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https://www.readbyqxmd.com/read/27901115/p53-coordinates-dna-repair-with-nucleotide-synthesis-by-suppressing-pfkfb3-expression-and-promoting-the-pentose-phosphate-pathway
#1
Derek A Franklin, Yizhou He, Patrick L Leslie, Andrey P Tikunov, Nick Fenger, Jeffrey M Macdonald, Yanping Zhang
Activation of p53 in response to DNA damage is essential for tumor suppression. Although previous studies have emphasized the importance of p53-dependent cell cycle arrest and apoptosis for tumor suppression, recent studies have suggested that other areas of p53 regulation, such as metabolism and DNA damage repair (DDR), are also essential for p53-dependent tumor suppression. However, the intrinsic connections between p53-mediated DDR and metabolic regulation remain incompletely understood. Here, we present data suggesting that p53 promotes nucleotide biosynthesis in response to DNA damage by repressing the expression of the phosphofructokinase-2 (PFK2) isoform 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3), a rate-limiting enzyme that promotes glycolysis...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27884166/tigar-cooperated-with-glycolysis-to-inhibit-the-apoptosis-of-leukemia-cells-and-associated-with-poor-prognosis-in-patients-with-cytogenetically-normal-acute-myeloid-leukemia
#2
Sixuan Qian, Jianyong Li, Ming Hong, Yu Zhu, Huihui Zhao, Yue Xie, Jiayu Huang, Yun Lian, Yanru Li, Shuai Wang, Jianping Mao, Yaoyu Chen
BACKGROUND: Cancer cells show increased glycolysis and take advantage of this metabolic pathway to generate ATP. The TP53-induced glycolysis and apoptosis regulator (TIGAR) inhibits aerobic glycolysis and protects tumor cells from intracellular reactive oxygen species (ROS)-associated apoptosis. However, the function of TIGAR in glycolysis and survival of acute myeloid leukemia cells remains unclear. METHODS: We analyzed TIGAR expression in cytogenetically normal (CN-) AML patients and the correlations with clinical and biological parameters...
November 25, 2016: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/27866851/inhibition-of-the-glycolytic-activator-pfkfb3-in-endothelium-induces-tumor-vessel-normalization-impairs-metastasis-and-improves-chemotherapy
#3
Anna Rita Cantelmo, Lena-Christin Conradi, Aleksandra Brajic, Jermaine Goveia, Joanna Kalucka, Andreas Pircher, Pallavi Chaturvedi, Johanna Hol, Bernard Thienpont, Laure-Anne Teuwen, Sandra Schoors, Bram Boeckx, Joris Vriens, Anna Kuchnio, Koen Veys, Bert Cruys, Lise Finotto, Lucas Treps, Tor Espen Stav-Noraas, Francesco Bifari, Peter Stapor, Ilaria Decimo, Kim Kampen, Katrien De Bock, Guttorm Haraldsen, Luc Schoonjans, Ton Rabelink, Guy Eelen, Bart Ghesquière, Jalees Rehman, Diether Lambrechts, Asrar B Malik, Mieke Dewerchin, Peter Carmeliet
Abnormal tumor vessels promote metastasis and impair chemotherapy. Hence, tumor vessel normalization (TVN) is emerging as an anti-cancer treatment. Here, we show that tumor endothelial cells (ECs) have a hyper-glycolytic metabolism, shunting intermediates to nucleotide synthesis. EC haplo-deficiency or blockade of the glycolytic activator PFKFB3 did not affect tumor growth, but reduced cancer cell invasion, intravasation, and metastasis by normalizing tumor vessels, which improved vessel maturation and perfusion...
November 8, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27803158/tigar-metabolically-reprograms-carcinoma-and-stromal-cells-in-breast-cancer
#4
Ying-Hui Ko, Marina Domingo-Vidal, Megan Roche, Zhao Lin, Diana Whitaker-Menezes, Erin Seifert, Claudia Capparelli, Madalina Tuluc, Ruth C Birbe, Patrick Tassone, Joseph M Curry, Aurea Navarro-Sabate, Anna Manzano, Ramon Bartrons, Jaime Caro, Ubaldo Martinez-Outschoorn
A subgroup of breast cancers has several metabolic compartments. The mechanisms by which metabolic compartmentalization develop in tumors are poorly characterized. TP53 Inducible Glycolysis and Apoptosis Regulator (TIGAR) is a bisphosphatase, which reduces glycolysis and is highly expressed in carcinoma cells in the majority of human breast cancers. Hence we set out to determine the effects of TIGAR expression on breast carcinoma and fibroblast glycolytic phenotype and tumor growth. The overexpression of this bisphosphatase in carcinoma cells induces expression of enzymes and transporters involved in the catabolism of lactate and glutamine...
November 1, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27777982/a-molecular-signature-of-preclinical-rheumatoid-arthritis-triggered-by-dysregulated-ptpn22
#5
Hui-Hsin Chang, Guang-Yaw Liu, Nishant Dwivedi, Bo Sun, Yuko Okamoto, Jennifer D Kinslow, Kevin D Deane, M Kristen Demoruelle, Jill M Norris, Paul R Thompson, Jeffrey A Sparks, Deepak A Rao, Elizabeth W Karlson, Hui-Chih Hung, V Michael Holers, I-Cheng Ho
A unique feature of rheumatoid arthritis (RA) is the presence of anti-citrullinated protein antibodies (ACPA). Several risk factors for RA are known to increase the expression or activity of peptidyl arginine deiminases (PADs), which catalyze citrullination and, when dysregulated, can result in hypercitrullination. However, the consequence of hypercitrullination is unknown and the function of each PAD has yet to be defined. Th cells of RA patients are hypoglycolytic and hyperproliferative due to impaired expression of PFKFB3 and ATM, respectively...
October 20, 2016: JCI Insight
https://www.readbyqxmd.com/read/27682256/impact-of-heat-stress-on-cellular-and-transcriptional-adaptation-of-mammary-epithelial-cells-in-riverine-buffalo-bubalus-bubalis
#6
Neha Kapila, Ankita Sharma, Amit Kishore, Monika Sodhi, Pawan K Tripathi, Ashok K Mohanty, Manishi Mukesh
The present study aims to identify the heat responsive genes and biological pathways in heat stressed buffalo mammary epithelial cells (MECs). The primary mammary epithelial cells of riverine buffalo were exposed to thermal stress at 42°C for one hour. The cells were subsequently allowed to recover at 37°C and harvested at different time intervals (30 min to 48 h) along with control samples (un-stressed). In order to assess the impact of heat stress in buffalo MECs, several in-vitro cellular parameters (lactate dehydrogenase activity, cell proliferation assay, cellular viability, cell death and apoptosis) and transcriptional studies were conducted...
2016: PloS One
https://www.readbyqxmd.com/read/27669567/pfk15-a-small-molecule-inhibitor-of-pfkfb3-induces-cell-cycle-arrest-apoptosis-and-inhibits-invasion-in-gastric-cancer
#7
Wei Zhu, Liang Ye, Jianzhao Zhang, Pengfei Yu, Hongbo Wang, Zuguang Ye, Jingwei Tian
PFKFB3 (6-phosphofructo-2-kinase) synthesizes fructose 2,6-bisphosphate (F2,6P2), which is an allosteric activator of 6-phosphofructo-1-kinase (PFK-1), the rate-limiting enzyme of glycolysis. Overexpression of the PFKFB3 enzyme leads to high glycolytic metabolism, which is required for cancer cells to survive in the harsh tumor microenvironment. The objective of this study was to investigate the antitumor activity of PFK15 (1-(4-pyridinyl)-3-(2-quinolinyl)-2-propen-1-one), a small molecule inhibitor of PFKFB3, against gastric cancer and to explore its potential mechanisms...
2016: PloS One
https://www.readbyqxmd.com/read/27613609/inhibition-of-6-phosphofructo-2-kinase-pfkfb3-suppresses-glucose-metabolism-and-the-growth-of-her2-breast-cancer
#8
Julie O'Neal, Amy Clem, Lindsey Reynolds, Susan Dougherty, Yoannis Imbert-Fernandez, Sucheta Telang, Jason Chesney, Brian F Clem
PURPOSE: Human epidermal growth factor receptor-2 (HER2) has been implicated in the progression of multiple tumor types, including breast cancer, and many downstream effectors of HER2 signaling are primary regulators of cellular metabolism, including Ras and Akt. A key downstream metabolic target of Ras and Akt is the 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 isozyme (PFKFB3), whose product, fructose-2,6-bisphosphate (F26BP), is a potent allosteric activator of a rate-limiting enzyme in glycolysis, 6-phosphofructo-1-kinase (PFK-1)...
November 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27585591/ikk%C3%AE-promotes-metabolic-adaptation-to-glutamine-deprivation-via-phosphorylation-and-inhibition-of-pfkfb3
#9
Michael A Reid, Xazmin H Lowman, Min Pan, Thai Q Tran, Marc O Warmoes, Mari B Ishak Gabra, Ying Yang, Jason W Locasale, Mei Kong
Glutamine is an essential nutrient for cancer cell survival and proliferation. Enhanced utilization of glutamine often depletes its local supply, yet how cancer cells adapt to low glutamine conditions is largely unknown. Here, we report that IκB kinase β (IKKβ) is activated upon glutamine deprivation and is required for cell survival independently of NF-κB transcription. We demonstrate that IKKβ directly interacts with and phosphorylates 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase isoform 3 (PFKFB3), a major driver of aerobic glycolysis, at Ser269 upon glutamine deprivation to inhibit its activity, thereby down-regulating aerobic glycolysis when glutamine levels are low...
August 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/27566823/pfkfb3-driven-macrophage-glycolytic-metabolism-is-a-crucial-component-of-innate-antiviral-defense
#10
Hui Jiang, Hengfei Shi, Man Sun, Yafeng Wang, Qingzhou Meng, Panpan Guo, Yanlan Cao, Jiong Chen, Xiang Gao, Erguang Li, Jianghuai Liu
Signaling by viral nucleic acids and subsequently by type I IFN is central to antiviral innate immunity. These signaling events are also likely to engage metabolic changes in immune and nonimmune cells to support antiviral defense. In this study, we show that cytosolic viral recognition, by way of secondary IFN signaling, leads to upregulation of glycolysis preferentially in macrophages. This metabolic switch involves induction of glycolytic activator 6-phosphofructose-2-kinase and fructose-2,6-bisphosphatase (PFKFB3)...
October 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27535281/the-epigenetic-signature-of-systemic-insulin-resistance-in-obese-women
#11
Peter Arner, Anna-Stina Sahlqvist, Indranil Sinha, Huan Xu, Xiang Yao, Dawn Waterworth, Deepak Rajpal, A Katrina Loomis, Johannes M Freudenberg, Toby Johnson, Anders Thorell, Erik Näslund, Mikael Ryden, Ingrid Dahlman
AIMS/HYPOTHESIS: Insulin resistance (IR) links obesity to type 2 diabetes. The aim of this study was to explore whether white adipose tissue (WAT) epigenetic dysregulation is associated with systemic IR by genome-wide CG dinucleotide (CpG) methylation and gene expression profiling in WAT from insulin-resistant and insulin-sensitive women. A secondary aim was to determine whether the DNA methylation signature in peripheral blood mononuclear cells (PBMCs) reflects WAT methylation and, if so, can be used as a marker for systemic IR...
November 2016: Diabetologia
https://www.readbyqxmd.com/read/27491149/-expression-of-pfkfb-hk2-nampt-tspan13-and-hspb8-genes-in-pediatric-glioma
#12
D O Minchenko, Y E Novik, H S Maslak, O V Tiazhka, O H Minchenko
We studied the peculiarity of the expression of several key genes related to dysregulation of cell proliferation and surviving processes in pediatric glioma (glioblastoma multiforme) tissue from five children with age from 5 to 8 years as well a sin corresponding nonmalignant tissue counterparts as control from the same patients. RNA was isolated from glioma tissue and corresponding non-malignant tissue counterparts and PFKFB1, PFKFB2, PFKFB3, PFKFB4, HK2, NAMPT, TSPAN13, and HSPB8 gene expressions were studied by quantitative polymerase chain reaction...
October 2015: Likars'ka Sprava
https://www.readbyqxmd.com/read/27436424/glycolytic-regulation-of-cell-rearrangement-in-angiogenesis
#13
Bert Cruys, Brian W Wong, Anna Kuchnio, Dries Verdegem, Anna Rita Cantelmo, Lena-Christin Conradi, Saar Vandekeere, Ann Bouché, Ivo Cornelissen, Stefan Vinckier, Roeland M H Merks, Elisabetta Dejana, Holger Gerhardt, Mieke Dewerchin, Katie Bentley, Peter Carmeliet
During vessel sprouting, endothelial cells (ECs) dynamically rearrange positions in the sprout to compete for the tip position. We recently identified a key role for the glycolytic activator PFKFB3 in vessel sprouting by regulating cytoskeleton remodelling, migration and tip cell competitiveness. It is, however, unknown how glycolysis regulates EC rearrangement during vessel sprouting. Here we report that computational simulations, validated by experimentation, predict that glycolytic production of ATP drives EC rearrangement by promoting filopodia formation and reducing intercellular adhesion...
2016: Nature Communications
https://www.readbyqxmd.com/read/27387960/glucose-and-palmitate-differentially-regulate-pfkfb3-ipfk2-and-inflammatory-responses-in-mouse-intestinal-epithelial-cells
#14
Rachel Botchlett, Honggui Li, Xin Guo, Ting Qi, JiaJia Zhao, Juan Zheng, Shih-Lung Woo, Ya Pei, Mengyang Liu, Xiang Hu, Guang Chen, Ting Guo, Sijun Yang, Qifu Li, Xiaoqiu Xiao, Yuqing Huo, Chaodong Wu
The gene PFKFB3 encodes for inducible 6-phosphofructo-2-kinase, a glycolysis-regulatory enzyme that protects against diet-induced intestine inflammation. However, it is unclear how nutrient overload regulates PFKFB3 expression and inflammatory responses in intestinal epithelial cells (IECs). In the present study, primary IECs were isolated from small intestine of C57BL/6J mice fed a low-fat diet (LFD) or high-fat diet (HFD) for 12 weeks. Additionally, CMT-93 cells, a cell line for IECs, were cultured in low glucose (LG, 5...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27373212/targeting-of-mct1-and-pfkfb3-influences-cell-proliferation-and-apoptosis-in-bladder-cancer-by-altering-the-tumor-microenvironment
#15
Ke Yao Hu, De Gui Wang, Peng Fei Liu, Yan Wei Cao, Yong Hua Wang, Xue Cheng Yang, Cheng Xia Hu, Li Jiang Sun, Hai Tao Niu
Phosphofructokinase-2/fructose-2,6-bisphosphatase 3 (PFKFB3) and monocarboxylate transporter 1 (MCT1) play important roles in tumor endothelial cells (ECs) and several biological processes. The present study was conducted to study the effects of PFKFB3 and MCT1 on cell proliferation and apoptosis in the tumor microenvironment by co-culture of HUVECs and T24, a bladder cancer (BC) cell line, using a microfluidic device. Immunofluorescence assay showed that HUVEC activity was significantly enhanced under co-culture with T24 cells, according to the stronger fluorescence intensity of CD31 and CD105 than that in the signal‑cultured cells...
August 2016: Oncology Reports
https://www.readbyqxmd.com/read/27262815/pfkfb3-potentially-contributes-to-paclitaxel-resistance-in-breast-cancer-cells-through-tlr4-activation-by-stimulating-lactate-production
#16
X Ge, Z Cao, Y Gu, F Wang, J Li, M Han, W Xia, Z Yu, P Lyu
Paclitaxel is a commonly used agent for breast cancer therapy, which comes across the obstacle "drug resistance", resulting in shortened overall survival of patients. Warburg effect has become one character of cancer cell and was reported to induce paclitaxel resistance, the mechanism of which is poorly understood. In this study, we sought to examine the role of 6-Phosphofructo-2-kinase (PFKFB3), a critical regulator of glycolysis, in paclitaxel resistance development. Two clones of paclitaxel resistant breast cancer cells, MCF-7RA and MCF-7RB, were established by a long term exposure of MCF-7 cells to paclitaxel...
2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27171439/systematic-analysis-of-gene-expression-alterations-and-clinical-outcomes-for-long-chain-acyl-coenzyme-a-synthetase-family-in-cancer
#17
Wei-Ching Chen, Chih-Yang Wang, Yu-Hsuan Hung, Tzu-Yang Weng, Meng-Chi Yen, Ming-Derg Lai
Dysregulated lipid metabolism contributes to cancer progression. Our previous study indicates that long-chain fatty acyl-Co A synthetase (ACSL) 3 is essential for lipid upregulation induced by endoplasmic reticulum stress. In this report, we aimed to identify the role of ACSL family in cancer with systematic analysis and in vitro experiment. We explored the ACSL expression using Oncomine database to determine the gene alteration during carcinogenesis and identified the association between ACSL expression and the survival of cancer patient using PrognoScan database...
2016: PloS One
https://www.readbyqxmd.com/read/27151219/type-2-diabetes-dysregulates-glucose-metabolism-in-cardiac-progenitor-cells
#18
Joshua K Salabei, Pawel K Lorkiewicz, Parul Mehra, Andrew A Gibb, Petra Haberzettl, Kyung U Hong, Xiaoli Wei, Xiang Zhang, Qianhong Li, Marcin Wysoczynski, Roberto Bolli, Aruni Bhatnagar, Bradford G Hill
Type 2 diabetes is associated with increased mortality and progression to heart failure. Recent studies suggest that diabetes also impairs reparative responses after cell therapy. In this study, we examined potential mechanisms by which diabetes affects cardiac progenitor cells (CPCs). CPCs isolated from the diabetic heart showed diminished proliferation, a propensity for cell death, and a pro-adipogenic phenotype. The diabetic CPCs were insulin-resistant, and they showed higher energetic reliance on glycolysis, which was associated with up-regulation of the pro-glycolytic enzyme 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3)...
June 24, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27145922/meclizine-induced-enhanced-glycolysis-is-neuroprotective-in-parkinson-disease-cell-models
#19
Chien Tai Hong, Kai-Yin Chau, Anthony H V Schapira
Meclizine is a well-tolerated drug routinely used as an anti-histamine agent in the management of disequilibrium. Recently, meclizine has been assessed for its neuroprotective properties in ischemic stroke and Huntington disease models. We found that meclizine protected against 6-hydroxydopamine-induced apoptosis and cell death in both SH-SY5Y cells and rat primary cortical cultures. Meclizine increases the level of 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3), which activates phosphofructokinase, a rate-determining enzyme of glycolysis...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27128560/ablation-of-sirt3-causes-coronary-microvascular-dysfunction-and-impairs-cardiac-recovery-post-myocardial-ischemia
#20
Xiaochen He, Heng Zeng, Jian-Xiong Chen
RATIONALE: Sirtuin (SIRT3), a major nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylase in mitochondria, declines with aging and its ablation is associated with accelerated development of cardiovascular diseases. However, the role of SIRT3 in coronary microvascular function and post-MI recovery has not been completely understood. OBJECTIVE: The goal was to investigate whether ablation of SIRT3 causes coronary microvascular dysfunction, exacerbates post-myocardial ischemia (MI) cardiac dysfunction and impairs cardiac recovery...
July 15, 2016: International Journal of Cardiology
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