Coronal brain sections (40 μm thick) were prepared from injected BAY 73-4506 clinical trial mice at 14 dpi and processed for immunostaining as previously described (Duan et al., 2007 and Ge et al., 2006). For rescue experiments
(Figure 2), anti-GFP antibodies (rabbit, 1:1000, Abcam) were used to enhance the signaling for all conditions in parallel. The sections were incubated for 30 min in 4′,6′-diaminodino-2-phenylindole (DAPI, 1:5000) before washing and mounting. Images were acquired on a META multiphoton confocal system (Zeiss LSM 510) using a multi-track configuration. At least two animals for each condition were analyzed. Statistical comparison of data was performed by ANOVA. For analysis of cell morphology, Z-series stacks of confocal images were taken and a single confocal image slice with the largest
soma area for individual GFP+ neurons was used Screening Library mw for quantification using NIH ImageJ program. For analysis of neuronal positioning, single section confocal images of GFP+ neurons with DAPI staining were used to determine the cell localization within four areas as defined in Figure 1B. For analysis of dendritic development, three-dimensional (3D) reconstruction of entire dendritic processes of each GFP+ neuron was made from Z-series stacks of confocal images. The 2D projection images were traced with NIH ImageJ. All GFP+ dentate granule cells with largely intact dendritic trees were analyzed for total dendritic length as previously described (Duan et al., 2007 and Ge et al., 2006). The measurements did not include corrections for inclinations of dendritic process and therefore represented projected lengths. Sholl analysis for dendritic complexity was carried out by counting the number
of dendrites that crossed a series of concentric circles at 10 μm intervals from the cell soma as previously described (Duan et al., 2007). For analysis of axonal development, cross-sections (50 μm thick) taken perpendicular to the long axis (septal-temporal) were prepared from dissected hippocampi of fixed mouse brain at 14 dpi and processed for immunostaining using anti-GFP antibodies (goat, 1:500, Rockland) and DAPI (1:5000). 3D reconstructions of entire images were obtained using stitch and maximum intensity projection Terminal deoxynucleotidyl transferase functions in the Zen software (Zeiss). For the ZHH sample, the same study group as previously analyzed for DISC1 and NDEL1 interaction were used ( Burdick et al., 2008). Briefly, the cohort included 279 Caucasian patients with schizophrenia or schizoaffective disorder (SZ; 35.5% female) with a mean age of 38.6 ± 10.8 years and an estimated IQ of 96.6 ± 8.5 (based on WRAT-3 Reading). All subjects provided written informed consent to an Institutional Review Board of the North Shore-Long Island Jewish Health System (NSLIJHS)-approved protocol. Clinical characteristics that were collected included duration of illness (17.0 ± 10.8 years) and global assessment of function (GAF; 38.7 ± 15.6).