Phenotypical stability of a human hepatoma cell line, HuH-7, in long-term culture with chemically defined medium - PubMed (original) (raw)
- PMID: 6203805
Phenotypical stability of a human hepatoma cell line, HuH-7, in long-term culture with chemically defined medium
H Nakabayashi et al. Gan. 1984 Feb.
Abstract
A chemically defined medium containing selenium was further improved, and the improved medium showed excellent ability to support growth and colony formation of a human hepatoma cell line, HuH-7. The improved defined medium (designated as IS-RPMI) contained small amounts of unsaturated fatty acids, inorganic trace elements including selenium, and HEPES buffer. Many of these additions exert only a small individual effect on the growth of cells, but their cumulative effects were substantial. HuH-7 cells replicated continuously with a doubling time of 47-51 hr in IS-RPMI. A conditioned medium from a semiconfluent population increased the colony-forming ability of HuH-7 cells in IS-RPMI. The addition of insulin to the medium gave good colony growth, thus duplicating the effect of the conditioned medium. Although some alterations of morphological and growth characteristics of HuH-7 cells were observed, the differentiated liver functions, as revealed by production of plasma proteins including high levels of alpha 1-fetoprotein, were maintained for a period of more than 3 years and through 70 passages under the above culture conditions.
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