Western blot analysis of GATA3 was performed by loading 15ug of SH-SY5Y whole cell lysate (WCL) and SH-SY5Y nuclear extract (NE) onto a 4-20% Tris-HCl polyacrylamide gel. Proteins were transferred to a PVDF membrane and blocked for at least 1 hour. The membrane was probed with Mouse anti GATA3 at a dilution of 1/1000 overnight at 4 degree C on a rocking platform, washed in TBS-0.1%Tween-20, and probed with an HRP-conjugated goat anti-mouse IgG secondary antibody for 1 hour. Chemiluminescent detection was performed
Immunofluorescent analysis of GATA3 (green) in MCF7 cells. Formalin-fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 10 minutes at room temperature. Cells were blocked with 1% Blocker BSA for 15 minutes at room temperature. Cells were probed without (left panel) or with (right panel) Mouse anti GATA3 at a dilution of 1/50 for at least 1 hour at room temperature, washed with PBS, and incubated with a DyLight 488-conjugated goat anti-mouse IgG secondary antibody for 30 minutes at room temperature. F-Actin (red) was stained with phalloidin (red) and nuclei (blue) were stained with Hoechst 33342 dye. Images were taken at 20x magnification
Immunohistochemistry analysis of GATA3 showing staining in the nucleus of paraffin-embedded human breast carcinoma (right) compared to a negative control without primary antibody (left). To expose target proteins, antigen retrieval was performed using 10mM sodium citrate (pH 6.0), microwaved for 8-15 min. Following antigen retrieval, tissues were blocked in 3% H2O2-methanol for 15 min at room temperature, washed with dH2O and PBS, and then probed with a Mouse anti GATA3 diluted in 3% BSA-PBS at a dilution of 1/1000 overnight at 4 degree C in a humidified chamber. Tissues were washed extensively in PBST and detection was performed using an HRP-conjugated secondary antibody followed by colorimetric detection using a DAB kit. Tissues were counterstained with hematoxylin and dehydrated with ethanol and xylene to prep for mounting