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Lu Y, Mu M, RenChen X, Wang W, Zhu Y, Zhong M, Jiang Y, Tao X. 2-Deoxy-D-glucose ameliorates inflammation and fibrosis in a silicosis mouse model by inhibiting hypoxia-inducible factor-1α in alveolar macrophages. Ecotoxicol Environ Saf 2024; 269:115767. [PMID: 38039851 DOI: 10.1016/j.ecoenv.2023.115767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 11/12/2023] [Accepted: 11/27/2023] [Indexed: 12/03/2023]
Abstract
Inhaling silica causes the occupational illness silicosis, which mostly results in the gradual fibrosis of lung tissue. Previous research has demonstrated that hypoxia-inducible factor-1α (HIF-1α) and glycolysis-related genes are up-regulated in silicosis. The role of 2-deoxy-D-glucose (2-DG) as an inhibitor of glycolysis in silicosis mouse models and its molecular mechanisms remain unclear. Therefore, we used 2-DG to observe its effect on pulmonary inflammation and fibrosis in a silicosis mouse model. Furthermore, in vitro cell experiments were conducted to explore the specific mechanisms of HIF-1α. Our study found that 2-DG down-regulated HIF-1α levels in alveolar macrophages induced by silica exposure and reduced the interleukin-1β (IL-1β) level in pulmonary inflammation. Additionally, 2-DG reduced silica-induced pulmonary fibrosis. From these findings, we hypothesize that 2-DG reduced glucose transporter 1 (GLUT1) expression by inhibiting glycolysis, which inhibits the expression of HIF-1α and ultimately reduces transcription of the inflammatory cytokine, IL-1β, thus alleviating lung damage. Therefore, we elucidated the important regulatory role of HIF-1α in an experimental silicosis model and the potential defense mechanisms of 2-DG. These results provide a possible effective strategy for 2-DG in the treatment of silicosis.
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Affiliation(s)
- Yuting Lu
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China
| | - Min Mu
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, China; Joint Research Center of Occupational Medicine and Health, Institute of Grand Health, Hefei Comprehensive National Science Center, Anhui University of Science and Technology, China.
| | - Xiaotian RenChen
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China
| | - Wenyang Wang
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, China
| | - Yingrui Zhu
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China
| | - Meiping Zhong
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China
| | - Yuerong Jiang
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China
| | - Xinrong Tao
- School of Public Health, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, China; Joint Research Center of Occupational Medicine and Health, Institute of Grand Health, Hefei Comprehensive National Science Center, Anhui University of Science and Technology, China
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Dzien P, Mackintosh A, Malviya G, Johnson E, Soloviev D, Brown G, Uribe AH, Nixon C, Lyons SK, Maddocks O, Blyth K, Lewis DY. Positron emission tomography imaging of the sodium iodide symporter senses real-time energy stress in vivo. Cancer Metab 2023; 11:14. [PMID: 37679822 PMCID: PMC10486058 DOI: 10.1186/s40170-023-00314-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 08/15/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Tissue environment is critical in determining tumour metabolic vulnerability. However, in vivo drug testing is slow and waiting for tumour growth delay may not be the most appropriate endpoint for metabolic treatments. An in vivo method for measuring energy stress would rapidly determine tumour targeting in a physiologically relevant environment. The sodium-iodide symporter (NIS) is an imaging reporter gene whose protein product co-transports sodium and iodide, and positron emission tomography (PET) radiolabelled anions into the cell. Here, we show that PET imaging of NIS-mediated radiotracer uptake can rapidly visualise tumour energy stress within minutes following in vivo treatment. METHODS We modified HEK293T human embryonic kidney cells, and A549 and H358 lung cancer cells to express transgenic NIS. Next, we subjected these cells and implanted tumours to drugs known to induce metabolic stress to observe the impact on NIS activity and energy charge. We used [18F]tetrafluoroborate positron emission tomography (PET) imaging to non-invasively image NIS activity in vivo. RESULTS NIS activity was ablated by treating HEK293T cells in vitro, with the Na+/K+ ATPase inhibitor digoxin, confirming that radiotracer uptake was dependent on the sodium-potassium concentration gradient. NIS-mediated radiotracer uptake was significantly reduced (- 58.2%) following disruptions to ATP re-synthesis by combined glycolysis and oxidative phosphorylation inhibition in HEK293T cells and by oxidative phosphorylation inhibition (- 16.6%) in A549 cells in vitro. PET signal was significantly decreased (- 56.5%) within 90 min from the onset of treatment with IACS-010759, an oxidative phosphorylation inhibitor, in subcutaneous transgenic A549 tumours in vivo, showing that NIS could rapidly and sensitively detect energy stress non-invasively, before more widespread changes to phosphorylated AMP-activated protein kinase, phosphorylated pyruvate dehydrogenase, and GLUT1 were detectable. CONCLUSIONS NIS acts as a rapid metabolic sensor for drugs that lead to ATP depletion. PET imaging of NIS could facilitate in vivo testing of treatments targeting energetic pathways, determine drug potency, and expedite metabolic drug development.
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Affiliation(s)
- Piotr Dzien
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Agata Mackintosh
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Gaurav Malviya
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Emma Johnson
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Dmitry Soloviev
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Gavin Brown
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | | | - Colin Nixon
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Scott K Lyons
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY, 11724, USA
| | - Oliver Maddocks
- School of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Karen Blyth
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
- School of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - David Y Lewis
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK.
- School of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK.
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3
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Han Y, Zhang Y, Yuan K, Wu Y, Jin X, Huang X. Hyperosmolarity promotes macrophage pyroptosis by driving the glycolytic reprogramming of corneal epithelial cells in dry eye disease. Front Med 2023; 17:781-795. [PMID: 37266854 DOI: 10.1007/s11684-023-0986-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 01/28/2023] [Indexed: 06/03/2023]
Abstract
Tear film hyperosmolarity plays a core role in the development of dry eye disease (DED) by mediating the disruption of ocular surface homeostasis and triggering inflammation in ocular surface epithelium. In this study, the mechanisms involving the hyperosmolar microenvironment, glycolysis mediating metabolic reprogramming, and pyroptosis were explored clinically, in vitro, and in vivo. Data from DED clinical samples indicated that the expression of glycolysis and pyroptosis-related genes, including PKM2 and GSDMD, was significantly upregulated and that the secretion of IL-1β significantly increased. In vitro, the indirect coculture of macrophages derived from THP-1 and human corneal epithelial cells (HCECs) was used to discuss the interaction among cells. The hyperosmolar environment was found to greatly induce HCECs' metabolic reprogramming, which may be the primary cause of the subsequent inflammation in macrophages upon the activation of the related gene and protein expression. 2-Deoxy-d-glucose (2-DG) could inhibit the glycolysis of HCECs and subsequently suppress the pyroptosis of macrophages. In vivo, 2-DG showed potential efficacy in relieving DED activity and could significantly reduce the overexpression of genes and proteins related to glycolysis and pyroptosis. In summary, our findings suggested that hyperosmolar-induced glycolytic reprogramming played an active role in promoting DED inflammation by mediating pyroptosis.
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Affiliation(s)
- Yu Han
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China
| | - Yu Zhang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China
| | - Kelan Yuan
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China
| | - Yaying Wu
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China
| | - Xiuming Jin
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China
| | - Xiaodan Huang
- Eye Center, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, 310009, China.
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Tan WJT, Santos-Sacchi J, Tonello J, Shanker A, Ivanova AV. Pharmacological Modulation of Energy and Metabolic Pathways Protects Hearing in the Fus1/Tusc2 Knockout Model of Mitochondrial Dysfunction and Oxidative Stress. Antioxidants (Basel) 2023; 12:1225. [PMID: 37371955 DOI: 10.3390/antiox12061225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/23/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Tightly regulated and robust mitochondrial activities are critical for normal hearing. Previously, we demonstrated that Fus1/Tusc2 KO mice with mitochondrial dysfunction exhibit premature hearing loss. Molecular analysis of the cochlea revealed hyperactivation of the mTOR pathway, oxidative stress, and altered mitochondrial morphology and quantity, suggesting compromised energy sensing and production. Here, we investigated whether the pharmacological modulation of metabolic pathways using rapamycin (RAPA) or 2-deoxy-D-glucose (2-DG) supplementation can protect against hearing loss in female Fus1 KO mice. Additionally, we aimed to identify mitochondria- and Fus1/Tusc2-dependent molecular pathways and processes critical for hearing. We found that inhibiting mTOR or activating alternative mitochondrial energetic pathways to glycolysis protected hearing in the mice. Comparative gene expression analysis revealed the dysregulation of critical biological processes in the KO cochlea, including mitochondrial metabolism, neural and immune responses, and the cochlear hypothalamic-pituitary-adrenal axis signaling system. RAPA and 2-DG mostly normalized these processes, although some genes showed a drug-specific response or no response at all. Interestingly, both drugs resulted in a pronounced upregulation of critical hearing-related genes not altered in the non-treated KO cochlea, including cytoskeletal and motor proteins and calcium-linked transporters and voltage-gated channels. These findings suggest that the pharmacological modulation of mitochondrial metabolism and bioenergetics may restore and activate processes critical for hearing, thereby protecting against hearing loss.
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Affiliation(s)
- Winston J T Tan
- Department of Physiology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland 1023, New Zealand
- Department of Surgery (Otolaryngology), Yale University School of Medicine, New Haven, CT 06510, USA
| | - Joseph Santos-Sacchi
- Department of Surgery (Otolaryngology), Yale University School of Medicine, New Haven, CT 06510, USA
| | - Jane Tonello
- School of Medicine, Meharry Medical College, Nashville, TN 37208, USA
| | - Anil Shanker
- School of Medicine, Meharry Medical College, Nashville, TN 37208, USA
| | - Alla V Ivanova
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA
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Zhang Y, Ren Y, Xu H, Li L, Qian F, Wang L, Quan A, Ma H, Liu H, Yu R. Cascade-Responsive 2-DG Nanocapsules Encapsulate aV-siCPT1C Conjugates to Inhibit Glioblastoma through Multiple Inhibition of Energy Metabolism. ACS Appl Mater Interfaces 2023; 15:10356-10370. [PMID: 36787514 DOI: 10.1021/acsami.2c19285] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Aerobic glycolysis is the primary energy supply mode for glioblastoma (GBM) cells to maintain growth and proliferation. However, due to the metabolic reprogramming of tumor cells, GBM can still produce energy through fatty acid oxidation (FAO) and amino acid metabolism after blocking this metabolic pathway. In addition, GBM can provide a steady stream of nutrients through high-density neovascularization, which puts the block energy metabolism therapy for glioma in the situation of "internal and external problems". Herein, based on the abundant reactive oxygen species (ROS) and glutathione (GSH) in the tumor microenvironment and cytoplasm, we successfully designed and developed a cascade-responsive 2-DG nanocapsule delivery system. This nanocapsule contains a conjugate of anti-VEGFR2 monoclonal antibody (aV) and CPT1C siRNA (siCPT1C) linked by a disulfide cross-linker (aV-siCPT1C). The surface of this nanocapsule (2-DG/aV-siCPT1C NC) is loaded with the glycolysis inhibitor 2-DG, and it utilizes GLUT1, which is highly expressed on the blood-brain barrier (BBB) and GBM cells, to effectively penetrate the BBB and target GBM. The nanocapsule realizes multidrug codelivery, jointly blocks glycolysis and FAO of GBM, and reduces angiogenesis. Meanwhile, it also solves the problems of low delivery efficiency of mAb in the central nervous system (CNS) and easy degradation of siRNA. In general, this drug joint delivery strategy could open up a new avenue for the treatment of GBM.
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Affiliation(s)
- Yongkang Zhang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Yanhong Ren
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Haoyue Xu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Linfeng Li
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Feng Qian
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
- Department of Neurosurgery, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu China
| | - Lansheng Wang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Ankang Quan
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Hongwei Ma
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
| | - Hongmei Liu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Rutong Yu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, China
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
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Khatibi VA, Rahdar M, Rezaei M, Davoudi S, Nazari M, Mohammadi M, Raoufy MR, Mirnajafi-Zadeh J, Hosseinmardi N, Behzadi G, Janahmadi M. The Glycolysis Inhibitor 2-Deoxy-D-Glucose Exerts Different Neuronal Effects at Circuit and Cellular Levels, Partially Reverses Behavioral Alterations and does not Prevent NADPH Diaphorase Activity Reduction in the Intrahippocampal Kainic Acid Model of Temporal Lobe Epilepsy. Neurochem Res 2023; 48:210-228. [PMID: 36064822 PMCID: PMC9444119 DOI: 10.1007/s11064-022-03740-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/31/2022] [Accepted: 08/27/2022] [Indexed: 01/11/2023]
Abstract
Temporal lobe epilepsy is the most drug-resistant type with the highest incidence among the other focal epilepsies. Metabolic manipulations are of great interest among others, glycolysis inhibitors like 2-deoxy D-glucose (2-DG) being the most promising intervention. Here, we sought to investigate the effects of 2-DG treatment on cellular and circuit level electrophysiological properties using patch-clamp and local field potentials recordings and behavioral alterations such as depression and anxiety behaviors, and changes in nitric oxide signaling in the intrahippocampal kainic acid model. We found that epileptic animals were less anxious, more depressed, with more locomotion activity. Interestingly, by masking the effect of increased locomotor activity on the parameters of the zero-maze test, no altered anxiety behavior was noted in epileptic animals. However, 2-DG could partially reverse the behavioral changes induced by kainic acid. The findings also showed that 2-DG treatment partially suppresses cellular level alterations while failing to reverse circuit-level changes resulting from kainic acid injection. Analysis of NADPH-diaphorase positive neurons in the CA1 area of the hippocampus revealed that the number of positive neurons was significantly reduced in dorsal CA1 of the epileptic animals and 2-DG treatment did not affect the diminishing effect of kainic acid on NADPH-d+ neurons in the CA1 area. In the control group receiving 2-DG, however, an augmented NADPH-d+ cell number was noted. These data suggest that 2-DG cannot suppress epileptiform activity at the circuit-level in this model of epilepsy and therefore, may fail to control the seizures in temporal lobe epilepsy cases.
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Affiliation(s)
- Vahid Ahli Khatibi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mona Rahdar
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmoud Rezaei
- Department of Physiology, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Shima Davoudi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Milad Nazari
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Mohammad Mohammadi
- Department of Biomedical Engineering, McGill University, Montreal, QC, Canada
| | - Mohammad Reza Raoufy
- Department of Physiology, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Javad Mirnajafi-Zadeh
- Department of Physiology, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Narges Hosseinmardi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Gila Behzadi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahyar Janahmadi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Wali L, Karbiener M, Chou S, Kovtunyk V, Adonyi A, Gösler I, Contreras X, Stoeva D, Blaas D, Stöckl J, Kreil TR, Gualdoni GA, Gorki AD. Host-directed therapy with 2-Deoxy-D-glucose inhibits human rhinoviruses, endemic coronaviruses, and SARS-CoV-2. J Virus Erad 2022; 8:100305. [PMID: 36514716 PMCID: PMC9731833 DOI: 10.1016/j.jve.2022.100305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022] Open
Abstract
Rhinoviruses (RVs) and coronaviruses (CoVs) upregulate host cell metabolic pathways such as glycolysis to meet their bioenergetic demands for rapid multiplication. Using the glycolysis inhibitor 2-deoxy-D-glucose (2-DG), we assessed the dose-dependent inhibition of viral replication of minor- and major-receptor group RVs in epithelial cells. 2-DG disrupted RV infection cycle by inhibiting template negative-strand as well as genomic positive-strand RNA synthesis, resulting in less progeny virus and RV-mediated cell death. Assessment of 2-DG´s intracellular kinetics revealed that after a short-exposure to 2-DG, the active intermediate, 2-DG6P, is stored intracellularly for several hours. Finally, we confirmed the antiviral effect of 2-DG on pandemic SARS-CoV-2 and showed for the first time that 2-DG also reduces replication of endemic human coronaviruses (HCoVs). These results provide further evidence that 2-DG could be utilized as a broad-spectrum antiviral.
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Affiliation(s)
| | | | | | | | | | - Irene Gösler
- Center of Medical Biochemistry, Max Perutz Labs, Vienna Biocenter, Medical University of Vienna, Austria
| | | | | | - Dieter Blaas
- Center of Medical Biochemistry, Max Perutz Labs, Vienna Biocenter, Medical University of Vienna, Austria
| | - Johannes Stöckl
- Institute of Immunology, Center of Pathophysiology, Immunology & Infectiology, Medical University of Vienna, Austria
| | - Thomas R. Kreil
- Global Pathogen Safety, Takeda Manufacturing Austria AG, Austria
| | | | - Anna-Dorothea Gorki
- G.ST Antivirals GmbH, Austria,Corresponding author. G.ST Antivirals GmbH, Doktor-Bohr-Gasse 7 (VBC6), 1030, Vienna, Austria
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Gu SH, Chang CH, Lin PL. Bombyxin-stimulated ecdysteroidogenesis in relation to sugar transporter/trehalase expressions in Bombyx prothoracic glands. Insect Biochem Mol Biol 2022; 151:103864. [PMID: 36336193 DOI: 10.1016/j.ibmb.2022.103864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/22/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Our previous studies showed that bombyxin stimulated ecdysteroidogenesis in Bombyx mori prothoracic glands (PGs) during a long-term incubation period in a phosphatidylinositol 3-kinase (PI3K)/Akt-dependent manner. In the present study, we further investigated the downstream signaling cascade in bombyxin-stimulated PGs. Our results showed that upon treatment with bombyxin, expression levels of the sugar transport 1 (St1) and St4 genes and trehalase 1 (Treh1) gene, but not ecdysteroid biosynthesis genes were greatly enhanced compared to the controls. Treatment with LY294002 (an inhibitor of PI3K) reduced the enhanced St1 and Treh1 expression levels, clearly indicating the involvement of PI3K. Treatment with 1 mM of mpV(pic) (a potent inhibitor of protein phosphotyrosine phosphatase and activator of insulin receptor (InR) kinase) also stimulated expression levels of the St1 and Treh1 genes, thus further confirming the involvement of the InR. Determining Treh enzyme activity showed that bombyxin treatment stimulated Treh enzyme activity in time- and PI3K-dependent manners. Validamycin A (a Treh inhibitor) blocked bombyxin-stimulated Treh enzyme activity and partly decreased bombyxin-stimulated ecdysteroidogenesis. A specific sugar transport inhibitor (cytochalasin B) and a glycolysis inhibitor (2-deoxy-D-glucose (2-DG)) also reduced bombyxin-stimulated ecdysteroidogenesis. Taken together, these results indicated that increased expressions of Sts and Treh1 and enhanced Treh enzyme activity downstream of InR/PI3K are involved in bombyxin-stimulated ecdysteroidogenesis in B. mori PGs.
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Affiliation(s)
- Shi-Hong Gu
- Department of Biology, National Museum of Natural Science, 1 Kuan-Chien Road, Taichung, 404, Taiwan, ROC.
| | - Chia-Hao Chang
- Department of Biology, National Museum of Natural Science, 1 Kuan-Chien Road, Taichung, 404, Taiwan, ROC
| | - Pei-Ling Lin
- Department of Biology, National Museum of Natural Science, 1 Kuan-Chien Road, Taichung, 404, Taiwan, ROC
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Wang W, Mu M, Zou Y, Deng S, Lu Y, Li Q, Li Z, Tao H, Wang Y, Tao X. Glycogen metabolism reprogramming promotes inflammation in coal dust-exposed lung. Ecotoxicol Environ Saf 2022; 242:113913. [PMID: 35907323 DOI: 10.1016/j.ecoenv.2022.113913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/16/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Long-term coal dust exposure triggers complex inflammatory processes in the coal workers' pneumoconiosis (CWP) lungs. The progress of the inflammation is reported to be affected by disordered cell metabolism. However, the changes in the metabolic reprogramming associated with the pulmonary inflammation induced by the coal dust particles are unknown. Herein, we show that coal dust exposure causes glycogen accumulation and the reprogramming of glucose metabolism in the CWP lung. The glycogen accumulation caused by coal dust is mainly due to macrophages, which reprogram glycogen metabolism and trigger an inflammatory response. In addition, 2-deoxy-D-glucose (2-DG) reduced glycogen content in macrophages, which was accompanied by mitigated inflammation and restrained NF-κB activation. Accordingly, we have pinpointed a novel and crucial metabolic pathway that is an essential regulator of the inflammatory phenotype of coal dust-exposed macrophages. These results shed light on new ways to regulate CWP inflammation.
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Affiliation(s)
- Wenyang Wang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Min Mu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China
| | - Yuanjie Zou
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Songsong Deng
- Department of Clinical Laboratory, Chaoyang Hospital, Huainan, China
| | - Yuting Lu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Qinglong Li
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Zeyu Li
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Huihui Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China
| | - Yun Wang
- School of Bioengineering, Huainan Normal University, Huainan 232038, China
| | - Xinrong Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China.
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10
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Bhatt AN, Kumar A, Rai Y, Kumari N, Vedagiri D, Harshan KH, Chinnadurai V, Chandna S. Glycolytic inhibitor 2-deoxy-d-glucose attenuates SARS-CoV-2 multiplication in host cells and weakens the infective potential of progeny virions. Life Sci 2022; 295:120411. [PMID: 35181310 PMCID: PMC8847085 DOI: 10.1016/j.lfs.2022.120411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/14/2022] [Accepted: 02/14/2022] [Indexed: 11/29/2022]
Abstract
Aims Virus-infected host cells switch their metabolism to a more glycolytic phenotype, required for new virion synthesis and packaging. Therefore, we investigated the effect and mechanistic action of glycolytic inhibitor 2-Deoxy-d-glucose (2-DG) on virus multiplication in host cells following SARS-CoV-2 infection. Main methods SARS-CoV-2 induced change in glycolysis was examined in Vero E6 cells. Effect of 2-DG on virus multiplication was evaluated by RT-PCR (N and RdRp genes) analysis, protein expression analysis of Nucleocapsid (N) and Spike (S) proteins and visual indication of cytopathy effect (CPE), The mass spectrometry analysis was performed to examine the 2-DG induced change in glycosylation status of receptor binding domain (RBD) in SARS-CoV-2 spike protein. Key findings We observed SARS-COV-2 infection induced increased glucose influx and glycolysis, resulting in selectively high accumulation of the fluorescent glucose analog, 2-NBDG in Vero E6 cells. 2-DG inhibited glycolysis, reduced virus multiplication and alleviated cells from virus-induced cytopathic effect (CPE) in SARS-CoV-2 infected cells. The progeny virions produced from 2-DG treated cells were found unglycosylated at crucial N-glycosites (N331 and N343) of the receptor-binding domain (RBD) in the spike protein, resulting in production of defective progeny virions with compromised infective potential. Significance The mechanistic study revealed that the inhibition of SARS-COV-2 multiplication is attributed to 2-DG induced glycolysis inhibition and possibly un-glycosylation of the spike protein, also. Therefore, based on its previous human trials in different types of Cancer and Herpes patients, it could be a potential molecule to study in COVID-19 patients.
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Affiliation(s)
| | - Abhishek Kumar
- Institute of Nuclear Medicine & Allied Sciences, Delhi, India
| | - Yogesh Rai
- Institute of Nuclear Medicine & Allied Sciences, Delhi, India
| | - Neeraj Kumari
- Institute of Nuclear Medicine & Allied Sciences, Delhi, India
| | - Dhiviya Vedagiri
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad 500007, India; Academy for Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Krishnan H Harshan
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad 500007, India; Academy for Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | - Sudhir Chandna
- Institute of Nuclear Medicine & Allied Sciences, Delhi, India
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11
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Sahu KK, Kumar R. Role of 2-Deoxy-D-Glucose ( 2-DG) in COVID-19 disease: A potential game-changer. J Family Med Prim Care 2021; 10:3548-3552. [PMID: 34934645 PMCID: PMC8653447 DOI: 10.4103/jfmpc.jfmpc_1338_21] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 11/18/2022] Open
Abstract
Virus infections can cause tissue damage in many ways. Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), a cause of the current COVID-19 pandemic, has been extensively studied so far to investigate its pathophysiology and evaluate its impact on the metabolic system of human cells. This has given a lead to study the role of 2-deoxy-D-glucose (2DG) against COVID-19 disease. We hereby would like to briefly discuss the concept and rationale behind the use of 2DG COVID-19.
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Affiliation(s)
- Kamal K Sahu
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States
| | - Raman Kumar
- President, Academy of Family Physicians of India, New Delhi, India
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12
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Cheng J, Zhang R, Xu Z, Ke Y, Sun R, Yang H, Zhang X, Zhen X, Zheng LT. Early glycolytic reprogramming controls microglial inflammatory activation. J Neuroinflammation 2021; 18:129. [PMID: 34107997 PMCID: PMC8191212 DOI: 10.1186/s12974-021-02187-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 05/30/2021] [Indexed: 12/25/2022] Open
Abstract
Background Microglial activation-mediated neuroinflammation plays an important role in the progression of neurodegenerative diseases. Inflammatory activation of microglial cells is often accompanied by a metabolic switch from oxidative phosphorylation to aerobic glycolysis. However, the roles and molecular mechanisms of glycolysis in microglial activation and neuroinflammation are not yet fully understood. Methods The anti-inflammatory effects and its underlying mechanisms of glycolytic inhibition in vitro were examined in lipopolysaccharide (LPS) activated BV-2 microglial cells or primary microglial cells by enzyme-linked immunosorbent assay (ELISA), quantitative reverse transcriptase-polymerase chain reaction (RT-PCR), Western blot, immunoprecipitation, flow cytometry, and nuclear factor kappa B (NF-κB) luciferase reporter assays. The anti-inflammatory and neuroprotective effects of glycolytic inhibitor, 2-deoxoy-d-glucose (2-DG) in vivo were measured in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-or LPS-induced Parkinson’s disease (PD) models by immunofluorescence staining, behavior tests, and Western blot analysis. Results We found that LPS rapidly increased glycolysis in microglial cells, and glycolysis inhibitors (2-DG and 3-bromopyruvic acid (3-BPA)), siRNA glucose transporter type 1 (Glut-1), and siRNA hexokinase (HK) 2 abolished LPS-induced microglial cell activation. Mechanistic studies demonstrated that glycolysis inhibitors significantly inhibited LPS-induced phosphorylation of mechanistic target of rapamycin (mTOR), an inhibitor of nuclear factor-kappa B kinase subunit beta (IKKβ), and NF-kappa-B inhibitor alpha (IκB-α), degradation of IκBα, nuclear translocation of p65 subunit of NF-κB, and NF-κB transcriptional activity. In addition, 2-DG significantly inhibited LPS-induced acetylation of p65/RelA on lysine 310, which is mediated by NAD-dependent protein deacetylase sirtuin-1 (SIRT1) and is critical for NF-κB activation. A coculture study revealed that 2-DG reduced the cytotoxicity of activated microglia toward MES23.5 dopaminergic neuron cells with no direct protective effect. In an LPS-induced PD model, 2-DG significantly ameliorated neuroinflammation and subsequent tyrosine hydroxylase (TH)-positive cell loss. Furthermore, 2-DG also reduced dopaminergic cell death and microglial activation in the MPTP-induced PD model. Conclusions Collectively, our results suggest that glycolysis is actively involved in microglial activation. Inhibition of glycolysis can ameliorate microglial activation-related neuroinflammatory diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02187-y.
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Affiliation(s)
- Junjie Cheng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Rong Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Zhirou Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Youliang Ke
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Renjuan Sun
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Huicui Yang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Xiaohu Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Xuechu Zhen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China.
| | - Long-Tai Zheng
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, Jiangsu, China.
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13
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Nile DL, Rae C, Walker DJ, Waddington JC, Vincent I, Burgess K, Gaze MN, Mairs RJ, Chalmers AJ. Inhibition of glycolysis and mitochondrial respiration promotes radiosensitisation of neuroblastoma and glioma cells. Cancer Metab 2021; 9:24. [PMID: 34011385 PMCID: PMC8136224 DOI: 10.1186/s40170-021-00258-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Neuroblastoma accounts for 7% of paediatric malignancies but is responsible for 15% of all childhood cancer deaths. Despite rigorous treatment involving chemotherapy, surgery, radiotherapy and immunotherapy, the 5-year overall survival rate of high-risk disease remains < 40%, highlighting the need for improved therapy. Since neuroblastoma cells exhibit aberrant metabolism, we determined whether their sensitivity to radiotherapy could be enhanced by drugs affecting cancer cell metabolism. METHODS Using a panel of neuroblastoma and glioma cells, we determined the radiosensitising effects of inhibitors of glycolysis (2-DG) and mitochondrial function (metformin). Mechanisms underlying radiosensitisation were determined by metabolomic and bioenergetic profiling, flow cytometry and live cell imaging and by evaluating different treatment schedules. RESULTS The radiosensitising effects of 2-DG were greatly enhanced by combination with the antidiabetic biguanide, metformin. Metabolomic analysis and cellular bioenergetic profiling revealed this combination to elicit severe disruption of key glycolytic and mitochondrial metabolites, causing significant reductions in ATP generation and enhancing radiosensitivity. Combination treatment induced G2/M arrest that persisted for at least 24 h post-irradiation, promoting apoptotic cell death in a large proportion of cells. CONCLUSION Our findings demonstrate that the radiosensitising effect of 2-DG was significantly enhanced by its combination with metformin. This clearly demonstrates that dual metabolic targeting has potential to improve clinical outcomes in children with high-risk neuroblastoma by overcoming radioresistance.
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Affiliation(s)
- Donna L Nile
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK.
- Present Address: Integrated Covid Hub North East (ICHNE) Innovation Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE4 5BX, UK.
| | - Colin Rae
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - David J Walker
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: School of Medicine, University of Dundee, Dundee, DD1 4HN, UK
| | | | - Isabel Vincent
- Glasgow Polyomics Facility, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Karl Burgess
- Glasgow Polyomics Facility, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: School of Biological Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Mark N Gaze
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, NW1 2BU, UK
| | - Robert J Mairs
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Anthony J Chalmers
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
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14
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Zhang XT, Hu XB, Wang HL, Kan WJ, Xu L, Wang ZJ, Xiang YQ, Wu WB, Feng B, Li JN, Gao AH, Dong TC, Xia CM, Zhou YB, Li J. Activation of unfolded protein response overcomes Ibrutinib resistance in diffuse large B-cell lymphoma. Acta Pharmacol Sin 2021; 42:814-823. [PMID: 32855532 PMCID: PMC8115113 DOI: 10.1038/s41401-020-00505-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 08/03/2020] [Indexed: 02/01/2023] Open
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most widespread type of non-Hodgkin lymphoma (NHL). As the most aggressive form of the DLBCL, the activated B-cell-like (ABC) subtype is often resistant to standard chemotherapies. Bruton's tyrosine kinase (BTK) inhibitor ibrutinib provides a potential therapeutic approach for the DLBCL but fails to improve the outcome in the phase III trial. In the current study, we investigated the molecular mechanisms underlying ibrutinib resistance and explored new combination therapy with ibrutinib. We generated an ibrutinib-resistant ABC-DLBCL cell line (OCI-ly10-IR) through continuous exposure to ibrutinib. Transcriptome analysis of the parental and ibrutinib-resistant cell lines revealed that the ibrutinib-resistant cells had significantly lower expression of the unfolded protein response (UPR) marker genes. Overexpression of one UPR branch-XBP1s greatly potentiated ibrutinib-induced apoptosis in both sensitive and resistant cells. The UPR inhibitor tauroursodeoxycholic acid (TUDCA) partially reduced the apoptotic rate induced by the ibrutinib in sensitive cells. The UPR activator 2-deoxy-D-glucose (2-DG) in combination with the ibrutinib triggered even greater cell growth inhibition, apoptosis, and stronger calcium (Ca2+) flux inhibition than either of the agents alone. A combination treatment of ibrutinib (15 mg·kg-1·d-1, po.) and 2-DG (500 mg/kg, po, b.i.d.) synergistically retarded tumor growth in NOD/SCID mice bearing OCI-ly10-IR xenograft. In addition, ibrutinib induced the UPR in the sensitive cell lines but not in the resistant cell lines of the DLBCL. There was also a combined synergistic effect in the primary resistant DLBCL cell lines. Overall, our results suggest that targeting the UPR could be a potential combination strategy to overcome ibrutinib resistance in the DLBCL.
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MESH Headings
- Adenine/analogs & derivatives
- Adenine/therapeutic use
- Animals
- Antineoplastic Agents/therapeutic use
- Apoptosis/drug effects
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Deoxyglucose/therapeutic use
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/physiology
- Drug Synergism
- Female
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/physiopathology
- Mice, Inbred NOD
- Mice, SCID
- Piperidines/therapeutic use
- Unfolded Protein Response/drug effects
- Unfolded Protein Response/physiology
- X-Box Binding Protein 1/genetics
- X-Box Binding Protein 1/metabolism
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Xiao-Tuan Zhang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Xiao-Bei Hu
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Han-Lin Wang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
- School of pharmacy, Fudan University, Shanghai, 201203, China
| | - Wei-Juan Kan
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Lei Xu
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 200031, China
| | - Zhi-Jia Wang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, China
| | - Yu-Qi Xiang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 200031, China
| | - Wen-Biao Wu
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Bo Feng
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, China
| | - Jia-Nan Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - An-Hui Gao
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Tian-Cheng Dong
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Chun-Mei Xia
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yu-Bo Zhou
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
| | - Jia Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 200031, China.
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15
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Maitituoheti M, Keung EZ, Tang M, Yan L, Alam H, Han G, Singh AK, Raman AT, Terranova C, Sarkar S, Orouji E, Amin SB, Sharma S, Williams M, Samant NS, Dhamdhere M, Zheng N, Shah T, Shah A, Axelrad JB, Anvar NE, Lin YH, Jiang S, Chang EQ, Ingram DR, Wang WL, Lazar A, Lee MG, Muller F, Wang L, Ying H, Rai K. Enhancer Reprogramming Confers Dependence on Glycolysis and IGF Signaling in KMT2D Mutant Melanoma. Cell Rep 2020; 33:108293. [PMID: 33086062 PMCID: PMC7649750 DOI: 10.1016/j.celrep.2020.108293] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/11/2020] [Accepted: 09/29/2020] [Indexed: 12/16/2022] Open
Abstract
Histone methyltransferase KMT2D harbors frequent loss-of-function somatic point mutations in several tumor types, including melanoma. Here, we identify KMT2D as a potent tumor suppressor in melanoma through an in vivo epigenome-focused pooled RNAi screen and confirm the finding by using a genetically engineered mouse model (GEMM) based on conditional and melanocyte-specific deletion of KMT2D. KMT2D-deficient tumors show substantial reprogramming of key metabolic pathways, including glycolysis. KMT2D deficiency aberrantly upregulates glycolysis enzymes, intermediate metabolites, and glucose consumption rates. Mechanistically, KMT2D loss causes genome-wide reduction of H3K4me1-marked active enhancer chromatin states. Enhancer loss and subsequent repression of IGFBP5 activates IGF1R-AKT to increase glycolysis in KMT2D-deficient cells. Pharmacological inhibition of glycolysis and insulin growth factor (IGF) signaling reduce proliferation and tumorigenesis preferentially in KMT2D-deficient cells. We conclude that KMT2D loss promotes tumorigenesis by facilitating an increased use of the glycolysis pathway for enhanced biomass needs via enhancer reprogramming, thus presenting an opportunity for therapeutic intervention through glycolysis or IGF pathway inhibitors.
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Affiliation(s)
- Mayinuer Maitituoheti
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Emily Z Keung
- Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ming Tang
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Liang Yan
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hunain Alam
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guangchun Han
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Anand K Singh
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ayush T Raman
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA; Graduate Program in Quantitative Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Christopher Terranova
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sharmistha Sarkar
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Elias Orouji
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Samir B Amin
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - Sneha Sharma
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Maura Williams
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Neha S Samant
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mayura Dhamdhere
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Norman Zheng
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tara Shah
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Amiksha Shah
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jacob B Axelrad
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nazanin E Anvar
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yu-Hsi Lin
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shan Jiang
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Edward Q Chang
- Institute for Applied Cancer Science, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Davis R Ingram
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wei-Lien Wang
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Alexander Lazar
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Min Gyu Lee
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Florian Muller
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Linghua Wang
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Haoqiang Ying
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kunal Rai
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA; Graduate Program in Quantitative Sciences, Baylor College of Medicine, Houston, TX, USA; Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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16
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Fujita M, Imadome K, Somasundaram V, Kawanishi M, Karasawa K, Wink DA. Metabolic characterization of aggressive breast cancer cells exhibiting invasive phenotype: impact of non-cytotoxic doses of 2-DG on diminishing invasiveness. BMC Cancer 2020; 20:929. [PMID: 32993545 PMCID: PMC7525976 DOI: 10.1186/s12885-020-07414-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/15/2020] [Indexed: 01/08/2023] Open
Abstract
Background Metabolic reprogramming is being recognized as a fundamental hallmark of cancer, and efforts to identify drugs that can target cancer metabolism are underway. In this study, we used human breast cancer (BC) cell lines and established their invading phenotype (INV) collected from transwell inserts to compare metabolome differences and evaluate prognostic significance of the metabolome in aggressive BC invasiveness. Methods The invasiveness of seven human BC cell lines were compared using the transwell invasion assay. Among these, INV was collected from SUM149, which exhibited the highest invasiveness. Levels of metabolites in INV were compared with those of whole cultured SUM149 cells (WCC) using CE-TOFMS. The impact of glycolysis in INV was determined by glucose uptake assay using fluorescent derivative of glucose (2-NBDG), and significance of glycolysis, or tricarboxylic acid cycle (TCA) and electron transport chain (ETC) in the invasive process were further determined in aggressive BC cell lines, SUM149, MDA-MB-231, HCC1937, using invasion assays in the presence or absence of inhibitors of glycolysis, TCA cycle or ETC. Results SUM149 INV sub-population exhibited a persistent hyperinvasive phenotype. INV were hyper-glycolytic with increased glucose (2-NBDG) uptake; diminished glucose-6-phosphate (G6P) levels but elevated pyruvate and lactate, along with higher expression of phosphorylated-pyruvate dehydrogenase (pPDH) compared to WCC. Notably, inhibiting of glycolysis with lower doses of 2-DG (1 mM), non-cytotoxic to MDA-MB-231 and HCC1937, was effective in diminishing invasiveness of aggressive BC cell lines. In contrast, 3-Nitropropionic acid (3-NA), an inhibitor of succinate dehydrogenase, the enzyme that oxidizes succinate to fumarate in TCA cycle, and functions as complex II of ETC, had no significant effect on their invasiveness, although levels of TCA metabolites or detection of mitochondrial membrane potential with JC-1 staining, indicated that INV cells originally had functional TCA cycles and membrane potential. Conclusions Hyper-glycolytic phenotype of invading cells caters to rapid energy production required for invasion while TCA cycle/ETC cater to cellular energy needs for sustenance in aggressive BC. Lower, non-cytotoxic doses of 2-DG can hamper invasion and can potentially be used as an adjuvant with other anti-cancer therapies without the usual side-effects associated with cytotoxic doses.
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Affiliation(s)
- Mayumi Fujita
- Department of Basic Medical Science for Radiation Damages, National Institute of Radiological Sciences, NIRS, National Institute for Quantum and Radiological Science and Technology, QST, 4-9-1, Anagawa, Inage-ku, Chiba-shi, Chiba-ken, Japan.
| | - Kaori Imadome
- Department of Basic Medical Science for Radiation Damages, National Institute of Radiological Sciences, NIRS, National Institute for Quantum and Radiological Science and Technology, QST, 4-9-1, Anagawa, Inage-ku, Chiba-shi, Chiba-ken, Japan
| | - Veena Somasundaram
- Laboratory of Cancer Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Miki Kawanishi
- Department of Radiation Oncology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kumiko Karasawa
- Department of Radiation Oncology, Tokyo Women's Medical University, Tokyo, Japan
| | - David A Wink
- Laboratory of Cancer Immunometabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
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Gupta S, Dwarakanath BS. Modulation of Immuno-biome during Radio-sensitization of Tumors by Glycolytic Inhibitors. Curr Med Chem 2020; 27:4002-4015. [PMID: 29852858 DOI: 10.2174/0929867325666180601101145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/15/2018] [Accepted: 01/24/2018] [Indexed: 12/12/2022]
Abstract
The Tumor Microenvironment (TME) comprising stromal cells, fibroblasts and various components of the immune system forms a pro-tumorigenic cocoon around the tumor cells with the reprogramming of the metabolism in the form of Warburg phenotype (enhanced aerobic glycolysis) in tumor as well as non-tumor cells. This reprogramming plays a significant role in suppressing the immune response leading to the survival and proliferation of tumor cells and resistance to therapies. Therefore, there is a considerable interest in developing strategies involving metabolic modifiers to improve the therapeutic efficacy that restores immune competence, besides enhancing the direct effects on tumor cells. Inhibitors of glycolysis like 2-deoxy-D-glucose (2-DG; a hexokinase inhibitor), dichloroacetate and small molecule inhibitors of lactate transport (MCT-1) are some of the metabolic modifiers investigated for their therapeutic as well as adjuvant potential. Among these, 2-DG has been widely investigated and established as an ideal adjuvant in the radio- and chemotherapy of tumors. Modulation of the immuno-biome in the form of cytokine shifts, differential transcriptional regulation, abrogation of immunosuppressive network and reduced accumulation of lactate are some of the contributing factors for immune stimulation linked to the radio- and chemosensitization by glycolytic inhibitors.
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Affiliation(s)
- Seema Gupta
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20007, United States
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18
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Cermak S, Meng Q, Peng K, Baldwin S, Mejías-Aponte CA, Yang Y, Lu H. Focal transcranial magnetic stimulation in awake rats: Enhanced glucose uptake in deep cortical layers. J Neurosci Methods 2020; 339:108709. [PMID: 32259609 DOI: 10.1016/j.jneumeth.2020.108709] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/21/2020] [Accepted: 03/28/2020] [Indexed: 01/14/2023]
Abstract
BACKGROUND Transcranial magnetic stimulation (TMS) is an emerging neuromodulation tool. However, preclinical models of TMS are limited. OBJECTIVE To develop a method for performing TMS in awake rats and to characterize neuronal response to TMS by mapping glucose uptake following TMS administration. METHODS A headpost was implanted into rat skull serving as a refence to guide TMS target. Motor threshold measurement was used as the metric to assess the consistency in TMS delivery across animals and across sessions. Using a fluorescent glucose analogue (2-NBDG) as a marker of neuronal activity, we mapped glucose uptake in response to TMS of the rat motor cortex. RESULTS The average motor threshold (n = 41) was 34.6 ± 6.3 % of maximum stimulator output (MSO). The variability of motor threshold across animals was similar to what has been reported in human studies. Furthermore, there was no significant difference in motor threshold measured across 3 separate days. Enhancement in fluorescent signals were TMS dose (power)-dependent, which centered around the motor cortex, covering an area medial-laterally 2 mm, rostral-caudally 4 mm at 55 % MSO, and 3 mm at 35 % MSO. The count of total cells with significant fluorescent signal was: 107 ± 23 (55 % MSO), 73 ± 11 (35 % MSO) and 42 ± 11 (sham, 5% MSO). CONCLUSIONS Our method allows for consistent motor threshold assessment for longitudinal studies. Notably, cells with fluorescent signal enhancement were consistently aggregated in deep cortical layers, with minimal enhancement in superficial layers COMPARISONS WITH EXISTING METHOD(S): To our knowledge, this is the first study of focal TMS in awake rodents.
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Affiliation(s)
- Samantha Cermak
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA
| | - Qinglei Meng
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA
| | - Kevin Peng
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA
| | - Simone Baldwin
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA
| | - Carlos A Mejías-Aponte
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA
| | - Yihong Yang
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA.
| | - Hanbing Lu
- Neuroimaging Research Branch, Histology Core, National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, MD, 21224, USA.
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19
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Wang F, Zhang J, Zhou G. The mTOR-glycolytic pathway promotes T-cell immunobiology in oral lichen planus. Immunobiology 2020; 225:151933. [PMID: 32201095 DOI: 10.1016/j.imbio.2020.151933] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/05/2020] [Accepted: 03/07/2020] [Indexed: 12/18/2022]
Abstract
Oral lichen planus (OLP) is a T-cell-mediated inflammatory mucosal disease. T cells require rapid metabolic reprogramming for their effector functions after activation by immunologic stimuli. The mammalian target of rapamycin (mTOR) is a central player in the metabolic reprogramming and immune responses of T cells. The present study investigated the role of mTOR in the immunometabolism of OLP. mTOR and its direct target eukaryotic initiation factor 4E binding protein 1 (4E-BP1) were highly phosphorylated in peripheral T cells of OLP patients. Rapamycin-mediated blockage of mTOR activation restrained both T-cell proliferation and DNA synthesis, promoted apoptosis, and decreased Th1/Th2 and Th17/Treg ratios. Dual blockage of mTOR and phosphatidylinositol 3-kinase (PI3K) exerted stronger inhibition on T-cell immunobiology than selective repression of PI3K alone. Rapamycin also blocked the glycolytic pathway in T cells. Moreover, glucose-induced activation of mTOR-glycolytic pathway increased T-cell proliferation, DNA synthesis, and the Th17/Treg ratio, and decreased T-cell apoptosis. In contrast, inhibition of glycolysis by 2-Deoxy-d-glucose (2-DG) yielded the opposite effects on T-cell immunobiology by blocking the mTOR pathway. In conclusion, enhanced activation of the mTOR-glycolytic pathway promoted T-cell immunobiology, suggesting that dysregulation of immunometabolism might be associated with T-cell dysfunction in OLP.
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Affiliation(s)
- Fang Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China
| | - Jing Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China; Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, China
| | - Gang Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, China; Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, China.
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20
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Wang X, Lin Y, Kemper T, Chen J, Yuan Z, Liu S, Zhu Y, Broering R, Lu M. AMPK and Akt/mTOR signalling pathways participate in glucose-mediated regulation of hepatitis B virus replication and cellular autophagy. Cell Microbiol 2019; 22:e13131. [PMID: 31746509 DOI: 10.1111/cmi.13131] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/06/2019] [Accepted: 10/17/2019] [Indexed: 12/13/2022]
Abstract
A growing consensus indicates that host metabolism plays a vital role in viral infections. Hepatitis B virus (HBV) infection occurs in hepatocytes with active glucose metabolism and may be regulated by cellular metabolism. We addressed the question whether and how glucose regulates HBV replication in hepatocytes. The low glucose concentration at 5 mM significantly promoted HBV replication via enhanced transcription and autophagy when compared with higher glucose concentrations (10 and 25 mM). At low glucose concentration, AMPK activity was increased and led to ULK1 phosphorylation at Ser 555 and LC3-II accumulation. By contrast, the mTOR pathway was activated by high glucose concentrations, resulting in reduced HBV replication. mTOR inhibition by rapamycin reversed negative effects of high glucose concentrations on HBV replication, suggesting that low glucose concentration promotes HBV replication by stimulating the AMPK/mTOR-ULK1-autophagy axis. Consistently, we found that glucose transporters inhibition using phloretin also enhanced HBV replication via increased AMPK/mTOR-ULK1-induced autophagy. Surprisingly, the glucose analogue 2-deoxy-D-glucose reduced HBV replication through activating the Akt/mTOR signalling pathway also at the low glucose concentrations. Our study reveals that glucose is an important factor for the HBV life cycle by regulating HBV transcription and posttranscriptional steps of HBV replication via cellular autophagy.
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Affiliation(s)
- Xueyu Wang
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Yong Lin
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Thekla Kemper
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Jieliang Chen
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhenghong Yuan
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), Shanghai Medical College, Fudan University, Shanghai, China
| | - Shi Liu
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Ying Zhu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Ruth Broering
- Department of Gastroenterology and Hepatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Mengji Lu
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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21
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Dai S, Peng Y, Zhu Y, Xu D, Zhu F, Xu W, Chen Q, Zhu X, Liu T, Hou C, Wu J, Miao Y. Glycolysis promotes the progression of pancreatic cancer and reduces cancer cell sensitivity to gemcitabine. Biomed Pharmacother 2019; 121:109521. [PMID: 31689601 DOI: 10.1016/j.biopha.2019.109521] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/16/2019] [Accepted: 10/01/2019] [Indexed: 01/24/2023] Open
Abstract
Previous studies have reported that increased glycolytic activity enhances chemotherapy resistance in some types of malignancies. However, whether glycolysis influences the curative effect of gemcitabine (GEM) on pancreatic cancer (PC) cells remains unclear. The aim of this study was to investigate the status of glycolysis in PC and its association with tolerance to GEM. Data from The Cancer Genome Atlas (TCGA) were used to analyze the correlation between glycolysis-related gene (GRG) expression and PC progression and prognosis. 2-Deoxy-D-glucose (2-DG) was applied to assess the effect of glycolysis inhibition on PC cell death and GEM tolerance. Expression of some GRGs, such as HK1, GAPDH, PKM2, and LDHA, was significantly associated with the prognosis of PC. Furthermore, HK1, PKLR, and LDHA expression correlated positively with PC progression. Further analysis revealed that cancer cell death was markedly enhanced following glycolysis inhibition and that the sensitivity of cancer cells to GEM was notably increased in the presence of 2-DG. Our findings indicate that abnormally increased glycolytic activity promotes the development of PC and enhances drug tolerance to GEM. 2-DG combined with GEM is a potential therapy for PC.
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Affiliation(s)
- Shangnan Dai
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Yunpeng Peng
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Yi Zhu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Dalai Xu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Feng Zhu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Wenbin Xu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Qiuyang Chen
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Xiaole Zhu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Tongtai Liu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Chaoqun Hou
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Junli Wu
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China.
| | - Yi Miao
- Pancreas Center, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China; Pancreas Institute, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China.
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22
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Jia X, Liu XA, Shi Y, Yao S, Zhong X, Tian Y, Tian Q, Chen Z, Wang L. Profiling of key brain nuclei involved in CNS control of stress and glucose homeostasis. Biochem Biophys Res Commun 2020; 521:441-8. [PMID: 31672274 DOI: 10.1016/j.bbrc.2019.10.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 12/11/2022]
Abstract
Previous work have shown several key brain nuclei involved in acute psychological stress and glucose homeostasis. Acute stress influences glucose metabolism via released stress hormones by activating the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. Little is known about the brain nuclei which response to peripheral glucose alteration are either abundant with glucosesensing neurons or the activations are secondary to stress. Here we profile and compare the brain nuclei that response to stress and glucose homeostasis in mouse models of acute restraint stress, glucose and 2-DG injections respectively. Our present work provide a comprehensive depiction on key brain nuclei involved in CNS control of stress and glucose homeostasis, which gives clue for functional identification of brain nuclei that regulate glucose homeostasis under stress.
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Abstract
Most solid tumors are hypoxic in nature due to the limited supply of oxygen to internal tissues. Hypoxia plays an important role in metabolic adaptations of tumors that contribute significantly to cancer pathogenesis. Among the several metabolic alterations induced by hypoxia, hypoxia-mediated increased glucose uptake serves as the hallmark of metabolic reprogramming. Hypoxia-mediated stabilization of hypoxia-inducible factor-1 alpha (HIF-1α) transcription factor leads to altered expression of several glycolytic genes and glucose transporters, which results in increased glucose uptake by tumor cells. Here we describe an easy and simple way of measuring the hypoxia-mediated tumor glucose uptake in vivo. The method is based on fluorescent imaging probe, RediJect 2-DG, which is a nonradioactive fluorescent-tagged glucose molecule. We have discussed orthotopic tumor implantation of HIF-1α knockdown and control pancreatic cancer cells and glucose uptake measurement in vivo by using IVIS imaging system along with reagent preparations.
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Affiliation(s)
- Surendra K Shukla
- The Eppley Institute for Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Scott E Mulder
- The Eppley Institute for Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Pankaj K Singh
- The Eppley Institute for Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA.
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA.
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA.
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24
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Wang F, Zhang S, Vuckovic I, Jeon R, Lerman A, Folmes CD, Dzeja PP, Herrmann J. Glycolytic Stimulation Is Not a Requirement for M2 Macrophage Differentiation. Cell Metab 2018; 28:463-475.e4. [PMID: 30184486 PMCID: PMC6449248 DOI: 10.1016/j.cmet.2018.08.012] [Citation(s) in RCA: 201] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 06/20/2018] [Accepted: 08/10/2018] [Indexed: 12/20/2022]
Abstract
Enhanced glucose uptake and a switch to glycolysis are key traits of M1 macrophages, whereas enhanced fatty acid oxidation and oxidative phosphorylation are the main metabolic characteristics of M2 macrophages. Recent studies challenge this traditional view, indicating that glycolysis may also be critically important for M2 macrophage differentiation, based on experiments with 2-DG. Here we confirm the inhibitory effect of 2-DG on glycolysis, but also demonstrate that 2-DG impairs oxidative phosphorylation and significantly reduces 13C-labeled Krebs cycle metabolites and intracellular ATP levels. These metabolic derangements were associated with reduced JAK-STAT6 pathway activity and M2 differentiation marker expression. While glucose deprivation and glucose substitution with galactose effectively suppressed glycolytic activity, there was no effective suppression of oxidative phosphorylation, intracellular ATP levels, STAT6 phosphorylation, and M2 differentiation marker expression. These data indicate that glycolytic stimulation is not required for M2 macrophage differentiation as long as oxidative phosphorylation remains active.
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Affiliation(s)
- Feilong Wang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Song Zhang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA; Mayo Clinic Metabolomics Core, Mayo Clinic, Rochester, MN 55902, USA
| | - Ivan Vuckovic
- Mayo Clinic Metabolomics Core, Mayo Clinic, Rochester, MN 55902, USA
| | - Ryounghoon Jeon
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Amir Lerman
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Clifford D Folmes
- Department of Cardiovascular Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Petras P Dzeja
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA; Mayo Clinic Metabolomics Core, Mayo Clinic, Rochester, MN 55902, USA
| | - Joerg Herrmann
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA.
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25
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Shao B, Li CW, Lim SO, Sun L, Lai YJ, Hou J, Liu C, Chang CW, Qiu Y, Hsu JM, Chan LC, Zha Z, Li H, Hung MC. Deglycosylation of PD-L1 by 2-deoxyglucose reverses PARP inhibitor-induced immunosuppression in triple-negative breast cancer. Am J Cancer Res 2018; 8:1837-1846. [PMID: 30323975 PMCID: PMC6176188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 08/04/2018] [Indexed: 06/08/2023] Open
Abstract
Triple-negative breast cancer (TNBC), the most difficult-to-treat breast cancer subtype, lacks well-defined molecular targets. TNBC has increased programmed death-ligand 1 (PD-L1) expression, and its immunosuppressive nature makes it suitable for immune checkpoint blockade therapy. However, the response rate of TNBC to anti-PD-L1 or anti-programmed cell death protein 1 (PD-1) therapy remains unsatisfactory, as only 10-20% of TNBC patients have a partial response. Glycosylated PD-L1, the functional form of PD-L1, is required for PD-L1-PD-1 interaction. TNBC cells have significantly higher levels of glycosylated PD-L1 than non-TNBC cells do. In a screening of glucose analogs to block PD-L1 glycosylation, we found that 2-deoxyglucose (2-DG) can act as a glucose analog to decrease PD-L1 glycosylation. Because PARP inhibition upregulates PD-L1, 2-DG reduced PARP inhibition-mediated expression of glycosylated PD-L1. The combination of PARP inhibition and 2-DG had potent anti-tumor activity. Together, our results provide a strong rationale for investigating the targeting of PD-L1 glycosylation in TNBC further.
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Affiliation(s)
- Bin Shao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
- Key Laboratory of Carcinogenesis and Transformation Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital & InstituteBeijing 100142, P. R. China
| | - Chia-Wei Li
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Seung-Oe Lim
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue UniversityWest Lafayette, IN 47907, USA
| | - Linlin Sun
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Lung Cancer Institute, Tianjin Medical University General HospitalTianjin, P. R. China
| | - Yun-Ju Lai
- Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at HoustonHouston, TX, USA
| | - Junwei Hou
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Chunxiao Liu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Chiung-Wen Chang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Yufan Qiu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Jung-Mao Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Li-Chuan Chan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
- Graduate School of Biomedical Sciences, University of Texas Health Science CenterHouston, TX 77030, USA
| | - Zhengyu Zha
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Huiping Li
- Key Laboratory of Carcinogenesis and Transformation Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital & InstituteBeijing 100142, P. R. China
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
- Graduate School of Biomedical Sciences, University of Texas Health Science CenterHouston, TX 77030, USA
- Center for Molecular Medicine and Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung, Taiwan
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26
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Poyyakkara A, Raji GR, Kunhiraman H, Edatt L, Kumar SVB. ER stress mediated regulation of miR23a confer Hela cells better adaptability to utilize glycolytic pathway. J Cell Biochem 2018; 119:4907-4917. [PMID: 29377281 DOI: 10.1002/jcb.26718] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 01/24/2018] [Indexed: 02/04/2023]
Abstract
Cancer cells exhibit increased dependency on aerobic glycolysis, a phenomenon referred as the "Warburg effect" and therefore, blocking glycolysis by using non-metabolizable analogues of glucose, like 2-Deoxy glucose (2-DG), has been proposed to be of huge therapeutic importance. One of the major drawbacks of using 2-DG as a chemotherapeutic agent is that it can induce ER stress. ER stress is a hall mark in many solid tumors and the unfolded protein response (UPR) associated with it initiates many survival mechanisms in cancer cells. In the present study, we report a novel survival mechanism associated with ER stress, by which the cancer cells become more adapted to aerobic glycolysis. When ER stress was induced in Hela cells by treating them with 2-DG or Thapsigargin (TG) the expression and activity of LDH was significantly up regulated, conferring the cells a greater glycolytic potential. A simultaneous decrease was observed in the expression of miR-23a, which was predicted in silico to have target site on the 3'UTR of LDH A and B mRNAs. miRNA over expression studies and mRNA degradation assays suggest that miR-23a could target LDH A and LDH B mRNAs. Further on the basis of our results and previous scientific reports, we propose that "c-Myc," which is over expressed during ER stress, repress the expression of miR-23a, which in turn regulates the expression of its target genes viz., LDH A and LDH B, thereby making the cells more competent to survive in tumor microenvironment, which requires efficient use of aerobic glycolysis.
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Affiliation(s)
- Aswini Poyyakkara
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasargod, Kerala, India
| | - Grace R Raji
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasargod, Kerala, India
| | - Haritha Kunhiraman
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasargod, Kerala, India
| | - Lincy Edatt
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasargod, Kerala, India
| | - Sameer V B Kumar
- Department of Biochemistry and Molecular Biology, Central University of Kerala, Kasargod, Kerala, India
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Le Pogam P, Doué M, Le Page Y, Habauzit D, Zhadobov M, Sauleau R, Le Dréan Y, Rondeau D. Untargeted Metabolomics Reveal Lipid Alterations upon 2-Deoxyglucose Treatment in Human HaCaT Keratinocytes. J Proteome Res 2018; 17:1146-1157. [PMID: 29430917 DOI: 10.1021/acs.jproteome.7b00805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The glucose analogue 2-deoxyglucose (2-DG) impedes cancer progression in animal models and is currently being assessed as an anticancer therapy, yet the mode of action of this drug of high clinical significance has not been fully delineated. In an attempt to better characterize its pharmacodynamics, an integrative UPLC-Q-Exactive-based joint metabolomic and lipidomic approach was undertaken to evaluate the metabolic perturbations induced by this drug in human HaCaT keratinocyte cells. R-XCMS data processing and subsequent multivariate pattern recognition, metabolites identification, and pathway analyses identified eight metabolites that were most significantly changed upon a 3 h 2-DG exposure. Most of these dysregulated features were emphasized in the course of lipidomic profiling and could be identified as ceramide and glucosylceramide derivatives, consistently with their involvement in cell death programming. Even though metabolomic analyses did not generally afford such clear-cut dysregulations, some alterations in phosphatidylcholine and phosphatidylethanolamine derivatives could be highlighted as well. Overall, these results support the adequacy of the proposed analytical workflow and might contribute to a better understanding of the mechanisms underlying the promising effects of 2-DG.
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Affiliation(s)
- Pierre Le Pogam
- Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, University of Rennes , Campus de Beaulieu, 263 avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Mickael Doué
- Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, University of Rennes , Campus de Beaulieu, 263 avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Yann Le Page
- Transcription, Environment and Cancer Group, Institute for Research on Environmental and Occupational Health (IRSET), Inserm UMR1085, University of Rennes 1 , 9 avenue du Prof. Léon Bernard, 35043 Rennes Cedex, France
| | - Denis Habauzit
- Transcription, Environment and Cancer Group, Institute for Research on Environmental and Occupational Health (IRSET), Inserm UMR1085, University of Rennes 1 , 9 avenue du Prof. Léon Bernard, 35043 Rennes Cedex, France
| | - Maxim Zhadobov
- Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, University of Rennes , Campus de Beaulieu, 263 avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Ronan Sauleau
- Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, University of Rennes , Campus de Beaulieu, 263 avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Yves Le Dréan
- Transcription, Environment and Cancer Group, Institute for Research on Environmental and Occupational Health (IRSET), Inserm UMR1085, University of Rennes 1 , 9 avenue du Prof. Léon Bernard, 35043 Rennes Cedex, France
| | - David Rondeau
- Institute of Electronics and Telecommunications of Rennes (IETR), UMR CNRS 6164, University of Rennes , Campus de Beaulieu, 263 avenue du Général Leclerc, 35042 Rennes Cedex, France.,Département de Chimie, Université de Bretagne Occidentale , 6 avenue Victor Le Gorgeu, 29238 Brest Cedex, France
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Wilsterman K, Pepper A, Bentley GE. Low glucose availability stimulates progesterone production by mouse ovaries in vitro. ACTA ACUST UNITED AC 2017; 220:4583-4588. [PMID: 29097592 DOI: 10.1242/jeb.164384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/28/2017] [Indexed: 01/11/2023]
Abstract
Steroid production by the ovary is primarily stimulated by gonadotropins but can also be affected by biological cues that provide information about energy status and environmental stress. To further understand which metabolic cues the ovary can respond to, we exposed gonadotropin-stimulated mouse ovaries in vitro to glucose metabolism inhibitors and measured steroid accumulation in media. Gonadotropin-stimulated ovaries exposed to 2-deoxy-d-glucose increased progesterone production and steroidogenic acute regulatory protein mRNA levels. However, oocytes and granulosa cells in antral follicles do not independently mediate this response because targeted treatment of these cell types with a different inhibitor of glucose metabolism (bromopyruvic acid) did not affect progesterone production. Elevated progesterone production is consistent with the homeostatic role of progesterone in glucose regulation in mammals. It also may regulate follicle growth and/or atresia within the ovary. These results suggest that ovaries can regulate glucose homeostasis in addition to their primary role in reproductive activity.
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Affiliation(s)
- Kathryn Wilsterman
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - Aimee Pepper
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
| | - George E Bentley
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA.,Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA
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Zhang Y, Li X, Tan S, Liu X, Zhao X, Yuan Z, Nie C. Mcl-1 expression and JNK activation induces a threshold for apoptosis in Bcl-xL-overexpressing hematopoietic cells. Oncotarget 2017; 8:11042-52. [PMID: 28038464 DOI: 10.18632/oncotarget.14223] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 12/20/2016] [Indexed: 02/05/2023] Open
Abstract
The regulation of Mcl-1 expression is necessary for the induction of cancer cell apoptosis by ABTs such as ABT-737, ABT-263 and ABT-199. However, the reduction in Mcl-1 expression is not sufficient for initiating cell death in hematopoietic cancer cells with high Bcl-xL expression. Here, we demonstrate that 2-deoxyglucose (2-DG) enhanced the effect of ABT-199 to induce cell apoptosis in hematologic malignancies with up-regulated Bcl-xL expression. Our study revealed that 2-DG could decrease glucose-dependent and Akt-independent Mcl-1 expression, which is mediated by the mechanistic target of rapamycin complex 1 (mTORC1) pathway. Moreover, the combination of 2-DG and ABT-199 triggered c-Jun NH2-terminal kinase (JNK) phosphorylation and subsequent Bcl-xL degradation, whereas 2-DG and ABT-199 alone had little effect on JNK activation. Therefore, the combination of 2-DG and ABT-199 initiated cell death through the reduction of Mcl-1 expression and JNK activation. Our study could provide a clinical theoretical basis for the use of ABT-199 in hematologic malignancies with excessive Bcl-xL expression.
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Yi Y, Chen D, Ao J, Sun S, Wu M, Li X, Bergholz J, Zhang Y, Xiao ZX. Metformin Promotes AMP-activated Protein Kinase-independent Suppression of ΔNp63α Protein Expression and Inhibits Cancer Cell Viability. J Biol Chem 2017; 292:5253-5261. [PMID: 28193839 DOI: 10.1074/jbc.m116.769141] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/10/2017] [Indexed: 12/25/2022] Open
Abstract
The blood glucose modifier metformin is used to treat type II diabetes and has also been shown to possess anticancer activities. Recent studies indicate that glucose deprivation can greatly enhance metformin-mediated inhibition of cell viability, but the molecular mechanism involved in this inhibition is unclear. In this study, we report that, under glucose deprivation, metformin inhibited expression of ΔNp63α, a p53 family member involved in cell adhesion pathways, resulting in disruption of cell matrix adhesion and subsequent apoptosis in human squamous carcinoma cells. We further show that metformin promoted ΔNp63α protein instability independent of AMP-activated protein kinase and that WWP1, an E3 ligase of ΔNp63α, was involved in metformin-mediated down-regulation of ΔNp63α levels. In addition, we demonstrate that a combination of metformin and the glycolysis inhibitor 2-deoxy-d-glucose significantly inhibited ΔNp63α expression and also suppressed xenographic tumor growth in vivo In summary, this study reveals a new mechanism for metformin-mediated anticancer activity and suggests a new strategy for treating human squamous cell carcinoma.
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Affiliation(s)
- Yong Yi
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Deshi Chen
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Juan Ao
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Shengnan Sun
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Min Wu
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Xiaorong Li
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Johann Bergholz
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Yujun Zhang
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
| | - Zhi-Xiong Xiao
- From the Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
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Wang H, Wang L, Zhang Y, Wang J, Deng Y, Lin D. Inhibition of glycolytic enzyme hexokinase II (HK2) suppresses lung tumor growth. Cancer Cell Int 2016; 16:9. [PMID: 26884725 PMCID: PMC4755025 DOI: 10.1186/s12935-016-0280-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 02/03/2016] [Indexed: 12/12/2022] Open
Abstract
Background The most common genetic changes identified in human NSCLC are Kras mutations (10–30 %) and p53 mutation or loss (50–70 %). Moreover, NSCLC with mutations in Kras and p53 poorly respond to current therapies, so we are trying to find a new target for the treatment strategies. Methods Flow cytometry, crystal violet staining and immunoblotting were used to assess cell cycle arrest, proliferation and apoptosis in lung cancer cell lines after 2-DG treatment and lentivirus infection by shRNA knock down. IHC and western blotting were carried for NSG xenograft model with 2-DG treatment and lentivirus infection by shRNA knock down. Results Knocking down Kras down-regulated the glycolytic enzyme hexokinase II (HK2) in KP2 (mouse lung cancer cell line with Kras mutation and p53 deletion) and H23 (human lung cancer cell line with Kras mutation and p53 mutation) cell lines. Genetic studies revealed that HK2 was required for the human and mouse lung cancer cell growth in vitro and in vivo. Our pharmacological studies confirmed that 2-DG, an inhibitor of HK2, inhibited human and mouse lung cancer cell growth through inducing cell apoptosis and autophagy. Conclusions HK2 is a promising treatment target for NSCLC with Kras activating and p53 function loss.
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Affiliation(s)
- Huanan Wang
- The Clinical Department, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China ; Laboratory of Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN 55912 USA
| | - Lei Wang
- Laboratory of Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN 55912 USA
| | - Yingjie Zhang
- Laboratory of Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN 55912 USA
| | - Ji Wang
- Laboratory of Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN 55912 USA
| | - Yibin Deng
- Laboratory of Cancer Genetics, The University of Minnesota Hormel Institute, Austin, MN 55912 USA
| | - Degui Lin
- The Clinical Department, College of Veterinary Medicine, China Agricultural University, Beijing, 100193 China
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Stathem M, Marimuthu S, O'Neal J, Rathmell JC, Chesney JA, Beverly LJ, Siskind LJ. Glucose availability and glycolytic metabolism dictate glycosphingolipid levels. J Cell Biochem 2016; 116:67-80. [PMID: 25145677 DOI: 10.1002/jcb.24943] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 08/15/2014] [Indexed: 12/19/2022]
Abstract
Cancer therapeutics has seen an emergence and re-emergence of two metabolic fields in recent years, those of bioactive sphingolipids and glycolytic metabolism. Anaerobic glycolysis and its implications in cancer have been at the forefront of cancer research for over 90 years. More recently, the role of sphingolipids in cancer cell metabolism has gained recognition, notably ceramide's essential role in programmed cell death and the role of the glucosylceramide synthase (GCS) in chemotherapeutic resistance. Despite this knowledge, a direct link between these two fields has yet to be definitively drawn. Herein, we show that in a model of highly glycolytic cells, generation of the glycosphingolipid (GSL) glucosylceramide (GlcCer) by GCS was elevated in response to increased glucose availability, while glucose deprivation diminished GSL levels. This effect was likely substrate dependent, independent of both GCS levels and activity. Conversely, leukemia cells with elevated GSLs showed a significant change in GCS activity, but no change in glucose uptake or GCS expression. In a leukemia cell line with elevated GlcCer, treatment with inhibitors of glycolysis or the pentose phosphate pathway (PPP) significantly decreased GlcCer levels. When combined with pre-clinical inhibitor ABT-263, this effect was augmented and production of pro-apoptotic sphingolipid ceramide increased. Taken together, we have shown that there exists a definitive link between glucose metabolism and GSL production, laying the groundwork for connecting two distinct yet essential metabolic fields in cancer research. Furthermore, we have proposed a novel combination therapeutic option targeting two metabolic vulnerabilities for the treatment of leukemia.
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Affiliation(s)
- Morgan Stathem
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky
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Chatterjee S, Thaker N, De A. Combined 2-deoxy glucose and metformin improves therapeutic efficacy of sodium-iodide symporter-mediated targeted radioiodine therapy in breast cancer cells. Breast Cancer (Dove Med Press) 2015; 7:251-65. [PMID: 26355636 PMCID: PMC4560438 DOI: 10.2147/bctt.s84648] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Radiosensitization using either metformin or 2-deoxy-d-glucose (2-DG) in various cancer cells has been reported. The present study reveals novel information on combining these drugs to enhance radiosensitization effect in breast cancer (BC) cells. Responses to low-dose Cobalt60 radiation, as well as a newly emerged radioiodine therapy target for BC, that is, sodium-iodide symporter (NIS or SLC5A5) protein, are tested. As therapeutic potential of NIS in BC is often limited due to low uptake and fast efflux rate of iodine, the scope of these two radiosensitizers to further improve NIS-mediated 131I therapeutic efficacy is explored. Two BC cell lines, MCF-7, and MDA MB231 are tested to optimize minimal drug doses required for radiosensitization. A combination of 2 mM metformin and 20 mM 2-DG with 2 grey (Gy) Cobalt60 radiation shows significant radiosensitization effect (P=0.0002). In cells treated with the combination therapy, increased γH2A.X foci formation was noted. Further, MCF-7 BC cells overexpressing NIS (MCF-7 NIS) was established, and using the optimized drug concentrations, significant radiosensitization (P=0.0019) by 50 μ Ci 131I usage was found to be the case as well. Apoptosis data corroborates with the result of clonogenic assay showing significant increase in apoptotic population upon dual drug-mediated radiosensitization. In case of metformin treatment, lowered adenosine triphosphate (ATP) content of the cell has been observed. The encouraging radiosensitization effect observed using combined 2-DG and metformin may aid in reducing Cobalt60 radiation exposure or for targeted radioiodine therapy in BC cells with NIS expression. This study indicates high potential of this drug combination in sensitizing BC cells for NIS-mediated-targeted radioiodine therapy, which otherwise may have lacked efficacy.
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Affiliation(s)
- Sushmita Chatterjee
- Molecular Functional Imaging Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, India
| | - Nirmal Thaker
- Molecular Functional Imaging Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, India
| | - Abhijit De
- Molecular Functional Imaging Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Kharghar, Navi Mumbai, India
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Cheng G, Zielonka J, McAllister D, Hardy M, Ouari O, Joseph J, Dwinell MB, Kalyanaraman B. Antiproliferative effects of mitochondria-targeted cationic antioxidants and analogs: Role of mitochondrial bioenergetics and energy-sensing mechanism. Cancer Lett 2015; 365:96-106. [PMID: 26004344 DOI: 10.1016/j.canlet.2015.05.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 05/08/2015] [Accepted: 05/12/2015] [Indexed: 12/21/2022]
Abstract
One of the proposed mechanisms for tumor proliferation involves redox signaling mediated by reactive oxygen species such as superoxide and hydrogen peroxide generated at moderate levels. Thus, the antiproliferative and anti-tumor effects of certain antioxidants were attributed to their ability to mitigate intracellular reactive oxygen species (ROS). Recent reports support a role for mitochondrial ROS in stimulating tumor cell proliferation. In this study, we compared the antiproliferative effects and the effects on mitochondrial bioenergetic functions of a mitochondria-targeted cationic carboxyproxyl nitroxide (Mito-CP), exhibiting superoxide dismutase (SOD)-like activity and a synthetic cationic acetamide analog (Mito-CP-Ac) lacking the nitroxide moiety responsible for the SOD activity. Results indicate that both Mito-CP and Mito-CP-Ac potently inhibited tumor cell proliferation. Both compounds altered mitochondrial and glycolytic functions, and intracellular citrate levels. Both Mito-CP and Mito-CP-Ac synergized with 2-deoxy-glucose (2-DG) to deplete intracellular ATP, inhibit cell proliferation and induce apoptosis in pancreatic cancer cells. We conclude that mitochondria-targeted cationic agents inhibit tumor proliferation via modification of mitochondrial bioenergetics pathways rather than by dismutating and detoxifying mitochondrial superoxide.
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Affiliation(s)
- Gang Cheng
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Jacek Zielonka
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Donna McAllister
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Micael Hardy
- Aix-Marseille Université, CNRS, ICR UMR 7273, 13397 Marseille, France
| | - Olivier Ouari
- Aix-Marseille Université, CNRS, ICR UMR 7273, 13397 Marseille, France
| | - Joy Joseph
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Michael B Dwinell
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Balaraman Kalyanaraman
- Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.
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Abstract
Sarcomas represent a diverse group of malignancies with distinct molecular and pathological features. A better understanding of the alterations associated with specific sarcoma subtypes is critically important to improve sarcoma treatment. Renewed interest in the metabolic properties of cancer cells has led to an exploration of targeting metabolic dependencies as a therapeutic strategy. In this study, we have characterized key bioenergetic properties of human sarcoma cells in order to identify metabolic vulnerabilities between sarcoma subtypes. We have also investigated the effects of compounds that inhibit glycolysis or mitochondrial respiration, either alone or in combination, and examined relationships between bioenergetic parameters and sensitivity to metabolic inhibitors. Using 2-deoxy-D-glucose (2-DG), a competitive inhibitor of glycolysis, oligomycin, an inhibitor of mitochondrial ATP synthase, and metformin, a widely used anti-diabetes drug and inhibitor of complex I of the mitochondrial respiratory chain, we evaluated the effects of metabolic inhibition on sarcoma cell growth and bioenergetic function. Inhibition of glycolysis by 2-DG effectively reduced the viability of alveolar rhabdomyosarcoma cells vs. embryonal rhabdomyosarcoma, osteosarcoma, and normal cells. Interestingly, inhibitors of mitochondrial respiration did not significantly affect viability, but were able to increase sensitivity of sarcomas to inhibition of glycolysis. Additionally, inhibition of glycolysis significantly reduced intracellular ATP levels, and sensitivity to 2-DG-induced growth inhibition was related to respiratory rates and glycolytic dependency. Our findings demonstrate novel relationships between sarcoma bioenergetics and sensitivity to metabolic inhibitors, and suggest that inhibition of metabolic pathways in sarcomas should be further investigated as a potential therapeutic strategy.
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Affiliation(s)
- Sameer H Issaq
- Molecular Pharmacology Branch; Leidos Biomedical Research, Inc.; Frederick National Laboratory for Cancer Research; Frederick, MD USA
| | - Beverly A Teicher
- Division of Cancer Treatment and Diagnosis; National Cancer Institute; Rockville, MD USA
| | - Anne Monks
- Molecular Pharmacology Branch; Leidos Biomedical Research, Inc.; Frederick National Laboratory for Cancer Research; Frederick, MD USA
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Ngamsiri P, Watcharasit P, Satayavivad J. Glycogen synthase kinase-3 (GSK3) controls deoxyglucose-induced mitochondrial biogenesis in human neuroblastoma SH-SY5Y cells. Mitochondrion 2014; 14:54-63. [PMID: 24316184 DOI: 10.1016/j.mito.2013.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 10/27/2013] [Accepted: 11/25/2013] [Indexed: 11/21/2022]
Abstract
Mitochondrial biogenesis, a mitochondrial growth and division process, is crucial for adaptation to metabolic stress. The present study demonstrated that treatment with a specific inhibitor of GSK3, SB216763, attenuated induction of mitochondrial biogenesis by a glycolysis inhibitor, 2-deoxyglucose (2-DG), without affecting this biogenesis at basal condition. Additionally, overexpression of WT-GSK3β promoted whereas GSK3β-KD attenuated 2-DG-induced mitochondrial protein expression. The mitochondrial biogenesis attenuation by GSK3 inhibitor was not due to inhibition of protein degradation. Furthermore, GSK3 inhibition further reduced transcription of mitochondrial (COXII), but not nuclear (VDAC) gene by 2-DG suggesting its participation in 2-DG-induced mitochondrial transcription. Together, our results show that GSK3 regulates mitochondrial biogenesis induced by glycolysis inhibition.
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Benavides GA, Liang Q, Dodson M, Darley-Usmar V, Zhang J. Inhibition of autophagy and glycolysis by nitric oxide during hypoxia-reoxygenation impairs cellular bioenergetics and promotes cell death in primary neurons. Free Radic Biol Med 2013; 65:1215-1228. [PMID: 24056030 PMCID: PMC3859859 DOI: 10.1016/j.freeradbiomed.2013.09.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/28/2013] [Accepted: 09/11/2013] [Indexed: 12/12/2022]
Abstract
Excessive nitric oxide (NO) production is known to damage mitochondrial proteins and the autophagy repair pathway and so can potentially contribute to neurotoxicity. Accordingly, we hypothesized that protection against protein damage from reactive oxygen and nitrogen species under conditions of low oxygen by the autophagy pathway in neurons would be impaired by NO and enhance bioenergetic dysfunction. Rat primary cortical neurons had the same basal cellular respiration in hypoxia as in normoxia, whereas NO-exposed cells exhibited a gradual decrease in mitochondrial respiration in hypoxia. Upon reoxygenation, the respiration in NO-treated cells did not recover to prehypoxic levels. Hypoxia-reoxygenation in the presence of NO was associated with inhibition of autophagy, and the inability to recover during reoxygenation was exacerbated by an inhibitor of autophagy, 3-methyladenine. The effects of hypoxia could be recapitulated by inhibiting glycolytic flux under normoxic conditions. Under both normoxic and hypoxic conditions NO exposure induced immediate stimulation of glycolysis, but prolonged NO exposure, associated with irreversible inhibition of mitochondrial respiration in hypoxia, inhibited glycolysis. Importantly, we found that NO inhibited basal respiration under normoxic conditions only when glucose was absent from the medium or glycolysis was inhibited by 2-deoxy-d-glucose, revealing a novel NO-dependent mechanism for the inhibition of mitochondrial respiration that is modulated by glycolysis. Taken together these data suggest an oxygen-dependent interaction between mitochondrial respiration, glycolysis, and autophagy in protecting neuronal cells exposed to NO. Importantly, they indicate that mitochondrial dysfunction is intimately linked to a failure of glycolytic flux induced by exposure to NO. In addition, these studies provide new insights into the understanding of how autophagy and NO may play interactive roles in neuroinflammation-induced cellular damage, which is pertinent to our understanding of the pathology of neurodegenerative diseases in which excessive NO is generated.
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Affiliation(s)
- Gloria A Benavides
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA
| | - Qiuli Liang
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA
| | - Matthew Dodson
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA
| | - Victor Darley-Usmar
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA
| | - Jianhua Zhang
- Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0017, USA; Department of Veterans Affairs, Birmingham VA Medical Center, Birmingham, AL 35233, USA.
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Zhao F, Severson P, Pacheco S, Futscher BW, Klimecki WT. Arsenic exposure induces the Warburg effect in cultured human cells. Toxicol Appl Pharmacol 2013; 271:72-7. [PMID: 23648393 DOI: 10.1016/j.taap.2013.04.020] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 01/09/2023]
Abstract
Understanding how arsenic exacts its diverse, global disease burden is hampered by a limited understanding of the particular biological pathways that are disrupted by arsenic and underlie pathogenesis. A reductionist view would predict that a small number of basic pathways are generally perturbed by arsenic, and manifest as diverse diseases. Following an initial observation that arsenite-exposed cells in culture acidify their media more rapidly than control cells, the report here shows that low level exposure to arsenite (75ppb) is sufficient to induce aerobic glycolysis (the Warburg effect) as a generalized phenomenon in cultured human primary cells and cell lines. Expanded studies in one such cell line, the non-malignant pulmonary epithelial line, BEAS-2B, established that the arsenite-induced Warburg effect was associated with increased accumulation of intracellular and extracellular lactate, an increased rate of extracellular acidification, and inhibition by the non-metabolized glucose analog, 2-deoxy-D-glucose. Associated with the induction of aerobic glycolysis was a pathway-wide induction of glycolysis gene expression, as well as protein accumulation of an established glycolysis master-regulator, hypoxia-inducible factor 1A. Arsenite-induced alteration of energy production in human cells represents the type of fundamental perturbation that could extend to many tissue targets and diseases.
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Affiliation(s)
- Fei Zhao
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ 85724, USA
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Piña Y, Houston SK, Murray TG, Koru-Sengul T, Decatur C, Scott WK, Nathanson L, Clarke J, Lampidis TJ. Retinoblastoma treatment: impact of the glycolytic inhibitor 2-deoxy-d-glucose on molecular genomics expression in LH(BETA)T(AG) retinal tumors. Clin Ophthalmol 2012; 6:817-30. [PMID: 22701083 PMCID: PMC3373226 DOI: 10.2147/opth.s29688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the effect of 2-deoxy-D-glucose (2-DG) on the spatial distribution of the genetic expression of key elements involved in angiogenesis, hypoxia, cellular metabolism, and apoptosis in LH(BETA)T(AG) retinal tumors. METHODS The right eye of each LH(BETA)T(AG) transgenic mouse (n = 24) was treated with either two or six subconjunctival injections of 2-DG (500 mg/kg) or saline control at 16 weeks of age. A gene expression array analysis was performed on five different intratumoral regions (apex, center, base, anterior-lateral, and posterior-lateral) using Affymetrix GeneChip Mouse Gene 1.0 ST arrays. To test for treatment effects of each probe within each region, a two-way analysis of variance was used. RESULTS Significant differences between treatment groups (ie, 0, 2, and 6 injections) were found as well as differences among the five retinal tumor regions evaluated (P < 0.01). More than 100 genes were observed to be dysregulated by ≥2-fold difference in expression between the three treatment groups, and their dysregulation varied across the five regions assayed. Several genes involved in pathways important for tumor cell growth (ie, angiogenesis, hypoxia, cellular metabolism, and apoptosis) were identified. CONCLUSIONS 2-DG was found to significantly alter the gene expression in LH(BETA)T(AG) retinal tumor cells according to their location within the tumor as well as the treatment schedule. 2-DG's effects on genetic expression found here correlate with previous reported results on varied processes involved in its in vitro and in vivo activity in inhibiting tumor cell growth.
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Affiliation(s)
- Yolanda Piña
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
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