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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1990 Jul;87(14):5543–5547. doi: 10.1073/pnas.87.14.5543

Inhibition of carcinoma and melanoma cell growth by type 1 transforming growth factor beta is dependent on the presence of polyunsaturated fatty acids.

M J Newman 1
PMCID: PMC54361  PMID: 2371287

Abstract

Improved serum-free media were developed for the anchorage-dependent growth of A549 human lung carcinoma and B16 mouse melanoma cell lines in vitro. Type 1 transforming growth factor beta (TGF-beta 1) inhibited the growth of A549 or B16 cells under serum-free conditions or in the presence of 10% serum by 15-33%. In contrast, in the presence of micrograms/ml concentrations of polyunsaturated fatty acids (PUFAs), picomolar concentrations of TGF-beta 1 irreversibly inhibited the serum-free growth of A549 or B16 cells by 90-100%. The PUFAs alone had little effect on cell growth. Cell growth inhibition by TGF-beta 1 was not potentiated by saturated fatty acids, monounsaturated fatty acids, or prostaglandins. Inhibition of A549 or B16 cell growth by TGF-beta 1 in the presence of PUFAs was almost completely reversed by the antioxidant vitamin E, suggesting a role for lipid peroxidation in this process. Inhibition of A549 or B16 cell growth by TGF-beta 1 in the presence of 5% fetal calf serum was also potentiated by PUFAs and partially reversed by antioxidants. The presence of retinoic acid was required for maximal PUFA-dependent growth inhibition of A549 or B16 cells by TGF-beta 1 under some, but not all, conditions. These results suggest that inhibition of carcinoma and melanoma cell growth by TGF-beta 1 is mediated, in large part, by PUFAs.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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