alexa A myogenic cell line with altered serum requirements for differentiation.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Yaffe D, Saxel O

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Abstract Dfferentiation properties of a cell line, L84, which originated from a non-fusing clone isolated from the myogenic line L8, are described. In nutritional medium supplemented with 10\% serum used routinely with L8 cells, L84 cells continue to proliferate to very high densities and fail to form multinucleated fibres. When grown in medium supplemented with 2\% horse serum of 2\% horse serum plus 0.1\% microng/ml insulin, L84 cells behave very similarly to L8 cells grown in medium supplemented with 10\% horse serum: when the cultures reach confluency, proliferation decreases and cells start to fuse and form a dense network of fibres. Large increases in creatine kinase activity and synthesis of myosin are associated with cell fusion. Under conditions in which L84 cells do not fuse the increase in these synthetic activities is not observed, even after extremely high cell densities are reached. The data show that L84 cells retain the programme for their differentiation into muscle fibres. The difference between L84 and its progenitor line L8 lies in the sensitivity to the environmental conditions which trigger the expression of this programme.
This article was published in Differentiation and referenced in Journal of Stem Cell Research & Therapy

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