Eomesodermin (EOMES)

Eomesodermin (EOMES) is a T-box transcription factor essential in early mammalian embryogenesis and immune cell lineage specification. In embryonic development, it plays a pivotal role in specifying extraembryonic lineages such as the trophectoderm and in the sequential specification of mesodermal derivatives required for heart, yolk sac, and endoderm formation[1][2]. EOMES regulates the maintenance of trophoblast stem cells, supports epithelial to mesenchymal transition, and partners with other transcription factors and chromatin-modifying complexes to maintain chromatin accessibility at lineage-specific genes[1]. In the immune system, EOMES is critical for the differentiation, effector functions, and memory formation of CD8+ T lymphocytes, integrating extracellular signals and driving expression of genes such as interferon-γ, perforin, and granzyme B[3]. Disruption of EOMES leads to developmental arrest in embryos and can skew immune cell fate decisions, underlining its essential regulatory roles across multiple biological contexts[1][2][3].

Other names

Eomesodermin homologEOMESTBR2T-brain-2T-box brain protein 2T-box brain2TBR-2