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Palandra J, Psychogios N, Neubert H. Application of Immunoaffinity Mass Spectrometry (IA-MS) for Protein Biomarker Quantification. Methods Mol Biol 2022; 2466:111-119. [PMID: 35585314 DOI: 10.1007/978-1-0716-2176-9_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Immunoaffinity mass spectrometry (IA-MS) is a powerful analytical technique for the determination of protein biomarkers with high sensitivity and unparalleled specificity. Typically, the protein antigen of interest is captured from biofluids and tissue lysates using an antibody prior to mass spectrometric analysis. Here we describe the specific steps of the protein immunoaffinity component of the IA-MS workflow that is applicable to most protein antigens.
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Affiliation(s)
- Joe Palandra
- Pfizer Worldwide Research Development and Medical, Andover, MA, USA.
| | | | - Hendrik Neubert
- Pfizer Worldwide Research Development and Medical, Andover, MA, USA
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2
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Bandyopadhaya A, Constantinou C, Psychogios N, Ueki R, Yasuhara S, Martyn JAJ, Wilhelmy J, Mindrinos M, Rahme LG, Tzika AA. Bacterial-excreted small volatile molecule 2-aminoacetophenone induces oxidative stress and apoptosis in murine skeletal muscle. Int J Mol Med 2016; 37:867-78. [PMID: 26935176 PMCID: PMC4790710 DOI: 10.3892/ijmm.2016.2487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/04/2015] [Indexed: 12/18/2022] Open
Abstract
Oxidative stress induces mitochondrial dysfunction and facilitates apoptosis, tissue damage or metabolic alterations following infection. We have previously discovered that the Pseudomonas aeruginosa (PA) quorum sensing (QS)-excreted small volatile molecule, 2-aminoacetophenone (2-AA), which is produced in infected human tissue, promotes bacterial phenotypes that favor chronic infection, while also compromising muscle function and dampens the pathogen-induced innate immune response, promoting host tolerance to infection. In this study, murine whole-genome expression data have demonstrated that 2-AA affects the expression of genes involved in reactive oxygen species (ROS) homeostasis, thus producing an oxidative stress signature in skeletal muscle. The results of the present study demonstrated that the expression levels of genes involved in apoptosis signaling pathways were upregulated in the skeletal muscle of 2-AA-treated mice. To confirm the results of our transcriptome analysis, we used a novel high-resolution magic-angle-spinning (HRMAS), proton (1H) nuclear magnetic resonance (NMR) method and observed increased levels of bisallylic methylene fatty acyl protons and vinyl protons, suggesting that 2-AA induces skeletal muscle cell apoptosis. This effect was corroborated by our results demonstrating the downregulation of mitochondrial membrane potential in vivo in response to 2-AA. The findings of the present study indicate that the bacterial infochemical, 2-AA, disrupts mitochondrial functions by inducing oxidative stress and apoptosis signaling and likely promotes skeletal muscle dysfunction, which may favor chronic/persistent infection.
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Affiliation(s)
- Arunava Bandyopadhaya
- Department of Surgery, Microbiology and Immunobiology, Harvard Medical School and Molecular Surgery Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General and Shriners Burns Hospitals, Harvard Medical School, Boston, MA 02114, USA
| | - Caterina Constantinou
- Department of Surgery, Microbiology and Immunobiology, Harvard Medical School and Molecular Surgery Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General and Shriners Burns Hospitals, Harvard Medical School, Boston, MA 02114, USA
| | - Nikolaos Psychogios
- NMR Surgical Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General and Shriners Burns Hospitals, Harvard Medical School, Boston, MA 02114, USA
| | - Ryusuke Ueki
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Shingo Yasuhara
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - J A Jeevendra Martyn
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Julie Wilhelmy
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michael Mindrinos
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Laurence G Rahme
- Department of Surgery, Microbiology and Immunobiology, Harvard Medical School and Molecular Surgery Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General and Shriners Burns Hospitals, Harvard Medical School, Boston, MA 02114, USA
| | - A Aria Tzika
- NMR Surgical Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General and Shriners Burns Hospitals, Harvard Medical School, Boston, MA 02114, USA
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Constantinou C, Apidianakis Y, Psychogios N, Righi V, Mindrinos MN, Khan N, Swartz HM, Szeto HH, Tompkins RG, Rahme LG, Tzika AA. In vivo high-resolution magic angle spinning magnetic and electron paramagnetic resonance spectroscopic analysis of mitochondria-targeted peptide in Drosophila melanogaster with trauma-induced thoracic injury. Int J Mol Med 2015; 37:299-308. [PMID: 26648055 PMCID: PMC4716799 DOI: 10.3892/ijmm.2015.2426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 10/29/2015] [Indexed: 01/01/2023] Open
Abstract
Trauma is the most common cause of mortality among individuals aged between 1 and 44 years and the third leading cause of mortality overall in the US. In this study, we examined the effects of trauma on the expression of genes in Drosophila melanogaster, a useful model for investigating genetics and physiology. After trauma was induced by a non-lethal needle puncture of the thorax, we observed the differential expression of genes encoding for mitochondrial uncoupling proteins, as well as those encoding for apoptosis-related and insulin signaling-related proteins, thus indicating muscle functional dysregulation. These results prompted us to examine the link between insulin signaling and mitochondrial dysfunction using in vivo nuclear magnetic resonance (NMR) with complementary electron paramagnetic resonance (EPR) spectroscopy. Trauma significantly increased insulin resistance biomarkers, and the NMR spectral profile of the aged flies with trauma-induced thoracic injury resembled that of insulin-resistant chico mutant flies. In addition, the mitochondrial redox status, as measured by EPR, was significantly altered following trauma, indicating mitochondrial uncoupling. A mitochondria-targeted compound, Szeto-Schiller (SS)-31 that promotes adenosine triphosphate (ATP) synthesis normalized the NMR spectral profile, as well as the mitochondrial redox status of the flies with trauma-induced thoracic injury, as assessed by EPR. Based on these findings, we propose a molecular mechanism responsible for trauma-related mortality and also propose that trauma sequelae in aging are linked to insulin signaling and mitochondrial dysfunction. Our findings further suggest that SS-31 attenuates trauma-associated pathological changes.
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Affiliation(s)
- Caterina Constantinou
- NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
| | - Yiorgos Apidianakis
- Molecular Surgery Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
| | - Nikolaos Psychogios
- NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
| | - Valeria Righi
- NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
| | - Michael N Mindrinos
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA, USA
| | - Nadeem Khan
- EPR Center for Viable Systems, Department of Diagnostic Radiology, The Geisel School of Medicine, Lebanon, NH, USA
| | - Harold M Swartz
- EPR Center for Viable Systems, Department of Diagnostic Radiology, The Geisel School of Medicine, Lebanon, NH, USA
| | - Hazel H Szeto
- Department of Pharmacology, Joan and Sanford I. Weill Medical College of Cornell University, New York, NY, USA
| | - Ronald G Tompkins
- Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Laurence G Rahme
- Molecular Surgery Laboratory, Center for Surgery, Innovation and Bioengineering, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
| | - A Aria Tzika
- NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burns Institute, Harvard Medical School, Boston, MA, USA
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Hui ST, Parks BW, Org E, Norheim F, Che N, Pan C, Castellani LW, Charugundla S, Dirks DL, Psychogios N, Neuhaus I, Gerszten RE, Kirchgessner T, Gargalovic PS, Lusis AJ. The genetic architecture of NAFLD among inbred strains of mice. eLife 2015; 4:e05607. [PMID: 26067236 PMCID: PMC4493743 DOI: 10.7554/elife.05607] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 06/11/2015] [Indexed: 02/06/2023] Open
Abstract
To identify genetic and environmental factors contributing to the pathogenesis of non-alcoholic fatty liver disease, we examined liver steatosis and related clinical and molecular traits in more than 100 unique inbred mouse strains, which were fed a diet rich in fat and carbohydrates. A >30-fold variation in hepatic TG accumulation was observed among the strains. Genome-wide association studies revealed three loci associated with hepatic TG accumulation. Utilizing transcriptomic data from the liver and adipose tissue, we identified several high-confidence candidate genes for hepatic steatosis, including Gde1, a glycerophosphodiester phosphodiesterase not previously implicated in triglyceride metabolism. We confirmed the role of Gde1 by in vivo hepatic over-expression and shRNA knockdown studies. We hypothesize that Gde1 expression increases TG production by contributing to the production of glycerol-3-phosphate. Our multi-level data, including transcript levels, metabolite levels, and gut microbiota composition, provide a framework for understanding genetic and environmental interactions underlying hepatic steatosis.
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Affiliation(s)
- Simon T Hui
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Brian W Parks
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Elin Org
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Frode Norheim
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Nam Che
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Calvin Pan
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Lawrence W Castellani
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Sarada Charugundla
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Darwin L Dirks
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
| | - Nikolaos Psychogios
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, United States
| | - Isaac Neuhaus
- Department of Computational Genomics, Bristol-Myers Squibb, Princeton, United States
| | - Robert E Gerszten
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, United States
| | - Todd Kirchgessner
- Department of Cardiovascular Drug Discovery, Bristol-Myers Squibb, Princeton, United States
| | - Peter S Gargalovic
- Department of Computational Genomics, Bristol-Myers Squibb, Princeton, United States
| | - Aldons J Lusis
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, United States
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Kostara CE, Papathanasiou A, Psychogios N, Cung MT, Elisaf MS, Goudevenos J, Bairaktari ET. NMR-Based Lipidomic Analysis of Blood Lipoproteins Differentiates the Progression of Coronary Heart Disease. J Proteome Res 2014; 13:2585-98. [DOI: 10.1021/pr500061n] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | | | | | - Manh Thong Cung
- Laboratoire
de Chimie-Physique Macromoléculaire, UMR 7568 CNRS-INPL, Nancy-Université, 1 Rue Grandville, B.P. 20451, 54001 Nancy Cedex, France
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Tzika AA, Constantinou C, Bandyopadhaya A, Psychogios N, Lee S, Mindrinos M, Martyn JAJ, Tompkins RG, Rahme LG. A small volatile bacterial molecule triggers mitochondrial dysfunction in murine skeletal muscle. PLoS One 2013; 8:e74528. [PMID: 24098655 PMCID: PMC3787027 DOI: 10.1371/journal.pone.0074528] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 08/03/2013] [Indexed: 01/06/2023] Open
Abstract
Mitochondria integrate distinct signals that reflect specific threats to the host, including infection, tissue damage, and metabolic dysfunction; and play a key role in insulin resistance. We have found that the Pseudomonas aeruginosa quorum sensing infochemical, 2-amino acetophenone (2-AA), produced during acute and chronic infection in human tissues, including in the lungs of cystic fibrosis (CF) patients, acts as an interkingdom immunomodulatory signal that facilitates pathogen persistence, and host tolerance to infection. Transcriptome results have led to the hypothesis that 2-AA causes further harm to the host by triggering mitochondrial dysfunction in skeletal muscle. As normal skeletal muscle function is essential to survival, and is compromised in many chronic illnesses, including infections and CF-associated muscle wasting, we here determine the global effects of 2-AA on skeletal muscle using high-resolution magic-angle-spinning (HRMAS), proton (1H) nuclear magnetic resonance (NMR) metabolomics, in vivo31P NMR, whole-genome expression analysis and functional studies. Our results show that 2-AA when injected into mice, induced a biological signature of insulin resistance as determined by 1H NMR analysis-, and dramatically altered insulin signaling, glucose transport, and mitochondrial function. Genes including Glut4, IRS1, PPAR-γ, PGC1 and Sirt1 were downregulated, whereas uncoupling protein UCP3 was up-regulated, in accordance with mitochondrial dysfunction. Although 2-AA did not alter high-energy phosphates or pH by in vivo31P NMR analysis, it significantly reduced the rate of ATP synthesis. This affect was corroborated by results demonstrating down-regulation of the expression of genes involved in energy production and muscle function, and was further validated by muscle function studies. Together, these results further demonstrate that 2-AA, acts as a mediator of interkingdom modulation, and likely effects insulin resistance associated with a molecular signature of mitochondrial dysfunction in skeletal muscle. Reduced energy production and mitochondrial dysfunctional may further favor infection, and be an important step in the establishment of chronic and persistent infections.
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Affiliation(s)
- A. Aria Tzika
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Athinoula A. Martinos Center of Biomedical Imaging, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
- * E-mail: (AAT); (LGR)
| | - Caterina Constantinou
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
| | - Arunava Bandyopadhaya
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
| | - Nikolaos Psychogios
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Athinoula A. Martinos Center of Biomedical Imaging, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
| | - Sangseok Lee
- Department of Anesthesiology and Critical Care, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
| | - Michael Mindrinos
- Department of Biochemistry, Stanford University School of Medicine, Stanford, California, United States of America
| | - J. A. Jeevendra Martyn
- Department of Anesthesiology and Critical Care, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
| | - Ronald G. Tompkins
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Laurence G. Rahme
- Department of Surgery, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Shriners Hospitals for Children Boston, Boston, Massachusetts, United States of America
- * E-mail: (AAT); (LGR)
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Wang TJ, Ngo D, Psychogios N, Dejam A, Larson MG, Vasan RS, Ghorbani A, O'Sullivan J, Cheng S, Rhee EP, Sinha S, McCabe E, Fox CS, O'Donnell CJ, Ho JE, Florez JC, Magnusson M, Pierce KA, Souza AL, Yu Y, Carter C, Light PE, Melander O, Clish CB, Gerszten RE. 2-Aminoadipic acid is a biomarker for diabetes risk. J Clin Invest 2013; 123:4309-17. [PMID: 24091325 DOI: 10.1172/jci64801] [Citation(s) in RCA: 325] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 07/20/2013] [Indexed: 12/20/2022] Open
Abstract
Improvements in metabolite-profiling techniques are providing increased breadth of coverage of the human metabolome and may highlight biomarkers and pathways in common diseases such as diabetes. Using a metabolomics platform that analyzes intermediary organic acids, purines, pyrimidines, and other compounds, we performed a nested case-control study of 188 individuals who developed diabetes and 188 propensity-matched controls from 2,422 normoglycemic participants followed for 12 years in the Framingham Heart Study. The metabolite 2-aminoadipic acid (2-AAA) was most strongly associated with the risk of developing diabetes. Individuals with 2-AAA concentrations in the top quartile had greater than a 4-fold risk of developing diabetes. Levels of 2-AAA were not well correlated with other metabolite biomarkers of diabetes, such as branched chain amino acids and aromatic amino acids, suggesting they report on a distinct pathophysiological pathway. In experimental studies, administration of 2-AAA lowered fasting plasma glucose levels in mice fed both standard chow and high-fat diets. Further, 2-AAA treatment enhanced insulin secretion from a pancreatic β cell line as well as murine and human islets. These data highlight a metabolite not previously associated with diabetes risk that is increased up to 12 years before the onset of overt disease. Our findings suggest that 2-AAA is a marker of diabetes risk and a potential modulator of glucose homeostasis in humans.
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Loffredo FS, Steinhauser ML, Jay SM, Gannon J, Pancoast JR, Yalamanchi P, Sinha M, Dall'Osso C, Khong D, Shadrach JL, Miller CM, Singer BS, Stewart A, Psychogios N, Gerszten RE, Hartigan AJ, Kim MJ, Serwold T, Wagers AJ, Lee RT. Growth differentiation factor 11 is a circulating factor that reverses age-related cardiac hypertrophy. Cell 2013; 153:828-39. [PMID: 23663781 DOI: 10.1016/j.cell.2013.04.015] [Citation(s) in RCA: 693] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 02/21/2013] [Accepted: 04/03/2013] [Indexed: 02/06/2023]
Abstract
The most common form of heart failure occurs with normal systolic function and often involves cardiac hypertrophy in the elderly. To clarify the biological mechanisms that drive cardiac hypertrophy in aging, we tested the influence of circulating factors using heterochronic parabiosis, a surgical technique in which joining of animals of different ages leads to a shared circulation. After 4 weeks of exposure to the circulation of young mice, cardiac hypertrophy in old mice dramatically regressed, accompanied by reduced cardiomyocyte size and molecular remodeling. Reversal of age-related hypertrophy was not attributable to hemodynamic or behavioral effects of parabiosis, implicating a blood-borne factor. Using modified aptamer-based proteomics, we identified the TGF-β superfamily member GDF11 as a circulating factor in young mice that declines with age. Treatment of old mice to restore GDF11 to youthful levels recapitulated the effects of parabiosis and reversed age-related hypertrophy, revealing a therapeutic opportunity for cardiac aging.
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Affiliation(s)
- Francesco S Loffredo
- Harvard Stem Cell Institute, Brigham and Women's Hospital, Boston, MA 02115, USA
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Tzika AA, Fontes-Oliveira CC, Shestov AA, Constantinou C, Psychogios N, Righi V, Mintzopoulos D, Busquets S, Lopez-Soriano FJ, Milot S, Lepine F, Mindrinos MN, Rahme LG, Argiles JM. Skeletal muscle mitochondrial uncoupling in a murine cancer cachexia model. Int J Oncol 2013; 43:886-94. [PMID: 23817738 PMCID: PMC6903904 DOI: 10.3892/ijo.2013.1998] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 01/14/2013] [Indexed: 12/20/2022] Open
Abstract
Approximately half of all cancer patients present with cachexia, a condition in which disease-associated metabolic changes lead to a severe loss of skeletal muscle mass. Working toward an integrated and mechanistic view of cancer cachexia, we investigated the hypothesis that cancer promotes mitochondrial uncoupling in skeletal muscle. We subjected mice to in vivo phosphorous-31 nuclear magnetic resonance (31P NMR) spectroscopy and subjected murine skeletal muscle samples to gas chromatography/mass spectrometry (GC/MS). The mice used in both experiments were Lewis lung carcinoma models of cancer cachexia. A novel ‘fragmented mass isotopomer’ approach was used in our dynamic analysis of 13C mass isotopomer data. Our 31P NMR and GC/MS results indicated that the adenosine triphosphate (ATP) synthesis rate and tricarboxylic acid (TCA) cycle flux were reduced by 49% and 22%, respectively, in the cancer-bearing mice (p<0.008; t-test vs. controls). The ratio of ATP synthesis rate to the TCA cycle flux (an index of mitochondrial coupling) was reduced by 32% in the cancer-bearing mice (p=0.036; t-test vs. controls). Genomic analysis revealed aberrant expression levels for key regulatory genes and transmission electron microscopy (TEM) revealed ultrastructural abnormalities in the muscle fiber, consistent with the presence of abnormal, giant mitochondria. Taken together, these data suggest that mitochondrial uncoupling occurs in cancer cachexia and thus point to the mitochondria as a potential pharmaceutical target for the treatment of cachexia. These findings may prove relevant to elucidating the mechanisms underlying skeletal muscle wasting observed in other chronic diseases, as well as in aging.
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Affiliation(s)
- A Aria Tzika
- NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burn Institute, Harvard Medical School, Boston, MA 02114, USA
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Mandal R, Kathiria P, Psychogios N, Bouatra S, Krishnamurthy R, Wishart D, Kovalchuk I. Progeny of tobacco mosaic virus-infected Nicotiana tabacum plants exhibit trans-generational changes in metabolic profiles. Biocatalysis and Agricultural Biotechnology 2012. [DOI: 10.1016/j.bcab.2012.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Psychogios N, Hau DD, Peng J, Guo AC, Mandal R, Bouatra S, Sinelnikov I, Krishnamurthy R, Eisner R, Gautam B, Young N, Xia J, Knox C, Dong E, Huang P, Hollander Z, Pedersen TL, Smith SR, Bamforth F, Greiner R, McManus B, Newman JW, Goodfriend T, Wishart DS. The human serum metabolome. PLoS One 2011; 6:e16957. [PMID: 21359215 PMCID: PMC3040193 DOI: 10.1371/journal.pone.0016957] [Citation(s) in RCA: 1146] [Impact Index Per Article: 88.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Accepted: 01/18/2011] [Indexed: 12/14/2022] Open
Abstract
Continuing improvements in analytical technology along with an increased interest in performing comprehensive, quantitative metabolic profiling, is leading to increased interest pressures within the metabolomics community to develop centralized metabolite reference resources for certain clinically important biofluids, such as cerebrospinal fluid, urine and blood. As part of an ongoing effort to systematically characterize the human metabolome through the Human Metabolome Project, we have undertaken the task of characterizing the human serum metabolome. In doing so, we have combined targeted and non-targeted NMR, GC-MS and LC-MS methods with computer-aided literature mining to identify and quantify a comprehensive, if not absolutely complete, set of metabolites commonly detected and quantified (with today's technology) in the human serum metabolome. Our use of multiple metabolomics platforms and technologies allowed us to substantially enhance the level of metabolome coverage while critically assessing the relative strengths and weaknesses of these platforms or technologies. Tables containing the complete set of 4229 confirmed and highly probable human serum compounds, their concentrations, related literature references and links to their known disease associations are freely available at http://www.serummetabolome.ca.
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Affiliation(s)
| | - David D. Hau
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Jun Peng
- Department of Chemistry, University of Alberta, Edmonton, Canada
| | - An Chi Guo
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Rupasri Mandal
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Souhaila Bouatra
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Igor Sinelnikov
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | | | - Roman Eisner
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Bijaya Gautam
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Nelson Young
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Jianguo Xia
- Department of Biological Sciences, University of Alberta, Edmonton, Canada
| | - Craig Knox
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Edison Dong
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Paul Huang
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Zsuzsanna Hollander
- James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research and the NCE CECR Centre of Excellence for Prevention of Organ Failure (PROOF Centre), Vancouver, Canada
| | - Theresa L. Pedersen
- United States Department of Agriculture, Agricultural Research Service (ARS), Western Human Nutrition Research Center, Davis, California, United States of America
| | - Steven R. Smith
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States of America
| | - Fiona Bamforth
- Department of Clinical Laboratory Medicine, University of Alberta, Edmonton, Canada
| | - Russ Greiner
- Department of Computing Science, University of Alberta, Edmonton, Canada
| | - Bruce McManus
- James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research and the NCE CECR Centre of Excellence for Prevention of Organ Failure (PROOF Centre), Vancouver, Canada
| | - John W. Newman
- United States Department of Agriculture, Agricultural Research Service (ARS), Western Human Nutrition Research Center, Davis, California, United States of America
| | - Theodore Goodfriend
- Veterans Administration Hospital and University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - David S. Wishart
- Department of Computing Science, University of Alberta, Edmonton, Canada
- Department of Biological Sciences, University of Alberta, Edmonton, Canada
- National Institute for Nanotechnology, Edmonton, Canada
- * E-mail:
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Andronesi OC, Mintzopoulos D, Righi V, Psychogios N, Kesarwani M, He J, Yasuhara S, Dai G, Rahme LG, Tzika AA. Combined off-resonance imaging and T2 relaxation in the rotating frame for positive contrast MR imaging of infection in a murine burn model. J Magn Reson Imaging 2011; 32:1172-83. [PMID: 21031524 DOI: 10.1002/jmri.22349] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
PURPOSE To develop novel magnetic resonance (MR) imaging methods to monitor accumulation of macrophages in inflammation and infection. Positive-contrast MR imaging provides an alternative to negative-contrast MRI, exploiting the chemical shift induced by ultra-small superparamagnetic iron-oxide (USPIO) nanoparticles to nearby water molecules. We introduce a novel combination of off-resonance (ORI) positive-contrast MRI and T(2ρ) relaxation in the rotating frame (ORI-T(2ρ)) for positive-contrast MR imaging of USPIO. MATERIALS AND METHODS We tested ORI-T(2ρ) in phantoms and imaged in vivo the accumulation of USPIO-labeled macrophages at the infection site in a mouse model of burn trauma and infection with Pseudomonas aeruginosa (PA). PA infection is clinically important. The USPIO nanoparticles were injected directly in the animals in solution, and macrophage labeling occurred in vivo in the animal model. RESULTS We observed a significant difference between ORI-T(2ρ) and ORI, which leads us to suggest that ORI-T(2ρ) is more sensitive in detecting USPIO signal. To this end, the ORI-T(2ρ) positive contrast method may prove to be of higher utility in future research. CONCLUSION Our results may have direct implications in the longitudinal monitoring of infection, and open perspectives for testing novel anti-infective compounds.
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Affiliation(s)
- Ovidiu C Andronesi
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA
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Andronesi OC, Mintzopoulos D, Psychogios N, Kesarwani M, He J, Yasuhara S, Dai G, Rahme LG, Tzika AA. Erratum: Andronesi OC, Mintzopoulos D, Psychogios N, et al. Combined off-resonance imaging and T2 relaxation in the rotating frame for positive contrast MR imaging of infection in a murine burn model. J Magn Reson Imaging 2010;32:1172-1183. J Magn Reson Imaging 2011. [DOI: 10.1002/jmri.22449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Tsimihodimos V, Psychogios N, Kakaidi V, Bairaktari E, Elisaf M. Salicylate-Induced Proximal Tubular Dysfunction. Am J Kidney Dis 2007; 50:463-7. [PMID: 17720526 DOI: 10.1053/j.ajkd.2007.03.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2006] [Accepted: 03/27/2007] [Indexed: 11/11/2022]
Abstract
We describe the case of a 17-year-old girl who was admitted to our clinic for drug poisoning. Twelve hours after the ingestion of 25 tablets of aspirin (12.5 g of acetylsalicylic acid), the patient had a generalized proximal tubular dysfunction characterized by glucosuria (in the face of normal serum glucose levels), proteinuria, and uric acid wasting. Further characterization of the tubular dysfunction using high-resolution proton nuclear magnetic resonance spectroscopy of the urine showed a pattern consistent with proximal tubular injury. An important characteristic of the salicylate-induced proximal tubular dysfunction in our patient was its rapid reversibility. A trend toward normalization of fractional excretion values of electrolytes was observed 2 days after ingestion. Determination of serum and urine metabolites and spectroscopy of urine 15 days later showed no evidence of tubular dysfunction. The mechanisms potentially implicated in the pathogenesis of salicylate-induced Fanconi syndrome are discussed and a brief review of the relevant literature is provided.
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Affiliation(s)
- Vasilis Tsimihodimos
- Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
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