101
|
Choi S, Bhagwat AM, Al Mismar R, Goswami N, Ben Hamidane H, Sun L, Graumann J. Proteomic profiling of human cancer pseudopodia for the identification of anti-metastatic drug candidates. Sci Rep 2018; 8:5858. [PMID: 29643415 PMCID: PMC5895739 DOI: 10.1038/s41598-018-24256-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 11/06/2017] [Indexed: 01/17/2023] Open
Abstract
Cancer metastasis causes approximately 90% of all cancer-related death and independent of the advancement of cancer therapy, a majority of late stage patients suffers from metastatic cancer. Metastasis implies cancer cell migration and invasion throughout the body. Migration requires the formation of pseudopodia in the direction of movement, but a detailed understanding of this process and accordingly strategies of prevention remain elusive. Here, we use quantitative proteomic profiling of human cancer pseudopodia to examine this mechanisms essential to metastasis formation, and identify potential candidates for pharmacological interference with the process. We demonstrate that Prohibitins (PHBs) are significantly enriched in the pseudopodia fraction derived from cancer cells, and knockdown of PHBs, as well as their chemical inhibition through Rocaglamide (Roc-A), efficiently reduces cancer cell migration.
Collapse
Affiliation(s)
- Sunkyu Choi
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar
| | - Aditya M Bhagwat
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar
| | - Rasha Al Mismar
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar
| | - Neha Goswami
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar
| | | | - Lu Sun
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar
| | - Johannes Graumann
- Research Division, Weill Cornell Medicine - Qatar, Doha, State of Qatar. .,Scientific Service Group Biomolecular Mass Spectrometry, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.
| |
Collapse
|
102
|
Wu J, Hu L, Wu F, Zou L, He T. Poor prognosis of hexokinase 2 overexpression in solid tumors of digestive system: a meta-analysis. Oncotarget 2018; 8:32332-32344. [PMID: 28415659 PMCID: PMC5458288 DOI: 10.18632/oncotarget.15974] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/28/2017] [Indexed: 12/28/2022] Open
Abstract
Several previous studies have reported the prognostic value of hexokinase 2 (HK2) in digestive system tumors. However, these studies were limited by the small sample sizes and the results were inconsistent among them. Therefore, we conducted a meta-analysis based on 15 studies with 1932 patients to assess the relationship between HK2 overexpression and overall survival (OS) of digestive system malignancies. The relationship of HK2 and clinicopathological features was also evaluated. Hazard ratio (HR) or odds ratio (OR) with its 95% confidence intervals (CI) were calculated to estimate the effect size. Positive HK2 expression showed poor OS in all tumor types (HR = 1.75 [1.41-2.18], P < 0.001). When stratified by tumor type, the impact of HK2 overexpression on poor prognosis was observed in gastric cancer (HR = 1.77 [1.25-2.50], P < 0.001), hepatocellular carcinoma (HR = 1.87 [1.58-2.21], P < 0.001), and colorectal cancer (HR = 2.89 [1.62-5.15], P < 0.001), but not in pancreatic ductal adencarcinoma (HR = 1.11 [0.58-2.11], P = 0.763). Furthermore, high HK2 expression was significantly associated with some phenotypes of tumor aggressiveness, such as large tumor size (OR = 2.03 [1.10-3.74], P = 0.024), positive lymph node metastasis (OR = 2.05 [1.39-3.02], P < 0.001), advanced clinical stage (OR = 2.17 [1.21-3.89], P = 0.009) and high alpha fetoprotein level (OR = 1.47 [1.09-2.02] P = 0.013). In summary, HK2 might act as a prognostic indicator and a potential therapeutic target of these digestive system cancers.
Collapse
Affiliation(s)
- Jiayuan Wu
- Clinical Research Center, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, People's Republic of China.,Nutritional Department, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, People's Republic of China
| | - Liren Hu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangdong Medical University, Zhanjiang, People's Republic of China
| | - Fenping Wu
- Department of Radiotherapy, The Seventh People's Hospital of Chengdu, The Oncology Hospital of Chengdu, Chengdu, People's Republic of China
| | - Lei Zou
- Department of Hepatobiliary Surgery, The First People's Hospital of Yunnan Province, Kunming, People's Republic of China
| | - Taiping He
- School of Public Health, Guangdong Medical University, Zhanjiang, People's Republic of China
| |
Collapse
|
103
|
Poudineh M, Sargent EH, Pantel K, Kelley SO. Profiling circulating tumour cells and other biomarkers of invasive cancers. Nat Biomed Eng 2018; 2:72-84. [DOI: 10.1038/s41551-018-0190-5] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 01/09/2018] [Indexed: 02/07/2023]
|
104
|
Overexpression of riboflavin transporter 2 contributes toward progression and invasion of glioma. Neuroreport 2018; 27:1167-73. [PMID: 27584688 DOI: 10.1097/wnr.0000000000000674] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Human riboflavin transporter 2 (RFT2) encoded by the SLC52A3 gene is a member of the SLC52 family that has been shown to play a key role in riboflavin homeostasis. Recently, a number of studies have shown that RFT2 is important in the development of several cancers, including esophageal squamous cell carcinoma, gastric cancer, and cervical cancer. However, its expression and function in glioma have not yet been explored. In this study, we found that RFT2 was overexpressed in glioma samples compared with normal brain tissue. Furthermore, RFT2 expression was correlated with WHO grade (P<0.001). Silencing of RFT2 resulted in inhibition of glioma cell proliferation through promotion of cell cycle arrest and apoptosis. Expression of proteins known to regulate cell cycle or apoptosis including p21, p27, BCL-2, and BAX was notably altered in RFT2-depleted cells. Furthermore, silencing of RFT2 impeded the migration and invasion of glioma cells through suppression of matrix metalloproteinase-2 and matrix metalloproteinase-9 expression. In addition to blocking cell proliferation in vitro, reduction of RFT2 levels also decreased tumor growth in vivo. These data suggest that RFT2 could be an attractive therapeutic target for the treatment of glioma.
Collapse
|
105
|
Xu Y, Feingold PL, Surman DR, Brown K, Xi S, Davis JL, Hernandez J, Schrump DS, Ripley RT. Bile acid and cigarette smoke enhance the aggressive phenotype of esophageal adenocarcinoma cells by downregulation of the mitochondrial uncoupling protein-2. Oncotarget 2017; 8:101057-101071. [PMID: 29254145 PMCID: PMC5731855 DOI: 10.18632/oncotarget.22380] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/25/2017] [Indexed: 01/28/2023] Open
Abstract
Limited information is available regarding mechanisms that link the known carcinogenic risk factors of gastro-esophageal reflux and cigarette smoking to metabolic alterations in esophageal adenocarcinoma (EAC). In the present study, we utilized a novel in-vitro model to examine whether bile acid and cigarette smoke increase the aggressiveness of EAC and whether these changes are associated with metabolic changes. EAC cells (EACC) were exposed to 10 μg/ml cigarette smoke condensate (CSC) and/or 100 μM of the oncogenic bile acid, deoxycholic acid (DCA), for 5 days. These exposure conditions were chosen given their lack of effect on proliferation or viability. DCA and CSC increased invasion, migration, and clonogenicity in EAC cells. These changes were associated with concomitant increases in ATP, ROS, and lactate production indicative of increased mitochondrial respiration as well as glycolytic activity. DCA and CSC exposure significantly decreased expression of uncoupling protein-2 (UCP2), a mitochondrial inner membrane protein implicated in regulation of the proton gradient. Knockdown of UCP2 in EACC phenocopied DCA and CSC exposure as evidenced by increased cell migration, invasion, and clonogenicity, whereas over-expression of UCP2 had an inverse effect. Furthermore, over-expression of UCP2 abrogated DCA and CSC-mediated increases in lactate and ATP production in EACC. DCA and CSC promote the aggressive phenotype of EACC with concomitant metabolic changes occurring via downregulation of UCP2. These results indicate that UCP2 is integral to the aggressive phenotype of EACC. This mechanism suggests that targeting alterations in cellular energetics may be a novel strategy for EAC therapy.
Collapse
Affiliation(s)
- Yuan Xu
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Paul L. Feingold
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Deborah R. Surman
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Kate Brown
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Sichuan Xi
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Jeremy L. Davis
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - Jonathan Hernandez
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - David S. Schrump
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| | - R. Taylor Ripley
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20852, USA
| |
Collapse
|
106
|
Zhao J, Huang X, Xu Z, Dai J, He H, Zhu Y, Wang H. LDHA promotes tumor metastasis by facilitating epithelial‑mesenchymal transition in renal cell carcinoma. Mol Med Rep 2017; 16:8335-8344. [PMID: 28983605 DOI: 10.3892/mmr.2017.7637] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 08/11/2017] [Indexed: 01/14/2023] Open
Abstract
Previous studies have indicated that high expression of lactate dehydrogenase A (LDHA) exists in many human cancers. Recently, several reports showed that silencing or inhibition of LDHA could suppress metastasis of human cancer including renal cell carcinoma (RCC). However, the mechanism remains unknown. The role of LDHA in RCC migration and invasion was investigated using immunohistochemistry, western blotting, Transwell and scratch assays, and in vivo experiment. The influence of LDHA on the Warburg effect was also investigated by LDHA activity and lactate production assay. LDHA was overexpressed in RCC tissues and predicted a worse survival following renal resection. Correlation analysis demonstrated that LDHA was negatively correlated with E‑cadherin and positively with N‑cadherin. Experimentally, both in vivo and in vitro experiments found downregulation of LDHA suppressed RCC cells migration and invasion by inhibiting EMT. In addition, results indicated LDHA could promote the Warburg effect. Further research presented that the LDHA inhibitor, oxamate, suppressed tumor metastasis by inhibiting LDHA activity and EMT. These results demonstrated that LDHA mediates tumor metastasis by promoting EMT in RCC, suggesting that LDHA could be a promising therapeutic target for RCC therapy.
Collapse
Affiliation(s)
- Juping Zhao
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Xin Huang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Zhaoping Xu
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Jun Dai
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Hongchao He
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Yu Zhu
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Haofei Wang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| |
Collapse
|
107
|
Li Y, Wang C, Li D, Deng P, Shao X, Hu J, Liu C, Jie H, Lin Y, Li Z, Qian X, Zhang H, Zhao Y. 1H-NMR-based metabolic profiling of a colorectal cancer CT-26 lung metastasis model in mice. Oncol Rep 2017; 38:3044-3054. [PMID: 28901465 DOI: 10.3892/or.2017.5954] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 06/26/2017] [Indexed: 02/05/2023] Open
Abstract
Lung metastasis is an important cause for the low 5-year survival rate of colorectal cancer patients. Understanding the metabolic profile of lung metastasis of colorectal cancer is important for developing molecular diagnostic and therapeutic approaches. We carried out the metabonomic profiling of lung tissue samples on a mouse lung metastasis model of colorectal cancer using 1H-nuclear magnetic resonance (1H-NMR). The lung tissues of mice were collected at different intervals after marine colon cancer cell line CT-26 was intravenously injected into BALB/c mice. The distinguishing metabolites of lung tissue were investigated using 1H-NMR-based metabonomic assay, which is a highly sensitive and non-destructive method for biomarker identification. Principal component analysis (PCA), partial least squares discriminant analysis (PLS-DA) and orthogonal partial least squares discriminant analysis (OPLS-DA) were applied to analyze 1H-NMR profiling data to seek potential biomarkers. All of the 3 analyses achieved excellent separations between the normal and metastasis groups. A total of 42 metabolites were identified, ~12 of which were closely correlated with the process of metastasis from colon to lung. These altered metabolites indicated the disturbance of metabolism in metastatic tumors including glycolysis, TCA cycle, glutaminolysis, choline metabolism and serine biosynthesis. Our findings firstly identified the distinguishing metabolites in mouse colorectal cancer lung metastasis models, and indicated that the metabolite disturbance may be associated with the progression of lung metastasis from colon cancer. The altered metabolites may be potential biomarkers that provide a promising molecular approach for clinical diagnosis and mechanistic study of colorectal cancer with lung metastasis.
Collapse
Affiliation(s)
- Yan Li
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Chunting Wang
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Dandan Li
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Pengchi Deng
- Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xiaoni Shao
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Jing Hu
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Chunqi Liu
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Hui Jie
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Yiyun Lin
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Zhuoling Li
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Xinying Qian
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Huaqin Zhang
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| | - Yinglan Zhao
- Pharmacodynamics Pharmacokinetics Early Safety Evaluation Model Animals, Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, Sichuan 610041, P.R. China
| |
Collapse
|
108
|
Yang J, Wang C, Zhao F, Luo X, Qin M, Arunachalam E, Ge Z, Wang N, Deng X, Jin G, Cong W, Qin W. Loss of FBP1 facilitates aggressive features of hepatocellular carcinoma cells through the Warburg effect. Carcinogenesis 2017; 38:134-143. [PMID: 27742690 DOI: 10.1093/carcin/bgw109] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 10/13/2016] [Indexed: 11/13/2022] Open
Abstract
Reprogrammed metabolism has been identified as an emerging hallmark in cancer cells. It has been demonstrated that fructose-1, 6-bisphosphatase 1 (FBP1) as a rate-limiting enzyme in gluconeogenesis plays critical roles in tumor initiation and progression in several cancer types. However, function of FBP1 in hepatocellular carcinoma (HCC) is still not clear. In this study, we observed that the expression of FBP1 was obviously downregulated in the cell lines and tissues of HCC. Downregulation of FBP1 in HCC tissues was correlated with a lower overall survival rate and had a relatively higher tendency of tumor recurrence (n = 224). Silencing FBP1 could significantly promote colony formation, proliferation and metastasis of HCC cells, while ectopic overexpression of FBP1 resulted in impaired abilities of colony formation, proliferation and metastasis in vitro and in vivo. Mechanistically, silencing FBP1 facilitated glycolysis in HCC cell lines, which may be responsible for aggressiveness of HCC cells. We further found that targeting the Warburg effect using the specific inhibitor FX11 could suppress the aggressiveness of HCC cells which was mediated by loss of FBP1. These findings indicate that FBP1 appears to be a tumor suppressor in HCC. Strategies to restore the levels and activities of FBP1 might be developed to treat patients with HCC.
Collapse
Affiliation(s)
- Juan Yang
- Basic Medical Research Centre, Medical College of Nantong University, Nantong 226021, China
| | - Cun Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
| | - Fengbo Zhao
- Basic Medical Research Centre, Medical College of Nantong University, Nantong 226021, China
| | - Xiaoying Luo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
| | - Meilin Qin
- Shanghai Medical College of Fudan University, Shanghai 200433, China
| | - Einthavy Arunachalam
- The School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surry GU2 7YW, UK
| | - Zhouhong Ge
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
| | - Ning Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
| | - Xuan Deng
- Shanghai Medical College of Fudan University, Shanghai 200433, China
| | - Guangzhi Jin
- Department of Pathology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
| | - Wenming Cong
- Department of Pathology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
| | - Wenxin Qin
- Basic Medical Research Centre, Medical College of Nantong University, Nantong 226021, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
| |
Collapse
|
109
|
miR-181d and c-myc-mediated inhibition of CRY2 and FBXL3 reprograms metabolism in colorectal cancer. Cell Death Dis 2017; 8:e2958. [PMID: 28749470 PMCID: PMC5550850 DOI: 10.1038/cddis.2017.300] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/23/2017] [Accepted: 05/18/2017] [Indexed: 01/23/2023]
Abstract
Colorectal cancer (CRC) is the second major cause of tumor-related deaths. MicroRNAs (miRNAs) have pivotal roles in CRC progression. Here, we describe the effect of miR-181d on CRC cell metabolism and underlying molecular mechanism. Our data firmly demonstrated that knockdown of miR-181d suppressed CRC cell proliferation, migration, and invasion by impairing glycolysis. Mechanistically, miR-181d stabilized c-myc through directly targeting the 3'-UTRs of CRY2 and FBXL3, which subsequently increased the glucose consumption and the lactate production. Inhibition of c-myc via siRNA or small molecular inhibitor abolished the oncogenic effects of miR-181d on the growth and metastasis of CRC cells. Furthermore, c-myc/HDAC3 transcriptional suppressor complex was found to co-localize on the CRY2 and FBXL3 promoters, epigenetically inhibit their transcription, and finally induce their downregulation in CRC cells. In addition, miR-181d expression could be directly induced by an activation of c-myc signaling. Together, our data indicate an oncogenic role of miR-181d in CRC by promoting glycolysis, and miR-181d/CRY2/FBXL3/c-myc feedback loop might be a therapeutic target for patients with CRC.
Collapse
|
110
|
PGK1 Drives Hepatocellular Carcinoma Metastasis by Enhancing Metabolic Process. Int J Mol Sci 2017; 18:ijms18081630. [PMID: 28749413 PMCID: PMC5578020 DOI: 10.3390/ijms18081630] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/12/2017] [Accepted: 07/22/2017] [Indexed: 01/04/2023] Open
Abstract
During the proliferation and metastasis, the tumor cells prefer glycolysis (Warburg effect), but its exact mechanism remains largely unknown. In this study, we demonstrated that phosphoglycerate kinase 1 (PGK1) is an important enzyme in the pathway of metabolic glycolysis. We observed a significant overexpression of PGK1 in hepatocellular carcinoma tissues, and a correlation between PGK1 expression and poor survival of hepatocellular carcinoma patients. Also, the depletion of PGK1 dramatically reduced cancer cell proliferation and metastasis, indicating an oncogenic role of PGK1 in liver cancer progression. Further experiments showed that PGK1 played an important role in MYC-induced metabolic reprogramming, which led to an enhanced Warburg effect. Our results revealed a new effect of PGK1, which can provide a new treatment strategy for hepatocellular carcinoma, as PGK1 is used to indicate the prognosis of hepatocellular carcinoma (HCC).
Collapse
|
111
|
Huang H, Vandekeere S, Kalucka J, Bierhansl L, Zecchin A, Brüning U, Visnagri A, Yuldasheva N, Goveia J, Cruys B, Brepoels K, Wyns S, Rayport S, Ghesquière B, Vinckier S, Schoonjans L, Cubbon R, Dewerchin M, Eelen G, Carmeliet P. Role of glutamine and interlinked asparagine metabolism in vessel formation. EMBO J 2017; 36:2334-2352. [PMID: 28659375 DOI: 10.15252/embj.201695518] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/31/2022] Open
Abstract
Endothelial cell (EC) metabolism is emerging as a regulator of angiogenesis, but the precise role of glutamine metabolism in ECs is unknown. Here, we show that depriving ECs of glutamine or inhibiting glutaminase 1 (GLS1) caused vessel sprouting defects due to impaired proliferation and migration, and reduced pathological ocular angiogenesis. Inhibition of glutamine metabolism in ECs did not cause energy distress, but impaired tricarboxylic acid (TCA) cycle anaplerosis, macromolecule production, and redox homeostasis. Only the combination of TCA cycle replenishment plus asparagine supplementation restored the metabolic aberrations and proliferation defect caused by glutamine deprivation. Mechanistically, glutamine provided nitrogen for asparagine synthesis to sustain cellular homeostasis. While ECs can take up asparagine, silencing asparagine synthetase (ASNS, which converts glutamine-derived nitrogen and aspartate to asparagine) impaired EC sprouting even in the presence of glutamine and asparagine. Asparagine further proved crucial in glutamine-deprived ECs to restore protein synthesis, suppress ER stress, and reactivate mTOR signaling. These findings reveal a novel link between endothelial glutamine and asparagine metabolism in vessel sprouting.
Collapse
Affiliation(s)
- Hongling Huang
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Saar Vandekeere
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Joanna Kalucka
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Laura Bierhansl
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Annalisa Zecchin
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Ulrike Brüning
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Asjad Visnagri
- Leeds Institute of Cardiovascular & Metabolic Medicine, The University of Leeds, Leeds, UK
| | - Nadira Yuldasheva
- Leeds Institute of Cardiovascular & Metabolic Medicine, The University of Leeds, Leeds, UK
| | - Jermaine Goveia
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Bert Cruys
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Katleen Brepoels
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Sabine Wyns
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Stephen Rayport
- Department of Psychiatry, Columbia University, New York, NY, USA.,Department of Molecular Therapeutics, New York State Psychiatric Institute, New York, NY, USA
| | - Bart Ghesquière
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Stefan Vinckier
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Luc Schoonjans
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Richard Cubbon
- Leeds Institute of Cardiovascular & Metabolic Medicine, The University of Leeds, Leeds, UK
| | - Mieke Dewerchin
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Guy Eelen
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven, Belgium .,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
| |
Collapse
|
112
|
Yan X, Li Q, Ni D, Xie Y, He Q, Wan Q, Liu Y, Lyu Z, Mao Z, Zhou Q. Apobec-1 complementation factor regulates cell migration and apoptosis through Dickkopf1 by acting on its 3′ untranslated region in MCF7 cells. Tumour Biol 2017. [DOI: 10.1177/1010428317706218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Xin Yan
- The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Qianyin Li
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Dongsheng Ni
- The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yajun Xie
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Qingling He
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Qianya Wan
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Yamin Liu
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Zhongshi Lyu
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Zhaomin Mao
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Qin Zhou
- Division of Molecular Nephrology and the Creative Training Center for Undergraduates, The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, The College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| |
Collapse
|
113
|
Schuler MH, Lewandowska A, Caprio GD, Skillern W, Upadhyayula S, Kirchhausen T, Shaw JM, Cunniff B. Miro1-mediated mitochondrial positioning shapes intracellular energy gradients required for cell migration. Mol Biol Cell 2017; 28:2159-2169. [PMID: 28615318 PMCID: PMC5531732 DOI: 10.1091/mbc.e16-10-0741] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 04/26/2017] [Accepted: 06/06/2017] [Indexed: 01/27/2023] Open
Abstract
The ratio of ATP:ADP is highest at perinuclear sites, where mitochondria are dense, and dissipates toward the periphery. Miro1 positions mitochondria toward the cortical cytoskeleton. Deletion of Miro1 results in perinuclear clustering of mitochondria, altering intracellular ATP:ADP gradients, and impairs energy-expensive cell migratory processes. It has long been postulated, although never directly demonstrated, that mitochondria are strategically positioned in the cytoplasm to meet local requirements for energy production. Here we show that positioning of mitochondria in mouse embryonic fibroblasts (MEFs) determines the shape of intracellular energy gradients in living cells. Specifically, the ratio of ATP to ADP was highest at perinuclear areas of dense mitochondria and gradually decreased as more-peripheral sites were approached. Furthermore, the majority of mitochondria were positioned at the ventral surface of the cell, correlating with high ATP:ADP ratios close to the ventral membrane, which rapidly decreased toward the dorsal surface. We used cells deficient for the mitochondrial Rho-GTPase 1 (Miro1), an essential mediator of microtubule-based mitochondrial motility, to study how changes in mitochondrial positioning affect cytoplasmic energy distribution and cell migration, an energy-expensive process. The mitochondrial network in Miro1−/− MEFs was restricted to the perinuclear area, with few mitochondria present at the cell periphery. This change in mitochondrial distribution dramatically reduced the ratio of ATP to ADP at the cell cortex and disrupted events essential for cell movement, including actin dynamics, lamellipodia protrusion, and membrane ruffling. Cell adhesion status was also affected by changes in mitochondrial positioning; focal adhesion assembly and stability was decreased in Miro1−/− MEFs compared with Miro1+/+ MEFs. Consequently Miro1−/− MEFs migrated slower than control cells during both collective and single-cell migration. These data establish that Miro1-mediated mitochondrial positioning at the leading edge provides localized energy production that promotes cell migration by supporting membrane protrusion and focal adhesion stability.
Collapse
Affiliation(s)
- Max-Hinderk Schuler
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112
| | - Agnieszka Lewandowska
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112
| | - Giuseppe Di Caprio
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115.,Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Wesley Skillern
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115.,Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Srigokul Upadhyayula
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115.,Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Tom Kirchhausen
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115 .,Department of Cell Biology, Harvard Medical School, Boston, MA 02115.,Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Janet M Shaw
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112
| | - Brian Cunniff
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115 .,Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| |
Collapse
|
114
|
Gu S, Chen K, Yin M, Wu Z, Wu Y. Proteomic profiling of isogenic primary and metastatic medulloblastoma cell lines reveals differential expression of key metastatic factors. J Proteomics 2017; 160:55-63. [PMID: 28363815 DOI: 10.1016/j.jprot.2017.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/12/2017] [Accepted: 03/26/2017] [Indexed: 12/11/2022]
Abstract
Medulloblastoma is the most common malignant brain tumor in children. Around 30% of medulloblastoma patients are diagnosed with metastasis, which often results in a poor prognosis. Unfortunately, molecular mechanisms of medulloblastoma metastasis remain largely unknown. In this study, we employed the recently developed deep proteome analysis approach to quantitatively profile the expression of >10,000 proteins from CHLA-01-MED and CHLA-01R-MED isogenic cell lines derived from the primary and metastatic tumor of the same patient diagnosed with a group IV medulloblastoma. Using statistical analysis, we identified ~1400 significantly altered proteins between the primary and metastatic cell lines including known factors such as placental growth factor (PLGF), LIM homeobox 1 (LHX1) and prominim 1 (PROM1), as well as the negative regulator secreted protein acidic and cysteine rich (SPARC). Additional transwell experiments and immunohistochemical analysis of clinical medulloblastoma samples implicated yes-associated protein 1 (YAP1) as a potential key factor contributing to metastasis. Taken together, our data broadly defines the metastasis-relevant regulated proteome and provides a precious resource for further investigating potential mechanisms of medulloblastoma metastasis. SIGNIFICANCE This study represented the first deep proteome analysis of metastatic medulloblastomas and provided a valuable candidate list of altered proteins in metastatic medulloblastomas. The primary data suggested YAP1 as a potential driver for the metastasis of medulloblastoma. These results open up numerous avenues for further investigating the underlying mechanisms of medulloblastoma metastasis and improving the prognosis of medulloblastoma patients.
Collapse
Affiliation(s)
- Shuo Gu
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Kai Chen
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Division of Pediatric Oncology, Shanghai Institute of Pediatric Research, Shanghai, China
| | - Minzhi Yin
- Department of Pathology Center, School of Medicine, Shanghai Children's Medical, Shanghai Jiaotong University, Shanghai, China
| | - Zhixiang Wu
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Division of Pediatric Oncology, Shanghai Institute of Pediatric Research, Shanghai, China.
| | - Yeming Wu
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Division of Pediatric Oncology, Shanghai Institute of Pediatric Research, Shanghai, China.
| |
Collapse
|
115
|
Shang R, Pu M, Li Y, Wang D. FOXM1 regulates glycolysis in hepatocellular carcinoma by transactivating glucose transporter 1 expression. Oncol Rep 2017; 37:2261-2269. [DOI: 10.3892/or.2017.5472] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/31/2016] [Indexed: 11/06/2022] Open
|
116
|
Figueiredo AL, Maczkowiak F, Borday C, Pla P, Sittewelle M, Pegoraro C, Monsoro-Burq AH. PFKFB4 control of Akt signaling is essential for premigratory and migratory neural crest formation. Development 2017; 144:4183-4194. [DOI: 10.1242/dev.157644] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 10/07/2017] [Indexed: 01/05/2023]
Abstract
Neural crest (NC) specification comprises an early phase, initiating immature NC progenitors formation at neural plate stage, and a later phase at neural fold stage, resulting into functional premigratory NC, able to delaminate and migrate. We found that the NC Gene Regulatory Network triggers up-regulation of pfkfb4 (6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 4) during this late specification phase. As shown in previous studies, PFKFB4 controls AKT signaling in gastrulas and glycolysis rate in adult cells. Here, we focus on PFKFB4 function in NC during and after neurulation, using time-controlled or hypomorph depletions in vivo. We find that PFKFB4 is essential both for specification of functional premigratory NC and for its migration. PFKFB4-depleted embryos fail activating n-cadherin and late NC specifiers, exhibit severe migration defects, resulting in craniofacial defects. AKT signaling mediates PFKFB4 function in NC late specification, while both AKT signaling and glycolysis regulate migration. These findings highlight novel and critical roles of PFKFB4 activity in later stages of NC development, wired into the NC-GRN.
Collapse
Affiliation(s)
- Ana Leonor Figueiredo
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Frédérique Maczkowiak
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Caroline Borday
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Patrick Pla
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Meghane Sittewelle
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Caterina Pegoraro
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
| | - Anne H. Monsoro-Burq
- Univ. Paris Sud, Université Paris Saclay, CNRS UMR 3347, INSERM U1021, Centre Universitaire, 15, rue Georges Clémenceau, F-91405, Orsay, France
- Institut Curie Research Division, PSL Research University, CNRS UMR 3347, INSERM U1021, France
- Institut Universitaire de France, Paris, France
| |
Collapse
|
117
|
Suppression of lactate dehydrogenase A compromises tumor progression by downregulation of the Warburg effect in glioblastoma. Neuroreport 2016; 27:110-5. [PMID: 26694942 PMCID: PMC4712768 DOI: 10.1097/wnr.0000000000000506] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Reprogrammed glucose metabolism is an emerging hallmark of cancer cells, which show a unique metabolic phenotype known as the Warburg effect. Lactate dehydrogenase A (LDHA), a key enzyme in the glycolytic process, executes the final step by conversion of lactate into pyruvate. However, little is known about the roles of LDHA in human glioblastoma (GBM). In this study, we aimed to determine the effects of LDHA and elucidate related underlying mechanisms. Data derived from Oncomine database showed that LDHA is commonly upregulated in GBM tissues in comparison with corresponding normal controls. Silencing of LDHA expression resulted in reduced glycolysis, decreased cell growth, increased cell apoptosis, and attenuated invasive ability. In the presence of 2-deoxyglucose, a glycolysis inhibitor, the oncogenic activities of LDHA were completely blocked. These findings provide evidence of the cellular functions of LDHA in the progression of GBM and suggest that LDHA might act as a potential therapeutic target for GBM treatment.
Collapse
|
118
|
Elkashef SM, Allison SJ, Sadiq M, Basheer HA, Ribeiro Morais G, Loadman PM, Pors K, Falconer RA. Polysialic acid sustains cancer cell survival and migratory capacity in a hypoxic environment. Sci Rep 2016; 6:33026. [PMID: 27611649 PMCID: PMC5017143 DOI: 10.1038/srep33026] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 08/15/2016] [Indexed: 12/21/2022] Open
Abstract
Polysialic acid (polySia) is a unique carbohydrate polymer expressed on the surface of NCAM (neuronal cell adhesion molecule) in a number of cancers where it modulates cell-cell and cell-matrix adhesion, migration, invasion and metastasis and is strongly associated with poor clinical prognosis. We have carried out the first investigation into the effect of polySia expression on the behaviour of cancer cells in hypoxia, a key source of chemoresistance in tumours. The role of polysialylation and associated tumour cell migration and cell adhesion were studied in hypoxia, along with effects on cell survival and the potential role of HIF-1. Our findings provide the first evidence that polySia expression sustains migratory capacity and is associated with tumour cell survival in hypoxia. Initial mechanistic studies indicate a potential role for HIF-1 in sustaining polySia-mediated migratory capacity, but not cell survival. These data add to the growing body of evidence pointing to a crucial role for the polysialyltransferases (polySTs) in neuroendocrine tumour progression and provide the first evidence to suggest that polySia is associated with an aggressive phenotype in tumour hypoxia. These results have significant potential implications for polyST inhibition as an anti-metastatic therapeutic strategy and for targeting hypoxic cancer cells.
Collapse
Affiliation(s)
- Sara M. Elkashef
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Simon J. Allison
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield HD1 3DH, U.K
| | - Maria Sadiq
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Haneen A. Basheer
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Goreti Ribeiro Morais
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Paul M. Loadman
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Klaus Pors
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| | - Robert A. Falconer
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, West Yorkshire BD7 1DP, U.K
| |
Collapse
|
119
|
Dowling P, Moran B, McAuley E, Meleady P, Henry M, Clynes M, McMenamin M, Leonard N, Monks M, Wynne B, Ormond P, Larkin A. Quantitative label-free mass spectrometry analysis of formalin-fixed, paraffin-embedded tissue representing the invasive cutaneous malignant melanoma proteome. Oncol Lett 2016; 12:3296-3304. [PMID: 27899996 PMCID: PMC5103945 DOI: 10.3892/ol.2016.5101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/15/2016] [Indexed: 12/22/2022] Open
Abstract
Understanding the events at a protein level that govern the progression from melanoma in situ to invasive melanoma are important areas of current research to be developed. Recent advances in the analysis of formalin-fixed, paraffin-embedded tissue by proteomics, particularly using the filter-aided sample preparation protocol, has opened up the possibility of studying vast archives of clinical material and associated medical records. In the present study, quantitative protein profiling was performed using tandem mass spectrometry, and the proteome differences between melanoma in situ and invasive melanoma were compared. Biological pathway analyses revealed several signalling pathways differing between melanoma in situ and invasive melanoma, including metabolic pathways and the phosphoinositide 3-kinase-Akt signalling pathway. Selected proteins of interest (14–3-3ε and fatty acid synthase) were subsequently investigated using immunohistochemical analysis of tissue microarrays. Identifying the key proteins that play significant roles in the establishment of a more invasive phenotype in melanoma may ultimately aid diagnosis and treatment decisions.
Collapse
Affiliation(s)
- Paul Dowling
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Republic of Ireland
| | - Benvon Moran
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland; Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Edel McAuley
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland
| | - Paula Meleady
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland
| | - Michael Henry
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland
| | - Mairin McMenamin
- Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Niamh Leonard
- Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Mary Monks
- Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Bairbre Wynne
- Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Patrick Ormond
- Department of Dermatology, St. James's Hospital, Trinity College Dublin, Dublin 8, Republic of Ireland
| | - Annemarie Larkin
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Republic of Ireland
| |
Collapse
|
120
|
Liang C, Qin Y, Zhang B, Ji S, Shi S, Xu W, Liu J, Xiang J, Liang D, Hu Q, Ni Q, Xu J, Yu X. Metabolic plasticity in heterogeneous pancreatic ductal adenocarcinoma. Biochim Biophys Acta Rev Cancer 2016; 1866:177-188. [PMID: 27600832 DOI: 10.1016/j.bbcan.2016.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 01/17/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDA) is one of the most lethal malignant neoplasms. The recognized hallmarks of PDA are regarded to be downstream events of metabolic reprogramming. Because PDA is a heterogeneous disease that is influenced by genetic polymorphisms and changes in the microenvironment, metabolic plasticity is a novel feature of PDA. As intrinsic factors for metabolic plasticity, K-ras activation and mutations in other tumor suppressor genes induce abnormal mitochondrial metabolism and enhance glycolysis, with alterations in glutamine and lipid metabolism. As extrinsic factors, the acidic and oxygen/nutrient-deprived microenvironment also induces cancer cells to reprogram their metabolic pathway and hijack stromal cells (mainly cancer-associated fibroblasts and immunocytes) to communicate, thereby adapting to metabolic stress. Therefore, a better understanding of the metabolic features of PDA will contribute to the development of novel diagnostic and therapeutic strategies.
Collapse
Affiliation(s)
- Chen Liang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Yi Qin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Bo Zhang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Shunrong Ji
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Si Shi
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Wenyan Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Jiang Liu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Jinfeng Xiang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Dingkong Liang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Qiangsheng Hu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Quanxing Ni
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Jin Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China.
| |
Collapse
|
121
|
Guo M, Ding GB, Yang P, Zhang L, Wu H, Li H, Li Z. Migration Suppression of Small Cell Lung Cancer by Polysaccharides from Nostoc commune Vaucher. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:6277-6285. [PMID: 27465400 DOI: 10.1021/acs.jafc.6b01906] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nostoc commune Vauch., classified into cyanobacteria, has been always well appreciated as a healthy food and medicine worldwide owing to its rich nutrition and potent bioactivities. Nevertheless, the inhibitory effect of polysaccharides from N. commune Vauch. (NVPS) against cancer cell progression and metastasis is still being unraveled. The results in this study showed that NVPS remarkably suppressed cell migration through blocking the epithelial-mesenchymal transition program in NCI-H446 and NCI-H1688 human small cell lung cancer cells. The inhibitory effects were attributed to the suppression of integrin β1/FAK signaling through regulating cell-matrix adhesion. Furthermore, NVPS treatment could increase E-cadherin expression, but down-regulate N-cadherin, Vimentin, and MMP-9 expression, which resulted in the blockage of STAT3 nuclear translocation and JAK1 signaling. These findings suggest that NVPS may be a good candidate for development as a possible antitumor agent against small cell lung cancer.
Collapse
Affiliation(s)
- Min Guo
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Guo-Bin Ding
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Peng Yang
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Lichao Zhang
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Haili Wu
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Hanqing Li
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| | - Zhuoyu Li
- College of Life Science and ‡Institute of Biotechnology, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University , Taiyuan 030006, China
| |
Collapse
|
122
|
Park JH, Williams DR, Lee JH, Lee SD, Lee JH, Ko H, Lee GE, Kim S, Lee JM, Abdelrahman A, Müller CE, Jung DW, Kim YC. Potent Suppressive Effects of 1-Piperidinylimidazole Based Novel P2X7 Receptor Antagonists on Cancer Cell Migration and Invasion. J Med Chem 2016; 59:7410-30. [PMID: 27427902 DOI: 10.1021/acs.jmedchem.5b01690] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The P2X7 receptor (P2X7R) has been reported as a key mediator in inflammatory processes and cancer invasion/metastasis. In this study, we report the discovery of novel P2X7R antagonists and their functional activities as potential antimetastatic agents. Modifications of the hydantoin core-skeleton and the side chain substituents of the P2X7R antagonist 7 were performed. The structure-activity relationships (SAR) and optimization demonstrated the importance of the sulfonyl group at the R1 position and the substituted position and overall size of R2 for P2X7R antagonism. The optimized novel analogues displayed potent P2X7 receptor antagonism (IC50 = 0.11-112 nM) along with significant suppressive effects on IL-1β release (IC50 = 0.32-210 nM). Moreover, representative antagonists (12g, 13k, and 17d) with imidazole and uracil core skeletons significantly inhibited the invasion of MDA-MB-231 triple negative breast cancer cells and cancer cell migration in a zebrafish xenograft model, suggesting the potential therapeutic application of these novel P2X7 antagonists to block metastatic cancer.
Collapse
Affiliation(s)
- Jin-Hee Park
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Darren R Williams
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Ji-Hyung Lee
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - So-Deok Lee
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Je-Heon Lee
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Hyojin Ko
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Ga-Eun Lee
- Department of Pharmaceutical Industry, Korea Health Industry Development Institute (KHIDI) , Chungcheongbuk-do 363-700, Republic of Korea
| | - Sujin Kim
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Jeong-Min Lee
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Aliaa Abdelrahman
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn , An der Immenburg 4, D-53121 Bonn, Germany
| | - Christa E Müller
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn , An der Immenburg 4, D-53121 Bonn, Germany
| | - Da-Woon Jung
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| | - Yong-Chul Kim
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea.,Department of Medical System Engineering, Gwangju Institute of Science and Technology (GIST) , Gwangju 500-712, Republic of Korea
| |
Collapse
|
123
|
Phelan JP, Reen FJ, Dunphy N, O'Connor R, O'Gara F. Bile acids destabilise HIF-1α and promote anti-tumour phenotypes in cancer cell models. BMC Cancer 2016; 16:476. [PMID: 27416726 PMCID: PMC4946243 DOI: 10.1186/s12885-016-2528-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 07/06/2016] [Indexed: 12/22/2022] Open
Abstract
Background The role of the microbiome has become synonymous with human health and disease. Bile acids, as essential components of the microbiome, have gained sustained credibility as potential modulators of cancer progression in several disease models. At physiological concentrations, bile acids appear to influence cancer phenotypes, although conflicting data surrounds their precise physiological mechanism of action. Previously, we demonstrated bile acids destabilised the HIF-1α subunit of the Hypoxic-Inducible Factor-1 (HIF-1) transcription factor. HIF-1 overexpression is an early biomarker of tumour metastasis and is associated with tumour resistance to conventional therapies, and poor prognosis in a range of different cancers. Methods Here we investigated the effects of bile acids on the cancer growth and migratory potential of cell lines where HIF-1α is known to be active under hypoxic conditions. HIF-1α status was investigated in A-549 lung, DU-145 prostate and MCF-7 breast cancer cell lines exposed to bile acids (CDCA and DCA). Cell adhesion, invasion, migration was assessed in DU-145 cells while clonogenic growth was assessed in all cell lines. Results Intracellular HIF-1α was destabilised in the presence of bile acids in all cell lines tested. Bile acids were not cytotoxic but exhibited greatly reduced clonogenic potential in two out of three cell lines. In the migratory prostate cancer cell line DU-145, bile acids impaired cell adhesion, migration and invasion. CDCA and DCA destabilised HIF-1α in all cells and significantly suppressed key cancer progression associated phenotypes; clonogenic growth, invasion and migration in DU-145 cells. Conclusions These findings suggest previously unobserved roles for bile acids as physiologically relevant molecules targeting hypoxic tumour progression.
Collapse
Affiliation(s)
- J P Phelan
- BIOMERIT Research Centre, School of Microbiology, University College Cork - National University of Ireland, Cork, Ireland
| | - F J Reen
- BIOMERIT Research Centre, School of Microbiology, University College Cork - National University of Ireland, Cork, Ireland
| | - N Dunphy
- BIOMERIT Research Centre, School of Microbiology, University College Cork - National University of Ireland, Cork, Ireland
| | - R O'Connor
- School of Biochemistry and Cell Biology, University College Cork - National University of Ireland, Cork, Ireland
| | - F O'Gara
- BIOMERIT Research Centre, School of Microbiology, University College Cork - National University of Ireland, Cork, Ireland. .,School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, 6102, Australia.
| |
Collapse
|
124
|
Grassi ML, Palma CDS, Thomé CH, Lanfredi GP, Poersch A, Faça VM. Proteomic analysis of ovarian cancer cells during epithelial-mesenchymal transition (EMT) induced by epidermal growth factor (EGF) reveals mechanisms of cell cycle control. J Proteomics 2016; 151:2-11. [PMID: 27394697 DOI: 10.1016/j.jprot.2016.06.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 05/20/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022]
Abstract
Epithelial to mesenchymal transition (EMT) is a well-orchestrated process that culminates with loss of epithelial phenotype and gain of a mesenchymal and migratory phenotype. EMT enhances cancer cell invasiveness and drug resistance, favoring metastasis. Dysregulation of transcription factors, signaling pathways, miRNAs and growth factors including EGF, TGF-beta and HGF can trigger EMT. In ovarian cancer, overexpression of the EGFR family is associated with more aggressive clinical behavior. Here, the ovarian adenocarcinoma cell line Caov-3 was induced to EMT with EGF in order to identify specific mechanisms controlled by this process. Caov-3 cells induced to EMT were thoroughly validated and a combination of subcellular proteome enrichment, GEL-LC-MS/MS and SILAC strategy allowed consistent proteome identification and quantitation. Protein network analysis of differentially expressed proteins highlighted regulation of metabolism and cell cycle. Activation of relevant signaling pathways, such as PI3K/Akt/mTOR and Ras/Erk MAPK, in response to EGF-induced EMT was validated. Also, EMT did not affected the proliferation rate of Caov-3 cells, but led to cell cycle arrest in G1 phase regulated by increased levels of p21Waf1/Cip1, independently of p53. Furthermore, a decrease in G1 and G2 checkpoint proteins was observed, supporting the involvement of EGF-induced EMT in cell cycle control. BIOLOGICAL SIGNIFICANCE Cancer is a complex multistep process characterized by accumulation of several hallmarks including epithelial to mesenchymal transition (EMT), which promotes cellular and microenvironmental changes resulting in invasion and migration to distant sites, favoring metastasis. EMT can be triggered by different extracellular stimuli, including growth factors such as EGF. In ovarian cancer, the most lethal gynecological cancer, overexpression of the EGFR family is associated with more aggressive clinical behavior, increasing mortality rate caused by metastasis. Our proteomic data, together with specific validation of specific cellular mechanisms demonstrated that EGF-induced EMT in Caov-3 cells leads to important alterations in metabolic process (protein synthesis) and cell cycle control, supporting the implication of EGF/EMT in cancer metastasis, cancer stem cell generation and, therefore, poor prognosis for the disease.
Collapse
Affiliation(s)
- Mariana Lopes Grassi
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Cell-Based Therapy Center, Ribeirão Preto Blood Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Camila de Souza Palma
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Cell-Based Therapy Center, Ribeirão Preto Blood Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carolina Hassibe Thomé
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Cell-Based Therapy Center, Ribeirão Preto Blood Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Guilherme Pauperio Lanfredi
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Cell-Based Therapy Center, Ribeirão Preto Blood Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Aline Poersch
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Vitor Marcel Faça
- Dept. Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Cell-Based Therapy Center, Ribeirão Preto Blood Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.
| |
Collapse
|
125
|
Cunniff B, McKenzie AJ, Heintz NH, Howe AK. AMPK activity regulates trafficking of mitochondria to the leading edge during cell migration and matrix invasion. Mol Biol Cell 2016; 27:2662-74. [PMID: 27385336 PMCID: PMC5007087 DOI: 10.1091/mbc.e16-05-0286] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 06/26/2016] [Indexed: 01/06/2023] Open
Abstract
Mitochondria infiltrate leading edge lamellipodia, increasing local mitochondrial mass and relative ATP concentration. AMPK regulates infiltration of mitochondria into the leading edge of 2D lamellipodia and 3D invadopodia, coupling local metabolic sensing to subcellular targeting of mitochondria during cell movement. Cell migration is a complex behavior involving many energy-expensive biochemical events that iteratively alter cell shape and location. Mitochondria, the principal producers of cellular ATP, are dynamic organelles that fuse, divide, and relocate to respond to cellular metabolic demands. Using ovarian cancer cells as a model, we show that mitochondria actively infiltrate leading edge lamellipodia, thereby increasing local mitochondrial mass and relative ATP concentration and supporting a localized reversal of the Warburg shift toward aerobic glycolysis. This correlates with increased pseudopodial activity of the AMP-activated protein kinase (AMPK), a critically important cellular energy sensor and metabolic regulator. Furthermore, localized pharmacological activation of AMPK increases leading edge mitochondrial flux, ATP content, and cytoskeletal dynamics, whereas optogenetic inhibition of AMPK halts mitochondrial trafficking during both migration and the invasion of three-dimensional extracellular matrix. These observations indicate that AMPK couples local energy demands to subcellular targeting of mitochondria during cell migration and invasion.
Collapse
Affiliation(s)
- Brian Cunniff
- Department of Pathology, University of Vermont, Burlington, VT 05405 University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405
| | - Andrew J McKenzie
- University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405 Department of Pharmacology, University of Vermont, Burlington, VT 05405
| | - Nicholas H Heintz
- Department of Pathology, University of Vermont, Burlington, VT 05405 University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405
| | - Alan K Howe
- University of Vermont Cancer Center, University of Vermont, Burlington, VT 05405 Department of Pharmacology, University of Vermont, Burlington, VT 05405
| |
Collapse
|
126
|
Liu X, Duan H, Zhou S, Liu Z, Wu D, Zhao T, Xu S, Yang L, Li D. microRNA-199a-3p functions as tumor suppressor by regulating glucose metabolism in testicular germ cell tumors. Mol Med Rep 2016; 14:2311-20. [PMID: 27432288 DOI: 10.3892/mmr.2016.5472] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 05/25/2016] [Indexed: 12/24/2022] Open
Abstract
microRNA (miR)-199a-3p serves critical roles in cancer development and progression. In order to improve knowledge of the functional mechanism of miR‑199a‑3p in testicular tumors, the present study characterized the regulation of aerobic glycolysis by miR‑199a‑3p and its impact on metabolism. Using 3‑4,5‑dimethylthiazol‑2‑yl‑2,5 diphenyl tetrazolium bromide, wound healing and flow cytometry assays, it was determined that overexpression of miR‑199a‑3p in Ntera‑2 cells caused suppression of cell growth and migration. Further biochemical methods and high‑throughput quantitative polymerase chain reaction array of metabolic genes showed that inhibition of miR‑199a‑3p markedly elevated lactate production and 12 differentially expressed genes, including 2 upregulated and 10 downregulated genes, were identified following treatment with miR‑199a‑3p in Ntera‑2 cells. In clinical samples, four selected genes, lactate dehydrogenase A, monocarboxylate transporter 1, phosphoglycerate kinase 1 and TP53‑inducible glycolysis and apoptosis regulator, were significantly overexpressed in malignant testicular germ cell tumor, and their expression inversely correlated with the expression of miR‑199a‑3p, suggesting that these four genes may be affected by miR‑199a‑3p. Using bioinformatics analysis, the transcription factor Sp1 binding site was identified in the promoter region of the four selected genes. In addition, miR‑199a‑3p was predicted to bind to conservative target sequences in the 3'‑untranslated region of Sp1 mRNA, suggesting that miR-199a-3p may downregulate these four metabolic genes through Sp1. It was demonstrated the dysregulated expression and activation of miR‑199a‑3p may serve important roles in aerobic glycolysis and tumorigenesis in patients with testicular cancer. Therefore, miR-199a-3p may be a potential biomarker in the prognosis and treatment of testicular tumors.
Collapse
Affiliation(s)
- Xiaowen Liu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Hongyan Duan
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Shihua Zhou
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Zhiyong Liu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Daobing Wu
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Ting Zhao
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| | - Shan Xu
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Lifang Yang
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Dan Li
- Department of Life Science, College of Biology, Hunan University, Changsha, Hunan 410082, P.R. China
| |
Collapse
|
127
|
Abrogating cholesterol esterification suppresses growth and metastasis of pancreatic cancer. Oncogene 2016; 35:6378-6388. [PMID: 27132508 PMCID: PMC5093084 DOI: 10.1038/onc.2016.168] [Citation(s) in RCA: 194] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 03/20/2016] [Accepted: 03/22/2016] [Indexed: 12/27/2022]
Abstract
Cancer cells are known to execute reprogramed metabolism of glucose, amino acids and lipids. Here, we report a significant role of cholesterol metabolism in cancer metastasis. By using label-free Raman spectromicroscopy, we found an aberrant accumulation of cholesteryl ester in human pancreatic cancer specimens and cell lines, mediated by acyl-CoA cholesterol acyltransferase-1 (ACAT-1) enzyme. Expression of ACAT-1 showed a correlation with poor patient survival. Abrogation of cholesterol esterification, either by an ACAT-1 inhibitor or by shRNA knockdown, significantly suppressed tumor growth and metastasis in an orthotopic mouse model of pancreatic cancer. Mechanically, ACAT-1 inhibition increased intracellular free cholesterol level, which was associated with elevated endoplasmic reticulum stress and caused apoptosis. Collectively, our results demonstrate a new strategy for treating metastatic pancreatic cancer by inhibiting cholesterol esterification.
Collapse
|
128
|
Hussain A, Qazi AK, Mupparapu N, Guru SK, Kumar A, Sharma PR, Singh SK, Singh P, Dar MJ, Bharate SB, Zargar MA, Ahmed QN, Bhushan S, Vishwakarma RA, Hamid A. Modulation of glycolysis and lipogenesis by novel PI3K selective molecule represses tumor angiogenesis and decreases colorectal cancer growth. Cancer Lett 2016; 374:250-60. [DOI: 10.1016/j.canlet.2016.02.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/13/2016] [Accepted: 02/16/2016] [Indexed: 12/26/2022]
|
129
|
Unique fractal evaluation and therapeutic implications of mitochondrial morphology in malignant mesothelioma. Sci Rep 2016; 6:24578. [PMID: 27080907 PMCID: PMC4832330 DOI: 10.1038/srep24578] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/30/2016] [Indexed: 12/15/2022] Open
Abstract
Malignant mesothelioma (MM), is an intractable disease with limited therapeutic options and grim survival rates. Altered metabolic and mitochondrial functions are hallmarks of MM and most other cancers. Mitochondria exist as a dynamic network, playing a central role in cellular metabolism. MM cell lines display a spectrum of altered mitochondrial morphologies and function compared to control mesothelial cells. Fractal dimension and lacunarity measurements are a sensitive and objective method to quantify mitochondrial morphology and most importantly are a promising predictor of response to mitochondrial inhibition. Control cells have high fractal dimension and low lacunarity and are relatively insensitive to mitochondrial inhibition. MM cells exhibit a spectrum of sensitivities to mitochondrial inhibitors. Low mitochondrial fractal dimension and high lacunarity correlates with increased sensitivity to the mitochondrial inhibitor metformin. Lacunarity also correlates with sensitivity to Mdivi-1, a mitochondrial fission inhibitor. MM and control cells have similar sensitivities to cisplatin, a chemotherapeutic agent used in the treatment of MM. Neither oxidative phosphorylation nor glycolytic activity, correlated with sensitivity to either metformin or mdivi-1. Our results suggest that mitochondrial inhibition may be an effective and selective therapeutic strategy in mesothelioma, and identifies mitochondrial morphology as a possible predictor of response to targeted mitochondrial inhibition.
Collapse
|
130
|
Zhang Y, Liu G, Wu S, Jiang F, Xie J, Wang Y. Zinc finger E-box-binding homeobox 1: its clinical significance and functional role in human thyroid cancer. Onco Targets Ther 2016; 9:1303-10. [PMID: 27099512 PMCID: PMC4820193 DOI: 10.2147/ott.s96723] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Objective Transcription factor zinc finger E-box-binding homeobox 1 (ZEB1), as one of the key inducers of epithelial-mesenchymal transition, has been reported to be regulated by microRNA-144 and Bcl-2-associated athanogene 3, which both promote thyroid cancer cell invasion. However, the involvement of ZEB1 in thyroid cancer has not been fully elucidated. In this study, we aimed to investigate the role and clinical implication of ZEB1 in this disease. Methods Immunohistochemistry was performed to examine the subcellular localization and the expression level of ZEB1 protein in 82 self-pairs of formalin-fixed and paraffin-embedded cancerous and adjacent noncancerous tissues obtained from patients with thyroid cancer. The roles of ZEB1 in thyroid cancer cell migration, invasion, and proliferation were also detected by transwell and MTT analyses, respectively. Results Immunohistochemistry showed that ZEB1 was predominantly localized in the nucleus of thyroid cancer cells. Its immunoreactive score in thyroid cancer tissues was significantly higher than that in adjacent noncancerous tissues (P=0.01). In addition, ZEB1 overexpression was significantly associated with the advanced tumor node metastasis staging (P=0.008), the positive lymph node metastasis (P=0.01) and distant metastasis (P=0.02). Furthermore, ZEB1 knockdown by siRNA could efficiently inhibit the migration, invasion, and proliferation abilities of thyroid cancer cells in vitro. Conclusion These findings indicated that ZEB1 might function as an oncogene, the overexpression of which was associated with the aggressive tumor progression of human thyroid cancer. Interestingly, ZEB1 also could promote thyroid cancer cell migration, invasion, and proliferation, suggesting that the inhibition of this protein might be a therapeutic strategy for the treatment of this malignancy.
Collapse
Affiliation(s)
- Yan Zhang
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| | - Gang Liu
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| | - Shihe Wu
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| | - Futing Jiang
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| | - Jiangping Xie
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| | - Yuhong Wang
- Department of General Surgery, Navy General Hospital of Chinese PLA, Beijing, People's Republic of China
| |
Collapse
|
131
|
Zhang D, Fei Q, Li J, Zhang C, Sun Y, Zhu C, Wang F, Sun Y. 2-Deoxyglucose Reverses the Promoting Effect of Insulin on Colorectal Cancer Cells In Vitro. PLoS One 2016; 11:e0151115. [PMID: 26939025 PMCID: PMC4777557 DOI: 10.1371/journal.pone.0151115] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/22/2016] [Indexed: 12/20/2022] Open
Abstract
An increased risk of colorectal cancer is related to the development of metabolic syndromes including hyperglycemia, and hyperinsulinemia. The high circulatory levels of glucose and/or insulin or the application of exogenous insulin may promote carcinogenesis, cancer progression and metastasis, which can be attributed to the Warburg effect or aerobic glycolysis. We attempted to resolve these existing questions by applying the glucose analog 2-deoxyglucose (2DG). According to the in vitro studies we performed, the glycolysis of colorectal cancer cells could be interrupted by 2DG as it decreased the cellular productions of ATP and lactate. In addition, 2DG induced apoptosis and cell cycle arrest, and inhibited proliferation, migration and invasion of these cells. Since insulin can stimulate the cellular uptake of hexose, including 2DG, the combination of 2DG and insulin improved the cytotoxicity of 2DG and meanwhile overcame the cancer-promoting effects of insulin. This in vitro study provided a viewpoint of 2DG as a potential therapeutic agent against colorectal cancer, especially for patients with concomitant hyperinsulinemia or treated with exogenous insulin.
Collapse
Affiliation(s)
- Dongsheng Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qiang Fei
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Juan Li
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chuan Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ye Sun
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chunyan Zhu
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Fengzhen Wang
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yueming Sun
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail:
| |
Collapse
|
132
|
Tam IS, Giguère V. There and back again: The journey of the estrogen-related receptors in the cancer realm. J Steroid Biochem Mol Biol 2016; 157:13-9. [PMID: 26151739 DOI: 10.1016/j.jsbmb.2015.06.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 06/09/2015] [Accepted: 06/16/2015] [Indexed: 12/21/2022]
Abstract
The identification of two genes encoding polypeptides with structural features common with the estrogen receptor more than a quarter century ago, referred to as the estrogen-related receptors (ERRs), subsequently led to the discovery of several previously unrecognized hormone responsive systems through the application of reverse endocrinology. Paradoxically, the natural ligand(s) associated with members of the ERR subfamily remains to be identified. While initial studies on the mode of action and physiological functions of the ERRs focused on interaction with estrogen signalling in breast cancer, subsequent work showed that the ERRs are ubiquitous master regulators of cellular energy metabolism. This review aims to demonstrate that the ERRs occupy a central node at the interface of cancer and metabolism, and that modulation of their activity may represent a worthwhile strategy to induce metabolic vulnerability in tumors of various origins and thus achieve a more comprehensive response to current therapies.
Collapse
Affiliation(s)
- Ingrid S Tam
- Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Montréal, QC H3A 1A3, Canada
| | - Vincent Giguère
- Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Montréal, QC H3A 1A3, Canada; Departments of Biochemistry, Medicine and Oncology, McGill University, Montréal, PQ H3G 1Y6, Canada.
| |
Collapse
|
133
|
Jayachandran A, Lo PH, Chueh AC, Prithviraj P, Molania R, Davalos-Salas M, Anaka M, Walkiewicz M, Cebon J, Behren A. Transketolase-like 1 ectopic expression is associated with DNA hypomethylation and induces the Warburg effect in melanoma cells. BMC Cancer 2016; 16:134. [PMID: 26907172 PMCID: PMC4763451 DOI: 10.1186/s12885-016-2185-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 02/16/2016] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND The metabolism of cancer cells is often reprogrammed by dysregulation of metabolic enzymes. Transketolase-like 1 (TKTL1) is a homodimeric transketolase linking the pentose-phosphate pathway with the glycolytic pathway. It is generally silenced at a transcriptional level in somatic tissues. However, in human cancers its expression is associated with the acquisition of a glycolytic phenotype (the Warburg effect) by cancer cells that contributes to the progression of malignant tumors. In melanoma, defective promoter methylation results in the expression of genes and their products that can affect the tumor cell's phenotype including the modification of immune and functional characteristics. The present study evaluates the role of TKTL1 as a mediator of disease progression in melanoma associated with a defective methylation phenotype. METHODS The expression of TKTL1 in metastatic melanoma tumors and cell lines was analysed by qRT-PCR and immunohistochemistry. The promoter methylation status of TKTL1 in melanoma cells was evaluated by quantitative methylation specific PCR. Using qRT-PCR, the effect of a DNA demethylating agent 5-aza-2'-deoxycytidine (5aza) on the expression of TKTL1 was examined. Biochemical and molecular analyses such as glucose consumption, lactate production, invasion, proliferation and cell cycle progression together with ectopic expression and siRNA mediated knockdown were used to investigate the role of TKTL1 in melanoma cells. RESULTS Expression of TKTL1 was highly restricted in normal adult tissues and was overexpressed in a subset of metastatic melanoma tumors and derived cell lines. The TKTL1 promoter was activated by hypomethylation and treatment with 5aza induced TKTL1 expression in melanoma cells. Augmented expression of TKTL1 in melanoma cells was associated with a glycolytic phenotype. Loss and gain of function studies revealed that TKTL1 contributed to enhanced invasion of melanoma cells. CONCLUSIONS Our data provide evidence for an important role of TKTL1 in aerobic glycolysis and tumor promotion in melanoma that may result from defective promoter methylation. This epigenetic change may enable the natural selection of tumor cells with a metabolic phenotype and thereby provide a potential therapeutic target for a subset of melanoma tumors with elevated TKTL1 expression.
Collapse
Affiliation(s)
- Aparna Jayachandran
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Cancer Medicine, Latrobe University, Melbourne, VIC, 3086, Australia.,School of Medicine and the Gallipoli Medical Research Foundation, The University of Queensland, Brisbane, QLD 4120, Australia
| | - Pu-Han Lo
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia
| | - Anderly C Chueh
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Melbourne, 3010, Australia
| | - Prashanth Prithviraj
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Ramyar Molania
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia
| | - Mercedes Davalos-Salas
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia
| | - Matthew Anaka
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Marzena Walkiewicz
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia
| | - Jonathan Cebon
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, 3010, Australia.,School of Cancer Medicine, Latrobe University, Melbourne, VIC, 3086, Australia
| | - Andreas Behren
- Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, VIC, 3084, Australia. .,Olivia Newton-John Cancer Research Institute, Heidelberg, VIC, 3084, Australia. .,Department of Medicine, University of Melbourne, Melbourne, VIC, 3010, Australia. .,School of Cancer Medicine, Latrobe University, Melbourne, VIC, 3086, Australia. .,Cancer Immuno-biology Laboratory, Olivia Newton-John Cancer Research Institute, Level 5, Olivia Newton-John Cancer and Wellness Centre, 145 Studley Road, Heidelberg, VIC, 3084, Australia.
| |
Collapse
|
134
|
Zhang T, Hu Y, Ju J, Hou L, Li Z, Xiao D, Li Y, Yao J, Wang C, Zhang Y, Zhang L. Downregulation of miR-522 suppresses proliferation and metastasis of non-small cell lung cancer cells by directly targeting DENN/MADD domain containing 2D. Sci Rep 2016; 6:19346. [PMID: 26783084 PMCID: PMC4726064 DOI: 10.1038/srep19346] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/07/2015] [Indexed: 12/17/2022] Open
Abstract
Non-small cell lung cancer (NSCLC), one of the most common causes of cancer-related death, is a worldwide public health problem. MicroRNAs (miRNAs) have recently been identified as a novel class of regulators of carcinogenesis and tumor progression, including miRNAs associated with NSCLC. This study aimed to explore the role of miR-522 in NSCLC and the mechanisms underlying this role. We report here that miR-522 expression was significantly increased in both human NSCLC tissues and cell lines. Furthermore, an MTT assay, 5-Ethynyl-2′-deoxyuridine (EdU) assay kit and flow cytometry confirmed that the inhibition of miR-522 suppressed NSCLC cells proliferation and induced apoptosis. Compared with miR-522 overexpression, miR-522 inhibitor markedly reduced cells migration and invasion, as indicated by wound-healing and transwell assays. In addition, a luciferase assay identified DENN/MADD domain containing 2D (DENND2D) as a direct target of miR-522. qRT-PCR and western blot analyses indicated the reciprocal expression of miR-522 and DENND2D in NSCLC tissue samples. DENND2D was involved in miR-522 induced proliferation and metastasis of NSCLC cells by a miRNA-masking antisense oligonucleotides (miR-mask) technology. These data highlight a novel molecular interaction between miR-522 and DENND2D, which indicates that targeting miR-522 may constitute a potential therapy for NSCLC.
Collapse
Affiliation(s)
- Tianze Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Yingying Hu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China.,Department of Pharmacy, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Jin Ju
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China
| | - Liangyu Hou
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China
| | - Zhange Li
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China
| | - Dan Xiao
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China
| | - Yongchao Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Jianyu Yao
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Chao Wang
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Yong Zhang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine- Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin 150081, China
| | - Linyou Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| |
Collapse
|
135
|
Qiu P, Man S, Yang H, Liu Y, Liu Z, Ma L, Yu P, Gao W. Metabolic regulatory network alterations reveal different therapeutic effects of cisplatin and Rhizoma paridis saponins in Lewis pulmonary adenoma mice. RSC Adv 2016. [DOI: 10.1039/c6ra23382a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Metabonomics is used to compare the metabolic profiling of RPS and DDP in Lewis pulmonary adenoma mice; RPS is found to be a potent anticancer agent through inhibiting cancer cellular metabolism to suppress metastases in murine lung adenocarcinoma.
Collapse
Affiliation(s)
- Peiyu Qiu
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - Shuli Man
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - He Yang
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - Yuanxue Liu
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin
- China
| | - Zhen Liu
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - Long Ma
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - Peng Yu
- Key Laboratory of Industrial Microbiology
- Ministry of Education
- Tianjin Key Laboratory of Industry Microbiology
- National and Local United Engineering Lab of Metabolic Control Fermentation Technology
- College of Biotechnology
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin
- China
| |
Collapse
|
136
|
RRAD inhibits aerobic glycolysis, invasion, and migration and is associated with poor prognosis in hepatocellular carcinoma. Tumour Biol 2015; 37:5097-105. [PMID: 26546438 DOI: 10.1007/s13277-015-4329-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/26/2015] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most prevalent and lethal cancer worldwide. However, the mechanism underlying the HCC development remains unclear. Ras-related associated with diabetes (RRAD) is a small Ras-related GTPase which has been implicated in metabolic disease and several types of cancer, yet its functions in HCC remain unknown. A tissue microarray constructed by 90 paired HCC tissues and adjacent non-cancerous liver tissues was used to examine the protein levels of RRAD, and the messenger RNA (mRNA) expression of RRAD was also detected in a subset of this cohort. The prognostic significance of RRAD was estimated by the Kaplan-Meier analysis and Cox regression. The glucose utilization assay and lactate production assay were performed to measure the role of RRAD in HCC glycolysis. The effect of RRAD in HCC invasion and metastasis was analyzed by transwell assays. Our results suggested that the expression of RRAD was downregulated in HCC tissues compared to the adjacent non-tumorous liver tissues both in mRNA and protein levels and lower RRAD expression served as an independent prognostic indicator for the survival of HCC patients. Moreover, RRAD inhibited hepatoma cell aerobic glycolysis by negatively regulating the expression of glucose transporter 1 (GLUT1) and hexokinase II (HK-II). In addition, RRAD inhibition dramatically increased hepatoma cell invasion and metastasis. In conclusion, our study revealed that RRAD expression was decreased in HCC tumor tissues and predicted poor clinical outcome for HCC patients and played an important role in regulating aerobic glycolysis and cell invasion and metastasis and may represent potential targets for improving the treatment of HCC.
Collapse
|
137
|
Yoshida GJ. Metabolic reprogramming: the emerging concept and associated therapeutic strategies. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2015; 34:111. [PMID: 26445347 PMCID: PMC4595070 DOI: 10.1186/s13046-015-0221-y] [Citation(s) in RCA: 413] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 09/11/2015] [Indexed: 12/15/2022]
Abstract
Tumor tissue is composed of cancer cells and surrounding stromal cells with diverse genetic/epigenetic backgrounds, a situation known as intra-tumoral heterogeneity. Cancer cells are surrounded by a totally different microenvironment than that of normal cells; consequently, tumor cells must exhibit rapidly adaptive responses to hypoxia and hypo-nutrient conditions. This phenomenon of changes of tumor cellular bioenergetics, called “metabolic reprogramming”, has been recognized as one of 10 hallmarks of cancer. Metabolic reprogramming is required for both malignant transformation and tumor development, including invasion and metastasis. Although the Warburg effect has been widely accepted as a common feature of metabolic reprogramming, accumulating evidence has revealed that tumor cells depend on mitochondrial metabolism as well as aerobic glycolysis. Remarkably, cancer-associated fibroblasts in tumor stroma tend to activate both glycolysis and autophagy in contrast to neighboring cancer cells, which leads to a reverse Warburg effect. Heterogeneity of monocarboxylate transporter expression reflects cellular metabolic heterogeneity with respect to the production and uptake of lactate. In tumor tissue, metabolic heterogeneity induces metabolic symbiosis, which is responsible for adaptation to drastic changes in the nutrient microenvironment resulting from chemotherapy. In addition, metabolic heterogeneity is responsible for the failure to induce the same therapeutic effect against cancer cells as a whole. In particular, cancer stem cells exhibit several biological features responsible for resistance to conventional anti-tumor therapies. Consequently, cancer stem cells tend to form minimal residual disease after chemotherapy and exhibit metastatic potential with additional metabolic reprogramming. This type of altered metabolic reprogramming leads to adaptive/acquired resistance to anti-tumor therapy. Collectively, complex and dynamic metabolic reprogramming should be regarded as a reflection of the “robustness” of tumor cells against unfavorable conditions. This review focuses on the concept of metabolic reprogramming in heterogeneous tumor tissue, and further emphasizes the importance of developing novel therapeutic strategies based on drug repositioning.
Collapse
Affiliation(s)
- Go J Yoshida
- Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan. .,Department of Pathological Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
| |
Collapse
|
138
|
Mosadegh B, Lockett MR, Minn KT, Simon KA, Gilbert K, Hillier S, Newsome D, Li H, Hall AB, Boucher DM, Eustace BK, Whitesides GM. A paper-based invasion assay: Assessing chemotaxis of cancer cells in gradients of oxygen. Biomaterials 2015; 52:262-71. [DOI: 10.1016/j.biomaterials.2015.02.012] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 01/29/2015] [Accepted: 02/01/2015] [Indexed: 02/07/2023]
|
139
|
He TL, Zhang YJ, Jiang H, Li XH, Zhu H, Zheng KL. The c-Myc-LDHA axis positively regulates aerobic glycolysis and promotes tumor progression in pancreatic cancer. Med Oncol 2015; 32:187. [PMID: 26021472 PMCID: PMC4452209 DOI: 10.1007/s12032-015-0633-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 05/06/2015] [Indexed: 12/21/2022]
Abstract
The transcription factor c-Myc plays critical roles in cancer development and progression through regulating expression of targeted genes. Lactate dehydrogenase A (LDHA), which catalyzes the conversion of L-lactate to pyruvate in the final step of anaerobic glycolysis, is frequently upregulated in pancreatic cancer. However, little is known about the effects of c-Myc-LDHA axis in the progression of pancreatic cancer. In this study, we found that c-Myc and LDHA are concomitantly overexpressed in pancreatic cancer cell lines and clinical specimens. c-Myc overexpression and LDHA overexpression were correlated with TNM stage and tumor size and indicated poor prognosis in patients with pancreatic cancer. Knockdown of c-Myc reduced the protein expression of LDHA, lactate production and glucose consumption, and silencing of LDHA mimicked this effect. Meanwhile, reduced c-Myc-LDHA signaling resulted in decreased tumor growth and metastasis in pancreatic cancer. Treatment with 2-Deoxy-D-glucose, an inhibitor of anaerobic glycolysis, completely blocked the oncogenic roles of c-Myc-LDHA signaling. Taken together, dysregulated c-Myc-LDHA signaling plays important roles in aerobic glycolysis and facilitates tumor progression of pancreatic cancer.
Collapse
Affiliation(s)
- Tian-Lin He
- />Department of Pancreatic Surgery, Changhai Hospital, Second Military Medical University, 168#, Changhai Road, Shanghai, 200433 China
| | - Yi-Jie Zhang
- />Department of Pancreatic Surgery, Changhai Hospital, Second Military Medical University, 168#, Changhai Road, Shanghai, 200433 China
| | - Hui Jiang
- />Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai, 200433 China
| | - Xiao-hui Li
- />Department of Oncological Surgery, Jiaozuo People’s Hospital, Jiaozuo, 454002 China
| | - Hai Zhu
- />Safety and Evaluation Center of the Drug, Second Military Medical University, Shanghai, 200433 China
| | - Kai-Lian Zheng
- />Department of Pancreatic Surgery, Changhai Hospital, Second Military Medical University, 168#, Changhai Road, Shanghai, 200433 China
| |
Collapse
|
140
|
Xian ZY, Liu JM, Chen QK, Chen HZ, Ye CJ, Xue J, Yang HQ, Li JL, Liu XF, Kuang SJ. Inhibition of LDHA suppresses tumor progression in prostate cancer. Tumour Biol 2015; 36:8093-100. [PMID: 25983002 PMCID: PMC4605959 DOI: 10.1007/s13277-015-3540-x] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 05/06/2015] [Indexed: 12/20/2022] Open
Abstract
A key hallmark of cancer cells is their altered metabolism, known as Warburg effect. Lactate dehydrogenase A (LDHA) executes the final step of aerobic glycolysis and has been reported to be involved in the tumor progression. However, the function of LDHA in prostate cancer has not been studied. In current study, we observed overexpression of LDHA in the clinical prostate cancer samples compared with benign prostate hyperplasia tissues as demonstrated by immunohistochemistry and real-time qPCR. Attenuated expression of LDHA by siRNA or inhibition of LDHA activities by FX11 inhibited cell proliferation, migration, invasion, and promoted cell apoptosis of PC-3 and DU145 cells. Mechanistically, decreased Warburg effect as demonstrated by reduced glucose consumption and lactate secretion and reduced expression of MMP-9, PLAU, and cathepsin B were found after LDHA knockdown or FX11 treatment in PC-3 and DU145 cells. Taken together, our study revealed the oncogenic role of LDHA in prostate cancer and suggested that LDHA might be a potential therapeutic target.
Collapse
Affiliation(s)
- Zhi-Yong Xian
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China.
| | - Jiu-Min Liu
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China
| | - Qing-Ke Chen
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China
| | - Han-Zhong Chen
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China
| | - Chu-Jin Ye
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China
| | - Jian Xue
- Department of Urology, Sihui City People's Hospital, Guangdong, China
| | - Huan-Qing Yang
- Department of Urology, Guangdong General Hospital, 106 Zhongshan Second Road, Yuexiu District, Guangdong, China
| | - Jing-Lei Li
- Department of Radiology, Guangdong General Hospital, Guangdong, China
| | - Xue-Feng Liu
- Department of Pathology, Guangdong General Hospital, Guangdong, China
| | - Su-Juan Kuang
- Department of Medical Experimental Center, Guangdong General Hospital, Guangdong, China
| |
Collapse
|
141
|
Schaal C, Pillai S, Chellappan SP. The Rb-E2F transcriptional regulatory pathway in tumor angiogenesis and metastasis. Adv Cancer Res 2015; 121:147-182. [PMID: 24889531 DOI: 10.1016/b978-0-12-800249-0.00004-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The retinoblastoma tumor suppressor protein Rb plays a major role in regulating G1/S transition and is a critical regulator of cell proliferation. Rb protein exerts its growth regulatory properties mainly by physically interacting with the transcriptionally active members of the E2F transcription factor family, especially E2Fs 1, 2, and 3. Given its critical role in regulating cell proliferation, it is not surprising that Rb is inactivated in almost all tumors, either through the mutation of Rb gene itself or through the mutations of its upstream regulators including K-Ras and INK4. Recent studies have revealed a significant role for Rb and its downstream effectors, especially E2Fs, in regulating various aspects of tumor progression, angiogenesis, and metastasis. Thus, components of the Rb-E2F pathway have been shown to regulate the expression of genes involved in angiogenesis, including VEGF and VEGFR, genes involved in epithelial-mesenchymal transition including E-cadherin and ZEB proteins, and genes involved in invasion and migration like matrix metalloproteinases. Rb has also been shown to play a major role in the functioning of normal and cancer stem cells; further, Rb and E2F appear to play a regulatory role in the energy metabolism of cancer cells. These findings raise the possibility that mutational events that initiate tumorigenesis by inducing uncontrolled cell proliferation might also contribute to the progression and metastasis of cancers through the mediation of the Rb-E2F transcriptional regulatory pathway. This review highlights these recent studies on tumor promoting functions of the Rb-E2F pathway.
Collapse
Affiliation(s)
- Courtney Schaal
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Smitha Pillai
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Srikumar P Chellappan
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA.
| |
Collapse
|
142
|
Wei Y, Vellanki RN, Coyaud É, Ignatchenko V, Li L, Krieger JR, Taylor P, Tong J, Pham NA, Liu G, Raught B, Wouters BG, Kislinger T, Tsao MS, Moran MF. CHCHD2 Is Coamplified with EGFR in NSCLC and Regulates Mitochondrial Function and Cell Migration. Mol Cancer Res 2015; 13:1119-29. [DOI: 10.1158/1541-7786.mcr-14-0165-t] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 03/07/2015] [Indexed: 11/16/2022]
|
143
|
Bugan I, Altun S. Inhibitory effects of dunning rat prostate tumor fluid on proliferation of the metastatic MAT-LyLu cell line. Asian Pac J Cancer Prev 2015; 16:831-6. [PMID: 25684533 DOI: 10.7314/apjcp.2015.16.2.831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Tumor fluid accumulation occurs in both human cancer and experimental tumor models. Solid tumors show a tendency to tumor fluid accumulation because of their anatomical and physiological features and this may be influenced by molecular factors. Fluid accumulation in the peri-tumor area also occurs in the Dunning model of rat prostate cancer as the tumor grows. In this study, the effects of tumor fluids that were obtained from Dunning prostate tumor-bearing Copenhagen rats on the strongly metastatic MAT-LyLu cell line were investigatedby examining the cell's migration and tumor fluid's toxicity and the kinetic parameters such as cell proliferation, mitotic index, and labelling index. In this research, tumor fluids were obtained from rats injected with 25105 MAT- LyLu cells and treated with saline solution, and 200 nM tetrodotoxin (TTX), highly specific sodium channel blocker was used. Sterilized tumor fluids were added to medium of MAT-LyLu cells with the proportion of 20% in vitro. Consequently, it was demonstrated that Dunning rat prostate tumor fluid significantly inhibited proliferation (up to 50%), mitotic index, and labeling index of MAT-LyLu cells (up to 75%) (p<0.05) but stimulated the motility of the cells in vitro.
Collapse
Affiliation(s)
- Ilknur Bugan
- Department of Biology, Faculty of Science, Istanbul University, Istanbul, Turkey E-mail :
| | | |
Collapse
|