Erythropoiesis in the absence of janus-kinase 2: BCR-ABL induces red cell formation in JAK2(-/-) hematopoietic progenitors.
@article{Ghaffari2001ErythropoiesisIT,
title={Erythropoiesis in the absence of janus-kinase 2: BCR-ABL induces red cell formation in JAK2(-/-) hematopoietic progenitors.},
author={Saghi Ghaffari and Claire Kitidis and Mark D Fleming and Hans J Neubauer and Klaus Pfeffer and Harvey F. Lodish},
journal={Blood},
year={2001},
volume={98 10},
pages={
2948-57
}
}The receptor-associated protein tyrosine kinase janus-kinase 2 (JAK2) is essential for normal red cell development and for erythropoietin receptor (EpoR) signaling. JAK2(-/-) embryos are severely deficient in erythropoiesis and die at an early stage of development from fetal anemia. The binding of erythropoietin (Epo) to the EpoR triggers the activation of JAK2, the phosphorylation of the EpoR, and the initiation of the EpoR signaling cascade. In addition to Epo binding to its receptor…
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References
SHOWING 1-10 OF 68 REFERENCES
BCR-ABL and v-SRC tyrosine kinase oncoproteins support normal erythroid development in erythropoietin receptor-deficient progenitor cells.
- Biology, MedicineProceedings of the National Academy of Sciences of the United States of America
- 1999
It is demonstrated that activated tyrosine kinase oncoproteins implicated in tumorigenesis and human leukemia can functionally complement for cytokine receptor signaling pathways to support normal erythropoiesis in EpoR-deficient cells.
Fetal Anemia and Apoptosis of Red Cell Progenitors in Stat5a−/−5b−/− Mice A Direct Role for Stat5 in Bcl-XL Induction
- BiologyCell
- 1999
Jak2 Deficiency Defines an EssentialDevelopmental Checkpoint in DefinitiveHematopoiesis
- Biology, MedicineCell
- 1998
Thrombopoietin rescues in vitro erythroid colony formation from mouse embryos lacking the erythropoietin receptor.
- Biology, MedicineProceedings of the National Academy of Sciences of the United States of America
- 1996
The interaction of the hormone erythropoietin and its receptor (EpoR) is though to be required for normal hematopoiesis. To define the role of EpoR in this process, the murine EpoR was disrupted by…
Erythropoietin induces Raf-1 activation and Raf-1 is required for erythropoietin-mediated proliferation.
- BiologyThe Journal of biological chemistry
- 1991
Erythropoietin-induced recruitment of Shc via a receptor phosphotyrosine-independent, Jak2-associated pathway
- BiologyThe Journal of Biological Chemistry
- 1995
Together, these studies indicate that Jak2, in part, may mediate the EPO-induced phosphorylation of Shc.
Differential effects of an erythropoietin receptor gene disruption on primitive and definitive erythropoiesis.
- Biology, MedicineGenes & development
- 1996
A fundamental difference in the molecular mechanisms stimulating primitive and definitive erythropoiesis is suggested, demonstrating that although Epo/EpoR signaling is important for Definitive erythroid cell survival and proliferation, it is not an obligatory step in differentiation.
JAK2 associates with the erythropoietin receptor and is tyrosine phosphorylated and activated following stimulation with erythropoietin
- BiologyCell
- 1993
The Erythropoietin Receptor: Structure, Activation and Intracellular Signal Transduction
- Biology, MedicineTrends in Endocrinology & Metabolism
- 1999







