Development of a new method for the preparation of an acellular allodermis, quality control and cytotoxicity testing

Cell and Tissue Banking - Tập 18 - Trang 153-166 - 2017
J. Dragúňová1, P. Kabát2,3, P. Babál4, H. Mrázová4, M. Boháč5, Ľ. Krajčíová6, J. Koller1
1Department of Burns and Reconstructive Surgery, Faculty of Medicine, Comenius University Bratislava, Bratislava, Slovak Republic
2Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovak Republic
3Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic
4Institute of Pathological Anatomy, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic
5Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic
6Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic

Tóm tắt

Demand for use of acellular allodermis is high but commercially appropriate products are not used routinely because of very high price and limited availability. These facts did motivate us to prepare acellular allodermis using a new, simple and less expensive method. We have developed a original method for preparation of acellular allogeneic dermis based on action of a proteolytic enzyme in combination with distilled water. Hypotonic environment in comparison with SDS or Triton ansure no toxicity of the final product. Trials for determination of optimal trypsin concentrations, temperature and time of action were performed. According to our results, the use of 2.5% trypsin/EDTA solution overnight at +4 °C was proving to be optimal. The histology confirmed absence of cells in the prepared dermis. No toxicity of final acellular dermis was confirmed by three independent tests (agar diffusion test contact cytotoxicity test and grow curve). The prepared acellular dermis seems to be suitable not only for direct clinical use, but it can be used as a scaffold for cell cultivation as well.

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