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Dymond T. The Effects of Viral Infection on Lymphocyte Metabolism: A New Perspective on Disease Characterization. Viral Immunol 2018; 31:278-281. [DOI: 10.1089/vim.2017.0194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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302
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Bauer D, Wegener J, Bienefeld K. Recognition of mite-infested brood by honeybee (Apis mellifera) workers may involve thermal sensing. J Therm Biol 2018; 74:311-316. [PMID: 29801643 DOI: 10.1016/j.jtherbio.2018.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 02/22/2018] [Accepted: 04/24/2018] [Indexed: 01/25/2023]
Abstract
Hygienic behavior, i.e. the removal of diseased or damaged brood by worker honey bees (Apis mellifera), is seen as one of the principal behavioral elements of this species' social immunity. Identification of the stimuli that trigger it would be helpful in searching for biochemical and molecular markers of this important breeding trait. While many studies at the genomic, transcriptomic, and behavioral level have pointed to the implication of chemical cues, we here hypothesized that thermal cues are alternatively/additionally involved. To test this hypothesis, we first measured whether infestation by the mite Varroa destructor (a condition known to induce hygienic behavior) leads to a thermal gradient between affected and unaffected brood. We found that infested brood cells were between 0.03 and 0.19 °C warmer than uninfested controls. Next, we tested whether artificially heating an area of a brood comb would increase the removal of infested or uninfested brood as compared to an unheated control area, and found that this was not the case. Finally, we investigated whether the heating of individual brood cells, as opposed to comb areas, would influence brood removal from cells adjacent to the heated one. This was the case for uninfested, though not for infested cells. We conclude that infestation by V. destructor leads to a heating of brood cells that should be perceivable by bees, and that small-scale temperature gradients can influence brood removal. This makes it appear possible that thermal cues play a role in triggering hygienic behavior of honey bees directed at varroa-infested larvae/pupae, although our results are insufficient to prove such an involvement.
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Affiliation(s)
- Daniel Bauer
- Bee Research Institute, F.-Engels-Straße 32, 16540 Hohen Neuendorf, Germany.
| | - Jakob Wegener
- Bee Research Institute, F.-Engels-Straße 32, 16540 Hohen Neuendorf, Germany.
| | - Kaspar Bienefeld
- Bee Research Institute, F.-Engels-Straße 32, 16540 Hohen Neuendorf, Germany.
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303
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Moniruzzaman M, Gann ER, Wilhelm SW. Infection by a Giant Virus (AaV) Induces Widespread Physiological Reprogramming in Aureococcus anophagefferens CCMP1984 - A Harmful Bloom Algae. Front Microbiol 2018; 9:752. [PMID: 29725322 PMCID: PMC5917014 DOI: 10.3389/fmicb.2018.00752] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/03/2018] [Indexed: 01/05/2023] Open
Abstract
While viruses with distinct phylogenetic origins and different nucleic acid types can infect and lyse eukaryotic phytoplankton, “giant” dsDNA viruses have been found to be associated with important ecological processes, including the collapse of algal blooms. However, the molecular aspects of giant virus–host interactions remain largely unknown. Aureococcus anophagefferens virus (AaV), a giant virus in the Mimiviridae clade, is known to play a critical role in regulating the fate of brown tide blooms caused by the pelagophyte Aureococcus anophagefferens. To understand the physiological response of A. anophagefferens CCMP1984 upon AaV infection, we studied the transcriptomic landscape of this host–virus pair over an entire infection cycle using a RNA-sequencing approach. A massive transcriptional response of the host was evident as early as 5 min post-infection, with modulation of specific processes likely related to both host defense mechanism(s) and viral takeover of the cell. Infected Aureococcus showed a relative suppression of host-cell transcripts associated with photosynthesis, cytoskeleton formation, fatty acid, and carbohydrate biosynthesis. In contrast, host cell processes related to protein synthesis, polyamine biosynthesis, cellular respiration, transcription, and RNA processing were overrepresented compared to the healthy cultures at different stages of the infection cycle. A large number of redox active host-selenoproteins were overexpressed, which suggested that viral replication and assembly progresses in a highly oxidative environment. The majority (99.2%) of annotated AaV genes were expressed at some point during the infection cycle and demonstrated a clear temporal–expression pattern and an increasing relative expression for the majority of the genes through the time course. We detected a putative early promoter motif for AaV, which was highly similar to the early promoter elements of two other Mimiviridae members, indicating some degree of evolutionary conservation of gene regulation within this clade. This large-scale transcriptome study provides insights into the Aureococcus cells infected by a giant virus and establishes a foundation to test hypotheses regarding metabolic and regulatory processes critical for AaV and other Mimiviridae members.
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Affiliation(s)
- Mohammad Moniruzzaman
- Department of Microbiology, The University of Tennessee, Knoxville, Knoxville, TN, United States.,Monterey Bay Aquarium Research Institute (MBARI), Moss Landing, CA, United States
| | - Eric R Gann
- Department of Microbiology, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Steven W Wilhelm
- Department of Microbiology, The University of Tennessee, Knoxville, Knoxville, TN, United States
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304
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Turi KN, Romick-Rosendale L, Ryckman KK, Hartert TV. A review of metabolomics approaches and their application in identifying causal pathways of childhood asthma. J Allergy Clin Immunol 2018; 141:1191-1201. [PMID: 28479327 PMCID: PMC5671382 DOI: 10.1016/j.jaci.2017.04.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 03/08/2017] [Accepted: 04/13/2017] [Indexed: 12/20/2022]
Abstract
Because asthma is a disease that results from host-environment interactions, an approach that allows assessment of the effect of the environment on the host is needed to understand the disease. Metabolomics has appealing potential as an application to study pathways to childhood asthma development. The objective of this review is to provide an overview of metabolomics methods and their application to understanding host-environment pathways in asthma development. We reviewed recent literature on advances in metabolomics and their application to study pathways to childhood asthma development. We highlight the (1) potential of metabolomics in understanding the pathogenesis of disease and the discovery of biomarkers; (2) choice of metabolomics techniques, biospecimen handling, and data analysis; (3) application to studying the role of the environment on asthma development; (4) review of metabolomics applied to the outcome of asthma; (5) recommendations for application of metabolomics-based -omics data integration in understanding disease pathogenesis; and (6) limitations. In conclusion, metabolomics allows use of biospecimens to identify useful biomarkers and pathways involved in disease development and subsequently to inform a greater understanding of disease pathogenesis and endotypes and prediction of the clinical course of childhood asthma phenotypes.
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Affiliation(s)
- Kedir N Turi
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tenn
| | - Lindsey Romick-Rosendale
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kelli K Ryckman
- Departments of Epidemiology and Pediatrics, College of Public Health and Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Tina V Hartert
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tenn.
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305
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Liu W, Qiu X, Song C, Sun Y, Meng C, Liao Y, Tan L, Ding Z, Liu X, Ding C. Deep Sequencing-Based Transcriptome Profiling Reveals Avian Interferon-Stimulated Genes and Provides Comprehensive Insight into Newcastle Disease Virus-Induced Host Responses. Viruses 2018; 10:E162. [PMID: 29601508 PMCID: PMC5923456 DOI: 10.3390/v10040162] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/22/2018] [Accepted: 03/28/2018] [Indexed: 12/13/2022] Open
Abstract
Newcastle disease virus (NDV) is an avian paramyxovirus that causes significant economic losses to the poultry industry worldwide, with variations in NDV pathogenicity due to the differences in virulence between strains. However, there is limited knowledge regarding the avian innate immune response to NDV infection. In this study, transcriptional profiles were obtained from chick embryo fibroblasts (CEFs) that were infected with the highly virulent NDV Herts/33 strain or the nonvirulent LaSota strain using RNA-seq. This yielded 8433 transcripts that were associated with NDV infection. This list of candidate genes was then further examined using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. It showed a high enrichment in the areas of cellular components and metabolic processes, with the cellular components possibly being associated with NDV pathogenicity. Among these 8433 transcripts, 3616 transcripts associated with interferon-stimulated genes (ISGs) were obtained; these transcripts are involved in metabolic processes, including protein phosphorylation and protein modification. These results provide further insight into the identification of genes that are involved in NDV infection. The global survey of changes in gene expression performed herein provides new insights into the complicated molecular mechanisms underlying virus and host interactions and will enable the use of new strategies to protect chickens against this virus.
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Affiliation(s)
- Weiwei Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Xusheng Qiu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Cuiping Song
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Yingjie Sun
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Chunchun Meng
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Ying Liao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Lei Tan
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
| | - Zhuang Ding
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Xiufan Liu
- School of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China.
| | - Chan Ding
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
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306
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MicroRNA 130a Regulates both Hepatitis C Virus and Hepatitis B Virus Replication through a Central Metabolic Pathway. J Virol 2018; 92:JVI.02009-17. [PMID: 29321333 PMCID: PMC5972888 DOI: 10.1128/jvi.02009-17] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 01/02/2018] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) infection has been shown to regulate microRNA 130a (miR-130a) in patient biopsy specimens and in cultured cells. We sought to identify miR-130a target genes and to explore the mechanisms by which miR-130a regulates HCV and hepatitis B virus (HBV) replication. We used bioinformatics software, including miRanda, TargetScan, PITA, and RNAhybrid, to predict potential miR-130a target genes. miR-130a and its target genes were overexpressed or were knocked down by use of small interfering RNA (siRNA) or clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 guide RNA (gRNA). Selected gene mRNAs and their proteins, together with HCV replication in OR6 cells, HCV JFH1-infected Huh7.5.1 cells, and HCV JFH1-infected primary human hepatocytes (PHHs) and HBV replication in HepAD38 cells, HBV-infected NTCP-Huh7.5.1 cells, and HBV-infected PHHs, were measured by quantitative reverse transcription-PCR (qRT-PCR) and Western blotting, respectively. We selected 116 predicted target genes whose expression was related to viral pathogenesis or immunity for qPCR validation. Of these, the gene encoding pyruvate kinase in liver and red blood cell (PKLR) was confirmed to be regulated by miR-130a overexpression. miR-130a overexpression (via a mimic) knocked down PKLR mRNA and protein levels. A miR-130a inhibitor and gRNA increased PKLR expression, HCV replication, and HBV replication, while miR-130a gRNA and PKLR overexpression increased HCV and HBV replication. Supplemental pyruvate increased HCV and HBV replication and rescued the inhibition of HCV and HBV replication by the miR-130a mimic and PKLR knockdown. We concluded that miR-130a regulates HCV and HBV replication through its targeting of PKLR and subsequent pyruvate production. Our data provide novel insights into key metabolic enzymatic pathway steps regulated by miR-130a, including the steps involving PKLR and pyruvate, which are subverted by HCV and HBV replication. IMPORTANCE We identified that miR-130a regulates the target gene PKLR and its subsequent effect on pyruvate production. Pyruvate is a key intermediate in several metabolic pathways, and we identified that pyruvate plays a key role in regulation of HCV and HBV replication. This previously unrecognized, miRNA-regulated antiviral mechanism has implications for the development of host-directed strategies to interrupt the viral life cycle and prevent establishment of persistent infection for HCV, HBV, and potentially other viral infections.
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307
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Pizarro C, Esteban-Díez I, Arenzana-Rámila I, González-Sáiz JM. Discrimination of patients with different serological evolution of HIV and co-infection with HCV using metabolic fingerprinting based on Fourier transform infrared. JOURNAL OF BIOPHOTONICS 2018; 11:e201700035. [PMID: 28949439 DOI: 10.1002/jbio.201700035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 09/13/2017] [Accepted: 09/17/2017] [Indexed: 06/07/2023]
Abstract
Human immunodeficiency virus (HIV) is a retrovirus that weakens the immune system and permits opportunistic diseases such as hepatitis C (HCV) to enter the body. These diseases induce metabolic disorders in the patients and it is therefore logical to approach them from a holistic, functional perspective, studying the metabolome comprehensively to identify metabolic signatures associated with certain disease states. The metabolomics strategy here proposed involves metabolic fingerprinting using Fourier transform infrared spectroscopy and chemometric tools on 72 plasma samples (subdivided into 63 training and 9 test samples) to differentiate between healthy subjects and patients with different disease stages. Several options, relating to the variable selection method used in linear discriminant analysis and the number of categories being considered, were explored to optimize discrimination ability. A total of 18 bands enabled differentiation between control subjects, HIV patients and the group that encompassed patients with acquired immune deficiency syndrome (AIDS), AIDS/HCV and HIV/HCV, providing overall classification and internal prediction rates of 97.67% and 93.65%, respectively. Only 9 bands were required to further discriminate between AIDS, AIDS/HCV and HIV/HCV, with 99.20% (training) and 89.66% (cross-validation) correct classifications. The simplicity and effectiveness of the classification methodology proposed was reinforced by the satisfactory results obtained in external prediction.
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308
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Is early life exposure to polyomaviruses and herpesviruses associated with obesity indices and metabolic traits in childhood? Int J Obes (Lond) 2018; 42:1590-1601. [PMID: 29445241 DOI: 10.1038/s41366-018-0017-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 12/20/2017] [Accepted: 12/27/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Evidence for an infectious origin of obesity is emerging. We explored whether common viruses were associated with obesity and metabolic traits. METHODS We used cross-sectional (n = 674) and prospective (n = 440) data from children participating at the 4 and 6 years of age follow-up in the Rhea birth cohort. Presence of IgG antibodies to ten polyomaviruses (BKPyV, JCPyV, KIPyV, WUPyV, HPyV6, HPyV7, TSPyV, MCPyV, HPyV9, and HPyV10) and four herpesviruses (EBV, CMV, HSV-1, and HSV-2) were measured at age 4. Body mass index, waist circumference, and skinfold thickness were measured at age 4 and 6. Data on serum lipids, leptin, and adiponectin were also available. Multivariable linear regression models were used to explore the associations. RESULTS At 4 years of age, seroprevalence to polyomaviruses ranged from 21.0% for HPyV9 to 82.0% for HPyV10. Seroprevalence for EBV, CMV, HSV-1, and HSV-2 was 53.0%, 26.0%, 3.6%, and 1.5% respectively. BKPyV seropositivity was associated with lower BMI SD score at age 4 [-0.21 (95% CI: -0.39, -0.03)] and 6 [-0.27 (95% CI:-0.48, -0.05)], waist circumference at age 4 [-1.12 cm (95% CI: -2.10, -0.15)] and 6 [-1.73 cm (95% CI: -3.33, -0.12)], sum of four skinfolds [-2.97 mm (95% CI: -5.70, -0.24)], and leptin levels at age 4 [ratio of geometric means, 0.83 (95% CI: 0.70, 0.98)]. CMV seropositivity was associated with higher BMI SD score at age 4 [0.28 (95% CI: 0.11, 0.45)] and 6 [0.24 (95% CI: 0.03, 0.45)] and sum of four skinfolds at age 6 [4.75 mm (95% CI: 0.67, 8.83)]. Having "2-3 herpesviruses infections" (versus "0 herpesvirus infections") was associated with higher BMI SD score [0.32, (95% CI: 0.12, 0.53)], waist circumference [1.22 cm (95% CI: 0.13, 2.31)], and sum of four skinfolds [3.26 mm (95% CI: 0.18, 6.35)] at age 4. Polyomaviruses burden was not associated with outcomes. CONCLUSIONS A higher herpesviruses burden and CMV seropositivity were associated with obesity traits in childhood.
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309
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Raniga K, Liang C. Interferons: Reprogramming the Metabolic Network against Viral Infection. Viruses 2018; 10:E36. [PMID: 29342871 PMCID: PMC5795449 DOI: 10.3390/v10010036] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 01/09/2018] [Accepted: 01/12/2018] [Indexed: 12/12/2022] Open
Abstract
Viruses exploit the host and induce drastic metabolic changes to ensure an optimal environment for replication and the production of viral progenies. In response, the host has developed diverse countermeasures to sense and limit these alterations to combat viral infection. One such host mechanism is through interferon signaling. Interferons are cytokines that enhances the transcription of hundreds of interferon-stimulated genes (ISGs) whose products are key players in the innate immune response to viral infection. In addition to their direct targeting of viral components, interferons and ISGs exert profound effects on cellular metabolism. Recent studies have started to illuminate on the specific role of interferon in rewiring cellular metabolism to activate immune cells and limit viral infection. This review reflects on our current understanding of the complex networking that occurs between the virus and host at the interface of cellular metabolism, with a focus on the ISGs in particular, cholesterol-25-hydroxylase (CH25H), spermidine/spermine acetyltransferase 1 (SAT1), indoleamine-2,3-dioxygenase (IDO1) and sterile alpha motif and histidine/aspartic acid domain-containing protein 1 (SAMHD1), which were recently discovered to modulate specific metabolic events and consequently deter viral infection.
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Affiliation(s)
- Kavita Raniga
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada.
- Department of Microbiology & Immunology, McGill University, Montreal, QC H3A 2B4, Canada.
| | - Chen Liang
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada.
- Department of Microbiology & Immunology, McGill University, Montreal, QC H3A 2B4, Canada.
- Department of Medicine, McGill University, Montreal, QC H3A 2B4, Canada.
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310
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311
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Mazzon M, Castro C, Thaa B, Liu L, Mutso M, Liu X, Mahalingam S, Griffin JL, Marsh M, McInerney GM. Alphavirus-induced hyperactivation of PI3K/AKT directs pro-viral metabolic changes. PLoS Pathog 2018; 14:e1006835. [PMID: 29377936 PMCID: PMC5805360 DOI: 10.1371/journal.ppat.1006835] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 02/08/2018] [Accepted: 12/20/2017] [Indexed: 11/18/2022] Open
Abstract
Virus reprogramming of cellular metabolism is recognised as a critical determinant for viral growth. While most viruses appear to activate central energy metabolism, different viruses have been shown to rely on alternative mechanisms of metabolic activation. Whether related viruses exploit conserved mechanisms and induce similar metabolic changes is currently unclear. In this work we investigate how two alphaviruses, Semliki Forest virus and Ross River virus, reprogram host metabolism and define the molecular mechanisms responsible. We demonstrate that in both cases the presence of a YXXM motif in the viral protein nsP3 is necessary for binding to the PI3K regulatory subunit p85 and for activating AKT. This leads to an increase in glucose metabolism towards the synthesis of fatty acids, although additional mechanisms of metabolic activation appear to be involved in Ross River virus infection. Importantly, a Ross River virus mutant that fails to activate AKT has an attenuated phenotype in vivo, suggesting that viral activation of PI3K/AKT contributes to virulence and disease.
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Affiliation(s)
- Michela Mazzon
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Cecilia Castro
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
- Cambridge Systems Biology Centre, University of Cambridge, Cambridge, United Kingdom
| | - Bastian Thaa
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, SE, Sweden
- Institute of Virology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Lifeng Liu
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, SE, Sweden
| | - Margit Mutso
- Institute of Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Xiang Liu
- Institute of Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Suresh Mahalingam
- Institute of Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Julian L. Griffin
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
- Cambridge Systems Biology Centre, University of Cambridge, Cambridge, United Kingdom
| | - Mark Marsh
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Gerald M. McInerney
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, SE, Sweden
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312
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Butorov EV. Plasma L-Carnitine and L-Lysine Concentrations in HIV-Infected Patients. Open Biochem J 2017; 11:119-131. [PMID: 29387270 PMCID: PMC5750727 DOI: 10.2174/1874091x01711010119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 01/23/2023] Open
Abstract
Background: Virus infections are associated with significant alterations in host cells amino acids profiles that support biosynthetic demands necessary for production of viral progeny. Amino acids play an important role in the pathogenesis of all virus-related infections both as basic substrates for protein synthesis and as regulators in many metabolic pathways. Objective: Our aim was to determine the changes in plasma L-carnitine levels and its amino acid precursor (L-lysine) in HIV-infected patients. Methods: We performed a case-control study of 430 HIV-1 infected males (non-vegetarians) without any restriction in the
nourishment, before highly active antiretroviral therapy (HAART) and 125 HIV-1 subjects after the introduction of
HAART who were periodically monitored in the Municipal Center of HIV/AIDS prophylaxis, Surgut, Russian
Federation Results: The plasma total (TC) and free (FC) L-carnitine concentrations markedly decreased with the clinical stages of HIV infection. The mean plasma TC, FC and L-lysine levels were significantly lower in asymptomatic stage (A) and advanced CDC stages (B, C) HIV-infected patients compared with our reference values. The total and free L-carnitine and its amino acid precursor concentrations mild increased in HIV-infected subjects after the introduction of HAART. Our data revealed that L-lysine amino acid and its derivative (TC) levels were negatively correlated with viral load and inversely with CD4 count lymphocytes in the total cohort. Conclusion: The study results show that there was evidence for an association between plasma L-carnitine, L-lysine and HIV-1 RNA levels, immunological markers and clinical stages of HIV infection. The obtained data indicate that level changes of these host essential nutritional elements can play an important role in the HIV life cycle. These findings are important for understanding the pathophysiology of HIV infection and must be considered in further research for the development of new approaches in the treatment of the disease.
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Affiliation(s)
- Evgeny V Butorov
- The Municipal Center of HIV/AIDS prophylaxis, Surgut, Russian Federation
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313
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Runtsch MC, O'Neill LA. GOTcha: lncRNA-ACOD1 targets metabolism during viral infection. Cell Res 2017; 28:137-138. [PMID: 29192676 DOI: 10.1038/cr.2017.153] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Long-noncoding RNAs (lncRNAs) are emerging as important regulators of cellular processes, but few have been functionally characterized in host-pathogen interactions. A recent report in Science demonstrates a mechanistic role for a novel lncRNA in directly binding an essential metabolic enzyme, glutamic-oxaloacetic transaminase (GOT2); this interaction benefits viral replication via alteration of host metabolism.
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Affiliation(s)
- Marah C Runtsch
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Luke Aj O'Neill
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
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314
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Liu CC, Ho LP, Yang CH, Kao TY, Chou HY, Pai TW. Comparison of grouper infection with two different iridoviruses using transcriptome sequencing and multiple reference species selection. FISH & SHELLFISH IMMUNOLOGY 2017; 71:264-274. [PMID: 28939532 DOI: 10.1016/j.fsi.2017.09.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/28/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
Due to high-density aquafarming in Taiwan, groupers are commonly infected with two different iridoviruses: Megalocytivirus (grouper iridovirus of Taiwan, TGIV) and Ranavirus (grouper iridovirus, GIV). Iridoviral diseases cause mass mortality, and surviving fish retain these pathogens, which can then be horizontally transferred. These viruses have therefore become a major challenge for grouper aquaculture. In this study, comparisons of the biological responses of groupers to infection with these two different iridoviruses were performed. A novel approach for transcriptomic analysis was proposed to enhance the discovery of differentially expressed genes and associated biological pathways. In this method, suitable and available reference species are selected from the NCBI taxonomy tree and the Ensembl and KEGG databases instead of either choosing only one model species or adopting the NCBI non-redundant dataset as references. Our results show that selection of multiple appropriate model species as references increases the efficiency and performance of analyses compared to those of traditional approaches. Using this method, 17 shared pathways and 5 specific pathways were found to be significantly differentially expressed following infection with the two iridoviruses, among which 11 pathways were additionally identified based on the proposed method of multiple reference species selection. Among the pathways responsive to infection with a specific iridovirus, the spliceosomal pathway (ko03040; p-value = 0.0011) was exclusively associated with TGIV infection, while the glycolysis/gluconeogenesis pathway (ko00010; p-value = 0.0032) was associated with GIV infection. These findings and designed corresponding biological experiments may facilitate a deeper understanding of the mechanisms by which both TGIV and GIV cause fatal infections, as well as the ways in which they induce different pathologies and symptoms. We believe that the proposed novel mechanism for de novo transcriptomic analysis provides superior and comprehensive functional annotations and that the resulting shared and specific pathways identified may help immunologists develop specific vaccines against various types of iridovirus in the near future.
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Affiliation(s)
- Chun-Cheng Liu
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, 202, Taiwan
| | - Li-Ping Ho
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, 202, Taiwan
| | - Cin-Hang Yang
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, 202, Taiwan
| | - Tsung-Yu Kao
- Department of Aquaculture, College of Life Science, National Taiwan Ocean University, Keelung, 202, Taiwan
| | - Hsin-Yiu Chou
- Department of Aquaculture, College of Life Science, National Taiwan Ocean University, Keelung, 202, Taiwan.
| | - Tun-Wen Pai
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, 202, Taiwan.
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315
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Affiliation(s)
- Jonathan J Kotzin
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Walter K Mowel
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jorge Henao-Mejia
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. .,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Divisions of Protective Immunity and Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
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316
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Minchenberg SB, Massa PT. The control of oligodendrocyte bioenergetics by interferon-gamma (IFN-γ) and Src homology region 2 domain-containing phosphatase-1 (SHP-1). J Neuroimmunol 2017; 331:46-57. [PMID: 29113698 DOI: 10.1016/j.jneuroim.2017.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/17/2017] [Accepted: 10/24/2017] [Indexed: 02/07/2023]
Abstract
Glycolysis and mitochondrial respiration are essential for oligodendrocyte metabolism in both the developing and adult CNS. Based on recent reports on the effects of the proinflammatory cytokine IFN-γ on metabolism and on oligodendrocytes, we addressed whether IFN-γ may affect oligodendrocyte bioenergetics in ways relevant to CNS disease. Oligodendrocytes of mice treated with IFN-γ showed significant reductions in aerobic glycolysis and mitochondrial respiration. As expected, IFN-γ treatment led to the induction of STAT1 in oligodendrocytes indicating active signaling into these cells. To determine the direct effects of IFN-γ on oligodendrocyte metabolism, cultured oligodendrocytes were treated with IFN-γ in vitro, which resulted in suppression of glycolysis similar to oligodendrocytes of animals treated with IFN-γ in vivo. Mice lacking SHP-1, a key regulator of IFN-γ and STAT1 signaling in CNS glia, had high constitutive levels of STAT1 and decreased aerobic glycolysis and mitochondrial respiration rates relative to wild type mouse oligodendrocytes. Together, these data show that IFN-γ and SHP-1 control oligodendrocyte bioenergetics in ways that may relate to the role of this cytokine in CNS disease.
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Affiliation(s)
- Scott B Minchenberg
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, NY, United States
| | - Paul T Massa
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, NY, United States; Department of Neurology, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, NY, United States.
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317
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Wang P, Xu J, Wang Y, Cao X. An interferon-independent lncRNA promotes viral replication by modulating cellular metabolism. Science 2017; 358:1051-1055. [PMID: 29074580 DOI: 10.1126/science.aao0409] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/13/2017] [Indexed: 12/12/2022]
Abstract
Viruses regulate host metabolic networks to improve their survival. The molecules that are responsive to viral infection and regulate such metabolic changes are hardly known, but are essential for understanding viral infection. Here we identify a long noncoding RNA (lncRNA) that is induced by multiple viruses, but not by type I interferon (IFN-I), and facilitates viral replication in mouse and human cells. In vivo deficiency of lncRNA-ACOD1 (a lncRNA identified by its nearest coding gene Acod1, aconitate decarboxylase 1) significantly attenuates viral infection through IFN-I-IRF3 (interferon regulatory factor 3)-independent pathways. Cytoplasmic lncRNA-ACOD1 directly binds the metabolic enzyme glutamic-oxaloacetic transaminase (GOT2) near the substrate niche, enhancing its catalytic activity. Recombinant GOT2 protein and its metabolites could rescue viral replication upon lncRNA-ACOD1 deficiency and increase lethality. This work reveals a feedback mechanism of virus-induced lncRNA-mediated metabolic promotion of viral infection and a potential target for developing broad-acting antiviral therapeutics.
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Affiliation(s)
- Pin Wang
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Junfang Xu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yujia Wang
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xuetao Cao
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China. .,Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China.,Department of Immunology and Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100005, China
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318
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Schneider KM, Watson NB, Minchenberg SB, Massa PT. The influence of macrophage growth factors on Theiler's Murine Encephalomyelitis Virus (TMEV) infection and activation of macrophages. Cytokine 2017; 102:83-93. [PMID: 28800924 DOI: 10.1016/j.cyto.2017.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 02/06/2023]
Abstract
Macrophages are common targets for infection and innate immune activation by many pathogenic viruses including the neurotropic Theiler's Murine Encephalomyelitis Virus (TMEV). As both infection and innate activation of macrophages are key determinants of viral pathogenesis especially in the central nervous system (CNS), an analysis of macrophage growth factors on these events was performed. C3H mouse bone-marrow cells were differentiated in culture using either recombinant macrophage colony stimulating factor (M-CSF) or granulocyte-macrophage colony-stimulating factor (GM-CSF), inoculated with TMEV (BeAn) and analyzed at various times thereafter. Cytokine RNA and protein analysis, virus titers, and flow cytometry were performed to characterize virological parameters under these culture conditions. GM-CSF-differentiated macrophages showed higher levels of TMEV viral RNA and proinflammatory molecules compared to infected M-CSF-differentiated cells. Thus, GM-CSF increases both TMEV infection and TMEV-induced activation of macrophages compared to that seen with M-CSF. Moreover, while infectious viral particles decreased from a peak at 12h to undetectable levels at 48h post infection, TMEV viral RNA remained higher in GM-CSF- compared to M-CSF-differentiated macrophages in concert with increased proinflammatory gene expression. Analysis of a possible basis for these differences determined that glycolytic rates contributed to heightened virus replication and proinflammatory cytokine secretion in GM-CSF compared to M-CSF-differentiated macrophages. In conclusion, we provide evidence implicating a role for GM-CSF in promoting virus replication and proinflammatory cytokine expression in macrophages, indicating that GM-CSF may be a key factor for TMEV infection and the induction of chronic TMEV-induced immunopathogenesis in the CNS.
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Affiliation(s)
- Karin M Schneider
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY, USA.
| | - Neva B Watson
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Scott B Minchenberg
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Paul T Massa
- Department of Neurology, SUNY Upstate Medical University, Syracuse, NY, USA
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319
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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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320
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Nath AP, Ritchie SC, Byars SG, Fearnley LG, Havulinna AS, Joensuu A, Kangas AJ, Soininen P, Wennerström A, Milani L, Metspalu A, Männistö S, Würtz P, Kettunen J, Raitoharju E, Kähönen M, Juonala M, Palotie A, Ala-Korpela M, Ripatti S, Lehtimäki T, Abraham G, Raitakari O, Salomaa V, Perola M, Inouye M. An interaction map of circulating metabolites, immune gene networks, and their genetic regulation. Genome Biol 2017; 18:146. [PMID: 28764798 PMCID: PMC5540552 DOI: 10.1186/s13059-017-1279-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 07/14/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Immunometabolism plays a central role in many cardiometabolic diseases. However, a robust map of immune-related gene networks in circulating human cells, their interactions with metabolites, and their genetic control is still lacking. Here, we integrate blood transcriptomic, metabolomic, and genomic profiles from two population-based cohorts (total N = 2168), including a subset of individuals with matched multi-omic data at 7-year follow-up. RESULTS We identify topologically replicable gene networks enriched for diverse immune functions including cytotoxicity, viral response, B cell, platelet, neutrophil, and mast cell/basophil activity. These immune gene modules show complex patterns of association with 158 circulating metabolites, including lipoprotein subclasses, lipids, fatty acids, amino acids, small molecules, and CRP. Genome-wide scans for module expression quantitative trait loci (mQTLs) reveal five modules with mQTLs that have both cis and trans effects. The strongest mQTL is in ARHGEF3 (rs1354034) and affects a module enriched for platelet function, independent of platelet counts. Modules of mast cell/basophil and neutrophil function show temporally stable metabolite associations over 7-year follow-up, providing evidence that these modules and their constituent gene products may play central roles in metabolic inflammation. Furthermore, the strongest mQTL in ARHGEF3 also displays clear temporal stability, supporting widespread trans effects at this locus. CONCLUSIONS This study provides a detailed map of natural variation at the blood immunometabolic interface and its genetic basis, and may facilitate subsequent studies to explain inter-individual variation in cardiometabolic disease.
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Affiliation(s)
- Artika P Nath
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, 3010, Victoria, Australia.,Systems Genomics Lab, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Scott C Ritchie
- Systems Genomics Lab, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.,Department of Pathology, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Sean G Byars
- Department of Pathology, The University of Melbourne, Parkville, 3010, Victoria, Australia.,School of BioSciences, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Liam G Fearnley
- Department of Pathology, The University of Melbourne, Parkville, 3010, Victoria, Australia.,School of BioSciences, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Aki S Havulinna
- National Institute for Health and Welfare, Helsinki, 00271, Finland.,Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, 00014, Finland
| | - Anni Joensuu
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Antti J Kangas
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, 90014, Finland
| | - Pasi Soininen
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, 90014, Finland.,NMR Metabolomics Laboratory, School of Pharmacy, University of Eastern Finland, Kuopio, 70211, Finland
| | | | - Lili Milani
- University of Tartu, Estonian Genome Center, Tartu, 51010, Estonia
| | - Andres Metspalu
- University of Tartu, Estonian Genome Center, Tartu, 51010, Estonia
| | - Satu Männistö
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Peter Würtz
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, 90014, Finland.,Diabetes and Obesity Research Program, University of Helsinki, Helsinki, Finland
| | - Johannes Kettunen
- National Institute for Health and Welfare, Helsinki, 00271, Finland.,Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, 90014, Finland.,NMR Metabolomics Laboratory, School of Pharmacy, University of Eastern Finland, Kuopio, 70211, Finland.,Biocenter Oulu, University of Oulu, Oulu, 90014, Finland
| | - Emma Raitoharju
- Department of Clinical Chemistry, Fimlab Laboratories and Finnish Cardiovascular Research Center-Tampere, Faculty of Medicine and Life Sciences, University of Tampere, 33014, Tampere, Finland
| | - Mika Kähönen
- Department of Clinical Physiology, University of Tampere and Tampere University Hospital, FI-33521, Tampere, Finland
| | - Markus Juonala
- Department of Medicine, University of Turku and Division of Medicine, Turku University Hospital, FI-20520, Turku, Finland.,Murdoch Childrens Research Institute, Parkville, 3052, Victoria, Australia
| | - Aarno Palotie
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, 00014, Finland.,Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.,Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA.,Psychiatric & Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Mika Ala-Korpela
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, 90014, Finland.,NMR Metabolomics Laboratory, School of Pharmacy, University of Eastern Finland, Kuopio, 70211, Finland.,Biocenter Oulu, University of Oulu, Oulu, 90014, Finland.,Computational Medicine, School of Social and Community Medicine, University of Bristol, Bristol, BS8 1TH, UK.,Medical Research Council Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, 00014, Finland.,Department of Public Health, University of Helsinki, Helsinki, 00014, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories and Finnish Cardiovascular Research Center-Tampere, Faculty of Medicine and Life Sciences, University of Tampere, 33014, Tampere, Finland
| | - Gad Abraham
- Systems Genomics Lab, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.,Department of Pathology, The University of Melbourne, Parkville, 3010, Victoria, Australia.,School of BioSciences, The University of Melbourne, Parkville, 3010, Victoria, Australia
| | - Olli Raitakari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, 20520, Finland.,Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, 20520, Finland
| | - Veikko Salomaa
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Markus Perola
- National Institute for Health and Welfare, Helsinki, 00271, Finland.,Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, 00014, Finland.,University of Tartu, Estonian Genome Center, Tartu, 51010, Estonia
| | - Michael Inouye
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, 3010, Victoria, Australia. .,Systems Genomics Lab, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia. .,Department of Pathology, The University of Melbourne, Parkville, 3010, Victoria, Australia. .,School of BioSciences, The University of Melbourne, Parkville, 3010, Victoria, Australia.
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321
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Kim H, Iizasa H, Kanehiro Y, Fekadu S, Yoshiyama H. Herpesviral microRNAs in Cellular Metabolism and Immune Responses. Front Microbiol 2017; 8:1318. [PMID: 28769892 PMCID: PMC5513955 DOI: 10.3389/fmicb.2017.01318] [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: 04/18/2017] [Accepted: 06/29/2017] [Indexed: 12/15/2022] Open
Abstract
The microRNAs (miRNAs) function as a key regulator in many biological processes through post-transcriptional suppression of messenger RNAs. Recent advancements have revealed that miRNAs are involved in many biological functions of cells. Not only host cells, but also some viruses encode miRNAs in their genomes. Viral miRNAs regulate cell proliferation, differentiation, apoptosis, and the cell cycle to establish infection and produce viral progeny. Particularly, miRNAs encoded by herpes virus families play integral roles in persistent viral infection either by regulation of metabolic processes or the immune response of host cells. The life-long persistent infection of gamma herpes virus subfamilies, such as Epstein-Barr virus and Kaposi's sarcoma-associated herpesvirus, induces host cells to malignant transformation. The unbalanced metabolic processes and evasion from host immune surveillance by viral miRNAs are induced either by direct targeting of key proteins or indirect regulation of multiple signaling pathways. We provide an overview of the pathogenic roles of viral miRNAs in cellular metabolism and immune responses during herpesvirus infection.
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Affiliation(s)
- Hyoji Kim
- Department of Microbiology, Faculty of Medicine, Shimane UniversityShimane, Japan
| | - Hisashi Iizasa
- Department of Microbiology, Faculty of Medicine, Shimane UniversityShimane, Japan
| | - Yuichi Kanehiro
- Department of Microbiology, Faculty of Medicine, Shimane UniversityShimane, Japan
| | - Sintayehu Fekadu
- Department of Microbiology, Faculty of Medicine, Shimane UniversityShimane, Japan
| | - Hironori Yoshiyama
- Department of Microbiology, Faculty of Medicine, Shimane UniversityShimane, Japan
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322
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Recent advances in CMV tropism, latency, and diagnosis during aging. GeroScience 2017; 39:251-259. [PMID: 28681110 DOI: 10.1007/s11357-017-9985-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 01/10/2023] Open
Abstract
Human cytomegalovirus (CMV) is one of the largest viruses known to cause human diseases. Chronic CMV infection, as defined by anti-CMV IgG serology, increases with age and is highly prevalent in older adults. It has complex biology with significant immunologic and health consequences. This article aims to summarize research findings presented at the 6th International Workshop on CMV and Immunosenescence that relate to advances in the areas of CMV tropism, latency, CMV manipulation of cell metabolism, and T cell memory inflation, as well as novel diagnostic evaluation and translational research of chronic CMV infection in older adults. Information summarized here represents the current state of knowledge in these important fields. Investigators have also identified a number of areas that deserve further and more in-depth investigation, including building more precise parallels between mouse CMV (mCMV) and human CMV (HCMV) research. It is hoped that this article will also stimulate engaging discussion on strategies and direction to advance the science to the next level.
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323
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Sikora D, Rocheleau L, Brown EG, Pelchat M. Influenza A virus cap-snatches host RNAs based on their abundance early after infection. Virology 2017. [PMID: 28646652 DOI: 10.1016/j.virol.2017.06.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The influenza A virus RNA polymerase cleaves the 5' ends of host RNAs and uses these RNA fragments as primers for viral mRNA synthesis. We performed deep sequencing of the 5' host-derived ends of the eight viral mRNAs of influenza A/Puerto Rico/8/1934 (H1N1) virus in infected A549 cells, and compared the population to those of A/Hong Kong/1/1968 (H3N2) and A/WSN/1933 (H1N1). In the three strains, the viral RNAs target different populations of host RNAs. Host RNAs are cap-snatched based on their abundance, and we found that RNAs encoding proteins involved in metabolism are overrepresented in the cap-snatched populations. Because this overrepresentation could be a reflection of the host response early after infection, and thus of the increased availability of these transcripts, our results suggest that host RNAs are cap-snatched mainly based on their abundance without preferential targeting.
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Affiliation(s)
- Dorota Sikora
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada K1H 8M5
| | - Lynda Rocheleau
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada K1H 8M5
| | - Earl G Brown
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada K1H 8M5
| | - Martin Pelchat
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada K1H 8M5.
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324
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Patel CH, Powell JD. Targeting T cell metabolism to regulate T cell activation, differentiation and function in disease. Curr Opin Immunol 2017; 46:82-88. [PMID: 28521236 DOI: 10.1016/j.coi.2017.04.006] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 01/09/2023]
Abstract
It is becoming increasingly clear that metabolic reprogramming plays a critical role in T cell activation, differentiation and function. To this end, cellular metabolism not only meets the energetic demands of T cells but also provides critical substrates for their growth and function. Furthermore, metabolites themselves are emerging as key regulators of immune responses. As the details of how metabolic reprogramming regulates immune function are revealed, new potential targets for modulating immune responses have emerged. Indeed, the distinct metabolic demands of different T cell subsets make them exquisitely sensitive to pharmacologic inhibitors of metabolism. In this review, we will describe the emerging strategies whereby targeting metabolism can shape the T cell response.
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Affiliation(s)
- Chirag H Patel
- Bloomberg-Kimmel Institute for Cancer Immunotherapy , Baltimore, MD, USA; Sidney-Kimmel Comprehensive Cancer Research Center, Department of Oncology, Johns Hopkins University School of Medicine, CRB I Rm 443, Baltimore, MD, USA
| | - Jonathan D Powell
- Bloomberg-Kimmel Institute for Cancer Immunotherapy , Baltimore, MD, USA; Sidney-Kimmel Comprehensive Cancer Research Center, Department of Oncology, Johns Hopkins University School of Medicine, CRB I Rm 443, Baltimore, MD, USA.
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325
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Glycolysis, Glutaminolysis, and Fatty Acid Synthesis Are Required for Distinct Stages of Kaposi's Sarcoma-Associated Herpesvirus Lytic Replication. J Virol 2017; 91:JVI.02237-16. [PMID: 28275189 DOI: 10.1128/jvi.02237-16] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 02/28/2017] [Indexed: 01/08/2023] Open
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent of Kaposi's sarcoma (KS). KSHV infection induces and requires multiple metabolic pathways, including the glycolysis, glutaminolysis, and fatty acid synthesis (FAS) pathways, for the survival of latently infected endothelial cells. To determine the metabolic requirements for productive KSHV infection, we induced lytic replication in the presence of inhibitors of different metabolic pathways. We found that glycolysis, glutaminolysis, and FAS are all required for maximal KSHV virus production and that these pathways appear to participate in virus production at different stages of the viral life cycle. Glycolysis and glutaminolysis, but not FAS, inhibit viral genome replication and, interestingly, are required for different early steps of lytic gene expression. Glycolysis is necessary for early gene transcription, while glutaminolysis is necessary for early gene translation but not transcription. Inhibition of FAS resulted in decreased production of extracellular virions but did not reduce intracellular genome levels or block intracellular virion production. However, in the presence of FAS inhibitors, the intracellular virions are noninfectious, indicating that FAS is required for virion assembly or maturation. KS tumors support both latent and lytic KSHV replication. Previous work has shown that multiple cellular metabolic pathways are required for latency, and we now show that these metabolic pathways are required for efficient lytic replication, providing novel therapeutic avenues for KS tumors.IMPORTANCE KSHV is the etiologic agent of Kaposi's sarcoma, the most common tumor of AIDS patients. KS spindle cells, the main tumor cells, all contain KSHV, mostly in the latent state, during which there is limited viral gene expression. However, a percentage of spindle cells support lytic replication and production of virus and these cells are thought to contribute to overall tumor formation. Our previous findings showed that latently infected cells are sensitive to inhibitors of cellular metabolic pathways, including glycolysis, glutaminolysis, and fatty acid synthesis. Here we found that these same inhibitors block the production of infectious virus from lytically infected cells, each at a different stage of viral replication. Therefore, inhibition of specific cellular metabolic pathways can both eliminate latently infected cells and block lytic replication, thereby inhibiting infection of new cells. Inhibition of metabolic pathways provides novel therapeutic approaches for KS tumors.
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326
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Zika virus infection reprograms global transcription of host cells to allow sustained infection. Emerg Microbes Infect 2017; 6:e24. [PMID: 28442752 PMCID: PMC5457678 DOI: 10.1038/emi.2017.9] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 12/08/2016] [Accepted: 01/23/2017] [Indexed: 02/08/2023]
Abstract
Zika virus (ZIKV) is an emerging virus causally linked to neurological disorders, including congenital microcephaly and Guillain-Barré syndrome. There are currently no targeted therapies for ZIKV infection. To identify novel antiviral targets and to elucidate the mechanisms by which ZIKV exploits the host cell machinery to support sustained replication, we analyzed the transcriptomic landscape of human microglia, fibroblast, embryonic kidney and monocyte-derived macrophage cell lines before and after ZIKV infection. The four cell types differed in their susceptibility to ZIKV infection, consistent with differences in their expression of viral response genes before infection. Clustering and network analyses of genes differentially expressed after ZIKV infection revealed changes related to the adaptive immune system, angiogenesis and host metabolic processes that are conducive to sustained viral production. Genes related to the adaptive immune response were downregulated in microglia cells, suggesting that ZIKV effectively evades the immune response after reaching the central nervous system. Like other viruses, ZIKV diverts host cell resources and reprograms the metabolic machinery to support RNA metabolism, ATP production and glycolysis. Consistent with these transcriptomic analyses, nucleoside metabolic inhibitors abrogated ZIKV replication in microglia cells.
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327
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Kommadath A, Bao H, Choi I, Reecy JM, Koltes JE, Fritz-Waters E, Eisley CJ, Grant JR, Rowland RRR, Tuggle CK, Dekkers JCM, Lunney JK, Guan LL, Stothard P, Plastow GS. Genetic architecture of gene expression underlying variation in host response to porcine reproductive and respiratory syndrome virus infection. Sci Rep 2017; 7:46203. [PMID: 28393889 PMCID: PMC5385538 DOI: 10.1038/srep46203] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 03/13/2017] [Indexed: 01/21/2023] Open
Abstract
It has been shown that inter-individual variation in host response to porcine reproductive and respiratory syndrome (PRRS) has a heritable component, yet little is known about the underlying genetic architecture of gene expression in response to PRRS virus (PRRSV) infection. Here, we integrated genome-wide genotype, gene expression, viremia level, and weight gain data to identify genetic polymorphisms that are associated with variation in inter-individual gene expression and response to PRRSV infection in pigs. RNA-seq analysis of peripheral blood samples collected just prior to experimental challenge (day 0) and at 4, 7, 11 and 14 days post infection from 44 pigs revealed 6,430 differentially expressed genes at one or more time points post infection compared to the day 0 baseline. We mapped genetic polymorphisms that were associated with inter-individual differences in expression at each day and found evidence of cis-acting expression quantitative trait loci (cis-eQTL) for 869 expressed genes (qval < 0.05). Associations between cis-eQTL markers and host response phenotypes using 383 pigs suggest that host genotype-dependent differences in expression of GBP5, GBP6, CCHCR1 and CMPK2 affect viremia levels or weight gain in response to PRRSV infection.
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Affiliation(s)
- Arun Kommadath
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
| | - Hua Bao
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
- Department of Research and Development, Geneseeq Technology Inc., Toronto M5G 1L7, ON, Canada
| | - Igseo Choi
- USDA-ARS, BARC, APDL, Building1040, Beltsville 20705, MD, USA
| | - James M. Reecy
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
| | - James E. Koltes
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
- Department of Animal Science, University of Arkansas, AFLS B106D, Fayetteville, AR, 72703, USA
| | - Elyn Fritz-Waters
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
| | - Chris J. Eisley
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
- Department of Statistics, Iowa State University, 1121 Snedecor Hall, Ames, IA 50011, USA
| | - Jason R. Grant
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
| | - Robert R. R. Rowland
- College of Veterinary Medicine, Kansas State University, K-231 Mosier Hall, Manhattan 66506, KS, USA
| | - Christopher K. Tuggle
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
| | - Jack C. M. Dekkers
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames 50011, IA, USA
| | - Joan K. Lunney
- USDA-ARS, BARC, APDL, Building1040, Beltsville 20705, MD, USA
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
| | - Paul Stothard
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
| | - Graham S. Plastow
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, AB, Canada
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328
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Magistroni R, Boletta A. Defective glycolysis and the use of 2-deoxy-D-glucose in polycystic kidney disease: from animal models to humans. J Nephrol 2017; 30:511-519. [PMID: 28390001 DOI: 10.1007/s40620-017-0395-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/27/2017] [Indexed: 02/06/2023]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is an inherited renal disease characterized by bilateral renal cyst formation. ADPKD is one of the most common rare disorders, accounting for ~10% of all patients with end-stage renal disease (ESRD). ADPKD is a chronic disorder in which the gradual expansion of cysts that form in a minority of nephrons eventually causes loss of renal function due to the compression and degeneration of the surrounding normal parenchyma. Numerous deranged pathways have been identified in the cyst-lining epithelia, prompting the design of potential therapies. Several of these potential treatments have proved effective in slowing down disease progression in pre-clinical animal studies, while only one has subsequently been proven to effectively slow down disease progression in patients, and it has recently been approved for therapy in Europe, Canada and Japan. Among the affected cellular functions and pathways, recent investigations have described metabolic derangement in ADPKD as a major trait offering additional opportunities for targeted therapies. In particular, increased aerobic glycolysis (the Warburg effect) has been described as a prominent feature of ADPKD kidneys and its inhibition using the glucose analogue 2-deoxy-D-glucose (2DG) proved effective in slowing down disease progression in preclinical models of the disease. At the same time, previous clinical experiences have been reported with 2DG, showing that this compound is well tolerated in humans with minimal and reversible side effects. In this work, we review the literature and speculate that 2DG could be a good candidate for a clinical trial in humans affected by ADPKD.
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Affiliation(s)
- Riccardo Magistroni
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Via Olgettina, 58, 20132, Milan, Italy
- Division of Nephrology and Hypertension, San Raffaele Hospital, Milan, Italy
- Division of Nephrology and Dialysis, AOU Policlinico di Modena, Università di Modena e Reggio Emilia, Modena, Italy
| | - Alessandra Boletta
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Via Olgettina, 58, 20132, Milan, Italy.
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329
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Manchester M, Anand A. Metabolomics: Strategies to Define the Role of Metabolism in Virus Infection and Pathogenesis. Adv Virus Res 2017; 98:57-81. [PMID: 28433052 DOI: 10.1016/bs.aivir.2017.02.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Metabolomics is an analytical profiling technique for measuring and comparing large numbers of metabolites present in biological samples. Combining high-throughput analytical chemistry and multivariate data analysis, metabolomics offers a window on metabolic mechanisms. Because they intimately utilize and often rewire host metabolism, viruses are an excellent choice to study by metabolomics techniques. Studies of the effects of viruses on metabolism during replication in vitro and infection in animal models or human subjects have provided novel insights into these networks and provided new targets for therapy and biomarker development. Identifying the common metabolic pathways utilized by viruses has the potential to reveal those that can be targeted by broad-spectrum antiviral and vaccine approaches.
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Affiliation(s)
- Marianne Manchester
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, Basel, Switzerland.
| | - Anisha Anand
- Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, Basel, Switzerland
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330
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Sychev ZE, Hu A, DiMaio TA, Gitter A, Camp ND, Noble WS, Wolf-Yadlin A, Lagunoff M. Integrated systems biology analysis of KSHV latent infection reveals viral induction and reliance on peroxisome mediated lipid metabolism. PLoS Pathog 2017; 13:e1006256. [PMID: 28257516 PMCID: PMC5352148 DOI: 10.1371/journal.ppat.1006256] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/15/2017] [Accepted: 02/22/2017] [Indexed: 12/22/2022] Open
Abstract
Kaposi’s Sarcoma associated Herpesvirus (KSHV), an oncogenic, human gamma-herpesvirus, is the etiological agent of Kaposi’s Sarcoma the most common tumor of AIDS patients world-wide. KSHV is predominantly latent in the main KS tumor cell, the spindle cell, a cell of endothelial origin. KSHV modulates numerous host cell-signaling pathways to activate endothelial cells including major metabolic pathways involved in lipid metabolism. To identify the underlying cellular mechanisms of KSHV alteration of host signaling and endothelial cell activation, we identified changes in the host proteome, phosphoproteome and transcriptome landscape following KSHV infection of endothelial cells. A Steiner forest algorithm was used to integrate the global data sets and, together with transcriptome based predicted transcription factor activity, cellular networks altered by latent KSHV were predicted. Several interesting pathways were identified, including peroxisome biogenesis. To validate the predictions, we showed that KSHV latent infection increases the number of peroxisomes per cell. Additionally, proteins involved in peroxisomal lipid metabolism of very long chain fatty acids, including ABCD3 and ACOX1, are required for the survival of latently infected cells. In summary, novel cellular pathways altered during herpesvirus latency that could not be predicted by a single systems biology platform, were identified by integrated proteomics and transcriptomics data analysis and when correlated with our metabolomics data revealed that peroxisome lipid metabolism is essential for KSHV latent infection of endothelial cells. Kaposi’s Sarcoma herpesvirus (KSHV) is the etiologic agent of Kaposi’s Sarcoma, the most common tumor of AIDS patients. KSHV modulates host cell signaling and metabolism to maintain a life-long latent infection. To unravel the underlying cellular mechanisms modulated by KSHV, we used multiple global systems biology platforms to identify and integrate changes in both cellular protein expression and transcription following KSHV infection of endothelial cells, the relevant cell type for KS tumors. The analysis identified several interesting pathways including peroxisome biogenesis. Peroxisomes are small cytoplasmic organelles involved in redox reactions and lipid metabolism. KSHV latent infection increases the number of peroxisomes per cell and proteins involved in peroxisomal lipid metabolism are required for the survival of latently infected cells. In summary, through integration of multiple global systems biology analyses we were able to identify novel pathways that could not be predicted by one platform alone and found that lipid metabolism in a small cytoplasmic organelle is necessary for the survival of latent infection with a herpesvirus.
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Affiliation(s)
- Zoi E. Sychev
- Molecular and Cellular Biology Program, University of Washington, Seattle, Washington, United States of America
- Department of Microbiology, University of Washington, Seattle, Washington, United States of America
| | - Alex Hu
- Department of Genome Science, University of Washington, Seattle, Washington, United States of America
| | - Terri A. DiMaio
- Department of Microbiology, University of Washington, Seattle, Washington, United States of America
| | - Anthony Gitter
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison and Morgridge Institute for Research, Madison, Wisconsin, USA
| | - Nathan D. Camp
- Department of Genome Science, University of Washington, Seattle, Washington, United States of America
| | - William S. Noble
- Department of Genome Science, University of Washington, Seattle, Washington, United States of America
| | - Alejandro Wolf-Yadlin
- Department of Genome Science, University of Washington, Seattle, Washington, United States of America
- * E-mail: (ML); (AWY)
| | - Michael Lagunoff
- Department of Microbiology, University of Washington, Seattle, Washington, United States of America
- * E-mail: (ML); (AWY)
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331
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Abstract
PURPOSE OF REVIEW Obesity is a multifactorial disease that is now endemic throughout most of the world. Although addressing proximate causes of obesity (excess energy intake and reduced energy expenditure) have been longstanding global health priorities, the problem has continued to worsen at the global level. RECENT FINDINGS Numerous microbial agents cause obesity in various experimental models-a phenomena known as infectobesity. Several of the same agents alter metabolic function in human cells and are associated with human obesity or metabolic dysfunction in humans. We address the evidence for a role in the genesis of obesity for viral agents in five broad categories: adenoviridae, herpesviridae, phages, transmissible spongiform encephalopathies (slow virus), and other encephalitides and hepatitides. Despite the importance of this topic area, there are many persistent knowledge gaps that need to be resolved. We discuss factors motivating further research and recommend that future infectobesity investigation should be more comprehensive, leveraged, interventional, and patient-centered.
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Affiliation(s)
- Jameson D Voss
- United States Air Force School of Aerospace Medicine, Epidemiology Consult Service Division, 2510 Fifth Street, Building 840, Wright-Patterson AFB, OH, 45433, USA
| | - Nikhil V Dhurandhar
- Department of Nutritional Sciences, Texas Tech University, Box 41270, Lubbock, TX, 79409-1240, USA.
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332
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SEN SATARUPA, DESHMANE SATISHL, KAMINSKI RAFAL, AMINI SHOHREH, DATTA PRASUNK. Non-Metabolic Role of PKM2 in Regulation of the HIV-1 LTR. J Cell Physiol 2017; 232:517-525. [PMID: 27249540 PMCID: PMC5714288 DOI: 10.1002/jcp.25445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/31/2016] [Indexed: 12/31/2022]
Abstract
Identification of cellular proteins, in addition to already known transcription factors such as NF-κB, Sp1, C-EBPβ, NFAT, ATF/CREB, and LEF-1, which interact with the HIV-1 LTR, is critical in understanding the mechanism of HIV-1 replication in monocytes/macrophages. Our studies demonstrate upregulation of pyruvate kinase isoform M2 (PKM2) expression during HIV-1SF162 infection of monocyte/macrophages and reactivation of HIV-1 in U1 cells, a macrophage model of latency. We observed that HIV-1SF162 infection of monocyte/macrophages and reactivation of HIV-1 in U1 cells by PMA resulted in increased levels of nuclear PKM2 compared to PMA-induced U937 cells. Furthermore, there was a significant increase in the nuclear dimeric form of PKM2 in the PMA-induced U1 cells in comparison to PMA-induced U937 cells. We focused on understanding the potential role of PKM2 in HIV-1 LTR transactivation. Chromatin immunoprecipitation (ChIP) analysis in PMA-activated U1 and TZM-bl cells demonstrated the interaction of PKM2 with the HIV-1 LTR. Our studies show that overexpression of PKM2 results in transactivation of HIV-1 LTR-luciferase reporter in U937, U-87 MG, and TZM-bl cells. Using various truncated constructs of the HIV-1 LTR, we mapped the region spanning -120 bp to -80 bp to be essential for PKM2-mediated transactivation. This region contains the NF-κB binding site and deletion of this site attenuated PKM2-mediated activation of HIV-1 LTR. Immunoprecipitation experiments using U1 cell lysates demonstrated a physical interaction between PKM2 and the p65 subunit of NF-κB. These observations demonstrate for the first time that PKM2 is a transcriptional co-activator of HIV-1 LTR. J. Cell. Physiol. 232: 517-525, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- SATARUPA SEN
- Department of Neuroscience, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
- Department of Biology, College of Science and Technology, Philadelphia, Pennsylvania
| | - SATISH L. DESHMANE
- Department of Neuroscience, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - RAFAL KAMINSKI
- Department of Neuroscience, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - SHOHREH AMINI
- Department of Neuroscience, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
- Department of Biology, College of Science and Technology, Philadelphia, Pennsylvania
| | - PRASUN K. DATTA
- Department of Neuroscience, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
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333
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Egnatchik RA, Brittain EL, Shah AT, Fares WH, Ford HJ, Monahan K, Kang CJ, Kocurek EG, Zhu S, Luong T, Nguyen TT, Hysinger E, Austin ED, Skala MC, Young JD, Roberts LJ, Hemnes AR, West J, Fessel JP. Dysfunctional BMPR2 signaling drives an abnormal endothelial requirement for glutamine in pulmonary arterial hypertension. Pulm Circ 2017; 7:186-199. [PMID: 28680578 PMCID: PMC5448547 DOI: 10.1086/690236] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/16/2016] [Indexed: 12/22/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is increasingly recognized as a systemic disease driven by alteration in the normal functioning of multiple metabolic pathways affecting all of the major carbon substrates, including amino acids. We found that human pulmonary hypertension patients (WHO Group I, PAH) exhibit systemic and pulmonary-specific alterations in glutamine metabolism, with the diseased pulmonary vasculature taking up significantly more glutamine than that of controls. Using cell culture models and transgenic mice expressing PAH-causing BMPR2 mutations, we found that the pulmonary endothelium in PAH shunts significantly more glutamine carbon into the tricarboxylic acid (TCA) cycle than wild-type endothelium. Increased glutamine metabolism through the TCA cycle is required by the endothelium in PAH to survive, to sustain normal energetics, and to manifest the hyperproliferative phenotype characteristic of disease. The strict requirement for glutamine is driven by loss of sirtuin-3 (SIRT3) activity through covalent modification by reactive products of lipid peroxidation. Using 2-hydroxybenzylamine, a scavenger of reactive lipid peroxidation products, we were able to preserve SIRT3 function, to normalize glutamine metabolism, and to prevent the development of PAH in BMPR2 mutant mice. In PAH, targeting glutamine metabolism and the mechanisms that underlie glutamine-driven metabolic reprogramming represent a viable novel avenue for the development of potentially disease-modifying therapeutics that could be rapidly translated to human studies.
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Affiliation(s)
- Robert A Egnatchik
- Children's Medical Center Research Institute, University of Texas Southwestern, Dallas, TX, USA.,Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Evan L Brittain
- Division of Cardiovascular Medicine and the Vanderbilt Translational and Clinical Cardiovascular Center, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Amy T Shah
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Wassim H Fares
- Section of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, Yale University, New Haven, CT, USA
| | - H James Ford
- Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, University of North Carolina Chapel Hill, Chapel Hill, NC, USA
| | - Ken Monahan
- Division of Cardiovascular Medicine and the Vanderbilt Translational and Clinical Cardiovascular Center, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Christie J Kang
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Emily G Kocurek
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shijun Zhu
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thong Luong
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thuy T Nguyen
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Erik Hysinger
- Division of Pulmonary Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Eric D Austin
- Division of Pulmonary Medicine, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Melissa C Skala
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA.,Department of Cancer Biology, Vanderbilt University, Nashville, TN, USA
| | - Jamey D Young
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA.,Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - L Jackson Roberts
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Anna R Hemnes
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - James West
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA.,Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Joshua P Fessel
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pharmacology, Vanderbilt University, Nashville, TN, USA.,Department of Cancer Biology, Vanderbilt University, Nashville, TN, USA
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334
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Shrinet J, Srivastava P, Sunil S. Transcriptome analysis of Aedes aegypti in response to mono-infections and co-infections of dengue virus-2 and chikungunya virus. Biochem Biophys Res Commun 2017; 492:617-623. [PMID: 28161634 DOI: 10.1016/j.bbrc.2017.01.162] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 12/24/2022]
Abstract
Chikungunya virus (CHIKV) and Dengue virus (DENV) spread via the bite of infected Aedes mosquitoes. Both these viruses exist as co-infections in the host as well as the vector and are known to exploit their cellular machinery for their replication. While there are studies reporting the changes in Aedes transcriptome when infected with DENV and CHIKV individually, the effect both these viruses have on the mosquitoes when present as co-infections is not clearly understood. In the present study, we infected Aedes aegypti mosquitoes with DENV and CHIKV individually and as co-infection through nanoinjections. We performed high throughput RNA sequencing of the infected Aedes aegypti to understand the changes in the Aedes transcriptome during the early stages of infection, i.e., 24 h post infection and compared the transcriptome profiles during DENV and CHIKV mono-infections with that of co-infections. We identified 190 significantly regulated genes identified in CHIKV infected library, 37 genes from DENV library and 100 genes from co-infected library and they were classified into different pathways. Our study reveal that distinct pathways and transcripts are being regulated during the three types of infection states in Aedes aegypti mosquitoes.
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Affiliation(s)
- Jatin Shrinet
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Pratibha Srivastava
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Sujatha Sunil
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110067, India.
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335
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González ME. The HIV-1 Vpr Protein: A Multifaceted Target for Therapeutic Intervention. Int J Mol Sci 2017; 18:ijms18010126. [PMID: 28075409 PMCID: PMC5297760 DOI: 10.3390/ijms18010126] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/22/2016] [Accepted: 01/03/2017] [Indexed: 12/16/2022] Open
Abstract
The human immunodeficiency virus type 1 (HIV-1) Vpr protein is an attractive target for antiretroviral drug development. The conservation both of the structure along virus evolution and the amino acid sequence in viral isolates from patients underlines the importance of Vpr for the establishment and progression of HIV-1 disease. While its contribution to virus replication in dividing and non-dividing cells and to the pathogenesis of HIV-1 in many different cell types, both extracellular and intracellular forms, have been extensively studied, its precise mechanism of action nevertheless remains enigmatic. The present review discusses how the apparently multifaceted interplay between Vpr and host cells may be due to the impairment of basic metabolic pathways. Vpr protein modifies host cell energy metabolism, oxidative status, and proteasome function, all of which are likely conditioned by the concentration and multimerization of the protein. The characterization of Vpr domains along with new laboratory tools for the assessment of their function has become increasingly relevant in recent years. With these advances, it is conceivable that drug discovery efforts involving Vpr-targeted antiretrovirals will experience substantial growth in the coming years.
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Affiliation(s)
- María Eugenia González
- Unidad de Expresión Viral, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera de Majadahonda-Pozuelo Km 2, Majadahonda, 28220 Madrid, Spain.
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336
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EBV Infection and Glucose Metabolism in Nasopharyngeal Carcinoma. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1018:75-90. [DOI: 10.1007/978-981-10-5765-6_6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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337
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Fritsch SD, Weichhart T. Effects of Interferons and Viruses on Metabolism. Front Immunol 2016; 7:630. [PMID: 28066439 PMCID: PMC5174094 DOI: 10.3389/fimmu.2016.00630] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/08/2016] [Indexed: 12/12/2022] Open
Abstract
Interferons (IFNs) are potent pleiotropic cytokines that broadly alter cellular functions in response to viral and other infections. These alterations include changes in protein synthesis, proliferation, membrane composition, and the nutritional microenvironment. Recent evidence suggests that antiviral responses are supported by an IFN-induced rewiring of the cellular metabolism. In this review, we discuss the roles of type I and type II IFNs in regulating the cellular metabolism and biosynthetic reactions. Furthermore, we give an overview of how viruses themselves affect these metabolic activities to promote their replication. In addition, we focus on the lipid as well as amino acid metabolisms, through which IFNs exert potent antiviral and immunomodulatory activities. Conversely, the expression of IFNs is controlled by the nutrient sensor mammalian target of rapamycin or by direct reprograming of lipid metabolic pathways. These findings establish a mutual relationship between IFN production and metabolic core processes.
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Affiliation(s)
| | - Thomas Weichhart
- Institute of Medical Genetics, Medical University of Vienna , Vienna , Austria
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338
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Berrios C, Padi M, Keibler MA, Park DE, Molla V, Cheng J, Lee SM, Stephanopoulos G, Quackenbush J, DeCaprio JA. Merkel Cell Polyomavirus Small T Antigen Promotes Pro-Glycolytic Metabolic Perturbations Required for Transformation. PLoS Pathog 2016; 12:e1006020. [PMID: 27880818 PMCID: PMC5120958 DOI: 10.1371/journal.ppat.1006020] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Accepted: 10/23/2016] [Indexed: 02/01/2023] Open
Abstract
Merkel cell polyomavirus (MCPyV) is an etiological agent of Merkel cell carcinoma (MCC), a highly aggressive skin cancer. The MCPyV small tumor antigen (ST) is required for maintenance of MCC and can transform normal cells. To gain insight into cellular perturbations induced by MCPyV ST, we performed transcriptome analysis of normal human fibroblasts with inducible expression of ST. MCPyV ST dynamically alters the cellular transcriptome with increased levels of glycolytic genes, including the monocarboxylate lactate transporter SLC16A1 (MCT1). Extracellular flux analysis revealed increased lactate export reflecting elevated aerobic glycolysis in ST expressing cells. Inhibition of MCT1 activity suppressed the growth of MCC cell lines and impaired MCPyV-dependent transformation of IMR90 cells. Both NF-κB and MYC have been shown to regulate MCT1 expression. While MYC was required for MCT1 induction, MCPyV-induced MCT1 levels decreased following knockdown of the NF-κB subunit RelA, supporting a synergistic activity between MCPyV and MYC in regulating MCT1 levels. Several MCC lines had high levels of MYCL and MYCN but not MYC. Increased levels of MYCL was more effective than MYC or MYCN in increasing extracellular acidification in MCC cells. Our results demonstrate the effects of MCPyV ST on the cellular transcriptome and reveal that transformation is dependent, at least in part, on elevated aerobic glycolysis. In 2008, Merkel cell polyomavirus (MCPyV) was identified as clonally integrated in a majority of Merkel cell carcinomas (MCC), a rare but highly aggressive neuroendocrine carcinoma of the skin. Since then, studies have highlighted the roles of the MCPyV T antigens in promoting and sustaining MCC oncogenesis. In particular, MCPyV small T antigen (ST) has oncogenic activity in vivo and in vitro. We performed transcriptome analysis of normal human fibroblasts with inducible expression of MCPyV ST and observed significant alterations in levels of metabolic pathway genes, particularly those involved in glycolysis. MCT1, a major monocarboxylate transporter, was rapidly induced following ST expression and inhibition of MCT1 activity reduced the ST growth promoting and transforming activities. The metabolic perturbations induced by this oncogenic human polyomavirus reflect a potent transforming mechanism of MCPyV ST.
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Affiliation(s)
- Christian Berrios
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Program in Virology, Graduate School of Arts and Sciences, Harvard University, Cambridge, Massachusetts, United States of America
| | - Megha Padi
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Mark A. Keibler
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Donglim Esther Park
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Program in Virology, Graduate School of Arts and Sciences, Harvard University, Cambridge, Massachusetts, United States of America
| | - Vadim Molla
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
| | - Jingwei Cheng
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Soo Mi Lee
- Program in Virology, Graduate School of Arts and Sciences, Harvard University, Cambridge, Massachusetts, United States of America
| | - Gregory Stephanopoulos
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - John Quackenbush
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - James A. DeCaprio
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
- Program in Virology, Graduate School of Arts and Sciences, Harvard University, Cambridge, Massachusetts, United States of America
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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339
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Strmiskova M, Desrochers GF, Shaw TA, Powdrill MH, Lafreniere MA, Pezacki JP. Chemical Methods for Probing Virus-Host Proteomic Interactions. ACS Infect Dis 2016; 2:773-786. [PMID: 27933785 DOI: 10.1021/acsinfecdis.6b00084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Interactions between host and pathogen proteins constitute an important aspect of both infectivity and the host immune response. Different viruses have evolved complex mechanisms to hijack host-cell machinery and metabolic pathways to redirect resources and energy flow toward viral propagation. These interactions are often critical to the virus, and thus understanding these interactions at a molecular level gives rise to opportunities to develop novel antiviral strategies for therapeutic intervention. This review summarizes current advances in chemoproteomic methods for studying these molecular altercations between different viruses and their hosts.
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Affiliation(s)
- Miroslava Strmiskova
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
| | - Geneviève F. Desrochers
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
| | - Tyler A. Shaw
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
| | - Megan H. Powdrill
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
| | - Matthew A. Lafreniere
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
| | - John Paul Pezacki
- Department of Chemistry and Biomolecular Sciences, Centre
for Chemical and Synthetic Biology, University of Ottawa, 10 Marie-Curie Private, Ottawa, Ontario, Canada K1N 6N5
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340
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El Costa H, Gouilly J, Mansuy JM, Chen Q, Levy C, Cartron G, Veas F, Al-Daccak R, Izopet J, Jabrane-Ferrat N. ZIKA virus reveals broad tissue and cell tropism during the first trimester of pregnancy. Sci Rep 2016; 6:35296. [PMID: 27759009 PMCID: PMC5069472 DOI: 10.1038/srep35296] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/27/2016] [Indexed: 12/12/2022] Open
Abstract
The outbreak of the Zika Virus (ZIKV) and its association with fetal abnormalities have raised worldwide concern. However, the cellular tropism and the mechanisms of ZIKV transmission to the fetus during early pregnancy are still largely unknown. Therefore, we ex vivo modeled the ZIKV transmission at the maternal-fetal interface using organ culture from first trimester pregnancy samples. Here, we provide evidence that ZIKV strain circulating in Brazil infects and damages tissue architecture of the maternal decidua basalis, the fetal placenta and umbilical cord. We also show that ZIKV replicates differentially in a wide range of maternal and fetal cells, including decidual fibroblasts and macrophages, trophoblasts, Hofbauer cells as well as umbilical cord mesenchymal stem cells. The striking cellular tropism of ZIKV and its cytopathic-induced tissue injury during the first trimester of pregnancy could provide an explanation for the irreversible congenital damages.
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Affiliation(s)
- Hicham El Costa
- CPTP, INSERM U1043, CNRS UMR5282, Université Toulouse III, 31024 Toulouse, France.,Laboratoire de Virologie, IFB, CHU Toulouse, 31059 Toulouse, France
| | - Jordi Gouilly
- CPTP, INSERM U1043, CNRS UMR5282, Université Toulouse III, 31024 Toulouse, France
| | | | - Qian Chen
- CPTP, INSERM U1043, CNRS UMR5282, Université Toulouse III, 31024 Toulouse, France
| | - Claude Levy
- Service de Gynécologie-Obstétrique, Clinique Sarrus-Teinturiers, 31300 Toulouse, France
| | - Géraldine Cartron
- Service de Gynécologie-Obstétrique, CHU Toulouse, 31059 Toulouse, France
| | - Francisco Veas
- IRD, UMR-Ministère de la Défense, Faculté de Pharmacie, Université de Montpellier, 34094 Montpellier, France
| | - Reem Al-Daccak
- INSERM UMRS976, Université Paris Diderot, Hôpital Saint-Louis, 75010 Paris, France
| | - Jacques Izopet
- CPTP, INSERM U1043, CNRS UMR5282, Université Toulouse III, 31024 Toulouse, France.,Laboratoire de Virologie, IFB, CHU Toulouse, 31059 Toulouse, France
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341
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Jiang H, Shi H, Sun M, Wang Y, Meng Q, Guo P, Cao Y, Chen J, Gao X, Li E, Liu J. PFKFB3-Driven Macrophage Glycolytic Metabolism Is a Crucial Component of Innate Antiviral Defense. THE JOURNAL OF IMMUNOLOGY 2016; 197:2880-90. [DOI: 10.4049/jimmunol.1600474] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 08/01/2016] [Indexed: 01/27/2023]
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342
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Carinhas N, Koshkin A, Pais DAM, Alves PM, Teixeira AP. 13 C-metabolic flux analysis of human adenovirus infection: Implications for viral vector production. Biotechnol Bioeng 2016; 114:195-207. [PMID: 27477740 DOI: 10.1002/bit.26063] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 07/24/2016] [Accepted: 07/26/2016] [Indexed: 01/08/2023]
Abstract
Adenoviruses are human pathogens increasingly used as gene therapy and vaccination vectors. However, their impact on cell metabolism is poorly characterized. We performed carbon labeling experiments with [1,2-13 C]glucose or [U-13 C]glutamine to evaluate metabolic alterations in the amniocyte-derived, E1-transformed 1G3 cell line during production of a human adenovirus type 5 vector (AdV5). Nonstationary 13 C-metabolic flux analysis revealed increased fluxes of glycolysis (17%) and markedly PPP (over fourfold) and cytosolic AcCoA formation (nearly twofold) following infection of growing cells. Interestingly, infection of growth-arrested cells increased overall carbon flow even more, including glutamine anaplerosis and TCA cycle activity (both over 1.5-fold), but was unable to stimulate the PPP and was associated with a steep drop in AdV5 replication (almost 80%). Our results underscore the importance of nucleic and fatty acid biosynthesis for adenovirus replication. Overall, we portray a metabolic blueprint of human adenovirus infection, highlighting similarities with other viruses and cancer, and suggest strategies to improve AdV5 production. Biotechnol. Bioeng. 2017;114: 195-207. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nuno Carinhas
- iBET, Instituto de Biologia Experimental e Tecnológica, Avenida da República, Oeiras, 2781-157, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, Oeiras, 2780-157, Portugal
| | - Alexey Koshkin
- iBET, Instituto de Biologia Experimental e Tecnológica, Avenida da República, Oeiras, 2781-157, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, Oeiras, 2780-157, Portugal
| | - Daniel A M Pais
- iBET, Instituto de Biologia Experimental e Tecnológica, Avenida da República, Oeiras, 2781-157, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, Oeiras, 2780-157, Portugal
| | - Paula M Alves
- iBET, Instituto de Biologia Experimental e Tecnológica, Avenida da República, Oeiras, 2781-157, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, Oeiras, 2780-157, Portugal
| | - Ana P Teixeira
- iBET, Instituto de Biologia Experimental e Tecnológica, Avenida da República, Oeiras, 2781-157, Portugal.,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República, Oeiras, 2780-157, Portugal
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343
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Pyruvate dehydrogenase kinase regulates hepatitis C virus replication. Sci Rep 2016; 6:30846. [PMID: 27471054 PMCID: PMC4965757 DOI: 10.1038/srep30846] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 07/11/2016] [Indexed: 12/11/2022] Open
Abstract
During replication, hepatitis C virus (HCV) utilizes macromolecules produced by its host cell. This process requires host cellular metabolic reprogramming to favor elevated levels of aerobic glycolysis. Therefore, we evaluated whether pyruvate dehydrogenase kinase (PDK), a mitochondrial enzyme that promotes aerobic glycolysis, can regulate HCV replication. Levels of c-Myc, hypoxia-inducible factor-1α (HIF-1α), PDK1, PDK3, glucokinase, and serine biosynthetic enzymes were compared between HCV-infected and uninfected human liver and Huh-7.5 cells infected with or without HCV. Protein and mRNA expression of c-Myc, HIF-1α, and glycolytic enzymes were significantly higher in HCV-infected human liver and hepatocytes than in uninfected controls. This increase was accompanied by upregulation of serine biosynthetic enzymes, suggesting cellular metabolism was altered toward facilitated nucleotide synthesis essential for HCV replication. JQ1, a c-Myc inhibitor, and dichloroacetate (DCA), a PDK inhibitor, decreased the expression of glycolytic and serine synthetic enzymes in HCV-infected hepatocytes, resulting in suppressed viral replication. Furthermore, when co-administered with IFN-α or ribavirin, DCA further inhibited viral replication. In summary, HCV reprograms host cell metabolism to favor glycolysis and serine biosynthesis; this is mediated, at least in part, by increased PDK activity, which provides a surplus of nucleotide precursors. Therefore, blocking PDK activity might have therapeutic benefits against HCV replication.
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344
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Matheson NJ, Greenwood EJ, Lehner PJ. Manipulation of immunometabolism by HIV-accessories to the crime? Curr Opin Virol 2016; 19:65-70. [PMID: 27448768 DOI: 10.1016/j.coviro.2016.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 06/17/2016] [Accepted: 06/29/2016] [Indexed: 10/21/2022]
Abstract
Evolutionary pressure has produced an 'arms race' between cellular restriction factors (limiting viral replication) and viral proteins (overcoming host restriction). The host factors SAMHD1 and SLFN1 patrol metabolic bottlenecks required for HIV replication. Conversely, the HIV accessory proteins Vpx, Vpu and Nef manipulate cellular metabolism to enable viral replication. Recent work identifying Vpu-mediated downregulation of the alanine transporter SNAT1 and Nef-mediated downregulation of the serine carriers SERINC3/5 has uncovered the importance of HIV manipulation of the amino acid supply. Interference with CD4(+) T-cell amino acid metabolism suggests a novel paradigm of viral immunomodulation, and signposts fundamental aspects of lymphocyte biology.
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Affiliation(s)
- Nicholas J Matheson
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK.
| | - Edward Jd Greenwood
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK
| | - Paul J Lehner
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK.
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345
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Lagunoff M. Activation of cellular metabolism during latent Kaposi's Sarcoma herpesvirus infection. Curr Opin Virol 2016; 19:45-9. [PMID: 27434732 DOI: 10.1016/j.coviro.2016.06.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/22/2016] [Accepted: 06/29/2016] [Indexed: 02/07/2023]
Abstract
Herpesviruses can establish latent infections in the host with severely limited viral gene expression. Kaposi's Sarcoma-associated herpesvirus (KSHV) is found predominantly in the latent state in the main KS tumor cell, a cell of endothelial origin. While many viruses alter host cell metabolism during productive infection, latent KSHV infection of endothelial cells activates metabolic pathways that are activated in many cancer cells. Inhibition of these major metabolic pathways leads to apoptotic cell death of the latently infected cells. The study of KSHV activation of metabolism may lead to novel therapeutic options for eliminating latent infection of gamma-herpesviruses and could also lead to a deeper mechanistic understanding of how to target cancer cell metabolism.
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Affiliation(s)
- Michael Lagunoff
- Department of Microbiology, University of Washington, 1959 N.E. Pacific St., Box 347252, Seattle, WA 98195, United States.
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346
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Assmann N, Finlay DK. Metabolic regulation of immune responses: therapeutic opportunities. J Clin Invest 2016; 126:2031-9. [PMID: 27249676 DOI: 10.1172/jci83005] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Immune cell metabolism is dynamically regulated in parallel with the substantial changes in cellular function that accompany immune cell activation. While these changes in metabolism are important for facilitating the increased energetic and biosynthetic demands of activated cells, immune cell metabolism also has direct roles in controlling the functions of immune cells and shaping the immune response. A theme is emerging wherein nutrients, metabolic enzymes, and metabolites can act as an extension of the established immune signal transduction pathways, thereby adding an extra layer of complexity to the regulation of immunity. This Review will outline the metabolic configurations adopted by different immune cell subsets, describe the emerging roles for metabolic enzymes and metabolites in the control of immune cell function, and discuss the therapeutic implications of this emerging immune regulatory axis.
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347
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Mortensen NP, Mercier KA, McRitchie S, Cavallo TB, Pathmasiri W, Stewart D, Sumner SJ. Microfluidics meets metabolomics to reveal the impact of Campylobacter jejuni infection on biochemical pathways. Biomed Microdevices 2016; 18:51. [PMID: 27231016 PMCID: PMC4939818 DOI: 10.1007/s10544-016-0076-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Microfluidic devices that are currently being used in pharmaceutical research also have a significant potential for utilization in investigating exposure to infectious agents. We have established a microfluidic device cultured with Caco-2 cells, and utilized metabolomics to investigate the biochemical responses to the bacterial pathogen Campylobacter jejuni. In the microfluidic devices, Caco-2 cells polarize at day 5, are uniform, have defined brush borders and tight junctions, and form a mucus layer. Metabolomics analysis of cell culture media collected from both Caco-2 cell culture systems demonstrated a more metabolic homogenous biochemical profile in the media collected from microfluidic devices, compared with media collected from transwells. GeneGo pathway mapping indicated that aminoacyl-tRNA biosynthesis was perturbed by fluid flow, suggesting that fluid dynamics and shear stress impacts the cells translational quality control. Both microfluidic device and transwell culturing systems were used to investigate the impact of Campylobacter jejuni infection on biochemical processes. Caco-2 cells cultured in either system were infected at day 5 with C. jejuni 81-176 for 48 h. Metabolomics analysis clearly differentiated C. jejuni 81-176 infected and non-infected medias collected from the microfluidic devices, and demonstrated that C. jejuni 81-176 infection in microfluidic devices impacts branched-chain amino acid metabolism, glycolysis, and gluconeogenesis. In contrast, no distinction was seen in the biochemical profiles of infected versus non-infected media collected from cells cultured in transwells. Microfluidic culturing conditions demonstrated a more metabolically homogenous cell population, and present the opportunity for studying host-pathogen interactions for extended periods of time.
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Affiliation(s)
- Ninell P Mortensen
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA.
| | - Kelly A Mercier
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA
| | - Susan McRitchie
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA
| | - Tammy B Cavallo
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA
| | - Wimal Pathmasiri
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA
| | - Delisha Stewart
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA
| | - Susan J Sumner
- Systems and Translational Sciences Discovery - Science - Technology, RTI International, 3040 Cornwallis Drive, Research Triangle Park, NC, 27709, USA.
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, Systems and Translational Sciences, RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA.
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348
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Impact of Adenovirus infection in host cell metabolism evaluated by (1)H-NMR spectroscopy. J Biotechnol 2016; 231:16-23. [PMID: 27215342 DOI: 10.1016/j.jbiotec.2016.05.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/12/2016] [Accepted: 05/19/2016] [Indexed: 12/22/2022]
Abstract
Adenovirus-based vectors are powerful vehicles for gene transfer applications in vaccination and gene therapy. Although highly exploited in the clinical setting, key aspects of the adenovirus biology are still not well understood, in particular the subversion of host cell metabolism during viral infection and replication. The aim of this work was to gain insights on the metabolism of two human cell lines (HEK293 and an amniocyte-derived cell line, 1G3) after infection with an adenovirus serotype 5 vector (AdV5). In order to profile metabolic alterations, we used (1)H-NMR spectroscopy, which allowed the quantification of 35 metabolites in cell culture supernatants with low sample preparation and in a relatively short time. Significant differences between both cell lines in non-infected cultures were identified, namely in glutamine and acetate metabolism, as well as by-product secretion. The main response to AdV5 infection was an increase in glucose consumption and lactate production rates. Moreover, cultures performed with or without glutamine supplementation confirmed the exhaustion of this amino acid as one of the main causes of lower AdV5 production at high cell densities (10- and 1.5-fold less specific yields in HEK293 and 1G3 cells, respectively), and highlighted different degrees of glutamine dependency of adenovirus replication in each cell line. The observed metabolic alterations associated with AdV5 infection and specificity of the host cell line can be useful for targeted bioprocess optimization.
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349
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González Plaza JJ, Hulak N, Kausova G, Zhumadilov Z, Akilzhanova A. Role of metabolism during viral infections, and crosstalk with the innate immune system. Intractable Rare Dis Res 2016; 5:90-6. [PMID: 27195191 PMCID: PMC4869588 DOI: 10.5582/irdr.2016.01008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Viruses have been for long polemic biological particles which stand in the twilight of being living entities or not. As their genome is reduced, they rely on the metabolic machinery of their host in order to replicate and be able to continue with their infection process. The understanding of their metabolic requirements is thus of paramount importance in order to develop tailored drugs to control their population, without affecting the normal functioning of their host. New advancements in high throughput technologies, especially metabolomics are allowing researchers to uncover the metabolic mechanisms of viral replication. In this short review, we present the latest discoveries that have been made in the field and an overview of the intrinsic relationship between metabolism and innate immunity as an important part of the immune system.
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Affiliation(s)
- Juan José González Plaza
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
- Research Department, University Hospital for Infectious Diseases “Dr. Fran Mihaljević”, Zagreb, Croatia
- Address correspondence to: Dr. Juan José González Plaza, Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička 54, P.O. Box 180, 10002 Zagreb, Croatia. E-mail:
| | - Nataša Hulak
- Department of Microbiology, Faculty of Agriculture, University of Zagreb, Zagreb, Croatia
| | | | - Zhaxybay Zhumadilov
- Laboratory of Genomic and Personalized Medicine, Center for Life Sciences, PI “National Laboratory Astana”, AOE “Nazarbayev University”, Astana, Kazakhstan
| | - Ainur Akilzhanova
- Laboratory of Genomic and Personalized Medicine, Center for Life Sciences, PI “National Laboratory Astana”, AOE “Nazarbayev University”, Astana, Kazakhstan
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350
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Colaço HG, Moita LF. Initiation of innate immune responses by surveillance of homeostasis perturbations. FEBS J 2016; 283:2448-57. [PMID: 27037950 DOI: 10.1111/febs.13730] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/20/2016] [Accepted: 04/01/2016] [Indexed: 01/01/2023]
Abstract
Pathogen recognition, signaling transduction pathways, and effector mechanisms are necessary steps of innate immune responses that play key roles in the early phase of defense and in the stimulation of the later specific response of adaptive immunity. Here, we argue that in addition to the direct recognition of conserved common structural and functional molecular signatures of microorganisms using pattern recognition receptors, hosts can mount an immune response following the sensing of disruption in homeostasis as proximal reporters for infections. Surveillance of disruption of core cellular activities leading to defense responses is a flexible strategy that requires few additional components and that can effectively detect relevant threats. It is likely to be evolutionarily very conserved and ancient because it is operational in organisms that lack pattern recognition triggered immunity. A homeostasis disruption model of immune response initiation and modulation has broad implications for pathophysiology and treatment of disease and might constitute an often overlooked but central component of a comprehensive conceptual framework for innate immunity.
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Affiliation(s)
- Henrique G Colaço
- Innate Immunity and Inflammation Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Luis F Moita
- Innate Immunity and Inflammation Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
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