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Sun F, Lv H, Feng B, Sun J, Zhang L, Dong B. Identification of natural killer cell-related characteristics to predict the clinical prognosis and immune microenvironment of patients with low-grade glioma. Aging (Albany NY) 2023; 15:6264-6291. [PMID: 37405952 PMCID: PMC10373982 DOI: 10.18632/aging.204850] [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: 03/08/2023] [Accepted: 06/15/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND Individuals with low-grade glioma (LGG) have a dismal prognosis, and most patients will eventually progress to high-grade disease. Therefore, it is crucial to accurately determine their prognoses. METHODS Seventy-nine NK cell genes were downloaded from the LM22 database and univariate Cox regression analysis was utilized to detect NK cell-related genes affecting prognosis. Molecular types were established for LGG using the "ConsensusClusterPlus" R package. The results from a functional enrichment analysis and the immune microenvironment were intensively explored to determine molecular heterogeneity and immune characteristics across distinct subtypes. Furthermore, a RiskScore model was developed and verified using expression profiles of NK cells, and a nomogram consisting of the RiskScore model and clinical traits was constructed. Moreover, pan-cancer traits of NK cells were also investigated. RESULTS The C1 subtype included the greatest amount of immune infiltration and the poorest prognosis among well-established subtypes. The majority of enriched pathways were those involved in tumor progression, including epithelial-mesenchymal transition and cell cycle pathways. Differentially expressed genes among distinct subtypes were determined and used to develop a novel RiskScore model. This model was able to distinguish low-risk patients with LGG from those with high-risk disease. An accurate nomogram including the RiskScore, disease grade and patient's age was constructed to predict clinical outcomes of LGG patients. Finally, a pan-cancer analysis further highlighted the crucial roles of NK cell-related genes in the tumor microenvironment. CONCLUSIONS An NK cell-related RiskScore model can accurately predict the prognoses of patients with LGG and provide valuable insights into personalized medicine.
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Affiliation(s)
- Fei Sun
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
- Department of Neurosurgery, Xinhua Hospital Affiliated to Dalian University, Dalian, Liaoning, China
| | - Hongtao Lv
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Baozhi Feng
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Jiaao Sun
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Linyun Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Bin Dong
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
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Cao M, Ma L, Yan C, Wang H, Ran M, Chen Y, Wang X, Liang X, Chai L, Li X. Mouse Ocilrp2/Clec2i negatively regulates LPS-mediated IL-6 production by blocking Dap12-Syk interaction in macrophage. Front Immunol 2022; 13:984520. [PMID: 36300111 PMCID: PMC9589251 DOI: 10.3389/fimmu.2022.984520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/20/2022] [Indexed: 11/24/2022] Open
Abstract
C-type lectin Ocilrp2/Clec2i is widely expressed in dendritic cells, lymphokine-activated killer cells and activated T cells. Previous studies have shown that Ocilrp2 is an important regulator in the activation of T cells and NK cells. However, the role of Ocilrp2 in the inflammatory responses by activated macrophages is currently unknown. This study investigated the expression of inflammatory cytokines in LPS-induced macrophages from primary peritoneal macrophages silenced by specific siRNA target Ocilrp2. Ocilrp2 was significantly downregulated in macrophages via NF-κB and pathways upon LPS stimuli or VSV infection. Silencing Ocilrp2 resulted in the increased expression of IL-6 in LPS-stimulated peritoneal macrophages and mice. Moreover, IL-6 expression was reduced in LPS-induced Ocilrp2 over-expressing iBMDM cells. Furthermore, we found that Ocilrp2-related Syk activation is responsible for expressing inflammatory cytokines in LPS-stimulated macrophages. Silencing Ocilrp2 significantly promotes the binding of Syk to Dap12. Altogether, we identified the Ocilrp2 as a critical role in the TLR4 signaling pathway and inflammatory macrophages’ immune regulation, and added mechanistic insights into the crosstalk between TLR and Syk signaling.
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Affiliation(s)
- Mingya Cao
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
- Institute of Translational Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Lina Ma
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Chenyang Yan
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Han Wang
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Mengzhe Ran
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Ying Chen
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Xiao Wang
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Xiaonan Liang
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
| | - Lihui Chai
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
- Institute of Translational Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Lihui Chai, ; Xia Li,
| | - Xia Li
- Joint National Laboratory for Antibody Drug Engineering, The First Affiliated Hospital, School of Medicine, Henan University, Kaifeng, China
- Institute of Translational Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Lihui Chai, ; Xia Li,
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Clr-f expression regulates kidney immune and metabolic homeostasis. Sci Rep 2022; 12:4834. [PMID: 35318366 PMCID: PMC8940912 DOI: 10.1038/s41598-022-08547-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/09/2022] [Indexed: 11/25/2022] Open
Abstract
The C-type lectin-related protein, Clr-f, encoded by Clec2h in the mouse NK gene complex (NKC), is a member of a family of immune regulatory lectins that guide immune responses at distinct tissues of the body. Clr-f is highly expressed in the kidney; however, its activity in this organ is unknown. To assess the requirement for Clr-f in kidney health and function, we generated a Clr-f-deficient mouse (Clr-f−/−) by targeted deletions in the Clec2h gene. Mice lacking Clr-f exhibited glomerular and tubular lesions, immunoglobulin and C3 complement protein renal deposits, and significant abdominal and ectopic lipid accumulation. Whole kidney transcriptional profile analysis of Clr-f−/− mice at 7, 13, and 24 weeks of age revealed a dynamic dysregulation in lipid metabolic processes, stress responses, and inflammatory mediators. Examination of the immune contribution to the pathologies of Clr-f−/− mouse kidneys identified elevated IL-12 and IFNγ in cells of the tubulointerstitium, and an infiltrating population of neutrophils and T and B lymphocytes. The presence of these insults in a Rag1−/−Clr-f−/− background reveals that Clr-f−/− mice are susceptible to a T and B lymphocyte-independent renal pathogenesis. Our data reveal a role for Clr-f in the maintenance of kidney immune and metabolic homeostasis.
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Araúzo-Bravo MJ, Delic D, Gerovska D, Wunderlich F. Protective Vaccination Reshapes Hepatic Response to Blood-Stage Malaria of Genes Preferentially Expressed by NK Cells. Vaccines (Basel) 2020; 8:vaccines8040677. [PMID: 33202767 PMCID: PMC7712122 DOI: 10.3390/vaccines8040677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 02/04/2023] Open
Abstract
The role of natural killer (NK) cells in the liver as first-line post infectionem (p.i.) effectors against blood-stage malaria and their responsiveness to protective vaccination is poorly understood. Here, we investigate the effect of vaccination on NK cell-associated genes induced in the liver by blood-stage malaria of Plasmodium chabaudi. Female Balb/c mice were vaccinated at weeks 3 and 1 before being infected with 106P. chabaudi-parasitized erythrocytes. Genes preferentially expressed by NK cells were investigated in livers of vaccination-protected and non-protected mice on days 0, 1, 4, 8, and 11 p.i. using microarrays, qRT-PCR, and chromosome landscape analysis. Blood-stage malaria induces expression of specific genes in the liver at different phases of infection, i.e., Itga1 in expanding liver-resident NK (lrNK) cells, Itga2 in immigrating conventional NK (cNK) cells; Eomes and Tbx21 encoding transcription factors; Ncr1, Tnfsf10, Prf1, Gzma, Gzmb, Gzmc, Gzmm, and Gzmk encoding cytolytic effectors; natural killer gene complex (NKC)-localized genes encoding the NK cell receptors KLRG1, KLRK1, KLRAs1, 2, 5, 7, KLRD1, KLRC1, KLRC3, as well as the three receptors KLRB1A, KLRB1C, KLRB1F and their potential ligands CLEC2D and CLEC2I. Vaccination enhances this malaria-induced expression of genes, but impairs Gzmm expression, accelerates decline of Tnfsf10 and Clec2d expression, whereas it accelerates increased expression of Clec2i, taking a very similar time course as that of genes encoding plasma membrane proteins of erythroblasts, whose malaria-induced extramedullary generation in the liver is known to be accelerated by vaccination. Collectively, vaccination reshapes the response of the liver NK cell compartment to blood-stage malaria. Particularly, the malaria-induced expansion of lrNK cells peaking on day 4 p.i. is highly significantly (p < 0.0001) reduced by enhanced immigration of peripheral cNK cells, and KLRB1F:CLEC2I interactions between NK cells and erythroid cells facilitate extramedullary erythroblastosis in the liver, thus critically contributing to vaccination-induced survival of otherwise lethal blood-stage malaria of P. chabaudi.
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Affiliation(s)
- Marcos J. Araúzo-Bravo
- Group of Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, 20014 San Sebastián, Spain;
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
- TransBioNet Thematic Network of Excellence for Transitional Bioinformatics, Barcelona Supercomputing Center, 08034 Barcelona, Spain
- Correspondence: (M.J.A.-B.); (D.D.); Tel.: +34-943006108 (M.J.A.-B.); +49-735154143839 (D.D.)
| | - Denis Delic
- Boeringer Ingelheim Pharma, 88400 Biberach, Germany
- Correspondence: (M.J.A.-B.); (D.D.); Tel.: +34-943006108 (M.J.A.-B.); +49-735154143839 (D.D.)
| | - Daniela Gerovska
- Group of Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, 20014 San Sebastián, Spain;
| | - Frank Wunderlich
- Department of Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany;
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Neuss S, Bartel Y, Born C, Weil S, Koch J, Behrends C, Hoffmeister M, Steinle A. Cellular Mechanisms Controlling Surfacing of AICL Glycoproteins, Cognate Ligands of the Activating NK Receptor NKp80. THE JOURNAL OF IMMUNOLOGY 2018; 201:1275-1286. [PMID: 29980609 DOI: 10.4049/jimmunol.1800059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 06/08/2018] [Indexed: 01/03/2023]
Abstract
AICL glycoproteins are cognate activation-induced ligands of the C-type lectin-like receptor NKp80, which is expressed on virtually all mature human NK cells, and NKp80-AICL interaction stimulates NK cell effector functions such as cytotoxicity and cytokine secretion. Notably, AICL and NKp80 are encoded by adjacent genes in the NK gene complex and are coexpressed by human NK cells. Whereas AICL is intracellularly retained in resting NK cells, exposure of NK cells to proinflammatory cytokines results in AICL surfacing and susceptibility to NKp80-mediated NK fratricide. In this study, we characterize molecular determinants of AICL glycoproteins that cause intracellular retention, thereby controlling AICL surface expression. Cys87 residing within the C-type lectin-like domain not only ensures stable homodimerization of AICL glycoproteins by disulfide bonding, but Cys87 is also required for efficient cell surface expression of AICL homodimers and essential for AICL-NKp80 interaction. In contrast, cytoplasmic lysines act as negative regulators targeting AICL for proteasomal degradation. One atypical and three conventional N-linked glycosylation sites in the AICL C-type lectin-like domain critically impact maturation and surfacing of AICL, which is strictly dependent on glycosylation of at least one conventional glycosylation site. However, although the extent of conventional N-linked glycosylation positively correlates with AICL surface expression, the atypical glycosylation site impairs AICL surfacing. Stringent control of AICL surface expression by glycosylation is reflected by the pronounced interaction of AICL with calnexin and the impaired AICL expression in calnexin-deficient cells. Collectively, our data demonstrate that AICL expression and surfacing are tightly controlled by several independent cellular posttranslational mechanisms.
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Affiliation(s)
- Sebastian Neuss
- Institute for Molecular Medicine, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany
| | - Yvonne Bartel
- Institute for Molecular Medicine, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany
| | - Christina Born
- Institute for Molecular Medicine, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany
| | - Sandra Weil
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, 60596 Frankfurt am Main, Germany
| | - Joachim Koch
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, 60596 Frankfurt am Main, Germany
| | - Christian Behrends
- Institute of Biochemistry II, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany.,Munich Cluster for Systems Neurology, Ludwig Maximilian University of Munich, 80539 Munich, Germany; and
| | - Meike Hoffmeister
- Institute of Biochemistry II, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany.,Institute of Biochemistry, Brandenburg Medical School Theodor Fontane, 16816 Neuruppin, Germany
| | - Alexander Steinle
- Institute for Molecular Medicine, Goethe-University Frankfurt am Main, 60590 Frankfurt am Main, Germany;
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