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Meng L, Yang J, Gao Y, Cao Q, Jiang S, Xiao Y, Wang H, Liu W, Yuan A, Li Y, Huang H. Biomimetic Nanomedicine Targeting Orchestrated Metabolism Coupled with Regulatory Factors to Disrupt the Metabolic Plasticity of Breast Cancer. ACS NANO 2024; 18:4360-4375. [PMID: 38277483 DOI: 10.1021/acsnano.3c10129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Targeting nutrient metabolism has been proposed as an effective therapeutic strategy to combat breast cancer because of its high nutrient requirements. However, metabolic plasticity enables breast cancer cells to survive under unfavorable starvation conditions. The key mammalian target regulators rapamycin (mTOR) and hypoxia-inducible-factor-1 (HIF-1) tightly link the dynamic metabolism of glutamine and glucose to maintain nutrient flux. Blocking nutrient flow also induces autophagy to recycle nutrients in the autophagosome, which exacerbates metastasis and tumor progression. Compared to other common cancers, breast cancer is even more dependent on mTOR and HIF-1 to orchestrate the metabolic network. Therefore, we develop a cascade-boosting integrated nanomedicine to reprogram complementary metabolism coupled with regulators in breast cancer. Glucose oxidase efficiently consumes glucose, while the delivery of rapamycin inside limits the metabolic flux of glutamine and uncouples the feedback regulation of mTOR and HIF-1. The hydroxyl radical generated in a cascade blocks the later phase of autophagy without nutrient recycling. This nanomedicine targeting orchestrated metabolism can disrupt the coordination of glucose, amino acids, nucleotides, lipids, and other metabolic pathways in breast cancer tissues, effectively improving the durable antitumor effect and prognosis of breast cancer. Overall, the cascade-boosting integrated system provides a viable strategy to address cellular plasticity and efficient enzyme delivery.
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Affiliation(s)
- Lingtong Meng
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Jingpeng Yang
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Yang Gao
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Qinyan Cao
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Shunjie Jiang
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Yuyang Xiao
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Haoran Wang
- Medical School, Nanjing University, Nanjing, 210093, China
| | - Wenzheng Liu
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Ahu Yuan
- Medical School, Nanjing University, Nanjing, 210093, China
| | - Yanan Li
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - He Huang
- School of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
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2
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Chardin D, Jing L, Chazal-Ngo-Mai M, Guigonis JM, Rigau V, Goze C, Duffau H, Virolle T, Pourcher T, Burel-Vandenbos F. Identification of Metabolomic Markers in Frozen or Formalin-Fixed and Paraffin-Embedded Samples of Diffuse Glioma from Adults. Int J Mol Sci 2023; 24:16697. [PMID: 38069019 PMCID: PMC10705927 DOI: 10.3390/ijms242316697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
The aim of this study was to identify metabolomic signatures associated with the gliomagenesis pathway (IDH-mutant or IDH-wt) and tumor grade of diffuse gliomas (DGs) according to the 2021 WHO classification on frozen samples and to evaluate the diagnostic performances of these signatures in tumor samples that are formalin-fixed and paraffin-embedded (FFPE). An untargeted metabolomic study was performed using liquid chromatography/mass spectrometry on a cohort of 213 DG samples. Logistic regression with LASSO penalization was used on the frozen samples to build classification models in order to identify IDH-mutant vs. IDH-wildtype DG and high-grade vs low-grade DG samples. 2-Hydroxyglutarate (2HG) was a metabolite of interest to predict IDH mutational status and aminoadipic acid (AAA) and guanidinoacetic acid (GAA) were significantly associated with grade. The diagnostic performances of the models were 82.6% AUC, 70.6% sensitivity and 80.4% specificity for 2HG to predict IDH status and 84.7% AUC, 78.1% sensitivity and 73.4% specificity for AAA and GAA to predict grade from FFPE samples. Thus, this study showed that AAA and GAA are two novel metabolites of interest in DG and that metabolomic data can be useful in the classification of DG, both in frozen and FFPE samples.
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Affiliation(s)
- David Chardin
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des Sciences du Vivant Frederic Joliot, Commissariat a l’Energie Atomique et aux Energies Alternatives (CEA), Université Cote d’Azur (UCA), 06000 Nice, France; (D.C.); (L.J.); (J.-M.G.); (T.P.)
- Service de Médecine Nucléaire, Centre Antoine Lacassagne, Université Cote d’Azur, 06000 Nice, France
| | - Lun Jing
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des Sciences du Vivant Frederic Joliot, Commissariat a l’Energie Atomique et aux Energies Alternatives (CEA), Université Cote d’Azur (UCA), 06000 Nice, France; (D.C.); (L.J.); (J.-M.G.); (T.P.)
| | | | - Jean-Marie Guigonis
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des Sciences du Vivant Frederic Joliot, Commissariat a l’Energie Atomique et aux Energies Alternatives (CEA), Université Cote d’Azur (UCA), 06000 Nice, France; (D.C.); (L.J.); (J.-M.G.); (T.P.)
| | - Valérie Rigau
- Department of Pathology and Oncobiology, Institute for Neurosciences of Montpellier, INSERM U1051, University Hospital of Montpellier, 34000 Montpellier, France;
| | - Catherine Goze
- Laboratory of Solid Tumors Biology, Institute for Neurosciences of Montpellier, INSERM U1051, University Hospital of Montpellier, 34000 Montpellier, France;
| | - Hugues Duffau
- Neurosurgery Department, Institute for Neurosciences of Montpellier, INSERM U1051, University Hospital of Montpellier, 34000 Montpellier, France;
| | - Thierry Virolle
- Team INSERM “Cancer Stem Cell Plasticity and Functional Intra-Tumor Heterogeneity”, Institut de Biologie Valrose, Université Côte D’Azur, CNRS, INSERM, 06000 Nice, France;
| | - Thierry Pourcher
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des Sciences du Vivant Frederic Joliot, Commissariat a l’Energie Atomique et aux Energies Alternatives (CEA), Université Cote d’Azur (UCA), 06000 Nice, France; (D.C.); (L.J.); (J.-M.G.); (T.P.)
| | - Fanny Burel-Vandenbos
- Department of Pathology, University Hospital of Nice, 06000 Nice, France;
- Laboratory “Cancer Stem Cell Plasticity and Functional Intra-Tumor Heterogeneity”, UMR CNRS 7277-UMR INSERM 1091, Institute of Biology Valrose, University Côte d’Azur, 06000 Nice, France
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3
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Weber DD, Aminzadeh-Gohari S, Thapa M, Redtenbacher AS, Catalano L, Capelôa T, Vazeille T, Emberger M, Felder TK, Feichtinger RG, Koelblinger P, Dallmann G, Sonveaux P, Lang R, Kofler B. Ketogenic diets slow melanoma growth in vivo regardless of tumor genetics and metabolic plasticity. Cancer Metab 2022; 10:12. [PMID: 35851093 PMCID: PMC9290281 DOI: 10.1186/s40170-022-00288-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 06/28/2022] [Indexed: 11/29/2022] Open
Abstract
Background Growing evidence supports the use of low-carbohydrate/high-fat ketogenic diets as an adjunctive cancer therapy. However, it is unclear which genetic, metabolic, or immunological factors contribute to the beneficial effect of ketogenic diets. Therefore, we investigated the effect of ketogenic diets on the progression and metabolism of genetically and metabolically heterogeneous melanoma xenografts, as well as on the development of melanoma metastases in mice with a functional immune system. Methods Mice bearing BRAF mutant, NRAS mutant, and wild-type melanoma xenografts as well as mice bearing highly metastatic melanoma allografts were fed with a control diet or ketogenic diets, differing in their triglyceride composition, to evaluate the effect of ketogenic diets on tumor growth and metastasis. We performed an in-depth targeted metabolomics analysis in plasma and xenografts to elucidate potential antitumor mechanisms in vivo. Results We show that ketogenic diets effectively reduced tumor growth in immunocompromised mice bearing genetically and metabolically heterogeneous human melanoma xenografts. Furthermore, the ketogenic diets exerted a metastasis-reducing effect in the immunocompetent syngeneic melanoma mouse model. Targeted analysis of plasma and tumor metabolomes revealed that ketogenic diets induced distinct changes in amino acid metabolism. Interestingly, ketogenic diets reduced the levels of alpha-amino adipic acid, a biomarker of cancer, in circulation to levels observed in tumor-free mice. Additionally, alpha-amino adipic acid was reduced in xenografts by ketogenic diets. Moreover, the ketogenic diets increased sphingomyelin levels in plasma and the hydroxylation of sphingomyelins and acylcarnitines in tumors. Conclusions Ketogenic diets induced antitumor effects toward melanoma regardless of the tumors´ genetic background, its metabolic signature, and the host immune status. Moreover, ketogenic diets simultaneously affected multiple metabolic pathways to create an unfavorable environment for melanoma cell proliferation, supporting their potential as a complementary nutritional approach to melanoma therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s40170-022-00288-7.
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Affiliation(s)
- Daniela D Weber
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | - Sepideh Aminzadeh-Gohari
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | | | - Anna-Sophia Redtenbacher
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | - Luca Catalano
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | - Tânia Capelôa
- Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - Thibaut Vazeille
- Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | | | - Thomas K Felder
- Department of Laboratory Medicine, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | - René G Feichtinger
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | - Peter Koelblinger
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria
| | | | - Pierre Sonveaux
- Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), 1200, Brussels, Belgium
| | - Roland Lang
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria.
| | - Barbara Kofler
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, 5020, Salzburg, Austria.
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4
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Metabolomic Phenotyping of Gliomas: What Can We Get with Simplified Protocol for Intact Tissue Analysis? Cancers (Basel) 2022; 14:cancers14020312. [PMID: 35053475 PMCID: PMC8773998 DOI: 10.3390/cancers14020312] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/02/2022] [Accepted: 01/05/2022] [Indexed: 12/17/2022] Open
Abstract
Glioblastoma multiforme is one of the most malignant neoplasms among humans in their third and fourth decades of life, which is evidenced by short patient survival times and rapid tumor-cell proliferation after radiation and chemotherapy. At present, the diagnosis of gliomas and decisions related to therapeutic strategies are based on genetic testing and histological analysis of the tumor, with molecular biomarkers still being sought to complement the diagnostic panel. This work aims to enable the metabolomic characterization of cancer tissue and the discovery of potential biomarkers via high-resolution mass spectrometry coupled to liquid chromatography and a solvent-free sampling protocol that uses a microprobe to extract metabolites directly from intact tumors. The metabolomic analyses were performed independently from genetic and histological testing and at a later time. Despite the small cohort analyzed in this study, the results indicated that the proposed method is able to identify metabolites associated with different malignancy grades of glioma, as well as IDH and 1p19q codeletion mutations. A comparison of the constellation of identified metabolites and the results of standard tests indicated the validity of using the characterization of one comprehensive tumor phenotype as a reflection of all diagnostically meaningful information. Due to its simplicity, the proposed analytical approach was verified as being compatible with a surgical environment and applicable for large-scale studies.
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5
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Harmati M, Bukva M, Böröczky T, Buzás K, Gyukity-Sebestyén E. The role of the metabolite cargo of extracellular vesicles in tumor progression. Cancer Metastasis Rev 2021; 40:1203-1221. [PMID: 34957539 PMCID: PMC8825386 DOI: 10.1007/s10555-021-10014-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/15/2021] [Indexed: 12/19/2022]
Abstract
Metabolomic reprogramming in tumor and stroma cells is a hallmark of cancer but understanding its effects on the metabolite composition and function of tumor-derived extracellular vesicles (EVs) is still in its infancy. EVs are membrane-bound sacs with a complex molecular composition secreted by all living cells. They are key mediators of intercellular communication both in normal and pathological conditions and play a crucial role in tumor development. Although lipids are major components of EVs, most of the EV cargo studies have targeted proteins and nucleic acids. The potential of the EV metabolome as a source for biomarker discovery has gained recognition recently, but knowledge on the biological activity of tumor EV metabolites still remains limited. Therefore, we aimed (i) to compile the list of metabolites identified in tumor EVs isolated from either clinical specimens or in vitro samples and (ii) describe their role in tumor progression through literature search and pathway analysis.
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Affiliation(s)
- Mária Harmati
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre - Eötvös Loránd Research Network, 6726, Szeged, Hungary
| | - Mátyás Bukva
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre - Eötvös Loránd Research Network, 6726, Szeged, Hungary.,Department of Immunology, University of Szeged, 6720, Szeged, Hungary.,Doctoral School of Interdisciplinary Medicine, University of Szeged, 6720, Szeged, Hungary
| | - Tímea Böröczky
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre - Eötvös Loránd Research Network, 6726, Szeged, Hungary.,Department of Immunology, University of Szeged, 6720, Szeged, Hungary.,Doctoral School of Interdisciplinary Medicine, University of Szeged, 6720, Szeged, Hungary
| | - Krisztina Buzás
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre - Eötvös Loránd Research Network, 6726, Szeged, Hungary.,Department of Immunology, University of Szeged, 6720, Szeged, Hungary
| | - Edina Gyukity-Sebestyén
- Laboratory of Microscopic Image Analysis and Machine Learning, Institute of Biochemistry, Biological Research Centre - Eötvös Loránd Research Network, 6726, Szeged, Hungary.
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6
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Fang F, Li Y, Chang L. Mechanism of autophagy regulating chemoresistance in esophageal cancer cells. Exp Mol Pathol 2020; 117:104564. [PMID: 33137292 DOI: 10.1016/j.yexmp.2020.104564] [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: 09/23/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 01/17/2023]
Abstract
The current study aimed to explore the mechanism of autophagy-regulating chemoresistance in esophageal cancer (EC) cells. Methods: 45 cases of esophageal cancer cell tissue and 25 cases of adjacent normal tissue excised in the surgical resection were collected from the tumor pathology department of our hospital from March to November 2017. The above cancer cells and paracancerous cells were cultured according to the cell culture procedures. The autophagy was induced by cisplatin in human esophageal cancer EC9706 cells line. The effect of autophagy on the survival of EC9706 cells was observed by autophagy inhibitor 3-MA. Cell viability was also measured by cell counting kit-8 (CCK-8). Apoptosis and cell cycle were detected by flow cytometry. Furthermore, monodansylcadaverine (MDC) was used to detect autophagy. Western blot was applied to determine the molecular changes during treatment. Diketopyrrolopyrrole (DPP) is able to inhibit cell proliferation, induce cell death and cell cycle arrest in the S phase. In addition, autophagy was activated through PI3K-III pathway. Results: 3-MA inhibitor plus 10% fetal bovine serum were added for culture, and the cell culture temperature and humidity were the best conditions. There were few autophagic vesicles in the stationary cells, where their brightness was weakened. There were more and brighter green fluorescent particles in the DPP group without a 3-MA inhibitor, indicating that autophagic parameters actually exist in this process. The apoptosis rate of DDP-induced cell death was not found to be the best, but was higher than that of the control group (P<0.05). The combination of DDP and 3-MA had a more obvious catalytic effect on apoptosis, and the apoptosis rate was much higher than that of single DDP (P<0.05), indicating that DDP was capable of inducing significant apoptosis after inhibiting autophagy. The combination of DDP and 3-MA had an obvious catalytic effect on apoptosis, and the apoptosis rate was higher than that of DDP alone (P < 0.05), suggesting that DDP could significantly improve the ability to induce apoptosis after inhibiting autophagy. The expression level of autophagy-related proteins was also detected by Western blotting. Our findings indicated that autophagy may be a self-protective mechanism of esophageal cancer cells induced by DDP, and its inhibition may be a new strategy for adjuvant chemotherapy in esophageal cancer.
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Affiliation(s)
- Fang Fang
- Department of Medical Oncology, Tangshan Gongren Hospital, Tangshan 063000, China
| | - Yan Li
- Department of Thoracic Suegery, Tangshan Gongren Hospital, Tangshan 063000, China
| | - Liming Chang
- Department of Radiology, Tangshan Gongren Hospital, Tangshan 063000, China.
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7
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Hong D, Rohani Rankouhi S, Thielen JW, van Asten JJA, Norris DG. A comparison of sLASER and MEGA-sLASER using simultaneous interleaved acquisition for measuring GABA in the human brain at 7T. PLoS One 2019; 14:e0223702. [PMID: 31603925 PMCID: PMC6788718 DOI: 10.1371/journal.pone.0223702] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 09/27/2019] [Indexed: 12/19/2022] Open
Abstract
γ-Aminobutyric acid (GABA), the major inhibitory neurotransmitter, is challenging to measure using proton spectroscopy due to its relatively low concentration, J-coupling and overlapping signals from other metabolites. Currently, the prevalent methods for detecting GABA at ultrahigh field strengths (≥ 7 T) are GABA-editing and model fitting of non-editing single voxel spectra. These two acquisition approaches have their own advantages: the GABA editing approach directly measures the GABA resonance at 3 ppm, whereas the fitting approach on the non-editing spectrum allows the detection of multiple metabolites, and has an SNR advantage over longer echo time (TE) acquisitions. This study aims to compare these approaches for estimating GABA at 7 T. We use an interleaved sequence of semi-LASER (sLASER: TE = 38 ms) and MEGA-sLASER (TE = 80 ms). This simultaneous interleaved acquisition minimizes the differential effect of extraneous factors, and enables an accurate comparison of the two acquisition methods. Spectra were acquired with an 8 ml isotropic voxel at six different brain regions: anterior-cingulate cortex, dorsolateral-prefrontal cortex, motor cortex, occipital cortex, posterior cingulate cortex, and precuneus. Spectral fitting with LCModel quantified the GABA to total Cr (tCr: Creatine + Phosphocreatine) concentration ratio. After correcting the T2 relaxation time variation, GABA/tCr ratios were similar between the two acquisition approaches. GABA editing showed smaller spectral fitting error according to Cramér-Rao lower bound than the sLASER approach for all regions examined. We conclude that both acquisition methods show similar accuracy but the precision of the MEGA-editing approach is higher for GABA measurement. In addition, the 2.28 ppm GABA resonance was found to be important for estimating GABA concentration without macromolecule contamination in the GABA-edited acquisition, when utilizing spectral fitting with LCModel.
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Affiliation(s)
- Donghyun Hong
- Erwin L. Hahn Institute for Magnetic Resonance Imaging, University of Duisburg-Essen, Essen, Germany
| | | | - Jan-Willem Thielen
- Erwin L. Hahn Institute for Magnetic Resonance Imaging, University of Duisburg-Essen, Essen, Germany
- Department for Psychiatry and Psychotherapy, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany
| | - Jack J. A. van Asten
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, Netherlands
| | - David G. Norris
- Erwin L. Hahn Institute for Magnetic Resonance Imaging, University of Duisburg-Essen, Essen, Germany
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, Netherlands
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8
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Transcription factor Oct1 protects against hematopoietic stress and promotes acute myeloid leukemia. Exp Hematol 2019; 76:38-48.e2. [PMID: 31295506 PMCID: PMC7670548 DOI: 10.1016/j.exphem.2019.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 06/18/2019] [Accepted: 07/03/2019] [Indexed: 01/01/2023]
Abstract
A better understanding of the development and progression of acute myelogenous leukemia (AML) is necessary to improve patient outcome. Here we define roles for the transcription factor Oct1/Pou2f1 in AML and normal hematopoiesis. Inappropriate reactivation of the CDX2 gene is widely observed in leukemia patients and in leukemia mouse models. We show that Oct1 associates with the CDX2 promoter in both normal and AML primary patient samples, but recruits the histone demethylase Jmjd1a/Kdm3a to remove the repressive H3K9me2 mark only in malignant specimens. The CpG DNA immediately adjacent to the Oct1 binding site within the CDX2 promoter exhibits variable DNA methylation in healthy control blood and bone marrow samples, but complete demethylation in AML samples. In MLL-AF9-driven mouse models, partial loss of Oct1 protects from myeloid leukemia. Complete Oct1 loss completely suppresses leukemia but results in lethality from bone marrow failure. Loss of Oct1 in normal hematopoietic transplants results in superficially normal long-term reconstitution; however, animals become acutely sensitive to 5-fluorouracil, indicating that Oct1 is dispensable for normal hematopoiesis but protects blood progenitor cells against external chemotoxic stress. These findings elucidate a novel and important role for Oct1 in AML.
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9
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Stepchenko AG, Lyanova BM, Krylova ID, Ilyin YV, Georgieva SG, Pankratova EV. Differentiation of Monocytic Cells Is Accompanied by a Change in the Expression of the Set of Oct-1 Isoforms. DOKL BIOCHEM BIOPHYS 2019; 483:306-308. [PMID: 30607726 DOI: 10.1134/s1607672918060066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Indexed: 11/22/2022]
Abstract
Changes in the expression level of Oct-1A, Oct-1L, Oct-1X, and Oct-1Z isoforms and CD14 surface antigen during differentiation of HL-60 monocytic cells induced in vitro by dimethyl sulfoxide were studied, and the expression level of the four Oct-1 isoforms in vivo in human monocytes was determined.
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Affiliation(s)
- A G Stepchenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia
| | - B M Lyanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia
| | - I D Krylova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia. .,Moscow State Pedagogical University, Moscow, 119992, Russia.
| | - Yu V Ilyin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia
| | - S G Georgieva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia
| | - E V Pankratova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 119991, Russia
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10
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D'Andrea A, Gritti I, Nicoli P, Giorgio M, Doni M, Conti A, Bianchi V, Casoli L, Sabò A, Mironov A, Beznoussenko GV, Amati B. The mitochondrial translation machinery as a therapeutic target in Myc-driven lymphomas. Oncotarget 2018; 7:72415-72430. [PMID: 27635472 PMCID: PMC5341918 DOI: 10.18632/oncotarget.11719] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/25/2016] [Indexed: 12/12/2022] Open
Abstract
The oncogenic transcription factor Myc is required for the progression and maintenance of diverse tumors. This has led to the concept that Myc itself, Myc-activated gene products, or associated biological processes might constitute prime targets for cancer therapy. Here, we present an in vivo reverse-genetic screen targeting a set of 241 Myc-activated mRNAs in mouse B-cell lymphomas, unraveling a critical role for the mitochondrial ribosomal protein (MRP) Ptcd3 in tumor maintenance. Other MRP-coding genes were also up regulated in Myc-induced lymphoma, pointing to a coordinate activation of the mitochondrial translation machinery. Inhibition of mitochondrial translation with the antibiotic Tigecycline was synthetic-lethal with Myc activation, impaired respiratory activity and tumor cell survival in vitro, and significantly extended lifespan in lymphoma-bearing mice. We have thus identified a novel Myc-induced metabolic dependency that can be targeted by common antibiotics, opening new therapeutic perspectives in Myc-overexpressing tumors.
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Affiliation(s)
- Aleco D'Andrea
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | - Ilaria Gritti
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.,Present address: IRCCS San Raffaele, Functional Genomics of Cancer Unit, Division of Experimental Oncology, Milan, Italy
| | - Paola Nicoli
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | - Marco Giorgio
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | - Mirko Doni
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | - Annalisa Conti
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy
| | - Valerio Bianchi
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy.,Present address: Hubrecht Institute-KNAW & University Medical Center Utrecht, Uppsalalaan, Utrecht, The Netherlands
| | - Lucia Casoli
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy
| | - Arianna Sabò
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy
| | - Alexandre Mironov
- The Institute of Molecular Oncology of the Italian Foundation for Cancer Research, Milan, Italy
| | - Galina V Beznoussenko
- The Institute of Molecular Oncology of the Italian Foundation for Cancer Research, Milan, Italy
| | - Bruno Amati
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.,Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy
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11
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Vázquez-Arreguín K, Maddox J, Kang J, Park D, Cano RR, Factor RE, Ludwig T, Tantin D. BRCA1 through Its E3 Ligase Activity Regulates the Transcription Factor Oct1 and Carbohydrate Metabolism. Mol Cancer Res 2018; 16:439-452. [PMID: 29330289 DOI: 10.1158/1541-7786.mcr-17-0364] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/17/2017] [Accepted: 11/10/2017] [Indexed: 12/19/2022]
Abstract
The tumor suppressor BRCA1 regulates the DNA damage response (DDR) and other processes that remain incompletely defined. Among these, BRCA1 heterodimerizes with BARD1 to ubiquitylate targets via its N-terminal E3 ligase activity. Here, it is demonstrated that BRCA1 promotes oxidative metabolism by degrading Oct1 (POU2F1), a transcription factor with proglycolytic and tumorigenic effects. BRCA1 E3 ubiquitin ligase mutation skews cells toward a glycolytic metabolic profile while elevating Oct1 protein. CRISPR-mediated Oct1 deletion reverts the glycolytic phenotype. RNA sequencing (RNAseq) confirms deregulation of metabolic genes downstream of Oct1. BRCA1 mediates Oct1 ubiquitylation and degradation, and mutation of two ubiquitylated Oct1 lysines insulates the protein against BRCA1-mediated destabilization. Oct1 deletion in MCF-7 breast cancer cells does not perturb growth in standard culture, but inhibits growth in soft agar and xenograft assays. In primary breast cancer clinical specimens, Oct1 protein levels correlate positively with tumor aggressiveness and inversely with BRCA1. These results identify BRCA1 as an Oct1 ubiquitin ligase that catalyzes Oct1 degradation to promote oxidative metabolism and restrict tumorigenicity. Mol Cancer Res; 16(3); 439-52. ©2018 AACR.
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Affiliation(s)
- Karina Vázquez-Arreguín
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jessica Maddox
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jinsuk Kang
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Dongju Park
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, Ohio State University, Columbus, Ohio
| | - Reuben R Cano
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Rachel E Factor
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Thomas Ludwig
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, Ohio State University, Columbus, Ohio
| | - Dean Tantin
- Department of Pathology and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah.
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12
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Young T, Kesarcodi-Watson A, Alfaro AC, Merien F, Nguyen TV, Mae H, Le DV, Villas-Bôas S. Differential expression of novel metabolic and immunological biomarkers in oysters challenged with a virulent strain of OsHV-1. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 73:229-245. [PMID: 28373065 DOI: 10.1016/j.dci.2017.03.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 03/30/2017] [Accepted: 03/30/2017] [Indexed: 06/07/2023]
Abstract
Early lifestages of the Pacific oyster (Crassostrea gigas) are highly susceptible to infection by OsHV-1 μVar, but little information exists regarding metabolic or pathophysiological responses of larval hosts. Using a metabolomics approach, we identified a range of metabolic and immunological responses in oyster larvae exposed to OsHV-1 μVar; some of which have not previously been reported in molluscs. Multivariate analyses of entire metabolite profiles were able to separate infected from non-infected larvae. Correlation analysis revealed the presence of major perturbations in the underlying biochemical networks and secondary pathway analysis of functionally-related metabolites identified a number of prospective pathways differentially regulated in virus-exposed larvae. These results provide new insights into the pathogenic mechanisms of OsHV-1 infection in oyster larvae, which may be applied to develop disease mitigation strategies and/or as new phenotypic information for selective breeding programmes aiming to enhance viral resistance.
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Affiliation(s)
- Tim Young
- Institute for Applied Ecology New Zealand, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand; Metabolomics Laboratory, School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand
| | | | - Andrea C Alfaro
- Institute for Applied Ecology New Zealand, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
| | - Fabrice Merien
- AUT-Roche Diagnostics Laboratory, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand
| | - Thao V Nguyen
- Institute for Applied Ecology New Zealand, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand
| | - Hannah Mae
- Cawthron Institute, 98 Halifax Street East, Private Bag 2, Nelson 7042, New Zealand
| | - Dung V Le
- Institute for Applied Ecology New Zealand, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand
| | - Silas Villas-Bôas
- Metabolomics Laboratory, School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand
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13
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Shen Z, Kang J, Shakya A, Tabaka M, Jarboe EA, Regev A, Tantin D. Enforcement of developmental lineage specificity by transcription factor Oct1. eLife 2017; 6:20937. [PMID: 28537559 PMCID: PMC5466424 DOI: 10.7554/elife.20937] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 05/23/2017] [Indexed: 12/26/2022] Open
Abstract
Embryonic stem cells co-express Oct4 and Oct1, a related protein with similar DNA-binding specificity. To study the role of Oct1 in ESC pluripotency and transcriptional control, we constructed germline and inducible-conditional Oct1-deficient ESC lines. ESCs lacking Oct1 show normal appearance, self-renewal and growth but manifest defects upon differentiation. They fail to form beating cardiomyocytes, generate neurons poorly, form small, poorly differentiated teratomas, and cannot generate chimeric mice. Upon RA-mediated differentiation, Oct1-deficient cells induce lineage-appropriate developmentally poised genes poorly while lineage-inappropriate genes, including extra-embryonic genes, are aberrantly expressed. In ESCs, Oct1 co-occupies a specific set of targets with Oct4, but does not occupy differentially expressed developmental targets. Instead, Oct1 occupies these targets as cells differentiate and Oct4 declines. These results identify a dynamic interplay between Oct1 and Oct4, in particular during the critical window immediately after loss of pluripotency when cells make the earliest developmental fate decisions. DOI:http://dx.doi.org/10.7554/eLife.20937.001 Humans and most other animals are composed of hundreds of different types of cell, including nerve cells, muscle cells and blood cells. Despite performing many different roles, these cells all develop from a single fertilized egg, which divides to make a particular group of cells that when studied in the laboratory are called embryonic stem cells (or ESCs for short). The ability of a cell to become a different cell type is defined as “potency”. ESCs are unique because they can specialize into any type of cell present in the adult organism, and they are therefore called “pluripotent”. However, as the embryo develops, its ESCs gradually lose their potency, and become more and more specialized. The activity of a great number of genes must be regulated during the transition from pluripotent to specialized cells, and some of the mechanisms involved in this transition are still unclear. ESCs are known to need a gene-regulating protein called Oct4 to remain pluripotent and Shen, Kang, Shakya et al. now show that a similar protein named Oct1 is essential for their transition to becoming more specialized. When the gene for Oct1 was deleted from mouse ECSs, they behaved largely like “normal” ESCs, but could not properly mature into certain cell types such as heart and nerve cells. Molecular analyses revealed that Oct4 and Oct1 compete to regulate the activity of many common genes with opposing outcomes: Oct4 keeps ESCs pluripotent while Oct1 leads them to specialize. The Oct4 protein is abundant in ESCs and prevails over Oct1, but as the cells mature, the levels of Oct4 drop, and Oct1 takes over in the regulation of their common target genes. Going forward, a better understanding of how ESCs become specialized will help basic research in the laboratory and allow scientists to tackle new questions about how the human body develops and how our organs work. In the longer-term, these findings might also have applications in the field of regenerative medicine, which aims to repair or replace a person’s cells, tissues or organs to improve their health. DOI:http://dx.doi.org/10.7554/eLife.20937.002
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Affiliation(s)
- Zuolian Shen
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Jinsuk Kang
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Arvind Shakya
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Marcin Tabaka
- The Broad Institute of MIT and Harvard, Cambridge, United States
| | - Elke A Jarboe
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Aviv Regev
- The Broad Institute of MIT and Harvard, Cambridge, United States.,Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, United States
| | - Dean Tantin
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
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Lee S, Jang WJ, Choi B, Joo SH, Jeong CH. Comparative metabolomic analysis of HPAC cells following the acquisition of erlotinib resistance. Oncol Lett 2017; 13:3437-3444. [PMID: 28529573 PMCID: PMC5431587 DOI: 10.3892/ol.2017.5940] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/17/2017] [Indexed: 12/30/2022] Open
Abstract
Pancreatic cancer is one of the most lethal types of cancer, due to difficulty in early detection and the limited efficacy of available treatments. Erlotinib is used to inhibit the epidermal growth factor receptor for the treatment of pancreatic cancer; however, erlotinib resistance is a major issue and the mechanisms underlying the development of erlotinib resistance remain unclear. To better understand the alterations in tumor metabolism by acquired resistance to erlotinib, an erlotinib-resistant pancreatic cancer cell line (HPAC-ER) was established, followed by a comparison of the metabolic characteristics between these cells and their erlotinib-sensitive parental cells (HPAC). This comparison was accomplished through mass spectrometry-based targeted metabolic profiling. Five metabolite groups (acylcarnitines, amino acids and biogenic amines, glycerophospholipids, sphingolipids and monosaccharides) were semi-quantified and compared statistically. These results revealed significant differences between the two groups of cells. A significant increase in the level of short-chain acylcarnitines and selected lysophosphatidylcholines, and a significant decrease in the level of acyl-alkyl-phosphatidylcholines and one sphingolipid, were observed in the HPAC-ER cells compared with the HPAC cells. The metabolic changes observed in the present study support the theory that there are increased metabolic demands in erlotinib-resistant cancer, reflecting the changes in acetyl-CoA-associated and choline phospholipid metabolism. These findings will aid in elucidating the changes that occur in pancreatic cancer metabolism through the acquired resistance to erlotinib, and in the identification of biomarkers for the early detection of pancreatic cancer.
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Affiliation(s)
- Sooyeun Lee
- College of Pharmacy, Keimyung University, Dalseo, Daegu 42601, Republic of Korea
| | - Won-Jun Jang
- College of Pharmacy, Keimyung University, Dalseo, Daegu 42601, Republic of Korea
| | - Boyeon Choi
- College of Pharmacy, Keimyung University, Dalseo, Daegu 42601, Republic of Korea
| | - Sang Hoon Joo
- Department of Pharmacy, Catholic University of Daegu, Gyeongsan-si, Gyeongbuk 38430, Republic of Korea
| | - Chul-Ho Jeong
- College of Pharmacy, Keimyung University, Dalseo, Daegu 42601, Republic of Korea
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15
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Achreja A, Zhao H, Yang L, Yun TH, Marini J, Nagrath D. Exo-MFA - A 13C metabolic flux analysis framework to dissect tumor microenvironment-secreted exosome contributions towards cancer cell metabolism. Metab Eng 2017; 43:156-172. [PMID: 28087332 DOI: 10.1016/j.ymben.2017.01.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 12/05/2016] [Accepted: 01/05/2017] [Indexed: 02/04/2023]
Abstract
Dissecting the pleiotropic roles of tumor micro-environment (TME) on cancer progression has been brought to the foreground of research on cancer pathology. Extracellular vesicles such as exosomes, transport proteins, lipids, and nucleic acids, to mediate intercellular communication between TME components and have emerged as candidates for anti-cancer therapy. We previously reported that cancer-associated fibroblast (CAF) derived exosomes (CDEs) contain metabolites in their cargo that are utilized by cancer cells for central carbon metabolism and promote cancer growth. However, the metabolic fluxes involved in donor cells towards packaging of metabolites in extracellular vesicles and exosome-mediated metabolite flux upregulation in recipient cells are still not known. Here, we have developed a novel empirical and computational technique, exosome-mediated metabolic flux analysis (Exo-MFA) to quantify flow of cargo from source cells to recipient cells via vesicular transport. Our algorithm, which is based on 13C metabolic flux analysis, successfully predicts packaging fluxes to metabolite cargo in CAFs, dynamic changes in rate of exosome internalization by cancer cells, and flux of cargo release over time. We find that cancer cells internalize exosomes rapidly leading to depletion of extracellular exosomes within 24h. However, metabolite cargo significantly alters intracellular metabolism over the course of 24h by regulating glycolysis pathway fluxes via lactate supply. Furthermore, it can supply up to 35% of the TCA cycle fluxes by providing TCA intermediates and glutamine. Our algorithm will help gain insight into (i) metabolic interactions in multicellular systems (ii) biogenesis of extracellular vesicles and their differential packaging of cargo under changing environments, and (iii) regulation of cancer cell metabolism by its microenvironment.
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Affiliation(s)
- Abhinav Achreja
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, TX 77005, USA; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Hongyun Zhao
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, TX 77005, USA; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lifeng Yang
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, TX 77005, USA; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA
| | - Tae Hyun Yun
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA
| | | | - Deepak Nagrath
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, TX 77005, USA; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA; Department of Bioengineering, Rice University, Houston, TX 77005, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA.
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16
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Ilaiwy A, Quintana MT, Bain JR, Muehlbauer MJ, Brown DI, Stansfield WE, Willis MS. Cessation of biomechanical stretch model of C2C12 cells models myocyte atrophy and anaplerotic changes in metabolism using non-targeted metabolomics analysis. Int J Biochem Cell Biol 2016; 79:80-92. [PMID: 27515590 DOI: 10.1016/j.biocel.2016.08.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/20/2016] [Accepted: 08/07/2016] [Indexed: 12/18/2022]
Abstract
Studies of skeletal muscle disuse, either in patients on bed rest or experimentally in animals (immobilization), have demonstrated that decreased protein synthesis is common, with transient parallel increases in protein degradation. Muscle disuse atrophy involves a process of transition from slow to fast myosin fiber types. A shift toward glycolysis, decreased capacity for fat oxidation, and substrate accumulation in atrophied muscles have been reported, as has accommodation of the liver with an increased gluconeogenic capacity. Recent studies have modeled skeletal muscle disuse by using cyclic stretch of differentiated myotubes (C2C12), which mimics the loading pattern of mature skeletal muscle, followed by cessation of stretch. We utilized this model to determine the metabolic changes using non-targeted metabolomics analysis of the media. We identified increases in amino acids resulting from muscle atrophy-induced protein degradation (largely sarcomere) that occurs with muscle atrophy that are involved in feeding the Kreb's cycle through anaplerosis. Specifically, we identified increased alanine/proline metabolism (significantly elevated proline, alanine, glutamine, and asparagine) and increased α-ketoglutaric acid, the proposed Kreb's cycle intermediate being fed by the alanine/proline metabolic anaplerotic mechanism. Additionally, several unique pathways not clearly delineated in previous studies of muscle unloading were seen, including: (1) elevated keto-acids derived from branched chain amino acids (i.e. 2-ketoleucine and 2-keovaline), which feed into a metabolic pathway supplying acetyl-CoA and 2-hydroxybutyrate (also significantly increased); and (2) elevated guanine, an intermediate of purine metabolism, was seen at 12h unloading. Given the interest in targeting different aspects of the ubiquitin proteasome system to inhibit protein degradation, this C2C12 system may allow the identification of direct and indirect alterations in metabolism due to anaplerosis or through other yet to be identified mechanisms using a non-targeted metabolomics approach.
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Affiliation(s)
- Amro Ilaiwy
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA; Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Megan T Quintana
- Department of Surgery, University of North Carolina, Chapel Hill, NC, USA
| | - James R Bain
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA; Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Michael J Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA
| | - David I Brown
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA
| | | | - Monte S Willis
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA; Department of Pathology & Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA; Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA.
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17
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González Paredes RM, García Pinto C, Pérez Pavón JL, Moreno Cordero B. Derivatization coupled to headspace programmed-temperature vaporizer gas chromatography with mass spectrometry for the determination of amino acids: Application to urine samples. J Sep Sci 2016; 39:3375-83. [DOI: 10.1002/jssc.201600186] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 06/23/2016] [Accepted: 06/24/2016] [Indexed: 01/11/2023]
Affiliation(s)
- Rosa María González Paredes
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas; Universidad de Salamanca; Salamanca Spain
| | - Carmelo García Pinto
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas; Universidad de Salamanca; Salamanca Spain
| | - José Luis Pérez Pavón
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas; Universidad de Salamanca; Salamanca Spain
| | - Bernardo Moreno Cordero
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias Químicas; Universidad de Salamanca; Salamanca Spain
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18
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Vázquez-Arreguín K, Tantin D. The Oct1 transcription factor and epithelial malignancies: Old protein learns new tricks. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1859:792-804. [PMID: 26877236 PMCID: PMC4880489 DOI: 10.1016/j.bbagrm.2016.02.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/06/2016] [Accepted: 02/09/2016] [Indexed: 01/29/2023]
Abstract
The metazoan-specific POU domain transcription factor family comprises activities underpinning developmental processes such as embryonic pluripotency and neuronal specification. Some POU family proteins efficiently bind an 8-bp DNA element known as the octamer motif. These proteins are known as Oct transcription factors. Oct1/POU2F1 is the only widely expressed POU factor. Unlike other POU factors it controls no specific developmental or organ system. Oct1 was originally described to operate at target genes associated with proliferation and immune modulation, but more recent results additionally identify targets associated with oxidative and cytotoxic stress resistance, metabolic regulation, stem cell function and other unexpected processes. Oct1 is pro-oncogenic in multiple contexts, and several recent reports provide broad evidence that Oct1 has prognostic and therapeutic value in multiple epithelial tumor settings. This review focuses on established and emerging roles of Oct1 in epithelial tumors, with an emphasis on mechanisms of transcription regulation by Oct1 that may underpin these findings. This article is part of a Special Issue entitled: The Oct Transcription Factor Family, edited by Dr. Dean Tantin.
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Affiliation(s)
- Karina Vázquez-Arreguín
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Dean Tantin
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.
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19
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Riz I, Hawley TS, Hawley RG. KLF4-SQSTM1/p62-associated prosurvival autophagy contributes to carfilzomib resistance in multiple myeloma models. Oncotarget 2016; 6:14814-31. [PMID: 26109433 PMCID: PMC4558117 DOI: 10.18632/oncotarget.4530] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 05/22/2015] [Indexed: 11/25/2022] Open
Abstract
Multiple myeloma (MM) is an incurable clonal plasma cell malignancy. Because of a high rate of immunoglobulin synthesis, the endoplasmic reticulum of MM cells is subjected to elevated basal levels of stress. Consequently, proteasome inhibitors, which exacerbate this stress by inhibiting ubiquitin-proteasome-mediated protein degradation, are an important new class of chemotherapeutic agents being used to combat this disease. However, MM cells still develop resistance to proteasome inhibitors such as carfilzomib. Toward this end, we have established carfilzomib-resistant derivatives of MM cell lines. We found that resistance to carfilzomib was associated with elevated levels of prosurvival autophagy, and Kruppel-like factor 4 (KLF4) was identified as a contributing factor. Expression levels as well as nuclear localization of KLF4 protein were elevated in MM cells with acquired carfilzomib resistance. Chromatin immunoprecipitations indicated that endogenous KLF4 bound to the promoter regions of the SQSTM1 gene encoding the ubiquitin-binding adaptor protein sequestosome/p62 that links the proteasomal and autophagic protein degradation pathways. Ectopic expression of KLF4 induced upregulation of SQSTM1. On the other hand, inhibitors of autophagy sensitized MM cells to carfilzomib, even in carfilzomib-resistant derivatives having increased expression of the multidrug resistance protein P-glycoprotein. Thus, we report here a novel function for KLF4, one of the Yamanaka reprogramming factors, as being a contributor to autophagy gene expression which moderates preclinical proteasome inhibitor efficacy in MM.
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Affiliation(s)
- Irene Riz
- Department of Anatomy and Regenerative Biology, The George Washington University, Washington, DC, USA
| | - Teresa S Hawley
- Flow Cytometry Core Facility, The George Washington University, Washington, DC, USA
| | - Robert G Hawley
- Department of Anatomy and Regenerative Biology, The George Washington University, Washington, DC, USA
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20
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Park CS, Shen Y, Lewis A, Lacorazza HD. Role of the reprogramming factor KLF4 in blood formation. J Leukoc Biol 2016; 99:673-85. [DOI: 10.1189/jlb.1ru1215-539r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 01/22/2016] [Indexed: 12/31/2022] Open
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21
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Notas G, Pelekanou V, Kampa M, Alexakis K, Sfakianakis S, Laliotis A, Askoxilakis J, Tsentelierou E, Tzardi M, Tsapis A, Castanas E. Tamoxifen induces a pluripotency signature in breast cancer cells and human tumors. Mol Oncol 2015; 9:1744-59. [PMID: 26115764 DOI: 10.1016/j.molonc.2015.05.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 05/20/2015] [Indexed: 01/01/2023] Open
Abstract
Tamoxifen is the treatment of choice in estrogen receptor alpha breast cancer patients that are eligible for adjuvant endocrine therapy. However, ∼50% of ERα-positive tumors exhibit intrinsic or rapidly acquire resistance to endocrine treatment. Unfortunately, prediction of de novo resistance to endocrine therapy and/or assessment of relapse likelihood remain difficult. While several mechanisms regulating the acquisition and the maintenance of endocrine resistance have been reported, there are several aspects of this phenomenon that need to be further elucidated. Altered metabolic fate of tamoxifen within patients and emergence of tamoxifen-resistant clones, driven by evolution of the disease phenotype during treatment, appear as the most compelling hypotheses so far. In addition, tamoxifen was reported to induce pluripotency in breast cancer cell lines, in vitro. In this context, we have performed a whole transcriptome analysis of an ERα-positive (T47D) and a triple-negative breast cancer cell line (MDA-MB-231), exposed to tamoxifen for a short time frame (hours), in order to identify how early pluripotency-related effects of tamoxifen may occur. Our ultimate goal was to identify whether the transcriptional actions of tamoxifen related to induction of pluripotency are mediated through specific ER-dependent or independent mechanisms. We report that even as early as 3 hours after the exposure of breast cancer cells to tamoxifen, a subset of ERα-dependent genes associated with developmental processes and pluripotency are induced and this is accompanied by specific phenotypic changes (expression of pluripotency-related proteins). Furthermore we report an association between the increased expression of pluripotency-related genes in ERα-positive breast cancer tissues samples and disease relapse after tamoxifen therapy. Finally we describe that in a small group of ERα-positive breast cancer patients, with disease relapse after surgery and tamoxifen treatment, ALDH1A1 (a marker of pluripotency in epithelial cancers which is absent in normal breast tissue) is increased in relapsing tumors, with a concurrent modification of its intra-cellular localization. Our data could be of value in the discrimination of patients susceptible to develop tamoxifen resistance and in the selection of optimized patient-tailored therapies.
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Affiliation(s)
- George Notas
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece; Institute of Applied Computational Mathematics, Foundation of Research and Technology (FORTH), Heraklion, Greece.
| | - Vassiliki Pelekanou
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece; Laboratories of Pathology, University of Crete School of Medicine, Heraklion, Greece
| | - Marilena Kampa
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece
| | - Konstantinos Alexakis
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece
| | - Stelios Sfakianakis
- Institute of Computer Science, Foundation of Research and Technology (FORTH), Heraklion, Greece
| | - Aggelos Laliotis
- Department of Surgical Oncology, University Hospital, Heraklion, Greece
| | - John Askoxilakis
- Department of Surgical Oncology, University Hospital, Heraklion, Greece
| | | | - Maria Tzardi
- Laboratories of Pathology, University of Crete School of Medicine, Heraklion, Greece
| | - Andreas Tsapis
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece; INSERM U976, Hôpital Saint Louis, Paris, France; University Paris Diderot, Paris, France
| | - Elias Castanas
- Laboratories of Experimental Endocrinology, University of Crete School of Medicine, Heraklion, Greece.
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Tatara MR, Krupski W, Szpetnar M, Dąbrowski A, Bury P, Szabelska A, Charuta A, Boguszewska-Czubara A, Maciejewski R, Wallner G. Effects of total gastrectomy on plasma silicon and amino acid concentrations in men. Exp Biol Med (Maywood) 2015; 240:1557-63. [PMID: 26041388 DOI: 10.1177/1535370215588925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 05/01/2015] [Indexed: 12/18/2022] Open
Abstract
The aim of the study was to determine one-year effects of total gastrectomy on plasma silicon and free amino acid concentrations in patients and evaluate changes of volumetric bone mineral density (vBMD) in lumbar spine. Eight patients were enrolled to the control (CTR) group. Six patients subjected to total gastrectomy (GX group) were included to the experimental group. vBMD in trabecular and cortical bone was measured in lumbar vertebrae at baseline (before surgery) and one year later using quantitative computed tomography. Plasma concentrations of silicon and free amino acids were determined at baseline and one year later using photometric method and ion-exchange chromatography. Body weights within CTR and GX groups were not different after one-year follow-up when compared to the baseline values (P > 0.05). An average annual decrease of vBMD in the trabecular bone in the gastrectomized patients reached 15.0% in lumbar spine and was significantly different in comparison to the percentage changes observed in CTR group (P = 0.02). One-year percentage change of vBMD in the cortical bone in L1 and L2 has shown significantly decreased values by 10.5 and 9.1% in the GX group when compared to the percentage change observed in the controls (P < 0.05). Plasma concentration of adipic acid was significantly higher by 101.6% one year after total gastrectomy procedure in the patients when compared to the baseline value (P = 0.01). Plasma concentration of silicon was significantly lowered by 26.7% one year after the total gastrectomy when compared to the baseline value (P = 0.009). Total gastrectomy in patients has induced severe osteoporotic changes in lumbar spine within one-year period. The observed osteoporotic changes were associated with decreased plasma concentration of silicon indicating importance of exocrine and endocrine functions of stomach for silicon homeostasis maintenance. Gastrectomy-induced bone loss was not related to decreased amino acid concentration in plasma obtained from overnight fasted patients.
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Affiliation(s)
- Marcin R Tatara
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, 20-950 Lublin, Poland II Department of Radiology, Medical University of Lublin, 20-081 Lublin, Poland
| | - Witold Krupski
- II Department of Radiology, Medical University of Lublin, 20-081 Lublin, Poland
| | - Maria Szpetnar
- Department of Medical Chemistry, Medical University in Lublin, 20-093 Lublin, Poland
| | - Andrzej Dąbrowski
- II Department of General and Gastroenterological Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, 20-081 Lublin, Poland
| | - Paweł Bury
- II Department of General and Gastroenterological Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, 20-081 Lublin, Poland
| | - Anna Szabelska
- Department of Prosthetic Dentistry, Medical University in Lublin, 20-081 Lublin, Poland
| | - Anna Charuta
- Vertebrates Morphology Department, Department of Zoology, Institute of Biology, Siedlce University of Natural Sciences and Humanities, 08-110 Siedlce, Poland
| | | | - Ryszard Maciejewski
- Human Anatomy Department, Medical University in Lublin, 20-090 Lublin, Poland
| | - Grzegorz Wallner
- II Department of General and Gastroenterological Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, 20-081 Lublin, Poland
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Yang P, Li X, Ni J, Tian J, Jing F, Qu C, Lin L, Zhang H. Alterations of amino Acid level in depressed rat brain. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2014; 18:371-6. [PMID: 25352755 PMCID: PMC4211119 DOI: 10.4196/kjpp.2014.18.5.371] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 08/18/2014] [Accepted: 08/25/2014] [Indexed: 11/30/2022]
Abstract
Amino-acid neurotransmitter system dysfunction plays a major role in the pathophysiology of depression. Several studies have demonstrated the potential of amino acids as a source of neuro-specific biomarkers could be used in future diagnosis of depression. Only partial amino acids such as glycine and asparagine were determined from certain parts of rats' brain included hippocampi and cerebral cortex in previous studies. However, according to systematic biology, amino acids in different area of brain are interacted and interrelated. Hence, the determination of 34 amino acids through entire rats' brain was conducted in this study in order to demonstrate more possibilities for biomarkers of depression by discovering other potential amino acids in more areas of rats' brain. As a result, 4 amino acids (L-aspartic acid, L-glutamine, taurine and γ-amino-n-butyric acid) among 34 were typically identified as potentially primary biomarkers of depression by data statistics. Meanwhile, an antidepressant called Fluoxetine was employed to verify other potential amino acids which were not identified by data statistics. Eventually, we found L-α-amino-adipic acid could also become a new potentially secondary biomarker of depression after drug validation. In conclusion, we suggested that L-aspartic acid, L-glutamine, taurine, γ-amino-n-butyric acid and L-α-amino-adipic acid might become potential biomarkers for future diagnosis of depression and development of antidepressant.
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Affiliation(s)
- Pei Yang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Xuechun Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Jian Ni
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Jingchen Tian
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Fu Jing
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Changhai Qu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Longfei Lin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
| | - Hui Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, P.R. China 100029
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24
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Nishikawa T, Bellance N, Damm A, Bing H, Zhu Z, Handa K, Yovchev MI, Sehgal V, Moss TJ, Oertel M, Ram PT, Pipinos II, Soto-Gutierrez A, Fox IJ, Nagrath D. A switch in the source of ATP production and a loss in capacity to perform glycolysis are hallmarks of hepatocyte failure in advance liver disease. J Hepatol 2014; 60:1203-11. [PMID: 24583248 PMCID: PMC4028384 DOI: 10.1016/j.jhep.2014.02.014] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 02/10/2014] [Accepted: 02/16/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS The cause of hepatic failure in the terminal stages of chronic injury is unknown. Cellular metabolic adaptations in response to the microenvironment have been implicated in cellular breakdown. METHODS To address the role of energy metabolism in this process we studied mitochondrial number, respiration, and functional reserve, as well as cellular adenosine-5'-triphosphate (ATP) production, glycolytic flux, and expression of glycolysis related genes in isolated hepatocytes from early and terminal stages of cirrhosis using a model that produces hepatic failure from irreversible cirrhosis in rats. To study the clinical relevance of energy metabolism in terminal stages of chronic liver failure, we analyzed glycolysis and energy metabolism related gene expression in liver tissue from patients at different stages of chronic liver failure according to Child-Pugh classification. Additionally, to determine whether the expression of these genes in early-stage cirrhosis (Child-Pugh Class A) is related to patient outcome, we performed network analysis of publicly available microarray data obtained from biopsies of 216 patients with hepatitis C-related Child-Pugh A cirrhosis who were prospectively followed up for a median of 10years. RESULTS In the early phase of cirrhosis, mitochondrial function and ATP generation are maintained by increasing energy production from glycolytic flux as production from oxidative phosphorylation falls. At the terminal stage of hepatic injury, mitochondria respiration and ATP production are significantly compromised, as the hepatocytes are unable to sustain the increased demand for high levels of ATP generation from glycolysis. This impairment corresponds to a decrease in glucose-6-phosphatase catalytic subunit and phosphoglucomutase 1. Similar decreased gene expression was observed in liver tissue from patients at different stages of chronic liver injury. Further, unbiased network analysis of microarray data revealed that expression of these genes was down regulated in the group of patients with poor outcome. CONCLUSIONS An adaptive metabolic shift, from generating energy predominantly from oxidative phosphorylation to glycolysis, allows maintenance of energy homeostasis during early stages of liver injury, but leads to hepatocyte dysfunction during terminal stages of chronic liver disease because hepatocytes are unable to sustain high levels of energy production from glycolysis.
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Affiliation(s)
- Taichiro Nishikawa
- Center for Innovative Regenerative Therapies, Department of Surgery, Transplantation Section, Children's Hospital of Pittsburgh, USA; Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Nadège Bellance
- Laboratory for Systems Biology of Human Diseases, Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Aaron Damm
- Laboratory for Systems Biology of Human Diseases, Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Han Bing
- Center for Innovative Regenerative Therapies, Department of Surgery, Transplantation Section, Children's Hospital of Pittsburgh, USA
| | - Zhen Zhu
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kan Handa
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mladen I Yovchev
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Vasudha Sehgal
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tyler J Moss
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Michael Oertel
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Prahlad T Ram
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Iraklis I Pipinos
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA
| | - Alejandro Soto-Gutierrez
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA; McGowan Institute for Regenerative Medicine and Thomas E Starzl Transplant Institute, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Ira J Fox
- Center for Innovative Regenerative Therapies, Department of Surgery, Transplantation Section, Children's Hospital of Pittsburgh, USA; McGowan Institute for Regenerative Medicine and Thomas E Starzl Transplant Institute, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Deepak Nagrath
- Laboratory for Systems Biology of Human Diseases, Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA; Department of Bioengineering, Rice University, Houston, TX, USA.
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25
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Abstract
Mitochondria, the powerhouses of the cell, face two imperatives concerning biogenesis. The first is the requirement for dividing cells to replicate their mitochondrial content by growth of existing mitochondria. The second is the dynamic regulation of mitochondrial content in response to organismal and cellular cues (e.g., exercise, caloric restriction, energy status, temperature). MYC provides the clearest example of a programmed expansion of mitochondrial content linked to the cell cycle. As an oncogene, MYC also presents intriguing questions about the role of its mitochondrial targets in cancer-related phenotypes, such as the Warburg effect and MYC-dependent apoptosis.
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Affiliation(s)
- Fionnuala Morrish
- Division of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109
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26
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Armitage EG, Barbas C. Metabolomics in cancer biomarker discovery: current trends and future perspectives. J Pharm Biomed Anal 2013; 87:1-11. [PMID: 24091079 DOI: 10.1016/j.jpba.2013.08.041] [Citation(s) in RCA: 234] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 08/21/2013] [Accepted: 08/23/2013] [Indexed: 12/19/2022]
Abstract
Cancer is one of the most devastating human diseases that causes a vast number of mortalities worldwide each year. Cancer research is one of the largest fields in the life sciences and despite many astounding breakthroughs and contributions over the past few decades, there is still a considerable amount to unveil on the function of cancer. It is well known that cancer metabolism differs from that of normal tissue and an important hypothesis published in the 1950s by Otto Warburg proposed that cancer cells rely on anaerobic metabolism as the source for energy, even under physiological oxygen levels. Following this, cancer central carbon metabolism has been researched extensively and beyond respiration, cancer has been found to involve a wide range of metabolic processes, and many more are still to be unveiled. Studying cancer through metabolomics could reveal new biomarkers for cancer that could be useful for its future prognosis, diagnosis and therapy. Metabolomics is becoming an increasingly popular tool in the life sciences since it is a relatively fast and accurate technique that can be applied with either a particular focus or in a global manner to reveal new knowledge about biological systems. There have been many examples of its application to reveal potential biomarkers in different cancers that have employed a range of different analytical platforms. In this review, approaches in metabolomics that have been employed in cancer biomarker discovery are discussed and some of the most noteworthy research in the field is highlighted.
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Affiliation(s)
- Emily G Armitage
- Centre for Metabolomics and Bioanalysis (CEMBIO), Faculty of Pharmacy, Universidad San Pablo CEU, Campus Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
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27
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Teng L, Tang YB, Sun F, An SM, Zhang C, Yang XJ, Lv HY, Lu Q, Cui YY, Hu JJ, Zhu L, Chen HZ. Non-neuronal release of gamma-aminobutyric Acid by embryonic pluripotent stem cells. Stem Cells Dev 2013; 22:2944-53. [PMID: 23799822 DOI: 10.1089/scd.2013.0243] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
γ-Aminobutyric acid (GABA), the principle inhibitory transmitter in the mature central nervous system, is also involved in activities outside the nervous system. Recent studies have shown that functional GABA receptors are expressed in embryonic stem (ES) cells and these receptors control ES cell proliferation. However, it is not clear whether ES cells have their own GABAergic transmission output machinery that can fulfill GABA release or whether the cells merely process the GABA receptors by receiving and responding to the diffused GABA released elsewhere. To get further insight into this unresolved problem, we detected the repertoire of components for GABA synthesis, storage, reaction, and termination in ES and embryonal carcinoma stem cells by biological assays, and then directly quantified released GABA in the intercellular milieu from these pluripotent stem (PS) cells by an analytical chemical assay based on high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS). We found that embryonic PS cells processed a GABAergic circuit machinery and spontaneously released GABA, which suggests the potential that embryonic PS cells could autonomously establish a GABA niche via release of the transmitter.
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Affiliation(s)
- Lin Teng
- 1 Department of Pharmacology and Chemical Biology, Shanghai Jiao Tong University School of Medicine , Shanghai, China
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28
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Jung K, Reszka R, Kamlage B, Bethan B, Stephan C, Lein M, Kristiansen G. Tissue metabolite profiling identifies differentiating and prognostic biomarkers for prostate carcinoma. Int J Cancer 2013; 133:2914-24. [PMID: 23737455 DOI: 10.1002/ijc.28303] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 04/22/2013] [Indexed: 12/17/2022]
Abstract
Metabolomic research offers a deeper insight into biochemical changes in cancer metabolism and is a promising tool for identifying novel biomarkers. We aimed to evaluate the diagnostic and prognostic potential of metabolites in prostate cancer (PCa) tissue after radical prostatectomy. In matched malignant and nonmalignant prostatectomy samples from 95 PCa patients, aminoadipic acid, cerebronic acid, gluconic acid, glycerophosphoethanolamine, 2-hydroxybehenic acid, isopentenyl pyrophosphate, maltotriose, 7-methylguanine and tricosanoic acid were determined within a global metabolite profiling study using gas chromatography/liquid chromatography-mass spectrometry. The data were related to clinicopathological variables like prostate volume, tumor stage, Gleason score, preoperative prostate-specific antigen and disease recurrence in the follow-up. All nine metabolites showed higher concentrations in malignant than in nonmalignant samples except for gluconic acid and maltotriose, which had lower levels in tumors. Receiver -operating characteristics analysis demonstrated a significant discrimination for all metabolites between malignant and nonmalignant tissue with a maximal area under the curve of 0.86 for tricosanoic acid, whereas no correlation was observed between the metabolite levels and the Gleason score or tumor stage except for gluconic acid. Univariate Cox regression and Kaplan-Meier analyses showed that levels of aminoadipic acid, gluconic acid and maltotriose were associated with the biochemical tumor recurrence (prostate-specific antigen > 0.2 ng/mL). In multivariate Cox regression analyses, aminoadipic acid together with tumor stage and Gleason score remained in a model as independent marker for prediction of biochemical recurrence. This study proved that metabolites in PCa tissue can be used, in combination with traditional clinicopathological factors, as promising diagnostic and prognostic tools.
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Affiliation(s)
- Klaus Jung
- Department of Urology, University Hospital Charité, Schumannstraß 20/21, 10117 Berlin, Germany; Berlin Institute for Urologic Research, Schumannstraße 20/21, 10117 Berlin, Germany
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29
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Kaambre T, Chekulayev V, Shevchuk I, Tepp K, Timohhina N, Varikmaa M, Bagur R, Klepinin A, Anmann T, Koit A, Kaldma A, Guzun R, Valvere V, Saks V. Metabolic control analysis of respiration in human cancer tissue. Front Physiol 2013; 4:151. [PMID: 23825460 PMCID: PMC3695383 DOI: 10.3389/fphys.2013.00151] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 06/05/2013] [Indexed: 01/06/2023] Open
Abstract
Bioenergetic profiling of cancer cells is of great potential because it can bring forward new and effective therapeutic strategies along with early diagnosis. Metabolic Control Analysis (MCA) is a methodology that enables quantification of the flux control exerted by different enzymatic steps in a metabolic network thus assessing their contribution to the system‘s function. Our main goal is to demonstrate the applicability of MCA for in situ studies of energy metabolism in human breast and colorectal cancer cells as well as in normal tissues. We seek to determine the metabolic conditions leading to energy flux redirection in cancer cells. A main result obtained is that the adenine nucleotide translocator exhibits the highest control of respiration in human breast cancer thus becoming a prospective therapeutic target. Additionally, we present evidence suggesting the existence of mitochondrial respiratory supercomplexes that may represent a way by which cancer cells avoid apoptosis. The data obtained show that MCA applied in situ can be insightful in cancer cell energetic research.
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Affiliation(s)
- Tuuli Kaambre
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics Tallinn, Estonia
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30
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Caneba CA, Bellance N, Yang L, Pabst L, Nagrath D. Pyruvate uptake is increased in highly invasive ovarian cancer cells under anoikis conditions for anaplerosis, mitochondrial function, and migration. Am J Physiol Endocrinol Metab 2012; 303:E1036-52. [PMID: 22895781 DOI: 10.1152/ajpendo.00151.2012] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Anoikis resistance, or the ability for cells to live detached from the extracellular matrix, is a property of epithelial cancers. The "Warburg effect," or the preference of cancer cells for glycolysis for their energy production even in the presence of oxygen, has been shown to be evident in various tumors. Since a cancer cell's metastatic ability depends on microenvironmental conditions (nutrients, stromal cells, and vascularization) and is highly variable for different organs, their cellular metabolic fluxes and nutrient demand may show considerable differences. Moreover, a cancer cell's metastatic ability, which is dependent on the stage of cancer, may further create metabolic alterations depending on its microenvironment. Although recent studies have aimed to elucidate cancer cell metabolism under detached conditions, the nutrient demand and metabolic activity of cancer cells under nonadherent conditions remain poorly understood. Additionally, less is known about metabolic alterations in ovarian cancer cells with varying invasive capability under anoikis conditions. We hypothesized that the metabolism of highly invasive ovarian cancer cells in detachment would differ from less invasive ovarian cancer cells and that ovarian cancer cells will have altered metabolism in detached vs. attached conditions. To assess these metabolic differences, we integrated a secretomics-based metabolic footprinting (MFP) approach with mitochondrial bioenergetics. Interestingly, MFP revealed higher pyruvate uptake and oxygen consumption in more invasive ovarian cancer cells than their less invasive counterparts. Furthermore, ATP production was higher in more invasive vs. less invasive ovarian cancer cells in detachment. We found that pyruvate has an effect on highly invasive ovarian cancer cells' migration ability. Our results are the first to demonstrate that higher mitochondrial activity is related to higher ovarian cancer invasiveness under detached conditions. Importantly, our results bring insights regarding the metabolism of cancer cells under nonadherent conditions and could lead to the development of therapies for modulating cancer cell invasiveness.
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Affiliation(s)
- Christine A Caneba
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, Texas 77251-1892, USA
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