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Öğe Evaluation of structural, spectral characterization and in vitro cytotoxic activity studies of some polycyclic aromatic compounds(Elsevier, 2020) Rezaeivala, Majid; Sayin, Koray; Sahin-Bolukbasi, Serap; Tandogan, Derya; Kose, Muhammet; Kose, AysegulThe present study aims to introduce three known and three new stable polycyclic aromatic compounds synthesized. With MALDI-Mass, H-1 and C-13 NMR spectroscopy, all new compounds were characterized. In the DMF solution were carried out the electrochemical and photophysical properties of the polyaromatic compounds. The compounds are highly fluorescent showing green-red emission when excited at one single wavelength. For the compound 3, it was shown that the highest Stokes Shift (191 nm) appeared which may be due to the excited state energy transfer. The compounds also indicated the blue-orange region of the electromagnetic spectrum strong emission bands. Additionally, compounds 1, 3, 4, and 5 were investigated for their in vitro cytotoxic activities against PC-3 prostate cancer cells, L-929 non-cancerous cells, and MDA-MB-231 breast cancer for 24 h, 48 h and 72 h. The results obtained from the experiment demonstrated that compounds had different cytotoxic activity against cell lines. Compound 3 was indicated to be inactive against L-929 cells and MDA-MB-231 cancer cells, whereas compounds 1, 4 and 5 indicated a dose and time-dependent cytotoxic activity against PC-3, MDA-MB-231, and L-929 cell lines. It was found that the most sensitive cells to compound 5 were MDA-MB-231 human breast cancer cells. Additionally, it became clear that compounds 1 and 3 had significant selectivity for human PC-3 prostate cancer cells, and compounds 1, 4 and 5 had considerable selectivity for human MDA-MB-231 breast cancer cells. Also, the quantum chemical examinations of six organic compounds were conducted at the B3LYP/6-31G level in the gas phase and water. According to calculated results, compound 5 was found to be the best candidate for NLO applications. (C) 2020 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.Öğe Evaluation of the Neurotoxicity of Strontium and Glycyrrhiza Glabra: First Report(Turkish Neurosurgical Soc, 2021) Soylemez, Burcak; Sahin-Bolukbasi, SerapAIM: To investigate the neurotoxic effects of strontium (Sr) compounds and Glycyrrhiza glabra (licorice, G. glabra). MATERIAL and METHODS: In this study, we conducted neurotoxicity assays on the human cortical neuronal cell line HCN-2 (CRL-10742) to determine the potential neurotoxic effects of Sr and G. glabra. RESULTS: No significant decrease in HCN-2 cell viability was observed with longer Sr exposure or Sr concentrations up to 2000 mu g/mL. The IC50 values of Sr for 24 and 48 hours of exposure were >2000 mu g/mL, and 936.9 +/- 0.09 mu g/mL for 72 hours. However, we observed a significant reduction in HCN-2 cell viability with longer exposure and higher concentrations of G. glabra. The IC50 values of G. glabra for 24, 48, and 72 hours were 545.1 +/- 0.03 mu g/mL, 398.1 +/- 0.03 mu g/mL, and 393.3 +/- 0.02 mu g/mL, respectively. CONCLUSION: Additional studies are needed to further investigate the neurotoxicity of Sr and G. glabra, and elucidate the pathway by which these compounds exert their therapeutic effects in pathological conditions.Öğe An in vitro Study of Cytotoxic Activity of Euphorbia macroclada boiss on Mcf-7 Cells(ASSOC PHARMACEUTICAL TEACHERS INDIA, 2018) Tas, Ayca; Sahin-Bolukbasi, Serap; Cevik, Esranur; Ozmen, Esma; Gumus, Erkan; Silig, YavuzObjective: The study was aimed to evaluate the cytotoxic activity of acetone extract of leaves, flower and body of Euphorbia macroclada boiss on human breast cancer cell line (MCF-7). Material: The cells were plated at a cell density of 1x10(5) cells in 96-well plates and grown with DMEM medium containing supplemented with 10% FBS and 1% penicillin. The cells were treated by different concentrations of acetone extract of Euphorbia macroclada boiss (10-1000 mu g/mL) during 24, 48 and 72 h. The cytotoxic activities of the tested compounds were determined by cell proliferation analysis using standard (3-(4,5- dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Results: After the evaluation of cytotoxicity assay results, it is determined that flower and body parts have a significant cytotoxic effect on MCF-7 breast cancer cell line. The values that obtained reading at 570 nm spectrophotometrically, were analyzed with GraphPad Prism7 and IC50 growth inhibition values was determined. Conclusion: The results of MTT assay showed that leaves, flower and body significantly reduced % cell viability comparative to the control. It was also shown that body had more growth inhibitory effect on MCF-7 cell compared to the leaves part.Öğe Rhodium(i) N-heterocyclic carbene complexes: synthesis and cytotoxic properties(Royal Soc Chemistry, 2021) Slimani, Ichraf; Sahin-Bolukbasi, Serap; Ulu, Mustafa; Evren, Enes; Gurbuz, Nevin; Ozdemir, Ilknur; Hamdi, NaceurRhodium(i) complexes bearing N-heterocyclic carbene (NHC) ligands have been widely used in catalytic chemistry, but there are very few reports of biological properties of these types of complexes. A series of benzimidazolium salts and their [RhCl(NHC)(COD)] complexes were synthesized. The obtained complexes were synthesized and characterized by elemental analysis, FT-IR, H-1 and C-13 NMR. All compounds were screened for in vitro cytotoxic activities against a panel of human cancer cells (HT-29 colon, Ishikawa endometrial, and U-87 glioblastoma) using the MTT assay for 48 h of incubation time. Mouse fibroblast cells (L-929) were used as healthy cells. Complexes had exhibited significantly higher cytotoxic activity towards cancer cells than their ligands and complex 2b showed the most selective cytotoxic activity against HT-29 cancer cells (SI;7.05) and Ishikawa cancer cells (SI; more than 9.8). The complexes showed strong in vitro cytotoxic activity against cancer cells, with IC50 values of lower than 10 mu M (except 2a against HT-29 (12.8 mu M) and 2b against U-87 (11.1 mu M)). All complexes (2a-d) showed the highest in vitro cytotoxic activity against Ishikawa endometrial cancer cells with IC50 values of 2.93 +/- 0.06, <1, 2.60 +/- 0.05, and 2.85 +/- 0.06 mu M, respectively. Complexes were found to be highly cytotoxic against HT-29, Ishikawa, and U-87 cancer cells compared to the anticancer agents, cisplatin and 5-FU.Öğe Silver(I)-N-heterocyclic carbene complexes challenge cancer; evaluation of their anticancer properties and in silico studies(Wiley, 2021) Sahin-Bolukbasi, Serap; Canturk-Kilickaya, Pakize; Kilickaya, OzanBecause of the continuous need for efficient therapeutic agents against various kinds of cancers and infectious diseases, the pharmaceutical industry has to find new candidates and strategies to develop novel and efficient drugs. They increasingly use computational tools in R&D stages for screening extensive sets of drug candidates before starting pre-clinical and clinical trials. N-Heterocyclic carbenes (NHCs) can be evaluated as good drug candidates because they offer both anti-cancer and anti-inflammatory features with their general low-toxicity profiles. To date, different kinds of NHCs (Cu, Co, Ni, Au, Ag, Ru, etc.) have been synthesized and their therapeutic uses has been shown. Here, we have reviewed the recent studies focused on Ag(I)-NHC complexes and their anti-cancer activities. Also, existing examples of the usage of density functional theory and structure-activity relationship have been evaluated.Öğe Some new morpholine-based Schiff-base complexes; Synthesis, characterization, anticancer activities and theoretical studies(Elsevier Science Sa, 2020) Rezaeivala, Majid; Ahmadi, Musa; Captain, Burjor; Bayat, Mehdi; Saeidirad, Mandi; Sahin-Bolukbasi, Serap; Yildiz, BatuhanA new morpholine-based ligand (2) has been prepared from condensation of a branched amine containing morpholine, N1-(3-morpholinopropyl)-N1-((pyridine-2-yl)methyl)ethane-1,2-diamine (1), and salicylaldehyde. Metal complexes were synthesized by reaction of the ligand and metal salts in ethanol and the resulting products were characterized by elemental analyses, ESI-MS, H-1 and C-13 NMR spectra, infrared, and UV-Vis spectroscopy. The structure of two complexes including [ZnL](ClO4) (3) and [NiHL](ClO4)center dot H2O (6a) have been determined by single crystal X-ray structural analysis, showing that the metal atoms are in a distorted trigonal bipyramidal (Zn) and a square planar (Ni) environment, respectively. Compounds were assayed for their anticancer activities against a panel of human tumor cell lines, including breast cancer cells (MCF-7, MDA-MB-231), prostate cancer cells (PC-3) and human normal lung fibroblast cells (WI-38). Compounds 1, 2, 7, 9 and 10 demonstrated lower activity against MCF-7, MDA-MB-231 and PC-3 cell lines (IC50s > 100 mu M) compared to other compounds. It has been shown that complexes 3, 4, 5, 6, and 8 possess different anticancer potentials against MCF-7, MDA-MB-231 and PC-3. More importantly, it was observed that compounds 3, 5 and 6 demonstrate a lower activity against WI-38 normal cell line than they do against cancer cell lines. Our results indicated that compound 8 has the highest anticancer activity on cancer cell lines, and the reason for that can be attributed to the presence of a silver atom in the complex. These results clearly showed that the anticancer activities of these compounds depend on the type of metal in the complex as well as the tested cancer cell line. Furthermore, the geometries of the [ML](n+) (M = Zn2+, Cd2+, Mn2+, Cu2+, Ni2+, Ag+, Fe3+ and Co2+, n = 0, 1, 2) complexes have been optimized at the BP86/def2-SVP level of theory. The nature of M -> L bonds in [ML](n+) complexes have been studied with the help of NBO analysis.Öğe Superoxide Dismutase 1 (SOD 1) A251G Polymorphism(WALTER DE GRUYTER GMBH, 2017) Silig, Yavuz; Tas, Ayca; Sahin-Bolukbasi, Serap; Caglayan, Gulcin; Sari, IsmailObjective: A genetic polymorphism of SOD1 A251G(rs2070424) is in the 3rd intron region of the SOD gene. The aim of this study was to determine the frequencies of the polymorphisms of the SOD1 A251G in a Turkish population, including 494 healthy individuals. Methods: The 494 Turkish individuals were genotyped for polymorphisms of SOD1 gene. The distribution of SOD1 A251G polymorphisms in this population was examined using a PCR-RFLP method. Genotype and allele frequencies were estimated by counting. Hardy-Weinberg equation between expected and observed genotype distributions was assessed using the X-2 test. Results: In the present study, the distribution of SOD1 A251G polymorphisms in a Turkish population including 494 (females: 278, 56.3% and males: 216, 43.7%) healthy individuals was examined. The mean age of the study population was 38.4 +/- 16.6 years (males, 39.8 +/- 17.1; females, 37.3 +/- 16.1). The observed genotype frequencies of SOD1 A251G were 86.2, 13.4 and 0.4% for AA, AG and GG, respectively. Conclusions: This study provides basic information about the allele and genotype frequency distributions of polymorphisms in the SOD1 A251G gene studied. These frequencies may be useful parameters as a reference for future studies on genetic basis of various diseases and cancer susceptibility.Öğe Synthesis and antitumor activity of new silver(I)-N-heterocyclic carbene complexes(Taylor & Francis Ltd, 2019) Sahin, Neslihan; Sahin-Bolukbasi, Serap; Marsan, HalisIn this study, two novel benzimidazole-based N-heterocyclic carbene ligands (1a-b) and their silver(I) complexes (2a-b) were synthesized. All new compounds were characterized by FT-IR, LC-MS, H-1 NMR, and C-13 NMR spectroscopies. The in vitro antitumor activities of NHC ligands (1a-b) and their silver(I) complexes (2a-b) against DU-145 human prostate cancer cells, MDA-MB-231 and MCF-7 human breast cancer cells and L-929 (normal cells adipose from mouse) were also determined using MTT analysis for 24 h, 48 h, and 72 h. The results showed that while NHC ligands did not have in vitro antitumor activity on MCF-7, MDA-MB-231 and DU-145 cells, Ag(I)-NHC complexes have in vitro antitumor activities. The in vitro antitumor activity of 2a was found to be lower than that of 2b. Ag(I)-NHC complexes were observed to have higher IC50 values for non-cancerous cell lines than cancer cells.Öğe Synthesis, characterization, and cytotoxic activity studies of new N4O complexes derived from 2-({3-[2-morpholinoethylamino]-N3-([pyridine-2-yl]methyl) propylimino} methyl)phenol(Wiley, 2020) Rezaeivala, Majid; Ahmadi, Musa; Captain, Burjor; Sahin-Bolukbasi, Serap; Dehghani-Firouzabadi, Ahmad Ali; Gable, Robert WilliamA new unsymmetrical five-coordinate Schiff base ligand (HL) with an N4O donor set (2) has been prepared by condensation of N1-(2-morpholinoethyl)-N1-([pyridine-2-yl]methyl)propane-1,3-diamine with 2-hydroxy-benzaldehyde. Metal complexes [ML](n+) (M = Zn2+, Cd2+, Mn2+, Cu2+, Ni2+, Ag+, Fe3+, and Co2+ (3-10) were synthesized by the reaction of the ligand and metal salts in ethanol. The resulting products were characterized by elemental analyses, infrared, H-1 and C-13 nuclear magnetic resonance spectra (in the case of Cd and Zn complexes), UV-Vis, electrospray ionization-mass spectrometric, and conductivity measurements. The structure of the complexes [ZnL](ClO4) (3), [CdL](ClO4) (4), and [CuL](ClO4) (7) has been determined by single-crystal X-ray diffraction analysis. The metal complexes were determined to have a distorted trigonal bipyramidal (Zn and Cd) or a distorted square pyramidal (Cu) geometry. The cytotoxic potential of each compound (1-10) against MCF-7 and MDA-MB-231 (breast cancer cells), PC-3 (prostate cancer cells), and WI-38 human normal lung fibroblast cells was evaluated using the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide) assay. Compounds 1, 2, and 10 did not display any activity toward any cell line tested. None of the compounds except compound 8 was cytotoxic toward PC-3. Compounds 4 and 8 showed the highest cytotoxic activity against the MCF-7 and MDA-MB-231 cell lines. Because compounds 3, 6, and 9 have similar half-maximal inhibitory concentration values against cancer cells and normal cells, these compounds displayed poor selectivity between cancer and normal cells. More importantly, it was observed that compound 5 acts differently toward different types of cell lines. For example, it displays lower cytotoxicity against the WI-38 normal cell line than it does against the MDA-MB-231 cell line.Öğe Synthesis, characterization, and investigation of antiproliferative activity of novel Ag (I)-N-Heterocyclic Carbene (NHC) compounds(Elsevier, 2020) Cevik-Yildiz, Esranur; Sahin, Neslihan; Sahin-Bolukbasi, SerapThe aim of this study was to present the synthesis, characterization, and investigation of the antiproliferative activity of new metal N-Heterocyclic Carbene (NHC) salts (1a-c) and their Ag(I) complexes (2a-c). All synthesized compounds were characterized using elemental analysis, LC-MS, FT-IR,H- 1 NMR, and C-13 NMR spectroscopy techniques. Salts and complexes were tested for antiproliferative activities on human breast and prostate cancer cell lines (MCF-7, MDA-MB-23, DU-145) and L-929 normal cells for 24 h, 48 h and 72 h using MTT assays. The Ag(I)-NHC complexes (2a c) showed dose and time-dependent cytotoxic activity against all cell lines. MDA-MB-231 and MCF-7 human breast carcinoma cells were the most sensitive to displaying IC50 lower than 1 mu M at all time points for 2a and 2b complexes respectively. The IC(50)s for Ag(I)-NHC were higher in normal cells especially compared to the breast cancer cells, suggesting that complexes possessed noteworthy selectivity for human breast cancer cells. Complex 2a showed high selectivity (>= 13-fold) for MDA-MB-231 breast cancer cells at all time points. These results also demonstrated that complex 2b has 4-7-fold selectivity against MCF-7 breast cancer cells. (C) 2019 Published by Elsevier B.V.Öğe The Determination of In vitro Antioxidant and Cytotoxic Activities of Resin Obtained from Cilician Fir (Abies cilicica (Antoine & Kotschy) Carriere)(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2020) Ucar, Esra; Sahin-Bolukbasi, Serap; Ulu, Mustafa; Askin Akpulat, HuseyinIn this study, the antioxidant and cytotoxic activities of resin obtained from the Cilician Fir plant were evaluated. This resin has antioxidant activity according to 2,2'-Azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assay. The in vitro cytotoxic activity of the resin was investigated against a panel of human cancer cells (MDA-MB-231, Hep G2, PC-3, U-87, MCF-7, HT-29) with the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay for 48 h. Normal human lung fibroblast cells (WI-38) were used as healthy cells. The results indicated that the in vitro cytotoxic activity of the resin depends on the cell line type and concentration of the resin. According to the IC50 values, the resin has the most cytotoxic activity on endometrial adenocarcinoma cancer cells (IC50=8.94 +/- 0.03 mu g mL(-1)) compared to other cancer cells. The results also indicated that Ishikawa endometrial adenocarcinoma cells, which have Selectivity Index (SI) value >2, have the most sensitivity against the resin. This study provides the first evidence that the resin inhibits the different cancer cells' growth.
