Application of 12-0-tetradecanoylphorbol-13-acetate (TPA) to mouse skin leads to the induction of ornithine decarboxylase (EC 188.8.131.52) and the accumulation of putrescine. The relevance of these TPA-induced changes to the mechanism of tumor promotion was determined using α-difluoromethylornithine, an irreversible inhibitor of ornithine decarboxylase. α-Difluoromethylornithine applied to the skin of mice or administered in drinking water in conjunction with applications of TPA to 7,12-dimethylbenz[a]anthracene-initiated mouse skin inhibited the formation of mouse skin papillomas by 50 and 90% respectively; TPA-induced ornithine decarboxylase activity and the accumulation of putrescine were almost completely inhibited.
|Number of pages||8|
|Journal||Biochemical and Biophysical Research Communications|
|Publication status||Published - Apr 14 1982|
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology