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Combined Effect of Caspase-Dependent and Caspase-Independent Apoptosis in the Anticancer Activity of Gold Complexes with Phosphine and Benzimidazole Derivatives
| Content Provider | MDPI |
|---|---|
| Author | Ángeles Sánchez-González, Rebeca, Alvariño Ezequiel, M. Vázquez-López Emilia, García-Martínez Rouco, Lara Alfonso, Amparo Maneiro, Marcelino |
| Copyright Year | 2020 |
| Description | Since the potential anticancer activity of auranofin was discovered, gold compounds have attracted interest with a view to developing anticancer agents that follow cytotoxic mechanisms other than cisplatin. Two benzimidazole gold(I) derivatives containing triphenylphosphine (Au(pben)(PPh3)) (1) or triethylphosphine (Au(pben)(PEt3)) (2) were prepared and characterized by standard techniques. X-ray crystal structures for 1 and 2 were solved. The cytotoxicity of 1 and 2 was tested in human neuroblastoma SH-SY5Y cells. Cells were incubated with compounds for 24 h with concentrations ranging from 10 µM to 1 nM, and the half-maximal inhibitory concentration (IC50) was determined. 1 and 2 showed an IC50 of 2.7 and 1.6 µM, respectively. In order to better understand the type of cell death induced by compounds, neuroblastoma cells were stained with Annexin-FITC and propidium iodide. The fluorescence analysis revealed that compounds were inducing apoptosis; however, pre-treatment with the caspase inhibitor Z-VAD did not reduce cell death. Analysis of compound effects on caspase-3 activity and reactive oxygen species (ROS) production in SH-SY5Y cells revealed an antiproliferative ability mediated through oxidative stress and both caspase-dependent and caspase-independent mechanisms. |
| Starting Page | 10 |
| e-ISSN | 14248247 |
| DOI | 10.3390/ph14010010 |
| Journal | Pharmaceuticals |
| Issue Number | 1 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-12-24 |
| Access Restriction | Open |
| Subject Keyword | Pharmaceuticals Medicinal Chemistry Gold(i) Compounds Cytotoxic Activity Caspase Apoptosis Neuroblastoma Sh-sy5y |
| Content Type | Text |
| Resource Type | Article |
