In the postnatal mammalian brain, neural stem cells of the ventricular-subventricular zone continue to generate doublecortin (Dcx)-expressing immature neurons. Throughout life, these immature neurons migrate to the olfactory bulb through the rostral migratory stream (RMS). In this study, we investigated the distribution of these putative immature neurons using enhanced green fluorescent protein (EGFP) expression in the area surrounding the RMS of the juvenile Dcx-EGFP mice. Through the combined use of an optical clearing reagent (a 2,2'-thiodiethanol solution) and two-photon microscopy, we visualized three-dimensionally the EGFP-positive cells in the entire RMS and its surroundings. The resulting wide-field and high-definition images along with computational image processing methods developed in this study were used to comprehensively determine the position of the EGFP-positive cells. Our findings revealed that the EGFP-positive cells were heterogeneously distributed in the area surrounding the RMS. In addition, the orientation patterns of the leading process of these cells, which displayed the morphology of migrating immature neurons, differed depending on their location. These novel results provide highly precise morphological information for immature neurons and suggest that a portion of immature neurons may be detached from the RMS and migrate in various directions.
Pubmed ID: 30136724 RIS Download
Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.
This polyclonal secondary targets IgG (H+L)
View all literature mentionsThis unknown targets Rabbit IgG (H+L)
View all literature mentionsThis unknown targets Mouse IgG (H+L)
View all literature mentionsThis monoclonal targets Green Fluorescent Protein
View all literature mentionsThis polyclonal targets Doublecortin
View all literature mentionsThis monoclonal targets GFAP
View all literature mentionsThis monoclonal targets Green Fluorescent Protein
View all literature mentionsThis polyclonal secondary targets IgG (H+L)
View all literature mentionsThis unknown targets Rabbit IgG (H+L)
View all literature mentionsThis unknown targets Mouse IgG (H+L)
View all literature mentionsThis monoclonal targets GFAP
View all literature mentionsThis polyclonal targets Doublecortin
View all literature mentions