Effect of keratinocytes culture on the construction of fibrin-based human skin equivalents
Main Article Content
Abstract
Human skin equivalents are in vitro model constructed with human skin cells. The function and morphology of primary cells are particularly dependent on the cell isolation and culturing method, crucial in achieving reliable skin tissues. In this study, we show preliminary findings on the effect of the source of keratinocytes on the generation of 3D skin models. Two approaches were used to obtain keratinocytes: explant culture and a feeder layer of mouse fibroblasts. Skin samples were taken from three patients and processed by both methods. For the construction of HSEs, explant culture and feeder layer-derived keratinocytes were seeded on top of a fibroblasts-populated fibrin matrix. The histology and expression of epidermal markers were assessed by hematoxylin-eosin staining and immunohistochemistry, respectively. The integrity of the epidermal barrier was examined by measuring the transepithelial electrical resistance. To a greater or lesser extent, both methods produced HSEs where keratinocytes were able to stratify and express epidermal differentiation markers. The integrity of tight junctions (protein complexes that form the epidermal barrier) was enhanced in models composed of passage 1 cells. Feeder layer-derived keratinocytes generated HSEs with a healthier, thicker, and more properly stratified epidermis, improving the histological features, when compared to explant culture-derived models.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
Bikle, D. D., Xie, Z., and Tu, C. L. (2012). Calcium regulation of keratinocyte differentiation. Expert Review of Endocrinology & Metabolism, 7(4), 461-472.
Borowiec, A. S., Delcourt, P., Dewailly, E., and Bidaux, G. (2013). Optimal differentiation of in vitro keratinocytes requires multifactorial external control. PLOS One, 8(10), e77507.
Dragúňová, J., Kabát, P., and Koller. J. (2013). Skin explant cultures as a source of keratinocytes for cultivation. Cell and Tissue Banking, 14, 317-324.
Elsholz, F., Harteneck, C., Muller, W., and Friedland, K. (2014). Calcium - a central regulator of keratinocyte differentiation in health and disease. European Journal of Dermatology, 24(6), 650-661.
Geuijen, C. A. W., and Sonnenberg, A. (2002). Dynamics of the alpha6beta4 integrin in keratinocytes. Molecular Biology of the Cell, 13(11), 3845-3858.
Gragnani, A., Sobral, C. S., and Ferreira, L. M. (2007). Thermolysin in human cultured keratinocyte isolation. Brazilian Journal of Biology, 67(1), 105-109.
Gray, T. E., Thomassen, D. G., Mass, M. J., and Barrett. J. C. (1983). Quantitation of cell proliferation, colony formation, and carcinogen induced cytotoxicity of rat tracheal epithelial cells grown in culture on 3T3 feeder layers. In Vitro, 19(7), 559-570.
Green, H. (2008). The birth of therapy with cultured cells. BioEssays, 30(9), 897-903.
Llames, S. G., Del Rio, M., Larcher, F., García, E., García, M., José Escamez, M., Jorcano, J. L., Holguín, P., and Meana, A. (2004). Human plasma as a dermal scaffold for the generation of a completely autologous bioengineered skin. Transplantation, 77(3), 350-355.
Morales, M., Pérez, D., Correa, L., and Restrepo, L. (2016). Evaluation of fibrin-based dermal-epidermal organotypic cultures for in vitro skin corrosion and irritation testing of chemicals according to OECD TG 431 and 439. Toxicology in Vitro, 36, 89-96.
OECD. (2016). Test No. 431: In Vitro Skin Corrosion: Recon-structed Human Epidermis (RHE) Test Method. André Pascal: OECD Publishing, pp. 1-26.
OECD. (2015). Test No. 439: In Vitro Skin Irritation: Recon-structed Human Epidermis Test Method. André Pascal: OECD Publishing, pp. 1-28.
Orazizadeh, M., Hashemitabar, M., Bahramzadeh, S., Dehbashi, F. N., and Saremy, S. (2015). Comparison of the enzymatic and explant methods for the culture of keratinocytes isolated from human foreskin. Biomedical Reports, 3(3), 304-308.
Pillai, S., Bikle, D. D., Mancianti, M. L., Cline, P., and Hincenbergs, M. (1990). Calcium regulation of growth and differentiation of normal human keratinocytes: modulation of differentiation competence by stages of growth and extracellular calcium. Journal of Cellular Physiology, 143(2), 294-302.
Rheinwald, J. G., and Green, H. (1975). Serial cultivation of strains of human epidermal keratinocytes: The formation keratinizing colonies from single cells is. Cell, 6(3), 331-343.
Rugg, E. L., McLean, W. H., Lane, E. B., Pitera, R., McMillan, J. R., Dopping-Hepenstal, P. J., Navsaria, H. A., Leigh, I. M., and Eady, R. A. (1994). A functional knockout of human keratin 14. Genes & Development, 8(21), 2563-2573.
Srinivasan, B., Kolli, A. R., Esch, M. B., Abaci, H. E., Shuler, M. L., and Hickman, J. J. (2015). TEER measurement techniques for in vitro barrier model systems. SLAS Technology, 20(2), 107-126.
Vinardell, M. P., and Mitjans, M. (2008). Alternative methods for eye and skin irritation tests: An overview. Journal of Pharmaceutical Sciences, 97(1), 46-59.
Zhang, Z., and Michniak-Kohn, B. B. (2012). Tissue engineered human skin equivalents. Pharmaceutics, 4(1), 26-41.