Document Detail

Photooxidation technology for correlative light and electron microscopy.
MedLine Citation:
PMID:  23027015     Owner:  NLM     Status:  In-Data-Review    
Correlative microscopic approaches combine the advantages of both light and electron microscopy. Here we show a correlative approach that uses the photooxidation capacity of fluorescent dyes. Through illumination with high energetic light, the chromogen diaminobenzidine is oxidized and stable deposits are formed at the sites of the former fluorescent signals, which after osmification are then visible in the electron microscope. The potential of the method is illustrated by tracing the endocytic pathway of three different ligands: the lipid ceramide, high density lipoproteins, and the lectin wheat germ agglutinin. The ligands were labeled either with BODIPY or Alexa dyes. Following cell surface binding, uptake, and time-dependent intracellular progression, the route taken by these molecules together with the organelles that have been visited is characterized. Correlative microscopic data are recorded at various levels. First, by fluorescence and phase contrast illumination with the light microscope, followed by the analysis of semithin sections after photooxidation, and finally of thin sections at the ultrastructural level.
Claudia Meisslitzer-Ruppitsch; Clemens Röhrl; Carmen Ranftler; Herbert Stangl; Josef Neumüller; Margit Pavelka; Adolf Ellinger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Methods in molecular biology (Clifton, N.J.)     Volume:  931     ISSN:  1940-6029     ISO Abbreviation:  Methods Mol. Biol.     Publication Date:  2013  
Date Detail:
Created Date:  2012-10-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9214969     Medline TA:  Methods Mol Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  423-36     Citation Subset:  IM    
Department of Cell Biology and Ultrastructure Research, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.
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