Abstract
We have studied the fluorescence properties and diffusion behaviors of gold nanoparticles (GNPs) in solution by using fluorescence correlation spectroscopy (FCS) at single molecule level. The GNPs display a high photo-saturation feature. Under illumination with strong laser light, they display higher brightness per particle (BPP) despite their low quantum yields. Based on the unique fluorescence properties and diffusion behaviors of GNPs, we have developed a sensitive and homogenous thrombin assay. It is based on a sandwich strategy and is making use of GNPs to which two different aptamers are conjugated. When the differently aptamer-labeled GNPs are mixed with solutions containing thrombin, the affinity reaction causes the GNPs to form dimers or oligomers. This leads to an increase in the diffusion time of the GNPs in the detection volume that is seen in FCS. The FCS method enables sensitive detection of the change in the characteristic diffusion time of the GNPs before and after the affinity reaction. Quantitative analysis of thrombin is based on the measurement of the change in the diffusion time. Under optimal conditions, the calibration plot is linear in the 0.5 nM to 110 nM thrombin concentration range, and the detection limit is 0.5 nM. The method was successfully applied to the direct determination of thrombin in human plasma.
Similar content being viewed by others
References
Weiss S (1999) Fluorescence spectroscopy of single biomolecules. Science 283(5408):1676–1683
Chan WC, Nie S (1998) Quantum dot bioconjugates for ultrasensitive nonisotopic detection. Science 281(5385):2016–2018
Ye C, Wang Y, Li C, Yu J, Hu Y (2013) Preparation of liposomes loaded with quantum dots, fluorescence resonance energy transfer studies, and near-infrared in-vivo imaging of mouse tissue. Microchim Acta 180(1–2):117–125
Huang X, Ren J (2012) Nanomaterial-based chemiluminescence resonance energy transfer: a strategy to develop new analytical methods. Trac Trends Anal Chem 40:77–89
Resch-Genger U, Grabolle M, Cavaliere-Jaricot S, Nitschke R, Nann T (2008) Quantum dots versus organic dyes as fluorescent labels. Nat Methods 5(9):763–775
Shiohara A, Hoshino A, Hanaki K-I, Suzuki K, Yamamoto K (2004) On the cyto-toxicity caused by quantum dots. Microbiol Immunol 48(9):669–675
Peyser LA, Vinson AE, Bartko AP, Dickson RM (2001) Photoactivated fluorescence from individual silver nanoclusters. Science 291(5501):103–106
Lu Y, Huang X, Ren J (2013) Sandwich immunoassay for alpha-fetoprotein in human sera using gold nanoparticle and magnetic bead labels along with resonance Rayleigh scattering readout. Microchim Acta 180(7–8):635–642
Huang CC, Yang Z, Lee KH, Chang HT (2007) Synthesis of highly fluorescent gold nanoparticles for sensing mercury (II). Angew Chem 119(36):6948–6952
Mei Z, Deng Y, Chu H, Xue F, Zhong Y, Wu J, Yang H, Wang Z, Zheng L, Chen W (2013) Immunochromatographic lateral flow strip for on-site detection of bisphenol A. Microchim Acta 180(3–4):279–285
Storhoff JJ, Lucas AD, Garimella V, Bao YP, Müller UR (2004) Homogeneous detection of unamplified genomic DNA sequences based on colorimetric scatter of gold nanoparticle probes. Nat Biotechnol 22(7):883–887
Patra HK, Banerjee S, Chaudhuri U, Lahiri P, Dasgupta AK (2007) Cell selective response to gold nanoparticles. Nanomed-Nanotechnol 3(2):111–119
Tcherniak A, Dominguez-Medina S, Chang W-S, Swanglap P, Slaughter LS, Landes CF, Link S (2011) One-photon plasmon luminescence and its application to correlation spectroscopy as a probe for rotational and translational dynamics of gold nanorods. J Phys Chem C 115(32):15938–15949
Saha K, Agasti SS, Kim C, Li X, Rotello VM (2012) Gold nanoparticles in chemical and biological sensing. Chem Rev 112(5):2739–2779
Gaiduk A, Yorulmaz M, Orrit M (2011) Correlated absorption and photoluminescence of single gold nanoparticles. ChemPhysChem 12(8):1536–1541
Geddes CD, Parfenov A, Gryczynski I, Lakowicz JR (2003) Luminescent blinking of gold nanoparticles. Chem Phys Lett 380(3):269–272
Loumaigne M, Vasanthakumar P, Lombardi A, Richard A, Débarre A (2013) One-photon excited luminescence of single gold particles diffusing in solution under pulsed illumination. Phys Chem Chem Phys 15:4154–4162
Chen J, Irudayaraj J (2009) Quantitative investigation of compartmentalized dynamics of ErbB2 targeting gold nanorods in live cells by single molecule spectroscopy. ACS Nano 3(12):4071–4079
Fang Y, Chang W-S, Willingham B, Swanglap P, Dominguez-Medina S, Link S (2012) Plasmon emission quantum yield of single gold nanorods as a function of aspect ratio. ACS Nano 6(8):7177–7184
Goldys EM, Sobhan MA (2012) Fluorescence of colloidal gold nanoparticles is controlled by the surface adsorbate. Adv Funct Mater 22(9):1906–1913
He H, Xie C, Ren J (2008) Nonbleaching fluorescence of gold nanoparticles and its applications in cancer cell imaging. Anal Chem 80(15):5951–5957
Wang X, Zhao Q (2012) A fluorescent sandwich assay for thrombin using aptamer modified magnetic beads and quantum dots. Microchim Acta 178(3–4):349–355
Hu J, Zheng P-C, Jiang J-H, Shen G-L, Yu R-Q, Liu G-K (2008) Electrostatic interaction based approach to thrombin detection by surface-enhanced Raman spectroscopy. Anal Chem 81(1):87–93
Wang H, Liu Y, Liu C, Huang J, Yang P, Liu B (2010) Microfluidic chip-based aptasensor for amplified electrochemical detection of human thrombin. Electrochem Commun 12(2):258–261
Dong C, Qian H, Fang N, Ren J (2006) Study of fluorescence quenching and dialysis process of CdTe quantum dots, using ensemble techniques and fluorescence correlation spectroscopy. J Phys Chem B 110(23):11069–11075
Haustein E, Schwille P (2007) Fluorescence correlation spectroscopy: novel variations of an established technique. Annu Rev Biophys Biomol Struct 36:151–169
Freeman RG, Hommer MB, Grabar KC, Jackson MA, Natan MJ (1996) Ag-clad Au nanoparticles: novel aggregation, optical, and surface-enhanced Raman scattering properties. J Phys Chem 100(2):718–724
Xu CS, Cang H, Montiel D, Yang H (2007) Rapid and quantitative sizing of nanoparticles using three-dimensional single-particle tracking. J Phys Chem C 111(1):32–35
Bowman LJ, Anderson CD, Chapman WC (2010) Topical recombinant human thrombin in surgical hemostasis. Semin Thromb Hemost 36:477–484
Even-Ram S, Uziely B, Cohen P, Grisaru-Granovsky S, Maoz M, Ginzburg Y, Reich R, Vlodavsky I, Bar-Shavit R (1998) Thrombin receptor overexpression in malignant and physiological invasion processes. Nat Med 4(8):909–914
Jayasena SD (1999) Aptamers: an emerging class of molecules that rival antibodies in diagnostics. Clin Chem 45(9):1628–1650
Bock LC, Griffin LC, Latham JA, Vermaas EH, Toole JJ (1992) Selection of single-stranded DNA molecules that bind and inhibit human thrombin. Nature 355:564–566
Tasset DM, Kubik MF, Steiner W (1997) Oligonucleotide inhibitors of human thrombin that bind distinct epitopes. J Mol Biol 272(5):688–698
Müller J, Becher T, Braunstein J, Berdel P, Gravius S, Rohrbach F, Oldenburg J, Mayer G, Pötzsch B (2011) Profiling of active thrombin in human blood by supramolecular complexes. Angew Chem Int Ed 50(27):6075–6078
Zhao Q, Li X-F, Le XC (2011) Aptamer capturing of enzymes on magnetic beads to enhance assay specificity and sensitivity. Anal Chem 83(24):9234–9236
Acknowledgments
We gratefully acknowledge the supports of NSFC (21075081, 20975067, 20905048, 21135004), National Basic Research Program of China (2009CB930400). We also thank Miss Yao Lu for her assistant in conjugation of GNPs with aptamers.
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Below is the link to the electronic supplementary material.
ESM 1
(PDF 430 kb)
Rights and permissions
About this article
Cite this article
Xu, Z., Huang, X., Dong, C. et al. Fluorescence correlation spectroscopy of gold nanoparticles, and its application to an aptamer-based homogeneous thrombin assay. Microchim Acta 181, 723–730 (2014). https://doi.org/10.1007/s00604-013-1132-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00604-013-1132-2