Objective:To investigate the estrogenic effect of(8,9)-furanyl-pterocarpan-3-ol(FPC)on growth of human breast cancer T47D cells and the interactions between the FPC and tamoxifen(TAM),on the growth of estrogen recepto...Objective:To investigate the estrogenic effect of(8,9)-furanyl-pterocarpan-3-ol(FPC)on growth of human breast cancer T47D cells and the interactions between the FPC and tamoxifen(TAM),on the growth of estrogen receptor-dependent breast cancer T47D cells.Methods:The proliferation effect of FPC were conducted on T47D cells in vitro by MTT test.T47D cells were treated with FPC alone(0.01-200μmol/L)or in combination with TAM 20 nmol/L.Furthermore,the expression of ERαor c-Myc were also determined by immunohistochemistry.Results:The results indicated that administration of an anti-estrogen TAM showed growth inhibitory effect on T47D cells,wheraes co-administered with low concentration(less than 1μmol/L)of FPC attenuated to promote cell proliferation.In contrast,the combination of TAM with higher doses(more than 20μmol/L)of FPC showed growth inhibitory.This result was supported by immunocytochemistry studies that the administration of 20 nmol/L TAM down-regulated ER-αand c-Myc,but the combination of 20 nmol/L TAM and 1μmol/L FPC robustly up-regulated expression of ER-α.Thus,the reduced growth inhibition of TAM 20 nmol/L by FPC 1μmol/L on T47D cells may act via the modulation of ER-α.Conclusions:The findings indicate and suggest that FPC had estrogenic activity at low concentrations and anti-estrogenic effect that are likely to be regulated by c-Myc and estrogen receptors.We also confirm that low concentration of FPC attenuated the growth-inhibitory effects of TAM on mammary tumor prevention.Therefore,the present study suggests that caution is warranted regarding the consumption of dietary FPC by breast cancer patients while on TMA therapy.展开更多
Objective:To investigate the cytotoxic effect of ethanol extract of the stem bark of asam kandis[Garcinia cowa Roxb.(G.cowa)]on T47 D breast cancer cell line.Methods:The cytotoxicity of ethanol extract was carried out...Objective:To investigate the cytotoxic effect of ethanol extract of the stem bark of asam kandis[Garcinia cowa Roxb.(G.cowa)]on T47 D breast cancer cell line.Methods:The cytotoxicity of ethanol extract was carried out against human breast cancer cell line(T47D) by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide colorimetric assay.The extract was added at various concentrations(0.1.1,10 and 100 μg/mL).The level of cytotoxicity was determined by calculating the level of IC_(50),that was based on the percentage of the cell death after 24 h treatment with the extract.Cell morphological changes were observed by using inverted microscope.Results:The 3-(4.5-dimelhylthiazol-2-yl)-2.5-diphenyltelrazolium bromide assay showed that ethanol extract of G.cowa exhibited significant cytotoxic effect on T47 D with IC_(50) value of(5.10+1.68) μg/mL.Morphological alteration of the cell lines after exposure to ethanol extract of G.cowa was observed under phase contrast microscope in a dosc-dependent manner.ConclusionsThe results suggest the possible use of ethanol extract of asam kandis for preparing herbal medicine for cancer-related ailments.展开更多
Objective:To evaluate the effects of n-hexane insoluble fraction(HIF)of Ficus septica leaves in combination with doxorubicin on cytotoxicity,cell cycle and apoptosis induction of breast cancer T47D cell lines.Methods:...Objective:To evaluate the effects of n-hexane insoluble fraction(HIF)of Ficus septica leaves in combination with doxorubicin on cytotoxicity,cell cycle and apoptosis induction of breast cancer T47D cell lines.Methods:The in vitro drugs-stimulated cytotoxic effects were determined using MTT assay.Analysis of cell cycle distribution was performed using flowcytometer and the data was analyzed using ModFit LT 3.0 program.Apoptosis assay was earned out by double staining method using ethydium bromide-acridin orange.The expression of cleaved-poly(ADP-ribose)polymerase(PARP)on T47D cell lines was identified using immunocytochemistry.Results:The combination exhibited higher inhibitory effect on cell growth than the single treatment of doxorubicin in T47D cells.In addition,combination of doxorubicin and HIF increased the incidence of cells undergoing apoptosis.HIF could improve doxorubicin cytotoxic effect by changing the accumulation of cell cycle phase from G_2/M to G_1 phase.The combination also exhibited upregulation of cleaved-PARP in T47D cells.Conclusions:Based on this results,HIF is potential to be developed as co-chemotherapeutic agent for breast cancer by inducing apoptosis and cell cycle arrest.However,the molecular mechanism need to be explored further.展开更多
基金Supported in part by Hibah Competition Grant Research of Faculty of PharmacyGadjah Mada University(Grant No.UGM/FA/851.d/M/05/01)
文摘Objective:To investigate the estrogenic effect of(8,9)-furanyl-pterocarpan-3-ol(FPC)on growth of human breast cancer T47D cells and the interactions between the FPC and tamoxifen(TAM),on the growth of estrogen receptor-dependent breast cancer T47D cells.Methods:The proliferation effect of FPC were conducted on T47D cells in vitro by MTT test.T47D cells were treated with FPC alone(0.01-200μmol/L)or in combination with TAM 20 nmol/L.Furthermore,the expression of ERαor c-Myc were also determined by immunohistochemistry.Results:The results indicated that administration of an anti-estrogen TAM showed growth inhibitory effect on T47D cells,wheraes co-administered with low concentration(less than 1μmol/L)of FPC attenuated to promote cell proliferation.In contrast,the combination of TAM with higher doses(more than 20μmol/L)of FPC showed growth inhibitory.This result was supported by immunocytochemistry studies that the administration of 20 nmol/L TAM down-regulated ER-αand c-Myc,but the combination of 20 nmol/L TAM and 1μmol/L FPC robustly up-regulated expression of ER-α.Thus,the reduced growth inhibition of TAM 20 nmol/L by FPC 1μmol/L on T47D cells may act via the modulation of ER-α.Conclusions:The findings indicate and suggest that FPC had estrogenic activity at low concentrations and anti-estrogenic effect that are likely to be regulated by c-Myc and estrogen receptors.We also confirm that low concentration of FPC attenuated the growth-inhibitory effects of TAM on mammary tumor prevention.Therefore,the present study suggests that caution is warranted regarding the consumption of dietary FPC by breast cancer patients while on TMA therapy.
基金Supported by Hibah Doktor scheme of Directorate General of Higher Education,Ministry of Education and Culture,Republic of Indonesia(Grant No.DIPA 09/UN.16/D-DD/2014)
文摘Objective:To investigate the cytotoxic effect of ethanol extract of the stem bark of asam kandis[Garcinia cowa Roxb.(G.cowa)]on T47 D breast cancer cell line.Methods:The cytotoxicity of ethanol extract was carried out against human breast cancer cell line(T47D) by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide colorimetric assay.The extract was added at various concentrations(0.1.1,10 and 100 μg/mL).The level of cytotoxicity was determined by calculating the level of IC_(50),that was based on the percentage of the cell death after 24 h treatment with the extract.Cell morphological changes were observed by using inverted microscope.Results:The 3-(4.5-dimelhylthiazol-2-yl)-2.5-diphenyltelrazolium bromide assay showed that ethanol extract of G.cowa exhibited significant cytotoxic effect on T47 D with IC_(50) value of(5.10+1.68) μg/mL.Morphological alteration of the cell lines after exposure to ethanol extract of G.cowa was observed under phase contrast microscope in a dosc-dependent manner.ConclusionsThe results suggest the possible use of ethanol extract of asam kandis for preparing herbal medicine for cancer-related ailments.
基金Supported by DP2M DIKT1(Directorate of Higher Education) Ministry of EducationIndonesia through "Hibah Bersaing" Research Grant 2011
文摘Objective:To evaluate the effects of n-hexane insoluble fraction(HIF)of Ficus septica leaves in combination with doxorubicin on cytotoxicity,cell cycle and apoptosis induction of breast cancer T47D cell lines.Methods:The in vitro drugs-stimulated cytotoxic effects were determined using MTT assay.Analysis of cell cycle distribution was performed using flowcytometer and the data was analyzed using ModFit LT 3.0 program.Apoptosis assay was earned out by double staining method using ethydium bromide-acridin orange.The expression of cleaved-poly(ADP-ribose)polymerase(PARP)on T47D cell lines was identified using immunocytochemistry.Results:The combination exhibited higher inhibitory effect on cell growth than the single treatment of doxorubicin in T47D cells.In addition,combination of doxorubicin and HIF increased the incidence of cells undergoing apoptosis.HIF could improve doxorubicin cytotoxic effect by changing the accumulation of cell cycle phase from G_2/M to G_1 phase.The combination also exhibited upregulation of cleaved-PARP in T47D cells.Conclusions:Based on this results,HIF is potential to be developed as co-chemotherapeutic agent for breast cancer by inducing apoptosis and cell cycle arrest.However,the molecular mechanism need to be explored further.
