GATA3 is a transcription factor that in humans is encoded by the GATA3 gene. Studies in animal models and humans indicate that it controls the expression of a wide range of biologically and clinically important genes. The GATA3 transcription factor is critical for the embryonic development of various tissues as well as for inflammatory and humoral immune responses and the proper functioning of the endothelium of blood vessels. GATA3 haploinsufficiency (i.e. lose of one or the two inherited GATA3 genes) results in a congenital disorder termed the Barakat syndrome. Current clinical and laboratory research is focusing on determining the benefits of directly or indirectly blocking the action of GATA3 in inflammatory and allergic diseases such as asthma. It is also proposed to be a clinically important marker for various types of cancer, particularly those of the breast. However, the role, if any, of GATA3 in the development of these cancers is under study and remains unclear.
Background References
1. Zhu Z et al. GATA3 mediates doxorubicin resistance by inhibiting CYB5R2-catalyzed iron reduction in breast cancer cells. Drug Resist Updat. 2023 Jul
2. Bacha R et al. Unveiling GATA3 Signaling Pathways in Health and Disease: Mechanisms, Implications, and Therapeutic Potential. Cells. 2024 Dec
Western blot analysis of GATA3 on different lysates with Rabbit anti-GATA3 antibody (HA724518) at 1/5,000 dilution.
Lane 1: SH-SY5Y (Human neuroblastoma cell) cell lysate
Lane 2: Jurkat (Human T-lymphoblastic cells) cell lysate
Lane 3: MCF7 (Human breast cancer cell) cell lysate
Lane 4: MDA-MB-231 (Human breast cancer cell) cell lysate
Lysates/proteins at 20 µg/Lane.
Exposure time: 10 seconds; ECL: K1801
Low expression of GATA3 protein in MDA-MB-231 is consistent with the predicted expression pattern.
Blocking: 5% NFDM/TBST, 1 hour at room temperature
Primary antibody: HA724518, 1/5,000 in primary antibody dilution buffer (K1803), overnight at 4 °C
Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 48 kDa
Observed band size: 48 kDa
Application: Immunocytochemistry (IF-cell)
Species: Human
Sample: SH-SY5Y (Human neuroblastoma cell)
Fixation: 4% Paraformaldehyde, 15 minutes at room temperature.
Permeabilization: 0.1% Triton X-100, 15 minutes at room temperature.
Blocking: 1% BSA + 10% normal goat serum, 1 hour at room temperature.
Antibody dilution buffer: 1% BSA in PBST.
Primary antibody: HA724518, 1/100, overnight at 4°C.
Secondary antibody: Goat Anti-Rabbit IgG (iFluor™ 488, HA1121), 45 minutes at room temperature.
Counterstain: Beta tubulin (HA601187, Red), 1/100, overnight at 4℃. The nuclear counterstain was DAPI (Blue).
Application: Immunohistochemistry (IHC-P)
Species: Human
Tissue: Urothelial carcinoma
Sample: Paraffin-embedded section