Cited by 1,153Angiogenesis and VEGF in CancerLymphatic System and DiseasesZebrafish Biomedical Research Applications

Tissue macrophages act as cellular chaperones for vascular anastomosis downstream of VEGF-mediated endothelial tip cell induction

Open access
Fantin, Alessandro, Vieira, Joaquim M., Gestri, Gaia, Denti, Laura, Schwarz, Quenten, Prykhozhij, Sergey, Peri, Francesca, Wilson, Stephen W. +1 more·2010·Blood

Abstract

Blood vessel networks expand in a 2-step process that begins with vessel sprouting and is followed by vessel anastomosis. Vessel sprouting is induced by chemotactic gradients of the vascular endothelial growth factor (VEGF), which stimulates tip cell protrusion. Yet it is not known which factors promote the fusion of neighboring tip cells to add new circuits to the existing vessel network. By combining the analysis of mouse mutants defective in macrophage development or VEGF signaling with live imaging in zebrafish, we now show that macrophages promote tip cell fusion downstream of VEGF-mediated tip cell induction. Macrophages therefore play a hitherto unidentified and unexpected role as vascular fusion cells. Moreover, we show that there are striking molecular similarities between the pro-angiogenic tissue macrophages essential for vascular development and those that promote the angiogenic switch in cancer, including the expression of the cell-surface proteins TIE2 and NRP1. Our findings suggest that tissue macrophages are a target for antiangiogenic therapies, but that they could equally well be exploited to stimulate tissue vascularization in ischemic disease.

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Crossref · 10.1182/blood-2009-12-257832

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  • Microglia associate with endothelial tip cells during embryonic brain and postnatal retinal angiogenesis.

    “microglia associate with endothelial tip cells, as demonstrated during embryonic brain and postnatal retinal angiogenesis”

    From The impact of microglial activation on blood-brain barrier in brain diseases (2014) · cites this paper as Fantin et al., 2010

  • Microglia play a role in CNS angiogenesis by serving as a bridge to promote tip cell fusion, vascular plexus growth following sprouting induction and tip cell migration by VEGF.

    “the authors suggest that microglia play a role in CNS angiogenesis by serving as a bridge to promote tip cell fusion, vascular plexus growth following sprouting induction and tip cell migration by VEGF (Fantin et al., 2010).”

    From The impact of microglial activation on blood-brain barrier in brain diseases (2014) · cites this paper as Fantin et al., 2010

  • Microglia are present in the embryonic CNS territory prior to endothelial invasion and participate in cerebrovasculature growth, placing microglia-endothelium interactions as a possible key mechanism in BBB formation and regulation.

    “The fact that microglia are present in the embryonic CNS territory prior to endothelial invasion and that they participate in cerebrovasculature growth place the interactions between microglia and CNS endothelium as a possible key mechanism in BBB formation and regulation.”

    From The impact of microglial activation on blood-brain barrier in brain diseases (2014) · cites this paper as Fantin et al., 2010

  • During embryonic stages of CNS vascularization, EC stabilization and fusion are mediated by resident microglial cells.

    “Fantin and collaborators present in vivo data showing that during embryonic stages of CNS vascularization, EC stabilization and fusion are mediated by resident microglial cells (Fantin et al., 2010).”

    From The impact of microglial activation on blood-brain barrier in brain diseases (2014) · cites this paper as Fantin et al., 2010

  • Microglia localize in tight physical association with microvascular structures.

    “they localize in tight physical association with microvascular structures (Fantin et al., 2010; Figure 1)”

    From The impact of microglial activation on blood-brain barrier in brain diseases (2014) · cites this paper as Fantin et al., 2010

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Research works printed but not linked: 2

  1. Kubota Y, Takubo K, Shimizu T, et al. M-CSF inhi- bition selectively targets pathological angiogen- esis and lymphangiogenesis. J Exp Med. 2009; 206(5):1089-1102.
  2. Espinosa-Heidmann DG, Suner IJ, Hernandez EP, Monroy D, Csaky KG, Cousins SW. Macro- phage depletion diminishes lesion size and se- verity in experimental choroidal neovasculariza- tion. Invest Ophthalmol Vis Sci. 2003;44(8):3586- 3592.

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Authors
Fantin, A., Vieira, J. M., Gestri, G., Denti, L., Schwarz, Q., Prykhozhij, S., Peri, F., Wilson, S. W., & Ruhrberg, C.
Affiliations
  • University College London (GB)
  • European Molecular Biology Laboratory (DE)
Corresponding author
  • Fantin, Alessandro
  • Vieira, Joaquim M.
Venue
Blood
Published
2010-08-05
Volume
116
Issue
5
Pages
829-840
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2072172632
Cited by
1,153
References
55
Citations by year
2026: 31 · 2025: 55 · 2024: 112 · 2023: 82 · 2022: 78 · 2021: 91 · 2020: 72 · 2019: 76 · 2018: 86 · 2017: 82 · 2016: 66 · 2015: 52 · 2014: 71 · 2013: 66 · 2012: 64
FWCI
25.81
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Health Sciences › Medicine › Oncology › Lymphatic System and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Zebrafish Biomedical Research Applications
Keywords
tissue macrophages, vascular anastomosis, VEGF signaling, endothelial tip cells, vessel sprouting, angiogenesis, Tie2, neuropilin-1, anti-angiogenic therapy, ischemic diseases, macrophage development
MeSH terms
Proto-Oncogene Protein Spi-1, Animals, Endothelium, Vascular, Female, Macrophages, Male, Proto-Oncogene Proteins, Retinal Vessels, Rhombencephalon, Yolk Sac, Zebrafish, Trans-Activators, Macrophage Colony-Stimulating Factor, Cell Polarity, Mice, Knockout, Neovascularization, Physiologic, Receptor Protein-Tyrosine Kinases, Neuropilin-1, Vascular Endothelial Growth Factor A, Endothelial Cells, Receptor, TIE-2, Mice, Gene Knock-In Techniques

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