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Erdogan MA, Yılmaz OA. Rottlerin and genistein inhibit neuroblastoma cell proliferation and invasion through EF2K suppression and related protein pathways. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:2481-2500. [PMID: 37083712 DOI: 10.1007/s00210-023-02473-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 03/21/2023] [Indexed: 04/22/2023]
Abstract
Neuroblastoma is one of the most common solid tumors in children younger than 1 year of age, with poor prognosis and survival rates. Therefore, novel molecular targets and therapeutic strategies are needed to prolong patient survival. For this purpose, we investigated the effects of rottlerin and genistein separately and in combination on neuroblastoma cells (SH-SY5Y, Kelly). First, the effects of rottlerin and genistein were investigated on cell proliferation. Different rottlerin (1-50 µM) and genistein (5-150 µM) doses were used as experimental groups compared to the control (DMSO/vehicle). The IC50 dose was found to be 5 µM for rottlerin and 30 µM for genistein (P < 0.0001). Other analyses, such as colony formation assays, annexin V/propidium iodide staining, matrigel invasion assays, and Western blot analysis, were performed with these doses and their combinations. To assess statistical significance, statistical analysis was conducted using the one-way ANOVA with the post hoc Tukey test. Our results showed that IC50 doses of rottlerin and genistein induced a significant reduction in cell proliferation, colony formation, and invasion in neuroblastoma cells (P < 0.0001). The combination of these doses increased the levels of inhibition of cell proliferation and invasion while decreasing the level of apoptosis (P 0.0001). Furthermore, these agents caused G1-cell cycle arrest in these cells. Our western blot data showed that rottlerin and genistein treatments markedly inhibit elongation factor 2 kinase (EF2K) and other pro-tumorigenic, metastatic proteins in neuroblastoma cells. These agents probably showed their anti-proliferative, anti-metastatic, and pro-apoptotic effects through EF2K downregulation. Our results suggested that rottlerin and genistein have inhibitory effects on cancer cell proliferation, invasion, and cell cycle and induce apoptosis in both cell lines. Combined treatment with rottlerin and genistein may be a viable approach and beneficial to neuroblastoma patients as the combined effect significantly suppresses the above-mentioned pathways.
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Affiliation(s)
- Mumin Alper Erdogan
- Department of Physiology, Faculty of Medicine, Izmir Katip Celebi University, Izmir, Turkey.
- Faculty of Medicine, Department of Physiology, Ege University, Izmir, Turkey.
| | - Ozlem Alkan Yılmaz
- Faculty of Medicine, Department of Physiology, Ege University, Izmir, Turkey
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2
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Supabphol S, Seubwai W, Wongkham S, Saengboonmee C. High glucose: an emerging association between diabetes mellitus and cancer progression. J Mol Med (Berl) 2021; 99:1175-1193. [PMID: 34036430 DOI: 10.1007/s00109-021-02096-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 04/16/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022]
Abstract
The association of cancer and diabetes mellitus (DM) has been studied for decades. Hyperglycemia and the imbalance of hormones are factors that contribute to the molecular link between DM and carcinogenesis and cancer progression. Hyperglycemia alone or in combination with hyperinsulinemia are key factors that promote cancer aggressiveness. Many preclinical studies suggest that high glucose induces abnormal energy metabolism and aggressive cancer via several mechanisms. As evidenced by clinical studies, hyperglycemia is associated with poor clinical outcomes in patients who have comorbid DM. The prognoses of cancer patients with DM are improved when their plasma glucose levels are controlled. This suggests that high glucose level maybe be involved in the molecular mechanism that causes the link between DM and cancer and may also be useful for prognosis of cancer progression. This review comprehensively summarizes the evidence from recent pre-clinical and clinical studies of the impact of hyperglycemia on cancer advancement as well as the underlying molecular mechanism for this impact. Awareness among clinicians of the association between hyperglycemia or DM and cancer progression may improve cancer treatment outcome in patients who have DM.
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Affiliation(s)
- Suangson Supabphol
- The Center of Excellence in Systems Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wunchana Seubwai
- Department of Forensic Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand.,Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sopit Wongkham
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand.,Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Charupong Saengboonmee
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
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3
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Akhlaghipour I, Bina AR, Abbaszadegan MR, Moghbeli M. Methylation as a critical epigenetic process during tumor progressions among Iranian population: an overview. Genes Environ 2021; 43:14. [PMID: 33883026 PMCID: PMC8059047 DOI: 10.1186/s41021-021-00187-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/07/2021] [Indexed: 11/10/2022] Open
Abstract
Cancer is one of the main health challenges and leading causes of deaths in the world. Various environmental and genetic risk factors are associated with tumorigenesis. Epigenetic deregulations are also important risk factors during tumor progression which are reversible transcriptional alterations without any genomic changes. Various mechanisms are involved in epigenetic regulations such as DNA methylation, chromatin modifications, and noncoding RNAs. Cancer incidence and mortality have a growing trend during last decades among Iranian population which are significantly related to the late diagnosis. Therefore, it is required to prepare efficient molecular diagnostic panels for the early detection of cancer in this population. Promoter hyper methylation is frequently observed as an inhibitory molecular mechanism in various genes associated with DNA repair, cell cycle regulation, and apoptosis during tumor progression. Since aberrant promoter methylations have critical roles in early stages of neoplastic transformations, in present review we have summarized all of the aberrant methylations which have been reported during tumor progression among Iranian cancer patients. Aberrant promoter methylations are targetable and prepare novel therapeutic options for the personalized medicine in cancer patients. This review paves the way to introduce a non-invasive methylation specific panel of diagnostic markers for the early detection of cancer among Iranians.
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Affiliation(s)
- Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Reza Bina
- Student Research Committee, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | | | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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Bayar İ, Bildik A. Investigation of glucose catabolism in hypoxic Mcf 7 breast cancer culture. Cytotechnology 2021; 73:217-232. [PMID: 33927477 DOI: 10.1007/s10616-021-00459-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/05/2021] [Indexed: 10/22/2022] Open
Abstract
Hypoxia plays an important role in tumor phenotype and progression and alters glycolysis, with changes in signaling pathways that develop in response to hypoxia. In this study, the effects of oxygen (normoxia/hypoxia) and of glucose levels on the glucose metabolism was investigated in MCF-7 cancer cells. Under either normoxia or hypoxia conditions, the cells were exposed to glucose at different concentrations (0, 5.5, 15 or 55 mM) for either 3, 6, 12, 24 or 48 h. In all groups, cell viability, levels of key enzymes reflecting glycolytic metabolism in cell lysates, glucose consumed in the medium and extracellular lactate levels and wound closure percentages were determined. In hypoxic cells, intracellular consumption of glucose, and extracellular lactate levels due to increased glucose concentration were observed to be higher (compared to normoxia) and as a result of prolonged exposure to hypoxia, cells were observed to develop resistance to the prolonged exposure to hypoxia. The number of glycolytic enzymes obtained at different levels proved that cells had different potential capacities and changing mechanisms for the metabolic needs of the cell depending on the glucose amount in the medium and time in adapting to the oxygen tension. This study showed that there was an important interaction between hypoxia and glucose metabolism in general, and it was concluded that metabolic processes activated by hypoxia could offer new therapeutic targets.
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Affiliation(s)
- İrem Bayar
- Department of Biochemistry, Selcuk University Faculty of Veterinary, Konya, Turkey
| | - Ayşegül Bildik
- Department of Biochemistry, Adnan Menderes University Faculty of Veterinary, Aydın, Turkey
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Ramteke P, Deb A, Shepal V, Bhat MK. Hyperglycemia Associated Metabolic and Molecular Alterations in Cancer Risk, Progression, Treatment, and Mortality. Cancers (Basel) 2019; 11:E1402. [PMID: 31546918 PMCID: PMC6770430 DOI: 10.3390/cancers11091402] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 12/12/2022] Open
Abstract
Cancer and diabetes are amongst the leading causes of deaths worldwide. There is an alarming rise in cancer incidences and mortality, with approximately 18.1 million new cases and 9.6 million deaths in 2018. A major contributory but neglected factor for risk of neoplastic transformation is hyperglycemia. Epidemiologically too, lifestyle patterns resulting in high blood glucose level, with or without the role of insulin, are more often correlated with cancer risk, progression, and mortality. The two conditions recurrently exist in comorbidity, and their interplay has rendered treatment regimens more challenging by restricting the choice of drugs, affecting surgical consequences, and having associated fatal complications. Limited comprehensive literature is available on their correlation, and a lack of clarity in understanding in such comorbid conditions contributes to higher mortality rates. Hence, a critical analysis of the elements responsible for enhanced mortality due to hyperglycemia-cancer concomitance is warranted. Given the lifestyle changes in the human population, increasing metabolic disorders, and glucose addiction of cancer cells, hyperglycemia related complications in cancer underline the necessity for further in-depth investigations. This review, therefore, attempts to shed light upon hyperglycemia associated factors in the risk, progression, mortality, and treatment of cancer to highlight important mechanisms and potential therapeutic targets.
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Affiliation(s)
- Pranay Ramteke
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, India.
| | - Ankita Deb
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, India.
| | - Varsha Shepal
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, India.
| | - Manoj Kumar Bhat
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, India.
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Mazzio EA, Soliman KFA. Whole-transcriptomic Profile of SK-MEL-3 Melanoma Cells Treated with the Histone Deacetylase Inhibitor: Trichostatin A. Cancer Genomics Proteomics 2018; 15:349-364. [PMID: 30194076 DOI: 10.21873/cgp.20094] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/09/2018] [Accepted: 07/16/2018] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Malignant melanoma cells can rapidly acquire phenotypic properties making them resistant to radiation and mainline chemotherapies such as decarbonize or kinase inhibitors that target RAS-proto-oncogene independent auto-activated mitogen-activated protein kinases (MAPK)/through dual specificity mitogen-activated protein kinase (MEK). Both drug resistance and inherent transition from melanocytic nevi to malignant melanoma involve the overexpression of histone deacetylases (HDACs) and a B-Raf proto-oncogene (BRAF) mutation. MATERIALS AND METHODS In this work, the effects of an HDAC class I and II inhibitor trichostatin A (TSA) on the whole transcriptome of SK-MEL-3 cells carrying a BRAF mutation was examined. RESULTS The data obtained show that TSA was an extremely potent HDAC inhibitor within SK-MEL-3 nuclear lysates, where TSA was then optimized for appropriate sub-lethal concentrations for in vitro testing. The whole-transcriptome profile shows a basic phenotype dominance in the SK-MEL-3 cell line for i) synthesis of melanin, ii) phagosome acidification, iii) ATP hydrolysis-coupled proton pumps and iv) iron transport systems. While TSA did not affect the aforementioned major systems, it evoked a dramatic change to the transcriptome: reflected by a down-regulation of 810 transcripts and up-regulation of 833, with fold-change from -15.27 to +31.1 FC (p<0.00001). Largest differentials were found for the following transcripts: Up-regulated: Tetraspanin 13 (TSPAN13), serpin family i member 1 (SERPINI1), ATPase Na+/K+ transporting subunit beta 2 (ATP1B2), nicotinamide nucleotide adenylyl transferase 2 (NMNAT2), platelet-derived growth factor receptor-like (PDGFRL), cytochrome P450 family 1 subfamily A member 1 (CYP1A1), prostate androgen-regulated mucin-like protein 1 (PARM1), secretogranin II (SCG2), SYT11 (synaptotagmin 11), rhophilin associated tail protein 1 like (ROPN1L); down-regulated: polypeptide N-acetylgalactosaminyltransferase 3 (GALNT3), carbonic anhydrase 14 (CAXIV), BCL2-related protein A1 (BCL2A1), protein kinase C delta (PRKCD), transient receptor potential cation channel subfamily M member 1 (TRPM1), ubiquitin associated protein 1 like (UBAP1L), glutathione peroxidase 8 (GPX8), interleukin 16 (IL16), tumor protein p53 (TP53), and serpin family H member 1 (SERPINH1). There was no change to any of the HDAC transcripts (class I, II and IV), the sirtuin HDAC family (1-6) or the BRAF proto-oncogene v 599 transcripts. However, the data showed that TSA down-regulated influential transcripts that drive the BRAF-extracellular signal-regulated kinase (ERK)1/2 oncogenic pathway (namely PRKCD and MYC proto-oncogene which negatively affected the cell-cycle distribution. Mitotic inhibition was corroborated by functional pathway analysis and flow cytometry confirming halt at the G2 phase, occurring in the absence of toxicity. CONCLUSION TSA does not alter HDAC transcripts nor BRAF itself, but down-regulates critical components of the MAPK/MEK/BRAF oncogenic pathway, initiating a mitotic arrest.
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Affiliation(s)
- Elizabeth A Mazzio
- College of Pharmacy and Pharmaceutical Sciences, Florida A and M University, Tallahassee, FL, U.S.A
| | - Karam F A Soliman
- College of Pharmacy and Pharmaceutical Sciences, Florida A and M University, Tallahassee, FL, U.S.A.
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Sun S, Wu Q, Song J, Sun S. Protein kinase C δ-dependent regulation of Ubiquitin-proteasome system function in breast cancer. Cancer Biomark 2018; 21:1-9. [PMID: 29036789 DOI: 10.3233/cbm-170451] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Besides the crucial role of hyperinsulinemia in the development of breast cancer with Type 2 diabetes mellitus (T2DM), it has been shown that hyperglycemia could contribute to promote cancer progression. A remarkable association within hyperglycemia, PKCδ and Ubiquitin-proteasome system (UPS) has been reported, suggesting that PKCδ may mediate high glucose-induced UPS activation in breast cancer cells. Although the independent effects of PKCδ or UPS on breast cancer and T2DM are increasingly supported by experimental evidence, the complex interactional link between PKCδ and UPS is still unclear. Hence, we focus on the relationship between PKCδ and UPS in breast cancer with T2DM. We hypothesize that PKCδ may have the function to regulate the activity of UPS. Further, we speculate that PKCδ combine with proteasome α2 promoter, that indicate PKCδ regulate the function of UPS by change the composition of proteasome. Therefore, we surmise that PKCδ mediated high glucose-induced UPS activation in breast cancer cells, and specific PKCδ inhibitor rottlerin significantly suppressed elevated glucose induced the activity of UPS. We hope that our paper will stimulate further studies the relationship between PKCδ and UPS, and a new targeted therapy and early medical intervention for PKCδ could be a useful option for breast cancer cases complicated with T2DM or hyperglycemia.
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Affiliation(s)
- Si Sun
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Qi Wu
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Junlong Song
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Shengrong Sun
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Hyperglycemia and aberrant O-GlcNAcylation: contributions to tumor progression. J Bioenerg Biomembr 2018; 50:175-187. [DOI: 10.1007/s10863-017-9740-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 12/26/2017] [Indexed: 12/17/2022]
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Viedma-Rodríguez R, Martínez-Hernández MG, Flores-López LA, Baiza-Gutman LA. Epsilon-aminocaproic acid prevents high glucose and insulin induced-invasiveness in MDA-MB-231 breast cancer cells, modulating the plasminogen activator system. Mol Cell Biochem 2017; 437:65-80. [PMID: 28612231 DOI: 10.1007/s11010-017-3096-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 06/08/2017] [Indexed: 01/01/2023]
Abstract
Obesity and type II diabetes mellitus have contributed to the increase of breast cancer incidence worldwide. High glucose concentration promotes the proliferation of metastatic cells, favoring the activation of the plasminogen/plasmin system, thus contributing to tumor progression. The efficient formation of plasmin is dependent on the binding of plasminogen to the cell surface. We studied the effect of ε-aminocaproic acid (EACA), an inhibitor of the binding of plasminogen to cell surface, on proliferation, migration, invasion, epithelial-mesenchymal transition (EMT), and plasminogen activation system, in metastatic MDA-MB-231 breast cancer cells grown in a high glucose microenvironment and treated with insulin. MDA-MB-231 cells were treated with EACA 12.5 mmol/L under high glucose 30 mmol/L (HG) and high glucose and insulin 80 nmol/L (HG-I) conditions, evaluating: cell population growth, % of viability, migratory, and invasive abilities, as well as the expression of uPA, its receptor (uPAR), and its inhibitor (PAI-1), by real-time reverse transcription-polymerase chain reaction (RT-PCR) and Western blot, MMP-2 and MMP-9 mRNAs were evaluated by RT-PCR. Markers of EMT were evaluated by Western blot. Additionally, the presence of active uPA was studied by gel zymography, using casein-plasminogen as substrates. EACA prevented the increase in cell population, migration and invasion induced by HG and insulin, which was associated with the inhibition of EMT and the attenuation of HG- and insulin-dependent expression of uPA, uPAR, PAI-1, MMP-2, MMP-9, α-enolase (ENO A), and HCAM. The interaction of plasminogen to the cell surface and plasmin formation are mediators of the prometastasic action of hyperglycemia and insulin, potentially, EACA can be employed in the prevention and as adjuvant treatment of breast tumorigenesis promoted by hyperglycemia and insulin.
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Affiliation(s)
- Rubí Viedma-Rodríguez
- Unidad de Morfofisiología, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Avenida de los Barrios 1, Los Reyes Iztacala, 54090, Tlalnepantla, Estado de México, Mexico
| | - María Guadalupe Martínez-Hernández
- Unidad de Morfofisiología, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Avenida de los Barrios 1, Los Reyes Iztacala, 54090, Tlalnepantla, Estado de México, Mexico
| | - Luis Antonio Flores-López
- Unidad de Morfofisiología, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Avenida de los Barrios 1, Los Reyes Iztacala, 54090, Tlalnepantla, Estado de México, Mexico
| | - Luis Arturo Baiza-Gutman
- Unidad de Morfofisiología, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Avenida de los Barrios 1, Los Reyes Iztacala, 54090, Tlalnepantla, Estado de México, Mexico.
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Wang L, Ma H, Zhu L, Ma L, Cao L, Wei H, Xu J. Screening for the optimal gene and functional gene sets related to breast cancer using differential co-expression and differential expression analysis. Cancer Biomark 2016; 17:463-471. [PMID: 27802197 DOI: 10.3233/cbm-160663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate novel gene sets related to breast cancer (BC) using differential co-expression and differential expression (DECODE). METHODS T statistics was used to quantify the degree of DE of each gene, and then Z was adopted to quantify the correlation difference between expression levels of two genes. Two optimal thresholds for defining substantial change in DE and DC were selected for each gene using chi-square maximization, and the corresponding gene was defined as the optimal gene. Based on the optimal thresholds, genes were categorized into four partitions with either high or low DC and DE characteristics. Finally, we evaluated the functional relevance of a gene partition with high DE and high DC, and the gene set with best association was considered as the optimal functional gene set. RESULTS The optimal thresholds for DC and DE were respective 2.254 and 1.616, and the optimal gene was UBE2Q2L. Based on the optimal thresholds, genes were divided into four partitions including HDE-HDC (875 genes), HED-LDC (8038 genes), LDE-HDC (678 genes), and LDE-LDC (10516 genes). The best associated gene set was ``fatty acid catabolic process'' with 34 HDC and HDE partitions. Among these partitions, UBE2Q2L attained the highest minimum FI gain of 18.973. CONCLUSION UBE2Q2L and fatty acid catabolic process might be potentially useful signatures in diagnostic purposes for BC.
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Affiliation(s)
- Lei Wang
- Department of Science and Education, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Hong Ma
- Pharmacy Intravenous Admixture Service, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Lixia Zhu
- Department of Neurosurgery, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Liping Ma
- Department of Science and Education, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Lanting Cao
- Department of Cardiology, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Hui Wei
- Department of General Surgery, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
| | - Jumei Xu
- Department of General Surgery, The People's Hospital of Zhangqiu, Zhangqiu, Shandong, China
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Fahmidehkar MA, Shafiee SM, Eftekhar E, Mahbudi L, Seghatoleslam A. Induction of cell proliferation, clonogenicity and cell accumulation in S phase as a consequence of human UBE2Q1 overexpression. Oncol Lett 2016; 12:2169-2174. [PMID: 27602158 DOI: 10.3892/ol.2016.4860] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 06/17/2016] [Indexed: 02/07/2023] Open
Abstract
Ubiquitination is an important cellular mechanism with a pivotal role in the degradation of abnormal or short-lived proteins and the regulation of cell cycle and cell growth. The ubiquitin-proteasome pathway is altered in multiple types of human malignancies, including colorectal cancer (CRC). The alteration in the expression of the novel human gene ubiquitin-conjugating enzyme E2 Q1 (UBE2Q1), as a putative member of the E2 ubiquitin-conjugating enzyme family, has been reported in several malignancies, including carcinoma of the breast, hepatocellular and colorectal cancer, and pediatric acute lymphoblastic leukemia. In the present study, the effect of UBE2Q1 overexpression on cell growth, clonogenicity, motility and cell cycle was investigated in a CRC cell line. The UBE2Q1 gene was cloned in the pCMV6-AN-GFP expression vector. A series of stable transfectants of SW1116 cells overexpressing UBE2Q1 protein were established and confirmed by fluorescence microscopy and western blotting. Using these cells, MTT assay was performed to evaluate cell growth and proliferation, while crystal violet staining was used for clonogenicity assay. Cell cycle analysis was also performed to survey the ratio of cells accumulated in different phases of the cell cycle upon transfection. The motility of these cells was also studied using wound healing assay. UBE2Q1 transfectants exhibited a faster growth in cell culture, increased colony formation capacity and enhanced motility compared with control non-transfected cells and cells transfected with empty vector (mock-transfected cells). UBE2Q1 overexpression also resulted in a significant decrease in the number of cells accumulated in the G0/G1 phase of the cell cycle. The present findings suggest that UBE2Q1 may function as an oncogene that induces proliferation of cancer cells, and could be a novel diagnostic tool and a potential therapeutic target for CRC.
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Affiliation(s)
- Mohammad Ali Fahmidehkar
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71348-45794, Iran
| | - Sayed Mohammad Shafiee
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71348-45794, Iran
| | - Ebrahim Eftekhar
- Food and Cosmetic Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas 79158-73665, Iran
| | - Laleh Mahbudi
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71348-45794, Iran
| | - Atefeh Seghatoleslam
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71348-45794, Iran; Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
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Zhang D, Zhang Y, Ye M, Ding Y, Tang Z, Li M, Zhou Y, Wang C. Interference with Akt signaling pathway contributes curcumin-induced adipocyte insulin resistance. Mol Cell Endocrinol 2016; 429:1-9. [PMID: 27113027 DOI: 10.1016/j.mce.2016.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/28/2016] [Accepted: 04/21/2016] [Indexed: 11/16/2022]
Abstract
Previous study has shown that curcumin directly or indirectly suppresses insulin signaling in 3T3-L1 adipocytes. However, the underlying mechanism remains unclear. Here we experimentally demonstrate that curcumin inhibited the ubiquitin-proteasome system (UPS) function, activated autophagy, and reduced protein levels of protein kinase B (Akt) in a dose- and time-dependent manner in 3T3-L1 adipocytes, accompanied with attenuation of insulin-stimulated Akt phosphorylation, plasma membrane translocation of glucose transporter type 4 (GLUT4), and glucose uptake. These in vitro inhibitory effects of curcumin on Akt protein expression and insulin action were reversed by pharmacological and genetic inhibition of autophagy but not by inhibition of the UPS and caspases. In addition, Akt reduction in adipose tissues of mice treated with curcumin could be recovered by administration of autophagy inhibitor bafilomycin A1 (BFA). This new finding provides a novel mechanism by which curcumin induces insulin resistance in adipocytes.
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Affiliation(s)
- Deling Zhang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Yemin Zhang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Mao Ye
- Department of Endocrinology, The Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, China
| | - Youming Ding
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan 430060, China
| | - Zhao Tang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Mingxin Li
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Yu Zhou
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan 430060, China
| | - Changhua Wang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China.
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Shafiee SM, Rasti M, Seghatoleslam A, Azimi T, Owji AA. UBE2Q1 in a Human Breast Carcinoma Cell Line: Overexpression and Interaction with p53. Asian Pac J Cancer Prev 2016; 16:3723-7. [PMID: 25987028 DOI: 10.7314/apjcp.2015.16.9.3723] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The p53 tumor suppressor protein is a principal mediator of growth arrest, senescence, and apoptosis in response to a broad array of cellular damage. p53 is a substrate for the ubiquitin-proteasome system, however, the ubiquitin-conjugating enzymes (E2s) involved in p53 ubiquitination have not been well studied. UBE2Q1 is a novel E2 ubiquitin conjugating enzyme gene. Here, we investigated the effect of UBE2Q1 overexpression on the level of p53 in the MDA-MB-468 breast cancer cell line as well as the interaction between UBE2Q1 and p53. By using a lipofection method, the p53 mutated breast cancer cell line, MDA-MB-468, was transfected with the vector pCMV6-AN-GFP, containing UBE2Q1 ORF. Western blot analysis was employed to verify the overexpression of UBE2Q1 in MDA-MB-468 cells and to evaluate the expression level of p53 before and after cell transfection. Immunoprecipitation and GST pull-down protocols were used to investigate the binding of UBE2Q1 to p53. We established MDA-MB-468 cells that transiently expressed a GFP fusion proteins containing UBE2Q1 (GFP-UBE2Q1). Western blot analysis revealed that levels of p53 were markedly lower in UBE2Q1 transfected MDA-MB-468 cells as compared with control MDA-MB-468 cells. Both in vivo and in vitro data showed that UBE2Q1 co-precipitated with p53 protein. Our data for the first time showed that overexpression of UBE2Q1can lead to the repression of p53 in MDA-MB-468 cells. This repression of p53 may be due to its UBE2Q1 mediated ubiquitination and subsequent proteasome degradation, a process that may involve direct interaction of UBE2Q1with p53.
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Affiliation(s)
- Sayed Mohammad Shafiee
- Departments of Biochemistry- Recombinant Protein Laboratory, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran E-mail :
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14
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Guan F, Ding Y, Zhang Y, Zhou Y, Li M, Wang C. Curcumin Suppresses Proliferation and Migration of MDA-MB-231 Breast Cancer Cells through Autophagy-Dependent Akt Degradation. PLoS One 2016; 11:e0146553. [PMID: 26752181 PMCID: PMC4708990 DOI: 10.1371/journal.pone.0146553] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/19/2015] [Indexed: 12/25/2022] Open
Abstract
Previous studies have evidenced that the anticancer potential of curcumin (diferuloylmethane), a main yellow bioactive compound from plant turmeric was mediated by interfering with PI3K/Akt signaling. However, the underlying molecular mechanism is still poorly understood. This study experimentally revealed that curcumin treatment reduced Akt protein expression in a dose- and time-dependent manner in MDA-MB-231 breast cancer cells, along with an activation of autophagy and suppression of ubiquitin-proteasome system (UPS) function. The curcumin-reduced Akt expression, cell proliferation, and migration were prevented by genetic and pharmacological inhibition of autophagy but not by UPS inhibition. Additionally, inactivation of AMPK by its specific inhibitor compound C or by target shRNA-mediated silencing attenuated curcumin-activated autophagy. Thus, these results indicate that curcumin-stimulated AMPK activity induces activation of the autophagy-lysosomal protein degradation pathway leading to Akt degradation and the subsequent suppression of proliferation and migration in breast cancer cell.
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Affiliation(s)
- Feng Guan
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Youming Ding
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Yemin Zhang
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Yu Zhou
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Mingxin Li
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Changhua Wang
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
- * E-mail:
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15
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Ding Y, Cao Y, Wang B, Wang L, Zhang Y, Zhang D, Chen X, Li M, Wang C. APPL1-Mediating Leptin Signaling Contributes to Proliferation and Migration of Cancer Cells. PLoS One 2016; 11:e0166172. [PMID: 27820851 PMCID: PMC5098739 DOI: 10.1371/journal.pone.0166172] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/23/2016] [Indexed: 11/24/2022] Open
Abstract
Leptin has been implicated in tumorigenesis and tumor progression, particularly in obese patients. As a multifunctional adaptor protein, APPL1 (containing pleckstrin homology domain, phosphotyrosine binding domain, and a leucine zipper motif 1) plays a critical role in regulating adiponectin and insulin signaling pathways. Currently, high APPL1 level has been suggested to be related to metastases and progression of some types of cancer. However, the intercourse between leptin signaling pathway and APPL1 remains poorly understood. Here, we show that the protein levels and phosphorylation statues of APPL1were highly expressed in tissues from human hepatocellular carcinoma and triple-positive breast cancer. Leptin stimulated APPL1 phosphorylation in a time-dependent manner in both human hepatocellular carcinoma HepG2 cell and breast cancer MCF-7 cell. Overexpression or suppression of APPL1 promoted or attenuated, respectively, leptin-induced phosphorylation of STAT3, ERK1/2, and Akt in the cancer cells, accompanied with enhanced or mitigated cell proliferation and migration. In addition, we identified that APPL1 directly bound to both leptin receptor and STAT3. This interaction was significantly enhanced by leptin stimulation. Our results suggested that APPL1 positively mediated leptin signaling and promoted leptin-induced proliferation and migration of cancer cells. This finding reveals a novel mechanism by which leptin promotes the motility and growth of cancer cells.
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Affiliation(s)
- Youming Ding
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Yingkang Cao
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Bin Wang
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Lei Wang
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Yemin Zhang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Deling Zhang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Xiaoyan Chen
- Department of Hepatobiliary & Laparascopic Surgery, Wuhan University Renmin Hospital, Wuhan, 430060, China
| | - Mingxin Li
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Changhua Wang
- Department of Pathology & Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
- * E-mail:
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16
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Mohammad RM, Muqbil I, Lowe L, Yedjou C, Hsu HY, Lin LT, Siegelin MD, Fimognari C, Kumar NB, Dou QP, Yang H, Samadi AK, Russo GL, Spagnuolo C, Ray SK, Chakrabarti M, Morre JD, Coley HM, Honoki K, Fujii H, Georgakilas AG, Amedei A, Niccolai E, Amin A, Ashraf SS, Helferich WG, Yang X, Boosani CS, Guha G, Bhakta D, Ciriolo MR, Aquilano K, Chen S, Mohammed SI, Keith WN, Bilsland A, Halicka D, Nowsheen S, Azmi AS. Broad targeting of resistance to apoptosis in cancer. Semin Cancer Biol 2015; 35 Suppl:S78-S103. [PMID: 25936818 PMCID: PMC4720504 DOI: 10.1016/j.semcancer.2015.03.001] [Citation(s) in RCA: 512] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 03/04/2015] [Accepted: 03/04/2015] [Indexed: 12/15/2022]
Abstract
Apoptosis or programmed cell death is natural way of removing aged cells from the body. Most of the anti-cancer therapies trigger apoptosis induction and related cell death networks to eliminate malignant cells. However, in cancer, de-regulated apoptotic signaling, particularly the activation of an anti-apoptotic systems, allows cancer cells to escape this program leading to uncontrolled proliferation resulting in tumor survival, therapeutic resistance and recurrence of cancer. This resistance is a complicated phenomenon that emanates from the interactions of various molecules and signaling pathways. In this comprehensive review we discuss the various factors contributing to apoptosis resistance in cancers. The key resistance targets that are discussed include (1) Bcl-2 and Mcl-1 proteins; (2) autophagy processes; (3) necrosis and necroptosis; (4) heat shock protein signaling; (5) the proteasome pathway; (6) epigenetic mechanisms; and (7) aberrant nuclear export signaling. The shortcomings of current therapeutic modalities are highlighted and a broad spectrum strategy using approaches including (a) gossypol; (b) epigallocatechin-3-gallate; (c) UMI-77 (d) triptolide and (e) selinexor that can be used to overcome cell death resistance is presented. This review provides a roadmap for the design of successful anti-cancer strategies that overcome resistance to apoptosis for better therapeutic outcome in patients with cancer.
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Affiliation(s)
- Ramzi M Mohammad
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States; Interim translational Research Institute, Hamad Medical Corporation, Doha, Qatar.
| | - Irfana Muqbil
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States
| | - Leroy Lowe
- Getting to Know Cancer, Truro, Nova Scotia, Canada
| | - Clement Yedjou
- C-SET, [Jackson, #229] State University, Jackson, MS, United States
| | - Hsue-Yin Hsu
- Department of Life Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Liang-Tzung Lin
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Markus David Siegelin
- Department of Pathology and Cell Biology, Columbia University, New York City, NY, United States
| | - Carmela Fimognari
- Dipartimento di Scienze per la Qualità della Vita Alma Mater Studiorum-Università di Bologna, Italy
| | - Nagi B Kumar
- Moffit Cancer Center, University of South Florida College of Medicine, Tampa, FL, United States
| | - Q Ping Dou
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States; Departments of Pharmacology and Pathology, Karmanos Cancer Institute, Detroit MI, United States
| | - Huanjie Yang
- The School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | | | - Gian Luigi Russo
- Institute of Food Sciences National Research Council, Avellino, Italy
| | - Carmela Spagnuolo
- Institute of Food Sciences National Research Council, Avellino, Italy
| | - Swapan K Ray
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Mrinmay Chakrabarti
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - James D Morre
- Mor-NuCo, Inc, Purdue Research Park, West Lafayette, IN, United States
| | - Helen M Coley
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Japan
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Japan
| | - Alexandros G Georgakilas
- Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou 15780, Athens, Greece
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, university of florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, university of florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, UAE University, United Arab Emirates; Faculty of Science, Cairo University, Egypt
| | - S Salman Ashraf
- Department of Chemistry, College of Science, UAE University, United Arab Emirates
| | - William G Helferich
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Xujuan Yang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Chandra S Boosani
- Department of BioMedical Sciences, School of Medicine Creighton University, Omaha NE, United States
| | - Gunjan Guha
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Dipita Bhakta
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | | | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", Italy
| | - Sophie Chen
- Ovarian and Prostate Cancer Research Trust Laboratory, Guildford, Surrey, United Kingdom
| | - Sulma I Mohammed
- Department of Comparative Pathobiology and Purdue University Center for Cancer Research, Purdue, West Lafayette, IN, United States
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Ireland
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Ireland
| | - Dorota Halicka
- Department of Pathology, New York Medical College, Valhalla, NY, United States
| | - Somaira Nowsheen
- Mayo Graduate School, Mayo Medical School, Mayo Clinic Medical Scientist Training Program, Rochester, MN, United States
| | - Asfar S Azmi
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States
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17
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Zhang H, Xu HL, Fu WW, Xin Y, Li MW, Wang SJ, Yu XF, Sui DY. 20(S)-Protopanaxadiol induces human breast cancer MCF-7 apoptosis through a caspase-mediated pathway. Asian Pac J Cancer Prev 2015; 15:7919-23. [PMID: 25292087 DOI: 10.7314/apjcp.2014.15.18.7919] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
20(S)-Protopanaxadiol (PPD), a ginsenoside isolated from Pananx quinquefolium L., has been shown to inhibit growth and proliferation in several cancer cell lines. The aim of this study was to evaluate its anticancer activity in human breast cancer cells. MCF-7 cells were incubated with different concentrations of 20(S)-PPD and cytotoxicity was evaluated by MTT assay. Occurrence of apoptosis was detected by DAPI and Annexin V-FITC/PI double staining. Mitochondrial membrane potential was measured with Rhodamine 123. The Bcl-2 and Bax expression were determined by Western blot analysis. Caspase activity was measured by colorimetric assay. 20(S)-PPD dose-dependently inhibited cell proliferation in MCF-7 cells, with an IC50 value of 33.3 μM at 24h. MCF-7 cells treated with 20(S)-PPD presented typical apoptosis, as observed by morphological analysis in cell stained with DAPI. The percentages of annexin V-FITC positive cells were 8.92%, 17.8%, 24.5% and 30.5% in MCF-7 cells treated with 0, 15, 30 and 60μM of 20(S)-PPD, respectively. Moreover, 20(S)-PPD could induce mitochondrial membrane potential loss, up-regulate Bax expression and down-regulate Bcl-2 expression. These events paralleled activation of caspase-9, -3 and PARP cleavage. Apoptosis induced by 20(S)-PPD was blocked by z-VAD-fmk, a pan-caspase inhibitor, suggesting induction of caspase-mediated apoptotic cell death. In conclusion, the 20(S)-PPD investigated is able to inhibit cell proliferation and to induce cancer cell death by a caspase-mediated apoptosis pathway.
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Affiliation(s)
- Hong Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin Province, China E-mail : ,
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18
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Yao X, Liu H, Zhang X, Zhang L, Li X, Wang C, Sun S. Cell Surface GRP78 Accelerated Breast Cancer Cell Proliferation and Migration by Activating STAT3. PLoS One 2015; 10:e0125634. [PMID: 25973748 PMCID: PMC4431800 DOI: 10.1371/journal.pone.0125634] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 03/16/2015] [Indexed: 11/18/2022] Open
Abstract
High levels of cell surface glucose regulated protein 78 (sGRP78) have been implicated in cancer growth, survival, metastasis, and chemotherapy resistance. However, the underlying mechanism remains largely unknown. Here we report that the level of sGRP78 expression in human breast tumors gradually increases during cancer progression. Overexpression of GRP78 significantly enhanced its membrane distribution in human MCF-7 breast cancer cells, but had no effect on endoplasmic reticulum (ER) stress. High levels of sGRP78 facilitated cell proliferation and migration, as well as suppressed cell apoptosis. Neutralization of sGRP78 by a specific antibody against GRP78 alleviated sGRP78-induced cell growth and migration. Importantly, high phosphorylation levels of the signal transducer and activator of transcription 3 (STAT3) were found in human breast tumors that express sGRP78 and MCF-7 cells infected with adenovirus encoding human GRP78. Pretreatment with a GRP78 antibody suppressed STAT3 phosphorylation. Furthermore, genetic and pharmacological inhibition of STAT3 reversed the impacts of GRP78 on cell proliferation, apoptosis, and migration. These findings indicate that STAT3 mediates sGRP78-promoted breast cancer cell growth and migration.
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Affiliation(s)
- Xiaoli Yao
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, China
| | - Hua Liu
- Department of Clinical Pathology, The First People’s Hospital of Lianyungang, Lianyungang, 222000, Jiangsu Province, China
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, Hubei Province, China
| | - Xinghua Zhang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, China
| | - Liang Zhang
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, China
| | - Xiang Li
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, China
| | - Changhua Wang
- Department of Pathophysiology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, Hubei Province, China
| | - Shengrong Sun
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, China
- * E-mail:
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19
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Mencalha AL, Corrêa S, Abdelhay E. Role of calcium-dependent protein kinases in chronic myeloid leukemia: combined effects of PKC and BCR-ABL signaling on cellular alterations during leukemia development. Onco Targets Ther 2014; 7:1247-54. [PMID: 25045273 PMCID: PMC4099416 DOI: 10.2147/ott.s64303] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Calcium-dependent protein kinases (PKCs) function in a myriad of cellular processes, including cell-cycle regulation, proliferation, hematopoietic stem cell differentiation, apoptosis, and malignant transformation. PKC inhibitors, when targeted to these pathways, have demonstrated efficacy against several types of solid tumors as well as leukemia. Chronic myeloid leukemia (CML) represents 20% of all adult leukemia. The aberrant Philadelphia chromosome has been reported as the main cause of CML development in hematopoietic stem cells, due to the formation of the BCR-ABL oncogene. PKCs and BCR-ABL coordinate several signaling pathways that are crucial to cellular malignant transformation. Experimental and clinical evidence suggests that pharmacological approaches using PKC inhibitors may be effective in the treatment of CML. This mini review summarizes articles from the National Center for Biotechnology Information website that have shown evidence of the involvement of PKC in CML.
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Affiliation(s)
- André L Mencalha
- Biophysics and Biometry Department, Roberto Alcântara Gomes Biology Institute, Rio de Janeiro's State University (UERJ), Rio de Janeiro, Brazil
| | - Stephany Corrêa
- Bone Marrow Transplantation Unit (CEMO), National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Eliana Abdelhay
- Bone Marrow Transplantation Unit (CEMO), National Cancer Institute (INCA), Rio de Janeiro, Brazil
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