Anti-EPO-R antibody [016]

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

Erythropoietin receptor (EPO-R) also known as EPOR plays an important role in erythropoiesis by mediating the effects of erythropoietin (EPO). EPO-R is a member of the cytokine receptor family with a mass of approximately 55 kDa. This receptor can primarily be found on the surface of erythroid progenitor cells in the bone marrow. Its presence is important for the final differentiation of these cells into mature erythrocytes.

Biological function summary

EPO-R functions by dimerizing upon EPO binding subsequently activating intracellular signaling pathways. It is a component of a larger signaling complex that recruits and activates various molecules initiating a cascade of events critical for cell survival and proliferation. This receptor signaling prevents apoptosis in erythroid progenitor cells promoting their growth and differentiation into red blood cells.

Pathways

EPO-R's activity falls within the JAK-STAT and PI3K-AKT signaling pathways. These pathways are pivotal in regulating hematopoiesis and cell survival. JAK2 acts as a direct partner to EPO-R and transduces the signal downstream while molecules like STAT5 get phosphorylated and mediate transcription of target genes. The PI3K-AKT pathway also contributes to the anti-apoptotic effect essential for erythrocyte development.

Associated diseases and disorders

Altered EPO-R signaling associates with anemia of chronic disease and polycythemia vera. Anemic conditions often show reduced sensitivity or expression of EPO-R while mutations leading to EPO-R hypersensitivity link to polycythemia vera. Dysregulation of related proteins such as JAK2 also contributes to these conditions indicating the interconnected roles of these proteins in blood-related diseases.