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An affinity-purified antibody to myosin light chain 1 revealed a predictable, highly organized pattern of myofibrillar structure development over 72 hours in cultured neonatal rat heart cells.
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An antibody to myosin light chain 1 demonstrates that cultured neonatal rat myocytes develop a highly organized, cross-striated myosin cytoskeleton over 72 hours independent of contractile activity.
Cultured neonatal rat heart cells can be used to study the factors that regulate cardiac contractility and myocyte development in vitro. An antibody to the 26,000 dalton light chain of myosin (MLC1), has been produced and purified on a Sepharose 4B affinity column prepared with rat heart myosin. When primary cultures of myocytes are studied by indirect immunofluorescence using this antibody a predictable pattern of myofibrillar structure is observed to develop over 72 h. This myosin cytoskeleton is highly organized and the myosin fibrils exhibit cross striations. The antibody does not stain non-muscle heart cells and there is no evidence for myocyte division in culture. The qualitative immunofluorescent pattern of myosin organization is the same in both spontaneously beating and in non-contracting cells.
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Klein et al. (1985) studied Cultured neonatal rat heart cells. Antibody to the 26,000 dalton light chain of myosin (MLC1) was evaluated on Myofibrillar structure development and myosin organization. An affinity-purified antibody to myosin light chain 1 revealed a predictable, highly organized pattern of myofibrillar structure development over 72 hours in cultured neonatal rat heart cells.
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