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Nature. 2005 Sep 15;437(7057):417-21.

WNT7b mediates macrophage-induced programmed cell death in patterning of the vasculature.

Author information

  • 1Division of Developmental Biology, The Children's Hospital Research Foundation and Department of Ophthalmology, University of Cincinnati, Cincinnati, Ohio 45229, USA.

Abstract

Macrophages have a critical role in inflammatory and immune responses through their ability to recognize and engulf apoptotic cells. Here we show that macrophages initiate a cell-death programme in target cells by activating the canonical WNT pathway. We show in mice that macrophage WNT7b is a short-range paracrine signal required for WNT-pathway responses and programmed cell death in the vascular endothelial cells of the temporary hyaloid vessels of the developing eye. These findings indicate that macrophages can use WNT ligands to influence cell-fate decisions--including cell death--in adjacent cells, and raise the possibility that they do so in many different cellular contexts.

PMID:
16163358
[PubMed - indexed for MEDLINE]
PMCID:
PMC4259146
Free PMC Article
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