The Erythropoietin Receptor and Signal Transduction
نویسندگان
چکیده
منابع مشابه
Erythropoietin receptor signal transduction requires protein geranylgeranylation.
Erythropoietin (Epo) acts through the erythropoietin receptor, a member of the type-1 cytokine receptor family, to influence survival, proliferation, and differentiation of erythroid progenitors. Epo stimulation of factor-dependent 32D cells results in phosphorylation of many proteins, including Janus kinase (Jak) 2, signal transducer and activator of transcription (Stat) 5, and extracellular s...
متن کاملErythropoietin Signal Transduction in Human Erythroid Precursors
Erythropoietin induces a dose-dependent increase in cytosolic calcium in human erythroblasts that is mediated by a voltage-independent Ca 2 1 channel. Inhibition of this response to erythropoietin by pertussis toxin suggests involvement of guanine nucleotide-binding regulatory proteins (G-proteins). The role of G-proteins in regulation of the erythropoietin-modulated Ca 2 1 channel was delineat...
متن کاملTyrosine phosphorylation of the erythropoietin receptor: role for differentiation and mitogenic signal transduction.
The erythropoietin (Epo) receptor belongs to the cytokine receptor superfamily. Although the cytokine receptors do not possess a tyrosine kinase consensus sequence in the intracellular domain, rapid stimulation of a tyrosine kinase activity occurs after activation by the ligand. We and others have shown that Epo induces the tyrosine phosphorylation of its cognate receptor as well as phosphoryla...
متن کاملSelf assembly of the transmembrane domain promotes signal transduction through the erythropoietin receptor
Hematopoietic cytokine receptors, such as the erythropoietin receptor (EpoR), are single membrane-spanning proteins. Signal transduction through EpoR is crucial for the formation of mature erythrocytes. Structural evidence shows that in the unliganded form EpoR exists as a preformed homodimer in an open scissor-like conformation precluding the activation of signaling. In contrast to the extrace...
متن کاملSignal transduction by the platelet Fc receptor.
We have evaluated the mechanism by which crosslinking human platelet Fc receptor (FcR) for IgG triggers platelet aggregation and the platelet release reaction. Platelet FcR was crosslinked by incubating purified human platelets with anti-FcRII monoclonal antibody and F(ab')2 anti-mouse Ig. The resultant [Ca2+]i increase, monitored by Fura-2 and measured in the absence of extracellular Ca2+, rea...
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ژورنال
عنوان ژورنال: The Oncologist
سال: 1996
ISSN: 1083-7159,1549-490X
DOI: 10.1634/theoncologist.1-5-337