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Zhang K, Pan X, Zheng J, Liu Y, Sun L. The metabolic analysis in human aortic tissues of aortic dissection. J Clin Lab Anal 2022; 36:e24623. [PMID: 35881684 PMCID: PMC9459286 DOI: 10.1002/jcla.24623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/10/2022] [Accepted: 07/12/2022] [Indexed: 12/04/2022] Open
Abstract
Background The metabolic profile of human aortic tissues is of great importance. Among the analytical platforms utilized in metabolomics, LC‐MS provides broad metabolome coverage. The non‐targeted metabolomics can comprehensively detect the entire metabolome of an organism and find the metabolic characteristics that have significant changes in the experimental group and the control group and elucidate the metabolic pathway concerning the recognized metabolites. Employing non‐targeted metabolomics is helpful to develop biomarkers for disease diagnosis and disease pathology research; for instance, Aortic aneurysm (AA) and Aortic dissection (AD). Aim This study sought to describe the non‐targeted analysis of 18 aortic tissue samples, comparing between AA and AD. Material & Methods Our experimental flow included dividing the samples into (AA, nine samples) and (AD, nine samples), SCIEX quadrupole timeofflight tandem mass spectrometer (TripleTOF) 6600+ mass spectrometer data refinement, MetDNA database analysis, and pathway analysis. We performed an initial validation by setting quality control parameters to evaluate the stability of the analysis system during the computer operation. We then used the repeatability of the control samples to examine the stability of the instrument during the entire analysis process to ensure the reliability of the results. Results Our study found 138 novel metabolites involved in galactose metabolism. Discussion 138 novel metabolites found in this study will be further studied in the future. Conclusion Our study found 138 novel metabolites between AA and AD, which will provide viable clinical data for future studies aimed to implement galactose markers in aortic tissue analysis.
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Affiliation(s)
- Kefeng Zhang
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Aortic Disease Center, Beijing, China
| | - Xudong Pan
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Aortic Disease Center, Beijing, China
| | - Jun Zheng
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Aortic Disease Center, Beijing, China
| | - Yongmin Liu
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Aortic Disease Center, Beijing, China
| | - Lizhong Sun
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Aortic Disease Center, Beijing, China
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Torres RM, Correia D, Nunes MDCP, Dutra WO, Talvani A, Sousa AS, Mendes FDSNS, Scanavacca MI, Pisani C, Moreira MDCV, de Souza DDSM, de Oliveira Junior W, Martins SM, Dias JCP. Prognosis of chronic Chagas heart disease and other pending clinical challenges. Mem Inst Oswaldo Cruz 2022; 117:e210172. [PMID: 35674528 PMCID: PMC9172891 DOI: 10.1590/0074-02760210172] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/17/2021] [Indexed: 01/24/2023] Open
Abstract
In this chapter, the main prognostic markers of Chagas heart disease are addressed, with an emphasis on the most recent findings and questions, establishing the basis for a broad discussion of recommendations and new approaches to managing Chagas cardiopathy. The main biological and genetic markers and the contribution of the electrocardiogram, echocardiogram and cardiac magnetic resonance are presented. We also discuss the most recent therapeutic proposals for heart failure, thromboembolism and arrhythmias, as well as current experience in heart transplantation in patients suffering from severe Chagas cardiomyopathy. The clinical and epidemiological challenges introduced by acute Chagas disease due to oral contamination are discussed. In addition, we highlight the importance of ageing and comorbidities in influencing the outcome of chronic Chagas heart disease. Finally, we discuss the importance of public policies, the vital role of funding agencies, universities, the scientific community and health professionals, and the application of new technologies in finding solutions for better management of Chagas heart disease.
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Choudhuri S, Bhavnani SK, Zhang W, Botelli V, Barrientos N, Iñiguez F, Zago MP, Garg NJ. Prognostic Performance of Peripheral Blood Biomarkers in Identifying Seropositive Individuals at Risk of Developing Clinically Symptomatic Chagas Cardiomyopathy. Microbiol Spectr 2021; 9:e0036421. [PMID: 34479416 PMCID: PMC8552597 DOI: 10.1128/spectrum.00364-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/28/2021] [Indexed: 11/25/2022] Open
Abstract
Biomarkers for prognosis-based detection of Trypanosoma cruzi-infected patients presenting no clinical symptoms to cardiac Chagas disease (CD) are not available. In this study, we examined the performance of seven biomarkers in prognosis and risk of symptomatic CD development. T. cruzi-infected patients clinically asymptomatic (C/A; n = 30) or clinically symptomatic (C/S; n = 30) for cardiac disease and humans who were noninfected and healthy (N/H; n = 24) were enrolled (1 - β = 80%, α = 0.05). Serum, plasma, and peripheral blood mononuclear cells (PBMCs) were analyzed for heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1), vimentin, poly(ADP-ribose) polymerase (PARP1), 8-hydroxy-2-deoxyguanosine (8-OHdG), copeptin, endostatin, and myostatin biomarkers by enzyme-linked immunosorbent assay (ELISA) and Western blotting. Secreted hnRNPA1, vimentin, PARP1, 8-OHdG, copeptin, and endostatin were increased by 1.4- to 7.0-fold in CD subjects versus N/H subjects (P < 0.001) and showed excellent predictive value in identifying the occurrence of infection (area under the receiver operating characteristic [ROC] curve [AUC], 0.935 to 0.999). Of these, vimentin, 8-OHdG, and copeptin exhibited the best performance in prognosis of C/S (versus C/A) CD, determined by binary logistic regression analysis with the Cox and Snell test (R2C&S = 0.492 to 0.688). A decline in myostatin and increase in hnRNPA1 also exhibited good predictive value in identifying C/S and C/A CD status, respectively. Furthermore, circulatory 8-OHdG (Wald χ2 = 15.065), vimentin (Wald χ2 = 14.587), and endostatin (Wald χ2 = 17.902) levels exhibited a strong association with changes in left ventricular ejection fraction and diastolic diameter (P = 0.001) and predicted the risk of cardiomyopathy development in CD patients. We have identified four biomarkers (vimentin, 8-OHdG, copeptin, and endostatin) that offer excellent value in prognosis and risk of symptomatic CD development. Decline in these four biomarkers and increase in hnRNPA1 would be useful in monitoring the efficacy of therapies and vaccines in halting CD. IMPORTANCE There is a lack of validated biomarkers for diagnosis of T. cruzi-infected individuals at risk of developing heart disease. Of the seven potential biomarkers that were screened, vimentin, 8-OHdG, copeptin, and endostatin exhibited excellent performance in distinguishing the clinical severity of Chagas disease. A decline in these four biomarkers can also be used for monitoring the therapeutic responses of infected patients to established or newly developed drugs and vaccines and precisely inform the patients about their progress. These biomarkers can easily be screened using the readily available plasma/serum samples in the clinical setting by an ELISA that is inexpensive, fast, and requires low-tech resources at the facility, equipment, and personnel levels.
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Affiliation(s)
- Subhadip Choudhuri
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Suresh K. Bhavnani
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
- Department Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas, USA
| | - Weibin Zhang
- Department Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas, USA
| | | | | | - Facundo Iñiguez
- Servicio de Cardiología, Hospital San Bernardo, Salta, Argentina
| | - Maria Paola Zago
- Instituto de Patología Experimental, CONICET-Universidad Nacional de Salta (UNSa), Salta, Argentina
| | - Nisha Jain Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, USA
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4
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Jovasevic V, Zhang H, Sananbenesi F, Guedea AL, Soman KV, Wiktorowicz JE, Fischer A, Radulovic J. Primary cilia are required for the persistence of memory and stabilization of perineuronal nets. iScience 2021; 24:102617. [PMID: 34142063 PMCID: PMC8185192 DOI: 10.1016/j.isci.2021.102617] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/02/2021] [Accepted: 05/19/2021] [Indexed: 01/11/2023] Open
Abstract
It is well established that the formation of episodic memories requires multiple hippocampal mechanisms operating on different time scales. Early mechanisms of memory formation (synaptic consolidation) have been extensively characterized. However, delayed mechanisms, which maintain hippocampal activity as memories stabilize in cortical circuits, are not well understood. Here we demonstrate that contrary to the transient expression of early- and delayed-response genes, the expression of cytoskeleton- and extracellular matrix-associated genes remains dynamic even at remote time points. The most profound expression changes clustered around primary cilium-associated and collagen genes. These genes most likely contribute to memory by stabilizing perineuronal nets in the dorsohippocampal CA1 subfield, as revealed by targeted disruptions of the primary cilium or perineuronal nets. The findings show that nonsynaptic, primary cilium-mediated mechanisms are required for the persistence of context memory.
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Affiliation(s)
- Vladimir Jovasevic
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Room 13-100, Montgomery Ward Memorial Building, Chicago, IL 60611, USA
| | - Hui Zhang
- Department of Neuroscience and Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Rose F. Kennedy Center, 1410 Pelham Parkway South, Room 115, Bronx, NY 10461, USA
| | | | - Anita L. Guedea
- Department of Psychiatry and Behavioral Sciences, Northwestern University, Chicago, IL 60611, USA
| | - Kizhake V. Soman
- Division of Infectious Disease, Department of Internal Medicine, UTMB – Galveston, Galveston, TX 77555, USA
| | | | - Andre Fischer
- German Center for Neurodegenerative Diseases, Göttingen 37075, Germany
| | - Jelena Radulovic
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Room 13-100, Montgomery Ward Memorial Building, Chicago, IL 60611, USA
- Department of Neuroscience and Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Rose F. Kennedy Center, 1410 Pelham Parkway South, Room 115, Bronx, NY 10461, USA
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Poveda C, Bottazzi ME, Jones KM. Mining the Metabolome for New and Innovative Chagas Disease Treatments. Trends Pharmacol Sci 2020; 42:1-3. [PMID: 33248705 DOI: 10.1016/j.tips.2020.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 01/16/2023]
Abstract
Identifying novel therapeutic targets for Chagas disease is a scientific priority. Recently, Hossain et al. used an innovative metabolomic approach to define disease tolerance mechanisms and identify therapeutic targets for Chagas disease. This is the first study translating metabolomic data to develop novel treatments for Chagas disease.
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Affiliation(s)
- Cristina Poveda
- Texas Children's Hospital Center for Vaccine Development, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Maria Elena Bottazzi
- Texas Children's Hospital Center for Vaccine Development, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA; Department of Biology, Baylor University, Waco, TX, USA
| | - Kathryn M Jones
- Texas Children's Hospital Center for Vaccine Development, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA; Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA.
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6
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A novel Trypanosoma cruzi secreted antigen as a potential biomarker of Chagas disease. Sci Rep 2020; 10:19591. [PMID: 33177582 PMCID: PMC7658208 DOI: 10.1038/s41598-020-76508-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 10/26/2020] [Indexed: 01/30/2023] Open
Abstract
Chagas drug discovery has been hampered by a lack of validated assays to establish treatment efficacy in pre-clinical animal models and in patients infected with T. cruzi. Reduced levels of parasite secreted antigens in the blood of infected hosts could be used to demonstrate treatment efficacy. A published proteomic study of parasite secreted antigens identified the hypothetical protein Tc_5171 as a secreted antigen. In this report, we developed Tc_5171 specific antibodies and showed that the native protein was expressed by the three life cycle stages of the parasite. Anti-peptide antibodies were able to detect the parasite antigen in blood of infected mice during the acute and the chronic phase of infection. Benznidazole treatment of infected mice significantly reduced their blood antigen levels. Of clinical significance, patients diagnosed with Chagas disease, either asymptomatic or with cardiac clinical symptoms had significantly higher Tc_5171 antigen levels compared to endemic controls. Pair-wise analysis, before and after Benznidazole treatment, of patients with asymptomatic Chagas disease showed a significant reduction in antigen levels post treatment. Taken together, our results indicate that Tc_5171 could be used as a novel biomarker of Chagas disease for diagnosis and to assess treatment efficacy.
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7
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Dib PRB, Quirino-Teixeira AC, Merij LB, Pinheiro MBM, Rozini SV, Andrade FB, Hottz ED. Innate immune receptors in platelets and platelet-leukocyte interactions. J Leukoc Biol 2020; 108:1157-1182. [PMID: 32779243 DOI: 10.1002/jlb.4mr0620-701r] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/11/2020] [Accepted: 06/28/2020] [Indexed: 12/14/2022] Open
Abstract
Platelets are chief cells in hemostasis. Apart from their hemostatic roles, platelets are major inflammatory effector cells that can influence both innate and adaptive immune responses. Activated platelets have thromboinflammatory functions linking hemostatic and immune responses in several physiological and pathological conditions. Among many ways in which platelets exert these functions, platelet expression of pattern recognition receptors (PRRs), including TLR, Nod-like receptor, and C-type lectin receptor families, plays major roles in sensing and responding to pathogen-associated or damage-associated molecular patterns (PAMPs and DAMPs, respectively). In this review, an increasing body of evidence is compiled showing the participation of platelet innate immune receptors, including PRRs, in infectious diseases, sterile inflammation, and cancer. How platelet recognition of endogenous DAMPs participates in sterile inflammatory diseases and thrombosis is discussed. In addition, platelet recognition of both PAMPs and DAMPs initiates platelet-mediated inflammation and vascular thrombosis in infectious diseases, including viral, bacterial, and parasite infections. The study also focuses on the involvement of innate immune receptors in platelet activation during cancer, and their contribution to tumor microenvironment development and metastasis. Finally, how innate immune receptors participate in platelet communication with leukocytes, modulating leukocyte-mediated inflammation and immune functions, is highlighted. These cell communication processes, including platelet-induced release of neutrophil extracellular traps, platelet Ag presentation to T-cells and platelet modulation of monocyte cytokine secretion are discussed in the context of infectious and sterile diseases of major concern in human health, including cardiovascular diseases, dengue, HIV infection, sepsis, and cancer.
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Affiliation(s)
- Paula Ribeiro Braga Dib
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil.,Laboratory of Immunology, Infectious Diseases and Obesity, Department of Parasitology, Microbiology and Immunology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Anna Cecíllia Quirino-Teixeira
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Laura Botelho Merij
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Mariana Brandi Mendonça Pinheiro
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Stephane Vicente Rozini
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Fernanda Brandi Andrade
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Eugenio Damaceno Hottz
- Laboratory of Immunothrombosis, Department of Biochemistry, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
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Wozniak JM, Silva TA, Thomas D, Siqueira-Neto JL, McKerrow JH, Gonzalez DJ, Calvet CM. Molecular dissection of Chagas induced cardiomyopathy reveals central disease associated and druggable signaling pathways. PLoS Negl Trop Dis 2020; 14:e0007980. [PMID: 32433643 PMCID: PMC7279607 DOI: 10.1371/journal.pntd.0007980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 06/08/2020] [Accepted: 03/25/2020] [Indexed: 12/13/2022] Open
Abstract
Chagas disease, the clinical presentation of T. cruzi infection, is a major human health concern. While the acute phase of Chagas disease is typically asymptomatic and self-resolving, chronically infected individuals suffer numerous sequelae later in life. Cardiomyopathies in particular are the most severe consequence of chronic Chagas disease and cannot be reversed solely by parasite load reduction. To prioritize new therapeutic targets, we unbiasedly interrogated the host signaling events in heart tissues isolated from a Chagas disease mouse model using quantitative, multiplexed proteomics. We defined the host response to infection at both the proteome and phospho-proteome levels. The proteome showed an increase in the immune response and a strong repression of several mitochondrial proteins. Complementing the proteome studies, the phospho-proteomic survey found an abundance of phospho-site alterations in plasma membrane and cytoskeletal proteins. Bioinformatic analysis of kinase activity provided substantial evidence for the activation of NDRG2 and JNK/p38 kinases during Chagas disease. A significant activation of DYRK2 and AMPKA2 and the inhibition of casein family kinases were also predicted. We concluded our analyses by linking the diseased heart proteome profile to known therapeutic interventions, uncovering a potential to target mitochondrial proteins, secreted immune effectors and core kinases for the treatment of chronic Chagas disease. Together, this study provides molecular insight into host proteome and phospho-proteome responses to T. cruzi infection in the heart for the first time, highlighting pathways that can be further validated for functional contributions to disease and suitability as drug targets.
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Affiliation(s)
- Jacob M. Wozniak
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
- Department of Pharmacology; University of California San Diego; La Jolla, CA, United States of America
| | - Tatiana Araújo Silva
- Cellular Ultrastructure Laboratory; Oswaldo Cruz Institute, FIOCRUZ; Rio de Janeiro, RJ, Brazil
| | - Diane Thomas
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
| | - Jair L. Siqueira-Neto
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
| | - James H. McKerrow
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
| | - David J. Gonzalez
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
- Department of Pharmacology; University of California San Diego; La Jolla, CA, United States of America
- * E-mail: (DJG); (CMC)
| | - Claudia M. Calvet
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla, CA, United States of America
- Cellular Ultrastructure Laboratory; Oswaldo Cruz Institute, FIOCRUZ; Rio de Janeiro, RJ, Brazil
- * E-mail: (DJG); (CMC)
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Integrated Functional Analysis of the Nuclear Proteome of Classically and Alternatively Activated Macrophages. Mediators Inflamm 2019; 2019:3481430. [PMID: 31182931 PMCID: PMC6515079 DOI: 10.1155/2019/3481430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/31/2018] [Accepted: 03/06/2019] [Indexed: 02/03/2023] Open
Abstract
Macrophages (Mφ) play a central role in coordinating host response to pathogens, cellular injury, and environmental stimuli. Herein, we report multidimensional, nuclear proteomic analyses of protein expression and posttranslational modifications (PTMs) that control biological processes during Mφ activation. For this, Mφ were incubated with IFN-γ/LPS and IL-4, and their differentiation to proinflammatory (M1) and anti-inflammatory (M2a, referred as M2 for simplicity throughtout the manuscript) phenotypes was confirmed by detection of CD64 and CD206 surface markers and TNF-α, arginase I, and iNOS-dependent nitrite levels. We used a sequential method of organellar enrichment and labeling of nuclear fractions with BODIPY FL-maleimide fluorescence dye followed by two-dimensional electrophoresis (2DE) to capture quantitative changes in abundance and S-nitrosylated (SNO) proteome signatures. Exact same gels were then labeled with Pro-Q Diamond to detect protein phosphorylation. MALDI-TOF/TOF MS analysis of the protein spots with fold change of ≥|1.5| in any of the groups yielded 229 identifications. We found that 145, 78, and 173 protein spots in M1 Mφ and 105, 81, and 164 protein spots in M2 Mφ were changed in abundance, S-nitrosylation, and phosphorylation, respectively, with respect to M0 controls (fold change: ≥|1.5|, p ≤ 0.05). Targeted analysis by immunoprecipitation and Western blotting was performed to verify the differential abundance and phosphorylation levels of two of the proteins in M1 and M2 (vs. M0) Mφ. Ingenuity Pathway Analysis of the nuclear proteome datasets showed that the abundance and posttranslational (SNO and Phosphor) modifications of the proteins predicted to be involved in cytoskeletal organization/cell movement, phagocytosis/endocytosis, and cell proliferation/cell death were differentially regulated with proinflammatory and anti-inflammatory activation of Mφ.
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Subverting bradykinin-evoked inflammation by co-opting the contact system: lessons from survival strategies of Trypanosoma cruzi. Curr Opin Hematol 2019; 25:347-357. [PMID: 30028741 DOI: 10.1097/moh.0000000000000444] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE OF REVIEW During Chagas disease, Trypanosoma cruzi alternates between intracellular and extracellular developmental forms. After presenting an overview about the roles of the contact system in immunity, I will review experimental studies showing that activation of the kallikrein-kinin system (KKS) translates into mutual benefits to the host/parasite relationship. RECENT FINDINGS T. cruzi trypomastigotes initiate inflammation by activating tissue-resident innate sentinel cells via the TLR2/CXCR2 pathway. Following neutrophil-evoked microvascular leakage, the parasite's major cysteine protease (cruzipain) cleaves plasma-borne kininogens and complement C5. Tightly regulated by angiotensin-converting enzyme (ACE), kinins and C5a in turn further propagate inflammation via iterative cycles of mast cell degranulation, contact system activation, bradykinin release and activation of endothelial bradykinin B2 receptors (B2R). Recently, studies in the intracardiac model of infection revealed a dichotomic role for bradykinin and endothelin-1: generated upon contact activation (mast cell/KKS pathway), these pro-oedematogenic peptides reciprocally stimulate trypomastigote invasion of heart cells that naturally overexpress B2R and endothelin receptors (ETaR/ETbR). SUMMARY Studies focusing on the immunopathogenesis of Chagas disease revealed that the contact system plays a dual role in host/parasite balance: T. cruzi co-opts bradykinin-induced plasma leakage as a strategy to increment heart parasitism and increase immune resistance by upregulating type-1 effector T-cell production in secondary lymphoid tissues.
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Zago MP, Wiktorowicz JE, Spratt H, Koo SJ, Barrientos N, Nuñez Burgos A, Nuñez Burgos J, Iñiguez F, Botelli V, Leon de la Fuente R, Garg NJ. Potential Utility of Protein Targets of Cysteine-S-Nitrosylation in Identifying Clinical Disease Status in Human Chagas Disease. Front Microbiol 2019; 9:3320. [PMID: 30697201 PMCID: PMC6340995 DOI: 10.3389/fmicb.2018.03320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/20/2018] [Indexed: 01/24/2023] Open
Abstract
Trypanosoma cruzi (Tc) infection causes Chagas disease (ChD) presented by dilated cardiomyopathy and heart failure. During infection, oxidative and nitrosative stresses are elicited by the immune cells for control the pathogen; however, excess nitric oxide and superoxide production can result in cysteine S-nitrosylation (SNO) of host proteins that affects cellular homeostasis and may contribute to disease development. To identify the proteins with changes in SNO modification levels as a hallmark of ChD, we obtained peripheral blood mononuclear cells (PBMC) from seronegative, normal healthy (NH, n = 30) subjects, and from seropositive clinically asymptomatic (ChD CA, n = 25) or clinically symptomatic (ChD CS, n = 28) ChD patients. All samples were treated (Asc+) or not-treated (Asc−) with ascorbate (reduces nitrosylated thiols), labeled with the thiol-labeling BODIPY FL-maleimide dye, resolved by two-dimensional electrophoresis (total 166 gels), and the protein spots that yielded significant differences in abundance or SNO level at p-value of ≤ 0.05t−test/Welch/BH were identified by MALDI-TOF/TOF MS or OrbiTrap LC-MS/MS. Targeted analysis of a new cohort of PBMC samples (n = 10–14/group) was conducted to verify the differential abundance/SNO levels of two of the proteins in ChD (vs. NH) subjects. The multivariate adaptive regression splines (MARS) modeling, comparing differences in relative SNO level (Asc−/Asc+ ratio) of the protein spots between any two groups yielded SNO biomarkers that exhibited ≥90% prediction success in classifying ChD CA (582-KRT1 and 884-TPM3) and ChD CS (426-PNP, 582-KRT1, 486-ALB, 662-ACTB) patients from NH controls. Ingenuity Pathway Analysis (IPA) of the SNO proteome dataset normalized to changes in protein abundance suggested the proteins belonging to the signaling networks of cell death and the recruitment and migration of immune cells were most affected in ChD CA and ChD CS (vs. NH) subjects. We propose that SNO modification of the select panel of proteins identified in this study have the potential to identify ChD severity in seropositive individuals exposed to Tc infection.
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Affiliation(s)
- Maria Paola Zago
- Instituto de Patología Experimental, CONICET-UNSa, Salta, Argentina
| | - John E Wiktorowicz
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Institute for Human Infections and Immunity, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | - Heidi Spratt
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | - Sue-Jie Koo
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX, United States
| | | | - Aida Nuñez Burgos
- Servicio de Cardiología, Programa de Medicina Interna, Hospital Papa Francisco, Salta, Argentina
| | - Julio Nuñez Burgos
- Servicio de Cardiología, Programa de Medicina Interna, Hospital Papa Francisco, Salta, Argentina
| | - Facundo Iñiguez
- Servicio de Cardiología, Hospital San Bernardo, Salta, Argentina
| | | | | | - Nisha Jain Garg
- Institute for Human Infections and Immunity, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX, United States.,Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, TX, United States
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Cruz JS, Machado FS, Ropert C, Roman-Campos D. Molecular mechanisms of cardiac electromechanical remodeling during Chagas disease: Role of TNF and TGF-β. Trends Cardiovasc Med 2017; 27:81-91. [DOI: 10.1016/j.tcm.2016.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/29/2016] [Accepted: 08/05/2016] [Indexed: 12/21/2022]
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13
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Chowdhury IH, Koo SJ, Gupta S, Liang LY, Bahar B, Silla L, Nuñez-Burgos J, Barrientos N, Zago MP, Garg NJ. Gene Expression Profiling and Functional Characterization of Macrophages in Response to Circulatory Microparticles Produced during Trypanosoma cruzi Infection and Chagas Disease. J Innate Immun 2016; 9:203-216. [PMID: 27902980 DOI: 10.1159/000451055] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 09/27/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Chronic inflammation and oxidative stress are hallmarks of chagasic cardiomyopathy (CCM). In this study, we determined if microparticles (MPs) generated during Trypanosoma cruzi (Tc) infection carry the host's signature of the inflammatory/oxidative state and provide information regarding the progression of clinical disease. METHODS MPs were harvested from supernatants of human peripheral blood mononuclear cells in vitro incubated with Tc (control: LPS treated), plasma of seropositive humans with a clinically asymptomatic (CA) or symptomatic (CS) disease state (vs. normal/healthy [NH] controls), and plasma of mice immunized with a protective vaccine before challenge infection (control: unvaccinated/infected). Macrophages (mφs) were incubated with MPs, and we probed the gene expression profile using the inflammatory signaling cascade and cytokine/chemokine arrays, phenotypic markers of mφ activation by flow cytometry, cytokine profile by means of an ELISA and Bioplex assay, and oxidative/nitrosative stress and mitotoxicity by means of colorimetric and fluorometric assays. RESULTS Tc- and LPS-induced MPs stimulated proliferation, inflammatory gene expression profile, and nitric oxide (∙NO) release in human THP-1 mφs. LPS-MPs were more immunostimulatory than Tc-MPs. Endothelial cells, T lymphocytes, and mφs were the major source of MPs shed in the plasma of chagasic humans and experimentally infected mice. The CS and CA (vs. NH) MPs elicited >2-fold increase in NO and mitochondrial oxidative stress in THP-1 mφs; however, CS (vs. CA) MPs elicited a more pronounced and disease-state-specific inflammatory gene expression profile (IKBKB, NR3C1, and TIRAP vs. CCR4, EGR2, and CCL3), cytokine release (IL-2 + IFN-γ > GCSF), and surface markers of mφ activation (CD14 and CD16). The circulatory MPs of nonvaccinated/infected mice induced 7.5-fold and 40% increases in ∙NO and IFN-γ production, respectively, while these responses were abolished when RAW264.7 mφs were incubated with circulatory MPs of vaccinated/infected mice. CONCLUSION Circulating MPs reflect in vivo levels of an oxidative, nitrosative, and inflammatory state, and have potential utility in evaluating disease severity and the efficacy of vaccines and drug therapies against CCM.
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Affiliation(s)
- Imran H Chowdhury
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, TX, USA
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Filtjens J, Coltel N, Cencig S, Taveirne S, Van Ammel E, Van Acker A, Kerre T, Matthys P, Taghon T, Vandekerckhove B, Carlier Y, Truyens C, Leclercq G. The Ly49E Receptor Inhibits the Immune Control of Acute Trypanosoma cruzi Infection. Front Immunol 2016; 7:472. [PMID: 27891126 PMCID: PMC5103623 DOI: 10.3389/fimmu.2016.00472] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 10/19/2016] [Indexed: 11/16/2022] Open
Abstract
The protozoan parasite Trypanosoma cruzi circulates in the blood upon infection and invades various cells. Parasites intensively multiply during the acute phase of infection and persist lifelong at low levels in tissues and blood during the chronic phase. Natural killer (NK) and NKT cells play an important role in the immune control of T. cruzi infection, mainly by releasing the cytokine IFN-γ that activates the microbicidal action of macrophages and other cells and shapes a protective type 1 immune response. The mechanisms by which immune cells are regulated to produce IFN-γ during T. cruzi infection are still incompletely understood. Here, we show that urokinase plasminogen activator (uPA) is induced early upon T. cruzi infection and remains elevated until day 20 post-infection. We previously demonstrated that the inhibitory receptor Ly49E, which is expressed, among others, on NK and NKT cells, is triggered by uPA. Therefore, we compared wild type (WT) to Ly49E knockout (KO) mice for their control of experimental T. cruzi infection. Our results show that young, i.e., 4- and 6-week-old, Ly49E KO mice control the infection better than WT mice, indicated by a lower parasite load and less cachexia. The beneficial effect of Ly49E depletion is more obvious in 4-week-old male than in female mice and weakens in 8-week-old mice. In young mice, the lower T. cruzi parasitemia in Ly49E KO mice is paralleled by higher IFN-γ production compared to their WT controls. Our data indicate that Ly49E receptor expression inhibits the immune control of T. cruzi infection. This is the first demonstration that the inhibitory Ly49E receptor can interfere with the immune response to a pathogen in vivo.
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Affiliation(s)
- Jessica Filtjens
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | - Nicolas Coltel
- Laboratory of Parasitology, Faculty of Medicine, Université Libre de Bruxelles , Brussels , Belgium
| | - Sabrina Cencig
- Laboratory of Parasitology, Faculty of Medicine, Université Libre de Bruxelles , Brussels , Belgium
| | - Sylvie Taveirne
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | - Els Van Ammel
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | - Aline Van Acker
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | - Tessa Kerre
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven , Leuven , Belgium
| | - Tom Taghon
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
| | | | - Yves Carlier
- Laboratory of Parasitology, Faculty of Medicine, Université Libre de Bruxelles , Brussels , Belgium
| | - Carine Truyens
- Laboratory of Parasitology, Faculty of Medicine, Université Libre de Bruxelles , Brussels , Belgium
| | - Georges Leclercq
- Laboratory of Experimental Immunology, Ghent University , Ghent , Belgium
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15
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Koo SJ, Spratt HM, Soman KV, Stafford S, Gupta S, Petersen JR, Zago MP, Kuyumcu-Martinez MN, Brasier AR, Wiktorowicz JE, Garg NJ. S-Nitrosylation Proteome Profile of Peripheral Blood Mononuclear Cells in Human Heart Failure. INTERNATIONAL JOURNAL OF PROTEOMICS 2016; 2016:1384523. [PMID: 27635260 PMCID: PMC5007369 DOI: 10.1155/2016/1384523] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/07/2016] [Accepted: 05/16/2016] [Indexed: 01/05/2023]
Abstract
Nitric oxide (NO) protects the heart against ischemic injury; however, NO- and superoxide-dependent S-nitrosylation (S-NO) of cysteines can affect function of target proteins and play a role in disease outcome. We employed 2D-GE with thiol-labeling FL-maleimide dye and MALDI-TOF MS/MS to capture the quantitative changes in abundance and S-NO proteome of HF patients (versus healthy controls, n = 30/group). We identified 93 differentially abundant (59-increased/34-decreased) and 111 S-NO-modified (63-increased/48-decreased) protein spots, respectively, in HF subjects (versus controls, fold-change | ≥1.5|, p ≤ 0.05). Ingenuity pathway analysis of proteome datasets suggested that the pathways involved in phagocytes' migration, free radical production, and cell death were activated and fatty acid metabolism was decreased in HF subjects. Multivariate adaptive regression splines modeling of datasets identified a panel of proteins that will provide >90% prediction success in classifying HF subjects. Proteomic profiling identified ATP-synthase, thrombospondin-1 (THBS1), and vinculin (VCL) as top differentially abundant and S-NO-modified proteins, and these proteins were verified by Western blotting and ELISA in different set of HF subjects. We conclude that differential abundance and S-NO modification of proteins serve as a mechanism in regulating cell viability and free radical production, and THBS1 and VCL evaluation will potentially be useful in the prediction of heart failure.
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Affiliation(s)
- Sue-jie Koo
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
| | - Heidi M. Spratt
- Department Preventive Medicine and Community Health, UTMB, Galveston, TX 77555, USA
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
| | - Kizhake V. Soman
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Susan Stafford
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Shivali Gupta
- Department of Microbiology and Immunology, UTMB, Galveston, TX 77555, USA
| | - John R. Petersen
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
| | - Maria P. Zago
- Instituto de Patología Experimental, CONICET-UNSa, 4400 Salta, Argentina
| | - Muge N. Kuyumcu-Martinez
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
| | - Allan R. Brasier
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
- Department of Internal Medicine-Endocrinology, UTMB, Galveston, TX 77555, USA
| | - John E. Wiktorowicz
- Institute for Translational Sciences, UTMB, Galveston, TX 77555, USA
- Department of Biochemistry and Molecular Biology, Sealy Center of Molecular Medicine, UTMB, Galveston TX 77555, USA
- Institute for Human Infections and Immunity, UTMB, Galveston, TX 77555, USA
| | - Nisha Jain Garg
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA
- Department of Microbiology and Immunology, UTMB, Galveston, TX 77555, USA
- Institute for Human Infections and Immunity, UTMB, Galveston, TX 77555, USA
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16
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Mensah GA, Burns KM, Peprah EK, Sampson UKA, Engelgau MM. Opportunities and challenges in chronic Chagas cardiomyopathy. Glob Heart 2016; 10:203-7. [PMID: 26407517 DOI: 10.1016/j.gheart.2015.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- George A Mensah
- Center for Translation Research and Implementation Science, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Kristin M Burns
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Emmanuel K Peprah
- Center for Translation Research and Implementation Science, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Uchechukwu K A Sampson
- Center for Translation Research and Implementation Science, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Michael M Engelgau
- Center for Translation Research and Implementation Science, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
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17
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Ohyama K, Huy NT, Yoshimi H, Kishikawa N, Nishizawa JE, Roca Y, Revollo Guzmán RJ, Velarde FUG, Kuroda N, Hirayama K. Proteomic profile of circulating immune complexes in chronic Chagas disease. Parasite Immunol 2016; 38:609-17. [PMID: 27223052 DOI: 10.1111/pim.12341] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/22/2016] [Indexed: 12/21/2022]
Abstract
Immune complexes (ICs) are the direct and real-time products of humoral immune responses. The identification of constituent foreign or autoantigens within ICs might bring new insights into the pathology of infectious diseases. We applied immune complexome analysis of plasma to the study of Chagas disease caused by Trypanosoma cruzi. Twenty seropositive plasma samples including cardiac and/or megacolon determinate patients (n = 11) and indeterminate (n = 9) were analysed along with 10 seronegative individuals to characterize the antigens bound to circulating ICs. We identified 39 T. cruzi antigens and 114 human autoantigens specific to patients with Chagas. Among those antigens, two T. cruzi antigens (surface protease GP63, glucose-6-isomerase) and six human autoantigens (CD180 antigen, ceruloplasmin, fibrinogen beta chain, fibrinogen beta chain isoform 2 preprotein, isoform gamma-A of fibrinogen γ-chain, serum paraoxonase) were detected in more than 50% of the patients tested. Human isoform short of complement factor H-related protein 2 and trans-sialidase of T. cruzi were more frequently found in the indeterminate (5/9 for both) compared with in the determinate Chagas (0/11, P = 0·046 for human, 1/11, P = 0·0498 for T. cruzi). The immune complexome could illustrate the difference of immune status between clinical forms of chronic Chagas disease.
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Affiliation(s)
- K Ohyama
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.,Nagasaki University Research Centre for Genomic Instability and Carcinogenesis (NRGIC), Nagasaki, Japan
| | - N T Huy
- Department of Clinical Product Development, Institute of Tropical Medicine (NEKKEN), and Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - H Yoshimi
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - N Kishikawa
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | | | - Y Roca
- Centro Nacional de Enfermedades Tropicales (CENETROP), Santa Cruz, Bolivia
| | - R J Revollo Guzmán
- Centro Nacional de Enfermedades Tropicales (CENETROP), Santa Cruz, Bolivia
| | | | - N Kuroda
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
| | - K Hirayama
- Department of Immunogenetics, Institute of Tropical Medicine (NEKKEN), and Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
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18
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TcI Isolates of Trypanosoma cruzi Exploit the Antioxidant Network for Enhanced Intracellular Survival in Macrophages and Virulence in Mice. Infect Immun 2016; 84:1842-1856. [PMID: 27068090 DOI: 10.1128/iai.00193-16] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/03/2016] [Indexed: 02/05/2023] Open
Abstract
Trypanosoma cruzi species is categorized into six discrete typing units (TcI to TcVI) of which TcI is most abundantly noted in the sylvatic transmission cycle and considered the major cause of human disease. In our study, the TcI strains Colombiana (COL), SylvioX10/4 (SYL), and a cultured clone (TCC) exhibited different biological behavior in a murine model, ranging from high parasitemia and symptomatic cardiomyopathy (SYL), mild parasitemia and high tissue tropism (COL), to no pathogenicity (TCC). Proteomic profiling of the insect (epimastigote) and infective (trypomastigote) forms by two-dimensional gel electrophoresis/matrix-assisted laser desorption ionization-time of flight mass spectrometry, followed by functional annotation of the differential proteome data sets (≥2-fold change, P < 0.05), showed that several proteins involved in (i) cytoskeletal assembly and remodeling, essential for flagellar wave frequency and amplitude and forward motility of the parasite, and (ii) the parasite-specific antioxidant network were enhanced in COL and SYL (versus TCC) trypomastigotes. Western blotting confirmed the enhanced protein levels of cytosolic and mitochondrial tryparedoxin peroxidases and their substrate (tryparedoxin) and iron superoxide dismutase in COL and SYL (versus TCC) trypomastigotes. Further, COL and SYL (but not TCC) were resistant to exogenous treatment with stable oxidants (H2O2 and peroxynitrite [ONOO(-)]) and dampened the intracellular superoxide and nitric oxide response in macrophages, and thus these isolates escaped from macrophages. Our findings suggest that protein expression conducive to increase in motility and control of macrophage-derived free radicals provides survival and persistence benefits to TcI isolates of T. cruzi.
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19
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Garg NJ, Soman KV, Zago MP, Koo SJ, Spratt H, Stafford S, Blell ZN, Gupta S, Nuñez Burgos J, Barrientos N, Brasier AR, Wiktorowicz JE. Changes in Proteome Profile of Peripheral Blood Mononuclear Cells in Chronic Chagas Disease. PLoS Negl Trop Dis 2016; 10:e0004490. [PMID: 26919708 PMCID: PMC4769231 DOI: 10.1371/journal.pntd.0004490] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 02/03/2016] [Indexed: 12/15/2022] Open
Abstract
Trypanosoma cruzi (Tc) infection causes chagasic cardiomyopathy; however, why 30-40% of the patients develop clinical disease is not known. To discover the pathomechanisms in disease progression, we obtained the proteome signature of peripheral blood mononuclear cells (PBMCs) of normal healthy controls (N/H, n = 30) and subjects that were seropositive for Tc-specific antibodies, but were clinically asymptomatic (C/A, n = 25) or clinically symptomatic (C/S, n = 28) with cardiac involvement and left ventricular dysfunction. Protein samples were labeled with BODIPY FL-maleimide (dynamic range: > 4 orders of magnitude, detection limit: 5 f-mol) and resolved by two-dimensional gel electrophoresis (2D-GE). After normalizing the gel images, protein spots that exhibited differential abundance in any of the two groups were analyzed by mass spectrometry, and searched against UniProt human database for protein identification. We found 213 and 199 protein spots (fold change: |≥ 1.5|, p< 0.05) were differentially abundant in C/A and C/S individuals, respectively, with respect to N/H controls. Ingenuity Pathway Analysis (IPA) of PBMCs proteome dataset identified an increase in disorganization of cytoskeletal assembly and recruitment/activation and migration of immune cells in all chagasic subjects, though the invasion capacity of cells was decreased in C/S individuals. IPA predicted with high probability a decline in cell survival and free radical scavenging capacity in C/S (but not C/A) subjects. The MYC/SP1 transcription factors that regulate hypoxia and oxidative/inflammatory stress were predicted to be key targets in the context of control of Chagas disease severity. Further, MARS-modeling identified a panel of proteins that had >93% prediction success in classifying infected individuals with no disease and those with cardiac involvement and LV dysfunction. In conclusion, we have identified molecular pathways and a panel of proteins that could aid in detecting seropositive individuals at risk of developing cardiomyopathy.
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Affiliation(s)
- Nisha Jain Garg
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
- Department of Pathology, UTMB, Galveston, Texas, United States of America
- Faculty of the Institute for Human Infections and Immunity, and Sealy Center for Vaccine Development, UTMB, Galveston, Texas, United States of America
| | - Kizhake V. Soman
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
| | - Maria P. Zago
- Instituto de Patología Experimental, CONICET-UNSa, Salta, Argentina
| | - Sue-Jie Koo
- Department of Pathology, UTMB, Galveston, Texas, United States of America
| | - Heidi Spratt
- Department of Preventive Medicine and Community Health, UTMB, Galveston, Texas, United States of America
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
| | - Susan Stafford
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
| | - Zinzi N. Blell
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Shivali Gupta
- Department of Microbiology and Immunology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | | | | | - Allan R. Brasier
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
- Department of Internal Medicine, UTMB, Galveston, Texas, United States of America
| | - John E. Wiktorowicz
- Department of Biochemistry and Molecular Biology, and the Sealy Center for Molecular Medicine, UTMB, Galveston, Texas, United States of America
- Institute for Translational Sciences, UTMB, Galveston, Texas, United States of America
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20
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Implying Analytic Measures for Unravelling Rheumatoid Arthritis Significant Proteins Through Drug–Target Interaction. Interdiscip Sci 2015; 8:122-131. [DOI: 10.1007/s12539-015-0108-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/28/2014] [Accepted: 01/03/2015] [Indexed: 12/22/2022]
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21
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Thomé JG, Mendoza MR, Cheuiche AV, La Porta VL, Silvello D, Dos Santos KG, Andrades ME, Clausell N, Rohde LE, Biolo A. Circulating microRNAs in obese and lean heart failure patients: A case-control study with computational target prediction analysis. Gene 2015. [PMID: 26211628 DOI: 10.1016/j.gene.2015.07.068] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
AIMS MicroRNAs (miRs) regulate processes involved in both cardiac remodeling and obesity. We investigated if the expression of selected miRs in patients with heart failure (HF) is influenced by the presence of obesity. METHODS In this case-control study, we compared plasma levels of miR-21, -130b, -221, -423-5p, and the -221/-130b ratio in 57 age- and gender-matched subjects: 40 HF patients (20 obese HF and 20 lean HF) and 17 lean healthy controls. Body composition was estimated by bioelectrical impedance analysis. MiRs were measured by quantitative reverse transcription-PCR. Bioinformatics analysis was performed based on miRs findings to predict their putative targets and investigate their biological function. RESULTS HF was associated with increased miR-423-5p levels in both lean and obese patients (P<0.05 vs. controls) without differences between HF groups. MiR-130b levels were reduced in obese HF patients compared with HF lean (P=0.036) and controls (P=0.025). MiR-221 levels were non-significantly increased in obese HF patients. MiR-21 levels were not different among the groups. MiR-221/-130b ratio was increased in obese HF patients, and was positively associated with body fat percentage (r=0.43; P=0.002), body mass index (r=0.44; P=0.002), and waist circumference (r=0.40; P=0.020). Computational prediction of target genes followed by functional enrichment analysis indicated a relevant role of miR-130b and miR-221 in modulating the expression of genes associated to cardiovascular and endocrine diseases, and suggested their influence in important signaling mechanisms and in numerous processes related to the circulatory and endocrine systems. CONCLUSIONS In HF patients, the presence of obesity is associated with a differential expression of selected miRs and the miR-221/-130b ratio had significant correlations with adiposity parameters. Computational target prediction analysis identified several interrelated pathways targeted by miR-130b and miR-221 with a known relationship with endocrine and cardiovascular diseases, representing potential mechanisms to be further validated.
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Affiliation(s)
- Juliana Gil Thomé
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mariana Recamonde Mendoza
- Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Amanda Veiga Cheuiche
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Vanessa Laubert La Porta
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Daiane Silvello
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Kátia Gonçalves Dos Santos
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Laboratory of Human Molecular Genetics, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Michael Everton Andrades
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Nadine Clausell
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Luis Eduardo Rohde
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Andréia Biolo
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
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Singh S, Vennila JJ, Snijesh VP, George G, Sunny C. Implying analytic measures for unraveling rheumatoid arthritis significant proteins through drug target interaction. Interdiscip Sci 2015. [PMID: 25663118 DOI: 10.1007/s12539-014-0245-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/28/2014] [Accepted: 01/03/2015] [Indexed: 11/25/2022]
Abstract
Rheumatoid arthritis (RA) is a systemic auto-immune and inflammatory disease that mainly alters the synovial joints and ultimately leads to their destruction. The involvement of the immune system and its related cells is a basic trademark of auto-immune associated diseases. The present work focuses on network analysis and its functional characterization to predict novel targets for RA. The interactive model called as Rheumatoid Arthritis Drug-Target-Protein (RA-DTP) is built of 1727 nodes and 7954 edges followed the power law distribution. RADTP comprised of 20 islands, 55 modules and 123 sub modules. Good interactome coverage of target-protein was detected in Island 2 (Q-Score 0.875) which includes 673 molecules with 20 modules and 68 sub modules. The biological landscape of these modules was examined based on the participation molecules in specific cellular localization, molecular function and biological pathway with favourable p value. Functional characterization and pathway analysis through KEGG, Biocarta and Reactome also showed their involvement in relation to the immune system and inflammatory processes and biological processes such as cell signalling and communication, glucosamine metabolic process, Renin Angiotensin system, BCR signals, Galactose metabolism, MAPK signalling, Complement and Coagulation system and NGF signalling pathways. Traffic values and centrality parameters were applied as the selection criteria for identifying potential targets from the important hubs which resulted into FOS, KNG1, PTGDS, HSP90AA1, REN, POMC, FCER1G, IL6, ICAM1, SGK1, NOS3 and PLA2G4A. This approach provides an insight to experimental validation of these associations of potential targets for clinical value to find their effect on animal studies.
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Affiliation(s)
- Sachidanand Singh
- Department of Bioinformatics, School of Biotechnology and Health Sciences, Karunya University, Coimbatore, India,
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Rodríguez-Angulo HO, Toro-Mendoza J, Marques JA, Concepción JL, Bonfante-Cabarcas R, Higuerey Y, Thomas LE, Balzano-Nogueira L, López JR, Mijares A. Evidence of reversible bradycardia and arrhythmias caused by immunogenic proteins secreted by T. cruzi in isolated rat hearts. PLoS Negl Trop Dis 2015; 9:e0003512. [PMID: 25647069 PMCID: PMC4315581 DOI: 10.1371/journal.pntd.0003512] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 01/02/2015] [Indexed: 12/03/2022] Open
Abstract
Rationale Chagas cardiomyopathy, caused by the protozoan Trypanosoma cruzi, is characterized by alterations in intracellular ion, heart failure and arrhythmias. Arrhythmias have been related to sudden death, even in asymptomatic patients, and their molecular mechanisms have not been fully elucidated. Objective The aim of this study is to demonstrate the effect of proteins secreted by T. cruzi on healthy, isolated beating rat heart model under a non-damage-inducing protocol. Methods and Results We established a non-damage-inducing recirculation-reoxygenation model where ultrafiltrate fractions of conditioned medium control or conditioned infected medium were perfused at a standard flow rate and under partial oxygenation. Western blotting with chagasic patient serum was performed to determine the antigenicity of the conditioned infected medium fractions. We observed bradycardia, ventricular fibrillation and complete atrioventricular block in hearts during perfusion with >50 kDa conditioned infected culture medium. The preincubation of conditioned infected medium with chagasic serum abolished the bradycardia and arrhythmias. The proteins present in the conditioned infected culture medium of >50 kDa fractions were recognized by the chagasic patient sera associated with arrhythmias. Conclusions These results suggest that proteins secreted by T. cruzi are involved in Chagas disease arrhythmias and may be a potential biomarker in chagasic patients. Chagas disease, caused by the parasite Trypanosoma cruzi, is an endemic disease of Latin-American countries, affecting an estimated 8 million people in 21 countries. It is spread by the bite of triatomine reduvid bug. Due to immigration towards non-endemic regions, the disease can spread and affect people around the world via blood transfusions. Infection usually occurs in childhood, and some patients may develop acute myocarditis; however, most remain asymptomatic for many years before chronic cardiac and/or gastrointestinal manifestations appear. Chagas disease is characterized by an acute phase, which is generally asymptomatic, or oligosymptomatic, an indeterminate phase, which may persist for several years, and a chronic phase in which dilated cardiomyopathy and arrhythmias are primarily observed and sudden death may occur. Once heart failure develops, death usually occurs within several years. In this work, we demonstrate the pathophysiological role of proteins secreted by T. cruzi on cardiac arrhythmias. The antigenicity of these fractions was tested by an immunological test using chagasic patients’ sera associated with arrhythmias. We showed that perfusion of the proteins secreted by T. cruzi, in an isolated beating rat heart model, induced cardiac arrhythmias such as bradycardia and complete atrioventricular block.
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Affiliation(s)
- Héctor O. Rodríguez-Angulo
- Laboratorio de Fisiología de Parásitos, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Jhoan Toro-Mendoza
- Centro de Estudios Interdisciplinarios de la Física. Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Juan A. Marques
- Servicio de Cardiología, Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Juan L. Concepción
- Laboratorio de Enzimología de Parásitos, Departamento de Biología, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela
| | - Rafael Bonfante-Cabarcas
- Unidad de Investigaciones en Bioquímica, Decanato de Ciencias de la Salud, Universidad Centroccidental “Lisandro Alvarado”, Barquisimeto, Venezuela
| | - Yoliver Higuerey
- Servicio de Cultivos de Células y Tejidos, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Luz E. Thomas
- Laboratorio de Fisiología Molecular Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - Leandro Balzano-Nogueira
- Unidad de Agronomía y Soberanía Agroalimentaria, Instituto de Estudios Avanzados (IDEA), Caracas, Venezuela
| | - José R. López
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
| | - Alfredo Mijares
- Laboratorio de Fisiología de Parásitos, Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
- * E-mail: ,
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Okamoto EE, Sherbuk JE, Clark EH, Marks MA, Gandarilla O, Galdos-Cardenas G, Vasquez-Villar A, Choi J, Crawford TC, Do RQ, Q R, Fernandez AB, Colanzi R, Flores-Franco JL, Gilman RH, Bern C. Biomarkers in Trypanosoma cruzi-infected and uninfected individuals with varying severity of cardiomyopathy in Santa Cruz, Bolivia. PLoS Negl Trop Dis 2014; 8:e3227. [PMID: 25275382 PMCID: PMC4183477 DOI: 10.1371/journal.pntd.0003227] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/28/2014] [Indexed: 11/25/2022] Open
Abstract
Background Twenty to thirty percent of persons with Trypanosoma cruzi infection eventually develop cardiomyopathy. If an early indicator were to be identified and validated in longitudinal studies, this could enable treatment to be prioritized for those at highest risk. We evaluated cardiac and extracellular matrix remodeling markers across cardiac stages in T. cruzi infected (Tc+) and uninfected (Tc−) individuals. Methods Participants were recruited in a public hospital in Santa Cruz, Bolivia and assigned cardiac severity stages by electrocardiogram and echocardiogram. BNP, NTproBNP, CKMB, troponin I, MMP-2, MMP-9, TIMP-1, TIMP-2, TGFb1, and TGFb2 were measured in specimens from 265 individuals using multiplex bead systems. Biomarker levels were compared between Tc+ and Tc− groups, and across cardiac stages. Receivers operating characteristic (ROC) curves were created; for markers with area under curve>0.60, logistic regression was performed. Results Analyses stratified by cardiac stage showed no significant differences in biomarker levels by Tc infection status. Among Tc+ individuals, those with cardiac insufficiency had higher levels of BNP, NTproBNP, troponin I, MMP-2, TIMP-1, and TIMP-2 than those with normal ejection fraction and left ventricular diameter. No individual marker distinguished between the two earliest Tc+ stages, but in ROC-based analyses, MMP-2/MMP-9 ratio was significantly higher in those with than those without ECG abnormalities. Conclusions BNP, NTproBNP, troponin I, MMP-2, TIMP-1, and TIMP-2 levels rose with increasing severity stage but did not distinguish between Chagas cardiomyopathy and other cardiomyopathies. Among Tc+ individuals without cardiac insufficiency, only the MMP-2/MMP-9 ratio differed between those with and without ECG changes. In Chagas disease, a parasitic disease found primarily in Central and South America, individuals are chronically infected with the parasite Trypanosoma cruzi. A few decades after initial infection, 20–30% of infected individuals will develop cardiac disease. If we were able to predict which individuals would progress to cardiac disease, treatment in these low resource areas could be targeted to those at highest risk. The ideal transition point to identify those at risk would be as individuals progress from a normal electrocardiogram to an abnormal electrocardiogram, the first step in the progression of cardiac disease. Previous studies have suggested a group of serum biomarkers able to differentiate between these stages of disease. However, our larger and more comprehensive study finds that none of the ten cardiac and remodeling biomarkers we tested are able to distinguish between healthy individuals and those with the earliest evidence of cardiac disease. We did find cardiac biomarkers to be elevated in those with severe cardiac disease as expected in both T. cruzi infected and uninfected individuals.
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Affiliation(s)
- Emi E Okamoto
- New York University School of Medicine, New York, New York, United States of America
| | - Jacqueline E Sherbuk
- New York University School of Medicine, New York, New York, United States of America
| | - Eva H Clark
- Baylor College of Medicine, Houston, Texas, United States of America
| | - Morgan A Marks
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Omar Gandarilla
- Beth Israel Deaconess, Boston, Massachusetts, United States of America
| | - Gerson Galdos-Cardenas
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | | | - Jeong Choi
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Thomas C Crawford
- University of Michigan School of Medicine, Ann Arbor, Michigan, United States of America
| | | | - Rose Q
- VA Medical Center and University of Colorado School of Medicine, Denver, Colorado, United States of America
| | | | - Rony Colanzi
- Universidad Catolica Boliviana, Santa Cruz, Plurinational State of Bolivia
| | | | - Robert H Gilman
- Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Caryn Bern
- University of California San Francisco, San Francisco, California, United States of America
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Vitamin D-binding protein controls T cell responses to vitamin D. BMC Immunol 2014; 15:35. [PMID: 25230725 PMCID: PMC4177161 DOI: 10.1186/s12865-014-0035-2] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 08/29/2014] [Indexed: 12/24/2022] Open
Abstract
Background In vitro studies have shown that the active form of vitamin D3, 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3), can regulate differentiation of CD4+ T cells by inhibiting Th1 and Th17 cell differentiation and promoting Th2 and Treg cell differentiation. However, the serum concentration of 1,25(OH)2D3 is far below the effective concentration of 1,25(OH)2D3 found in in vitro studies, and it has been suggested that 1,25(OH)2D3 must be produced locally from the inactive precursor 25-hydroxyvitamin D3 (25(OH)D3) to affect ongoing immune responses in vivo. Although it has been reported that activated T cells express the 25(OH)D-1α-hydroxylase CYP27B1 that converts 25(OH)D3 to 1,25(OH)2D3, it is still controversial whether activated T cells have the capacity to produce sufficient amounts of 1,25(OH)2D3 to affect vitamin D-responsive genes. Furthermore, it is not known how the vitamin D-binding protein (DBP) found in high concentrations in serum affects T cell responses to 25(OH)D3. Results We found that activated T cells express CYP27B1 and have the capacity to produce sufficient 1,25(OH)2D3 to affect vitamin D-responsive genes when cultured with physiological concentrations of 25(OH)D3 in serum-free medium. However, if the medium was supplemented with serum or purified DBP, DBP strictly inhibited the production of 1,25(OH)2D3 and 25(OH)D3-induced T cell responses. In contrast, DBP did not inhibit the effect of exogenous 1,25(OH)2D3. Actin, arachidonic acid and albumin did not affect the sequestration of 25(OH)D3 by DBP, whereas carbonylation of DBP did. Conclusions Activated T cells express CYP27B1 and can convert 25(OH)D3 to 1,25(OH)2D3 in sufficiently high concentrations to affect vitamin D-responsive genes when cultured in serum-free medium. However, DBP sequesters 25(OH)D3 and inhibits the production of 1,25(OH)2D3 in T cells. To fully exploit the immune-regulatory potential of vitamin D, future studies of the mechanisms that enable the immune system to exploit 25(OH)D3 and convert it to 1,25(OH)2D3in vivo are required. Electronic supplementary material The online version of this article (doi:10.1186/s12865-014-0035-2) contains supplementary material, which is available to authorized users.
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Nagarkatti R, de Araujo FF, Gupta C, Debrabant A. Aptamer based, non-PCR, non-serological detection of Chagas disease biomarkers in Trypanosoma cruzi infected mice. PLoS Negl Trop Dis 2014; 8:e2650. [PMID: 24454974 PMCID: PMC3894185 DOI: 10.1371/journal.pntd.0002650] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 12/03/2013] [Indexed: 12/18/2022] Open
Abstract
Chagas disease affects about 5 million people across the world. The etiological agent, the intracellular parasite Trypanosoma cruzi (T. cruzi), can be diagnosed using microscopy, serology or PCR based assays. However, each of these methods has their limitations regarding sensitivity and specificity, and thus to complement these existing diagnostic methods, alternate assays need to be developed. It is well documented that several parasite proteins called T. cruzi Excreted Secreted Antigens (TESA), are released into the blood of an infected host. These circulating parasite antigens could thus be used as highly specific biomarkers of T. cruzi infection. In this study, we have demonstrated that, using a SELEx based approach, parasite specific ligands called aptamers, can be used to detect TESA in the plasma of T. cruzi infected mice. An Enzyme Linked Aptamer (ELA) assay, similar to ELISA, was developed using biotinylated aptamers to demonstrate that these RNA ligands could interact with parasite targets. Aptamer L44 (Apt-L44) showed significant and specific binding to TESA as well as T. cruzi trypomastigote extract and not to host proteins or proteins of Leishmania donovani, a related trypanosomatid parasite. Our result also demonstrated that the target of Apt-L44 is conserved in three different strains of T. cruzi. In mice infected with T. cruzi, Apt-L44 demonstrated a significantly higher level of binding compared to non-infected mice suggesting that it could detect a biomarker of T. cruzi infection. Additionally, Apt-L44 could detect these circulating biomarkers in both the acute phase, from 7 to 28 days post infection, and in the chronic phase, from 55 to 230 days post infection. Our results show that Apt-L44 could thus be used in a qualitative ELA assay to detect biomarkers of Chagas disease. Chagas disease, caused by the parasite Trypanosoma cruzi, is a major health concern for people living in Latin America. There are no vaccines to prevent this disease and only two drugs are prescribed for treatment. Current methods to diagnose patients are not always successful and thus new methods need to be developed. One approach to develop an alternate method is to detect proteins and metabolites that are secreted by parasites into the blood of infected individuals. We have utilized a selection based method to isolate ligands that bind to these secreted proteins. These ligands, called aptamers, have been used to develop an assay that can detect the circulating parasite targets in the plasma or serum of an infected host. In an animal model of Chagas disease, our assay can detect parasite biomarkers as early as seven days after infection and as late as 230 days post infection. As the laboratory instruments and procedures are similar to performing an ELISA, the aptamer assay reported here could be easily performed at diagnostic facilities. Further improvement in this assay can lead to a new quantitative diagnostic test for Chagas disease. A similar selection based approach could also be used to develop ligands for the detection of biomarkers in other diseases.
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Affiliation(s)
- Rana Nagarkatti
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, U. S. Food and Drug Administration, Bethesda, Maryland, United States of America
| | - Fernanda Fortes de Araujo
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, U. S. Food and Drug Administration, Bethesda, Maryland, United States of America
| | - Charu Gupta
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, U. S. Food and Drug Administration, Bethesda, Maryland, United States of America
| | - Alain Debrabant
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, U. S. Food and Drug Administration, Bethesda, Maryland, United States of America
- * E-mail:
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Innate immune responses and antioxidant/oxidant imbalance are major determinants of human Chagas disease. PLoS Negl Trop Dis 2013; 7:e2364. [PMID: 23951383 PMCID: PMC3738450 DOI: 10.1371/journal.pntd.0002364] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 07/01/2013] [Indexed: 01/08/2023] Open
Abstract
Background We investigated the pathological and diagnostic role of selected markers of inflammation, oxidant/antioxidant status, and cellular injury in human Chagas disease. Methods Seropositive/chagasic subjects characterized as clinically-symptomatic or clinically-asymptomatic (n = 116), seronegative/cardiac subjects (n = 102), and seronegative/healthy subjects (n = 45) were analyzed for peripheral blood biomarkers. Results Seropositive/chagasic subjects exhibited an increase in sera or plasma levels of myeloperoxidase (MPO, 2.8-fold), advanced oxidation protein products (AOPP, 56%), nitrite (5.7-fold), lipid peroxides (LPO, 12–17-fold) and malondialdehyde (MDA, 4–6-fold); and a decline in superoxide dismutase (SOD, 52%) and glutathione (GSH, 75%) contents. Correlation analysis identified a significant (p<0.001) linear relationship between inflammatory markers (AOPP/nitrite: r = 0.877), inflammation and antioxidant/oxidant status (AOPP/glutathione peroxidase (GPX): r = 0.902, AOPP/GSH: r = 0.806, Nitrite/GPX: 0.773, Nitrite/LPO: 0.805, MDA/MPO: 0.718), and antioxidant/oxidant levels (GPX/MDA: r = 0.768) in chagasic subjects. Of these, MPO, LPO and nitrite biomarkers were highly specific and sensitive for distinguishing seropositive/chagasic subjects from seronegative/healthy controls (p<0.001, training and fitting AUC/ROC >0.95). The MPO (r = 0.664) and LPO (r = 0.841) levels were also correlated with clinical disease state in chagasic subjects (p<0.001). Seronegative/cardiac subjects exhibited up to 77% decline in SOD, 3–5-fold increase in LPO and glutamate pyruvate transaminase (GPT) levels, and statistically insignificant change in MPO, AOPP, MDA, GPX, GSH, and creatine kinase (CK) levels. Conclusions The interlinked effects of innate immune responses and antioxidant/oxidant imbalance are major determinants of human Chagas disease. The MPO, LPO and nitrite are excellent biomarkers for diagnosing seropositive/chagasic subjects, and MPO and LPO levels have potential utility in identifying clinical severity of Chagas disease. Chagas disease is a chronic disease of the heart, and caused by Trypanosoma cruzi infection. In this study, we have monitored the biomarkers of inflammation caused by innate immune cells, oxidative stress, and antioxidant status in seropositive/chagasic, seronegative/cardiac disease, and seronegative/healthy subjects. Our goal was to evaluate the diagnostic efficacy of selected biomarkers, and determine if any of the biomarkers are good indicators of clinical severity of Chagas disease. We also determined whether sera or plasma serve as a better source, and if sample storage affects the estimation of the selected biomarkers. Our data suggest that innate immune responses and antioxidant/oxidant imbalance are inter-linked pathological events in Chagas disease. We have identified peripheral blood markers (myeloperoxidase, lipid hydroperoxides and nitrite) that strongly distinguish seropositive/chagasic subjects from controls. Further, we found that myeloperoxidase and lipid hydroperoxide levels have potential utility in identifying seropositive subjects at risk of developing clinically symptomatic disease.
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Chugh S, Ouzounian M, Lu Z, Mohamed S, Li W, Bousette N, Liu PP, Gramolini AO. Pilot study identifying myosin heavy chain 7, desmin, insulin-like growth factor 7, and annexin A2 as circulating biomarkers of human heart failure. Proteomics 2013; 13:2324-34. [PMID: 23713052 DOI: 10.1002/pmic.201200455] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 12/25/2022]
Abstract
In-depth proteomic analyses offer a systematic way to investigate protein alterations in disease and, as such, can be a powerful tool for the identification of novel biomarkers. Here, we analyzed proteomic data from a transgenic mouse model with cardiac-specific overexpression of activated calcineurin (CnA), which results in severe cardiac hypertrophy. We applied statistically filtering and false discovery rate correction methods to identify 52 proteins that were significantly different in the CnA hearts compared to controls. Subsequent informatic analysis consisted of comparison of these 52 CnA proteins to another proteomic dataset of heart failure, three available independent microarray datasets, and correlation of their expression with the human plasma and urine proteome. Following this filtering strategy, four proteins passed these selection criteria, including myosin heavy chain 7, insulin-like growth factor-binding protein 7, annexin A2, and desmin. We assessed expression levels of these proteins in mouse plasma by immunoblotting, and observed significantly different levels of expression between healthy and failing mice for all four proteins. We verified antibody cross-reactivity by examining human cardiac explant tissue by immunoblotting. Finally, we assessed protein levels in plasma samples obtained from four unaffected and four heart failure patients and demonstrated that all four proteins increased between twofold and 150-fold in heart failure. We conclude that MYH7, IGFBP7, ANXA2, and DESM are all excellent candidate plasma biomarkers of heart failure in mouse and human.
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Affiliation(s)
- Shaan Chugh
- Department of Physiology, University of Toronto, Toronto, ON, Canada; Heart and Stroke/Richard Lewar Centre of Cardiovascular Excellence, Toronto, ON, Canada
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30
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Goh WWB, Wong L. Networks in proteomics analysis of cancer. Curr Opin Biotechnol 2013; 24:1122-8. [PMID: 23481377 DOI: 10.1016/j.copbio.2013.02.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/07/2013] [Accepted: 02/09/2013] [Indexed: 01/08/2023]
Abstract
Proteomics provides direct biological information on proteins but is still a limited platform. Borrowing from genomics, its cancer-specific applications can be broadly categorized as (1) pure diagnostics, (2) biomarkers, (3) identification of root causes and (4) identification of cancer-specific network rewirings. Biological networks capture complex relationships between proteins and provide an appropriate means of contextualization. While playing significantly larger roles, especially in 1 and 3, progress in proteomics-specific network-based methods is lagging as compared to genomics. Rapid hardware advances and improvements in proteomic identification and quantification have given rise to much better quality data alongside advent of new network-based analysis methods. However, a tighter integration between analytics and hardware is still essential for network analysis to play more significant roles in proteomics analysis.
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Affiliation(s)
- Wilson Wen Bin Goh
- Department of Computer Science, National University of Singapore, COM1 Building, 13 Computing Drive, Singapore 117417, Singapore; Department of Computing, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
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Dumonteil E, Bottazzi ME, Zhan B, Heffernan MJ, Jones K, Valenzuela JG, Kamhawi S, Ortega J, de Leon Rosales SP, Lee BY, Bacon KM, Fleischer B, Slingsby BT, Cravioto MB, Tapia-Conyer R, Hotez PJ. Accelerating the development of a therapeutic vaccine for human Chagas disease: rationale and prospects. Expert Rev Vaccines 2012; 11:1043-55. [PMID: 23151163 PMCID: PMC3819810 DOI: 10.1586/erv.12.85] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chagas disease is a leading cause of heart disease affecting approximately 10 million people in Latin America and elsewhere worldwide. The two major drugs available for the treatment of Chagas disease have limited efficacy in Trypanosoma cruzi-infected adults with indeterminate (patients who have seroconverted but do not yet show signs or symptoms) and determinate (patients who have both seroconverted and have clinical disease) status; they require prolonged treatment courses and are poorly tolerated and expensive. As an alternative to chemotherapy, an injectable therapeutic Chagas disease vaccine is under development to prevent or delay Chagasic cardiomyopathy in patients with indeterminate or determinate status. The bivalent vaccine will be comprised of two recombinant T. cruzi antigens, Tc24 and TSA-1, formulated on alum together with the Toll-like receptor 4 agonist, E6020. Proof-of-concept for the efficacy of these antigens was obtained in preclinical testing at the Autonomous University of Yucatan. Here the authors discuss the potential for a therapeutic Chagas vaccine as well as the progress made towards such a vaccine, and the authors articulate a roadmap for the development of the vaccine as planned by the nonprofit Sabin Vaccine Institute Product Development Partnership and Texas Children's Hospital Center for Vaccine Development in collaboration with an international consortium of academic and industrial partners in Mexico, Germany, Japan, and the USA.
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Affiliation(s)
- Eric Dumonteil
- Laboratorio de Parasitología Centro De Investigaciones Regional, “Dr. Hideo Noguchi” Autonomous University of Yucatan (UADY), Merida, Mexico
| | - Maria Elena Bottazzi
- Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development, Departments of Pediatrics (Section of Pediatric Tropical Medicine) and Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Bin Zhan
- Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development, Department of Pediatrics (Section of Pediatric Tropical Medicine), National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Michael J Heffernan
- Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development, Department of Pediatrics (Section of Pediatric Tropical Medicine), National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Kathryn Jones
- Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development, Departments of Pediatrics (Section of Pediatric Tropical Medicine) and Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jesus G Valenzuela
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Shaden Kamhawi
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Jaime Ortega
- Departamento de Biotecnología y Bioingeniería, Centro de Investigacion y de Estudios Avanzados - Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | | | - Bruce Y Lee
- Public Health Computational and Operations Research (PHICOR), University of Pittsburgh, Pittsburgh PA, USA
| | - Kristina M Bacon
- Public Health Computational and Operations Research (PHICOR), University of Pittsburgh, Pittsburgh PA, USA
| | | | | | | | | | - Peter J Hotez
- Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development, Departments of Pediatrics (Section of Pediatric Tropical Medicine) and Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
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