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Saito T, Fujino N, Kyogoku Y, Yamada M, Okutomo K, Ono Y, Konno S, Endo T, Itakura K, Matsumoto S, Sano H, Aizawa H, Numakura T, Onodera K, Okada Y, Hussell T, Ichinose M, Sugiura H. Identification of Siglec-1-negative alveolar macrophages with proinflammatory phenotypes in chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2024; 326:L672-L686. [PMID: 38530936 DOI: 10.1152/ajplung.00303.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 03/21/2024] [Accepted: 03/21/2024] [Indexed: 03/28/2024] Open
Abstract
Alveolar macrophages (AMs) in patients with chronic obstructive pulmonary disease (COPD) orchestrate persistent inflammation in the airway. However, subpopulations of AMs participating in chronic inflammation have been poorly characterized. We previously reported that Siglec-1 expression on AMs, which is important for bacteria engulfment, was decreased in COPD. Here, we show that Siglec-1-negative AMs isolated from COPD lung tissues exhibit a proinflammatory phenotype and are associated with poor clinical outcomes in patients with COPD. Using flow cytometry, we segregated three subsets of AMs based on the expression of Siglec-1 and their side scattergram (SSC) and forward scattergram (FSC) properties: Siglec-1+SSChiFSChi, Siglec-1-SSChiFSChi, and Siglec-1-SSCloFSClo subsets. The Siglec-1-SSCloFSClo subset number was increased in COPD. RNA sequencing revealed upregulation of multiple proinflammatory signaling pathways and emphysema-associated matrix metalloproteases in the Siglec-1-SSCloFSClo subset. Gene set enrichment analysis indicated that the Siglec-1-SSCloFSClo subset adopted intermediate phenotypes between monocytes and mature alveolar macrophages. Functionally, these cells produced TNF-α, IL-6, and IL-8 at baseline, and these cytokines were significantly increased in response to viral RNA. The increase in Siglec-1-negative AMs in induced sputum is associated with future exacerbation risk and lung function decline in patients with COPD. Collectively, the novel Siglec-1-SSCloFSClo subset of AMs displays proinflammatory properties, and their emergence in COPD airways may be associated with poor clinical outcomes.NEW & NOTEWORTHY Alveolar macrophages (AMs) in patients with chronic obstructive pulmonary disease (COPD) orchestrate persistent inflammation in the airway. We find that Siglec-1-negative alveolar macrophages have a wide range of proinflammatory landscapes and a protease-expressing phenotype. Moreover, this subset is associated with the pathogenesis of COPD and responds to viral stimuli.
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Affiliation(s)
- Takuya Saito
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Naoya Fujino
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yorihiko Kyogoku
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mitsuhiro Yamada
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Koji Okutomo
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yoshinao Ono
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shuichi Konno
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takuto Endo
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Koji Itakura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shuichiro Matsumoto
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hirohito Sano
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Aizawa
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tadahisa Numakura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Katsuhiro Onodera
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yoshinori Okada
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Tracy Hussell
- Lydia Becker Institute of Immunology and Inflammation, The University of Manchester, Manchester, United Kingdom
| | | | - Hisatoshi Sugiura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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Abstract
Autoimmune diseases affect tens of millions of people just in the United States alone. Most of the available treatment options are aimed at reducing symptoms but do not lead to cures. Individuals affected with autoimmune diseases suffer from the imbalance between tolerogenic and immunogenic functions of their immune system. Often pathogenesis is mediated by autoreactive B and T cells that escape central tolerance and react against self-antigens attacking healthy tissues in the body. In recent years Siglecs, sialic-acid-binding immunoglobulin (Ig)-like lectins, have gained attention as immune checkpoints for therapeutic interventions to dampen excessive immune responses and to restore immune tolerance in autoimmune diseases. Many Siglecs function as inhibitory receptors suppressing activation signals in various immune cells through binding to sialic acid ligands as signatures of self. In this review, we highlight potential of Siglecs in suppressing immune responses causing autoimmune diseases. In particular, we cover the roles of CD22 and Siglec-G/Siglec-10 in regulating autoreactive B cell responses. We discuss several functions of Siglec-10 in the immune modulation of other immune cells, and the potential of therapeutic strategies for restoring immune tolerance by targeting Siglecs and expanding regulatory T cells. Finally, we briefly review efforts evaluating Siglec-based biomarkers to monitor autoimmune diseases.
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Affiliation(s)
- Katarzyna Alicja Brzezicka
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA; Department of Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - James C Paulson
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA; Department of Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.
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3
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Yeung ST, Ovando LJ, Russo AJ, Rathinam VA, Khanna KM. CD169+ macrophage intrinsic IL-10 production regulates immune homeostasis during sepsis. Cell Rep 2023; 42:112171. [PMID: 36867536 PMCID: PMC10123955 DOI: 10.1016/j.celrep.2023.112171] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 09/23/2022] [Accepted: 02/10/2023] [Indexed: 03/04/2023] Open
Abstract
Macrophages facilitate critical functions in regulating pathogen clearance and immune homeostasis in tissues. The remarkable functional diversity exhibited by macrophage subsets is dependent on tissue environment and the nature of the pathological insult. Our current knowledge of the mechanisms that regulate the multifaceted counter-inflammatory responses mediated by macrophages remains incomplete. Here, we report that CD169+ macrophage subsets are necessary for protection under excessive inflammatory conditions. We show that in the absence of these macrophages, even under mild septic conditions, mice fail to survive and exhibit increased production of inflammatory cytokines. Mechanistically, CD169+ macrophages control inflammatory responses via interleukin-10 (IL-10), as CD169+ macrophage-specific deletion of IL-10 was lethal during septic conditions, and recombinant IL-10 treatment reduced lipopolysaccharide (LPS)-induced lethality in mice lacking CD169+ macrophages. Collectively, our findings show a pivotal homeostatic role for CD169+ macrophages and suggest they may serve as an important target for therapy under damaging inflammatory conditions.
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Affiliation(s)
- Stephen T Yeung
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA
| | - Luis J Ovando
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA
| | - Ashley J Russo
- Department of Immunology, UConn Health School of Medicine, Farmington, CT 06032, USA
| | - Vijay A Rathinam
- Department of Immunology, UConn Health School of Medicine, Farmington, CT 06032, USA
| | - Kamal M Khanna
- Department of Microbiology, New York University Langone School of Medicine, New York, NY 10016, USA; Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA.
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Park YJ, Kang BH, Kim HJ, Oh JE, Lee HK. A Microbiota-Dependent Subset of Skin Macrophages Protects Against Cutaneous Bacterial Infection. Front Immunol 2022; 13:799598. [PMID: 35757750 PMCID: PMC9218056 DOI: 10.3389/fimmu.2022.799598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 05/06/2022] [Indexed: 11/23/2022] Open
Abstract
Microbiota is essential to the development and functional maturation of the immune system. The effects of the gut microbiota on myeloid cells remote from the gut, especially the skin remain unclear. Transcriptomic analysis revealed that type I interferon (IFN) signaling was down-regulated in the skin of germ-free mice compared to that in specific pathogen-free mice. The decrease in type I IFN signaling was closely related to the presence of microbiota and macrophage-specific marker CD169. The absence of CD169+ macrophages resulted in increased bacterial burden and impaired immune responses against Staphylococcus aureus skin infection. CD169+ macrophages mediated the recruitment of γδ T cells as well as the activation of γδ T cells via interleukin (IL)-23. Our findings demonstrate the role of the microbiota in establishment of a specific myeloid cell subset expressing CD169 in the skin and provide evidence of a specific mechanism by which this subset protects against bacterial skin infection.
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Affiliation(s)
- Young Joon Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea.,Department of Dermatology, Ajou University School of Medicine, Suwon, South Korea
| | - Byeong Hoon Kang
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Hyun-Jin Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Ji Eun Oh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
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Liao J, Zeng DN, Li JZ, Hua QM, Huang CX, Xu J, Wu C, Zheng L, Wen WP, Wu Y. Type I IFNs repolarized a CD169 + macrophage population with anti-tumor potentials in hepatocellular carcinoma. Mol Ther 2022; 30:632-643. [PMID: 34563673 PMCID: PMC8821951 DOI: 10.1016/j.ymthe.2021.09.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/07/2021] [Accepted: 09/20/2021] [Indexed: 02/04/2023] Open
Abstract
Macrophages constitute a major component in human hepatocellular carcinoma (HCC) and perform various functions to facilitate disease progression. Reprogramming or reconstituting the tumor surveillance phenotypes of macrophages represents an attractive immunotherapeutic strategy in cancer treatments. The current study identified CD169 as a potential target for macrophage repolarization since it signified a population of macrophages positively correlated with an activated immune signature and better prognosis of patients with HCC. In vitro experiments revealed that a low dose of type I interferon (IFN) could effectively reprogram human monocyte-derived macrophages to upregulate CD169 expression, and such induced CD169+ macrophages exhibited significantly enhanced phagocytotic and CD8+ T cell-activating capacities compared to controls. A low dose of IFNα also inhibited hepatoma growth in mice in vivo, presumably through polarizing the CD169+ macrophage population and enhancing CD8+ T cell activities. Notably, IFNα also induced substantial PD-L1 expression on macrophages in vivo, and thus blockade of PD-L1 could further increase the anti-tumor efficacy of IFNα in the treatment of HCC. We propose a low dose of IFNα in combination with a PD-L1 blocking agent as a potential anti-tumor therapeutic strategy via its effects on macrophage polarization.
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Affiliation(s)
- Jing Liao
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China,Department of Otorhinolaryngology Head and Neck Surgery, Department of Thyroid Center/Thyroid Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, China,Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, China
| | - Dan-Ni Zeng
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Jin-Zhu Li
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China,Department of Pathology, Zhongshan Traditional Chinese Medicine Hospital, Zhongshan, Guangdong 528400, China
| | - Qiao-Min Hua
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Chun-Xia Huang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, China
| | - Jing Xu
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Chong Wu
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Limin Zheng
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China,Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Wei-Ping Wen
- Department of Otorhinolaryngology Head and Neck Surgery, Department of Thyroid Center/Thyroid Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510655, China,Corresponding author: Wei-Ping Wen, Department of Otorhinolaryngology Head and Neck Surgery, Department of Thyroid Center/Thyroid Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, 26 Yuan Cun Er Heng Road, Guangzhou, 510655, China.
| | - Yan Wu
- MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China,Corresponding author: Yan Wu, MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, 135 Xin Gang Xi Road, Guangzhou 510275, China.
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6
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Xie Y, Li Y, Han S. Metabolic installation of macrophage-recruiting glycan ligand on tumor cell surface for in vivo tumor suppression. Bioorg Med Chem Lett 2022; 57:128500. [PMID: 34906672 DOI: 10.1016/j.bmcl.2021.128500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 11/02/2022]
Abstract
Synthetic probes that could direct immune cells against tumors are potential immunotherapeutics. We herein report in vivo tumor suppression via an intravenously injected abiotic sialic acid (TCCSia) that could be metabolically incorporated into tumor cell surface to yield of a high affinity ligand (TCCSiaα2,3-Gal) of Siglec-1 specifically expressed on macrophages. We observed marked suppression of pulmonary metastasis and subcutaneous tumor growth of B16F10 melanoma cells in mice with TCCSia, suggesting the utility of abiotic sialic acid to modulate tumor immunity via recruiting Siglec+ immune cells.
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Affiliation(s)
- Yunzhi Xie
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361005, China
| | - Yibao Li
- Jiangxi Key Laboratory of Organo-Pharmaceutical Chemistry, Chemistry and Chemical Engineering College, Gannan Normal University, Ganzhou, Jiangxi 341000, China.
| | - Shoufa Han
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361005, China.
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7
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Lerkvaleekul B, Veldkamp SR, van der Wal MM, Schatorjé EJH, Kamphuis SSM, van den Berg JM, Muller PCEH, Armbrust W, Vastert SJ, Wienke J, Jansen MHA, van Royen-Kerkhof A, van Wijk F. Siglec-1 expression on monocytes is associated with the interferon signature in juvenile dermatomyositis and can predict treatment response. Rheumatology (Oxford) 2021; 61:2144-2155. [PMID: 34387304 PMCID: PMC9071568 DOI: 10.1093/rheumatology/keab601] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/20/2021] [Indexed: 12/01/2022] Open
Abstract
Objective JDM is a rare chronic immune-mediated inflammatory disease with a predominant role for type I IFN responses. We aimed to determine the potential of Siglec-1 expression on monocytes as a novel IFN-inducible biomarker for disease activity monitoring and prediction of treatment response in patients with JDM. Methods Siglec-1 was measured by flow cytometry on circulating monocytes of 21 newly diagnosed JDM patients before start of treatment and, for 10 of these, also during follow-up. The expression levels of five type I IFN-stimulated genes, MX1, IFI44, IFI44L, LY6E and IFIT3, were measured by RT-qPCR to determine the IFN signature and calculate an IFN score. IFN-inducible plasma proteins CXCL10 and galectin-9 were measured by multiplex immunoassay. Results Siglec-1 and IFN score were increased in JDM patients compared with controls and correlated with clinical disease activity. Stratification of patients by Siglec-1 expression at diagnosis identified those with high Siglec-1 expression as having a higher risk of requiring treatment intensification within the first 3 months after diagnosis (55% vs 0% of patients, P = 0.01). Siglec-1 expression strongly correlated with plasma levels of previously validated biomarkers CXCL10 (rs = 0.81, P < 0.0001) and galectin-9 (rs = 0.83, P < 0.0001), and was superior to the IFN score in predicting treatment response (area under the curve 0.87 vs 0.53, P = 0.01). Conclusion Siglec-1 on monocytes is a novel IFN-inducible biomarker in JDM that correlates with clinical disease activity and identifies patients at risk for a suboptimal treatment response. Further studies are required to validate these findings and their clinical potential.
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Affiliation(s)
- Butsabong Lerkvaleekul
- Division of Rheumatology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Saskia R Veldkamp
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Maria M van der Wal
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Ellen J H Schatorjé
- Department of Paediatrics, Paediatric Rheumatology, Amalia Children's Hospital, Radboud University Medical Centre Nijmegen, Nijmegen, the Netherlands
| | - Sylvia S M Kamphuis
- Paediatric Rheumatology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - J Merlijn van den Berg
- Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children's Hospital, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Petra C E Hissink Muller
- Department of Paediatric Rheumatology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Wineke Armbrust
- Department of Pediatric Rheumatology and Immunology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Sebastiaan J Vastert
- Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Judith Wienke
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marc H A Jansen
- Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Annet van Royen-Kerkhof
- Pediatric Rheumatology and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Femke van Wijk
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
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8
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Affandi AJ, Olesek K, Grabowska J, Nijen Twilhaar MK, Rodríguez E, Saris A, Zwart ES, Nossent EJ, Kalay H, de Kok M, Kazemier G, Stöckl J, van den Eertwegh AJM, de Gruijl TD, Garcia-Vallejo JJ, Storm G, van Kooyk Y, den Haan JMM. CD169 Defines Activated CD14 + Monocytes With Enhanced CD8 + T Cell Activation Capacity. Front Immunol 2021; 12:697840. [PMID: 34394090 PMCID: PMC8356644 DOI: 10.3389/fimmu.2021.697840] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/13/2021] [Indexed: 12/20/2022] Open
Abstract
Monocytes are antigen-presenting cells (APCs) that play diverse roles in promoting or regulating inflammatory responses, but their role in T cell stimulation is not well defined. In inflammatory conditions, monocytes frequently show increased expression of CD169/Siglec-1, a type-I interferon (IFN-I)-regulated protein. However, little is known about the phenotype and function of these CD169+ monocytes. Here, we have investigated the phenotype of human CD169+ monocytes in different diseases, their capacity to activate CD8+ T cells, and the potential for a targeted-vaccination approach. Using spectral flow cytometry, we detected CD169 expression by CD14+ CD16- classical and CD14+ CD16+ intermediate monocytes and unbiased analysis showed that they were distinct from dendritic cells, including the recently described CD14-expressing DC3. CD169+ monocytes expressed higher levels of co-stimulatory and HLA molecules, suggesting an increased activation state. IFNα treatment highly upregulated CD169 expression on CD14+ monocytes and boosted their capacity to cross-present antigen to CD8+ T cells. Furthermore, we observed CD169+ monocytes in virally-infected patients, including in the blood and bronchoalveolar lavage fluid of COVID-19 patients, as well as in the blood of patients with different types of cancers. Finally, we evaluated two CD169-targeting nanovaccine platforms, antibody-based and liposome-based, and we showed that CD169+ monocytes efficiently presented tumor-associated peptides gp100 and WT1 to antigen-specific CD8+ T cells. In conclusion, our data indicate that CD169+ monocytes are activated monocytes with enhanced CD8+ T cell stimulatory capacity and that they emerge as an interesting target in nanovaccine strategies, because of their presence in health and different diseases.
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Affiliation(s)
- Alsya J Affandi
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Katarzyna Olesek
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Joanna Grabowska
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Maarten K Nijen Twilhaar
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Ernesto Rodríguez
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Anno Saris
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | - Eline S Zwart
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Esther J Nossent
- Department of Pulmonary Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Cardiovascular Sciences Research Institute, Amsterdam UMC, Amsterdam, Netherlands
| | - Hakan Kalay
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Michael de Kok
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Geert Kazemier
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Johannes Stöckl
- Institute of Immunology, Centre for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Alfons J M van den Eertwegh
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Juan J Garcia-Vallejo
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Gert Storm
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands.,Department of Biomaterials, Science and Technology, Faculty of Science and Technology, University of Twente, Enschede, Netherlands.,Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Joke M M den Haan
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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9
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Grabowska J, Affandi AJ, van Dinther D, Nijen Twilhaar MK, Olesek K, Hoogterp L, Ambrosini M, Heijnen DAM, Klaase L, Hidalgo A, Asano K, Crocker PR, Storm G, van Kooyk Y, den Haan JMM. Liposome induction of CD8 + T cell responses depends on CD169 + macrophages and Batf3-dependent dendritic cells and is enhanced by GM3 inclusion. J Control Release 2021; 331:309-320. [PMID: 33493613 DOI: 10.1016/j.jconrel.2021.01.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/16/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023]
Abstract
Cancer vaccines aim to efficiently prime cytotoxic CD8+ T cell responses which can be achieved by vaccine targeting to dendritic cells. CD169+ macrophages have been shown to transfer antigen to dendritic cells and could act as an alternative target for cancer vaccines. Here, we evaluated liposomes containing the CD169/Siglec-1 binding ligand, ganglioside GM3, and the non-binding ligand, ganglioside GM1, for their capacity to target antigens to CD169+ macrophages and to induce immune responses. CD169+ macrophages demonstrated specific uptake of GM3 liposomes in vitro and in vivo that was dependent on a functional CD169 receptor. Robust antigen-specific CD8+ and CD4+ T and B cell responses were observed upon intravenous administration of GM3 liposomes containing the model antigen ovalbumin in the presence of adjuvant. Immunization of B16-OVA tumor bearing mice with all liposomes resulted in delayed tumor growth and improved survival. The absence of CD169+ macrophages, functional CD169 molecules, and cross-presenting Batf3-dependent dendritic cells (cDC1s) significantly impaired CD8+ T cell responses, while B cell responses were less affected. In conclusion, we demonstrate that inclusion of GM3 in liposomes enhance immune responses and that splenic CD169+ macrophages and cDC1s are required for induction of CD8+ T cell immunity after liposomal vaccination.
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Affiliation(s)
- J Grabowska
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - A J Affandi
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - D van Dinther
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - M K Nijen Twilhaar
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - K Olesek
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - L Hoogterp
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - M Ambrosini
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - D A M Heijnen
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - L Klaase
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - A Hidalgo
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - K Asano
- Laboratory of Immune Regulation, School of Life Science, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan
| | - P R Crocker
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, UK
| | - G Storm
- Department of Pharmaceutics, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, the Netherlands; Department of Biomaterials, Science and Technology, Faculty of Science and Technology, University of Twente, Enschede, the Netherlands; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Y van Kooyk
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - J M M den Haan
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.
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10
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Nijen Twilhaar MK, Czentner L, Grabowska J, Affandi AJ, Lau CYJ, Olesek K, Kalay H, van Nostrum CF, van Kooyk Y, Storm G, Haan JMMD. Optimization of Liposomes for Antigen Targeting to Splenic CD169 + Macrophages. Pharmaceutics 2020; 12:E1138. [PMID: 33255564 DOI: 10.3390/pharmaceutics12121138] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/21/2022] Open
Abstract
Despite promising progress in cancer vaccination, therapeutic effectiveness is often insufficient. Cancer vaccine effectiveness could be enhanced by targeting vaccine antigens to antigen-presenting cells, thereby increasing T-cell activation. CD169-expressing splenic macrophages efficiently capture particulate antigens from the blood and transfer these antigens to dendritic cells for the activation of CD8+ T cells. In this study, we incorporated a physiological ligand for CD169, the ganglioside GM3, into liposomes to enhance liposome uptake by CD169+ macrophages. We assessed how variation in the amount of GM3, surface-attached PEG and liposomal size affected the binding to, and uptake by, CD169+ macrophages in vitro and in vivo. As a proof of concept, we prepared GM3-targeted liposomes containing a long synthetic ovalbumin peptide and tested the capacity of these liposomes to induce CD8+ and CD4+ T-cell responses compared to control liposomes or soluble peptide. The data indicate that the delivery of liposomes to splenic CD169+ macrophages can be optimized by the selection of liposomal constituents and liposomal size. Moreover, optimized GM3-mediated liposomal targeting to CD169+ macrophages induces potent immune responses and therefore presents as an interesting delivery strategy for cancer vaccination.
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11
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Affandi AJ, Grabowska J, Olesek K, Lopez Venegas M, Barbaria A, Rodríguez E, Mulder PPG, Pijffers HJ, Ambrosini M, Kalay H, O'Toole T, Zwart ES, Kazemier G, Nazmi K, Bikker FJ, Stöckl J, van den Eertwegh AJM, de Gruijl TD, Storm G, van Kooyk Y, den Haan JMM. Selective tumor antigen vaccine delivery to human CD169 + antigen-presenting cells using ganglioside-liposomes. Proc Natl Acad Sci U S A 2020; 117:27528-27539. [PMID: 33067394 PMCID: PMC7959579 DOI: 10.1073/pnas.2006186117] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Priming of CD8+ T cells by dendritic cells (DCs) is crucial for the generation of effective antitumor immune responses. Here, we describe a liposomal vaccine carrier that delivers tumor antigens to human CD169/Siglec-1+ antigen-presenting cells using gangliosides as targeting ligands. Ganglioside-liposomes specifically bound to CD169 and were internalized by in vitro-generated monocyte-derived DCs (moDCs) and macrophages and by ex vivo-isolated splenic macrophages in a CD169-dependent manner. In blood, high-dimensional reduction analysis revealed that ganglioside-liposomes specifically targeted CD14+ CD169+ monocytes and Axl+ CD169+ DCs. Liposomal codelivery of tumor antigen and Toll-like receptor ligand to CD169+ moDCs and Axl+ CD169+ DCs led to cytokine production and robust cross-presentation and activation of tumor antigen-specific CD8+ T cells. Finally, Axl+ CD169+ DCs were present in cancer patients and efficiently captured ganglioside-liposomes. Our findings demonstrate a nanovaccine platform targeting CD169+ DCs to drive antitumor T cell responses.
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Affiliation(s)
- Alsya J Affandi
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Joanna Grabowska
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Katarzyna Olesek
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Miguel Lopez Venegas
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- DC4U, 3621 ZA Breukelen, The Netherlands
| | - Arnaud Barbaria
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Ernesto Rodríguez
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Patrick P G Mulder
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Helen J Pijffers
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Martino Ambrosini
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Hakan Kalay
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Tom O'Toole
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Eline S Zwart
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Geert Kazemier
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, 1081 LA Amsterdam, The Netherlands
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, 1081 LA Amsterdam, The Netherlands
| | - Johannes Stöckl
- Institute of Immunology, Centre for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Alfons J M van den Eertwegh
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Gert Storm
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3508 TB Utrecht, The Netherlands
- Department of Biomaterials, Science and Technology, Faculty of Science and Technology, University of Twente, 7522 NB Enschede, The Netherlands
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- DC4U, 3621 ZA Breukelen, The Netherlands
| | - Joke M M den Haan
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands;
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12
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Tanno A, Fujino N, Yamada M, Sugiura H, Hirano T, Tanaka R, Sano H, Suzuki S, Okada Y, Ichinose M. Decreased expression of a phagocytic receptor Siglec-1 on alveolar macrophages in chronic obstructive pulmonary disease. Respir Res 2020; 21:30. [PMID: 31992280 PMCID: PMC6986024 DOI: 10.1186/s12931-020-1297-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/16/2020] [Indexed: 01/08/2023] Open
Abstract
Background Alveolar macrophages are professional phagocytes that remove microbial pathogens inhaled into the lung. The phagocytic ability is compromised in chronic obstructive pulmonary disease (COPD). However, the molecular mechanisms underlying this defect in phagocytosis are not clearly defined. Materials and methods Cell suspensions were collected from lung tissues of patients undergoing lung resection. Alveolar macrophages were detected as FSChi/ SSChi/CD45+/CD206+ cells in the isolated cell suspension by flow-cytometry. The cell surface expression of plasma membrane-bound phagocytic receptors (Fcγ receptor I (FcγRI), a complement receptor CD11b, macrophage scavenger receptor-1 (MSR-1), CD36 and Siglec-1) was determined on the alveolar macrophages. Correlations between the expression levels of the phagocytic receptors and disease severity were analysed. Phagocytosis of fluorescence-tagged bacteria by human alveolar macrophages was evaluated. Results The flow-cytometry analyses revealed that FcγRI, CD11b, MSR-1 and Siglec-1, but not CD36, were expressed on human alveolar macrophages. Among these receptors, Siglec-1 expression was significantly decreased on alveolar macrophages in COPD ex-smokers (n = 11), compared to control never-smokers (n = 11) or control ex-smokers (n = 9). The Siglec-1 expression on alveolar macrophages was significantly correlated with lung function (forced expiratory volume in 1 s) and with the severity of emphysema. Treatment of human alveolar macrophages with an anti-Siglec1 blocking antibody decreased phagocytosis of non-typeable Haemophilus influenzae (NTHi). Conclusion Our findings demonstrated reduced expression of Siglec-1 on alveolar macrophages in COPD, which is involved in engulfment of NTHi.
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Affiliation(s)
| | - Naoya Fujino
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan.
| | - Mitsuhiro Yamada
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
| | - Hisatoshi Sugiura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
| | - Taizou Hirano
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
| | - Rie Tanaka
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
| | - Hirohito Sano
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
| | - Satoshi Suzuki
- Department of Thoracic Surgery, Japanese Red Cross Ishinomaki Hospital, Ishinomaki, 986 8522, Japan
| | - Yoshinori Okada
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, 980 8575, Japan
| | - Masakazu Ichinose
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryocho, Aobaku, Sendai, 980 8574, Japan
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13
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Perez-Zsolt D, Martinez-Picado J, Izquierdo-Useros N. When Dendritic Cells Go Viral: The Role of Siglec-1 in Host Defense and Dissemination of Enveloped Viruses. Viruses 2019; 12:v12010008. [PMID: 31861617 PMCID: PMC7019426 DOI: 10.3390/v12010008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/15/2022] Open
Abstract
Dendritic cells (DCs) are among the first cells that recognize incoming viruses at the mucosal portals of entry. Initial interaction between DCs and viruses facilitates cell activation and migration to secondary lymphoid tissues, where these antigen presenting cells (APCs) prime specific adaptive immune responses. Some viruses, however, have evolved strategies to subvert the migratory capacity of DCs as a way to disseminate infection systemically. Here we focus on the role of Siglec-1, a sialic acid-binding type I lectin receptor potently upregulated by type I interferons on DCs, that acts as a double edge sword, containing viral replication through the induction of antiviral immunity, but also favoring viral spread within tissues. Such is the case for distant enveloped viruses like human immunodeficiency virus (HIV)-1 or Ebola virus (EBOV), which incorporate sialic acid-containing gangliosides on their viral membrane and are effectively recognized by Siglec-1. Here we review how Siglec-1 is highly induced on the surface of human DCs upon viral infection, the way this impacts different antigen presentation pathways, and how enveloped viruses have evolved to exploit these APC functions as a potent dissemination strategy in different anatomical compartments.
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Affiliation(s)
- Daniel Perez-Zsolt
- IrsiCaixa AIDS Research Institute, Ctra. de Canyet s/n, 08916 Badalona, Spain;
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Institut d’Investigació en Ciències de la Salut Germans Trias i Pujol, 08916 Badalona, Spain
| | - Javier Martinez-Picado
- IrsiCaixa AIDS Research Institute, Ctra. de Canyet s/n, 08916 Badalona, Spain;
- Institut d’Investigació en Ciències de la Salut Germans Trias i Pujol, 08916 Badalona, Spain
- Chair in Infectious Diseases and Immunity, Faculty of Medicine, University of Vic-Central University of Catalonia (UVic-UCC), 08500 Vic, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
- Correspondence: (J.M.-P.); (N.I.-U.)
| | - Nuria Izquierdo-Useros
- IrsiCaixa AIDS Research Institute, Ctra. de Canyet s/n, 08916 Badalona, Spain;
- Institut d’Investigació en Ciències de la Salut Germans Trias i Pujol, 08916 Badalona, Spain
- Correspondence: (J.M.-P.); (N.I.-U.)
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14
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Ruffin N, Gea-Mallorquí E, Brouiller F, Jouve M, Silvin A, See P, Dutertre CA, Ginhoux F, Benaroch P. Constitutive Siglec-1 expression confers susceptibility to HIV-1 infection of human dendritic cell precursors. Proc Natl Acad Sci U S A 2019; 116:21685-93. [PMID: 31591213 DOI: 10.1073/pnas.1911007116] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The human dendritic cell (DC) lineage has recently been unraveled by high-dimensional mapping, revealing the existence of a discrete new population of blood circulating DC precursors (pre-DCs). Whether this new DC population possesses specific functional features as compared to the other blood DC subset upon pathogen encounter remained to be evaluated. A unique feature of pre-DCs among blood DCs is their constitutive expression of the viral adhesion receptor Siglec-1. Here, we show that pre-DCs, but not other blood DC subsets, are susceptible to infection by HIV-1 in a Siglec-1-dependent manner. Siglec-1 mediates pre-DC infection of CCR5- and CXCR4-tropic strains. Infection of pre-DCs is further enhanced in the presence of HIV-2/SIVmac Vpx, indicating that Siglec-1 does not counteract restriction factors such as SAMHD1. Instead, Siglec-1 promotes attachment and fusion of viral particles. HIV-1-infected pre-DCs produce new infectious viral particles that accumulate in intracellular compartments reminiscent of the virus-containing compartment of macrophages. Pre-DC activation by toll-like receptor (TLR) ligands induces an antiviral state that inhibits HIV-1 fusion and infection, but Siglec-1 remains functional and mediates replication-independent transfer of HIV-1 to activated primary T lymphocytes. Altogether, Siglec-1-mediated susceptibility to HIV-1 infection of pre-DCs constitutes a unique functional feature that might represent a preferential relationship of this emerging cell type with viruses.
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15
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van Dinther D, Veninga H, Iborra S, Borg EGF, Hoogterp L, Olesek K, Beijer MR, Schetters STT, Kalay H, Garcia-Vallejo JJ, Franken KL, Cham LB, Lang KS, van Kooyk Y, Sancho D, Crocker PR, den Haan JMM. Functional CD169 on Macrophages Mediates Interaction with Dendritic Cells for CD8 + T Cell Cross-Priming. Cell Rep 2019; 22:1484-1495. [PMID: 29425504 DOI: 10.1016/j.celrep.2018.01.021] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/12/2017] [Accepted: 01/08/2018] [Indexed: 12/16/2022] Open
Abstract
Splenic CD169+ macrophages are located in the marginal zone to efficiently capture blood-borne pathogens. Here, we investigate the requirements for the induction of CD8+ T cell responses by antigens (Ags) bound by CD169+ macrophages. Upon Ag targeting to CD169+ macrophages, we show that BATF3-dependent CD8α+ dendritic cells (DCs) are crucial for DNGR-1-mediated cross-priming of CD8+ T cell responses. In addition, we demonstrate that CD169, a sialic acid binding lectin involved in cell-cell contact, preferentially binds to CD8α+ DCs and that Ag transfer to CD8α+ DCs and subsequent T cell activation is dependent on the sialic acid-binding capacity of CD169. Finally, functional CD169 mediates optimal CD8+ T cell responses to modified vaccinia Ankara virus infection. Together, these data indicate that the collaboration of CD169+ macrophages and CD8α+ DCs for the initiation of effective CD8+ T cell responses is facilitated by binding of CD169 to sialic acid containing ligands on CD8α+ DCs.
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Affiliation(s)
- Dieke van Dinther
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Henrike Veninga
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Salvador Iborra
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Ellen G F Borg
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Leoni Hoogterp
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Katarzyna Olesek
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Marieke R Beijer
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Sjoerd T T Schetters
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Hakan Kalay
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Juan J Garcia-Vallejo
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Kees L Franken
- Department of Immunohematology and Bloodtransfusion, LUMC, Leiden, the Netherlands
| | - Lamin B Cham
- Institute of Immunology, Medical Faculty, University Duisburg-Essen, 45122 Essen, Germany
| | - Karl S Lang
- Institute of Immunology, Medical Faculty, University Duisburg-Essen, 45122 Essen, Germany
| | - Yvette van Kooyk
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - David Sancho
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Paul R Crocker
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
| | - Joke M M den Haan
- Cancer Center Amsterdam, Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam, the Netherlands.
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16
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Perez-Zsolt D, Cantero-Pérez J, Erkizia I, Benet S, Pino M, Serra-Peinado C, Hernández-Gallego A, Castellví J, Tapia G, Arnau-Saz V, Garrido J, Tarrats A, Buzón MJ, Martinez-Picado J, Izquierdo-Useros N, Genescà M. Dendritic Cells From the Cervical Mucosa Capture and Transfer HIV-1 via Siglec-1. Front Immunol 2019; 10:825. [PMID: 31114569 PMCID: PMC6503733 DOI: 10.3389/fimmu.2019.00825] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/28/2019] [Indexed: 01/06/2023] Open
Abstract
Antigen presenting cells from the cervical mucosa are thought to amplify incoming HIV-1 and spread infection systemically without being productively infected. Yet, the molecular mechanism at the cervical mucosa underlying this viral transmission pathway remains unknown. Here we identified a subset of HLA-DR+ CD14+ CD11c+ cervical DCs at the lamina propria of the ectocervix and the endocervix that expressed the type-I interferon inducible lectin Siglec-1 (CD169), which promoted viral uptake. In the cervical biopsy of a viremic HIV-1+ patient, Siglec-1+ cells harbored HIV-1-containing compartments, demonstrating that in vivo, these cells trap viruses. Ex vivo, a type-I interferon antiviral environment enhanced viral capture and trans-infection via Siglec-1. Nonetheless, HIV-1 transfer via cervical DCs was effectively prevented with antibodies against Siglec-1. Our findings contribute to decipher how cervical DCs may boost HIV-1 replication and promote systemic viral spread from the cervical mucosa, and highlight the importance of including inhibitors against Siglec-1 in microbicidal strategies.
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Affiliation(s)
- Daniel Perez-Zsolt
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Jon Cantero-Pérez
- Department of Infectious Diseases, Vall d'Hebron Institut de Recerca, Barcelona, Spain.,Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain
| | | | - Susana Benet
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Maria Pino
- IrsiCaixa AIDS Research Institute, Badalona, Spain
| | - Carla Serra-Peinado
- Department of Infectious Diseases, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Alba Hernández-Gallego
- Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain.,Pathology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Josep Castellví
- Pathology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Department of Morphological Sciences, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Gustavo Tapia
- Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain.,Pathology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.,Department of Morphological Sciences, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Vicent Arnau-Saz
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona, Spain.,Department of Infectious Diseases, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | | | - Antoni Tarrats
- Department of Obstetrics and Gynecology, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Maria J Buzón
- Department of Infectious Diseases, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Javier Martinez-Picado
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,University of Vic-Central University of Catalonia (UVic-UCC), Vic, Spain.,Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
| | - Nuria Izquierdo-Useros
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain
| | - Meritxell Genescà
- Department of Infectious Diseases, Vall d'Hebron Institut de Recerca, Barcelona, Spain.,Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain
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17
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van Dinther D, Lopez Venegas M, Veninga H, Olesek K, Hoogterp L, Revet M, Ambrosini M, Kalay H, Stöckl J, van Kooyk Y, den Haan JMM. Activation of CD8⁺ T Cell Responses after Melanoma Antigen Targeting to CD169⁺ Antigen Presenting Cells in Mice and Humans. Cancers (Basel) 2019; 11:cancers11020183. [PMID: 30764534 PMCID: PMC6406251 DOI: 10.3390/cancers11020183] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/28/2019] [Accepted: 01/31/2019] [Indexed: 12/30/2022] Open
Abstract
The lack of tumor-reactive T cells is one reason why immune checkpoint inhibitor therapies still fail in a significant proportion of melanoma patients. A vaccination that induces melanoma-specific T cells could potentially enhance the efficacy of immune checkpoint inhibitors. Here, we describe a vaccination strategy in which melanoma antigens are targeted to mouse and human CD169 and thereby induce strong melanoma antigen-specific T cell responses. CD169 is a sialic acid receptor expressed on a subset of mouse splenic macrophages that captures antigen from the blood and transfers it to dendritic cells (DCs). In human and mouse spleen, we detected CD169+ cells at an equivalent location using immunofluorescence microscopy. Immunization with melanoma antigens conjugated to antibodies (Abs) specific for mouse CD169 efficiently induced gp100 and Trp2-specific T cell responses in mice. In HLA-A2.1 transgenic mice targeting of the human MART-1 peptide to CD169 induced strong MART-1-specific HLA-A2.1-restricted T cell responses. Human gp100 peptide conjugated to Abs specific for human CD169 bound to CD169-expressing monocyte-derived DCs (MoDCs) and resulted in activation of gp100-specific T cells. Together, these data indicate that Ab-mediated antigen targeting to CD169 is a potential strategy for the induction of melanoma-specific T cell responses in mice and in humans.
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Affiliation(s)
- Dieke van Dinther
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Miguel Lopez Venegas
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
- DC4U B.V., De Corridor 21E, 3621 ZA Breukelen, The Netherlands.
| | - Henrike Veninga
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Katarzyna Olesek
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Leoni Hoogterp
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Mirjam Revet
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Martino Ambrosini
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
- DC4U B.V., De Corridor 21E, 3621 ZA Breukelen, The Netherlands.
| | - Hakan Kalay
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
| | - Johannes Stöckl
- Institute of Immunology, Center of Pathophysiology, Immunology and Infectiology, Medical University of Vienna, 1090 Vienna, Austria.
| | - Yvette van Kooyk
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
- DC4U B.V., De Corridor 21E, 3621 ZA Breukelen, The Netherlands.
| | - Joke M M den Haan
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands.
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18
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van Dinther D, Veninga H, Revet M, Hoogterp L, Olesek K, Grabowska J, Borg EGF, Kalay H, van Kooyk Y, den Haan JMM. Comparison of Protein and Peptide Targeting for the Development of a CD169-Based Vaccination Strategy Against Melanoma. Front Immunol 2018; 9:1997. [PMID: 30237798 PMCID: PMC6135888 DOI: 10.3389/fimmu.2018.01997] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 08/14/2018] [Indexed: 12/13/2022] Open
Abstract
CD169+ macrophages are part of the innate immune system and capture pathogens that enter secondary lymphoid organs such as the spleen and the lymph nodes. Their strategic location in the marginal zone of the spleen and the subcapsular sinus in the lymph node enables them to capture antigens from the blood and the lymph respectively. Interestingly, these specific CD169+ macrophages do not destroy the antigens they obtain, but instead, transfer it to B cells and dendritic cells (DCs) which facilitates the induction of strong adaptive immune responses. This latter characteristic of the CD169+ macrophages can be exploited by specifically targeting tumor antigens to CD169+ macrophages for the induction of specific T cell immunity. In the current study we target protein and peptide antigen as antibody-antigen conjugates to CD169+ macrophages. We monitored the primary, memory, and recall T cell responses and evaluated the anti-tumor immune responses after immunization. In conclusion, both protein and peptide targeting to CD169 resulted in strong primary, memory, and recall T cell responses and protective immunity against melanoma, which indicates that both forms of antigen can be further explored as anti-cancer vaccination strategy.
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Affiliation(s)
- Dieke van Dinther
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Henrike Veninga
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Mirjam Revet
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Leoni Hoogterp
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Katarzyna Olesek
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Joanna Grabowska
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Ellen G F Borg
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Hakan Kalay
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Yvette van Kooyk
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Joke M M den Haan
- Amsterdam UMC, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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19
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Jans J, Unger WWJ, Vissers M, Ahout IML, Schreurs I, Wickenhagen A, de Groot R, de Jonge MI, Ferwerda G. Siglec-1 inhibits RSV-induced interferon gamma production by adult T cells in contrast to newborn T cells. Eur J Immunol 2018; 48:621-631. [PMID: 29266251 PMCID: PMC5947594 DOI: 10.1002/eji.201747161] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/29/2017] [Accepted: 12/08/2017] [Indexed: 12/12/2022]
Abstract
Interferon gamma (IFN‐γ) plays an important role in the antiviral immune response during respiratory syncytial virus (RSV) infections. Monocytes and T cells are recruited to the site of RSV infection, but it is unclear whether cell‐cell interactions between monocytes and T cells regulate IFN‐γ production. In this study, micro‐array data identified the upregulation of sialic acid‐binding immunoglobulin‐type lectin 1 (Siglec‐1) in human RSV‐infected infants. In vitro, RSV increased expression of Siglec‐1 on healthy newborn and adult monocytes. RSV‐induced Siglec‐1 on monocytes inhibited IFN‐γ production by adult CD4+ T cells. In contrast, IFN‐γ production by RSV in newborns was not affected by Siglec‐1. The ligand for Siglec‐1, CD43, is highly expressed on adult CD4+ T cells compared to newborns. Our data show that Siglec‐1 reduces IFN‐γ release by adult T cells possibly by binding to the highly expressed CD43. The Siglec‐1‐dependent inhibition of IFN‐γ in adults and the low expression of CD43 on newborn T cells provides a better understanding of the immune response against RSV in early life and adulthood.
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Affiliation(s)
- Jop Jans
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Wendy W J Unger
- Laboratory of Pediatrics, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Marloes Vissers
- Department of Immune Mechanisms, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Inge M L Ahout
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Inge Schreurs
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Arthur Wickenhagen
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Ronald de Groot
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Marien I de Jonge
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Gerben Ferwerda
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
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20
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Martinez-Picado J, McLaren PJ, Telenti A, Izquierdo-Useros N. Retroviruses As Myeloid Cell Riders: What Natural Human Siglec-1 "Knockouts" Tell Us About Pathogenesis. Front Immunol 2017; 8:1593. [PMID: 29209326 PMCID: PMC5702442 DOI: 10.3389/fimmu.2017.01593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/06/2017] [Indexed: 01/08/2023] Open
Abstract
Myeloid cells initiate immune responses and are crucial to control infections. In the case of retroviruses, however, myeloid cells also promote pathogenesis by enabling viral dissemination; a process extensively studied in vitro using human immunodeficiency virus type 1 (HIV-1). This viral hijacking mechanism does not rely on productive myeloid cell infection but requires HIV-1 capture via Siglec-1/CD169, a receptor expressed on myeloid cells that facilitates the infection of bystander target cells. Murine retroviruses are also recognized by Siglec-1, and this interaction is required for robust retroviral infection in vivo. Yet, the relative contribution of Siglec-1-mediated viral dissemination to HIV-1 disease progression remains unclear. The identification of human null individuals lacking working copies of a particular gene enables studying how this loss affects disease progression. Moreover, it can reveal novel antiviral targets whose blockade might be therapeutically effective and safe, since finding null individuals in natura uncovers dispensable functions. We previously described a loss-of-function variant in SIGLEC-1. Analysis of a large cohort of HIV-1-infected individuals identified homozygous and heterozygous subjects, whose cells were functionally null or partially defective for Siglec-1 activity in HIV-1 capture and transmission ex vivo. Nonetheless, analysis of the effect of Siglec-1 truncation on progression to AIDS was not conclusive due to the limited cohort size, the lack of complete clinical records, and the restriction to study only off-therapy periods. Here, we review how the study of loss-of-function variants might serve to illuminate the role of myeloid cells in viral pathogenesis in vivo and the challenges ahead.
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Affiliation(s)
- Javier Martinez-Picado
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.,University of Vic-Central University of Catalonia (UVic-UCC), Vic, Spain
| | - Paul J McLaren
- National HIV and Retrovirology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada.,Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Amalio Telenti
- Genomic Medicine, J. Craig Venter Institute, La Jolla, CA, United States
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21
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Jobe O, Kim J, Tycksen E, Onkar S, Michael NL, Alving CR, Rao M. Human Primary Macrophages Derived In Vitro from Circulating Monocytes Comprise Adherent and Non-Adherent Subsets with Differential Expression of Siglec-1 and CD4 and Permissiveness to HIV-1 Infection. Front Immunol 2017; 8:1352. [PMID: 29123518 PMCID: PMC5662875 DOI: 10.3389/fimmu.2017.01352] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/03/2017] [Indexed: 12/18/2022] Open
Abstract
Macrophages are a major target for human immunodeficiency virus type 1 (HIV-1) infection. However, macrophages are largely heterogeneous and may exhibit differences in permissiveness to HIV-1 infection. This study highlights the interplay of macrophage heterogeneity in HIV-1 pathogenesis. We show that monocyte-derived macrophages (MDMs) could be divided into two distinct subsets: CD14+Siglec-1hiCD4+ (non-adherent MDM) and CD14+Siglec-1LoCD4− (adherent MDM). The CD14+Siglec-1hiCD4+MDM subset represented the smaller proportion in the macrophage pool, and varied among different donors. Fractionation and subsequent exposure of the two MDM subsets to HIV-1 revealed opposite outcomes in terms of HIV-1 capture and infection. Although the CD14+Siglec-1hiCD4+MDM captured significantly more HIV-1, infection was significantly higher in the CD14+Siglec-1LoCD4−MDM subset. Thus, CD14+Siglec-1hiCD4+MDM were less permissive to infection. Depletion of CD14+Siglec-1hiCD4+MDM or a decrease in their percentage, resulted in increased infection of MDM, suggestive of a capacity of these cells to capture and sequester HIV-1 in an environment that hinders its infectivity. Increased expression of innate restriction factors and cytokine genes were observed in the non-adherent CD14+Siglec-1hiCD4+MDM, both before and after HIV-1 infection, compared to the adherent CD14+Siglec-1LoCD4−MDM. We speculate that the differential expression of gene expression profiles in the two macrophage subsets may provide an explanation for the differences observed in HIV-1 infectivity.
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Affiliation(s)
- Ousman Jobe
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States.,Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Jiae Kim
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States.,Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Eric Tycksen
- Genome Technology Access Center, Department of Genetics, Washington University in St. Louis, St. Louis, MO, United States
| | - Sayali Onkar
- U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States.,Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Nelson L Michael
- Laboratory of Molecular Virology and Pathogenesis, Host Genetics Section, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Carl R Alving
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Mangala Rao
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
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22
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Jobe O, Kim J, Rao M. The role of Siglec-1 in HIV-1/macrophage interaction. Macrophage (Houst) 2016; 3:e1435. [PMID: 28286869 PMCID: PMC5341613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although CD4 T-cells are a major target for HIV, recent work has demonstrated the ability of macrophages despite expressing relatively low levels of CD4, to be a target of the virus. Our recent study has found that the presence of growth factors not only play a role in the phenotype of these monocyte-derived-macrophages, but also are an important aspect of the permissiveness of these cells to infection. The work utilized cellular and biophysical methods to examine Siglec-1 on macrophages as a primary receptor in HIV-1 infection. These findings support the notion that Siglec-1 and macrophages and their interactions with the HIV-1 envelope should be considered in HIV-1 vaccine development.
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Affiliation(s)
- Ousman Jobe
- Henry M. Jackson Foundation for the Advancement of Military Medicine, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, 20910, USA
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, 20910, USA
| | - Jiae Kim
- Henry M. Jackson Foundation for the Advancement of Military Medicine, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, 20910, USA
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, 20910, USA
| | - Mangala Rao
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, 20910, USA
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23
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Wilhelm TR, Taddeo A, Winter O, Schulz AR, Mälzer JN, Domingo C, Biesen R, Alexander T, Thiel A, Radbruch A, Hiepe F, Gerl V. Siglec-1-positive plasmacytoid dendritic cells (pDCs) in human peripheral blood: A semi-mature and myeloid-like subset imbalanced during protective and autoimmune responses. Clin Immunol 2015; 163:42-51. [PMID: 26674280 DOI: 10.1016/j.clim.2015.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 11/27/2015] [Accepted: 12/02/2015] [Indexed: 10/22/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) play a central role in the pathogenesis of systemic lupus erythematosus (SLE) as IFN-α producers and promoters of T-cell activation or tolerance. Here, we demonstrated by flow-cytometry and confocal microscopy that Siglec-1, a molecule involved in the regulation of adaptive immunoresponses, is expressed in a subset of semi-mature, myeloid-like pDCs in human blood. These pDCs express lower BDCA-2 and CD123 and higher HLA-DR and CD11c than Siglec-1-negative pDCs and do not produce IFN-α via TLR7/TLR9 engagement. In vitro, Siglec-1 expression was induced in Siglec-1-negative pDCs by influenza virus. Proportions of Siglec-1-positive/Siglec-1-negative pDCs were higher in SLE than in healthy controls and correlated with disease activity. Healthy donors immunized with yellow fever vaccine YFV-17D displayed different kinetics of the two pDC subsets during protective immune response. PDCs can be subdivided into two subsets according to Siglec-1 expression. These subsets may play specific roles in (auto)immune responses.
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Affiliation(s)
| | - Adriano Taddeo
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany; German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Oliver Winter
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany; German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Axel Ronald Schulz
- Regenerative Immunology and Aging, Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité University Medicine CVK, Augustenburger Platz 1, 13353, Berlin, Germany; German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Julia-Nora Mälzer
- Regenerative Immunology and Aging, Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité University Medicine CVK, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Cristina Domingo
- Center for Biological Threats and Special Pathogens 1, Robert Koch-Institute, Nordufer 20, 13353, Berlin, Germany
| | - Robert Biesen
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany
| | - Tobias Alexander
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany
| | - Andreas Thiel
- Regenerative Immunology and Aging, Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité University Medicine CVK, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Andreas Radbruch
- German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Falk Hiepe
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany; German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany
| | - Velia Gerl
- Department of Rheumatology and Clinical Immunology, Charité University Hospital, Charitéplatz 1, 10117, Berlin, Germany; German Rheumatism Research Centre (DRFZ) - a Leibniz Institute, Charitéplatz 1, 10117, Berlin, Germany.
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24
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Morón-López S, Gómez-Mora E, Salgado M, Ouchi D, Puertas MC, Urrea V, Navarro J, Jou A, Pérez M, Tural C, Clotet B, Montaner LJ, Blanco J, Crespo M, Martinez-Picado J. Short-term Treatment With Interferon Alfa Diminishes Expression of HIV-1 and Reduces CD4+ T-Cell Activation in Patients Coinfected With HIV and Hepatitis C Virus and Receiving Antiretroviral Therapy. J Infect Dis 2015; 213:1008-12. [PMID: 26525407 DOI: 10.1093/infdis/jiv521] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 10/22/2015] [Indexed: 11/12/2022] Open
Abstract
Long-term treatment with interferon (IFN) alfa plus ribavirin decreases the proviral human immunodeficiency virus type 1 (HIV) DNA level. However, the short-term impact of IFN alfa on persistent HIV and its effects on immune activation after antiretroviral therapy remain unknown. Our study showed that the cell-associated HIV RNA level and CD4(+) T-cell activation decreased in the IFN group (n = 10). No changes were detected in levels of residual plasma viremia, replication-competent reservoirs, proviral DNA, or 2-long-terminal repeat circles, although APOBEC3G, TRIM5α, BST2, and TRIM22 were upregulated in the IFN group. These data suggest that short-term treatment with IFN alfa combined with RBV decreases HIV expression, in part through inhibition of HIV transcription by TRIM22 and decrease in T-cell activation.
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Affiliation(s)
- Sara Morón-López
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Elisabet Gómez-Mora
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Maria Salgado
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Dan Ouchi
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Maria C Puertas
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Víctor Urrea
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona
| | - Jordi Navarro
- Infectious Diseases Department, Hospital Universitari Vall d'Hebron
| | - Antoni Jou
- Fundació Lluita Contra la SIDA, Badalona
| | - Mercedes Pérez
- Infectious Diseases Department, Hospital Universitari Vall d'Hebron
| | | | - Bonaventura Clotet
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona Fundació Lluita Contra la SIDA, Badalona Universitat de Vic-Universitat Central de Catalunya, Vic, Spain
| | | | - Julià Blanco
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona Universitat de Vic-Universitat Central de Catalunya, Vic, Spain
| | - Manuel Crespo
- Infectious Diseases Department, Hospital Universitari Vall d'Hebron
| | - Javier Martinez-Picado
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Cièncias de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona Institució Catalana de Recerca i Estudis Avançats, Barcelona Universitat de Vic-Universitat Central de Catalunya, Vic, Spain
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Kobiyama K, Aoshi T, Narita H, Kuroda E, Hayashi M, Tetsutani K, Koyama S, Mochizuki S, Sakurai K, Katakai Y, Yasutomi Y, Saijo S, Iwakura Y, Akira S, Coban C, Ishii KJ. Nonagonistic Dectin-1 ligand transforms CpG into a multitask nanoparticulate TLR9 agonist. Proc Natl Acad Sci U S A 2014; 111:3086-91. [PMID: 24516163 DOI: 10.1073/pnas.1319268111] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
CpG DNA, a ligand for Toll-like receptor 9 (TLR9), has been one of the most promising immunotherapeutic agents. Although there are several types of potent humanized CpG oligodeoxynucleotide (ODN), developing "all-in-one" CpG ODNs activating both B cells and plasmacytoid dendritic cells forming a stable nanoparticle without aggregation has not been successful. In this study, we generated a novel nanoparticulate K CpG ODN (K3) wrapped by the nonagonistic Dectin-1 ligand schizophyllan (SPG), K3-SPG. In sharp contrast to K3 alone, K3-SPG stimulates human peripheral blood mononuclear cells to produce a large amount of both type I and type II IFN, targeting the same endosome where IFN-inducing D CpG ODN resides without losing its K-type activity. K3-SPG thus became a potent adjuvant for induction of both humoral and cellular immune responses, particularly CTL induction, to coadministered protein antigens without conjugation. Such potent adjuvant activity of K3-SPG is attributed to its nature of being a nanoparticle rather than targeting Dectin-1 by SPG, accumulating and activating antigen-bearing macrophages and dendritic cells in the draining lymph node. K3-SPG acting as an influenza vaccine adjuvant was demonstrated in vivo in both murine and nonhuman primate models. Taken together, K3-SPG may be useful for immunotherapeutic applications that require type I and type II IFN as well as CTL induction.
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Xiong YS, Cheng Y, Lin QS, Wu AL, Yu J, Li C, Sun Y, Zhong RQ, Wu LJ. Increased expression of Siglec-1 on peripheral blood monocytes and its role in mononuclear cell reactivity to autoantigen in rheumatoid arthritis. Rheumatology (Oxford) 2013; 53:250-9. [PMID: 24196391 DOI: 10.1093/rheumatology/ket342] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Elevated expression of Siglec-1 on circulating monocytes has been reported in some inflammatory and autoimmune diseases, but its expression and role in RA has not been elucidated. The aims of this study were to determine the expression of Siglec-1 in peripheral blood and to explore its role in mononuclear cell reactivity to autoantigen in RA. METHODS Siglec-1 protein and mRNA levels in 42 RA patients, 39 OA patients, 28 SLE patients and 42 normal controls were determined by flow cytometry and quantitative RT-PCR, respectively. In addition, 10 patients with active RA received DMARDs for 12 weeks and the frequencies of Siglec-1-positive cells and the 28-joint DAS (DAS28) were assessed before and after therapy. Furthermore, TNF-α, IFN-γ and type II collagen were used to up-regulate Siglec-1. Peripheral blood mononuclear cells (PBMCs) from different groups were stimulated with mitogens or antigens and cell proliferation and cytokine production were determined. RESULTS The protein and mRNA levels of Siglec-1 on PBMCs and monocytes in RA patients were significantly higher than those in OA patients and healthy controls. Moreover, the expression of Siglec-1 protein on PBMCs was positively correlated with DAS28, ESR, high-sensitivity CRP and IgM-RF, but not with anti-CCP antibody. Interestingly, Siglec-1 expression was decreased in parallel with the decrease in the DAS28 after 12 weeks of anti-rheumatic treatment. Furthermore, TNF-α, IFN-γ and type II collagen can up-regulate Siglec-1 in PBMCs. Elevated PBMC proliferation and proinflammatory cytokine production to collagen stimulation in RA patients decreased when Siglec-1 was inhibited by anti-Siglec-1 antibodies. CONCLUSION Elevated Siglec-1 expression in PBMCs and monocytes can potentially serve as a biomarker for monitoring disease activity in RA. Siglec-1 may also play a proinflammatory role in stimulating lymphocyte proliferation and activation in RA.
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Affiliation(s)
- Yi-Song Xiong
- Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, 415 Feng Yang Road, Huang Pu District, Shanghai 200003, China.
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Ooms K, Van Gorp H, Botti S, Van Gaever T, Delputte PL, Nauwynck HJ. Evaluation of viral peptide targeting to porcine sialoadhesin using a porcine reproductive and respiratory syndrome virus vaccination-challenge model. Virus Res 2013; 177:147-55. [PMID: 23932898 DOI: 10.1016/j.virusres.2013.07.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 07/22/2013] [Accepted: 07/29/2013] [Indexed: 10/26/2022]
Abstract
Targeting antigens to professional antigen presenting cells resident at the sites where effective immune responses are generated is a promising vaccination strategy. As such, targeting sialoadhesin (Sn)-expressing macrophages, abundantly present in spleen and lymph nodes where they appear to be strategically placed for antigen capture and processing, is recently gaining increased attention. Previously, we have shown that humoral immune responses to the model antigen human serum albumin can be enhanced by using a porcine Sn-specific monoclonal antibody to target the model antigen to Sn-expressing macrophages. To date however, no studies have been performed to evaluate whether targeted delivery of a pathogen-derived antigen can enhance the pathogen-specific immune response. Therefore, we selected a linear epitope on glycoprotein 4 of porcine reproductive and respiratory syndrome virus (PRRSV), which is known to be a target of virus-neutralizing antibodies. This paper reports on the targeted delivery of this viral peptide to porcine Sn-expressing macrophages and the evaluation of the subsequent immune response in a vaccination-challenge set-up. Four copies of the selected PRRSV epitope were genetically fused to a previously developed porcine Sn-targeting recombinant antibody or an irrelevant isotype control. Fusion proteins were shown to be efficiently purified from HEK293T cell supernatants and subsequently, only Sn-specific fusion proteins were shown to bind to and to be internalized into Sn-expressing cells. Subsequent immunizations with a single dose of the fusion proteins showed that peptide-specific immune responses and neutralizing antibody responses after PRRSV challenge were enhanced in animals receiving a single 500 μg intramuscular dose of the Sn-targeting fusion protein, although correlations between the two read-outs were hard to effectuate. Furthermore, a minor beneficial effect on viral clearance was observed. Together, these data show that viral peptide targeting to porcine Sn-expressing macrophages can improve the anti-viral immune response, although more research will be needed to further explore vaccination potential.
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Affiliation(s)
- Karen Ooms
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
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