Abstract
The effects of two adhesion substrates (serum and laminin) and time in culture on the expression of genes encoding myosin heavy chain (MHC) isoforms and α-skeletal actin were analysed in myocytes isolated from adult rat heart and maintained in serum-free culture. Relative messenger ribonucleic acid (mRNA) abundances were quantitated by dot-blot analysis. Gene expression was not influenced by the substrate used. Time in culture induced a decrease in total mRNA abundance and an up-regulation of β-MHC and α-skeletal actin genes. It is proposed that atrophy of adult myocytes is associated with a pattern of gene expression similar to the fetal program.
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Dubus, I., Rappaport, L., Barrieux, A. et al. Contractile protein gene expression in serum-free cultured adult rat cardiac myocytes. Pflügers Arch. 423, 455–461 (1993). https://doi.org/10.1007/BF00374941
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DOI: https://doi.org/10.1007/BF00374941