What is GATA3 test?
GATA-binding protein 3 (GATA3) is a transcription factor of the GATA family. GATA3 is involved in the regulation of development and differentiation of a variety of human tissues including T cells, skin, kidney, mammary gland, and the central nervous system.
What cells express GATA3?
GATA3 is expressed by all ILCs including lymphoid tissue inducer (LTi) cells and natural killer (NK) cells, albeit at different levels. GATA3 is required for the development of IL-7Rα-expressing ILCs but not NK cells as shown in Figure 1.
What is the function of T bet?
T-bet is an essential regulator of effector differentiation and function in multiple different immune lineages, including CD4, CD8, NKT, ILC (including NK) and B cells. Inflammatory cytokines induce T-bet expression in a graded manner, which in turn regulates distinct differentiation outcomes.
Does GATA3 stain lymphocytes?
GATA3 is a transcription factor important in the differentiation of breast epithelia, urothelia, and subsets of T-lymphocytes.
What is Eomes T cells?
EOMES is a transcription factor that belongs to the conserved T-box gene family and regulates T-cell development and function [3,4,5]. As a master regulator of CD8+ effector and memory T cells, EOMES is critical for T-cell-mediated immune responses against pathogens [4, 6,7,8].
What is TM immunology?
T-bet (Tbx21) is an immune cell transcription factor originally described as the master regulator of Th1 cell development, although is now recognized to have a role in both the adaptive and innate immune systems. T-bet also directs T-cell homing to pro-inflammatory sites by the regulation of CXCR3 expression.
Is GATA3 positive good or bad?
Based on the DFS analysis, GATA3-positive expression was significantly associated with worse DFS in univariate analysis (hazard ratio [HR], 2.719; P = 0.012). GATA3-positive expression was also identified as an independent risk factor for recurrence in multivariate analysis (HR, 2.711; P = 0.014).
What is metastatic breast carcinoma?
Metastatic breast cancer is when cancer cells have spread from the breast to other parts of the body. It’s classified as advanced (stage 4) breast cancer. Metastatic breast cancer symptoms depend on what area of the body the cells have invaded.
What is GATA3 a marker for?
GATA3 is a useful marker in characterization not only mammary and urothelial but also for renal and germ cell tumors, mesotheliomas, and paragangliomas. The multiple specificities of GATA3 should be taken into account when using this marker to detect metastatic mammary or urothelial carcinomas.
Is GATA3 a nuclear stain?
Positive nuclear staining for GATA3 was present in 90% of breast carcinomas (27 of 30 cases) (Table 2), including a majority of both known ductal and lobular carcinomas. Staining results were unambiguous because all positive cases demonstrated strong nuclear staining in >50% of tumor cells.
Do NK cells express Tbet?
The bulk of mature murine (6, 8, 9) and human (10–12) NK cells express high levels of T-bet and Eomes, but until recently, their impact on NK cell function was not known.
