101
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Romano R, Giardino G, Cirillo E, Prencipe R, Pignata C. Complement system network in cell physiology and in human diseases. Int Rev Immunol 2020; 40:159-170. [PMID: 33063546 DOI: 10.1080/08830185.2020.1833877] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The complement system is a multi-functional system representing the first line host defense against pathogens in innate immune response, through three different pathways. Impairment of its function, consisting in deficiency or excessive deregulated activation, may lead to severe systemic infections or autoimmune disorders. These diseases may be inherited or acquired. Despite many diagnostic tools are currently available, ranging from traditional, such as hemolytic or ELISA based assays, to innovative ones, like next generation sequencing techniques, these diseases are often not recognized. As for therapeutic aspects, strategies based on the use of targeted drugs are now widespread. The aim of this review is to present an updated overview of complement system pathophysiology, clinical implications of its dysfunction and to summarize diagnostic and therapeutic approaches.
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Affiliation(s)
- Roberta Romano
- Department of Translational Medical Sciences - Section of Pediatrics, Federico II University of Naples, Naples, Italy
| | - Giuliana Giardino
- Department of Translational Medical Sciences - Section of Pediatrics, Federico II University of Naples, Naples, Italy
| | - Emilia Cirillo
- Department of Translational Medical Sciences - Section of Pediatrics, Federico II University of Naples, Naples, Italy
| | - Rosaria Prencipe
- Department of Translational Medical Sciences - Section of Pediatrics, Federico II University of Naples, Naples, Italy
| | - Claudio Pignata
- Department of Translational Medical Sciences - Section of Pediatrics, Federico II University of Naples, Naples, Italy
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102
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Bergmann M, Jeanneau C, Giraud T, Richard G, About I. Complement activation links inflammation to dental tissue regeneration. Clin Oral Investig 2020; 24:4185-4196. [PMID: 33051813 DOI: 10.1007/s00784-020-03621-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/01/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Complement is an efficient plasma immune surveillance system. It initiates inflammation by inducing vascular modifications and attracting immune cells expressing Complement receptors. Investigating Complement receptors in non-immune cells pointed out Complement implication in the regeneration of tissue such as liver, skin, or bone. This review will shed the light on Complement implication in the initial steps of dental tissue regeneration. MATERIALS AND METHODS Review of literature was conducted on Complement local expression and implication in oral tissue regeneration in vivo and in vitro. RESULTS Recent data reported expression of Complement receptors and soluble proteins in dental tissues. Cultured pulp fibroblasts secrete all Complement components. Complement C3b and MAC have been shown to control bacteria growth in the dental pulp while C3a and C5a are involved in the initial steps of pulp regeneration. Indeed, C3a induces pulp stem cell/fibroblast proliferation, and fibroblast recruitment, while C5a induces neurite growth, guides stem cell recruitment, and odontoblastic differentiation. Similarly, cultured periodontal ligament cells produce C5a which induces bone marrow mesenchymal stem cell recruitment. CONCLUSIONS Overall, this review highlights that local Complement synthesis in dental tissues plays a major role, not only in eliminating bacteria but also in the initial steps of dental tissue regeneration, thus providing a link between dental tissue inflammation and regeneration. CLINICAL RELEVANCE Complement provides an explanation for understanding why inflammation preceeds regeneration. This may also provide a biological rational for understanding the reported success conservative management of mature permanent teeth with carious pulp exposure.
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Affiliation(s)
- Madison Bergmann
- Aix Marseille Univ, CNRS, ISM, Inst Movement Sci, Marseille, France
| | | | - Thomas Giraud
- Aix Marseille Univ, CNRS, ISM, Inst Movement Sci, Marseille, France
- APHM, Hôpital Timone Marseille, Service d'Odontologie, Marseille, France
| | | | - Imad About
- Aix Marseille Univ, CNRS, ISM, Inst Movement Sci, Marseille, France.
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103
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Lameiras JLV, de Moura VM, Dias LC, Pessoa Júnior ER, Mallmann CSY, Costa AG, Lasmar ML, Nunez CV, da Costa OTF, Dos-Santos MC. Neutralization of the edema-forming and myotoxic activities of the venom of Potamotrygon motoro Müller and Henle, 1841 (Chondrichthyes – Potamotrygoninae) by antivenoms and circulating immunoglobulins. Toxicon 2020; 186:126-140. [DOI: 10.1016/j.toxicon.2020.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/04/2020] [Accepted: 08/09/2020] [Indexed: 11/15/2022]
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104
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Abouhamda A. Pentraxin-3, Interleukin-6, and Acute Appendicitis: Biomarkers That Need Further Exploration. Cureus 2020; 12:e9991. [PMID: 32983691 PMCID: PMC7511078 DOI: 10.7759/cureus.9991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Acute appendicitis is one of the most common abdominal emergencies that present in the hospital. With acute appendicitis, there is always a possibility of complications of perforation and peritonitis. Even though medicine has advanced substantially in different investigational modalities, appendicitis is confirmed clinically with the aid of a clinical approach (i.e., Alvarado Score), laboratory, and investigational modalities. However, biomarkers such as pentraxin-3 and interleukin-6 have been recently researched to assess the possibility of confirming the diagnosis of acute appendicitis in both adults and the pediatric age group. This article breaks down the previous research on pentraxin-3 and interleukin-6 biomarkers in relation to appendicitis and proposes a new hypothetical way of confirming the diagnosis.
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Affiliation(s)
- Ayman Abouhamda
- Independent Researcher, National Coalition of Independent Scholars, Jeddah, SAU
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105
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Liu W. Complement proteins detected through iTRAQ-based proteomics analysis of serum from black carp Mylopharyngodon piceus in response to experimentally induced Aeromonas hydrophila infection. DISEASES OF AQUATIC ORGANISMS 2020; 140:187-201. [PMID: 32815527 DOI: 10.3354/dao03497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The black carp Mylopharyngodon piceus is one of the culturally important '4 famous domestic fishes' in China. Recently, infectious diseases caused by Aeromonas hydrophila have drastically altered the operation of the black carp farming industry. In the present study, isobaric tags for relative and absolute quantitation (iTRAQ) were combined with mass spectrometry analysis to screen for differentially abundant black carp serum proteins in response to experimentally induced A. hydrophila infection. A total of 86 differentially abundant proteins were quantified at 24 h post-infection, including 78 down-regulated proteins and 8 up-regulated proteins. The down-regulated proteins included complement C1q subcomponent subunit C, complement factor B/C2A, complement factor B/C2B, complement C3-Q1, complement C3, and complement C4-2. Bioinformatic analysis indicated that the differentially abundant proteins were mainly associated with complement and coagulation cascades (27.9%). Moreover, real-time PCR (qPCR) analysis revealed changes in the gene expression of both C3 and B/C2A in blood cells, liver, kidney, gills, and intestines of the black carp infected with A. hydrophila. However, mRNA expression levels did not consistently correlate with the corresponding protein levels. A polyclonal antibody was prepared using a synthetic C3 peptide. Immunofluorescence analysis showed that the expression of C3 in the kidney was increased with A. hydrophila infection. This work provides a useful characterization of the impact of A. hydrophila infection on the complement system of the black carp.
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Affiliation(s)
- Wen Liu
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, School of Life Science, Huzhou University, Huzhou 313000, PR China
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106
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Lasola JJM, Kamdem H, McDaniel MW, Pearson RM. Biomaterial-Driven Immunomodulation: Cell Biology-Based Strategies to Mitigate Severe Inflammation and Sepsis. Front Immunol 2020; 11:1726. [PMID: 32849612 PMCID: PMC7418829 DOI: 10.3389/fimmu.2020.01726] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/29/2020] [Indexed: 12/11/2022] Open
Abstract
Inflammation is an essential component of a wide variety of disease processes and oftentimes can increase the deleterious effects of a disease. Finding ways to modulate this essential immune process is the basis for many therapeutics under development and is a burgeoning area of research for both basic and translational immunology. In addition to developing therapeutics for cellular and molecular targets, the use of biomaterials to modify innate and adaptive immune responses is an area that has recently sparked significant interest. In particular, immunomodulatory activity can be engineered into biomaterials to elicit heightened or dampened immune responses for use in vaccines, immune tolerance, or anti-inflammatory applications. Importantly, the inherent physicochemical properties of the biomaterials play a significant role in determining the observed effects. Properties including composition, molecular weight, size, surface charge, and others affect interactions with immune cells (i.e., nano-bio interactions) and allow for differential biological responses such as activation or inhibition of inflammatory signaling pathways, surface molecule expression, and antigen presentation to be encoded. Numerous opportunities to open new avenues of research to understand the ways in which immune cells interact with and integrate information from their environment may provide critical solutions needed to treat a variety of disorders and diseases where immune dysregulation is a key inciting event. However, to elicit predictable immune responses there is a great need for a thorough understanding of how the biomaterial properties can be tuned to harness a designed immunological outcome. This review aims to systematically describe the biological effects of nanoparticle properties-separate from additional small molecule or biologic delivery-on modulating innate immune cell responses in the context of severe inflammation and sepsis. We propose that nanoparticles represent a potential polypharmacological strategy to simultaneously modify multiple aspects of dysregulated immune responses where single target therapies have fallen short for these applications. This review intends to serve as a resource for immunology labs and other associated fields that would like to apply the growing field of rationally designed biomaterials into their work.
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Affiliation(s)
- Jackline Joy Martín Lasola
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Henry Kamdem
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, United States
| | - Michael W. McDaniel
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, United States
| | - Ryan M. Pearson
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, United States
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, United States
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107
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Girardi G, Lingo JJ, Fleming SD, Regal JF. Essential Role of Complement in Pregnancy: From Implantation to Parturition and Beyond. Front Immunol 2020; 11:1681. [PMID: 32849586 PMCID: PMC7411130 DOI: 10.3389/fimmu.2020.01681] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 06/23/2020] [Indexed: 12/12/2022] Open
Abstract
The complement cascade was identified over 100 years ago, yet investigation of its role in pregnancy remains an area of intense research. Complement inhibitors at the maternal-fetal interface prevent inappropriate complement activation to protect the fetus. However, this versatile proteolytic cascade also favorably influences numerous stages of pregnancy, including implantation, fetal development, and labor. Inappropriate complement activation in pregnancy can have adverse lifelong sequelae for both mother and child. This review summarizes the current understanding of complement activation during all stages of pregnancy. In addition, consequences of complement dysregulation during adverse pregnancy outcomes from miscarriage, preeclampsia, and pre-term birth are examined. Finally, future research directions into complement activation during pregnancy are considered.
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Affiliation(s)
- Guillermina Girardi
- Department of Basic Medical Sciences, College of Medicine, Member of QU Health, Qatar University, Doha, Qatar
| | - Joshua J Lingo
- Division of Biology, Kansas State University, Manhattan, KS, United States
| | - Sherry D Fleming
- Division of Biology, Kansas State University, Manhattan, KS, United States
| | - Jean F Regal
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN, United States
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108
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Mellors J, Tipton T, Longet S, Carroll M. Viral Evasion of the Complement System and Its Importance for Vaccines and Therapeutics. Front Immunol 2020; 11:1450. [PMID: 32733480 PMCID: PMC7363932 DOI: 10.3389/fimmu.2020.01450] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/04/2020] [Indexed: 12/17/2022] Open
Abstract
The complement system is a key component of innate immunity which readily responds to invading microorganisms. Activation of the complement system typically occurs via three main pathways and can induce various antimicrobial effects, including: neutralization of pathogens, regulation of inflammatory responses, promotion of chemotaxis, and enhancement of the adaptive immune response. These can be vital host responses to protect against acute, chronic, and recurrent viral infections. Consequently, many viruses (including dengue virus, West Nile virus and Nipah virus) have evolved mechanisms for evasion or dysregulation of the complement system to enhance viral infectivity and even exacerbate disease symptoms. The complement system has multifaceted roles in both innate and adaptive immunity, with both intracellular and extracellular functions, that can be relevant to all stages of viral infection. A better understanding of this virus-host interplay and its contribution to pathogenesis has previously led to: the identification of genetic factors which influence viral infection and disease outcome, the development of novel antivirals, and the production of safer, more effective vaccines. This review will discuss the antiviral effects of the complement system against numerous viruses, the mechanisms employed by these viruses to then evade or manipulate this system, and how these interactions have informed vaccine/therapeutic development. Where relevant, conflicting findings and current research gaps are highlighted to aid future developments in virology and immunology, with potential applications to the current COVID-19 pandemic.
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Affiliation(s)
- Jack Mellors
- Public Health England, National Infection Service, Salisbury, United Kingdom.,Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Tom Tipton
- Public Health England, National Infection Service, Salisbury, United Kingdom
| | - Stephanie Longet
- Public Health England, National Infection Service, Salisbury, United Kingdom
| | - Miles Carroll
- Public Health England, National Infection Service, Salisbury, United Kingdom
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109
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Cerqueira A, Romero-Gavilán F, Araújo-Gomes N, García-Arnáez I, Martinez-Ramos C, Ozturan S, Azkargorta M, Elortza F, Gurruchaga M, Suay J, Goñi I. A possible use of melatonin in the dental field: Protein adsorption and in vitro cell response on coated titanium. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111262. [PMID: 32806297 DOI: 10.1016/j.msec.2020.111262] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 01/06/2023]
Abstract
Melatonin (MLT) is widely known for regulating the circadian cycles and has been studied for its role in bone regeneration and inflammation. Its application as a coating for dental implants can condition the local microenvironment, affecting protein deposition on its surface and the cellular and tissue response. Using sol-gel coatings as a release vehicle for MLT, the aim of this work was to assess the potential of this molecule in improving the osseointegration and inflammatory responses of a titanium substrate. The materials obtained were physicochemically characterized (scanning electron microscopy, contact angle, roughness, Fourier-transform infrared spectroscopy, nuclear magnetic resonance, Si release, MLT liberation, and degradation) and studied in vitro with MC3T3-E1 osteoblastic cells and RAW264.7 macrophage cells. Although MLT application led to an increased gene expression of RUNX2 and BMP2 in 10MTL, it did not improve ALP activity. On the other hand, MLT-enriched sol-gel materials presented potential effects in the adsorption of proteins related to inflammation, coagulation and angiogenesis pathways depending on the dosage used. Using LC-MS/MS, protein adsorption patterns were studied after incubation with human serum. Proteins related to the complement systems (CO7, IC1, CO5, CO8A, and CO9) were less adsorbed in materials with MLT; on the other hand, proteins with functions in the coagulation and angiogenesis pathways, such as A2GL and PLMN, showed a significant adsorption pattern.
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Affiliation(s)
- Andreia Cerqueira
- Department of Industrial Systems Engineering and Design, Universitat Jaume I, Av. Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain
| | - Francisco Romero-Gavilán
- Department of Industrial Systems Engineering and Design, Universitat Jaume I, Av. Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain.
| | - Nuno Araújo-Gomes
- Department of Developmental Bioengineering, University of Twente, Faculty of Science and Technology, 7522LW Enschede, the Netherlands
| | - Iñaki García-Arnáez
- Facultad de Ciencias Químicas, Universidad del País Vasco, P. M. de Lardizábal, 3, 20018 San Sebastián, Spain
| | - Cristina Martinez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de Valencia, Camino de Vera, s/n, 46022 Valencia, Spain
| | - Seda Ozturan
- Department of Periodontology, Faculty of Dentristy, Istambul Medeniyet University, Istanbul, Turkey
| | - Mikel Azkargorta
- Proteomics Platform, CIC bioGUNE, CIBERehd, ProteoRed-ISCIII, Bizkaia Science and Technology Park, 48160 Derio, Spain
| | - Félix Elortza
- Proteomics Platform, CIC bioGUNE, CIBERehd, ProteoRed-ISCIII, Bizkaia Science and Technology Park, 48160 Derio, Spain
| | - Mariló Gurruchaga
- Facultad de Ciencias Químicas, Universidad del País Vasco, P. M. de Lardizábal, 3, 20018 San Sebastián, Spain
| | - Julio Suay
- Department of Industrial Systems Engineering and Design, Universitat Jaume I, Av. Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain
| | - Isabel Goñi
- Facultad de Ciencias Químicas, Universidad del País Vasco, P. M. de Lardizábal, 3, 20018 San Sebastián, Spain
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110
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Loss of Complement Factor H impairs antioxidant capacity and energy metabolism of human RPE cells. Sci Rep 2020; 10:10320. [PMID: 32587311 PMCID: PMC7316856 DOI: 10.1038/s41598-020-67292-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/19/2020] [Indexed: 12/28/2022] Open
Abstract
Polymorphisms in the Complement Factor H (CFH) gene, coding for the Factor H protein (FH), can increase the risk for age-related macular degeneration (AMD). AMD-associated CFH risk variants, Y402H in particular, impair FH function leading to complement overactivation. Whether this alone suffices to trigger AMD pathogenesis remains unclear. In AMD, retinal homeostasis is compromised due to the dysfunction of retinal pigment epithelium (RPE) cells. To investigate the impact of endogenous FH loss on RPE cell balance, we silenced CFH in human hTERT-RPE1 cells. FH reduction led to accumulation of C3, at both RNA and protein level and increased RPE vulnerability toward oxidative stress. Mild hydrogen-peroxide exposure in combination with CFH knock-down led to a reduction of glycolysis and mitochondrial respiration, paralleled by an increase in lipid peroxidation, which is a key aspect of AMD pathogenesis. In parallel, cell viability was decreased. The perturbations of energy metabolism were accompanied by transcriptional deregulation of several glucose metabolism genes as well as genes modulating mitochondrial stability. Our data suggest that endogenously produced FH contributes to transcriptional and metabolic homeostasis and protects RPE cells from oxidative stress, highlighting a novel role of FH in AMD pathogenesis.
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111
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Fernández-Vega Cueto A, Álvarez L, García M, Artime E, Álvarez Barrios A, Rodríguez-Uña I, Coca-Prados M, González-Iglesias H. Systemic Alterations of Immune Response-Related Proteins during Glaucoma Development in the Murine Model DBA/2J. Diagnostics (Basel) 2020; 10:E425. [PMID: 32585848 PMCID: PMC7345206 DOI: 10.3390/diagnostics10060425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 11/20/2022] Open
Abstract
Animal models of glaucoma, a neurodegenerative disease affecting the retina, offer the opportunity to study candidate molecular biomarkers throughout the disease. In this work, the DBA/2J glaucomatous mouse has been used to study the systemic levels of several proteins previously identified as potential biomarkers of glaucoma, along the pre- to post-glaucomatous transition. Serum samples obtained from glaucomatous and control mice at 4, 10, and 14 months, were classified into different experimental groups according to the optic nerve damage at 14 months old. Quantifications of ten serum proteins were carried out by enzyme immunoassays. Changes in the levels of some of these proteins in the transition to glaucomatous stages were identified, highlighting the significative decrease in the concentration of complement C4a protein. Moreover, the five-protein panel consisting of complement C4a, complement factor H, ficolin-3, apolipoprotein A4, and transthyretin predicted the transition to glaucoma in 78% of cases, and to the advanced disease in 89%. Our data, although still preliminary, suggest that disease development in DBA/2J mice is associated with important molecular changes in immune response and complement system proteins and demonstrate the utility of this model in identifying, at systemic level, potential markers for the diagnosis of glaucoma.
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Affiliation(s)
- Andrés Fernández-Vega Cueto
- Instituto Oftalmológico Fernández-Vega, Avenida Doctores Fernández-Vega, 34, 33012 Oviedo, Spain; (A.F.-V.C.); (M.G.); (I.R.-U.)
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
| | - Lydia Álvarez
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
| | - Montserrat García
- Instituto Oftalmológico Fernández-Vega, Avenida Doctores Fernández-Vega, 34, 33012 Oviedo, Spain; (A.F.-V.C.); (M.G.); (I.R.-U.)
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
| | - Enol Artime
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
| | - Ana Álvarez Barrios
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
| | - Ignacio Rodríguez-Uña
- Instituto Oftalmológico Fernández-Vega, Avenida Doctores Fernández-Vega, 34, 33012 Oviedo, Spain; (A.F.-V.C.); (M.G.); (I.R.-U.)
| | - Miguel Coca-Prados
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
- Department of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Héctor González-Iglesias
- Instituto Oftalmológico Fernández-Vega, Avenida Doctores Fernández-Vega, 34, 33012 Oviedo, Spain; (A.F.-V.C.); (M.G.); (I.R.-U.)
- Instituto Universitario Fernández-Vega (Fundación de Investigación Oftalmológica, Universidad de Oviedo), 33012 Oviedo, Spain; (E.A.); (A.Á.B.); (M.C.-P.)
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112
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García-Rivas G, Castillo EC, Gonzalez-Gil AM, Maravillas-Montero JL, Brunck M, Torres-Quintanilla A, Elizondo-Montemayor L, Torre-Amione G. The role of B cells in heart failure and implications for future immunomodulatory treatment strategies. ESC Heart Fail 2020; 7:1387-1399. [PMID: 32533765 PMCID: PMC7373901 DOI: 10.1002/ehf2.12744] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/10/2020] [Accepted: 04/20/2020] [Indexed: 12/17/2022] Open
Abstract
Despite numerous demonstrations that the immune system is activated in heart failure, negatively affecting patients' outcomes, no definitive treatment strategy exists directed to modulate the immune system. In this review, we present the evidence that B cells contribute to the development of hypertrophy, inflammation, and maladaptive tissue remodelling. B cells produce antibodies that interfere with cardiomyocyte function, which culminates as the result of recruitment and activation of a variety of innate and structural cell populations, including neutrophils, macrophages, fibroblasts, and T cells. As B cells appear as active players in heart failure, we propose here novel immunomodulatory therapeutic strategies that target B cells and their products.
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Affiliation(s)
- Gerardo García-Rivas
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico.,Tecnologico de Monterrey, Hospital Zambrano Hellion, TecSalud, Centro de Investigación Biomédica, San Pedro Garza García, Nuevo León, Mexico
| | - Elena Cristina Castillo
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico
| | - Adrian M Gonzalez-Gil
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico
| | - José Luis Maravillas-Montero
- Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Marion Brunck
- Tecnologico de Monterrey, School of Engineering and Science, FEMSA Biotechnology Center, Monterrey, Nuevo León, Mexico
| | - Alejandro Torres-Quintanilla
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico
| | - Leticia Elizondo-Montemayor
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico.,Tecnologico de Monterrey, Hospital Zambrano Hellion, TecSalud, Centro de Investigación Biomédica, San Pedro Garza García, Nuevo León, Mexico
| | - Guillermo Torre-Amione
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico.,Tecnologico de Monterrey, Hospital Zambrano Hellion, TecSalud, Centro de Investigación Biomédica, San Pedro Garza García, Nuevo León, Mexico.,Weill Cornell Medical College, Methodist DeBakey Heart & Vascular Center, The Methodist Hospital, Houston, TX, USA
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Pandey S, Maharana J, Li XX, Woodruff TM, Shukla AK. Emerging Insights into the Structure and Function of Complement C5a Receptors. Trends Biochem Sci 2020; 45:693-705. [PMID: 32402749 DOI: 10.1016/j.tibs.2020.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/06/2020] [Accepted: 04/14/2020] [Indexed: 12/14/2022]
Abstract
Complement factor C5a is an integral constituent of the complement cascade critically involved in the innate immune response, and it exerts its functions via two distinct receptors, C5aR1 and C5aR2. While C5aR1 is a prototypical G-protein-coupled receptor (GPCR), C5aR2 lacks functional coupling to heterotrimeric G proteins, although both receptors efficiently recruit β arrestins (βarrs). Here, we discuss the recent studies providing direct structural details of ligand-receptor interactions, and a framework of functional bias in this system, including the differences in terms of structural motifs and transducer coupling. We also discuss the functional analogy of C5aR2 with the atypical chemokine receptors (ACKRs), and highlight the future directions to elucidate the mechanistic basis of the functional divergence of these receptors activated by a common natural agonist.
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Affiliation(s)
- Shubhi Pandey
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India
| | - Jagannath Maharana
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India
| | - Xaria X Li
- The School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane 4072, Australia
| | - Trent M Woodruff
- The School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane 4072, Australia; Queensland Brain Institute, The University of Queensland, Brisbane 4072, Australia.
| | - Arun K Shukla
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India.
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Brodszki N, Frazer-Abel A, Grumach AS, Kirschfink M, Litzman J, Perez E, Seppänen MRJ, Sullivan KE, Jolles S. European Society for Immunodeficiencies (ESID) and European Reference Network on Rare Primary Immunodeficiency, Autoinflammatory and Autoimmune Diseases (ERN RITA) Complement Guideline: Deficiencies, Diagnosis, and Management. J Clin Immunol 2020; 40:576-591. [PMID: 32064578 PMCID: PMC7253377 DOI: 10.1007/s10875-020-00754-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 01/20/2020] [Indexed: 12/14/2022]
Abstract
This guideline aims to describe the complement system and the functions of the constituent pathways, with particular focus on primary immunodeficiencies (PIDs) and their diagnosis and management. The complement system is a crucial part of the innate immune system, with multiple membrane-bound and soluble components. There are three distinct enzymatic cascade pathways within the complement system, the classical, alternative and lectin pathways, which converge with the cleavage of central C3. Complement deficiencies account for ~5% of PIDs. The clinical consequences of inherited defects in the complement system are protean and include increased susceptibility to infection, autoimmune diseases (e.g., systemic lupus erythematosus), age-related macular degeneration, renal disorders (e.g., atypical hemolytic uremic syndrome) and angioedema. Modern complement analysis allows an in-depth insight into the functional and molecular basis of nearly all complement deficiencies. However, therapeutic options remain relatively limited for the majority of complement deficiencies with the exception of hereditary angioedema and inhibition of an overactivated complement system in regulation defects. Current management strategies for complement disorders associated with infection include education, family testing, vaccinations, antibiotics and emergency planning.
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Affiliation(s)
- Nicholas Brodszki
- Department of Pediatrics, Children's Hospital, Skåne University Hospital, Lund, Sweden
| | - Ashley Frazer-Abel
- Division of Rheumatology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - Anete S Grumach
- Clinical Immunology, Reference Center on Rare Diseases, University Center Health ABC, Santo Andre, SP, Brazil
| | | | - Jiri Litzman
- Department of Clinical Immunology and Allergology, St Anne's University Hospital, and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Elena Perez
- Allergy Associates of the Palm Beaches, North Palm Beach, FL, USA
| | - Mikko R J Seppänen
- Rare Disease Center, Children's Hospital, and Adult Primary Immunodeficiency Outpatient Clinic, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kathleen E Sullivan
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stephen Jolles
- Immunodeficiency Centre for Wales, Cardiff University & University Hospital of Wales, Cardiff, UK.
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Chatzidionysiou K, Svenungsson E, Faustini F. Could severe COVID-19 be considered a complementopathy? Lupus Sci Med 2020; 7:e000415. [PMID: 32430402 PMCID: PMC7246101 DOI: 10.1136/lupus-2020-000415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Katerina Chatzidionysiou
- Rheumatology Unit, Karolinska University Hospital, Karolinska Institutet Department of Medicine Solna, Stockholm, Sweden
| | - Elisabet Svenungsson
- Rheumatology Unit, Karolinska University Hospital, Karolinska Institutet Department of Medicine Solna, Stockholm, Sweden
| | - Francesca Faustini
- Rheumatology Unit, Karolinska University Hospital, Karolinska Institutet Department of Medicine Solna, Stockholm, Sweden
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Sharma S, Bhatnagar R, Gaur D. Bacillus anthracis Poly-γ-D-Glutamate Capsule Inhibits Opsonic Phagocytosis by Impeding Complement Activation. Front Immunol 2020; 11:462. [PMID: 32296419 PMCID: PMC7138205 DOI: 10.3389/fimmu.2020.00462] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/28/2020] [Indexed: 01/18/2023] Open
Abstract
Bacillus anthracis poly-γ-D-glutamic acid (PGA) capsule is an essential virulent factor that helps the bacterial pathogen to escape host immunity. Like other encapsulated bacterial species, the B. anthracis capsule may also inhibit complement-mediated clearance and ensure bacterial survival in the host. Previous reports suggest that B. anthracis spore proteins inhibit complement activation. However, the mechanism through which the B. anthracis capsule imparts a survival advantage to the active bacteria has not been demonstrated till date. Thus, to evaluate the role of the PGA capsule in evading host immunity, we have undertaken the present head-to-head comparative study of the phagocytosis and complement activation of non-encapsulated and encapsulated B. anthracis strains. The encapsulated virulent strain exhibited resistance toward complement-dependent and complement-independent bacterial phagocytosis by human macrophages. The non-encapsulated Sterne strain was highly susceptible to phagocytosis by THP-1 macrophages, after incubation with normal human serum (NHS), heat-inactivated serum, and serum-free media, thus indicating that the capsule inhibited both complement-dependent and complement-independent opsonic phagocytosis. An increased binding of C3b and its subsequent activation to C3c and C3dg, which functionally act as potent opsonins, were observed with the non-encapsulated Sterne strain compared with the encapsulated strain. Other known mediators of complement fixation, IgG, C-reactive protein (CRP), and serum amyloid P component (SAP), also bound more prominently with the non-encapsulated Sterne strain. Studies with complement pathway-specific, component-deficient serum demonstrated that the classical pathway was primarily involved in mediating C3b binding on the non-encapsulated bacteria. Both strains equally bound the complement regulatory proteins C4BP and factor H. Importantly, we demonstrated that the negative charge of the PGA capsule was responsible for the differential binding of the complement proteins between the non-encapsulated and encapsulated strains. At lower pH closer to the isoelectric point of PGA, the neutralization of the negative charge was associated with an increased binding of C3b and IgG with the encapsulated B. anthracis strain. Overall, our data have demonstrated that the B. anthracis capsule inhibits complement fixation and opsonization resulting in reduced phagocytosis by macrophages, thus allowing the bacterial pathogen to evade host immunity.
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Affiliation(s)
- Shikhar Sharma
- Laboratory of Malaria and Vaccine Research, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Rakesh Bhatnagar
- Molecular Biology and Genetic Engineering Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Deepak Gaur
- Laboratory of Malaria and Vaccine Research, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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Proteomics reveals the gender differences in humoral immunity and physiological characteristics associated with reproduction in the sea cucumber Apostichopus japonicus. J Proteomics 2020; 217:103687. [DOI: 10.1016/j.jprot.2020.103687] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/10/2020] [Accepted: 02/12/2020] [Indexed: 12/11/2022]
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Zambelli V, Rizzi L, Delvecchio P, Bresciani E, Molteni L, Meanti R, Pascal V, Fehrentz JA, Omeljaniuk RJ, Bellani G, Torsello A. JMV5656, a short synthetic derivative of TLQP-21, alleviates acid-induced lung injury and fibrosis in mice. Pulm Pharmacol Ther 2020; 62:101916. [PMID: 32205280 DOI: 10.1016/j.pupt.2020.101916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 10/24/2022]
Abstract
TLQP-21, a peptide encoded by the prohormone VGF, is expressed in neuroendocrine cells and can modulate inflammatory processes. Since TLQP-21 can bind the complement 3a receptor 1 on macrophages, interest has risen in this peptide as a potential drug for the treatment of Acute Respiratory Distress Syndrome (ARDS), whose hospital mortality can reach 35-46%. Since no effective pharmacologic therapies are available, our aim was to exploit the potential of a short analog of TLQP-21(JMV5656) in order to modulate the inflammatory process in ARDS and the progression to pulmonary fibrosis in an experimental model of unilateral acid aspiration in mice. Mice were divided in 2 treatment groups. In the acute protocol, mice received intra-peritoneal injection of either vehicle or 0.6 mg/kg JMV5656 on experimental days 1 and 2, and ARDS was induced on day 3 under deep anesthesia by instillation of HCl (1.5 ml/kg of 0.1 M HCl in 0.9% NaCl) into the right lung; all measurements were performed 24 h later. In the subacute protocol, mice were treated as previously, but treatment with vehicle or JMV5656 was repeated also on day 4 and measurements were made 2 weeks later. Twenty-four hours after acid instillation, the total number of immune cell in the BAL rose sharply due primarily to an increase in the PMN population which increased from 1% up to 58% of total cell numbers. JMV5656 significantly reduced PMN recruitment into the alveolar space, but had no effects on cytokine levels in BAL. Two weeks after acid injury, static compliance of the right lung was significantly higher in the JMV5656-treated group compared to vehicle-treated group. Treatment with JMV5656 also blunted the acid-induced collagen deposition in the right lung. These results suggest that JMV5656 can ameliorate mechanical compliance, and reduce collagen deposition in acid-injured lungs in mice. This effect was likely due to the ability of JMV5656 to inhibit PMN recruitment in the injured lung.
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Affiliation(s)
- Vanessa Zambelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Laura Rizzi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.
| | - Paolo Delvecchio
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Elena Bresciani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Laura Molteni
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Ramona Meanti
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Verdiè Pascal
- Max Mousseron Institute of Biomolecules UMR5247, CNRS, University of Montpellier, ENSCM, Montpellier, France
| | - Jean-Alain Fehrentz
- Max Mousseron Institute of Biomolecules UMR5247, CNRS, University of Montpellier, ENSCM, Montpellier, France
| | | | - Giacomo Bellani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Antonio Torsello
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
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Kerboua KE, Djenouhat K. Complementology's foundation: The 100-year anniversary of the Nobel Prize to Jules Bordet. J Immunoassay Immunochem 2020; 41:106-116. [PMID: 31747841 DOI: 10.1080/15321819.2019.1689999] [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] [Indexed: 01/11/2023]
Abstract
The discovery of the complement system was associated with the creation of medical serodiagnosis in the early 20th century. Its biotechnological applications, usable even a century after its development by Jules Bordet, preceded for decades the proof of its biochemical rather than biophysical nature. Complement science has begun to emerge, thanks to the labs of Michael Heidelberger and his student Manfred Martin Mayer. Complementology had known difficult moments like the suicide of Louis Pillemer by swallowing the reagents of his laboratory following the criticisms of his discovery by Robert A. Nelson, Jr., in March 1957, at the Walter Reed Army Institute. This alternative complement pathway continues to revolutionize medicine by its implications as the principal component of immunosurveillance and as an amplification loop for plasma proteolytic cascades. Moreover, the drug designed in pathologies related to this pathway, eculizumab, was the most expensive drug in the world at the beginning of its marketing. Complementology promises great hopes in inflammatory and degenerative diseases, regenerative medicine, transplantation, and vector nanotechnology and as a diagnostic tool primarily in transplantation and inflammatory imaging. The moral and historical responsibility requires to make known this legacy to the new generation of doctors and scientists and also the technicians of the clinical laboratory of complementology throughout the world.
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Affiliation(s)
- Kheir Eddine Kerboua
- Laboratory of Immunology, Faculty of Medicine, University of Kasdi Merbah Ouargla, ouargla, Algeria
| | - Kamal Djenouhat
- Laboratory of Immunology, Faculty of Medicine, University of Youcef Benkhadda Algiers, Algiers, Algeria
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d'Avanzo N, Celia C, Barone A, Carafa M, Di Marzio L, Santos HA, Fresta M. Immunogenicity of Polyethylene Glycol Based Nanomedicines: Mechanisms, Clinical Implications and Systematic Approach. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.201900170] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Nicola d'Avanzo
- Department of Health SciencesUniversity of Catanzaro “Magna Græcia” Campus Universitario “S. Venuta”, Viale Europa I‐88100 Catanzaro Italy
| | - Christian Celia
- Department of PharmacyUniversity of Chieti‐Pescara “G. d'Annunzio” Via dei Vestini 31 I‐66100 Chieti Italy
| | - Antonella Barone
- Department of Health SciencesUniversity of Catanzaro “Magna Græcia” Campus Universitario “S. Venuta”, Viale Europa I‐88100 Catanzaro Italy
| | - Maria Carafa
- Department of Drug Chemistry and TechnologyUniversity of Rome “Sapienza” 00185 Rome Italy
| | - Luisa Di Marzio
- Department of PharmacyUniversity of Chieti‐Pescara “G. d'Annunzio” Via dei Vestini 31 I‐66100 Chieti Italy
| | - Hélder A. Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy; and Helsinki Institute of Life Science (HiLIFE)University of Helsinki FI‐00014 Helsinki Finland
| | - Massimo Fresta
- Department of Health SciencesUniversity of Catanzaro “Magna Græcia” Campus Universitario “S. Venuta”, Viale Europa I‐88100 Catanzaro Italy
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Sun T, Guo X, Zhong R, Wang C, Liu H, Li H, Ma L, Guan J, You C, Tian M. Interactions of Alginate-Deferoxamine Conjugates With Blood Components and Their Antioxidation in the Hemoglobin Oxidation Model. Front Bioeng Biotechnol 2020; 8:53. [PMID: 32117933 PMCID: PMC7026261 DOI: 10.3389/fbioe.2020.00053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 01/22/2020] [Indexed: 02/05/2023] Open
Abstract
While deferoxamine (DFO) has long been used as an FDA-approved iron chelator, its proangiogenesis ability attracts increasing number of research interests. To address its drawbacks such as short plasma half-life and toxicity, polymeric conjugated strategy has been proposed and shown superiority. Owing to intravenous injection and application in blood-related conditions, however, the blood interactions and antioxidation of the DFO-conjugates and the mechanisms underlying these outcomes remain to be elucidated. In this regard, incubating with three different molecular-weight (MW) alginate-DFO conjugates (ADs) red blood cells (RBCs), coagulation system, complement and platelet were investigated. To prove the antioxidant activity of ADs, we used hemoglobin oxidation model in vitro. ADs did not cause RBCs hemolysis while reversible aggregation and normal deformability ability were observed. However, the coagulation time, particularly APTT and TT, were significantly prolonged in a dose-dependent manner, and fibrinogen was dramatically decreased, suggesting ADs could dominantly inhibit the intrinsic pathways in the process of coagulation. The dose-dependent anticoagulation might be related with the functional groups along the alginate chains. The complements, C3a and C5a, were activated by ADs in a dose-dependent manner through alternative pathway. For platelet, ADs slightly suppressed the activation and aggregation at low concentration. Based on above results, the cross-talking among coagulation, complement and platelet induced by ADs was proposed. The antioxidation of ADs through iron chelation was proved and the antioxidant activity was shown in a MW-dependent manner.
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Affiliation(s)
- Tong Sun
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Xi Guo
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Zhong
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, China
| | - Chengwei Wang
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Liu
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Li
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Lu Ma
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Junwen Guan
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Chao You
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
- West China Brain Research Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Meng Tian
- Neurosurgery Research Laboratory, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
- West China Brain Research Centre, West China Hospital, Sichuan University, Chengdu, China
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122
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Mulindwa J, Matovu E, Enyaru J, Clayton C. Blood signatures for second stage human African trypanosomiasis: a transcriptomic approach. BMC Med Genomics 2020; 13:14. [PMID: 32000760 PMCID: PMC6993467 DOI: 10.1186/s12920-020-0666-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/20/2020] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Rhodesiense sleeping sickness is caused by infection with T. b rhodesiense parasites resulting in an acute disease that is fatal if not treated in time. The aim of this study was to understand the global impact of active T. b rhodesiense infection on the patient's immune response in the early and late stages of the disease. METHODS RNASeq was carried out on blood and cerebral spinal fluid (CSF) samples obtained from T. b. rhodesiense infected patients. The control samples used were from healthy individuals in the same foci. The Illumina sequenced reads were analysed using the Tuxedo suite pipeline (Tophat, Cufflinks, Cuffmerge, Cuffdiff) and differential expression analysis carried out using the R package DESeq2. The gene enrichment and function annotation analysis were done using the ToppCluster, DAVID and InnateDB algorithms. RESULTS We previously described the transcriptomes of T. b rhodesiense from infected early stage blood (n = 3) and late stage CSF (n = 3) samples from Eastern Uganda. We here identify human transcripts that were differentially expressed (padj < 0.05) in the early stage blood versus healthy controls (n = 3) and early stage blood versus late stage CSF. Differential expression in infected blood showed an enrichment of innate immune response genes whereas that of the CSF showed enrichment for anti-inflammatory and neuro-degeneration signalling pathways. We also identified genes (C1QC, MARCO, IGHD3-10) that were up-regulated (log2 FC > 2.5) in both the blood and CSF. CONCLUSION The data yields insights into the host's response to T. b rhodesiense parasites in the blood and central nervous system. We identified key pathways and signalling molecules for the predominant innate immune response in the early stage infection; and anti-inflammatory and neuro-degeneration pathways associated with sleep disorders in second stage infection. We further identified potential blood biomarkers that can be used for diagnosis of late stage disease without the need for lumbar puncture.
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Affiliation(s)
- Julius Mulindwa
- Department of Biochemistry and Sports Sciences, College of Natural Sciences, Makerere University, P. O. Box 7062, Kampala, Uganda.
| | - Enock Matovu
- Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - John Enyaru
- Department of Biochemistry and Sports Sciences, College of Natural Sciences, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Christine Clayton
- Centre for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
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123
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Comer AL, Jinadasa T, Sriram B, Phadke RA, Kretsge LN, Nguyen TPH, Antognetti G, Gilbert JP, Lee J, Newmark ER, Hausmann FS, Rosenthal S, Liu Kot K, Liu Y, Yen WW, Dejanovic B, Cruz-Martín A. Increased expression of schizophrenia-associated gene C4 leads to hypoconnectivity of prefrontal cortex and reduced social interaction. PLoS Biol 2020; 18:e3000604. [PMID: 31935214 PMCID: PMC6959572 DOI: 10.1371/journal.pbio.3000604] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 12/19/2019] [Indexed: 01/10/2023] Open
Abstract
Schizophrenia is a severe mental disorder with an unclear pathophysiology. Increased expression of the immune gene C4 has been linked to a greater risk of developing schizophrenia; however, it is not known whether C4 plays a causative role in this brain disorder. Using confocal imaging and whole-cell electrophysiology, we demonstrate that overexpression of C4 in mouse prefrontal cortex neurons leads to perturbations in dendritic spine development and hypoconnectivity, which mirror neuropathologies found in schizophrenia patients. We find evidence that microglia-mediated synaptic engulfment is enhanced with increased expression of C4. We also show that C4-dependent circuit dysfunction in the frontal cortex leads to decreased social interactions in juvenile and adult mice. These results demonstrate that increased expression of the schizophrenia-associated gene C4 causes aberrant circuit wiring in the developing prefrontal cortex and leads to deficits in juvenile and adult social behavior, suggesting that altered C4 expression contributes directly to schizophrenia pathogenesis. Elevated expression of the gene encoding complement C4 is associated with an enhanced risk of schizophrenia, but the mechanism underlying this link is unclear. This study shows that overexpression of the C4 gene in mice leads to mis-wiring of the prefrontal cortex and deficits in social interactions.
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Affiliation(s)
- Ashley L. Comer
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- The Graduate Program for Neuroscience, Boston University, Boston, Massachusetts, United States of America
- Neurophotonics Center, Boston University, Boston, Massachusetts, United States of America
| | - Tushare Jinadasa
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- Neurophotonics Center, Boston University, Boston, Massachusetts, United States of America
| | - Balaji Sriram
- Research and Early Development, Biogen, Cambridge, Massachusetts, United States of America
| | - Rhushikesh A. Phadke
- Molecular Biology, Cell Biology and Biochemistry Program, Boston University, Boston, Massachusetts, United States of America
| | - Lisa N. Kretsge
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- The Graduate Program for Neuroscience, Boston University, Boston, Massachusetts, United States of America
- Neurophotonics Center, Boston University, Boston, Massachusetts, United States of America
| | - Thanh P. H. Nguyen
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Giovanna Antognetti
- Biologics Drug Discovery, Biogen, Cambridge, Massachusetts, United States of America
| | - James P. Gilbert
- External Innovations and New Indications, Biogen, Cambridge, Massachusetts, United States of America
| | - Jungjoon Lee
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
| | - Elena R. Newmark
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
| | - Frances S. Hausmann
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
| | - SaraAnn Rosenthal
- Department of Biology, Connecticut College, New London, Connecticut, United States of America
| | - Kevin Liu Kot
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
| | - Yenyu Liu
- Biochemistry and Molecular Biology/Biotechnology Program, Boston University, Boston, Massachusetts, United States of America
| | - William W. Yen
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Borislav Dejanovic
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Alberto Cruz-Martín
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- The Graduate Program for Neuroscience, Boston University, Boston, Massachusetts, United States of America
- Neurophotonics Center, Boston University, Boston, Massachusetts, United States of America
- Molecular Biology, Cell Biology and Biochemistry Program, Boston University, Boston, Massachusetts, United States of America
- Department Pharmacology and Experimental Therapeutics, Boston University, Boston, Massachusetts, United States of America
- Center for Systems Neuroscience, Boston University, Boston, Massachusetts, United States of America
- * E-mail:
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Rajasekaran S, Tangavel C, K S SVA, Soundararajan DCR, Nayagam SM, Matchado MS, Raveendran M, Shetty AP, Kanna RM, Dharmalingam K. Inflammaging determines health and disease in lumbar discs-evidence from differing proteomic signatures of healthy, aging, and degenerating discs. Spine J 2020; 20:48-59. [PMID: 31125691 DOI: 10.1016/j.spinee.2019.04.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT The true understanding of aging and disc degeneration (DD) is still elusive. MRI has not helped our attempts to understand the health and disease status of the discs as it reflects mainly the end morphologic changes and not the changes at a molecular level. Understanding degeneration at a molecular level through proteomics might allow differentiation from normal aging and also aid in the development of biomarkers for early diagnosis and preventive therapies. PURPOSE To utilize proteomics to understand the molecular basis of healthy, aging, and degenerating discs and conclusively differentiate normal aging and degeneration. STUDY DESIGN Proteomic analysis of human intervertebral disc samples. METHODS L4-L5 disc samples from three groups were acquired and subjected to proteomic analysis. Samples from individuals aged in the second, third, and fourth decades were used to represent young healthy discs (Group A). Those from MRI normal donors aged in the fifth, sixth, and seventh decades represented normal aging (Group B). Five degenerated discs obtained from patients at surgery represented degeneration (Group C). The entire proteome map and alteration in protein expressions were further analyzed using bioinformatics analysis. This was a self-funded project. RESULTS There were 84 common proteins. Specific proteins numbered 225 in A, 315 in B, and 283 in C. By gene ontology biological process identification, Group A predominated with extracellular matrix organization, cytoskeletal structural and normal metabolic proteins. Group B differed in having additional basal expression of immune response, complement inhibitors, and senescence proteins. Group C was different, with upregulation of proteins associated with oxidative stress response, positive regulators of apoptosis, innate immune response, complement activation and defense response to gram positive bacteria indicating ongoing inflammaging. CONCLUSIONS Our study documented diverse proteome signatures between the young, aging and degenerating discs. Inflammaging was the main differentiator between normal biological aging and DD. CLINICAL SIGNIFICANCE Multiple inflammatory molecules unique to DD were identified, allowing the possibility of developing specific biomarkers for early diagnosis and thereby provide evidence-based metrics for preventive measures rather than surgical intervention and also to monitor progress of the disease.
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Affiliation(s)
- S Rajasekaran
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India.
| | - Chitraa Tangavel
- Ganga Research Centre, No 91, Mettupalayam Rd, Coimbatore 641030, India
| | - Sri Vijay Anand K S
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | | | | | | | - M Raveendran
- Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore 641003, India
| | - Ajoy Prasad Shetty
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | - Rishi Mugesh Kanna
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | - K Dharmalingam
- Aravind Medical Research Foundation, Madurai 625020, India
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125
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Age-related macular degeneration: A two-level model hypothesis. Prog Retin Eye Res 2019; 76:100825. [PMID: 31899290 DOI: 10.1016/j.preteyeres.2019.100825] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 12/19/2019] [Accepted: 12/26/2019] [Indexed: 02/08/2023]
Abstract
Age-related diseases, including age-related macular degeneration (AMD), are of growing importance in a world where population ageing has become a dominant global trend. Although a wide variety of risk factors for AMD have been identified, age itself remains by far the most important risk factor, making it an urgent priority to understand the connections between underlying ageing mechanisms and pathophysiology of AMD. Ageing is both multicausal and variable, so that differences between individuals in biological ageing processes are the focus of a growing number of pathophysiological studies seeking to explain how ageing contributes to chronic, age-related conditions. The aim of this review is to integrate the available knowledge on the pathophysiology of AMD within the framework of the biology of ageing. One highly significant feature of biological ageing is systemic inflammation, which arises as a second-level response to a first level of molecular damage involving oxidative stress, mutations etc. Combining these insights, the various co-existing pathophysiological explanations in AMD arrange themselves according to a two-level hypothesis. Accordingly, we describe how AMD can be considered the consequence of age-related random accumulation of molecular damage at the ocular level and the subsequent systemic inflammatory host response thereof. We summarize evidence and provide original data to enlighten where evidence is lacking. Finally, we discuss how this two-level hypothesis provides a foundation for thoughts and future studies in prevention, prognosis, and intervention.
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126
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Coulthard LG, Woodruff TM. Commentary: Beyond C4: Analysis of the complement gene pathway shows enrichment for IQ in patients with psychotic disorders and healthy controls. Front Immunol 2019; 10:2853. [PMID: 31867012 PMCID: PMC6904300 DOI: 10.3389/fimmu.2019.02853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/20/2019] [Indexed: 11/26/2022] Open
Affiliation(s)
- Liam G. Coulthard
- Kenneth G Jamieson Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
- Faculty of Medicine, The University of Queensland, St Lucia, QLD, Australia
- *Correspondence: Liam G. Coulthard
| | - Trent M. Woodruff
- Faculty of Medicine, The University of Queensland, St Lucia, QLD, Australia
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127
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Tong S, Moyo B, Lee CM, Leong K, Bao G. Engineered materials for in vivo delivery of genome-editing machinery. NATURE REVIEWS. MATERIALS 2019; 4:726-737. [PMID: 34094589 PMCID: PMC8174554 DOI: 10.1038/s41578-019-0145-9] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/03/2019] [Indexed: 05/22/2023]
Abstract
Genome editing technologies, such as CRISPR/Cas9, are promising for treating otherwise incurable genetic diseases. Great progress has been made for ex vivo genome editing; however, major bottlenecks exist in the development of efficient, safe, and targetable in vivo delivery systems, which are needed for the treatment of many diseases. To achieve high efficacy and safety in therapeutic in vivo genome editing, editing activities must be controlled spatially and temporally in the body, which requires novel materials, delivery strategies, and control mechanisms. Thus, there is currently a tremendous opportunity for the biomaterials research community to develop in vivo delivery systems that overcome the problems of low editing efficiency, off-targeting effect, safety, and cell and tissue specificity. In this Review, we summarize delivery approaches and provide perspectives on the challenges and possible solutions, aiming to stimulate further development of engineered materials for in vivo delivery of genome-editing machinery.
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Affiliation(s)
- Sheng Tong
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Buhle Moyo
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Ciaran M. Lee
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Kam Leong
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Gang Bao
- Department of Bioengineering, Rice University, Houston, TX, USA
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128
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Torres FG, Troncoso OP, Pisani A, Gatto F, Bardi G. Natural Polysaccharide Nanomaterials: An Overview of Their Immunological Properties. Int J Mol Sci 2019; 20:E5092. [PMID: 31615111 PMCID: PMC6834193 DOI: 10.3390/ijms20205092] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/08/2019] [Accepted: 10/12/2019] [Indexed: 12/20/2022] Open
Abstract
Natural occurring polymers, or biopolymers, represent a huge part of our planet biomass. They are formed by long chains of monomers of the same type or a combination of different ones. Polysaccharides are biopolymers characterized by complex secondary structures performing several roles in plants, animals, and microorganisms. Because of their versatility and biodegradability, some of them are extensively used for packaging, food, pharmaceutical, and biomedical industries as sustainable and renewable materials. In the recent years, their manipulation at the nanometric scale enormously increased the range of potential applications, boosting an interdisciplinary research attempt to exploit all the potential advantages of nanostructured polysaccharides. Biomedical investigation mainly focused on nano-objects aimed at drug delivery, tissue repair, and vaccine adjuvants. The achievement of all these applications requires the deep knowledge of polysaccharide nanomaterials' interactions with the immune system, which orchestrates the biological response to any foreign substance entering the body. In the present manuscript we focused on natural polysaccharides of high commercial importance, namely, starch, cellulose, chitin, and its deacetylated form chitosan, as well as the seaweed-derived carrageenan and alginate. We reviewed the available information on their biocompatibility, highlighting the importance of their physicochemical feature at the nanoscale for the modulation of the immune system.
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Affiliation(s)
- Fernando G Torres
- Department of Mechanical Engineering, Pontificia Universidad Catolica del Peru, Av. Universitaria 1801, Lima 32, Peru.
| | - Omar P Troncoso
- Department of Mechanical Engineering, Pontificia Universidad Catolica del Peru, Av. Universitaria 1801, Lima 32, Peru.
| | - Anissa Pisani
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
- Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso 31,16146 Genova, Italy.
| | - Francesca Gatto
- Drug Discovery and Development Department, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Giuseppe Bardi
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
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Fischinger S, Fallon JK, Michell AR, Broge T, Suscovich TJ, Streeck H, Alter G. A high-throughput, bead-based, antigen-specific assay to assess the ability of antibodies to induce complement activation. J Immunol Methods 2019; 473:112630. [PMID: 31301278 PMCID: PMC6722412 DOI: 10.1016/j.jim.2019.07.002] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 05/21/2019] [Accepted: 07/08/2019] [Indexed: 12/14/2022]
Abstract
The complement system plays a critical role in innate immune defense against pathogens, both via non-specific direct pathogen recognition and killing or via antigen-specific indirect recruitment by complement fixing antibodies. While various assays for measuring complement activation have been developed, few provide a high-throughput, sample-sparing approach to interrogate the qualitative differences in the ability of antibodies to drive complement activation. Here we present a high-throughput, sample-sparing, bead-based assay to evaluate antigen-specific antibody-dependent complement activation against nearly any antigen. Optimization of buffer composition, kinetics of immune complex formation, as well as complement source all contribute critically to the development of a robust, highly flexible and high-throughput approach to analyze antibody-dependent complement deposition (ADCD). Thus, the optimized bead-based, antigen-specific assay represents a simple, highly adaptable platform to profile antibody-dependent complement activation across pathogens and diseases.
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Affiliation(s)
- Stephanie Fischinger
- Ragon Institute of MGH, Harvard and MIT, Cambridge 02139, USA; University of Duisburg-Essen, Essen 47057, Germany
| | | | | | - Thomas Broge
- Ragon Institute of MGH, Harvard and MIT, Cambridge 02139, USA
| | | | | | - Galit Alter
- Ragon Institute of MGH, Harvard and MIT, Cambridge 02139, USA.
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130
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Saleh J, Al-Maqbali M, Abdel-Hadi D. Role of Complement and Complement-Related Adipokines in Regulation of Energy Metabolism and Fat Storage. Compr Physiol 2019; 9:1411-1429. [PMID: 31688967 DOI: 10.1002/cphy.c170037] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Adipose tissue releases many cytokines and inflammatory factors described as adipokines. In obesity, adipokines released from expanding adipose tissue are implicated in disease progression and metabolic dysfunction. However, mechanisms controlling the progression of adiposity and metabolic complications are not fully understood. It has been suggested that expanding fat mass and sustained release of inflammatory adipokines in adipose tissue lead to hypoxia, oxidative stress, apoptosis, and cellular damage. These changes trigger an immune response involving infiltration of adipose tissue with immune cells, complement activation and generation of factors involved in opsonization and clearance of damaged cells. Abundant evidence now indicates that adipose tissue is an active secretory source of complement and complement-related adipokines that, in addition to their inflammatory role, contribute to the regulation of metabolic function. This article highlights advances in knowledge regarding the role of these adipokines in energy regulation of adipose tissue through modulating lipogenic and lipolytic pathways. Several adipokines will be discussed including adipsin, Factor H, properdin, C3a, Acylation-Stimulating Protein, C1q/TNF-related proteins, and response gene to complement-32 (RGC-32). Interactions between these factors will be described considering their immune-metabolic roles in the adipose tissue microenvironment and their potential contribution to progression of adiposity and metabolic dysfunction. The differential expression and the role of complement factors in gender-related fat partitioning will also be addressed. Identifying lipogenic adipokines and their specific autocrine/paracrine roles may provide means for adipose-tissue-targeted therapeutic interventions that may disrupt the vicious circle of adiposity and disease progression. © 2019 American Physiological Society. Compr Physiol 9:1411-1429, 2019.
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Affiliation(s)
- Jumana Saleh
- Biochemistry Department, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Muna Al-Maqbali
- Biochemistry Department, College of Medicine, Sultan Qaboos University, Muscat, Oman
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131
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Bahbahani H, Musa HH, Wragg D, Shuiep ES, Almathen F, Hanotte O. Genome Diversity and Signatures of Selection for Production and Performance Traits in Dromedary Camels. Front Genet 2019; 10:893. [PMID: 31608121 PMCID: PMC6761857 DOI: 10.3389/fgene.2019.00893] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 08/23/2019] [Indexed: 12/20/2022] Open
Abstract
Dromedary camels (Camelus dromedarius) are single-humped animals found throughout the deserts of Africa, the Arabian Peninsula, and the southwest of Asia. This well-adapted species is mainly used for milk and meat production, although some specific types exhibit superior running performance and are used in racing competitions. However, neither performance nor production camels are bred under intensive genomic selection programs with specific aims to improve these traits. In this study, the full genome sequence data of six camels from the Arabian Peninsula and the genotyping-by-sequencing data of 44 camels (29 packing and 15 racing) from Sudan were analyzed to assess their genome diversities, relationships, and candidate signatures of positive selection. Genome ADMIXTURE and principle component analyses indicate clear geographic separation between the Sudanese and the Arabian Peninsula camels, but with no population-specific genetic distinction within populations. Camel samples from the Arabian Peninsula show higher mean heterozygosity (0.560 ± 0.003) than those from Sudan (0.347 ± 0.003). Analyses of signatures of selection, using pooled heterozygosity (Hp) approach, in the Sudanese camels revealed 176, 189, and 308 candidate regions under positive selection in the combined and packing and racing camel populations, respectively. These regions host genes that might be associated with adaptation to arid environment, dairy traits, energy homeostasis, and chondrogenesis. Eight regions show high genetic differentiation, based on Fst analysis, between the Sudanese packing and racing camel types. Genes associated with chondrogenesis, energy balance, and urinary system development were found within these regions. Our results advocate for further detailed investigation of the genome of the dromedary camel to identify and characterize genes and variants associated with their valuable phenotypic traits. The results of which may support the development of breeding programs to improve the production and performance traits of this unique domesticated species.
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Affiliation(s)
- Hussain Bahbahani
- Department of Biological Sciences, Faculty of Science, Kuwait University, Kuwait City, Kuwait
| | - Hassan H Musa
- Department of Medical Microbiology, Faculty of Medical Laboratory Sciences, University of Khartoum, Khartoum North, Sudan
| | - David Wragg
- Centre for Tropical Livestock Genetics and Health, The Roslin Institute, Edinburgh, United Kingdom
| | - Eltahir S Shuiep
- Department of Animal Production, Faculty of Agricultural and Environmental Sciences, University of Gadarif, Gadarif State, Sudan
| | - Faisal Almathen
- Department of Public Health, College of Veterinary Medicine, King Faisal University, Al-Hasa, Saudi Arabia
| | - Olivier Hanotte
- LiveGene, International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia
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132
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Tsai T, Reinehr S, Maliha AM, Joachim SC. Immune Mediated Degeneration and Possible Protection in Glaucoma. Front Neurosci 2019; 13:931. [PMID: 31543759 PMCID: PMC6733056 DOI: 10.3389/fnins.2019.00931] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/19/2019] [Indexed: 12/13/2022] Open
Abstract
The underlying pathomechanisms for glaucoma, one of the most common causes of blindness worldwide, are still not identified. In addition to increased intraocular pressure (IOP), oxidative stress, excitotoxicity, and immunological processes seem to play a role. Several pharmacological or molecular/genetic methods are currently investigated as treatment options for this disease. Altered autoantibody levels were detected in serum, aqueous humor, and tissue sections of glaucoma patients. To further analyze the role of the immune system, an IOP-independent, experimental autoimmune glaucoma (EAG) animal model was developed. In this model, immunization with ocular antigens leads to antibody depositions, misdirected T-cells, retinal ganglion cell death and degeneration of the optic nerve, similar to glaucomatous degeneration in patients. Moreover, an activation of the complement system and microglia alterations were identified in the EAG as well as in ocular hypertension models. The inhibition of these factors can alleviate degeneration in glaucoma models with and without high IOP. Currently, several neuroprotective approaches are tested in distinct models. It is necessary to have systems that cover underlying pathomechanisms, but also allow for the screening of new drugs. In vitro models are commonly used, including single cell lines, mixed-cultures, and even organoids. In ex vivo organ cultures, pathomechanisms as well as therapeutics can be investigated in the whole retina. Furthermore, animal models reveal insights in the in vivo situation. With all these models, several possible new drugs and therapy strategies were tested in the last years. For example, hypothermia treatment, neurotrophic factors or the blockage of excitotoxity. However, further studies are required to reveal the pressure independent pathomechanisms behind glaucoma. There is still an open issue whether immune mechanisms directly or indirectly trigger cell death pathways. Hence, it might be an imbalance between protective and destructive immune mechanisms. Moreover, identified therapy options have to be evaluated in more detail, since deeper insights could lead to better treatment options for glaucoma patients.
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Affiliation(s)
| | | | | | - Stephanie C. Joachim
- Experimental Eye Research, University Eye Hospital, Ruhr-University Bochum, Bochum, Germany
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133
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Araújo-Gomes N, Romero-Gavilán F, Zhang Y, Martinez-Ramos C, Elortza F, Azkargorta M, Martín de Llano J, Gurruchaga M, Goñi I, van den Beucken J, Suay J. Complement proteins regulating macrophage polarisation on biomaterials. Colloids Surf B Biointerfaces 2019; 181:125-133. [DOI: 10.1016/j.colsurfb.2019.05.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/06/2019] [Accepted: 05/16/2019] [Indexed: 01/06/2023]
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134
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Kobylarek D, Iwanowski P, Lewandowska Z, Limphaibool N, Szafranek S, Labrzycka A, Kozubski W. Advances in the Potential Biomarkers of Epilepsy. Front Neurol 2019; 10:685. [PMID: 31312171 PMCID: PMC6614180 DOI: 10.3389/fneur.2019.00685] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 06/12/2019] [Indexed: 12/11/2022] Open
Abstract
Epilepsy is a group of chronic neurological disorders characterized by recurrent, spontaneous, and unpredictable seizures. It is one of the most common neurological disorders, affecting tens of millions of people worldwide. Comprehensive studies on epilepsy in recent decades have revealed the complexity of epileptogenesis, in which immunological processes, epigenetic modifications, and structural changes in neuronal tissues have been identified as playing a crucial role. This review discusses the recent advances in the biomarkers of epilepsy. We evaluate the possible molecular background underlying the clinical changes observed in recent studies, focusing on therapeutic investigations, and the evidence of their safety and efficacy in the human population. This article reviews the pathophysiology of epilepsy, including recent reports on the effects of oxidative stress and hypoxia, and focuses on specific biomarkers and their clinical implications, along with further perspectives in epilepsy research.
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Affiliation(s)
- Dominik Kobylarek
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
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135
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Jiang J, Zhao Z, Pan Y, Dong Y, Gao S, Li S, Wang C, Yang H, Lin S, Zhou Z. Gender specific differences of immune competence in the sea cucumber Apostichopus japonicus before and after spawning. FISH & SHELLFISH IMMUNOLOGY 2019; 90:73-79. [PMID: 31022452 DOI: 10.1016/j.fsi.2019.04.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/14/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
The gender differences of immunity have been elucidated in many vertebrates and invertebrates. However, the information of this difference was still not clear in the sea cucumber Apostichopus japonicus, which is one of the most valuable aquaculture species and susceptible to diseases caused by pathogen infection. In the present study, the transcriptome of coelomocytes from female and male A. japonicus before and after spawning was obtained by RNA-sequencing technology. A total of 4,538 and 8,248 differentially expressed genes were identified between female and male A. japonicus before and after spawning, respectively, indicating that the gender differences of gene expression profiles in A. japonicus were more remarkable after spawning. Further KEGG enrichment analyses were conducted for both male and female up-regulated genes before and after spawning. The results revealed that the capacity to kill pathogens in female A. japonicus might be more powerful than that in males no matter before and after spawning; the antioxidant ability in male A. japonicus was probably stronger than that in females after spawning; the complement system in male A. japonicus might be more effective than that in females after spawning; and the apoptosis was likely to be more serious in male A. japonicus before spawning. Moreover, we speculated that the fatty acid composition might be one of the inducements for gender specific immune differences of A. japonicus. Overall, the results of our study illustrated the global gender specific immune differences of A. japonicus and contributed to understanding of the molecular mechanisms underlying sea cucumber immune regulation.
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Affiliation(s)
- Jingwei Jiang
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Zelong Zhao
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Yongjia Pan
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Ying Dong
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Shan Gao
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Shilei Li
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Chao Wang
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Huihua Yang
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Shanshan Lin
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China
| | - Zunchun Zhou
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, 116023, PR China.
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Hernández-Castellano LE, Moreno-Indias I, Sánchez-Macías D, Morales-delaNuez A, Torres A, Argüello A, Castro N. Sheep and goats raised in mixed flocks have diverse immune status around parturition. J Dairy Sci 2019; 102:8478-8485. [PMID: 31255264 DOI: 10.3168/jds.2019-16731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/06/2019] [Indexed: 01/07/2023]
Abstract
Several physiological and metabolic changes take place in dairy ruminants around parturition (late pregnancy, parturition, and early lactation). Dairy species are genetically selected for their higher milk production compared with non-dairy species. This fact causes a constant stress that impairs the immune status of the animal, with consequences for its welfare and performance. In the present study, we assessed the immune status of high-yield dairy sheep and goats by quantifying IgG and IgM concentrations, as well as chitotriosidase (ChT) and complement system [total complement system (TC) and alternative complement pathway (AC)] activity in blood plasma around parturition. We also measured IgG and IgM concentrations and ChT activity in colostrum and milk during the first 40 d postpartum. The lowest blood IgG concentration was at parturition in both species. We detected no differences in blood IgG concentrations between species. Blood IgM concentrations were constant in both species throughout the study period. However, blood IgM concentrations were greater in sheep than in goats. Blood ChT activity was greater in goats than in sheep, and both species showed constant activity of this enzyme throughout the study period. We observed no differences in complement system (TC and AC) activity between sheep and goats. In addition, both TC and AC activity were constant in both species throughout the experiment. In general, IgG and IgM concentrations were greater in sheep colostrum than in goat colostrum, but these differences disappeared after d 4 (IgG) and d 3 (IgM) postpartum. In both species, the highest IgG and IgM concentrations were measured in colostrum, gradually decreasing during the first days postpartum. Chitotriosidase activity decreased in both species from colostrum to milk, although goats always showed greater ChT activity than sheep. Both sheep and goats seemed to be more susceptible to infectious diseases around parturition. As well, goats showed greater ChT activity in blood, colostrum, and milk than sheep. This fact may give these animals additional protection against parasite and fungal infections.
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Affiliation(s)
| | - Isabel Moreno-Indias
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Laboratorio del Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario de Málaga (Virgen de la Victoria), Universidad de Málaga, 29010 Málaga, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBERObn), 28029 Madrid, Spain
| | - Davinia Sánchez-Macías
- Animal Production and Industrialization Unit, Department of Agroindustrial Engineering, Universidad Nacional de Chimborazo, 060150 Riobamba, Ecuador
| | - Antonio Morales-delaNuez
- Agrobiotechnology Group, Instituto de Productos Naturales y Agrobiología, IPNA, CSIC Spanish Research Council, 38206 La Laguna, Tenerife, Spain
| | - Alexandr Torres
- Instituto Canario de Investigaciones Agrarias, 38200 La Laguna, Tenerife, Spain
| | - Anastasio Argüello
- Animal Production and Biotechnology Group, Institute of Animal Health and Food Safety, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, Gran Canaria, Spain
| | - Noemí Castro
- Animal Production and Biotechnology Group, Institute of Animal Health and Food Safety, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, Gran Canaria, Spain
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Gorbushin AM. Derivatives of the lectin complement pathway in Lophotrochozoa. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 94:35-58. [PMID: 30682446 DOI: 10.1016/j.dci.2019.01.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/20/2019] [Accepted: 01/21/2019] [Indexed: 05/16/2023]
Abstract
A plethora of non-overlapping immune molecular mechanisms in metazoans is the most puzzling issue in comparative immunobiology. No valid evolutionary retrospective on these mechanisms has been developed. In this study, we aimed to reveal the origin and evolution of the immune complement-like system in Lophotrochozoa. For this, we analyzed publicly available transcriptomes of prebilaterian and lophotrochozoan species, mapping lineage-specific molecular events on the phylogenetic tree. We found that there were no orthologs of mannose-binding lectin (MBL) and ficolins (FCN) in Lophotrochozoa but C1q-like proteins (C1qL), bearing both a collagen domain and a globular C1q domain, were omnipresent in them. This suggests that among all complement-like activators the C1qL-specific domain architecture was an evolutionarily first. Two novel protostomian MASP-Related Molecules, MReM1 and MReM2, might hypothetically compensate for the loss of a prebilaterian MASP-orthologous gene and act in complex with C1qL and C1qDC as a "proto-activator" of an ancient "proto-complement". We proposed a new model of the complement evolution predicting that numerous lineage-specific complement-like systems should have evolved from a stem "antique" molecular complex. First evolved in the common ancestor of coelomic animals, the "antique" humoral complex consisted of a TEP molecule, the common ancestor of TEP-associated proteases (C2/Bf/Сf/Lf), the common ancestor of MASP-like proteases (MASP/C1r/C1s, MReM1/MReM2) and multimeric recognition proteins (C1q-, MBL- and FCN-homologs). Further evolutionary specialization and expansion of the complex was independent and lineage-specific, examples being the mammalian complement system and the Apogastropoda complement-like complex. The latter includes an impressive array of multimeric recognition proteins, the variable immunoglobulin and lectin domain containing molecules (VIgL), homologous to C1q, MBL, FCN and other lectins. Four novel polymorphic subfamilies of VIgLs were found to be expressed in Apogastropoda: C1q-related proteins (QREP), zona pellucida-related proteins (ZREP), Scavenger Receptor Cys-Rich-related proteins (SREP) and HPA-lectin related proteins (HREP). The transcriptional response of fibrinogen-related proteins of VIgL family (LlFREP), LlQREP and LlSREP to infestation of common periwinkle, Littorina littorea, with digenean parasite Himasthla elongata correlates with that of LlMReM1, supporting the model suggested in this study.
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Affiliation(s)
- Alexander M Gorbushin
- Sechenov Institute of Evolutionary Physiology and Biochemistry (IEPhB RAS), Saint-Petersburg, Russia.
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138
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Li X, Zhang X, Zhang Z, Han L, Gong D, Li J, Wang T, Wang Y, Gao S, Duan H, Kong F. Air pollution exposure and immunological and systemic inflammatory alterations among schoolchildren in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 657:1304-1310. [PMID: 30677897 DOI: 10.1016/j.scitotenv.2018.12.153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 05/22/2023]
Abstract
Exposure to air pollution is associated with an increased risk of respiratory infection, to which children are more susceptible than adults. However, epidemiological evidence regarding the association of chronic exposure to air pollution with the immune and systemic inflammatory function of children is scarce, especially in the context of higher exposure levels. In this study, we included 163 chronically exposed schoolchildren from a polluted area and 110 schoolchildren from a control area in Licheng district, Jinan, China. Immune biomarkers, including the absolute counts of lymphocyte subsets and the levels of immunoglobulins G, A, and M, C3, and C4 were determined. To explore the related biological process of altered immune biomarkers, 2 systemic inflammatory biomarkers, including C-reactive protein and the neutrophil-to-lymphocyte ratio, were also determined. After adjusting for confounders, the decreased B lymphocyte count (p = 0.021) and C3 and C4 levels (both p < 0.001) and the increased monocyte count (p = 0.009) and CD8+ T lymphocyte proportion (p = 0.054) were associated with living in the polluted area. Significant differences in the C4 and C3 levels between the areas were only seen in male schoolchildren and in schoolchildren without passive smoking exposure (Pinteraction = 0.036 and 0.042, respectively). The alterations in immune biomarkers suggested that air pollution-induced immunotoxic effects and relevant adaptive responses were simultaneously present in schoolchildren exposed to a higher level of air pollution. Future studies investigating the temporal patterns of these biomarkers among children are warranted.
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Affiliation(s)
- Xinwei Li
- Jinan Municipal Center for Disease Control and Prevention, Jinan, China
| | - Xiao Zhang
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | | | - Lianyu Han
- Licheng District Center for Disease Control and Prevention, Jinan, China
| | - Deping Gong
- Huaiyin District Health and Family Planning Supervision, Jinan, China
| | - Jie Li
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ting Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yanhua Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Sheng Gao
- Inner Mongolia Center for Disease Control and Prevention, Hohhot, China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Fanling Kong
- Shandong Center for Disease Control and Prevention, Jinan, China.
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139
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Rizk DV, Maillard N, Julian BA, Knoppova B, Green TJ, Novak J, Wyatt RJ. The Emerging Role of Complement Proteins as a Target for Therapy of IgA Nephropathy. Front Immunol 2019; 10:504. [PMID: 30941137 PMCID: PMC6433978 DOI: 10.3389/fimmu.2019.00504] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/25/2019] [Indexed: 12/28/2022] Open
Abstract
IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis worldwide and a common cause of end-stage renal disease. Evaluation of a kidney biopsy is necessary for diagnosis, with routine immunofluorescence microscopy revealing dominant or co-dominant IgA immunodeposits usually with complement C3 and sometimes IgG and/or IgM. IgA nephropathy reduces life expectancy by more than 10 years and leads to kidney failure in 20–40% of patients within 20 years of diagnosis. There is accumulating clinical, genetic, and biochemical evidence that complement plays an important role in the pathogenesis of IgA nephropathy. The presence of C3 differentiates the diagnosis of IgA nephropathy from the subclinical deposition of glomerular IgA. Markers for the activation of the alternative and mannan-binding lectin (MBL) pathways in renal-biopsy specimens are associated with disease activity and portend a worse renal outcome. Complement proteins in the circulation have also been evaluated in IgA nephropathy and found to be of prognostic value. Recently, genetic studies have identified IgA nephropathy-associated loci. Within these loci are genes encoding products involved in complement regulation and interaction with immune complexes. Put together, these data identify the complement cascade as a rational treatment target for this chronic kidney disease. Recent case reports on the successful use of humanized anti-C5 monoclonal antibody eculizumab are consistent with this hypothesis, but a better understanding of the role of complement in IgA nephropathy is needed to guide future therapeutic interventions.
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Affiliation(s)
- Dana V Rizk
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Nicolas Maillard
- Department of Nephrology, Dialysis, Transplantation, CHU de Saint-Etienne, GIMAP, EA3064, Université Jean Monnet, COMUE Université de Lyon, Rhône-Alpes, France
| | - Bruce A Julian
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Barbora Knoppova
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States.,Department of Immunology, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czechia
| | - Todd J Green
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Jan Novak
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Robert J Wyatt
- Department of Pediatrics, University of Tennessee Health Sciences Center, Memphis, TN, United States
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140
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Chen L, Huang R, Zhu D, Wang Y, Mehjabin R, Li Y, Liao L, He L, Zhu Z, Wang Y. Cloning of six serpin genes and their responses to GCRV infection in grass carp (Ctenopharyngodon idella). FISH & SHELLFISH IMMUNOLOGY 2019; 86:93-100. [PMID: 30439497 DOI: 10.1016/j.fsi.2018.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 09/29/2018] [Accepted: 11/03/2018] [Indexed: 06/09/2023]
Abstract
Grass carp, an economically important aquaculture fish, is very sensitive to Grass Carp Reovirus (GCRV). Haemorrhagic disease caused by GCRV infection can cause large-scale death of first-year grass carp, thereby severely restricting the intensive culture. Serpins (serine protease inhibitors) belong to the protease inhibitor gene family and are involved in numerous physiological and pathological processes, particularly coagulation and anticoagulation. Reports on grass carp serpins are scarce. Thus, we cloned six grass carp serpin genes (serpinb1, serpinc1, serpind1, serpinf1, serpinf2b and serping1) in this study. Molecular evolution showed that serpins between grass carp and zebrafish or carp are the closest relatives. SERPIN domains in these 6 serpins and reactive centre loop (RCL) along with their cleavage sites of 5 serpins (serpinb1, serpinc1, serpind1, serpinf2b and serping1) were predicted. Real-time quantitative PCR (RT-qPCR) showed that these serpins displayed tissue significance. Among them, serpinc1, serpind1, serpinf2b and serping1 had the highest expression levels in the liver. After GCRV infection, RT-qPCR showed that the liver-enriched serpins were significantly changed. Key procoagulant factor genes (kng-1, f2, f3a, f3b and f7) and anticoagulant genes (tpa, plg, thbd, proc and pros) also showed significant changes on the mRNA level. Comprehensive comparative analysis showed that the up-regulated expression of key clotting factor genes was more prominent than that of main anti-coagulation factor genes. Thus, the function of coagulation may be more dominant in grass carp during the GCRV infection, which may cause overproduction of thrombi. The serpins were involved in GCRV infection and liver-enriched serpins participate in the interaction between coagulation and anticoagulation. This study provided new insights into further research on the biological functions of grass carp serpins and clarifying the molecular mechanism of GCRV affecting the homeostasis of grass carp blood environment.
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Affiliation(s)
- Liangming Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rong Huang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Denghui Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | | | - Rumana Mehjabin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongming Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Lanjie Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Libo He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zuoyan Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yaping Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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141
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Tsai HM. Atypical Hemolytic Uremic Syndrome: Beyond Hemolysis and Uremia. Am J Med 2019; 132:161-167. [PMID: 30145224 DOI: 10.1016/j.amjmed.2018.08.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/08/2018] [Accepted: 08/11/2018] [Indexed: 12/20/2022]
Abstract
Atypical hemolytic uremic syndrome commonly presents with the triad of microangiopathic hemolytic anemia, thrombocytopenia, and renal function impairment without an antecedent hemorrhagic diarrhea. Less known are extrarenal complications due to abnormal vascular permeability, although these are a major cause of morbidity and mortality for the patients. Furthermore, it is increasingly recognized that the disease may present with hypertension or renal function impairment with no or mild thrombocytopenia and microangiopathic hemolytic anemia. Awareness of the full spectrum of atypical hemolytic uremic syndrome may facilitate its diagnosis and treatment before serious complications or death occurs.
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Affiliation(s)
- Han-Mou Tsai
- Division of Hematology/Oncology, State University of New York Downstate Medical Center, Brooklyn, NY.
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142
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Tucker TA. A Little Complement Goes a Long Way: A Perspective from the Pleural Space. Am J Respir Cell Mol Biol 2019; 60:384-385. [PMID: 30645146 PMCID: PMC6444633 DOI: 10.1165/rcmb.2018-0395ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Torry A Tucker
- 1 Department of Cellular and Molecular Biology The University of Texas Health Science Center at Tyler Tyler, Texas
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143
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Perera NCN, Godahewa GI, Jung S, Kim MJ, Nam BH, Lee J. Identification and characterization of a carboxypeptidase N1 from red lip mullet (Liza haematocheila); revealing its immune relevance. FISH & SHELLFISH IMMUNOLOGY 2019; 84:223-232. [PMID: 30300741 DOI: 10.1016/j.fsi.2018.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 09/29/2018] [Accepted: 10/05/2018] [Indexed: 06/08/2023]
Abstract
Complement system orchestrates the innate and adaptive immunity via the activation, recruitment, and regulation of immune molecules to destroy pathogens. However, regulation of the complement is essential to avoid injuries to the autologous tissues. The present study unveils the characteristic features of an important complement component, anaphylatoxin inactivator from red lip mullet at its molecular and functional level. Mullet carboxypeptidase N1 (MuCPN1) cDNA sequence possessed an open reading frame of 1347 bp, which encoded a protein of 449 amino acids with a predicted molecular weight of 51 kDa. In silico analysis discovered two domains of PM14-Zn carboxypeptidase and a C-terminal domain of M14 N/E carboxypeptidase, two zinc-binding signature motifs, and an N-glycosylation site in the MuCPN1 sequence. Homology analysis revealed that most of the residues in the sequence are conserved among the other selected homologs. Phylogeny analysis showed that MuCPN1 closely cladded with the Maylandia zebra CPN1 and clustered together with the teleostean counterparts. A challenge experiment showed modulated expression of MuCPN1 upon polyinosinic:polycytidylic acid and Lactococcus garviae in head kidney, spleen, gill, and liver tissues. The highest upregulation of MuCPN1 was observed 24 h post infection against poly I:C in each tissue. Moreover, the highest relative expressions upon L. garviae challenge were observed at 24 h post infection in head kidney tissue and 48 h post infection in spleen, gill, and liver tissues. MuCPN1 transfected cells triggered a 2.2-fold increase of nitric oxide (NO) production upon LPS stimulation compared to the un-transfected controls suggesting that MuCPN1 is an active protease which releases arginine from complement C3a, C4a, and C5a. These results have driven certain way towards enhancing the understanding of immune role of MuCPN1 in the complement defense mechanism of red lip mullet.
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Affiliation(s)
- N C N Perera
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - G I Godahewa
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Sumi Jung
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Myoung-Jin Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea.
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144
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Zhang R, Liu Q, Li T, Liao Q, Zhao Y. Role of the complement system in the tumor microenvironment. Cancer Cell Int 2019; 19:300. [PMID: 31787848 PMCID: PMC6858723 DOI: 10.1186/s12935-019-1027-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/11/2019] [Indexed: 12/17/2022] Open
Abstract
The complement system has traditionally been considered a component of innate immunity against invading pathogens and "nonself" cells. Recent studies have demonstrated the immunoregulatory functions of complement activation in the tumor microenvironment (TME). The TME plays crucial roles in tumorigenesis, progression, metastasis and recurrence. Imbalanced complement activation and the deposition of complement proteins have been demonstrated in many types of tumors. Plasma proteins, receptors, and regulators of complement activation regulate several biological functions of stromal cells in the TME and promote the malignant biological properties of tumors. Interactions between the complement system and cancer cells contribute to the proliferation, epithelial-mesenchymal transition, migration and invasion of tumor cells. In this review, we summarize recent advances related to the function of the complement system in the TME and discuss the therapeutic potential of targeting complement-mediated immunoregulation in cancer immunotherapy.
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Affiliation(s)
- Ronghua Zhang
- 0000 0001 0662 3178grid.12527.33Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, 1# Shuai Fu Yuan, Dong Dan District, Beijing, 100730 China
| | - Qiaofei Liu
- 0000 0001 0662 3178grid.12527.33Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, 1# Shuai Fu Yuan, Dong Dan District, Beijing, 100730 China
| | - Tong Li
- 0000 0001 0662 3178grid.12527.33Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, 1# Shuai Fu Yuan, Dong Dan District, Beijing, 100730 China
| | - Quan Liao
- 0000 0001 0662 3178grid.12527.33Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, 1# Shuai Fu Yuan, Dong Dan District, Beijing, 100730 China
| | - Yupei Zhao
- 0000 0001 0662 3178grid.12527.33Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, 1# Shuai Fu Yuan, Dong Dan District, Beijing, 100730 China
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145
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Hypocomplementemia as a Risk Factor for Organ Damage Accrual in Patients with Systemic Lupus Erythematosus. J Immunol Res 2018; 2018:8051972. [PMID: 30687766 PMCID: PMC6330819 DOI: 10.1155/2018/8051972] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/16/2018] [Indexed: 12/29/2022] Open
Abstract
While it is a common practice to monitor complement levels in patients with systemic lupus erythematosus to aid in flare prediction and detection, it is unclear if this strategy is helpful in preventing subsequent organ damage. We studied longitudinal complement levels in 102 SLE patients during a median follow-up of 13.8 years (IQR 7.0, 23.1). Low complement was defined as C3 < 0.84 g/L and/or C4 < 0.08 g/L, disease activity by clinical SLEDAI-2K, and organ damage by SLICC-DI. We calculated a time averaged clinical SLEDAI score (cWAS) and performed multivariate regression models to assess the independent predictive value of low complement for organ damage at last visit. Hypocomplementemia (HC) was observed in 67% of all patients and was more often due to low C3 (97%) than low C4 (54%). Compared to patients not developing HC (33%), HC patients were more frequently positive for anti-dsDNA Ab (72% vs 36%, p < 0.01) and aPL (74% vs 40%, p < 0.01) but HC was concurrently present with anti-dsDNA Ab in only half the cases. The time-adjusted cWAS scores (1.9 vs 1.2, p = 0.9), frequency (SDI > 0, n = 60), and type of organ damage accrual were similar for patients with and without HC (OR 1.08, p > 0.20). Intermittent or sustained HC has no predictive value for damage accrual in SLE or the underlying disease activity over time. This together with significant discrepancies in the concurrence of low C3, C4, and anti-dsDNA Ab indicates frequent activation of the complement pathway by other factors than immune complexes in SLE.
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146
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Molteni L, Rizzi L, Bresciani E, Meanti R, Fehrentz JA, Verdié P, Omeljaniuk RJ, Biagini G, Locatelli V, Torsello A. STIM Proteins and Orai Ca 2+ Channels Are Involved in the Intracellular Pathways Activated by TLQP-21 in RAW264.7 Macrophages. Front Pharmacol 2018; 9:1386. [PMID: 30542288 PMCID: PMC6277904 DOI: 10.3389/fphar.2018.01386] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/12/2018] [Indexed: 01/01/2023] Open
Abstract
TLQP-21 is a neuropeptide which has been implicated in regulation of nociception and other relevant physiologic functions. Although recent studies identified C3a and gC1q receptors as targets for TLQP-21, its intracellular molecular mechanisms of action remain largely unidentified. Our aim was (i) to explore the intracellular signaling pathway(s) activated by JMV5656, a novel derivative of TLQP-21, in RAW264.7 macrophages, and (ii) to assess linkages of these pathways with its purported receptors. JMV5656 stimulated, in a dose-dependent fashion, a rapid and transient increase in intracellular Ca2+ concentrations in RAW264.7 cells; repeated exposure to the peptide resulted in a lower response, suggesting a possible desensitization mechanism of the receptor. In particular, JMV5656 increased cytoplasmic Ca2+ levels by a PLC-dependent release of Ca2+ from the endoplasmic reticulum. STIM proteins and Orai Ca2+ channels were activated and played a crucial role. In fact, treatment of the cells with U73122 and thapsigargin modulated the increase of intracellular Ca2+ levels stimulated by JMV5656. Moreover, in RAW264.7 cells intracellular Ca2+ increases did not occur through the binding of JMV5656 to the C3a receptor, since the increase of intracellular Ca2+ levels induced by JMV5656 was not affected by specific siRNA against C3aR. In summary, our study provides new indications for the downstream effects of JMV5656 in macrophages, suggesting that it could activate receptors different from the C3aR.
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Affiliation(s)
- Laura Molteni
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Laura Rizzi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Elena Bresciani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Ramona Meanti
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Jean-Alain Fehrentz
- CNRS, Max Mousseron Institute of Biomolecules UMR5247, ENSCM, University of Montpellier, Montpellier, France
| | - Pascal Verdié
- CNRS, Max Mousseron Institute of Biomolecules UMR5247, ENSCM, University of Montpellier, Montpellier, France
| | | | - Giuseppe Biagini
- Department of Biomedical, Metabolic and Neural Sciences, Laboratory of Experimental Epileptology, University of Modena and Reggio Emilia, Modena, Italy
| | - Vittorio Locatelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Antonio Torsello
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
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147
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Interaction with complement proteins and dendritic cells implicates LCCL domain-containing proteins (CCps) of malaria parasites in immunomodulation. Biochem J 2018; 475:3311-3314. [PMID: 30401681 DOI: 10.1042/bcj20180494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/26/2018] [Accepted: 10/02/2018] [Indexed: 11/17/2022]
Abstract
The evasion of host immune defense is critical for pathogens to invade, establish infection and perpetuate in the host. The complement system is one of the first lines of innate immune defense in humans that destroys pathogens in the blood circulation. Activation of the complement system through direct encounter with pathogens or some other agents leads to osmolysis of pathogens, clearance of soluble immune complexes and recruitment of lymphocytes at the site of activation. Although malaria parasites are not exposed to the complement system owing to their intracellular development for most part of their life cycle in the human host, the extracellular stages must face the complement system of human or mosquito or both. In a recent issue of the Biochemical Journal, Sharma et al. reported that P lasmodium falciparum LCCL domain-containing protein 1 (PfCCp1) inhibited activation of the classical complement pathway and down-regulated effector responses of dendritic cells, which implicate PfCCp1 and related proteins in immunomodulation of the host that likely benefits the parasite. PfCCp1 belongs to a multi-domain protein family that exists as multimeric protein complexes. It needs to be investigated whether PfCCp1 or its multimeric protein complexes have an immunomodulatory effect in vivo and on the mosquito complement system.
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148
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Puente-Marin S, Nombela I, Chico V, Ciordia S, Mena MC, Coll J, Mercado L, Ortega-Villaizan MDM. Rainbow Trout Erythrocytes ex vivo Transfection With a DNA Vaccine Encoding VHSV Glycoprotein G Induces an Antiviral Immune Response. Front Immunol 2018; 9:2477. [PMID: 30429850 PMCID: PMC6220650 DOI: 10.3389/fimmu.2018.02477] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 10/08/2018] [Indexed: 11/23/2022] Open
Abstract
Fish red blood cells (RBCs), are integral in several biologic processes relevant to immunity, such as pathogen recognition, pathogen binding and clearance, and production of effector molecules and cytokines. So far, one of the best strategies to control and prevent viral diseases in aquaculture is DNA immunization. DNA vaccines (based on the rhabdoviral glycoprotein G [gpG] gene) have been shown to be effective against fish rhabdoviruses. However, more knowledge about the immune response triggered by DNA immunization is necessary to develop novel and more effective strategies. In this study, we investigated the role of fish RBCs in immune responses induced by DNA vaccines. We show for the first time that rainbow trout RBCs express gpG of viral hemorrhagic septicaemia virus (VHSV) (GVHSV) when transfected with the DNA vaccine ex vivo and modulate the expression of immune genes and proteins. Functional network analysis of transcriptome profiling of RBCs expressing GVHSV revealed changes in gene expression related to G-protein coupled receptor (GPCR)-downstream signaling, complement activation, and RAR related orphan receptor α (RORA). Proteomic profile functional network analysis of GVHSV-transfected RBCs revealed proteins involved in the detoxification of reactive oxygen species, interferon-stimulated gene 15 (ISG15) antiviral mechanisms, antigen presentation of exogenous peptides, and the proteasome. Conditioned medium of GVHSV-transfected RBCs conferred antiviral protection and induced ifn1 and mx gene expression in RTG-2 cells infected with VHSV. In summary, rainbow trout nucleated RBCs could be actively participating in the regulation of the fish immune response to GVHSV DNA vaccine, and thus may represent a possible carrier cells for the development of new vaccine approaches.
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Affiliation(s)
- Sara Puente-Marin
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Elche, Spain
| | - Ivan Nombela
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Elche, Spain
| | - Veronica Chico
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Elche, Spain
| | - Sergio Ciordia
- Unidad de Proteómica, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Maria Carmen Mena
- Unidad de Proteómica, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Julio Coll
- Instituto Nacional de Investigaciones Agrarias, Biotecnología, Madrid, Spain
| | - Luis Mercado
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso Valparaíso, Chile
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Lopez V, van der Heijden E, Villar M, Michel A, Alberdi P, Gortázar C, Rutten V, de la Fuente J. Comparative proteomics identified immune response proteins involved in response to vaccination with heat-inactivated Mycobacterium bovis and mycobacterial challenge in cattle. Vet Immunol Immunopathol 2018; 206:54-64. [PMID: 30502913 DOI: 10.1016/j.vetimm.2018.10.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 09/19/2018] [Accepted: 10/26/2018] [Indexed: 11/30/2022]
Abstract
There is an imperative need for effective control of bovine tuberculosis (BTB) on a global scale and vaccination of cattle may prove to be pivotal in achieving this. The oral and parenteral use of a heat-inactivated Mycobacterium bovis (M. bovis) vaccine has previously been found to confer partial protection against BTB in several species. A role for complement factor C3 has been suggested in wild boar, but the exact mechanism by which this vaccine provides protection remains unclear. In the present study, a quantitative proteomics approach was used to analyze the white blood cell proteome of vaccinated cattle in comparison to unvaccinated controls, prior (T0) and in response to vaccination, skin test and challenge (T9 and T12). The Fisher's exact test was used to compare the proportion of positive reactors to standard immunological assays for BTB (the BOVIGAM® assay, IDEXX TB ELISA and skin test) between the vaccinated and control groups. Using reverse-phase liquid-chromatography tandem mass spectrometry (RP-LC-MS/MS), a total of 12,346 proteins were identified with at least two peptides per protein and the Chi2-test (P = 0.05) determined 1,222 to be differentially represented at the key time point comparisons. Gene ontology (GO) analysis was performed in order to determine the biological processes (BPs), molecular functions (MFs) and cell components (CCs) the proteins formed part of. The analysis was focused on immune system BPs, specifically. GO analysis revealed that the most overrepresented proteins in immune system BPs, were kinase activity and receptor activity molecular functions and extracellular, Golgi apparatus and endosome cell components and included complement factor C8α and C8β as well as toll-like receptors 4 (TLR4) and 9 (TLR9). Proteins of the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) (JAK-STAT) and protein kinase C (PKC) signaling pathways were furthermore found to potentially be involved in the immune response elicited by the inactivated vaccine. In conclusion, this study provides a first indication of the role of several immune system pathways in response to the heat-inactivated M. bovis vaccine and mycobacterial challenge.
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Affiliation(s)
- Vladimir Lopez
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
| | - Elisabeth van der Heijden
- Division of Immunology, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, the Netherlands; Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, Pretoria, South Africa.
| | - Margarita Villar
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
| | - Anita Michel
- Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, Pretoria, South Africa; Research Associate of the National Zoological Gardens of South Africa, 232 Boom St, Daspoort 319-Jr, 0001, Pretoria, South Africa
| | - Pilar Alberdi
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
| | - Christian Gortázar
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
| | - Victor Rutten
- Division of Immunology, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, the Netherlands; Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, Pretoria, South Africa
| | - José de la Fuente
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain; Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, USA
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150
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Abstract
The complement system is a critical part of host defense to many bacterial, viral, and fungal infections. It works alongside pattern recognition receptors to stimulate host defense systems in advance of activation of the adaptive immune response. In this study, we directly test the role of complement in SARS-CoV pathogenesis using a mouse model and show that respiratory disease is significantly reduced in the absence of complement even though viral load is unchanged. Complement-deficient mice have reduced neutrophilia in their lungs and reduced systemic inflammation, consistent with the observation that SARS-CoV pathogenesis is an immune-driven disease. These data suggest that inhibition of complement signaling might be an effective treatment option following coronavirus infection. Acute respiratory distress syndrome (ARDS) is immune-driven pathologies that are observed in severe cases of severe acute respiratory syndrome coronavirus (SARS-CoV) infection. SARS-CoV emerged in 2002 to 2003 and led to a global outbreak of SARS. As with the outcome of human infection, intranasal infection of C57BL/6J mice with mouse-adapted SARS-CoV results in high-titer virus replication within the lung, induction of inflammatory cytokines and chemokines, and immune cell infiltration within the lung. Using this model, we investigated the role of the complement system during SARS-CoV infection. We observed activation of the complement cascade in the lung as early as day 1 following SARS-CoV infection. To test whether this activation contributed to protective or pathologic outcomes, we utilized mice deficient in C3 (C3–/–), the central component of the complement system. Relative to C57BL/6J control mice, SARS-CoV-infected C3–/– mice exhibited significantly less weight loss and less respiratory dysfunction despite equivalent viral loads in the lung. Significantly fewer neutrophils and inflammatory monocytes were present in the lungs of C3–/– mice than in C56BL/6J controls, and subsequent studies revealed reduced lung pathology and lower cytokine and chemokine levels in both the lungs and the sera of C3–/– mice than in controls. These studies identify the complement system as an important host mediator of SARS-CoV-induced disease and suggest that complement activation regulates a systemic proinflammatory response to SARS-CoV infection. Furthermore, these data suggest that SARS-CoV-mediated disease is largely immune driven and that inhibiting complement signaling after SARS-CoV infection might function as an effective immune therapeutic.
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