摘要:
Pifithrin-alpha, a known p53 inactivator, inhibits p53-dependant mitochondrial cell death induced by toxins or gamma-radiation. It has been found that aromatic IBT analogues of PFT-alpha are more cytoprotective and nonpeptide-based, isatin sulfonamides selectively inhibit caspases 3 and 7, responsible for mitochondrial mediated apoptosis. Therefore, we envisioned the synthesis of novel IBTs 4 and 5 bearing sulfonamide moiety and observed the mitigating effects of these IBTs in rescue of malathion induced apoptosis in testicular germ cells of goat. Two IBTs (4b; R = CH3, 5b; R-1 = Cl) showed very high survival rate of cells whereas IBT 41 (R = NO2) showed some exceptional behaviour by increasing the apoptosis. These IBTs nullify the cytotoxic effect of malathion on mitochondria, following p53-independent pathway. (C) 2012 Elsevier Masson SAS. All rights reserved.