Detection and isolation of the erythropoietin receptor using biotinylated erythropoietin

Detection and isolation of the erythropoietin receptor using biotinylated erythropoietin.

Procedures have been developed to label human erythropoietin (Ep) with biotin to detect and isolate the Ep-receptor. The labeling method used the abundant carbohydrate groups on Ep and resulted in biologically active biotin-Ep (b-Ep) containing 8 to 10 biotins per Ep molecule. Specific binding of b-Ep to cells from spleens of mice made anemic by phenylhydrazine injections was demonstrated using...

Development of Radiolabeled Recombinant Erythropoietin for Receptor Studies

Expression of erythropoietin and erythropoietin receptor in peritoneal endometriosis.

BACKGROUND Recent studies have indicated new physiological roles for erythropoietin (Epo) unrelated to erythropoiesis. We previously demonstrated that the Epo concentrations in peritoneal fluid from patients with stage I endometriosis were significantly higher than those with stages II, III and IV of the disease. Therefore, we hypothesized that Epo may play a role in the pathogenesis of endomet...

Erythropoietin and erythropoietin receptor expression in human cancer.

Erythropoietin (EPO) stimulates the growth of erythroblasts in the bone marrow (C. Lacombe and P. Mayeux, NEPHROL: DIAL: TRANSPLANT:, 14 (SUPPL: 2): 22-28, 1999). We report basal and hypoxia-stimulated expression of EPO and its receptor, EPOR, in human breast cancer cells, and we demonstrate EPO-stimulated tyrosine phosphorylation and the proliferation of these cells in vitro. In 50 clinical sp...

Human Cancer Erythropoietin and Erythropoietin Receptor Expression in

Erythropoietin (EPO) stimulates the growth of erythroblasts in the bone marrow (C. Lacombe and P. Mayeux, Nephrol. Dial. Transplant., 14 (Suppl. 2): 22–28, 1999). We report basal and hypoxia-stimulated expression of EPO and its receptor, EPOR, in human breast cancer cells, and we demonstrate EPO-stimulated tyrosine phosphorylation and the proliferation of these cells in vitro. In 50 clinical sp...