alexa Inhibition of granulocytic differentiation by mNotch1.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Milner LA, Bigas A, Kopan R, BrashemStein C, Bernstein ID,

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Abstract Effective hematopoiesis requires the commitment of pluripotent and multipotent stem cells to distinct differentiation pathways, proliferation and maturation of cells in the various lineages, and preservation of pluripotent progenitors to provide continuous renewal of mature blood cells. While the importance of positive and negative cytokines in regulating proliferation and maturation of hematopoietic cells has been well documented, the factors and molecular processes involved in lineage commitment and self-renewal of multipotent progenitors have not yet been defined. In other developmental systems, cellular interactions mediated by members of the Notch gene family have been shown to influence cell fate determination by multipotent progenitors. We previously described the expression of the human Notch1 homolog, TAN-1, in immature hematopoietic precursors. We now demonstrate that constitutive expression of the activated intracellular domain of mouse Notch1 in 32D myeloid progenitors inhibits granulocytic differentiation and permits expansion of undifferentiated cells, findings consistent with the known function of Notch in other systems.
This article was published in Proc Natl Acad Sci U S A and referenced in Journal of Stem Cell Research & Therapy

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