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Wang J, Wu J, Ma Y, Hao L, Huang W, Liu Z, Li Y. Characterization of a membrane Fcγ receptor in largemouth bass (Micropterus saloumoides) and its response to bacterial challenge. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024; 50:1123-1140. [PMID: 38407736 DOI: 10.1007/s10695-024-01325-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/16/2024] [Indexed: 02/27/2024]
Abstract
Fc receptors (FcRs), specific to the Fc portion of immunoglobulin (Ig), are required to regulate immune responses against pathogenic infections. However, FcγR is a member of FcRs family, whose structure and function remains to be elucidated in teleost fish. In this study, the FcγRII, from largemouth bass (Micropterus saloumoides), named membrane MsFcγRII (mMsFcγRII), was cloned and identified. The opening reading frame (ORF) of mMsFcγRII was 750 bp, encoding 249 amino acids with a predicted molecular mass of 27 kDa. The mMsFcγRII contained a signal peptide, two Ig domains, a transmembrane domain, and an intracellular region, which was highly homology with FcγR from other teleost fish. The mRNA expression analysis showed that mMsFcγRII was widely distributed in all tested tissues and with the highest expression level in spleen. After bacterial challenge, the expression of mMsFcγRII was significantly upregulated in vivo (spleen and head kidney), as well as in vitro (leukocytes from head kidney). The subcellular localization assay revealed that mMsFcγRII was mostly observed on the membrane of HEK293T cells which were transfected with mMsFcγRII overexpression plasmid. Flow cytometric analysis showed that natural mMsFcγRII protein was highly expressed in head kidney lymphocytes. Moreover, indirect immunofluorescence assay and pull-down assay indicated that mMsFcγRII could bind to IgM purified from largemouth bass serum. These results suggested that mMsFcγRII was likely to play an influential role in the immune response against pathogens and provided valuable insights for studying the function of FcRs in teleost.
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Affiliation(s)
- Jingya Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Guangzhou, 510640, China
| | - Jing Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Guangzhou, 510640, China
| | - Yanping Ma
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Guangzhou, 510640, China
| | - Le Hao
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Guangzhou, 510640, China
| | - Wen Huang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Zhenxing Liu
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China.
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Guangzhou, 510640, China.
| | - Yugu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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Niemand RR, Stafford JL. Counteracting immunotyrosine-based signaling motifs augment zebrafish leukocyte immune-type receptor-mediated phagocytic activity. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 153:105121. [PMID: 38135021 DOI: 10.1016/j.dci.2023.105121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023]
Abstract
Leukocyte immune-type receptors (LITRs) represent a polymorphic and polygenic family of immunoregulatory proteins originally discovered in channel catfish (Ictalurus punctatus; IpLITRs). Belonging to the immunoglobulin superfamily (IgSF), IpLITRs are generally classified as stimulatory or inhibitory types based on their utilization of various intracellular tyrosine-based signaling motifs. While research has shown that IpLITRs can activate as well as abrogate different immune cell effector responses including phagocytosis, recent identification of LITRs within the zebrafish genome (Danio rerio; DrLITRs) revealed the existence of fish LITR-types uniquely containing counteracting stimulatory and inhibitory cytoplasmic tail (CYT) region motifs (i.e., an immunoreceptor tyrosine-based activation motif; ITAM, and immunoreceptor tyrosine-based inhibitory motif; ITIM) within the same receptor. This arrangement is unusual as these motifs typically exist on separate stimulatory (i.e., ITAM-containing) or inhibitory (i.e., ITIM-containing) immunoregulatory receptors that then co-engage to fine-tune cellular signaling and effector responses. Using a flow cytometric-based phagocytosis assay, we show here that engagement of DrLITR 1.2-expressing cells with antibody coated 4.5 μm beads causes a robust ITAM-dependent phagocytic response and reveal that its tandem ITIM motif surprisingly enhances the DrLITR 1.2-induced phagocytic activity while simultaneously decreasing the receptors ability to bind the beads. Confocal microscopy studies also revealed that the ITIM-associated inhibitory signaling molecule SHP-2 is localized to the phagocytic synapse during the phagocytic response. Overall, these results provide the first functional characterization of teleost immune receptors containing a tandem ITAM and ITIM and allow for the proposal of an intracytoplasmic tail signaling model for ITIM-mediated enhancement of ITAM-dependent cellular activation.
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Affiliation(s)
- Rikus R Niemand
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - James L Stafford
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
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Martin EM, Clark JC, Montague SJ, Morán LA, Di Y, Bull LJ, Whittle L, Raka F, Buka RJ, Zafar I, Kardeby C, Slater A, Watson SP. Trivalent nanobody-based ligands mediate powerful activation of GPVI, CLEC-2, and PEAR1 in human platelets whereas FcγRIIA requires a tetravalent ligand. J Thromb Haemost 2024; 22:271-285. [PMID: 37813196 DOI: 10.1016/j.jtha.2023.09.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Clustering of the receptors glycoprotein receptor VI (GPVI), C-type lectin-like receptor 2 (CLEC-2), low-affinity immunoglobulin γ Fc region receptor II-a (FcγRIIA), and platelet endothelial aggregation receptor 1 (PEAR1) leads to powerful activation of platelets through phosphorylation of tyrosine in their cytosolic tails and initiation of downstream signaling cascades. GPVI, CLEC-2, and FcγRIIA signal through YxxL motifs that activate Syk. PEAR1 signals through a YxxM motif that activates phosphoinositide 3-kinase. Current ligands for these receptors have an undefined valency and show significant batch variation and, for some, uncertain specificity. OBJECTIVES We have raised nanobodies against each of these receptors and multimerized them to identify the minimum number of epitopes to achieve robust activation of human platelets. METHODS Divalent and trivalent nanobodies were generated using a flexible glycine-serine linker. Tetravalent nanobodies utilize a mouse Fc domain (IgG2a, which does not bind to FcγRIIA) to dimerize the divalent nanobody. Ligand affinity measurements were determined by surface plasmon resonance. Platelet aggregation, adenosine triphosphate secretion, and protein phosphorylation were analyzed using standardized methods. RESULTS Multimerization of the nanobodies led to a stepwise increase in affinity with divalent and higher-order nanobody oligomers having sub-nanomolar affinity. The trivalent nanobodies to GPVI, CLEC-2, and PEAR1 stimulated powerful and robust platelet aggregation, secretion, and protein phosphorylation at low nanomolar concentrations. A tetravalent nanobody was required to activate FcγRIIA with the concentration-response relationship showing a greater variability and reduced sensitivity compared with the other nanobody-based ligands, despite a sub-nanomolar binding affinity. CONCLUSION The multivalent nanobodies represent a series of standardized, potent agonists for platelet glycoprotein receptors. They have applications as research tools and in clinical assays.
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Affiliation(s)
- Eleyna M Martin
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK.
| | - Joanne C Clark
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Centre of Membrane Proteins and Receptors (COMPARE), The Universities of Birmingham and Nottingham, The Midlands, UK
| | - Samantha J Montague
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Luis A Morán
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Ying Di
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Lily J Bull
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Luke Whittle
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Florije Raka
- Institute for Transfusion Medicine-Skopje, Skopje, North Macedonia
| | - Richard J Buka
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Idrees Zafar
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Caroline Kardeby
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Current address: School of Biosciences, College of Health and Life Sciences, Aston University, Birmingham, UK
| | - Alexandre Slater
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Steve P Watson
- Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Centre of Membrane Proteins and Receptors (COMPARE), The Universities of Birmingham and Nottingham, The Midlands, UK.
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Gaud G, Achar S, Bourassa FXP, Davies J, Hatzihristidis T, Choi S, Kondo T, Gossa S, Lee J, Juneau P, Taylor N, Hinrichs CS, McGavern DB, François P, Altan-Bonnet G, Love PE. CD3ζ ITAMs enable ligand discrimination and antagonism by inhibiting TCR signaling in response to low-affinity peptides. Nat Immunol 2023; 24:2121-2134. [PMID: 37945821 DOI: 10.1038/s41590-023-01663-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 09/29/2023] [Indexed: 11/12/2023]
Abstract
The T cell antigen receptor (TCR) contains ten immunoreceptor tyrosine-based activation motif (ITAM) signaling sequences distributed within six CD3 subunits; however, the reason for such structural complexity and multiplicity is unclear. Here we evaluated the effect of inactivating the three CD3ζ chain ITAMs on TCR signaling and T cell effector responses using a conditional 'switch' mouse model. Unexpectedly, we found that T cells expressing TCRs containing inactivated (non-signaling) CD3ζ ITAMs (6F-CD3ζ) exhibited reduced ability to discriminate between low- and high-affinity ligands, resulting in enhanced signaling and cytokine responses to low-affinity ligands because of a previously undetected inhibitory function of CD3ζ ITAMs. Also, 6F-CD3ζ TCRs were refractory to antagonism, as predicted by a new in silico adaptive kinetic proofreading model that revises the role of ITAM multiplicity in TCR signaling. Finally, T cells expressing 6F-CD3ζ displayed enhanced cytolytic activity against solid tumors expressing low-affinity ligands, identifying a new counterintuitive approach to TCR-mediated cancer immunotherapy.
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Affiliation(s)
- Guillaume Gaud
- Hematopoiesis and Lymphocyte Biology Section, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Sooraj Achar
- Immunodynamics Section, Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - François X P Bourassa
- Département de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal, Quebec, Canada
- Department of Physics, McGill University, Montréal QC, Canada
| | - John Davies
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Department of Safety Assessment, Genentech, Inc., San Francisco, CA, USA
| | - Teri Hatzihristidis
- Hematopoiesis and Lymphocyte Biology Section, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Seeyoung Choi
- Hematopoiesis and Lymphocyte Biology Section, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Taisuke Kondo
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Selamawit Gossa
- Viral Immunology & Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Jan Lee
- Hematopoiesis and Lymphocyte Biology Section, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Paul Juneau
- National Institutes of Health Library, Office of Research Services, National Institutes of Health, Bethesda, MD, USA
| | - Naomi Taylor
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Christian S Hinrichs
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Dorian B McGavern
- Viral Immunology & Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - Paul François
- Département de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal, Quebec, Canada
- Mila Québec, Montréal, Quebec, Canada
| | - Grégoire Altan-Bonnet
- Immunodynamics Section, Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Paul E Love
- Hematopoiesis and Lymphocyte Biology Section, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, Bethesda, MD, USA.
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Jiang T, Xia T, Qiao F, Wang N, Jiang Y, Xin H. Role and Regulation of Transcription Factors in Osteoclastogenesis. Int J Mol Sci 2023; 24:16175. [PMID: 38003376 PMCID: PMC10671247 DOI: 10.3390/ijms242216175] [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: 09/24/2023] [Revised: 11/01/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Bones serve mechanical and defensive functions, as well as regulating the balance of calcium ions and housing bone marrow.. The qualities of bones do not remain constant. Instead, they fluctuate throughout life, with functions increasing in some situations while deteriorating in others. The synchronization of osteoblast-mediated bone formation and osteoclast-mediated bone resorption is critical for maintaining bone mass and microstructure integrity in a steady state. This equilibrium, however, can be disrupted by a variety of bone pathologies. Excessive osteoclast differentiation can result in osteoporosis, Paget's disease, osteolytic bone metastases, and rheumatoid arthritis, all of which can adversely affect people's health. Osteoclast differentiation is regulated by transcription factors NFATc1, MITF, C/EBPα, PU.1, NF-κB, and c-Fos. The transcriptional activity of osteoclasts is largely influenced by developmental and environmental signals with the involvement of co-factors, RNAs, epigenetics, systemic factors, and the microenvironment. In this paper, we review these themes in regard to transcriptional regulation in osteoclastogenesis.
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Affiliation(s)
- Tao Jiang
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China
| | - Tianshuang Xia
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Fangliang Qiao
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Nani Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China;
| | - Yiping Jiang
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Hailiang Xin
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China
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Pei L, Hou Y, Feng Y, Li F, Su H, Zhang Y, Song Y, Liu K, Cao G. Equine β-defensin 1 regulates cytokine expression and phagocytosis in S. aureus-infected mouse monocyte macrophages via the Paxillin-FAK-PI3K pathway. Int Immunopharmacol 2023; 123:110793. [PMID: 37582311 DOI: 10.1016/j.intimp.2023.110793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/17/2023]
Abstract
β-defensin-1 (BD-1) is a rich source of disulfide bonds and antibacterial peptides that exhibit direct bactericidal function. The expression of BD-1 is primarily induced by external stimulation and is known to correlate with TLR-mediated inflammation, suggesting its association with innate immune responses. Equine β-defensin-1 (eBD-1) belongs to the BD-1 family. Our previous study demonstrated that eBD-1 enhances cytokine expression and promotes macrophage phagocytosis of S. aureus, although the underlying mechanism remains unknown. In this study, we utilized a PI-3K inhibitor (PKI-402) to treat eBD-1 -treated S. aureus-infected macrophages in vitro. Our results revealed that PKI-402 decreased the expression of eBD-1-promoted TNF-α, IL-6, CXCL10, CD40, RANTES, and p65 mRNA. To further investigate the relationship between eBD-1 and phagocytosis, we examined the expression of paxillin and FcγRIII (CD16 receptor) using western blot and immunofluorescence techniques. Our findings demonstrated that eBD-1 enhanced CD16 and paxillin expression in S. aureus -infected macrophages. Considering the correlation between paxillin expression and focal adhesion kinase (FAK), we transfected FAK siRNA into macrophages and evaluated paxillin expression using western blot analysis. Additionally, we quantified the number of S. aureus phagocytosed by macrophages. The results indicated a reduction in both paxillin expression and the number of S. aureus phagocytosed by macrophages upon FAK siRNA treatment. Our study showed the eBD-1 promotes cytokine mRNA expression in S. aureus-infected macrophages regulated by PI-3K-NF-κB pathway, and it increases macrophage phagocytosis of S. aureus associated with the FAK-paxillin signaling pathway.
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Affiliation(s)
- Le Pei
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China; Inner Mongolia Key Laboratory of Basic Veterinary Medicine, College of Veterinary, Inner Mongolia Agricultural University, Huhhot, 010018, China
| | - Yongyue Hou
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China
| | - Ying Feng
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China
| | - Feng Li
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China
| | - Hong Su
- Inner Mongolia Key Laboratory of Basic Veterinary Medicine, College of Veterinary, Inner Mongolia Agricultural University, Huhhot, 010018, China
| | - Yuemei Zhang
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China
| | - Yue Song
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, 010013, China
| | - Kun Liu
- School of Public Healthy, Inner Mongolia Medical University, Huhhot 010110, China.
| | - Guifang Cao
- Inner Mongolia Key Laboratory of Basic Veterinary Medicine, College of Veterinary, Inner Mongolia Agricultural University, Huhhot, 010018, China.
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Lin HJ, Liu Y, Caroland K, Lin J. Polarization of Cancer-Associated Macrophages Maneuver Neoplastic Attributes of Pancreatic Ductal Adenocarcinoma. Cancers (Basel) 2023; 15:3507. [PMID: 37444617 DOI: 10.3390/cancers15133507] [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: 05/31/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Mounting evidence links the phenomenon of enhanced recruitment of tumor-associated macrophages towards cancer bulks to neoplastic growth, invasion, metastasis, immune escape, matrix remodeling, and therapeutic resistance. In the context of cancer progression, naïve macrophages are polarized into M1 or M2 subtypes according to their differentiation status, gene signatures, and functional roles. While the former render proinflammatory and anticancer effects, the latter subpopulation elicits an opposite impact on pancreatic ductal adenocarcinoma. M2 macrophages have gained increasing attention as they are largely responsible for molding an immune-suppressive landscape. Through positive feedback circuits involving a paracrine manner, M2 macrophages can be amplified by and synergized with neighboring neoplastic cells, fibroblasts, endothelial cells, and non-cell autonomous constituents in the microenvironmental niche to promote an advanced disease state. This review delineates the molecular cues expanding M2 populations that subsequently convey notorious clinical outcomes. Future therapeutic regimens shall comprise protocols attempting to abolish environmental niches favoring M2 polarization; weaken cancer growth typically assisted by M2; promote the recruitment of tumoricidal CD8+ T lymphocytes and dendritic cells; and boost susceptibility towards gemcitabine as well as other chemotherapeutic agents.
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Affiliation(s)
- Huey-Jen Lin
- Department of Medical & Molecular Sciences, University of Delaware, Willard Hall Education Building, 16 West Main Street, Newark, DE 19716, USA
| | - Yingguang Liu
- Department of Molecular and Cellular Sciences, College of Osteopathic Medicine, Liberty University, 306 Liberty View Lane, Lynchburg, VA 24502, USA
| | - Kailey Caroland
- Department of Biochemistry and Molecular Biology, Molecular Medicine Graduate Program, Greenebaum Comprehensive Cancer Center, School of Medicine, University of Maryland, 108 N. Greene Street, Baltimore, MD 21201, USA
| | - Jiayuh Lin
- Department of Biochemistry and Molecular Biology, Molecular Medicine Graduate Program, Greenebaum Comprehensive Cancer Center, School of Medicine, University of Maryland, 108 N. Greene Street, Baltimore, MD 21201, USA
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8
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Shi H, Shao B. LFA-1 Activation in T-Cell Migration and Immunological Synapse Formation. Cells 2023; 12:cells12081136. [PMID: 37190045 DOI: 10.3390/cells12081136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 05/17/2023] Open
Abstract
Integrin LFA-1 plays a critical role in T-cell migration and in the formation of immunological synapses. LFA-1 functions through interacting with its ligands with differing affinities: low, intermediate, and high. Most prior research has studied how LFA-1 in the high-affinity state regulates the trafficking and functions of T cells. LFA-1 is also presented in the intermediate-affinity state on T cells, however, the signaling to activate LFA-1 to the intermediate-affinity state and the role of LFA-1 in this affinity state both remain largely elusive. This review briefly summarizes the activation and roles of LFA-1 with varied ligand-binding affinities in the regulation of T-cell migration and immunological synapse formation.
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Affiliation(s)
- Huiping Shi
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Bojing Shao
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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9
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Ismail NI. Relative expression of receptors in uterine natural killer cells compared to peripheral blood natural killer cells. Front Immunol 2023; 14:1166451. [PMID: 37051244 PMCID: PMC10083503 DOI: 10.3389/fimmu.2023.1166451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/13/2023] [Indexed: 03/29/2023] Open
Abstract
One would expect maternal immune cells to attack the invading trophoblast as the placenta is semi-allogenic. However, they appear to cooperate with the trophoblast in disrupting the arterial wall which has been determined in several studies. uNK cells are a particular type of immune cell that appears to play a role in pregnancy. As in pregnancy, the key contributors to trophoblast invasion appear to be a unique combination of genes, which appear to regulate multiple components of the interactions between placental and maternal cells, called HLA class 1b genes. The HLA class 1b genes have few alleles, which makes them unlikely to be recognized as foreign by the maternal cells. The low polymorphic properties of these particular HLAs may aid trophoblasts in actively avoiding immune attacks. This review gives a complete description of the mechanisms of interaction between HLAs and maternal uNK cells in humans.
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DAP12 deletion causes age-related motor function impairment but promotes functional recovery after sciatic nerve crush injury. Exp Neurol 2023; 360:114296. [PMID: 36503041 DOI: 10.1016/j.expneurol.2022.114296] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 11/18/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
DNAX activating protein of 12 kDa (DAP12)-deficiency mice showed impaired differentiation of oligodendrocytes and reduced myelin in the central nervous system. Whether DAP12 is expressed by Schwann cells and its roles in the peripheral nervous system (PNS) remains unknown. In this study, expression of DAP12 was detected in Schwann cells in vivo and in vitro. The DAP12-knockout (KO) mice showed age-related motor deficits and thinner myelin in the sciatic nerve than WT mice but significantly faster clinical recovery after sciatic nerve crush injury. In sciatic nerves of DAP12 KO and WT mice, proteomic profiles analysis identified 158 differentially expressed proteins (DEPs) at 8-week-old, 29 DEPs at 54-week-old and 33 DEPs at two weeks after crush injury. Typically, of the DEPs at 54-week-old, up-regulated Lgmn and down-regulated RecK and Yap1 were associated with myelin loss in the sciatic nerve of DAP12 KO mice. Upregulation of nicotinamide nucleotide transhydrogenase and haptoglobin were associated with the accumulation of macrophages in the crushed sciatic nerve of DAP12 KO mice. After crush injury, there were significantly more M1 macrophages at one-week and more M2 macrophages at two-week in sciatic nerve of DAP12 KO mice than WT mice, indicating that DAP12 deletion promotes the phenotype conversion of macrophages from M1 to M2. Collectively, our findings suggest that DAP12 may exert dual roles in the PNS including promoting the physiological myelin formation and maintenance of Schwann cells but delaying nerve repair after injury by modulating the recruitment of macrophages and phenotype conversion.
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Noor F, Ashfaq UA, Asif M, Adeel MM, Alshammari A, Alharbi M. Comprehensive computational analysis reveals YXXΦ[I/L/M/F/V] motif and YXXΦ-like tetrapeptides across HFRS causing Hantaviruses and their association with viral pathogenesis and host immune regulation. Front Immunol 2022; 13:1031608. [PMID: 36275660 PMCID: PMC9584616 DOI: 10.3389/fimmu.2022.1031608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 09/20/2022] [Indexed: 11/18/2022] Open
Abstract
Hemorrhagic fever with renal syndrome (HFRS) is an acute zoonotic disease transmitted through aerosolized excrement of rodents. The etiology of HFRS is complex due to the involvement of viral factors and host immune and genetic factors. The viral species that dominantly cause HFRS are Puumala virus (PUUV), Seoul virus (SEOV), Dobrava-Belgrade virus (DOBV), and Hantaan virus (HTNV). Despite continuous prevention and control measures, HFRS remains a significant public health problem worldwide. The nucleocapsid protein of PUUV, SEOV, DOBV, and HTNV is a multifunctional viral protein involved in various stages of the viral replication cycle. However, the exact role of nucleoproteins in viral pathogenesis is yet to be discovered. Targeting a universal host protein exploited by most viruses would be a game-changing strategy that offers broad-spectrum solutions and rapid epidemic control. The objective of this study is to understand the replication and pathogenesis of PUUV, SEOV, DOBV, and HTNV by targeting tyrosine-based motif (YXXΦ[I/L/M/F/V]) and YXXΦ-like tetrapeptides. In the light of the current study, in silico analysis uncovered many different YXXΦ[I/L/M/F/V] motifs and YXXΦ-like tetrapeptides within nucleoproteins of PUUV, SEOV, DOBV, and HTNV. Following that, the 3D structures of nucleoproteins were predicted using AlphaFold2 to map the location of YXXΦ[I/L/M/F/V] motif and YXXΦ-like tetrapeptides in a 3D environment. Further, in silico analysis and characterization of Post Translational Modifications (PTMs) revealed multiple PTMs sites within YXXΦ[I/L/M/F/V] motif and YXXΦ-like tetrapeptides, which contribute to virulence and host immune regulation. Our study proposed that the predicted YXXΦ[I/L/M/F/V] motif and YXXΦ-like tetrapeptides may confer specific functions such as virulence, host immune regulation, and pathogenesis to nucleoproteins of PUUV, SEOV, DOBV, and HTNV. However, in vivo and in vitro studies on YXXΦ[I/L/M/F/V] motif and YXXΦ-like tetrapeptides will assign new biological roles to these antiviral targets.
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Affiliation(s)
- Fatima Noor
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
- *Correspondence: Usman Ali Ashfaq,
| | - Muhammad Asif
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Muhammad Muzammal Adeel
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA, United States
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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12
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Höfle J, Trenkner T, Kleist N, Schwane V, Vollmers S, Barcelona B, Niehrs A, Fittje P, Huynh‐Tran VH, Sauter J, Schmidt AH, Peine S, Hoelzemer A, Richert L, Altfeld M, Körner C. Engagement of TRAIL triggers degranulation and IFNγ production in human natural killer cells. EMBO Rep 2022; 23:e54133. [PMID: 35758160 PMCID: PMC9346491 DOI: 10.15252/embr.202154133] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 05/16/2022] [Accepted: 05/23/2022] [Indexed: 12/12/2022] Open
Abstract
NK cells utilize a large array of receptors to screen their surroundings for aberrant or virus‐infected cells. Given the vast diversity of receptors expressed on NK cells we seek to identify receptors involved in the recognition of HIV‐1‐infected cells. By combining an unbiased large‐scale screening approach with a functional assay, we identify TRAIL to be associated with NK cell degranulation against HIV‐1‐infected target cells. Further investigating the underlying mechanisms, we demonstrate that TRAIL is able to elicit multiple effector functions in human NK cells independent of receptor‐mediated induction of apoptosis. Direct engagement of TRAIL not only results in degranulation but also IFNγ production. Moreover, TRAIL‐mediated NK cell activation is not limited to its cognate death receptors but also decoy receptor I, adding a new perspective to the perceived regulatory role of decoy receptors in TRAIL‐mediated cytotoxicity. Based on these findings, we propose that TRAIL not only contributes to the anti‐HIV‐1 activity of NK cells but also possesses a multifunctional role beyond receptor‐mediated induction of apoptosis, acting as a regulator for the induction of different effector functions.
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Affiliation(s)
| | | | | | | | | | | | | | - Pia Fittje
- Leibniz Institute of Virology Hamburg Germany
| | - Van Hung Huynh‐Tran
- Inserm, Bordeaux Population Health Research Center UMR1219 and Inria, team SISTM University of Bordeaux Bordeaux France
| | | | | | - Sven Peine
- Institute of Transfusion Medicine University Medical Center Hamburg‐Eppendorf Hamburg Germany
| | - Angelique Hoelzemer
- Leibniz Institute of Virology Hamburg Germany
- German Center for Infection Research (DZIF) Partner Site Hamburg‐Lübeck‐Borstel‐Riems Hamburg Germany
- First Department of Medicine Division of Infectious Diseases University Medical Center Hamburg‐Eppendorf Hamburg Germany
| | - Laura Richert
- Inserm, Bordeaux Population Health Research Center UMR1219 and Inria, team SISTM University of Bordeaux Bordeaux France
| | - Marcus Altfeld
- Leibniz Institute of Virology Hamburg Germany
- Institute of Immunology University Medical Center Hamburg‐Eppendorf Hamburg Germany
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13
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Kakkanas A, Karamichali E, Koufogeorgou EI, Kotsakis SD, Georgopoulou U, Foka P. Targeting the YXXΦ Motifs of the SARS Coronaviruses 1 and 2 ORF3a Peptides by In Silico Analysis to Predict Novel Virus-Host Interactions. Biomolecules 2022; 12:1052. [PMID: 36008946 PMCID: PMC9405953 DOI: 10.3390/biom12081052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 02/08/2023] Open
Abstract
The emerging SARS-CoV and SARS-CoV-2 belong to the family of "common cold" RNA coronaviruses, and they are responsible for the 2003 epidemic and the current pandemic with over 6.3 M deaths worldwide. The ORF3a gene is conserved in both viruses and codes for the accessory protein ORF3a, with unclear functions, possibly related to viral virulence and pathogenesis. The tyrosine-based YXXΦ motif (Φ: bulky hydrophobic residue-L/I/M/V/F) was originally discovered to mediate clathrin-dependent endocytosis of membrane-spanning proteins. Many viruses employ the YXXΦ motif to achieve efficient receptor-guided internalisation in host cells, maintain the structural integrity of their capsids and enhance viral replication. Importantly, this motif has been recently identified on the ORF3a proteins of SARS-CoV and SARS-CoV-2. Given that the ORF3a aa sequence is not fully conserved between the two SARS viruses, we aimed to map in silico structural differences and putative sequence-driven alterations of regulatory elements within and adjacently to the YXXΦ motifs that could predict variations in ORF3a functions. Using robust bioinformatics tools, we investigated the presence of relevant post-translational modifications and the YXXΦ motif involvement in protein-protein interactions. Our study suggests that the predicted YXXΦ-related features may confer specific-yet to be discovered-functions to ORF3a proteins, significant to the new virus and related to enhanced propagation, host immune regulation and virulence.
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Affiliation(s)
- Athanassios Kakkanas
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115-21 Athens, Greece; (A.K.); (E.K.); (E.I.K.); (U.G.)
| | - Eirini Karamichali
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115-21 Athens, Greece; (A.K.); (E.K.); (E.I.K.); (U.G.)
| | - Efthymia Ioanna Koufogeorgou
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115-21 Athens, Greece; (A.K.); (E.K.); (E.I.K.); (U.G.)
| | - Stathis D. Kotsakis
- Laboratory of Bacteriology, Hellenic Pasteur Institute, 115-21 Athens, Greece;
| | - Urania Georgopoulou
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115-21 Athens, Greece; (A.K.); (E.K.); (E.I.K.); (U.G.)
| | - Pelagia Foka
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115-21 Athens, Greece; (A.K.); (E.K.); (E.I.K.); (U.G.)
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14
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Takemura A, Ohto N, Kuwahara H, Mizuno M. Sphingoid base in pineapple glucosylceramide suppresses experimental allergy by binding leukocyte mono-immunoglobulin-like receptor 3. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2704-2709. [PMID: 34708420 PMCID: PMC9299474 DOI: 10.1002/jsfa.11610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 08/13/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The increase in patients suffering from type I hypersensitivity, including hay fever and food allergy, is a serious public health issue around the world. Recent studies have focused on allergy prevention by food factors with fewer side effects. The purpose of this study was to evaluate the effect of dietary glucosylceramide from pineapples (P-GlcCer) on type I hypersensitivity and elucidate mechanisms. RESULTS Oral administration of P-GlcCer inhibited ear edema in passive cutaneous anaphylaxis reaction. In a Caco-2/RBL-2H3 co-culture system, P-GlcCer inhibited β-hexosaminidase release from RBL-2H3 cells. The direct treatment of P-GlcCer on RBL-2H3 did not affect β-hexosaminidase release, but sphingoid base moiety of P-GlcCer did. These results predicted that sphingoid base, a metabolite of P-GlcCer, through the intestine inhibited type I hypersensitivity by inhibiting mast cell degranulation. In addition, the inhibitory effects of P-GlcCer on ear edema and degranulation of RBL-2H3 cells were canceled by pretreatment of leukocyte mono-immunoglobulin-like receptor 3 (LMIR3)-Fc, which can block LMIR3-mediated inhibitory signals. CONCLUSION It was demonstrated that a sphingoid base, one of the metabolites of P-GlcCer, may inhibit mast cell degranulation by binding to LMIR3. The oral administration of P-GlcCer is a novel and attractive food factor that acts directly on mast cells to suppress allergy. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Ayumi Takemura
- Department of Agrobioscience, Graduate School of Agricultural ScienceKobe UniversityKobeJapan
| | | | | | - Masashi Mizuno
- Department of Agrobioscience, Graduate School of Agricultural ScienceKobe UniversityKobeJapan
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15
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Li TJ, Jin KZ, Li H, Ye LY, Li PC, Jiang B, Lin X, Liao ZY, Zhang HR, Shi SM, Lin MX, Fei QL, Xiao ZW, Xu HX, Liu L, Yu XJ, Wu WD. SIGLEC15 amplifies immunosuppressive properties of tumor-associated macrophages in pancreatic cancer. Cancer Lett 2022; 530:142-155. [PMID: 35077803 DOI: 10.1016/j.canlet.2022.01.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 02/07/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) usually presents infrequent infiltration of T lymphocytes. The known immune-checkpoint inhibitors to date focus on activating T cells and manifest limited effectiveness in PDAC. SIGLEC15 was identified as a novel tumor-associated macrophage (TAM)-related immune-checkpoint in other cancer types, while its immunosuppressive role and clinical significance remained unclear in PDAC. In our study, SIGLEC15 presented immunosuppressive relevance in PDAC via bioinformatic analysis and expressed on TAM and PDAC cells. SIGLEC15+ TAM, rather than SIGLEC15+ PDAC cells or SIGLEC15- TAM, correlated with poor prognosis and immunosuppressive microenvironment in the PDAC microarray cohort. Compared with SIGLEC15- TAM, SIGLEC15+ TAM presented an M2-like phenotype that could be modulated by SIGLEC15 in a tumor cell-dependent manner. In mechanism, SIGLEC15 interacted with PDAC-expressed sialic acid, preferentially α-2, 3 sialic acids, to stimulate SYK phosphorylation in TAM, which further promoted its immunoregulatory cytokines and chemokines production. In vivo, SIGLEC15+ TAM also presented an M2-like phenotype, accelerated tumor growth, and facilitated immunosuppressive microenvironment, which was greatly abolished by SYK inhibitor. Our study highlighted a novel M2-promoting function of SIGLEC15 and strongly suggested SIGLEC15 as a potential immunotherapeutic target for PDAC.
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Affiliation(s)
- Tian-Jiao Li
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Kai-Zhou Jin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Hao Li
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Long-Yun Ye
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Peng-Cheng Li
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Bruce Jiang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xuan Lin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Zhen-Yu Liao
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Hui-Ru Zhang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Sai-Meng Shi
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Meng-Xiong Lin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Qing-Lin Fei
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Zhi-Wen Xiao
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Hua-Xiang Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Liang Liu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
| | - Xian-Jun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
| | - Wei-Ding Wu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
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16
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Abdallah F, Coindre S, Gardet M, Meurisse F, Naji A, Suganuma N, Abi-Rached L, Lambotte O, Favier B. Leukocyte Immunoglobulin-Like Receptors in Regulating the Immune Response in Infectious Diseases: A Window of Opportunity to Pathogen Persistence and a Sound Target in Therapeutics. Front Immunol 2021; 12:717998. [PMID: 34594332 PMCID: PMC8478328 DOI: 10.3389/fimmu.2021.717998] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022] Open
Abstract
Immunoregulatory receptors are essential for orchestrating an immune response as well as appropriate inflammation in infectious and non-communicable diseases. Among them, leukocyte immunoglobulin-like receptors (LILRs) consist of activating and inhibitory receptors that play an important role in regulating immune responses modulating the course of disease progression. On the one hand, inhibitory LILRs constitute a safe-guard system that mitigates the inflammatory response, allowing a prompt return to immune homeostasis. On the other hand, because of their unique capacity to attenuate immune responses, pathogens use inhibitory LILRs to evade immune recognition, thus facilitating their persistence within the host. Conversely, the engagement of activating LILRs triggers immune responses and the production of inflammatory mediators to fight microbes. However, their heightened activation could lead to an exacerbated immune response and persistent inflammation with major consequences on disease outcome and autoimmune disorders. Here, we review the genetic organisation, structure and ligands of LILRs as well as their role in regulating the immune response and inflammation. We also discuss the LILR-based strategies that pathogens use to evade immune responses. A better understanding of the contribution of LILRs to host-pathogen interactions is essential to define appropriate treatments to counteract the severity and/or persistence of pathogens in acute and chronic infectious diseases lacking efficient treatments.
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Affiliation(s)
- Florence Abdallah
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France
| | - Sixtine Coindre
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France
| | - Margaux Gardet
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France
| | - Florian Meurisse
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France
| | - Abderrahim Naji
- Department of Environmental Medicine, Cooperative Medicine Unit, Research and Education Faculty, Medicine Science Cluster, Kochi Medical School, Kochi University, Nankoku-City, Japan
| | - Narufumi Suganuma
- Department of Environmental Medicine, Cooperative Medicine Unit, Research and Education Faculty, Medicine Science Cluster, Kochi Medical School, Kochi University, Nankoku-City, Japan
| | - Laurent Abi-Rached
- Aix-Marseille University, IRD, APHM, MEPHI, IHU Mediterranean Infection, SNC5039 CNRS, Marseille, France.,SNC5039 CNRS, Marseille, France
| | - Olivier Lambotte
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France.,Public-Hospital Assistance of Paris, Department of Internal Medicine and Clinical Immunology, Paris-Saclay University Hospital Group, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Benoit Favier
- Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Inserm, CEA, Fontenay-aux-Roses, France
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17
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Elucidation of the molecular interactions that enable stable assembly and structural diversity in multicomponent immune receptors. Proc Natl Acad Sci U S A 2021; 118:2026318118. [PMID: 34155106 DOI: 10.1073/pnas.2026318118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Multicomponent immune receptors are essential complexes in which distinct ligand-recognition and signaling subunits are held together by interactions between acidic and basic residues of their transmembrane helices. A 2:1 acidic-to-basic motif in the transmembrane domains of the subunits is necessary and sufficient to assemble these receptor complexes. Here, we study a prototype for these receptors, a DAP12-NKG2C 2:1 heterotrimeric complex, in which the two DAP12 subunits each contribute a single transmembrane Asp residue, and the NKG2C subunit contributes a Lys to form the complex. DAP12 can also associate with 20 other subunits using a similar motif. Here, we use molecular-dynamics simulations to understand the basis for the high affinity and diversity of interactions in this group of receptors. Simulations of the transmembrane helices with differing protonation states of the Asp-Asp-Lys triad identified a structurally stable interaction in which a singly-protonated Asp-Asp pair forms a hydrogen-bonded carboxyl-carboxylate clamp that clasps onto a charged Lys side chain. This polar motif was also supported by density functional theory and a Protein Data Bank-wide search. In contrast, the helices are dynamic at sites distal to the stable carboxyl-carboxylate clamp motif. Such a locally stable but globally dynamic structure is well suited to accommodate the sequence and structural variations in the transmembrane helices of multicomponent receptors, which mix and match subunits to create combinatorial functional diversity from a limited number of subunits. It also supports a signaling mechanism based on multisubunit clustering rather than propagation of rigid conformational changes through the membrane.
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18
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Inoue K, Ng C, Xia Y, Zhao B. Regulation of Osteoclastogenesis and Bone Resorption by miRNAs. Front Cell Dev Biol 2021; 9:651161. [PMID: 34222229 PMCID: PMC8249944 DOI: 10.3389/fcell.2021.651161] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/12/2021] [Indexed: 01/12/2023] Open
Abstract
Osteoclasts are specialized bone-resorbing cells that contribute to physiological bone development and remodeling in bone metabolism throughout life. Abnormal production and activation of osteoclasts lead to excessive bone resorption in pathological conditions, such as in osteoporosis and in arthritic diseases with bone destruction. Recent epigenetic studies have shed novel insight into the dogma of the regulation of gene expression. microRNAs belong to a category of epigenetic regulators, which post-transcriptionally regulate and silence target gene expression, and thereby control a variety of biological events. In this review, we discuss miRNA biogenesis, the mechanisms utilized by miRNAs, several miRNAs that play important roles in osteoclast differentiation, function, survival and osteoblast-to-osteoclast communication, and their translational potential and challenges in bone biology and skeletal diseases.
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Affiliation(s)
- Kazuki Inoue
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, United States,Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Courtney Ng
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, United States
| | - Yuhan Xia
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, United States
| | - Baohong Zhao
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, United States,Department of Medicine, Weill Cornell Medicine, New York, NY, United States,Graduate Program in Cell and Developmental Biology, Weill Cornell Medicine Graduate School of Medical Sciences, New York, NY, United States,*Correspondence: Baohong Zhao,
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19
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Biological Effects of β-Glucans on Osteoclastogenesis. Molecules 2021; 26:molecules26071982. [PMID: 33915775 PMCID: PMC8036280 DOI: 10.3390/molecules26071982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 12/02/2022] Open
Abstract
Although the anti-tumor and anti-infective properties of β-glucans have been well-discussed, their role in bone metabolism has not been reviewed so far. This review discusses the biological effects of β-glucans on bone metabolisms, especially on bone-resorbing osteoclasts, which are differentiated from hematopoietic precursors. Multiple immunoreceptors that can recognize β-glucans were reported to be expressed in osteoclast precursors. Coordinated co-stimulatory signals mediated by these immunoreceptors are important for the regulation of osteoclastogenesis and bone remodeling. Curdlan from the bacterium Alcaligenes faecalis negatively regulates osteoclast differentiation in vitro by affecting both the osteoclast precursors and osteoclast-supporting cells. We also showed that laminarin, lichenan, and glucan from baker’s yeast, as well as β-1,3-glucan from Euglema gracilisas, inhibit the osteoclast formation in bone marrow cells. Consistent with these findings, systemic and local administration of β-glucan derived from Aureobasidium pullulans and Saccharomyces cerevisiae suppressed bone resorption in vivo. However, zymosan derived from S. cerevisiae stimulated the bone resorption activity and is widely used to induce arthritis in animal models. Additional research concerning the relationship between the molecular structure of β-glucan and its effect on osteoclastic bone resorption will be beneficial for the development of novel treatment strategies for bone-related diseases.
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Kinlein A, Janes ME, Kincer J, Almeida T, Matz H, Sui J, Criscitiello MF, Flajnik MF, Ohta Y. Analysis of shark NCR3 family genes reveals primordial features of vertebrate NKp30. Immunogenetics 2021; 73:333-348. [PMID: 33742259 DOI: 10.1007/s00251-021-01209-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 02/07/2021] [Indexed: 11/26/2022]
Abstract
Natural killer (NK) cells play major roles in innate immunity against viruses and cancer. Natural killer receptors (NKR) expressed by NK cells recognize foreign- or self-ligands on infected and transformed cells as well as healthy cells. NKR genes are the most rapidly evolving loci in vertebrates, and it is generally difficult to detect orthologues in different taxa. The unique exception is NKp30, an activating NKR in mammals that binds to the self-ligand B7H6. The NKp30-encoding gene, NCR3, has been found in most vertebrates including sharks, the oldest vertebrates with human-type adaptive immunity. NCR3 has a special, non-rearranging VJ-type immunoglobulin superfamily (IgSF) domain that predates the emergence of the rearranging antigen receptors. Herein we show that NCR3 loci are linked to the shark major histocompatibility complex (MHC), proving NCR3's primordial association with the MHC. We identified eight subtypes of differentially expressed highly divergent shark NCR3 family genes. Using in situ hybridization, we detected one subtype, NS344823, to be expressed by predominantly single cells outside of splenic B cell zones. The expression by non-B cells was also confirmed by PCR in peripheral blood lymphocytes. Surprisingly, high expression of NS344823 was detected in the thymic cortex, demonstrating NS344823 expression in developing T cells. Finally, we show for the first time that shark T cells are found as single cells or in small clusters in the splenic red pulp, also unassociated with the large B cell follicles we previously identified.
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Affiliation(s)
- Allison Kinlein
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Morgan E Janes
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Jacob Kincer
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Tereza Almeida
- Centro de Investigacão Em Biodiversidade E Recursos Genéticos, CIBIO-InBIO, Campus Agrário de Vairão, Universidade Do Porto, Vairão, Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade Do Porto, Porto, Portugal
| | - Hanover Matz
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Jianxin Sui
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Michael F Criscitiello
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843, USA
| | - Martin F Flajnik
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Yuko Ohta
- Department of Microbiology and Immunology, University of Maryland Baltimore, Baltimore, MD, 21201, USA.
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21
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Wang H, Wei W, Cao Q, Xu M, Chen Q, Lv Y, Tan C, Dai M, Xu X, Chen H, Wang X. Sialylated Lipooligosaccharide Contributes to Glaesserella parasuis Penetration of Porcine Respiratory Epithelial Barrier. ACS Infect Dis 2021; 7:661-671. [PMID: 33645216 DOI: 10.1021/acsinfecdis.0c00850] [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] [Indexed: 02/04/2023]
Abstract
Pathogens utilize various mechanisms to escape host immunological surveillance, break down different tissue barriers, and cause infection. Sialylation is an important surface modification of bacterial outer membrane components, especially the lipooligosaccharide of Gram-negative bacteria. It is widely involved in multiple microbe-host interactions, such as bacterial virulence regulation, host recognition, and immune evasion. There are some sialylation modifications on the lipooligosaccharide structure of Glaesserella parasuis (G. parasuis) virulent strains. However, the role of lipooligosaccharide sialylation modification in the process of G. parasuis infection and penetration of the porcine respiratory epithelial barrier is still unclear. In this study, we investigated the role and mechanism of lsgB-mediated lipooligosaccharide sialylation in G. parasuis invasion of the host respiratory epithelial barrier. Specifically, G. parasuis lsgB-mediated lipooligosaccharide sialylation and sialylated-lipooligosaccharide interacted with Siglec1 on porcine alveolar macrophages 3D4/21 and triggered the subsequent generation of TGFβ1 through Siglec1/Dap12/Syk/p38 signaling cascade. TGFβ1 decreased the tracheal epithelial tight junctions and the expression of extracellular adhesion molecule fibronectin, thus assisting G. parasuis invasion and entry to the respiratory epithelial barrier. Characterizing the potential effects and mechanisms of lipooligosaccharide sialylation-mediated TGFβ1 production would further expand our current knowledge on the pathogenesis of G. parasuis which will contribute to better prevention and control of G. parasuis infection in piglets.
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Affiliation(s)
- Huan Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Wenbin Wei
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Qi Cao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Manman Xu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Qichao Chen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Yujin Lv
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan 450046, China
| | - Chen Tan
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, Hubei 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China
| | - Menghong Dai
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, Hubei 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China
| | - Xiaojuan Xu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, Hubei 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China
| | - Huanchun Chen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, Hubei 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China
| | - Xiangru Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People’s Republic of China, Wuhan, Hubei 430070, China
- International Research Center for Animal Disease, Ministry of Science and Technology of the People’s Republic of China, Wuhan, Hubei 430070, China
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22
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The immune receptor CD300e negatively regulates T cell activation by impairing the STAT1-dependent antigen presentation. Sci Rep 2020; 10:16501. [PMID: 33020563 PMCID: PMC7536427 DOI: 10.1038/s41598-020-73552-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/17/2020] [Indexed: 12/14/2022] Open
Abstract
CD300e is a surface receptor, expressed by myeloid cells, involved in the tuning of immune responses. CD300e engagement was reported to provide the cells with survival signals, to trigger the expression of activation markers and the release of pro-inflammatory cytokines. Hence, CD300e is considered an immune activating receptor. In this study, we demonstrate that the ligation of CD300e in monocytes hampers the expression of the human leukocyte antigen (HLA) class II, affecting its synthesis. This effect, which is associated with the transcription impairment of the signal transducer and activator of transcription 1 (STAT1), overcomes the capacity of interferon gamma (IFN-γ) to promote the expression of the antigen-presenting molecules. Importantly, the decreased expression of HLA-II on the surface of CD300e-activated monocytes negatively impacts their capacity to activate T cells in an antigen-specific manner. Notably, unlike in vitro- differentiated macrophages which do not express CD300e, the immune receptor is expressed by tissue macrophages. Taken together, our findings argue against the possibility that this molecule should be considered an activating immune receptor sensu stricto. Moreover, our results support the notion that CD300e might be a new player in the regulation of the expansion of T cell-mediated responses.
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23
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Masaki K, Hiraki Y, Onishi H, Satoh Y, Roche PA, Tanaka S, Furuta K. Ligation of MHC Class II Induces PKC-Dependent Clathrin-Mediated Endocytosis of MHC Class II. Cells 2020; 9:E1810. [PMID: 32751549 PMCID: PMC7465434 DOI: 10.3390/cells9081810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/24/2020] [Accepted: 07/28/2020] [Indexed: 11/17/2022] Open
Abstract
In addition to antigen presentation to CD4+ T cells, aggregation of cell surface major histocompatibility complex class II (MHC-II) molecules induces signal transduction in antigen presenting cells that regulate cellular functions. We previously reported that crosslinking of MHC-II induced the endocytosis of MHC-II, which was associated with decreased surface expression levels in murine dendritic cells (DCs) and resulted in impaired activation of CD4+ T cells. However, the downstream signal that induces MHC-II endocytosis remains to be elucidated. In this study, we found that the crosslinking of MHC-II induced intracellular Ca2+ mobilization, which was necessary for crosslinking-induced MHC-II endocytosis. We also found that these events were suppressed by inhibitors of Syk and phospholipase C (PLC). Treatments with a phorbol ester promoted MHC-II endocytosis, whereas inhibitors of protein kinase C (PKC) suppressed crosslinking-induced endocytosis of MHC-II. These results suggest that PKC could be involved in this process. Furthermore, crosslinking-induced MHC-II endocytosis was suppressed by inhibitors of clathrin-dependent endocytosis. Our results indicate that the crosslinking of MHC-II could stimulate Ca2+ mobilization and induce the clathrin-dependent endocytosis of MHC-II in murine DCs.
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Affiliation(s)
- Kento Masaki
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Yuhji Hiraki
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Hiroka Onishi
- Department of Immunobiology, Faculty of Pharmacy and Pharmaceutical Sciences, Okayama University, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan;
| | - Yuka Satoh
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Paul A. Roche
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Satoshi Tanaka
- Department of Pharmacology, Division of Pathological Sciences, Kyoto Pharmaceutical University, Misasagi Nakauchi-cho 5, Yamashina-ku, Kyoto 607-8414, Japan;
| | - Kazuyuki Furuta
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
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24
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Effendi WI, Nagano T, Hasan H, Yudhawati R. Immunoregulatory Property of C-Type Lectin-Like Receptors in Fibrosing Interstitial Lung Diseases. Int J Mol Sci 2020; 21:E3665. [PMID: 32455964 PMCID: PMC7279300 DOI: 10.3390/ijms21103665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 11/16/2022] Open
Abstract
The innate immune system identifies exogenous threats or endogenous stress through germline-encoded receptors called pattern recognition receptors (PRRs) that initiate consecutive downstream signaling pathways to control immune responses. However, the contribution of the immune system and inflammation to fibrosing interstitial lung diseases (ILD) remains poorly understood. Immunoreceptor tyrosine-based motif-bearing C-type lectin-like receptors (CTLRs) may interact with various immune cells during tissue injury and wound repair processes. Dectin-1 is a CTLR with dominant mechanisms manifested through its intracellular signaling cascades, which regulate fibrosis-promoting properties through gene transcription and cytokine activation. Additionally, immune impairment in ILD facilitates microbiome colonization; hence, Dectin-1 is the master protector in host pulmonary defense against fungal invasion. Recent progress in determining the signaling pathways that control the balance of fibrosis has implicated immunoreceptor tyrosine-based motif-bearing CTLRs as being involved, either directly or indirectly, in the pathogenesis of fibrosing ILD.
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Affiliation(s)
- Wiwin Is Effendi
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan;
- Department of Pulmonology and Respiratory Medicine, Medical Faculty of Airlangga University, Surabaya 60131, Indonesia; (H.H.); (R.Y.)
| | - Tatsuya Nagano
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan;
| | - Helmia Hasan
- Department of Pulmonology and Respiratory Medicine, Medical Faculty of Airlangga University, Surabaya 60131, Indonesia; (H.H.); (R.Y.)
| | - Resti Yudhawati
- Department of Pulmonology and Respiratory Medicine, Medical Faculty of Airlangga University, Surabaya 60131, Indonesia; (H.H.); (R.Y.)
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25
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Gp37 Regulates the Pathogenesis of Avian Leukosis Virus Subgroup J via Its C Terminus. J Virol 2020; 94:JVI.02180-19. [PMID: 32213616 DOI: 10.1128/jvi.02180-19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/17/2020] [Indexed: 12/14/2022] Open
Abstract
Different from other subgroups of avian leukosis viruses (ALVs), ALV-J is highly pathogenic. It is the main culprit causing myeloid leukemia and hemangioma in chickens. The distinctiveness of the env gene of ALV-J, with low homology to those of other ALVs, is linked to its unique pathogenesis, but the underlying mechanism remains unclear. Previous studies show that env of ALV-J can be grouped into three species based on the tyrosine motifs in the cytoplasmic domain (CTD) of Gp37, i.e., the inhibitory, bifunctional, and active groups. To explore whether the C terminus or the tyrosine motifs in the CTD of Gp37 affect the pathogenicity of ALV-J, a set of ALV-J infectious clones containing different C termini of Gp37 or the mutants at the tyrosine sites were tested in vitro and in vivo Viral growth kinetics indicated not only that ALV-J with active env is the fastest in replication and ALV-J with inhibitory env is the lowest but also that the tyrosine sites essentially affected the replication of ALV-J. Moreover, in vivo studies demonstrated that chickens infected by ALV-J with active or bifunctional env showed higher viremia, cloacal viral shedding, and viral tissue load than those infected by ALV-J with inhibitory env Notably, the chickens infected by ALV-J with active or bifunctional env showed significant loss of body weight compared with the control chickens. Taken together, these findings reveal that the C terminus of Gp37 plays a vital role in ALV-J pathogenesis, and change from inhibitory env to bifunctional or active env increases the pathogenesis of ALV-J.IMPORTANCE ALV-J can cause severe immunosuppression and myeloid leukemia in infected chickens. However, no vaccine or antiviral drug is available against ALV-J, and the mechanism for ALV-J pathogenesis needs to be elucidated. It is generally believed that gp85 and LTR of ALV contribute to its pathogenesis. Here, we found that the C terminus and the tyrosine motifs (YxxM, ITIM, and ITAM-like) in the CTD of Gp37 of ALV-J could affect the pathogenicity of ALV-J in vitro and in vivo The pathogenicity of ALV-J with Gp37 containing ITIM only was significantly less than ALV-J with Gp37 containing both YxxM and ITIM and ALV-J with Gp37 containing both YxxM and ITAM-like. This study highlights the vital role of the C terminus of Gp37 in the pathogenesis of ALV-J and thus provides a new perspective to elucidate the interaction between ALV-J and its host and a molecular basis to develop efficient strategies against ALV-J.
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26
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Vitallé J, Terrén I, Orrantia A, Bilbao A, Gamboa PM, Borrego F, Zenarruzabeitia O. The Expression and Function of CD300 Molecules in the Main Players of Allergic Responses: Mast Cells, Basophils and Eosinophils. Int J Mol Sci 2020; 21:ijms21093173. [PMID: 32365988 PMCID: PMC7247439 DOI: 10.3390/ijms21093173] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/17/2020] [Accepted: 04/27/2020] [Indexed: 02/06/2023] Open
Abstract
Allergy is the host immune response against non-infectious substances called allergens. The prevalence of allergic diseases is increasing worldwide. However, while some drugs counteract the symptomatology caused by allergic reactions, no completely effective treatments for allergic diseases have been developed yet. In this sense, the ability of surface activating and inhibitory receptors to modulate the function of the main effector cells of allergic responses makes these molecules potential pharmacological targets. The CD300 receptor family consists of members with activating and inhibitory capabilities mainly expressed on the surface of immune cells. Multiple studies in the last few years have highlighted the importance of CD300 molecules in several pathological conditions. This review summarizes the literature on CD300 receptor expression, regulation and function in mast cells, basophils and eosinophils, the main players of allergic responses. Moreover, we review the involvement of CD300 receptors in the pathogenesis of certain allergic diseases, as well as their prospective use as therapeutic targets for the treatment of IgE-dependent allergic responses.
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Affiliation(s)
- Joana Vitallé
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
| | - Iñigo Terrén
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
| | - Ane Orrantia
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
| | - Agurtzane Bilbao
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
- Pediatrics Service, Cruces University Hospital, 48903 Barakaldo, Spain
| | - Pedro M. Gamboa
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
- Allergology Service, Cruces University Hospital, 48903 Barakaldo, Spain
| | - Francisco Borrego
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Olatz Zenarruzabeitia
- Immunopathology Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (J.V.); (I.T.); (A.O.); (A.B.); (P.M.G.); (F.B.)
- Correspondence: ; Tel.: +34-699-227-735
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27
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Choi Y, Yoo JH, Lee JH, Lee Y, Bae MK, Kim YD, Kim HJ. Connective tissue growth factor (CTGF) regulates the fusion of osteoclast precursors by inhibiting Bcl6 in periodontitis. Int J Med Sci 2020; 17:647-656. [PMID: 32210715 PMCID: PMC7085216 DOI: 10.7150/ijms.41075] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/11/2020] [Indexed: 11/28/2022] Open
Abstract
Connective tissue growth factor (CTGF), an extracellular matrix protein with various biological functions, is known to be upregulated in multiple chronic diseases such as liver fibrosis and congestive heart failure, but the mechanism it undertakes to cause alveolar bone loss in periodontitis remains elusive. The present study therefore investigates the pathways involving CTGF in chronic periodontitis. RNA sequencing revealed a notable increase in the expression of CTGF in chronic periodontitis tissues. Also, TRAP staining, TRAP activity and bone resorption assays showed that osteoclast formation and function is significantly facilitated in CTGF-treated bone marrow-derived macrophages (BMMs). Interestingly, western blotting and immunofluorescence staining results displayed that CTGF had little effect on the osteoclastogenic differentiation mediated by the positive regulators of osteoclastogenesis such as nuclear factor of activated T cells 1 (NFATc1). However, following results showed that both the mRNA and protein expressions of B cell lymphoma 6 (Bcl6), a transcriptional repressor of "osteoclastic" genes, were significantly downregulated by CTGF treatment. Moreover, CTGF upregulated the expressions of v-ATPase V0 subunit d2 (ATP6v0d2) and Dendritic cell-specific transmembrane protein (DC-STAMP) which are osteoclastic genes specifically required for osteoclast cell-cell fusion in pre-osteoclasts. Findings from this study suggest that CTGF promotes the fusion of pre-osteoclasts by downregulating Bcl6 and subsequently increasing the expression of DC-STAMP in periodontitis. Understanding this novel mechanism that leads to increased osteoclastogenesis in periodontitis may be employed for the development of new therapeutic targets for preventing periodontitis-associated alveolar bone resorption.
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Affiliation(s)
- YunJeong Choi
- Department of Oral Physiology, BK21 PLUS Project, Periodontal Diseases Signaling Network Research Center, and Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea, 50611
| | - Ji Hyun Yoo
- Department of Oral Physiology, BK21 PLUS Project, Periodontal Diseases Signaling Network Research Center, and Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea, 50611
| | - Jae-Hyung Lee
- Department of Maxillofacial Biomedical Engineering, School of Dentistry, Department of Life and Nanopharmaceutical Sciences, Kyung Hee Medical Science Institute, Kyung Hee University, Seoul, Republic of Korea, 02447
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea, 41940
| | - Moon-Kyoung Bae
- Department of Oral Physiology, BK21 PLUS Project, Periodontal Diseases Signaling Network Research Center, and Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea, 50611
| | - Yong-Deok Kim
- Department of Oral and Maxillofacial Surgery, Dental Research Institute, and Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea, 50611
| | - Hyung Joon Kim
- Department of Oral Physiology, BK21 PLUS Project, Periodontal Diseases Signaling Network Research Center, and Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea, 50611
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28
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Inoue K, Hu X, Zhao B. Regulatory network mediated by RBP-J/NFATc1-miR182 controls inflammatory bone resorption. FASEB J 2019; 34:2392-2407. [PMID: 31908034 DOI: 10.1096/fj.201902227r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/21/2019] [Accepted: 11/29/2019] [Indexed: 12/13/2022]
Abstract
Bone resorption is a severe consequence of inflammatory diseases associated with osteolysis, such as rheumatoid arthritis (RA), often leading to disability in patients. In physiological conditions, the differentiation of bone-resorbing osteoclasts is delicately regulated by the balance between osteoclastogenic and anti-osteoclastogenic mechanisms. Inflammation has complex impact on osteoclastogenesis and bone destruction, and the underlying mechanisms of which, especially feedback inhibition, are underexplored. Here, we identify a novel regulatory network mediated by RBP-J/NFATc1-miR182 in TNF-induced osteoclastogenesis and inflammatory bone resorption. This network includes negative regulator RBP-J and positive regulators, NFATc1 and miR182, of osteoclast differentiation. In this network, miR182 is a direct target of both RBP-J and NFATc1. RBP-J represses, while NFATc1 activates miR182 expression through binding to specific open chromatin regions in the miR182 promoter. Inhibition of miR182 by RBP-J servers as a critical mechanism that limits TNF-induced osteoclast differentiation and inflammatory bone resorption. Inflammation, such as that which occurs in RA, shifts the expression levels of the components in this network mediated by RBP-J/NFATc1-miR182-FoxO3/PKR (previously identified miR182 targets) towards more osteoclastogenic, rather than healthy conditions. Treatment with TNF inhibitors in RA patients reverses the expression changes of the network components and osteoclastogenic potential. Thus, this network controls the balance between activating and repressive signals that determine the extent of osteoclastogenesis. These findings collectively highlight the biological significance and translational implication of this newly identified intrinsic regulatory network in inflammatory osteoclastogenesis and osteolysis.
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Affiliation(s)
- Kazuki Inoue
- Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.,Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Xiaoyu Hu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China
| | - Baohong Zhao
- Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.,Department of Medicine, Weill Cornell Medical College, New York, NY, USA.,Graduate Program in Cell and Development Biology, Weill Cornell Graduate School of Medical Sciences of Cornell University, New York, NY, USA
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29
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Abstract
Chronic inflammation is one of the most evident and common pathological conditions leading to deregulated osteoclastogenesis and bone remodeling. Tumor necrosis factor (TNF) as a pleiotropic cytokine plays a key role, not only in inflammation, but also in bone erosion in diseases associated with bone loss. TNF can stimulate the proliferation of osteoclast precursors and, in most conditions, act together with other cytokines and growth factors such as receptor activator of nuclear factor (NF)-[kappa]B ligand (RANKL), interleukin-6, and transforming growth factor beta to synergistically promote osteoclast formation and bone resorption in vivo. A longstanding enigma in the field is why TNF alone is not able to induce osteoclast differentiation as effectively as the same superfamily member RANKL, a physiological master osteoclastogenic cytokine. Recent studies have highlighted several lines of evidence showing the intrinsic mechanisms through RBP-J, NF-[kappa]B p100/TNF receptor-associated factor 3, or interferon regulatory factor-8 that restrain TNF-induced osteoclast differentiation and bone resorption. These feedback inhibitory mechanisms driven by TNF shed light into the current paradigm of osteoclastogenesis and would provide novel therapeutic implications on controlling inflammatory bone resorption.
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Affiliation(s)
- Baohong Zhao
- Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, Graduate Program in Biochemistry, Cell and Molecular Biology, Weill Cornell Graduate School of Medical Sciences, and Department of Medicine, Weill Cornell Medical College, 535 E. 70th Street New York, New York 10021
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30
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Maurizi A, Capulli M, Curle A, Patel R, Ucci A, Côrtes JA, Oxford H, Lamandé SR, Bateman JF, Rucci N, Teti A. Extra-skeletal manifestations in mice affected by Clcn7-dependent autosomal dominant osteopetrosis type 2 clinical and therapeutic implications. Bone Res 2019; 7:17. [PMID: 31231577 PMCID: PMC6559989 DOI: 10.1038/s41413-019-0055-x] [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: 09/11/2018] [Accepted: 05/10/2019] [Indexed: 12/16/2022] Open
Abstract
Autosomal dominant osteopetrosis type 2 (ADO2) is a high-density brittle bone disease characterized by bone pain, multiple fractures and skeletal-related events, including nerve compression syndrome and hematological failure. We demonstrated that in mice carrying the heterozygous Clcn7G213R mutation, whose human mutant homolog CLCN7G215R affects patients, the clinical impacts of ADO2 extend beyond the skeleton, affecting several other organs. The hallmark of the extra-skeletal alterations is a consistent perivascular fibrosis, associated with high numbers of macrophages and lymphoid infiltrates. Fragmented clinical information in a small cohort of patients confirms extra-skeletal alterations consistent with a systemic disease, in line with the observation that the CLCN7 gene is expressed in many organs. ADO2 mice also show anxiety and depression and their brains exhibit not only perivascular fibrosis but also β-amyloid accumulation and astrogliosis, suggesting the involvement of the nervous system in the pathogenesis of the ADO2 extra-skeletal alterations. Extra-skeletal organs share a similar cellular pathology, confirmed also in vitro in bone marrow mononuclear cells and osteoclasts, characterized by an impairment of the exit pathway of the Clcn7 protein product, ClC7, through the Golgi, with consequent reduced ClC7 expression in late endosomes and lysosomes, associated with high vesicular pH and accumulation of autophagosome markers. Finally, an experimental siRNA therapy, previously proven to counteract the bone phenotype, also improves the extra-skeletal alterations. These results could have important clinical implications, supporting the notion that a systematic evaluation of ADO2 patients for extra-skeletal symptoms could help improve their diagnosis, clinical management, and therapeutic options.
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Affiliation(s)
- Antonio Maurizi
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Mattia Capulli
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Annabel Curle
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Rajvi Patel
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Argia Ucci
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Juliana Alves Côrtes
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Harriet Oxford
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Shireen R Lamandé
- 2Murdoch Children's Research Institute and University of Melbourne, Melbourne, Australia
| | - John F Bateman
- 2Murdoch Children's Research Institute and University of Melbourne, Melbourne, Australia
| | - Nadia Rucci
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Anna Teti
- 1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
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31
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de Tymowski C, Heming N, Correia MD, Abbad L, Chavarot N, Le Stang MB, Flament H, Bex J, Boedec E, Bounaix C, Soler-Torronteras R, Denamur E, Galicier L, Oksenhendler E, Fehling HJ, Pinheiro da Silva F, Benhamou M, Monteiro RC, Ben Mkaddem S. CD89 Is a Potent Innate Receptor for Bacteria and Mediates Host Protection from Sepsis. Cell Rep 2019; 27:762-775.e5. [DOI: 10.1016/j.celrep.2019.03.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 01/11/2019] [Accepted: 03/15/2019] [Indexed: 12/28/2022] Open
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32
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Nakano S, Inoue K, Xu C, Deng Z, Syrovatkina V, Vitone G, Zhao L, Huang XY, Zhao B. G-protein Gα 13 functions as a cytoskeletal and mitochondrial regulator to restrain osteoclast function. Sci Rep 2019; 9:4236. [PMID: 30862896 PMCID: PMC6414604 DOI: 10.1038/s41598-019-40974-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 02/19/2019] [Indexed: 12/13/2022] Open
Abstract
Excessive osteoclastic bone erosion disrupts normal bone remodeling and leads to bone loss in many skeletal diseases, including inflammatory arthritis, such as rheumatoid arthritis (RA) and psoriatic arthritis, periodontitis and peri-prosthetic loosening. Functional control of osteoclasts is critical for the maintenance of bone homeostasis. However, the mechanisms that restrain osteoclast resorptive function are not fully understood. In this study, we identify a previously unrecognized role for G-protein Gα13 in inhibition of osteoclast adhesion, fusion and bone resorptive function. Gα13 is highly expressed in mature multinucleated osteoclasts, but not during early differentiation. Deficiency of Gα13 in myeloid osteoclast lineage (Gα13ΔM/ΔM mice) leads to super spread morphology of multinucleated giant osteoclasts with elevated bone resorptive capacity, corroborated with an osteoporotic bone phenotype in the Gα13ΔM/ΔM mice. Mechanistically, Gα13 functions as a brake that restrains the c-Src, Pyk2, RhoA-Rock2 mediated signaling pathways and related gene expressions to control the ability of osteoclasts in fusion, adhesion, actin cytoskeletal remodeling and resorption. Genome wide analysis reveals cytoskeleton related genes that are suppressed by Gα13, identifying Gα13 as a critical cytoskeletal regulator in osteoclasts. We also identify a genome wide regulation of genes responsible for mitochondrial biogenesis and function by Gα13 in osteoclasts. Furthermore, the significant correlation between Gα13 expression levels, TNF activity and RA disease activity in RA patients suggests that the Gα13 mediated mechanisms represent attractive therapeutic targets for diseases associated with excessive bone resorption.
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Affiliation(s)
- Shinichi Nakano
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA
| | - Kazuki Inoue
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA
| | - Cheng Xu
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA
| | - Zhonghao Deng
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA
- Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Viktoriya Syrovatkina
- Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York, USA
| | - Gregory Vitone
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA
| | - Liang Zhao
- Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xin-Yun Huang
- Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York, USA
| | - Baohong Zhao
- Arthritis and Tissue Degeneration Program and The David Z, Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, New York, USA.
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA.
- Graduate Program in Cell & Developmental Biology, Weill Cornell Graduate School of Medical Sciences, New York, New York, USA.
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33
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Newling M, Hoepel W, Vogelpoel LTC, Heineke MH, van Burgsteden JA, Taanman-Kueter EWM, Eggink D, Kuijpers TW, Beaumont T, van Egmond M, Kapsenberg ML, Baeten DLP, den Dunnen J, Jong ECD. Fc gamma receptor IIa suppresses type I and III interferon production by human myeloid immune cells. Eur J Immunol 2018; 48:1796-1809. [PMID: 30184252 PMCID: PMC6282563 DOI: 10.1002/eji.201847615] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/17/2018] [Accepted: 09/03/2018] [Indexed: 02/06/2023]
Abstract
Type I and type III interferons (IFNs) are fundamental for antiviral immunity, but prolonged expression is also detrimental to the host. Therefore, upon viral infection high levels of type I and III IFNs are followed by a strong and rapid decline. However, the mechanisms responsible for this suppression are still largely unknown. Here, we show that IgG opsonization of model viruses influenza and respiratory syncytial virus (RSV) strongly and selectively suppressed type I and III IFN production by various human antigen-presenting cells. This suppression was induced by selective inhibition of TLR, RIG-I-like receptor, and STING-dependent type I and III IFN gene transcription. Surprisingly, type I and III IFN suppression was mediated by Syk and PI3K independent inhibitory signaling via FcγRIIa, thereby identifying a novel non-canonical FcγRIIa pathway in myeloid cells. Together, these results indicate that IgG opsonization of viruses functions as a novel negative feedback mechanism in humans, which may play a role in the selective suppression of type I and III IFN responses during the late-phase of viral infections. In addition, activation of this pathway may be used as a tool to limit type I IFN-associated pathology.
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Affiliation(s)
- Melissa Newling
- Amsterdam Rheumatology and Immunology Center, location Academic Medical Center (AMC), Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Willianne Hoepel
- Amsterdam Rheumatology and Immunology Center, location Academic Medical Center (AMC), Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Lisa T C Vogelpoel
- Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Marieke H Heineke
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Amsterdam, The Netherlands
| | - Johan A van Burgsteden
- Amsterdam Rheumatology and Immunology Center, location Academic Medical Center (AMC), Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Esther W M Taanman-Kueter
- Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Dirk Eggink
- Amsterdam UMC, University of Amsterdam, Department of Medical Microbiology, Amsterdam, The Netherlands
| | - Taco W Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Amsterdam, The Netherlands.,Department of Pediatric Hematology, Immunology and Infectious Disease, Emma Children's Hospital, AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Tim Beaumont
- AIMM Therapeutics, AMC, Amsterdam, The Netherlands
| | - Marjolein van Egmond
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Amsterdam, The Netherlands.,Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Surgery, Amsterdam, the Netherlands
| | - Martien L Kapsenberg
- Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Dominique L P Baeten
- Amsterdam Rheumatology and Immunology Center, location Academic Medical Center (AMC), Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Jeroen den Dunnen
- Amsterdam Rheumatology and Immunology Center, location Academic Medical Center (AMC), Amsterdam, The Netherlands.,Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
| | - Esther C de Jong
- Amsterdam UMC, University of Amsterdam, Department of Experimental Immunology, Amsterdam, The Netherlands
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34
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Nombela I, Ortega-Villaizan MDM. Nucleated red blood cells: Immune cell mediators of the antiviral response. PLoS Pathog 2018; 14:e1006910. [PMID: 29698529 PMCID: PMC5919432 DOI: 10.1371/journal.ppat.1006910] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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35
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Hansen IS, Krabbendam L, Bernink JH, Loayza-Puch F, Hoepel W, van Burgsteden JA, Kuijper EC, Buskens CJ, Bemelman WA, Zaat SAJ, Agami R, Vidarsson G, van den Brink GR, de Jong EC, Wildenberg ME, Baeten DLP, Everts B, den Dunnen J. FcαRI co-stimulation converts human intestinal CD103 + dendritic cells into pro-inflammatory cells through glycolytic reprogramming. Nat Commun 2018; 9:863. [PMID: 29491406 PMCID: PMC5830413 DOI: 10.1038/s41467-018-03318-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 02/06/2018] [Indexed: 02/06/2023] Open
Abstract
CD103+ dendritic cells (DC) are crucial for regulation of intestinal tolerance in humans. However, upon infection of the lamina propria this tolerogenic response is converted to an inflammatory response. Here we show that immunoglobulin A (IgA) immune complexes (IgA-IC), which are present after bacterial infection of the lamina propria, are important for the induction of inflammation by the human CD103+SIRPα+ DC subset. IgA-IC, by recognition through FcαRI, selectively amplify the production of proinflammatory cytokines TNF, IL-1β and IL-23 by human CD103+ DCs. These cells then enhance inflammation by promoting Th17 responses and activating human intestinal innate lymphoid cells 3. Moreover, FcαRI-induced cytokine production is orchestrated via upregulation of cytokine translation and caspase-1 activation, which is dependent on glycolytic reprogramming mediated by kinases Syk, PI3K and TBK1-IKKε. Our data suggest that the formation of IgA-IC in the human intestine provides an environmental cue for the conversion of a tolerogenic to an inflammatory response.
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Affiliation(s)
- Ivo S Hansen
- Amsterdam Rheumatology and Immunology Centre, Department of Clinical Immunology and Rheumatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Lisette Krabbendam
- Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Jochem H Bernink
- Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Fabricio Loayza-Puch
- Division of Oncogenomics, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Willianne Hoepel
- Amsterdam Rheumatology and Immunology Centre, Department of Clinical Immunology and Rheumatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Johan A van Burgsteden
- Amsterdam Rheumatology and Immunology Centre, Department of Clinical Immunology and Rheumatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Elsa C Kuijper
- Department of Parasitology, Leiden University Medical Centre, University of Leiden, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Christianne J Buskens
- Department of Surgery, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Willem A Bemelman
- Department of Surgery, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Sebastiaan A J Zaat
- Department of Medical Microbiology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Reuven Agami
- Division of Oncogenomics, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
| | - Gestur Vidarsson
- Department of Experimental Immunohematology, Sanquin Research, University of Amsterdam, Plesmanlaan 125, 1066 CX, Amsterdam, The Netherlands
| | - Gijs R van den Brink
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Esther C de Jong
- Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Manon E Wildenberg
- Tytgat Institute for Liver and Intestinal Research and Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Dominique L P Baeten
- Amsterdam Rheumatology and Immunology Centre, Department of Clinical Immunology and Rheumatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Bart Everts
- Department of Parasitology, Leiden University Medical Centre, University of Leiden, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Jeroen den Dunnen
- Amsterdam Rheumatology and Immunology Centre, Department of Clinical Immunology and Rheumatology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. .,Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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36
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Hansen IS, Hoepel W, Zaat SAJ, Baeten DLP, den Dunnen J. Serum IgA Immune Complexes Promote Proinflammatory Cytokine Production by Human Macrophages, Monocytes, and Kupffer Cells through FcαRI-TLR Cross-Talk. THE JOURNAL OF IMMUNOLOGY 2017; 199:4124-4131. [PMID: 29118246 DOI: 10.4049/jimmunol.1700883] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 10/13/2017] [Indexed: 12/18/2022]
Abstract
IgA is predominantly recognized to play an important role in host defense at mucosal sites, where it prevents invasion of pathogens by neutralization. Although it has recently become clear that IgA also mediates other immunological processes, little remains known about the potential of IgA to actively contribute to induction of inflammation, particularly in nonmucosal organs and tissues. In this article, we provide evidence that immune complex formation of serum IgA plays an important role in orchestration of inflammation in response to pathogens at various nonmucosal sites by eliciting proinflammatory cytokines by human macrophages, monocytes, and Kupffer cells. We show that opsonization of bacteria with serum IgA induced cross-talk between FcαRI and different TLRs, leading to cell type-specific amplification of proinflammatory cytokines, such as TNF-α, IL-1β, IL-6, and IL-23. Furthermore, we demonstrate that the increased protein production of cytokines was regulated at the level of gene transcription, which was dependent on activation of kinases Syk and PI3K. Taken together, these data demonstrate that the immunological function of IgA is substantially more extensive than previously considered and suggest that serum IgA-induced inflammation plays an important role in orchestrating host defense by different cell types in nonmucosal tissues, including the liver, skin, and peripheral blood.
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Affiliation(s)
- Ivo S Hansen
- Amsterdam Rheumatology and Immunology Center, Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands.,Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands; and
| | - Willianne Hoepel
- Amsterdam Rheumatology and Immunology Center, Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands.,Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands; and
| | - Sebastiaan A J Zaat
- Department of Medical Microbiology, Amsterdam Infection and Immunity Institute, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands
| | - Dominique L P Baeten
- Amsterdam Rheumatology and Immunology Center, Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands.,Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands; and
| | - Jeroen den Dunnen
- Amsterdam Rheumatology and Immunology Center, Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands; .,Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands; and
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37
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Kot A, Zhong ZA, Zhang H, Lay YAE, Lane NE, Yao W. Sex dimorphic regulation of osteoprogenitor progesterone in bone stromal cells. J Mol Endocrinol 2017; 59:351-363. [PMID: 28871061 PMCID: PMC5633481 DOI: 10.1530/jme-17-0076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 09/04/2017] [Indexed: 12/13/2022]
Abstract
Increasing peak bone mass is a promising strategy to prevent osteoporosis. A mouse model of global progesterone receptor (PR) ablation showed increased bone mass through a sex-dependent mechanism. Cre-Lox recombination was used to generate a mouse model of osteoprogenitor-specific PR inactivation, which recapitulated the high bone mass phenotype seen in the PR global knockout mouse mode. In this work, we employed RNA sequencing analysis to evaluate sex-independent and sex-dependent differences in gene transcription of osteoprogenitors of wild-type and PR conditional knockout mice. PR deletion caused marked sex hormone-dependent changes in gene transcription in male mice as compared to wild-type controls. These transcriptional differences revealed dysregulation in pathways involving immunomodulation, osteoclasts, bone anabolism, extracellular matrix interaction and matrix interaction. These results identified many potential mechanisms that may explain our observed high bone mass phenotype with sex differences when PR was selectively deleted in the MSCs.
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Affiliation(s)
- Alexander Kot
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
| | - Zhendong A Zhong
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
- Center for Cancer and Cell BiologyProgram in Skeletal Disease and Tumor Microenvironment, Van Andel Research Institute, Grand Rapids, Michigan, USA
| | - Hongliang Zhang
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
- Department of Emergency MedicineCenter for Difficult Diagnoses and Rare Diseases, Second Xiangya Hospital of the Central-South University, Changsha, Hunan, China
| | - Yu-An Evan Lay
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
| | - Nancy E Lane
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
| | - Wei Yao
- Center for Musculoskeletal HealthDepartment of Internal Medicine, University of California Davis Medical Center, Sacramento, California, USA
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38
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O'Brien W, Fissel BM, Maeda Y, Yan J, Ge X, Gravallese EM, Aliprantis AO, Charles JF. RANK-Independent Osteoclast Formation and Bone Erosion in Inflammatory Arthritis. Arthritis Rheumatol 2017; 68:2889-2900. [PMID: 27563728 DOI: 10.1002/art.39837] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 08/02/2016] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Proinflammatory molecules promote osteoclast-mediated bone erosion by up-regulating local RANKL production. However, recent evidence suggests that combinations of cytokines, such as tumor necrosis factor (TNF) plus interleukin-6 (IL-6), induce RANKL-independent osteoclastogenesis. The purpose of this study was to better understand TNF/IL-6-induced osteoclast formation and to determine whether RANK is absolutely required for osteoclastogenesis and bone erosion in murine inflammatory arthritis. METHODS Myeloid precursors from wild-type (WT) mice or mice with either germline or conditional deletion of Rank, Nfatc1, Dap12, or Fcrg were treated with either RANKL or TNF plus IL-6. Osteoprotegerin, anti-IL-6 receptor (anti-IL-6R), and hydroxyurea were used to block RANKL, the IL-6R, and cell proliferation, respectively. Clinical scoring, histologic assessment, micro-computed tomography, and quantitative polymerase chain reaction (qPCR) were used to evaluate K/BxN serum-transfer arthritis in WT and RANK-deleted mice. Loss of Rank was verified by qPCR and by osteoclast cultures. RESULTS TNF/IL-6 generated osteoclasts in vitro that resorbed mineralized tissue through a pathway dependent on IL-6R, NFATc1, DNAX-activation protein 12, and cell proliferation, but independent of RANKL or RANK. Bone erosion and osteoclast formation were reduced, but not absent, in arthritic mice with inducible deficiency of RANK. TNF/IL-6, but not RANKL, induced osteoclast formation in bone marrow and synovial cultures from animals deficient in Rank. Multiple IL-6 family members (IL-6, leukemia inhibitory factor, oncostatin M) were up-regulated in the synovium of arthritic mice. CONCLUSION The persistence of bone erosion and synovial osteoclasts in Rank-deficient mice, and the ability of TNF/IL-6 to induce osteoclastogenesis, suggest that more than one cytokine pathway exists to generate these bone-resorbing cells in inflamed joints.
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Affiliation(s)
- William O'Brien
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Brian M Fissel
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Yukiko Maeda
- University of Massachusetts Medical School, Worcester
| | - Jing Yan
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Xianpeng Ge
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | | | | | - Julia F Charles
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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39
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Zhong L, Zhang ZL, Li X, Liao C, Mou P, Wang T, Wang Z, Wang Z, Wei M, Xu H, Bu G, Chen XF. TREM2/DAP12 Complex Regulates Inflammatory Responses in Microglia via the JNK Signaling Pathway. Front Aging Neurosci 2017; 9:204. [PMID: 28680398 PMCID: PMC5478682 DOI: 10.3389/fnagi.2017.00204] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/06/2017] [Indexed: 12/26/2022] Open
Abstract
DNAX-activating protein of 12 kDa (DAP12) is a signaling adapter protein expressed in cells that participate in innate immune responses. By pairing with different triggering receptors expressed on myeloid cell (TREM) proteins, DAP12 can mediate both positive and negative cellular responses. In particular, TREM1 acts as an amplifier of the immune response, while TREM2 functions as a negative regulator. TREM2 has also been shown to stimulate the phagocytosis of apoptotic neurons and define the barrier function in microglia. Notably, loss-of-function mutations of either DAP12 or TREM2 result in a disorder known as Nasu-Hakola disease (NHD); and mutations of these genes have been associated with the risk for Alzheimer's disease (AD), suggesting that TREM2 and DAP12 may regulate common signaling pathways in the disease pathogenesis. In this study, we demonstrated an anti-inflammatory role of DAP12 in murine microglia that depends on the presence of TREM2. We also uncovered the JNK signaling pathway as the underlying molecular mechanism by which the TREM2/DAP12 complex suppresses the hyperactivation of microglia upon LPS stimulation. Interestingly, LPS down-regulates the expression of Trem2 via the activation of JNK and NF-κB signaling pathways, resulting in a vicious cycle that synergistically promotes the inflammatory responses. Our study provides insights into mechanism-based therapy for neuroinflammatory disorders.
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Affiliation(s)
- Li Zhong
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Zhen-Lian Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Xinxiu Li
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Chunyan Liao
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Pengfei Mou
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Tingting Wang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Zongqi Wang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Zhe Wang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Min Wei
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China
| | - Huaxi Xu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China.,Neuroscience and Aging Research Center, Sanford-Burnham-Prebys Medical Discovery InstituteLa Jolla, CA, United States
| | - Guojun Bu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China.,Department of Neuroscience, Mayo ClinicJacksonville, FL, United States
| | - Xiao-Fen Chen
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, Medical College, Xiamen UniversityXiamen, China.,Shenzhen Research Institute of Xiamen UniversityShenzhen, China
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40
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Yue X, Ai J, Xu Y, Chen Y, Huang M, Yang X, Hu B, Zhang H, He C, Yang X, Tang W, Peng X, Dong L, Wang H, Fan J, Ding J, Geng M. Polymeric immunoglobulin receptor promotes tumor growth in hepatocellular carcinoma. Hepatology 2017; 65:1948-1962. [PMID: 28073159 DOI: 10.1002/hep.29036] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 11/23/2016] [Accepted: 12/26/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED Deregulation of the immune system is believed to contribute to cancer malignancy, which has led to recent therapeutic breakthroughs facilitating antitumor immunity. In a malignant setting, immunoglobulin receptors, which are fundamental components of the human immune system, fulfill paradoxical roles in cancer pathogenesis. This study describes a previously unrecognized pro-oncogenic function of polymeric immunoglobulin receptor (pIgR) in the promotion of cell transformation and proliferation. Mechanistically, pIgR overexpression is associated with YES proto-oncogene 1, Src family tyrosine kinase (Yes) activation, which is required for pIgR-induced oncogenic growth. Specifically, pIgR activates the Yes-DNAX-activating protein of 12 kDa-spleen tyrosine kinase-Rac1/CDC42-MEK (extracellular signal-regulated kinase kinase)/ERK (extracellular signal-regulated kinase) cascade in an immunoreceptor tyrosine-based activating motif (ITAM)-dependent manner to promote cell transformation and tumor growth, although pIgR itself does not contain an ITAM sequence. Additionally, the combination of pIgR and phosphorylated Yes (p-Yes) levels serves as a prognostic biomarker for hepatitis B surface antigen-positive and early-stage hepatocellular carcinoma (HCC) patients. Moreover, pharmacological targeting of MEK/ERK or Yes represents a therapeutic option for the subgroup of patients with pIgR/p-Yes-positive HCC based on our results with both cancer cell-line-based xenografts and primary patient-derived xenografts. CONCLUSION Our findings reveal the molecular mechanism by which pIgR promotes cancer malignancy, suggest the clinical potential of targeting this pathway in HCC, and provide new insight into the oncogenic role of immunoglobulin receptors. (Hepatology 2017;65:1948-1962).
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Affiliation(s)
- Xihua Yue
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Jing Ai
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Yang Xu
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, P.R. China
| | - Yi Chen
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Min Huang
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Xinying Yang
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Bo Hu
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, P.R. China
| | - Haotian Zhang
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Changxi He
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Xinrong Yang
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, P.R. China
| | - Weiguo Tang
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, P.R. China
| | - Xia Peng
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Liwei Dong
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, the Second Military Medical University, Shanghai, P.R. China
| | - Hongyang Wang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, the Second Military Medical University, Shanghai, P.R. China
| | - Jia Fan
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, P.R. China.,Institute of Biomedical Sciences, Fudan University, Shanghai, P.R. China
| | - Jian Ding
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Meiyu Geng
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
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Chiu YH, Schwarz E, Li D, Xu Y, Sheu TR, Li J, de Mesy Bentley KL, Feng C, Wang B, Wang JC, Albertorio-Saez L, Wood R, Kim M, Wang W, Ritchlin CT. Dendritic Cell-Specific Transmembrane Protein (DC-STAMP) Regulates Osteoclast Differentiation via the Ca 2+ /NFATc1 Axis. J Cell Physiol 2017; 232:2538-2549. [PMID: 27723141 DOI: 10.1002/jcp.25638] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 10/07/2016] [Indexed: 12/16/2022]
Abstract
DC-STAMP is a multi-pass transmembrane protein essential for cell-cell fusion between osteoclast precursors during osteoclast (OC) development. DC-STAMP-/- mice have mild osteopetrosis and form mononuclear cells with limited resorption capacity. The identification of an Immunoreceptor Tyrosine-based Inhibitory Motif (ITIM) on the cytoplasmic tail of DC-STAMP suggested a potential signaling function. The absence of a known DC-STAMP ligand, however, has hindered the elucidation of downstream signaling pathways. To address this problem, we engineered a light-activatable DC-STAMP chimeric molecule in which light exposure mimics ligand engagement that can be traced by downstream Ca2+ signaling. Deletion of the cytoplasmic ITIM resulted in a significant elevation in the amplitude and duration of intracellular Ca2+ flux. Decreased NFATc1 expression in DC-STAMP-/- cells was restored by DC-STAMP over-expression. Multiple biological phenotypes including cell-cell fusion, bone erosion, cell mobility, DC-STAMP cell surface distribution, and NFATc1 nuclear translocation were altered by deletion of the ITIM and adjacent amino acids. In contrast, mutations on each of the tyrosine residues surrounding the ITIM showed no effect on DC-STAMP function. Collectively, our results suggest that the ITIM on DC-STAMP is a functional motif that regulates osteoclast differentiation through the NFATc1/Ca2+ axis. J. Cell. Physiol. 232: 2538-2549, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ya-Hui Chiu
- Division of Allergy/Immunology and Rheumatology, The University of Rochester, Rochester, New York
| | - Edward Schwarz
- The Center for Musculoskeletal Research, The University of Rochester, Rochester, New York
| | - Dongge Li
- Division of Allergy/Immunology and Rheumatology, The University of Rochester, Rochester, New York
| | - Yuexin Xu
- Microbiology and Immunology, The University of Rochester, Rochester, New York
| | - Tzong-Ren Sheu
- The Center for Musculoskeletal Research, The University of Rochester, Rochester, New York
| | - Jinbo Li
- Pathology and Laboratory Medicine, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - Karen L de Mesy Bentley
- Microbiology and Immunology, The University of Rochester, Rochester, New York.,Pathology and Laboratory Medicine, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - Changyong Feng
- Biostatistic, The University of Rochester, Rochester, New York
| | - Baoli Wang
- Hormones and Development, Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Jhih-Cheng Wang
- Institution of Biomedical Engineering, National Cheng Kung University, Tainan City, Taiwan
| | - Liz Albertorio-Saez
- Division of Allergy/Immunology and Rheumatology, The University of Rochester, Rochester, New York
| | - Ronald Wood
- OB/GYN, Urology, Neuroscience, The University of Rochester, Rochester, New York
| | - Minsoo Kim
- Microbiology and Immunology, The University of Rochester, Rochester, New York
| | - Wensheng Wang
- 1st Affiliated Hospital, Xinxiang Medical University, Weihui City, Henan Province, China
| | - Christopher T Ritchlin
- Division of Allergy/Immunology and Rheumatology, The University of Rochester, Rochester, New York
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42
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Mohr S, Doebele C, Comoglio F, Berg T, Beck J, Bohnenberger H, Alexe G, Corso J, Ströbel P, Wachter A, Beissbarth T, Schnütgen F, Cremer A, Haetscher N, Göllner S, Rouhi A, Palmqvist L, Rieger MA, Schroeder T, Bönig H, Müller-Tidow C, Kuchenbauer F, Schütz E, Green AR, Urlaub H, Stegmaier K, Humphries RK, Serve H, Oellerich T. Hoxa9 and Meis1 Cooperatively Induce Addiction to Syk Signaling by Suppressing miR-146a in Acute Myeloid Leukemia. Cancer Cell 2017; 31:549-562.e11. [PMID: 28399410 PMCID: PMC5389883 DOI: 10.1016/j.ccell.2017.03.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 01/09/2017] [Accepted: 03/03/2017] [Indexed: 01/02/2023]
Abstract
The transcription factor Meis1 drives myeloid leukemogenesis in the context of Hox gene overexpression but is currently considered undruggable. We therefore investigated whether myeloid progenitor cells transformed by Hoxa9 and Meis1 become addicted to targetable signaling pathways. A comprehensive (phospho)proteomic analysis revealed that Meis1 increased Syk protein expression and activity. Syk upregulation occurs through a Meis1-dependent feedback loop. By dissecting this loop, we show that Syk is a direct target of miR-146a, whose expression is indirectly regulated by Meis1 through the transcription factor PU.1. In the context of Hoxa9 overexpression, Syk signaling induces Meis1, recapitulating several leukemogenic features of Hoxa9/Meis1-driven leukemia. Finally, Syk inhibition disrupts the identified regulatory loop, prolonging survival of mice with Hoxa9/Meis1-driven leukemia.
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Affiliation(s)
- Sebastian Mohr
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Carmen Doebele
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Federico Comoglio
- Department of Haematology, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK; Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute, Cambridge CB2 0XY, UK
| | - Tobias Berg
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; German Cancer Research Center and German Cancer Consortium, 69120 Heidelberg, Germany
| | - Julia Beck
- Chronix Biomedical, Goetheallee 8, 37073 Göttingen, Germany
| | - Hanibal Bohnenberger
- Institute of Pathology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37073 Göttingen, Germany
| | - Gabriela Alexe
- Department of Pediatric Oncology, Dana-Farber Cancer Institute and Boston Children's Hospital, Boston, MA 02115, USA; Broad Institute, Cambridge, MA 02142, USA
| | - Jasmin Corso
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen, Robert-Koch-Straße 40, 37073 Göttingen, Germany
| | - Astrid Wachter
- Institute of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, 37073 Göttingen, Germany
| | - Tim Beissbarth
- Institute of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, 37073 Göttingen, Germany
| | - Frank Schnütgen
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Anjali Cremer
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Nadine Haetscher
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Stefanie Göllner
- Department of Hematology and Oncology, University of Halle, Ernst-Grube-Street 40, 06120 Halle, Germany
| | - Arefeh Rouhi
- Department of Internal Medicine III, University Hospital of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Lars Palmqvist
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Su sahlgrenska, 41345 Gothenburg, Sweden
| | - Michael A Rieger
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; German Cancer Research Center and German Cancer Consortium, 69120 Heidelberg, Germany
| | - Timm Schroeder
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland
| | - Halvard Bönig
- Institute for Transfusion Medicine and Immunohematology, Goethe University, Sandhofstraße 1, 60590 Frankfurt, Germany
| | - Carsten Müller-Tidow
- Department of Hematology and Oncology, University of Halle, Ernst-Grube-Street 40, 06120 Halle, Germany
| | - Florian Kuchenbauer
- Department of Internal Medicine III, University Hospital of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | | | - Anthony R Green
- Department of Haematology, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK; Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute, Cambridge CB2 0XY, UK
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany; Bioanalytics, Georg August University, Robert-Koch-Straße 40, 37073 Göttingen, Germany
| | - Kimberly Stegmaier
- Department of Pediatric Oncology, Dana-Farber Cancer Institute and Boston Children's Hospital, Boston, MA 02115, USA; Broad Institute, Cambridge, MA 02142, USA
| | - R Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada; Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9, Canada
| | - Hubert Serve
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; German Cancer Research Center and German Cancer Consortium, 69120 Heidelberg, Germany
| | - Thomas Oellerich
- Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany; Department of Haematology, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK; Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute, Cambridge CB2 0XY, UK; German Cancer Research Center and German Cancer Consortium, 69120 Heidelberg, Germany.
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43
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Binder N, Miller C, Yoshida M, Inoue K, Nakano S, Hu X, Ivashkiv LB, Schett G, Pernis A, Goldring SR, Ross FP, Zhao B. Def6 Restrains Osteoclastogenesis and Inflammatory Bone Resorption. THE JOURNAL OF IMMUNOLOGY 2017; 198:3436-3447. [PMID: 28314855 DOI: 10.4049/jimmunol.1601716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 02/19/2017] [Indexed: 01/08/2023]
Abstract
Inflammatory bone resorption mediated by osteoclasts is a major cause of morbidity and disability in many inflammatory disorders, including rheumatoid arthritis (RA). The mechanisms that regulate osteoclastogenesis and bone resorption in inflammatory settings are complex and have not been well elucidated. In this study, we identify the immunoregulator differentially expressed in FDCP 6 homolog (Def6) as a novel inhibitor of osteoclastogenesis in physiological and inflammatory conditions. Def6 deficiency in Def6-/- mice enhanced the sensitivity of osteoclast precursors to the physiological osteoclastogenic inducer receptor activator for NF-κB ligand, and Def6-/- osteoclasts formed actin rings. Furthermore, Def6 deficiency markedly increased TNF-α-induced osteoclastogenesis in vitro and in vivo and enhanced bone resorption in an inflammatory osteolysis mouse model. TNF-α serum levels correlated negatively with Def6 expression levels in osteoclast precursors obtained from RA patients, and the osteoclastogenic capacity of the osteoclast precursors was significantly inversely correlated with their Def6 expression levels, indicating that Def6 functions as an inhibitor of excessive osteoclast formation and bone destruction in RA. Mechanistically, Def6 suppressed osteoclastogenesis and the expression of key osteoclastogenic factors NFATc1, B lymphocyte-induced maturation protein-1, and c-Fos by regulating an endogenous IFN-β-mediated autocrine feedback loop. The Def6-dependent pathway may represent a novel therapeutic target to prevent pathological bone destruction.
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Affiliation(s)
- Nikolaus Binder
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Christine Miller
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Masaki Yoshida
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Kazuki Inoue
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Shinichi Nakano
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Xiaoyu Hu
- Institute for Immunology, Tsinghua University, Beijing 100084, China.,School of Medicine, Tsinghua University, Beijing 100084, China
| | - Lionel B Ivashkiv
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021.,Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY 10021
| | - Georg Schett
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen 91054, Germany
| | - Alessandra Pernis
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021.,Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY 10021.,Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, NY 10021; and
| | - Steven R Goldring
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - F Patrick Ross
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Baohong Zhao
- Arthritis and Tissue Degeneration Program and The David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021; .,Department of Medicine, Weill Cornell Medical College, New York, NY 10021
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44
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Humphrey MB, Nakamura MC. A Comprehensive Review of Immunoreceptor Regulation of Osteoclasts. Clin Rev Allergy Immunol 2017; 51:48-58. [PMID: 26573914 DOI: 10.1007/s12016-015-8521-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Osteoclasts require coordinated co-stimulation by several signaling pathways to initiate and regulate their cellular differentiation. Receptor activator for NF-κB ligand (RANKL or TNFSF11), a tumor necrosis factor (TNF) superfamily member, is the master cytokine required for osteoclastogenesis with essential co-stimulatory signals mediated by immunoreceptor tyrosine-based activation motif (ITAM)-signaling adaptors, DNAX-associated protein 12 kDa size (DAP12) and FcεRI gamma chain (FcRγ). The ITAM-signaling adaptors do not have an extracellular ligand-binding domain and, therefore, must pair with ligand-binding immunoreceptors to interact with their extracellular environment. DAP12 pairs with a number of different immunoreceptors including triggering receptor expressed on myeloid cells 2 (TREM2), myeloid DAP12-associated lectin (MDL-1), and sialic acid-binding immunoglobulin-type lectin 15 (Siglec-15); while FcRγ pairs with a different set of receptors including osteoclast-specific activating receptor (OSCAR), paired immunoglobulin receptor A (PIR-A), and Fc receptors. The ligands for many of these receptors in the bone microenvironment remain unknown. Here, we will review immunoreceptors known to pair with either DAP12 or FcRγ that have been shown to regulate osteoclastogenesis. Co-stimulation and the effects of ITAM-signaling have turned out to be complex, and now include paradoxical findings that ITAM-signaling adaptor-associated receptors can inhibit osteoclastogenesis and immunoreceptor tyrosine-based inhibitory motif (ITIM) receptors can promote osteoclastogenesis. Thus, co-stimulation of osteoclastogenesis continues to reveal additional complexities that are important in the regulatory mechanisms that seek to maintain bone homeostasis.
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Affiliation(s)
- Mary Beth Humphrey
- Division of Rheumatology, Immunology, and Allergy, Department of Medicine, University of Oklahoma Health Sciences Center, 975 NE 10th St., BRC209, Oklahoma City, OK, 73104, USA
| | - Mary C Nakamura
- Division of Rheumatology, Department of Medicine, University of California, San Francisco, CA, USA. .,Arthritis/Immunology Section, San Francisco Veterans Administration Medical Center, 4150 Clement St 111R, San Francisco, CA, 94121, USA.
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45
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Chiu YG, Ritchlin CT. Denosumab: targeting the RANKL pathway to treat rheumatoid arthritis. Expert Opin Biol Ther 2017; 17:119-128. [PMID: 27871200 PMCID: PMC5794005 DOI: 10.1080/14712598.2017.1263614] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/18/2016] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a chronic inflammatory disorder characterized by focal pathologic bone resorption due to excessive activity of osteoclasts (OC). Receptor activator of nuclear factor kappa B ligand (RANKL) is essential for the proliferation, differentiation, and survival of OC. Denosumab (DMab) is a humanized monoclonal antibody that binds to RANKL with high affinity and blocks its subsequent association with its receptor RANK on the surface of OC precursors. Area covered: The authors review the molecular and cellular mechanisms underlying therapeutic applications of DMab, provide recent highlights on pharmacology, efficacy and safety of DMab, and discuss the potential of DMab as a novel therapeutic option for the treatment of rheumatoid arthritis. Expert opinion: Clinical results suggest that DMab is efficient both in systemic and articular bone loss in RA with limited side effects. Diminished bone erosion activity was also noted in RA patients on corticosteroids and bisphosphonates. Combination of DMab with an anti-TNF agent was not associated with increased infection rates. Collectively, these data indicate that DMab, in combination with methotrexate and possibly other conventional synthetic Disease Modifying Anti-Rheumatic Drugs (csDMARDs), is an effective, safe and cost-effective option for the treatment of RA.
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Affiliation(s)
- Yahui Grace Chiu
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester, Box 695, Room G6456, Rochester, NY 14642
| | - Christopher T. Ritchlin
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester, Box 695, Room G6456, Rochester, NY 14642
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46
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Shah S, Gibson AW, Ji C, Darrington E, Mobley J, Kojima K, Edberg JC, Kimberly RP. Regulation of FcRγ function by site-specific serine phosphorylation. J Leukoc Biol 2016; 101:421-428. [PMID: 27630214 DOI: 10.1189/jlb.2ab0516-228r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/03/2016] [Accepted: 08/25/2016] [Indexed: 01/01/2023] Open
Abstract
The common FcRγ, an immunoreceptor tyrosine-based activation motif (ITAM)- containing adaptor protein, associates with multiple leukocyte receptor complexes and mediates signal transduction through the ITAM in the cytoplasmic domain. The presence of multiple serine and threonine residues within this motif suggests the potential for serine/threonine phosphorylation in modulating signaling events. Single-site mutational analysis of these residues in RBL-2H3 cells indicates that each may contribute to net FcRγ-mediated signaling, and mass spectrometry of WT human FcRγ from receptor-stimulated cells shows consistent preferential phosphorylation of the serine residue at position 51. Immunoblot analysis, mass spectrometry, and mutational analyses showed that phosphorylation of serine 51 in the 7-residue spacer between the 2 YxxL sequences regulates FcRγ signaling by inhibiting tyrosine phosphorylation at the membrane proximal Y47 position of the ITAM, but not phosphorylation at position Y58. This inhibition results in reduced Syk recruitment and activation. With in vitro kinase assays, PKC-δ and PKA show preferential phosphorylation of S51. Serine/threonine phosphorylation of the FcRγ ITAM, which functions as an integrator of multiple signaling elements, may explain in part the contribution of variants in PKC-δ and other PKC isoforms to some autoimmune phenotypes.
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Affiliation(s)
- Spandan Shah
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Andrew W Gibson
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Chuanyi Ji
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Eric Darrington
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - James Mobley
- Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kyoko Kojima
- Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jeffrey C Edberg
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Robert P Kimberly
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
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Pivetta E, Wassermann B, Bulian P, Steffan A, Colombatti A, Polesel J, Spessotto P. Functional osteoclastogenesis: the baseline variability in blood donor precursors is not associated with age and gender. Oncotarget 2016; 6:31889-900. [PMID: 26376614 PMCID: PMC4741648 DOI: 10.18632/oncotarget.5575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 08/15/2015] [Indexed: 02/06/2023] Open
Abstract
Mononuclear osteoclast precursors circulate in the monocyte fraction of peripheral blood and form multinuclear cells with all osteoclastic phenotypic characteristics when cultured in the presence of macrophage colony stimulating factor (M-CSF) and receptor activator of nuclear factor kB ligand (RANKL). The method to obtain osteoclast precursors from peripheral blood is simple but the number of recovered osteoclasts is often largely insufficient for functional analyses. The original aim of this study was to develop a rapid and efficient method that could overcome the donor variability and enrich the osteoclast precursors from a small volume of peripheral blood as a basis for future clinical studies to correlate the differentiation potential of circulating osteoclast precursors with bone lesions in cancer patients. We improved the efficiency of osteoclastogenesis by reducing isolation and purification times and overcame the use of flow cytometry and immunomagnetic purification procedures. In our culture system the osteoclast number was increased several-fold and the precursors were able to reach a full differentiation within seven days of culture. Both age as well as gender differences in osteoclastogenesis efficiency were no longer evident by processing limited volume blood samples with this simple and rapid method.
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Affiliation(s)
- Eliana Pivetta
- Division of Experimental Oncology 2, Department of Translational Research, CRO-IRCCS, Aviano, Pordenone, Italy
| | - Bruna Wassermann
- Division of Experimental Oncology 2, Department of Translational Research, CRO-IRCCS, Aviano, Pordenone, Italy
| | - Pietro Bulian
- Clinical and Experimental Onco-Hematology Unit, CRO-IRCCS, Aviano, Pordenone, Italy
| | | | - Alfonso Colombatti
- Division of Experimental Oncology 2, Department of Translational Research, CRO-IRCCS, Aviano, Pordenone, Italy
| | - Jerry Polesel
- Unit of Epidemiology and Biostatistics, CRO-IRCSS, Aviano, Pordenone, Italy
| | - Paola Spessotto
- Division of Experimental Oncology 2, Department of Translational Research, CRO-IRCCS, Aviano, Pordenone, Italy
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Chiu YH, Ritchlin CT. DC-STAMP: A Key Regulator in Osteoclast Differentiation. J Cell Physiol 2016; 231:2402-7. [PMID: 27018136 DOI: 10.1002/jcp.25389] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 01/09/2023]
Abstract
Osteoimmunology research is a new emerging research field that investigates the links between the bone and immune responses. Results from osteoimmunology studies suggest that bone is not only an essential component of the musculoskeletal system, but is also actively involved in immune regulation. Many important factors involved in immune regulation also participate in bone homeostasis. Bone homeostasis is achieved by a coordinated action between bone-synthesizing osteoblasts and bone-degrading osteoclasts. An imbalanced action between osteoblasts and osteoclasts often results in pathological bone diseases: osteoporosis is caused by an excessive osteoclast activity, whereas osteopetrosis results from an increased osteoblast activity. This review focuses on dendritic cell-specific transmembrane protein (DC-STAMP), an important protein currently considered as a master regulator of osteoclastogenesis. Of clinical relevance, the frequency of circulating DC-STAMP+ cells is elevated during the pathogenesis of psoriatic diseases. Intriguingly, recent results suggest that DC-STAMP also plays an imperative role in bone homeostasis by regulating the differentiation of both osteoclasts and osteoblasts. This article summarizes our current knowledge on DC-STAMP by focusing on its interacting proteins, its regulation on osteoclastogenesis-related genes, its possible involvement in immunoreceptor tyrosine-based inhibitory motif (ITIM)-mediated signaling cascade, and its potential of developing therapeutics for clinical applications. J. Cell. Physiol. 231: 2402-2407, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ya-Hui Chiu
- Division of Allergy, Immunology and Rheumatology, School of Medicine, University of Rochester, Rochester, New York
| | - Christopher T Ritchlin
- Division of Allergy, Immunology and Rheumatology, School of Medicine, University of Rochester, Rochester, New York
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Miller CH, Smith SM, Elguindy M, Zhang T, Xiang JZ, Hu X, Ivashkiv LB, Zhao B. RBP-J-Regulated miR-182 Promotes TNF-α-Induced Osteoclastogenesis. THE JOURNAL OF IMMUNOLOGY 2016; 196:4977-86. [PMID: 27183593 DOI: 10.4049/jimmunol.1502044] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 04/21/2016] [Indexed: 01/06/2023]
Abstract
Increased osteoclastogenesis is responsible for osteolysis, which is a severe consequence of inflammatory diseases associated with bone destruction, such as rheumatoid arthritis and periodontitis. The mechanisms that limit osteoclastogenesis under inflammatory conditions are largely unknown. We previously identified transcription factor RBP-J as a key negative regulator that restrains TNF-α-induced osteoclastogenesis and inflammatory bone resorption. In this study, we tested whether RBP-J suppresses inflammatory osteoclastogenesis by regulating the expression of microRNAs (miRNAs) important for this process. Using high-throughput sequencing of miRNAs, we obtained the first, to our knowledge, genome-wide profile of miRNA expression induced by TNF-α in mouse bone marrow-derived macrophages/osteoclast precursors during inflammatory osteoclastogenesis. Furthermore, we identified miR-182 as a novel miRNA that promotes inflammatory osteoclastogenesis driven by TNF-α and whose expression is suppressed by RBP-J. Downregulation of miR-182 dramatically suppressed the enhanced osteoclastogenesis program induced by TNF-α in RBP-J-deficient cells. Complementary loss- and gain-of-function approaches showed that miR-182 is a positive regulator of osteoclastogenic transcription factors NFATc1 and B lymphocyte-induced maturation protein-1. Moreover, we identified that direct miR-182 targets, Foxo3 and Maml1, play important inhibitory roles in TNF-α-mediated osteoclastogenesis. Thus, RBP-J-regulated miR-182 promotes TNF-α-induced osteoclastogenesis via inhibition of Foxo3 and Maml1. Suppression of miR-182 by RBP-J serves as an important mechanism that restrains TNF-α-induced osteoclastogenesis. Our results provide a novel miRNA-mediated mechanism by which RBP-J inhibits osteoclastogenesis and suggest that targeting of the newly described RBP-J-miR-182-Foxo3/Maml1 axis may represent an effective therapeutic approach to suppress inflammatory osteoclastogenesis and bone resorption.
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Affiliation(s)
- Christine H Miller
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Sinead M Smith
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Mahmoud Elguindy
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021
| | - Tuo Zhang
- Genomics Resources Core Facility, Weill Cornell Medical College, New York, NY 10065
| | - Jenny Z Xiang
- Genomics Resources Core Facility, Weill Cornell Medical College, New York, NY 10065
| | - Xiaoyu Hu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center for Biotherapy, Tsinghua University, Beijing 100084, China
| | - Lionel B Ivashkiv
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021; Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065; and
| | - Baohong Zhao
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021; Department of Medicine, Weill Cornell Medical College, New York, NY 10065
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50
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Wu Y, Lan C, Ren D, Chen GY. Induction of Siglec-1 by Endotoxin Tolerance Suppresses the Innate Immune Response by Promoting TGF-β1 Production. J Biol Chem 2016; 291:12370-82. [PMID: 27129263 DOI: 10.1074/jbc.m116.721258] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 12/22/2022] Open
Abstract
Sepsis is one of the leading causes of death worldwide. Although the prevailing theory for the sepsis syndrome is a condition of uncontrolled inflammation in response to infection, sepsis is increasingly being recognized as an immunosuppressive state known as endotoxin tolerance. We found sialylation of cell surface was significantly increased on LPS-induced tolerant cells; knockdown of Neu1 in macrophage cell line RAW 264.7 cells resulted in enhanced LPS-induced tolerance, whereas overexpression of Neu1 or treatment with sialidase abrogated LPS-induced tolerance, as defined by measuring TNF-α levels in the culture supernatants. We also found that the expression of Siglec-1 (a member of sialic acid-binding Ig (I)-like lectin family members, the predominant sialic acid-binding proteins on cell surface) was specifically up-regulated in endotoxin tolerant cells and the induction of Siglec-1 suppresses the innate immune response by promoting TGF-β1 production. The enhanced TGF-β1 production by Siglec-1 was significantly attenuated by spleen tyrosine kinase (Syk) inhibitor. Knockdown of siglec-1 in RAW 264.7 cells resulted in inhibiting the production of TGF-β1 by ubiquitin-dependent degradation of Syk. Mechanistically, Siglec-1 associates with adaptor protein DNAX-activation protein of 12 kDa (DAP12) and transduces a signal to Syk to control the production of TGF-β1 in endotoxin tolerance. Thus, Siglec-1 plays an important role in the development of endotoxin tolerance and targeted manipulation of this process could lead to a new therapeutic opportunity for patients with sepsis.
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Affiliation(s)
- Yin Wu
- From the Children's Foundation Research Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee 38103
| | - Chao Lan
- From the Children's Foundation Research Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee 38103
| | - Dongren Ren
- From the Children's Foundation Research Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee 38103
| | - Guo-Yun Chen
- From the Children's Foundation Research Institute, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee 38103
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