Norepinephrine reuptake inhibition promotes mobilization in mice: Potential impact to rescue low stem cell yields

Daniel Lucas, Ingmar Bruns, Michela Battista, Simon Mendez-Ferrer, Claire Magnon, Yuya Kunisaki, Paul S. Frenette

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

The mechanisms mediating hematopoietic stem and progenitor cell (HSPC) mobilization by G-CSF are complex. We have found previously that G-CSF-enforced mobilization is controlled by peripheral sympathetic nerves via norepinephrine (NE) signaling. In the present study, we show that G-CSF likely alters sympathetic tone directly and that methods to increase adrenergic activity in the BM microenvironment enhance progenitor mobilization. Peripheral sympathetic nerve neurons express the G-CSF receptor and ex vivo stimulation of peripheral sympathetic nerve neurons with G-CSF reduced NE reuptake significantly, suggesting that G-CSF potentiates the sympathetic tone by increasing NE availability. Based on these data, we investigated the NE reuptake inhibitor desipramine in HSPC mobilization. Whereas desipramine did not by itself elicit circulating HSPCs, it increased G-CSF-triggered mobilization efficiency significantly and rescued mobilization in a model mimicking "poor mobilizers." Therefore, these data suggest that blockade of NE reuptake may be a novel therapeutic target to increase stem cell yield in patients.

Original languageEnglish (US)
Pages (from-to)3962-3965
Number of pages4
JournalBlood
Volume119
Issue number17
DOIs
StatePublished - Apr 19 2012

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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