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Warburg effect

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https://www.readbyqxmd.com/read/28098871/lectin-pcl-inhibits-the-warburg-effect-of-pc3-cells-by-combining-with-egfr-and-inhibiting-hk2
#1
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/28094552/glucose-metabolism-in-cancer-and-ischemia-possible-therapeutic-consequences-of-the-warburg-effect
#2
Spela Salamon, Eva Podbregar, Peter Kubatka, Dietrich Büsselberg, Martin Caprnda, Radka Opatrilova, Vanda Valentova, Mariusz Adamek, Peter Kruzliak, Matej Podbregar
The Warburg effect states that the main source of energy for cancer cells is not aerobic respiration, but glycolysis-even in normoxia. The shift from one to the other is governed by mutually counteracting enzymes: pyruvate dehydrogenase and pyruvate dehydrogenase kinase (PDK). Anaerobic metabolism of cancer cells promotes cell proliferation, local tissue immunosuppression, resistance to hypoxic conditions, and metastatic processes. By switching glucose back to oxidative metabolism, these effects might be reversed...
January 17, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28093985/ketogenic-diet-and-other-dietary-intervention-strategies-in-the-treatment-of-cancer
#3
Matteo Vergati, Eriseld Krasniqi, Girolamo Del Monte, Silvia Riondino, Doriana Vallone, Fiorella Guadagni, Patrizia Ferroni, Mario Roselli
Pre-clinical and clinical studies have investigated the role of a dysregulated metabolism in the sustainability of tumor initiation and progression. One of the most familiar metabolic alterations encountered in several types of cancers is the upregulation of glycolysis, which is also maintained in conditions of normal oxygen tension (aerobic glycolysis, Warburg effect) while oxidative phosphorylation is apparently reduced. As a result, cancer cells convert most incoming glucose to lactate. Although more rapid, adenosine triphosphate (ATP) production by glycolysis is less efficient in terms of ATP generated per unit of glucose consumed than oxidative phosphorylation...
January 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28093201/molecular-targets-of-the-warburg-effect-and-inflammatory-cytokines-in-the-pathogenesis-of-pulmonary-artery-hypertension
#4
REVIEW
Na Liu, Stephanie Parry, Yunbin Xiao, Shenghua Zhou, Qiming Liu
Pulmonary arterial hypertension (PAH) is a progressive vascular disease characterized by increased pulmonary arterial pressure and vasoconstriction and structural remolding of pulmonary arterioles. Recent clinical and experimental studies have discovered the relationship between metabolic alterations and the pathogenesis of PAH. The primary metabolic alteration, previously demonstrated in various cancers, is a gradual change in energy generated from complete aerobic cellular respiration to from solely "aerobic glycolysis," termed the "Warburg effect...
January 13, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28077309/physical-and-biological-characteristics-of-multi-drug-resistance-mdr-an-integral-approach-considering-ph-and-drug-resistance-in-cancer
#5
REVIEW
Ziad Omran, Paula Scaife, Simon Stewart, Cyril Rauch
The role of the Warburg effect in cancer remains to be elucidated with a resurgence in research efforts over the past decade. Why a cancer cell would prefer to use energy inefficient glycolysis, leading to an alteration of pH both inside and outside of the cell, remains to be uncovered. The development of MDR represents a major challenge in the treatment of cancer and it is explained, so far, by the over expression of drug transporters such as the well-known and archetypal P-glycoprotein (Pgp). However, controversies exist regarding the function of Pgp in multi-drug resistance...
January 8, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28076853/pyruvate-dehydrogenase-expression-is-negatively-associated-with-cell-stemness-and-worse-clinical-outcome-in-prostate-cancers
#6
Yali Zhong, Xiaoli Li, Yasai Ji, Xiaoran Li, Yaqing Li, Dandan Yu, Yuan Yuan, Jian Liu, Huixiang Li, Mingzhi Zhang, Zhenyu Ji, Dandan Fan, Jianguo Wen, Mariusz Adam Goscinski, Long Yuan, Bin Hao, Jahn M Nesland, Zhenhe Suo
Cells generate adenosine-5'-triphosphate (ATP), the major currency for energy-consuming reactions, through mitochondrial oxidative phosphorylation (OXPHOS) and glycolysis. One of the remarkable features of cancer cells is aerobic glycolysis, also known as the "Warburg Effect", in which cancer cells rely preferentially on glycolysis instead of mitochondrial OXPHOS as the main energy source even in the presence of high oxygen tension. One of the main players in controlling OXPHOS is the mitochondrial gatekeeperpyruvate dehydrogenase complex (PDHc) and its major subunit is E1α (PDHA1)...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076790/the-anti-warburg-effect-elicited-by-the-camp-pgc1%C3%AE-pathway-drives-differentiation-of-glioblastoma-cells-into-astrocytes
#7
Fan Xing, Yizhao Luan, Jing Cai, Sihan Wu, Jialuo Mai, Jiayu Gu, Haipeng Zhang, Kai Li, Yuan Lin, Xiao Xiao, Jiankai Liang, Yuan Li, Wenli Chen, Yaqian Tan, Longxiang Sheng, Bingzheng Lu, Wanjun Lu, Mingshi Gao, Pengxin Qiu, Xingwen Su, Wei Yin, Jun Hu, Zhongping Chen, Ke Sai, Jing Wang, Furong Chen, Yinsheng Chen, Shida Zhu, Dongbing Liu, Shiyuan Cheng, Zhi Xie, Wenbo Zhu, Guangmei Yan
Glioblastoma multiforme (GBM) is among the most aggressive of human cancers. Although differentiation therapy has been proposed as a potential approach to treat GBM, the mechanisms of induced differentiation remain poorly defined. Here, we established an induced differentiation model of GBM using cAMP activators that specifically directed GBM differentiation into astroglia. Transcriptomic and proteomic analyses revealed that oxidative phosphorylation and mitochondrial biogenesis are involved in induced differentiation of GBM...
January 10, 2017: Cell Reports
https://www.readbyqxmd.com/read/28069585/expression-of-hmgb2-indicates-worse-survival-of-patients-and-is-required-for-the-maintenance-of-warburg-effect-in-pancreatic-cancer
#8
Xin Cai, Hongjian Ding, Yanxia Liu, Gaofeng Pan, Qingguo Li, Zhen Yang, Weiyan Liu
High mobility group proteins (HMGs) are the second most abundant chromatin proteins and exert global genomic functions in the establishment of active or inactive chromatin domains. Through interaction with nucleosomes, transcription factors, nucleosome-remodeling machines and histones, the HMGs family proteins contribute to the fine tuning of transcription in response to rapid environmental changes. Mammalian high mobility group Bs (HMGBs) are characterized by two tandem HMG box domains followed by a long acidic tail...
January 9, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28068289/cancer-metabolism-the-volatile-signature-of-glycolysis-in-vitro-model-in-lung-cancer-cells
#9
Tali Feinberg, Jens Herbig, Ingrid Kohl, Guy Las, John C Cancilla, Jose S Torrecilla, Maya Ilouze, Hossam Haick, Nir Peled
Discovering the volatile signature of cancer cells is an emerging approach in cancer research, as it may contribute to a fast and simple diagnosis of tumors in vivo and in vitro. One of the main contributors to such a volatile signature is hyperglycolysis, which characterizes the cancerous cell. The metabolic perturbation in cancer cells is known as the Warburg effect; glycolysis is preferred over oxidative phosphorylation (OXPHOS), even in the presence of oxygen. The precise mitochondrial alterations that underlie the increased dependence of cancer cells on aerobic glycolysis for energy generation have remained a mystery...
January 9, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28051182/nesting-of-colon-and-ovarian-cancer-cells-in-the-endothelial-niche-is-associated-with-alterations-in-glycan-and-lipid-metabolism
#10
Anna Halama, Bella S Guerrouahen, Jennifer Pasquier, Noothan J Satheesh, Karsten Suhre, Arash Rafii
The metabolic phenotype of a cancer cell is determined by its genetic makeup and microenvironment, which dynamically modulates the tumor landscape. The endothelial cells provide both a promoting and protective microenvironment - a niche for cancer cells. Although metabolic alterations associated with cancer and its progression have been fairly defined, there is a significant gap in our understanding of cancer metabolism in context of its microenvironment. We deployed an in vitro co-culture system based on direct contact of cancer cells with endothelial cells (E4(+)EC), mimicking the tumor microenvironment...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28049773/crosstalk-between-alternatively-spliced-ugt1a-isoforms-and-colon-cancer-cell-metabolism
#11
Yannick Audet-Delage, Michele Rouleau, Melanie Rouleau, Joannie Roberge, Stephanie Miard, Frederic Picard, Bernard Tetu, Chantal Guillemette
Alternative splicing at the human glucuronosyltransferase 1 gene locus (UGT1) produces alternate isoforms UGT1A_i2s that control glucuronidation activity through protein-protein interactions. Here, we hypothesized that UGT1A_i2s function into a complex protein network connecting other metabolic pathways with influence on cancer cell metabolism. This is based on a pathway enrichment analysis of proteomic data that identified several high-confidence candidate interaction proteins of UGT1A_i2 proteins in human tissues, namely the rate-limiting enzyme of glycolysis pyruvate kinase (PKM), which plays a critical role in cancer cell metabolism and tumor growth...
January 3, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28048289/su-f-t-678-clotrimazole-sensitizes-mcf-7-breast-cancer-cell-line-to-radiation
#12
L Garcia, M Tambasco
PURPOSE: To study the effects of Clotrimazole (CLT) on radiosensitivity of MCF-7 Cells in correlation to detachment of Hexokinase II from the Voltage Dependent Anion Channel on the outer membrane of the mitochondria. Apoptotic fractions were also analyzed in relation to the detachment of Hexokinase. METHODS: This study focused on the mammary adenocarcinoma cell line, MCF-7. Colony forming assays were used to analyze radiosensitization by CLT. Flow cytometry methods were used to analyze apoptotic vs necrotic fractions after treatment with CLT...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28030896/cancer-metabolism-fueling-more-than-just-growth
#13
REVIEW
Namgyu Lee, Dohoon Kim
The early landmark discoveries in cancer metabolism research have uncovered metabolic processes that support rapid proliferation, such as aerobic glycolysis (Warburg effect), glutaminolysis, and increased nucleotide biosynthesis. However, there are limitations to the effectiveness of specifically targeting the metabolic processes which support rapid proliferation. First, as other normal proliferative tissues also share similar metabolic features, they may also be affected by such treatments. Secondly, targeting proliferative metabolism may only target the highly proliferating "bulk tumor" cells and not the slower-growing, clinically relevant cancer stem cell subpopulations which may be required for an effective cure...
December 2016: Molecules and Cells
https://www.readbyqxmd.com/read/28025745/microrna-98-suppress-warburg-effect-by-targeting-hk2-in-colon-cancer-cells
#14
Weimin Zhu, Yijiao Huang, Qi Pan, Pei Xiang, Nanlan Xie, Hao Yu
BACKGROUND: Warburg effect is a hallmark of cancer cells. Accumulating evidence suggests that microRNAs (miRs) could regulate such metabolic reprograming. Aberrant expression of miR-98 has been observed in many types of cancers. However, its functions and significance in colon cancer remain largely elusive. AIMS: To investigate miR-98 expression and the biological functions in colon cancer progression. METHODS: miR-98 expression levels were determined by quantitative RT-PCR in 215 cases of colon cancer samples...
December 26, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28025580/pkm2-and-other-key-regulators-of-warburg-effect-positively-correlate-with-cd147-emmprin-gene-expression-and-predict-survival-in-multiple-myeloma
#15
S Panchabhai, I Schlam, S Sebastian, R Fonseca
Leukemia accepted article preview online, 27 December 2016. doi:10.1038/leu.2016.389.
December 27, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28025100/arf6-induced-by-mutant-kras-promotes-proliferation-and-warburg-effect-in-pancreatic-cancer
#16
Chen Liang, Yi Qin, Bo Zhang, Shunrong Ji, Si Shi, Wenyan Xu, Jiang Liu, Jinfeng Xiang, Dingkong Liang, Qiangsheng Hu, Quanxing Ni, Xianjun Yu, Jin Xu
Though significant progress has been made in the availability of diagnostic techniques and treatment strategies, pancreatic cancer remains a disease of high mortality rates. Therefore, there is an urgent need for a better understanding of the molecular mechanisms that governs the oncogenesis and metastasis process of pancreatic cancer. In our study, by using the Cancer Genome Atlas (TCGA) dataset analysis, we demonstrated that the small guanosine triphosphatase (GTPase) ADP-ribosylation factor 6 (ARF6) serves as a biomarker for predicting prognosis of pancreatic cancer...
December 23, 2016: Cancer Letters
https://www.readbyqxmd.com/read/28018856/time-and-circumstances-cancer-cell-metabolism-at-various-stages-of-disease-progression
#17
REVIEW
Georg F Weber
Over the past decade, research into the unique ways, in which cancer cells skew their metabolism, has had a renaissance-for the repeated time over more than 80 years since the discovery of an inherent preference for glycolysis. Importantly, the Warburg effect that arises in primary neoplasms is not the sole prominent metabolic phenomenon. Once the transformed cells are shed from their initial growth and begin the process of metastasis, their energy requirements change and they adapt to the increased demand for adenosine triphosphate, which if not satisfied would lead to anoikis...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/28012418/characterization-of-a-near-infrared-fluorescent-dcpo-tagged-glucose-analogue-for-cancer-cell-imaging
#18
Yanfen Fang, Wanli Zhang, Mengli Zhu, Shiguang Chen, Xuan Liu, Wei Lu, Xiongwen Zhang
Cancer cells are usually characterized with an increase in glucose uptake when compared with normal cells, which is known as Warburg effect. Near-infrared (NIR) fluorescent glucose analogues have been previously synthesized and been applied in cancer cell imaging. However, most NIR dyes usually have one or more charge in their structures, which may cause low cell membrane permeability and hamper their application in cell imaging. Here we reported a novel glucose analogue N2, which was designed and synthesized based on a new type of NIR dye, DCPO...
January 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28012130/accumulation-of-the-advanced-glycation-end-product-carboxymethyl-lysine-in-breast-cancer-is-positively-associated-with-estrogen-receptor-expression-and-unfavorable-prognosis-in-estrogen-receptor-negative-cases
#19
Norbert Nass, Atanas Ignatov, Ludwig Andreas, Christine Weißenborn, Thomas Kalinski, Saadettin Sel
Advanced glycation end products (AGEs) accumulate as a result of high concentrations of reactive aldehydes, oxidative stress, and insufficient degradation of glycated proteins. AGEs are therefore accepted biomarkers for aging, diabetes, and several degenerative diseases. Due to the Warburg effect and increased oxidative stress, cancer cells frequently accumulate significant amounts of AGEs. As the accumulation of AGEs may reflect the metabolic state and receptor signaling, we evaluated the potential prognostic and predictive value of this biomarker...
December 23, 2016: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/27999356/modulation-of-glo1-expression-affects-malignant-properties-of-cells
#20
Antje Hutschenreuther, Marina Bigl, Nasr Y A Hemdan, Tewodros Debebe, Frank Gaunitz, Gerd Birkenmeier
The energy metabolism of most tumor cells relies on aerobic glycolysis (Warburg effect) characterized by an increased glycolytic flux that is accompanied by the increased formation of the cytotoxic metabolite methylglyoxal (MGO). Consequently, the rate of detoxification of this reactive glycolytic byproduct needs to be increased in order to prevent deleterious effects to the cells. This is brought about by an increased expression of glyoxalase 1 (GLO1) that is the rate-limiting enzyme of the MGO-detoxifying glyoxalase system...
December 18, 2016: International Journal of Molecular Sciences
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