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Canonical Wnt signaling regulates organ-specific assembly and differentiation of CNS vasculature.

Science (New York, N.Y.) | Nov 21, 2008

http://www.ncbi.nlm.nih.gov/pubmed/19023080

Every organ depends on blood vessels for oxygen and nutrients, but the vasculature associated with individual organs can be structurally and molecularly diverse. The central nervous system (CNS) vasculature consists of a tightly sealed endothelium that forms the blood-brain barrier, whereas blood vessels of other organs are more porous. Wnt7a and Wnt7b encode two Wnt ligands produced by the neuroepithelium of the developing CNS coincident with vascular invasion. Using genetic mouse models, we found that these ligands directly target the vascular endothelium and that the CNS uses the canonical Wnt signaling pathway to promote formation and CNS-specific differentiation of the organ's vasculature.

Pubmed ID: 19023080 RIS Download

Mesh terms: Animals | Blood-Brain Barrier | Central Nervous System | Embryonic Induction | Mice | Mutation | Neovascularization, Physiologic | Neuroepithelial Cells | Proto-Oncogene Proteins | Signal Transduction | Wnt Proteins | beta Catenin

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Associated grants

  • Agency: NIDDK NIH HHS, Id: DK054364
  • Agency: NHLBI NIH HHS, Id: HL076393

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