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Hsieh MJ, Lin JT, Chuang YC, Lin CC, Lo YS, Ho HY, Chen MK. Limocitrin increases cytotoxicity of KHYG-1 cells against K562 cells by modulating MAPK pathway. ENVIRONMENTAL TOXICOLOGY 2023; 38:2939-2951. [PMID: 37584500 DOI: 10.1002/tox.23929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/21/2023] [Accepted: 07/29/2023] [Indexed: 08/17/2023]
Abstract
Natural killer (NK) cells are gaining popularity in the field of cancer immunotherapy. The present study was designed to investigate the effect of a natural flavonol compound limocitrin in increasing cytotoxicity of a permanent NK leukemia cell line KHYG-1 against an aggressive leukemia cell line K562. The findings revealed that limocitrin increased the expressions of cytolytic molecules perforin, granzymes A and B, and granulysin in KHYG-1 cells by inducing phosphorylation of transcription factor CREB, leading to increased lysis of K562 cells. Mechanistically, limocitrin was found to increase the expressions of t-Bid, cleaved caspase 3, and cleaved PARP to induce K562 cell apoptosis. Moreover, limocitrin reduced the expressions of SET and Ape1 to inhibit DNA repair mechanism, leading to caspase-independent K562 cell death. At the molecular level, limocitrin was found to increase the phosphorylation of ERK, p38, and JNK to increase granzyme B expression in KHYG-1 cells. Taken together, the study indicates that limocitrin increases cytotoxicity of NK cells against a range of cancer cells.
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Affiliation(s)
- Ming-Ju Hsieh
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
- Doctoral Program in Tissue Engineering and Regenerative Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Jen-Tsun Lin
- Division of Hematology and Oncology, Department of Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Yi-Ching Chuang
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Chia-Chieh Lin
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Yu-Sheng Lo
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Hsin-Yu Ho
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Mu-Kuan Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
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2
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Boopathi E, Den RB, Thangavel C. Innate Immune System in the Context of Radiation Therapy for Cancer. Cancers (Basel) 2023; 15:3972. [PMID: 37568788 PMCID: PMC10417569 DOI: 10.3390/cancers15153972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Radiation therapy (RT) remains an integral component of modern oncology care, with most cancer patients receiving radiation as a part of their treatment plan. The main goal of ionizing RT is to control the local tumor burden by inducing DNA damage and apoptosis within the tumor cells. The advancement in RT, including intensity-modulated RT (IMRT), stereotactic body RT (SBRT), image-guided RT, and proton therapy, have increased the efficacy of RT, equipping clinicians with techniques to ensure precise and safe administration of radiation doses to tumor cells. In this review, we present the technological advancement in various types of RT methods and highlight their clinical utility and associated limitations. This review provides insights into how RT modulates innate immune signaling and the key players involved in modulating innate immune responses, which have not been well documented earlier. Apoptosis of cancer cells following RT triggers immune systems that contribute to the eradication of tumors through innate and adoptive immunity. The innate immune system consists of various cell types, including macrophages, dendritic cells, and natural killer cells, which serve as key mediators of innate immunity in response to RT. This review will concentrate on the significance of the innate myeloid and lymphoid lineages in anti-tumorigenic processes triggered by RT. Furthermore, we will explore essential strategies to enhance RT efficacy. This review can serve as a platform for researchers to comprehend the clinical application and limitations of various RT methods and provides insights into how RT modulates innate immune signaling.
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Affiliation(s)
- Ettickan Boopathi
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Robert B. Den
- Department of Radiation Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| | - Chellappagounder Thangavel
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Department of Radiation Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA;
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Keenum MC, Chatterjee P, Atalis A, Pandey B, Jimenez A, Roy K. Single-cell epitope-transcriptomics reveal lung stromal and immune cell response kinetics to nanoparticle-delivered RIG-I and TLR4 agonists. Biomaterials 2023; 297:122097. [PMID: 37001347 PMCID: PMC10192313 DOI: 10.1016/j.biomaterials.2023.122097] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023]
Abstract
Lung-resident and circulatory lymphoid, myeloid, and stromal cells, expressing various pattern recognition receptors (PRRs), detect pathogen- and danger-associated molecular patterns (PAMPs/DAMPs), and defend against respiratory pathogens and injuries. Here, we report the early responses of murine lungs to nanoparticle-delivered PAMPs, specifically the retinoic acid-inducible gene I (RIG-I) agonist poly-U/UC (PUUC), with or without the TLR4 agonist monophosphoryl lipid A (MPLA). Using cellular indexing of transcriptomes and epitopes by sequencing (CITE-seq), we characterized the responses at 4 and 24 h after intranasal administration. Within 4 h, ribosome-associated transcripts decreased in both stromal and immune cells, followed by widespread interferon-stimulated gene (ISG) expression. Using RNA velocity, we show that lung-neutrophils dynamically regulate the synthesis of cytokines like CXCL-10, IL-1α, and IL-1β. Co-delivery of MPLA and PUUC increased chemokine synthesis and upregulated antimicrobial binding proteins targeting iron, manganese, and zinc in many cell types, including fibroblasts, endothelial cells, and epithelial cells. Overall, our results elucidate the early PAMP-induced cellular responses in the lung and demonstrate that stimulation of the RIG-I pathway, with or without TLR4 agonists, induces a ubiquitous microbial defense state in lung stromal and immune cells. Nanoparticle-delivered combination PAMPs may have applications in intranasal antiviral and antimicrobial therapies and prophylaxis.
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Affiliation(s)
- M Cole Keenum
- Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta, GA, USA
| | - Paramita Chatterjee
- Marcus Center for Therapeutic Cell Characterization and Manufacturing Georgia Institute of Technology, Atlanta, GA, USA
| | - Alexandra Atalis
- Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta, GA, USA
| | - Bhawana Pandey
- Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta, GA, USA
| | - Angela Jimenez
- Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta, GA, USA
| | - Krishnendu Roy
- Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta, GA, USA; Marcus Center for Therapeutic Cell Characterization and Manufacturing Georgia Institute of Technology, Atlanta, GA, USA; The Parker H. Petit Institute for Bioengineering and Biosciences Georgia Institute of Technology, Atlanta, GA, USA.
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4
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Feng YB, Chen L, Chen FX, Yang Y, Chen GH, Zhou ZH, Xu CF. Immunopotentiation effects of apigenin on NK cell proliferation and killing pancreatic cancer cells. Int J Immunopathol Pharmacol 2023; 37:3946320231161174. [PMID: 36848930 PMCID: PMC9974612 DOI: 10.1177/03946320231161174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Abstract
Apigenin is a kind of flavonoid with many beneficial biological effects. It not only has direct cytotoxicity to tumor cells, but also can boost the antitumor effect of immune cells by modulating immune system. The purpose of this study was to investigate the proliferation of NK cells treated with apigenin and its cytotoxicity to pancreatic cancer cells in vitro, and explore its potential molecular mechanism. In this study, the effect of apigenin on NK cell proliferation and killing pancreatic cancer cells were measured by CCK-8 assay. Perforin, granzyme B (Gran B), CD107a, and NKG2D expressions of NK cells induced with apigenin were detected by flow cytometry (FCM). The mRNA expression of Bcl-2, Bax and protein expression of Bcl-2, Bax, p-ERK, and p-JNK in NK cells were evaluated by qRT-PCR and western blotting analysis, respectively. The results showed that appropriate concentration of apigenin could significantly promote the proliferation of NK cells in vitro and enhance the killing activity of NK cells against pancreatic cancer cells. The expressions of surface antigen NKG2D and intracellular antigen perforin and Gran B of NK cells were upregulated after treating with apigenin. Bcl-2 mRNA expression was increased, while Bax mRNA expression was decreased. Similarly, the expression of Bcl-2, p-JNK, and p-ERK protein was upregulated, and the expression of Bax protein was downregulated. The molecular mechanism of the immunopotentiation effects of apigenin may be that it up-regulates Bcl-2 and down-regulates Bax expression at the gene and protein levels to facilitate NK cell proliferation, and up-regulates the expression of perforin, Gran B, and NKG2D through the activation of JNK and ERK pathways to enhance NK cell cytotoxicity.
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Affiliation(s)
- Yong-Bo Feng
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Jiangsu, China,Department of Gastroenterology, Nanjing Gaochun Hospital of Chinese Medicine, Jiangsu, China
| | - Ling Chen
- Department of Central Laboratory, the 71st Group Army Hospital of PLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, Jiangsu, China
| | - Fu-Xing Chen
- Department of Central Laboratory, the 71st Group Army Hospital of PLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, Jiangsu, China
| | - Yang Yang
- Department of Pharmacy, the 71st Group Army Hospital of PLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, Jiangsu, China
| | - Guo-Hua Chen
- Department of General Surgery, Nanjing Gaochun Hospital of Chinese Medicine, Jiangsu, China
| | - Zhong-Hai Zhou
- Department of Central Laboratory, the 71st Group Army Hospital of PLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, Jiangsu, China,Zhong-Hai Zhou, Department of Central Laboratory, the 71st Group Army Hospital of PLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, 236 Tongshan Road, Xuzhou, Jiangsu 221004, China.
| | - Chun-Fang Xu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Jiangsu, China,Chun-Fang Xu, Department of Gastroenterology, The First Affiliated Hospital of Soochow University, 188 Shizi street, Suzhou, Jiangsu 215006, China.
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5
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Lin JT, Chuang YC, Chen MK, Lo YS, Lin CC, Ho HY, Liu YT, Hsieh MJ. Shuterin Enhances the Cytotoxicity of the Natural Killer Leukemia Cell Line KHYG-1 by Increasing the Expression Levels of Granzyme B and IFN-γ through the MAPK and Ras/Raf Signaling Pathways. Int J Mol Sci 2022; 23:12816. [PMID: 36361609 PMCID: PMC9654641 DOI: 10.3390/ijms232112816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 08/26/2023] Open
Abstract
Natural killer (NK) cell therapy is an emerging tool for cancer immunotherapy. NK cells are isolated from peripheral blood, and their number and activity are limited. Therefore, primary NK cells should be expanded substantially, and their proliferation and cytotoxicity must be enhanced. Shuterin is a phytochemical isolated from Ficus thonningii. In this study, we explored the possible capacity of shuterin to enhance the proliferation and activity of KHYG-1 cells (an NK leukemia cell line). Shuterin enhanced the proliferation of KHYG-1 cells and their cytotoxicity to K562 cells. Moreover, this phytochemical induced the expression of granzyme B by promoting the phosphorylated cyclic adenosine monophosphate response element-binding protein (CREB) and mitogen-activated protein kinase (MAPK) signaling pathways. Furthermore, the secretion of interferon (IFN)-γ increased with increasing levels of shuterin in KHYG-1 cells and NK cells obtained from adults with head and neck squamous cell carcinoma. Shuterin appeared to induce IFN-γ secretion by increasing the expression of lectin-like transcript 1 and the phosphorylation of proteins involved in the Ras/Raf pathway. Thus, shuterin represents a promising agent for promoting the proliferation and cytotoxicity of NK cells.
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Affiliation(s)
- Jen-Tsun Lin
- Department of Medicine, Division of Hematology and Oncology, Changhua Christian Hospital, Changhua 500, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Yi-Ching Chuang
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Mu-Kuan Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Yu-Sheng Lo
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Chia-Chieh Lin
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Hsin-Yu Ho
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Yen-Tze Liu
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
- Department of Family Medicine, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Ming-Ju Hsieh
- Oral Cancer Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
- College of Medicine, National Chung Hsing University, Taichung 402, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 404, Taiwan
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6
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Park A, Yang Y, Lee Y, Jung H, Kim TD, Noh JY, Lee S, Yoon SR. Aurantii Fructus Immaturus enhances natural killer cytolytic activity and anticancer efficacy in vitro and in vivo. Front Med (Lausanne) 2022; 9:973681. [PMID: 36059847 PMCID: PMC9433751 DOI: 10.3389/fmed.2022.973681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Aurantii Fructus Immaturus (AFI), extensively used in traditional herbal medicine, is known to have diverse physiological effects against various diseases, including obesity, diabetes, and cardiovascular disease. However, the effects of AFI on the immune system, especially natural killer (NK) cells, remain largely unknown. We aimed to investigate the effect of AFI on NK cell activity in vitro and in vivo and to elucidate the underlying mechanisms. Further, we verified the anticancer efficacy of AFI in a mouse lung metastasis model, underscoring the therapeutic potential of AFI in cancer therapy. Our results revealed that AFI significantly enhanced the cytolytic activity of NK cells in a dose-dependent manner, accompanied by an increase in the expression of NK cell-activating receptors, especially NKp30 and NKp46. AFI treatment also increased the expression of cytolytic granules, including granzyme B and perforin. Furthermore, the expression of CD107a, a degranulation marker, was increased upon treatment with AFI. A signaling study using western blot analysis demonstrated that the phosphorylation of extracellular signal-regulated kinase (ERK) was involved in increasing the NK cell activity following AFI treatment. In the in vivo study performed in mice, oral administration of AFI markedly enhanced the cytotoxic activity of spleen mononuclear cells against YAC-1 cells, which was accompanied by NKp46 upregulation. In addition, we confirmed that cancer metastasis was inhibited in a mouse cancer metastasis model, established using the mouse melanoma B16F10 cell line, by the administration of AFI in vivo. Collectively, these results indicate that AFI enhances NK cell-mediated cytotoxicity in vitro and in vivo via activation of the ERK signaling pathway and suggest that AFI could be a potential supplement for cancer immunotherapy.
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Affiliation(s)
- Arum Park
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Yunjeong Yang
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
- Department of Pharmacology, College of Pharmacy, Chungnam University, Daejeon, South Korea
| | - Yunhee Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
- Department of Pharmacology, College of Pharmacy, Chungnam University, Daejeon, South Korea
| | - Haiyoung Jung
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Ji-Yoon Noh
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Seungjin Lee
- Department of Pharmacology, College of Pharmacy, Chungnam University, Daejeon, South Korea
| | - Suk Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
- *Correspondence: Suk Ran Yoon,
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7
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Lau CM, Wiedemann GM, Sun JC. Epigenetic regulation of natural killer cell memory. Immunol Rev 2022; 305:90-110. [PMID: 34908173 PMCID: PMC8955591 DOI: 10.1111/imr.13031] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/20/2021] [Accepted: 09/29/2021] [Indexed: 01/03/2023]
Abstract
Immunological memory is the underlying mechanism by which the immune system remembers previous encounters with pathogens to produce an enhanced secondary response upon re-encounter. It stands as the hallmark feature of the adaptive immune system and the cornerstone of vaccine development. Classic recall responses are executed by conventional T and B cells, which undergo somatic recombination and modify their receptor repertoire to ensure recognition of a vast number of antigens. However, recent evidence has challenged the dogma that memory responses are restricted to the adaptive immune system, which has prompted a reevaluation of what delineates "immune memory." Natural killer (NK) cells of the innate immune system have been at the forefront of these pushed boundaries, and have proved to be more "adaptable" than previously thought. Like T cells, we now appreciate that their "natural" abilities actually require a myriad of signals for optimal responses. In this review, we discuss the many signals required for effector and memory NK cell responses and the epigenetic mechanisms that ultimately endow their enhanced features.
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Affiliation(s)
- Colleen M. Lau
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Gabriela M. Wiedemann
- Department of Internal Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - Joseph C. Sun
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York, USA,Department of Immunology and Microbial Pathogenesis, Weill Cornell Medical College, New York, New York, USA
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8
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Lu T, Cardenas A, Perron P, Hivert MF, Bouchard L, Greenwood CMT. Detecting cord blood cell type-specific epigenetic associations with gestational diabetes mellitus and early childhood growth. Clin Epigenetics 2021; 13:131. [PMID: 34174944 PMCID: PMC8236204 DOI: 10.1186/s13148-021-01114-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Epigenome-wide association studies (EWAS) have provided opportunities to understand the role of epigenetic mechanisms in development and pathophysiology of many chronic diseases. However, an important limitation of conventional EWAS is that profiles of epigenetic variability are often obtained in samples of mixed cell types. Here, we aim to assess whether changes in cord blood DNA methylation (DNAm) associated with gestational diabetes mellitus (GDM) exposure and early childhood growth markers occur in a cell type-specific manner. RESULTS We analyzed 275 cord blood samples collected at delivery from a prospective pre-birth cohort with genome-wide DNAm profiled by the Illumina MethylationEPIC array. We estimated proportions of seven common cell types in each sample using a cord blood-specific DNAm reference panel. Leveraging a recently developed approach named CellDMC, we performed cell type-specific EWAS to identify CpG loci significantly associated with GDM, or 3-year-old body mass index (BMI) z-score. A total of 1410 CpG loci displayed significant cell type-specific differences in methylation level between 23 GDM cases and 252 controls with a false discovery rate < 0.05. Gene Ontology enrichment analysis indicated that LDL transportation emerged from CpG specifically identified from B-cells DNAm analyses and the mitogen-activated protein kinase pathway emerged from CpG specifically identified from natural killer cells DNAm analyses. In addition, we identified four and six loci associated with 3-year-old BMI z-score that were specific to CD8+ T-cells and monocytes, respectively. By performing genome-wide permutation tests, we validated that most of our detected signals had low false positive rates. CONCLUSION Compared to conventional EWAS adjusting for the effects of cell type heterogeneity, the proposed approach based on cell type-specific EWAS could provide additional biologically meaningful associations between CpG methylation, prenatal maternal GDM or 3-year-old BMI. With careful validation, these findings may provide new insights into the pathogenesis, programming, and consequences of related childhood metabolic dysregulation. Therefore, we propose that cell type-specific analyses are worth cautious explorations.
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Affiliation(s)
- Tianyuan Lu
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada
- Quantitative Life Sciences Program, McGill University, Montréal, QC, Canada
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health and Center for Computational Biology, University of California, Berkeley, CA, USA
| | - Patrice Perron
- Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
- Centre de Recherche du Centre Hospitalier, Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Marie-France Hivert
- Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
- Diabetes Unit, Massachusetts General Hospital, Boston, MA, USA
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, USA
| | - Luigi Bouchard
- Centre de Recherche du Centre Hospitalier, Universitaire de Sherbrooke, Sherbrooke, QC, Canada
- Department of Biochemistry and Functional Genomics, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Medical Biology, Centre Intégré Universitaire de Santé et de Services Sociaux Saguenay-Lac-Saint-Jean - Hôpital Universitaire de Chicoutimi, Saguenay, QC, Canada
| | - Celia M T Greenwood
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada.
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, QC, Canada.
- Department of Human Genetics, McGill University, Montréal, QC, Canada.
- Gerald Bronfman Department of Oncology, McGill University, Montréal, QC, Canada.
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Bakarozi M, Mavropoulos A, Bogdanos DP, Dalekos GN, Rigopoulou EI. p38 mitogen-activated protein kinase impairment of innate immune cells is a characteristic feature of HBeAg-negative chronic hepatitis B. J Viral Hepat 2020; 27:52-60. [PMID: 31520461 DOI: 10.1111/jvh.13209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 08/06/2019] [Accepted: 08/20/2019] [Indexed: 12/09/2022]
Abstract
The mitogen-activated protein kinase p38 (MAPK) is implicated in the induction of immune responses by regulating the differentiation of T lymphocytes and production of cytokines. Our aim was to investigate p38MAPK phosphorylation in different stages of the natural history of hepatitis B virus (HBV) infection. Peripheral blood mononuclear cells (PBMCs) were isolated by Ficoll-Hypaque density-based centrifugation from 10 patients with HBeAg-negative chronic hepatitis B [HBeAg(-) CHB;HBV-DNA>2000IU/mL], eight patients with HBeAg-negative chronic HBV infection [HBeAg(-) CI;undetectable HBV-DNA] and 8 healthy controls (HCs). p38MAPK phosphorylation was assessed by phospho-specific flow cytometry in PBMCs and cell subsets (CD3+,CD3-,CD56+,CD56-) after stimulation with cytokines (IL-12+IL-2 and IL-12+IL-18) or nonspecific stimuli [arsenite, phorbol 12-myristate 13-acetate (PMA) and ionomycin] at 0,30,60,120 and 240 minutes using p38 phospho-specific conjugated antibodies. ΙFN-γ was determined by ELISA in PBMCs culture supernatants after stimulation with rhIL-2, rhIL-12 and rhIL-18, with and without pre-treatment with the p38 MAPK inhibitor, SB203580. HBeAg(-) CI patients showed the highest expression of phosphor-p38 MAPK in total PBMCs and subpopulations compared to HBeAg(-) CHB and HCs. A striking impairment in p38 phosphorylation was noted in CD56+ cells and in especially in NK cells (CD3-CD56+). SB203580-induced inhibition of p38MAPK phosphorylation was associated with suppression of IFN-γ production in all groups. The universal lack of p38 MAPK activation in CD56+ and in particular in NK cells from HBeAg(-) CHB patients during viremia suggests a potential cell-dependent implication of this pathway in the natural history of HBV infection.
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Affiliation(s)
- Marianna Bakarozi
- Department of Medicine & Research Laboratory of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Athanasios Mavropoulos
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Dimitrios P Bogdanos
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - George N Dalekos
- Department of Medicine & Research Laboratory of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Eirini I Rigopoulou
- Department of Medicine & Research Laboratory of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
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10
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Lee SE, Lee JK. Sesamolin affects both natural killer cells and cancer cells in order to create an optimal environment for cancer cell sensitization. Int Immunopharmacol 2018; 64:16-23. [PMID: 30144640 DOI: 10.1016/j.intimp.2018.08.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 08/16/2018] [Accepted: 08/20/2018] [Indexed: 12/31/2022]
Abstract
In our previous study, we demonstrated that sesamolin can increase the level of cancer cell susceptibility to natural killer (NK) cell mediated cytolysis when it treats cancer cells. The present study attempted to demonstrate the direct influence of sesamolin on NK cells. To achieve the study goal, an NK cell (NK-92MI) or Raji cell was treated with sesamolin for use in the analysis of the cytolytic activity of NK cells. When NK-92MI cells were treated with sesamolin, the cytolysis activities of NK cells increased depending on the concentration of sesamolin. However, the highest cytolytic activity of NK cells was observed when Raji and NK-92MI cells were treated with sesamolin at 20 μg/mL and 40 μg/mL, respectively. Sesamolin also increased the expression of the degranulation marker, CD107a, on the surface of NK cells and the production of immune-activation cytokine, IFN-γ, from NK cells. The effects of sesamolin on NK cells were reproduced in the naïve NK cells. We found that sesamolin effects are triggered by the result of phosphorylation of the p38, ERK1/2 and JNK pathways in NK cells. Taken together, this study proved that NK cell activity can be increased by the stimulation of sesamolin on NK cells as well as cancer cells.
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Affiliation(s)
- Seo Eun Lee
- Department of Biology Education, College of Education, Chungbuk National University, Chungbuk 361-763, Republic of Korea
| | - Jae Kwon Lee
- Department of Biology Education, College of Education, Chungbuk National University, Chungbuk 361-763, Republic of Korea.
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11
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Kearney CJ, Vervoort SJ, Ramsbottom KM, Freeman AJ, Michie J, Peake J, Casanova JL, Picard C, Tangye SG, Ma CS, Johnstone RW, Randall KL, Oliaro J. DOCK8 Drives Src-Dependent NK Cell Effector Function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 199:ji1700751. [PMID: 28794229 DOI: 10.4049/jimmunol.1700751] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/12/2017] [Indexed: 01/05/2023]
Abstract
Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause an autosomal recessive form of hyper-IgE syndrome, characterized by chronic immunodeficiency with persistent microbial infection and increased incidence of malignancy. These manifestations suggest a defect in cytotoxic lymphocyte function and immune surveillance. However, how DOCK8 regulates NK cell-driven immune responses remains unclear. In this article, we demonstrate that DOCK8 regulates NK cell cytotoxicity and cytokine production in response to target cell engagement or receptor ligation. Genetic ablation of DOCK8 in human NK cells attenuated cytokine transcription and secretion through inhibition of Src family kinase activation, particularly Lck, downstream of target cell engagement or NKp30 ligation. PMA/Ionomycin treatment of DOCK8-deficient NK cells rescued cytokine production, indicating a defect proximal to receptor ligation. Importantly, NK cells from DOCK8-deficient patients had attenuated production of IFN-γ and TNF-α upon NKp30 stimulation. Taken together, we reveal a novel molecular mechanism by which DOCK8 regulates NK cell-driven immunity.
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Affiliation(s)
- Conor J Kearney
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Stephin J Vervoort
- Gene Regulation Laboratory, Cancer Therapeutics Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Kelly M Ramsbottom
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Andrew J Freeman
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Jessica Michie
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Jane Peake
- University of Queensland and Lady Cilento Children's Hospital, Brisbane, Queensland 4006, Australia
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Imagine Institute, Necker Medical School, University Paris Descartes, 75015 Paris, France
- Pediatric Hematology and Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
- St. Giles Laboratory of Human Genetics and Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065
- Howard Hughes Medical Institute, New York, NY 10065
| | - Capucine Picard
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Imagine Institute, Necker Medical School, University Paris Descartes, 75015 Paris, France
- St. Giles Laboratory of Human Genetics and Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France
| | - Stuart G Tangye
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia
- St. Vincent's Clinical School, University of New South Wales, New South Wales 2052, Australia
| | - Cindy S Ma
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia
- St. Vincent's Clinical School, University of New South Wales, New South Wales 2052, Australia
| | - Ricky W Johnstone
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
- Gene Regulation Laboratory, Cancer Therapeutics Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Katrina L Randall
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, Australian National University, Acton, Australian Capital Territory 2601, Australia; and
- Australian National University Medical School, Australian National University, Acton, Australian Capital Territory 2601, Australia
| | - Jane Oliaro
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia;
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
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12
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Li Y, Lu H, Gu Y, Ning Z, Cao T, Chen C, Hu C, Tao M. Enhancement of NK cells proliferation and function by Shikonin. Immunopharmacol Immunotoxicol 2017; 39:124-130. [PMID: 28303727 DOI: 10.1080/08923973.2017.1299174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yan Li
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Hailin Lu
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Yongchun Gu
- Central Laboratory, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Zhiqiang Ning
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Tinghua Cao
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Chao Chen
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Chengru Hu
- Department of Oncology, The Affiliated Wujiang Hospital of Nantong University, Suzhou, P.R. China
| | - Min Tao
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
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13
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Yang LC, Lai CY, Lin WC. Natural killer cell-mediated cytotoxicity is increased by a type II arabinogalactan from Anoectochilus formosanus. Carbohydr Polym 2017; 155:466-474. [DOI: 10.1016/j.carbpol.2016.08.086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 01/09/2023]
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14
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Lu CC, Hsu YJ, Chang CJ, Lin CS, Martel J, Ojcius DM, Ko YF, Lai HC, Young JD. Immunomodulatory properties of medicinal mushrooms: differential effects of water and ethanol extracts on NK cell-mediated cytotoxicity. Innate Immun 2016; 22:522-33. [DOI: 10.1177/1753425916661402] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 07/05/2016] [Indexed: 12/28/2022] Open
Abstract
Medicinal mushrooms have been used for centuries in Asian countries owing to their beneficial effects on health and longevity. Previous studies have reported that a single medicinal mushroom may produce both stimulatory and inhibitory effects on immune cells, depending on conditions, but the factors responsible for this apparent dichotomy remain obscure. We show here that water and ethanol extracts of cultured mycelium from various species ( Agaricus blazei Murrill, Antrodia cinnamomea, Ganoderma lucidum and Hirsutella sinensis) produce opposite effects on NK cells. Water extracts enhance NK cell cytotoxic activity against cancer cells, whereas ethanol extracts inhibit cytotoxicity. Water extracts stimulate the expression and production of cytolytic proteins (perforin and granulysin) and NKG2D/NCR cell surface receptors, and activate intracellular signaling kinases (ERK, JNK and p38). In contrast, ethanol extracts inhibit expression of cytolytic and cell surface receptors. Our results suggest that the mode of extraction of medicinal mushrooms may determine the nature of the immunomodulatory effects produced on immune cells, presumably owing to the differential solubility of stimulatory and inhibitory mediators. These findings have important implications for the preparation of medicinal mushrooms to prevent and treat human diseases.
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Affiliation(s)
- Chia-Chen Lu
- Department of Respiratory Therapy, Fu Jen Catholic University, New Taipei City, Taiwan, Republic of China
| | - Ya-Jing Hsu
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Chih-Jung Chang
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Chuan-Sheng Lin
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Jan Martel
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - David M Ojcius
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Biomedical Sciences, University of the Pacific, Arthur Dugoni School of Dentistry, San Francisco, CA, USA
| | - Yun-Fei Ko
- Chang Gung Biotechnology Corporation, Taipei, Taiwan, Republic of China
- Biochemical Engineering Research Center, Ming Chi University of Technology, New Taipei City, Taiwan, Republic of China
| | - Hsin-Chih Lai
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, Republic of China
| | - John D Young
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Laboratory of Nanomaterials, Chang Gung University, Taoyuan, Taiwan, Republic of China
- Chang Gung Biotechnology Corporation, Taipei, Taiwan, Republic of China
- Biochemical Engineering Research Center, Ming Chi University of Technology, New Taipei City, Taiwan, Republic of China
- Laboratory of Cellular Physiology and Immunology, Rockefeller University, New York, NY, USA
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15
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Yang G, Kong Q, Wang G, Jin H, Zhou L, Yu D, Niu C, Han W, Li W, Cui J. Low-dose ionizing radiation induces direct activation of natural killer cells and provides a novel approach for adoptive cellular immunotherapy. Cancer Biother Radiopharm 2015; 29:428-34. [PMID: 25402754 DOI: 10.1089/cbr.2014.1702] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Recent evidence indicates that limited availability and cytotoxicity have restricted the development of natural killer (NK) cells in adoptive cellular immunotherapy (ACI). While it has been reported that low-dose ionizing radiation (LDIR) could enhance the immune response in animal studies, the influence of LDIR at the cellular level has been less well defined. In this study, the authors aim to investigate the direct effects of LDIR on NK cells and the potential mechanism, and explore the application of activation and expansion of NK cells by LDIR in ACI. The authors found that expansion and cytotoxicity of NK cells were markedly augmented by LDIR. The levels of IFN-γ and TNF-α in the supernatants of cultured NK cells were significantly increased after LDIR. Additionally, the effect of the P38 inhibitor (SB203580) significantly decreased the expanded NK cell cytotoxicity, cytokine levels, and expression levels of FasL and perforin. These findings indicate that LDIR induces a direct expansion and activation of NK cells through possibly the P38-MAPK pathway, which provides a potential mechanism for stimulation of NK cells by LDIR and a novel but simplified approach for ACI.
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Affiliation(s)
- Guozi Yang
- Cancer Center, the First Hospital of Jilin University , Changchun, China
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16
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Polymethoxylated flavones potentiate the cytolytic activity of NK leukemia cell line KHYG-1 via enhanced expression of granzyme B. Biochem Biophys Res Commun 2015; 456:799-803. [DOI: 10.1016/j.bbrc.2014.12.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 12/06/2014] [Indexed: 11/20/2022]
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17
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Chang CJ, Chen YYM, Lu CC, Lin CS, Martel J, Tsai SH, Ko YF, Huang TT, Ojcius DM, Young JD, Lai HC. Ganoderma lucidum stimulates NK cell cytotoxicity by inducing NKG2D/NCR activation and secretion of perforin and granulysin. Innate Immun 2013; 20:301-11. [PMID: 23803412 DOI: 10.1177/1753425913491789] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Ganoderma lucidum (G. lucidum) is a medicinal mushroom long used in Asia as a folk remedy to promote health and longevity. Recent studies indicate that G. lucidum activates NK cells, but the molecular mechanism underlying this effect has not been studied so far. To address this question, we prepared a water extract of G. lucidum and examined its effect on NK cells. We observed that G. lucidum treatment increases NK cell cytotoxicity by stimulating secretion of perforin and granulysin. The mechanism of activation involves an increased expression of NKG2D and natural cytotoxicity receptors (NCRs), as well as increased phosphorylation of intracellular MAPKs. Our results indicate that G. lucidum induces NK cell cytotoxicity against various cancer cell lines by activating NKG2D/NCR receptors and MAPK signaling pathways, which together culminate in exocytosis of perforin and granulysin. These observations provide a cellular and molecular mechanism to account for the reported anticancer effects of G. lucidum extracts in humans.
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Affiliation(s)
- Chih-Jung Chang
- 1Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan, Republic of China
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18
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Mavropoulos A, Orfanidou T, Liaskos C, Smyk DS, Billinis C, Blank M, Rigopoulou EI, Bogdanos DP. p38 mitogen-activated protein kinase (p38 MAPK)-mediated autoimmunity: lessons to learn from ANCA vasculitis and pemphigus vulgaris. Autoimmun Rev 2012. [PMID: 23207287 DOI: 10.1016/j.autrev.2012.10.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Evidence is beginning to accumulate that p38 mitogen activated protein kinase (p38 MAPK) signaling pathway plays an important role in the regulation of cellular and humoral autoimmune responses. The exact mechanisms and the degree by which the p38 MAPK pathway participates in the immune-mediated induction of diseases have started to emerge. This review discusses the recent advances in the molecular dissection of the p38 MAPK pathway and the findings generated by reports investigating its role in the pathogenesis of autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, and autoimmune hepatitis. Application of newly-developed protocols based on sensitive flow cytometric detection has proven to be a useful tool in the investigation of the phosphorylation of p38 MAPK within different peripheral blood mononuclear cell populations and may help us to better understand the enigmatic role of this signaling cascade in the induction of autoimmunity as well as its role in immunosuppressive-induced remission. Special attention is paid to reported data proposing a specific role for autoantibody-induced activation of p38 MAPK-mediated immunopathology in the pathogenesis of autoimmune blistering diseases and anti-neutrophilic antibody-mediated vasculitides.
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Affiliation(s)
- Athanasios Mavropoulos
- Institute of Liver Studies, King's College London School of Medicine at King's College Hospital, Denmark Hill Campus, London SE5 9RS, UK
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19
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Hassold N, Seystahl K, Kempf K, Urlaub D, Zekl M, Einsele H, Watzl C, Wischhusen J, Seggewiss-Bernhardt R. Enhancement of natural killer cell effector functions against selected lymphoma and leukemia cell lines by dasatinib. Int J Cancer 2012; 131:E916-27. [PMID: 22419518 DOI: 10.1002/ijc.27537] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 02/28/2012] [Indexed: 11/06/2022]
Abstract
As NK cell immunotherapy is still poorly successful, combinations with drugs enhancing NK cell activity are of major interest. NK large granular lymphocyte expansions associated with improved survival have been described under monotherapy with the Bcr-Abl/Src inhibitor dasatinib, which inhibits NK cell functions in vitro. As Src kinases play a major role in inhibitory and activating signaling pathways of NK cells, both outcomes appear plausible. To clarify these contradictory observations and potentially enable the use of dasatinib as adjuvant, we analyzed how clinically relevant doses promote NK cell effector functions. Polyclonal human NK cells were studied ex vivo. Functional outcomes assessed included conjugate formation, calcium flux, receptor regulation, cytokine production, degranulation, cytotoxicity, apoptosis induction and signal transduction. While dasatinib inhibits NK cell effector functions during functional assays, 24 hr pretreatment of NK cells followed by washout of dasatinib, led to dose-dependent enhancement of cytokine production, degranulation marker expression and cytotoxicity against selected lymphoma and leukemia cell lines. Mechanistically, this was neither due to an altered viability of NK cells nor increased NKG2D, LFA-1 or conjugate formation with target cells. Receptor proximal signaling events were inhibited. However, a slight time dependent enhancement of Vav phosphorylation was observed under certain circumstances. The shift in Vav phosphorylation level may be one major mechanism for NK cell activity enhancement induced by dasatinib. Our findings argue for a careful timing and dosing of dasatinib application during leukemia/lymphoma treatment to enhance NK cell immunotherapeutic efforts.
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Affiliation(s)
- Nicole Hassold
- Immune Recovery Section, Comprehensive Cancer Center, Department of Internal Medicine II, University of Würzburg, Würzburg, Germany
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20
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Lai HC, Chang CJ, Yang CH, Hsu YJ, Chen CC, Lin CS, Tsai YH, Huang TT, Ojcius DM, Tsai YH, Lu CC. Activation of NK cell cytotoxicity by the natural compound 2,3-butanediol. J Leukoc Biol 2012; 92:807-14. [PMID: 22802446 DOI: 10.1189/jlb.0112024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The natural compound 2,3-BTD has diverse physiological effects in a range of organisms, including acting as a detoxifying product of liver alcohol metabolism in humans and ameliorating endotoxin-induced acute lung injury in rats. In this study, we reveal that 2,3-BTD enhances NK cell cytotoxic activity in human pNK cells and NK92 cells. Treatment of NK cells with 2,3-BTD increased perforin expression in a dose-dependent manner. This was accompanied by elevated JNK and ERK1/2 MAPK activities and enhanced expression of NKG2D/NCRs, upstream signaling molecules of the MAPK pathways. The 2,3-BTD effect was inhibited by pretreatment with inhibitors of JNK (SP) or ERK1/2 (PD) or by depleting NKG2D/NCRs or JNK1 or ERK2 with siRNA. These results indicate that 2,3-BTD activates NK cell cytotoxicity by NKG2D/NCR pathways and represent the first report of the 2,3-BTD effect on activation of innate immunity cells.
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Affiliation(s)
- Hsin-Chih Lai
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taiwan, Republic of China
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21
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Effect of azithromycin on natural killer cell function. Int Immunopharmacol 2012; 13:8-14. [PMID: 22410149 DOI: 10.1016/j.intimp.2012.02.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 02/01/2012] [Accepted: 02/27/2012] [Indexed: 12/16/2022]
Abstract
Azithromycin (AZM), a macrolide antibiotic for treating mycoplasma infections, may exhibit anti-inflammatory activity aside from its antimicrobial effect, providing additional therapeutic benefit. Natural killer (NK) cells, a first-line innate immune defense against microbial invasions, paradoxically exert a detrimental effect in protecting mycoplasma infection. Little was known regarding the effect of AZM on NK cells. In the present study, we investigated the ability of azithromycin to influence natural killer (NK) cell function with regard to activation, apoptosis and cytotoxic function. AZM had little effect on NK receptor expression and cytotoxic function of NK-92 cells. However, AZM did show a dose-dependent suppression on IL-15-induced CD69 expression of primary NK cells. AZM inhibited the cytotoxicity against K562 cells of resting and IL-15 activated primary NK cells possibly through down-regulation of perforin expression, especially on CD16(+)CD56(+) NK subsets. AZM exerted a dose-dependent inhibition of IFN-gamma and TNF-alpha production from NK-92 cells, but did not affect the cytokine production of IL-15 activated primary NK cells. Taken together, AZM down-regulates NK cytotoxicity and cytokine production and may provide therapeutic benefits aside from its antimicrobial activity.
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22
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Renoux VM, Bisig B, Langers I, Dortu E, Clémenceau B, Thiry M, Deroanne C, Colige A, Boniver J, Delvenne P, Jacobs N. Human papillomavirus entry into NK cells requires CD16 expression and triggers cytotoxic activity and cytokine secretion. Eur J Immunol 2011; 41:3240-52. [PMID: 21830210 DOI: 10.1002/eji.201141693] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 07/08/2011] [Accepted: 08/03/2011] [Indexed: 12/25/2022]
Abstract
Human papillomavirus (HPV) infections account for more than 50% of infection-linked cancers in women worldwide. The immune system controls, at least partially, viral infection and around 90% of HPV-infected women clear the virus within two years. However, it remains unclear which immune cells are implicated in this process and no study has evaluated the direct interaction between HPVs and NK cells, a key player in host resistance to viruses and tumors. We demonstrated an NK-cell infiltration in HPV-associated preneoplastic cervical lesions. Since HPVs cannot grow in vitro, virus-like particles (VLPs) were used as a model for studying the NK-cell response against the virus. Interestingly, NK cells displayed higher cytotoxic activity and cytokine production (TNF-α and IFN-γ) in the presence of HPV-VLPs. Using flow cytometry and microscopy, we observed that NK-cell stimulation was linked to rapid VLP entry into these cells by macropinocytosis. Using CD16(+) and CD16(-) NK-cell lines and a CD16-blocking antibody, we demonstrated that CD16 is necessary for HPV-VLP internalization, as well as for degranulation and cytokine production. Thus, we show for the first time that NK cells interact with HPVs and can participate in the immune response against HPV-induced lesions.
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Affiliation(s)
- Virginie M Renoux
- Laboratory of Experimental Pathology, University of Liège, Liège, Belgium
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23
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Ogbomo H, Biru T, Michaelis M, Loeschmann N, Doerr HW, Cinatl J. The anti-tumoral drug enzastaurin inhibits natural killer cell cytotoxicity via activation of glycogen synthase kinase-3β. Biochem Pharmacol 2011; 81:251-8. [DOI: 10.1016/j.bcp.2010.09.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 09/06/2010] [Accepted: 09/28/2010] [Indexed: 01/18/2023]
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24
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Abraha AB, Whalen MM. The role of p44/42 activation in tributyltin-induced inhibition of human natural killer cells: effects of MEK inhibitors. J Appl Toxicol 2009; 29:165-73. [PMID: 18989867 DOI: 10.1002/jat.1397] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Destruction of tumor cells is a key function of natural killer (NK) cells. Previous studies have shown that tributyltin (TBT) can significantly reduce the lytic function of the human NK cells with accompanying increases in the phosphorylation (activation) states of the mitogen activated protein kinases (MAPKs), p44/42. The current studies examine the role of p44/42 activation in the TBT-induced reduction of NK-lytic function, by using MAPK kinase (MEK) inhibitors, PD98059 and U0126. A 1 h treatment with PD98059 or U0126 or both decreased the ability of NK cells to lyse K562 tumor cells. PD98059, U0126 or a combination of both inhibitors were able to completely block TBT-induced activation of p44/42. However, when p44/42 activation was blocked by the presence of PD98059, U0126 or the combination, subsequent exposure to TBT was still able to decrease the lytic function of NK cells. These results indicate that TBT-induced activation of p44/42 occurs via the activation of its upstream activator, MEK, and not by a TBT-induced inhibition of p44/42 phosphatase activity. Additionally, as lytic function was never completely blocked by MEK inhibitors, the results indicate that activation of p44/42 pathway is not solely responsible for the activation of lytic function of freshly isolated human NK cells. Finally, the results showed that TBT-induced activation of p44/42 is not solely responsible for the loss of lytic function.
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Affiliation(s)
- Abraham B Abraha
- Department of Chemistry, Tennessee State University, Nashville, TN 37209-1561, USA
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25
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Fan S, Meng Q, Laterra JJ, Rosen EM. Role of Src signal transduction pathways in scatter factor-mediated cellular protection. J Biol Chem 2008; 284:7561-77. [PMID: 19047046 DOI: 10.1074/jbc.m807497200] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Scatter factor (SF) (hepatocyte growth factor) is a pleiotrophic cytokine that accumulates in tumors, where it may induce invasion, angiogenesis, and chemoresistance. We have studied the mechanisms by which SF and its receptor (c-Met) protect cells against the DNA-damaging agent adriamycin (ADR) as a model for chemoresistance of SF/c-Met-overexpressing tumors. Previous studies identified a phosphatidylinositol 3-kinase/c-Akt/Pak1/NF-kappaB cell survival pathway in DU-145 prostate cancer and Madin-Darby canine kidney epithelial cells. Here we studied Src signaling pathways involved in SF cell protection. Src enhanced basal and SF stimulated NF-kappaB activity and SF protection against ADR, in a manner dependent upon its kinase and Src homology 3 domains; and endogenous Src was required for SF stimulation of NF-kappaB activity and cell protection. The ability of Src to enhance SF stimulation of NF-kappaB activity was due, in part, to its ability to stimulate Akt and IkappaB kinase activity; and Src-mediated stimulation of NF-kappaB was due, in part, to a Rac1/MKK3/6/p38 pathway and was Akt-dependent. SF caused the activation of Src and the Rac1 effector Pak1. Furthermore, SF induced activating phosphorylations of MKK3, MKK6, and p38 within the c-Met signalsome in an Src-dependent manner. The NF-kappaB-inducing kinase was found to act downstream of TAK1 (transforming growth factor-beta-activated kinase 1) as a mediator of SF- and Src-stimulated NF-kappaB activity. Finally, the Src/Rac1/MKK3/6/p38 and Src/TAK1/NF-kappaB-inducing kinase pathways exhibited cross-talk at the level of MKK3. These findings delineate some novel signaling pathways for SF-mediated resistance to ADR.
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Affiliation(s)
- Saijun Fan
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
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26
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Li C, Ge B, Nicotra M, Stern JNH, Kopcow HD, Chen X, Strominger JL. JNK MAP kinase activation is required for MTOC and granule polarization in NKG2D-mediated NK cell cytotoxicity. Proc Natl Acad Sci U S A 2008; 105:3017-22. [PMID: 18287025 PMCID: PMC2268577 DOI: 10.1073/pnas.0712310105] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Indexed: 02/06/2023] Open
Abstract
Interaction of the activating receptor NKG2D with its ligands is a major stimulatory pathway for cytotoxicity of natural killer (NK) cells. Here, the signaling pathway involved after NKG2D ligation is examined. Either incubation of the NKG2D-bearing human NKL tumor cell line with K562 target cells or cross-linking with NKG2D mAb induced strong activation of the mitogen-activated protein (MAP) kinases. Selective inhibition of JNK MAP kinase with four different means of inhibition greatly reduced NKG2D-mediated cytotoxicity toward target cells and furthermore, blocked the movement of the microtubule organizing center (MTOC), granzyme B (a component of cytotoxic granules), and paxillin (a scaffold protein) to the immune synapse. NKG2D-induced activation of JNK kinase was also blocked by inhibitors of Src protein tyrosine kinases and phospholipase PLCgamma, upstream of JNK. Similarly, a second MAP kinase pathway through ERK was previously shown to be required for NK cell cytotoxicity. Thus, activation of two MAP kinase pathways is required for cytotoxic granule and MTOC polarization and for cytotoxicity of human NK cells when NKG2D is ligated.
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MESH Headings
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/metabolism
- Cell Polarity/immunology
- Cytotoxicity Tests, Immunologic
- Enzyme Activation/immunology
- Flow Cytometry
- Granzymes/metabolism
- Humans
- Immunoblotting
- JNK Mitogen-Activated Protein Kinases/metabolism
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Microscopy, Confocal
- Microtubule-Organizing Center/metabolism
- NK Cell Lectin-Like Receptor Subfamily K
- Paxillin/metabolism
- RNA, Small Interfering/genetics
- Receptors, Immunologic/immunology
- Receptors, Immunologic/metabolism
- Receptors, Natural Killer Cell
- Signal Transduction/immunology
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Affiliation(s)
- Changlin Li
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Baoxue Ge
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Matthew Nicotra
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Joel N. H. Stern
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Hernan D. Kopcow
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Xi Chen
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Jack L. Strominger
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
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27
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Tassi I, Klesney-Tait J, Colonna M. Dissecting natural killer cell activation pathways through analysis of genetic mutations in human and mouse. Immunol Rev 2007; 214:92-105. [PMID: 17100878 DOI: 10.1111/j.1600-065x.2006.00463.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Natural killer (NK) cell cytotoxicity is mediated by multiple germ line-encoded activating receptors that recognize specific ligands expressed by tumor cells and virally infected cells. These activating receptors are opposed by NK inhibitory receptors, which recognize major histocompatibility complex class I molecules on potential targets, raising the threshold for NK cell activation. Once an abnormal cell has been detected, NK cells are the sentinel source of cytolytic mediators, such as granzymes and perforins, as well as interferon-gamma, which can polarize the immune response to a T-helper 1 cell type. Activation signals are transmitted by adhesion-dependent pathways, immunoreceptor tyrosine-based activation motif (ITAM)-dependent pathways, DAP10 ITAM-independent pathways, and by signaling through immunoreceptor tyrosine-based switch motifs. These pathways activate downstream signaling partners to trigger NK cell cytotoxicity. Some of these downstream molecules are unique to the various pathways, and some of these molecules are shared. Because of the complexity of signals involved in NK cell-target cell interaction, the generation of mice with targeted mutations in signaling molecules involved in adhesion, activation, or inhibition is essential for a precise dissection of the mechanisms regulating NK cell effector functions. Here we review recent advances in the genetic analysis of the signaling pathways that mediate NK cell killing.
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Affiliation(s)
- Ilaria Tassi
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO 63110, USA
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28
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Hesslein DGT, Takaki R, Hermiston ML, Weiss A, Lanier LL. Dysregulation of signaling pathways in CD45-deficient NK cells leads to differentially regulated cytotoxicity and cytokine production. Proc Natl Acad Sci U S A 2006; 103:7012-7. [PMID: 16627620 PMCID: PMC1459010 DOI: 10.1073/pnas.0601851103] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
CD45, a protein tyrosine phosphatase that regulates Src family kinases, is important for regulating T cell and B cell receptor signaling; however, little is known about how CD45 regulates immunoreceptor tyrosine-based activation motif (ITAM)-dependent natural killer (NK) cell receptor signaling and the resulting effector functions. NK cells from CD45-deficient mice are relatively competent for ITAM receptor-induced cell-mediated cytotoxicity, yet completely deficient for cytokine secretion after stimulation with ligands to or antibodies against NK1.1, CD16, Ly49H, Ly49D, and NKG2D. This deficiency in cytokine/chemokine production occurs at the level of mRNA expression. After receptor engagement, extracellular signal-regulated kinase and c-Jun N-terminal kinase activation was markedly perturbed, whereas p38 activation was not substantially affected. The pattern and amounts of basal tyrosine phosphorylation were altered in freshly isolated NK cells and were surprisingly and markedly increased in IL-2-expanded NK cells from CD45-/- mice. These findings indicate that CD45-dependent regulation of ITAM-dependent signaling pathways is essential for NK cell-mediated cytokine production but not cytolytic activity.
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Affiliation(s)
| | - Rayna Takaki
- *Department of Microbiology and Immunology and Cancer Research Institute
- Biomedical Sciences Graduate Program
| | | | - Arthur Weiss
- Department of Medicine, The Rosalind Russell Medical Research Center for Arthritis and Howard Hughes Medical Institute, University of California, San Francisco, CA 94143
- To whom correspondence may be addressed at:
University of California and Howard Hughes Medical Institute, 513 Parnassus Avenue, Box 0795, San Francisco, CA 94143-0795. E-mail:
| | - Lewis L. Lanier
- *Department of Microbiology and Immunology and Cancer Research Institute
- To whom correspondence may be addressed at:
Department of Microbiology and Immunology, University of California, 513 Parnassus Avenue, Box 0414, San Francisco, CA 94143-0414. E-mail:
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29
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Stewart CA, Vivier E, Colonna M. Strategies of natural killer cell recognition and signaling. Curr Top Microbiol Immunol 2006; 298:1-21. [PMID: 16329183 DOI: 10.1007/3-540-27743-9_1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The participation of natural killer (NK) cells in multiple aspects of innate and adaptive immune responses is supported by the wide array of stimulatory and inhibitory receptors they bear. Here we review the receptor-ligand interactions and subsequent signaling events that culminate in NK effector responses. Whereas some receptor-ligand interactions result in activation of both NK cytotoxicity and cytokine production, others have more subtle effects, selectively activating only one pathway or having distinct context-dependent effects. Recent approaches offer ways to unravel how the integration of complex signaling networks directs the NK response.
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Affiliation(s)
- C A Stewart
- Lab of NK Cells and Innate Immunity, Centre d'Immunologie de Marseille-Luminy, INSERM-CNRS-Univ. Méditerranée, Campus de Luminy, 13288 Marseille, France.
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30
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Abstract
Tolerance of natural killer (NK) cells toward normal cells is mediated through their expression of inhibitory receptors that detect the normal expression of self in the form of class I major histocompatibility complex (MHC-I) molecules on target cells. These MHC-I-binding inhibitory receptors recruit tyrosine phosphatases, which are believed to counteract activating receptor-stimulated tyrosine kinases. The perpetual balance between signals derived from inhibitory and activating receptors controls NK cell responsiveness and provides an interesting paradigm of signaling cross talk. This review summarizes our knowledge of the intracellular mechanisms by which cell surface receptors influence biological responses by NK cells. Special emphasis focuses on the dynamic signaling events at the NK immune synapse and the unique signaling characteristics of specific receptors, such as NKG2D, 2B4, and KIR2DL4.
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Affiliation(s)
- A W MacFarlane
- Fox Chase Cancer Center, Division of Basic Science, Institute for Cancer Research, 333 Cottman Ave., Philadelphia, PA 19111, USA
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31
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Aluoch AO, Whalen MM. Effects of interleukins 2 and 12 on TBT-induced alterations of MAP kinases p38 and p44/42 in human natural killer cells. J Appl Toxicol 2005; 26:132-8. [PMID: 16252257 DOI: 10.1002/jat.1116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
NK cells are lymphocytes in the non-adaptive immune system that protect the body against intracellular pathogens and eliminate tumor cells. Tributyltin (TBT) is a toxic chemical that has been detected in human foods as well as in human blood. The role of TBT in immunosuppression has been described, including inhibition of the human NK-cell cytotoxic function. Previous studies indicated that exposure of NK cells to TBT for 1 h induced progressive and irreversible inhibition of cytotoxic function. However, it was found that if NK cells were incubated in TBT-free media with either IL-2 or IL-12, loss of cytotoxic function was prevented/reversed within 24 h. Molecular studies established that loss of cytotoxic function is accompanied by alteration of MAP kinases (MAPKs) p38 and p44/42 phosphorylation. This study examined whether interleukin-mediated recovery of cytotoxicity involved reversal of tributyltin-altered p38 and p44/42 phosphorylation. The results indicated that there was no substantial IL-2 prevention/reversal of the TBT-induced alteration of phosphorylation of either p38 or p44/42 after either a 24 or 48 h recovery period. Additionally, IL-12 caused no substantial prevention/reversal of the TBT-induced alteration of phosphorylation of the MAPKs seen after either 24 or 48 h. These data suggest that IL-2 and/or IL-12-mediated recovery of NK cytotoxic function is not a result of prevention/reversal of TBT-induced phosphorylation of p38 and p44/42 MAPKs at the 24 or 48 h time points.
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Affiliation(s)
- Aloice O Aluoch
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, USA
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32
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Huntington ND, Xu Y, Nutt SL, Tarlinton DM. A requirement for CD45 distinguishes Ly49D-mediated cytokine and chemokine production from killing in primary natural killer cells. ACTA ACUST UNITED AC 2005; 201:1421-33. [PMID: 15867094 PMCID: PMC2213181 DOI: 10.1084/jem.20042294] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Engagement of receptors on the surface of natural killer (NK) cells initiates a biochemical cascade ultimately triggering cytokine production and cytotoxicity, although the interrelationship between these two outcomes is currently unclear. In this study we investigate the role of the cell surface phosphatase CD45 in NK cell development and intracellular signaling from activating receptors. Stimulation via the major histocompatibility complex I-binding receptor, Ly49D on CD45(-/-) primary NK cells resulted in the activation of phosphoinositide-3-kinase and normal cytotoxicity but failed to elicit a range of cytokines and chemokines. This blockage is associated with impaired phosphorylation of Syk, Vav1, JNK, and p38, which mimics data obtained using inhibitors of the src-family kinases (SFK). These data, supported by analogous findings after CD16 and NKG2D stimulation of CD45(-/-) primary NK cells, place CD45 upstream of SFK in NK cells after stimulation via immunoreceptor tyrosine-based activation motif-containing receptors. Thus we identify CD45 as a pivotal enzyme in eliciting a precise subset of NK cell responses.
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MESH Headings
- Animals
- Antigens, Ly/immunology
- Antigens, Ly/metabolism
- Cell Cycle Proteins/metabolism
- Cells, Cultured
- Chemokines/metabolism
- Cytokines/metabolism
- Cytotoxicity Tests, Immunologic
- Enzyme Precursors/metabolism
- Enzyme-Linked Immunosorbent Assay
- Flow Cytometry
- Immunoprecipitation
- Intracellular Signaling Peptides and Proteins
- JNK Mitogen-Activated Protein Kinases/metabolism
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Lectins, C-Type
- Leukocyte Common Antigens/immunology
- Leukocyte Common Antigens/metabolism
- MAP Kinase Kinase 4
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mitogen-Activated Protein Kinase Kinases/metabolism
- NK Cell Lectin-Like Receptor Subfamily A
- Phosphatidylinositol 3-Kinases/metabolism
- Phosphorylation
- Protein-Tyrosine Kinases/metabolism
- Proto-Oncogene Proteins/metabolism
- Proto-Oncogene Proteins c-vav
- Receptors, NK Cell Lectin-Like
- Signal Transduction/immunology
- Syk Kinase
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Nicholas D Huntington
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3050, Australia.
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33
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Aluoch A, Whalen M. Tributyltin-induced effects on MAP kinases p38 and p44/42 in human natural killer cells. Toxicology 2005; 209:263-77. [PMID: 15795062 DOI: 10.1016/j.tox.2004.12.034] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2004] [Revised: 12/20/2004] [Accepted: 12/30/2004] [Indexed: 11/24/2022]
Abstract
NK cells form a class of lymphocytes that are able to kill tumor cells, virally infected cells and antibody-coated cells without prior sensitization. Tributyltin (TBT) is a toxic chemical that was used in large scale in wood preservation, marine antifouling paints, and slime control in paper mills. TBT has been detected in human foods such as dairy products, meat and fish and detectable levels have been found in human blood. The role of TBT in immunosuppression has been reported and its specific inhibition of the human NK-cell cytotoxic function has also been described. The current studies examined the role of mitogen-activated protein kinases (MAPKs) p38 and p44/42 during TBT-induced inhibition of NK cytotoxic function. Continuous in vitro exposure to 300 nM TBT for 1h decreased the NK cell cytotoxic function with concomitant increases in phosphorylated forms of both p38 and p44/42 but not the total levels of either of these enzymes. Similar results were obtained with 500 nM TBT treatment. A 1 h exposure to 300 nM TBT followed by 24 h in TBT-free media resulted in a further decrease in the cytotoxic function with an accompanying increase in the phosphorylated forms of p38 and p44/42 MAPKs as compared to controls (approximately 50%). However, after 48 h in TBT-free media, the phosphorylation levels of both p44/42 and p38 MAPKs decreased by about 50 and 30%, respectively. NK cell cytotoxic function also continued to decrease with time in TBT-free media. A 24h exposure to 200 nM TBT decreased cytotoxic function of NK cells (>90%) but produced donor-dependent effects on the phosphorylated p38 and p44/42 MAPK levels. These data indicated that in vitro exposures to TBT induced changes in the phosphorylation (activation) states of p38 and p44/42 but not in their overall levels of expression in human NK cells.
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Affiliation(s)
- Aloice Aluoch
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, USA
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34
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Pisegna S, Pirozzi G, Piccoli M, Frati L, Santoni A, Palmieri G. p38 MAPK activation controls the TLR3-mediated up-regulation of cytotoxicity and cytokine production in human NK cells. Blood 2004; 104:4157-64. [PMID: 15315972 DOI: 10.1182/blood-2004-05-1860] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Natural killer (NK) cells are a component of the innate immunity against viral infections through their rapid cytotoxic activity and cytokine production. Although the synthetic double-stranded (ds) RNA polyinosinic-polycytidylic acid (poly I:C), a mimic of a common product of viral infections, is known to rapidly up-regulate their in vivo functions, NK cell ability to directly respond to dsRNA is still mostly unknown. Our results show that treatment with poly I:C significantly up-regulates both natural and CD16-mediated cytotoxicity of highly purified human NK cells. Poly I:C also induces the novel capability of producing CXCL10 chemokine in human NK cells and synergistically enhances interferon-gamma (IFN-gamma) production induced by either adaptive or innate cytokines. In accordance with the expression of Toll-like receptor-3 (TLR3) and of TRIF/TICAM-1 adaptor, poly I:C stimulation induces the activation of interferon regulatory factor-3 (IRF-3) transcription factor and of p38 mitogen-activated protein kinase (MAPK) in human NK cells. Finally, we demonstrate that p38 MAPK activity is required for the dsRNA-dependent enhancement of cytotoxicity and CXCL10 production. The occurrence of dsRNA-induced signaling and functional events closely correlates with the TLR3 mRNAprofile in different NK cell populations. Taken together, these data identify p38 as a central component of NK cell ability to directly respond to dsRNA pathogen-associated molecular pattern (PAMP).
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Affiliation(s)
- Simona Pisegna
- Department of Experimental Medicine and Pathology, University La Sapienza, Viale Regina Elena, 324, 00161 Rome, Italy
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35
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Bream JH, Curiel RE, Yu CR, Egwuagu CE, Grusby MJ, Aune TM, Young HA. IL-4 synergistically enhances both IL-2- and IL-12-induced IFN-gamma expression in murine NK cells. Blood 2003; 102:207-14. [PMID: 12637316 DOI: 10.1182/blood-2002-08-2602] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Interleukin-4 (IL-4) is thought to influence T and natural killer (NK) cells by down-regulating T helper 1 (Th1)-type cytokines like interferon-gamma (IFN-gamma). While investigating IL-4 regulation of IFN-gamma expression, we found that IL-4 synergized with IL-2 or IL-12 to enhance IFN-gamma production and mRNA expression in spleen-derived, IL-2-cultured NK cells, as well as negatively sorted fresh DX5+/CD3- NK cells albeit at lower levels. The positive effect of IL-4 on IL-2-induced IFN-gamma production was dependent upon signal transducer and activator of transcription 6 (Stat6) because this response was virtually abrogated in Stat6-/- mice. Notably, though, IL-12 plus IL-4 synergy on IFN-gamma expression was intact in Stat6-/- mice. In exploring possible molecular mechanisms to account for the synergistic effects of IL-4 on murine NK cells, we found that IL-2 plus IL-4 stimulation resulted in a modest increase in tyrosine phosphorylation of Stat5, while IL-12 plus IL-4 treatment resulted in a more substantial increase in tyrosine-phosphorylated Stat4. Finally, to identify regions of the IFN-gamma promoter that may be involved, NK cells from human IFN-gamma promoter/luciferase transgenic mice were treated with cytokines. NK cells from proximal (-110 to +64) promoter region mice did not respond to cytokine stimulation; however, the intact -565 to +64 IFN-gamma promoter responded synergistically to IL-2 plus IL-4 and to IL-12 plus IL-4 in NK cells. These data demonstrate a role for IL-4 in enhancing IFN-gamma expression in murine NK cells that is partially dependent on Stat6 in IL-2 costimulation and completely independent of Stat6 in IL-12 costimulations.
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Affiliation(s)
- Jay H Bream
- Laboratory of Experimental Immunology, Center for Cancer Research, National Cancer Institute, Building 560, Room 31-23, Frederick, MD 21702-1201, USA.
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36
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Salmon RA, Guo X, Teh HS, Schrader JW. The p38 mitogen-activated protein kinases can have opposing roles in the antigen-dependent or endotoxin-stimulated production of IL-12 and IFN-γ. Eur J Immunol 2001. [DOI: 10.1002/1521-4141(200111)31:11<3218::aid-immu3218>3.0.co;2-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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