Combination Effect of Tamoxifen and Ascorbic Acid Treatment on Breast Cancer Cells (MCF-7) and Cervical Cancer Cells (HeLa)

2021 ◽  
Vol 19 (02) ◽  
pp. 99-109
Author(s):  
HASMAH ABDULLAH ◽  
NORLIDA MAMAT ◽  
NOR MUNIRAH ZAKARIA ◽  
NUR IMAN FATIHAH MOHD YUNAN ◽  
MUHAMMAD IRFAN NOOR HISHAM ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cervical Cancer ◽  
Ascorbic Acid ◽  
Cancer Cells ◽  
Acid Treatment ◽  
Breast Cancer Cells ◽  
Combination Effect ◽  
Cervical Cancer Cells ◽  
Mcf 7

scholarly journals Typhonium flagelliforme decreases telomerase expression in HeLa cervical cancer cells

2016 ◽  
Vol 35 (1) ◽  
pp. 3
Author(s):  
Endang Purwaningsih ◽  
Yulia Suciati ◽  
Etty Widayanti
Keyword(s):  
Breast Cancer ◽  
Cervical Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Culture Media ◽  
Vero Cells ◽  
Telomerase Activity ◽  
Multiple Comparison Test ◽  
Cervical Cancer Cells ◽  
Experimental Laboratory

<p><strong>Background</strong><br /> Cancer cells have a relatively high telomerase activity compared to normal cells, so that cancer cells have the ability for continued proliferation and uncontrolled mitosis. Telomerase is an enzyme responsible for the length of telomeres, DNA segments located at the ends of eukaryotic chromosomes. Natural materials such as rodent tuber (<em>Typhonium flagelliforme</em>) have anticancer potential. The purpose of the present study was to determine the effects of <em>Typhonium flagelliforme </em>extract on telomerase expression in HeLa cervical cancer and T47D breast cancer cells.</p><p><br /> <strong>Methods </strong></p><p>This experimental laboratory study was conducted on cultured HeLa and T47D cancer cell lines, with normal Vero cells as controls, and using RPMI and M199 culture media. The study comprised three groups, i.e. controls, and groups receiving <em>Typhonium flagelliforme </em>extract at doses of ½ IC50 and IC50. Telomerase expression was measured by immunohistochemistry (IHC). Analysis of variance and LSD multiple comparison test were used to analyze the data.</p><p><strong> </strong></p><p><strong>Results </strong><br /> Telomerase expression in cancer cells showed significantly higher values compared to normal Vero cells. <em>Typhonium flagelliforme</em> extract was capable of significantly decreasing telomerase expression in cancer cells receiving the extract.</p><p><strong> </strong></p><strong>Conclusion </strong><br /> <em>Typhonium flagelliforme</em> extract at different doses is capable of decreasing telomerase expression more effectively in cervical cancer cells than in breast cancer cells. This study shows that <em>Typhonium flagelliforme</em> may have anti-cancer activity, necessitating further investigations.

scholarly journals Triethylenetetramine Synergizes with Pharmacologic Ascorbic Acid in Hydrogen Peroxide Mediated Selective Toxicity to Breast Cancer Cell

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Lianlian Wang ◽  
Xiaofang Luo ◽  
Cong Li ◽  
Yubing Huang ◽  
Ping Xu ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Cancer Cells ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cells ◽  
Selective Toxicity ◽  
Normal Cells ◽  
Mcf 7

Breast cancer is characterized by overexpression of superoxide dismutase (SOD) and downregulation of catalase and more resistance to hydrogen peroxide (H2O2) than normal cells. Thus, relatively high H2O2 promotes breast cancer cell growth and proliferation. However, excessive intracellular H2O2 leads to death of breast cancer cells. In cancer cells, high level ascorbic acid (Asc) is able to be autoxidized and thus provides an electron to oxygen to generate H2O2. In the present study, we demonstrated that triethylenetetramine (TETA) enhances Asc autoxidation and thus elevates H2O2 production in MCF-7 cells. Furthermore, Asc/TETA combination significantly impaired cancer cell viability, while having much milder effects on normal cells, indicating Asc/TETA could be a promising therapy for breast cancer. Moreover, SOD1 and N-acetyl-L-cysteine failed to improve MCF-7 cells viability in the presence of Asc/TETA, while catalase significantly inhibited the cytotoxicity of Asc/TETA to breast cancer cells, strongly suggesting that the selective cytotoxicity of Asc/TETA to cancer cells is H2O2-dependent. In addition, Asc/TETA induces RAS/ERK downregulation in breast cancer cells. Animal studies confirmed that Asc/TETA effectively suppressed tumor growth in vivo. In conclusion, TETA synergizes pharmacologic Asc autoxidation and H2O2 overproduction in breast cancer cells, which suppresses RAS/ERK pathway and results in apoptosis.

Mechanism research on the lupeol treatment on MCF-7 breast cancer cells based on cell metabonomics

2014 ◽  
Vol 32 (3) ◽  
pp. 278
Author(s):  
Dongdong SHI ◽  
Yuanyuan KUANG ◽  
Guiming WANG ◽  
Zhangxiao PENG ◽  
Yan WANG ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Mechanism Research ◽  
Mcf 7

Anticancer Potential of Calli Versus Seedling Extracts Derived from Rosmarinus officinalis and Coleus hybridus

2020 ◽  
Vol 21 (14) ◽  
pp. 1528-1538
Author(s):  
Sarah Albogami ◽  
Hadeer Darwish ◽  
Hala M. Abdelmigid ◽  
Saqer Alotaibi ◽  
Ahmed Nour El-Deen ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Transcriptional Profiling ◽  
Significant Inhibition ◽  
Rosmarinus Officinalis ◽  
Crude Extracts ◽  
Incidence And Mortality ◽  
Mcf 7

Background: In Saudi Arabia, the incidence and mortality rates of breast cancer are high. Although current treatments are effective, breast cancer cells develop resistance to these treatments. Numerous studies have demonstrated that active compounds in plant extracts, such as the phenolic compound Rosmarinic Acid (RA), exert anti-cancer effects. Objective: We investigated the anticancer properties of methanolic crude extracts of seedlings and calli of Rosmarinus officinalis and Coleus hybridus, two Lamiaceae species. Methods: MCF-7 human breast cancer cells were treated with methanolic crude extracts obtained from plant calli and seedlings generated in vitro, and cell proliferation was evaluated. Transcriptional profiling of the seedling and callus tissues was also conducted. Results: The mRNA expression levels of RA genes were higher in C. hybridus seedlings than in R. officinalis seedlings, as well as in C. hybridus calli than in R. officinalis calli, except for TAT and C4H. In addition, seedling and callus extracts of both R. officinalis and C. hybridus showed anti-proliferative effects against MCF-7 cells after 24 or 48 h of treatment. Discussion: At a low concentration of 10 μg/mL, C. hybridus calli and seedling extracts showed the most significant anti-proliferative effects after 24 and 48 h of exposure (p < 0.01); controls (doxorubicin) also showed significant inhibition, but lesser than that observed with C. hybridus (p < 0.05). Results with R. officinalis callus and seedling extracts did not significantly differ from those with untreated cells. Conclusion: Methanolic extracts of R. officinalis and C. hybridus are potentially valuable options for breast cancer treatment.

The Expression of Dopamine Receptors Gene and their Potential Role in Targeting Breast Cancer Cells with Selective Agonist and Antagonist Drugs. Could it be the Novel Insight to Therapy?

2019 ◽  
Vol 16 (2) ◽  
pp. 184-197 ◽  
Author(s):  
Hossein Bakhtou ◽  
Asiie Olfatbakhsh ◽  
Abdolkhaegh Deezagi ◽  
Ghasem Ahangari
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Cancer Cells ◽  
Dopamine Receptors ◽  
Breast Cancer Cells ◽  
D2 Receptors ◽  
Healthy Individuals ◽  
Agonist And Antagonist ◽  
The Mean ◽  
Mcf 7

Background:Breast cancer is one of the common causes of mortality for women in Iran and other parts of the world. The substantial increasing rate of breast cancer in both developed and developing countries warns the scientists to provide more preventive steps and therapeutic measures. This study is conducted to investigate the impact of neurotransmitters (e.g., Dopamine) through their receptors and the importance of cancers via damaging immune system. It also evaluates dopamine receptors gene expression in the women with breast cancer at stages II or III and dopamine receptor D2 (DRD2) related agonist and antagonist drug effects on human breast cancer cells, including MCF-7 and SKBR-3.Methods:The patients were categorized into two groups: 30 native patients who were diagnosed with breast cancer at stages II and III, with the mean age of 44.6 years and they were reported to have the experience of a chronic stress or unpleasant life event. The second group included 30 individuals with the mean age of 39 years as the control group. In order to determine the RNA concentration in all samples, the RNA samples were extracted and cDNA was synthesized. The MCF-7 cells and SKBR-3 cells were treated with dopamine receptors agonists and antagonists. The MTT test was conducted to identify oxidative and reductive enzymes and to specify appropriate dosage at four concentrations of dopamine and Cabergoline on MCF-7 and SKBR-3 cells. Immunofluorescence staining was done by the use of a mixed dye containing acridine orange and ethidiume bromide on account of differentiating between apoptotic and necrotic cells. Flow cytometry assay was an applied method to differentiate necrotic from apoptotic cells.Results:Sixty seven and thirty three percent of the patients were related to stages II and III, respectively. About sixty three percent of the patients expressed ER, while fifty seven percent expressed PR. Thirty seven percent of the patients were identified as HER-2 positive. All types of D2-receptors were expressed in PBMC of patients with breast cancer and healthy individuals. The expression of the whole dopamine receptor subtypes (DRD2-DRD4) was carried out on MCF-7 cell line. The results of RT-PCR confirmed the expression of DRD2 on SKBR-3 cells, whereas the other types of D2- receptors did not have an expression. The remarkable differences in gene expression rates between patients and healthy individuals were revealed in the result of the Real-time PCR analysis. The over expression in DRD2 and DRD4 genes of PBMCs was observed in the patients with breast cancer at stages II and III. The great amount of apoptosis and necrosis occurred after the treatment of MCF-7 cells by Cabergoline from 25 to 100 µmolL-1 concentrations.Conclusion:This study revealed the features of dopamine receptors associated with apoptosis induction in breast cancer cells. Moreover, the use of D2-agonist based on dopamine receptors expression in various breast tumoral cells could be promising as a new insight of complementary therapy in breast cancer.

Dinuclear Berenil-Platinum (II) Complexes as Modulators of Apoptosis in Human MCF-7 and MDA-MB231 Breast Cancer Cells

2014 ◽  
Vol 14 (8) ◽  
pp. 1179-1186 ◽  
Author(s):  
Gegotek Agnieszka ◽  
Ambrozewicz Ewa ◽  
Bielawska Anna ◽  
Bielawski Krzysztof ◽  
Cyunczyk Monika ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Mcf 7
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