Rosa canina is a member of the genus Rosa that has long been used for medical objectives. Several studies have reported cytotoxic effects of different Rosa species, but there has been only limited investigation of the...Rosa canina is a member of the genus Rosa that has long been used for medical objectives. Several studies have reported cytotoxic effects of different Rosa species, but there has been only limited investigation of the cytotoxic effect of R. canina. The purpose of the current study was to examine the potential effect of R.canina extract on cell viability, the cell cycle, apoptosis, and the expression of telomerase in human colon cancer(WiDr) cells. The cytotoxic effect of the extract was determined using MTT assay. The mechanism involved in the cytotoxic effect of the extract was then evaluated in terms of apoptosis and the cell cycle using flow cytometry. Mitochondrial membrane potential(MMP) was investigated using the fluorometric method, and expression levels of telomerase were studied using RT-PCR. R. canina extract exhibited a selective cytotoxic effect on WiDr cells compared with normal colon cells. The extract induced cell cycle arrest at the S phase and apoptosis via reduced MMP in WiDr cells. R. canina extract significantly repressed telomerase expressions at treatment times of 48 and 72 h in WiDr cells. Our results suggest that R. canina may have considerable potential for development as a novel natural product-based anticancer agent.展开更多
Purpose: Investigating the triple effect of doxorubicin, 5-fluorouracil, propranolol on MCF-7 (ER+, WTp53) breast cancer cell line with MTT test and survival analysis. Materials/Methods: In order to determine effectiv...Purpose: Investigating the triple effect of doxorubicin, 5-fluorouracil, propranolol on MCF-7 (ER+, WTp53) breast cancer cell line with MTT test and survival analysis. Materials/Methods: In order to determine effective dosages of a combination of doxorubicin, 5-fluorouracil, propranolol on the MCF-7 cell line by using MTT and survival analysis technique. Result: IC50 values acquired by MTT tests are 0.01 mg/ml for doxorubicin, 6 mg/ml for 5-fluorouracil, 30 mg/ml for propranolol and 0.2/1/30 mg/ml (with previous respect) if all three agents are combined. It is found that the use of doxorubicin, 5-fluorouracil, and propranolol in combination is much effective than their single application. Discussion: Moderate concentrations of doxorubicin, 5-fluorouracil, and propranolol, if they are applied individually, showed high toxicity. When we used these drugs in combination;toxic effects lessened with respect to monotherapy. In the MCF-7 cell line, doxorubicin (IC50: 0.01 μM) increases cell death rates significantly and propranolol (IC50: 3 μM) has minimum effects in monotherapy in contrast to others. Propranolol is only superior to itself in combination therapy (IC50: 4 μM). However 5-fluorouracil (IC50: 30 μM) showed antagonistic effects with respect to other drugs. Additionally, having applied the three drugs in combination on the MCF-7 cell line for the first time in literature, it is highly possible to assess the application of doxorubicin, 5-fluorouracil and propranolol combination as a novel therapy option.展开更多
Purpose: MCF-7 (ER+, WTP53) and MDA-MB-231 (ER Met, Mutant P53) Caffeic Acid Phenethyl Ester (CAPE) and DNA Methyl Transferase Inhibitor (DNMTi) in breast cancer cell lines of Zebularine (ZEB) single and combined appl...Purpose: MCF-7 (ER+, WTP53) and MDA-MB-231 (ER Met, Mutant P53) Caffeic Acid Phenethyl Ester (CAPE) and DNA Methyl Transferase Inhibitor (DNMTi) in breast cancer cell lines of Zebularine (ZEB) single and combined application of TP53, caspase-9, caspase 8 and caspase-3 genes as a result of the use of single and combined drug methylation profiles are aimed to be evaluated by specific PCR method. Material-Metods: In the MCF-7 and MDA-MB-231 breast cancer cell lines, MTT test and survival analysis were performed as a result of single and combined application of CAPE and Zebularine and Methylation Specific PCR was performed to examine the methylation of caspase-3, caspase-8, caspase-9 and TP53 genes. Results: According to the results of 24-hour drug administration, the IC50 for the MCF-7 cell line was determined as 200 μM, for CAPE 40 μM and for the combined values of 50 μM ZEB + 5 μM CAPE. The effects of caspase-3, caspase-8, caspase-9 and TP53 genes on the methylation level of ZEB, CAPE and ZEB + CAPE drug combination were determined by using bisulfite modified DNAs in MCF-7 and MDA-MB-231 cell lines. Discussion: In the MCF-7 cell line, the 120 μM ZEB viability rate was 51%, and the viability of 80 μM ZEB MDA-MB-231 breast cancer cells decreased by 59.7%. After 20 μM CAPE, viability in MCF-7 cells decreased by 31% in 120 μM CAPE and MDA-MB-231 cells decreased by 41%. The viability with 40 μM CAPE decreased by 19% in MDA-MB-231 cells. It was found that 20 μM CAPE concentration was associated with TP53 methylation in MCF-7 cell lines. The 80 μM ZEB concentration was found to be closely related to the unmethylated status of the TP53 gene. These results obtained with 50 μM ZEB + 5 μM CAPE application were found to be related to the methylated-unmetylated status of the TP53 gene in half (50%). For the caspase-9 gene of MDA-MB-231 cells, 80 μM ZEB concentration was found to be associated with unmetylated status. The effective use of drugs with low concentrations of the drug dose provides a more appropriate approach in terms of treatment.展开更多
The aim of this study is to investigate the anti-proliferative effects of Zebularine on caspase-3 and 9 genes by methylation and protein expression on SKBR3 cells. The SKBR3 cells were treated with Zebularine at diffe...The aim of this study is to investigate the anti-proliferative effects of Zebularine on caspase-3 and 9 genes by methylation and protein expression on SKBR3 cells. The SKBR3 cells were treated with Zebularine at different concentrations (0 - 140 μM) for 24 - 96 hours and the effects on the cell viability were shown. The effects on the cell migration and cell transformation were also demonstrated at the specified dose (IC50 = 40 μM). At the same time, the HRM method and western-blot analysis were used to understand the effects in the apoptotic mechanism. According to the obtained results, it was observed that Zebularine significantly decreased the cell proliferation, cell migration and the cell growth (p < 0.001). As a result of the methylation analyzes performed on SKBR-3 cells at the applied dose, it was observed that Zebularine caused a decrease in both caspase-3 and 9 methylation rates at the 72nd hour. However, both reductions in the methylation levels didn’t cause a significant change (p > 0.05). At the same time, it was detected by the western-blot analyses that there was a time dependent increase in caspase-3 genes while a decrease was detected in the caspase-9 gene in progress of time. The obtained results showed that the methylation changes occurring in the caspase genes weren’t related to the protein levels. According to these results, supportive results are obtained showing that the Zebularine can be used in chemotherapy and that this study is unique since it is the first study in the literature intending to investigate the effects of Zebularine on the SKBR3 cells.展开更多
In today’s world,Pleurotus ostreatus(Jacq.)P.Kumm.and Agaricus bisporus(J.E.Lance)Imbach species which are grown both wild and cultured are very popular for humans diet because these species have been used in traditi...In today’s world,Pleurotus ostreatus(Jacq.)P.Kumm.and Agaricus bisporus(J.E.Lance)Imbach species which are grown both wild and cultured are very popular for humans diet because these species have been used in traditional medicine,economicaly and pharmacology.Two species of edible mushrooms Pleurotus ostreatus and Agaricus bisporus were selected from natural and cultured ones to determine vitamins and mineral contents levels.In this study,total protein levels,vitamin A-E and C levels and some mineral levels such as Fe,Cu,Zn,K,Na and Ni were investigated in both natural and cultured species.展开更多
基金the Foundation of Scientific Research of Gumushane University for financially supporting this research under Project No: 13.F5119.02.1
文摘Rosa canina is a member of the genus Rosa that has long been used for medical objectives. Several studies have reported cytotoxic effects of different Rosa species, but there has been only limited investigation of the cytotoxic effect of R. canina. The purpose of the current study was to examine the potential effect of R.canina extract on cell viability, the cell cycle, apoptosis, and the expression of telomerase in human colon cancer(WiDr) cells. The cytotoxic effect of the extract was determined using MTT assay. The mechanism involved in the cytotoxic effect of the extract was then evaluated in terms of apoptosis and the cell cycle using flow cytometry. Mitochondrial membrane potential(MMP) was investigated using the fluorometric method, and expression levels of telomerase were studied using RT-PCR. R. canina extract exhibited a selective cytotoxic effect on WiDr cells compared with normal colon cells. The extract induced cell cycle arrest at the S phase and apoptosis via reduced MMP in WiDr cells. R. canina extract significantly repressed telomerase expressions at treatment times of 48 and 72 h in WiDr cells. Our results suggest that R. canina may have considerable potential for development as a novel natural product-based anticancer agent.
文摘Purpose: Investigating the triple effect of doxorubicin, 5-fluorouracil, propranolol on MCF-7 (ER+, WTp53) breast cancer cell line with MTT test and survival analysis. Materials/Methods: In order to determine effective dosages of a combination of doxorubicin, 5-fluorouracil, propranolol on the MCF-7 cell line by using MTT and survival analysis technique. Result: IC50 values acquired by MTT tests are 0.01 mg/ml for doxorubicin, 6 mg/ml for 5-fluorouracil, 30 mg/ml for propranolol and 0.2/1/30 mg/ml (with previous respect) if all three agents are combined. It is found that the use of doxorubicin, 5-fluorouracil, and propranolol in combination is much effective than their single application. Discussion: Moderate concentrations of doxorubicin, 5-fluorouracil, and propranolol, if they are applied individually, showed high toxicity. When we used these drugs in combination;toxic effects lessened with respect to monotherapy. In the MCF-7 cell line, doxorubicin (IC50: 0.01 μM) increases cell death rates significantly and propranolol (IC50: 3 μM) has minimum effects in monotherapy in contrast to others. Propranolol is only superior to itself in combination therapy (IC50: 4 μM). However 5-fluorouracil (IC50: 30 μM) showed antagonistic effects with respect to other drugs. Additionally, having applied the three drugs in combination on the MCF-7 cell line for the first time in literature, it is highly possible to assess the application of doxorubicin, 5-fluorouracil and propranolol combination as a novel therapy option.
文摘Purpose: MCF-7 (ER+, WTP53) and MDA-MB-231 (ER Met, Mutant P53) Caffeic Acid Phenethyl Ester (CAPE) and DNA Methyl Transferase Inhibitor (DNMTi) in breast cancer cell lines of Zebularine (ZEB) single and combined application of TP53, caspase-9, caspase 8 and caspase-3 genes as a result of the use of single and combined drug methylation profiles are aimed to be evaluated by specific PCR method. Material-Metods: In the MCF-7 and MDA-MB-231 breast cancer cell lines, MTT test and survival analysis were performed as a result of single and combined application of CAPE and Zebularine and Methylation Specific PCR was performed to examine the methylation of caspase-3, caspase-8, caspase-9 and TP53 genes. Results: According to the results of 24-hour drug administration, the IC50 for the MCF-7 cell line was determined as 200 μM, for CAPE 40 μM and for the combined values of 50 μM ZEB + 5 μM CAPE. The effects of caspase-3, caspase-8, caspase-9 and TP53 genes on the methylation level of ZEB, CAPE and ZEB + CAPE drug combination were determined by using bisulfite modified DNAs in MCF-7 and MDA-MB-231 cell lines. Discussion: In the MCF-7 cell line, the 120 μM ZEB viability rate was 51%, and the viability of 80 μM ZEB MDA-MB-231 breast cancer cells decreased by 59.7%. After 20 μM CAPE, viability in MCF-7 cells decreased by 31% in 120 μM CAPE and MDA-MB-231 cells decreased by 41%. The viability with 40 μM CAPE decreased by 19% in MDA-MB-231 cells. It was found that 20 μM CAPE concentration was associated with TP53 methylation in MCF-7 cell lines. The 80 μM ZEB concentration was found to be closely related to the unmethylated status of the TP53 gene. These results obtained with 50 μM ZEB + 5 μM CAPE application were found to be related to the methylated-unmetylated status of the TP53 gene in half (50%). For the caspase-9 gene of MDA-MB-231 cells, 80 μM ZEB concentration was found to be associated with unmetylated status. The effective use of drugs with low concentrations of the drug dose provides a more appropriate approach in terms of treatment.
文摘The aim of this study is to investigate the anti-proliferative effects of Zebularine on caspase-3 and 9 genes by methylation and protein expression on SKBR3 cells. The SKBR3 cells were treated with Zebularine at different concentrations (0 - 140 μM) for 24 - 96 hours and the effects on the cell viability were shown. The effects on the cell migration and cell transformation were also demonstrated at the specified dose (IC50 = 40 μM). At the same time, the HRM method and western-blot analysis were used to understand the effects in the apoptotic mechanism. According to the obtained results, it was observed that Zebularine significantly decreased the cell proliferation, cell migration and the cell growth (p < 0.001). As a result of the methylation analyzes performed on SKBR-3 cells at the applied dose, it was observed that Zebularine caused a decrease in both caspase-3 and 9 methylation rates at the 72nd hour. However, both reductions in the methylation levels didn’t cause a significant change (p > 0.05). At the same time, it was detected by the western-blot analyses that there was a time dependent increase in caspase-3 genes while a decrease was detected in the caspase-9 gene in progress of time. The obtained results showed that the methylation changes occurring in the caspase genes weren’t related to the protein levels. According to these results, supportive results are obtained showing that the Zebularine can be used in chemotherapy and that this study is unique since it is the first study in the literature intending to investigate the effects of Zebularine on the SKBR3 cells.
文摘In today’s world,Pleurotus ostreatus(Jacq.)P.Kumm.and Agaricus bisporus(J.E.Lance)Imbach species which are grown both wild and cultured are very popular for humans diet because these species have been used in traditional medicine,economicaly and pharmacology.Two species of edible mushrooms Pleurotus ostreatus and Agaricus bisporus were selected from natural and cultured ones to determine vitamins and mineral contents levels.In this study,total protein levels,vitamin A-E and C levels and some mineral levels such as Fe,Cu,Zn,K,Na and Ni were investigated in both natural and cultured species.
