Premium
Development of a clonal myogenic cell line with unusual biochemical properties
Author(s) -
Brandt Bruce L.,
Kimes Brian W.,
Klier F. George
Publication year - 1976
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.1040880302
Subject(s) - multinucleate , biology , microbiology and biotechnology , myogenesis , microtubule , cell culture , microfilament , myocyte , biophysics , cytoskeleton , biochemistry , cell , genetics
The morphological, ultrastructural, biochemical and electro‐physiological properties of B104‐F, a clonal cell line derived from a nitrosoethylurea‐induced neoplasm in a rat, were studied as a function of the growth phase of the culture. Cells in exponentially growing cultures are mononucleate and produce action potentials when stimulated electrically. Stationary phase cultures contain three types of cells: cells of the first type are mononucleate and have long processes containing microfilaments and many parallel microtubules; cells of the second type are mononucleate but contain no microtubules and few microfilaments; and cells of the third type have ultrastructural features typical of multinucleate, striated myotubes. Multinucleate cells generate action potentials with both sodium and calcium components and are depolarized by acetyl‐choline. The acetylcholine response is blocked by d‐tubocurarine. The specific activity of creatine phosphokinase is nine times higher in stationary phase cultures than in exponentially growing ones while the myokinase specific activity is unchanged. The gamma‐aminobutyric acid content of the cells is 3.5‐ to 26‐fold higher in stationary phase than in exponentially growing cultures, depending on the degree of fusion of the culture. The properties of B104‐F are discussed in relation to the properties of developing skeletal muscle and of central nervous system cell lines.