A tridimensional view of the organization of actin filaments in the central nervous system by use of fluorescent photooxidation

Autor: Francisco, Capani, Ezequiel, Saraceno, Valeria Romina, Boti, Laura, Aon-Bertolino, Juan Carlos, Fernández, Fernándo, Gato, Maria Sol, Kruse, Maria Sol, Krause, Lisandro, Giraldez, Mark H, Ellisman, Héctor, Coirini
Rok vydání: 2008
Předmět:
Zdroj: Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al. 32(1)
ISSN: 0327-9545
Popis: Cellular and subcellular organization and distribution of actin filaments have been studied with various techniques. The use of fluorescence photo-oxidation combined with phalloidin conjugates with eosin has allowed the examination of the precise cellular and subcellular location of F-actin. Correlative fluorescence light microscopy and transmission electron microscopy studies of F-actin distribution are facilitated with this method for morphological and physiological studies. Because phalloidin-eosin is smaller than other markers, this method allows the analysis of the three-dimensional location of F-actin with high-resolution light microscopy, three-d serial sections reconstructions, and electron tomography. The combination of selective staining and three-dimensional reconstructions provide a valuable tool for revealing aspects of the synaptic morphology that are not available when conventional electron microscopy is used. By applying this selective staining technique and three-dimensional imaging, we uncovered the structural organization of actin in the postsynaptic densities in physiological and pathological conditions.
Databáze: OpenAIRE