Article (Scientific journals)
Development of a SERS strategy to overcome the nanoparticle stabilisation effect in serum-containing samples: Application to the quantification of dopamine in the culture medium of PC-12 cells
Dumont, Elodie; De Bleye, Charlotte; Cailletaud, Johan et al.
2018In Talanta, 186, p. 8-16
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Keywords :
Surface-Enhanced Raman Scattering (SERS); Gold Nanoparticles; Dopamine; Quantitative methods; Cellular analysis; PC-12 cells
Abstract :
[en] The analysis of serum samples by surface-enhanced Raman spectroscopy (SERS) has gained ground over the last years. However, the stabilisation of colloids by the proteins contained in these samples has restricted their use in common practice, unless antibodies or aptamers are used. Therefore, this work was dedicated to the development of a SERS methodology allowing the analysis of serum samples in a simple and easy-to-implement way. This approach was based on the pre-aggregation of the colloid with a salt solution. Gold nanoparticles (AuNPs) were used as the SERS substrate and, owing to its physiopathological importance, dopamine was chosen as a model to implement the SERS approach. The presence of this neurotransmitter could be determined in the concentration range 0.5 to 50 ppm (2.64 – 264 µM) in the culture medium of PC-12 cells, with a R² of 0.9874, and even at lower concentrations (0.25 ppm, 1.32 µM) in another matrix containing fewer proteins. Moreover, the effect of calcium and potassium on the dopamine exocytosis from PC-12 cells was studied. Calcium was shown to have a predominant and dose-dependent effect. Finally, PC-12 cells were exposed to dexamethasone in order to increase their biosynthesis and release of dopamine. This increase was monitored with the developed SERS approach.
Research center :
CIRM - Centre Interdisciplinaire de Recherche sur le Médicament - ULiège
Disciplines :
Chemistry
Pharmacy, pharmacology & toxicology
Author, co-author :
Dumont, Elodie ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
De Bleye, Charlotte  ;  Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Cailletaud, Johan ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Sacre, Pierre-Yves  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Van Lerberghe, Pierre-Bernard ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Rogister, Bernard  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Rance, Graham A;  University of Nottingham > Nanoscale and Microscale Research Centre
Aylott, Jonathan W;  University of Nottingham > Pharmacy > Laboratory of Biophysics and Surface Analysis
Hubert, Philippe  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Ziemons, Eric  ;  Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Language :
English
Title :
Development of a SERS strategy to overcome the nanoparticle stabilisation effect in serum-containing samples: Application to the quantification of dopamine in the culture medium of PC-12 cells
Publication date :
15 August 2018
Journal title :
Talanta
ISSN :
0039-9140
eISSN :
1873-3573
Publisher :
Elsevier, Netherlands
Volume :
186
Pages :
8-16
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 11 April 2018

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