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- Title
Catecholaminergic neurotransmitters regulate migration and repopulation of immature human CD34<sup>+</sup> cells through Wnt signaling.
- Authors
Spiegel, Asaf; Shivtiel, Shoham; Kalinkovich, Alexander; Ludin, Aya; Netzer, Neta; Goichberg, Polina; Azaria, Yaara; Resnick, Igor; Hardan, Izhar; Ben-Hur, Herzel; Nagler, Arnon; Rubinstein, Menachem; Lapidot, Tsvee
- Abstract
Catecholamines are important regulators of homeostasis, yet their functions in hematopoiesis are poorly understood. Here we report that immature human CD34+ cells dynamically expressed dopamine and β2-adrenergic receptors, with higher expression in the primitive CD34+CD38lo population. The myeloid cytokines G-CSF and GM-CSF upregulated neuronal receptor expression on immature CD34+ cells. Treatment with neurotransmitters increased the motility, proliferation and colony formation of human progenitor cells, correlating with increased polarity, expression of the metalloproteinase MT1-MMP and activity of the metalloproteinase MMP-2. Treatment with catecholamines enhanced human CD34+ cell engraftment of NOD-SCID mice through Wnt signaling activation and increased cell mobilization and bone marrow Sca-1+c-Kit+Lin− cell numbers. Our results identify new functions for neurotransmitters and myeloid cytokines in the direct regulation of human and mouse progenitor cell migration and development.
- Publication
Nature Immunology, 2007, Vol 8, Issue 10, p1123
- ISSN
1529-2908
- Publication type
Article
- DOI
10.1038/ni1509