Abstract
Single-cell suspensions of primary keratinocytes comprise a heterogeneous cell population that consists of basal cells (stem cells, transient amplifying cells, and post-mitotic basal cells) and suprabasal cells at different stages of differentiation. Quantitative data for the differential expression of epitopes on single cells can be obtained using a flow cytometer. Simultaneous analysis of two intracellular epitopes, keratin 14 and connexin 43, using flow cytometry after keratinocyte isolation, fixation, permeabilization, and fluorescent immunolabeling is described. Three subsets of cells could be distinguished: stem cells (basal cells [keratin 14 positive] that lack connexin 43 expression); suprabasal cells (connexin 43-positive, keratin 14-negative cells); and basal cells (keratin 14 positive) that express connexin 43. The last population of keratinocytes includes both transient amplifying cells and postmitotic basal cells. The scatter characteristics of each cell population are also described.
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References
Beyer, E. C., Paul, D. L., and Goodenough, D. A. (1990) Connexin family of gap junction proteins. J. Membr. Biol. 116, 187–194.
Wilecke, K., Hennemann, H., Dahl, E., Jungbluth, S., and Heynkes, R. (1991) The diversity of connexin genes encoding gap junction proteins. Eur. J. Cell Biol. 56, 1–7.
Kumar, N. M. and Gilula, N. B. (1992) Molecular biology and genetics of gap junction channels. Semin. Cell Biol. 3, 3–16.
Di, W.-L., Rugg, E. L., Leigh, I. M., and Kelsell, D. P. (2001) Multiple epidermal connexins are expressed in different keratinocyte subpopulations including connexin 31. J. Invest. Dermatol. 117, 958–964.
Salomon, D., Masgrau, E., Vischer, S., Ullrich, S., Dupont, E., Sappino, P., et al. (1994) Topography of mammalian connexins in human skin. J. Invest. Dermatol. 103, 240–247.
Richard, G. (2001) Human connexin disorders of the skin. Cell Commun. Adhes. 8, 401–407.
Matic, M., Evans W. H., Brink, P. R., and Simon, M. (2002) Epidermal stem cells do not communicate through gap junctions. J. Invest. Dermatol. 118, 110–116.
Matic, M. and Simon, M. (2003) Label retaining cells (presumptive stem cells) of mice vibrissae do not express gap junction protein connexin 43. J. Invest. Dermatol., Symp. Proc. 8, 92–95.
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© 2005 Humana Press Inc.
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Matic, M., Pullis, C., Golightly, M.G., Simon, S.R. (2005). Analysis of Connexin 43 Expression on Keratinocytes Using Flow Cytometry. In: Turksen, K. (eds) Epidermal Cells. Methods in Molecular Biology™, vol 289. Humana Press. https://doi.org/10.1385/1-59259-830-7:193
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DOI: https://doi.org/10.1385/1-59259-830-7:193
Publisher Name: Humana Press
Print ISBN: 978-1-58829-267-4
Online ISBN: 978-1-59259-830-4
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