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Consistent oncogene methylation changes in epithelial cells chemically transformed in vitro.

Abstract：

:We have examined the restriction digest patterns of CCGG sequences in Kiras, Ha-ras, and c-myc oncogenes in rat tracheal epithelial cells transformed in vitro by 7,12-dimethylbenz(a)anthracene, benzo(a)pyrene/12-O-tetradecanoylphorbol-13-acetate (TPA), or TPA alone. Oncogenes c-myc and Ha-ras in transformed cell lines, compared to normal rat tracheal epithelial cells and untreated primary cultures, had altered Hpa II restriction patterns as demonstrated by hybridizing bands of different molecular weight, or loss of bands. Ki-ras was hypermethylated in all cell derivations, including normal cells. These molecular alterations have not previously been reported for epithelial cells transformed in vitro by polycyclic hydrocarbons and tumor promoters, and suggest common mechanisms of action for agents with diverse molecular targets.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Mass MJ,Schorschinsky NS,Lasley JA,Beeman DK,Austin SJ

doi

10.1016/0006-291x(89)91515-5

subject

Has Abstract

pub_date

1989-10-31 00:00:00

pages

693-9

issue

2

eissn

0006-291X

issn

1090-2104

pii

0006-291X(89)91515-5

journal_volume

164

pub_type

杂志文章

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