Add time:08/10/2019         Source:sciencedirect.com

The effect of the antineoplastic drug Sulofenur (cas 110311-27-8) on the induction of the immediate-early genes (IEG) c-fos and c-jun and the stress gene hsp70 was compared in the rat kidney epithelial-like cell line NRK-52E and a derivative H-ras-transfected (H/1.2NRK-52E) cell line. Fold induction for each gene after sulofenur (500 μM) treatment was greater in H/1.2NRK-52E. The maximum increases for NRK-2E and H/1.2NRK-52E were as follows: c-fos, ~10-fold and ~18-fold; c-jun, ~2.5-fold and ~3.6-fold; hsp70, ~13-fold and ~30-fold. In cells loaded with EGTA/AM or treated in low or no Ca2+ HBSS, c-fos induction was reduced similarly in both cell types. However, inhibition of protein kinases with staurosporin and calphostin C reduced c-fos by 80% in NRK-52E but by only 10–20% in H/1.2NRK-52E. These results indicate that sulofenur-induced IEG elevation is Ca2+-dependent and that the requirement for protein kinase C activation is bypassed in H-ras-transfected cells,

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