Abstract:
:Constitutive and benzo[a]pyrene (B[a]P) inducible expression of CYP1A1 and CYP1A2 in prostate cancer and normal prostate epithelial cells were examined by immunoblotting. Androgen independent prostate cancer cell lines DU145 and PC3 have constitutive expression of CYP1A and CYP1A1 and CYP1A2, respectively. Four micromolar B[a]P did not appear to induce CYP1A1 or CYP1A2 expression in DU145 or PC3 cells. The androgen dependent prostate cancer cell line, LnCap, also has constitutive expression of CYP1A1 and CYP1A2. However, both CYP1A1 and CYP1A2 are induced by treatment of LnCap cells with 4 microM B[a]P. Untreated normal prostate and primary prostate tumor cells have no detectable CYP1A1 expression. Treatment with 4 microM B[a]P induced CYP1A1 expression in both normal and primary tumor prostate cells. Constitutive CYP1A2 expression was detected in normal prostate cells with little or no induction by exposure to 4 microM B[a]P. Primary prostate tumor cells did not show constitutive expression of CYP1A2. However, CYP1A2 was induced by 4 microM B[a]P in primary prostate tumor cells. These observations indicate that hormonal and cancer specific factors affect the expression and induction of the phase I metabolic enzymes, CYP1A1 and CYP1A2 in prostate cells. These observations may be related to the potential smoking-linked higher risk of prostate cancer development and morbidity of prostate cancer patients who smoke.
journal_name
J Cell Biochemjournal_title
Journal of cellular biochemistryauthors
Sterling KM Jr,Cutroneo KRdoi
10.1002/jcb.10753subject
Has Abstractpub_date
2004-02-01 00:00:00pages
423-9issue
2eissn
0730-2312issn
1097-4644journal_volume
91pub_type
杂志文章abstract:BACKGROUND:Long noncoding RNA (lncRNA) is emerging as a vital regulator in various cancers. Recently, it was found that lncRNA colorectal neoplasia differentially expressed (CRNDE) plays an oncogenic role, promoting cell proliferation and migration in hepatocellular carcinoma (HCC). However, the underlying regulatory m...
journal_title:Journal of cellular biochemistry
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更新日期:2013-06-01 00:00:00
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更新日期:2007-01-01 00:00:00
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更新日期:2016-01-01 00:00:00
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