keyword
MENU ▼
Read by QxMD icon Read
search

hk2

keyword
https://www.readbyqxmd.com/read/28213701/ursolic-acid-mediated-changes-in-glycolytic-pathway-promote-cytotoxic-autophagy-and-apoptosis-in-phenotypically-different-breast-cancer-cells
#1
Anna Lewinska, Jagoda Adamczyk-Grochala, Ewa Kwasniewicz, Anna Deregowska, Maciej Wnuk
Plant-derived pentacyclic triterpenotids with multiple biological activities are considered as promising candidates for cancer therapy and prevention. However, their mechanisms of action are not fully understood. In the present study, we have analyzed the effects of low dose treatment (5-20 µM) of ursolic acid (UA) and betulinic acid (BA) on breast cancer cells of different receptor status, namely MCF-7 (ER(+), PR(+/-), HER2(-)), MDA-MB-231 (ER(-), PR(-), HER2(-)) and SK-BR-3 (ER(-), PR(-), HER2(+)). UA-mediated response was more potent than BA-mediated response...
February 17, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28203527/superoxide-increases-angiotensin-ii-at1-receptor-function-in-human-kidney-2-cells
#2
Mohammad Saleem, Indira Pokkunuri, Mohammad Asghar
The redox-sensitive Sp family transcription factor has been linked to the regulation of angiotensin II type 1 receptor (AT1R). However, the exact mechanism of AT1R regulation in renal cells is poorly understood. We tested the specificity of reactive oxygen species (ROS), superoxide vs. hydrogen peroxide (H2O2), and the specific role of Sp3 transcription factor, if any, in the regulation of AT1R in human kidney cells (HK2 cells). Superoxide dismutase (SOD) inhibitor diethyldithiocarbamate (DETC), but not H2O2 treatment, increased fluorescence levels of superoxide probe dihydroethidium (DHE)...
December 2016: FEBS Open Bio
https://www.readbyqxmd.com/read/28199183/mrna-mirna-integrative-analysis-of-diabetes-induced-cardiomyopathy-in-rats
#3
Mariana B Lopes, Renata Cc Freitas, Mario H Hirata, Rosario Dc Hirata, Adriana A Rezende, Vivian N Silbiger, Raul H Bortolin, Andre D Luchessi
An integrative analysis of miRNA and mRNA expression profiles in left ventricle (LV) of diabetes-induced rats was performed to elucidate the role of miRNAs and their mRNAs target in diabetic cardiomyopathy (DCM). mRNA (GSE4745) and miRNA (GSE44179) datasets were downloaded from Gene Expression Omnibus 2R (GEO2R) and differentially expressed mRNAs and miRNAs were selected. Cardiotoxicity-related mRNAs (n=7) were analyzed by Ingenuity Pathway Analyses 6 (IPA) and regulatory miRNAs (n=639) were identified using TargetScan 7...
March 1, 2017: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28194038/itd-mutation-in-flt3-tyrosine-kinase-promotes-warburg-effect-and-renders-therapeutic-sensitivity-to-glycolytic-inhibition
#4
H-Q Ju, G Zhan, A Huang, Y Sun, S Wen, J Yang, W-H Lu, R-H Xu, J Li, Y Li, G Garcia-Manero, P Huang, Y Hu
Internal tandem duplication (ITD) mutation in Fms-like tyrosine kinase 3 gene (FLT3/ITD) represents an unfavorable genetic change in acute myeloid leukemia (AML) and is associated with poor prognosis. Metabolic alterations have been involved in tumor progression and attracted interest as a target for therapeutic intervention. However, few studies analyzed the adaptations of cellular metabolism in the context of FLT3/ITD mutation. Here, we report that FLT3/ITD causes a significant increase in aerobic glycolysis through AKT-mediated upregulation of mitochondrial hexokinase (HK2), and renders the leukemia cells highly dependent on glycolysis and sensitive to pharmacological inhibition of glycolytic activity...
February 14, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28191039/elevated-transcriptional-levels-of-aldolase-a-aldoa-associates-with-cell-cycle-related-genes-in-patients-with-nsclc-and-several-solid-tumors
#5
Fan Zhang, Jie-Diao Lin, Xiao-Yu Zuo, Yi-Xuan Zhuang, Chao-Qun Hong, Guo-Jun Zhang, Xiao-Jiang Cui, Yu-Kun Cui
BACKGROUND: Aldolase A (ALDOA) is one of the glycolytic enzymes primarily found in the developing embryo and adult muscle. Recently, a new role of ALDOA in several cancers has been proposed. However, the underlying mechanism remains obscure and inconsistent. In this study, we tried to investigate ALDOA-associated (AA) genes using available microarray datasets to help elucidating the role of ALDOA in cancer. RESULTS: In the dataset of patients with non-small-cell lung cancer (NSCLC, E-GEOD-19188), 3448 differentially expressed genes (DEGs) including ALDOA were identified, in which 710 AA genes were found to be positively associated with ALDOA...
2017: BioData Mining
https://www.readbyqxmd.com/read/28186160/3-bromopyruvate-ameliorate-autoimmune-arthritis-by-modulating-th17-treg-cell-differentiation-and-suppressing-dendritic-cell-activation
#6
Takaichi Okano, Jun Saegusa, Keisuke Nishimura, Soshi Takahashi, Sho Sendo, Yo Ueda, Akio Morinobu
Recent studies have shown that cellular metabolism plays an important role in regulating immune cell functions. In immune cell differentiation, both interleukin-17-producing T (Th17) cells and dendritic cells (DCs) exhibit increased glycolysis through the upregulation of glycolytic enzymes, such as hexokinase-2 (HK2). Blocking glycolysis with 2-deoxyglucose was recently shown to inhibit Th17 cell differentiation while promoting regulatory T (Treg) cell generation. However, 2-DG inhibits all isoforms of HK. Thus, it is unclear which isoform has a critical role in Th17 cell differentiation and in rheumatoid arthritis (RA) pathogenesis...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28184935/involvement-of-ezh2-in-aerobic-glycolysis-of-prostate-cancer-through-mir-181b-hk2-axis
#7
Tao Tao, Ming Chen, Ranran Jiang, Han Guan, Yeqing Huang, Huan Su, Qiang Hu, Xu Han, Jun Xiao
Recent studies suggest that several types of tumors preferentially metabolize glucose through aerobic glycolysis, a phenomenon known as the Warburg effect. However, it remains largely unexplored whether metabolic reprogramming is involved in prostate cancer (PCa) progression. In this study, we found that histone methyltransferase enhancer of zeste homolog 2 (EZH2) dysregulated in PCa development regulated cellular growth and aerobic glycolysis through miR-181b/hexokinase 2 (HK2) axis. Aberrant expression profiles of coding RNA and microRNA were examined by two large, independent clinical prostate cancer data sets...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/28179998/phlpp-regulates-hexokinase-2-dependent-glucose-metabolism-in-colon-cancer-cells
#8
Xiaopeng Xiong, Yang-An Wen, Mihail I Mitov, Mary C Oaks, Shigeki Miyamoto, Tianyan Gao
Increased glucose metabolism is considered as one of the most important metabolic alterations adapted by cancer cells in order to generate energy as well as high levels of glycolytic intermediates to support rapid proliferation. PH domain leucine-rich repeat protein phosphatase (PHLPP) belongs to a novel family of Ser/Thr protein phosphatases that function as tumor suppressors in various types of human cancer. Here we determined the role of PHLPP in regulating glucose metabolism in colon cancer cells. Knockdown of PHLPP increased the rate of glucose consumption and lactate production, whereas overexpression of PHLPP had the opposite effect...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28178341/enhanced-expression-of-two-discrete-isoforms-of-matrix-metalloproteinase-2-in-experimental-and-human-diabetic-nephropathy
#9
Sang Soo Kim, Nari Shin, Sun Sik Bae, Min Young Lee, Harin Rhee, Il Young Kim, Eun Young Seong, Dong Won Lee, Soo Bong Lee, Ihm Soo Kwak, David H Lovett, Sang Heon Song
BACKGROUND: We recently reported on the enhanced expression of two isoforms of matrix metalloproteinase-2 (MMP-2) in human renal transplantation delayed graft function. These consist of the conventional secreted, full length MMP-2 isoform (FL-MMP-2) and a novel intracellular N-Terminal Truncated isoform (NTT-MMP-2) generated by oxidative stress-mediated activation of an alternate promoter in the MMP-2 first intron. Here we evaluated the effect of hyperglycemia and diabetes mellitus on the in vitro and in vivo expression of the two MMP-2 isoforms...
2017: PloS One
https://www.readbyqxmd.com/read/28174335/microrna-143-suppresses-oral-squamous-cell-carcinoma-oscc-cell-growth-invasion-and-glucose-metabolism-through-targeting-hexokinase2
#10
Xianghui Sun, Lei Zhang
MicroRNAs are non-coding RNAs that have functions to regulate gene expression and play essential roles in a variety of biological processes of cancers. In this study, we report miR-143 acts as a tumor suppressor in human oral squamous cell carcinoma (OSCC). The expressions of miR-143 are downregulated in both oral squamous cell carcinoma cell lines and patient samples compared with normal adjacent tissues. We found overexpression of miR-143 in oral cancer cell lines suppresses cell migration, cellular glucose metabolism and proliferation...
February 7, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28151018/calcium-dobesilate-prevents-diabetic-kidney-disease-by-decreasing-bim-and-inhibiting-apoptosis-of-renal-proximal-tubular-epithelial-cells
#11
Tian Cai, Xiao-Yun Wu, Xiao-Qian Zhang, Hong-Xia Shang, Zhong-Wen Zhang, Jian-Jun Dong, Lin Liao
Apoptosis of renal proximal tubular epithelial cells (PTECs) plays a vital role in the pathogenesis and progression of diabetic kidney disease (DKD). Calcium dobesilate is a vascular protective compound used for treatment of diabetic retinopathy and chronic venous insufficiency. The aim of this study was to determine whether calcium dobesilate can protect PTECs from glucose-induced apoptosis and the potential mechanism of this effect. It is indicated that high glucose promoted abnormal apoptosis of HK2 cells, which was inhibited by treatment of calcium dobesilate, while Bim expression decreased in response to calcium dobesilate in high-glucose-treated HK2 cells...
February 2, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28127848/mir-30c-protects-diabetic-nephropathy-by-suppressing-epithelial-to-mesenchymal-transition-in-db-db-mice
#12
Yanru Zhao, Zhongwei Yin, Huaping Li, Jiahui Fan, Shenglan Yang, Chen Chen, Dao Wen Wang
Epithelial-to-mesenchymal transition (EMT) plays a significant role in tubulointerstitial fibrosis, which is a hallmark of diabetic nephropathy. Thus, identifying the mechanisms of EMT activation could be meaningful. In this study, loss of miR-30c accompanied with increased EMT was observed in renal tubules of db/db mice and cultured HK2 cells exposed to high glucose. To further explore the roles of miR-30c in EMT and tubulointerstitial fibrosis, recombinant adeno-associated viral vector was applied to manipulate the expression of miR-30c...
January 27, 2017: Aging Cell
https://www.readbyqxmd.com/read/28124127/acute-low-intensity-cycling-with-blood-flow-restriction-has-no-effect-on-metabolic-signaling-in-human-skeletal-muscle-compared-to-traditional-exercise
#13
William J Smiles, Miguel S Conceição, Guilherme D Telles, Mara P T Chacon-Mikahil, Cláudia R Cavaglieri, Felipe C Vechin, Cleiton A Libardi, John A Hawley, Donny M Camera
PURPOSE: Autophagy is an intracellular degradative system sensitive to hypoxia and exercise-induced perturbations to cellular bioenergetics. We determined the effects of low-intensity endurance-based exercise performed with blood-flow restriction (BFR) on cell signaling adaptive responses regulating autophagy and substrate metabolism in human skeletal muscle. METHODS: In a randomized cross-over design, nine young, healthy but physically inactive males completed three experimental trials separated by 1 week of recovery consisting of either a resistance exercise bout (REX: 4 × 10 leg press repetitions, 70% 1-RM), endurance exercise (END: 30 min cycling, 70% VO2peak), or low-intensity cycling with BFR (15 min, 40% VO2peak)...
January 25, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28123709/bio-maleimide-stained-plasma-microparticles-can-be-purified-in-a-native-state-and-target-human-proximal-tubular-hk2-cells
#14
Mohammad J Alkhatatbeh, Lisa F Lincz, Rick F Thorne
Plasma microparticles (MPs) are heterogeneously sized submicron extracellular vesicles that originate from the cell membrane as a result of cell activation or apoptosis. Circulating MPs express cell-specific molecules that reflect their cell of origin and they are increasingly investigated for their potential role in intercellular communication. The aim of the current study was to determine if size exclusion chromatography could be used to purify fluorescent-labeled MPs in sufficient concentrations to be used experimentally in cell binding assays...
January 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28106131/hif-1%C3%AE-induction-during-reperfusion-avoids-maladaptive-repair-after-renal-ischemia-reperfusion-involving-mir127-3p
#15
Elisa Conde, Sara Giménez-Moyano, Laura Martín-Gómez, Macarena Rodríguez, M Edurne Ramos, Elia Aguado-Fraile, Ignacio Blanco-Sanchez, Ana Saiz, María Laura García-Bermejo
Ischemia/reperfusion (I/R) leads to Acute Kidney Injury. HIF-1α is a key factor during organ response to I/R. We previously demonstrated that HIF-1α is induced during renal reperfusion, after ischemia. Here we investigate the role of HIF-1α and the HIF-1α dependent mechanisms in renal repair after ischemia. By interference of HIF-1α in a rat model of renal I/R, we observed loss of expression and mis-localization of e-cadherin and induction of α-SMA, MMP-13, TGFβ, and collagen I. Moreover, we demonstrate that HIF-1α inhibition promotes renal cell infiltrates by inducing IL-1β, TNF-α, MCP-1 and VCAM-1, through NFkB activity...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105937/effect-of-lentivirus-mediated-shrna-inactivation-of-hk1-hk2-and-hk3-genes-in-colorectal-cancer-and-melanoma-cells
#16
Anna V Kudryavtseva, Maria S Fedorova, Alex Zhavoronkov, Alexey A Moskalev, Alexander S Zasedatelev, Alexey A Dmitriev, Asiya F Sadritdinova, Irina Y Karpova, Kirill M Nyushko, Dmitry V Kalinin, Nadezhda N Volchenko, Nataliya V Melnikova, Kseniya M Klimina, Dmitry V Sidorov, Anatoly Y Popov, Tatiana V Nasedkina, Andrey D Kaprin, Boris Y Alekseev, George S Krasnov, Anastasiya V Snezhkina
BACKGROUND: The switch from oxidative phosphorylation to glycolysis in proliferating cancer cells, even under aerobic conditions, has been shown first in 1926 by Otto Warburg. Today this phenomenon is known as the "Warburg effect" and recognized as a hallmark of cancer. The metabolic shift to glycolysis is associated with the alterations in signaling pathways involved in energy metabolism, including glucose uptake and fermentation, and regulation of mitochondrial functions. Hexokinases (HKs), which catalyze the first step of glycolysis, have been identified to play a role in tumorigenesis of human colorectal cancer (CRC) and melanoma...
December 22, 2016: BMC Genetics
https://www.readbyqxmd.com/read/28098871/lectin-pcl-inhibits-the-warburg-effect-of-pc3-cells-by-combining-with-egfr-and-inhibiting-hk2
#17
Hong Zhang, Xia Du, Ting-Ting Sun, Chun-Liu Wang, Ye Li, Shou-Zhen Wu
Prostatic carcinoma is the most aggressive tumor in adult men. Warburg effect is an important characteristic of tumor cell metabolism including prostate cancer cells, in which hexokinase 2 (HK2), a major rate-limiting enzyme involved in Warburg effect, is selectively upregulated. The lectin PCL is a mannose binding lectin which induces tumor cell apoptosis and autophagy. In the present study, we report that PCL could lower glucose consumption and lactate production, shift the Warburg effect by inhibiting the expression of HK2 in PC3 cells and the suppression of HK2 by siRNA reversed the effect of PCL on glucose consumption and lactate production...
January 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28088654/transcriptional-response-of-skeletal-muscle-to-a-low-protein-perinatal-diet-in-rat-offspring-at-different-ages-the-role-of-key-enzymes-of-glucose-fatty-acid-oxidation
#18
José Luiz de Brito Alves, Ana Elisa Toscano, João Henrique da Costa-Silva, Hubert Vidal, Carol Góis Leandro, Luciano Pirola
Skeletal muscle is a plastic tissue during development with distinctive acute and chronic response to maternal protein restriction. This study evaluated gene and protein expression of key-enzymes of glycolytic pathway (HK2, PFK, PDK4 and CS), and fatty acid oxidation (CPT1 and β-HAD) of two different types of skeletal muscle [soleus and extensor digitorium longus (EDL)] from offspring rats at 30 and 90 days of age, exposed to maternal isoenergetic low protein diet throughout gestation and lactation. Pups from dams fed 17% protein diet (n=5, normal protein, Np), and low protein pups from dams fed 8% casein diet (low protein, Lp, n=5) were evaluated...
December 15, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28086949/nek2-promotes-aerobic-glycolysis-in-multiple-myeloma-through-regulating-splicing-of-pyruvate-kinase
#19
Zhimin Gu, Jiliang Xia, Hongwei Xu, Ivana Frech, Guido Tricot, Fenghuang Zhan
BACKGROUND: Aerobic glycolysis, a hallmark of cancer, is characterized by increased metabolism of glucose and production of lactate in normaxia. Recently, pyruvate kinase M2 (PKM2) has been identified as a key player for regulating aerobic glycolysis and promoting tumor cell proliferation and survival. METHODS: Tandem affinity purification followed up by mass spectrometry (TAP-MS) and co-immunoprecipitation (Co-IP) were used to study the interaction between NIMA (never in mitosis gene A)-related kinase 2 (NEK2) and heterogeneous nuclear ribonucleoproteins (hnRNP) A1/2...
January 13, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28077391/acclimation-to-hypoxia-increases-carbohydrate-use-during-exercise-in-high-altitude-deer-mice
#20
Daphne S Lau, Alex D Connaty, Sajeni Mahalingam, Nastashya Wall, Zachary A Cheviron, Jay F Storz, Graham R Scott, Grant B McClelland
The low oxygen experienced at high altitude is a significant challenge to effective aerobic locomotion, as it requires sustained tissue oxygen delivery in addition to the appropriate allocation of metabolic substrates. Here we test whether high- and low-altitude deer mice (Peromyscus maniculatus) have evolved different acclimation responses to hypoxia with respect to muscle metabolism and fuel use during submaximal exercise. Using F1-generation high- and low-altitude deer mice that were born and raised in common conditions, we assessed 1) fuel use during exercise, 2) metabolic enzyme activities, and 3) gene expression for key transporters and enzymes in the gastrocnemius...
January 11, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
keyword
keyword
97751
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"