Title |
Notch Regulates Macrophage-Mediated Inflammation in Diabetic Wound Healing
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Published in |
Frontiers in immunology, June 2017
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DOI | 10.3389/fimmu.2017.00635 |
Pubmed ID | |
Authors |
Andrew S. Kimball, Amrita D. Joshi, Anna E. Boniakowski, Matthew Schaller, Jooho Chung, Ronald Allen, Jennifer Bermick, William F. Carson, Peter K. Henke, Ivan Maillard, Steve L. Kunkel, Katherine A. Gallagher |
Abstract |
Macrophages are essential immune cells necessary for regulated inflammation during wound healing. Recent studies have identified that Notch plays a role in macrophage-mediated inflammation. Thus, we investigated the role of Notch signaling on wound macrophage phenotype and function during normal and diabetic wound healing. We found that Notch receptor and ligand expression are dynamic in wound macrophages during normal healing. Mice with a myeloid-specific Notch signaling defect (DNMAML(floxed)Lyz2(Cre+) ) demonstrated delayed early healing (days 1-3) and wound macrophages had decreased inflammatory gene expression. In our physiologic murine model of type 2 diabetes (T2D), Notch receptor expression was significantly increased in wound macrophages on day 6, following the initial inflammatory phase of wound healing, corresponding to increased inflammatory cytokine expression. This increase in Notch1 and Notch2 was also observed in human monocytes from patients with T2D. Further, in prediabetic mice with a genetic Notch signaling defect (DNMAML(floxed)Lyz2(Cre+) on a high-fat diet), improved wound healing was seen at late time points (days 6-7). These findings suggest that Notch is critical for the early inflammatory phase of wound healing and directs production of macrophage-dependent inflammatory mediators. These results identify that canonical Notch signaling is important in directing macrophage function in wound repair and define a translational target for the treatment of non-healing diabetic wounds. |
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Geographical breakdown
Country | Count | As % |
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Switzerland | 1 | 33% |
Unknown | 2 | 67% |
Demographic breakdown
Type | Count | As % |
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Scientists | 2 | 67% |
Members of the public | 1 | 33% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 76 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 18 | 24% |
Researcher | 13 | 17% |
Student > Bachelor | 10 | 13% |
Student > Master | 7 | 9% |
Professor > Associate Professor | 4 | 5% |
Other | 8 | 11% |
Unknown | 16 | 21% |
Readers by discipline | Count | As % |
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Medicine and Dentistry | 11 | 14% |
Immunology and Microbiology | 11 | 14% |
Biochemistry, Genetics and Molecular Biology | 9 | 12% |
Agricultural and Biological Sciences | 6 | 8% |
Pharmacology, Toxicology and Pharmaceutical Science | 6 | 8% |
Other | 11 | 14% |
Unknown | 22 | 29% |