Continuous Hypoxia and Glucose Metabolism, The Effects on Genes Expression in Mcf7 Breast Cancer Cell Line

2020 ◽  
Vol 20 ◽  
Author(s):  
Abdel Qader Al Bawab ◽  
Malek Zihlif ◽  
Yazan Jarrar ◽  
Ahmad Saleh
Keyword(s):  
Breast Cancer ◽  
Glucose Metabolism ◽  
Cancer Cells ◽  
Cell Line ◽  
Breast Cancer Cell Line ◽  
Warburg Effect ◽  
Cancer Cell Line ◽  
Mcf7 Cells ◽  
Genetic Changes ◽  
Genes Expression

Background: Hypoxia (deprived oxygen in tissues) may induce molecular and genetic changes in cancer cells. Objective: Investigating the genetic changes of glucose metabolism in breast cancer cell line (MCF7) after exposure to continuous hypoxia (10 and 20 cycles exposure of 72 hours continuously on a weekly basis). Method: Gene expression of MCF7 cells was evaluated using real-time polymerase chain reaction- array method. Furthermore, cell migration and wound healing assays were also applied. Results: It was found that 10 episodes of continuous hypoxia activated Warburg effect in MCF7 cells via the significant up-regulation of genes involved in glycolysis (ANOVA, p value < 0.05). The molecular changes were associated with the ability of MCF7 cells to divide and migrate. Interestingly, after 20 episodes of continuous hypoxia, the expression glycolysis mediated genes has dropped significantly (from 30 to 9 folds). This could be attributed to the adaptive ability of cancer cells. Conclusion: It is concluded that 10 hypoxic episodes increased the survival rate and the aggressiveness of MCF7 cells and induced Warburg effect by up-regulation of the glycolysis mediating genes expression.

scholarly journals Seeding of breast cancer cell line (MDA-MB-231LUC+) to the mandible induces overexpression of substance P and CGRP throughout the trigeminal ganglion and widespread peripheral sensory neuropathy throughout all three of its divisions

2021 ◽  
Vol 17 ◽  
pp. 174480692110240
Author(s):  
Silvia Gutierrez ◽  
James C Eisenach ◽  
M Danilo Boada
Keyword(s):  
Breast Cancer ◽  
Substance P ◽  
Cancer Cells ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Trigeminal Ganglion ◽  
Breast Cancer Cell Line ◽  
Cancer Cell Line ◽  
The Impact

Some types of cancer are commonly associated with intense pain even at the early stages of the disease. The mandible is particularly vulnerable to metastasis from breast cancer, and this process has been studied using a bioluminescent human breast cancer cell line (MDA-MB-231LUC+). Using this cell line and anatomic and neurophysiologic methods in the trigeminal ganglion (TG), we examined the impact of cancer seeding in the mandible on behavioral evidence of hypersensitivity and on trigeminal sensory neurons. Growth of cancer cells seeded to the mandible after arterial injection of the breast cancer cell line in Foxn1 animals (allogeneic model) induced behavioral hypersensitivity to mechanical stimulation of the whisker pad and desensitization of tactile and sensitization of nociceptive mechanically sensitive afferents. These changes were not restricted to the site of metastasis but extended to sensory afferents in all three divisions of the TG, accompanied by widespread overexpression of substance P and CGRP in neurons through the ganglion. Subcutaneous injection of supernatant from the MDA-MB-231LUC+ cell culture in normal animals mimicked some of the changes in mechanically responsive afferents observed with mandibular metastasis. We conclude that released products from these cancer cells in the mandible are critical for the development of cancer-induced pain and that the overall response of the system greatly surpasses these local effects, consistent with the widespread distribution of pain in patients. The mechanisms of neuronal plasticity likely occur in the TG itself and are not restricted to afferents exposed to the metastatic cancer microenvironment.

Dexamethasone Reduces Cell Adhesion and Migration of T47D Breast Cancer Cell Line

2020 ◽  
Vol 21 ◽  
Author(s):  
Leila Mohammadi ◽  
Bashir Mosayyebi ◽  
Mahsa Imani ◽  
Mohammad Rahmati
Keyword(s):  
Breast Cancer ◽  
Cell Adhesion ◽  
Cancer Cells ◽  
Cell Line ◽  
Breast Cancer Cell Line ◽  
Cell Adhesion Molecules ◽  
Cancer Cell Line ◽  
T47d Breast Cancer Cell ◽  
Cell Adhesion And Migration ◽  
And Migration

Background: Aberrant expression of cell adhesion molecules and matrix metalloproteinase (MMPs) plays a pivotal role in tumor biological processes including progression and metastasis of cancer cells. Targeting these processes and detailed understanding of their underlying molecular mechanism is an essential step in cancer treatment. Dexamethasone (Dex) is a type of synthetic corticosteroid hormone used as adjuvant therapy in combination with current cancer treatments such as chemotherapy in order to alleviate its side effects like acute nausea and vomiting. Recent evidences have suggested that Dex may have antitumor characteristics. Objective: Dex affects the migration and adhesion of T47D breast cancer cells as well as cell adhesion molecules e.g., cadherin and integrin, and MMPs by regulating the expression levels of associated genes. Methods: In this study, we evaluated the cytotoxicity of Dex on the T47D breast cancer cell line through MTT assay. Cell adhesion assay and wound healing assay were performed to determine the impact of Dex on cell adhesion and cell migration, respectively. Moreover, real-time PCR was used to measure the levels of α and β integrin, E-cadherin, N-cadherin, MMP-2, and MMP-9. Results: Dex decreased the viability of T47D cells in a time and dose-dependent manner. Cell adhesion and migration of T47D cells were reduced upon Dex treatment. The expression of α and β integrin, E-cadherin, N-cadherin, MMP-2, and MMP-9 were altered in response to the Dex treatment. Conclusion: Our findings demonstrated that Dex may have a role in the prevention of metastasis in this cell line.

scholarly journals Quercetin Enhances the Suppressive Effects of Doxorubicin on the Migration of MDA-MB-231 Breast Cancer Cell Line

2021 ◽  
Vol 14 (11) ◽  
Author(s):  
Mohammadreza Roshanazadeh ◽  
Hossein Babaahmadi Rezaei ◽  
Mojtaba Rashidi
Keyword(s):  
Breast Cancer ◽  
Side Effects ◽  
Cancer Cells ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Cancer Cell Line ◽  
Anticancer Activities ◽  
And Migration

Background: Cancer cell metastasis is facilitated by matrix-metalloproteinases through degradation of extracellular matrix (ECM) proteins and is a major cause of mortality. One of the most common remedies for cancer is chemotherapy, which has many side effects. Therefore, it seems necessary to find a way to reduce the side effects of these drugs while maintaining their anticancer effects. Quercetin (que) is a natural substance that has been reported to have anticancer activities. Objectives: This study aims at evaluating the effect of que in combination with doxorubicin (dox) on the migration of the MDA-MB-231 breast cancer cell line. Methods: The effects of que and dox on cell viability in 24h and 48 h was assessed by MTT assay. Also, the effects of the same drugs on the cancer cells migration were evaluated, using the wound healing assay. Lastly, the effects of que and dox were assessed on the expression of MMP-2 and MMP-9 genes. Results: The combination of 50 µM of que with 32 nM of dox was selected by CI comparison. The viability and migration of cancer cells and the gelatinases genes expression were decreased after treatment with individual drugs. The migration and the expression of MMP-2 and MMP-9 genes after treatment with the combination of que and dox was significantly reduced compared to the treatment with que and dox alone. Conclusions: Que inhibits the viability and migration of MDA-MB-231 cancer cells and synergistically enhances the effects of dox on the survival and migration of these cells. Hence, we propose this drug combination as a path for further research on breast cancer therapy.

A Novel Naphthotriazolyl-4-oxoquinoline Derivative that Selectively Controls Breast Cancer Cells Survival Through the Induction of Apoptosis

2018 ◽  
Vol 18 (17) ◽  
pp. 1465-1474 ◽  
Author(s):  
Jessica R. Branco ◽  
Vanessa G. Oliveira ◽  
Amanda M. Esteves ◽  
Ingrid C. Chipoline ◽  
Miriam F.O. Lima ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cell Line ◽  
Breast Cancer Cell Line ◽  
Human Breast Cancer ◽  
Breast Cancer Cells ◽  
Cancer Cell Line ◽  
Human Breast Cancer Cell ◽  
Human Breast ◽  
Mcf 7

Background: Breast cancer is a major cause of death among women worldwide. Treatment for breast cancer involves the surgical removal of cancer tissue, followed by chemotherapy. Although the treatment is efficient, especially when the cancer is detected early, recurrence is common and is often resistant to the previous treatment. Therefore, a constant search for efficient and novel drugs for the treatment of breast cancer is mandatory. Recently, triazole derivatives have shown promising effects against different types of cancer, revealing these molecules as putative anticancer drugs. Experimental: We have synthesized a series of naphthotriazolyl-4-oxoquinoline derivatives and tested their activity against a human breast cancer cell line. Among the compounds tested, we identified a molecule that killed the human breast cancer cell line MCF-7 with minimal effects on its noncancer counterpart, MCF10A. This effect was seen after 24 hours of treatment and persisted for additional 24 hours after treatment withdrawal. After 1 hour of treatment, the compound, here named 12c, promoted a decrease in cell glucose consumption and lactate production. Moreover, the cells treated with 12c for 1 hour showed diminished intracellular ATP levels with unaltered mitochondrial potential and increased reactive oxygen species production. Additionally, apoptosis was triggered after treatment with the drug for 1 hour. All of these effects are only observed with MCF-7 cells, and not MCF10A. These data show that 12c has selective activity against breast cancer cells and is a potential candidate for a novel anticancer drug. Results and Conclusion: The naphthotriazolyl-4-oxoquinoline derivatives were obtained in good to moderate yields, and one of them, 12c, exhibited strong and selective antitumor properties. The antitumor mechanism involves inhibition of glycolysis, diminished intracellular ATP levels, induction of ROS production and triggering of apoptosis. These effects are all selective for cancer cells, since noncancer cells are unaffected, and these effects can only be attributed to the whole molecule, as different pharmacophoric groups did not reproduce these effects.

Crispene E, a cis-clerodane diterpene inhibits STAT3 dimerization in breast cancer cells

2015 ◽  
Vol 13 (13) ◽  
pp. 3882-3886 ◽  
Author(s):  
Julia Mantaj ◽  
S. M. Abdur Rahman ◽  
Bishwajit Bokshi ◽  
Choudhury M. Hasan ◽  
Paul J. M. Jackson ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cell Line ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Breast Cancer Cells ◽  
Target Genes ◽  
Cancer Cell Line ◽  
Significant Toxicity ◽  
A Cell

Crispene E inhibited STAT3 dimerization in a cell-free fluorescent polarization assay and was found to have significant toxicity against STAT3-dependent MDA-MB 231 breast cancer cell line and selectively inhibited the expression of STAT3 and STAT3 target genes.

scholarly journals Gene Expression Profiling to Delineate the Anticancer Potential of a New Alkaloid Isopicrinine From Rhazya stricta

2020 ◽  
Vol 19 ◽  
pp. 153473542092071
Author(s):  
Nahid H. Hajrah ◽  
Waseem Mohammed Abdul ◽  
Zainab H. Abdul-Hameed ◽  
Walied M. Alarif ◽  
Nouf Saeed A. Al-Abbas ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Cancer Cell Line ◽  
Sublethal Dose ◽  
Mcf7 Cells ◽  
Rhazya Stricta

Background: Rhazya stricta has been used as a folkloric medicinal herb for treating various diseases such as diabetes, inflammatory disorders, and sore throat. Several studies have revealed the potential of this plant as an important source of phytochemicals with anticancer properties. Objective: The present study was designed to isolate a novel anticancer compound from Rhazya stricta and elucidate its mechanism of action using genomics approach. Methods: Rhazya stricta leaves extract was prepared, and several alkaloids were purified and characterized. These alkaloids were screened for their anticancer potential. One of the alkaloids, termed as isopicrinine, showed efficient cytotoxicity against MCF7 breast cancer cell line and was selected for further analysis. RNA-Seq transcription profiling was conducted to identify the affected genes and cellular pathways in MCF7 cells after treatment with isopicrinine alkaloid. Results: In vitro studies revealed that newly identified isopicrinine alkaloid possess efficient anticancer activity. Exposure of MCF7 cells with isopicrinine affected the expression of various genes involved in p53 signaling pathway. One of the crucial proapoptotic genes, significantly upregulated in MCF7 after exposure to alkaloid, was PUMA (p53 upregulated modulator of apoptosis), which is involved in p53-dependent and -independent apoptosis. Moreover, exposure of sublethal dose of isopicrinine alkaloid in breast cancer cell line led to the downregulation of survivin, which is involved in negative regulation of apoptosis. Besides, several genes involved in mitosis and cell proliferation were significantly downregulated. Conclusion: In this article, we report the determination of a new alkaloid isopicrinine from the aerial parts of Rhazya stricta with anticancer property. This compound has the potential to be developed as a drug for curing cancer.

scholarly journals Angiotensin-(1-7) Changes Apoptosis-Related Genes Expression in Human Breast Cancer Cell Line T47D

2014 ◽  
Vol 05 (14) ◽  
pp. 1412-1422
Author(s):  
Cheryl Alecrim Santos ◽  
Gabriela Soares da Silva Brito ◽  
Silvana Aparecida Alves Corrêa de Noronha ◽  
Samuel Marcos Ribeiro de Noronha ◽  
Suma Imura Shimuta ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Human Breast Cancer ◽  
Cancer Cell Line ◽  
Human Breast Cancer Cell ◽  
Human Breast ◽  
Genes Expression

scholarly journals The Cytotoxicity of Doxorubicin Can Be Accelerated by a Combination of Hyperthermia and 5-Aminolevulinic Acid

Antioxidants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1531
Author(s):  
Hiromi Kurokawa ◽  
Hirofumi Matsui
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Aminolevulinic Acid ◽  
Cancer Cell Line ◽  
Efflux Transporter ◽  
Normal Cells

Chemotherapy is cytotoxic to various cancer cells and as well as normal cells. Thus, treatments that demonstrate selective cytotoxicity for cancer cells are desired. The combination of chemotherapy and other cancer therapies can show synergic cytotoxicity, which may be a clue to the nature of the involved cancer cellar-specific damage. We previously reported a phenomenon whereby mitochondrial reactive oxygen species (mitROS) regulate the expression transporters involved in anticancer drug transport and mitROS production is increased by hyperthermia. Moreover, the uptake of 5-aminolevulinic acid (ALA) was enhanced by the increase in mitROS production. In this study, we investigated whether the combination of hyperthermia and ALA can enhance the cytotoxicity of doxorubicin. MitROS production and ALA-derived porphyrin accumulation by hyperthermia (HT) were increased in a murine breast cancer cell line. The expression of solute carrier 15A1 (SLC15A1) upregulated and an ATP-binding cassette subfamily G member 2 (ABCG2) downregulated by HT. Since SLC15A1 is an accumulating transporter for ALA, while ABCG2 is a porphyrin efflux transporter, porphyrin accumulation was enhanced. ABCG2 is also a doxorubicin efflux transporter. Thus, ALA treatment accelerates the intracellular concentration of porphyrin, which acts as a competitive inhibitor of doxorubicin. Indeed, the amount of intracellular doxorubicin was increased by a combination of HT and ALA. The cytotoxicity of doxorubicin was also enhanced. This enhancement was observed in the human breast cancer cell line while it was not seen in normal cells. The combination of HT and ALA treatment can enhance the cancer-specific cytotoxicity of doxorubicin.

Investigation of the anti-cancer effects of free and PLGA-PAA encapsulated Hydroxytyrosol on the MCF-7 breast cancer cell line

2020 ◽  
Vol 20 ◽  
Author(s):  
Maryam Safi ◽  
Habib Onsori ◽  
Mohammad Rahmati
Keyword(s):  
Breast Cancer ◽  
Cyclin D1 ◽  
Cancer Cells ◽  
Cell Line ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Cancer Cell Line ◽  
Anti Cancer ◽  
Mcf 7

Purpose: Breast cancer is the most frequent cancer among women and the most important cause of death. Surgery and chemotherapy are the common treatment of the breast cancer, but increasing drug resistance has created many challenges in its treatment. The present study aimed to investigate the anti-cancer function of free and nano-encapsulated hydroxytyrosol on the MCF-7 breast cancer cell line. Methods: The poly lactide-co-glycolide-co-polyacrylic acid (PLGA-co-PAA) nano-encapsulated Hydroxytyrosol was synthesized, and the MTT assay was performed to evaluate the anti-proliferative and anti-tumor effects of both free and nanoencapsulated Hydroxytyrosol. After the extraction of RNA from the treated and control cancer cells, cDNA synthesis was performed and the expression of P21, P27, and Cyclin D1 genes were evaluated by Real-Time PCR. Results: The results of the study showed that free (12 ppm and 72 hours) and nano-encapsulate (10 ppm and 24 hours) hydroxytyrosol resulted in 50% death (IC50) of the cancer cells and increased by increasing the concentration and time. Also, free and nano-encapsulated hydroxytyrosol increased the expression of P21 and P27 genes and reduced the expression of Cyclin D1 in breast cancer cells. In general, the nano-encapsulated hydroxytyrosol showed more anticancer function than the free hydroxytyrosol. Conclusion: The present study illustrated that the hydroxytyrosol could lead to the cell death in MCF-7 breast cancer by regulating the cell cycle. Also, the nano-encapsulation of Hydroxytyrosol enhanced the Hydroxytyrosol anticancer function by PLGA-co-PAA. However, for more accurate results, further studies on animal models are necessary.

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