Dynamic Cellular Phynotyping Defines Specific Mobilization Mechanisms of Human Hematopoietic Stem and Progenitor Cells Induced by SDF1α Versus Synthetic Agents

Sci Rep. 2018 Jan 30;8(1):1841. doi: 10.1038/s41598-018-19557-x.

Abstract

Efficient mobilization of hematopoietic stem and progenitor cells (HSPC) is one of the most crucial issues for harvesting an adequate amount of peripheral HSPC for successful clinical transplantation. Applying well-defined surrogate models for the bone marrow niche, live cell imaging techniques, and novel tools in statistical physics, we have quantified the functionality of two mobilization agents that have been applied in the clinic, NOX-A12 and AMD3100 (plerixafor), as compared to a naturally occurring chemokine in the bone marrow, SDF1α. We found that NOX-A12, an L-enantiomeric RNA oligonucleotide to SDF1, significantly reduced the adhesion of HSPC to the niche surface mediated via the CXCR4-SDF1α axis, and stretched the migration trajectories of the HSPC. We found that the stretching of trajectories by NOX-A12 was more prominent than that by SDF1α. In contrast, plerixafor exhibited no detectable interference with adhesion and migration. We also found that the deformation of HSPC induced by SDF1α or plerixafor was also drastically suppressed in the presence of NOX-A12. This novel technology of quantitative assessment of "dynamic phenotypes" by physical tools has therefore enabled us to define different mechanisms of function for various extrinsic factors compared to naturally occurring chemokines.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bone Marrow / drug effects
  • Bone Marrow / metabolism
  • Bone Marrow Cells / drug effects
  • Bone Marrow Cells / metabolism
  • Cell Movement / drug effects
  • Cells, Cultured
  • Chemokine CXCL12 / metabolism*
  • Chemokines / metabolism
  • Hematopoietic Stem Cell Mobilization / methods
  • Hematopoietic Stem Cells / drug effects
  • Hematopoietic Stem Cells / metabolism*
  • Heterocyclic Compounds / pharmacology
  • Humans
  • Receptors, CXCR4 / metabolism
  • Stem Cell Niche / drug effects
  • Stem Cells / drug effects
  • Stem Cells / metabolism*

Substances

  • Chemokine CXCL12
  • Chemokines
  • Heterocyclic Compounds
  • Receptors, CXCR4
  • plerixafor octahydrochloride