Expression of protein kinase C isoforms in smooth muscle cells in various states of differentiation

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Abstract

We analysed the expression of protein kinase C (PKC) isoforms in smooth muscle cells (SMC) in various states of differentiation, using Western blots and thermocycle amplification of mRNA. SMC isolated from intact tissues express three isoforms of PKC, namely α, δ, and ζ- Following cell culture, SMC additionally express mRNA for PKC-ε{lunate}, but significant amounts of the corresponding protein were not detected. Transformed SMC, such as the cell line DDT, MF-2, express both mRNA and protein for PKC-ε{lunate}, lack the δ isoenyzme, whilst maintaining the expression of the α and ζ isoforms. Thus PKC-δ and ε{lunate} isoenzyme expression appears to vary with the state of differentiation of these cells, with PKC-ε{lunate} expression increasing as the cells become proliferative. © 1994.

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Assender, J. W., Kontny, E., & Fredholm, B. B. (1994). Expression of protein kinase C isoforms in smooth muscle cells in various states of differentiation. FEBS Letters, 342(1), 76–80. https://doi.org/10.1016/0014-5793(94)80588-1

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