Article (Scientific journals)
Development of a prototype device for near real-time surface-enhanced Raman scattering monitoring of biological samples
Dumont, Elodie; De Bleye, Charlotte; Rademaker, Gilles et al.
2021In Talanta, 224, p. 121866
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Keywords :
Surface-Enhanced Raman Scattering (SERS); Solid SERS substrates; Protein corona; Biological samples; Handheld Raman spectrophotometer; Near real-time monitoring
Abstract :
[en] With the fast growth of bioanalytical surface-enhanced Raman scattering (SERS), analytical methods have had to adapt to the complex nature of biological samples. In particular, interfering species and protein adsorption onto the SERS substrates have been addressed by sample preparation steps, such as precipitation or extraction, and by smart SERS substrate functionalisation. These additional handling steps however result in irreversible sample alteration, which in turn prevents sample monitoring over time. A new methodology, that enables near real-time, non-invasive and non-destructive SERS monitoring of biological samples, is therefore proposed. It combines solid SERS substrates, benefitting from liquid immersion resistance for extended periods of time, with an original protein filtering device and an on-field detection by means of a handheld Raman analyser. The protein removal device aims at avoiding protein surface fouling on the SERS substrate. It consists of an ultracentrifugation membrane fixed under a cell culture insert for multi-well plates. The inside of the insert is dedicated to containing biological samples. The solid SERS substrate and a simple medium, without any protein, are placed under the insert. By carefully selecting the membrane molecular weight cutoff, selective diffusion of small analytes through the device could be achieved whereas larger proteins were retained inside the insert. Non-invasive SERS spectral acquisition was then carried out through the bottom of the multi-well plate. The diffusion of a SERS probe, 2-mercaptopyridine, and of a neurotransmitter having a less intense SERS signal, serotonin, were first successfully monitored with the device. Then, the latter was applied to distinguish between subclones of cancerous cells through differences in metabolite production. This promising methodology showed a high level of versatility, together with the capability to reduce cellular stress and contamination hazards.
Research center :
CIRM - Centre Interdisciplinaire de Recherche sur le Médicament - ULiège
Disciplines :
Pharmacy, pharmacology & toxicology
Chemistry
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
Rademaker, Gilles  ;  Université de Liège - ULiège > Cancer-Metastases Research Laboratory
Coic, Laureen  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Horne, Julie ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Sacre, Pierre-Yves  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Peulen, Olivier  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Hubert, Philippe  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Ziemons, Eric  ;  Université de Liège - ULiège > Département de pharmacie > Chimie analytique
Language :
English
Title :
Development of a prototype device for near real-time surface-enhanced Raman scattering monitoring of biological samples
Publication date :
01 March 2021
Journal title :
Talanta
ISSN :
0039-9140
eISSN :
1873-3573
Publisher :
Elsevier, Netherlands
Volume :
224
Pages :
121866
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Fonds Léon Fredericq [BE]
FEDER - Fonds Européen de Développement Régional [BE]
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