstract

The capture of circulating tumor cells (CTCs) plays a crucial role in the early diagnosis, personalized treatment and postoperative evaluation of malignant tumors. In this study, UV-curable coating technology was combined with antibody immobilization to enable CTC captures on poly(methyl methacrylate) (PMMA) substrates. Controlled amounts of carboxyl groups and polyethylene glycol (PEG) segments were introduced into the coating formulation to facilitate immobilization of antibodies and block non-specific protein adsorption, respectively. Then, anti-EpCAM antibodies were immobilized on functionalized, coated PMMA substrates by EDC/NHS chemistry. Multiple physical, chemical and biological properties were investigated, including hydrophilicity, protein adsorption, platelet adhesion and anticoagulant properties. Thereafter, optimized coatings were applied on the inner wall of PMMA tubes, followed by immobilization of anti-EpCAM antibodies. After perfusion of the tubes with whole blood, enriched with SGC7901 gastric cancer cells that overexpress EpCAM antigens, rapid and efficient capture of the tumor cells was observed. These results provide a basis for further development of devices for the selective capture and enrichment of CTCs, using small blood volumes.

Graphical abstract: Functional, UV-curable coating for the capture of circulating tumor cells

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Publication details

The article was received on 18 Feb 2019, accepted on 20 Mar 2019 and first published on 26 Mar 2019


Article type: Paper
DOI: 10.1039/C9BM00264B
Citation: Biomater. Sci., 2019, Advance Article

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    Functional, UV-curable coating for the capture of circulating tumor cells

    W. Song, X. Li, Y. Zhao, C. Liu, J. Xu, H. Wang and T. Zhang, Biomater. Sci., 2019, Advance Article , DOI: 10.1039/C9BM00264B

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