Example 3
Determining Morphology of Bronchial Organotypic Cultures and Liver Spheroids
Morphology of bronchial organotypic cultures is evaluated following fixation and paraffin embedding, sectioning and staining with hematoxylin and eosin (H&E) and Alcian blue as previously described in Toxicol Sci. 2015 September; 147(1):207-21.
Liver spheroid morphology is assessed following immunostaining. In brief, liver spheroids are fixed in 4% fresh paraformaldehyde overnight. Following blocking in 1% Triton X-100/0.2% fish skin gelatin (FSG), spheroids are stained with mouse anti-cytokeratin 19 (1/500, Abcam, Cambridge, UK) diluted in PBS with 0.1% FSG for 24 hours. The primary antibody is visualized using a FITC-labeled goat anti-mouse antibody (1/500, Abcam). Spheroids are then mounted using ProLong Diamond antifade with DAPI (Thermo Fisher) and evaluated by high-content imaging on the Cellinsight™ CX7 platform (Thermo Fisher).