Bone marrow stem and progenitor cell contribution to neovasculogenesis is dependent on model system with SDF-1 as a permissive trigger. Academic Article uri icon

Overview

MeSH

  • Animals
  • Bone Marrow Cells
  • Carcinoma, Lewis Lung
  • Ischemia
  • Melanoma, Experimental
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Models, Biological
  • Receptors, CXCR4
  • Retinal Vessels

MeSH Major

  • Chemokine CXCL12
  • Hematopoietic Stem Cells
  • Neovascularization, Pathologic
  • Neovascularization, Physiologic

abstract

  • Adult bone marrow (BM) contributes to neovascularization in some but not all settings, and reasons for these discordant results have remained unexplored. We conducted novel comparative studies in which multiple neovascularization models were established in single mice to reduce variations in experimental methodology. In different combinations, BM contribution was detected in ischemic retinas and, to a lesser extent, Lewis lung carcinoma cells, whereas B16 melanomas showed little to no BM contribution. Using this spectrum of BM contribution, we demonstrate the necessity for site-specific expression of stromal-derived factor-1alpha (SDF-1alpha) and its mobilizing effects on BM. Blocking SDF-1alpha activity with neutralizing antibodies abrogated BM-derived neovascularization in lung cancer and retinopathy. Furthermore, secondary transplantation of single hematopoietic stem cells (HSCs) showed that HSCs are a long-term source of neovasculogenesis and that CD133(+)CXCR4(+) myeloid progenitor cells directly participate in new blood vessel formation in response to SDF-1alpha. The varied BM contribution seen in different model systems is suggestive of redundant mechanisms governing postnatal neovasculogenesis and provides an explanation for contradictory results observed in the field.

publication date

  • November 5, 2009

has subject area

  • Animals
  • Bone Marrow Cells
  • Carcinoma, Lewis Lung
  • Chemokine CXCL12
  • Hematopoietic Stem Cells
  • Ischemia
  • Melanoma, Experimental
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Models, Biological
  • Neovascularization, Pathologic
  • Neovascularization, Physiologic
  • Receptors, CXCR4
  • Retinal Vessels

Research

keywords

  • Journal Article

Identity

Language

  • eng

PubMed Central ID

  • PMC2774559

Digital Object Identifier (DOI)

  • 10.1182/blood-2009-03-211342

PubMed ID

  • 19717647

Additional Document Info

start page

  • 4310

end page

  • 4319

volume

  • 114

number

  • 19