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Interactions of Potential Protein Cancer Biomarker Survivin with Plasmonic Nanoparticles and Its Dynamics in Cancer Cells Studied Using Fluorescence Molecular-Beacon Probes, Gated-RET and EQCN Methods

Published online by Cambridge University Press:  13 February 2015

Magdalena Stobiecka ,
Agata Chalupa  and
Beata Dworakowska
Magdalena Stobiecka*
Affiliation:
Department of Biophysics, Warsaw University of Life Sciences (SGGW), Warsaw 02776, Poland.
Agata Chalupa
Affiliation:
Institute of Nanoparticle Nanocarriers, Barczewo 11010, Poland.
Beata Dworakowska
Affiliation:
Department of Biophysics, Warsaw University of Life Sciences (SGGW), Warsaw 02776, Poland.
*
*Email: magdalena_stobiecka@sggw.pl
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Abstract

The protein survivin (Sur) has been considered as a potential cancer biomarker due to its involvement in disrupting normal cell cycle by stimulating proliferation and inhibiting cell apoptosis. In this work, we have focused on exploring novel platforms for sensitive monitoring of Sur expression, based on molecular beacons and protein modulation of plasmon-controlled fluorescence. In this framework, we show that Sur can be employed in gating the resonance energy transfer (gRET) between fluorescein isothiocyanate probe dye (FITC) and plasmonic citrate-capped gold nanoparticles (AuNP@Cit). Furthermore, we have designed fluorescent dye-bearing molecular beacons (MBs) targeting nucleotides of the survivin mRNA. The antisense oligonucleotide complementary to the target sequence, inserted in the loop area of the hairpin MB structure, has enabled the fluorescence turn-ON MB switching in the presence of the target, thus signaling the high Sur mRNA levels and enhanced Sur protein expression.

Keywords

luminescencenanostructurebiomaterial
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1720: Symposium D – Materials and Concepts for Biomedical Sensing , 2014 , mrsf14-1720-d15-22
Copyright
Copyright © Materials Research Society 2015 

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