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Redox Factor-1 Mediates Inflammatory Response during Tumor Promotion in Skin Epidermal JB6 Cells

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DOI: 10.4236/ojapo.2012.13003    2,859 Downloads   9,794 Views   Citations

ABSTRACT

Recently, redox factor-1 (Ref-1) has received considerable attention as an enzyme for stimulating tumor cell growth. We hypothesized that Ref-1 is upregulated during the early stage of tumorigenesis. Utilizing both tumor promotion sensitive P+ and promotion resistant P? mouse skin epidermal JB6 cells, we found that Ref-1 expression was only induced in tumor promotion sensitive P+ cells following TPA treatment. Consistent with that, Ref-1 knockdown suppressed skin cell transformation. Interestingly, Ref-1 knockdown suppressed nuclear translocation of NF-kappaB subunit p65, and inhibited production of proinflammatory cytokines. These results suggest Ref-1 may promote early tumorigenesis and serve as a target for chemoprevention.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Robbins, W. Li, K. Humphrey and Y. Zhao, "Redox Factor-1 Mediates Inflammatory Response during Tumor Promotion in Skin Epidermal JB6 Cells," Open Journal of Apoptosis, Vol. 1 No. 3, 2012, pp. 19-24. doi: 10.4236/ojapo.2012.13003.

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