Transgenic mouse model expressing tdTomato under involucrin promoter as a tool for analysis of epidermal differentiation and wound healing
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Cell Differentiation * MeSH
- Red Fluorescent Protein MeSH
- Dermatitis metabolism physiopathology MeSH
- Epidermis metabolism physiopathology MeSH
- Epithelium metabolism physiopathology MeSH
- Microscopy, Fluorescence MeSH
- Gene Targeting methods MeSH
- Wound Healing * MeSH
- Immunohistochemistry MeSH
- Introns MeSH
- Tongue metabolism physiopathology MeSH
- Luminescent Proteins metabolism MeSH
- Mice, Inbred C57BL MeSH
- Mice, Transgenic MeSH
- Mice MeSH
- Promoter Regions, Genetic * MeSH
- Protein Precursors genetics MeSH
- Gene Expression Regulation MeSH
- Genes, Reporter MeSH
- Solanum lycopersicum genetics MeSH
- Transgenes MeSH
- Animals MeSH
- Check Tag
- Mice MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- involucrin MeSH Browser
- Luminescent Proteins MeSH
- Protein Precursors MeSH
The epidermis is a stratified tissue composed of different keratinocyte layers that create a barrier protecting the body from external influences, pathogens, and dehydration. The barrier function is mainly achieved by its outermost layer, the stratum corneum. To create a mouse model to study pathophysiological processes in the outermost layers of the epidermis in vivo and in vitro we prepared a construct containing red fluorescent td-Tomato reporter sequence under the control of involucrin promoter and its first intron. Transgenic mice were generated by pronuclear injection and the expression and regulation of the transgene was determined by in vivo imaging and fluorescent microscopy. The promoter targeted the transgene efficiently and specifically into the outermost epidermal layers although weak expression was also found in epithelia of tongue and bladder. The regulation of expression in the epidermis, i.e. fluorescence intensity of the reporter, could be easily followed during wound healing and dermatitis. Thus, these transgenic mice carrying the tdTomato reporter could be used as a valuable tool to study impact of various genes dysregulating the epidermal barrier and to follow effects of therapeutic agents for treatment of skin diseases in vivo.
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