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Updated: Nov 6, 2025

Author Spotlight: Advancements in Correlative Light and Electron Microscopy with Fluorescent Protein Preservation
Published on: January 12, 2024
Gold nanoparticle printed coverslips to facilitate fluorescence-TEM correlative microscopy
Neeraj Prabhakar1,2, Anni Määttänen3, Jouko Peltonen3
1Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland.
Abstract:
Correlative light and electron microscopy (CLEM) allows combining the advantages of fluorescence microscopy and electron microscopy for cell imaging. Rare phenomenon expressing cells can be studied by specifically tagged fluorophores with fluorescence microscopy. Subsequently, cells can be fixed and ultra-structural details can be studied with transmission electron microscopy (TEM) at a higher resolution. However, precise landmarks are necessary to track the same cell throughout the CLEM process. In this technical report, we present a high contrast inkjet-printed gold nanoparticle patterns over commercial glass coverslip to facilitate cell tracking with correlative microscopy. High contrast and strong reflection from nano gold pattern can be used as a fixed landmark for cell identification with fluorescence microscopy. Nano gold printed letters over coverslips are visible in resin blocks, which can be further used to identify the cell of interest for performing sectioning of embedded cell blocks for TEM.
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In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

