101
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Bermejo-Jambrina M, Eder J, Helgers LC, Hertoghs N, Nijmeijer BM, Stunnenberg M, Geijtenbeek TBH. C-Type Lectin Receptors in Antiviral Immunity and Viral Escape. Front Immunol 2018; 9:590. [PMID: 29632536 PMCID: PMC5879224 DOI: 10.3389/fimmu.2018.00590] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/09/2018] [Indexed: 02/01/2023] Open
Abstract
C-type lectin receptors (CLRs) are important pattern recognition receptors involved in recognition and induction of adaptive immunity to pathogens. Certain CLRs play an important role in viral infections as they efficiently interact with viruses. However, it has become clear that deadly viruses subvert the function of CLRs to escape antiviral immunity and promote infection. In particular, viruses target CLRs to suppress or modulate type I interferons that play a central role in the innate and adaptive defense against viruses. In this review, we discuss the function of CLRs in binding to enveloped viruses like HIV-1 and Dengue virus, and how uptake and signaling cascades have decisive effects on the outcome of infection.
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Affiliation(s)
- Marta Bermejo-Jambrina
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Julia Eder
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Leanne C Helgers
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Nina Hertoghs
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Bernadien M Nijmeijer
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Melissa Stunnenberg
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Teunis B H Geijtenbeek
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
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102
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Signal peptide of HIV envelope protein impacts glycosylation and antigenicity of gp120. Proc Natl Acad Sci U S A 2018; 115:2443-2448. [PMID: 29463753 PMCID: PMC5877976 DOI: 10.1073/pnas.1722627115] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The HIV-1 envelope protein (Env) of early-replicating viruses encodes several distinct transmission signatures. One such signature involves a reduced number of potential N-linked glycosylation sites (PNGs). This transmission signature underscores the importance of posttranslational modifications in the fitness of early-replicating isolates. An additional signature in Env involves the overrepresentation of basic amino acid residues at a specific position in the Env signal peptide (SP). In this report, we investigated the potential impact of this SP signature on gp120 glycosylation and antigenicity. Two recombinant gp120s were constructed, one derived from an isolate that lacks this signature and a second from an early-replicating isolate that includes this signature. Chimeric gp120s were also constructed in which the two SPs were swapped between the isolates. All four gp120s were probed with glycan-, structure- and receptor- specific probes in a surface plasmon resonance binding assay. We found that the SP of Env influences qualitative aspects of Env glycosylation that in turn affect the antigenicity of Env in a major way. The SP impacts the affinity of Env for DC-SIGN, a lectin receptor expressed on dendritic cells that is believed to play a role in mucosal transmission. Additionally, affinity for the monoclonal antibodies 17b and A32, which recognize a CD4-induced, open conformation of Env is also altered. These results demonstrate that natural variation in the SP of HIV Env can significantly impact the antigenicity of mature gp120. Thus, the SP is likely subject to antibody-mediated immune pressure.
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103
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Abstract
Transmission of flaviviruses by hematophagous insects such as mosquitoes requires acquisition of the virus during blood feeding on the host, with midgut as the primary infection site. Here, we report that N-glycosylation of the E protein, which is conserved among most flaviviruses, is critical for the Zika virus (ZIKV) to invade the vector midgut by inhibiting the reactive oxygen species (ROS) pathway of the mosquito immune system. Our data further show that removal of the ZIKV E glycosylation site prevents mosquito infection by flaviviruses via the oral route, whereas there is no effect on infection by intrathoracic microinjection, which bypasses the midgut. Interestingly, the defect in infection of the mosquito midgut by the mutant virus through blood feeding is rescued by reduction of the ROS level by application of vitamin C, a well-known antioxidant. Therefore, our data demonstrate that ZIKV utilizes the glycosylation on the envelope to antagonize the vector immune defense during infection.IMPORTANCE Most flaviviruses, including Zika virus (ZIKV), are transmitted between hosts by arthropod vectors, such as mosquitoes, which acquire the virus during a blood meal. Here, by mutagenesis, we found a major role of the N-glycosylation of flavivirus E protein in its transmission circle, facilitating its survival against the vector immune system during invasion of the mosquito midgut while blood feeding on the host. In spite of the extensive studies of the involvement of N-glycan modification of flavivirus E protein in virus-host interactions, we discovered its critical role in virus-vector interaction and the evolution of flavivirus. Given the deleterious effects of ZIKV on human health, this study might have a significant impact on development of novel transmission-blocking strategies.
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104
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Roychowdhury S, Oh YJ, Kajiura H, Hamorsky KT, Fujiyama K, Matoba N. Hydroponic Treatment of Nicotiana benthamiana with Kifunensine Modifies the N-glycans of Recombinant Glycoprotein Antigens to Predominantly Man9 High-Mannose Type upon Transient Overexpression. FRONTIERS IN PLANT SCIENCE 2018; 9:62. [PMID: 29441088 PMCID: PMC5797603 DOI: 10.3389/fpls.2018.00062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/12/2018] [Indexed: 05/17/2023]
Abstract
Nicotiana benthamiana transient overexpression systems offer unique advantages for rapid and scalable biopharmaceuticals production, including high scalability and eukaryotic post-translational modifications such as N-glycosylation. High-mannose-type glycans (HMGs) of glycoprotein antigens have been implicated in the effectiveness of some subunit vaccines. In particular, Man9GlcNAc2 (Man9) has high binding affinity to mannose-specific C-type lectin receptors such as the mannose receptor and dendritic cell-specific intracellular adhesion molecule 3-grabbing non-integrin (DC-SIGN). Here, we investigated the effect of kifunensine, an α-mannosidase I inhibitor, supplemented in a hydroponic culture of N. benthamiana for the production of Man9-rich HMG glycoproteins, using N-glycosylated cholera toxin B subunit (gCTB) and human immunodeficiency virus gp120 that are tagged with a H/KDEL endoplasmic reticulum retention signal as model vaccine antigens. Biochemical analysis using anti-fucose and anti-xylose antibodies as well as Endo H and PNGase F digestion showed that kifunensine treatment effectively reduced plant-specific glycoforms while increasing HMGs in the N-glycan compositions of gCTB. Detailed glycan profiling revealed that plant-produced gp120 had a glycan profile bearing mostly HMGs regardless of kifunensine treatment. However, the gp120 produced under kifunensine-treatment conditions showed Man9 being the most prominent glycoform (64.5%), while the protein produced without kifunensine had a substantially lower Man9 composition (20.3%). Our results open up possibilities for efficient production of highly mannosylated recombinant vaccine antigens in plants.
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Affiliation(s)
- Sugata Roychowdhury
- James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, United States
| | - Young J. Oh
- James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, United States
| | - Hiroyuki Kajiura
- The International Center for Biotechnology, Osaka University, Suita, Japan
| | - Krystal T. Hamorsky
- James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY, United States
| | - Kazuhito Fujiyama
- The International Center for Biotechnology, Osaka University, Suita, Japan
| | - Nobuyuki Matoba
- James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, United States
- Center for Predictive Medicine, University of Louisville School of Medicine, Louisville, KY, United States
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, United States
- *Correspondence: Nobuyuki Matoba
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105
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Probing Multivalent Protein–Carbohydrate Interactions by Quantum Dot-Förster Resonance Energy Transfer. Methods Enzymol 2018; 598:71-100. [DOI: 10.1016/bs.mie.2017.06.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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106
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Zheng RB, Jégouzo SAF, Joe M, Bai Y, Tran HA, Shen K, Saupe J, Xia L, Ahmed MF, Liu YH, Patil PS, Tripathi A, Hung SC, Taylor ME, Lowary TL, Drickamer K. Insights into Interactions of Mycobacteria with the Host Innate Immune System from a Novel Array of Synthetic Mycobacterial Glycans. ACS Chem Biol 2017; 12:2990-3002. [PMID: 29048873 PMCID: PMC5735379 DOI: 10.1021/acschembio.7b00797] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
An
array of homogeneous glycans representing all the major carbohydrate
structures present in the cell wall of the human pathogen Mycobacterium tuberculosis and other mycobacteria has been
probed with a panel of glycan-binding receptors expressed on cells
of the mammalian innate immune system. The results provide an overview
of interactions between mycobacterial glycans and receptors that mediate
uptake and survival in macrophages, dendritic cells, and sinusoidal
endothelial cells. A subset of the wide variety of glycan structures
present on mycobacterial surfaces interact with cells of the innate
immune system through the receptors tested. Endocytic receptors, including
the mannose receptor, DC-SIGN, langerin, and DC-SIGNR (L-SIGN), interact
predominantly with mannose-containing caps found on the mycobacterial
polysaccharide lipoarabinomannan. Some of these receptors also interact
with phosphatidyl-myo-inositol mannosides and mannose-containing
phenolic glycolipids. Many glycans are ligands for overlapping sets
of receptors, suggesting multiple, redundant routes by which mycobacteria
can enter cells. Receptors with signaling capability interact with
two distinct sets of mycobacterial glycans: targets for dectin-2 overlap
with ligands for the mannose-binding endocytic receptors, while mincle
binds exclusively to trehalose-containing structures such as trehalose
dimycolate. None of the receptors surveyed bind furanose residues,
which often form part of the epitopes recognized by antibodies to
mycobacteria. Thus, the innate and adaptive immune systems can target
different sets of mycobacterial glycans. This array, the first of
its kind, represents an important new tool for probing, at a molecular
level, biological roles of a broad range of mycobacterial glycans,
a task that has not previously been possible.
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Affiliation(s)
- Ruixiang Blake Zheng
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | | | - Maju Joe
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Yu Bai
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Huu-Anh Tran
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Ke Shen
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Jörn Saupe
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Li Xia
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Md. Faiaz Ahmed
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Yu-Hsuan Liu
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | | | - Ashish Tripathi
- Genomics
Research Centre, Academia Sinica, Nangang, Taipei 11529, Taiwan
| | - Shang-Cheng Hung
- Genomics
Research Centre, Academia Sinica, Nangang, Taipei 11529, Taiwan
| | - Maureen E. Taylor
- Department
of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom
| | - Todd L. Lowary
- Department
of Chemistry and Alberta Glycomics Centre, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Kurt Drickamer
- Department
of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom
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107
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Sager CP, Eriş D, Smieško M, Hevey R, Ernst B. What contributes to an effective mannose recognition domain? Beilstein J Org Chem 2017; 13:2584-2595. [PMID: 29259668 PMCID: PMC5727865 DOI: 10.3762/bjoc.13.255] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/15/2017] [Indexed: 12/27/2022] Open
Abstract
In general, carbohydrate-lectin interactions are characterized by high specificity but also low affinity. The main reason for the low affinities are desolvation costs, due to the numerous hydroxy groups present on the ligand, together with the typically polar surface of the binding sites. Nonetheless, nature has evolved strategies to overcome this hurdle, most prominently in relation to carbohydrate-lectin interactions of the innate immune system but also in bacterial adhesion, a process key for the bacterium's survival. In an effort to better understand the particular characteristics, which contribute to a successful carbohydrate recognition domain, the mannose-binding sites of six C-type lectins and of three bacterial adhesins were analyzed. One important finding is that the high enthalpic penalties caused by desolvation can only be compensated for by the number and quality of hydrogen bonds formed by each of the polar hydroxy groups engaged in the binding process. In addition, since mammalian mannose-binding sites are in general flat and solvent exposed, the half-lives of carbohydrate-lectin complexes are rather short since water molecules can easily access and displace the ligand from the binding site. In contrast, the bacterial lectin FimH benefits from a deep mannose-binding site, leading to a substantial improvement in the off-rate. Together with both a catch-bond mechanism (i.e., improvement of affinity under shear stress) and multivalency, two methods commonly utilized by pathogens, the affinity of the carbohydrate-FimH interaction can be further improved. Including those just described, the various approaches explored by nature to optimize selectivity and affinity of carbohydrate-lectin interactions offer interesting therapeutic perspectives for the development of carbohydrate-based drugs.
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Affiliation(s)
- Christoph P Sager
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Deniz Eriş
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Martin Smieško
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Rachel Hevey
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Beat Ernst
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
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108
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Raich I, Lövyová Z, Trnka L, Parkan K, Kessler J, Pohl R, Kaminský J. Limitations in the description of conformational preferences of C-disaccharides: The (1 → 3)-C-mannobiose case. Carbohydr Res 2017; 451:42-50. [PMID: 28950209 DOI: 10.1016/j.carres.2017.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 09/07/2017] [Accepted: 09/11/2017] [Indexed: 11/19/2022]
Abstract
Conformational preferences of two C-glycosyl analogues of Manp-(1 → 3)-Manp, were studied using a combined method of theoretical and experimental chemistry. Molecular dynamics was utilized to provide conformational behavior along C-glycosidic bonds of methyl 3-deoxy-3-C-[(α-d-mannopyranosyl)methyl]-α-d- and l-mannopyranosides. The OPLS2005 and Glycam06 force fields were used. Simulations were performed with explicit water (TIP3P) and methanol. Results were compared with a complete conformational scan at the MM4 level with the dielectric constant corresponding to methanol. In order to verify predicted conformational preferences, vicinal 3JHH NMR coupling constants were calculated by the Karplus equation on simulated potential energy surfaces (PES). A set of new parameters for the Karplus equation was also designed. Predicted 3JHH were compared with experimental data. We also used reverse methodology, in which the 3JHH coupling constants were calculated at the DFT level for each family of (ϕ, ψ)-conformers separately and then experimental values were decomposed onto calculated 3JHH couplings in order to obtain experimentally derived populations of conformers. As an alternative method of evaluation of preferred conformers, analysis of sensitive 13C chemical shifts was introduced. We were able to thoroughly discuss several fundamental issues in predictions of preferred conformers of C-saccharides, such as the solvent effect, reliability of the force field, character of empirical Karplus equation or applicability of NMR parameters in predictions of conformational preferences in general.
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Affiliation(s)
- Ivan Raich
- University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Zuzana Lövyová
- University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Ladislav Trnka
- University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Kamil Parkan
- University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic; Institute of Organic Chemistry and Biochemistry AS CR, Gilead Sciences & IOCB Research Center, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Jiří Kessler
- Institute of Organic Chemistry and Biochemistry AS CR, Gilead Sciences & IOCB Research Center, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry AS CR, Gilead Sciences & IOCB Research Center, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Jakub Kaminský
- Institute of Organic Chemistry and Biochemistry AS CR, Gilead Sciences & IOCB Research Center, Flemingovo nám. 2, 166 10 Prague, Czech Republic.
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109
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Nagae M, Mishra SK, Hanashima S, Tateno H, Yamaguchi Y. Distinct roles for each N-glycan branch interacting with mannose-binding type Jacalin-related lectins Orysata and Calsepa. Glycobiology 2017; 27:1120-1133. [DOI: 10.1093/glycob/cwx081] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 09/06/2017] [Indexed: 12/17/2022] Open
Affiliation(s)
- Masamichi Nagae
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN Global Research Cluster, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Sushil K Mishra
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN Global Research Cluster, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shinya Hanashima
- Department of Chemistry, Osaka University, Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroaki Tateno
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN Global Research Cluster, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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110
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Jakobsdottir GM, Iliopoulou M, Nolan R, Alvarez L, Compton AA, Padilla-Parra S. On the Whereabouts of HIV-1 Cellular Entry and Its Fusion Ports. Trends Mol Med 2017; 23:932-944. [PMID: 28899754 DOI: 10.1016/j.molmed.2017.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/12/2017] [Accepted: 08/14/2017] [Indexed: 01/06/2023]
Abstract
HIV-1 disseminates to diverse tissues through different cell types and establishes long-lived reservoirs. The exact cellular compartment where fusion occurs differs depending on the cell type and mode of viral transmission. This implies that HIV-1 may modulate a number of common host cell factors in different cell types. In this review, we evaluate recent advances on the host cell factors that play an important role in HIV-1 entry and fusion. New insights from restriction factors inhibiting virus-cell fusion in vitro may contribute to the development of future therapeutic interventions. Collectively, novel findings underline the need for potent, host-directed therapies that disrupt the earliest stages of the virus life cycle and preclude the emergence of resistant viral variants.
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Affiliation(s)
- G Maria Jakobsdottir
- Wellcome Trust Centre for Human Genetics, Cellular Imaging, University of Oxford, Oxford, UK
| | - Maro Iliopoulou
- Wellcome Trust Centre for Human Genetics, Cellular Imaging, University of Oxford, Oxford, UK
| | - Rory Nolan
- Wellcome Trust Centre for Human Genetics, Cellular Imaging, University of Oxford, Oxford, UK
| | - Luis Alvarez
- Wellcome Trust Centre for Human Genetics, Cellular Imaging, University of Oxford, Oxford, UK
| | - Alex A Compton
- HIV Dynamics and Replication Program, National Cancer Institute, Frederick, MD 21702, USA
| | - Sergi Padilla-Parra
- Wellcome Trust Centre for Human Genetics, Cellular Imaging, University of Oxford, Oxford, UK; Division of Structural Biology, University of Oxford,The Henry Wellcome Building for Genomic Medicine, Headington, Oxford OX3 7BN, UK.
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111
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Tongue Sole CD209: A Pattern-Recognition Receptor that Binds a Broad Range of Microbes and Promotes Phagocytosis. Int J Mol Sci 2017; 18:ijms18091848. [PMID: 28869534 PMCID: PMC5618497 DOI: 10.3390/ijms18091848] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/12/2017] [Accepted: 08/15/2017] [Indexed: 01/24/2023] Open
Abstract
CD209 is an immune receptor that plays an important role in the initiation of innate immunity and activation of adaptive immunity in mammals. However, much less is known about the immunological function of CD209 in lower vertebrates. In the present study, we examined the immune effect of a CD209 homologue (CsCD209) from the teleost fish tongue sole Cynoglossus semilaevis. CsCD209 possesses a lectin domain that shares high levels of similarity with the lectin domains of human and mouse CD209. CsCD209 expression was most abundant in kidney and blood and was significantly upregulated during bacterial infection. CsCD209 exhibited a subcellular localization mainly on the cell surface of myelomonocytes. Recombinant CsCD209 displayed apparent binding capacities to a broad range of bacteria and fungi, and significantly promoted the phagocytosis of the bound bacteria by C. semilaevis leukocytes. Collectively, the results indicate that teleost CD209 serves as a pattern recognition receptor that exerts an influence on the phagocytosis process during pathogen infections.
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112
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Guo Y, Nehlmeier I, Poole E, Sakonsinsiri C, Hondow N, Brown A, Li Q, Li S, Whitworth J, Li Z, Yu A, Brydson R, Turnbull WB, Pöhlmann S, Zhou D. Dissecting Multivalent Lectin-Carbohydrate Recognition Using Polyvalent Multifunctional Glycan-Quantum Dots. J Am Chem Soc 2017; 139:11833-11844. [PMID: 28786666 PMCID: PMC5579584 DOI: 10.1021/jacs.7b05104] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Indexed: 01/05/2023]
Abstract
Multivalent protein-carbohydrate interactions initiate the first contacts between virus/bacteria and target cells, which ultimately lead to infection. Understanding the structures and binding modes involved is vital to the design of specific, potent multivalent inhibitors. However, the lack of structural information on such flexible, complex, and multimeric cell surface membrane proteins has often hampered such endeavors. Herein, we report that quantum dots (QDs) displayed with a dense array of mono-/disaccharides are powerful probes for multivalent protein-glycan interactions. Using a pair of closely related tetrameric lectins, DC-SIGN and DC-SIGNR, which bind to the HIV and Ebola virus glycoproteins (EBOV-GP) to augment viral entry and infect target cells, we show that such QDs efficiently dissect the different DC-SIGN/R-glycan binding modes (tetra-/di-/monovalent) through a combination of multimodal readouts: Förster resonance energy transfer (FRET), hydrodynamic size measurement, and transmission electron microscopy imaging. We also report a new QD-FRET method for quantifying QD-DC-SIGN/R binding affinity, revealing that DC-SIGN binds to the QD >100-fold tighter than does DC-SIGNR. This result is consistent with DC-SIGN's higher trans-infection efficiency of some HIV strains over DC-SIGNR. Finally, we show that the QDs potently inhibit DC-SIGN-mediated enhancement of EBOV-GP-driven transduction of target cells with IC50 values down to 0.7 nM, matching well to their DC-SIGN binding constant (apparent Kd = 0.6 nM) measured by FRET. These results suggest that the glycan-QDs are powerful multifunctional probes for dissecting multivalent protein-ligand recognition and predicting glyconanoparticle inhibition of virus infection at the cellular level.
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Affiliation(s)
- Yuan Guo
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Inga Nehlmeier
- Infection
Biology Unit, German Primate Center, Kellnerweg 4, Gottingen 37077, Germany
| | - Emma Poole
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Chadamas Sakonsinsiri
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Nicole Hondow
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Andy Brown
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Qing Li
- Department
of Chemical Biology, Peking University Health
Sciences Centre, Beijing 100191, People’s Republic
of China
| | - Shuang Li
- Department
of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Jessie Whitworth
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Zhongjun Li
- Department
of Chemical Biology, Peking University Health
Sciences Centre, Beijing 100191, People’s Republic
of China
| | - Anchi Yu
- Department
of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Rik Brydson
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - W. Bruce Turnbull
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Stefan Pöhlmann
- Infection
Biology Unit, German Primate Center, Kellnerweg 4, Gottingen 37077, Germany
| | - Dejian Zhou
- School
of Chemistry and Astbury Centre for Structural Molecular Biology, and School of Chemical
and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
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113
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Te Riet J, Joosten B, Reinieren-Beeren I, Figdor CG, Cambi A. N-glycan mediated adhesion strengthening during pathogen-receptor binding revealed by cell-cell force spectroscopy. Sci Rep 2017; 7:6713. [PMID: 28751750 PMCID: PMC5532264 DOI: 10.1038/s41598-017-07220-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/23/2017] [Indexed: 01/13/2023] Open
Abstract
Glycan-protein lateral interactions have gained increased attention as important modulators of receptor function, by regulating surface residence time and endocytosis of membrane glycoproteins. The pathogen-recognition receptor DC-SIGN is highly expressed at the membrane of antigen-presenting dendritic cells, where it is organized in nanoclusters and binds to different viruses, bacteria and fungi. We recently demonstrated that DC-SIGN N-glycans spatially restrict receptor diffusion within the plasma membrane, favoring its internalization through clathrin-coated pits. Here, we investigated the involvement of the N-glycans of DC-SIGN expressing cells on pathogen binding strengthening when interacting with Candida fungal cells by using atomic force microscope (AFM)-assisted single cell-pathogen adhesion measurements. The use of DC-SIGN mutants lacking the N-glycans as well as blocking glycan-mediated lateral interactions strongly impaired cell stiffening during pathogen binding. Our findings demonstrate for the first time the direct involvement of the cell membrane glycans in strengthening cell-pathogen interactions. This study, therefore, puts forward a possible role for the glycocalyx as extracellular cytoskeleton contributing, possibly in connection with the intracellular actin cytoskeleton, to optimize strengthening of cell-pathogen interactions in the presence of mechanical forces.
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Affiliation(s)
- Joost Te Riet
- Department of Tumor Immunology, Radboud Institute for Medical Life Sciences, Radboud University Medical Center, Grooteplein Zuid 26-28, 6525 GA, Nijmegen, The Netherlands
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA, Nijmegen, The Netherlands
| | - Ben Joosten
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, 6525 GA, Nijmegen, The Netherlands
| | - Inge Reinieren-Beeren
- Department of Tumor Immunology, Radboud Institute for Medical Life Sciences, Radboud University Medical Center, Grooteplein Zuid 26-28, 6525 GA, Nijmegen, The Netherlands
| | - Carl G Figdor
- Department of Tumor Immunology, Radboud Institute for Medical Life Sciences, Radboud University Medical Center, Grooteplein Zuid 26-28, 6525 GA, Nijmegen, The Netherlands.
| | - Alessandra Cambi
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, 6525 GA, Nijmegen, The Netherlands.
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114
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Leelayuwapan H, Kangwanrangsan N, Chawengkirttikul R, Ponpuak M, Charlermroj R, Boonyarattanakalin K, Ruchirawat S, Boonyarattanakalin S. Synthesis and Immunological Studies of the Lipomannan Backbone Glycans Found on the Surface of Mycobacterium tuberculosis. J Org Chem 2017; 82:7190-7199. [PMID: 28682637 DOI: 10.1021/acs.joc.7b00703] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Investigations into novel bacterial drug targets and vaccines are necessary to overcome tuberculosis. Lipomannan (LM), found on the surface of Mycobacterium tuberculosis (Mtb), is actively involved in the pathogenesis and survival of Mtb. Here, we report for the first time a rapid synthesis and biological activities of an LM glycan backbone, α(1-6)mannans. The rapid synthesis is achieved via a regio- and stereoselective ring opening polymerization to generate multiple glycosidic bonds in one simple chemical step, allowing us to finish assembling the defined polysaccharides of 5-20 units within days rather than years. Within the same pot, the polymerization is terminated by a thiol-linker to serve as a conjugation point to carrier proteins and surfaces for immunological experiments. The synthetic glycans are found to have adjuvant activities in vivo. The interactions with DC-SIGN demonstrated the significance of α(1-6)mannan motif present in LM structure. Moreover, surface plasmon resonance (SPR) showed that longer chain of synthetic α(1-6)mannans gain better lectin's binding affinity. The chemically defined components of the bacterial envelope serve as important tools to reveal the interactions of Mtb with mammalian hosts and facilitate the determination of the immunologically active molecular components.
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Affiliation(s)
- Harin Leelayuwapan
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Research Institute, Center of Excellence on Environmental Health and Toxicology (EHT) , Bangkok 10210, Thailand
| | - Niwat Kangwanrangsan
- Department of Pathobiology, Faculty of Science, Mahidol University , Bangkok 10400, Thailand
| | | | - Marisa Ponpuak
- Department of Microbiology, Faculty of Science, Mahidol University , Bangkok 10400, Thailand
| | - Ratthaphol Charlermroj
- Microarray Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) , Pathumthani 12120, Thailand
| | - Kanokthip Boonyarattanakalin
- College of Nanotechnology, King Mongkut's Institute of Technology Ladkrabang , Ladkrabang, Bangkok 10520, Thailand
| | - Somsak Ruchirawat
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Research Institute, Center of Excellence on Environmental Health and Toxicology (EHT) , Bangkok 10210, Thailand
| | - Siwarutt Boonyarattanakalin
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University , Pathumthani 12121, Thailand
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115
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Zhang YL, Peng B, Li H, Yan F, Wu HK, Zhao XL, Lin XM, Min SY, Gao YY, Wang SY, Li YY, Peng XX. C-Terminal Domain of Hemocyanin, a Major Antimicrobial Protein from Litopenaeus vannamei: Structural Homology with Immunoglobulins and Molecular Diversity. Front Immunol 2017; 8:611. [PMID: 28659912 PMCID: PMC5468459 DOI: 10.3389/fimmu.2017.00611] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/09/2017] [Indexed: 11/24/2022] Open
Abstract
Invertebrates rely heavily on immune-like molecules with highly diversified variability so as to counteract infections. However, the mechanisms and the relationship between this variability and functionalities are not well understood. Here, we showed that the C-terminal domain of hemocyanin (HMC) from shrimp Litopenaeus vannamei contained an evolutionary conserved domain with highly variable genetic sequence, which is structurally homologous to immunoglobulin (Ig). This domain is responsible for recognizing and binding to bacteria or red blood cells, initiating agglutination and hemolysis. Furthermore, when HMC is separated into three fractions using anti-human IgM, IgG, or IgA, the subpopulation, which reacted with anti-human IgM (HMC-M), showed the most significant antimicrobial activity. The high potency of HMC-M is a consequence of glycosylation, as it contains high abundance of α-d-mannose relative to α-d-glucose and N-acetyl-d-galactosamine. Thus, the removal of these glycans abolished the antimicrobial activity of HMC-M. Our results present a comprehensive investigation of the role of HMC in fighting against infections through genetic variability and epigenetic modification.
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Affiliation(s)
- Yue-Ling Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Bo Peng
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Hui Li
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Fang Yan
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Hong-Kai Wu
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Xian-Liang Zhao
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Xiang-Min Lin
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Shao-Ying Min
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Yuan-Yuan Gao
- School of Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - San-Ying Wang
- School of Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - Yuan-You Li
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Xuan-Xian Peng
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
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116
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Aretz J, Baukmann H, Shanina E, Hanske J, Wawrzinek R, Zapol'skii VA, Seeberger PH, Kaufmann DE, Rademacher C. Identifikation sekundärer Bindestellen auf DC-SIGN mithilfe eines Fragment-Screenings. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701943] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jonas Aretz
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
| | - Hannes Baukmann
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
| | - Elena Shanina
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
| | - Jonas Hanske
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
| | - Robert Wawrzinek
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
| | - Viktor A. Zapol'skii
- Institut für Organische Chemie; Technische Universität Clausthal; Leibnizstraße 6 38678 Clausthal-Zellerfeld Deutschland
| | - Peter H. Seeberger
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
| | - Dieter E. Kaufmann
- Institut für Organische Chemie; Technische Universität Clausthal; Leibnizstraße 6 38678 Clausthal-Zellerfeld Deutschland
| | - Christoph Rademacher
- Abteilung für Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; Am Mühlenberg 1 14476 Potsdam Deutschland
- Fachbereich für Biologie, Chemie und Pharmazie; Freie Universität Berlin; Takustraße 3 14195 Berlin Deutschland
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117
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Aretz J, Baukmann H, Shanina E, Hanske J, Wawrzinek R, Zapol'skii VA, Seeberger PH, Kaufmann DE, Rademacher C. Identification of Multiple Druggable Secondary Sites by Fragment Screening against DC-SIGN. Angew Chem Int Ed Engl 2017; 56:7292-7296. [PMID: 28523851 DOI: 10.1002/anie.201701943] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/28/2017] [Indexed: 01/08/2023]
Abstract
DC-SIGN is a cell-surface receptor for several pathogenic threats, such as HIV, Ebola virus, or Mycobacterium tuberculosis. Multiple attempts to develop inhibitors of the underlying carbohydrate-protein interactions have been undertaken in the past fifteen years. Still, drug-like DC-SIGN ligands are sparse, which is most likely due to its hydrophilic, solvent-exposed carbohydrate-binding site. Herein, we report on a parallel fragment screening against DC-SIGN applying SPR and a reporter displacement assay, which complements previous screenings using 19 F NMR spectroscopy and chemical fragment microarrays. Hit validation by SPR and 1 H-15 N HSQC NMR spectroscopy revealed that although no fragment bound in the primary carbohydrate site, five secondary sites are available to harbor drug-like molecules. Building on key interactions of the reported fragment hits, these pockets will be targeted in future approaches to accelerate the development of DC-SIGN inhibitors.
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Affiliation(s)
- Jonas Aretz
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| | - Hannes Baukmann
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| | - Elena Shanina
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| | - Jonas Hanske
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| | - Robert Wawrzinek
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Viktor A Zapol'skii
- Institut für Organische Chemie, Technische Universität Clausthal, Leibnizstrasse 6, 38678, Clausthal-Zellerfeld, Germany
| | - Peter H Seeberger
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| | - Dieter E Kaufmann
- Institut für Organische Chemie, Technische Universität Clausthal, Leibnizstrasse 6, 38678, Clausthal-Zellerfeld, Germany
| | - Christoph Rademacher
- Abteilung für Biomolekulare Systeme, Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476, Potsdam, Germany.,Fachbereich für Biologie, Chemie und Pharmazie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
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118
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Fasciola hepatica glycoconjugates immuneregulate dendritic cells through the Dendritic Cell-Specific Intercellular adhesion molecule-3-Grabbing Non-integrin inducing T cell anergy. Sci Rep 2017; 7:46748. [PMID: 28436457 PMCID: PMC5402274 DOI: 10.1038/srep46748] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/24/2017] [Indexed: 12/25/2022] Open
Abstract
Dendritic cell-specific ICAM-3 grabbing non-integrin (DC-SIGN) expressed on a variety of DCs, is a C-type lectin receptor that recognizes glycans on a diverse range of pathogens, including parasites. The interaction of DC-SIGN with pathogens triggers specific signaling events that modulate DC-maturation and activity and regulate T-cell activation by DCs. In this work we evaluate whether F. hepatica glycans can immune modulate DCs via DC-SIGN. We demonstrate that DC-SIGN interacts with F. hepatica glycoconjugates through mannose and fucose residues. We also show that mannose is present in high-mannose structures, hybrid and trimannosyl N-glycans with terminal GlcNAc. Furthermore, we demonstrate that F. hepatica glycans induce DC-SIGN triggering leading to a strong production of TLR-induced IL-10 and IL-27p28. In addition, parasite glycans induced regulatory DCs via DC-SIGN that decrease allogeneic T cell proliferation, via the induction of anergic/regulatory T cells, highlighting the role of DC-SIGN in the regulation of innate and adaptive immune responses by F. hepatica. Our data confirm the immunomodulatory properties of DC-SIGN triggered by pathogen-derived glycans and contribute to the identification of immunomodulatory glyans of helminths that might eventually be useful for the design of vaccines against fasciolosis.
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119
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Shahzad-Ul-Hussan S, Sastry M, Lemmin T, Soto C, Loesgen S, Scott DA, Davison JR, Lohith K, O'Connor R, Kwong PD, Bewley CA. Insights from NMR Spectroscopy into the Conformational Properties of Man-9 and Its Recognition by Two HIV Binding Proteins. Chembiochem 2017; 18:764-771. [PMID: 28166380 PMCID: PMC5557091 DOI: 10.1002/cbic.201600665] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Indexed: 12/12/2022]
Abstract
Man9 GlcNAc2 (Man-9) present at the surface of HIV makes up the binding sites of several HIV-neutralizing agents and the mammalian lectin DC-SIGN, which is involved in cellular immunity and trans-infections. We describe the conformational properties of Man-9 in its free state and when bound by the HIV entry-inhibitor protein microvirin (MVN), and define the minimum epitopes of both MVN and DC-SIGN by using NMR spectroscopy. To facilitate the implementation of 3D 13 C-edited spectra to deconvolute spectral overlap and to determine the solution structure of Man-9, we developed a robust expression system for the production of 13 C,15 N-labeled glycans in mammalian cells. The studies reveal that Man-9 interacts with HIV-binding proteins through distinct epitopes and adopts diverse conformations in the bound state. In combination with molecular dynamics simulations we observed receptor-bound conformations to be sampled by Man-9 in the free state, thus suggesting a conformational selection mechanism for diverse recognition.
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Affiliation(s)
- Syed Shahzad-Ul-Hussan
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
- Structural Biology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
- Present address: Department of Biology, SBA School of Science and Engineering, Lahore University of Management Sciences, Lahore, 54792, Pakistan
| | - Mallika Sastry
- Structural Biology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
| | - Thomas Lemmin
- Structural Biology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
- Structural Bioinformatics Core Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
| | - Cinque Soto
- Structural Biology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
- Structural Bioinformatics Core Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
| | - Sandra Loesgen
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
| | - Danielle A Scott
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
| | - Jack R Davison
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
| | - Katheryn Lohith
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
| | - Robert O'Connor
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
| | - Peter D Kwong
- Structural Biology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
- Structural Bioinformatics Core Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, 40 Convent Drive, Bethesda, MD, 20892, USA
| | - Carole A Bewley
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, 8 Center Drive, Bethesda, MD, 20892, USA
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120
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Cote R, Lynn Eggink L, Kenneth Hoober J. CLEC receptors, endocytosis and calcium signaling. AIMS ALLERGY AND IMMUNOLOGY 2017. [DOI: 10.3934/allergy.2017.4.207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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121
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Brument S, Cheneau C, Brissonnet Y, Deniaud D, Halary F, Gouin SG. Polymeric mannosides prevent DC-SIGN-mediated cell-infection by cytomegalovirus. Org Biomol Chem 2017; 15:7660-7671. [DOI: 10.1039/c7ob01569k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dextrans coated with triazolylheptylmannoside ligands block human cytomegalovirus trans-infection at picomolar polymer concentrations.
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Affiliation(s)
- S. Brument
- LUNAM Université
- CEISAM
- Chimie Et Interdisciplinarité
- Synthèse
- Analyse
| | - C. Cheneau
- Centre de Recherche en Transplantation et Immunologie UMR 1064
- INSERM
- Université de Nantes
- Nantes
- France
| | - Y. Brissonnet
- LUNAM Université
- CEISAM
- Chimie Et Interdisciplinarité
- Synthèse
- Analyse
| | - D. Deniaud
- LUNAM Université
- CEISAM
- Chimie Et Interdisciplinarité
- Synthèse
- Analyse
| | - F. Halary
- Centre de Recherche en Transplantation et Immunologie UMR 1064
- INSERM
- Université de Nantes
- Nantes
- France
| | - S. G. Gouin
- LUNAM Université
- CEISAM
- Chimie Et Interdisciplinarité
- Synthèse
- Analyse
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122
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Ding D, Yao Y, Zhang S, Su C, Zhang Y. C-type lectins facilitate tumor metastasis. Oncol Lett 2016; 13:13-21. [PMID: 28123516 PMCID: PMC5245148 DOI: 10.3892/ol.2016.5431] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/07/2016] [Indexed: 12/13/2022] Open
Abstract
Metastasis, a life-threatening complication of cancer, leads to the majority of cases of cancer-associated mortality. Unfortunately, the underlying molecular and cellular mechanisms of cancer metastasis remain to be fully elucidated. C-type lectins are a large group of proteins, which share structurally homologous carbohydrate-recognition domains (CRDs) and possess diverse physiological functions, including inflammation and antimicrobial immunity. Accumulating evidence has demonstrated the contribution of C-type lectins in different steps of the metastatic spread of cancer. Notably, a substantial proportion of C-type lectins, including selectins, mannose receptor (MR) and liver and lymph node sinusoidal endothelial cell C-type lectin, are important molecular targets for the formation of metastases in vitro and in vivo. The present review summarizes what has been found regarding C-type lectins in the lymphatic and hematogenous metastasis of cancer. An improved understanding the role of C-type lectins in cancer metastasis provides a comprehensive perspective for further clarifying the molecular mechanisms of cancer metastasis and supports the development of novel C-type lectins-based therapies the for prevention of metastasis in certain types of cancer.
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Affiliation(s)
- Dongbing Ding
- Department of Gastrointestinal Surgery, Jingmen First People's Hospital, Jingmen, Hubei 448000, P.R. China
| | - Yao Yao
- Department of Ophthalmology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Songbai Zhang
- Department of Gastrointestinal Surgery, Jingmen First People's Hospital, Jingmen, Hubei 448000, P.R. China
| | - Chunjie Su
- Department of Gastrointestinal Surgery, Jingmen First People's Hospital, Jingmen, Hubei 448000, P.R. China
| | - Yonglian Zhang
- Department of Gastrointestinal Surgery, Jingmen First People's Hospital, Jingmen, Hubei 448000, P.R. China
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123
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Bertolotti B, Oroszová B, Sutkeviciute I, Kniežo L, Fieschi F, Parkan K, Lovyová Z, Kašáková M, Moravcová J. Nonhydrolyzable C-disaccharides, a new class of DC-SIGN ligands. Carbohydr Res 2016; 435:7-18. [DOI: 10.1016/j.carres.2016.09.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 01/01/2023]
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124
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Akatsu C, Shinagawa K, Numoto N, Liu Z, Ucar AK, Aslam M, Phoon S, Adachi T, Furukawa K, Ito N, Tsubata T. CD72 negatively regulates B lymphocyte responses to the lupus-related endogenous toll-like receptor 7 ligand Sm/RNP. J Exp Med 2016; 213:2691-2706. [PMID: 27810925 PMCID: PMC5110020 DOI: 10.1084/jem.20160560] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 08/05/2016] [Accepted: 09/26/2016] [Indexed: 01/03/2023] Open
Abstract
Akatsu and colleagues show that CD72 specifically recognizes Sm/RNP, a lupus-related self-antigen and an endogenous TLR7 ligand, and inhibits B cell responses to Sm/RNP. In mice, CD72 prevents production of anti-Sm/RNP antibodies crucial for lupus development. Toll-like receptor 7 (TLR7) plays an essential role in development of systemic lupus erythematosus by co-stimulating B cells reactive to the endogenous TLR7 ligand Sm/ribonucleoprotein (RNP), a crucial lupus self-antigen. However, how the TLR7-mediated autoimmune response is regulated is not yet known. In this study, we demonstrate that CD72, an inhibitory B cell co-receptor known to prevent development of lupus, recognizes Sm/RNP at the extracellular C-type lectin-like domain (CTLD) and specifically inhibits B cell response to Sm/RNP. Moreover, the CTLD of CD72c, a lupus-susceptible allele, binds to Sm/RNP less strongly than that of lupus-resistant CD72a. Reduced binding of CD72c is supported by x-ray crystallographic analysis that reveals a considerable alteration in charge at the putative ligand-binding site. Thus, CD72 appears to specifically inhibit B cell response to the endogenous TLR7 ligand Sm/RNP through CTLD-mediated recognition of Sm/RNP, thereby preventing production of anti-Sm/RNP antibody crucial for development of lupus.
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Affiliation(s)
- Chizuru Akatsu
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Kenro Shinagawa
- Department of Structural Biology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Nobutaka Numoto
- Department of Structural Biology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Zhihong Liu
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan.,Emergency Department, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110001, China
| | - Ayse Konuskan Ucar
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Mohammad Aslam
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Shirly Phoon
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Takahiro Adachi
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Koji Furukawa
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8566, Japan
| | - Nobutoshi Ito
- Department of Structural Biology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
| | - Takeshi Tsubata
- Department of Immunology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo, Tokyo 113-8510, Japan
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125
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Horie T, Inomata M, Into T, Hasegawa Y, Kitai N, Yoshimura F, Murakami Y. Identification of OmpA-Like Protein of Tannerella forsythia as an O-Linked Glycoprotein and Its Binding Capability to Lectins. PLoS One 2016; 11:e0163974. [PMID: 27711121 PMCID: PMC5053532 DOI: 10.1371/journal.pone.0163974] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/16/2016] [Indexed: 11/22/2022] Open
Abstract
Bacterial glycoproteins are associated with physiological and pathogenic functions of bacteria. It remains unclear whether bacterial glycoproteins can bind to specific classes of lectins expressed on host cells. Tannerella forsythia is a gram-negative oral anaerobe that contributes to the development of periodontitis. In this study, we aimed to find lectin-binding glycoproteins in T. forsythia. We performed affinity chromatography of wheat germ agglutinin, which binds to N-acetylglucosamine (GlcNAc) and sialic acid (Sia), and identified OmpA-like protein as the glycoprotein that has the highest affinity. Mass spectrometry revealed that OmpA-like protein contains O-type N-acetylhexosamine and hexose. Fluorometry quantitatively showed that OmpA-like protein contains Sia. OmpA-like protein was found to bind to lectins including E-selectin, P-selectin, L-selectin, Siglec-5, Siglec-9, Siglec-10, and DC-SIGN. The binding of OmpA-like protein to these lectins, except for the Siglecs, depends on the presence of calcium. N-acetylneuraminic acid (NeuAc), which is the most abundant Sia, inhibited the binding of OmpA-like protein to all of these lectins, whereas GlcNAc and mannose only inhibited the binding to DC-SIGN. We further found that T. forsythia adhered to human oral epithelial cells, which express E-selectin and P-selectin, and that this adhesion was inhibited by addition of NeuAc. Moreover, adhesion of an OmpA-like protein-deficient T. forsythia strain to the cells was reduced compared to that of the wild-type strain. Our findings indicate that OmpA-like protein of T. forsythia contains O-linked sugar chains that can mediate interactions with specific lectins. This interaction is suggested to facilitate adhesion of T. forsythia to the surface of host cells.
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Affiliation(s)
- Toshi Horie
- Department of Oral Microbiology, Division of Oral Infections and Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
- Department of Orthodontics, Division of Oral Structure, Function and Development, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - Megumi Inomata
- Department of Oral Microbiology, Division of Oral Infections and Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
- * E-mail:
| | - Takeshi Into
- Department of Oral Microbiology, Division of Oral Infections and Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - Yoshiaki Hasegawa
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Noriyuki Kitai
- Department of Orthodontics, Division of Oral Structure, Function and Development, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - Fuminobu Yoshimura
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Yukitaka Murakami
- Department of Oral Microbiology, Division of Oral Infections and Health Sciences, Asahi University School of Dentistry, Mizuho, Gifu, Japan
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126
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Feinberg H, Rambaruth NDS, Jégouzo SAF, Jacobsen KM, Djurhuus R, Poulsen TB, Weis WI, Taylor ME, Drickamer K. Binding Sites for Acylated Trehalose Analogs of Glycolipid Ligands on an Extended Carbohydrate Recognition Domain of the Macrophage Receptor Mincle. J Biol Chem 2016; 291:21222-21233. [PMID: 27542410 PMCID: PMC5076529 DOI: 10.1074/jbc.m116.749515] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Indexed: 11/29/2022] Open
Abstract
The macrophage receptor mincle binds to trehalose dimycolate on the surface of Mycobacterium tuberculosis. Signaling initiated by this interaction leads to cytokine production, which underlies the ability of mycobacteria to evade the immune system and also to function as adjuvants. In previous work the mechanism for binding of the sugar headgroup of trehalose dimycolate to mincle has been elucidated, but the basis for enhanced binding to glycolipid ligands, in which hydrophobic substituents are attached to the 6-hydroxyl groups, has been the subject of speculation. In the work reported here, the interaction of trehalose derivatives with bovine mincle has been probed with a series of synthetic mimics of trehalose dimycolate in binding assays, in structural studies by x-ray crystallography, and by site-directed mutagenesis. Binding studies reveal that, rather than reflecting specific structural preference, the apparent affinity of mincle for ligands with hydrophobic substituents correlates with their overall size. Structural and mutagenesis analysis provides evidence for interaction of the hydrophobic substituents with multiple different portions of the surface of mincle and confirms the presence of three Ca2+-binding sites. The structure of an extended portion of the extracellular domain of mincle, beyond the minimal C-type carbohydrate recognition domain, also constrains the way the binding domains may interact on the surface of macrophages.
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Affiliation(s)
- Hadar Feinberg
- From the Departments of Structural Biology and Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305
| | - Neela D S Rambaruth
- the Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom, and
| | - Sabine A F Jégouzo
- the Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom, and
| | - Kristian M Jacobsen
- Chemical Biology Laboratory, Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - Rasmus Djurhuus
- Chemical Biology Laboratory, Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - Thomas B Poulsen
- Chemical Biology Laboratory, Department of Chemistry, Aarhus University, DK-8000 Aarhus, Denmark
| | - William I Weis
- From the Departments of Structural Biology and Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305
| | - Maureen E Taylor
- the Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom, and
| | - Kurt Drickamer
- the Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom, and
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127
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Le NPL, Bowden TA, Struwe WB, Crispin M. Immune recruitment or suppression by glycan engineering of endogenous and therapeutic antibodies. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1860:1655-68. [PMID: 27105835 PMCID: PMC4922387 DOI: 10.1016/j.bbagen.2016.04.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/15/2016] [Accepted: 04/16/2016] [Indexed: 12/20/2022]
Abstract
Human serum IgG contains multiple glycoforms which exhibit a range of binding properties to effector molecules such as cellular Fc receptors. Emerging knowledge of how the Fc glycans contribute to the antibody structure and effector functions has opened new avenues for the exploitation of defined antibody glycoforms in the treatment of diseases. Here, we review the structure and activity of antibody glycoforms and highlight developments in antibody glycoengineering by both the manipulation of the cellular glycosylation machinery and by chemoenzymatic synthesis. We discuss wide ranging applications of antibody glycoengineering in the treatment of cancer, autoimmunity and inflammation. This article is part of a Special Issue entitled "Glycans in personalised medicine" Guest Editor: Professor Gordan Lauc.
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Affiliation(s)
- Ngoc Phuong Lan Le
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom
| | - Thomas A Bowden
- Division of Structural Biology, University of Oxford, Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, United Kingdom
| | - Weston B Struwe
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom
| | - Max Crispin
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.
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128
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Otten L, Vlachou D, Richards SJ, Gibson MI. Glycan heterogeneity on gold nanoparticles increases lectin discrimination capacity in label-free multiplexed bioassays. Analyst 2016; 141:4305-12. [PMID: 27181289 PMCID: PMC4934645 DOI: 10.1039/c6an00549g] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of new analytical tools as point-of-care biosensors is crucial to combat the spread of infectious diseases, especially in the context of drug-resistant organisms, or to detect biological warfare agents. Glycan/lectin interactions drive a wide range of recognition and signal transduction processes within nature and are often the first site of adhesion/recognition during infection making them appealing targets for biosensors. Glycosylated gold nanoparticles have been developed that change colour from red to blue upon interaction with carbohydrate-binding proteins and may find use as biosensors, but are limited by the inherent promiscuity of some of these interactions. Here we mimic the natural heterogeneity of cell-surface glycans by displaying mixed monolayers of glycans on the surface of gold nanoparticles. These are then used in a multiplexed, label-free bioassay to create 'barcodes' which describe the lectin based on its binding profile. The increased information content encoded by using complex mixtures of a few sugars, rather than increased numbers of different sugars makes this approach both scalable and accessible. These nanoparticles show increased lectin identification power at a range of lectin concentrations, relative to single-channel sensors. It was also found that some information about the concentration of the lectins can be extracted, all from just a simple colour change, taking this technology closer to being a realistic biosensor.
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Affiliation(s)
- Lucienne Otten
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | - Denise Vlachou
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Sarah-Jane Richards
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
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129
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The Role of Phlebovirus Glycoproteins in Viral Entry, Assembly and Release. Viruses 2016; 8:v8070202. [PMID: 27455305 PMCID: PMC4974537 DOI: 10.3390/v8070202] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 01/08/2023] Open
Abstract
Bunyaviruses are enveloped viruses with a tripartite RNA genome that can pose a serious threat to animal and human health. Members of the Phlebovirus genus of the family Bunyaviridae are transmitted by mosquitos and ticks to humans and include highly pathogenic agents like Rift Valley fever virus (RVFV) and severe fever with thrombocytopenia syndrome virus (SFTSV) as well as viruses that do not cause disease in humans, like Uukuniemi virus (UUKV). Phleboviruses and other bunyaviruses use their envelope proteins, Gn and Gc, for entry into target cells and for assembly of progeny particles in infected cells. Thus, binding of Gn and Gc to cell surface factors promotes viral attachment and uptake into cells and exposure to endosomal low pH induces Gc-driven fusion of the viral and the vesicle membranes. Moreover, Gn and Gc facilitate virion incorporation of the viral genome via their intracellular domains and Gn and Gc interactions allow the formation of a highly ordered glycoprotein lattice on the virion surface. Studies conducted in the last decade provided important insights into the configuration of phlebovirus Gn and Gc proteins in the viral membrane, the cellular factors used by phleboviruses for entry and the mechanisms employed by phlebovirus Gc proteins for membrane fusion. Here, we will review our knowledge on the glycoprotein biogenesis and the role of Gn and Gc proteins in the phlebovirus replication cycle.
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130
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Woodham AW, Skeate JG, Sanna AM, Taylor JR, Da Silva DM, Cannon PM, Kast WM. Human Immunodeficiency Virus Immune Cell Receptors, Coreceptors, and Cofactors: Implications for Prevention and Treatment. AIDS Patient Care STDS 2016; 30:291-306. [PMID: 27410493 DOI: 10.1089/apc.2016.0100] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In the last three decades, extensive research on human immunodeficiency virus (HIV) has highlighted its capability to exploit a variety of strategies to enter and infect immune cells. Although CD4(+) T cells are well known as the major HIV target, with infection occurring through the canonical combination of the cluster of differentiation 4 (CD4) receptor and either the C-C chemokine receptor type 5 (CCR5) or C-X-C chemokine receptor type 4 (CXCR4) coreceptors, HIV has also been found to enter other important immune cell types such as macrophages, dendritic cells, Langerhans cells, B cells, and granulocytes. Interestingly, the expression of distinct cellular cofactors partially regulates the rate in which HIV infects each distinct cell type. Furthermore, HIV can benefit from the acquisition of new proteins incorporated into its envelope during budding events. While several publications have investigated details of how HIV manipulates particular cell types or subtypes, an up-to-date comprehensive review on HIV tropism for different immune cells is lacking. Therefore, this review is meant to focus on the different receptors, coreceptors, and cofactors that HIV exploits to enter particular immune cells. Additionally, prophylactic approaches that have targeted particular molecules associated with HIV entry and infection of different immune cells will be discussed. Unveiling the underlying cellular receptors and cofactors that lead to HIV preference for specific immune cell populations is crucial in identifying novel preventative/therapeutic targets for comprehensive strategies to eliminate viral infection.
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Affiliation(s)
- Andrew W. Woodham
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California
| | - Joseph G. Skeate
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California
| | - Adriana M. Sanna
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Julia R. Taylor
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California
| | - Diane M. Da Silva
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
- Department of Obstetrics & Gynecology, University of Southern California, Los Angeles, California
| | - Paula M. Cannon
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California
| | - W. Martin Kast
- Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles, California
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
- Department of Obstetrics & Gynecology, University of Southern California, Los Angeles, California
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131
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The human fetoembryonic defense system hypothesis: Twenty years on. Mol Aspects Med 2016; 51:71-88. [PMID: 27349751 DOI: 10.1016/j.mam.2016.06.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 06/13/2016] [Accepted: 06/21/2016] [Indexed: 11/21/2022]
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132
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Sattin S, Bernardi A. Glycoconjugates and Glycomimetics as Microbial Anti-Adhesives. Trends Biotechnol 2016; 34:483-495. [DOI: 10.1016/j.tibtech.2016.01.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 01/15/2016] [Accepted: 01/15/2016] [Indexed: 12/31/2022]
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133
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Richards SJ, Otten L, Gibson MI. Glycosylated gold nanoparticle libraries for label-free multiplexed lectin biosensing. J Mater Chem B 2016; 4:3046-3053. [PMID: 27162639 PMCID: PMC4859411 DOI: 10.1039/c5tb01994j] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 10/26/2015] [Indexed: 11/21/2022]
Abstract
Glycan/lectin interactions drive a wide range of recognition and signal transduction processes within nature. However, their measurement is complicated or limited by the analytical tools available. Most technologies require fluorescently labelled proteins (e.g. microarrays) or expensive infrastructure (such as surface plasmon resonance). This also limits their application in biosensing, especially for low-resource settings, where detection of pathogens based on glycan binding could speed up diagnosis. Here we employ a library-oriented approach to immobilise a range of monosaccharides onto polymer-stabilised gold nanoparticles to enable rapid and high-throughput evaluation of their binding specificities with a panel of lectins. The red to blue colour shift upon gold nanoparticle aggregation is used as the output, removing the need for labelled protein, enabling compatibility with 96-well microplates. Furthermore, we demonstrate the use of a flatbed scanner (or digital camera) to extract biophysical data, ensuring that only minimal resources are required. Finally, linear discriminant analysis is employed to demonstrate how the glyconanoparticles can be applied as a multiplexed biosensor capable of identifying pathogenic lectins without the need for any infrastructure and overcoming some of the issues of lectin promiscuity.
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Affiliation(s)
- Sarah-Jane Richards
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK . ; Fax: +44 (0)2476 524112
| | - Lucienne Otten
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK . ; Fax: +44 (0)2476 524112
| | - Matthew I. Gibson
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK . ; Fax: +44 (0)2476 524112
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134
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Loke I, Kolarich D, Packer NH, Thaysen-Andersen M. Emerging roles of protein mannosylation in inflammation and infection. Mol Aspects Med 2016; 51:31-55. [PMID: 27086127 DOI: 10.1016/j.mam.2016.04.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/05/2016] [Accepted: 04/10/2016] [Indexed: 02/07/2023]
Abstract
Proteins are frequently modified by complex carbohydrates (glycans) that play central roles in maintaining the structural and functional integrity of cells and tissues in humans and lower organisms. Mannose forms an essential building block of protein glycosylation, and its functional involvement as components of larger and diverse α-mannosidic glycoepitopes in important intra- and intercellular glycoimmunological processes is gaining recognition. With a focus on the mannose-rich asparagine (N-linked) glycosylation type, this review summarises the increasing volume of literature covering human and non-human protein mannosylation, including their structures, biosynthesis and spatiotemporal expression. The review also covers their known interactions with specialised host and microbial mannose-recognising C-type lectin receptors (mrCLRs) and antibodies (mrAbs) during inflammation and pathogen infection. Advances in molecular mapping technologies have recently revealed novel immuno-centric mannose-terminating truncated N-glycans, termed paucimannosylation, on human proteins. The cellular presentation of α-mannosidic glycoepitopes on N-glycoproteins appears tightly regulated; α-mannose determinants are relative rare glycoepitopes in physiological extracellular environments, but may be actively secreted or leaked from cells to transmit potent signals when required. Simultaneously, our understanding of the molecular basis on the recognition of mannosidic epitopes by mrCLRs including DC-SIGN, mannose receptor, mannose binding lectin and mrAb is rapidly advancing, together with the functional implications of these interactions in facilitating an effective immune response during physiological and pathophysiological conditions. Ultimately, deciphering these complex mannose-based receptor-ligand interactions at the detailed molecular level will significantly advance our understanding of immunological disorders and infectious diseases, promoting the development of future therapeutics to improve patient clinical outcomes.
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Affiliation(s)
- Ian Loke
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Daniel Kolarich
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Nicolle H Packer
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Morten Thaysen-Andersen
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
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135
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Zhang H, Palma AS, Zhang Y, Childs RA, Liu Y, Mitchell DA, Guidolin LS, Weigel W, Mulloy B, Ciocchini AE, Feizi T, Chai W. Generation and characterization of β1,2-gluco-oligosaccharide probes from Brucella abortus cyclic β-glucan and their recognition by C-type lectins of the immune system. Glycobiology 2016; 26:1086-1096. [PMID: 27053576 PMCID: PMC5072146 DOI: 10.1093/glycob/cww041] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/17/2016] [Accepted: 03/24/2016] [Indexed: 12/16/2022] Open
Abstract
The β1,2-glucans produced by bacteria are important in invasion, survival and immunomodulation in infected hosts be they mammals or plants. However, there has been a lack of information on proteins which recognize these molecules. This is partly due to the extremely limited availability of the sequence-defined oligosaccharides and derived probes for use in the study of their interactions. Here we have used the cyclic β1,2-glucan (CβG) of the bacterial pathogen Brucella abortus, after removal of succinyl side chains, to prepare linearized oligosaccharides which were used to generate microarrays. We describe optimized conditions for partial depolymerization of the cyclic glucan by acid hydrolysis and conversion of the β1,2-gluco-oligosaccharides, with degrees of polymerization 2-13, to neoglycolipids for the purpose of generating microarrays. By microarray analyses, we show that the C-type lectin receptor DC-SIGNR, like the closely related DC-SIGN we investigated earlier, binds to the β1,2-gluco-oligosaccharides, as does the soluble immune effector serum mannose-binding protein. Exploratory studies with DC-SIGN are suggestive of the recognition also of the intact CβG by this receptor. These findings open the way to unravelling mechanisms of immunomodulation mediated by β1,2-glucans in mammalian systems.
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Affiliation(s)
- Hongtao Zhang
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK.,Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Angelina S Palma
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK .,UCIBIO-REQUIMTE, Department of Chemistry, Faculty of Science and Technology, NOVA Universidade de Lisboa, Caparica 2829-516, Portugal
| | - Yibing Zhang
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Robert A Childs
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Yan Liu
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Daniel A Mitchell
- CSRI-UHCW, Walsgrave Campus, University of Warwick, Coventry CV2 2DX, UK
| | - Leticia S Guidolin
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín, San Martín, Buenos Aires 1650, Argentina
| | | | - Barbara Mulloy
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Andrés E Ciocchini
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo A. Ugalde", Instituto Tecnológico de Chascomús (IIB-INTECH), Universidad Nacional de San Martín, San Martín, Buenos Aires 1650, Argentina
| | - Ten Feizi
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
| | - Wengang Chai
- Glycosciences Laboratory, Department of Medicine, Imperial College London, London W12 0NN, UK
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136
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Guo Y, Sakonsinsiri C, Nehlmeier I, Fascione MA, Zhang H, Wang W, Pöhlmann S, Turnbull WB, Zhou D. Compact, Polyvalent Mannose Quantum Dots as Sensitive, Ratiometric FRET Probes for Multivalent Protein-Ligand Interactions. Angew Chem Int Ed Engl 2016; 55:4738-42. [PMID: 26990806 PMCID: PMC4979658 DOI: 10.1002/anie.201600593] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 12/22/2022]
Abstract
A highly efficient cap-exchange approach for preparing compact, dense polyvalent mannose-capped quantum dots (QDs) has been developed. The resulting QDs have been successfully used to probe multivalent interactions of HIV/Ebola receptors DC-SIGN and DC-SIGNR (collectively termed as DC-SIGN/R) using a sensitive, ratiometric Förster resonance energy transfer (FRET) assay. The QD probes specifically bind DC-SIGN, but not its closely related receptor DC-SIGNR, which is further confirmed by its specific blocking of DC-SIGN engagement with the Ebola virus glycoprotein. Tuning the QD surface mannose valency reveals that DC-SIGN binds more efficiently to densely packed mannosides. A FRET-based thermodynamic study reveals that the binding is enthalpy-driven. This work establishes QD FRET as a rapid, sensitive technique for probing structure and thermodynamics of multivalent protein-ligand interactions.
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Affiliation(s)
- Yuan Guo
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK.
| | - Chadamas Sakonsinsiri
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Inga Nehlmeier
- Infection Biology Unit, German Primate Center, Kellnerweg 4, 37077, Göttingen, Germany
| | - Martin A Fascione
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Haiyan Zhang
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Weili Wang
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Stefan Pöhlmann
- Infection Biology Unit, German Primate Center, Kellnerweg 4, 37077, Göttingen, Germany
| | - W Bruce Turnbull
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Dejian Zhou
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK.
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137
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Wang M, Zou X, Tian D, Hu S, Jiang L. Role of Dendritic Cell-Specific ICAM-3-Grabbing Nonintegrin on Dendritic Cells in the Recognition of Hepatitis B Virus. Viral Immunol 2016; 28:331-8. [PMID: 26133046 DOI: 10.1089/vim.2014.0128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Dendritic cell-specific ICAM-3-grabbing nonintegrin (DC-SIGN) is an essential process for virus infection, such as HIV and hepatitis C, and plays a role in immune escape. However, the role of DC-SIGN in hepatitis B virus (HBV) infection is still unknown. The aim of this study was to investigate the role of DC-SIGN in mediating the maturation and activation of dendritic cells (DCs) when infected by HBV. Highly mannosylated HBV particles were obtained by treating HBV-producing HepG2.2.15 cells with the a-mannosidase I-inhibitor kifunensine. Highly mannosylated HBV or wild type HBV was added to infect the DCs of the DC-SIGN gene-silencing group and normal group, respectively. Then, the expression of CDla, CD80, CD83, CD86 and HLA-DR on DCs was detected by flow cytometry, the capacity of stimulating lymphocyte proliferation was tested by MTT assay, the level of IL-12p70 that was released by DCs was measured by enzyme-linked immunosorbent assay, and the expression of the proteins NF-κBp65 and p38 was detected by western blot. Both wild type and highly mannosylated HBV could promote DCs maturation and activation. However, the highly mannosylated HBV could promote DCs immune activation more strongly. The difference in the effect on DCs between the two types of HBV could be eliminated by DC-SIGN gene silencing. DC-SIGN can promote the maturation and activation of DCs when recognized HBV, but wild type HBV can escape recognition by DC-SIGN to a certain extent with the help of demannosylated modification, leading to defective DCs function and chronic HBV infection.
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Affiliation(s)
- Minxin Wang
- 1 Department of Infectious Disease, Huazhong University of Science and Technology , Wuhan, China
| | - Xiaojing Zou
- 2 Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Deying Tian
- 1 Department of Infectious Disease, Huazhong University of Science and Technology , Wuhan, China
| | - Song Hu
- 1 Department of Infectious Disease, Huazhong University of Science and Technology , Wuhan, China
| | - Libin Jiang
- 1 Department of Infectious Disease, Huazhong University of Science and Technology , Wuhan, China
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138
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Guo Y, Sakonsinsiri C, Nehlmeier I, Fascione MA, Zhang H, Wang W, Pöhlmann S, Turnbull WB, Zhou D. Compact, Polyvalent Mannose Quantum Dots as Sensitive, Ratiometric FRET Probes for Multivalent Protein-Ligand Interactions. ACTA ACUST UNITED AC 2016; 128:4816-4820. [PMID: 27563159 PMCID: PMC4979676 DOI: 10.1002/ange.201600593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 12/24/2022]
Abstract
A highly efficient cap-exchange approach for preparing compact, dense polyvalent mannose-capped quantum dots (QDs) has been developed. The resulting QDs have been successfully used to probe multivalent interactions of HIV/Ebola receptors DC-SIGN and DC-SIGNR (collectively termed as DC-SIGN/R) using a sensitive, ratiometric Förster resonance energy transfer (FRET) assay. The QD probes specifically bind DC-SIGN, but not its closely related receptor DC-SIGNR, which is further confirmed by its specific blocking of DC-SIGN engagement with the Ebola virus glycoprotein. Tuning the QD surface mannose valency reveals that DC-SIGN binds more efficiently to densely packed mannosides. A FRET-based thermodynamic study reveals that the binding is enthalpy-driven. This work establishes QD FRET as a rapid, sensitive technique for probing structure and thermodynamics of multivalent protein-ligand interactions.
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Affiliation(s)
- Yuan Guo
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
| | - Chadamas Sakonsinsiri
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
| | - Inga Nehlmeier
- Infection Biology Unit German Primate Center Kellnerweg 4 37077 Göttingen Germany
| | - Martin A Fascione
- Department of Chemistry University of York Heslington York YO10 5DD UK
| | - Haiyan Zhang
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
| | - Weili Wang
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
| | - Stefan Pöhlmann
- Infection Biology Unit German Primate Center Kellnerweg 4 37077 Göttingen Germany
| | - W Bruce Turnbull
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
| | - Dejian Zhou
- School of Chemistry and Astbury Centre for Structural Molecular Biology University of Leeds Leeds LS2 9JT UK
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139
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Schlauch KA, Khaiboullina SF, De Meirleir KL, Rawat S, Petereit J, Rizvanov AA, Blatt N, Mijatovic T, Kulick D, Palotás A, Lombardi VC. Genome-wide association analysis identifies genetic variations in subjects with myalgic encephalomyelitis/chronic fatigue syndrome. Transl Psychiatry 2016; 6:e730. [PMID: 26859813 PMCID: PMC4872418 DOI: 10.1038/tp.2015.208] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 09/28/2015] [Accepted: 11/05/2015] [Indexed: 12/21/2022] Open
Abstract
Myalgic encephalomyelitis, also known as chronic fatigue syndrome or ME/CFS, is a multifactorial and debilitating disease that has an impact on over 4 million people in the United States alone. The pathogenesis of ME/CFS remains largely unknown; however, a genetic predisposition has been suggested. In the present study, we used a DNA single-nucleotide polymorphism (SNP) chip representing over 906,600 known SNPs to analyze DNA from ME/CFS subjects and healthy controls. To the best of our knowledge, this study represents the most comprehensive genome-wide association study (GWAS) of an ME/CFS cohort conducted to date. Here 442 SNPs were identified as candidates for association with ME/CFS (adjusted P-value<0.05). Whereas the majority of these SNPs are represented in non-coding regions of the genome, 12 SNPs were identified in the coding region of their respective gene. Among these, two candidate SNPs resulted in missense substitutions, one in a pattern recognition receptor and the other in an uncharacterized coiled-coil domain-containing protein. We also identified five SNPs that cluster in the non-coding regions of T-cell receptor loci. Further examination of these polymorphisms may help identify contributing factors to the pathophysiology of ME/CFS, as well as categorize potential targets for medical intervention strategies.
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Affiliation(s)
- K A Schlauch
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV, USA
| | - S F Khaiboullina
- Nevada Center for Biomedical Research, University of Nevada, Reno, NV, USA
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - K L De Meirleir
- Nevada Center for Biomedical Research, University of Nevada, Reno, NV, USA
| | - S Rawat
- Nevada Center for Biomedical Research, University of Nevada, Reno, NV, USA
| | - J Petereit
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV, USA
| | - A A Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - N Blatt
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | | | - D Kulick
- Mayo Clinic, Scottsdale, AZ, USA
| | - A Palotás
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
- Asklepios-Med (private medical practice and research center), Szeged, Hungary
| | - V C Lombardi
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV, USA
- Nevada Center for Biomedical Research, University of Nevada, Reno, NV, USA
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140
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Makyio H, Kato R. Classification and Comparison of Fucose-Binding Lectins Based on Their Structures. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1429.1e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hisayoshi Makyio
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science,
High Energy Accelerator Research Organization (KEK)
| | - Ryuichi Kato
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science,
High Energy Accelerator Research Organization (KEK)
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141
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Pustylnikov S, Dave RS, Khan ZK, Porkolab V, Rashad AA, Hutchinson M, Fieschi F, Chaiken I, Jain P. Short Communication: Inhibition of DC-SIGN-Mediated HIV-1 Infection by Complementary Actions of Dendritic Cell Receptor Antagonists and Env-Targeting Virus Inactivators. AIDS Res Hum Retroviruses 2016; 32:93-100. [PMID: 26383762 DOI: 10.1089/aid.2015.0184] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The DC-SIGN receptor on human dendritic cells interacts with HIV gp120 to promote both infection of antigen-presenting cells and transinfection of T cells. We hypothesized that in DC-SIGN-expressing cells, both DC-SIGN ligands such as dextrans and gp120 antagonists such as peptide triazoles would inhibit HIV infection with potential complementary antagonist effects. To test this hypothesis, we evaluated the effects of dextran (D66), isomaltooligosaccharides (D06), and several peptide triazoles (HNG156, K13, and UM15) on HIV infection of B-THP-1/DC-SIGN cells. In surface plasmon resonance competition assays, D66 (IC50 = 35.4 μM) and D06 (IC50 = 3.4 mM) prevented binding of soluble DC-SIGN to immobilized mannosylated bovine serum albumin (BSA). An efficacious dose-dependent inhibition of DC-SIGN-mediated HIV infection in both pretreatment and posttreatment settings was observed, as indicated by inhibitory potentials (EC50) [D66 (8 μM), D06 (48 mM), HNG156 (40 μM), UM15 (100 nM), and K13 (25 nM)]. Importantly, both dextrans and peptide triazoles significantly decreased HIV gag RNA levels [D66 (7-fold), D06 (13-fold), HNG156 (7-fold), K-13 (3-fold), and UM15 (6-fold)]. Interestingly, D06 at the highest effective concentration showed a 14-fold decrease of infection, while its combination with 50 μM HNG156 showed a 26-fold decrease. Hence, these compounds can combine to inactivate the viruses and suppress DC-SIGN-mediated virus-cell interaction that as shown earlier leads to dendritic cell HIV infection and transinfection dependent on the DC-SIGN receptor.
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Affiliation(s)
- Sergey Pustylnikov
- Novosibirsk Tuberculosis Research Institute, Novosibirsk, Russia
- State Research Center of Virology and Biotechnology “Vector,” Koltsovo, Russia
- Department of Microbiology and Immunology, and the Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Rajnish S. Dave
- Department of Microbiology and Immunology, and the Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Zafar K. Khan
- Department of Microbiology and Immunology, and the Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Vanessa Porkolab
- University Grenoble Alpes, Institut de Biologie Structurale, Grenoble, France
- CNRS, IBS, Grenoble, France
- CEA, IBS, Grenoble, France
| | - Adel A. Rashad
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Matthew Hutchinson
- Department of Microbiology and Immunology, and the Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Frank Fieschi
- University Grenoble Alpes, Institut de Biologie Structurale, Grenoble, France
- CNRS, IBS, Grenoble, France
- CEA, IBS, Grenoble, France
| | - Irwin Chaiken
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Pooja Jain
- Department of Microbiology and Immunology, and the Institute for Molecular Medicine & Infectious Disease, Drexel University College of Medicine, Philadelphia, Pennsylvania
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142
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Makyio H, Kato R. Classification and Comparison of Fucose-Binding Lectins Based on Their Structures. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1429.1j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hisayoshi Makyio
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science,
High Energy Accelerator Research Organization (KEK)
| | - Ryuichi Kato
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science,
High Energy Accelerator Research Organization (KEK)
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143
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Guzzi C, Alfarano P, Sutkeviciute I, Sattin S, Ribeiro-Viana R, Fieschi F, Bernardi A, Weiser J, Rojo J, Angulo J, Nieto PM. Detection and quantitative analysis of two independent binding modes of a small ligand responsible for DC-SIGN clustering. Org Biomol Chem 2016; 14:335-44. [DOI: 10.1039/c5ob02025e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Multiple binding modes at the same binding site can explain the higher binding affinity of a pseudotrimannotrioside compared to a pseudomannobioside.
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Affiliation(s)
- C. Guzzi
- Glycosystems Laboratory. Instituto de Investigaciones Químicas (IIQ)/cicCartuja. CSIC/US
- 41092 Sevilla
- Spain
- Dept. of Biotechnology and Biosciences University of Millano-Bicocca Piazza della Scienza 2 20126
- Milan
| | - P. Alfarano
- Anterio Consult & Research GmbH
- Augustaanlage 23 68165 Mannheim
- Germany
| | - I. Sutkeviciute
- Univ. Grenoble Alpes
- Institut de Biologie Structurale (IBS)
- F-38044 Grenoble
- France
- CNRS
| | - S. Sattin
- Dipartimento di Chimica
- Universita’ degli Studi di Milano
- 20133 Milano
- Italy
| | - R. Ribeiro-Viana
- Glycosystems Laboratory. Instituto de Investigaciones Químicas (IIQ)/cicCartuja. CSIC/US
- 41092 Sevilla
- Spain
| | - F. Fieschi
- Univ. Grenoble Alpes
- Institut de Biologie Structurale (IBS)
- F-38044 Grenoble
- France
- CNRS
| | - A. Bernardi
- Dipartimento di Chimica
- Universita’ degli Studi di Milano
- 20133 Milano
- Italy
| | - J. Weiser
- Anterio Consult & Research GmbH
- Augustaanlage 23 68165 Mannheim
- Germany
| | - J. Rojo
- Glycosystems Laboratory. Instituto de Investigaciones Químicas (IIQ)/cicCartuja. CSIC/US
- 41092 Sevilla
- Spain
| | - J. Angulo
- Glycosystems Laboratory. Instituto de Investigaciones Químicas (IIQ)/cicCartuja. CSIC/US
- 41092 Sevilla
- Spain
- School of Pharmacy
- University of East Anglia
| | - P. M. Nieto
- Glycosystems Laboratory. Instituto de Investigaciones Químicas (IIQ)/cicCartuja. CSIC/US
- 41092 Sevilla
- Spain
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144
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Arsov Z, Švajger U, Mravljak J, Pajk S, Kotar A, Urbančič I, Štrancar J, Anderluh M. Internalization and Accumulation in Dendritic Cells of a Small pH-Activatable Glycomimetic Fluorescent Probe as Revealed by Spectral Detection. Chembiochem 2015; 16:2660-7. [DOI: 10.1002/cbic.201500376] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Zoran Arsov
- Laboratory of Biophysics; Department of Condensed Matter Physics; Jozef Stefan Institute; Jamova 39 1000 Ljubljana Slovenia
- Center of Excellence NAMASTE; Jamova 39 1000 Ljubljana Slovenia
| | - Urban Švajger
- Blood Transfusion Centre of Slovenia; Šlajmerjeva 6 1000 Ljubljana Slovenia
| | - Janez Mravljak
- Department of Medicinal Chemistry; Faculty of Pharmacy; University of Ljubljana; Aškerčeva 7 1000 Ljubljana Slovenia
| | - Stane Pajk
- Department of Medicinal Chemistry; Faculty of Pharmacy; University of Ljubljana; Aškerčeva 7 1000 Ljubljana Slovenia
- Laboratory of Biophysics; Department of Condensed Matter Physics; Jozef Stefan Institute; Jamova 39 1000 Ljubljana Slovenia
| | - Anita Kotar
- Department of Medicinal Chemistry; Faculty of Pharmacy; University of Ljubljana; Aškerčeva 7 1000 Ljubljana Slovenia
- Slovenian NMR Centre; National Institute of Chemistry; Hajdrihova 19 1000 Ljubljana Slovenia
| | - Iztok Urbančič
- Laboratory of Biophysics; Department of Condensed Matter Physics; Jozef Stefan Institute; Jamova 39 1000 Ljubljana Slovenia
| | - Janez Štrancar
- Laboratory of Biophysics; Department of Condensed Matter Physics; Jozef Stefan Institute; Jamova 39 1000 Ljubljana Slovenia
- Center of Excellence NAMASTE; Jamova 39 1000 Ljubljana Slovenia
| | - Marko Anderluh
- Department of Medicinal Chemistry; Faculty of Pharmacy; University of Ljubljana; Aškerčeva 7 1000 Ljubljana Slovenia
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145
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Jiang L, Hu S, Tian D, Zou X, He M. α-Mannosidase I Protein Expression in Peripheral Blood Mononuclear Cells Is Upregulated During Hepatitis B Virus Infection. Viral Immunol 2015; 29:33-9. [PMID: 26569026 DOI: 10.1089/vim.2015.0079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Hepatitis B virus (HBV) has been reported to be recognized by dendritic cell-specific ICAM-3-grabbing nonintegrin in the presence of the α-mannosidase I inhibitor kifunensine, whereas native HBV is not. The aim of our study was to determine whether changes in α-mannosidase I expression in peripheral blood mononuclear cells (PBMCs) occur in patients with HBV infection. Peripheral blood was collected from 90 HBV-infected patients (grouped into immune tolerance, chronic hepatitis B, or inactive carrier group based on their clinical states) and 30 healthy donors. Expression of the three α-mannosidase I subtypes, MAN1A1, MAN1A2, and MAN1C1, was measured using western blot analyses. Compared with the healthy controls, significant increases in the MAN1A1, MAN1A2, and MAN1C1 expression levels were observed in the three HBV-infected groups, among whom the immune tolerance group showed the largest increase. For the patients in the immune tolerance phase, the expression levels of both MAN1A1 and MAN1A2 were linearly and positively correlated with the hepatitis B e antigen (HBeAg) titer and HBV DNA level, although a positive correlation was only found between MAN1C1 expression and the HBeAg titer. These results indicate that increased α-mannosidase I expression in PBMCs may play an important role in HBV immune escape and that its expression level is closely related to viral replication activity.
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Affiliation(s)
- Libin Jiang
- 1 Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Song Hu
- 1 Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Deying Tian
- 1 Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Xiaojing Zou
- 2 Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
| | - Man He
- 1 Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China
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146
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Carbohydrate Microarrays Identify Blood Group Precursor Cryptic Epitopes as Potential Immunological Targets of Breast Cancer. J Immunol Res 2015; 2015:510810. [PMID: 26539555 PMCID: PMC4619957 DOI: 10.1155/2015/510810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 08/01/2015] [Accepted: 08/06/2015] [Indexed: 01/13/2023] Open
Abstract
Using carbohydrate microarrays, we explored potential natural ligands of antitumor monoclonal antibody HAE3. This antibody was raised against a murine mammary tumor antigen but was found to cross-react with a number of human epithelial tumors in tissues. Our carbohydrate microarray analysis reveals that HAE3 is specific for an O-glycan cryptic epitope that is normally hidden in the cores of blood group substances. Using HAE3 to screen tumor cell surface markers by flow cytometry, we found that the HAE3 glycoepitope, gp(HAE3), was highly expressed by a number of human breast cancer cell lines, including some triple-negative cancers that lack the estrogen, progesterone, and Her2/neu receptors. Taken together, we demonstrate that HAE3 recognizes a conserved cryptic glycoepitope of blood group precursors, which is nevertheless selectively expressed and surface-exposed in certain breast tumor cells. The potential of this class of O-glycan cryptic antigens in breast cancer subtyping and targeted immunotherapy warrants further investigation.
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147
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Bryant CE, Orr S, Ferguson B, Symmons MF, Boyle JP, Monie TP. International Union of Basic and Clinical Pharmacology. XCVI. Pattern recognition receptors in health and disease. Pharmacol Rev 2015; 67:462-504. [PMID: 25829385 DOI: 10.1124/pr.114.009928] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Since the discovery of Toll, in the fruit fly Drosophila melanogaster, as the first described pattern recognition receptor (PRR) in 1996, many families of these receptors have been discovered and characterized. PRRs play critically important roles in pathogen recognition to initiate innate immune responses that ultimately link to the generation of adaptive immunity. Activation of PRRs leads to the induction of immune and inflammatory genes, including proinflammatory cytokines and chemokines. It is increasingly clear that many PRRs are linked to a range of inflammatory, infectious, immune, and chronic degenerative diseases. Several drugs to modulate PRR activity are already in clinical trials and many more are likely to appear in the near future. Here, we review the different families of mammalian PRRs, the ligands they recognize, the mechanisms of activation, their role in disease, and the potential of targeting these proteins to develop the anti-inflammatory therapeutics of the future.
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Affiliation(s)
- Clare E Bryant
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
| | - Selinda Orr
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
| | - Brian Ferguson
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
| | - Martyn F Symmons
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
| | - Joseph P Boyle
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
| | - Tom P Monie
- Departments of Veterinary Medicine (C.E.B., J.P.B., T.P.M.), Pathology (B.F.), and Biochemistry (M.F.S., J.P.B.), University of Cambridge, Cambridge, United Kingdom; and Institute of Infection and Immunity, Cardiff University, Cardiff, United Kingdom (S.O.)
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148
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Nagae M, Yamaguchi Y. Sugar recognition and protein-protein interaction of mammalian lectins conferring diverse functions. Curr Opin Struct Biol 2015; 34:108-15. [PMID: 26418728 DOI: 10.1016/j.sbi.2015.08.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 11/24/2022]
Abstract
Recent advances in structural analyses of mammalian lectins reveal atomic-level details of their fine specificities toward diverse endogenous and exogenous glycans. Local variations on a common scaffold can enable certain lectins to recognize complex carbohydrate ligands including branched glycans and O-glycosylated peptides. Simultaneous recognition of both glycan and the aglycon moieties enhances the affinity and specificity of lectins such as CLEC-2 and PILRα. Attention has been paid to the roles of galectin and RegIII family of proteins in protein-protein interactions involved in critical biological functions including signal transduction and bactericidal pore formation.
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Affiliation(s)
- Masamichi Nagae
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center, RIKEN Global Research Cluster, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center, RIKEN Global Research Cluster, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
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149
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Exclusive Decoration of Simian Immunodeficiency Virus Env with High-Mannose Type N-Glycans Is Not Compatible with Mucosal Transmission in Rhesus Macaques. J Virol 2015; 89:11727-33. [PMID: 26355090 PMCID: PMC4645679 DOI: 10.1128/jvi.01358-15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 09/02/2015] [Indexed: 11/22/2022] Open
Abstract
Human immunodeficiency virus (HIV) and simian immunodeficiency virus (SIV) envelope (Env) proteins are extensively decorated with N-glycans, predominantly of the high-mannose type. However, it is unclear how high-mannose N-glycans on Env impact viral spread. We show that exclusive modification of SIV Env with these N-glycans reduces viral infectivity and abrogates mucosal transmission, despite increasing viral capture by immune cell lectins. Thus, high-mannose N-glycans have opposed effects on SIV infectivity and lectin reactivity, and a balance might be required for efficient mucosal transmission.
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150
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Abstract
In this issue of Immunity, Conde et al. (2015) showed that a costimulatory blockade favors the accumulation of CD209a(+) macrophages which, upon interaction with fucosylated tissue ligands, promotes the expansion of CD4(+)Foxp3(+) Treg cell number.
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Affiliation(s)
- Juan J Garcia-Vallejo
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam MF-B242, 1081BT, the Netherlands.
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam MF-B242, 1081BT, the Netherlands.
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