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Moussavi-Harami SF, Cleary SJ, Magnen M, Seo Y, Conrad C, English BC, Qiu L, Wang KM, Abram CL, Lowell CA, Looney MR. Loss of neutrophil Shp1 produces hemorrhagic and lethal acute lung injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.23.595575. [PMID: 38854059 PMCID: PMC11160570 DOI: 10.1101/2024.05.23.595575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
The acute respiratory distress syndrome (ARDS) is associated with significant morbidity and mortality and neutrophils are critical to its pathogenesis. Neutrophil activation is closely regulated by inhibitory tyrosine phosphatases including Src homology region 2 domain containing phosphatase-1 (Shp1). Here, we report that loss of neutrophil Shp1 in mice produced hyperinflammation and lethal pulmonary hemorrhage in sterile inflammation and pathogen-induced models of acute lung injury (ALI) through a Syk kinase-dependent mechanism. We observed large intravascular neutrophil clusters, perivascular inflammation, and excessive neutrophil extracellular traps in neutrophil-specific Shp1 knockout mice suggesting an underlying mechanism for the observed pulmonary hemorrhage. Targeted immunomodulation through the administration of a Shp1 activator (SC43) reduced agonist-induced reactive oxygen species in vitro and ameliorated ALI-induced alveolar neutrophilia and NETs in vivo. We propose that the pharmacologic activation of Shp1 has the potential to fine-tune neutrophil hyperinflammation that is central to the pathogenesis of ARDS.
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Affiliation(s)
- S F Moussavi-Harami
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of California, San Francisco
| | - S J Cleary
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - M Magnen
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - Y Seo
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - C Conrad
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - B C English
- Department of Microbiology & Immunology, University of California, San Francisco
- CoLabs, University of California, San Francisco
| | - L Qiu
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - K M Wang
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
| | - C L Abram
- Department of Laboratory Medicine, University of California, San Francisco
| | - C A Lowell
- Department of Laboratory Medicine, University of California, San Francisco
| | - M R Looney
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco
- Department of Laboratory Medicine, University of California, San Francisco
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2
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Wang C, Zhang Y, Shen A, Tang T, Li N, Xu C, Liu B, Lv L. Mincle receptor in macrophage and neutrophil contributes to the unresolved inflammation during the transition from acute kidney injury to chronic kidney disease. Front Immunol 2024; 15:1385696. [PMID: 38770013 PMCID: PMC11103384 DOI: 10.3389/fimmu.2024.1385696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/10/2024] [Indexed: 05/22/2024] Open
Abstract
Background Recent studies have demonstrated a strong association between acute kidney injury (AKI) and chronic kidney disease (CKD), while the unresolved inflammation is believed to be a driving force for this chronic transition process. As a transmembrane pattern recognition receptor, Mincle (macrophage-inducible C-type lectin, Clec4e) was identified to participate in the early immune response after AKI. However, the impact of Mincle on the chronic transition of AKI remains largely unclear. Methods We performed single-cell RNA sequencing (scRNA-seq) with the unilateral ischemia-reperfusion (UIR) murine model of AKI at days 1, 3, 14 and 28 after injury. Potential effects and mechanism of Mincle on renal inflammation and fibrosis were further validated in vivo utilizing Mincle knockout mice. Results The dynamic expression of Mincle in macrophages and neutrophils throughout the transition from AKI to CKD was observed. For both cell types, Mincle expression was significantly up-regulated on day 1 following AKI, with a second rise observed on day 14. Notably, we identified distinct subclusters of Minclehigh neutrophils and Minclehigh macrophages that exhibited time-dependent influx with dual peaks characterized with remarkable pro-inflammatory and pro-fibrotic functions. Moreover, we identified that Minclehigh neutrophils represented an "aged" mature neutrophil subset derived from the "fresh" mature neutrophil cluster in kidney. Additionally, we observed a synergistic mechanism whereby Mincle-expressing macrophages and neutrophils sustained renal inflammation by tumor necrosis factor (TNF) production. Mincle-deficient mice exhibited reduced renal injury and fibrosis following AKI. Conclusion The present findings have unveiled combined persistence of Minclehigh neutrophils and macrophages during AKI-to-CKD transition, contributing to unresolved inflammation followed by fibrosis via TNF-α as a central pro-inflammatory cytokine. Targeting Mincle may offer a novel therapeutic strategy for preventing the transition from AKI to CKD.
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Affiliation(s)
| | | | | | | | | | | | | | - Linli Lv
- Institute of Nephrology, Zhongda Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
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3
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Nunes S, Tibúrcio R, Bonyek-Silva I, Oliveira PR, Khouri R, Boaventura V, Barral A, Brodskyn C, Tavares NM. Transcriptome Analysis Identifies the Crosstalk between Dendritic and Natural Killer Cells in Human Cutaneous Leishmaniasis. Microorganisms 2023; 11:1937. [PMID: 37630497 PMCID: PMC10459107 DOI: 10.3390/microorganisms11081937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Skin ulcers of cutaneous leishmaniasis (CL) are characterized by a localized inflammatory response mediated by innate and adaptive immune cells, including dendritic cells (DC) and natural killer (NK) cells. Bidirectional interactions between DCs and NK cells contribute to tailor leishmaniasis outcome. Despite advances in the Leishmania biology field in recent decades, the mechanisms involved in DC/NK-mediated control of Leishmania sp. pathogenesis as well as the cellular and molecular players involved in such interaction remain unclear. The present study sought to investigate canonical pathways associated with CL arising from Leishmania braziliensis infection. Initially, two publicly available microarray datasets of skin biopsies from active CL lesions were analyzed, and five pathways were identified using differentially expressed genes. The "Crosstalk between DCs and NK cells" pathway was notable due to a high number of modulated genes. The molecules significantly involved in this pathway were identified, and our findings were validated in newly obtained CL biopsies. We found increased expression of TLR4, TNFRSF1B, IL-15, IL-6, CD40, CCR7, TNF and IFNG, confirming the analysis of publicly available datasets. These findings reveal the "crosstalk between DCs and NK cells" as a potential pathway to be further explored in the pathogenesis of CL, especially the expression of CCR7, which is correlated with lesion development.
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Affiliation(s)
- Sara Nunes
- Laboratory of Parasite-Host Interaction and Epidemiology (LaIPHE), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil; (S.N.); (R.T.); (C.B.)
| | - Rafael Tibúrcio
- Laboratory of Parasite-Host Interaction and Epidemiology (LaIPHE), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil; (S.N.); (R.T.); (C.B.)
| | - Icaro Bonyek-Silva
- Baiano Federal Institute (IFBaiano), Xique-Xique 47400-000, Bahia, Brazil;
| | - Pablo Rafael Oliveira
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
| | - Ricardo Khouri
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
- Laboratory of Infectious Diseases Transmitted by Vectors (LEITV), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil
| | - Viviane Boaventura
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
- Laboratory of Infectious Diseases Transmitted by Vectors (LEITV), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil
| | - Aldina Barral
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
- Laboratory of Infectious Diseases Transmitted by Vectors (LEITV), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil
| | - Cláudia Brodskyn
- Laboratory of Parasite-Host Interaction and Epidemiology (LaIPHE), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil; (S.N.); (R.T.); (C.B.)
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
| | - Natalia Machado Tavares
- Laboratory of Parasite-Host Interaction and Epidemiology (LaIPHE), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador 40296-710, Bahia, Brazil; (S.N.); (R.T.); (C.B.)
- Biology Institute (IBIO), Federal University of Bahia (UFBA), Salvador 40170-115, Bahia, Brazil; (P.R.O.); (R.K.); (V.B.); (A.B.)
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Laassili C, Ben El Hend F, Benzidane R, Oumeslakht L, Aziz AI, El Fatimy R, Bensussan A, Ben Mkaddem S. Fc receptors act as innate immune receptors during infection? Front Immunol 2023; 14:1188497. [PMID: 37564652 PMCID: PMC10410254 DOI: 10.3389/fimmu.2023.1188497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/05/2023] [Indexed: 08/12/2023] Open
Abstract
Innate immunity constitutes the first nonspecific immunological line of defense against infection. In this response, a variety of mechanisms are activated: the complement system, phagocytosis, and the inflammatory response. Then, adaptive immunity is activated. Major opsonization mediators during infections are immunoglobulins (Igs), the function of which is mediated through Fc receptors (FcRs). However, in addition to their role in adaptive immunity, FcRs have been shown to play a role in innate immunity by interacting directly with bacteria in the absence of their natural ligands (Igs). Additionally, it has been hypothesized that during the early phase of bacterial infection, FcRs play a protective role via innate immune functions mediated through direct recognition of bacteria, and as the infection progresses to later phases, FcRs exhibit their established function as receptors in adaptive immunity. This review provides detailed insight into the potential role of FcRs as innate immune mediators of the host defense against bacterial infection independent of opsonins.
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Affiliation(s)
- Chaimaa Laassili
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Fatiha Ben El Hend
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Riad Benzidane
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Loubna Oumeslakht
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Abdel-Ilah Aziz
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Rachid El Fatimy
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Armand Bensussan
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
- INSERM U976, Université de Paris, Hôpital Saint Louis, Paris, France
- Institut Jean Godinot, Centre de Lutte Contre le Cancer, Reims, France
| | - Sanae Ben Mkaddem
- Faculty of Medical Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
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5
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Yadav M, Akhtar MN, Mishra M, Kumar S, Kumar R, Shubham, Nandal A, Sen P. Leishmania donovani Attenuates Dendritic Cell Trafficking to Lymph Nodes by Inhibiting C-Type Lectin Receptor 2 Expression via Transforming Growth Factor-β. Microbiol Spectr 2023; 11:e0412222. [PMID: 37125906 PMCID: PMC10269552 DOI: 10.1128/spectrum.04122-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 04/10/2023] [Indexed: 05/02/2023] Open
Abstract
To initiate an antileishmanial adaptive immune response, dendritic cells (DCs) must carry Leishmania antigens from peripheral tissues to local draining lymph nodes. However, the migratory capacity of DCs is largely compromised during Leishmania donovani infection. The molecular mechanism underlying this defective DC migration is not yet fully understood. Here, we demonstrate that L. donovani infection impaired the lymph node homing ability of DCs by decreasing C-type lectin receptor 2 (CLEC-2) expression. L. donovani exerted this inhibitory effect by inducing transforming growth factor-β (TGF-β) secretion from DCs. Indeed, TGF-β produced in this manner inhibited nuclear factor-κB (NF-κB)-mediated CLEC-2 expression on DCs by activating c-Src. Notably, suppression of c-Src expression significantly improved the arrival of DCs in draining lymph nodes by preventing L. donovani-induced CLEC-2 downregulation on DCs. These findings reveal a unique mechanism by which L. donovani inhibits DC migration to lymph nodes and suggest a key role for TGF-β, c-Src, and CLEC-2 in regulating this process. IMPORTANCE Dendritic cells (DCs) play a key role in initiating T cell-mediated protective immunity against visceral leishmaniasis (VL), the second most lethal parasitic disease in the world. However, the T cell-inducing ability of DCs critically depends on the extent of DC migration to regional lymph nodes. Notably, the migration of DCs is reported to be impaired during VL. The cause of this impaired DC migration, however, remains ill-defined. Here, we provide the first evidence that L. donovani, the causative agent of VL, attenuates the lymph node homing capacity of DCs by decreasing C-type lectin receptor 2 (CLEC-2) expression on DCs. Additionally, we have demonstrated how L. donovani mediates this inhibitory effect. Overall, our work has revealed a unique mechanism underlying L. donovani-induced impairment of DC migration and suggests a potential strategy to improve antileishmanial T cell activity by increasing DC arrival in lymph nodes.
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Affiliation(s)
- Manisha Yadav
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
| | - Md. Naushad Akhtar
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
| | - Manish Mishra
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
| | - Sandeep Kumar
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Raj Kumar
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
| | - Shubham
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Anil Nandal
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
| | - Pradip Sen
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research—Institute of Microbial Technology, Chandigarh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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6
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Kottom TJ, Carmona EM, Schaefbauer K, Limper AH. CLEC4A and CLEC12B C-type lectin receptors mediate interactions with Pneumocystis cell wall components. J Med Microbiol 2023; 72. [PMID: 37294293 DOI: 10.1099/jmm.0.001714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
Introduction. C-type lectin receptors (CLRs) are prominently expressed on myeloid cells where they perform multiple functions including serving as pattern recognition receptors (PRRs) to drive innate as well as adaptive immunity to pathogens. Depending on the presence of a tyrosine-based signalling motif, CLR-microbial pathogen engagement may result in either anti- or pro-inflammatory signalling.Impact statement. In this manuscript, we report our laboratory study of two novel CLRs that recognize Pneumocystis murina cell wall homogenates (CWH) and a purified Pneumocystis carinii cell wall fraction (CWF).Aim. To study the potential of newly generated hFc-CLR fusions on binding to Pneumocystis murina CWHs and P. carinii CWFs and subsequent downstream inflammatory signalling analysis.Methods. Newly generated hFc-CLR fusion CLEC4A and CLEC12B were screened against P. murina CWHs and P. carinii CWFs preparations via modified ELISA. Immunofluorescence assay (IFA) was utilized to visualize hFc-CLR fusion binding against intact fixed fungal life forms to verify results. Quantitative PCR (q-PCR) analysis of lung mRNA from the mouse immunosuppressed Pneumocystis pneumonia (PCP) model versus uninfected mice was employed to detect possible changes in the respective Clec4a and Clec12b transcripts. Lastly, siRNA technology of both CLRs was conducted to determine effects on downstream inflammatory events in mouse macrophages stimulated in the presence of P. carinii CWFs.Results. We determined that both CLEC4A and CLEC12B hFc-CLRs displayed significant binding with P. murina CWHs and P. carinii CWFs. Binding events showed significant binding to both curdlan and laminarin, both polysaccharides containing β-(1,3) glucans as well as N-acetylglucosamine (GlcNAc) residues and modest yet non-significant binding to the negative control carbohydrate dextran. IFA with both CLR hFc-fusions against whole P. murina life forms corroborated these findings. Lastly, we surveyed the mRNA expression profiles of both CLRs tested above in the mouse immunosuppressed Pneumocystis pneumonia (PCP) model and determined that both CLRs were significantly up regulated during infection. Lastly, siRNA of both CLRs in the mouse RAW macrophage cell line was conducted and results demonstrated that silencing of Clec4a resulted in no significant changes in TNF-alpha generation in P. carinii CWF stimulated macrophages. On the contrary, silencing of Clec12b CLR resulted in significant decreases in TNF-alpha in RAW cells stimulated with the same CWF.Conclusion. The data presented here provide new members of the CLRs family recognizing Pneumocystis. Future studies using CLEC4A and/or CLEC12B deficient mice in the PCP mouse model should provide further insights into the host immunological response to Pneumocystis.
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Affiliation(s)
- Theodore J Kottom
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, Minnesota, 55905, USA
| | - Eva M Carmona
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, Minnesota, 55905, USA
| | - Kyle Schaefbauer
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, Minnesota, 55905, USA
| | - Andrew H Limper
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, Minnesota, 55905, USA
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7
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Watanabe M, Motooka D, Yamasaki S. The kinetics of signaling through the common FcRγ chain determine cytokine profiles in dendritic cells. Sci Signal 2023; 16:eabn9909. [PMID: 36881655 DOI: 10.1126/scisignal.abn9909] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The common Fc receptor γ (FcRγ) chain is a signaling subunit common to several immune receptors, but cellular responses induced by FcRγ-coupled receptors are diverse. We investigated the mechanisms by which FcRγ generates divergent signals when coupled to Dectin-2 and Mincle, structurally similar C-type lectin receptors that induce the release of different cytokines from dendritic cells. Chronological tracing of transcriptomic and epigenetic changes upon stimulation revealed that Dectin-2 induced early and strong signaling, whereas Mincle-mediated signaling was delayed, which reflects their expression patterns. Generation of early and strong FcRγ-Syk signaling by engineered chimeric receptors was sufficient to recapitulate a Dectin-2-like gene expression profile. Early Syk signaling selectively stimulated the activity of the calcium ion-activated transcription factor NFAT, which rapidly altered the chromatin status and transcription of the Il2 gene. In contrast, proinflammatory cytokines, such as TNF, were induced regardless of FcRγ signaling kinetics. These results suggest that the strength and timing of FcRγ-Syk signaling can alter the quality of cellular responses through kinetics-sensing signaling machineries.
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Affiliation(s)
- Miyuki Watanabe
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan.,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka 565-0871, Japan
| | - Sho Yamasaki
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan.,Center for Infectious Disease Education and Research (CiDER), Osaka University, Osaka 565-0871, Japan.,Division of Molecular Design, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan.,Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba 260-8673, Japan
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8
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Blamberg R, Lang R. The early bird catches the IL-2 in C-type lectin receptor-dependent activation of dendritic cells. Sci Signal 2023; 16:eadg4314. [PMID: 36881654 DOI: 10.1126/scisignal.adg4314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The transcriptional response of macrophages and dendritic cells to stimulation of pattern recognition receptors can be unexpectedly distinct. In this issue of Science Signaling, Watanabe et al. demonstrate that IL-2 is differentially induced by the closely related C-type lectin receptors Dectin-2 and Mincle and reveal early signaling through the adaptor protein FcRγ as a critical mechanism.
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Affiliation(s)
- Robert Blamberg
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - Roland Lang
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen 91054, Germany
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9
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Research progress on Mincle as a multifunctional receptor. Int Immunopharmacol 2023; 114:109467. [PMID: 36436471 DOI: 10.1016/j.intimp.2022.109467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/25/2022] [Accepted: 11/13/2022] [Indexed: 11/25/2022]
Abstract
Macrophage-induced C-type lectin (Mincle), a lipopolysaccharide-induced protein, is widely expressed on antigen-presenting cells. Mincle acts as a pattern recognition receptor that recognizes pathogen-associated molecular patterns of pathogens such as bacteria and fungi, mainly glycolipids, which induces an acquired immune response against microbial infection. Interestingly, Mincle can also identify patterns of lipid damage-associated molecule patterns released by injured cells, such as Sin3-associated protein 130 and β-glucosylceramides, which induces sterile inflammation and ultimately accelerates the progression of stroke, obesity, hepatitis, kidney injury, autoimmune diseases and tumors by promoting tissue inflammation. This article will review the various functions of Mincle, such as mediating sterile inflammation of tissues to accelerate disease progression, initiating immune responses to fight infection and promoting tumor progression.
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10
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Scur M, Parsons BD, Dey S, Makrigiannis AP. The diverse roles of C-type lectin-like receptors in immunity. Front Immunol 2023; 14:1126043. [PMID: 36923398 PMCID: PMC10008955 DOI: 10.3389/fimmu.2023.1126043] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 02/14/2023] [Indexed: 03/03/2023] Open
Abstract
Our understanding of the C-type lectin-like receptors (CTLRs) and their functions in immunity have continued to expand from their initial roles in pathogen recognition. There are now clear examples of CTLRs acting as scavenger receptors, sensors of cell death and cell transformation, and regulators of immune responses and homeostasis. This range of function reflects an extensive diversity in the expression and signaling activity between individual CTLR members of otherwise highly conserved families. Adding to this diversity is the constant discovery of new receptor binding capabilities and receptor-ligand interactions, distinct cellular expression profiles, and receptor structures and signaling mechanisms which have expanded the defining roles of CTLRs in immunity. The natural killer cell receptors exemplify this functional diversity with growing evidence of their activity in other immune populations and tissues. Here, we broadly review select families of CTLRs encoded in the natural killer cell gene complex (NKC) highlighting key receptors that demonstrate the complex multifunctional capabilities of these proteins. We focus on recent evidence from research on the NKRP1 family of CTLRs and their interaction with the related C-type lectin (CLEC) ligands which together exhibit essential immune functions beyond their defined activity in natural killer (NK) cells. The ever-expanding evidence for the requirement of CTLR in numerous biological processes emphasizes the need to better understand the functional potential of these receptor families in immune defense and pathological conditions.
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Affiliation(s)
- Michal Scur
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Brendon D Parsons
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Sayanti Dey
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Andrew P Makrigiannis
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
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11
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Gómez‐Escolar C, Serrano‐Navarro A, Benguria A, Dopazo A, Sánchez‐Cabo F, Ramiro AR. Single cell clonal analysis identifies an AID-dependent pathway of plasma cell differentiation. EMBO Rep 2022; 23:e55000. [PMID: 36205653 PMCID: PMC9724673 DOI: 10.15252/embr.202255000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/07/2022] Open
Abstract
Germinal centers (GC) are microstructures where B cells that have been activated by antigen can improve the affinity of their B cell receptors and differentiate into memory B cells (MBCs) or antibody-secreting plasma cells. Here, we have addressed the role of activation-induced deaminase (AID), which initiates somatic hypermutation and class switch recombination, in the terminal differentiation of GC B cells. By combining single cell transcriptome and immunoglobulin clonal analysis in a mouse model that traces AID-experienced cells, we have identified a novel subset of late-prePB cells (L-prePB), which shares the strongest clonal relationships with plasmablasts (PBs). Mice lacking AID have various alterations in the size and expression profiles of transcriptional clusters. We find that AID deficiency leads to a reduced proportion of L-prePB cells and severely impairs transitions between the L-prePB and the PB subsets. Thus, AID shapes the differentiation fate of GC B cells by enabling PB generation from a prePB state.
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Affiliation(s)
- Carmen Gómez‐Escolar
- B Lymphocyte Biology LabCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain
| | - Alvaro Serrano‐Navarro
- B Lymphocyte Biology LabCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain
| | - Alberto Benguria
- Genomics UnitCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain
| | - Ana Dopazo
- Genomics UnitCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain,CIBER de Enfermedades Cardiovasculares (CIBERCV)MadridSpain
| | - Fátima Sánchez‐Cabo
- Bioinformatics UnitCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain
| | - Almudena R Ramiro
- B Lymphocyte Biology LabCentro Nacional de Investigaciones Cardiovasculares (CNIC)MadridSpain
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12
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Leishmania donovani Impedes Antileishmanial Immunity by Suppressing Dendritic Cells via the TIM-3 Receptor. mBio 2022; 13:e0330921. [PMID: 35924848 PMCID: PMC9426438 DOI: 10.1128/mbio.03309-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
An immunological hallmark of visceral leishmaniasis (VL), caused by Leishmania donovani, is profound immunosuppression. However, the molecular basis for this immune dysfunction has remained ill defined. Since dendritic cells (DCs) normally initiate antileishmanial immune responses, we investigated whether DCs are dysregulated during L. donovani infection and assessed its role in immunosuppression. Accordingly, we determined the regulatory effect of L. donovani on DCs. Notably, it is still unclear whether L. donovani activates or suppresses DCs. In addition, the molecular mechanism and the relevant receptor (or receptors) mediating the immunoregulatory effect of L. donovani on DCs are largely undefined. Here, we report that L. donovani inhibited DC activation/maturation by transmitting inhibitory signals through the T cell immunoglobulin and mucin protein-3 (TIM-3) receptor and thereby suppressed antileishmanial immune responses. L. donovani in fact triggered TIM-3 phosphorylation in DCs, which in turn recruited and activated a nonreceptor tyrosine kinase, Btk. Btk then inhibited DC activation/maturation by suppressing the NF-κB pathway in an interleukin-10 (IL-10)-dependent manner. Treatment with TIM-3-specific blocking antibody or suppressed expression of TIM-3 or downstream effector Btk made DCs resistant to the inhibitory effects of L. donovani. Adoptive transfer experiments further demonstrated that TIM-3-mediated L. donovani-induced inhibition of DCs plays a crucial role in the suppression of the antileishmanial immune response in vivo. These findings identify TIM-3 as a new regulator of the antileishmanial immune response and demonstrate a unique mechanism for host immunosuppression associated with L. donovani infection. IMPORTANCE Visceral leishmaniasis (VL), a poverty-related disease caused by Leishmania donovani, is ranked by the World Health Organization as the second largest killer parasitic disease in the world. The protective immune response against VL is primarily regulated by dendritic cells (DCs), which upon activation/maturation initiate an antileishmanial immune response. However, it remains obscure whether L. donovani promotes or inhibits DC activation. In addition, the receptor through which L. donovani exerts immunoregulatory effect on DCs is ill defined. Here, we for the first time report that L. donovani inhibits DC activation and maturation via the T cell immunoglobulin and mucin protein-3 (TIM-3) receptor and thereby attenuates the capacity of DCs to trigger antileishmanial immune responses in vivo. In fact, we demonstrate here that suppression of TIM-3 expression in DCs augments antileishmanial immunity. Our study uncovers a unique mechanism by which L. donovani subverts host immune responses and suggests TIM-3 as a potential new target for immunotherapy against VL.
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13
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Liu S, Yan L, Zhang Y, Junaid M, Wang J. Toxicological effects of polystyrene nanoplastics and perfluorooctanoic acid to Gambusia affinis. FISH & SHELLFISH IMMUNOLOGY 2022; 127:1100-1112. [PMID: 35835386 DOI: 10.1016/j.fsi.2022.06.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Plastic pollution has attracted huge attention from public and scientific community in recent years. In the environment, nanoplastics (NPs, <100 nm) can interact with persistent organic pollutants (POPs) such as perfluorooctanoic acid (PFOA) and may exacerbate associated toxic impacts. The present study aims to explore the single and combined ecotoxicological effects of PFOA and polystyrene nanoplastics (PS-NPs, 80 nm) on the PI3K/AKT3 signaling pathway using a freshwater fish model Gambusia affinis. Fish were exposed individually to PS-NPs (200 μg/L) and PFOA (50, 500, 5000 μg/L) and their chemical mixtures for 96 h. Our results showed that the co-exposure significantly altered the mRNA relative expression of PI3K, AKT3, IKKβ and IL-1β, compared to corresponding single exposure and control groups, indicating that the PFOA-NP co-exposure can activate the PI3K/AKT3 signaling pathway. The bioinformatic analyses showed that AKT3 had more probes and exhibited a significantly sensitive correlation with DNA methylation, compared to other genes (PIK3CA, IKBKB, and IL1B). Further, the mRNA expressions of PIK3CA, AKT3, and IKBKB had a significant correlation with copy number variation (CNV) in human liver hepatocellular carcinoma (LIHC). And PIK3CA had the highest mutation rate among other genes of interest for LIHC. Moreover, AKT3 showed a relatively lower expression in TAM and CAF cells, compared to PIK3CA, IKBKB, and IL1B. Besides, hsa-mir-155-5p was closely correlated with AKT3, PIK3CA, IKBKB, and IL1B. In summary, these results provide evidence that NPs could enhance the carcinogenic effects of POPs on aquatic organisms and highlight possible targets of LIHC induced by PFOA-NP co-exposure.
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Affiliation(s)
- Shulin Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Lei Yan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Yanling Zhang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Muhammad Junaid
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jun Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning, 530007, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 528478, China.
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14
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Stephens M, Keane K, Roizes S, Liao S, Weid PYVD. Mincle-binding DNA aptamer demonstrates therapeutic potential in a model of inflammatory bowel disease. MOLECULAR THERAPY - NUCLEIC ACIDS 2022; 28:935-947. [PMID: 35782912 PMCID: PMC9207717 DOI: 10.1016/j.omtn.2022.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 05/12/2022] [Indexed: 10/25/2022]
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15
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Li M, Zhang R, Li J, Li J. The Role of C-Type Lectin Receptor Signaling in the Intestinal Microbiota-Inflammation-Cancer Axis. Front Immunol 2022; 13:894445. [PMID: 35619716 PMCID: PMC9127077 DOI: 10.3389/fimmu.2022.894445] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/04/2022] [Indexed: 12/13/2022] Open
Abstract
As a subset of pattern recognition receptors (PRRs), C-type lectin-like receptors (CLRs) are mainly expressed by myeloid cells as both transmembrane and soluble forms. CLRs recognize not only pathogen associated molecular patterns (PAMPs), but also damage-associated molecular patterns (DAMPs) to promote innate immune responses and affect adaptive immune responses. Upon engagement by PAMPs or DAMPs, CLR signaling initiates various biological activities in vivo, such as cytokine secretion and immune cell recruitment. Recently, several CLRs have been implicated as contributory to the pathogenesis of intestinal inflammation, which represents a prominent risk factor for colorectal cancer (CRC). CLRs function as an interface among microbiota, intestinal epithelial barrier and immune system, so we firstly discussed the relationship between dysbiosis caused by microbiota alteration and inflammatory bowel disease (IBD), then focused on the role of CLRs signaling in pathogenesis of IBD (including Mincle, Dectin-3, Dectin-1, DCIR, DC-SIGN, LOX-1 and their downstream CARD9). Given that CLRs mediate intricate inflammatory signals and inflammation plays a significant role in tumorigenesis, we finally highlight the specific effects of CLRs on CRC, especially colitis-associated cancer (CAC), hoping to open new horizons on pathogenesis and therapeutics of IBD and CAC.
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Affiliation(s)
- Muhan Li
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Gut Microbiota Translational Medicine Research, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Runfeng Zhang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Gut Microbiota Translational Medicine Research, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji Li
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Gut Microbiota Translational Medicine Research, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jingnan Li
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Gut Microbiota Translational Medicine Research, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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16
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Gupta AK, Das S, Kamran M, Ejazi SA, Ali N. The Pathogenicity and Virulence of Leishmania - interplay of virulence factors with host defenses. Virulence 2022; 13:903-935. [PMID: 35531875 PMCID: PMC9154802 DOI: 10.1080/21505594.2022.2074130] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Leishmaniasis is a group of disease caused by the intracellular protozoan parasite of the genus Leishmania. Infection by different species of Leishmania results in various host immune responses, which usually lead to parasite clearance and may also contribute to pathogenesis and, hence, increasing the complexity of the disease. Interestingly, the parasite tends to reside within the unfriendly environment of the macrophages and has evolved various survival strategies to evade or modulate host immune defense. This can be attributed to the array of virulence factors of the vicious parasite, which target important host functioning and machineries. This review encompasses a holistic overview of leishmanial virulence factors, their role in assisting parasite-mediated evasion of host defense weaponries, and modulating epigenetic landscapes of host immune regulatory genes. Furthermore, the review also discusses the diagnostic potential of various leishmanial virulence factors and the advent of immunomodulators as futuristic antileishmanial drug therapy.
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Affiliation(s)
- Anand Kumar Gupta
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Sonali Das
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Mohd Kamran
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Sarfaraz Ahmad Ejazi
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Nahid Ali
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
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17
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Geng F, Liu J, Yin C, Zhang S, Pan Y, Sun H. Porphyromonas gingivalis lipopolysaccharide induced RIPK3/MLKL-mediated necroptosis of oral epithelial cells and the further regulation in macrophage activation. J Oral Microbiol 2022; 14:2041790. [PMID: 35251521 PMCID: PMC8890547 DOI: 10.1080/20002297.2022.2041790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Necroptosis, a new type of regulated cell death with massive release of damage-associated molecular patterns (DAMPs), is involved in the pathogenesis of periodontitis. However, the role of necroptosis in oral epithelial cells and the following effect on macrophages activation remain unknown. Human immortalized oral epithelial cells were stimulated with Porphyromonas gingivalis lipopolysaccharide (LPS). Cell death was assessed while expressions of RIPK3/MLKL and toll-like receptors (TLRs) were evaluated. Necrosulfonamide (NSA), an inhibitor of MLKL was applied to block necroptosis. The expression of DAMPs and the epithelial connection protein were evaluated by qPCR and immunofluorescence, respectively. Immortalized human monocytes U937 were induced into the M0 or M2 subset, and influences of HIOECs-derived DAMPs on macrophage polarization as well as activation of the Mincle/SYK axis were assessed. P. gingivalis LPS could be recognized by TLR2 and regulates necroptosis of HIOECs by activating RIPK3/MLKL. NSA inhibited cell death of HIOECs, alleviated impaired epithelial connection, and inhibited expressions of DAMPs. Low dose of DAMPs derived from HIOECs promoted M2-like polarization by activating the Mincle/SYK axis, which was significantly suppressed with increased doses of DAMPs. P. gingivalis LPS destructed oral epithelial cells via RIPK3/MLKL-mediated necroptosis, which further regulated macrophage activation via DAMPs from oral epithelial cells.
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Affiliation(s)
- Fengxue Geng
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Junchao Liu
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Chengcheng Yin
- Center of Implant Dentistry School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Shuwei Zhang
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Yaping Pan
- Department of Periodontics and Oral Biology, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Hongchen Sun
- Department of Oral Pathology, China Medical University School of Stomatology, Shenyang, China
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18
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Kottom TJ, Carmona EM, Schaefbauer K, Limper AH. Additional C-type lectin receptors mediate interactions with Pneumocystis organisms and major surface glycoprotein. J Med Microbiol 2021; 70:001470. [PMID: 34889727 PMCID: PMC8744274 DOI: 10.1099/jmm.0.001470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Introduction. Pathogen-associated molecular patterns' (PAMPs) are microbial signatures that are recognized by host myeloid C-type lectin receptors (CLRs). These CLRs interact with micro-organisms via their carbohydrate recognition domains (CRDs) and engage signalling pathways within the cell resulting in pro-inflammatory and microbicidal responses.Gap statement. In this article, we extend our laboratory study of additional CLRs that recognize fungal ligands against Pneumocystis murina and Pneumocystis carinii and their purified major surface glycoproteins (Msgs).Aim. To study the potential of newly synthesized hFc-CLR fusions on binding to Pneumocystis and its Msg.Methods. A library of new synthesized hFc-CLR fusions was screened against Pneumocystis murina and Pneumocystis carinii organisms and their purified major surface glycoproteins (Msgs) found on the respective fungi via modified ELISA. Immunofluorescence assay (IFA) was implemented and quantified to verify results. mRNA expression analysis by quantitative PCR (q-PCR) was employed to detect respective CLRs found to bind fungal organisms in the ELISA and determine their expression levels in the mouse immunosuppressed Pneumocystis pneumonia (PCP) model.Results. We detected a number of the CLR hFc-fusions displayed significant binding with P. murina and P. carinii organisms, and similarly to their respective Msgs. Significant organism and Msg binding was observed for CLR members C-type lectin domain family 12 member A (CLEC12A), Langerin, macrophage galactose-type lectin-1 (MGL-1), and specific intracellular adhesion molecule-3 grabbing non-integrin homologue-related 3 (SIGNR3). Immunofluorescence assay (IFA) with the respective CLR hFc-fusions against whole P. murina life forms corroborated these findings. Lastly, we surveyed the mRNA expression profiles of the respective CLRs tested above in the mouse immunosuppressed Pneumocystis pneumonia (PCP) model and determined that macrophage galactose type C-type lectin (Mgl-1), implicated in recognizing terminal N-acetylgalactosamine (GalNAc) found in the glycoproteins of microbial pathogens was significantly up-regulated during infection.Conclusion. The data herein add to the growing list of CLRs recognizing Pneumocystis and provide insights for further study of organism/host immune cell interactions.
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Affiliation(s)
- Theodore J. Kottom
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, USA,*Correspondence: Theodore J. Kottom,
| | - Eva M. Carmona
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Kyle Schaefbauer
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Andrew H. Limper
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, USA
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19
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Willment JA. Fc-conjugated C-type lectin receptors: Tools for understanding host-pathogen interactions. Mol Microbiol 2021; 117:632-660. [PMID: 34709692 DOI: 10.1111/mmi.14837] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 12/24/2022]
Abstract
The use of soluble fusion proteins of pattern recognition receptors (PRRs) used in the detection of exogenous and endogenous ligands has helped resolve the roles of PRRs in the innate immune response to pathogens, how they shape the adaptive immune response, and function in maintaining homeostasis. Using the immunoglobulin (Ig) crystallizable fragment (Fc) domain as a fusion partner, the PRR fusion proteins are soluble, stable, easily purified, have increased affinity due to the Fc homodimerization properties, and consequently have been used in a wide range of applications such as flow cytometry, screening of protein and glycan arrays, and immunofluorescent microscopy. This review will predominantly focus on the recognition of pathogens by the cell membrane-expressed glycan-binding proteins of the C-type lectin receptor (CLR) subgroup of PRRs. PRRs bind to conserved pathogen-associated molecular patterns (PAMPs), such as glycans, usually located within or on the outer surface of the pathogen. Significantly, many glycans structures are identical on both host and pathogen (e.g. the Lewis (Le) X glycan), allowing the use of Fc CLR fusion proteins with known endogenous and/or exogenous ligands as tools to identify pathogen structures that are able to interact with the immune system. Screens of highly purified pathogen-derived cell wall components have enabled identification of many unique PAMP structures recognized by CLRs. This review highlights studies using Fc CLR fusion proteins, with emphasis on the PAMPs found in fungi, bacteria, viruses, and parasites. The structure and unique features of the different CLR families is presented using examples from a broad range of microbes whenever possible.
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Affiliation(s)
- Janet A Willment
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, UK
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20
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Torigoe S, Schutt CR, Yamasaki S. Immune discrimination of environmental spectrum through C-type lectin receptors. Int Immunol 2021; 33:847-851. [PMID: 34599808 DOI: 10.1093/intimm/dxab074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
Our bodies are continuously assaulted by infection and tissue damage; most of these injurious insults are primarily sensed by immune receptors to maintain tissue homeostasis. Although immune recognition of proteins or nucleic acids has been well characterized, the molecular mechanisms by which immune receptors discriminate lipids to elicit suitable immune responses remain elusive. Recent studies have demonstrated that the C-type lectin receptor (CLR) family functions as immune sensors for adjuvant lipids derived from pathogens and damaged-tissues, thereby promoting innate/acquired immunity. In this review, we will discuss how these receptors recognize lipid components to initiate appropriate, but sometimes deleterious, immune responses against environmental stimuli. We will also discuss an aspect of inhibitory CLRs; their ligands might reflect normal self which silences the immune response regarded as "silence"-associated molecular patterns or may be associated with escape strategies of pathogens as "evasion"-associated molecular patterns.
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Affiliation(s)
- Shota Torigoe
- Department of Molecular Immunology, Research Institute for Microbial Diseases (RIMD), Osaka University, Yamadaoka, Suita, Osaka, Japan
| | - Charles R Schutt
- Department of Molecular Immunology, Research Institute for Microbial Diseases (RIMD), Osaka University, Yamadaoka, Suita, Osaka, Japan
| | - Sho Yamasaki
- Department of Molecular Immunology, Research Institute for Microbial Diseases (RIMD), Osaka University, Yamadaoka, Suita, Osaka, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Yamadaoka, Suita, Osaka, Japan.,Division of Molecular Design, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan.,Laboratory of Molecular Immunology, Center for Infectious Disease Education and Research (CiDER), Osaka University, Yamadaoka, Suita, Osaka, Japan
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21
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TRIM31 facilitates K27-linked polyubiquitination of SYK to regulate antifungal immunity. Signal Transduct Target Ther 2021; 6:298. [PMID: 34362877 PMCID: PMC8342987 DOI: 10.1038/s41392-021-00711-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 07/03/2021] [Accepted: 07/14/2021] [Indexed: 12/13/2022] Open
Abstract
Spleen tyrosine kinase (SYK) is a non-receptor tyrosine kinase, which plays an essential role in both innate and adaptive immunity. However, the key molecular mechanisms that regulate SYK activity are poorly understood. Here we identified the E3 ligase TRIM31 as a crucial regulator of SYK activation. We found that TRIM31 interacted with SYK and catalyzed K27-linked polyubiquitination at Lys375 and Lys517 of SYK. This K27-linked polyubiquitination of SYK promoted its plasma membrane translocation and binding with the C-type lectin receptors (CLRs), and also prevented the interaction with the phosphatase SHP-1. Therefore, deficiency of Trim31 in bone marrow-derived dendritic cells (BMDCs) and macrophages (BMDMs) dampened SYK-mediated signaling and inhibited the secretion of proinflammatory cytokines and chemokines against the fungal pathogen Candida albicans infection. Trim31-/- mice were also more sensitive to C. albicans systemic infection than Trim31+/+ mice and exhibited reduced Th1 and Th17 responses. Overall, our study uncovered the pivotal role of TRIM31-mediated K27-linked polyubiquitination on SYK activation and highlighted the significance of TRIM31 in anti-C. albicans immunity.
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22
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Serrano-Coll H, Cardona-Castro N, Ramos AP, Llanos-Cuentas A. Innate immune response: ally or enemy in cutaneous leishmaniasis? Pathog Dis 2021; 79:6284792. [PMID: 34037758 DOI: 10.1093/femspd/ftab028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/24/2021] [Indexed: 12/27/2022] Open
Abstract
Cutaneous leishmaniasis (CL) is an infectious and neglected disease caused by parasites of the genus Leishmania, which produces a wide spectrum of cutaneous manifestations. CL research has shown that the innate immune activity of cells such as neutrophils, natural killers, macrophages, dendritic cells and the complement system are capable of controlling this infection. However, Leishmania can also modulate the immune activity of these cells to promote its own survival and proliferation at the intracellular level. This review discusses the role of the innate immune response in the control and spread of this infection.
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Affiliation(s)
- Héctor Serrano-Coll
- Grupo de Investigación en Ciencias de la Educación y de la Salud (ICES), UNISANGIL, San Gil, Colombia.,Instituto Colombiano de Medicina Tropical-Universidad CES, Medellín, Colombia
| | - Nora Cardona-Castro
- Instituto Colombiano de Medicina Tropical-Universidad CES, Medellín, Colombia
| | - Ana Pilar Ramos
- Instituto de Medicina Tropical "Alexander Von von Humboldt", Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Alejandro Llanos-Cuentas
- Instituto de Medicina Tropical "Alexander Von von Humboldt", Universidad Peruana Cayetano Heredia, Lima, Perú
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23
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Cueto FJ, Del Fresno C, Brandi P, Combes AJ, Hernández-García E, Sánchez-Paulete AR, Enamorado M, Bromley CP, Gomez MJ, Conde-Garrosa R, Mañes S, Zelenay S, Melero I, Iborra S, Krummel MF, Sancho D. DNGR-1 limits Flt3L-mediated antitumor immunity by restraining tumor-infiltrating type I conventional dendritic cells. J Immunother Cancer 2021; 9:e002054. [PMID: 33980589 PMCID: PMC8118081 DOI: 10.1136/jitc-2020-002054] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Conventional type 1 dendritic cells (cDC1s) are central to antitumor immunity and their presence in the tumor microenvironment associates with improved outcomes in patients with cancer. DNGR-1 (CLEC9A) is a dead cell-sensing receptor highly restricted to cDC1s. DNGR-1 has been involved in both cross-presentation of dead cell-associated antigens and processes of disease tolerance, but its role in antitumor immunity has not been clarified yet. METHODS B16 and MC38 tumor cell lines were inoculated subcutaneously into wild-type (WT) and DNGR-1-deficient mice. To overexpress Flt3L systemically, we performed gene therapy through the hydrodynamic injection of an Flt3L-encoding plasmid. To characterize the immune response, we performed flow cytometry and RNA-Seq of tumor-infiltrating cDC1s. RESULTS Here, we found that cross-presentation of tumor antigens in the steady state was DNGR-1-independent. However, on Flt3L systemic overexpression, tumor growth was delayed in DNGR-1-deficient mice compared with WT mice. Of note, this protection was recapitulated by anti-DNGR-1-blocking antibodies in mice following Flt3L gene therapy. This improved antitumor immunity was associated with Batf3-dependent enhanced accumulation of CD8+ T cells and cDC1s within tumors. Mechanistically, the deficiency in DNGR-1 boosted an Flt3L-induced specific inflammatory gene signature in cDC1s, including Ccl5 expression. Indeed, the increased infiltration of cDC1s within tumors and their protective effect rely on CCL5/CCR5 chemoattraction. Moreover, FLT3LG and CCL5 or CCR5 gene expression signatures correlate with an enhanced cDC1 signature and a favorable overall survival in patients with cancer. Notably, cyclophosphamide elevated serum Flt3L levels and, in combination with the absence of DNGR-1, synergized against tumor growth. CONCLUSION DNGR-1 limits the accumulation of tumor-infiltrating cDC1s promoted by Flt3L. Thus, DNGR-1 blockade may improve antitumor immunity in tumor therapy settings associated to high Flt3L expression.
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MESH Headings
- Animals
- Basic-Leucine Zipper Transcription Factors/genetics
- Basic-Leucine Zipper Transcription Factors/metabolism
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cell Line, Tumor
- Chemokine CCL5/genetics
- Chemokine CCL5/metabolism
- Coculture Techniques
- Colonic Neoplasms/genetics
- Colonic Neoplasms/immunology
- Colonic Neoplasms/metabolism
- Colonic Neoplasms/therapy
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Gene Expression Regulation, Neoplastic
- Genetic Therapy
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/metabolism
- Melanoma, Experimental/therapy
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Mice, Inbred C57BL
- Mice, Knockout
- Phenotype
- Receptors, CCR5/genetics
- Receptors, CCR5/metabolism
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Signal Transduction
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- Skin Neoplasms/metabolism
- Skin Neoplasms/therapy
- Tumor Burden
- Tumor Escape
- Tumor Microenvironment
- Mice
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Affiliation(s)
- Francisco J Cueto
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Carlos Del Fresno
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
- Hospital la Paz Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Paola Brandi
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Alexis J Combes
- Department of Pathology, University of California, San Francisco, California, USA
- ImmunoX Initiative, University of California, San Francisco, California, USA
- UCSF CoLabs, University of California, San Francisco, California, USA
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Alfonso R Sánchez-Paulete
- Division of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
| | - Michel Enamorado
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
- Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Christian P Bromley
- Cancer Inflammation and Immunity Group, CRUK Manchester Institute, The University of Manchester, Manchester, UK
| | - Manuel J Gomez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Ruth Conde-Garrosa
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Santos Mañes
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Darwin, Madrid, Spain
| | - Santiago Zelenay
- Cancer Inflammation and Immunity Group, CRUK Manchester Institute, The University of Manchester, Manchester, UK
| | - Ignacio Melero
- Division of Immunology and Immunotherapy, Center for Applied Medical Research, University of Navarra, Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
- University Clinic, University of Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Matthew F Krummel
- Department of Pathology, University of California, San Francisco, California, USA
| | - David Sancho
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
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24
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Wu J, Zhao R, Dai J, Lai G, Khan AU, Yu X, Wu S, Ouyang J, Sang H. Analysis of differential expression of long non‑coding RNAs in exosomes derived from mature and immature dendritic cells. Mol Med Rep 2021; 23:132. [PMID: 33313954 PMCID: PMC7751491 DOI: 10.3892/mmr.2020.11771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
Dendritic cells release bioactive exosomes involved in immune regulation. Long non‑coding RNAs (lncRNAs) are implicated in a number of immunoregulatory mechanisms. However, the roles of lncRNAs in dendritic cell‑derived exosomes remain to be elucidated. The present study aimed to investigate the roles of lncRNAs in exosomes derived from mature and immature dendritic cells and to find specific lncRNAs with immunoregulatory function. The expression profiles of lncRNAs in exosomes derived from bone marrow dendritic cells of C57 mice were illustrated. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses and Gene Set Enrichment Analysis were performed to identify potential targets correlated with immune regulation. In addition, lncRNA‑miRNA‑mRNA networks were predicted using bioinformatics methods. Representative lncRNAs were further validated via reverse transcription‑quantitative PCR. A total of 437 lncRNAs were analyzed using RNA‑seq. Among these, the expression of ~87 lncRNAs was upregulated and 21 lncRNAs was downregulated in mature dendritic cell‑derived exosomes (Dex) compared with immature Dex. GO analyses indicated the involvement of upregulated lncRNAs in multiple biological functions, such as the immune system process, while downregulated lncRNAs were involved in poly(A) RNA binding. Analysis of the KEGG pathway identified the relationship of TNF signaling and ribosome pathway with upregulated lncRNAs and downregulated lncRNAs, respectively. The results of gene set enrichment analysis identified that three lncRNA‑associated transcripts (Procr‑203, Clec4e‑202 and Traf1‑203) were highly associated with immunoregulatory functions including T helper cell differentiation and Janus kinase‑STAT signaling pathway. The results indicated the involvement of candidate lncRNAs in immunoregulation and suggested a new perspective on the modulation of lncRNAs in Dex.
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Affiliation(s)
- Jiachang Wu
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Renli Zhao
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jingxing Dai
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Guohua Lai
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Asmat Ullah Khan
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Xiao Yu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Sha Wu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jun Ouyang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Hongxun Sang
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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25
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Cohen-Kedar S, Keizer D, Schwartz S, Rabinowitz KM, Kaboub K, Shaham Barda E, Sadot E, Wolff-Bar M, Shaltiel T, Dotan I. Commensal fungi and their cell-wall β-glucans direct differential responses in human intestinal epithelial cells. Eur J Immunol 2021; 51:864-878. [PMID: 33616974 DOI: 10.1002/eji.202048852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/13/2020] [Accepted: 11/25/2020] [Indexed: 12/17/2022]
Abstract
Intestinal epithelial cells (IECs) are the first to encounter luminal antigens and play an active role in intestinal immune responses. We previously reported that β-glucans, major fungal cell-wall glycans, induced chemokine secretion by IEC lines in a Dectin-1- and Syk-dependent manner. Here, we show that in contrast to β-glucans, stimulation of IEC lines with Candida albicans and Saccharomyces cerevisiae did not induce secretion of any of the proinflammatory cytokines IL-8, CCL2, CXCL1, and GM-CSF. Commensal fungi and β-glucans activated Syk and ERK in IEC lines. However, only β-glucans activated p38, JNK, and the transcription factors NF-κB p65 and c-JUN, which were necessary for cytokine secretion. Furthermore, costimulation of IEC lines with β-glucans and C. albicans yielded decreased cytokine secretion compared to stimulation with β-glucans alone. Finally, ex vivo stimulation of human colonic mucosal explants with zymosan and C. albicans, leads to epithelial Syk and ERK phosphorylation, implying recognition of fungi and similar initial signaling pathways as in IEC lines. Lack of cytokine secretion in response to commensal fungi may reflect IECs' response to fungal glycans, other than β-glucans, that contribute to mucosal tolerance. Skewed epithelial response to commensal fungi may impair homeostasis and contribute to intestinal inflammation.
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Affiliation(s)
- Sarit Cohen-Kedar
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Danielle Keizer
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Suzana Schwartz
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Keren M Rabinowitz
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Kawsar Kaboub
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Efrat Shaham Barda
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Eran Sadot
- Department of Surgery, Beilinson Campus, Rabin Medical Center, Petah Tikva, Israel
| | - Meirav Wolff-Bar
- Department of Pathology, Beilinson Campus, Rabin Medical Center, Petah Tikva, Israel
| | - Tali Shaltiel
- Department of Surgery, Beilinson Campus, Rabin Medical Center, Petah Tikva, Israel
| | - Iris Dotan
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel.,Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
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26
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Zarrin AA, Monteiro RC. Editorial: The Role of Inhibitory Receptors in Inflammation and Cancer. Front Immunol 2020; 11:633686. [PMID: 33414792 PMCID: PMC7783443 DOI: 10.3389/fimmu.2020.633686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 01/31/2023] Open
Affiliation(s)
| | - Renato C Monteiro
- Center for Research on Inflammation, Université de Paris, Paris, France
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27
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Zhao J, Kim JW, Zhou Z, Qi J, Tian W, Lim CW, Han KM, Kim B. Macrophage-Inducible C-Type Lectin Signaling Exacerbates Acetaminophen-Induced Liver Injury by Promoting Kupffer Cell Activation in Mice. Mol Pharmacol 2020; 99:92-103. [PMID: 33262251 DOI: 10.1124/molpharm.120.000043] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023] Open
Abstract
Overdose of acetaminophen (APAP) has become one of the most frequent causes of acute liver failure. Macrophage-inducible C-type lectin (Mincle) acts as a key moderator in immune responses by recognizing spliceosome-associated protein 130 (SAP130), which is an endogenous ligand released by necrotic cells. This study aims to explore the function of Mincle in APAP-induced hepatotoxicity. Wild-type (WT) and Mincle knockout (KO) mice were used to induce acute liver injury by injection of APAP. The hepatic expressions of Mincle, SAP130, and Mincle signaling intermediate (Syk) were markedly upregulated after the APAP challenge. Mincle KO mice showed attenuated injury in the liver, as shown by reduced pathologic lesions, decreased alanine aminotransferase and aspartate aminotransferase levels, downregulated levels of inflammatory cytokines, and decreased neutrophil infiltration. Consistently, inhibition of Syk signaling by GS9973 alleviated APAP hepatotoxicity. Most importantly, Kupffer cells (KCs) were found as the major cellular source of Mincle. The depletion of KCs abolished the detrimental role of Mincle, and the adoptive transfer of WT KC to Mincle KO mice partially reversed the hyporesponsiveness to hepatotoxicity induced by APAP. Furthermore, the expression levels of interleukin (IL)-1β and neutrophil-attractant CXC chemokines were substantially lower in KCs isolated from APAP-treated Mincle KO mice compared with those from WT mice. Similar results were found in primary Mincle KO KCs treated with a ligand of Mincle (trehalose-6,6-dibehenate) or in conditioned media obtained from APAP-treated hepatocytes. Collectively, Mincle can regulate the inflammatory response of KCs, which is necessary for the complete progression of hepatotoxicity induced by APAP. SIGNIFICANCE STATEMENT: Acetaminophen (APAP) overdose is becoming a main cause of drug-induced acute liver damage in the developed world. This study showed that macrophage-inducible C-type lectin (Mincle) deletion or inhibition of Mincle downstream signaling attenuates APAP hepatotoxicity. Furthermore, Mincle as a modulator of Kupffer cell activation contributes to the full process of hepatotoxicity induced by APAP. This mechanism will offer valuable insights to overcome the limitation of APAP hepatotoxicity treatment.
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Affiliation(s)
- Jing Zhao
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Jong-Won Kim
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Zixiong Zhou
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Jing Qi
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Weishun Tian
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Chae Woong Lim
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Kang Min Han
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
| | - Bumseok Kim
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeonbuk, Republic of Korea (J.Z., J.-W.K., Z.Z., J.Q., W.T., C.W.L., B.K.); Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea (K.M.H.); and College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, People's Republic of China (J.Z.)
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28
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Khouili SC, Cook ECL, Hernández-García E, Martínez-López M, Conde-Garrosa R, Iborra S. SHP-1 Regulates Antigen Cross-Presentation and Is Exploited by Leishmania to Evade Immunity. Cell Rep 2020; 33:108468. [PMID: 33264612 DOI: 10.1016/j.celrep.2020.108468] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/15/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022] Open
Abstract
Intracellular pathogens have evolved strategies to evade detection by cytotoxic CD8+ T lymphocytes (CTLs). Here, we ask whether Leishmania parasites trigger the SHP-1-FcRγ chain inhibitory axis to dampen antigen cross-presentation in dendritic cells expressing the C-type lectin receptor Mincle. We find increased cross-priming of CTLs in Leishmania-infected mice deficient for Mincle or with a selective loss of SHP-1 in CD11c+ cells. The latter also shows improved cross-presentation of cell-associated viral antigens. CTL activation in vitro reveals increased MHC class I-peptide complex expression in Mincle- or SHP-1-deficient CD11c+ cells. Neuraminidase treatment also boosts cross-presentation, suggesting that Leishmania triggers SHP-1-associated sialic-acid-binding receptors. Mechanistically, enhanced antigen processing correlates with reduced endosomal acidification in the absence of SHP-1. Finally, we demonstrate that SHP-1 inhibition improves CD11c+ cell-based vaccination against the parasite. Thus, SHP-1-mediated impairment of cross-presentation can be exploited by pathogens to evade CTLs, and SHP-1 inhibition improves CTL responses during vaccination.
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Affiliation(s)
- Sofía C Khouili
- Immunobiology Lab, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Emma C L Cook
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Elena Hernández-García
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - María Martínez-López
- Champalimaud Research, Champalimaud Centre for the Unknown, Av. Brasília, 1400-038 Lisboa, Portugal
| | - Ruth Conde-Garrosa
- Immunobiology Lab, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Salvador Iborra
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain.
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29
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Abstract
After both sterile and infectious insults, damage is inflicted on tissues leading to accidental or programmed cell death. In addition, events of programmed cell death also take place under homeostatic conditions, such as in embryo development or in the turnover of hematopoietic cells. Mammalian tissues are seeded with myeloid immune cells, which harbor a plethora of receptors that allow the detection of cell death, modulating immune responses. The myeloid C-type lectin receptors (CLRs) are one of the most prominent families of receptors involved in tailoring immunity after sensing dead cells. In this chapter, we will cover a diversity of signals arising from different forms of cell death and how they are recognized by myeloid CLRs. We will also explore how myeloid cells develop their sentinel function, exploring how some of these CLRs identify cell death and the type of responses triggered thereof. In particular, we will focus on DNGR-1 (CLEC9A), Mincle (CLEC4E), CLL-1 (CLEC12A), LOX-1 (OLR1), CD301 (CLEC10A) and DEC-205 (LY75) as paradigmatic death-sensing CLRs expressed by myeloid cells. The molecular processes triggered after cell death recognition by myeloid CLRs contribute to the regulation of immune responses in pathologies associated with tissue damage, such as infection, autoimmunity and cancer. A better understanding of these processes may help to improve the current approaches for therapeutic intervention.
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30
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Valverde P, Martínez JD, Cañada FJ, Ardá A, Jiménez-Barbero J. Molecular Recognition in C-Type Lectins: The Cases of DC-SIGN, Langerin, MGL, and L-Sectin. Chembiochem 2020; 21:2999-3025. [PMID: 32426893 PMCID: PMC7276794 DOI: 10.1002/cbic.202000238] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/19/2020] [Indexed: 12/16/2022]
Abstract
Carbohydrates play a pivotal role in intercellular communication processes. In particular, glycan antigens are key for sustaining homeostasis, helping leukocytes to distinguish damaged tissues and invading pathogens from healthy tissues. From a structural perspective, this cross-talk is fairly complex, and multiple membrane proteins guide these recognition processes, including lectins and Toll-like receptors. Since the beginning of this century, lectins have become potential targets for therapeutics for controlling and/or avoiding the progression of pathologies derived from an incorrect immune outcome, including infectious processes, cancer, or autoimmune diseases. Therefore, a detailed knowledge of these receptors is mandatory for the development of specific treatments. In this review, we summarize the current knowledge about four key C-type lectins whose importance has been steadily growing in recent years, focusing in particular on how glycan recognition takes place at the molecular level, but also looking at recent progresses in the quest for therapeutics.
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Affiliation(s)
- Pablo Valverde
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - J Daniel Martínez
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - F Javier Cañada
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Avda Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Ana Ardá
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
- Ikerbasque, Basque Foundation for Science, 48009, Bilbao, Spain
- Department of Organic Chemistry II, Faculty of Science and Technology, UPV-EHU, 48940, Leioa, Spain
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31
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Myeloid cells in sensing of tissue damage. Curr Opin Immunol 2020; 68:34-40. [PMID: 33035713 PMCID: PMC7538386 DOI: 10.1016/j.coi.2020.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 11/23/2022]
Abstract
Myeloid cells are components of the innate immune system that represent the first line of defense. Tissue damage, associated with pathological conditions such as infection, cancer or autoimmunity, leads to the exposure of the intracellular content to the extracellular environment. Myeloid cells detect ligands exposed or released by dead cells through specific receptors that signal for a diversity of responses. Inflammatory responses triggered by myeloid cells after sensing tissue injury can contribute to resolution of the damage. The signaling response following dead-cell sensing by myeloid cells can contribute either to an inflammatory or a regulatory response. We review herein some representative examples of how myeloid cells react to the recognition of cell death during specific tissue damage contexts. A deep understanding of the cellular and molecular mechanisms underlying these processes would allow to improve therapeutical interventions in pathologies associated with tissue damage.
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32
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Huber A, Killy B, Grummel N, Bodendorfer B, Paul S, Wiesmann V, Naschberger E, Zimmer J, Wirtz S, Schleicher U, Vera J, Ekici AB, Dalpke A, Lang R. Mycobacterial Cord Factor Reprograms the Macrophage Response to IFN-γ towards Enhanced Inflammation yet Impaired Antigen Presentation and Expression of GBP1. THE JOURNAL OF IMMUNOLOGY 2020; 205:1580-1592. [PMID: 32796022 DOI: 10.4049/jimmunol.2000337] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 07/09/2020] [Indexed: 12/12/2022]
Abstract
Mycobacteria survive in macrophages despite triggering pattern recognition receptors and T cell-derived IFN-γ production. Mycobacterial cord factor trehalose-6,6-dimycolate (TDM) binds the C-type lectin receptor MINCLE and induces inflammatory gene expression. However, the impact of TDM on IFN-γ-induced macrophage activation is not known. In this study, we have investigated the cross-regulation of the mouse macrophage transcriptome by IFN-γ and by TDM or its synthetic analogue trehalose-6,6-dibehenate (TDB). As expected, IFN-γ induced genes involved in Ag presentation and antimicrobial defense. Transcriptional programs induced by TDM and TDB were highly similar but clearly distinct from the response to IFN-γ. The glycolipids enhanced expression of a subset of IFN-γ-induced genes associated with inflammation. In contrast, TDM/TDB exerted delayed inhibition of IFN-γ-induced genes, including pattern recognition receptors, MHC class II genes, and IFN-γ-induced GTPases, with antimicrobial function. TDM downregulated MHC class II cell surface expression and impaired T cell activation by peptide-pulsed macrophages. Inhibition of the IFN-γ-induced GTPase GBP1 occurred at the level of transcription by a partially MINCLE-dependent mechanism that may target IRF1 activity. Although activation of STAT1 was unaltered, deletion of Socs1 relieved inhibition of GBP1 expression by TDM. Nonnuclear Socs1 was sufficient for inhibition, suggesting a noncanonical, cytoplasmic mechanism. Taken together, unbiased analysis of transcriptional reprogramming revealed a significant degree of negative regulation of IFN-γ-induced Ag presentation and antimicrobial gene expression by the mycobacterial cord factor that may contribute to mycobacterial persistence.
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Affiliation(s)
- Alexandra Huber
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Barbara Killy
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Nadine Grummel
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Barbara Bodendorfer
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Sushmita Paul
- Laboratory of Systems Tumor Immunology, University Hospital Erlangen and Friedrich-Alexander University Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Veit Wiesmann
- Fraunhofer-Institut für Integrierte Schaltungen, D-91058 Erlangen, Germany
| | - Elisabeth Naschberger
- Molekulare und Experimentelle Chirurgie, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nuremberg, D-91054 Erlangen, Germany
| | - Jana Zimmer
- Department of Infectious Diseases, University Hospital Heidelberg, D-69120 Heidelberg, Germany
| | - Stefan Wirtz
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Ulrike Schleicher
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Julio Vera
- Laboratory of Systems Tumor Immunology, University Hospital Erlangen and Friedrich-Alexander University Erlangen-Nürnberg, D-91054 Erlangen, Germany
| | - Arif Bülent Ekici
- Institut für Humangenetik, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany; and
| | - Alexander Dalpke
- Department of Infectious Diseases, University Hospital Heidelberg, D-69120 Heidelberg, Germany.,Institut für Medizinische Mikrobiologie und Hygiene, Technische Universität Dresden, 01307 Dresden, Germany
| | - Roland Lang
- Institut für Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany;
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Mnich ME, van Dalen R, van Sorge NM. C-Type Lectin Receptors in Host Defense Against Bacterial Pathogens. Front Cell Infect Microbiol 2020; 10:309. [PMID: 32733813 PMCID: PMC7358460 DOI: 10.3389/fcimb.2020.00309] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022] Open
Abstract
Antigen-presenting cells (APCs) are present throughout the human body—in tissues, at barrier sites and in the circulation. They are critical for processing external signals to instruct both local and systemic responses toward immune tolerance or immune defense. APCs express an extensive repertoire of pattern-recognition receptors (PRRs) to detect and transduce these signals. C-type lectin receptors (CLRs) comprise a subfamily of PRRs dedicated to sensing glycans, including those expressed by commensal and pathogenic bacteria. This review summarizes recent findings on the recognition of and responses to bacteria by membrane-expressed CLRs on different APC subsets, which are discussed according to the primary site of infection. Many CLR-bacterial interactions promote bacterial clearance, whereas other interactions are exploited by bacteria to enhance their pathogenic potential. The discrimination between protective and virulence-enhancing interactions is essential to understand which interactions to target with new prophylactic or treatment strategies. CLRs are also densely concentrated at APC dendrites that sample the environment across intact barrier sites. This suggests an–as yet–underappreciated role for CLR-mediated recognition of microbiota-produced glycans in maintaining tolerance at barrier sites. In addition to providing a concise overview of identified CLR-bacteria interactions, we discuss the main challenges and potential solutions for the identification of new CLR-bacterial interactions, including those with commensal bacteria, and for in-depth structure-function studies on CLR-bacterial glycan interactions. Finally, we highlight the necessity for more relevant tissue-specific in vitro, in vivo and ex vivo models to develop therapeutic applications in this area.
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Affiliation(s)
- Malgorzata E Mnich
- Medical Microbiology, UMC Utrecht, Utrecht University, Utrecht, Netherlands.,GSK, Siena, Italy
| | - Rob van Dalen
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Nina M van Sorge
- Department of Medical Microbiology and Infection Prevention, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Netherlands Reference Laboratory for Bacterial Meningitis, Amsterdam University Medical Center, Amsterdam, Netherlands
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Lindenwald DL, Monteiro JT, Rautenschlein S, Meens J, Jung K, Becker SC, Lepenies B. Ovine C-type lectin receptor hFc-fusion protein library - A novel platform to screen for host-pathogen interactions. Vet Immunol Immunopathol 2020; 224:110047. [PMID: 32325253 DOI: 10.1016/j.vetimm.2020.110047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/13/2020] [Accepted: 03/26/2020] [Indexed: 12/23/2022]
Abstract
C-type lectin receptors (CTLRs) are pattern recognition receptors which are important constituents of the innate immunity. However, their role has mostly been studied in humans and in mouse models. To bridge the knowledge gap concerning CTLRs of veterinary relevant species, a novel ovine CTLR hFc-fusion protein library which allows in vitro ligand identification and pathogen binding studies has been established. Its utility was tested with known ligands of corresponding murine CTLRs in ELISA- and flow cytometry based binding studies. The ovine CTLR-hFc library was subsequently used in a proof-of-principle pathogen binding study with the ruminant pathogen Mycoplasma mycoides subsp. capri. Some ovine CTLRs, such as Dendritic Cell Immunoreceptor (DCIR, Clec4a), Macrophage C-Type Lectin (MCL, Clec4d) and Myeloid Inhibitory C-Type Lectin-Like Receptor (MICL, Clec12a) were identified as possible candidate receptors whose role in Mycoplasma recognition can now be unraveled in further studies. This study thus shows the utility of this novel ovine CTLR-hFc fusion protein library to screen for CTLR/pathogen interactions.
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Affiliation(s)
- Dimitri L Lindenwald
- Immunology Unit & Research Center for Emerging Infections and Zoonoses (RIZ), University for Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - João T Monteiro
- Immunology Unit & Research Center for Emerging Infections and Zoonoses (RIZ), University for Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - Silke Rautenschlein
- Clinic for Poultry, University for Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - Jochen Meens
- Institute for Microbiology, University for Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - Klaus Jung
- Institute for Animal Breeding and Genetics & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - Stefanie C Becker
- Institute for Parasitology & Research Center for Emerging Infections and Zoonoses (RIZ), University for Veterinary Medicine Hannover, Foundation. Hannover, Germany
| | - Bernd Lepenies
- Immunology Unit & Research Center for Emerging Infections and Zoonoses (RIZ), University for Veterinary Medicine Hannover, Foundation. Hannover, Germany.
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Drouin M, Saenz J, Chiffoleau E. C-Type Lectin-Like Receptors: Head or Tail in Cell Death Immunity. Front Immunol 2020; 11:251. [PMID: 32133013 PMCID: PMC7040094 DOI: 10.3389/fimmu.2020.00251] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/30/2020] [Indexed: 12/12/2022] Open
Abstract
C-type lectin-like receptors (CLRs) represent a family of transmembrane pattern recognition receptors, expressed primarily by myeloid cells. They recognize not only pathogen moieties for host defense, but also modified self-antigens such as damage-associated molecular patterns released from dead cells. Upon ligation, CLR signaling leads to the production of inflammatory mediators to shape amplitude, duration and outcome of the immune response. Thus, following excessive injury, dysregulation of these receptors leads to the development of inflammatory diseases. Herein, we will focus on four CLRs of the "Dectin family," shown to decode the immunogenicity of cell death. CLEC9A on dendritic cells links F-actin exposed by dying cells to favor cross-presentation of dead-cell associated antigens to CD8+ T cells. Nevertheless, CLEC9A exerts also feedback mechanisms to temper neutrophil recruitment and prevent additional tissue damage. MINCLE expressed by macrophages binds nuclear SAP130 released by necrotic cells to potentiate pro-inflammatory responses. However, the consequent inflammation can exacerbate pathogenesis of inflammatory diseases. Moreover, in a tumor microenvironment, MINCLE induces macrophage-induced immune suppression and cancer progression. Similarly, triggering of LOX-1 by oxidized LDL, amplifies pro-inflammatory response but promotes tumor immune escape and metastasis. Finally, CLEC12A that recognizes monosodium urate crystals formed during cell death, inhibits activating signals to prevent detrimental inflammation. Interestingly, CLEC12A also sustains type-I IFN response to finely tune immune responses in case of viral-induced collateral damage. Therefore, CLRs acting in concert as sensors of injury, could be used in a targeted way to treat numerous diseases such as allergies, obesity, tumors, and autoimmunity.
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Affiliation(s)
- Marion Drouin
- Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France.,OSE Immunotherapeutics, Nantes, France
| | - Javier Saenz
- Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Elise Chiffoleau
- Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
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36
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Cueto FJ, Del Fresno C, Sancho D. DNGR-1, a Dendritic Cell-Specific Sensor of Tissue Damage That Dually Modulates Immunity and Inflammation. Front Immunol 2020; 10:3146. [PMID: 32117205 PMCID: PMC7018937 DOI: 10.3389/fimmu.2019.03146] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/27/2019] [Indexed: 11/13/2022] Open
Abstract
DNGR-1 (encoded by CLEC9A) is a C-type lectin receptor (CLR) with an expression profile that is mainly restricted to type 1 conventional dendritic cells (cDC1s) both in mice and humans. This delimited expression pattern makes it appropriate for defining a cDC1 signature and for therapeutic targeting of this population, promoting immunity in mouse models. Functionally, DNGR-1 binds F-actin, which is confined within the intracellular space in healthy cells, but is exposed when plasma membrane integrity is compromised, as happens in necrosis. Upon F-actin binding, DNGR-1 signals through SYK and mediates cross-presentation of dead cell-associated antigens. Cross-presentation to CD8+ T cells promoted by DNGR-1 during viral infections is key for cross-priming tissue-resident memory precursors in the lymph node. However, in contrast to other closely related CLRs such as Dectin-1, DNGR-1 does not activate NFκB. Instead, recent findings show that DNGR-1 can activate SHP-1 to limit inflammation triggered by heterologous receptors, which results in reduced production of inflammatory chemokines and neutrophil recruitment into damaged tissues in both sterile and infectious processes. Hence, DNGR-1 reduces immunopathology associated with tissue damage, promoting disease tolerance to safeguard tissue integrity. How DNGR-1 signals are conditioned by the microenvironment and the detailed molecular mechanisms underlying DNGR-1 function have not been elucidated. Here, we review the expression pattern and structural features of DNGR-1, and the biological relevance of the detection of tissue damage through this CLR.
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Affiliation(s)
- Francisco J Cueto
- Laboratory of Immunobiology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Carlos Del Fresno
- Laboratory of Immunobiology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - David Sancho
- Laboratory of Immunobiology, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
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Genetic variation in Interleukin-32 influence the immune response against New World Leishmania species and susceptibility to American Tegumentary Leishmaniasis. PLoS Negl Trop Dis 2020; 14:e0008029. [PMID: 32023240 PMCID: PMC7028298 DOI: 10.1371/journal.pntd.0008029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 02/18/2020] [Accepted: 01/03/2020] [Indexed: 02/07/2023] Open
Abstract
Interleukin-32 is a novel inflammatory mediator that has been described to be important in the immunopathogenesis and control of infections caused by Leishmania parasites. By performing experiments with primary human cells in vitro, we demonstrate that the expression of IL-32 isoforms is dependent on the time exposed to L. amazonensis and L. braziliensis antigens. Moreover, for the first time we show the functional consequences of three different genetic variations in the IL32 (rs4786370, rs4349147, rs1555001) modulating IL-32γ expression, influencing innate and adaptive cytokine production after Leishmania exposure. Using a Brazilian cohort of 107 American Tegumentary Leishmaniasis patients and a control cohort of 245 healthy individuals, the IL32 rs4786370 genetic variant was associated with protection against ATL, whereas the IL32 rs4349147 was associated with susceptibility to the development of localized cutaneous and mucosal leishmaniasis. These novel insights may help improve therapeutic strategies and lead to benefits for patients suffering from Leishmania infections. In this study, we described how IL-32 isoforms are crucial to host defense against new world Leishmania species infections. Furthermore, by accessing the genotype frequency of genetic variations in IL32 in a cohort of Brazilian patients with American Tegumentary Leishmaniasis (ATL) and controls, we have obtained indications that IL-32 is associated with disease susceptibility and the development of different clinical manifestations. Thus, this study provides us an extra evidence that the isoforms of IL-32 shape the immune response favoring the development of different cytokines produced by peripheral blood mononuclear cells that might contribute to skin/mucosal inflammation and host defense.
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Miyake Y, Yamasaki S. Immune Recognition of Pathogen-Derived Glycolipids Through Mincle. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1204:31-56. [DOI: 10.1007/978-981-15-1580-4_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kanemaru K, Noguchi E, Tahara-Hanaoka S, Mizuno S, Tateno H, Denda-Nagai K, Irimura T, Matsuda H, Sugiyama F, Takahashi S, Shibuya K, Shibuya A. Clec10a regulates mite-induced dermatitis. Sci Immunol 2019; 4:4/42/eaax6908. [DOI: 10.1126/sciimmunol.aax6908] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 10/24/2019] [Indexed: 01/19/2023]
Abstract
House dust mite (HDM) is a major allergen that causes allergic diseases such as atopic dermatitis. However, the regulatory mechanisms of HDM-induced immune responses are incompletely understood. NC/Nga mice are an inbred strain that is more susceptible to HDM and develops more severe dermatitis than other strains. Using whole-exome sequencing, we found that NC/Nga mice carry a stop-gain mutation inClec10a, which encodes a C-type lectin receptor, Clec10a (MGL1/CD301a). The repair of this gene mutation using the CRISPR-Cas9 system ameliorated HDM-induced dermatitis, indicating that the Clec10a mutation is responsible for hypersensitivity to HDM in NC/Nga mice. Similarly,Clec10a−/−mice on the C57BL/6J background showed exacerbated HDM-induced dermatitis. Clec10a expressed on skin macrophages inhibits HDM-induced Toll-like receptor 4 (TLR4)–mediated inflammatory cytokine production through the inhibitory immunoreceptor tyrosine activating motif in its cytoplasmic portion. We identified asialoglycoprotein receptor 1 (Asgr1) as a functional homolog of mouse Clec10a in humans. Moreover, we found that a mucin-like molecule in HDM is a ligand for mouse Clec10a and human Asgr1. Skin application of the ligand ameliorated a TLR4 ligand-induced dermatitis in mice. Our findings suggest that Clec10a in mice and Asgr1 in humans play an important role in skin homeostasis against inflammation associated with HDM-induced dermatitis.
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Martínez-Rodrigo A, S. Dias D, Ribeiro PAF, Roatt BM, Mas A, Carrión J, Coelho EAF, Domínguez-Bernal G. Immunization with the HisAK70 DNA Vaccine Induces Resistance against Leishmania Amazonensis Infection in BALB/c Mice. Vaccines (Basel) 2019; 7:vaccines7040183. [PMID: 31739549 PMCID: PMC6963319 DOI: 10.3390/vaccines7040183] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 12/04/2022] Open
Abstract
Leishmania amazonensis is the aetiological agent of a broad spectrum of leishmaniosis in South America. It can cause not only numerous cases of cutaneous leishmaniosis but also diffuse cutaneous leishmaniosis. Considering the diversity of parasite species causing different forms of the disease that coexist in the same region, it is desirable to develop a vaccine capable of eliciting cross-protection. We have previously described the use of HisAK70 DNA vaccine for immunization of mice to assess the induction of a resistant phenotype against Leishmania major and infantum infections. In this study, we extended its application in the murine model of infection by using L. amazonensis promastigotes. Our data revealed that 14 weeks post-infection, HisAK70-vaccinated mice showed key biomarkers of protection, such as higher iNOS/arginase activity, IFN-γ/IL-10, IFN-γ/IL-4, and GM-CSF/IL-10 ratios, in addition to an IgG2a-type response when compared to the control group. These findings correlated with the presentation of lower footpad swelling and parasite burdens in the immunized compared to the control mice. Overall, this study suggests that immunization with HisAK70 may be considered a suitable tool to combat leishmaniosis as it is able to induce a potent cellular immune response, which allows to control the infection caused by L. amazonensis.
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Affiliation(s)
- Abel Martínez-Rodrigo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense Madrid, INMIVET, 28040 Madrid, Spain; (A.M.-R.); (A.M.); (J.C.)
| | - Daniel S. Dias
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil; (D.S.D.); (P.A.F.R.); (E.A.F.C.)
| | - Patrícia A. F. Ribeiro
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil; (D.S.D.); (P.A.F.R.); (E.A.F.C.)
| | - Bruno M. Roatt
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto 35400-000, Minas Gerais, Brazil;
| | - Alicia Mas
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense Madrid, INMIVET, 28040 Madrid, Spain; (A.M.-R.); (A.M.); (J.C.)
| | - Javier Carrión
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense Madrid, INMIVET, 28040 Madrid, Spain; (A.M.-R.); (A.M.); (J.C.)
| | - Eduardo A. F. Coelho
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil; (D.S.D.); (P.A.F.R.); (E.A.F.C.)
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Gustavo Domínguez-Bernal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense Madrid, INMIVET, 28040 Madrid, Spain; (A.M.-R.); (A.M.); (J.C.)
- Correspondence: ; Tel.: +34-913943712
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41
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Kottom TJ, Hebrink DM, Monteiro JT, Lepenies B, Carmona EM, Wuethrich M, Santo Dias LD, Limper AH. Myeloid C-type lectin receptors that recognize fungal mannans interact with Pneumocystis organisms and major surface glycoprotein. J Med Microbiol 2019; 68:1649-1654. [PMID: 31609198 DOI: 10.1099/jmm.0.001062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Myeloid C-type lectin receptors (CLRs) are innate immune recognition molecules that bind to microorganisms via their carbohydrate recognition domains. In this study, we utilized a library of CLRs that recognize fungal mannans. We used this library to screen against Pneumocystis carinii (Pc) homogenates or purified Pc major surface glycoprotein (Msg) present on Pneumocystis. The results demonstrated that all of the mammalian CLR hFc-fusions tested displayed significant interaction/binding with Pc organisms, and furthermore to isolated Msg. Highest Pc organism and Msg binding activities were with CLR members Mincle, Dectin-2, DC-SIGN and MCL. An immunofluorescence assay with the respective CLR hFc-fusions against whole Pc life forms corroborated these findings. Although some of these CLRs have been implicated previously as important for Pneumocystis pathogenesis (Dectin-1/Dectin-2/Mincle), this is the first analysis of head-to-head comparison of known fungal mannan binding CLR-hFc fusions with Pc. Lastly, heat treatment resulted in reducted CLR binding.
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Affiliation(s)
- Theodore J Kottom
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
| | - Deanne M Hebrink
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
| | - Joao T Monteiro
- Immunology Unit and Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine, Germany, Hannover
| | - Bernd Lepenies
- Immunology Unit and Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine, Germany, Hannover
| | - Eva M Carmona
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
| | - Marcel Wuethrich
- Departments of Pediatrics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Lucas Dos Santo Dias
- Departments of Pediatrics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Andrew H Limper
- Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
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Abstract
The C-type lectins are a superfamily of proteins that recognize a broad repertoire of ligands and that regulate a diverse range of physiological functions. Most research attention has focused on the ability of C-type lectins to function in innate and adaptive antimicrobial immune responses, but these proteins are increasingly being recognized to have a major role in autoimmune diseases and to contribute to many other aspects of multicellular existence. Defects in these molecules lead to developmental and physiological abnormalities, as well as altered susceptibility to infectious and non-infectious diseases. In this Review, we present an overview of the roles of C-type lectins in immunity and homeostasis, with an emphasis on the most exciting recent discoveries.
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Lu X, Nagata M, Yamasaki S. Mincle: 20 years of a versatile sensor of insults. Int Immunol 2019; 30:233-239. [PMID: 29726997 DOI: 10.1093/intimm/dxy028] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 04/28/2018] [Indexed: 12/11/2022] Open
Abstract
Macrophage-inducible C-type lectin, better known as Mincle, is a member of the C-type lectin receptor family and is encoded by Clec4e. Mincle was an orphan receptor for a long time after having been discovered as a lipopolysaccharide-induced protein, yet later an adjuvant glycolipid in mycobacteria-trehalose dimycolate-was identified as a ligand. Ligands for Mincle were also found existing in bacteria, fungi and even mammals. When confronted with foreign elements, Mincle can recognize characteristic pathogen-associated molecular patterns, mostly glycolipids, from Mycobacterium tuberculosis and other pathogens, and thus induce immune responses against infection. To maintain self-homeostasis, Mincle can recognize lipid-based damage-associated molecular patterns, thereby monitoring the internal environment. The mechanism by which Mincle functions in the immune system is also becoming more clear along with the identification of its ligands. Being expressed widely on antigen-presenting cells, Mincle activation leads to the production of cytokines and chemokines, neutrophil infiltration and other inflammatory responses. Besides, Mincle can induce acquired immunity such as antigen-specific T-cell responses and antibody production as an adjuvant receptor. In this review, we will retrospectively sketch the discovery and study of Mincle, and outline some current work on this receptor.
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Affiliation(s)
- Xiuyuan Lu
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Yamadaoka, Suita, Osaka, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Yamadaoka, Suita, Osaka, Japan.,Division of Molecular Immunology, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Masahiro Nagata
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Yamadaoka, Suita, Osaka, Japan
| | - Sho Yamasaki
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Yamadaoka, Suita, Osaka, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Yamadaoka, Suita, Osaka, Japan.,Division of Molecular Immunology, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan.,Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Inohana, Chuo-ku, Chiba, Japan
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Strength and medium-term impact of HisAK70 immunization in dogs: Vaccine safety and biomarkers of effectiveness for ex vivo Leishmania infantum infection. Comp Immunol Microbiol Infect Dis 2019; 65:137-143. [PMID: 31300103 DOI: 10.1016/j.cimid.2019.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/06/2019] [Indexed: 12/22/2022]
Abstract
HisAK70 candidates have successfully been tested in cutaneous (CL) and visceral leishmaniosis (VL) mouse models. Here, we analyse different biomarkers in dog trials after a heterologous immunization strategy with a HisAK70 candidate (plasmid DNA plus adoptive transfer of peripheral blood-derived dendritic cells (DCs) pulsed with the same pathoantigen and CpG ODN as an adjuvant) to explore the antileishmanial activity in an ex vivo canine co-culture system in the presence of Leishmania infantum parasites. In the canine model, the heterologous HisAK70 vaccine could decrease the infection index in the DC-T cell co-culture system by up to 54% after 30 days and reach almost 67% after 100 days post-immunization, respectively, compared to those obtained in the control group of dogs. The observed security and potential to fight ex vivo L. infantum infection highlight a HisAK70 heterologous immunization strategy as a promising alternative to evaluate its effectiveness against canine VL.
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45
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Napoletano C, Mattiucci S, Colantoni A, Battisti F, Zizzari IG, Rahimi H, Nuti M, Rughetti A. Anisakis pegreffii impacts differentiation and function of human dendritic cells. Parasite Immunol 2019; 40:e12527. [PMID: 29569735 DOI: 10.1111/pim.12527] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 03/13/2018] [Indexed: 02/07/2023]
Abstract
Human dendritic cells (DCs) show remarkable phenotypic changes when matured in the presence of helminth-derived products. These modifications frequently elicited a polarization towards Th2 cells and regulatory T cells thus contributing to immunological tolerance against these pathogens. In this study, the interaction between DCs and larvae of the zoonotic anisakid nematode Anisakis pegreffii was investigated. A. pegreffii larvae were collected from fish hosts, and monocyte-derived DCs were cocultured in the presence of the live larvae (L) or its crude extracts (CE). In both experimental conditions, A. pegreffii impacted DC viability, hampered DC maturation by reducing the expression of molecules involved in antigen presentation and migration (ie HLA-DR, CD86, CD83 and CCR7), increased the phagosomal radical oxygen species (ROS) levels and modulated the phosphorylation of ERK1,2 pathway. These biological changes were accompanied by the impairment of DCs to activate a T-cell-mediated IFNγ. Interestingly, live larvae appeared to differently modulate DC secretion of cytokines and chemokines as compared to CE. These results demonstrate, for the first time, the immunomodulatory role of A. pegreffii on DCs biology and functions. In addition, they suggest a dynamic contribution of DCs to the induction and maintenance of the inflammatory response against A. pegreffii.
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Affiliation(s)
- C Napoletano
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
| | - S Mattiucci
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, University Hospital "Policlinico Umberto I", "Sapienza" University of Rome, Rome, Italy
| | - A Colantoni
- Department of Public Health and Infectious Diseases, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, University Hospital "Policlinico Umberto I", "Sapienza" University of Rome, Rome, Italy
| | - F Battisti
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
| | - I G Zizzari
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
| | - H Rahimi
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
| | - M Nuti
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
| | - A Rughetti
- Department of Experimental Medicine, "Sapienza" University of Rome, Rome, Italy
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46
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Ben Mkaddem S, Benhamou M, Monteiro RC. Understanding Fc Receptor Involvement in Inflammatory Diseases: From Mechanisms to New Therapeutic Tools. Front Immunol 2019; 10:811. [PMID: 31057544 PMCID: PMC6481281 DOI: 10.3389/fimmu.2019.00811] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 03/27/2019] [Indexed: 12/21/2022] Open
Abstract
Fc receptors (FcRs) belong to the ITAM-associated receptor family. FcRs control the humoral and innate immunity which are essential for appropriate responses to infections and prevention of chronic inflammation or auto-immune diseases. Following their crosslinking by immune complexes, FcRs play various roles such as modulation of the immune response by released cytokines or of phagocytosis. Here, we review FcR involvement in pathologies leading notably to altered intracellular signaling with functionally relevant consequences to the host, and targeting of Fc receptors as therapeutic approaches. Special emphasis will be given to some FcRs, such as the FcαRI, the FcγRIIA and the FcγRIIIA, which behave like the ancient god Janus depending on the ITAM motif to inhibit or activate immune responses depending on their targeting by monomeric/dimeric immunoglobulins or by immune complexes. This ITAM duality has been recently defined as inhibitory or activating ITAM (ITAMi or ITAMa) which are controlled by Src family kinases. Involvement of various ITAM-bearing FcRs observed during infectious or autoimmune diseases is associated with allelic variants, changes in ligand binding ability responsible for host defense perturbation. During auto-immune diseases such as rheumatoid arthritis, lupus or immune thrombocytopenia, the autoantibodies and immune complexes lead to inflammation through FcR aggregation. We will discuss the role of FcRs in autoimmune diseases, and focus on novel approaches to target FcRs for resolution of antibody-mediated autoimmunity. We will finally also discuss the down-regulation of FcR functionality as a therapeutic approach for autoimmune diseases.
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Affiliation(s)
- Sanae Ben Mkaddem
- INSERM U1149, Centre de Recherche sur l'Inflammation, Paris, France.,CNRS ERL8252, Paris, France.,Faculté de Médecine, Université Paris Diderot, Sorbonne Paris Cité, Site Xavier Bichat, Paris, France.,Inflamex Laboratory of Excellence, Paris, France
| | - Marc Benhamou
- INSERM U1149, Centre de Recherche sur l'Inflammation, Paris, France.,CNRS ERL8252, Paris, France.,Faculté de Médecine, Université Paris Diderot, Sorbonne Paris Cité, Site Xavier Bichat, Paris, France.,Inflamex Laboratory of Excellence, Paris, France
| | - Renato C Monteiro
- INSERM U1149, Centre de Recherche sur l'Inflammation, Paris, France.,CNRS ERL8252, Paris, France.,Faculté de Médecine, Université Paris Diderot, Sorbonne Paris Cité, Site Xavier Bichat, Paris, France.,Inflamex Laboratory of Excellence, Paris, France.,Service d'Immunologie, DHU Fire, Hôpital Bichat-Claude Bernard, Assistance Publique de Paris, Paris, France
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47
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Rossi M, Fasel N. How to master the host immune system? Leishmania parasites have the solutions! Int Immunol 2019; 30:103-111. [PMID: 29294040 PMCID: PMC5892169 DOI: 10.1093/intimm/dxx075] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/21/2017] [Indexed: 12/11/2022] Open
Abstract
Infection by protozoan parasites of the genus Leishmania results in the development of leishmaniasis, an increasingly prevalent group of diseases affecting over 12 million people worldwide. Leishmaniasis can have very different outcomes ranging from cutaneous lesions, mucosal lesions to visceralization depending on the species of the infecting parasite and on the immune response developed by the host. As an obligate intracellular parasite, residing within macrophages, Leishmania evolved in strict contact with the host immune system, developing different mechanisms to evade or modulate the immune response. Various types of immune responses are observed during different Leishmania spp. infections, resulting in parasite clearance but also contributing to the pathogenesis, thus increasing the complexity of the course of the disease. Interestingly, depending on the type of leishmaniasis developed, opposite treatment strategies, which either boost or inhibit the inflammatory response, have shown efficacy. In this review, we summarize the contribution of different immune cell types to the development of the anti-leishmanial immune response and the parasite strategies to evade and modulate host immunity. Further, we discuss the involvement of co-infecting pathogens in the determination of the outcome of leishmaniasis and on the effectiveness of treatment and the implication of the immune response for treatment and vaccine development.
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Affiliation(s)
- Matteo Rossi
- Department of Biochemistry, University of Lausanne, Epalinges, Lausanne, Switzerland
| | - Nicolas Fasel
- Department of Biochemistry, University of Lausanne, Epalinges, Lausanne, Switzerland
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48
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Tibúrcio R, Nunes S, Nunes I, Rosa Ampuero M, Silva IB, Lima R, Machado Tavares N, Brodskyn C. Molecular Aspects of Dendritic Cell Activation in Leishmaniasis: An Immunobiological View. Front Immunol 2019; 10:227. [PMID: 30873156 PMCID: PMC6401646 DOI: 10.3389/fimmu.2019.00227] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 01/28/2019] [Indexed: 12/11/2022] Open
Abstract
Dendritic cells (DC) are a diverse group of leukocytes responsible for bridging innate and adaptive immunity. Despite their functional versatility, DCs exist primarily in two basic functional states: immature and mature. A large body of evidence suggests that upon interactions with pathogens, DCs undergo intricate cellular processes that culminate in their activation, which is paramount to the orchestration of effective immune responses against Leishmania parasites. Herein we offer a concise review of the emerging hallmarks of DCs activation in leishmaniasis as well as a comprehensive discussion of the following underlying molecular events: DC-Leishmania interaction, antigen uptake, costimulatory molecule expression, parasite ability to affect DC migration, antigen presentation, metabolic reprogramming, and epigenetic alterations.
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Affiliation(s)
- Rafael Tibúrcio
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Sara Nunes
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Ivanéia Nunes
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Mariana Rosa Ampuero
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Icaro Bonyek Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Reinan Lima
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil
| | - Natalia Machado Tavares
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil.,Instituto Nacional de Ciência e Tecnologia (INCT) iii Instituto de Investigação em Imunologia, São Paulo, Brazil
| | - Cláudia Brodskyn
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Federal University of Bahia, Salvador, Brazil.,Instituto Nacional de Ciência e Tecnologia (INCT) iii Instituto de Investigação em Imunologia, São Paulo, Brazil
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49
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Martínez-López M, Iborra S, Conde-Garrosa R, Mastrangelo A, Danne C, Mann ER, Reid DM, Gaboriau-Routhiau V, Chaparro M, Lorenzo MP, Minnerup L, Saz-Leal P, Slack E, Kemp B, Gisbert JP, Dzionek A, Robinson MJ, Rupérez FJ, Cerf-Bensussan N, Brown GD, Bernardo D, LeibundGut-Landmann S, Sancho D. Microbiota Sensing by Mincle-Syk Axis in Dendritic Cells Regulates Interleukin-17 and -22 Production and Promotes Intestinal Barrier Integrity. Immunity 2019; 50:446-461.e9. [PMID: 30709742 PMCID: PMC6382412 DOI: 10.1016/j.immuni.2018.12.020] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 07/30/2018] [Accepted: 12/17/2018] [Indexed: 12/15/2022]
Abstract
Production of interleukin-17 (IL-17) and IL-22 by T helper 17 (Th17) cells and group 3 innate lymphoid cells (ILC3s) in response to the gut microbiota ensures maintenance of intestinal barrier function. Here, we examined the mechanisms whereby the immune system detects microbiota in the steady state. A Syk-kinase-coupled signaling pathway in dendritic cells (DCs) was critical for commensal-dependent production of IL-17 and IL-22 by CD4+ T cells. The Syk-coupled C-type lectin receptor Mincle detected mucosal-resident commensals in the Peyer's patches (PPs), triggered IL-6 and IL-23p19 expression, and thereby regulated function of intestinal Th17- and IL-17-secreting ILCs. Mice deficient in Mincle or with selective depletion of Syk in CD11c+ cells had impaired production of intestinal RegIIIγ and IgA and increased systemic translocation of gut microbiota. Consequently, Mincle deficiency led to liver inflammation and deregulated lipid metabolism. Thus, sensing of commensals by Mincle and Syk signaling in CD11c+ cells reinforces intestinal immune barrier and promotes host-microbiota mutualism, preventing systemic inflammation.
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Affiliation(s)
- María Martínez-López
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain
| | - Salvador Iborra
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain; Department of Immunology, School of Medicine, Universidad Complutense de Madrid, 12 de Octubre Health Research Institute (imas12), Madrid, Spain.
| | - Ruth Conde-Garrosa
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain
| | - Annalaura Mastrangelo
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain
| | - Camille Danne
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Elizabeth R Mann
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK; Manchester Collaborative Centre for Inflammation Research, Faculty of Biology, Medicine, and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Delyth M Reid
- Medical Research Council Centre for Medical Mycology at the University of Aberdeen, Aberdeen Fungal Group, Institute of Medical Sciences, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Valérie Gaboriau-Routhiau
- INRA Micalis Institut, UMR1319, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France; INSERM UMR1163, Institut Imagine, Laboratory of Intestinal Immunity, 75015 Paris, France; Université Paris Descartes-Sorbonne Paris Cité, 75006 Paris, France
| | - Maria Chaparro
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Diego de León 62, Madrid 28006, Spain
| | - María P Lorenzo
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad San Pablo-CEU, Urbanización Montepríncipe, km 0, M501, Alcorcón 28925, Spain
| | | | - Paula Saz-Leal
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain
| | - Emma Slack
- Institute of Food, Nutrition, and Health, ETH Zurich, Vladimir-Prelog-Weg 4, Zürich 8093, Switzerland
| | | | - Javier P Gisbert
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Diego de León 62, Madrid 28006, Spain
| | | | | | - Francisco J Rupérez
- Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad San Pablo-CEU, Urbanización Montepríncipe, km 0, M501, Alcorcón 28925, Spain
| | - Nadine Cerf-Bensussan
- INSERM UMR1163, Institut Imagine, Laboratory of Intestinal Immunity, 75015 Paris, France; Université Paris Descartes-Sorbonne Paris Cité, 75006 Paris, France
| | - Gordon D Brown
- Medical Research Council Centre for Medical Mycology at the University of Aberdeen, Aberdeen Fungal Group, Institute of Medical Sciences, Foresterhill, Aberdeen AB25 2ZD, UK
| | - David Bernardo
- Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Diego de León 62, Madrid 28006, Spain
| | - Salomé LeibundGut-Landmann
- Section of Immunology, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 266a Zurich 8057, Switzerland
| | - David Sancho
- Immunobiology Laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Melchor Fernández Almagro 3, Madrid 28029, Spain.
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50
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Del Fresno C, Saz-Leal P, Enamorado M, Wculek SK, Martínez-Cano S, Blanco-Menéndez N, Schulz O, Gallizioli M, Miró-Mur F, Cano E, Planas A, Sancho D. DNGR-1 in dendritic cells limits tissue damage by dampening neutrophil recruitment. Science 2018; 362:351-356. [PMID: 30337411 DOI: 10.1126/science.aan8423] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/13/2018] [Accepted: 09/03/2018] [Indexed: 12/14/2022]
Abstract
Host injury triggers feedback mechanisms that limit tissue damage. Conventional type 1 dendritic cells (cDC1s) express dendritic cell natural killer lectin group receptor-1 (DNGR-1), encoded by the gene Clec9a, which senses tissue damage and favors cross-presentation of dead-cell material to CD8+ T cells. Here we find that DNGR-1 additionally reduces host-damaging inflammatory responses induced by sterile and infectious tissue injury in mice. DNGR-1 deficiency leads to exacerbated caerulein-induced necrotizing pancreatitis and increased pathology during systemic Candida albicans infection without affecting fungal burden. This effect is B and T cell-independent and attributable to increased neutrophilia in DNGR-1-deficient settings. Mechanistically, DNGR-1 engagement activates SHP-1 and inhibits MIP-2 (encoded by Cxcl2) production by cDC1s during Candida infection. This consequently restrains neutrophil recruitment and promotes disease tolerance. Thus, DNGR-1-mediated sensing of injury by cDC1s serves as a rheostat for the control of tissue damage, innate immunity, and immunopathology.
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Affiliation(s)
- Carlos Del Fresno
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.
| | - Paula Saz-Leal
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Michel Enamorado
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Stefanie K Wculek
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Sarai Martínez-Cano
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Noelia Blanco-Menéndez
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Oliver Schulz
- Immunobiology Laboratory, The Francis Crick Institute, London, UK.
| | - Mattia Gallizioli
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Francesc Miró-Mur
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Eva Cano
- Chronic Disease Programme-CROSADIS, Instituto De Salud Carlos III, Madrid, Spain
| | - Anna Planas
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Brain Ischemia and Neurodegeneration, Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), Barcelona, Spain
| | - David Sancho
- Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.
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