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5-Fluorouracil prevents lipopolysaccharide-induced nitric oxide production in RAW 264.7 macrophage cells by inhibiting Akt-dependent nuclear factor-κB activation

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Abstract

The effect of 5-fluorouracil (5-FU) on the production of nitric oxide (NO) in macrophages was examined by using lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. 5-FU at non-toxic concentrations significantly inhibited NO production in LPS-stimulated RAW 264.7 cells. The inhibition by 5-FU was mediated by attenuated expression of an inducible NO synthase protein and mRNA. 5-FU inhibited the activation of nuclear factor (NF)-κB and the subsequent nuclear translocation. Furthermore, 5-FU inhibited the phosphorylation of Akt, an upstream molecule of NF-κB signaling. 5-FU did not affect a series of mitogen-activated protein kinases. Therefore, 5-FU was suggested to inhibit the LPS-induced NO production in activated macrophages through preventing Akt-dependent NF-κB activation.

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Acknowledgments

This work was supported in part by a Grant-in-Aid for Scientific Research (KAKENHI 14570247). We are grateful to K. Takahashi and A. Morikawa for the technical assistance.

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Correspondence to Takashi Yokochi.

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Islam, S., Hassan, F., Tumurkhuu, G. et al. 5-Fluorouracil prevents lipopolysaccharide-induced nitric oxide production in RAW 264.7 macrophage cells by inhibiting Akt-dependent nuclear factor-κB activation. Cancer Chemother Pharmacol 59, 227–233 (2007). https://doi.org/10.1007/s00280-006-0261-2

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  • DOI: https://doi.org/10.1007/s00280-006-0261-2

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