1
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Yang Y, Shi H, Zhou Y, Zhou Y. Expression of HLA-DR and KLRG1 enhances the cytotoxic potential and cytokine secretion capacity of CD3 + T cells in tuberculosis patients. Int Immunopharmacol 2024; 133:112115. [PMID: 38652959 DOI: 10.1016/j.intimp.2024.112115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/26/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND Human T cells play an important role in immunity against tuberculosis (TB) infection. Activating receptor HLA-DR and inhibitory receptor KLRG1 are critical regulators of T cell function during viral infection and tumorigenesis, but they have been less studied in TB infection. METHODS In this study, we explored the relationship between CD3+ T cell expression of HLA-DR and KLRG1 receptors and function against TB infection. Flow cytometry was conducted to assess the immunomodulatory effects of HLA-DR and KLRG1 receptors on CD3+ T cells in patients with different TB infection status. RESULTS We found activating receptors HLA-DR, NKG2C, CD57 and NKP46, and inhibitory receptors KLRG1 and KIR on CD3+ T cells in different TB infection status showed different distribution patterns; the cytotoxic potential and cytokine secretion capacity of CD3+ T cells after Mtb-specific antigen stimulation were significantly enhanced in TB infection groups. Further studies revealed HLA-DR+ T and KLRG1+ T cells expressed higher activating and inhibitory receptors than the negative population. In addition, the expression of cytotoxic potential and cytokine secretion capacity of HLA-DR+ T and KLRG1+ T cells was significantly higher than that of HLA-DR- T and KLRG1- T cells. CONCLUSIONS Expression of HLA-DR and KLRG1 enhances the cytotoxic potential and cytokine secretion capacity of CD3+ T cells in TB patients, suggesting CD3+ T cells expressing HLA-DR and KLRG1 are important effector cell phenotypes involved in the host anti-TB infection. HLA-DR and KLRG1 expressed by CD3+ T cells may be potential predictive markers of TB disease progression and clinical immune assessment.
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Affiliation(s)
- Yiqi Yang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou 310053, China; Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang 310014, China
| | - Hanlu Shi
- Clinical Research Center, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 360000, China
| | - Yu Zhou
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang 310014, China.
| | - Yonglie Zhou
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang 310014, China.
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2
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Mehanna N, Pradhan A, Kaur R, Kontopoulos T, Rosati B, Carlson D, Cheung NK, Xu H, Bean J, Hsu K, Le Luduec JB, Vorkas CK. Loss of circulating CD8α + NK cells during human Mycobacterium tuberculosis infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.16.588542. [PMID: 38659858 PMCID: PMC11042275 DOI: 10.1101/2024.04.16.588542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Natural Killer (NK) cells can recognize and kill Mtb-infected cells in vitro, however their role after natural human exposure has not been well-studied. To identify Mtb-responsive NK cell populations, we analyzed the peripheral blood of healthy household contacts of active Tuberculosis (TB) cases and source community donors in an endemic region of Port-au-Prince, Haiti by flow cytometry. We observed higher CD8α expression on NK cells in putative resistors (IGRA- contacts) with a progressive loss of these circulating cells during household-associated latent infection and disease. In vitro assays and CITE-seq analysis of CD8α+ NK cells demonstrated enhanced maturity, cytotoxic gene expression, and response to cytokine stimulation relative to CD8α- NK cells. CD8α+ NK cells also displayed dynamic surface expression dependent on MHC I in contrast to conventional CD8+ T cells. Together, these results support a specialized role for CD8α+ NK cell populations during Mtb infection correlating with disease resistance.
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Affiliation(s)
- Nezar Mehanna
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
| | - Atul Pradhan
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
| | - Rimanpreet Kaur
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
| | - Theodota Kontopoulos
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - Barbara Rosati
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
| | - David Carlson
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
| | - Nai-Kong Cheung
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - Hong Xu
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - James Bean
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - Katherine Hsu
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - Jean-Benoit Le Luduec
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065
| | - Charles Kyriakos Vorkas
- Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, 11794
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY 11794
- Center for Infectious Diseases, Stony Brook University, Stony Brook, NY, 11794
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3
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Noel ODV, Hassouneh Z, Svatek RS, Mukherjee N. Innate Lymphoid Cells in Bladder Cancer: From Mechanisms of Action to Immune Therapies. Cancer Immunol Res 2024; 12:149-160. [PMID: 38060011 DOI: 10.1158/2326-6066.cir-23-0414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/10/2023] [Accepted: 10/24/2023] [Indexed: 12/08/2023]
Abstract
Bladder tumors have a high mutational burden and tend to be responsive to immune therapies; however, response rates remain modest. To date, immunotherapy in bladder cancer has largely focused on enhancing T-cell immune responses in the bladder tumor microenvironment. It is anticipated that other immune cells, including innate lymphoid cells (ILC), which play an important role in bladder oncogenesis and tumor suppression, could be targeted to improve response to existing therapies. ILCs are classified into five groups: natural killer cells, ILC1s, ILC2s, ILC3s, and lymphoid tissue inducer cells. ILCs are pleiotropic and play dual and sometimes paradoxical roles in cancer development and progression. Here, a comprehensive discussion of the current knowledge and recent advancements in understanding the role of ILCs in bladder cancer is provided. We discuss the multifaceted roles that ILCs play in bladder immune surveillance, tumor protection, and immunopathology of bladder cancer. This review provides a rationale for targeting ILCs in bladder cancer, which is relevant for other solid tumors.
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Affiliation(s)
- Onika D V Noel
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas
| | - Zaineb Hassouneh
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health San Antonio, San Antonio, Texas
| | - Robert S Svatek
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas
| | - Neelam Mukherjee
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas
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4
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Ijaz A, Broere F, Rutten VPMG, Jansen CA, Veldhuizen EJA. Perforin and granzyme A release as novel tool to measure NK cell activation in chickens. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 149:105047. [PMID: 37625470 DOI: 10.1016/j.dci.2023.105047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Natural killer (NK) cells are cytotoxic lymphocytes that are present in the circulation but also in many organs including spleen and gut, where they play an important role in the defense against infections. Interaction of NK cells with target cells leads to degranulation, which results in the release of perforin and granzymes in the direct vicinity of the target cell. Chicken NK cells have many characteristics similar to their mammalian counterparts and based on similarities with studies on human NK cells, surface expression of CD107 was always presumed to correlate with granule release. However, proof of this degranulation or in fact the actual presence of perforin (PFN) and granzyme A (GrA) in chicken NK cells and their release upon activation is lacking. Therefore, the purpose of the present study was to determine the presence of perforin and granzyme A in primary chicken NK cells and to measure their release upon degranulation, as an additional tool to study the function of chicken NK cells. Using human specific antibodies against PFN and GrA in fluorescent and confocal microscopy resulted in staining in chicken NK cells. The presence of PFN and GrA was also confirmed by Western blot analyses and its gene expression by PCR. Stimulation of NK cells with the pectin SPE6 followed by flow cytometry resulted in reduced levels of intracellular PFN and GrA, suggesting release of PFN and GrA. Expression of PFN and GrA reversely correlated with increased surface expression of the lysosomal marker CD107. Finally it was shown that the supernatant of activated NK cells, containing the NK cell granule content including PFN and GrA, was able to kill Escherichia coli. This study correlates PFN and GrA release to activation of chicken NK cells and establishes an additional tool to study activity of cytotoxic lymphocytes in chickens.
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Affiliation(s)
- Adil Ijaz
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Femke Broere
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Victor P M G Rutten
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands; Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Christine A Jansen
- Cell Biology and Immunology Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, the Netherlands
| | - Edwin J A Veldhuizen
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
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5
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Chen YC, Weng SW, Ding JY, Lee CH, Ku CL, Huang WC, You HL, Huang WT. Clinicopathological Manifestations and Immune Phenotypes in Adult-Onset Immunodeficiency with Anti-interferon-γ Autoantibodies. J Clin Immunol 2022; 42:672-683. [DOI: 10.1007/s10875-022-01210-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 01/16/2022] [Indexed: 10/19/2022]
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6
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Kust SA, Streltsova MA, Panteleev AV, Karpina NL, Lyadova IV, Sapozhnikov AM, Kovalenko EI. HLA-DR-Positive NK Cells Expand in Response to Mycobacterium Tuberculosis Antigens and Mediate Mycobacteria-Induced T Cell Activation. Front Immunol 2021; 12:662128. [PMID: 34012446 PMCID: PMC8128146 DOI: 10.3389/fimmu.2021.662128] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/14/2021] [Indexed: 12/27/2022] Open
Abstract
NK cells play an important role in the control of tuberculosis infection: they are not only able to kill the infected cells, but also control the activity of macrophages and development of the adaptive immune response. Still, there is little information on the role of specific NK cell subsets in this network. In this study, we focused on the mycobacteria-driven responses of the NK cells expressing HLA-DR – a type of MHC class II. We have revealed that this subset is increased in the peripheral blood of patients with primary diagnosed tuberculosis, and expands in response to in vitro stimulation with ultrasonically destroyed Mycobacterium tuberculosis cells (sonicate). The expanded HLA-DR+ NK cells had less differentiated phenotype, higher proliferative activity and increased expression of NKp30 and NKp46 receptors. HLA-DR+CD56dim NK cells showed higher IFNγ production and degranulation level than the respective HLA-DR− NK cells in response to both 24 h and 7 day stimulation with sonicate, while HLA-DR+CD56bright NK cells mostly demonstarted similar high responsiveness to the same stimulating conditions as their HLA-DR−CD56bright counterparts. After preliminary incubation with destroyed mycobacteria, cytokine-activated HLA-DR-expressing NK cells were able to mediate mycobacteria-induced and HLA-DR-dependent cytokine production in autologous CD4+ T cells. Thus, functionally active HLA-DR+ cells seem to be one of the NK cell subsets providing an important link to the adaptive immunity.
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Affiliation(s)
- Sofya A Kust
- Laboratory of Cell Interactions, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Science, Moscow, Russia
| | - Maria A Streltsova
- Laboratory of Cell Interactions, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Science, Moscow, Russia
| | - Alexander V Panteleev
- Laboratory of Biotechnology, Central Tuberculosis Research Institute, Moscow, Russia
| | - Natalya L Karpina
- Diagnostic Outpatient Department, Central Tuberculosis Research Institute, Moscow, Russia
| | - Irina V Lyadova
- Laboratory of Biotechnology, Central Tuberculosis Research Institute, Moscow, Russia.,Laboratory of Cellular and Molecular Basis of Histogenesis, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - Alexander M Sapozhnikov
- Laboratory of Cell Interactions, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Science, Moscow, Russia
| | - Elena I Kovalenko
- Laboratory of Cell Interactions, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Science, Moscow, Russia
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7
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Phenotype of Peripheral NK Cells in Latent, Active, and Meningeal Tuberculosis. J Immunol Res 2021; 2021:5517856. [PMID: 34007850 PMCID: PMC8100419 DOI: 10.1155/2021/5517856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 01/13/2023] Open
Abstract
The mechanisms underlying the immunopathology of tuberculous meningitis (TBM), the most severe clinical form of extrapulmonary tuberculosis (TB), are not understood. It is currently believed that the spread of Mycobacterium tuberculosis (Mtb) from the lung is an early event that occurs before the establishment of adaptive immunity. Hence, several innate immune mechanisms may participate in the containment of Mtb infection and prevent extrapulmonary disease manifestations. Natural killer (NK) cells participate in defensive processes that distinguish latent TB infection (LTBI) from active pulmonary TB (PTB). However, their role in TBM is unknown. Here, we performed a cross-sectional analysis of circulating NK cellCID="C008" value="s" phenotype in a prospective cohort of TBM patients (n = 10) using flow cytometry. Also, we addressed the responses of memory-like NK cell subpopulations to the contact with Mtb antigens in vitro. Finally, we determined plasma levels of soluble NKG2D receptor ligands in our cohort of TBM patients by enzyme-linked immunosorbent assay (ELISA). Our comparative groups consisted of individuals with LTBI (n = 11) and PTB (n = 27) patients. We found that NK cells from TBM patients showed lower absolute frequencies, higher CD69 expression, and poor expansion of the CD45RO+ memory-like subpopulation upon Mtb exposure in vitro compared to LTBI individuals. In addition, a reduction in the frequency of CD56brightCD16− NK cells characterized TBM patients but not LTBI or PTB subjects. Our study expands on earlier reports about the role of NK cells in TBM showing a reduced frequency of cytokine-producing cells compared to LTBI and PTB.
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8
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Tang Y, Jiang M, Jiang HM, Ye ZJ, Huang YS, Li XS, Qin BY, Zhou RS, Pan HF, Zheng DY. The Roles of circRNAs in Liver Cancer Immunity. Front Oncol 2021; 10:598464. [PMID: 33614486 PMCID: PMC7890029 DOI: 10.3389/fonc.2020.598464] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) are stable covalently closed non-coding RNAs (ncRNAs). Many studies indicate that circRNAs are involved in the pathological and physiological processes of liver cancer. However, the functions of circRNAs in liver cancer immunity are less known. In this review, we summarized the functions of circRNAs in liver cancer, including proliferative, metastasis and apoptosis, liver cancer stemness, cell cycle, immune evasion, glycolysis, angiogenesis, drug resistance/sensitizer, and senescence. Immune escape is considered to be one of the hallmarks of cancer development, and circRNA participates in the immune escape of liver cancer cells by regulating natural killer (NK) cell function. CircRNAs may provide new ideas for immunotherapy in liver cancer.
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Affiliation(s)
- Ying Tang
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Mei Jiang
- Department of Oncology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hai-Mei Jiang
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zeng Jie Ye
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu-Sheng Huang
- Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiu-Shen Li
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Bin-Yu Qin
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui-Sheng Zhou
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hua-Feng Pan
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Da-Yong Zheng
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Hepatopancreatobiliary, Cancer Center, Southern Medical University, Guangzhou, China.,Department of Hepatology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, China
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9
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Theresine M, Patil ND, Zimmer J. Airway Natural Killer Cells and Bacteria in Health and Disease. Front Immunol 2020; 11:585048. [PMID: 33101315 PMCID: PMC7546320 DOI: 10.3389/fimmu.2020.585048] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 09/08/2020] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells are innate lymphoid cells at the interface between innate and adaptive immunity and mostly studied for their important roles in viral infections and malignant tumors. They can kill diseased cells and produce cytokines and chemokines, thereby shaping the adaptive immune response. Nowadays, NK cells are considered as a strong weapon for cancer immunotherapy and can for example be transduced to express tumor-specific chimeric antigen receptors or harnessed with therapeutic antibodies such as the so-called NK engagers. Whereas a large body of literature exists about the antiviral and antitumoral properties of NK cells, their potential role in bacterial infections is not that well delineated. Furthermore, NK cells are much more heterogeneous than previously thought and have tissue-characteristic features and phenotypes. This review gives an overview of airway NK cells and their position within the immunological army dressed against bacterial infections in the upper and predominantly the lower respiratory tracts. Whereas it appears that in several infections, NK cells play a non-redundant and protective role, they can likewise act as rather detrimental. The use of mouse models and the difficulty of access to human airway tissues for ethical reasons might partly explain the divergent results. However, new methods are appearing that are likely to reduce the heterogeneity between studies and to give a more coherent picture in this field.
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Affiliation(s)
- Maud Theresine
- CG I Group, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Neha D Patil
- CG I Group, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Jacques Zimmer
- CG I Group, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
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10
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Bickett TE, McLean J, Creissen E, Izzo L, Hagan C, Izzo AJ, Silva Angulo F, Izzo AA. Characterizing the BCG Induced Macrophage and Neutrophil Mechanisms for Defense Against Mycobacterium tuberculosis. Front Immunol 2020; 11:1202. [PMID: 32625209 PMCID: PMC7314953 DOI: 10.3389/fimmu.2020.01202] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/14/2020] [Indexed: 12/16/2022] Open
Abstract
The live attenuated Mycobacterium bovis strain, Bacille Calmette Guérin (BCG) is a potent innate immune stimulator. In the C57BL/6 mouse model of tuberculosis, BCG vaccination leads to a significant reduction of Mycobacterium tuberculosis burden after aerogenic infection. Our studies indicated that BCG induced protection against pulmonary tuberculosis was independent of T cells and present as early as 7 days after vaccination. This protection showed longevity, as it did not wane when conventional T cell and TNF-α deficient mice were infected 30 days post-vaccination. As BCG induced mycobacterial killing after 7 days, this study investigated the contributions of the innate immune system after BCG vaccination to better understand mechanisms required for mycobacterial killing. Subcutaneous BCG inoculation resulted in significant CD11b+F4/80+ monocyte subset recruitment into the lungs within 7 days. Further studies revealed that killing of mycobacteria was dependent on the viability of BCG, because irradiated BCG did not have the same effect. Although others have identified BCG as a facilitator of trained innate immunity, we found that BCG reduced the mycobacterial burden in the absence of mechanisms required for trained innate immunity, highlighting a role for macrophages and neutrophils for vaccine induced killing of M. tuberculosis.
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Affiliation(s)
- Thomas E Bickett
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Jennifer McLean
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Elizabeth Creissen
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Linda Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Cassidy Hagan
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Antonio J Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Fabiola Silva Angulo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Angelo A Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
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11
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Estévez O, Anibarro L, Garet E, Martínez A, Pena A, Barcia L, Peleteiro M, González-Fernández Á. Multi-parameter flow cytometry immunophenotyping distinguishes different stages of tuberculosis infection. J Infect 2020; 81:57-71. [PMID: 32330526 DOI: 10.1016/j.jinf.2020.03.064] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVES To identify new potential host biomarkers in blood to discriminate between active TB patients, uninfected (NoTBI) and latently infected contacts (LTBI). METHODS A blood cell count was performed to study parent leukocyte populations. Peripheral blood mononuclear cells (PBMCs) were isolated and a multi-parameter flow cytometry assay was conducted to study the distribution of basal and Mycobacterium tuberculosis (Mtb)-stimulated lymphocytes. Differences between groups and the area under the ROC curve (AUC) were investigated to assess the diagnostic accuracy. RESULTS Active TB patients presented higher Monocyte-to-lymphocyte and Neutrophil-to-lymphocyte ratios than LTBI and NoTBI contacts (p<0.0001; AUC>0.8). Lymphocyte subsets with differences (p >0.05; AUC >0.7) between active TB and both contact groups include the basal distribution of Th1/Th2 ratio, Th1-Th17, CD4+ Central Memory (TCM) or MAIT cells. Expression of CD154 is increased in Mtb-activated CD4+ TCM and Effector Memory T cells in active TB and LTBI compared to NoTBI. In CD4+T cells, expression of CD154 showed a higher accuracy than IFNγ to discriminate Mtb-specific activation. CONCLUSIONS We identified different cell subsets with potential use in tuberculosis diagnosis. Among them, distribution of CD4 TCM cells and their expression of CD154 after Mtb-activation are the most promising candidates.
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Affiliation(s)
- Olivia Estévez
- CINBIO, Universidade de Vigo, Immunology Group, Campus universitario Lagoas, Marcosende, 36310 Vigo, Spain; Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain
| | - Luis Anibarro
- Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain; GEIM -Grupo de Estudio de Micobacterias de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica, Spain; Tuberculosis Unit, Department of Infectious Diseases and Internal Medicine, Pontevedra Hospital Complex, Pontevedra, Spain
| | - Elina Garet
- CINBIO, Universidade de Vigo, Immunology Group, Campus universitario Lagoas, Marcosende, 36310 Vigo, Spain; Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain
| | - Amparo Martínez
- CINBIO, Universidade de Vigo, Immunology Group, Campus universitario Lagoas, Marcosende, 36310 Vigo, Spain; Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain
| | - Alberto Pena
- Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain; Tuberculosis Unit, Department of Infectious Diseases and Internal Medicine, Pontevedra Hospital Complex, Pontevedra, Spain
| | - Laura Barcia
- Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain; Tuberculosis Unit, Department of Infectious Diseases and Internal Medicine, Pontevedra Hospital Complex, Pontevedra, Spain
| | - Mercedes Peleteiro
- CINBIO, Universidade de Vigo, Flow Cytometry Core Facility, Campus universitario Lagoas, Marcosende, 36310 Vigo, Spain
| | - África González-Fernández
- CINBIO, Universidade de Vigo, Immunology Group, Campus universitario Lagoas, Marcosende, 36310 Vigo, Spain; Instituto de Investigación Sanitaria Galicia Sur (IIS-GS), Spain.
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12
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Manukyan G, Martirosyan A, Slavik L, Margaryan S, Ulehlova J, Mikulkova Z, Hlusi A, Papajik T, Kriegova E. Anti-domain 1 β2 glycoprotein antibodies increase expression of tissue factor on monocytes and activate NK Cells and CD8+ cells in vitro. AUTOIMMUNITY HIGHLIGHTS 2020; 11:5. [PMID: 32127041 PMCID: PMC7065342 DOI: 10.1186/s13317-020-00128-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/19/2020] [Indexed: 02/08/2023]
Abstract
Background β2-Glycoprotein I (β2GPI) represents the major antigenic target for antiphospholipid antibodies (aPL), with domain 1 (D1) being identified as a risk factor for thrombosis and pregnancy complications in APS. We aimed to analyse the ability of aPL, and particularly anti-D1 β2GPI, to stimulate prothrombotic and proinflammatory activity of immune cells in vitro. Methods Peripheral blood mononuclear cells (PBMCs) from 11 healthy individuals were incubated with: (1) “anti-D1(+)”—pooled plasma derived from patients suspected of having APS contained anticardiolipin antibodies (aCL), lupus anticoagulant (LA), anti-β2GPI and anti-D1 β2GPI; (2) “anti-D1(−)”—pooled plasma from patients suspected of having APS contained aCL, LA, anti-β2GPI, and negative for anti-D1 β2GPI; (3) “seronegative”—negative for aPL. Results The presence of anti-D1(+) and anti-D1(−) plasma resulted in increased HLA-DR and CD11b on monocytes. While only anti-D1(+) plasma markedly increased the percentage and median fluorescence intensity (MFI) of CD142 (tissue factor, TF) on monocytes in comparison with those cultured with anti-D1(−) and seronegative plasma. Anti-D1(+) plasma resulted in increased percentage and MFI of activation marker CD69 on NK and T cytotoxic cells. Expression of IgG receptor FcγRIII(CD16) on monocytes and NK cells was down-regulated by the anti-D1(+) plasma. Conclusions Taking together, our study shows the ability of patient-derived aPL to induce immune cell activation and TF expression on monocytes. For the first time, we demonstrated the influence of anti-D1 β2GPI on the activation status of monocytes, NK and cytotoxic T cells. Our findings further support a crucial role of D1 epitope in the promotion of thrombosis and obstetrical complications in APS.
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Affiliation(s)
- Gayane Manukyan
- Laboratory of Molecular and Cellular Immunology, Institute of Molecular Biology NAS RA, 7 Hasratyan St., 0014, Yerevan, Armenia. .,Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic.
| | - Anush Martirosyan
- Laboratory of Molecular and Cellular Immunology, Institute of Molecular Biology NAS RA, 7 Hasratyan St., 0014, Yerevan, Armenia
| | - Ludek Slavik
- Department of Hemato-oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Sona Margaryan
- Laboratory of Molecular and Cellular Immunology, Institute of Molecular Biology NAS RA, 7 Hasratyan St., 0014, Yerevan, Armenia.,Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Jana Ulehlova
- Department of Hemato-oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Zuzana Mikulkova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Antonin Hlusi
- Department of Hemato-oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Tomas Papajik
- Department of Hemato-oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
| | - Eva Kriegova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc and Faculty Hospital, Olomouc, Czech Republic
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13
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Choreño-Parra JA, Weinstein LI, Yunis EJ, Zúñiga J, Hernández-Pando R. Thinking Outside the Box: Innate- and B Cell-Memory Responses as Novel Protective Mechanisms Against Tuberculosis. Front Immunol 2020; 11:226. [PMID: 32117325 PMCID: PMC7034257 DOI: 10.3389/fimmu.2020.00226] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/28/2020] [Indexed: 12/31/2022] Open
Abstract
Tuberculosis (TB) is currently the deadliest infectious disease worldwide. Failure to create a highly effective vaccine has limited the control of the TB epidemic. Historically, the vaccine field has relied on the paradigm that IFN-γ-mediated CD4+ T cell memory responses are the principal correlate of protection in TB. Nonetheless, the demonstration that other cellular subsets offer protective memory responses against Mycobacterium tuberculosis (Mtb) is emerging. Among these are memory-like features of macrophages, myeloid cell precursors, natural killer (NK) cells, and innate lymphoid cells (ILCs). Additionally, the dynamics of B cell memory responses have been recently characterized at different stages of the clinical spectrum of Mtb infection, suggesting a role for B cells in human TB. A better understanding of the immune mechanisms underlying such responses is crucial to better comprehend protective immunity in TB. Furthermore, targeting immune compartments other than CD4+ T cells in TB vaccine strategies may benefit a significant proportion of patients co-infected with Mtb and the human immunodeficiency virus (HIV). Here, we summarize the memory responses of innate immune cells and B cells against Mtb and propose them as novel correlates of protection that could be harnessed in future vaccine development programs.
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Affiliation(s)
- José Alberto Choreño-Parra
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico.,Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - León Islas Weinstein
- Section of Experimental Pathology, Department of Pathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Edmond J Yunis
- Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute, Boston, MA, United States.,Department of Pathology, Harvard Medical School, Boston, MA, United States
| | - Joaquín Zúñiga
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico.,Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Mexico City, Mexico
| | - Rogelio Hernández-Pando
- Section of Experimental Pathology, Department of Pathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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14
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Mulcahy EM, Cooley MA, McGuire H, Asad S, Fazekas de St Groth B, Beggs SA, Roddam LF. Widespread alterations in the peripheral blood innate immune cell profile in cystic fibrosis reflect lung pathology. Immunol Cell Biol 2019; 97:416-426. [PMID: 30633378 DOI: 10.1111/imcb.12230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 07/30/2018] [Accepted: 12/09/2018] [Indexed: 11/26/2022]
Abstract
Cystic fibrosis (CF) is caused by mutations to the CF transmembrane conductance regulator (CFTR) gene. CFTR is known to be expressed on multiple immune cell subtypes, dendritic cells, monocytes/macrophages, neutrophils and lymphocytes. We hypothesized that the lack of CFTR expression on peripheral blood innate immune cells would result in an altered cell profile in the periphery and that this profile would reflect lung pathology. We performed a flow cytometric phenotypic investigation of innate immune cell proportions in peripheral blood collected from 17 CF patients and 15 age-matched healthy controls. We observed significant differences between CF patients and controls in the relative proportions of natural killer (NK) cells, monocytes and their subsets, with significant correlations observed between proportions of NK and monocyte cell subsets and lung function (forced expiratory volume in 1 sec, % predicted; FEV1% predicted) in CF patients. This study demonstrates the widespread nature of immune dysregulation in CF and provides a basis for identification of potential therapeutic targets. Modulation of the distinct CF-related immune cell phenotype identified could also be an important biomarker for evaluating CFTR-targeted drug efficacy.
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Affiliation(s)
- Emily M Mulcahy
- School of Medicine, University of Tasmania, Hobart, TAS, Australia.,Royal Hobart Hospital, Hobart, TAS, Australia
| | | | - Helen McGuire
- Centenary Institute, Newtown, NSW, Australia.,Discipline of Pathology, University of Sydney, Sydney, NSW, Australia
| | | | - Barbara Fazekas de St Groth
- Centenary Institute, Newtown, NSW, Australia.,Discipline of Pathology, University of Sydney, Sydney, NSW, Australia
| | - Sean A Beggs
- School of Medicine, University of Tasmania, Hobart, TAS, Australia.,Royal Hobart Hospital, Hobart, TAS, Australia
| | - Louise F Roddam
- School of Medicine, University of Tasmania, Hobart, TAS, Australia
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15
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Evidence of functional cell-mediated immune responses to nontypeable Haemophilus influenzae in otitis-prone children. PLoS One 2018; 13:e0193962. [PMID: 29621281 PMCID: PMC5886403 DOI: 10.1371/journal.pone.0193962] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/21/2018] [Indexed: 01/02/2023] Open
Abstract
Otitis media (OM) remains a common paediatric disease, despite advances in vaccinology. Susceptibility to recurrent acute OM (rAOM) has been postulated to involve defective cell-mediated immune responses to common otopathogenic bacteria. We compared the composition of peripheral blood mononuclear cells (PBMC) from 20 children with a history of rAOM (otitis-prone) and 20 healthy non-otitis-prone controls, and assessed innate and cell-mediated immune responses to the major otopathogen nontypeable Haemophilus influenzae (NTHi). NTHi was a potent stimulator of inflammatory cytokine secretion from PBMC within 4 hours, with no difference in cytokine levels produced between PBMC from cases or controls. In the absence of antigen stimulation, otitis-prone children had more circulating Natural Killer (NK) cells (p<0.01), particularly NKdim (CD56lo) cells (p<0.01), but fewer CD4+ T cells (p<0.01) than healthy controls. NTHi challenge significantly increased the proportion of activated (CD107a+) NK cells in otitis-prone and non-otitis-prone children (p<0.01), suggesting that NK cells from otitis-prone children are functional and respond to NTHi. CD8+ T cells and NK cells from both cases and controls produced IFNγ in response to polyclonal stimulus (Staphylococcal enterotoxin B; SEB), with more IFNγ+ CD8+ T cells present in cases than controls (p<0.05) but similar proportions of IFNγ+ NK cells. Otitis-prone children had more circulating IFNγ-producing NK cells (p<0.05) and more IFNγ-producing CD4+ (p<0.01) or CD8+ T-cells (p<0.05) than healthy controls. In response to SEB, more CD107a-expressing CD8+ T cells were present in cases than controls (p<0.01). Despite differences in PBMC composition, PBMC from otitis-prone children mounted innate and T cell-mediated responses to NTHi challenge that were comparable to healthy children. These data provide evidence that otitis-prone children do not have impaired functional cell mediated immunity.
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16
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Choreño Parra JA, Martínez Zúñiga N, Jiménez Zamudio LA, Jiménez Álvarez LA, Salinas Lara C, Zúñiga J. Memory of Natural Killer Cells: A New Chance against Mycobacterium tuberculosis? Front Immunol 2017; 8:967. [PMID: 28855906 PMCID: PMC5558047 DOI: 10.3389/fimmu.2017.00967] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/28/2017] [Indexed: 12/19/2022] Open
Abstract
Natural killer (NK) cells are lymphocytes of the innate immune system, which play an important role in the initial defense against a wide variety of pathogens, including viruses and intracellular bacteria. NK cells produce cytokines that enhance immune responses directed toward pathogens and also exert cytotoxic activity against infected cells, thereby eliminating the reservoir of infection. Their role in defense against Mycobacterium tuberculosis (Mtb) has been recently studied, and there is increasing evidence that highlight the importance of NK cell function during pulmonary tuberculosis (PTB), especially in the absence of optimal T-cell responses. Additionally, in the last years, it has been observed that NK cells mediate secondary responses against antigens to which they were previously exposed, an ability classically attributed to lymphocytes of the adaptive branch of immunity. This phenomenon, called “innate memory,” could have important implications in the efforts to develop therapies and vaccines to improve the initial phases of immune reactions against different microorganisms, especially those to which there is not yet available vaccines to prevent infection, as is the case for tuberculosis. Therefore, the possibility of inducing memory-like NK cells ready to act prior to contact with Mtb or during the earliest stages of infection becomes quite interesting. However, our understanding of the mechanisms of innate memory remains incomplete. Here, we review recent literature about the mechanisms involved in the formation and maintenance of NK cell memory and the role of these cells in the immune response during tuberculosis. Finally, we discuss if the current evidence is sufficient to substantiate that NK cells exert more rapid and robust secondary responses after consecutive encounters with Mtb.
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Affiliation(s)
- José Alberto Choreño Parra
- Laboratory of Clinical Immunology I, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico.,Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas, Mexico City, Mexico
| | - Nayeli Martínez Zúñiga
- Brain Bank, Department of National Laboratories of Experimental Services, Centro de Investigación y de Estudios Avanzados (CINVESTAV), Instituto Politécnico Nacional, Mexico City, Mexico
| | - Luis Antonio Jiménez Zamudio
- Laboratory of Clinical Immunology I, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Luis Armando Jiménez Álvarez
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas, Mexico City, Mexico
| | - Citlaltepetl Salinas Lara
- Department of Pathology, Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez", Mexico City, Mexico
| | - Joaquín Zúñiga
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas, Mexico City, Mexico
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17
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Abstract
Tuberculosis remains one of the greatest threats to human health. The causative bacterium, Mycobacterium tuberculosis, is acquired by the respiratory route. It is exquisitely adapted to humans and is a prototypic intracellular pathogen of macrophages, with alveolar macrophages being the primary conduit of infection and disease. However, M. tuberculosis bacilli interact with and are affected by several soluble and cellular components of the innate immune system which dictate the outcome of primary infection, most commonly a latently infected healthy human host, in whom the bacteria are held in check by the host immune response within the confines of tissue granuloma, the host histopathologic hallmark. Such individuals can develop active TB later in life with impairment in the immune system. In contrast, in a minority of infected individuals, the early host immune response fails to control bacterial growth, and progressive granulomatous disease develops, facilitating spread of the bacilli via infectious aerosols. The molecular details of the M. tuberculosis-host innate immune system interaction continue to be elucidated, particularly those occurring within the lung. However, it is clear that a number of complex processes are involved at the different stages of infection that may benefit either the bacterium or the host. In this article, we describe a contemporary view of the molecular events underlying the interaction between M. tuberculosis and a variety of cellular and soluble components and processes of the innate immune system.
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18
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Hasan MS, Ryan PL, Bergmeier LA, Fortune F. Circulating NK cells and their subsets in Behçet's disease. Clin Exp Immunol 2017; 188:311-322. [PMID: 28170096 PMCID: PMC5383445 DOI: 10.1111/cei.12939] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2017] [Indexed: 12/15/2022] Open
Abstract
Behçet's disease (BD) is an autoinflammatory, chronic relapsing/remitting disease of unknown aetiology with both innate and acquired immune cells implicated in disease pathogenesis. Peripheral blood natural killer (NK) cells and their CD56Dim /CD56Bright subsets were surface phenotyped using CD27 and CD16 surface markers in 60 BD patients compared to 60 healthy controls (HCs). Functional potential was assessed by production of interferon (IFN)-γ, granzyme B, perforin and the expression of degranulation marker CD107a. The effects of disease activity (BDActive versus BDQuiet ) and BD medication on NK cells were also investigated. Peripheral blood NK cells (P < 0·0001) and their constituent CD56Dim (P < 0·0001) and CD56Bright (P = 0·0015) subsets were depleted significantly in BD patients compared to HCs, and especially in those with active disease (BDActive ) (P < 0·0001). BD patients taking azathioprine also had significantly depleted NK cells compared to HCs (P < 0·0001). A stepwise multivariate linear regression model confirmed BD activity and azathioprine therapy as significant independent predictor variables of peripheral blood NK percentage (P < 0·001). In general, CD56Dim cells produced more perforin (P < 0·0001) and granzyme B (P < 0·01) expressed higher CD16 levels (P < 0·0001) compared to CD56Bright cells, confirming their increased cytotoxic potential with overall higher NK cell CD107a expression in BD compared to HCs (P < 0·01). Interestingly, IFN-γ production and CD27 expression were not significantly different between CD56Dim /CD56Bright subsets. In conclusion, both BD activity and azathioprine therapy have significant independent depletive effects on the peripheral blood NK cell compartment.
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Affiliation(s)
- M S Hasan
- Centre for Clinical and Diagnostic Oral Sciences, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - P L Ryan
- Centre for Adult Oral Health, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - L A Bergmeier
- Centre for Clinical and Diagnostic Oral Sciences, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - F Fortune
- Centre for Clinical and Diagnostic Oral Sciences, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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19
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García-Cuesta EM, Esteso G, Ashiru O, López-Cobo S, Álvarez-Maestro M, Linares A, Ho MM, Martínez-Piñeiro L, T Reyburn H, Valés-Gómez M. Characterization of a human anti-tumoral NK cell population expanded after BCG treatment of leukocytes. Oncoimmunology 2017; 6:e1293212. [PMID: 28507799 DOI: 10.1080/2162402x.2017.1293212] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/24/2017] [Accepted: 02/05/2017] [Indexed: 01/08/2023] Open
Abstract
Immunotherapy, via intra-vesical instillations of BCG, is the therapy of choice for patients with high-risk non-muscle invasive bladder cancer. The subsequent recruitment of lymphocytes and myeloid cells, as well as the release of cytokines and chemokines, is believed to induce a local immune response that eliminates these tumors, but the detailed mechanisms of action of this therapy are not well understood. Here, we have studied the phenotype and function of the responding lymphocyte populations as well as the spectrum of cytokines and chemokines produced in an in vitro model of human peripheral blood mononuclear cells (PBMCs) co-cultured with BCG. Natural killer (NK) cell activation was a prominent feature of this immune response and we have studied the expansion of this lymphocyte population in detail. We show that, after BCG stimulation, CD56dim NK cells proliferate, upregulate CD56, but maintain the expression of CD16 and the ability to mediate ADCC. CD56bright NK cells also contribute to this expansion by increasing CD16 and KIR expression. These unconventional CD56bright cells efficiently degranulated against bladder cancer cells and the expansion of this population required the release of soluble factors by other immune cells in the context of BCG. Consistent with these in vitro data, a small, but significant increase in the intensity of CD16 expression was noted in peripheral blood CD56bright cells from bladder cancer patients undergoing BCG therapy, that was not observed in patients treated with mitomycin-C instillations. These observations suggest that activation of NK cells may be an important component of the anti-tumoral immune response triggered by BCG therapy in bladder cancer.
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Affiliation(s)
- Eva M García-Cuesta
- Department of Immunology and Oncology, National Centre for Biotechnology, CNB-CSIC, Madrid, Spain
| | - Gloria Esteso
- Department of Immunology and Oncology, National Centre for Biotechnology, CNB-CSIC, Madrid, Spain
| | - Omodele Ashiru
- Division of Bacteriology, Medicines and Healthcare products Regulatory Agency-National Institute for Biological Standards and Control (MHRA-NIBSC), PottersBar, Hertfordshire, UK
| | - Sheila López-Cobo
- Department of Immunology and Oncology, National Centre for Biotechnology, CNB-CSIC, Madrid, Spain
| | | | - Ana Linares
- Urology Unit, Infanta Sofia Hospital, Madrid, Spain
| | - Mei M Ho
- Division of Bacteriology, Medicines and Healthcare products Regulatory Agency-National Institute for Biological Standards and Control (MHRA-NIBSC), PottersBar, Hertfordshire, UK
| | | | - Hugh T Reyburn
- Department of Immunology and Oncology, National Centre for Biotechnology, CNB-CSIC, Madrid, Spain
| | - Mar Valés-Gómez
- Department of Immunology and Oncology, National Centre for Biotechnology, CNB-CSIC, Madrid, Spain
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20
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Vulpis E, Cecere F, Molfetta R, Soriani A, Fionda C, Peruzzi G, Caracciolo G, Palchetti S, Masuelli L, Simonelli L, D'Oro U, Abruzzese MP, Petrucci MT, Ricciardi MR, Paolini R, Cippitelli M, Santoni A, Zingoni A. Genotoxic stress modulates the release of exosomes from multiple myeloma cells capable of activating NK cell cytokine production: Role of HSP70/TLR2/NF-kB axis. Oncoimmunology 2017; 6:e1279372. [PMID: 28405503 PMCID: PMC5384384 DOI: 10.1080/2162402x.2017.1279372] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 12/17/2016] [Accepted: 01/02/2017] [Indexed: 02/08/2023] Open
Abstract
Exosomes are a class of nanovesicles formed and released through the late endosomal compartment and represent an important mode of intercellular communication. The ability of anticancer chemotherapy to enhance the immunogenic potential of malignant cells mainly relies on the establishment of the immunogenic cell death (ICD) and the release of damage-associated molecular patterns (DAMPs). Here, we investigated whether genotoxic stress could promote the release of exosomes from multiple myeloma (MM) cells and studied the immunomodulatory properties they exert on NK cells, a major component of the antitumor immune response playing a key role in the immunosurveillance of MM. Our findings show that melphalan, a genotoxic agent used in MM therapy, significantly induces an increased exosome release from MM cells. MM cell-derived exosomes are capable of stimulating IFNγ production, but not the cytotoxic activity of NK cells through a mechanism based on the activation of NF-κB pathway in a TLR2/HSP70-dependent manner. Interestingly, HSP70+ exosomes are primarily found in the bone marrow (BM) of MM patients suggesting that they might have a crucial immunomodulatory action in the tumor microenvironment. We also provide evidence that the CD56high NK cell subset is more responsive to exosome-induced IFNγ production mediated by TLR2 engagement. All together, these findings suggest a novel mechanism of synergism between chemotherapy and antitumor innate immune responses based on the drug-promotion of nanovesicles exposing DAMPs for innate receptors.
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Affiliation(s)
- Elisabetta Vulpis
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Francesca Cecere
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Rosa Molfetta
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Cinzia Fionda
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Giovanna Peruzzi
- Istituto Italiano di Tecnologia, CLNS@Sapienza, Sapienza University of Rome, Rome, Italy
| | - Giulio Caracciolo
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Sara Palchetti
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Laura Masuelli
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Lucilla Simonelli
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Ugo D'Oro
- GlaxoSmithKline Vaccine, Siena Italy
| | - Maria Pia Abruzzese
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Maria Teresa Petrucci
- Department of Cellular Biotechnologies and Hematology, Sapienza University of Rome, Rome, Italy
| | - Maria Rosaria Ricciardi
- Division of Hematology, Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Rossella Paolini
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Marco Cippitelli
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
- Istituto Mediterraneo di Neuroscienze Neuromed, Pozzilli, Italy
| | - Alessandra Zingoni
- Department of Molecular Medicine - Pasteur Italia Laboratory, Sapienza University of Rome, Rome, Italy
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21
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Michel T, Poli A, Cuapio A, Briquemont B, Iserentant G, Ollert M, Zimmer J. Human CD56bright NK Cells: An Update. THE JOURNAL OF IMMUNOLOGY 2016; 196:2923-31. [PMID: 26994304 DOI: 10.4049/jimmunol.1502570] [Citation(s) in RCA: 264] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Human NK cells can be subdivided into various subsets based on the relative expression of CD16 and CD56. In particular, CD56(bright)CD16(-/dim) NK cells are the focus of interest. They are considered efficient cytokine producers endowed with immunoregulatory properties, but they can also become cytotoxic upon appropriate activation. These cells were shown to play a role in different disease states, such as cancer, autoimmunity, neuroinflammation, and infection. Although their phenotype and functional properties are well known and have been extensively studied, their lineage relationship with other NK cell subsets is not fully defined, nor is their precise hematopoietic origin. In this article, we summarize recent studies about CD56(bright) NK cells in health and disease and briefly discuss the current controversies surrounding them.
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Affiliation(s)
- Tatiana Michel
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Aurélie Poli
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Angelica Cuapio
- Department of Vascular Biology and Thrombosis Research, Medical University of Vienna, A-1090 Vienna, Austria; and
| | - Benjamin Briquemont
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Gilles Iserentant
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Markus Ollert
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg; Allergy Center, Department of Dermatology Odense Research Centre for Anaphylaxis, University of Southern Denmark, DK-5000 Odense, Denmark
| | - Jacques Zimmer
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg;
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22
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Leischner C, Burkard M, Pfeiffer MM, Lauer UM, Busch C, Venturelli S. Nutritional immunology: function of natural killer cells and their modulation by resveratrol for cancer prevention and treatment. Nutr J 2016; 15:47. [PMID: 27142426 PMCID: PMC4855330 DOI: 10.1186/s12937-016-0167-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 04/25/2016] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells as part of the innate immune system represent the first line of defence against (virus-) infected and malignantly transformed cells. The emerging field of nutritional immunology focuses on compounds featuring immune-modulating activities in particular on NK cells, which e.g. can be exploited for cancer prevention and treatment. The plant-based nutrition resveratrol is a ternary hydroxylated stilbene, which is present in many foods and beverages, respectively. In humans it comprises a large variety of distinct biological activities. Interestingly, resveratrol strongly modulates the immune response including the activity of NK cells. This review will give an overview on NK cell functions and summarize the resveratrol-mediated modulation thereof.
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Affiliation(s)
- Christian Leischner
- Department of Internal Medicine I, Medical University Hospital, Otfried-Mueller-Str. 27, Tuebingen, Germany
| | - Markus Burkard
- Department of Internal Medicine I, Medical University Hospital, Otfried-Mueller-Str. 27, Tuebingen, Germany.,Division of Dermatologic Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen, Germany
| | - Matthias M Pfeiffer
- Department of Pediatric Hematology and Oncology, University Children's Hospital, Tuebingen, Germany
| | - Ulrich M Lauer
- Department of Internal Medicine I, Medical University Hospital, Otfried-Mueller-Str. 27, Tuebingen, Germany
| | - Christian Busch
- Division of Dermatologic Oncology, Department of Dermatology and Allergology, University of Tuebingen, Tuebingen, Germany.,Pallas Clinic, Olten, Switzerland
| | - Sascha Venturelli
- Department of Internal Medicine I, Medical University Hospital, Otfried-Mueller-Str. 27, Tuebingen, Germany.
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Chalan P, Bijzet J, Kroesen BJ, Boots AMH, Brouwer E. Altered Natural Killer Cell Subsets in Seropositive Arthralgia and Early Rheumatoid Arthritis Are Associated with Autoantibody Status. J Rheumatol 2016; 43:1008-16. [PMID: 27036380 DOI: 10.3899/jrheum.150644] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The role of natural killer (NK) cells in the immunopathogenesis of rheumatoid arthritis (RA) is unclear. Therefore, numerical and functional alterations of CD56(dim) and CD56(bright) NK cells in the early stages of RA development were studied. METHODS Whole blood samples from newly diagnosed, treatment-naive, seropositive (SP) and seronegative (SN) patients with RA (SP RA, n = 45 and SN RA, n = 12), patients with SP arthralgia (n = 30), and healthy controls (HC, n = 41) were assessed for numbers and frequencies of T cells, B cells, and NK cells. SP status was defined as positive for anticyclic citrullinated peptide antibodies (anti-CCP) and/or rheumatoid factor (RF). Peripheral blood mononuclear cells were used for further analysis of NK cell phenotype and function. RESULTS Total NK cell numbers were decreased in SP RA and SP arthralgia but not in SN RA. Also, NK cells from SP RA showed a decreased potency for interferon-γ (IFN-γ) production. A selective decrease of CD56(dim), but not CD56(bright), NK cells in SP RA and SP arthralgia was observed. This prompted investigation of CD16 (FcγRIIIa) triggering in NK cell apoptosis and cytokine expression. In vitro, CD16 triggering induced apoptosis of CD56(dim) but not CD56(bright) NK cells from HC. This apoptosis was augmented by adding interleukin 2 (IL-2). Also, CD16 triggering in the presence of IL-2 stimulated IFN-γ and tumor necrosis factor-α expression by CD56(dim) NK cells. CONCLUSION The decline of CD56(dim) NK cells in SP arthralgia and SP RA and the in vitro apoptosis of CD56(dim) NK cells upon CD16 triggering suggest a functional role of immunoglobulin G-containing autoantibody (anti-CCP and/or RF)-immune complexes in this process. Moreover, CD16-triggered cytokine production by CD56(dim) NK cells may contribute to systemic inflammation as seen in SP arthralgia and SP RA.
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Affiliation(s)
- Paulina Chalan
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Johan Bijzet
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Bart-Jan Kroesen
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Annemieke M H Boots
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen.
| | - Elisabeth Brouwer
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
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Lima M, Leander M, Santos M, Santos AH, Lau C, Queirós ML, Gonçalves M, Fonseca S, Moura J, Teixeira MDA, Orfao A. Chemokine Receptor Expression on Normal Blood CD56(+) NK-Cells Elucidates Cell Partners That Comigrate during the Innate and Adaptive Immune Responses and Identifies a Transitional NK-Cell Population. J Immunol Res 2015; 2015:839684. [PMID: 26543875 PMCID: PMC4620293 DOI: 10.1155/2015/839684] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/02/2015] [Accepted: 03/02/2015] [Indexed: 12/26/2022] Open
Abstract
Studies of chemokine receptors (CKR) in natural killer- (NK-) cells have already been published, but only a few gave detailed information on its differential expression on blood NK-cell subsets. We report on the expression of the inflammatory and homeostatic CKR on normal blood CD56(+low) CD16(+) and CD56(+high) CD16(-/+low) NK-cells. Conventional CD56(+low) and CD56(+high) NK-cells present in the normal PB do express CKR for inflammatory cytokines, although with different patterns CD56(+low) NK-cells are mainly CXCR1/CXCR2(+) and CXCR3/CCR5(-/+), whereas mostly CD56(+high) NK-cells are CXCR1/CXCR2(-) and CXCR3/CCR5(+). Both NK-cell subsets have variable CXCR4 expression and are CCR4(-) and CCR6(-). The CKR repertoire of the CD56(+low) NK-cells approaches to that of neutrophils, whereas the CKR repertoire of the CD56(+high) NK-cells mimics that of Th1(+) T cells, suggesting that these cells are prepared to migrate into inflamed tissues at different phases of the immune response. In addition, we describe a subpopulation of NK-cells with intermediate levels of CD56 expression, which we named CD56(+int) NK-cells. These NK-cells are CXCR3/CCR5(+), they have intermediate levels of expression of CD16, CD62L, CD94, and CD122, and they are CD57(-) and CD158a(-). In view of their phenotypic features, we hypothesize that they correspond to a transitional stage, between the well-known CD56(+high) and CD56(+low) NK-cells populations.
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Affiliation(s)
- Margarida Lima
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Magdalena Leander
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Marlene Santos
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Ana Helena Santos
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Catarina Lau
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Maria Luís Queirós
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Marta Gonçalves
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Sónia Fonseca
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - João Moura
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Maria dos Anjos Teixeira
- Laboratory of Cytometry, Service of Hematology, Hospital de Santo António (HSA), Centro Hospitalar do Porto (CHP), Rua D. Manuel II, 4050-345 Porto, Portugal
| | - Alberto Orfao
- Laboratory of Flow Cytometry, Centro de Investigación del Cancer (CIC), Campus Miguel de Unamuno, 37007 Salamanca, Spain
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Lysakova-Devine T, O'Farrelly C. Tissue-specific NK cell populations and their origin. J Leukoc Biol 2014; 96:981-90. [DOI: 10.1189/jlb.1ru0514-241r] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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26
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Esin S, Batoni G. Natural killer cells: a coherent model for their functional role in Mycobacterium tuberculosis infection. J Innate Immun 2014; 7:11-24. [PMID: 25196698 DOI: 10.1159/000363321] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/30/2014] [Indexed: 12/20/2022] Open
Abstract
Tuberculosis is still a leading cause of bacterial infection worldwide, with an estimate of over two billion people latently infected with Mycobacterium tuberculosis (MTB). A delicate interplay between MTB and the host's innate and acquired immune system can influence the outcome of the infection, which ranges from pathogen elimination to the establishment of a latent infection or a progressive disease. Although the host cell-mediated adaptive immune response is of vital importance in the control of MTB infection, growing evidence indicates that innate immune cells may greatly influence the outcome of the interaction between the bacterium and the host. Among the cell populations likely to play a role in the host immune response to MTB, natural killer (NK) cells have recently attracted considerable interest. This review is dedicated to dissecting the role of NK cells in immunity to tuberculosis, reporting the most relevant findings and providing a working model of the possible contribution of NK cells in early and late events associated with MTB infection.
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Affiliation(s)
- Semih Esin
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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27
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Mao Y, Poschke I, Kiessling R. Tumour-induced immune suppression: role of inflammatory mediators released by myelomonocytic cells. J Intern Med 2014; 276:154-70. [PMID: 24597954 DOI: 10.1111/joim.12229] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tumour-induced immune dysfunction is a serious challenge to immunotherapy for cancer, and intact adaptive and innate cellular immunity is key to its success. Myelomonocytic cells have a central role in this immune suppression, and tumour-associated macrophages, eosinophils, neutrophils and myeloid-derived suppressor cells have all been shown to be of major importance. These myelomonocytic cells secrete a broad repertoire of inflammatory mediators providing them with powerful tools to inhibit tumour-reactive T cells and natural killer cells; free oxygen radicals including reactive oxygen species and NO, arginase, indoleamine 2,3-dioxygenase, prostaglandins, the pro-inflammatory heterodimer S100A8/9 and cytokines, such as granulocyte-macrophage colony-stimulating factor and transforming growth factor-β, have proven particularly potent in suppressing antitumour cellular immunity. Determining which of these factors prevail in individual cancer patients and designing methods aimed at neutralization or inhibition of their effects on target tissues have the potential to greatly enhance the clinical efficacy of immunotherapy.
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Affiliation(s)
- Y Mao
- Department of Oncology-Pathology, Cancer Center Karolinska, Karolinska Institutet, Stockholm, Sweden
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28
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Della Chiesa M, Marcenaro E, Sivori S, Carlomagno S, Pesce S, Moretta A. Human NK cell response to pathogens. Semin Immunol 2014; 26:152-60. [PMID: 24582551 DOI: 10.1016/j.smim.2014.02.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/04/2014] [Indexed: 12/23/2022]
Abstract
NK cells represent important effectors of the innate immunity in the protection of an individual from microbes. During an NK-mediated anti-microbial response, the final fate (survival or death) of a potential infected target cell depends primarily on the type and the number of receptor/ligand interactions occurring at the effector/target immune synapse. The identification of an array of receptors involved in NK cell triggering has been crucial for a better understanding of the NK cell biology. In this context, NCR play a predominant role in NK cell activation during the process of natural cytotoxicity. Regarding the NK-mediated pathogen recognition and NK cell activation, an emerging concept is represented by the involvement of TLRs and activating KIRs. NK cells express certain TLRs in common with other innate cell types. This would mean that specific TLR ligands are able to promote the simultaneous and synergistic stimulation of these innate cells, providing a coordinated mechanism for regulating the initiation and amplification of immune responses. Evidences have been accumulated indicating that viral infections may have a significant impact on NK cell maturation, promoting the expansion of phenotypically and functionally aberrant NK cell subpopulations. For example, during chronic HIV-infection, an abnormal expansion of a dysfunctional CD56neg NK cell subset has been detected that may explain, at least in part, the defective NK cell-mediated antiviral activity. An analogous imbalance of NK cell subsets has been detected in patients receiving HSCT to cure high risk leukemias and experiencing HCMV infection/reactivation. Remarkably, NK cells developing after CMV reactivation may contain "memory-like" or "long-lived" NK cells that could exert a potent anti-leukemia effect.
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Affiliation(s)
- Mariella Della Chiesa
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Emanuela Marcenaro
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Simona Sivori
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Simona Carlomagno
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Silvia Pesce
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
| | - Alessandro Moretta
- DI.ME.S. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy.
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Rudnicka K, Miszczyk E, Matusiak A, Walencka M, Moran AP, Rudnicka W, Chmiela M. Helicobacter pylori-driven modulation of NK cell expansion, intracellular cytokine expression and cytotoxic activity. Innate Immun 2014; 21:127-39. [PMID: 24448078 DOI: 10.1177/1753425913518225] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
During Helicobacter pylori (Hp) infections, innate immune cells may be positively or negatively modulated by Hp compounds or by Hp-induced cytokines. We have shown previously that the natural cytotoxic activity of PBMC was lower in Hp-infected [Hp(+)] than Hp-uninfected individuals [Hp(-)]. Here, we asked whether the Hp-modulated cytotoxic amplitude is associated with changes in the number of NK cells, their activation or intracellular cytokine expression. Flow cytometry immunophenotyping of PBMC was performed with regard to the surface receptors CD3, CD56 and CD25, and intracellular cytokine expression of IL-2, IFN-γ and IL-10 after in vitro stimulation with Hp glycine acid extract (GE), Hp LPS or standard Escherichia coli LPS. Hp GE-driven enhancement of lymphocyte cytotoxic activity was associated with the expansion of CD3(-)CD56(+)CD25(+) NK cells and the up-regulation of IFN-γ and/or IL-2 synthesis, up to the higher level in Hp(-) than in Hp(+), while Hp LPS-mediated decrease in lymphocyte cytotoxicity was accompanied by the lack of CD3(-)CD56(+)CD25(+) NK propagation, the inhibition of pro-inflammatory cytokine expression and intense expansion of IL-10-producing NK cells. Thus, the cytotoxic and cytokine activities of NK cells were dependent on the type of antigenic challenge and the Hp status, that is, NK cells could be modulated positively by Hp GE Ags and negatively by Hp LPS.
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Affiliation(s)
- Karolina Rudnicka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Eliza Miszczyk
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Agnieszka Matusiak
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Maria Walencka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Anthony P Moran
- Department of Microbiology, National University of Ireland, University Road, Galway, Ireland
| | - Wiesława Rudnicka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Magdalena Chmiela
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
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TLR-mediated activation of NK cells and their role in bacterial/viral immune responses in mammals. Immunol Cell Biol 2013; 92:256-62. [PMID: 24366517 DOI: 10.1038/icb.2013.99] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 11/20/2013] [Accepted: 11/23/2013] [Indexed: 12/13/2022]
Abstract
Natural killer (NK) cells are important in innate immunity, first described as guardians for the detection and clearance of transformed or virus-infected cells. Later, this cell type was revealed to be also able to recognize and respond to bacteria-infected cells. NK cells possess receptors allowing them to sense and respond to viral and bacterial patterns, including Toll-like receptors (TLRs). Initially described in other innate immune cells, particularly monocytes/macrophages, TLRs have more recently been characterized in NK cells. Controversies remain regarding the TLR expression in NK cells and their responsiveness to agonists, specifically the requirement for the presence of accessory cells, such as dendritic cells, or of accessory cytokines (IL-2, IL-12, IL-15 and IL-18) to respond to TLR agonists. Upon TLR activation, NK cells are an important source of IFN-γ and granulocyte macrophage colony-stimulating factor, cytokines necessary to fight infection but that can also contribute to deleterious inflammation if produced in excessive amounts. Here, we review the current knowledge concerning the expression of TLRs in and on NK cells and the responsiveness to their agonists and review the literature on the role of NK cells in the sensing of bacterial or viral patterns and in combatting infection.
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The contribution of non-conventional T cells and NK cells in the mycobacterial-specific IFNγ response in Bacille Calmette-Guérin (BCG)-immunized infants. PLoS One 2013; 8:e77334. [PMID: 24098583 PMCID: PMC3789697 DOI: 10.1371/journal.pone.0077334] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/30/2013] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The Mycobacterium bovis Bacille Calmette-Guérin (BCG) vaccine is given to >120 million infants each year worldwide. Most studies investigating the immune response to BCG have focused on adaptive immunity. However the importance of TCR-gamma/delta (γδ) T cells and NK cells in the mycobacterial-specific immune response is of increasing interest. METHODS Participants in four age-groups were BCG-immunized. Ten weeks later, in vitro BCG-stimulated blood was analyzed for NK and T cell markers, and intracellular IFNgamma (IFNγ) by flow cytometry. Total functional IFNγ response was calculated using integrated median fluorescence intensity (iMFI). RESULTS In infants and children, CD4 and CD4-CD8- (double-negative (DN)) T cells were the main IFNγ-expressing cells representing 43-56% and 27-37% of total CD3+ IFNγ+ T cells respectively. The iMFI was higher in DN T cells compared to CD4 T cells in all age groups, with the greatest differences seen in infants immunized at birth (p=0.002) or 2 months of age (p<0.0001). When NK cells were included in the analysis, they accounted for the majority of total IFNγ-expressing cells and, together with DN Vδ2 γδ T cells, had the highest iMFI in infants immunized at birth or 2 months of age. CONCLUSION In addition to CD4 T cells, NK cells and DN T cells, including Vδ2 γδ T cells, are the key populations producing IFNγ in response to BCG immunization in infants and children. This suggests that innate immunity and unconventional T cells play a greater role in the mycobacterial immune response than previously recognized and should be considered in the design and assessment of novel tuberculosis vaccines.
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Portevin D, Young D. Natural killer cell cytokine response to M. bovis BCG Is associated with inhibited proliferation, increased apoptosis and ultimate depletion of NKp44(+)CD56(bright) cells. PLoS One 2013; 8:e68864. [PMID: 23874793 PMCID: PMC3715299 DOI: 10.1371/journal.pone.0068864] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 06/04/2013] [Indexed: 11/19/2022] Open
Abstract
Mycobacterium bovis BCG, a live attenuated strain of M. bovis initially developed as a vaccine against tuberculosis, is also used as an adjuvant for immunotherapy of cancers and for treatment of parasitic infections. The underlying mechanisms are thought to rely on its immunomodulatory properties including the recruitment of natural killer (NK) cells. In that context, we aimed to study the impact of M. bovis BCG on NK cell functions. We looked at cytotoxicity, cytokine production, proliferation and cell survival of purified human NK cells following exposure to single live particles of mycobacteria. We found that M. bovis BCG mediates apoptosis of NK cells only in the context of IL-2 stimulation during which CD56(bright) NK cells are releasing IFN-γ in response to mycobacteria. We found that the presence of mycobacteria prevented the IL-2 induced proliferation and surface expression of NKp44 receptor by the CD56(bright) population. In summary, we observed that M. bovis BCG is modulating the functions of CD56(bright) NK cells to drive this subset to produce IFN-γ before subsequent programmed cell death. Therefore, IFN-γ production by CD56(bright) cells constitutes the main effector mechanism of NK cells that would contribute to the benefits observed for M. bovis BCG as an immunotherapeutic agent.
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Affiliation(s)
- Damien Portevin
- Division of Mycobacterial Research, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom.
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Rudnicka K, Matusiak A, Miszczyk E, Rudnicka W, Tenderenda M, Chmiela M. Immunophenotype of peripheral blood natural killer cells and IL-10 serum levels in relation to Helicobacter pylori status. APMIS 2013; 121:806-13. [PMID: 23758061 DOI: 10.1111/apm.12120] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Accepted: 04/08/2013] [Indexed: 12/25/2022]
Abstract
Recent findings suggest that NK (Natural Killer) cells may directly modulate the antimicrobial immune responses. In this study, we performed immunophenotypic analysis of peripheral blood NK cells with regard to CD56, CD16, Nkp46, and CD25 markers, as well as IL-10 levels quantification in the sera samples of asymptomatic, H. pylori (Hp)-infected or uninfected individuals, and combined these results with our previous findings on lymphocyte cytotoxic activity. Twenty healthy volunteers [10 Hp(-);10 Hp(+)] were included in the study. The percentages of classic lymphocytes (CD3(+) ) and NK cells (CD3(-) CD56(+) , CD3(-) Nkp46(+) , CD3(-) CD16(+) ) with or without CD25 receptor were evaluated by fluorochrome-conjugated monoclonal antibody staining and flow cytometry analysis. IL-10 quantification was performed by enzyme-linked immunosorbent assay-ELISA. Our study showed elevated levels of IL-10 and higher NK cell numbers of both CD3(-) CD56(+) CD25(+) and CD3(-) Nkp46(+) CD25(+) phenotypes, as well as CD3(+) CD25(+) classic lymphocytes in Hp(+) compared with Hp(-) individuals. No differences between Hp(-) and Hp(+) individuals were found either in total number of classic lymphocytes or NK cell subtypes. Our data suggest that in Hp(+) donors, there is a domination of lymphocytes and NK cells co-expressing CD25 marker, which might be influenced by the regulatory IL-10. This phenomenon may be a result of H. pylori adaptation to a changing environment in vivo leading to a chronic infection and lack of severe gastric pathologies.
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Affiliation(s)
- Karolina Rudnicka
- Laboratory of Gastroimmunology, Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
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Koch I, Dach K, Heesemann J, Hoffmann R. Yersinia enterocolitica inactivates NK cells. Int J Med Microbiol 2013; 303:433-42. [PMID: 23810728 DOI: 10.1016/j.ijmm.2013.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/07/2013] [Accepted: 05/20/2013] [Indexed: 12/16/2022] Open
Abstract
Natural Killer (NK) cells serve as an important source of proinflammatory cytokines early during infection. Hypothesizing that Yersinia enterocolitica might interact with and inactivate NK cells, we examined NK cell-Y. enterocolitica interactions in vitro and in vivo. Y. enterocolitica adheres to NK cells in an Invasin dependent manner and inhibits NK cell cytotoxicity and IFN-γ production induced by IL-12+IL-18 or IL-12 alone. YopP, an acetyltransferase known to inhibit MAPK and NFκB signaling, suppresses IL-12 and IL-12+IL-18 mediated IFN-γ production in NK cells by inhibiting phosphorylation of Tyk2 and STAT4 in addition to MAPK. YopP inhibits induction of all genes whose expression is induced by IL-12+IL-18 in NK cells. Y. enterocolitica-mediated adherence to and inactivation of NK cells also occurs after infection in vivo. Thus, we present the first report of a bacterial pathogen inactivating NK cells, and report interaction with Tyk2-STAT4 signaling as a novel function of YopP.
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Affiliation(s)
- Isabel Koch
- Ludwig Maximilians University, Max von Pettenkofer Institut, Department of Bacteriology, 80336 Munich, Germany
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Esin S, Counoupas C, Aulicino A, Brancatisano FL, Maisetta G, Bottai D, Di Luca M, Florio W, Campa M, Batoni G. Interaction ofMycobacterium tuberculosisCell Wall Components with the Human Natural Killer Cell Receptors NKp44 and Toll-Like Receptor 2. Scand J Immunol 2013; 77:460-9. [DOI: 10.1111/sji.12052] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 03/29/2013] [Indexed: 12/30/2022]
Affiliation(s)
- S. Esin
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - C. Counoupas
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - A. Aulicino
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - F. L. Brancatisano
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - G. Maisetta
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - D. Bottai
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - M. Di Luca
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - W. Florio
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - M. Campa
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
| | - G. Batoni
- Department of Translational Research and New Technologies in Medicine and Surgery; University of Pisa; Pisa; Italy
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Portevin D, Via LE, Eum S, Young D. Natural killer cells are recruited during pulmonary tuberculosis and their ex vivo responses to mycobacteria vary between healthy human donors in association with KIR haplotype. Cell Microbiol 2012; 14:1734-44. [PMID: 22788220 PMCID: PMC3503254 DOI: 10.1111/j.1462-5822.2012.01834.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 06/13/2012] [Accepted: 06/28/2012] [Indexed: 12/01/2022]
Abstract
Humans vary widely in their susceptibility to tuberculosis. While only a minority will progress to disease, the majority of healthy individuals exposed to Mycobacterium tuberculosis mount an immune response that can clear or contain the infection in a quiescent form. Using immunofluorescence on human clinical samples, we identified natural killer (NK) cells infiltrating granulomatous pulmonary lesions during active disease. In order to compare the NK cell ability to react to free mycobacteria in the context of tuberculosis infection and Mycobacterium bovis BCG vaccination, NK cells were isolated from the peripheral blood of anonymous healthy human donors, and stimulated with M. tuberculosis H37Rv or M. bovis BCG. Extracellular M. tuberculosis and M. bovis BCG could equally trigger the release of IFNγ and TNFα from NK cells in the presence of IL-2. However, we found that this response varied 1000-fold between individuals (n = 52), with differences in KIR haplotype providing a significant criterion to distinguish between low and high responders. Our findings suggest that variations at the KIR locus and therefore of the NK cell repertoire may affect cytokine production in response to mycobacteria and we propose that this innate variability couldsustain different levels of susceptibility to M. tuberculosis infection.
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Affiliation(s)
- Damien Portevin
- Division of Mycobacterial Research, MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London, UK.
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Souza-Fonseca-Guimaraes F, Adib-Conquy M, Cavaillon JM. Natural killer (NK) cells in antibacterial innate immunity: angels or devils? Mol Med 2012; 18:270-85. [PMID: 22105606 DOI: 10.2119/molmed.2011.00201] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 11/09/2011] [Indexed: 12/23/2022] Open
Abstract
Natural killer (NK) cells were first described as immune leukocytes that could kill tumor cells and soon after were reported to kill virus-infected cells. In the mid-1980s, 10 years after their discovery, NK cells were also demonstrated to contribute to the fight against bacterial infection, particularly because of crosstalk with other leukocytes. A wide variety of immune cells are now recognized to interact with NK cells through the production of cytokines such as interleukin (IL)-2, IL-12, IL-15 and IL-18, which boost NK cell activities. The recent demonstration that NK cells express pattern recognition receptors, namely Toll-like and nucleotide oligomerization domain (NOD)-like receptors, led to the understanding that these cells are not only under the control of accessory cells, but can be directly involved in the antibacterial response thanks to their capacity to recognize pathogen-associated molecular patterns. Interferon (IFN)-γ is the predominant cytokine produced by activated NK cells. IFN-γ is a key contributor to antibacterial immune defense. However, in synergy with other inflammatory cytokines, IFN-γ can also lead to deleterious effects similar to those observed during sepsis. Accordingly, as the main source of IFN-γ in the early phase of infection, NK cells display both beneficial and deleterious effects, depending on the circumstances.
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Izawa S, Kono K, Mimura K, Kawaguchi Y, Watanabe M, Maruyama T, Fujii H. H₂O₂ production within tumor microenvironment inversely correlated with infiltration of CD56(dim) NK cells in gastric and esophageal cancer: possible mechanisms of NK cell dysfunction. Cancer Immunol Immunother 2011; 60:1801-10. [PMID: 21811786 PMCID: PMC11028881 DOI: 10.1007/s00262-011-1082-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 07/19/2011] [Indexed: 12/21/2022]
Abstract
Human NK cells can be divided into two subsets, CD56(dim)CD16(+)NK and CD56(bright)CD16(-)NK cells, based on their expression of CD56 and CD16. In the present study, we analyzed the relationship between CD56(dim)/CD56(bright) NK cells and H₂O₂ in tumor-infiltrating NK cells in patients with gastric (n = 50) and esophageal (n = 35) cancer. The ratio of CD56(dim) NK cells infiltrating tumors gradually decreased according to disease progression. H₂O₂ was abundantly produced within tumor microenvironments, and there was an inverse correlation between CD56(dim) NK cell infiltration and H₂O₂ production. CD56(dim) NK cells are more sensitive to apoptosis induced by physiological levels of H₂O₂ than CD56(bright) NK cells. Furthermore, the exposure of NK cells to H₂O₂ resulted in the impairment of ADCC activity. In conclusion, H₂O₂ produced within tumor microenvironments inversely correlated with the infiltration of CD56(dim) NK cells, possibly due to their preferentially induced cell death. These observations may explain one of the mechanisms behind NK cell dysfunction frequently observed in tumor microenvironments.
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Affiliation(s)
- Shinichirou Izawa
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Koji Kono
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Kousaku Mimura
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Yoshihiko Kawaguchi
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Mitsuaki Watanabe
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Takanori Maruyama
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
| | - Hideki Fujii
- First Department of Surgery, University of Yamanashi, 1110 Shimokato, Chuo-city, Yamanashi 409-3898 Japan
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Evans JH, Horowitz A, Mehrabi M, Wise EL, Pease JE, Riley EM, Davis DM. A distinct subset of human NK cells expressing HLA-DR expand in response to IL-2 and can aid immune responses to BCG. Eur J Immunol 2011; 41:1924-33. [PMID: 21491418 PMCID: PMC3549558 DOI: 10.1002/eji.201041180] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 02/27/2011] [Accepted: 04/11/2011] [Indexed: 12/11/2022]
Abstract
Subsets of NK cells can have distinct functions. Here, we report that >25% of human peripheral blood NK cells express HLA-DR after culture with IL-2. This can be driven by an expansion of a small subset of NK cells expressing HLA-DR, in contrast to previous assumptions that HLA-DR is upregulated on previously negative cells. HLA-DR-expressing NK cells showed enhanced degranulation to susceptible target cells and expressed chemokine receptor CXCR3, which facilitated their enrichment following exposure to CXCL11/I-TAC. Suggesting HLA-DR-expressing NK cells have an important role in an immune response, stimulation of PBMCs with Mycobacterium bovis BCG (BCG) triggered expansion of this subset. Importantly, the magnitude of an individual's NK cell IFN-γ response triggered by BCG was associated with the initial frequency of HLA-DR-expressing NK cells in PBMCs. More directly indicating the importance of HLA-DR-expressing NK cells, enriching the frequency of this subset in PBMCs substantially augmented the IFN-γ response to BCG. Thus, HLA-DR expression marks a distinct subset of NK cells, present at low frequency in circulating blood but readily expanded by IL-2, that can play an important role during immune responses to BCG.
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Affiliation(s)
- J Henry Evans
- Division of Cell and Molecular Biology, Imperial College London, South Kensington Campus, London, UK.
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40
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Watanabe M, Kono K, Kawaguchi Y, Mizukami Y, Mimura K, Maruyama T, Izawa S, Fujii H. NK cell dysfunction with down-regulated CD16 and up-regulated CD56 molecules in patients with esophageal squamous cell carcinoma. Dis Esophagus 2010; 23:675-81. [PMID: 20545975 DOI: 10.1111/j.1442-2050.2010.01073.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
NK cells can be divided into two subsets, CD56(dim) and CD56(bright) NK cells, based on their expression of CD56 and CD16. In the present study, we analyzed NK cell dysfunction in patients with esophageal squamous cell carcinoma (ESCC), with a particular focus on the expression of CD16 and CD56 molecules. Expression of CD16 and CD56, and the distribution of CD56(dim) or CD56(bright) NK cells gated on CD56(+)CD3(-) NK cells were compared between ESCC patients (n= 40) and healthy donors (n= 38). Purified NK cells were evaluated for Cetuximab-mediated antibody-dependent cellular cytotoxicity (ADCC) against epidermal growth factor receptor (EGFR)-expressing ESCC cell lines. Although there were no significant differences in the distribution of CD56(dim) and CD56(bright) NK cells between ESCC patients and healthy donors, down-regulated CD16 and up-regulated CD56 were significantly observed on NK cells of ESCC patients, paralleling the impairment of Cetuximab-mediated ADCC, in comparison with healthy donors. After patients received curative resections of ESCC, the down-regulated CD16 and up-regulated CD56 were significantly restored to the levels of healthy donors. Moreover, TGF-beta1 partially contributed to down-regulation of CD16 on NK cells. Down-regulated CD16 and up-regulated CD56 molecules on NK cells were observed in ESCC patients, resulting in NK cell dysfunction.
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Affiliation(s)
- M Watanabe
- First Department of Surgery, University of Yamanashi, Yamanashi, Japan
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41
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Melki MT, Saïdi H, Dufour A, Olivo-Marin JC, Gougeon ML. Escape of HIV-1-infected dendritic cells from TRAIL-mediated NK cell cytotoxicity during NK-DC cross-talk--a pivotal role of HMGB1. PLoS Pathog 2010; 6:e1000862. [PMID: 20419158 PMCID: PMC2855334 DOI: 10.1371/journal.ppat.1000862] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Accepted: 03/17/2010] [Indexed: 11/18/2022] Open
Abstract
Early stages of Human Immunodeficiency Virus-1 (HIV-1) infection are associated with local recruitment and activation of important effectors of innate immunity, i.e. natural killer (NK) cells and dendritic cells (DCs). Immature DCs (iDCs) capture HIV-1 through specific receptors and can disseminate the infection to lymphoid tissues following their migration, which is associated to a maturation process. This process is dependent on NK cells, whose role is to keep in check the quality and the quantity of DCs undergoing maturation. If DC maturation is inappropriate, NK cells will kill them (“editing process”) at sites of tissue inflammation, thus optimizing the adaptive immunity. In the context of a viral infection, NK-dependent killing of infected-DCs is a crucial event required for early elimination of infected target cells. Here, we report that NK-mediated editing of iDCs is impaired if DCs are infected with HIV-1. We first addressed the question of the mechanisms involved in iDC editing, and we show that cognate NK-iDC interaction triggers apoptosis via the TNF-related apoptosis-inducing ligand (TRAIL)-Death Receptor 4 (DR4) pathway and not via the perforin pathway. Nevertheless, once infected with HIV-1, DCHIV become resistant to NK-induced TRAIL-mediated apoptosis. This resistance occurs despite normal amounts of TRAIL released by NK cells and comparable DR4 expression on DCHIV. The escape of DCHIV from NK killing is due to the upregulation of two anti-apoptotic molecules, the cellular-Flice like inhibitory protein (c-FLIP) and the cellular inhibitor of apoptosis 2 (c-IAP2), induced by NK-DCHIV cognate interaction. High-mobility group box 1 (HMGB1), an alarmin and a key mediator of NK-DC cross-talk, was found to play a pivotal role in NK-dependent upregulation of c-FLIP and c-IAP2 in DCHIV. Finally, we demonstrate that restoration of DCHIV susceptibility to NK-induced TRAIL killing can be obtained either by silencing c-FLIP and c-IAP2 by specific siRNA, or by inhibiting HMGB1 with blocking antibodies or glycyrrhizin, arguing for a key role of HMGB1 in TRAIL resistance and DCHIV survival. These findings provide evidence for a new strategy developed by HIV to escape immune attack, they challenge the question of the involvement of HMGB1 in the establishment of viral reservoirs in DCs, and they identify potential therapeutic targets to eliminate infected DCs. Dendritic cells (DCs), the professional antigen presenting cells, are critical for host immunity by inducing specific immune responses against a broad variety of pathogens. Human Immunodeficiency Virus-1 (HIV-1) has evolved ways to exploit DCs, thereby facilitating viral dissemination and allowing evasion of antiviral immunity. In particular, infected DCs may function as cellular reservoirs for HIV-1, thus contributing to viral persistence in lymphoid tissues. The mechanisms involved in the constitution of HIV reservoirs in DCs are poorly understood. In this study, we reveal that DCs infected with HIV-1 (DCHIV) become resistant to killing by natural killer (NK) cells, early effectors of innate immunity involved in the destruction of virus infected cells or cancer cells. This protection of DCHIV from NK cytotoxicity is induced through a cross-talk between NK cells and DCHIV, which induces the upregulation in DCHIV of two inhibitors of cell death, i.e. cellular-Flice like inhibitory protein (c-FLIP) and cellular inhibitor of apoptosis 2 (c-IAP2). The molecule responsible for the induction of these inhibitors is High-mobility group box 1 (HMGB1), an alarmin involved in the functional maturation of DCs. Blocking HMGB1 restores DCHIV susceptibility to NK cell killing, arguing for a key role of HMGB1 in the persistence of DCHIV. These findings provide evidence of the crucial role of NK-DC cross-talk in promoting viral persistence, and they identify potential therapeutic targets to eliminate infected DCs.
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Affiliation(s)
- Marie-Thérèse Melki
- Institut Pasteur, Antiviral Immunity, Biotherapy and Vaccine Unit, Paris, France
| | - Héla Saïdi
- Institut Pasteur, Antiviral Immunity, Biotherapy and Vaccine Unit, Paris, France
| | - Alexandre Dufour
- Institut Pasteur, Quantitative Image Analysis Unit, CNRS URA 2582, Paris, France
| | | | - Marie-Lise Gougeon
- Institut Pasteur, Antiviral Immunity, Biotherapy and Vaccine Unit, Paris, France
- * E-mail:
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42
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Comparing human T cell and NK cell responses in viral-based malaria vaccine trials. Vaccine 2009; 28:21-7. [PMID: 19837090 DOI: 10.1016/j.vaccine.2009.09.132] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2009] [Revised: 09/19/2009] [Accepted: 09/30/2009] [Indexed: 11/21/2022]
Abstract
Vaccination with viral-based vaccines continues to hold promise for the prevention of malaria. Whilst antigen-specific T cell responses are considered a major aim of such an approach, a role for induced NK cells as anti-malarial effector cells, or in shaping T cell responses, has received less attention. In this study naïve human volunteers were vaccinated in a prime-boost vaccination regimen comprising recombinant viral vectors fowlpox (FP9) and modified vaccinia Ankara (MVA) encoding liver-stage antigens, or a virosome vaccine. Significant T cell responses specific for the vectored vaccine antigens were demonstrated by IFNgamma ELISPOT and intracellular cytokine staining (ICS) for IFNgamma and IL-2, the ICS being associated with increased time to parasitaemia following subsequent challenge. Numbers of CD56(bright) lymphocytes increased significantly following vaccination, as did CD3(+) CD56(+) lymphocytes, whilst CD56(dim) cells did not. No such increases were seen with the virosome vaccine. There was no significant correlation of these CD56(+) populations with the antigen-specific T cell responses nor time to parasitaemia. To investigate pathways of immune activation that could contribute to these lymphocyte responses, viral vectors were shown in vitro to efficiently infect APCs but not lymphocytes, and stimulated inflammatory cytokines such as type I interferons. In conclusion, measuring antigen-specific T cells is more meaningful than NK cells in these vaccination regimens.
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43
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Graham EM, Thom ML, Howard CJ, Boysen P, Storset AK, Sopp P, Hope JC. Natural killer cell number and phenotype in bovine peripheral blood is influenced by age. Vet Immunol Immunopathol 2009; 132:101-8. [PMID: 19525013 DOI: 10.1016/j.vetimm.2009.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Revised: 04/29/2009] [Accepted: 05/11/2009] [Indexed: 10/20/2022]
Abstract
Natural killer (NK) cells are critical to the innate defence against intracellular infection. High NK cell frequencies have been detected in human neonates, which may compensate for the relative immaturity of the specific immune response. Additionally, phenotypic subsets of NK cells have been identified in humans with different functional properties. In this study, we examined the age distribution and phenotype of NK populations in bovine peripheral blood, including neonatal animals. We found that the NK cell populations defined by the phenotypes CD3(-)CD2(+) and NKp46(+) largely overlapped, so that the majority of NK cells in bovine peripheral blood were CD3(-)CD2(+)NKp46(+). The remainder of the NK-like cells comprised two minor populations, CD3(-)CD2(+)NKp46(-) and CD3(-)CD2(-)NKp46(+); the relative proportions of these varied with age. The lowest frequency of NK cells was recorded in 1-day-old calves, with the highest frequency in day 0 calves. The phenotypic characteristics of CD3(-)CD2(+) and NKp46(+) NK populations were similar; both populations expressed CD45RO, CD45RB, CD11b, CC84, CD8alphaalpha and CD8alphabeta and did not express CD21, WC1, CD14 or gammadelta TCR. Age-related phenotypic differences were apparent. The phenotypic characteristics of three NK subpopulations were described; a significantly greater proportion of the CD3(-)CD2(-)NKp46(+) population expressed CD8alpha compared to CD3(-)CD2(+)NKp46(+) cells. Furthermore, a significantly greater proportion of the CD3(-)CD2(+)NKp46(-) population expressed CD8 compared to total CD3(-)CD2(+) cells. Adult cattle had a significantly higher proportion of perforin(+) cells compared to calves aged </=6 weeks. In this age group, the majority of perforin(+) cells expressed NKp46, while in adults the majority of perforin(+) cells were NKp46(-). However, the proportion of NKp46(+) and CD3(-)CD2(+) cells that expressed perforin was not significantly different in any age group tested.
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Affiliation(s)
- Elizabeth M Graham
- Institute for Animal Health, Compton, Newbury, Berkshire, RG20 7NN, United Kingdom
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44
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Pokkali S, Das SD, Selvaraj A. Differential upregulation of chemokine receptors on CD56 NK cells and their transmigration to the site of infection in tuberculous pleurisy. ACTA ACUST UNITED AC 2009; 55:352-60. [PMID: 19159432 DOI: 10.1111/j.1574-695x.2008.00520.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemokines and their receptors orchestrate leukocyte recruitment and confer immunity during Mycobacterium tuberculosis infection. The immunoregulatory and cytotoxic activities of natural killer (NK) cells are essential at the site of infection during tuberculous pleurisy. The frequency, subtypes, and expression of phenotype markers and chemokine receptors on NK cells were assessed by flow cytometry in tuberculous (TB) and nontuberculous (NTB) pleural fluid (PF). Chemotaxis was also shown in response to chemokines. A significant decrease in CD56(dim) with no change in CD56(bright) NK cells was observed, while a significant increase in activation markers and Toll-like receptors (TLRs) was observed on TB-PF CD56(bright) NK cells. Significantly increased expression of chemokine receptors CCR1, CCR2 and CCR7 on CD56(bright) and CCR5 on CD56(dim) NK cells was observed in the TB group. Transmigration of TB-PF NK cells was significantly high in response to IL-8, IP-10, MCP-1 and SLC. Transmigrated TB-NK cells showed a significant increase in CXCR2, CCR2 and CCR7 expression. The study suggests that CD56(bright) NK cells may recognize M. tuberculosis directly using TLRs, HLA-DR and express CD69 as an early activation marker. In addition, CC chemokines induce activation signals in chemokine receptors mediating differential NK cell migration to the site. Thus, NK cells act as first direct sensors and effectors in mycobacterial infection.
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Affiliation(s)
- Supriya Pokkali
- Department of Immunology, Tuberculosis Research Centre ICMR, Chennai, India
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45
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Mehrotra S, Mougiakakos D, Christian Johansson C, Voelkel‐Johnson C, Kiessling R. Chapter 6 Oxidative Stress and Lymphocyte Persistence. Adv Cancer Res 2009; 102:197-227. [DOI: 10.1016/s0065-230x(09)02006-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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46
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Marcenaro E, Ferranti B, Falco M, Moretta L, Moretta A. Human NK cells directly recognize Mycobacterium bovis via TLR2 and acquire the ability to kill monocyte-derived DC. Int Immunol 2008; 20:1155-67. [DOI: 10.1093/intimm/dxn073] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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47
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Clinical implications of addiction related immunosuppression. J Infect 2008; 56:437-45. [DOI: 10.1016/j.jinf.2008.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2007] [Revised: 03/09/2008] [Accepted: 03/11/2008] [Indexed: 11/20/2022]
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48
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Barcelos W, Sathler-Avelar R, Martins-Filho OA, Carvalho BN, Guimarães TMPD, Miranda SS, Andrade HM, Oliveira MHP, Toledo VPCP. Natural killer cell subpopulations in putative resistant individuals and patients with active Mycobacterium tuberculosis infection. Scand J Immunol 2008; 68:92-102. [PMID: 18484953 DOI: 10.1111/j.1365-3083.2008.02116.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we intended to perform flow-cytometric analyses of peripheral blood NK-cell subsets in patients with active tuberculosis (TB) and those putative resistant subjects displaying positive tuberculin skin test (TST+) and compared with TST- healthy controls. Our findings demonstrated distinct phenotypic features in TST+ as compared with TB. While lower values of NK-cells with increased frequency of CD3-CD16+ CD56- and CD3-CD16-CD56+ subsets besides lower frequency of CD3-CD16+ CD56+ NK-cells was observed in TST+, unaltered levels of NK-cells with increased levels of CD3-CD16+ CD56- NK-cells with lower frequency of CD3-CD16+ CD56+ NK-cells was found in TB. Additional analysis highlighted a shift towards increased levels of CD3-CD16-/+CD56bright NK-cells as the hallmark of TST+, whereas unaltered frequency was observed in TB. Increased levels of CD3+CD56+ cells were observed in both TST+ and TB. Further focusing on the monocyte/NK-cell network, we have reported that enhanced frequency of CD14+ CD16+ monocytes particularly observed in TST+. Outstanding were the distinct correlation profiles observed between CD3-CD16-CD56+ NK-cells and CD3+ CD56+ cells CD14+ CD16+ monocytes for TST+ and TB. These data suggested that high levels of CD3-CD16-CD56+ NK-cells aside CD14+ CD16+ monocytes as well as non-concurrent increment of CD3+ CD56+ cells, may be involved in protective mechanisms in putative tuberculosis-resistant individuals. On the other hand, the basal levels of macrophage-like monocytes despite its positive correlation with increased levels of CD3+ CD56+ cells may count for the lack of the protective immunity in patients with active tuberculosis. Further studies focusing on the cytokine profiling of peripheral blood innate immunity cells before and after chemotherapeutic treatment are currently under evaluation.
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Affiliation(s)
- W Barcelos
- Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
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Direct binding of human NK cell natural cytotoxicity receptor NKp44 to the surfaces of mycobacteria and other bacteria. Infect Immun 2008; 76:1719-27. [PMID: 18212080 DOI: 10.1128/iai.00870-07] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Our previous studies demonstrated that Mycobacterium bovis bacillus Calmette-Guérin (BCG) can directly interact with human NK cells and induce the proliferation, gamma interferon production, and cytotoxic activity of such cells without the need for accessory cells. Thus, the aim of the present study was to identify the putative receptor(s) responsible for the recognition of BCG by human NK cells and potentially involved in the activation of NK cells. To this end, we first investigated the surface expression of three NK cell-activating receptors belonging to the natural cytoxicity receptor (NCR) family on highly purified human NK cells upon in vitro direct stimulation with BCG. An induction of the surface expression of NKp44, but not of NKp30 or NKp46, was observed after 3 and 4 days of in vitro stimulation with live BCG. The NKp44 induction involved mainly a particular NK cell subset expressing the CD56 marker at high density, CD56(bright). In order to establish whether NKp44 could directly bind to BCG, whole BCG cells were stained with soluble forms of the three NCRs chimeric for the human immunoglobulin G (IgG) Fc fragment (NKp30-Fc, NKp44-Fc, NKp46-Fc), followed by incubation with a phycoerythrin (PE)-conjugated goat anti-human IgG antibody. Analysis by flow cytometry of the complexes revealed a higher PE fluorescence intensity for BCG incubated with NKp44-Fc than for BCG incubated with NKp30-Fc, NKp46-Fc, or negative controls. The binding of NKp44-Fc to the BCG surface was confirmed with immunogold labeling using transmission electron microscopy, suggesting the presence of a putative ligand(s) for human NKp44 on the BCG cell wall. Similar binding assays performed on a number of gram-positive and gram-negative bacteria revealed a pattern of NKp44-Fc binding restricted to members of the genus Mycobacterium, to the mycobacterium-related species Nocardia farcinica, and to Pseudomonas aeruginosa. Altogether, the results obtained indicate, for the first time, that at least one member of the NCR family (NKp44) may be involved in the direct recognition of bacterial pathogens by human NK cells.
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Harlin H, Hanson M, Johansson CC, Sakurai D, Poschke I, Norell H, Malmberg KJ, Kiessling R. The CD16- CD56(bright) NK cell subset is resistant to reactive oxygen species produced by activated granulocytes and has higher antioxidative capacity than the CD16+ CD56(dim) subset. THE JOURNAL OF IMMUNOLOGY 2007; 179:4513-9. [PMID: 17878347 DOI: 10.4049/jimmunol.179.7.4513] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Human NK cells can be divided into CD56(dim) and CD56(bright) subsets. These two types of NK cells respond to different types of stimuli, with CD56(dim) NK cells having direct cytotoxic ability and CD56(bright) NK cells having mainly an immunoregulatory function. We show that the CD16+ CD56(dim) NK subset is characterized by sensitivity to cell death induced by activated granulocytes. We identified hydrogen peroxide (H2O2) as the major effector molecule responsible for the cytotoxic effect of granulocytes on CD56(dim) NK cells, because the ability of granulocytes to kill CD56(dim) NK cells was completely abrogated in the presence of the hydrogen peroxide scavenger catalase. When exposing NK cells to H2O2, CD56(dim) cells showed rapid mitochondrial depolarization and down-regulation of activating NKRs, eventually resulting in cell death, whereas CD56(bright) cells remained unaffected. The difference in sensitivity to H2O2 was mirrored by a difference in intracellular oxidation levels between CD56(dim) and CD56(bright) NK cells, and cell lysates from the latter subset possessed a greater ability to block H2O2-mediated oxidation. Our data may explain the preferential accumulation of CD56(bright) NK cells often seen in environments rich in reactive oxygen species, such as at sites of chronic inflammation and in tumors.
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Affiliation(s)
- Helena Harlin
- Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet, Stockholm, Sweden
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