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Updated: Jul 10, 2026

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
Published on: February 28, 2017
Involvement of notch signaling in wound healing
Srinivasulu Chigurupati1, Thiruma V Arumugam, Tae Gen Son
1Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, Maryland, United States of America.
Abstract:
The Notch signaling pathway is critically involved in cell fate decisions during development of many tissues and organs. In the present study we employed in vivo and cell culture models to elucidate the role of Notch signaling in wound healing. The healing of full-thickness dermal wounds was significantly delayed in Notch antisense transgenic mice and in normal mice treated with gamma-secretase inhibitors that block proteolytic cleavage and activation of Notch. In contrast, mice treated with a Notch ligand Jagged peptide showed significantly enhanced wound healing compared to controls. Activation or inhibition of Notch signaling altered the behaviors of cultured vascular endothelial cells, keratinocytes and fibroblasts in a scratch wound healing model in ways consistent with roles for Notch signaling in wound healing functions all three cell types. These results suggest that Notch signaling plays important roles in wound healing and tissue repair, and that targeting the Notch pathway might provide a novel strategy for treatment of wounds and for modulation of angiogenesis in other pathological conditions.
Insights
Notch signaling inhibition delays wound healing, while its activation enhances it. Targeting this pathway could offer new strategies for wound treatment and tissue repair.
Area of Science:
- Developmental Biology
- Cell Biology
- Tissue Repair
Background:
- The Notch signaling pathway regulates cell fate decisions during tissue development.
- Its role in wound healing and tissue repair remains to be fully elucidated.
Purpose of the Study:
- To investigate the role of Notch signaling in the process of wound healing.
- To determine if modulating Notch signaling can impact dermal wound repair and angiogenesis.
Main Methods:
- Utilized in vivo models (Notch antisense transgenic mice, gamma-secretase inhibitors, Jagged peptide treatment) and cell culture models.
- Assessed full-thickness dermal wound healing and scratch wound assays in cultured cells (endothelial cells, keratinocytes, fibroblasts).
Main Results:
- Inhibition of Notch signaling (via antisense or gamma-secretase inhibitors) significantly delayed wound healing.
- Activation of Notch signaling (via Jagged peptide) significantly enhanced wound healing.
- Modulation of Notch signaling affected the behavior of vascular endothelial cells, keratinocytes, and fibroblasts in wound healing models.
Conclusions:
- Notch signaling plays a crucial role in wound healing and tissue repair.
- Targeting the Notch pathway presents a potential novel therapeutic strategy for wound treatment.
- Modulation of Notch signaling may also be beneficial for controlling angiogenesis in pathological conditions.
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