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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Comparison of propylene oxide and epichlorohydrin effects in two transformation tests (C3H/10T1/2 and SHE cells).

The neoplastic cell transformation induced by propylene oxide (PO) and epichlorohydrin (ECH) was studied in two in vitro assays, mouse embryo fibroblasts (C3H/10T1/2) and Syrian hamster embryo (SHE) cells. In C3H/10T1/2 cells treated with PO (2.5-10 mM), the transformation frequencies were enhanced about 2-4 times in the presence of 12-O-tetradecanoylphorbol-13-acetate (TPA), compared with the transformation frequencies in the absence of TPA. In SHE cells, an even higher increase (about 6-9 times) was reached at concentrations of 2.5-20 mM. The presence of TPA strongly influenced the ability of ECH to induce the morphological transformation at low-moderate concentrations (0.25-1 mM). At the highest concentrations applied, 1 mM in C3H/10T1/2 cells and 0.5 mM in SHE cells, 41- and 4-fold increases, respectively, were observed. In C3H/10T1/2 cells, the rad-equivalence (rad/mMh) of PO and ECH in the presence of TPA was calculated to be 36 +/- 8 and 296 +/- 65 (mean +/- S.E.), respectively.[1]

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