Abstract:
:Cytochrome P450 1A1 (CYP1A1) is a member of the cytochrome p450 enzyme family, which is involved in the metabolisms of carcinogenic metabolites, such as benzo(a)pyrene. In this study, we identified miR-892a as a negative regulator of CYP1A1 expression. Luciferase assays revealed a sequence in the 3'-untranslated region of CYP1A1 that displayed a perfect match with miR-892a, and revealed that this sequence was a specific miR-892a target site. The overexpression of miR‑892a inhibited the expression of the CYP1A1 protein, and the miR‑892a antagonist increased CYP1A1 expression. Of note, benzo(a)pyrene, a major inducer of CYP1A1 transcription, decreased the expression of miR-892a. Moreover, the miR-892a-induced CYP1A1 repression inhibited the benzo(a)pyrene-mediated decrease in cell viability. These data provide insight into the CYP1A1 regulatory network.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Choi YM,An S,Lee EM,Kim K,Choi SJ,Kim JS,Jang HH,An IS,Bae Sdoi
10.3892/ijo.2012.1418subject
Has Abstractpub_date
2012-07-01 00:00:00pages
331-6issue
1eissn
1019-6439issn
1791-2423journal_volume
41pub_type
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