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Issue 2, 2014
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Fabrication of viable cyborg cells with cyclodextrin functionality

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Abstract

We describe two alternative methods for surface functionalisation of Saccharomyces cerevisiae cells with cyclodextrin molecules without affecting the cell viability. The first strategy involved using epichlorohydrin as a cross-linking agent which binds covalently the cyclodextrin to the glycoproteins on the cell wall. The second strategy of interfacing of the cells with CD involved polyelectrolyte mediated deposition of cyclodextrin sulphate on the cell surface. We used the formation of host–guest inclusion complexes of a dye with the grafted cyclodextrins to estimate the average number of CD molecules grafted per cell which can reach up to hundreds of millions of CD molecules. This indicates more than one monolayer of CDs on the cell surface within the surface layer surrounding the yeast cell membrane. Fluorescein diacetate was used to check the viability of the cells after functionalisation. Living cells functionalised with CDs may find many potential applications as they can be loaded with drugs, immunosuppressants and other molecules forming inclusion complexes with their cyclodextrin interface. Therefore, we foresee such cells being used as novel selective biosorbents in polluted waters, whole cell biosensors, drug delivery, cell therapy and cell implant applications.

Graphical abstract: Fabrication of viable cyborg cells with cyclodextrin functionality

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Publication details

The article was received on 28 Jun 2013, accepted on 27 Aug 2013 and first published on 04 Oct 2013


Article type: Paper
DOI: 10.1039/C3BM60162E
Citation: Biomater. Sci., 2014,2, 212-219
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    Fabrication of viable cyborg cells with cyclodextrin functionality

    B. G. Mathapa and V. N. Paunov, Biomater. Sci., 2014, 2, 212
    DOI: 10.1039/C3BM60162E

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