Related Experiment Video
Updated: Jul 19, 2026

Nanogold Labeling of the Yeast Endosomal System for Ultrastructural Analyses
Published on: July 14, 2014
In vivo molecular probing of cellular compartments with gold nanoparticles and nanoaggregates
Janina Kneipp1, Harald Kneipp, Margaret McLaughlin
1Wellman Center for Photomedicine, Harvard University, Medical School, Boston, Massachusetts 02114, USA. jkneipp@janina-kneipp.de
Abstract:
Surface-enhanced Raman (SERS) signatures were measured from single living cells at different times after the uptake of gold nanoparticles. The spectra are indicative of chemical changes in the environment of the nanostructures over time. The increase of the SERS signal strength and parallel TEM studies indicate the formation of nanoaggregates providing optimum SERS enhancement for ultrasensitive probing inside the endosomal compartment. The results have implications for medical and biotechnology applications of SERS nanosensors in cells.

