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Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization.

Publication ,  Journal Article
Espinosa-Heidmann, DG; Reinoso, MA; Pina, Y; Csaky, KG; Caicedo, A; Cousins, SW
Published in: Exp Eye Res
March 2005

Choroidal neovascularization (CNV) is characterized by the subretinal invasion of a pathologic new vessel complex from the choriocapillaris. Although CNV is traditionally considered to consist of endothelial cells, the cellular population of CNV is likely more complex in nature, comprising several different cell types. In addition, recent studies suggest that the CNV cell population has a dual origin (circulating versus resident populations). In this study we sought to determine the contribution and origin of different cell types in experimental CNV. Laser-induced CNV was performed on chimeric mice generated by reconstituting C57BL/6 mice with bone marrow from green fluorescent protein (GFP)-transgenic mice. In these mice, bone marrow-derived cells are GFP-labeled. Immunofluorescence staining was used to examine both flatmount preparations of the choroid and cross sections of the posterior pole for macrophages, endothelial cells, vascular smooth muscle cells, retinal pigment epithelial (RPE) cells, lymphocytes, or neutrophils at day 3, 7, 14 and 28 post-laser (n=5 per group). Cell types present in CNV included macrophages (20% of the cells in CNV), endothelial cells (25%), vascular smooth muscle cells (11%), RPE cells (12%) and non-labeled cells (32%). The macrophage population was mostly derived from circulating monocytes at all timepoints studied (70% were GFP labeled), while endothelial and vascular smooth muscle cells were partly bone marrow derived (50-60% were GFP labeled), and RPE cells appeared to be entirely derived from preexisting tissue resident cells. These results demonstrate that bone marrow-derived progenitor cells contribute significantly to the vascular and inflammatory components of CNV. Knowledge of the cellular composition and origin might help understand the pathogenic mechanisms controlling CNV severity as well as indicate potential targets for therapeutic intervention.

Duke Scholars

Published In

Exp Eye Res

DOI

ISSN

0014-4835

Publication Date

March 2005

Volume

80

Issue

3

Start / End Page

369 / 378

Location

England

Related Subject Headings

  • Transplantation Chimera
  • Stem Cells
  • Pigment Epithelium of Eye
  • Ophthalmology & Optometry
  • Muscle, Smooth, Vascular
  • Mice, Inbred C57BL
  • Mice
  • Macrophages
  • Immunohistochemistry
  • Green Fluorescent Proteins
 

Citation

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Espinosa-Heidmann, D. G., Reinoso, M. A., Pina, Y., Csaky, K. G., Caicedo, A., & Cousins, S. W. (2005). Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization. Exp Eye Res, 80(3), 369–378. https://doi.org/10.1016/j.exer.2004.10.005
Espinosa-Heidmann, Diego G., Maria A. Reinoso, Yolanda Pina, Karl G. Csaky, Alejandro Caicedo, and Scott W. Cousins. “Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization.Exp Eye Res 80, no. 3 (March 2005): 369–78. https://doi.org/10.1016/j.exer.2004.10.005.
Espinosa-Heidmann DG, Reinoso MA, Pina Y, Csaky KG, Caicedo A, Cousins SW. Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization. Exp Eye Res. 2005 Mar;80(3):369–78.
Espinosa-Heidmann, Diego G., et al. “Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization.Exp Eye Res, vol. 80, no. 3, Mar. 2005, pp. 369–78. Pubmed, doi:10.1016/j.exer.2004.10.005.
Espinosa-Heidmann DG, Reinoso MA, Pina Y, Csaky KG, Caicedo A, Cousins SW. Quantitative enumeration of vascular smooth muscle cells and endothelial cells derived from bone marrow precursors in experimental choroidal neovascularization. Exp Eye Res. 2005 Mar;80(3):369–378.
Journal cover image

Published In

Exp Eye Res

DOI

ISSN

0014-4835

Publication Date

March 2005

Volume

80

Issue

3

Start / End Page

369 / 378

Location

England

Related Subject Headings

  • Transplantation Chimera
  • Stem Cells
  • Pigment Epithelium of Eye
  • Ophthalmology & Optometry
  • Muscle, Smooth, Vascular
  • Mice, Inbred C57BL
  • Mice
  • Macrophages
  • Immunohistochemistry
  • Green Fluorescent Proteins