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A direct technique for preparation of magnetically functionalised living yeast cells

Fakhrullin, Rawil F.; García-Alonso, Javier; Paunov, Vesselin N.


Rawil F. Fakhrullin

Javier García-Alonso

Vesselin N. Paunov


A direct technique for preparation of magnetically functionalised yeast cells by using polyelectrolyte mediated deposition of magnetite nanoparticles is reported. We demonstrate that the cells preserve their viability after the magnetite deposition and show that the magnetic nanoparticles form a multilayered coating on the outer side of the yeast cell's wall. We applied our technique to produce magnetically functionalised yeast cells expressing green fluorescent protein (GFP) under the control of RAD54-GFP reporter and demonstrated that their fluorescence emission is not influenced by the presence of magnetite-polyelectrolyte composite coating. We show that the individual cells can be successfully manipulated by an external magnetic field which can be used for their deposition, holding and subsequent removal from microfluidic devices for genotoxicity and cytotoxicity biosensor applications. Our technique for direct magnetization of cells can find many other biotech applications including biosensors, bioreactors and bioseparation. © 2011 The Royal Society of Chemistry.


Fakhrullin, R. F., García-Alonso, J., & Paunov, V. N. (2010). A direct technique for preparation of magnetically functionalised living yeast cells. Soft matter, 6(2), 391-397.

Journal Article Type Article
Acceptance Date Oct 7, 2009
Online Publication Date Nov 6, 2009
Publication Date 2010
Print ISSN 1744-683X
Electronic ISSN 1744-6848
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 6
Issue 2
Pages 391-397
Keywords Magnetic yeast; Magnetic functionalization; Magnetite nanoparticles; Polyelectrolites
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