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New complexes of platinum and palladium were isolated with 4-nitrobenzoic hydrazide (4-NH) and characterized by spectroscopic techniques. Results show that the ligand is coordinated to metallic ions by the basic nitrogen of NH2 group and have the general structure cis-[M(4-NH)2X2] where M= Pt or Pd and x = Cl or I. The compound III, [Pt(4-NH)2I2], was found to display cytotoxicity (IC50 = 0.96 µmol L−1) against the K562 tumoral cell line. This complex is significantly more cytotoxic than cisplatin. [...]
Novel heavy metal complexes: Sr(5-NH2-phen)4(NO3)(OH)(H2O)2 (1) (synthesized via a static self-assembly process) and Sn(phen)(NO3)(OH)(H2O) (2), Sn(5-NH2-phen)(OH)(Cl)(H2O) (3), Pb(5-NH2-phen)(NO3)2(H2O) (4) (obtained via metal competitive reactions under mild conditions) were reported. The coordination compounds were characterized by elemental analysis, FTIR-spectroscopy and FAB-mass spectrometry. Their cytotoxicity was measured by MTS-test towards human tumour (MDA-MB-231, HT-29, HeLa, HepG2) and non-tumour diploid (Lep-3) cell lines. The most pronounced cytotoxic effect on all cancer lines showed 1 and 4 at their high concentrations as well as 1 at its lower ones (≤ 4×10−2 mg). Therefore, strontium complex of 5-amino-o-phenanthroline (1) exhibited the widest antitumour spectrum activity, having no toxicity to non-tumour cells at quantities ≤ 4×10−2 mg. The computed EC50 values of 1–4 against MDA-MB-231, HT-29, HeLa, HepG2 varied from 1.40×10−3 to 6.31×10−6 M. Towards Lep-3 substances 2–4 showed IC50 7.52×10−4 − 0.44 M. Substance 1 possess EC50=1.26×10−7 M to the non-tumour cells. [...]
The present study reports potential activities like cytotoxic, genotoxic and apoptotic activity of phenolic compound 4-(4-(3,4-dimethoxyphenyl)hexahydrofuro[3,4-c]furan-1-yl)-2-methoxyphenyl acetate isolated from methanolic extract of Pandanus odorattissimus. The compound showed a significant cytotoxic effect on Human Leukemia 60 (HL-60) cell line. Exposure of the compound reduced the viability of HL-60 cells after 12, 24 and 48 hours, the compound exerted a significant cytotoxic effect on HL-60 cells. The compound also induced significant DNA damage. The results of comet assay with pattern of the HL-60 cells has shown an intact head and complete absence of DNA fragments in the form of tail suggesting that the doses are not genototoxic. The phenolic compound at concentration of 20 µg/mL, showed an increase in percentage tail of DNA upto 6.21 units when compared to control 5.35. Although all of the compound induced significant DNA damage it induced apoptotic in the middle level and led to significant level. Apoptotic effect of compound on HL-60 cells after 72 h increased. Furthermore, the compound induced slight necrosis in HL-60 cells. Although the compound induced significant DNA damage, it induced apoptotic at the middle level. Apoptotic effect of compound on HL cells after 72 hrs increased level, furthermore the compound induced slight necrosis in HL-60 cells.
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