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Shapourian H, Ghanadian M, Eskandari N, Shokouhi A, Demirel GY, Bazhin AV, Ganjalikhani-Hakemi M. TIM-3/Galectin-9 interaction and glutamine metabolism in AML cell lines, HL-60 and THP-1. BMC Cancer 2024; 24:125. [PMID: 38267906 PMCID: PMC10809689 DOI: 10.1186/s12885-024-11898-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/19/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND T cell immunoglobulin and mucin-domain containing-3 (TIM-3) is a cell surface molecule that was first discovered on T cells. However, recent studies revealed that it is also highly expressed in acute myeloid leukemia (AML) cells and it is related to AML progression. As, Glutamine appears to play a prominent role in malignant tumor progression, especially in their myeloid group, therefore, in this study we aimed to evaluate the relation between TIM-3/Galectin-9 axis and glutamine metabolism in two types of AML cell lines, HL-60 and THP-1. METHODS Cell lines were cultured in RPMI 1640 which supplemented with 10% FBS and 1% antibiotics. 24, 48, and 72 h after addition of recombinant Galectin-9 (Gal-9), RT-qPCR analysis, RP-HPLC and gas chromatography techniques were performed to evaluate the expression of glutaminase (GLS), glutamate dehydrogenase (GDH) enzymes, concentration of metabolites; Glutamate (Glu) and alpha-ketoglutarate (α-KG) in glutaminolysis pathway, respectively. Western blotting and MTT assay were used to detect expression of mammalian target of rapamycin complex (mTORC) as signaling factor, GLS protein and cell proliferation rate, respectively. RESULTS The most mRNA expression of GLS and GDH in HL-60 cells was seen at 72 h after Gal-9 treatment (p = 0.001, p = 0.0001) and in THP-1 cell line was observed at 24 h after Gal-9 addition (p = 0.001, p = 0.0001). The most mTORC and GLS protein expression in HL-60 and THP-1 cells was observed at 72 and 24 h after Gal-9 treatment (p = 0.0001), respectively. MTT assay revealed that Gal-9 could promote cell proliferation rate in both cell lines (p = 0.001). Glu concentration in HL-60 and α-KG concentration in both HL-60 (p = 0.03) and THP-1 (p = 0.0001) cell lines had a decreasing trend. But, Glu concentration had an increasing trend in THP-1 cell line (p = 0.0001). CONCLUSION Taken together, this study suggests TIM-3/Gal-9 interaction could promote glutamine metabolism in HL-60 and THP-1 cells and resulting in AML development.
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Affiliation(s)
- Hooriyeh Shapourian
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nahid Eskandari
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abolfazl Shokouhi
- Department of Endocrine and metabolism research center, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Alexandr V Bazhin
- Department of General, Visceral and Transplant Surgery, Ludwig Maximilians University of Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Mazdak Ganjalikhani-Hakemi
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
- Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey.
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Wang X, Lin J, Li Z, Wang M. In what area of biology has a "new" type of cell death been discovered? Biochim Biophys Acta Rev Cancer 2023; 1878:188955. [PMID: 37451411 DOI: 10.1016/j.bbcan.2023.188955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Cell death is a fundamental physiological process that occurs in all organisms and is crucial to each organism's evolution, ability to maintain a stable internal environment, and the development of multiple organ systems. Disulfidptosis is a new mode of cell death that is triggered when cells with high expression of solute carrier family 7 member 11 (SLC7A11) are exposed to glucose starvation to initiate the process of cell death. The disulfidptosis mechanism is a programmed cell death mode that triggers cell death through reduction-oxidation (REDOX) reactions and disulfur bond formation. In disulfidptosis, disulfur bonds play a crucial role and cause the protein in the cell to undergo conformational changes, eventually leading to cell death. This mode of cell death has unique characteristics and regulatory mechanisms in comparison with other modes of cell death. In recent years, an increasing number of studies have shown that the disulfidptosis mechanism plays a key role in the occurrence and development of a variety of diseases. For example, cancer, cardiovascular diseases, neurodegenerative diseases, and liver diseases are all closely related to cell disulfidptosis mechanisms. Therefore, it is of paramount clinical significance to conduct in-depth research regarding this mechanism. This review summarizes the research progress on the disulfidptosis mechanism, including its discovery history, regulatory mechanism, related proteins, and signaling pathways. Potential applications of the disulfidptosis mechanism in disease therapy and future research directions are also discussed. This mechanism represents another subversive discovery after ferroptosis, and provides both a fresh perspective and an innovative strategy for the treatment of cancer, as well as inspiration for the treatment of other diseases.
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Affiliation(s)
- Xixi Wang
- Department of General Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Junyi Lin
- Department of Cardiovascular Medicine, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Zhi Li
- Interventional Cancer Institute of Chinese Integrative Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
| | - Minghua Wang
- Department of General Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China.
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3
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Li Q, Zhang J, Guan X, Lu Y, Liu Y, Liu J, Xu N, Cai C, Nan B, Li X, Liu J, Wang Y. Metabolite analysis of soybean oil on promoting astaxanthin production of Phaffia rhodozyma. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2997-3005. [PMID: 36448538 DOI: 10.1002/jsfa.12365] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/24/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Astaxanthin is a carotenoid with strong antioxidant property. In addition, it has anti-cancer, anti-tumor, anti-inflammatory and many other functions. The micro-organisms that mainly produce astaxanthin are Haematococcus pluvialis and Phaffia rhodozyma. Compared with H. pluvialis, P. rhodozyma has shorter fermentation cycle and easier to control culture conditions, but the yield of astaxanthin in P. rhodozyma is low. This article studied how to improve the astaxanthin production of P. rhodozyma. RESULTS The results showed that when 10 mL L-1 soybean oil was added to the culture medium, astaxanthin production increased significantly, reaching 7.35 mg L-1 , which was 1.4 times that of the control group, and lycopene and β-carotene contents also increased significantly. Through targeted metabolite analysis, the fatty acids in P. rhodozyma significantly increased under the soybean oil stimulation, especially the fatty acids closely related to the formation of astaxanthin esters, included palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1n9), linoleic acid (C18:2n6), α-linolenic acid (C18:3n3) and γ-linolenic acid (C18:3n6), thereby increasing the astaxanthin esters content. CONCLUSION It showed that the addition of soybean oil can promote the accumulation of astaxanthin by promoting the increase of astaxanthin ester content. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Qingru Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Jing Zhang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xiaoyu Guan
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Yanhong Lu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Yankai Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Jiahuan Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Na Xu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Chunyu Cai
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Bo Nan
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xia Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Jingsheng Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China
| | - Yuhua Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
- Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China
- National Processing Laboratory for Soybean Industry and Technology, Changchun, China
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Patel JH, Ong DJ, Williams CR, Callies LK, Wills AE. Elevated pentose phosphate pathway flux supports appendage regeneration. Cell Rep 2022; 41:111552. [PMID: 36288713 PMCID: PMC10569227 DOI: 10.1016/j.celrep.2022.111552] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/01/2022] [Accepted: 10/03/2022] [Indexed: 11/18/2022] Open
Abstract
A fundamental step in regeneration is rapid growth to replace lost tissue. Cells must generate sufficient lipids, nucleotides, and proteins to fuel rapid cell division. To define metabolic pathways underlying regenerative growth, we undertake a multimodal investigation of metabolic reprogramming in Xenopus tropicalis appendage regeneration. Regenerating tissues have increased glucose uptake; however, inhibition of glycolysis does not decrease regeneration. Instead, glucose is funneled to the pentose phosphate pathway (PPP), which is essential for full tail regeneration. Liquid chromatography-mass spectrometry (LC-MS) metabolite profiling reveals increased nucleotide and nicotinamide intermediates required for cell division. Using single-cell RNA sequencing (scRNA-seq), we find that highly proliferative cells have increased transcription of PPP enzymes and not glycolytic enzymes. Further, PPP inhibition results in decreased cell division specifically in regenerating tissue. Our results inform a model wherein regenerating tissues direct glucose toward the PPP, yielding nucleotide precursors to drive regenerative cell proliferation.
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Affiliation(s)
- Jeet H Patel
- Department of Biochemistry, University of Washington, Seattle, WA, USA; Program in Molecular and Cellular Biology, University of Washington School of Medicine, Seattle, WA, USA
| | - Daniel J Ong
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Claire R Williams
- Department of Biochemistry, University of Washington, Seattle, WA, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - LuLu K Callies
- Program in Molecular and Cellular Biology, University of Washington School of Medicine, Seattle, WA, USA
| | - Andrea E Wills
- Department of Biochemistry, University of Washington, Seattle, WA, USA; Program in Molecular and Cellular Biology, University of Washington School of Medicine, Seattle, WA, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA.
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Repas J, Zügner E, Gole B, Bizjak M, Potočnik U, Magnes C, Pavlin M. Metabolic profiling of attached and detached metformin and 2-deoxy-D-glucose treated breast cancer cells reveals adaptive changes in metabolome of detached cells. Sci Rep 2021; 11:21354. [PMID: 34725457 PMCID: PMC8560930 DOI: 10.1038/s41598-021-98642-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 09/06/2021] [Indexed: 02/05/2023] Open
Abstract
Anchorage-independent growth of cancer cells in vitro is correlated to metastasis formation in vivo. Metformin use is associated with decreased breast cancer incidence and currently evaluated in cancer clinical trials. The combined treatment with metformin and 2-deoxy-D-glucose (2DG) in vitro induces detachment of viable MDA-MB-231 breast cancer cells that retain their proliferation capacity. This might be important for cell detachment from primary tumors, but the metabolic changes involved are unknown. We performed LC/MS metabolic profiling on separated attached and detached MDA-MB-231 cells treated with metformin and/or 2DG. High 2DG and metformin plus 2DG altered the metabolic profile similarly to metformin, inferring that metabolic changes are necessary but not sufficient while the specific effects of 2DG are crucial for detachment. Detached cells had higher NADPH levels and lower fatty acids and glutamine levels compared to attached cells, supporting the role of AMPK activation and reductive carboxylation in supporting anchorage-independent survival. Surprisingly, the metabolic profile of detached cells was closer to untreated control cells than attached treated cells, suggesting detachment might help cells adapt to energy stress. Metformin treated cells had higher fatty and amino acid levels with lower purine nucleotide levels, which is relevant for understanding the anticancer mechanisms of metformin.
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Affiliation(s)
- Jernej Repas
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Elmar Zügner
- Joanneum Research Health - Institute for Biomedicine and Health Sciences, Graz, Austria
| | - Boris Gole
- Center for Human Molecular Genetics and Pharmacogenomics, Medical Faculty, University of Maribor, Maribor, Slovenia
| | - Maruša Bizjak
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- Group for Nano- and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
- Pharmacy Institute, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Uroš Potočnik
- Center for Human Molecular Genetics and Pharmacogenomics, Medical Faculty, University of Maribor, Maribor, Slovenia
- Laboratory for Biochemistry, Molecular biology and Genomics, Faculty for Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia
| | - Christoph Magnes
- Joanneum Research Health - Institute for Biomedicine and Health Sciences, Graz, Austria.
| | - Mojca Pavlin
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
- Group for Nano- and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia.
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6
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Yang L, Liu X, Yin B, Deng X, Lin X, Song J, Wu S. High-Throughput and Real-Time Monitoring of Single-Cell Extracellular pH Based on Polyaniline Microarrays. Anal Chem 2021; 93:13852-13860. [PMID: 34612621 DOI: 10.1021/acs.analchem.1c02560] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Real-time monitoring of extracellular pH (pHe) at the single-cell level is critical for elucidating the mechanisms of disease development and investigating drug effects, with particular importance in cancer cells. However, there are still some challenges for analyzing and measuring pHe due to the strong heterogeneity of cancer cells. Thus, it is necessary to develop a reliable method with good selectivity, reproducibility, and stability for achieving the pHe heterogeneity of cancer cells. In this paper, we report a high-throughput, real-time measuring technique based on polyaniline (PANI) microelectrode arrays for monitoring single-cell pHe. The PANI microelectrode array not only has a high sensitivity (57.22 mV/pH) ranging from pH 6.0 to 7.6 but also exhibits a high reliability (after washing, the PANI film was still smooth, dense, and with a sensitivity of 55.9 mV/pH). Our results demonstrated that the pHe of the cancer cell region is lower than that of the surrounding blank region, and pHe changes of different cancer cells exhibit significant cellular heterogeneity during cellular respiration and drug stimulation processes.
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Affiliation(s)
- Lihui Yang
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Xiaobo Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Bing Yin
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Xunxun Deng
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Xiaotong Lin
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Jie Song
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
| | - Shuo Wu
- School of Chemical Engineering, Dalian University of Technology, Dalian 116023, PR China
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Kalushkova A, Nylund P, Párraga AA, Lennartsson A, Jernberg-Wiklund H. One Omics Approach Does Not Rule Them All: The Metabolome and the Epigenome Join Forces in Haematological Malignancies. EPIGENOMES 2021; 5:epigenomes5040022. [PMID: 34968247 PMCID: PMC8715477 DOI: 10.3390/epigenomes5040022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 02/01/2023] Open
Abstract
Aberrant DNA methylation, dysregulation of chromatin-modifying enzymes, and microRNAs (miRNAs) play a crucial role in haematological malignancies. These epimutations, with an impact on chromatin accessibility and transcriptional output, are often associated with genomic instability and the emergence of drug resistance, disease progression, and poor survival. In order to exert their functions, epigenetic enzymes utilize cellular metabolites as co-factors and are highly dependent on their availability. By affecting the expression of metabolic enzymes, epigenetic modifiers may aid the generation of metabolite signatures that could be utilized as targets and biomarkers in cancer. This interdependency remains often neglected and poorly represented in studies, despite well-established methods to study the cellular metabolome. This review critically summarizes the current knowledge in the field to provide an integral picture of the interplay between epigenomic alterations and the cellular metabolome in haematological malignancies. Our recent findings defining a distinct metabolic signature upon response to enhancer of zeste homolog 2 (EZH2) inhibition in multiple myeloma (MM) highlight how a shift of preferred metabolic pathways may potentiate novel treatments. The suggested link between the epigenome and the metabolome in haematopoietic tumours holds promise for the use of metabolic signatures as possible biomarkers of response to treatment.
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Affiliation(s)
- Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
- Correspondence:
| | - Patrick Nylund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
| | - Andreas Lennartsson
- Department of Biosciences and Nutrition, NEO, Karolinska Institutet, 14157 Huddinge, Sweden;
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
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Jezewski AJ, Lin YH, Reisz JA, Culp-Hill R, Barekatain Y, Yan VC, D'Alessandro A, Muller FL, Odom John AR. Targeting Host Glycolysis as a Strategy for Antimalarial Development. Front Cell Infect Microbiol 2021; 11:730413. [PMID: 34604112 PMCID: PMC8482815 DOI: 10.3389/fcimb.2021.730413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/17/2021] [Indexed: 11/13/2022] Open
Abstract
Glycolysis controls cellular energy, redox balance, and biosynthesis. Antiglycolytic therapies are under investigation for treatment of obesity, cancer, aging, autoimmunity, and microbial diseases. Interrupting glycolysis is highly valued as a therapeutic strategy, because glycolytic disruption is generally tolerated in mammals. Unfortunately, anemia is a known dose-limiting side effect of these inhibitors and presents a major caveat to development of antiglycolytic therapies. We developed specific inhibitors of enolase – a critical enzyme in glycolysis – and validated their metabolic and cellular effects on human erythrocytes. Enolase inhibition increases erythrocyte susceptibility to oxidative damage and induces rapid and premature erythrocyte senescence, rather than direct hemolysis. We apply our model of red cell toxicity to address questions regarding erythrocyte glycolytic disruption in the context of Plasmodium falciparum malaria pathogenesis. Our study provides a framework for understanding red blood cell homeostasis under normal and disease states and clarifies the importance of erythrocyte reductive capacity in malaria parasite growth.
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Affiliation(s)
- Andrew J Jezewski
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States.,Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States
| | - Yu-Hsi Lin
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, Aurora, CO, United States
| | - Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, Aurora, CO, United States
| | - Yasaman Barekatain
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Victoria C Yan
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, Aurora, CO, United States
| | - Florian L Muller
- Department of Cancer Systems Imaging, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Department of Neuro-Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Audrey R Odom John
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States.,Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States
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Common Genetic Aberrations Associated with Metabolic Interferences in Human Type-2 Diabetes and Acute Myeloid Leukemia: A Bioinformatics Approach. Int J Mol Sci 2021; 22:ijms22179322. [PMID: 34502231 PMCID: PMC8431701 DOI: 10.3390/ijms22179322] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022] Open
Abstract
Type-2 diabetes mellitus (T2D) is a chronic metabolic disorder, associated with an increased risk of developing solid tumors and hematological malignancies, including acute myeloid leukemia (AML). However, the genetic background underlying this predisposition remains elusive. We herein aimed at the exploration of the genetic variants, related transcriptomic changes and disturbances in metabolic pathways shared by T2D and AML, utilizing bioinformatics tools and repositories, as well as publicly available clinical datasets. Our approach revealed that rs11709077 and rs1801282, on PPARG, rs11108094 on USP44, rs6685701 on RPS6KA1 and rs7929543 on AC118942.1 comprise common SNPs susceptible to the two diseases and, together with 64 other co-inherited proxy SNPs, may affect the expression patterns of metabolic genes, such as USP44, METAP2, PPARG, TIMP4 and RPS6KA1, in adipose tissue, skeletal muscle, liver, pancreas and whole blood. Most importantly, a set of 86 AML/T2D common susceptibility genes was found to be significantly associated with metabolic cellular processes, including purine, pyrimidine, and choline metabolism, as well as insulin, AMPK, mTOR and PI3K signaling. Moreover, it was revealed that the whole blood of AML patients exhibits deregulated expression of certain T2D-related genes. Our findings support the existence of common metabolic perturbations in AML and T2D that may account for the increased risk for AML in T2D patients. Future studies may focus on the elucidation of these pathogenetic mechanisms in AML/T2D patients, as well as on the assessment of certain susceptibility variants and genes as potential biomarkers for AML development in the setting of T2D. Detection of shared therapeutic molecular targets may enforce the need for repurposing metabolic drugs in the therapeutic management of AML.
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10
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Sendker S, Waack K, Reinhardt D. Far from Health: The Bone Marrow Microenvironment in AML, A Leukemia Supportive Shelter. CHILDREN (BASEL, SWITZERLAND) 2021; 8:371. [PMID: 34066861 PMCID: PMC8150304 DOI: 10.3390/children8050371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 12/28/2022]
Abstract
Acute myeloid leukemia (AML) is the second most common leukemia among children. Although significant progress in AML therapy has been achieved, treatment failure is still associated with poor prognosis, emphasizing the need for novel, innovative therapeutic approaches. To address this major obstacle, extensive knowledge about leukemogenesis and the complex interplay between leukemic cells and their microenvironment is required. The tremendous role of this bone marrow microenvironment in providing a supportive and protective shelter for leukemic cells, leading to disease development, progression, and relapse, has been emphasized by recent research. It has been revealed that the interplay between leukemic cells and surrounding cellular as well as non-cellular components is critical in the process of leukemogenesis. In this review, we provide a comprehensive overview of recently gained knowledge about the importance of the microenvironment in AML whilst focusing on promising future therapeutic targets. In this context, we describe ongoing clinical trials and future challenges for the development of targeted therapies for AML.
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Affiliation(s)
| | | | - Dirk Reinhardt
- Department of Pediatric Hematology and Oncology, Clinic of Pediatrics III, Essen University Hospital, 45147 Essen, Germany; (S.S.); (K.W.)
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11
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Acute myeloid leukemia sensitivity to metabolic inhibitors: glycolysis showed to be a better therapeutic target. Med Oncol 2020; 37:72. [PMID: 32725458 DOI: 10.1007/s12032-020-01394-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/16/2020] [Indexed: 12/15/2022]
Abstract
Cancer cells alter their metabolism by switching from glycolysis to oxidative phosphorylation (OXPHOS), regardless of oxygen availability. Metabolism may be a molecular target in acute myeloid leukemia (AML), where mutations in metabolic genes have been described. This study evaluated glycolysis and OXPHOS as therapeutic targets. The sensitivity to 2-deoxy-D-glucose (2-DG; glycolysis inhibitor) and oligomycin (OXPHOS inhibitor) was tested in six AML cell lines (HEL, HL-60, K-562, KG-1, NB-4, THP-1). These cells were characterized for IDH1/2 exon 4 mutations, reactive oxygen species, and mitochondrial membrane potential. Metabolic activity was assessed by resazurin assay, whereas cell death and cell cycle were assessed by flow cytometry. Glucose uptake and metabolism-related gene expression were analyzed by 18F-FDG and RT-PCR/qPCR, respectively. No IDH1/2 exon 4 mutations were detected. HEL cells had the highest 18F-FDG uptake and peroxides/superoxide anion levels, whereas THP-1 showed the lowest. 2-DG reduced metabolic activity in all cell lines with HEL, KG-1, and NB-4 being the most sensitive cells. Oligomycin decreased metabolic activity in a cell line-dependent manner, the THP-1 resistant and HL-60 being the most sensitive. Both inhibitors induced apoptosis and cell cycle arrest in a cell line- and compound-dependent manner. 2-DG decreased 18F-FDG uptake in HEL, HL-60, KG-1, and NB-4, while oligomycin increased the uptake in K-562. Metabolism gene expression had different responses to treatments. In conclusion, HEL and KG-1 show to be more glycolytic, whereas HL-60 was more OXPHOS dependent. Results suggest that AML cells reprogram their metabolism to overcome OXPHOS inhibition suggesting that glycolysis may be a better therapeutic target.
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12
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Matsuo T, Konya Y, Hirayama E, Sadzuka Y. 2-Deoxy-D-glucose enhances the anti-cancer effects of idarubicin on idarubicin-resistant P388 leukemia cells. Oncol Lett 2020; 20:962-966. [PMID: 32566026 DOI: 10.3892/ol.2020.11616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/18/2020] [Indexed: 01/06/2023] Open
Abstract
Cancer cells switch from mitochondrial oxidative phosphorylation to glycolysis, even in the presence of normal oxygen concentrations. Inhibition of the glycolytic pathway is therefore a critical strategy in cancer therapy. A non-metabolic glucose analog, 2-deoxy-D-glucose (2-DG), has been the focus of research on glycolytic inhibitors for use in cancer treatment. The current study examined the anti-cancer effects of 2-DG on idarubicin (IDA)-resistant P388 (P388/IDA) leukemia cells. P388/IDA cells were established following continuous exposure of IDA to P388 cells. Characterization of P388/IDA cells revealed increased lactate production and glucose consumption compared with P388 parent cells. The results of a cell viability assay determined that 2-DG induces higher toxicity in P388/IDA cells compared with P388 cells. Although 2-DG also exhibits endoplasmic reticulum (ER) stress-inducing activity, the cytotoxic effect of the ER stress inducer, tunicamycin, on P388/IDA cells was lower than that of P388 cells. A combination of 2-DG and IDA enhanced P388/IDA cell death compared with each agent alone. The results indicated that P388 cells activated glycolysis after acquiring IDA resistance and therefore, inhibition of the glycolytic pathway via 2-DG might be a useful strategy for cancer therapy against IDA- resistant leukemia cells.
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Affiliation(s)
- Taisuke Matsuo
- Division of Advanced Pharmaceutics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Iwate 028-3694, Japan
| | - Yumiko Konya
- Division of Advanced Pharmaceutics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Iwate 028-3694, Japan
| | - Eri Hirayama
- Division of Advanced Pharmaceutics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Iwate 028-3694, Japan
| | - Yasuyuki Sadzuka
- Division of Advanced Pharmaceutics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Iwate 028-3694, Japan
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13
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Joly JH, Delfarah A, Phung PS, Parrish S, Graham NA. A synthetic lethal drug combination mimics glucose deprivation–induced cancer cell death in the presence of glucose. J Biol Chem 2020. [DOI: 10.1016/s0021-9258(17)49891-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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14
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Joly JH, Delfarah A, Phung PS, Parrish S, Graham NA. A synthetic lethal drug combination mimics glucose deprivation-induced cancer cell death in the presence of glucose. J Biol Chem 2019; 295:1350-1365. [PMID: 31914417 DOI: 10.1074/jbc.ra119.011471] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/21/2019] [Indexed: 01/13/2023] Open
Abstract
Metabolic reprogramming in cancer cells can increase their dependence on metabolic substrates such as glucose. As such, the vulnerability of cancer cells to glucose deprivation creates an attractive opportunity for therapeutic intervention. Because it is not possible to starve tumors of glucose in vivo, here we sought to identify the mechanisms in glucose deprivation-induced cancer cell death and then designed inhibitor combinations to mimic glucose deprivation-induced cell death. Using metabolomic profiling, we found that cells undergoing glucose deprivation-induced cell death exhibited dramatic accumulation of intracellular l-cysteine and its oxidized dimer, l-cystine, and depletion of the antioxidant GSH. Building on this observation, we show that glucose deprivation-induced cell death is driven not by the lack of glucose, but rather by l-cystine import. Following glucose deprivation, the import of l-cystine and its subsequent reduction to l-cysteine depleted both NADPH and GSH pools, thereby allowing toxic accumulation of reactive oxygen species. Consistent with this model, we found that the glutamate/cystine antiporter (xCT) is required for increased sensitivity to glucose deprivation. We searched for glycolytic enzymes whose expression is essential for the survival of cancer cells with high xCT expression and identified glucose transporter type 1 (GLUT1). Testing a drug combination that co-targeted GLUT1 and GSH synthesis, we found that this combination induces synthetic lethal cell death in high xCT-expressing cell lines susceptible to glucose deprivation. These results indicate that co-targeting GLUT1 and GSH synthesis may offer a potential therapeutic approach for targeting tumors dependent on glucose for survival.
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Affiliation(s)
- James H Joly
- Mork Family Department of Chemical Engineering and Materials Science
| | - Alireza Delfarah
- Mork Family Department of Chemical Engineering and Materials Science
| | - Philip S Phung
- Mork Family Department of Chemical Engineering and Materials Science
| | - Sydney Parrish
- Mork Family Department of Chemical Engineering and Materials Science
| | - Nicholas A Graham
- Mork Family Department of Chemical Engineering and Materials Science, .,Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California 90089
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15
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Libby CJ, McConathy J, Darley-Usmar V, Hjelmeland AB. The Role of Metabolic Plasticity in Blood and Brain Stem Cell Pathophysiology. Cancer Res 2019; 80:5-16. [PMID: 31575548 DOI: 10.1158/0008-5472.can-19-1169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 08/04/2019] [Accepted: 09/18/2019] [Indexed: 02/06/2023]
Abstract
Our understanding of intratumoral heterogeneity in cancer continues to evolve, with current models incorporating single-cell signatures to explore cell-cell interactions and differentiation state. The transition between stem and differentiation states in nonneoplastic cells requires metabolic plasticity, and this plasticity is increasingly recognized to play a central role in cancer biology. The insights from hematopoietic and neural stem cell differentiation pathways were used to identify cancer stem cells in leukemia and gliomas. Similarly, defining metabolic heterogeneity and fuel-switching signals in nonneoplastic stem cells may also give important insights into the corresponding molecular mechanisms controlling metabolic plasticity in cancer. These advances are important, because metabolic adaptation to anticancer therapeutics is rooted in this inherent metabolic plasticity and is a therapeutic challenge to be overcome.
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Affiliation(s)
- Catherine J Libby
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jonathan McConathy
- Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Victor Darley-Usmar
- Mitochondrial Medicine Laboratory, Center for Free Radical Biology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Anita B Hjelmeland
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama.
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16
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Lee N, Jang WJ, Seo JH, Lee S, Jeong CH. 2-Deoxy-d-Glucose-Induced Metabolic Alteration in Human Oral Squamous SCC15 Cells: Involvement of N-Glycosylation of Axl and Met. Metabolites 2019; 9:E188. [PMID: 31533338 PMCID: PMC6780519 DOI: 10.3390/metabo9090188] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/07/2019] [Accepted: 09/12/2019] [Indexed: 12/20/2022] Open
Abstract
One of the most prominent hallmarks of cancer cells is their dependency on the glycolytic pathway for energy production. As a potent inhibitor of glycolysis, 2-deoxy-d-glucose (2DG) has been proposed for cancer treatment and extensively investigated in clinical studies. Moreover, 2DG has been reported to interfere with other biological processes including glycosylation. To further understand the overall effect of and metabolic alteration by 2DG, we performed biochemical and metabolomics analyses on oral squamous cell carcinoma cell lines. In this study, we found that 2DG more effectively reduced glucose consumption and lactate level in SCC15 cells than in SCC4 cells, which are less dependent on glycolysis. Coincidentally, 2DG impaired N-linked glycosylation of the key oncogenic receptors Axl and Met in SCC15 cells, thereby reducing the cell viability and colony formation ability. The impaired processes of glycolysis and N-linked glycosylation were restored by exogenous addition of pyruvate and mannose, respectively. Additionally, our targeted metabolomics analysis revealed significant alterations in the metabolites, including amino acids, biogenic amines, glycerophospholipids, and sphingolipids, caused by the impairment of glycolysis and N-linked glycosylation. These observations suggest that alterations of these metabolites may be responsible for the phenotypic and metabolic changes in SCC15 cells induced by 2DG. Moreover, our data suggest that N-linked glycosylation of Axl and Met may contribute to the maintenance of cancer properties in SCC15 cells. Further studies are needed to elucidate the roles of these altered metabolites to provide novel therapeutic targets for treating human oral cancer.
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Affiliation(s)
- Naeun Lee
- College of Pharmacy, Keimyung University, Daegu 42601, Korea.
| | - Won-Jun Jang
- College of Pharmacy, Keimyung University, Daegu 42601, Korea.
| | - Ji Hae Seo
- Department of Biochemistry, Keimyung University School of Medicine, Daegu 42601, Korea.
| | - Sooyeun Lee
- College of Pharmacy, Keimyung University, Daegu 42601, Korea.
| | - Chul-Ho Jeong
- College of Pharmacy, Keimyung University, Daegu 42601, Korea.
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17
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Koenig JB, Cantu D, Low C, Sommer M, Noubary F, Croker D, Whalen M, Kong D, Dulla CG. Glycolytic inhibitor 2-deoxyglucose prevents cortical hyperexcitability after traumatic brain injury. JCI Insight 2019; 5:126506. [PMID: 31038473 DOI: 10.1172/jci.insight.126506] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Traumatic brain injury (TBI) causes cortical dysfunction and can lead to post-traumatic epilepsy. Multiple studies demonstrate that GABAergic inhibitory network function is compromised following TBI, which may contribute to hyperexcitability and motor, behavioral, and cognitive deficits. Preserving the function of GABAergic interneurons, therefore, is a rational therapeutic strategy to preserve cortical function after TBI and prevent long-term clinical complications. Here, we explored an approach based on the ketogenic diet, a neuroprotective and anticonvulsant dietary therapy which results in reduced glycolysis and increased ketosis. Utilizing a pharmacologic inhibitor of glycolysis (2-deoxyglucose, or 2-DG), we found that acute in vitro application of 2-DG decreased the excitability of excitatory neurons, but not inhibitory interneurons, in cortical slices from naïve mice. Employing the controlled cortical impact (CCI) model of TBI in mice, we found that in vitro 2-DG treatment rapidly attenuated epileptiform activity seen in acute cortical slices 3 to 5 weeks after TBI. One week of in vivo 2-DG treatment immediately after TBI prevented the development of epileptiform activity, restored excitatory and inhibitory synaptic activity, and attenuated the loss of parvalbumin-expressing inhibitory interneurons. In summary, 2-DG may have therapeutic potential to restore network function following TBI.
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Affiliation(s)
- Jenny B Koenig
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA.,Neuroscience Program, Tufts University Sackler School of Graduate Biomedical Sciences, Boston, Massachusetts, USA
| | - David Cantu
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Cho Low
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA.,Cellular, Molecular, and Developmental Biology Program, Tufts University Sackler School of Graduate Biomedical Sciences, Boston, Massachusetts, USA
| | - Mary Sommer
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Farzad Noubary
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts, USA
| | - Danielle Croker
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Michael Whalen
- Neuroscience Center, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts, USA.,Department of Pediatrics, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Dong Kong
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Chris G Dulla
- Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts, USA
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18
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Noel BM, Ouellette SB, Marholz L, Dickey D, Navis C, Yang TY, Nguyen V, Parker SJ, Bernlohr D, Sachs Z, Parker LL. Multiomic Profiling of Tyrosine Kinase Inhibitor-Resistant K562 Cells Suggests Metabolic Reprogramming To Promote Cell Survival. J Proteome Res 2019; 18:1842-1856. [PMID: 30730747 DOI: 10.1021/acs.jproteome.9b00028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Resistance to chemotherapy can occur through a wide variety of mechanisms. Resistance to tyrosine kinase inhibitors (TKIs) often arises from kinase mutations-however, "off-target" resistance occurs but is poorly understood. Previously, we established cell line resistance models for three TKIs used in chronic myeloid leukemia treatment, and found that resistance was not attributed entirely to failure of kinase inhibition. Here, we performed global, integrated proteomic and transcriptomic profiling of these cell lines to describe mechanisms of resistance at the protein and gene expression level. We used whole transcriptome sequencing and SWATH-based data-independent acquisition mass spectrometry (DIA-MS), which does not require isotopic labels and provides quantitative measurements of proteins in a comprehensive, unbiased fashion. The proteomic and transcriptional data were correlated to generate an integrated understanding of the gene expression and protein alterations associated with TKI resistance. We defined mechanisms of resistance and two novel markers, CA1 and alpha-synuclein, that were common to all TKIs tested. Resistance to all of the TKIs was associated with oxidative stress responses, hypoxia signatures, and apparent metabolic reprogramming of the cells. Metabolite profiling and glucose-dependence experiments showed that resistant cells had routed their metabolism through glycolysis (particularly through the pentose phosphate pathway) and exhibited disruptions in mitochondrial metabolism. These experiments are the first to report a global, integrated proteomic, transcriptomic, and metabolic analysis of TKI resistance. These data suggest that although the mechanisms are complex, targeting metabolic pathways along with TKI treatment may overcome pan-TKI resistance.
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Affiliation(s)
- Brett M Noel
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States.,Department of Medicinal Chemistry and Molecular Pharmacology , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Steven B Ouellette
- Department of Medicinal Chemistry and Molecular Pharmacology , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Laura Marholz
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Deborah Dickey
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Connor Navis
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Tzu-Yi Yang
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Vinh Nguyen
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Sarah J Parker
- Smidt Heart Institute , Cedars Sinai , Los Angeles , California 90048 , United States
| | - David Bernlohr
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Zohar Sachs
- Department of Medicine , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Laurie L Parker
- Department of Biochemistry, Molecular Biology and Biophysics , University of Minnesota , Minneapolis , Minnesota 55455 , United States
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19
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Pereira O, Teixeira A, Sampaio-Marques B, Castro I, Girão H, Ludovico P. Signalling mechanisms that regulate metabolic profile and autophagy of acute myeloid leukaemia cells. J Cell Mol Med 2018; 22:4807-4817. [PMID: 30117681 PMCID: PMC6156238 DOI: 10.1111/jcmm.13737] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/20/2018] [Indexed: 02/06/2023] Open
Abstract
Acute myeloid leukaemia (AML) comprises a heterogeneous group of hematologic neoplasms characterized by diverse combinations of genetic, phenotypic and clinical features representing a major challenge for the development of targeted therapies. Metabolic reprogramming, mainly driven by deregulation of the nutrient‐sensing pathways as AMPK, mTOR and PI3K/AKT, has been associated with cancer cells, including AML cells, survival and proliferation. Nevertheless, the role of these metabolic adaptations on the AML pathogenesis is still controversial. In this work, the metabolic status and the respective metabolic networks operating in different AML cells (NB‐4, HL‐60 and KG‐1) and their impact on autophagy and survival was characterized. Data show that whereas KG‐1 cells exhibited preferential mitochondrial oxidative phosphorylation metabolism with constitutive co‐activation of AMPK and mTORC1 associated with increased autophagy, NB‐4 and HL‐60 cells displayed a dependent glycolytic profile mainly associated with AKT/mTORC1 activation and low autophagy flux. Inhibition of AKT is disclosed as a promising therapeutical target in some scenarios while inhibition of AMPK and mTORC1 has no major impact on KG‐1 cells’ survival. The results highlight an exclusive metabolic profile for each tested AML cells and its impact on determination of the anti‐leukaemia efficacy and on personalized combinatory therapy with conventional and targeted agents.
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Affiliation(s)
- Olga Pereira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra Teixeira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Belém Sampaio-Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Isabel Castro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Henrique Girão
- Institute for Biomedical Imaging and Life Science (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Paula Ludovico
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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20
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Mitochondrial phosphoenolpyruvate carboxykinase (PEPCK-M) regulates the cell metabolism of pancreatic neuroendocrine tumors (pNET) and de-sensitizes pNET to mTOR inhibitors. Oncotarget 2017; 8:103613-103625. [PMID: 29262588 PMCID: PMC5732754 DOI: 10.18632/oncotarget.21665] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 09/13/2017] [Indexed: 01/01/2023] Open
Abstract
mTOR pathway activation and hypervascularity have been identified as important characteristics of pancreatic neuroendocrine tumors (pNETs). Agents targeting angiogenesis and mTOR, such as sunitinib and everolimus (RAD001), have been shown to result in progression-free survival of approximately 11 months in patients with advanced pNETs. Novel treatment is needed to extend survival. Mitochondrial phosphoenolpyruvate carboxykinase (PEPCK-M), which is encoded by PCK2, catalyzes the conversion of oxaloacetate to phosphoenolpyruvate. PEPCK-M has been demonstrated to potentiate cytoplasmic phosphoenolpyruvate carboxykinase (PEPCK-C)-mediated gluconeogenesis and to play a critical role in the survival program initiated upon stress during metabolism in cancer cells. Elevated expression of PCK2 has been found in various tumors according to the results of The Cancer Genome Atlas project. However, the role of PEPCK-M aberration in cancers is not well understood. In the current study, we observed that 12 of 21 (57%) pNET patients had high expression of PEPCK-M in the tumors, whereas the normal islet cells had weak expression of PEPCK-M. Knockdown of PCK2 inhibited the proliferation of pNET cells and enhanced the sensitivity of pNET cells to mTOR inhibitors. Knockdown of PCK2 promoted glycolysis but reduced mitochondrial oxidative phosphorylation in pNET cells. The combination of mTOR inhibitors and an anti-glycolysis agent, 2-DG, synergistically or additively inhibited the proliferation of pNET cells, particularly for the cells with high expression of PEPCK-M. Therefore, targeting PEPCK-M or glycolysis combined with inhibiting mTOR is a potential therapeutic approach for the treatment of pNETs.
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21
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Forte N, Medrihan L, Cappetti B, Baldelli P, Benfenati F. 2-Deoxy-d-glucose enhances tonic inhibition through the neurosteroid-mediated activation of extrasynaptic GABA A receptors. Epilepsia 2016; 57:1987-2000. [PMID: 27735054 DOI: 10.1111/epi.13578] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The inhibition of glycolysis exerts potent antiseizure effects, as demonstrated by the efficacy of ketogenic and low-glucose/nonketogenic diets in the treatment of drug-resistant epilepsy. ATP-sensitive potassium (KATP ) channels have been initially identified as the main determinant of the reduction of neuronal hyperexcitability. However, a plethora of other mechanisms have been proposed. Herein, we report the ability of 2-deoxy-d-glucose (2-DG), a glucose analog that inhibits glycolytic enzymes, of potentiating γ-aminobutyric acid (GABA)ergic tonic inhibition via neurosteroid-mediated activation of extrasynaptic GABAA receptors. METHODS Acute effects of 2-DG on the ATP-sensitive potassium currents, GABAergic tonic inhibition, firing activity, and interictal events were assessed in hippocampal slices by whole-cell patch-clamp and local field potential recordings of dentate gyrus granule cells. RESULTS Acute application of 2-DG activates two distinct outward conductances: a KATP channel-mediated current and a bicuculline-sensitive tonic current. The effect of 2-DG on such GABAergic tonic currents was fully prevented by either finasteride or PK11195, which are specific inhibitors of the neurosteroidogenesis pathway acting via different mechanisms. Moreover, the oxidized form of vitamin C, dehydroascorbic acid, known for its ability to induce neurosteroidogenesis, also activated a bicuculline-sensitive tonic current in a manner indistinguishable from that of 2-DG. Finally, we found that the enhancement of KATP current by 2-DG primarily regulates intrinsic firing rate of granule cells, whereas the increase of the GABAergic tonic current plays a key role in reducing the frequency of interictal events evoked by treatment of hippocampal slices with the convulsive agent 4-aminopyridine. SIGNIFICANCE We demonstrated, for the first time, that 2-DG potentiates the extrasynaptic tonic GABAergic current through activation of neurosteroidogenesis. Such tonic inhibition represents the main conductance responsible for the antiseizure action of this glycolytic inhibitor.
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Affiliation(s)
- Nicola Forte
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy.,Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Lucian Medrihan
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy
| | - Beatrice Cappetti
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy
| | - Pietro Baldelli
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy.,Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genova, Italy.,Department of Experimental Medicine, University of Genova, Genova, Italy
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22
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Hartel I, Ronellenfitsch M, Wanka C, Wolking S, Steinbach JP, Rieger J. Activation of AMP-activated kinase modulates sensitivity of glioma cells against epidermal growth factor receptor inhibition. Int J Oncol 2016; 49:173-80. [PMID: 27121290 DOI: 10.3892/ijo.2016.3498] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 01/20/2016] [Indexed: 11/06/2022] Open
Abstract
The epidermal growth factor (EGFR) pathway is frequently activated in glioblastoma but the clinical efficacy of EGFR inhibitors in malignant glioma has been disappointing. The reasons for the failure of the mechanisms of resistance of these inhibitors are unclear, but may involve factors of the tumor microenvironment such as limited glucose availability and hypoxia. It was therefore examined whether glucose and oxygen influenced the response of glioma cells to EGFR inhibition. Decreased levels of glucose and oxygen led to resistance against the EGFR inhibitor PD153035, whereas high glucose amounts and normoxia sensitised glioma cells towards the inhibitor. Low levels of glucose and oxygen stimulated AMP-activated kinase (AMPK) in glioma cells. 2DG, an inhibitor of glycolysis, and the AMPK activator A769662 reduced glucose consumption, induced phosphorylation of AMPK and mimicked the effects of low glucose availability on the toxicity of PD153035. Similarly, 2DG reduced toxicity of imatinib in K562 leukemia cells. In contrast, inhibition of AMPK by compound C or by short-hairpin (sh)-mediated gene suppression increased cell death induced by the EGFR inhibitor and reverted the protective effects of 2DG and A769662. In conclusion, cytotoxicity of EGFR inhibition can be diminished by AMPK activation in glioma cells. These results may provide one explanation for the low activity of EGFR inhibitors in clinical trials and suggest antagonism of AMPK or of AMPK-regulated metabolic alterations as a promising approach to enhance their therapeutic efficacy.
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Affiliation(s)
- Ines Hartel
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, D-60528 Frankfurt, Germany
| | - Michael Ronellenfitsch
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, D-60528 Frankfurt, Germany
| | - Christina Wanka
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, D-60528 Frankfurt, Germany
| | - Stefan Wolking
- Department of Neurology and Epileptology, Hertie Institute for Clinical Brain Research, D-72076 Tübingen, Germany
| | - Joachim P Steinbach
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, D-60528 Frankfurt, Germany
| | - Johannes Rieger
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, D-60528 Frankfurt, Germany
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Effect of Dietary ω-3 Polyunsaturated Fatty Acid DHA on Glycolytic Enzymes and Warburg Phenotypes in Cancer. BIOMED RESEARCH INTERNATIONAL 2015; 2015:137097. [PMID: 26339588 PMCID: PMC4538308 DOI: 10.1155/2015/137097] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 01/15/2015] [Indexed: 12/22/2022]
Abstract
The omega-3 polyunsaturated fatty acids (ω-3 PUFAs) are a class of lipids that has been shown to have beneficial effects on some chronic degenerative diseases such as cardiovascular diseases, rheumatoid arthritis, inflammatory disorders, diabetes, and cancer. Among ω-3 polyunsaturated fatty acids (PUFAs), docosahexaenoic acid (DHA) has received particular attention for its antiproliferative, proapoptotic, antiangiogenetic, anti-invasion, and antimetastatic properties, even though the involved molecular mechanisms are not well understood. Recently, some in vitro studies showed that DHA promotes the inhibition of glycolytic enzymes and the Warburg phenotype. For example, it was shown that in breast cancer cell lines the modulation of bioenergetic functions is due to the capacity of DHA to activate the AMPK signalling and negatively regulate the HIF-1α functions. Taking into account these considerations, this review is focused on current knowledge concerning the role of DHA in interfering with cancer cell metabolism; this could be considered a further mechanism by which DHA inhibits cancer cell survival and progression.
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Pang YY, Wang T, Chen FY, Wu YL, Shao X, Xiao F, Huang HH, Zhong H, Zhong JH. Glycolytic inhibitor 2-deoxy-d-glucose suppresses cell proliferation and enhances methylprednisolone sensitivity in non-Hodgkin lymphoma cells through down-regulation of HIF-1α and c-MYC. Leuk Lymphoma 2014; 56:1821-30. [PMID: 25219592 DOI: 10.3109/10428194.2014.963575] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Metabolic reprogramming is linked to tumorigenesis, disease progression, clinical outcome and resistance to chemotherapy. However, the significance of glycolytic metabolism in non-Hodgkin lymphoma (NHL) remains unclear. Here we report that both NHL patient-samples and cell lines exhibited significant up-regulation of glycolytic metabolism. The glycolytic inhibitor 2-deoxy-d-glucose (2-DG) inhibited glucose consumption, lactic acid generation and cell proliferation and induced cell cycle arrest in NHL cell lines under both normoxia and hypoxia, and hypoxia could even enhance the inhibitory effects of 2-DG. Furthermore, 2-DG combined with methylprednisolone synergistically inhibited cell proliferation, induced cell apoptosis and cell cycle arrest, and thus increased the sensitivity of NHL cells to methylprednisolone via down-regulation of HIF-1α and c-MYC. In conclusion, these results present a novel insight into critical roles of glycolytic pathway activation in NHL progression and glucocorticoid resistance. Inhibition of the glycolytic pathway may provide a new therapeutic strategy for the treatment of NHL.
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Affiliation(s)
- Yu-Yang Pang
- Department of Hematology, Renji Hospital, School of Medicine, Shanghai Jiaotong University , Shanghai , China
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25
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Oburoglu L, Tardito S, Fritz V, de Barros SC, Merida P, Craveiro M, Mamede J, Cretenet G, Mongellaz C, An X, Klysz D, Touhami J, Boyer-Clavel M, Battini JL, Dardalhon V, Zimmermann VS, Mohandas N, Gottlieb E, Sitbon M, Kinet S, Taylor N. Glucose and glutamine metabolism regulate human hematopoietic stem cell lineage specification. Cell Stem Cell 2014; 15:169-84. [PMID: 24953180 DOI: 10.1016/j.stem.2014.06.002] [Citation(s) in RCA: 197] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 12/23/2013] [Accepted: 06/02/2014] [Indexed: 12/16/2022]
Abstract
The metabolic state of quiescent hematopoietic stem cells (HSCs) is an important regulator of self-renewal, but it is unclear whether or how metabolic parameters contribute to HSC lineage specification and commitment. Here, we show that the commitment of human and murine HSCs to the erythroid lineage is dependent upon glutamine metabolism. HSCs require the ASCT2 glutamine transporter and active glutamine metabolism for erythroid specification. Blocking this pathway diverts EPO-stimulated HSCs to differentiate into myelomonocytic fates, altering in vivo HSC responses and erythroid commitment under stress conditions such as hemolytic anemia. Mechanistically, erythroid specification of HSCs requires glutamine-dependent de novo nucleotide biosynthesis. Exogenous nucleosides rescue erythroid commitment of human HSCs under conditions of limited glutamine catabolism, and glucose-stimulated nucleotide biosynthesis further enhances erythroid specification. Thus, the availability of glutamine and glucose to provide fuel for nucleotide biosynthesis regulates HSC lineage commitment under conditions of metabolic stress.
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Affiliation(s)
- Leal Oburoglu
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | | | - Vanessa Fritz
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Stéphanie C de Barros
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Peggy Merida
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Marco Craveiro
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - João Mamede
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Gaspard Cretenet
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Cédric Mongellaz
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Xiuli An
- New York Blood Center, New York, NY 10032, USA; Department of Bioengineering, Zhengzhou University, Zhengzhou 450051, China
| | - Dorota Klysz
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Jawida Touhami
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Myriam Boyer-Clavel
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France
| | - Jean-Luc Battini
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Valérie Dardalhon
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Valérie S Zimmermann
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | | | - Eyal Gottlieb
- Cancer Research UK, Beatson Institute, Glasgow, G61 1BD, UK
| | - Marc Sitbon
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France
| | - Sandrina Kinet
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France.
| | - Naomi Taylor
- Institut de Génétique Moléculaire de Montpellier, Centre National de la Recherche Scientifique UMR5535, Universités de Montpellier 1 et 2, F-34293 Montpellier, France; Laboratory of Excellence GR-Ex, Paris 75015, France.
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Goto M, Miwa H, Shikami M, Tsunekawa-Imai N, Suganuma K, Mizuno S, Takahashi M, Mizutani M, Hanamura I, Nitta M. Importance of glutamine metabolism in leukemia cells by energy production through TCA cycle and by redox homeostasis. Cancer Invest 2014; 32:241-7. [PMID: 24762082 DOI: 10.3109/07357907.2014.907419] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Some cancer cells depend on glutamine despite of pronounced glycolysis. We examined the glutamine metabolism in leukemia cells, and found that HL-60 cells most depended on glutamine in the 4 acute myelogenous leukemia (AML) cell lines examined: growth of HL-60 cells was most suppressed by glutamine deprivation and by inhibition of glutaminolysis, which was rescued by tricarboxylic acid (TCA) cycle intermediate, oxaloacetic acid. Glutamine is also involved in antioxidant defense function by increasing glutathione. Glutamine deprivation suppressed the glutathione content and elevated reactive oxygen species most evidently in HL-60 cells. Glutamine metabolism might be a therapeutic target in some leukemia.
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Affiliation(s)
- Mineaki Goto
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine , Nagakute, Aichi , Japan
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27
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Goto M, Miwa H, Suganuma K, Tsunekawa-Imai N, Shikami M, Mizutani M, Mizuno S, Hanamura I, Nitta M. Adaptation of leukemia cells to hypoxic condition through switching the energy metabolism or avoiding the oxidative stress. BMC Cancer 2014; 14:76. [PMID: 24506813 PMCID: PMC3922169 DOI: 10.1186/1471-2407-14-76] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 02/06/2014] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Like normal hematopoietic stem cells, leukemia cells proliferate in bone marrow, where oxygen supply is limited. However, the growth and energy metabolism of leukemia cells under hypoxia have not been well understood. Although it has been known that reactive oxygen species (ROS) is generated under hypoxic conditions, normal and leukemia stem cells were characterized by relatively low levels of ROS. Roles of ROS on leukemia cells under hypoxia also have not been well understood. METHODS Four Leukemia cell lines were cultured under normoxia (21% O2) or hypoxia (1% O2), where NB4 and THP-1 were most extensively studied. To evaluate energy metabolism, we estimated whole cell number or apoptotic cells with or without a glycolysis inhibitor or an oxidative phosphorylation (OXPHOS) inhibitor. Glucose consumption and lactate production were also measured. To evaluate oxidative stress in hypoxic condition, the ROS level and GSH (reduced glutathione) / GSSG (oxidized glutathione) ratio was measured. In addition, pyruvate dehydrogenase kinase 1 (PDK1) and cytochrome c oxidase subunit 4 (COX4) were examined by western blotting or RT-PCR. RESULTS NB4, which grows well under normoxia depending on glycolysis, demonstrated prominent apoptosis and growth suppression after 48 hours culture under hypoxia. NB4 cells cultured under hypoxia showed significantly increased ROS. Culture with a ROS scavenger resulted in decrease of apoptotic cell death of NB4 under hypoxia. NB4 cells cultured for longer period (7 days) under hypoxia did not come to extinction, but grew slowly by upregulating GSH synthesis to protect from ROS generated in hypoxic condition. By contrast, THP-1, which largely depends on OXPHOS in mitochondria under normoxia, demonstrated more growth under hypoxia by changing metabolism from OXPHOS to glycolysis through upregulating PDK1. Moreover, THP-1 avoided ROS generation by substituting COX 4 subunit (from COX 4-1 to COX 4-2) through upregulation of LON, a mitochondrial protease under hypoxia. CONCLUSIONS We showed that leukemia cells survive and adapt to the hypoxic condition through various pathways. Our results will help understanding energy metabolism of leukemia cells and creating novel therapeutics.
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Affiliation(s)
| | - Hiroshi Miwa
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan.
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Hales EC, Taub JW, Matherly LH. New insights into Notch1 regulation of the PI3K–AKT–mTOR1 signaling axis: Targeted therapy of γ-secretase inhibitor resistant T-cell acute lymphoblastic leukemia. Cell Signal 2014; 26:149-61. [DOI: 10.1016/j.cellsig.2013.09.021] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 09/30/2013] [Indexed: 02/01/2023]
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29
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Growth of xenotransplanted leukemia cells is influenced by diet nutrients and is attenuated with 2-deoxyglucose. Leuk Res 2013; 37:1132-6. [DOI: 10.1016/j.leukres.2013.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/15/2013] [Accepted: 05/26/2013] [Indexed: 12/31/2022]
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