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Control of human cytomegalovirus replication by liver resident natural killer cells. Nat Commun 2023; 14:1409. [PMID: 36918610 PMCID: PMC10014884 DOI: 10.1038/s41467-023-37181-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 03/06/2023] [Indexed: 03/15/2023] Open
Abstract
Natural killer cells are considered to be important for control of human cytomegalovirus- a major pathogen in immune suppressed transplant patients. Viral infection promotes the development of an adaptive phenotype in circulating natural killer cells that changes their anti-viral function. In contrast, less is understood how natural killer cells that reside in tissue respond to viral infection. Here we show natural killer cells resident in the liver have an altered phenotype in cytomegalovirus infected individuals and display increased anti-viral activity against multiple viruses in vitro and identify and characterise a subset of natural killer cells responsible for control. Crucially, livers containing natural killer cells with better capacity to control cytomegalovirus replication in vitro are less likely to experience viraemia post-transplant. Taken together, these data suggest that virally induced expansion of tissue resident natural killer cells in the donor organ can reduce the chance of viraemia post-transplant.
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2
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Zhou Y, Cheng L, Liu L, Li X. NK cells are never alone: crosstalk and communication in tumour microenvironments. Mol Cancer 2023; 22:34. [PMID: 36797782 PMCID: PMC9933398 DOI: 10.1186/s12943-023-01737-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 01/30/2023] [Indexed: 02/18/2023] Open
Abstract
Immune escape is a hallmark of cancer. The dynamic and heterogeneous tumour microenvironment (TME) causes insufficient infiltration and poor efficacy of natural killer (NK) cell-based immunotherapy, which becomes a key factor triggering tumour progression. Understanding the crosstalk between NK cells and the TME provides new insights for optimising NK cell-based immunotherapy. Here, we present new advances in direct or indirect crosstalk between NK cells and 9 specialised TMEs, including immune, metabolic, innervated niche, mechanical, and microbial microenvironments, summarise TME-mediated mechanisms of NK cell function inhibition, and highlight potential targeted therapies for NK-TME crosstalk. Importantly, we discuss novel strategies to overcome the inhibitory TME and provide an attractive outlook for the future.
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Affiliation(s)
- Yongqiang Zhou
- grid.32566.340000 0000 8571 0482The First School of Clinical Medicine, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000 China ,grid.412643.60000 0004 1757 2902Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, China ,Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
| | - Lu Cheng
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
| | - Lu Liu
- grid.412643.60000 0004 1757 2902Department of Pediatrics, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xun Li
- The First School of Clinical Medicine, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China. .,Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, China. .,Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China.
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3
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Tumor immunology. Clin Immunol 2023. [DOI: 10.1016/b978-0-12-818006-8.00003-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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4
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Hong B, Xia T, Ye CJ, Zhan Y, Yang R, Liu J, Li Y, Chen ZX, Yao W, Li K, Wang J, Dong KR, Dong R. Single-cell transcriptional profiling reveals the heterogeneity in embryonal rhabdomyosarcoma. Medicine (Baltimore) 2021; 100:e26775. [PMID: 34397824 PMCID: PMC8341243 DOI: 10.1097/md.0000000000026775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 06/27/2021] [Accepted: 07/01/2021] [Indexed: 01/06/2023] Open
Abstract
ABSTRACT Rhabdomyosarcoma is the most common soft tissue sarcoma in children, and embryonal rhabdomyosarcoma is the most typical type of rhabdomyosarcoma. The heterogeneity, etiology, and origin of embryonal rhabdomyosarcoma remain unknown.After obtaining the gene expression data of every cell in the tumor tissue by single-cell RNA sequencing, we used the Seurat package in R studio for quality control, analysis, and exploration of the data. All cells are divided into tumor cells and non-tumor cells, and we chose tumor cells by marker genes. Then, we repeated the process to cluster the tumor cells and divided the subgroups by their differentially expressed genes and gene ontology/Kyoto Encyclopedia of Genes and Genomes analysis. Additionally, Monocle 2 was used for pseudo-time analysis to obtain the evolution trajectory of cells in tumor tissues.Tumor cells were divided into 5 subgroups according to their functions, which were characterized by high proliferation, sensing and adaptation to oxygen availability, enhanced epigenetic modification, enhanced nucleoside phosphonic acid metabolism, and ossification. Evolution trajectory of cells in tumor tissues is obtained.We used pseudo-time analysis to distinguish between mesenchymal stem cells and fibroblasts, proved that embryonal rhabdomyosarcoma in the pelvic originated from skeletal muscle progenitor cells, showed the evolutionary trajectory of embryonal rhabdomyosarcoma, and improved the method of evaluating the degree of malignancy of embryonal rhabdomyosarcoma.
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Affiliation(s)
- Bo Hong
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Tian Xia
- Department of Orthopaedics, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Chun-Jing Ye
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Yong Zhan
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Ran Yang
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Jia Liu
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Yi Li
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Zhi-Xue Chen
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Wei Yao
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Kai Li
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Jia Wang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med X Clinical Stem Cell Research Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kui-Ran Dong
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
| | - Rui Dong
- Department of Pediatric Surgery, Children's Hospital of Fudan University, and Shanghai Key Laboratory of Birth Defect, Shanghai, China
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5
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Cochran AM, Kornbluth J. Extracellular Vesicles From the Human Natural Killer Cell Line NK3.3 Have Broad and Potent Anti-Tumor Activity. Front Cell Dev Biol 2021; 9:698639. [PMID: 34368150 PMCID: PMC8343581 DOI: 10.3389/fcell.2021.698639] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/30/2021] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells are critical mediators of immune function, responsible for rapid destruction of tumor cells. They kill primarily through the release of granules containing potent cytolytic molecules. NK cells also release these molecules within membrane-bound exosomes and microvesicles - collectively known as extracellular vesicles (EV). Here we report the characterization and anti-tumor function of EVs isolated from NK3.3 cells, a well described clonal normal human NK cell line. We show that NK3.3 EVs contain the cytolytic molecules perforin, granzymes A and B, and granulysin, and an array of common EV proteins. We previously reported that the E3 ubiquitin ligase, natural killer lytic-associated molecule (NKLAM), is localized to NK granules and is essential for maximal NK killing; here we show it is present in the membrane of NK3.3 EVs. NK3.3-derived EVs also carry multiple RNA species, including miRNAs associated with anti-tumor activity. We demonstrate that NK3.3 EVs inhibit proliferation and induce caspase-mediated apoptosis and cell death of an array of both hematopoietic and non-hematopoietic tumor cell lines. This effect is tumor cell specific; normal cells are unaffected by EV treatment. By virtue of their derivation from a healthy donor and ability to be expanded to large numbers, NK3.3 EVs have the potential to be an effective, safe, and universal immunotherapeutic agent.
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Affiliation(s)
- Allyson M. Cochran
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Jacki Kornbluth
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO, United States
- St. Louis VA Medical Center, St. Louis, MO, United States
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6
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Zhang Y, Liu Q, Yang S, Liao Q. CD58 Immunobiology at a Glance. Front Immunol 2021; 12:705260. [PMID: 34168659 PMCID: PMC8218816 DOI: 10.3389/fimmu.2021.705260] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 05/24/2021] [Indexed: 01/12/2023] Open
Abstract
The glycoprotein CD58, also known as lymphocyte-function antigen 3 (LFA-3), is a costimulatory receptor distributed on a broad range of human tissue cells. Its natural ligand CD2 is primarily expressed on the surface of T/NK cells. The CD2-CD58 interaction is an important component of the immunological synapse (IS) that induces activation and proliferation of T/NK cells and triggers a series of intracellular signaling in T/NK cells and target cells, respectively, in addition to promoting cell adhesion and recognition. Furthermore, a soluble form of CD58 (sCD58) is also present in cellular supernatant in vitro and in local tissues in vivo. The sCD58 is involved in T/NK cell-mediated immune responses as an immunosuppressive factor by affecting CD2-CD58 interaction. Altered accumulation of sCD58 may lead to immunosuppression of T/NK cells in the tumor microenvironment, allowing sCD58 as a novel immunotherapeutic target. Recently, the crucial roles of costimulatory molecule CD58 in immunomodulation seem to be reattracting the interests of investigators. In particular, the CD2-CD58 interaction is involved in the regulation of antiviral responses, inflammatory responses in autoimmune diseases, immune rejection of transplantation, and immune evasion of tumor cells. In this review, we provide a comprehensive summary of CD58 immunobiology.
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Affiliation(s)
- Yalu Zhang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Qiaofei Liu
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Sen Yang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Quan Liao
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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7
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Xia M, Wu Q, Chen P, Qian C. Regulatory T Cell-Related Gene Biomarkers in the Deterioration of Atherosclerosis. Front Cardiovasc Med 2021; 8:661709. [PMID: 34095251 PMCID: PMC8172618 DOI: 10.3389/fcvm.2021.661709] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/07/2021] [Indexed: 01/16/2023] Open
Abstract
Background: Regulatory T cells (Tregs) have shown to be protective against the development of atherosclerosis, a major pathological cause for cardiovascular events. Here, we aim to explore the roles of Tregs-related genes in atherosclerosis deterioration. Methods and Results: We downloaded the gene expression profile of 29 atherosclerotic samples from the Gene Expression Omnibus database with an accession number of GSE28829. The abundance of Tregs estimated by the CIBERSORT algorithm was negatively correlated with the atherosclerotic stage. Using the limma test and correlation analysis, a total of 159 differentially expressed Tregs-related genes (DETregRGs) between early and advanced atherosclerotic plaques were documented. Functional annotation analysis using the DAVID tool indicated that the DETregRGs were mainly enriched in inflammatory responses, immune-related mechanisms, and pathways such as complement and coagulation cascades, platelet activation, leukocyte trans-endothelial migration, vascular smooth muscle contraction, and so on. A protein-protein interaction network of the DETregRGs was then constructed, and five hub genes (PTPRC, C3AR1, CD53, TLR2, and CCR1) were derived from the network with node degrees ≥20. The expression patterns of these hub DETregRGs were further validated in several independent datasets. Finally, a single sample scoring method was used to build a gene signature for the five DETregRGs, which could distinguish patients with myocardial infarction from those with stable coronary disease. Conclusion: The results of this study will improve our understanding about the Tregs-associated molecular mechanisms in the progression of atherosclerosis and facilitate the discovery of novel biomarkers for acute cardiovascular events.
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Affiliation(s)
- Meng Xia
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qingmeng Wu
- Healthcare-Associated Infections Control Center, The Affiliated Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Pengfei Chen
- Department of Gastroenterology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
| | - Cheng Qian
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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8
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Binder C, Sellberg F, Cvetkovski F, Berg S, Berglund E, Berglund D. Siplizumab Induces NK Cell Fratricide Through Antibody-Dependent Cell-Mediated Cytotoxicity. Front Immunol 2021; 12:599526. [PMID: 33643309 PMCID: PMC7904868 DOI: 10.3389/fimmu.2021.599526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 01/05/2021] [Indexed: 12/17/2022] Open
Abstract
The glycoprotein CD2 is expressed on T and NK cells and contributes to cell-cell conjugation, agonistic signaling and actin cytoskeleton rearrangement. CD2 has previously been shown to have an important function in natural NK cell cytotoxicity but to be expendable in antibody-mediated cytotoxicity. Siplizumab is a monoclonal anti-CD2 IgG1 antibody that is currently undergoing clinical trials in the field of transplantation. This study investigated the effect of CD2 binding and Fc γ receptor binding by siplizumab (Fc-active) and Fc-silent anti-CD2 monoclonal antibodies in allogeneic mixed lymphocyte reaction and autologous lymphocyte culture. Further, induction of NK cell fratricide and inhibition of natural cytotoxicity as well as antibody-dependent cytotoxicity by these agents were assessed. Blockade of CD2 via monoclonal antibodies in the absence of Fc γ receptor binding inhibited NK cell activation in allogeneic mixed lymphocyte reaction. In contrast, siplizumab increased NK cell activation in both mixed lymphocyte reaction and autologous lymphocyte culture due to FcγRIIIA binding. However, experiments using purified NK cells did not show an inhibitory effect of CD2 blockade on natural cytotoxicity or antibody-dependent cytotoxicity. Lastly, it was shown that siplizumab induces NK cell fratricide. Concluding, siplizumab is a promising biopharmaceutical drug candidate for depletion of T and NK cells with minimal off-target effects.
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Affiliation(s)
- Christian Binder
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
- Research and Development, ITB-Med AB, Stockholm, Sweden
| | - Felix Sellberg
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
- Research and Development, ITB-Med AB, Stockholm, Sweden
| | | | - Stefan Berg
- Research and Development, ITB-Med AB, Stockholm, Sweden
| | - Erik Berglund
- Research and Development, ITB-Med AB, Stockholm, Sweden
- Division of Transplantation Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - David Berglund
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
- Research and Development, ITB-Med AB, Stockholm, Sweden
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9
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Naujoks W, Quandt D, Hauffe A, Kielstein H, Bähr I, Spielmann J. Characterization of Surface Receptor Expression and Cytotoxicity of Human NK Cells and NK Cell Subsets in Overweight and Obese Humans. Front Immunol 2020; 11:573200. [PMID: 33101297 PMCID: PMC7546782 DOI: 10.3389/fimmu.2020.573200] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022] Open
Abstract
Obesity is associated with an increased risk for several cancer types and an altered phenotype and functionality of natural killer (NK) cells. This study aimed to investigate the association of overweight and obesity with NK cell functions and receptor expression profiles in humans. Therefore, peripheral blood mononuclear cells were isolated from normal weight, overweight, and obese healthy blood donors. In depth analysis of immune cell populations and 23 different surface markers, including NK cell receptors, NK-cell-related markers as well as functional intracellular markers on total NK cells and NK subgroups were performed by multicolor flow cytometry. The data revealed a decreased expression of the activating NK cell receptors KIR2DS4 and NKp46 as well as an increased expression of the inhibitory NK cell receptors NKG2A and Siglec-7 in overweight and obese compared to normal weight individuals. Additionally, the expression of the adhesion molecule CD62L and the maturation and differentiation marker CD27 was downregulated in NK cells of overweight and obese subjects. Furthermore, the cytotoxicity of NK cells against colorectal cancer cells was decreased in overweight and obese subjects. Investigations on underlying killing mechanisms demonstrated a reduced TRAIL expression on NK cells of obese subjects suggesting an impaired death receptor pathway in obesity. The present study gives new insights into an impaired functionality and phenotype of NK cells and NK cell subsets in overweight and obesity. These phenotypic alterations and dysfunction of NK cells might be an explanation for the increased cancer risk in obesity.
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Affiliation(s)
- Wiebke Naujoks
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Dagmar Quandt
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Regenerative Medicine Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, School of Medicine, College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, Galway, Ireland
| | - Anja Hauffe
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Heike Kielstein
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Ina Bähr
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Julia Spielmann
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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10
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Zhao B, Wang D, Liu Y, Zhang X, Wan Z, Wang J, Su T, Duan L, Wang Y, Zhang Y, Zhao Y. Six-Gene Signature Associated with Immune Cells in the Progression of Atherosclerosis Discovered by Comprehensive Bioinformatics Analyses. Cardiovasc Ther 2020; 2020:1230513. [PMID: 32821283 PMCID: PMC7416237 DOI: 10.1155/2020/1230513] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/15/2020] [Accepted: 06/29/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND As a multifaceted disease, atherosclerosis is often characterized by the formation and accumulation of plaque anchored to the inner wall of the arteries and causes some cardiovascular diseases and vascular embolism. Numerous studies have reported on the pathogenesis of atherosclerosis. However, fewer studies focused on both genes and immune cells, and the correlation of genes and immune cells was evaluated via comprehensive bioinformatics analyses. METHODS 29 samples of atherosclerosis-related gene expression profiling, including 16 human advanced atherosclerosis plaque (AA) and 13 human early atherosclerosis plaque (EA) samples from the Gene Expression Omnibus (GEO) database, were analyzed to get differentially expressed genes (DEGs) and the construction of protein and protein interaction (PPI) networks. Besides, we detected the relative fraction of 22 immune cell types in atherosclerosis by using the deconvolution algorithm of "cell type identification by estimating relative subsets of RNA transcripts (CIBERSORT)." Ultimately, based on the significantly changed types of immune cells, we executed the correlation analysis between DEGs and immune cells to discover the potential genes and pathways associated with immune cells. RESULTS We identified 17 module genes and 6 types of significantly changed immune cells. Correlation analysis showed that the relative percentage of T cell CD8 has negative correlation with the C1QB expression (R = -0.63, p = 0.02), and the relative percentage of macrophage M2 has positive correlation with the CD86 expression (R = 0.57, p = 0.041) in EA. Meanwhile, four gene expressions (CD53, C1QC, NCF2, and ITGAM) have a high correlation with the percentages of T cell CD8 and macrophages (M0 and M2) in AA samples. CONCLUSIONS In this study, we suggested that the progression of atherosclerosis might be related to CD86, C1QB, CD53, C1QC, NCF2, and ITGAM and that it plays a role in regulating immune-competent cells such as T cell CD8 and macrophages M0 and M2. These results will enable studies of the potential genes associated with immune cells in the progression of atherosclerosis, as well as provide insight for discovering new treatments and drugs.
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Affiliation(s)
- Bin Zhao
- Department of Oncology and Vascular Interventional Radiology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, Fujian, China
| | - Dan Wang
- School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yanling Liu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian, China
| | - Xiaohong Zhang
- Department of Oncology and Vascular Interventional Radiology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, Fujian, China
| | - Zheng Wan
- Department of Oncology and Vascular Interventional Radiology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, Fujian, China
| | - Jinling Wang
- Department of Emergency, Zhongshan Hospital, Xiamen University, Xiamen, Fujian, China
| | - Ting Su
- School of Medicine, Xiamen University, Xiamen, Fujian, China
- Department of Ophthalmology, Howe Laboratory, Massachusetts Eye and Ear, Harvard Medical School, Boston 02114, USA
| | - Linshan Duan
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian, China
| | - Yan Wang
- Medical Reproductive Auxiliary Specialty, People's Hospital of Jiuquan City, Gansu, China
| | - Yuehua Zhang
- Laboratory Animal Center, Xiamen University, Xiamen, Fujian, China
| | - Yilin Zhao
- Department of Oncology and Vascular Interventional Radiology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, Fujian, China
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11
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Binder C, Cvetkovski F, Sellberg F, Berg S, Paternina Visbal H, Sachs DH, Berglund E, Berglund D. CD2 Immunobiology. Front Immunol 2020; 11:1090. [PMID: 32582179 PMCID: PMC7295915 DOI: 10.3389/fimmu.2020.01090] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 05/05/2020] [Indexed: 01/21/2023] Open
Abstract
The glycoprotein CD2 is a costimulatory receptor expressed mainly on T and NK cells that binds to LFA3, a cell surface protein expressed on e.g., antigen-presenting cells. CD2 has an important role in the formation and organization of the immunological synapse that is formed between T cells and antigen-presenting cells upon cell-cell conjugation and associated intracellular signaling. CD2 expression is upregulated on memory T cells as well as activated T cells and plays an important role in activation of memory T cells despite the coexistence of several other costimulatory pathways. Anti-CD2 monoclonal antibodies have been shown to induce immune modulatory effects in vitro and clinical studies have proven the safety and efficacy of CD2-targeting biologics. Investigators have highlighted that the lack of attention to the CD2/LFA3 costimulatory pathway is a missed opportunity. Overall, CD2 is an attractive target for monoclonal antibodies intended for treatment of pathologies characterized by undesired T cell activation and offers an avenue to more selectively target memory T cells while favoring immune regulation.
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Affiliation(s)
- Christian Binder
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden.,Research and Development, ITB-Med AB, Stockholm, Sweden
| | | | - Felix Sellberg
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden.,Research and Development, ITB-Med AB, Stockholm, Sweden
| | - Stefan Berg
- Research and Development, ITB-Med AB, Stockholm, Sweden
| | - Horacio Paternina Visbal
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden.,Research and Development, ITB-Med AB, Stockholm, Sweden
| | - David H Sachs
- Research and Development, ITB-Med AB, Stockholm, Sweden.,Department of Medicine, Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, United States
| | - Erik Berglund
- Research and Development, ITB-Med AB, Stockholm, Sweden.,Division of Transplantation Surgery, CLINTEC, Karolinska Institute, and Department of Transplantation Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - David Berglund
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden.,Research and Development, ITB-Med AB, Stockholm, Sweden
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12
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Del Zotto G, Antonini F, Pesce S, Moretta F, Moretta L, Marcenaro E. Comprehensive Phenotyping of Human PB NK Cells by Flow Cytometry. Cytometry A 2020; 97:891-899. [PMID: 32198974 DOI: 10.1002/cyto.a.24001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/13/2020] [Accepted: 02/21/2020] [Indexed: 12/14/2022]
Abstract
The NK cell compartment provides powerful innate defenses against virus-infected and tumor cells. Specific NK cell receptors control this process and maintain the immune system homeostasis and prevent autoimmunity. A wide variety of NK cell subsets with different functional capabilities exist and this reflects not only the different maturation stages of NK cells but also different microenvironments in which they can operate. In this review, we will give an overview on the various NK cell subsets present in peripheral blood of healthy donors in order to clearly and univocally identify them on the basis of their phenotypic traits using flow cytometry. © 2020 International Society for Advancement of Cytometry.
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Affiliation(s)
- Genny Del Zotto
- Core Facilities, Area Aggregazione Servizi e Laboratori Diagnostici, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Francesca Antonini
- Core Facilities, Area Aggregazione Servizi e Laboratori Diagnostici, IRCCS Istituto G. Gaslini, Genoa, Italy
| | - Silvia Pesce
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Francesca Moretta
- Department of Laboratory Medicine, IRCCS Sacro Cuore Don Calabria Hospital, Negrar, Italy
| | - Lorenzo Moretta
- Department of Immunology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Emanuela Marcenaro
- Department of Experimental Medicine, University of Genoa, Genoa, Italy.,Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
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Pugh J, Nemat-Gorgani N, Djaoud Z, Guethlein LA, Norman PJ, Parham P. In vitro education of human natural killer cells by KIR3DL1. Life Sci Alliance 2019; 2:2/6/e201900434. [PMID: 31723004 PMCID: PMC6856763 DOI: 10.26508/lsa.201900434] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 11/01/2019] [Accepted: 11/04/2019] [Indexed: 11/29/2022] Open
Abstract
Using NK cells isolated from individuals who lack the Bw4 epitope on HLA-B, Pugh et al reveal that KIR3DL1+ NK cells can be educated in vitro by co-culturing them with target cells that display the missing epitope. During development, NK cells are “educated” to respond aggressively to cells with low surface expression of HLA class I, a hallmark of malignant and infected cells. The mechanism of education involves interactions between inhibitory killer immunoglobulin–like receptors (KIRs) and specific HLA epitopes, but the details of this process are unknown. Because of the genetic diversity of HLA class I genes, most people have NK cells that are incompletely educated, representing an untapped source of human immunity. We demonstrate how mature peripheral KIR3DL1+ human NK cells can be educated in vitro. To accomplish this, we trained NK cells expressing the inhibitory KIR3DL1 receptor by co-culturing them with target cells that expressed its ligand, Bw4+HLA-B. After this training, KIR3DL1+ NK cells increased their inflammatory and lytic responses toward target cells lacking Bw4+HLA-B, as though they had been educated in vivo. By varying the conditions of this basic protocol, we provide mechanistic and translational insights into the process NK cell education.
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Affiliation(s)
- Jason Pugh
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Neda Nemat-Gorgani
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Zakia Djaoud
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Lisbeth A Guethlein
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Paul J Norman
- Division of Biomedical Informatics and Personalized Medicine, Department of Immunology, School of Medicine, University of Colorado Denver, Denver, CO, USA
| | - Peter Parham
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, USA
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Botzman M, Gat-Viks I. Significant common environmental effects on leukocyte subpopulations. PLoS One 2018; 13:e0196193. [PMID: 29689083 PMCID: PMC5915319 DOI: 10.1371/journal.pone.0196193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 04/09/2018] [Indexed: 11/19/2022] Open
Abstract
Major efforts are invested in the analysis of phenotypic variation in a population of individuals. While many of these studies focus on the genetic basis of phenotypic variation via measurements of DNA polymorphic sites, the environmental effects are still elusive. Here we propose a methodology, called CCCE ('Cell Composition Common Environment'), to identify environmental effects on the composition of immune cell functionalities. Specifically, CCCE is focused on the common experiences that are shared between siblings (the 'common environment'), designed to correct for cell subpopulation heterogeneity, and is based on a multicolor flow cytometry analysis across a large cohort of human monozygotic and dizygotic twins. We demonstrate that the CCCE methodology can provide insights on the relations between common environmental effects and the heterogenic functions of several immune cell types, such as NK cells effector functions and coagulation-related capabilities of monocytes. The software described in this article is available at http://csgi.tau.ac.il/CCCE.
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Affiliation(s)
- Maya Botzman
- Department of Cell Research and Immunology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Irit Gat-Viks
- Department of Cell Research and Immunology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
- * E-mail:
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Tardivel M, Bégard S, Bousset L, Dujardin S, Coens A, Melki R, Buée L, Colin M. Tunneling nanotube (TNT)-mediated neuron-to neuron transfer of pathological Tau protein assemblies. Acta Neuropathol Commun 2016; 4:117. [PMID: 27809932 PMCID: PMC5096005 DOI: 10.1186/s40478-016-0386-4] [Citation(s) in RCA: 191] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 10/20/2016] [Indexed: 11/24/2022] Open
Abstract
A given cell makes exchanges with its neighbors through a variety of means ranging from diffusible factors to vesicles. Cells use also tunneling nanotubes (TNTs), filamentous-actin-containing membranous structures that bridge and connect cells. First described in immune cells, TNTs facilitate HIV-1 transfer and are found in various cell types, including neurons. We show that the microtubule-associated protein Tau, a key player in Alzheimer’s disease, is a bona fide constituent of TNTs. This is important because Tau appears beside filamentous actin and myosin 10 as a specific marker of these fine protrusions of membranes and cytosol that are difficult to visualize. Furthermore, we observed that exogenous Tau species increase the number of TNTs established between primary neurons, thereby facilitating the intercellular transfer of Tau fibrils. In conclusion, Tau may contribute to the formation and function of the highly dynamic TNTs that may be involved in the prion-like propagation of Tau assemblies.
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16
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Mahnke YD, Beddall MH, Roederer M. OMIP-029: Human NK-cell phenotypization. Cytometry A 2015; 87:986-8. [DOI: 10.1002/cyto.a.22728] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 07/06/2015] [Accepted: 07/10/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Yolanda D. Mahnke
- ImmunoTechnology Section; Vaccine Research Center, NIAID, NIH; Bethesda Maryland
| | - Margaret H. Beddall
- ImmunoTechnology Section; Vaccine Research Center, NIAID, NIH; Bethesda Maryland
| | - Mario Roederer
- ImmunoTechnology Section; Vaccine Research Center, NIAID, NIH; Bethesda Maryland
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Angelo LS, Banerjee PP, Monaco-Shawver L, Rosen JB, Makedonas G, Forbes LR, Mace EM, Orange JS. Practical NK cell phenotyping and variability in healthy adults. Immunol Res 2015; 62:341-56. [PMID: 26013798 PMCID: PMC4470870 DOI: 10.1007/s12026-015-8664-y] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Human natural killer (NK) cells display a wide array of surface and intracellular markers that indicate various states of differentiation and/or levels of effector function. These NK cell subsets exist simultaneously in peripheral blood and may vary among individuals. We examined variety among selected NK cell receptors expressed by NK cells from normal donors, as well as the distribution of select NK cell subsets and NK cell receptor expression over time in several individual donors. Peripheral blood mononuclear cells were evaluated using flow cytometry via fluorochrome-conjugated antibodies against a number of NK cell receptors. Results were analyzed for both mean fluorescence intensity (MFI) and the percent positive cells for each receptor. CD56(bright) and CD56(dim) NK cell subsets were also considered separately, as was variation in receptor expression in NK cell subsets over time in selected individuals. Through this effort, we provide ranges of NK cell surface receptor expression for a local adult population as well as provide insight into intra-individual variation.
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Affiliation(s)
- Laura S. Angelo
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
| | - Pinaki P. Banerjee
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
| | - Linda Monaco-Shawver
- Children’s Hospital of Philadelphia Research Institute, 3615 Civic Center Boulevard, Philadelphia, PA USA 19104
| | - Joshua B. Rosen
- Drexel University College of Medicine, 245 N. 15 Street, Philadelphia, PA USA 19102
| | - George Makedonas
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
| | - Lisa R. Forbes
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
| | - Emily M. Mace
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
| | - Jordan S. Orange
- Center for Human Immunobiology, Department of Allergy, Immunology and Rheumatology, The Feigin Center, Texas Children’s Hospital, 1102 Bates Street, Suite 330, Houston, TX, USA 77030 and Baylor College of Medicine
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Use of Alefacept for Preconditioning in Multiply Transfused Pediatric Patients with Nonmalignant Diseases. Biol Blood Marrow Transplant 2015; 21:1845-52. [PMID: 26095669 DOI: 10.1016/j.bbmt.2015.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/04/2015] [Indexed: 12/20/2022]
Abstract
Transfusion-related alloimmunization is a potent barrier to the engraftment of allogeneic hematopoietic stem cells in patients with nonmalignant diseases (NMDs). Memory T cells, which drive alloimmunization, are relatively resistant to commonly used conditioning agents. Alefacept, a recombinant leukocyte function antigen-3/IgG1 fusion protein, targets CD2 and selectively depletes memory versus naive T cells. Three multiply transfused pediatric patients with NMD received a short course of high-dose i.v. alefacept (.25 mg/kg/dose on days -40 and -9 and .5 mg/kg/dose on days -33, -26, -19, and -12) before undergoing unrelated allogeneic transplant in the setting of reduced-intensity pretransplant conditioning and calcineurin inhibitor-based post-transplant graft-versus-host disease (GVHD) prophylaxis. Alefacept infusions were well tolerated in all patients. Peripheral blood flow cytometry was performed at baseline and during and after alefacept treatment. As expected, after the 5 weekly alefacept doses, each patient demonstrated selective loss of CD2(hi)/CCR7(-)/CD45RA(-) effector memory (Tem) and CD2(hi)/CCR7(+)/CD45RA(-) central memory (Tcm) CD4(+) and CD8(+) T cells with relative preservation of the CD2(lo) Tem and Tcm subpopulations. In addition, depletion of CD2(+) natural killer (NK) cells also occurred. Neutrophil recovery was rapid, and all 3 patients had 100% sorted (CD3/CD33) peripheral blood donor chimerism by day +100. Immune reconstitution (by absolute neutrophil, monocyte, and lymphocyte counts) was comparable with a cohort of historical control patients. All 3 patients developed GVHD but are all now off immune suppression and >2 years post-transplant with stable full-donor engraftment. These results suggest that alefacept at higher dosing can deplete both memory T cells and NK cells and that incorporating CD2-targeted depletion into a reduced-intensity transplant regimen is feasible and safe in heavily transfused patients.
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Mace EM, Dongre P, Hsu HT, Sinha P, James AM, Mann SS, Forbes LR, Watkin LB, Orange JS. Cell biological steps and checkpoints in accessing NK cell cytotoxicity. Immunol Cell Biol 2014; 92:245-55. [PMID: 24445602 PMCID: PMC3960583 DOI: 10.1038/icb.2013.96] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 11/06/2013] [Indexed: 12/11/2022]
Abstract
Natural killer (NK) cell-mediated cytotoxicity is governed by the formation of a lytic immune synapse in discrete regulated steps, which give rise to an extensive array of cellular checkpoints in accessing NK cell-mediated cytolytic defense. Appropriate progression through these cell biological steps is critical for the directed secretion of specialized secretory lysosomes and subsequent target cell death. Here we highlight recent discoveries in the formation of the NK cell cytolytic synapse as well as the molecular steps and cell biological checkpoints required for this essential host defense process.
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Affiliation(s)
- Emily M Mace
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Prachi Dongre
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Hsiang-Ting Hsu
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Papiya Sinha
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | | | - Shaina S Mann
- Case Western Reserve Medical School, Cleveland, OH, USA
| | - Lisa R Forbes
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Levi B Watkin
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
| | - Jordan S Orange
- Center for Human Immunobiology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX, USA
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Zhang J, Zhang Y. Membrane nanotubes: novel communication between distant cells. SCIENCE CHINA-LIFE SCIENCES 2013; 56:994-9. [PMID: 24008389 DOI: 10.1007/s11427-013-4548-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 07/24/2013] [Indexed: 10/26/2022]
Abstract
The many kinds of cell structures involved in cell-cell communication include tight junction, adherens junction and gap junction, but almost all are between adjacent cells. Recently, a general and dynamic membrane tether, termed tunneling nanotubes or membrane nanotubes (MNTs), was discovered to be involved in communication between distant cells. By facilitating intercellular communication, MNTs contribute to many biological functions and pathologic changes in cells. Many works have revealed the structure, formation and functional properties of MNTs. However, as novel structures, further research is needed.
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Affiliation(s)
- Jianghui Zhang
- Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides of Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Institute of Vascular Medicine of Peking University Third Hospital, Beijing, 100191, China
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21
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Luo C, Qu H, Ma J, Wang J, Li C, Yang C, Hu X, Li N, Shu D. Genome-wide association study of antibody response to Newcastle disease virus in chicken. BMC Genet 2013; 14:42. [PMID: 23663563 PMCID: PMC3654938 DOI: 10.1186/1471-2156-14-42] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 05/06/2013] [Indexed: 11/21/2022] Open
Abstract
Background Since the first outbreak in Indonesia in 1926, Newcastle disease has become one of the most common and contagious bird diseases throughout the world. To date, enhancing host antibody response by vaccination remains the most efficient strategy to control outbreaks of Newcastle disease. Antibody response plays an important role in host resistance to Newcastle disease, and selection for antibody response can effectively improve disease resistance in chickens. However, the molecular basis of the variation in antibody response to Newcastle disease virus (NDV) is not clear. The aim of this study was to detect genes modulating antibody response to NDV by a genome-wide association study (GWAS) in chickens. Results To identify genes or chromosomal regions associated with antibody response to NDV after immunization, a GWAS was performed using 39,833 SNP markers in a chicken F2 resource population derived from a cross between two broiler lines that differed in their resistance. Two SNP effects reached 5% Bonferroni genome-wide significance (P<1.26×10-6). These two SNPs, rs15354805 and rs15355555, were both on chicken (Gallus gallus) chromosome 1 and spanned approximately 600 Kb, from 100.4 Mb to 101.0 Mb. Rs15354805 is in intron 7 of the chicken Roundabout, axon guidance receptor, homolog 2 (ROBO2) gene, and rs15355555 is located about 243 Kb upstream of ROBO2. Rs15354805 explained 5% of the phenotypic variation in antibody response to NDV, post immunization, in chickens. Rs15355555 had a similar effect as rs15354805 because of its linkage disequilibrium with rs15354805 (r2=0.98). Conclusion The region at about 100 Mb from the proximal end of chicken chromosome 1, including the ROBO1 and ROBO2 genes, has a strong effect on the antibody response to the NDV in chickens. This study paves the way for further research on the host immune response to NDV.
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Affiliation(s)
- Chenglong Luo
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, 1 Dafeng 1st Street, Wushan, Tianhe District, Guangzhou 510640, Guangdong, China
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