Ayako Nakamura-Ishizu
   Department   School of Medicine, School of Medicine
   Position   Professor and Division head
Article types Original article
Language English
Peer review Peer reviewed
Title Bone marrow-derived cells serve as proangiogenic macrophages but not endothelial cells in wound healing.
Journal Formal name:Blood
ISSN code:15280020/00064971
Domestic / ForeginForegin
Volume, Issue, Page 117(19),pp.5264-72
Author and coauthor Okuno Yuji, Nakamura-Ishizu Ayako, Kishi Kazuo, Suda Toshio, Kubota Yoshiaki
Publication date 2011/05
Summary Bone marrow-derived cells (BMDCs) contribute to postnatal vascular growth by differentiating into endothelial cells or secreting angiogenic factors. However, the extent of their endothelial differentiation highly varies according to the angiogenic models used. Wound healing is an intricate process in which the skin repairs itself after injury. As a process also observed in cancer progression, neoangiogenesis into wound tissues is profoundly involved in this healing process, suggesting the contribution of BMDCs. However, the extent of the differentiation of BMDCs to endothelial cells in wound healing is unclear. In this study, using the green fluorescent protein-bone marrow chim-eric experiment and high resolution confocal microscopy at a single cell level, we observed no endothelial differentiation of BMDCs in 2 acute wound healing models (dorsal excisional wound and ear punch) and a chronic wound healing model (decubitus ulcer). Instead, a major proportion of BMDCs were macrophages. Indeed, colony-stimulating factor 1 (CSF-1) inhibition depleted approximately 80% of the BMDCs at the wound healing site. CSF-1-mutant (CSF-1(op/op)) mice showed significantly reduced neoangiogenesis into the wound site, supporting the substantial role of BMDCs as macrophages. Our data show that the proangiogenic effects of macrophages, but not the endothelial differentiation, are the major contribution of BMDCs in wound healing.
DOI 10.1182/blood-2011-01-330720
PMID 21411758