Labeling of ultrathin resin sections for correlative light and electron microscopy

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

Correlative microscopy combines the versatility of the light microscope with the excellent spatial resolution of the electron microscope. Here, we describe fast and simple methods for correlative immunofluorescence and immunogold labeling on the very same ultrathin section. The protocols are demonstrated on sections of tissue samples embedded in the methacrylate Lowicryl K4M. Ultrathin sections are mounted on electron microscopy (EM) grids and stained simultaneously with fluorescent and gold markers. For the detection of primary antibodies, we applied either protein A gold or immunoglobulin G (IgG) gold in combination with secondary antibodies coupled to Alexa488 or Alexa555. Alternatively, the correlative marker FluoroNanogold was used, followed by silver enhancement. The samples have to be analyzed first at the light microscope and then in the transmission electron microscope (TEM), because the fluorescence is bleached by the electron beam. Labeled structures selected at the fluorescence microscope can be identified in the TEM and analyzed at high resolution. This way, fluorescent signals can be directly correlated to the corresponding subcellular structures in the area of interest.

Details

OriginalspracheEnglisch
Seiten (von - bis)75-93
Seitenumfang19
FachzeitschriftMethods in cell biology
Jahrgang111
PublikationsstatusVeröffentlicht - 2012
Peer-Review-StatusJa

Externe IDs

Scopus 84864386796
ORCID /0000-0001-5624-1717/work/142239026
ORCID /0000-0003-3017-0978/work/148145773
ORCID /0000-0001-9467-7677/work/161888176

Schlagworte

Schlagwörter

  • Animals, Fluorescent Antibody Technique, Indirect, Green Fluorescent Proteins/metabolism, Male, Mice, Microscopy, Electron, Transmission, Microscopy, Fluorescence, Microtomy, Plastic Embedding, Recombinant Fusion Proteins/metabolism, Retina/ultrastructure, Rhodopsin/metabolism, Spermatids/ultrastructure, Staining and Labeling, Testis/ultrastructure, Tissue Fixation

Bibliotheksschlagworte