Generation of Self-assembled Vascularized Human Skin Equivalents
| Autor: | Martina M Sanchez, Joshua T. Morgan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cell type
General Chemical Engineering Fluorescent Antibody Technique Neovascularization Physiologic Human skin Stain Permeability General Biochemistry Genetics and Molecular Biology law.invention Imaging Three-Dimensional Suspensions Tissue engineering Confocal microscopy law medicine Animals Humans Skin equivalent Fibroblast Cells Cultured Skin Skin Artificial Staining and Labeling Tissue Engineering integumentary system General Immunology and Microbiology Chemistry General Neuroscience Optical Imaging Dermis Rats medicine.anatomical_structure Collagen Epidermis Wound healing Biomarkers Biomedical engineering |
| Zdroj: | Journal of Visualized Experiments. |
| ISSN: | 1940-087X |
| Popis: | Human skin equivalents (HSEs) are tissue engineered constructs that model epidermal and dermal components of human skin. These models have been used to study skin development, wound healing, and grafting techniques. Many HSEs continue to lack vasculature and are additionally analyzed through post-culture histological sectioning which limits volumetric assessment of the structure. Presented here is a straightforward protocol utilizing accessible materials to generate vascularized human skin equivalents (VHSE); further described are volumetric imaging and quantification techniques of these constructs. Briefly, VHSEs are constructed in 12 well culture inserts in which dermal and epidermal cells are seeded into rat tail collagen type I gel. The dermal compartment is made up of fibroblast and endothelial cells dispersed throughout collagen gel. The epidermal compartment is made up of keratinocytes (skin epithelial cells) that differentiate at the air-liquid interface. Importantly, these methods are customizable based on needs of the researcher, with results demonstrating VHSE generation with two different fibroblast cell types: human dermal fibroblasts (hDF) and human lung fibroblasts (IMR90s). VHSEs were developed, imaged through confocal microscopy, and volumetrically analyzed using computational software at 4- and 8-week timepoints. An optimized process to fix, stain, image, and clear VHSEs for volumetric examination is described. This comprehensive model, imaging, and analysis techniques are readily customizable to the specific research needs of individual labs with or without prior HSE experience. |
| Databáze: | OpenAIRE |
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