EphB3

EphB3 shares with EphB2 a central role in intestinal architecture, helping to segregate proliferative crypt cells from differentiated epithelium through forward signaling from ephrin-B ligands. Its expression extends to the immune system, where EphB3 on thymocytes and T cells participates in thymocyte selection, T-cell activation and adhesion, and it has been examined as a marker in leukemias and lymphomas. In the nervous system, EphB3 contributes to hippocampal plasticity and to regeneration after injury. Testis and colorectal tissue are additional sites of expression, with altered EphB3 levels reported in colorectal and prostate cancers. Recombinant EphB3 supports epithelial and immunological Eph research.