keyword
MENU ▼
Read by QxMD icon Read
search

Hexokinase 2

keyword
https://www.readbyqxmd.com/read/29142019/molecular-imaging-of-glut1-and-glut5-in-breast-cancer-a-multitracer-pet-imaging-study-in-mice
#1
Melinda Wuest, Ingrit Hamann, Vincent Bouvet, Darryl Glubrecht, Alison Marshall, Brendan Trayner, Olivier Soueidan, Daniel Krys, Michael Wagner, Chris Cheeseman, Frederick West, Frank Wuest
Use of [18F]FDG-PET in clinical breast cancer (BC) imaging is limited mainly due to insufficient expression levels of GLUT1 in up to 50% of all patients. Fructose-specific facilitative hexose transporter GLUT5 represents an alternative biomarker for PET imaging of hexose metabolism in BC. The goal of the present study was to compare uptake characteristics of selected hexose-based PET radiotracers in murine BC model EMT6. Uptake of 1-deoxy-1-[18F]fluoro-D-fructose (1-[18F]FDF), 6-deoxy-6-[18F]fluoro-D-fructose (6-[18F]FDF), 1-deoxy-1-[18F]fluoro-2,5-anhydro-mannitol (1-[18F]FDAM), 2-deoxy-2-[18F]fluoro-D-glucose (2-[18F]FDG) and 6-deoxy-6-[18F]fluoro-D-glucose (6-[18F]FDG) was studied in EMT6 cells, tumors and muscle and correlated to GLUT1 and GLUT5 expression levels...
November 15, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/29138850/role-of-mitochondrial-function-in-the-invasiveness-of-human-colon-cancer-cells
#2
Chen-Sung Lin, Li-Tzu Liu, Liang-Hung Ou, Siao-Cian Pan, Chia-I Lin, Yau-Huei Wei
We investigated the role of mitochondrial function in the invasiveness of human colorectal cancer (CRC) cell lines, using paired primary SW480 and metastatic SW620 cells, and appraised the clinical relevance of the alteration of mtDNA copy number in 33 pairs of CRC specimens after surgical resection. Suppression of mitochondrial function was achieved by the exposure of cells to oligomycin A (OA) or by knockdown of mitochondrial transcriptional factor A (TFAM) to evaluate their effects on energy metabolism, reactive oxygen species, protein expression levels of epithelial-mesenchymal transition (EMT) markers and invasive activity of CRC cells...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29137276/potential-clinical-value-of-pet-ct-in-predicting-occult-nodal-metastasis-in-t1-t2n0m0-lung-cancer-patients-staged-by-pet-ct
#3
Xiang Zhou, Ruohua Chen, Gang Huang, Jianjun Liu
We assessed the clinical value of 2-fluoro-2-deoxyglucose ((18)F-FDG) PET/CT imaging for predicting occult nodal metastasis in non-small cell lung cancer (NSCLC) patients. This retrospective study included 54 patients with T1-2N0M0 NSCLC who had undergone (18)F-FDG PET/CT before surgery. Occult nodal metastasis was detected in 25.9% (14/54) of the patients. Immunohistochemical analysis revealed that increased glucose transporter 1 expression was associated with occult nodal metastasis, but hexokinase 2 expression was not...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29119535/mitochondria-bound-hexokinase-mt-hk-activity-differ-in-cortical-and-hypothalamic-synaptosomes-differential-role-of-mt-hk-in-h2o2-depuration
#4
João Paulo Cavalcanti-de-Albuquerque, Eduardo de Souza Ferreira, Denise Pires de Carvalho, Antonio Galina
Glucose and oxygen are vital for the brain, as these molecules provide energy and metabolic intermediates that are necessary for cell function. The glycolysis pathway and mitochondria play a pivotal role in cell energy metabolism, which is closely related to reactive oxygen species (ROS) production. Hexokinase (HK) is a key enzyme involved in glucose metabolism that modulates the level of brain mitochondrial ROS by recycling ADP for oxidative phosphorylation (OxPhos). Here, we hypothesize that the control of mitochondrial metabolism by hexokinase differs in distinct areas of the brain, such as the cortex and hypothalamus, in which ROS might function as signaling molecules...
November 8, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/29118013/restricting-glycolysis-impairs-brown-adipocyte-glucose-and-oxygen-consumption
#5
Sally Winther, Marie S Isidor, Astrid L Basse, Nina Skjoldborg, Amanda Cheung, Bjørn Quistorff, Jacob B Hansen
During thermogenic activation, brown adipocytes take up large amounts of glucose. In addition, cold stimulation leads to an upregulation of glycolytic enzymes. Here we have investigated the importance of glycolysis for brown adipocyte glucose consumption and thermogenesis. Using siRNA-mediated knockdown in mature adipocytes, we explored the effect of glucose transporters and glycolytic enzymes on brown adipocyte functions such as consumption of glucose and oxygen. Basal oxygen consumption in brown adipocytes was equally dependent on glucose and fatty acid oxidation, whereas isoproterenol (ISO)-stimulated respiration was fueled mainly by fatty acids, with a significant contribution from glucose oxidation...
November 7, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29114069/bag3-directly-stabilizes-hexokinase-2-mrna-and-promotes-aerobic-glycolysis-in-pancreatic-cancer-cells
#6
Ming-Xin An, Si Li, Han-Bing Yao, Chao Li, Jia-Mei Wang, Jia Sun, Xin-Yu Li, Xiao-Na Meng, Hua-Qin Wang
Aerobic glycolysis, a phenomenon known historically as the Warburg effect, is one of the hallmarks of cancer cells. In this study, we characterized the role of BAG3 in aerobic glycolysis of pancreatic ductal adenocarcinoma (PDAC) and its molecular mechanisms. Our data show that aberrant expression of BAG3 significantly contributes to the reprogramming of glucose metabolism in PDAC cells. Mechanistically, BAG3 increased Hexokinase 2 (HK2) expression, the first key enzyme involved in glycolysis, at the posttranscriptional level...
November 7, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29113225/effect-of-sirna-mediated-gene-silencing-of-transketolase-on-a549-lung-cancer-cells
#7
Huan Lu, Huili Zhu
The aim of the present study was to investigate the effects of transketolase (TKT) on cell proliferation, cell migration and interaction with other metabolism-associated genes in A549 lung cancer cells. A549 cells were transfected with three TKT-specific small interfering (si)RNAs, screened for the optimal transfection concentration, and sequenced with flow cytometry and reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Cell viability was evaluated using Cell Counting Kit-8 (CCK-8), cell cycle was assessed by flow cytometric analysis...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29104582/vvvhp1-2-is-transcriptionally-activated-by-vvmyba1-and-promotes-anthocyanin-accumulation-of-grape-berry-skins-via-glucose-signal
#8
Tianyu Sun, Lili Xu, Hong Sun, Qianyu Yue, Heng Zhai, Yuxin Yao
In this work, four vacuolar H(+)-PPase (VHP) genes were identified in the grape genome. Among them, VvVHP1; 2 was strongly expressed in berry skin and its expression exhibited high correlations to anthocyanin content of berry skin during berry ripening and under ABA and UVB treatments. VvVHP1; 2 was transcriptionally activated directly by VvMYBA1, and VvVHP1; 2 overexpression promoted anthocyanin accumulation in berry skins and Arabidopsis leaves; therefore, VvVHP1; 2 mediated VvMYBA1-regulated berry pigmentation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29103285/the-effect-of-dietary-asparagine-supplementation-on-energy-metabolism-in-liver-of-weaning-pigs-when-challenged-with-lipopolysaccharide
#9
Ping Kang, Yulan Liu, Huiling Zhu, Jing Zhang, Haifeng Shi, Shuang Li, Dingan Pi, Weibo Leng, Xiuying Wang, Huanting Wu, Yongqing Hou
Objective: This experiment was conducted to investigate whether asparagine (Asn) could improve liver energy status in the weaning pigs when challenged with lipopolysaccharide. Methods: Forty-eight weaned pigs (Duroc × Large White × Landrace, 8.12±0.56 kg) were assigned to four treatments: 1) CTRL, piglets received a control diet and injected with sterile 0.9% NaCl solution; 2) LPSCC, piglets received the same control diet and injected with Escherichia coli LPS; 3) LPS + 0...
November 3, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29102137/evaluation-of-glucose-dose-on-intravenous-glucose-tolerance-test-traits-in-holstein-friesian-heifers
#10
L Antonio González-Grajales, Laura Pieper, Sebastian Mengel, Rudolf Staufenbiel
Glucose metabolism in dairy and beef cattle has received considerable attention because balanced blood glucose is essential for numerous processes, such as milk production and general health. The glucose tolerance test measures the ability of an organism to regulate blood glucose levels. Glucose half-life time (GHLT) has high heritability and could serve as a potential parameter to breed for metabolic resistance. However, studies focusing on identification of an adequate glucose dose have not yet been conducted in cattle...
October 25, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29097359/customization-of-bilio-pancreatic-limb-length-to-modulate-and-sustain-anti-diabetic-effect-of-gastric-bypass-surgery
#11
Atanu Pal, David B Rhoads, Ali Tavakkoli
BACKGROUND: Although Roux-en-Y Gastric Bypass (RYGB) remains the most effective treatment for obesity and Type 2 Diabetes (T2D), many patients fail to achieve remission, or relapse. Increasing intestinal limb lengths of RYGB may improve outcomes, but the mechanistic basis for this remains unclear. We hypothesize Bilio-Pancreatic (BP) limb length modulates the anti-diabetic effect of RYGB. METHODS: Rats underwent RYGB with a 20-cm (RYGB-20cm) or 40-cm (RYGB-40cm) BP limb, and were compared to control animals...
November 2, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29094484/degradation-of-ampk-%C3%AE-1-sensitizes-braf-inhibitor-resistant-melanoma-cells-to-arginine-deprivation
#12
Ying-Ying Li, Chunjing Wu, Sumedh S Shah, Shu-Mei Chen, Medhi Wangpaichitr, Macus T Kuo, Lynn G Feun, Xiaoqing Han, Miguel Suarez, Jeffrey Prince, Niramol Savaraj
Melanomas harboring BRAF mutation (V600E) are known to recur frequently following treatment with BRAF inhibitors (BRAFi) despite a high initial response rate. Our previous study has uncovered that BRAFi-resistant melanoma (BR) cells are vulnerable to arginine deprivation. It has been reported that naïve melanoma cells undergo autophagy and re-express argininosuccinate synthetase 1 (ASS1) to enable them to synthesize arginine for survival when encountering arginine deprivation. Abolishing these two factors in BR cells confers sensitivity to arginine deprivation...
November 2, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/29077951/in-ovo-feeding-of-l-arginine-alters-energy-metabolism-in-post-hatch-broilers
#13
L L Yu, T Gao, M M Zhao, P A Lv, L Zhang, J L Li, Y Jiang, F Gao, G H Zhou
This study aimed to investigate the effects of in ovo feeding (IOF) of L-arginine (Arg) on energy metabolism in post-hatch broilers. A total of 720 eggs was randomly assigned to 3 treatments: 1) non-injected control group, 2) 0.75% NaCl diluent-injected control group, and 3) 1.0% Arg solution-injected group. At 17.5 d of incubation, 0.6 mL of each solution was injected into the amniotic fluid of each egg of injected groups. After hatching, 80 male chicks were randomly assigned to each treatment group with 8 replicates per group...
October 25, 2017: Poultry Science
https://www.readbyqxmd.com/read/29043013/mir-125a-suppresses-viability-and-glycolysis-and-induces-apoptosis-by-targeting-hexokinase-2-in-laryngeal-squamous-cell-carcinoma
#14
Zhanwei Sun, Wenqi Zhang, Qian Li
BACKGROUND: miR-125a usually functions as a tumor suppressor in cancers. However, the role of miR-125a in laryngeal squamous cell carcinoma (LSCC) has not been determined. METHODS: qRT-PCR was applied to measure the expression of miR-125a and HK2 mRNA in LSCC tissues and cells. CCK-8 kit and flow cytometry analysis were performed to detect cell viability and apoptosis. Luciferase reporter assay and RNA immunoprecipitation (RIP) were conducted to confirm the relationship between miR-125a and HK2...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/29031208/phytoecdysteroids-from-ajuga-iva-act-as-potential-antidiabetic-agent-against-alloxan-induced-diabetic-male-albino-rats
#15
Jin-Jun Wang, Hao Jin, Shao-Ling Zheng, Peng Xia, Yong Cai, Xiao-Jie Ni
The present study investigated the protective effect of phytoecdysteroids extracted from the Ajuga iva plant on body weight changes, blood glucose, insulin total protein, blood urea nitrogen (BUN), creatinine, triglycerides (TG), cholesterol, lipid peroxidation, antioxidant enzymes, pancreatic histopathology and hexokinase-I expression in the alloxan-induced diabetic rats. Experimental diabetes was induced following 15day intraperitoneal administration of alloxan. The rats were divided into four groups. Group I served as a sham group, and group II served as the diabetic control...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29026202/loss-of-abhd5-promotes-the-aggressiveness-of-prostate-cancer-cells
#16
Guohua Chen, Guoli Zhou, Siddhesh Aras, Zhenhui He, Stephanie Lucas, Izabela Podgorski, Wael Skar, James G Granneman, Jian Wang
The accumulation of neutral lipids in intracellular lipid droplets has been associated with the formation and progression of many cancers, including prostate cancer (PCa). Alpha-beta Hydrolase Domain Containing 5 (ABHD5) is a key regulator of intracellular neutral lipids that has been recently identified as a tumor suppressor in colorectal cancer, yet its potential role in PCa has not been investigated. Through mining publicly accessible PCa gene expression datasets, we found that ABHD5 gene expression is markedly decreased in metastatic castration-resistant PCa (mCRPC) samples...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28980855/regulation-of-glycolytic-metabolism-by-autophagy-in-liver-cancer-involves-selective-autophagic-degradation-of-hk2-hexokinase-2
#17
Lin Jiao, Hai-Liang Zhang, Dan-Dan Li, Ke-Li Yang, Jun Tang, Xuan Li, Jiao Ji, Yan Yu, Rui-Yan Wu, Senthilkumar Ravichandran, Jian-Jun Liu, Gong-Kan Feng, Min-Shan Chen, Yi-Xin Zeng, Rong Deng, Xiao-Feng Zhu
Impaired macroautophagy/autophagy and high levels of glycolysis are prevalent in liver cancer. However, it remains unknown whether there is a regulatory relationship between autophagy and glycolytic metabolism. In this study, by utilizing cancer cells with basal or impaired autophagic flux, we demonstrated that glycolytic activity is negatively correlated with autophagy level. The autophagic degradation of HK2 (hexokinase 2), a crucial glycolytic enzyme catalyzing the conversion of glucose to glucose-6-phosphate, was found to be involved in the regulation of glycolysis by autophagy...
October 5, 2017: Autophagy
https://www.readbyqxmd.com/read/28978029/intrinsic-remote-conditioning-of-the-myocardium-as-a-comprehensive-cardiac-response-to-ischemia-and-reperfusion
#18
Noemi Pavo, Dominika Lukovic, Katrin Zlabinger, David Lorant, Georg Goliasch, Johannes Winkler, Dietmar Pils, Katharina Auer, Hendrik Jan Ankersmit, Zoltán Giricz, Márta Sárközy, András Jakab, Rita Garamvölgyi, Maximilian Y Emmert, Simon P Hoerstrup, Derek J Hausenloy, Péter Ferdinandy, Gerald Maurer, Mariann Gyöngyösi
We have previously shown that distal anterior wall ischemia/reperfusion induces gene expression changes in the proximal anterior myocardial area, involving genes responsible for cardiac remodeling. Here we investigated the molecular signals of the ischemia non-affected remote lateral and posterior regions and present gene expression profiles of the entire left ventricle by using our novel and straightforward method of 2D and 3D image reconstruction. Five or 24h after repetitive 10min ischemia/reperfusion without subsequent infarction, pig hearts were explanted and myocardial samples from 52 equally distributed locations of the left ventricle were collected...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28955302/temporal-changes-in-cortical-and-hippocampal-expression-of-genes-important-for-brain-glucose-metabolism-following-controlled-cortical-impact-injury-in-mice
#19
June Zhou, Mark P Burns, Linda Huynh, Sonia Villapol, Daniel D Taub, Juan M Saavedra, Marc R Blackman
Traumatic brain injury (TBI) causes transient increases and subsequent decreases in brain glucose utilization. The underlying molecular pathways are orchestrated processes and poorly understood. In the current study, we determined temporal changes in cortical and hippocampal expression of genes important for brain glucose/lactate metabolism and the effect of a known neuroprotective drug telmisartan on the expression of these genes after experimental TBI. Adult male C57BL/6J mice (n = 6/group) underwent sham or unilateral controlled cortical impact (CCI) injury...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28954307/in-vitro-effects-of-the-specific-mitochondrial-tspo-ligand-ro5-4864-in-cultured-human-osteoblasts
#20
Rosenberg Nahum, Rosenberg Orit, Weizman Abraham, Veenman Leo, Gavish Moshe
The 18 kDa mitochondrial translocator protein (TSPO) ligands (10 µM), e. g., protoporphyrin IX, PK 11195 and FGIN-1-27, have different effects on metabolism and protein expression in human osteoblasts. In this study, we investigated the archetypical TSPO specific ligand Ro5-4864 (10 µM) effect in primary osteoblasts in culture aiming to further understand the TSPO role in these mature metabolically active cells.We found that following exposure to Ro5-4864, cellular [(18)F]-FDG incorporation and ATP content were reduced by 48% (p<0...
September 27, 2017: Experimental and Clinical Endocrinology & Diabetes
keyword
keyword
118345
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"