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Development of heart cells in culture: Studies using an affinity purified antibody to a myosin light chain
Author(s) -
Klein Irwin,
Daood Monica,
Whiteside Theresa
Publication year - 1985
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.1041240109
Subject(s) - myosin , myocyte , myofibril , myosin light chain kinase , immunofluorescence , contractility , antibody , biology , cardiac myocyte , myh7 , microbiology and biotechnology , biochemistry , endocrinology , immunology
Abstract 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 (MLC 1 ), 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 the antibody a predictable pattern of myofibrillar structure is observed to develop over 72h. 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 in the same in both spontaneously beating and in non‐contracting cells.