1
|
Voss OH, Moin I, Gaytan H, Ullah S, Sadik M, Azad AF, Rahman MS. Pathogenic rickettsiae utilize the phosphatidylserine binding receptor CD300f on macrophages for host invasion and pathogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.10.593542. [PMID: 38766217 PMCID: PMC11100818 DOI: 10.1101/2024.05.10.593542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Some arthropod-borne obligate intracellular rickettsiae are among the most virulent human pathogens. Upon entry, Rickettsia species modulate immune (e.g., macrophages; MΦ) and non-immune cell (e.g., endothelial cells) responses to create a habitable environment for host colonization. In particular, MΦ play a crucial role in either terminating an infection at an early stage or succumbing to bacterial replication and colonization. However, our understanding on how Rickettsia species modulate crucial cellular processes within MΦ, including phagocytosis, and host cell defenses, to establish an intracytosolic replication niche, remain poorly defined. In this study, we describe a previously unappreciated mechanism, in which pathogenic rickettsiae infection is mediated by the phosphatidylserine (PS)-binding receptor, CD300f. We found that CD300f -/- mice but not wild-type (WT) C57BL/6J mice were protected against R. typhi - or R. rickettsii [ Shelia Smith ]-induced fatal rickettsiosis. Adoptative transfer studies further revealed that CD300f-expressing bone marrow-derived macrophages (BMDMΦ) are important mediators to control rickettsiosis in WT mice. Mechanistical analysis, using WT or CD300f -/- BMDMΦ, showed that CD300f facilitates the engulfment of both pathogenic R. typhi and R. rickettsii species, likely via a PS-mediated mechanism. Furthermore, CD300f was involved in the intracytosolic replication of both pathogenic rickettsiae by differentially modulating the anti-inflammatory Interleukin (IL)-10 and anti-rickettsial IL-1α and IL-1β cytokine responses. Collectively, our findings describe a previously unappreciated role for the efferocytic receptor, CD300f, to facilitate engulfment and the intracellular survival of pathogenic rickettsiae within the host. Significance Statement Vector-borne diseases, which are transmitted by hematophagous arthropods, like ticks and fleas, present a perilous threat to public health. In fact, tick- and flea-borne rickettsial diseases are on the rise globally and our current inadequate understanding on how Rickettsia interacts with their mammalian host has significantly impaired the development of effective interventions against pathogenic rickettsial infections. Here, we identified the phosphatidylserine (PS)-receptor, CD300f, as an important mediator of pathogenic rickettsiae infection in vivo and in vitro . Specifically, we showed that CD300f-expressing macrophages facilitate rickettsial infection by differentially modulating anti-inflammatory Interleukin (IL)-10 and anti-rickettsial IL-1α and IL-1β cytokine responses. In sum, our data described CD300f as an important regulator of rickettsial infection and may present a target for therapeutic intervention.
Collapse
|
2
|
Donovan LJ, Bridges CM, Nippert AR, Wang M, Wu S, Forman TE, Haight ES, Huck NA, Bond SF, Jordan CE, Gardner AM, Nair RV, Tawfik VL. Repopulated spinal cord microglia exhibit a unique transcriptome and contribute to pain resolution. Cell Rep 2024; 43:113683. [PMID: 38261512 PMCID: PMC10947777 DOI: 10.1016/j.celrep.2024.113683] [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: 06/15/2023] [Revised: 11/15/2023] [Accepted: 01/02/2024] [Indexed: 01/25/2024] Open
Abstract
Microglia are implicated as primarily detrimental in pain models; however, they exist across a continuum of states that contribute to homeostasis or pathology depending on timing and context. To clarify the specific contribution of microglia to pain progression, we take advantage of a temporally controlled transgenic approach to transiently deplete microglia. Unexpectedly, we observe complete resolution of pain coinciding with microglial repopulation rather than depletion. We find that repopulated mouse spinal cord microglia are morphologically distinct from control microglia and exhibit a unique transcriptome. Repopulated microglia from males and females express overlapping networks of genes related to phagocytosis and response to stress. We intersect the identified mouse genes with a single-nuclei microglial dataset from human spinal cord to identify human-relevant genes that may ultimately promote pain resolution after injury. This work presents a comprehensive approach to gene discovery in pain and provides datasets for the development of future microglial-targeted therapeutics.
Collapse
Affiliation(s)
- Lauren J Donovan
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Caldwell M Bridges
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Amy R Nippert
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Meng Wang
- Stanford Center for Genomics and Personalized Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Shaogen Wu
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Thomas E Forman
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Elena S Haight
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Nolan A Huck
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Sabrina F Bond
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Claire E Jordan
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Aysha M Gardner
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA
| | - Ramesh V Nair
- Stanford Center for Genomics and Personalized Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Vivianne L Tawfik
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA 94305, USA.
| |
Collapse
|
3
|
Kong N, Guan H, Duan X, Cao R, Li H, Xing F, Du X, Zheng Y, Zhang L, Li Y, Liu Z, Tian R, Wang K, Che D, Yang P. Dehydroandrographolide alleviates rheumatoid arthritis by inhibiting neutrophil activation via LMIR3 in collagen induced arthritis rats. Cell Cycle 2024; 23:1-14. [PMID: 38234233 PMCID: PMC11005808 DOI: 10.1080/15384101.2024.2304508] [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: 12/27/2022] [Accepted: 01/07/2024] [Indexed: 01/19/2024] Open
Abstract
Rheumatoid arthritis (RA) is an inflammatory disease which causes severe pain and disability. Neutrophils play essential roles in the onset and progression of RA; thus, inhibition of neutrophil activation is becoming a popular therapeutic strategy. Dehydroandrographolide has provided satisfactory outcomes in inflammatory diseases; however, its therapeutic effects and mechanism in RA are not fully understood. Leukocyte mono-immunoglobulin-like receptor 3 (LMIR3) is a negative regulator highly expressed in neutrophils. To determine whether dehydroandrographolide negatively regulated neutrophils activation via LMIR3, cytokines release and collagen-induced arthritis (CIA) rats were used in vitro and in vivo. Biacore, molecular docking analysis and molecular dynamics simulation were performed to prove the target of dehydroandrographolide. Moreover, the downstream signaling pathways of LMIR3 activation were analyzed by western blotting. Results showed that oral dehydroandrographolide administration of 2 mg/kg/day to CIA rats attenuated synovitis and bone and cartilage damage after the 28-day intervention, revealed using HE sections and micro-CT. Dehydroandrographolide significantly inhibited cytokine release and chemotaxis of LPS/TNF-α-activated neutrophils in vitro. Dehydroandrographolide inhibited neutrophils activation via binding to LMIR3. Moreover, dehydroandrographolide up-regulated the phosphorylation of SHP-1 and SHP-2, which are the essential kinases in the LMIR3 signaling pathways. This study revealed that dehydroandrographolide attenuated collagen-induced arthritis by suppressing neutrophil activation via LMIR3.
Collapse
Affiliation(s)
- Ning Kong
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Huanshuai Guan
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Xudong Duan
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Ruomu Cao
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Heng Li
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Fangze Xing
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Xueshan Du
- Department of Dermatology, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Yi Zheng
- Department of Dermatology, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Lei Zhang
- Department of Pharmacy, Shaanxi Provincial Hospital of Traditional Chinese Medicine, Xi’an, China
| | - Yiyang Li
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Zeyu Liu
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Run Tian
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Kunzheng Wang
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Delu Che
- Department of Dermatology, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| | - Pei Yang
- Department of Bone and Joint Surgery, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, China
| |
Collapse
|
4
|
Schneider K, Arandjelovic S. Apoptotic cell clearance components in inflammatory arthritis. Immunol Rev 2023; 319:142-150. [PMID: 37507355 PMCID: PMC10615714 DOI: 10.1111/imr.13256] [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: 05/07/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease of the synovial joints that affects ~1% of the human population. Joint swelling and bone erosion, hallmarks of RA, contribute to disability and, sometimes, loss of life. Mechanistically, disease is driven by immune dysregulation characterized by circulating autoantibodies, inflammatory mediators, tissue degradative enzymes, and metabolic dysfunction of resident stromal and recruited immune cells. Cell death by apoptosis has been therapeutically explored in animal models of RA due to the comparisons drawn between synovial hyperplasia and paucity of apoptosis in RA with the malignant transformation of cancer cells. Several efforts to induce cell death have shown benefits in reducing the development and/or severity of the disease. Apoptotic cells are cleared by phagocytes in a process known as efferocytosis, which differs from microbial phagocytosis in its "immuno-silent," or anti-inflammatory, nature. Failures in efferocytosis have been linked to autoimmune disease, whereas administration of apoptotic cells in RA models effectively inhibits inflammatory indices, likely though efferocytosis-mediated resolution-promoting mechanisms. However, the nature of signaling pathways elicited and the molecular identity of clearance mediators in RA are understudied. Furthermore, canonical efferocytosis machinery elements also play important non-canonical functions in homeostasis and pathology. Here, we discuss the roles of efferocytosis machinery components in models of RA and discuss their potential involvement in disease pathophysiology.
Collapse
Affiliation(s)
- Kevin Schneider
- University of Virginia, Center for Immunity, Inflammation and Regenerative Medicine, Department of Medicine, Charlottesville, VA, USA
| | - Sanja Arandjelovic
- University of Virginia, Center for Immunity, Inflammation and Regenerative Medicine, Department of Medicine, Charlottesville, VA, USA
| |
Collapse
|
5
|
Zhang SY, Xu QP, Shi LN, Li SW, Wang WH, Wang QQ, Lu LX, Xiao H, Wang JH, Li FY, Liang YM, Gong ST, Peng HR, Zhang Z, Tang H. Soluble CD4 effectively prevents excessive TLR activation of resident macrophages in the onset of sepsis. Signal Transduct Target Ther 2023; 8:236. [PMID: 37332010 DOI: 10.1038/s41392-023-01438-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 03/08/2023] [Accepted: 03/28/2023] [Indexed: 06/20/2023] Open
Abstract
T lymphopenia, occurring in the early phase of sepsis in response to systemic inflammation, is commonly associated with morbidity and mortality of septic infections. We have previously shown that a sufficient number of T cells is required to constrain Toll-like receptors (TLRs) mediated hyperinflammation. However, the underlying mechanisms remains unsolved. Herein, we unveil that CD4+ T cells engage with MHC II of macrophages to downregulate TLR pro-inflammatory signaling. We show further that the direct contact between CD4 molecule of CD4+ T cells or the ectodomain of CD4 (soluble CD4, sCD4), and MHC II of resident macrophages is necessary and sufficient to prevent TLR4 overactivation in LPS and cecal ligation puncture (CLP) sepsis. sCD4 serum concentrations increase after the onset of LPS sepsis, suggesting its compensatory inhibitive effects on hyperinflammation. sCD4 engagement enables the cytoplasmic domain of MHC II to recruit and activate STING and SHP2, which inhibits IRAK1/Erk and TRAF6/NF-κB activation required for TLR4 inflammation. Furthermore, sCD4 subverts pro-inflammatory plasma membrane anchorage of TLR4 by disruption of MHC II-TLR4 raft domains that promotes MHC II endocytosis. Finally, sCD4/MHCII reversal signaling specifically interferes with TLR4 but not TNFR hyperinflammation, and independent of the inhibitive signaling of CD40 ligand of CD4+ cells on macrophages. Therefore, a sufficient amount of soluble CD4 protein can prevent excessive inflammatory activation of macrophages via alternation of MHC II-TLR signaling complex, that might benefit for a new paradigm of preventive treatment of sepsis.
Collapse
Affiliation(s)
- Sheng-Yuan Zhang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China
- University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Qiu-Ping Xu
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Li-Na Shi
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
- University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Shih-Wen Li
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Wei-Hong Wang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Qing-Qing Wang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Liao-Xun Lu
- The Laboratory of Genetic Regulators in The Immune System, Xin-xiang Medical University, Xin-xiang, Henan Province, 453003, China
| | - Hui Xiao
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Jun-Hong Wang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Feng-Ying Li
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China
| | - Yin-Ming Liang
- The Laboratory of Genetic Regulators in The Immune System, Xin-xiang Medical University, Xin-xiang, Henan Province, 453003, China
| | - Si-Tang Gong
- The Joint Center of Translational Medicine, Guangzhou Women and Children's Medical Center and Institut Pasteur of Shanghai, Guangzhou, 510623, China
| | - Hao-Ran Peng
- Department of Microbiology, Naval Medical University, Shanghai, 200433, China.
| | - Zheng Zhang
- The Third People's Hospital of Shenzhen, Shenzhen, 518112, China.
| | - Hong Tang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 210031, China.
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| |
Collapse
|
6
|
Sutherland SIM, Ju X, Silveira PA, Kupresanin F, Horvath LG, Clark GJ. CD300f signalling induces inhibitory human monocytes/macrophages. Cell Immunol 2023; 390:104731. [PMID: 37302321 DOI: 10.1016/j.cellimm.2023.104731] [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: 12/18/2022] [Revised: 05/11/2023] [Accepted: 05/30/2023] [Indexed: 06/13/2023]
Abstract
The CD300 glycoproteins are a family of related leucocyte surface molecules that regulate the immune response via their paired triggering and inhibitory receptors. Here we studied CD300f, an apoptotic cell receptor, and how it modulates the function of human monocytes and macrophages. We showed that CD300f signalling by crosslinking with anti-CD300f mAb (DCR-2) suppressed monocytes causing upregulation of the inhibitory molecule, CD274 (PD-L1) and their inhibition of T cell proliferation. Furthermore, CD300f signalling drove macrophages preferentially towards M2-type with upregulation of CD274, which was further enhanced by IL-4. CD300f signalling activates the PI3K/Akt pathway in monocytes. Inhibition of PI3K/Akt signalling resulting from CD300f crosslinking leads to downregulation of CD274 expression on monocytes. These findings highlight the potential use of CD300f blockade in cancer immune therapy to target immune suppressive macrophages in the tumour microenvironment, a known resistance mechanism to PD-1/PD-L1 checkpoint inhibitors.
Collapse
Affiliation(s)
- Sarah I M Sutherland
- Dendritic Cell Research, ANZAC Research Institute, Sydney, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; Chris O'Brien Lifehouse, Sydney, NSW, Australia
| | - Xinsheng Ju
- Dendritic Cell Research, ANZAC Research Institute, Sydney, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Pablo A Silveira
- Dendritic Cell Research, ANZAC Research Institute, Sydney, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Fiona Kupresanin
- Dendritic Cell Research, ANZAC Research Institute, Sydney, NSW, Australia
| | - Lisa G Horvath
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; Chris O'Brien Lifehouse, Sydney, NSW, Australia; Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Georgina J Clark
- Dendritic Cell Research, ANZAC Research Institute, Sydney, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
| |
Collapse
|
7
|
Dang B, Hu S, Zhang Y, Huang Y, Zhang T, An H. Myricetin served as antagonist for negatively regulate MRGPRX2 mediated pseudo-allergic reactions through CD300f/SHP1/SHP2 phosphorylation. Int Immunopharmacol 2023; 118:110034. [PMID: 36958208 DOI: 10.1016/j.intimp.2023.110034] [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: 11/28/2022] [Revised: 03/04/2023] [Accepted: 03/10/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND Mas-related G protein-coupled receptor X2 (MRGPRX2) plays a vital role in mast cells (MCs) degranulation and pseudo-allergic reactions. Leukocyte mono-immunoglobulin-like receptor 3 (CD300f) can negatively regulate MCs degranulation. Identification of drug candidates which target CD300f represents a promising prospect in drug development. Myricetin is widely distributed in plants and has been reported to inhibit allergic reactions in OVA-induced murine models. OBJECTIVE This study aims to determine whether myricetin can activate CD300f to arrest MCs degranulation mediated by MRGPRX2. RESULTS Myricetin inhibited the allergic mediator and cytokine release triggered by MRGPRX2 in vivo and in vitro. Under C48/80 stimulation, the release of β-hexosaminidase, TNF-α, IL-8 and MCP-1 in CD300f knockdown in LAD2 cells was significantly increased compared with NC-LAD2 cells. Myricetin displayed good structural affinity (KD = 7.21 × 10-5) with CD300f by SPR. Molecular docking results showed that hydrogen bonds were formed between myricetin and CD300f, indicating high binding ability (5.6653). Myricetin can upregulate the phosphorylation of SHP-1 and SHP-2 and dephosphorylation in the MRGPRX2 signaling pathway, involving PLCγ1, AKT, P38, and ERK1/2. CONCLUSION In the present study, myricetin is identified as an exogenous ligand for CD300f, which negatively regulates MRGPRX2-mediated MCs activation via CD300f to inhibit MCs degranulation and pseudo-allergic reactions.
Collapse
Affiliation(s)
- Baowen Dang
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China; College of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Shiting Hu
- College of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yonghui Zhang
- College of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yihan Huang
- College of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Tao Zhang
- College of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China.
| | - Hongli An
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
| |
Collapse
|
8
|
Hu Q, Yang L, Shan Z, Wen S, Lu H, Zou Z, Guo J, Liu X, Xie W, Cao Y, Wang Z, Yang L, Wang X. The interaction of CD300lf and ceramide reduces the development of periodontitis by inhibiting osteoclast differentiation. J Clin Periodontol 2023; 50:183-199. [PMID: 36089906 DOI: 10.1111/jcpe.13724] [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: 03/31/2022] [Revised: 07/24/2022] [Accepted: 09/06/2022] [Indexed: 01/20/2023]
Abstract
AIM The regulation of osteoclasts (OCs) by inhibitory immunoreceptors maintains bone homeostasis and is considered an important determinant of the extent of periodontal pathology. The aim of this study was to investigate the role of the inhibitory immunoreceptor CD300lf and its ligand ceramide in osteoclastogenesis in periodontitis. MATERIALS AND METHODS The expression of CD300lf was measured in vitro and in a ligature-induced periodontitis model. The effect of CD300lf ablation on osteoclastogenesis was examined in ligature-retained and ligature removal periodontitis models. The effect of ceramide, the ligand of CD300lf, was examined in osteoclastogenesis in vitro and in vivo by smearing 20 μg of ceramide dissolved in carboxymethylcellulose on teeth and gingiva every other day in an experimental periodontitis model and ligature removal model. RESULTS CD300lf expression was downregulated during osteoclastogenesis. Ablation of CD300lf in the ligature-induced periodontitis model increased the number of OCs and exacerbated bone damage. Bone resorption caused by CD300lf ablation was reversible following ligature removal. CD300lf-ceramide binding suppressed osteoclastogenesis in vitro and inhibited alveolar bone loss in a mouse periodontitis model. CONCLUSIONS Our findings reveal that CD300lf-ceramide binding plays a critical negative role in alveolar bone loss in periodontitis by inhibiting OCs differentiation.
Collapse
Affiliation(s)
- Qiannan Hu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Lisa Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhongyan Shan
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shuqiong Wen
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Huanzi Lu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhaolei Zou
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Junyi Guo
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiangqi Liu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Wenqiang Xie
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yang Cao
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhi Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Le Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xi Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, Guangdong, China
| |
Collapse
|
9
|
Che D, Zhang T, Zhang T, Zheng Y, Hou Y, Geng S, He L. Clarithromycin-treated chronic spontaneous urticaria with the negative regulation of FcεRΙ and MRGPRX2 activation via CD300f. Int Immunopharmacol 2022; 110:109063. [PMID: 35853276 DOI: 10.1016/j.intimp.2022.109063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 11/29/2022]
Abstract
Mast cells (MCs) are main effector cells in chronic spontaneous urticaria (CSU). Both Fc epsilon RI (FcεRΙ)- and MAS-related G coupled receptor-X2 (MRGPRX2)-mediated MC activations affect CSU course. Leukocyte mono-immunoglobulin-like receptor 3 (CD300f) has been shown to regulate FcεRΙ activation. However, no study has verified CD300f is a target to cure CSU. Therefore this study aimed to verify whether clarithromycin (CLA) regulates FcεRΙ- and MRGPRX2-mediated MC activations via CD300f and shows therapeutic effect on CSU. The target of CLA was verification. CLA inhibited FcεRΙ- and MRGPRX2-mediated MC activations were shown in vivo and in vitro. A single-center, self-comparison study was performed, and CLA-treated CSU was investigated in 28 patients who were not sensitive to the third-generation antihistamines. Serum inflammatory mediators in patients before and after CLA administration were analyzed. CLA effectively inhibited type Ι anaphylactic reactions and pseudo-allergic reactions in mice. Moreover, CLA inhibited FcεRΙ- and MRGPRX2-mediated MC signaling pathway activation. Regulatory effects of CLA were decreased significantly after CD300f knockdown. CLA effectively alleviated the symptoms of wheal and itch and reduced serum cytokine levels in patients. CLA negatively regulated FcεRΙ- and MRGPRX2-mediated MC activation via CD300f and showed significant therapeutic effect on CSU.
Collapse
Affiliation(s)
- Delu Che
- Department of Dermatology, Xi'an Jiaotong University Second Affiliated Hospital, Xi'an 710061, China; School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an 710000, China
| | - Tao Zhang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Tianxiao Zhang
- School of Public Health, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yi Zheng
- Department of Dermatology, Xi'an Jiaotong University Second Affiliated Hospital, Xi'an 710061, China
| | - Yajing Hou
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China
| | - Songmei Geng
- Department of Dermatology, Xi'an Jiaotong University Second Affiliated Hospital, Xi'an 710061, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an 710000, China.
| | - Langchong He
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China.
| |
Collapse
|
10
|
Che D, Zheng Y, Hou Y, Li T, Du X, Geng S. Dehydroandrographolide targets CD300f and negatively regulated MRGPRX2-induced pseudo-allergic reaction. Phytother Res 2022; 36:2173-2185. [PMID: 35312106 DOI: 10.1002/ptr.7445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 02/21/2022] [Accepted: 03/08/2022] [Indexed: 11/10/2022]
Abstract
Mas-related G protein-coupled receptor X2 (MRGPRX2) mediates mast cells (MCs) activation, which is a key target for the treatment of allergic diseases. However, there are few drugs targeting MRGPRX2. Leukocyte mono-immunoglobulin-like receptor 3 (CD300f) is a negative regulator of FcεRΙ-mediated MC activation. However, the regulatory effect of CD300f on MRGPRX2 remains unclear. Dehydroandrographolide (DA) is a main contributor of Andrographis paniculata (Burm.f.) Nees (family: Acanthaceae) have been shown to inhibit type I hypersensitivity. The aim of this study was to determine whether DA negatively regulated MRGPRX2-mediated MC activation via CD300f and showed therapeutic effect on pseudo-allergic reactions. Mouse allergic models and MC degranulation were detected in vivo and in vitro, and inflammatory mediators were detected. siRNA interference and Biacore were used to verify the target. DA inhibited pseudo-allergic reactions by reducing vasodilation and serum cytokine levels in mice and inhibited MRGPRX2-mediated MC activation. The regulatory effect of DA was significantly decreased after the knockdown of CD300f expression. Moreover, DA upregulated the phosphorylation level of Src homology region 2 domain-containing phosphatase (SHP)-1 and SHP-2, which are key kinases in the negative regulatory signaling pathways associated with CD300f. In conclusion, DA negatively regulates MRGPRX2-mediated MC activation via CD300f to inhibit pseudo-allergic reactions.
Collapse
Affiliation(s)
- Delu Che
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Yi Zheng
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Yajing Hou
- Department of Pharmacy, Xi'an Jiaotong University, Xi'an, China
| | - Ting Li
- Department of Pharmacy, Shaanxi Traditional Chinese Medicine Hospital, Xi'an, China
| | - Xueshan Du
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China
| | - Songmei Geng
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China.,Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| |
Collapse
|
11
|
Kelley SM, Ravichandran KS. Putting the brakes on phagocytosis: "don't-eat-me" signaling in physiology and disease. EMBO Rep 2021; 22:e52564. [PMID: 34041845 DOI: 10.15252/embr.202152564] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/12/2021] [Accepted: 04/29/2021] [Indexed: 12/12/2022] Open
Abstract
Timely removal of dying or pathogenic cells by phagocytes is essential to maintaining host homeostasis. Phagocytes execute the clearance process with high fidelity while sparing healthy neighboring cells, and this process is at least partially regulated by the balance of "eat-me" and "don't-eat-me" signals expressed on the surface of host cells. Upon contact, eat-me signals activate "pro-phagocytic" receptors expressed on the phagocyte membrane and signal to promote phagocytosis. Conversely, don't-eat-me signals engage "anti-phagocytic" receptors to suppress phagocytosis. We review the current knowledge of don't-eat-me signaling in normal physiology and disease contexts where aberrant don't-eat-me signaling contributes to pathology.
Collapse
Affiliation(s)
- Shannon M Kelley
- Center for Cell Clearance, University of Virginia, Charlottesville, VA, USA.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA
| | - Kodi S Ravichandran
- Center for Cell Clearance, University of Virginia, Charlottesville, VA, USA.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA.,VIB-UGent Center for Inflammation Research, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| |
Collapse
|
12
|
Valiate BVS, Queiroz-Junior CM, Levi-Schaffer F, Galvão I, Teixeira MM. CD300a contributes to the resolution of articular inflammation triggered by MSU crystals by controlling neutrophil apoptosis. Immunology 2021; 164:305-317. [PMID: 34002852 DOI: 10.1111/imm.13371] [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] [Received: 02/19/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 12/27/2022] Open
Abstract
Gout is an inflammatory disease triggered by deposition of monosodium urate (MSU) crystals in the joints, resulting in high neutrophil influx and pain. Here, we studied the role of the inhibitory receptor CD300a in the resolution process in a murine model of gout. We found increased CD300a expression on neutrophils emigrated to the joint. When compared to WT mice, CD300a-/- mice had persistent neutrophil influx till 24 hr after MSU injection. This was associated with increased concentration of IL-1β and greater tissue damage in the joints of CD300a-/- mice. There was an increase in the percentage of apoptotic neutrophils in the synovial lavage of WT mice, as compared to CD300a-/- mice. This difference was reflected in the decline of efferocytic events in the synovial cavity of CD300a-/- mice 24 hr after MSU injection. A CD300a agonistic antibody was shown, for the first time, to increase apoptosis of human neutrophils, and this was associated with cleavage of caspase-8. In conclusion, our results reveal an important role of CD300a in the control of leucocyte infiltration, IL-1β production and caspase-8 cleavage in neutrophils, contributing to the resolution of inflammation triggered by MSU injection.
Collapse
Affiliation(s)
- Bruno V S Valiate
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Celso M Queiroz-Junior
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Francesca Levi-Schaffer
- Pharmacology and Experimental Therapeutics Unit, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Izabela Galvão
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro M Teixeira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| |
Collapse
|
13
|
Saheb Sharif-Askari N, Saheb Sharif-Askari F, Mdkhana B, Al Heialy S, Alsafar HS, Hamoudi R, Hamid Q, Halwani R. Enhanced expression of immune checkpoint receptors during SARS-CoV-2 viral infection. Mol Ther Methods Clin Dev 2021; 20:109-121. [PMID: 33200082 PMCID: PMC7658590 DOI: 10.1016/j.omtm.2020.11.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/04/2020] [Indexed: 12/17/2022]
Abstract
The immune system is tightly regulated by the activity of stimulatory and inhibitory immune receptors. This immune homeostasis is usually disturbed during chronic viral infection. Using publicly available transcriptomic datasets, we conducted in silico analyses to evaluate the expression pattern of 38 selected immune inhibitory receptors (IRs) associated with different myeloid and lymphoid immune cells during coronavirus disease 2019 (COVID-19) infection. Our analyses revealed a pattern of overall upregulation of IR mRNA during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. A large number of IRs expressed on both lymphoid and myeloid cells were upregulated in nasopharyngeal swabs (NPSs), while lymphoid-associated IRs were specifically upregulated in autopsies, reflecting severe, terminal stage COVID-19 disease. Eight genes (BTLA, LAG3, FCGR2B, PDCD1, CEACAM1, CTLA4, CD72, and SIGLEC7), shared by NPSs and autopsies, were more expressed in autopsies and were directly correlated with viral levels. Single-cell data from blood and bronchoalveolar samples also reflected the observed association between IR upregulation and disease severity. Moreover, compared to SARS-CoV-1, influenza, and respiratory syncytial virus infections, the number and intensities of upregulated IRs were higher in SARS-CoV-2 infections. In conclusion, the immunopathology and severity of COVID-19 could be attributed to dysregulation of different immune inhibitors. Targeting one or more of these immune inhibitors could represent an effective therapeutic approach for the treatment of COVID-19 early and late immune dysregulations.
Collapse
Affiliation(s)
- Narjes Saheb Sharif-Askari
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Fatemeh Saheb Sharif-Askari
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Bushra Mdkhana
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Saba Al Heialy
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, McGill University, Montreal, QC, Canada
| | - Habiba S. Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Rifat Hamoudi
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Qutayba Hamid
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, McGill University, Montreal, QC, Canada
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Rabih Halwani
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Prince Abdullah Ben Khaled Celiac Disease Research Chair, Department of Pediatrics, Faculty of Medicine, King Saud University, Saudi Arabia
| |
Collapse
|
14
|
Cao Y, Ao T, Wang X, Wei W, Fan J, Tian X. CD300a and CD300f molecules regulate the function of leukocytes. Int Immunopharmacol 2021; 93:107373. [PMID: 33548578 DOI: 10.1016/j.intimp.2021.107373] [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: 11/19/2020] [Revised: 01/02/2021] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
The CD300 molecule family is a type I transmembrane glycoprotein expressed on cell membrane of human and other mammals, and of its eight members, only CD300a and CD300f are classified as inhibitory receptors. CD300a and CD300f play an important role in regulating the function of leukocytes, such as activation, proliferation, differentiation, migration and immunity function. They are considered as potential targets for studying the development and progression of inflammation, infection and other diseases. Here, we review the expression and regulatory mechanisms of CD300a and CD300f on leukocytes, as well as their effects on relevant diseases.
Collapse
Affiliation(s)
- Yue Cao
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Tianrang Ao
- Department of Cardiology, Peking Union Medical College Hospital, Tsinghua University, Beijing 100730, China
| | - Xiaohong Wang
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Wumei Wei
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Jun Fan
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China
| | - Xiaohong Tian
- Department of Tissue Engineering, School of Fundamental Science, China Medical University, Shenyang, Liaoning 110122, China.
| |
Collapse
|
15
|
Shi L, Rocha M, Zhang W, Jiang M, Li S, Ye Q, Hassan SH, Liu L, Adair MN, Xu J, Luo J, Hu X, Wechsler LR, Chen J, Shi Y. Genome-wide transcriptomic analysis of microglia reveals impaired responses in aged mice after cerebral ischemia. J Cereb Blood Flow Metab 2020; 40:S49-S66. [PMID: 32438860 PMCID: PMC7687039 DOI: 10.1177/0271678x20925655] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Senescence-associated alterations in microglia may have profound impact on cerebral homeostasis and stroke outcomes. However, the lack of a transcriptome-wide comparison between young and aged microglia in the context of ischemia limits our understanding of aging-related mechanisms. Herein, we performed RNA sequencing analysis of microglia purified from cerebral hemispheres of young adult (10-week-old) and aged (18-month-old) mice five days after distal middle cerebral artery occlusion or after sham operation. Considerable transcriptional differences were observed between young and aged microglia in healthy brains, indicating heightened chronic inflammation in aged microglia. Following stroke, the overall transcriptional activation was more robust (>13-fold in the number of genes upregulated) in young microglia than in aged microglia. Gene clusters with functional implications in immune inflammatory responses, immune cell chemotaxis, tissue remodeling, and cell-cell interactions were markedly activated in microglia of young but not aged stroke mice. Consistent with the genomic profiling predictions, post-stroke cerebral infiltration of peripheral immune cells was markedly decreased in aged mice compared to young mice. Moreover, post-ischemic aged microglia demonstrated reduced interaction with neighboring neurons and diminished polarity toward the infarct lesion. These alterations in microglial gene response and behavior may contribute to aging-driven vulnerability and poorer recovery after ischemic stroke.
Collapse
Affiliation(s)
- Ligen Shi
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Marcelo Rocha
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Wenting Zhang
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ming Jiang
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sicheng Li
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Qing Ye
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, USA
| | - Sulaiman H Hassan
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Liqiang Liu
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Maya N Adair
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jing Xu
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jianhua Luo
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Xiaoming Hu
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, USA
| | - Lawrence R Wechsler
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jun Chen
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, USA
| | - Yejie Shi
- Department of Neurology, Pittsburgh Institute of Brain Disorders & Recovery and UPMC Stroke Institute, University of Pittsburgh, Pittsburgh, PA, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, USA
| |
Collapse
|
16
|
Rezaie AR, Giri H. Antithrombin: An anticoagulant, anti-inflammatory and antibacterial serpin. J Thromb Haemost 2020; 18:528-533. [PMID: 32112532 PMCID: PMC7080319 DOI: 10.1111/jth.14724] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 12/20/2019] [Accepted: 12/23/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Alireza R. Rezaie
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Hemant Giri
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104
| |
Collapse
|
17
|
A human antithrombin isoform dampens inflammatory responses and protects from organ damage during bacterial infection. Nat Microbiol 2019; 4:2442-2455. [PMID: 31548687 DOI: 10.1038/s41564-019-0559-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/08/2019] [Indexed: 11/09/2022]
Abstract
Severe infectious diseases are often characterized by an overwhelming and unbalanced systemic immune response to microbial infections. Human antithrombin (hAT) is a crucial coagulation inhibitor with anti-inflammatory activities. Here we identify three hAT-binding proteins (CD13, CD300f and LRP-1) on human monocytes that are involved in blocking the activity of nuclear factor-κB. We found that the modulating effect is primarily restricted to the less abundant β-isoform (hβAT) of hAT that lacks N-glycosylation at position 135. Individuals with a mutation at this position have increased production of hβAT and analysis of their blood, which was stimulated ex vivo with lipopolysaccharide, showed a decreased inflammatory response. Similar findings were recorded when heterozygotic mice expressing hAT or hβAT were challenged with lipopolysaccharide or infected with Escherichia coli bacteria. Our results finally demonstrate that in a lethal E. coli infection model, survival rates increased when mice were treated with hβAT one hour and five hours after infection. The treatment also resulted in a reduction of the inflammatory response and less severe organ damage.
Collapse
|
18
|
Expression of CD300lf by microglia contributes to resistance to cerebral malaria by impeding the neuroinflammation. Genes Immun 2019; 21:45-62. [PMID: 31501529 DOI: 10.1038/s41435-019-0085-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/30/2019] [Accepted: 06/06/2019] [Indexed: 01/28/2023]
Abstract
Genetic mapping and genome-wide studies provide evidence for the association of several genetic polymorphisms with malaria, a complex pathological disease with multiple severity degrees. We have previously described Berr1and Berr2 as candidate genes identified in the WLA/Pas inbreed mouse strain predisposing to resistance to cerebral malaria (CM) induced by P. berghei ANKA. We report in this study the phenotypic and functional characteristics of a congenic strain we have derived for Berr2WLA allele on the C57BL/6JR (B6) background. B6.WLA-Berr2 was found highly resistant to CM compared to C57BL/6JR susceptible mice. The mechanisms associated with CM resistance were analyzed by combining genotype, transcriptomic and immune response studies. We found that B6.WLA-Berr2 mice showed a reduced parasite sequestration and blood-brain barrier disruption with low CXCR3+ T cell infiltration in the brain along with altered glial cell response upon P. berghei ANKA infection compared to B6. In addition, we have identified the CD300f, belonging to a family of Ig-like encoding genes, as a potential candidate associated with CM resistance. Microglia cells isolated from the brain of infected B6.WLA-Berr2 mice significantly expressed higher level of CD300f compared to CMS mice and were associated with inhibition of inflammatory response.
Collapse
|
19
|
Andresen AMS, Lutfi E, Ruyter B, Berge G, Gjøen T. Interaction between dietary fatty acids and genotype on immune response in Atlantic salmon (Salmo salar) after vaccination: A transcriptome study. PLoS One 2019; 14:e0219625. [PMID: 31365530 PMCID: PMC6668776 DOI: 10.1371/journal.pone.0219625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/27/2019] [Indexed: 01/23/2023] Open
Abstract
A pivotal matter to aquaculture is the sourcing of sustainable resources as ingredients to aquafeeds. Levels of plant delivered oils as source of fatty acids (FA) in aquafeeds have reached around 70% resulting in reduced levels of long-chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA), such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), in salmon fillet composition. EPA and DHA can modulate inflammation and immune response, so it is crucial to understand how fish immune response is affected by low LC n-3 PUFA diet and if this diet can have a detrimental effect on vaccine response. Atlantic salmon (Salmo salar) can produce EPA/DHA from α-linolenic acid (ALA) and this endogenous capacity can be explored to develop families with higher tolerance to low LC n-3 PUFA diets. Here we analyze innate and adaptive immune response in Atlantic salmon to a commercial vaccine after being fed low levels of EPA and DHA, and we also compare three strains of salmon selected by their endogenous capacity of synthesizing LC- n-3 PUFA. A total of 2,890 differentially expressed genes (DEGs) were identified (p-value adjusted < 0.1) when comparing vaccinated fish against control non-vaccinated. Gene ontology (GO) and KEGG analysis with 442 up/downregulated genes revealed that most DEGs were both related to immune response as well as part of important immune related pathways, as "Toll-like receptor" and "Cytokine-Cytokine interaction". Adaptive response was also addressed by measuring antigen specific IgM, and titers were significantly higher than in the pre-immune fish at 62 days post-immunization. However, diet and strain had no/little effect on vaccine-specific IgM or innate immune responses. Atlantic salmon therefore display robustness in its response to vaccination even when feed low levels of LC n-3 PUFA.
Collapse
Affiliation(s)
| | - Esmail Lutfi
- Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Bente Ruyter
- Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Gerd Berge
- Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), Ås, Norway
| | - Tor Gjøen
- Department of Pharmacy, Section for Pharmacology and Pharmaceutical Biosciences, University of Oslo, Oslo, Norway
| |
Collapse
|
20
|
Yang Y, Wang C, Cheng P, Zhang X, Li X, Hu Y, Xu F, Hong F, Dong G, Xiong H. CD180 Ligation Inhibits TLR7- and TLR9-Mediated Activation of Macrophages and Dendritic Cells Through the Lyn-SHP-1/2 Axis in Murine Lupus. Front Immunol 2018; 9:2643. [PMID: 30498494 PMCID: PMC6249336 DOI: 10.3389/fimmu.2018.02643] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/26/2018] [Indexed: 12/31/2022] Open
Abstract
Activation of TLR7 and TLR9 by endogenous RNA- or DNA-containing ligands, respectively, can lead to hyper-activation of immune cells, including macrophages and DCs, subsequently contributes to the pathogenesis of SLE. CD180, a TLR-like protein, is specifically involved in the development and activation of immune cells. Our previous study and others have reported that CD180-negative B cells are dramatically increased in SLE patients and responsible for the production of auto-antibodies. However, the mode of CD180 expression on macrophages and DCs in SLE remains unclear and the role of CD180 on regulating TLR7- and TLR9-mediated activation of macrophages and DCs are largely unknown. In the present study, we found that the percentages of CD180-negative macrophages and DCs were both increased in SLE patients and lupus-prone MRL/lpr mice compared with healthy donors and wild-type mice, respectively. Notably, ligation of CD180 significantly inhibited the activation of TLR7 and TLR9 signaling pathways in macrophages and DCs through the Lyn-SHP-1/2 axis. What's more, injection of anti-CD180 Ab could markedly ameliorate the lupus-symptoms of imiquimod-treated mice and lupus-prone MRL/lpr mice through inhibiting the activation of macrophages and DCs. Collectively, our results highlight a critical role of CD180 in regulating TLR7- and TLR9-mediated activation of macrophages and DCs, hinting that CD180 can be regarded as a potential therapeutic target for SLE treatment.
Collapse
Affiliation(s)
- Yonghong Yang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China.,Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, China
| | - Cuiling Wang
- Department of Hematology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Panpan Cheng
- Department of Hematology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Xiaobei Zhang
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, China
| | - Xuehui Li
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China
| | - Yuan Hu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Feihong Xu
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Feng Hong
- Department of Central Laboratory, Affiliated Hospital of Jining Medical University, Jining, China
| | - Guanjun Dong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China
| | - Huabao Xiong
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| |
Collapse
|
21
|
Du X, Liu B, Ding Q, He D, Zhang R, Yang F, Fan H, Teng L, Xin T. CD300A inhibits tumor cell growth by downregulating AKT phosphorylation in human glioblastoma multiforme. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:3471-3478. [PMID: 31949725 PMCID: PMC6962892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 05/17/2018] [Indexed: 06/10/2023]
Abstract
Glioblastoma multiforme (GBM) is a primary malignant tumor of the central nervous system with the highest incidence and dismal prognosis. As a member of the CD300 glycoprotein family, CD300A plays a role in cell proliferation, apoptosis, differentiation, and immune response, but its role in solid tumors remains unknown. In this study, CD300A was observed to be overexpressed in human GBM samples using real-time PCR and western blotting. To investigate the role of CD300A in GBM, CCK8, transwell and flow cytometry analysis were performed to examine the proliferation, migration and apoptosis in GBM cell lines, respectively. From our results, knockdown of CD300A blocks cell proliferation and migration, and induces cell apoptosis in human GBM cells U251MG and U87MG. Further, we assessed AKT expression level in CD300A knockdown and negative control cells. The phosphorylation level of AKT was significantly suppressed in CD300A knockdown cells in comparison to negative control cells, suggesting that CD300A promoted tumor cell growth through the AKT pathway. In conclusion, our findings expand the knowledge of CD300A as an oncogene in solid tumor, and provide experimental and theoretical basis for further clinical application.
Collapse
Affiliation(s)
- Xinrui Du
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
- Department of Neurosurgery, Zibo Central HospitalZibo, China
| | - Bin Liu
- Department of Neurosurgery, Kyoto University Graduate School of MedicineKyoto, Japan
| | - Qian Ding
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Dong He
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Rui Zhang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Fan Yang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Haitao Fan
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Liangzhu Teng
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
| | - Tao Xin
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan, China
- Department of Neurosurgery, Jiangxi Provincial People’s HospitalNanchang, China
| |
Collapse
|
22
|
Vitallé J, Zenarruzabeitia O, Terrén I, Plana M, Guardo AC, Leal L, Peña J, García F, Borrego F. Monocytes Phenotype and Cytokine Production in Human Immunodeficiency Virus-1 Infected Patients Receiving a Modified Vaccinia Ankara-Based HIV-1 Vaccine: Relationship to CD300 Molecules Expression. Front Immunol 2017; 8:836. [PMID: 28785262 PMCID: PMC5520290 DOI: 10.3389/fimmu.2017.00836] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 07/03/2017] [Indexed: 12/31/2022] Open
Abstract
A modified vaccinia Ankara-based HIV-1 vaccine clade B (MVA-B) has been tested for safety and immunogenicity in low-risk human immunodeficiency virus (HIV)-uninfected individuals and as a therapeutic vaccine in HIV-1-infected individuals on combined antiretroviral therapy (cART). As a therapeutic vaccine, MVA-B was safe and broadly immunogenic; however, patients still showed a viral rebound upon treatment interruption. Monocytes are an important part of the viral reservoir and several studies suggest that they are partly responsible for the chronic inflammation observed in cART-treated HIV-infected people. The CD300 family of receptors has an important role in several diseases, including viral infections. Monocytes express CD300a, c, e, and f molecules and lipopolysaccharide (LPS) and other stimuli regulate their expression. However, the expression and function of CD300 receptors on monocytes in HIV infection is still unknown. In this work, we investigated for the first time the expression of CD300 molecules and the cytokine production in response to LPS on monocytes from HIV-1-infected patients before and after vaccination with MVA-B. Our results showed that CD300 receptors expression on monocytes from HIV-1-infected patients correlates with markers of HIV infection progression and immune inflammation. Specifically, we observed a positive correlation between the expression of CD300e and CD300f receptors on monocytes with the number of CD4+ T cells of HIV-1-infected patients before vaccination. We also saw a positive correlation between the expression of the inhibitory receptor CD300f and the expression of CD163 on monocytes from HIV-1-infected individuals before and after vaccination. In addition, monocytes exhibited a higher cytokine production in response to LPS after vaccination, almost at the same levels of monocytes from healthy donors. Furthermore, we also described a correlation in the expression of CD300e and CD300f receptors with TNF-α production in response to LPS, only in monocytes of HIV-1-infected patients before vaccination. Altogether, our results describe the impact of HIV-1 and of the MVA-B vaccine in cytokine production and monocytes phenotype.
Collapse
Affiliation(s)
- Joana Vitallé
- Immunopathology Group, BioCruces Health Research Institute, Barakaldo, Spain
| | | | - Iñigo Terrén
- Immunopathology Group, BioCruces Health Research Institute, Barakaldo, Spain
| | - Montserrat Plana
- AIDS Research Group, IDIBAPS, HIVACAT, Hospital Clìnic, University of Barcelona, Barcelona, Spain
| | - Alberto C Guardo
- AIDS Research Group, IDIBAPS, HIVACAT, Hospital Clìnic, University of Barcelona, Barcelona, Spain
| | - Lorna Leal
- AIDS Research Group, IDIBAPS, HIVACAT, Hospital Clìnic, University of Barcelona, Barcelona, Spain
| | - José Peña
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - Felipe García
- AIDS Research Group, IDIBAPS, HIVACAT, Hospital Clìnic, University of Barcelona, Barcelona, Spain
| | - Francisco Borrego
- Immunopathology Group, BioCruces Health Research Institute, Barakaldo, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain.,Basque Center for Transfusion and Human Tissues, Galdakao, Spain
| |
Collapse
|
23
|
CD300f:IL-5 cross-talk inhibits adipose tissue eosinophil homing and subsequent IL-4 production. Sci Rep 2017; 7:5922. [PMID: 28725048 PMCID: PMC5517555 DOI: 10.1038/s41598-017-06397-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/09/2017] [Indexed: 12/22/2022] Open
Abstract
Eosinophils and their associated cytokines IL-4 and IL-5 are emerging as central orchestrators of the immune-metabolic axis. Herein, we demonstrate that cross-talk between the Ig-superfamily receptor CD300f and IL-5 is a key checkpoint that modifies the ability of eosinophils to regulate metabolic outcomes. Generation of Il5 Tg /Cd300f -/- mice revealed marked and distinct increases in eosinophil levels and their production of IL-4 in the white and brown adipose tissues. Consequently, Il5 Tg /Cd300f -/- mice had increased alternatively activated macrophage accumulation in the adipose tissue. Cd300f -/- mice displayed age-related accumulation of eosinophils and macrophages in the adipose tissue and decreased adipose tissue weight, which was associated with decreased diet-induced weight gain and insulin resistance. Notably, Il5 Tg /CD300f -/- were protected from diet-induced weight gain and glucose intolerance. These findings highlight the cross-talk between IL-5 receptor and CD300f as a novel pathway regulating adipose tissue eosinophils and offer new entry points for therapeutic intervention for obesity and its complications.
Collapse
|
24
|
Liu F, Ji J, Li X, Li X, Xu J, Yue H, Zhao S, Fan H, Hou Y. Decreased CD1d level is associated with CD86 over-expression in B cells from systemic lupus erythematosus. Acta Biochim Biophys Sin (Shanghai) 2017; 49:328-337. [PMID: 28338767 DOI: 10.1093/abbs/gmx011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Indexed: 12/27/2022] Open
Abstract
The disorder of B cells is one of the hallmarks of systemic lupus erythematosus (SLE). The activation state indicated by CD86 of B cells from SLE is well known, while the defect of regulatory B cells mediated by CD1d is also responsible for the process of SLE. In the present study, we focused on the relationship between B cell activation mediated by CD86 and B cell regulatory function mediated by CD1d. Our results showed that the level of CD1d in B cells was decreased during the early stages of B6.MRLlpr SLE mice and imiquimod-treated (IMQ-treated) mice, while the level of CD86 was significantly increased at the late stage. Moreover, the expression of CD1d showed a significantly negative correlation with CD86 level in B cells from IMQ-treated mice (r = -05741; P = 0.0022), B6.MRLlpr mice (r = -0.7091; P = 0.0268), and SLE patients (r = -0.4125; P = 0.0404). The in vivo and in vitro experiments with splenocytes demonstrated that CD1d signaling pathway could inhibit toll-like receptor 7 (TLR7)-induced CD86 expression of B cells. Further studies showed that this relationship also affected antibody production. Thus, our results confirmed the association of CD1d and CD86 levels in B cells from SLE, and demonstrated the importance to preserve the immunoregulatory function of B cells mediated by CD1d in the progression of SLE.
Collapse
Affiliation(s)
- Fei Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Jianjian Ji
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Xiujun Li
- Department of Obstetrics and Gynecology, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing 210008, China
| | - Xiaojing Li
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Jingjing Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Huimin Yue
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Shuli Zhao
- State Key Laboratory of Reproductive Medicine, Central Laboratory of Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Hongye Fan
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Yayi Hou
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing 210093, China
| |
Collapse
|
25
|
Shiba E, Izawa K, Kaitani A, Isobe M, Maehara A, Uchida K, Maeda K, Nakano N, Ogawa H, Okumura K, Kitamura T, Shimizu T, Kitaura J. Ceramide-CD300f Binding Inhibits Lipopolysaccharide-induced Skin Inflammation. J Biol Chem 2017; 292:2924-2932. [PMID: 28073916 PMCID: PMC5314187 DOI: 10.1074/jbc.m116.768366] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/08/2017] [Indexed: 01/10/2023] Open
Abstract
LPS triggers inflammatory responses; however, the negative regulation of LPS responses in vivo remains poorly understood. CD300f is an inhibitory receptor among the CD300 family of paired activating and inhibitory receptors. We have previously identified ceramide as a ligand for CD300f and shown that the binding of ceramide to CD300f inhibits IgE-mediated mast cell activation and allergic responses in mouse models. Here we identify the critical role of CD300f in inhibiting LPS-induced skin inflammation. CD300f deficiency remarkably enhanced LPS-induced skin edema and neutrophil recruitment in mice. Higher levels of factors that increase vascular permeability and of factors that induce neutrophil recruitment were detected in LPS-injected skin pouch exudates of CD300f-/- mice as compared with wild-type mice. CD300f was highly expressed in mast cells and recruited neutrophils, but not in macrophages, among skin myeloid cells. CD300f deficiency failed to influence the intrinsic migratory ability of neutrophils. Ceramide-CD300f binding suppressed the release of chemical mediators from mast cells and from neutrophils in response to LPS. Adoptive transfer experiments indicated that mast cells mediated enhanced edema in LPS-stimulated skin of CD300f-/- mice, whereas mast cells together with recruited neutrophils mediated robust neutrophil accumulation. Importantly, administering a ceramide antibody or ceramide-containing vesicles enhanced or suppressed LPS-induced skin inflammation of wild-type mice, respectively. Thus, ceramide-CD300f binding inhibits LPS-induced skin inflammation, implicating CD300f as a negative regulator of Toll-like receptor 4 (TLR4) signaling in vivo.
Collapse
Affiliation(s)
- Emiko Shiba
- From the Atopy Research Center and.,Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, and
| | - Kumi Izawa
- From the Atopy Research Center and.,the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Ayako Kaitani
- From the Atopy Research Center and.,the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Masamichi Isobe
- From the Atopy Research Center and.,the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Akie Maehara
- From the Atopy Research Center and.,the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | | | | | | | | | | | - Toshio Kitamura
- the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Toshiaki Shimizu
- From the Atopy Research Center and.,Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, and
| | - Jiro Kitaura
- From the Atopy Research Center and .,the Division of Cellular Therapy/Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| |
Collapse
|
26
|
|
27
|
Suppression of CD300A inhibits the growth of diffuse large B-cell lymphoma. Oncotarget 2016; 6:31191-202. [PMID: 26435477 PMCID: PMC4741597 DOI: 10.18632/oncotarget.5152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 08/20/2015] [Indexed: 12/13/2022] Open
Abstract
CD300A is a type I transmembrane receptor protein which has shown inhibitory effects on B-cell receptor-mediated signals. In an analysis of public dataset, we found that CD300A mRNA levels were inversely correlated with the overall survival time of patients with diffuse large B-cell lymphoma (DLBCL). To decipher the role of CD300A in DLBCL, we knocked down the expression levels of CD300A in DLBCL cells and found that decreasing levels of CD300A significantly inhibited cell proliferation of OCI-Ly01, Farage, and SUDHL-4 cells, but not of VAL, OCI-Ly10, or SUDHL-8 cells. Mechanistically, reduced expression of CD300A resulted in a marked attenuation of AKT phosphorylation, a key molecular event in tumorigenesis, in OCI-Ly01, Farage, and SUDHL-4 cells. Pharmacologic inhibition of PI3K displayed a similar inhibitory effect on cell proliferation. Furthermore, using a xenograft animal model, we found that decreasing levels of CD300A in OCI-Ly01 and Farage cells significantly inhibited tumor formation in vivo. Collectively, our results suggested an oncogenic role of CD300A in DLBCL which could serve as a potential biomarker and therapeutic target for this malignant disease.
Collapse
|
28
|
Ullah MO, Sweet MJ, Mansell A, Kellie S, Kobe B. TRIF-dependent TLR signaling, its functions in host defense and inflammation, and its potential as a therapeutic target. J Leukoc Biol 2016; 100:27-45. [PMID: 27162325 DOI: 10.1189/jlb.2ri1115-531r] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 04/04/2016] [Indexed: 12/16/2022] Open
Abstract
Toll/IL-1R domain-containing adaptor-inducing IFN-β (TRIF)-dependent signaling is required for TLR-mediated production of type-I IFN and several other proinflammatory mediators. Various pathogens target the signaling molecules and transcriptional regulators acting in the TRIF pathway, thus demonstrating the importance of this pathway in host defense. Indeed, the TRIF pathway contributes to control of both viral and bacterial pathogens through promotion of inflammatory mediators and activation of antimicrobial responses. TRIF signaling also has both protective and pathologic roles in several chronic inflammatory disease conditions, as well as an essential function in wound-repair processes. Here, we review our current understanding of the regulatory mechanisms that control TRIF-dependent TLR signaling, the role of the TRIF pathway in different infectious and noninfectious pathologic states, and the potential for manipulating TRIF-dependent TLR signaling for therapeutic benefit.
Collapse
Affiliation(s)
- M Obayed Ullah
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Matthew J Sweet
- Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, Queensland, Australia; and
| | - Ashley Mansell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Monash University, Melbourne, Victoria, Australia
| | - Stuart Kellie
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Bostjan Kobe
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia;
| |
Collapse
|
29
|
Nesterovitch AB, Arbieva Z, Toth DM, Tharp MD, Glant TT. A differential gene expression study: Ptpn6 (SHP-1)-insufficiency leads to neutrophilic dermatosis-like disease (NDLD) in mice. J Dermatol Sci 2016; 83:17-25. [PMID: 27020408 DOI: 10.1016/j.jdermsci.2016.03.005] [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: 09/30/2015] [Revised: 01/25/2016] [Accepted: 03/04/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Irradiated syngeneic wild-type mice developed the same neutrophilic dermatosis-like disease (NDLD) after adoptive transfer of bone marrow cells from Ptpn6(meb2/meb2) mutant mice. OBJECTIVE To analyze differentially expressed genes in the bone marrow of mice with NDLD to gain insight into the role of Ptpn6 in myelopoietic bone marrow pathology, and the mechanisms by which Ptpn6 insufficiency in the hematopoietic cells can lead to the development of skin lesions. METHODS As Ptpn6 is involved in a myriad of signaling pathways, we used a global approach with microarray technology for the first time to characterize changes in the bone marrow and skin of motheaten-type mice. RESULTS A total number of 1,511 probe sets in the bone marrow showed at least two-fold changes with FDR <0.05, of which 256 probe sets had over four-fold changes. A group of 63 genes in the bone marrow of NDLD mice had more than a 4-fold change with FDR <0.0001. From 503 genes encoding proteins with ITIM motif that binds to Ptpn6, 109 were up-regulated and 83 were down-regulated. We found that genes encoding hematopoietic receptors, neutrophil chemoattractants, Toll-like receptors (Tlr1, Tlr2 and Tlr4) and C-type lectin innate immunity receptors (Clec4e, Clec4d, Clec4n, Clec4a2 and Clec4a3) were significantly up-regulated in both NDLD bone marrow and skin. The Il1b gene was also significantly overexpressed in skin samples, confirming the importance of the IL-1/TLR pathway in the development of early skin inflammation in NDLD mice. CONCLUSION Our results suggest that innate immunity genes play a major role in development of neutrophilic dermatosis-like disease in mice.
Collapse
Affiliation(s)
| | - Zarema Arbieva
- Core Genomics Facility, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Daniel M Toth
- Department of Orthopedic Surgery (Section of Molecular Medicine), Biochemistry and Internal Medicine (Section of Rheumatology), Rush University Medical Center, Chicago, IL 60612, USA
| | - Michael D Tharp
- Department of Dermatology, Rush University Medical Center, Chicago, IL 60612, USA
| | - Tibor T Glant
- Department of Orthopedic Surgery (Section of Molecular Medicine), Biochemistry and Internal Medicine (Section of Rheumatology), Rush University Medical Center, Chicago, IL 60612, USA
| |
Collapse
|
30
|
The Phosphatidylserine and Phosphatidylethanolamine Receptor CD300a Binds Dengue Virus and Enhances Infection. J Virol 2015; 90:92-102. [PMID: 26468529 DOI: 10.1128/jvi.01849-15] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 09/28/2015] [Indexed: 12/27/2022] Open
Abstract
UNLABELLED Dengue virus (DENV) is the etiological agent of the major human arboviral disease. We previously demonstrated that the TIM and TAM families of phosphatidylserine (PtdSer) receptors involved in the phagocytosis of apoptotic cells mediate DENV entry into target cells. We show here that human CD300a, a recently identified phospholipid receptor, also binds directly DENV particles and enhances viral entry. CD300a facilitates infection of the four DENV serotypes, as well as of other mosquito-borne viruses such as West Nile virus and Chikungunya virus. CD300a acts as an attachment factor that enhances DENV internalization through clathrin-mediated endocytosis. CD300a recognizes predominantly phosphatidylethanolamine (PtdEth) and to a lesser extent PtdSer associated with viral particles. Mutation of residues in the IgV domain critical for phospholipid binding abrogate CD300a-mediated enhancement of DENV infection. Finally, we show that CD300a is expressed at the surface of primary macrophages and anti-CD300a polyclonal antibodies partially inhibited DENV infection of these cells. Overall, these data indicate that CD300a is a novel DENV binding receptor that recognizes PtdEth and PtdSer present on virions and enhance infection. IMPORTANCE Dengue disease, caused by dengue virus (DENV), has emerged as the most important mosquito-borne viral disease of humans and is a major global health concern. The molecular bases of DENV-host cell interactions during virus entry are poorly understood, hampering the discovery of new targets for antiviral intervention. We recently discovered that the TIM and TAM proteins, two receptor families involved in the phosphatidylserine (PtdSer)-dependent phagocytic removal of apoptotic cells, interact with DENV particles-associated PtdSer through a mechanism that mimics the recognition of apoptotic cells and mediate DENV infection. In this study, we show that CD300a, a novel identified phospholipid receptor, mediates DENV infection. CD300a-dependent DENV infection relies on the direct recognition of phosphatidylethanolamine and to a lesser extent PtdSer associated with viral particles. This study provides novel insights into the mechanisms that mediate DENV entry and reinforce the concept that DENV uses an apoptotic mimicry strategy for viral entry.
Collapse
|
31
|
Zenarruzabeitia O, Vitallé J, Eguizabal C, Simhadri VR, Borrego F. The Biology and Disease Relevance of CD300a, an Inhibitory Receptor for Phosphatidylserine and Phosphatidylethanolamine. THE JOURNAL OF IMMUNOLOGY 2015; 194:5053-60. [PMID: 25980030 DOI: 10.4049/jimmunol.1500304] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The CD300a inhibitory receptor belongs to the CD300 family of cell surface molecules that regulate a diverse array of immune cell processes. The inhibitory signal of CD300a depends on the phosphorylation of tyrosine residues embedded in ITIMs of the cytoplasmic tail. CD300a is broadly expressed on myeloid and lymphoid cells, and its expression is differentially regulated depending on the cell type. The finding that CD300a recognizes phosphatidylserine and phosphatidylethanolamine, two aminophospholipids exposed on the outer leaflet of dead and activated cells, has shed new light on its role in the modulation of immune functions and in its participation in the host response to several diseases states, such as infectious diseases, cancer, allergy, and chronic inflammatory diseases. This review summarizes the literature on CD300a expression, regulation, signaling pathways, and ligand interaction, as well as its role in fine tuning immune cell functions and its clinical relevance.
Collapse
Affiliation(s)
| | - Joana Vitallé
- Immunopathology Group, BioCruces Health Research Institute, Barakaldo 48903, Spain
| | - Cristina Eguizabal
- Cell Therapy and Stem Cell Group, Basque Center for Transfusion and Human Tissues, Galdakao 48960, Spain
| | - Venkateswara R Simhadri
- Division of Biotechnology Review and Research-I, Office of Biotechnology Products Review and Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993; and
| | - Francisco Borrego
- Immunopathology Group, BioCruces Health Research Institute, Barakaldo 48903, Spain; Ikerbasque, Basque Foundation for Science 48903, Bilbao, Spain
| |
Collapse
|
32
|
Peluffo H, Solari-Saquieres P, Negro-Demontel ML, Francos-Quijorna I, Navarro X, López-Vales R, Sayós J, Lago N. CD300f immunoreceptor contributes to peripheral nerve regeneration by the modulation of macrophage inflammatory phenotype. J Neuroinflammation 2015; 12:145. [PMID: 26259611 PMCID: PMC4531482 DOI: 10.1186/s12974-015-0364-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 07/21/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND It has recently become evident that activating/inhibitory cell surface immune receptors play a critical role in regulating immune and inflammatory processes in the central nervous system (CNS). The immunoreceptor CD300f expressed on monocytes, neutrophils, and mast cells modulates inflammation, phagocytosis, and outcome in models of autoimmune demyelination, allergy, and systemic lupus erythematosus. On the other hand, a finely regulated inflammatory response is essential to induce regeneration after injury to peripheral nerves since hematogenous macrophages, together with resident macrophages and de-differentiated Schwann cells, phagocyte distal axonal and myelin debris in a well-orchestrated inflammatory response. The possible roles and expression of CD300f and its ligands have not been reported under these conditions. METHODS By using quantitative PCR (QPCR) and CD300f-IgG2a fusion protein, we show the expression of CD300f and its ligands in the normal and crush injured sciatic nerve. The putative role of CD300f in peripheral nerve regeneration was analyzed by blocking receptor-ligand interaction with the same CD300f-IgG2a soluble receptor fusion protein in sciatic nerves of Thy1-YFP-H mice injected at the time of injury. Macrophage M1/M2 polarization phenotype was also analyzed by CD206 and iNOS expression. RESULTS We found an upregulation of CD300f mRNA and protein expression after injury. Moreover, the ligands are present in restricted membrane patches of Schwann cells, which remain stable after the lesion. The lesioned sciatic nerves of Thy1-YFP-H mice injected with a single dose of CD300f-IgG2a show long lasting effects on nerve regeneration characterized by a lower number of YFP-positive fibres growing into the tibial nerve after 10 days post lesion (dpl) and a delayed functional recovery when compared to PBS- or IgG2a-administered control groups. Animals treated with CD300f-IgG2a show at 10 dpl higher numbers of macrophages and CD206-positive cells and lower levels of iNOS expression than both control groups. At later time points (28 dpl), increased numbers of macrophages and iNOS expression occur. CONCLUSIONS Taken together, these results show that the pair CD300f ligand is implicated in Wallerian degeneration and nerve regeneration by modulating both the influx and phenotype of macrophages.
Collapse
Affiliation(s)
- Hugo Peluffo
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur Montevideo, Mataojo 2020, CP 11400, Montevideo, Uruguay.
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay.
| | - Patricia Solari-Saquieres
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur Montevideo, Mataojo 2020, CP 11400, Montevideo, Uruguay.
| | - Maria Luciana Negro-Demontel
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur Montevideo, Mataojo 2020, CP 11400, Montevideo, Uruguay.
| | - Isaac Francos-Quijorna
- Institute of Neurosciences and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain.
| | - Xavier Navarro
- Institute of Neurosciences and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain.
| | - Ruben López-Vales
- Institute of Neurosciences and Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain.
| | - Joan Sayós
- Immunobiology Group, CIBBIM-Nanomedicine Program, Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain.
| | - Natalia Lago
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur Montevideo, Mataojo 2020, CP 11400, Montevideo, Uruguay.
- Neurodegeneration Laboratory, Institut Pasteur Montevideo, Montevideo, Uruguay.
| |
Collapse
|
33
|
Liu Y, Yin H, Zhao M, Lu Q. TLR2 and TLR4 in autoimmune diseases: a comprehensive review. Clin Rev Allergy Immunol 2015; 47:136-47. [PMID: 24352680 DOI: 10.1007/s12016-013-8402-y] [Citation(s) in RCA: 265] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Autoimmune diseases are immune disorders characterized by T cell hyperactivity and B cell overstimulation leading to overproduction of autoantibodies. Although the pathogenesis of various autoimmune diseases remains to be elucidated, environmental factors have been thought to contribute to the initiation and maintenance of auto-respond inflammation. Toll-like receptors (TLRs) are pattern recognition receptors belonging to innate immunity that recognize and defend invading microorganisms. Besides these exogenous pathogen-associated molecular patterns, TLRs can also bind with damage-associated molecular patterns produced under strike or by tissue damage or cells apoptosis. It is believed that TLRs build a bridge between innate immunity and autoimmunity. There are five adaptors to TLRs including MyD88, TRIF, TIRAP/MAL, TRAM, and SARM. Upon activation, TLRs recruit specific adaptors to initiate the downstream signaling pathways leading to the production of inflammatory cytokines and chemokines. Under certain circumstances, ligation of TLRs drives to aberrant activation and unrestricted inflammatory responses, thereby contributing to the perpetuation of inflammation in autoimmune diseases. In the past, most studies focused on the intracellular TLRs, such as TLR3, TLR7, and TLR9, but recent studies reveal that cell surface TLRs, especially TLR2 and TLR4, also play an essential role in the development of autoimmune diseases and afford multiple therapeutic targets. In this review, we summarized the biological characteristics, signaling mechanisms of TLR2/4, the negative regulators of TLR2/4 pathway, and the pivotal function of TLR2/4 in the pathogenesis of autoimmune diseases including rheumatoid arthritis, systemic lupus erythematosus, systemic sclerosis, Sjogren's syndrome, psoriasis, multiple sclerosis, and autoimmune diabetes.
Collapse
Affiliation(s)
- Yu Liu
- Department of Dermatology, Second Xiangya Hospital, Central South University, #139 Renmin Middle Rd, Changsha, Hunan, 410011, People's Republic of China
| | | | | | | |
Collapse
|
34
|
Moller-Tank S, Maury W. Phosphatidylserine receptors: enhancers of enveloped virus entry and infection. Virology 2014; 468-470:565-580. [PMID: 25277499 PMCID: PMC4252826 DOI: 10.1016/j.virol.2014.09.009] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 07/15/2014] [Accepted: 09/08/2014] [Indexed: 12/23/2022]
Abstract
A variety of both RNA and DNA viruses envelop their capsids in a lipid bilayer. One of the more recently appreciated benefits this envelope is incorporation of phosphatidylserine (PtdSer). Surface exposure of PtdSer disguises viruses as apoptotic bodies; tricking cells into engulfing virions. This mechanism is termed apoptotic mimicry. Several PtdSer receptors have been identified to enhance virus entry and we have termed this group of proteins PtdSer-mediated virus entry enhancing receptors or PVEERs. These receptors enhance entry of a range of enveloped viruses. Internalization of virions by PVEERs provides a broad mechanism of entry with little investment by the virus itself. PVEERs may allow some viruses to attach to cells, thereby making viral glycoprotein/cellular receptor interactions more probable. Alternatively, other viruses may rely entirely on PVEERs for internalization into endosomes. This review provides an overview of PtdSer receptors that serve as PVEERs and the biology behind virion/PVEER interaction. Phosphatidylserine (PtdSer) receptors can mediate entry of enveloped viruses. PtdSer is present on the outer leaflet of the virion envelope. PtdSer receptors are expressed on a variety of primary cells and cell lines. Characteristics of PtdSer receptors that mediate virus entry are defined.
Collapse
Affiliation(s)
- Sven Moller-Tank
- Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA
| | - Wendy Maury
- Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA.
| |
Collapse
|
35
|
Tanaka T, Tahara-Hanaoka S, Nabekura T, Ikeda K, Jiang S, Tsutsumi S, Inagaki T, Magoori K, Higurashi T, Takahashi H, Tachibana K, Tsurutani Y, Raza S, Anai M, Minami T, Wada Y, Yokote K, Doi T, Hamakubo T, Auwerx J, Gonzalez FJ, Nakajima A, Aburatani H, Naito M, Shibuya A, Kodama T, Sakai J. PPARβ/δ activation of CD300a controls intestinal immunity. Sci Rep 2014; 4:5412. [PMID: 24958459 PMCID: PMC4067692 DOI: 10.1038/srep05412] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 06/02/2014] [Indexed: 01/17/2023] Open
Abstract
Macrophages are important for maintaining intestinal immune homeostasis. Here, we show that PPARβ/δ (peroxisome proliferator-activated receptor β/δ) directly regulates CD300a in macrophages that express the immunoreceptor tyrosine based-inhibitory motif (ITIM)-containing receptor. In mice lacking CD300a, high-fat diet (HFD) causes chronic intestinal inflammation with low numbers of intestinal lymph capillaries and dramatically expanded mesenteric lymph nodes. As a result, these mice exhibit triglyceride malabsorption and reduced body weight gain on HFD. Peritoneal macrophages from Cd300a-/- mice on HFD are classically M1 activated. Activation of toll-like receptor 4 (TLR4)/MyD88 signaling by lipopolysaccharide (LPS) results in prolonged IL-6 secretion in Cd300a-/- macrophages. Bone marrow transplantation confirmed that the phenotype originates from CD300a deficiency in leucocytes. These results identify CD300a-mediated inhibitory signaling in macrophages as a critical regulator of intestinal immune homeostasis.
Collapse
Affiliation(s)
- Toshiya Tanaka
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Satoko Tahara-Hanaoka
- Department of Immunology, Faculty of Medicine, Center for TARA and Japan Science and Technology Agency, CREST, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Tsukasa Nabekura
- Department of Immunology, Faculty of Medicine, Center for TARA and Japan Science and Technology Agency, CREST, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Kaori Ikeda
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Shuying Jiang
- 1] Division of Cellular and Molecular Pathology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan [2] Peruseus Proteomics, Tokyo 153-0041, Japan
| | - Shuichi Tsutsumi
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Takeshi Inagaki
- Division of Metabolic Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Kenta Magoori
- Division of Metabolic Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Takuma Higurashi
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
| | - Hirokazu Takahashi
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
| | - Keisuke Tachibana
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Yuya Tsurutani
- 1] Division of Metabolic Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan [2] Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Sana Raza
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Motonobu Anai
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Takashi Minami
- Laboratory for Vascular Biology, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Youichiro Wada
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Koutaro Yokote
- Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Takao Hamakubo
- Department of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Johan Auwerx
- Laboratory of Integrative and Systems Physiology, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
| | - Atsushi Nakajima
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Makoto Naito
- Division of Cellular and Molecular Pathology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Akira Shibuya
- Department of Immunology, Faculty of Medicine, Center for TARA and Japan Science and Technology Agency, CREST, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Tatsuhiko Kodama
- Laboratory for Systems Biology and Medicine (LSBM), Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Juro Sakai
- Division of Metabolic Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| |
Collapse
|
36
|
Moshkovits I, Shik D, Itan M, Karo-Atar D, Bernshtein B, Hershko AY, van Lookeren Campagne M, Munitz A. CMRF35-like molecule 1 (CLM-1) regulates eosinophil homeostasis by suppressing cellular chemotaxis. Mucosal Immunol 2014; 7:292-303. [PMID: 23820751 DOI: 10.1038/mi.2013.47] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 06/04/2013] [Indexed: 02/04/2023]
Abstract
Eosinophil accumulation in health and disease is a hallmark characteristic of mucosal immunity and type 2 helper T cell (Th2) inflammation. Eotaxin-induced CCR3 (chemokine (C-C motif) receptor 3) signaling has a critical role in eosinophil chemotactic responses. Nevertheless, the expressions of immunoreceptor tyrosine-based inhibitory motif-bearing receptors such as CMRF35-like molecule-1 (CLM-1) and their ability to govern eosinophil migration are largely unknown. We now report that CLM-1 (but not CLM-8) is highly and distinctly expressed by colonic and adipose tissue eosinophils. Furthermore, Clm1⁻/⁻ mice display elevated baseline tissue eosinophilia. CLM-1 negatively regulated eotaxin-induced eosinophil responses including eosinophil chemotaxis, actin polymerization, calcium influx, and extracellular signal-regulated kinase (ERK)-1/2, but not p38 phosphorylation. Addition of CLM-1 ligand (e.g., phosphatidylserine) rendered wild-type eosinophils hypochemotactic in vitro and blockade of CLM-1/ligand interactions rendered wild-type eosinophils hyperchemotactic in vitro and in vivo in a model of allergic airway disease. Interestingly, suppression of cellular recruitment via CLM-1 was specific to eosinophils and eotaxin, as leukotriene B₄ (LTB₄)- and macrophage inflammatory protein-1α (MIP-1α)-induced eosinophil and neutrophil migration were not negatively regulated by CLM-1. Finally, peripheral blood eosinophils obtained from allergic rhinitis patients displayed elevated CLM-1/CD300f levels. These data highlight CLM-1 as a novel regulator of eosinophil homeostasis and demonstrate that eosinophil accumulation is constantly governed by CLM-1, which negatively regulates eotaxin-induced eosinophil responses.
Collapse
Affiliation(s)
- I Moshkovits
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - D Shik
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - M Itan
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - D Karo-Atar
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - B Bernshtein
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - A Y Hershko
- Laboratory of Allergy and Clinical Immunology, Department of Medicine, The Herbert Center of Mast Cell Disorders, Meir Medical Center, Kfar Saba, Israel
| | | | - A Munitz
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| |
Collapse
|
37
|
Raggi F, Blengio F, Eva A, Pende D, Varesio L, Bosco MC. Identification of CD300a as a new hypoxia-inducible gene and a regulator of CCL20 and VEGF production by human monocytes and macrophages. Innate Immun 2013; 20:721-34. [PMID: 24131792 DOI: 10.1177/1753425913507095] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Peripheral blood monocytes are recruited to inflammatory and tumor lesions where they undergo terminal differentiation into macrophages. Monocytes/macrophages integrate stimulatory and inhibitory signals present in the pathologic microenvironment through a defined repertoire of cell surface receptors, and deregulated expression of these molecules may result in amplification of inflammation or establishment of immune escape mechanisms. Characterization of the expression and function of these receptors is required for a better understanding of the regulation of monocyte/macrophage activity at pathologic sites. Hypoxia is a common feature of many pathological situations and an important regulator of monocyte/macrophage pro-inflammatory responses. In this study, we identify the leukocyte membrane antigen, CD300a, a member of the CD300 superfamily of immunoregulatory receptors, as a new hypoxia-inducible gene in primary human monocytes and monocyte-derived macrophages. CD300a mRNA up-regulation by hypoxia was rapid and reversible, paralleled by increased surface protein expression, and mediated by hypoxia-inducible factor-1α. CD300a induction was also triggered by the hypoxia-mimetic agent, desferrioxamine. CD300a exhibited both activating and inhibitory potential, differentially regulating CCL20 and vascular endothelial growth factor pro-inflammatory cytokine production by monocytes/macrophages upon triggering by an agonist Ab. These results suggest that CD300a induction by the hypoxic environment represents a mechanism of regulation of monocyte/macrophage pro-inflammatory responses at pathologic sites.
Collapse
Affiliation(s)
- Federica Raggi
- Laboratory of Molecular Biology, Istituto Giannina Gaslini, Genova, Italy
| | - Fabiola Blengio
- Laboratory of Molecular Biology, Istituto Giannina Gaslini, Genova, Italy
| | - Alessandra Eva
- Laboratory of Molecular Biology, Istituto Giannina Gaslini, Genova, Italy
| | | | - Luigi Varesio
- Laboratory of Molecular Biology, Istituto Giannina Gaslini, Genova, Italy
| | - Maria Carla Bosco
- Laboratory of Molecular Biology, Istituto Giannina Gaslini, Genova, Italy
| |
Collapse
|
38
|
Simhadri VR, Mariano JL, Gil-Krzewska A, Zhou Q, Borrego F. CD300c is an activating receptor expressed on human monocytes. J Innate Immun 2013; 5:389-400. [PMID: 23571507 DOI: 10.1159/000350523] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 03/07/2013] [Indexed: 12/13/2022] Open
Abstract
Human CD300 molecules comprise a family of receptors that regulate many immune cell processes. They are mostly expressed on myeloid cells, although expression of two members, CD300a and CD300c, has also been described on lymphocytes. However, due to the lack of specific antibodies that distinguish between these two receptors, it has been difficult to determine the expression pattern and function of CD300a and CD300c in primary cells. Here, we have identified a specific monoclonal antibody, clone TX45, that recognizes only CD300c and show that within freshly isolated blood leukocytes, monocytes are the only cells that express CD300c on the cell surface. In vitro differentiation experiments revealed that CD300c is differentially expressed on different monocyte-derived cells, including macrophages and dendritic cells. Furthermore, TLR ligands LPS and flagellin dynamically regulate the expression of CD300c. Cross-linking of this receptor with clone TX45 monoclonal antibody induced calcium mobilization, upregulation of the costimulatory molecule CD86 and the production of inflammatory cytokines. Importantly, LPS-mediated production of inflammatory cytokines by monocytes was further enhanced if CD300c was simultaneously engaged by the agonist antibody. Altogether, our results show that human CD300c is an activating receptor expressed on monocytes and that it has a potential role in inflammatory responses.
Collapse
Affiliation(s)
- Venkateswara R Simhadri
- Laboratory of Molecular and Developmental Immunology, Division of Monoclonal Antibodies, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892, USA
| | | | | | | | | |
Collapse
|
39
|
Abstract
The CD300 family of molecules modulates a broad and diverse array of immune cell processes via their paired activating and inhibitory receptor functions. The description that CD300 molecules are able to recognize lipids, such as extracellular ceramide, phosphatidylserine, and phosphatidylethanolamine, that are exposed on the outer leaflet of the plasma membrane of dead and activated cells has opened a new field of research. Through their binding to lipids and other ligands, this family of receptors is poised to have a significant role in complex biological processes and in the host response to severe pathological conditions. Indeed, published data have demonstrated their participation in the pathogenesis of several disease states. Moreover, this family of receptors has great potential as targets for diagnosis and therapeutic purposes in infectious diseases, allergies, cancer, and other pathological situations. For instance, one member of the family, CD300a, has been studied as a possible biomarker. Here, a review is provided on the cellular distribution of the human and mouse families of receptors, the stimuli that regulate their expression, their ability to tune leukocyte function and immune responses, their signaling pathways, ligand recognition, and their clinical relevance.
Collapse
|
40
|
CD300 molecule regulation of human dendritic cell functions. Immunol Lett 2012; 149:93-100. [PMID: 23072861 DOI: 10.1016/j.imlet.2012.10.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 10/02/2012] [Accepted: 10/05/2012] [Indexed: 11/24/2022]
Abstract
Dendritic cells (DC) are a heterogeneous population of leucocytes which play a key role in initiating and modulating immune responses. The human CD300 family consists of six immunoregulatory leucocyte membrane molecules that regulate cellular activity including differentiation, viability, cytokine and chemokine secretion, phagocytosis and chemotaxis. Recent work has identified polar lipids as probable ligands for these molecules in keeping with the known evolutionary conservation of this family. CD300 molecules are all expressed by DC; CD300b, d, e and f are restricted to different subpopulations of the myeloid DC lineage. They have been shown to regulate DC function both in vitro and in vivo. In addition DC are able to regulate their CD300 expression in an autocrine manner. The potential to form different CD300 heterodimers adds further complexity to their role in fine tuning DC function. Expression of CD300 molecules is altered in a number of diseases including many where DC are implicated in the pathogenesis. CD300 antibodies have been demonstrated to have significant therapeutic effect in animal models. The mechanisms underlying the immunoregulatory effects of the CD300 family are complex. Deciphering their physiology will allow effective targeting of these molecules as novel therapies in a wide variety of inflammatory diseases.
Collapse
|
41
|
Migalovich-Sheikhet H, Friedman S, Mankuta D, Levi-Schaffer F. Novel identified receptors on mast cells. Front Immunol 2012; 3:238. [PMID: 22876248 PMCID: PMC3410575 DOI: 10.3389/fimmu.2012.00238] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 07/16/2012] [Indexed: 12/25/2022] Open
Abstract
Mast cells (MC) are major participants in the allergic reaction. In addition they possess immunomodulatory roles in the innate and adaptive immune reactions. Their functions are modulated through a number of activating and inhibitory receptors expressed on their surface. This review deals with some of the most recently described receptors, their expression patterns, ligand(s), signal transduction mechanisms, possible cross-talk with other receptors and, last but not least, regulatory functions that the MC can perform based on their receptor expression in health or in disease. Where the receptor role on MC is still not clear, evidences from other hematopoietic cells expressing them is provided as a possible insight for their function on MC. Suggested strategies to modulate these receptors’ activity for the purpose of therapeutic intervention are also discussed.
Collapse
Affiliation(s)
- Helena Migalovich-Sheikhet
- Department of Pharmacology and Experimental Therapeutics, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem Jerusalem, Israel
| | | | | | | |
Collapse
|