Title : The mechanism of retinoic acid radiosensitization is independent of AP-1 repression in a cervical carcinoma cell line.

Pub. Date : 1999 May

PMID : 10329043






4 Functional Relationships(s)
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1 RESULTS: The CCA reporter line exhibited a radiation dose-responsive induction of AP-1 activity that was decreased by 5 microM 9cRA and increased by 50 ng/ml TPA. Tetradecanoylphorbol Acetate JunB proto-oncogene, AP-1 transcription factor subunit Homo sapiens
2 Simultaneous treatment with TPA and 9cRA prevented 9cRA repression of AP-1 and resulted in AP-1 activity above basal level. Tetradecanoylphorbol Acetate JunB proto-oncogene, AP-1 transcription factor subunit Homo sapiens
3 Simultaneous treatment with TPA and 9cRA prevented 9cRA repression of AP-1 and resulted in AP-1 activity above basal level. Tetradecanoylphorbol Acetate JunB proto-oncogene, AP-1 transcription factor subunit Homo sapiens
4 CONCLUSION: Although TPA prevented AP-1 repression by 9cRA, it did not prevent radiosensitization in CCA cultures, therefore the mechanism of radiosensitization of CCA by 9cRA is independent of AP-1 repression. Tetradecanoylphorbol Acetate JunB proto-oncogene, AP-1 transcription factor subunit Homo sapiens