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  • Title: Inhibition of ultraviolet C irradiation-induced AP-1 activity by aspirin is through inhibition of JNKs but not erks or P38 MAP kinase.
    Author: Ma WY, Huang C, Dong Z.
    Journal: Int J Oncol; 1998 Mar; 12(3):565-8. PubMed ID: 9472093.
    Abstract:
    The exposure of mammalian cells to ultraviolet (UV) irradiation leads to the activation of transcription factors, such as AP-1 and NFkB. We demonstrate that aspirin, a promising cancer chemopreventative agent, inhibited UVC-induced AP-1 activity in JB6 cells. In JB6 cells, UVC stimulated Erks, JNKs and P38 kinase activities; aspirin only inhibited activation of JNKs, but not the other MAP kinases. Since the transcription factor AP-1 is important for the process of tumor promotion, the inhibitory effect of aspirin on AP-1 activation suggests that it can be used as a chemopreventative agent against skin cancer.
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