MedStar Authors catalog › Details for: Utility of a human-mouse xenograft model and in vivo near-infrared fluorescent imaging for studying wound healing.
Utility of a human-mouse xenograft model and in vivo near-infrared fluorescent imaging for studying wound healing. Journal: International wound journal.Published: 2015ISSN: 1742-4801.UI/PMID: 24373153.Subject(s): Animals | Cyclooxygenase 2/me [Metabolism] | Disease Models, Animal | Female | Fluorescent Dyes | Humans | Mice | Mice, Nude | *Skin Transplantation | Spectroscopy, Near-Infrared | *Transplantation, Heterologous | *Wound Healing/ph [Physiology] | Wounds, Penetrating/me [Metabolism] | Wounds, Penetrating/pa [Pathology] | *Wounds, Penetrating/th [Therapy]Institution(s): MedStar Health Research InstituteActivity type: Journal Article.Medline article type(s): Journal Article | Research Support, N.I.H., ExtramuralDigital Object Identifier: http://dx.doi.org/10.1111/iwj.12205 (Click here) Abbreviated citation: Int Wound J. 12(6):699-705, 2015 Dec.Abstract: To study the complex cellular interactions involved in wound healing, it is essential to have an animal model that adequately mimics the human wound microenvironment. Currently available murine models are limited because wound contraction introduces bias into wound surface area measurements. The purpose of this study was to demonstrate utility of a human-mouse xenograft model for studying human wound healing. Normal human skin was harvested from elective abdominoplasty surgery, xenografted onto athymic nude (nu/nu) mice, and allowed to engraft for 3 months. The graft was then wounded using a 2-mm punch biopsy. Wounds were harvested on sequential days to allow tissue-based markers of wound healing to be followed sequentially. On the day of wound harvest, mice were injected with XenoLight RediJect cyclooxygenase-2 (COX-2) probe and imaged according to package instructions. Immunohistochemistry confirms that this human-mouse xenograft model is effective for studying human wound healing in vivo. Additionally, in vivo fluorescent imaging for inducible COX-2 demonstrated upregulation from baseline to day 4 (P = 0.03) with return to baseline levels by day 10, paralleling the reepithelialisation of the wound. This human-mouse xenograft model, combined with in vivo fluorescent imaging provides a useful mechanism for studying molecular pathways of human wound healing. Copyright © 2013 The Authors. International Wound Journal © 2013 Medicalhelplines.com Inc and John Wiley & Sons Ltd.