Monitoring neurotransmitter release using surface-enhanced Raman spectroscopy

R.J. Dijkstra, W.J.M. Scheenen, N.J. Dam, E.W. Roubos, J.J. Meulen, ter

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

82 Citaten (Scopus)
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Surface-enhanced Raman spectroscopy (SERS) is a promising tool to monitor neurotransmitter release at the single-cell level: it is a sensitive technique that provides structural information of the released compounds and spatial information about their release sites. In this study we demonstrate that depolarization-evoked catecholamine secretion by rat phaeochromocytoma (PC12) cells can be spatially resolved by SERS using silver colloids. A suitable SERS substrate was created by adding silver colloids to the cell culture medium. Nomarski-DIC microscopy combined with reflection confocal laser scanning microscopy showed that the colloids were primarily present on top of the cell membrane. The SERS spectra were successfully corrected for the contribution of cell constituents. Dopamine and noradrenaline were localized by examining the correlation coefficient between spectra and reference catecholamine spectra. Potential improvements of the temporal resolution of the technique are discussed.
Originele taal-2Engels
Pagina's (van-tot)43-50
TijdschriftJournal of Neuroscience Methods
Nummer van het tijdschrift1
StatusGepubliceerd - 2007


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