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. 1980 Sep;77(9):5282–5286. doi: 10.1073/pnas.77.9.5282

A colchicine-sensitive uptake system in Morris hepatomas.

R Tauber, W Reutter
PMCID: PMC350042  PMID: 6933560

Abstract

The interference of microtubular disruptors with the uptake of amino acids and other low molecular weight substrates has been studied in Morris hepatomas, host liver, and regenerating liver. Colchicine inhibits amino acid transport (alpha-aminoisobutyric acid, L-methionine, and L-leucine) in hepatomas by 59-98% whereas transport in host and regenerating liver is not impeded but increased. In hepatomas, treatment urea, and carbonate. Vinblastine, but not lumicolchicine or cytochalasin B, is an effective inhibitor. The inhibition of uptake is not linked to a decrease of cellular ATP and UTP. The data suggest that the transport of low molecular weight substrates in hepatomas is related to microtubules or other colchicine-binding structures, e.g., of the plasma membrane. This colchicine-sensitive uptake system in hepatomas may be due to the malignant transformation of hepatocytes.

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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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