“…From the Table 1, the IC 50 of the complexes 1 and 2 were superior to the other complexes with Zn( ii ) based complexes, and also other complexes based on tetrazole–carboxylate. 35,42–44 Although the role of Zn( ii ) in the regulation of apoptosis seems to be cell type specific, and most studies are focused on the inhibitory effect of on the proliferation of breast and prostate cancer cells. 39,40 Our results showed that Zn( ii ) complexes also have obvious inhibitory cytotoxicity on HeLa cells, which plays an important role in mediating drug resistance and stress-induced apoptosis inhibition in tumoral cells.…”