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Vadivel CK, Willerslev-Olsen A, Namini MRJ, Zeng Z, Yan L, Danielsen M, Gluud M, Pallesen EMH, Wojewoda K, Osmancevic A, Hedebo S, Chang YT, Lindahl LM, Koralov SB, Geskin LJ, Bates SE, Iversen L, Litman T, Bech R, Wobser M, Guenova E, Kamstrup MR, Ødum N, Buus TB. Staphylococcus aureus induces drug resistance in cancer T cells in Sézary syndrome. Blood 2024; 143:1496-1512. [PMID: 38170178 PMCID: PMC11033614 DOI: 10.1182/blood.2023021671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/16/2023] [Accepted: 12/17/2023] [Indexed: 01/05/2024] Open
Abstract
ABSTRACT Patients with Sézary syndrome (SS), a leukemic variant of cutaneous T-cell lymphoma (CTCL), are prone to Staphylococcus aureus infections and have a poor prognosis due to treatment resistance. Here, we report that S aureus and staphylococcal enterotoxins (SE) induce drug resistance in malignant T cells against therapeutics commonly used in CTCL. Supernatant from patient-derived, SE-producing S aureus and recombinant SE significantly inhibit cell death induced by histone deacetylase (HDAC) inhibitor romidepsin in primary malignant T cells from patients with SS. Bacterial killing by engineered, bacteriophage-derived, S aureus-specific endolysin (XZ.700) abrogates the effect of S aureus supernatant. Similarly, mutations in major histocompatibility complex (MHC) class II binding sites of SE type A (SEA) and anti-SEA antibody block induction of resistance. Importantly, SE also triggers resistance to other HDAC inhibitors (vorinostat and resminostat) and chemotherapeutic drugs (doxorubicin and etoposide). Multimodal single-cell sequencing indicates T-cell receptor (TCR), NF-κB, and JAK/STAT signaling pathways (previously associated with drug resistance) as putative mediators of SE-induced drug resistance. In support, inhibition of TCR-signaling and Protein kinase C (upstream of NF-κB) counteracts SE-induced rescue from drug-induced cell death. Inversely, SE cannot rescue from cell death induced by the proteasome/NF-κB inhibitor bortezomib. Inhibition of JAK/STAT only blocks rescue in patients whose malignant T-cell survival is dependent on SE-induced cytokines, suggesting 2 distinct ways SE can induce drug resistance. In conclusion, we show that S aureus enterotoxins induce drug resistance in primary malignant T cells. These findings suggest that S aureus enterotoxins cause clinical treatment resistance in patients with SS, and antibacterial measures may improve the outcome of cancer-directed therapy in patients harboring S aureus.
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Affiliation(s)
- Chella Krishna Vadivel
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Willerslev-Olsen
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Martin R. J. Namini
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Ziao Zeng
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Lang Yan
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Maria Danielsen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Maria Gluud
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Emil M. H. Pallesen
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Karolina Wojewoda
- Department of Dermatology and Venereology, Region Västra Götaland, Sahlgrenska University Hospital, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Amra Osmancevic
- Department of Dermatology and Venereology, Region Västra Götaland, Sahlgrenska University Hospital, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Signe Hedebo
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Yun-Tsan Chang
- Department of Dermatology and Venereology, University Hospital Centre (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Lise M. Lindahl
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Sergei B. Koralov
- Department of Pathology, New York University School of Medicine, New York, NY
| | - Larisa J. Geskin
- Department of Dermatology, Columbia University Irving Medical Center, New York, NY
| | - Susan E. Bates
- Division of Hematology/Oncology, Columbia University Herbert Irving Comprehensive Cancer Center, New York, NY
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Thomas Litman
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Rikke Bech
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Marion Wobser
- Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
| | - Emmanuella Guenova
- Department of Dermatology and Venereology, University Hospital Centre (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Maria R. Kamstrup
- Department of Dermatology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Niels Ødum
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Terkild B. Buus
- LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
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Liang W, Li K, Gao H, Li K, Zhang J, Zhang Q, Jiao X, Yang J, Wei X. Full T-cell activation and function in teleosts require collaboration of first and co-stimulatory signals. Zool Res 2024; 45:13-24. [PMID: 38114429 PMCID: PMC10839663 DOI: 10.24272/j.issn.2095-8137.2023.053] [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: 05/06/2023] [Accepted: 09/08/2023] [Indexed: 12/21/2023] Open
Abstract
Mammalian T-cell responses require synergism between the first signal and co-stimulatory signal. However, whether and how dual signaling regulates the T-cell response in early vertebrates remains unknown. In the present study, we discovered that the Nile tilapia ( Oreochromis niloticus) encodes key components of the LAT signalosome, namely, LAT, ITK, GRB2, VAV1, SLP-76, GADS, and PLC-γ1. These components are evolutionarily conserved, and CD3ε mAb-induced T-cell activation markedly increased their expression. Additionally, at least ITK, GRB2, and VAV1 were found to interact with LAT for signalosome formation. Downstream of the first signal, the NF-κB, MAPK/ERK, and PI3K-AKT pathways were activated upon CD3ε mAb stimulation. Furthermore, treatment of lymphocytes with CD28 mAbs triggered the AKT-mTORC1 pathway downstream of the co-stimulatory signal. Combined CD3ε and CD28 mAb stimulation enhanced ERK1/2 and S6 phosphorylation and elevated NFAT1, c-Fos, IL-2, CD122, and CD44 expression, thereby signifying T-cell activation. Moreover, rather than relying on the first or co-stimulatory signal alone, both signals were required for T-cell proliferation. Full T-cell activation was accompanied by marked apoptosis and cytotoxic responses. These findings suggest that tilapia relies on dual signaling to maintain an optimal T-cell response, providing a novel perspective for understanding the evolution of the adaptive immune system.
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Affiliation(s)
- Wei Liang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kang Li
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Haiyou Gao
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kunming Li
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Jiansong Zhang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Qian Zhang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Xinying Jiao
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Jialong Yang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China. E-mail:
| | - Xiumei Wei
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China. E-mail:
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Huang W, Lin W, Chen B, Zhang J, Gao P, Fan Y, Lin Y, Wei P. NFAT and NF-κB dynamically co-regulate TCR and CAR signaling responses in human T cells. Cell Rep 2023; 42:112663. [PMID: 37347664 DOI: 10.1016/j.celrep.2023.112663] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 04/02/2023] [Accepted: 06/02/2023] [Indexed: 06/24/2023] Open
Abstract
While it has been established that the responses of T cells to antigens are combinatorially regulated by multiple signaling pathways, it remains elusive what mechanisms cells utilize to quantitatively modulate T cell responses during pathway integration. Here, we show that two key pathways in T cell signaling, calcium/nuclear factor of activated T cells (NFAT) and protein kinase C (PKC)/nuclear factor κB (NF-κB), integrate through a dynamic and combinatorial strategy to fine-tune T cell response genes. At the cis-regulatory level, the two pathways integrate through co-binding of NFAT and NF-κB to immune response genes. Pathway integration is further regulated temporally, where T cell receptor (TCR) and chimeric antigen receptor (CAR) activation signals modulate the temporal relationships between the nuclear localization dynamics of NFAT and NF-κB. Such physical and temporal integrations together contribute to distinct modes of expression modulation for genes. Thus, the temporal relationships between regulators can be modulated to affect their co-targets during immune responses, underscoring the importance of dynamic combinatorial regulation in cellular signaling.
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Affiliation(s)
- Wen Huang
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China
| | - Wei Lin
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China
| | - Baoqiang Chen
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jianhan Zhang
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China
| | - Peifen Gao
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Yingying Fan
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; Center for Cell and Gene Circuit Design, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yihan Lin
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China.
| | - Ping Wei
- Center for Quantitative Biology and Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; Center for Cell and Gene Circuit Design, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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Sui Y, Li S, Fu XQ, Zhao ZJ, Xing S. Bioinformatics analyses of combined databases identify shared differentially expressed genes in cancer and autoimmune disease. J Transl Med 2023; 21:109. [PMID: 36765396 PMCID: PMC9921081 DOI: 10.1186/s12967-023-03943-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/30/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Inadequate immunity caused by poor immune surveillance leads to tumorigenesis, while excessive immunity due to breakdown of immune tolerance causes autoimmune genesis. Although the function of immunity during the onset of these two processes appears to be distinct, the underlying mechanism is shared. To date, gene expression data for large bodies of clinical samples are available, but the resemblances of tumorigenesis and autoimmune genesis in terms of immune responses remains to be summed up. METHODS Considering the high disease prevalence, we chose invasive ductal carcinoma (IDC) and systemic lupus erythematosus (SLE) to study the potential commonalities of immune responses. We obtained gene expression data of IDC/SLE patients and normal controls from five IDC databases (GSE29044, GSE21422, GSE22840, GSE15852, and GSE9309) and five SLE databases (GSE154851, GSE99967, GSE61635, GSE50635, and GSE17755). We intended to identify genes differentially expressed in both IDC and SLE by using three bioinformatics tools including GEO2R, the limma R package, and Weighted Gene Co-expression Network Analysis (WGCNA) to perform function enrichment, protein-protein network, and signaling pathway analyses. RESULTS The mRNA levels of signal transducer and activator of transcription 1 (STAT1), 2'-5'-oligoadenylate synthetase 1 (OAS1), 2'-5'-oligoadenylate synthetase like (OASL), and PML nuclear body scaffold (PML) were found to be differentially expressed in both IDC and SLE by using three different bioinformatics tools of GEO2R, the limma R package and WGCNA. From the combined databases in this study, the mRNA levels of STAT1 and OAS1 were increased in IDC while reduced in SLE. And the mRNA levels of OASL and PML were elevated in both IDC and SLE. Based on Kyoto Encyclopedia of Genes and Genomes pathway analysis and QIAGEN Ingenuity Pathway Analysis, both IDC and SLE were correlated with the changes of multiple components involved in the Interferon (IFN)-Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathway. CONCLUSION The expression levels of STAT1 and OAS1 manifest the opposite expression tendency across cancer and autoimmune disease. They are components in the IFN-JAK-STAT signaling pathway related to both tumorigenesis and autoimmune genesis. STAT1 and OAS1-associated IFN-JAK-STAT signaling could explain the commonalities during tumorigenesis and autoimmune genesis and render significant information for more precise treatment from the point of immune homeostasis.
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Affiliation(s)
- Yuan Sui
- grid.64924.3d0000 0004 1760 5735Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012 China
| | - Shuping Li
- grid.266902.90000 0001 2179 3618Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104 USA
| | - Xue-Qi Fu
- grid.64924.3d0000 0004 1760 5735Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012 China
| | - Zhizhuang Joe Zhao
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
| | - Shu Xing
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012, China.
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Lee HS, Kim EN, Jeong GS. Ameliorative Effect of Citropten Isolated from Citrusaurantifolia Peel Extract as a Modulator of T Cell and Intestinal Epithelial Cell Activity in DSS-Induced Colitis. Molecules 2022; 27:molecules27144633. [PMID: 35889507 PMCID: PMC9321940 DOI: 10.3390/molecules27144633] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/18/2022] [Accepted: 07/18/2022] [Indexed: 02/01/2023] Open
Abstract
Citropten is a coumarin that is mainly found in fruits of Rutaceae trees, but its anti-inflammatory activities in colitis is still unknown. In this study, we investigated its attenuating effect of citropten isolated from Citrus aurantifolia extract on DSS-induced colitis through the modulation of the activity of T cells and intestinal epithelial cells. We found that pre-treatment with citropten downregulates the activity of T cells and intestinal epithelial cells without a negative effect on the viability of Jurkat and HT-29 cells. The results from the Western blot analysis revealed that pre-treatment with citropten reduces the NFκB and MAPK signaling pathway in activated T cells and intestinal epithelial cells. We elucidated that the oral administration of citropten alleviates the colonic inflammation and activity of effector T cells in DSS-induced colitis by measuring changes in body weight, histological scoring from H&E-stained sections, mRNA levels of pro-inflammatory cytokines and the phosphorylation level of the MAPK signaling pathway.
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Affiliation(s)
- Hyun-Su Lee
- Department of Physiology, School of Medicine, Daegu Catholic University, Daegu 42472, Korea;
| | - Eun-Nam Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
| | - Gil-Saeng Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
- Correspondence:
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6
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Eapen AA, Parameswaran S, Forney C, Edsall LE, Miller D, Donmez O, Dunn K, Lu X, Granitto M, Rowden H, Magier AZ, Pujato M, Chen X, Kaufman K, Bernstein DI, Devonshire AL, Rothenberg ME, Weirauch MT, Kottyan LC. Epigenetic and transcriptional dysregulation in CD4+ T cells in patients with atopic dermatitis. PLoS Genet 2022; 18:e1009973. [PMID: 35576187 PMCID: PMC9135339 DOI: 10.1371/journal.pgen.1009973] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 05/26/2022] [Accepted: 04/20/2022] [Indexed: 12/30/2022] Open
Abstract
Atopic dermatitis (AD) is one of the most common skin disorders among children. Disease etiology involves genetic and environmental factors, with 29 independent AD risk loci enriched for risk allele-dependent gene expression in the skin and CD4+ T cell compartments. We investigated the potential epigenetic mechanisms responsible for the genetic susceptibility of CD4+ T cells. To understand the differences in gene regulatory activity in peripheral blood T cells in AD, we measured chromatin accessibility (an assay based on transposase-accessible chromatin sequencing, ATAC-seq), nuclear factor kappa B subunit 1 (NFKB1) binding (chromatin immunoprecipitation with sequencing, ChIP-seq), and gene expression levels (RNA-seq) in stimulated CD4+ T cells from subjects with active moderate-to-severe AD, as well as in age-matched non-allergic controls. Open chromatin regions in stimulated CD4+ T cells were highly enriched for AD genetic risk variants, with almost half of the AD risk loci overlapping AD-dependent ATAC-seq peaks. AD-specific open chromatin regions were strongly enriched for NF-κB DNA-binding motifs. ChIP-seq identified hundreds of NFKB1-occupied genomic loci that were AD- or control-specific. As expected, the AD-specific ChIP-seq peaks were strongly enriched for NF-κB DNA-binding motifs. Surprisingly, control-specific NFKB1 ChIP-seq peaks were not enriched for NFKB1 motifs, but instead contained motifs for other classes of human transcription factors, suggesting a mechanism involving altered indirect NFKB1 binding. Using DNA sequencing data, we identified 63 instances of altered genotype-dependent chromatin accessibility at 36 AD risk variant loci (30% of AD risk loci) that might lead to genotype-dependent gene expression. Based on these findings, we propose that CD4+ T cells respond to stimulation in an AD-specific manner, resulting in disease- and genotype-dependent chromatin accessibility alterations involving NFKB1 binding.
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Affiliation(s)
- Amy A. Eapen
- Division of Allergy and Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Allergy and Clinical Immunology, Henry Ford Health System, Detroit, Michigan, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Sreeja Parameswaran
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Carmy Forney
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Lee E. Edsall
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Daniel Miller
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Omer Donmez
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Katelyn Dunn
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Xiaoming Lu
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Marissa Granitto
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Hope Rowden
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Adam Z. Magier
- Division of Allergy and Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Mario Pujato
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Xiaoting Chen
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Kenneth Kaufman
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Divisions of Biomedical Informatics and Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Cincinnati Veterans Administration, Cincinnati, Ohio, United States of America
| | - David I. Bernstein
- Division of Immunology, Allergy, and Rheumatology, University of Cincinnati, College of Medicine, Cincinnati, Ohio, United States of America
| | - Ashley L. Devonshire
- Division of Allergy and Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Marc E. Rothenberg
- Division of Allergy and Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Matthew T. Weirauch
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Divisions of Biomedical Informatics and Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Leah C. Kottyan
- Division of Allergy and Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
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Repression of T cell-mediated alloimmunity by CX-5461 via the p53-DUSP5 pathway. Pharmacol Res 2022; 177:106120. [DOI: 10.1016/j.phrs.2022.106120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/30/2022] [Accepted: 02/03/2022] [Indexed: 12/19/2022]
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8
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Otano I, Azpilikueta A, Glez-Vaz J, Alvarez M, Medina-Echeverz J, Cortés-Domínguez I, Ortiz-de-Solorzano C, Ellmark P, Fritzell S, Hernandez-Hoyos G, Nelson MH, Ochoa MC, Bolaños E, Cuculescu D, Jaúregui P, Sanchez-Gregorio S, Etxeberria I, Rodriguez-Ruiz ME, Sanmamed MF, Teijeira Á, Berraondo P, Melero I. CD137 (4-1BB) costimulation of CD8 + T cells is more potent when provided in cis than in trans with respect to CD3-TCR stimulation. Nat Commun 2021; 12:7296. [PMID: 34911975 PMCID: PMC8674279 DOI: 10.1038/s41467-021-27613-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 11/11/2021] [Indexed: 12/11/2022] Open
Abstract
CD137 (4-1BB; TNFSR9) is an activation-induced surface receptor that through costimulation effects provide antigen-primed T cells with augmented survival, proliferation and effector functions as well as metabolic advantages. These immunobiological mechanisms are being utilised for cancer immunotherapy with agonist CD137-binding and crosslinking-inducing agents that elicit CD137 intracellular signaling. In this study, side-by-side comparisons show that provision of CD137 costimulation in-cis with regard to the TCR-CD3-ligating cell is superior to that provided in-trans in terms of T cell activation, proliferation, survival, cytokine secretion and mitochondrial fitness in mouse and human. Cis ligation of CD137 relative to the TCR-CD3 complex results in more intense canonical and non-canonical NF-κB signaling and provides a more robust induction of cell cycle and DNA damage repair gene expression programs. Here we report that the superiority of cis versus trans CD137-costimulation is readily observed in vivo and is relevant for understanding the immunotherapeutic effects of CAR T cells and CD137 agonistic therapies currently undergoing clinical trials, which may provide costimulation either in cis or in trans.
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Affiliation(s)
- Itziar Otano
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain.
- H12O-CNIO Lung Cancer Clinical Research Unit, Health Research Institute Hospital 12 de Octubre/ Spanish National Cancer Research Center (CNIO), Madrid, Spain.
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain.
| | - Arantza Azpilikueta
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Javier Glez-Vaz
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Maite Alvarez
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | | | - Ivan Cortés-Domínguez
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Program of Solid Tumours, Cima Universidad de Navarra, Pamplona, Spain
| | - Carlos Ortiz-de-Solorzano
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Program of Solid Tumours, Cima Universidad de Navarra, Pamplona, Spain
| | - Peter Ellmark
- Alligator Bioscience, Lund, Sweden
- Department of Immunotechnology, Lund University, Lund, Sweden
| | | | | | | | - María Carmen Ochoa
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain
| | - Elixabet Bolaños
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain
| | - Doina Cuculescu
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Patricia Jaúregui
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Sandra Sanchez-Gregorio
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain
| | - Iñaki Etxeberria
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - María E Rodriguez-Ruiz
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Radiation Oncology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Miguel F Sanmamed
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Oncology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Álvaro Teijeira
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain
| | - Pedro Berraondo
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Ignacio Melero
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain.
- H12O-CNIO Lung Cancer Clinical Research Unit, Health Research Institute Hospital 12 de Octubre/ Spanish National Cancer Research Center (CNIO), Madrid, Spain.
- Spanish Center for Biomedical Research Network in Oncology (CIBERONC), Madrid, Spain.
- Navarra Institute for Health Research (IDISNA), Pamplona, Spain.
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain.
- Department of Oncology, Clínica Universidad de Navarra, Pamplona, Spain.
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9
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Hierarchy of signaling thresholds downstream of the T cell receptor and the Tec kinase ITK. Proc Natl Acad Sci U S A 2021; 118:2025825118. [PMID: 34452995 DOI: 10.1073/pnas.2025825118] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The strength of peptide:MHC interactions with the T cell receptor (TCR) is correlated with the time to first cell division, the relative scale of the effector cell response, and the graded expression of activation-associated proteins like IRF4. To regulate T cell activation programming, the TCR and the TCR proximal interleukin-2-inducible T cell kinase (ITK) simultaneously trigger many biochemically separate signaling cascades. T cells lacking ITK exhibit selective impairments in effector T cell responses after activation, but under the strongest signaling conditions, ITK activity is dispensable. To gain insight into whether TCR signal strength and ITK activity tune observed graded gene expression through the unequal activation of distinct signaling pathways, we examined Erk1/2 phosphorylation or nuclear factor of activated T cells (NFAT) and nuclear factor (NF)-κB translocation in naïve OT-I CD8+ cell nuclei. We observed the consistent digital activation of NFAT1 and Erk1/2, but NF-κB displayed dynamic, graded activation in response to variation in TCR signal strength, tunable by treatment with an ITK inhibitor. Inhibitor-treated cells showed the dampened induction of AP-1 factors Fos and Fosb, NF-κB response gene transcripts, and survival factor Il2 transcripts. ATAC sequencing analysis also revealed that genomic regions most sensitive to ITK inhibition were enriched for NF-κB and AP-1 motifs. Specific inhibition of NF-κB during peptide stimulation tuned the expression of early gene products like c-Fos. Together, these data indicate a key role for ITK in orchestrating the optimal activation of separate TCR downstream pathways, specifically aiding NF-κB activation. More broadly, we revealed a mechanism by which variations in TCR signal strength can produce patterns of graded gene expression in activated T cells.
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10
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Dadwal N, Mix C, Reinhold A, Witte A, Freund C, Schraven B, Kliche S. The Multiple Roles of the Cytosolic Adapter Proteins ADAP, SKAP1 and SKAP2 for TCR/CD3 -Mediated Signaling Events. Front Immunol 2021; 12:703534. [PMID: 34295339 PMCID: PMC8290198 DOI: 10.3389/fimmu.2021.703534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/21/2021] [Indexed: 12/24/2022] Open
Abstract
T cells are the key players of the adaptive immune response. They coordinate the activation of other immune cells and kill malignant and virus-infected cells. For full activation T cells require at least two signals. Signal 1 is induced after recognition of MHC/peptide complexes presented on antigen presenting cells (APCs) by the clonotypic TCR (T-cell receptor)/CD3 complex whereas Signal 2 is mediated via the co-stimulatory receptor CD28, which binds to CD80/CD86 molecules that are present on APCs. These signaling events control the activation, proliferation and differentiation of T cells. In addition, triggering of the TCR/CD3 complex induces the activation of the integrin LFA-1 (leukocyte function associated antigen 1) leading to increased ligand binding (affinity regulation) and LFA-1 clustering (avidity regulation). This process is termed "inside-out signaling". Subsequently, ligand bound LFA-1 transmits a signal into the T cells ("outside-in signaling") which enhances T-cell interaction with APCs (adhesion), T-cell activation and T-cell proliferation. After triggering of signal transducing receptors, adapter proteins organize the proper processing of membrane proximal and intracellular signals as well as the activation of downstream effector molecules. Adapter proteins are molecules that lack enzymatic or transcriptional activity and are composed of protein-protein and protein-lipid interacting domains/motifs. They organize and assemble macromolecular complexes (signalosomes) in space and time. Here, we review recent findings regarding three cytosolic adapter proteins, ADAP (Adhesion and Degranulation-promoting Adapter Protein), SKAP1 and SKAP2 (Src Kinase Associated Protein 1 and 2) with respect to their role in TCR/CD3-mediated activation, proliferation and integrin regulation.
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Affiliation(s)
- Nirdosh Dadwal
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Charlie Mix
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation (GCI3), Medical Faculty of the Otto-von-Guericke University, Magdeburg, Germany
| | - Annegret Reinhold
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation (GCI3), Medical Faculty of the Otto-von-Guericke University, Magdeburg, Germany
| | - Amelie Witte
- Coordination Center of Clinical Trials, University Medicine Greifswald, Greifswald, Germany
| | - Christian Freund
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Burkhart Schraven
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation (GCI3), Medical Faculty of the Otto-von-Guericke University, Magdeburg, Germany
| | - Stefanie Kliche
- Institute of Molecular and Clinical Immunology, Health Campus Immunology, Infectiology and Inflammation (GCI3), Medical Faculty of the Otto-von-Guericke University, Magdeburg, Germany
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11
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Bhingardive V, Kossover A, Iraqi M, Khand B, Le Saux G, Porgador A, Schvartzman M. Antibody-Functionalized Nanowires: A Tuner for the Activation of T Cells. NANO LETTERS 2021; 21:4241-4248. [PMID: 33989498 DOI: 10.1021/acs.nanolett.1c00245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
T cells sense both chemical cues delivered by antigen molecules and physical cues delivered by the environmental elasticity and topography; yet, it is still largely unclear how these cues cumulatively regulate the immune activity of T cells. Here, we engineered a nanoscale platform for ex vivo stimulation of T cells based on antigen-functionalized nanowires. The nanowire topography and elasticity, as well as the immobilized antigens, deliver the physical and chemical cues, respectively, enabling the systematic study of the integrated effect of these cues on a T cell's immune response. We found that T cells sense both the topography and bending modulus of the nanowires and modulate their signaling, degranulation, and cytotoxicity with the variation in these physical features. Our study provides an important insight into the physical mechanism of T cell activation and paves the way to novel nanomaterials for the controlled ex vivo activation of T cells in immunotherapy.
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12
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Cai Y, Ma F, Qu L, Liu B, Xiong H, Ma Y, Li S, Hao H. Weighted Gene Co-expression Network Analysis of Key Biomarkers Associated With Bronchopulmonary Dysplasia. Front Genet 2020; 11:539292. [PMID: 33033495 PMCID: PMC7509191 DOI: 10.3389/fgene.2020.539292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/18/2020] [Indexed: 12/05/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a complex disorder resulting from interactions between genes and the environment. The accurate molecular etiology of BPD remains largely unclear. This study aimed to identify key BPD-associated genes and pathways functionally enriched using weighted gene co-expression network analysis (WGCNA). We analyzed microarray data of 62 pre-term patients with BPD and 38 pre-term patients without BPD from Gene Expression Omnibus (GEO). WGCNA was used to construct a gene expression network, and genes were classified into definite modules. In addition, the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of BPD-related hub genes were performed. Firstly, we constructed a weighted gene co-expression network, and genes were divided into 10 modules. Among the modules, the yellow module was related to BPD progression and severity and included the following hub genes: MMP25, MMP9, SIRPA, CKAP4, SLCO4C1, and SLC2A3; and the red module included some co-expression molecules that displayed a continuous decline in expression with BPD progression and included the following hub genes: LEF1, ITK, CD6, RASGRP1, IL7R, SKAP1, CD3E, and ICOS. GO and KEGG analyses showed that high expression of inflammatory response-related genes and low expression of T cell receptor activation-related genes are significantly correlated with BPD progression. The present WGCNA-based study thus provides an overall perspective of BPD and lays the foundation for identifying potential pathways and hub genes that contribute to the development of BPD.
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Affiliation(s)
- Yao Cai
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fei Ma
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - LiuHong Qu
- Department of Neonatology, The Maternal and Child Health Care Hospital of Huadu, Guangzhou, China.,Huadu Affiliated Hospital of Guangdong Medical University, Guangzhou, China
| | - Binqing Liu
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hui Xiong
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yanmei Ma
- Laboratory of Inborn Metabolism Errors, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sitao Li
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hu Hao
- Department of Neonatology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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13
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Xu W, Chen S, Wang X, Tanaka S, Onda K, Sugiyama K, Yamada H, Hirano T. Molecular mechanisms and therapeutic implications of tetrandrine and cepharanthine in T cell acute lymphoblastic leukemia and autoimmune diseases. Pharmacol Ther 2020; 217:107659. [PMID: 32800789 DOI: 10.1016/j.pharmthera.2020.107659] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Indexed: 02/08/2023]
Abstract
Inappropriately activated T cells mediate autoimmune diseases and T cell acute lymphoblastic leukemia (T-ALL). Glucocorticoid and chemotherapeutic agents have largely extended lives of these patients. However, serious side effects and drug resistance often limit the prognosis of considerable number of the patients. The efficient treatment of autoimmune diseases or T-ALL with drug resistance remains an important unmet demand clinically. Bisbenzylisoquinoline alkaloids tetrandrine and cepharanthine have been applied for the treatment of certain types of autoimmune diseases and cancers, while studies on their action mechanisms and their further applications combined with glucocorticoids or chemotherapeutic agents remains to be expanded. This review introduced molecular mechanisms of tetrandrine and cepharanthine in T cells, including their therapeutic implications. Both tetrandrine and cepharnthine influence the growth of activated T cells via several kinds of signaling pathways, such as NF-κB, caspase cascades, cell cycle, MAPK, and PI3K/Akt/mTOR. According to recent preclinical and clinical studies, P-glycoprotein inhibitory effect of tetrandrine and cepharnthine could play a significant role on T cell-involved refractory diseases. Therefore, tetrandrine or cepharanthine combined with glucocorticoid or other anti-leukemia drugs would bring a new hope for patients with glucocorticoid-resistant autoimmune disease or refractory T-ALL accompanied with functional P-glycoprotein. In conclusion, bisbenzylisoquinoline alkaloids tetrandrine and cepharanthine can regulate several signaling pathways in abnormally activated T cells with low toxicity. Bisbenzylisoquinoline alkaloids deserve to be paid more attention as a lead compound to develop new drugs for the treatment of T cell-involved diseases in the future.
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Affiliation(s)
- Wencheng Xu
- Department of Pharmacy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, PR China; Institute of Traditional Chinese Medicine, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, PR China
| | - Shuhe Chen
- Department of Pharmacy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, PR China; Institute of Traditional Chinese Medicine, Hubei Province Academy of Traditional Chinese Medicine, Wuhan, PR China
| | - Xiaoqin Wang
- Department of Nephrology, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, PR China.
| | - Sachiko Tanaka
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kenji Onda
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kentaro Sugiyama
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Haruki Yamada
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
| | - Toshihiko Hirano
- Department of Clinical Pharmacology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
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14
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Remke N, Bisht S, Oberbeck S, Nolting J, Brossart P. Selective BET-bromodomain inhibition by JQ1 suppresses dendritic cell maturation and antigen-specific T-cell responses. Cancer Immunol Immunother 2020; 70:107-121. [PMID: 32651619 DOI: 10.1007/s00262-020-02665-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 07/07/2020] [Indexed: 12/17/2022]
Abstract
Bromo- and extra-terminal domain (BET) inhibitors represent potential therapeutic approaches in solid and hematological malignancies that are currently analyzed in several clinical trials. Additionally, BET are involved in the epigenetic regulation of immune responses by macrophages and dendritic cells (DCs), that play a central role in the regulation of immune responses, indicating that cancer treatment with BET inhibitors can promote immunosuppressive effects. The aim of this study was to further characterize the effects of selective BET inhibition by JQ1 on DC maturation and DC-mediated antigen-specific T-cell responses. Selective BET inhibition by JQ1 impairs LPS-induced DC maturation and inhibits the migrational activity of DCs, while antigen uptake is not affected. JQ1-treated DCs show reduced ability to induce antigen-specific T-cell proliferation. Moreover, antigen-specific T cells co-cultured with JQ1-treated DCs exhibit an inactive phenotype and reduced cytokine production. JQ1-treated mice show reduced immune responses in vivo to sublethal doses of LPS, characterized by a reduced white blood cell count, an immature phenotype of splenic DCs and T cells and lower blood levels of IL-6. In our study, we demonstrate that selective BET inhibition by JQ1, a drug currently tested in clinical trials for malignant diseases, has profound effects on DC maturation and DC-mediated antigen-specific T-cell responses. These immunosuppressive effects can result in the induction of possible infectious side effects in cancer treatments. In addition, based on our results, these compounds should not be used in combinatorial regimes using immunotherapeutic approaches such as check point inhibitors, T-cell therapies, or vaccines.
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Affiliation(s)
- Niklas Remke
- Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital of Bonn, Venusberg-Campus 1, 53127, Bonn, Germany
| | - Savita Bisht
- Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital of Bonn, Venusberg-Campus 1, 53127, Bonn, Germany
| | - Sebastian Oberbeck
- Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital of Bonn, Venusberg-Campus 1, 53127, Bonn, Germany
| | - Jens Nolting
- Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital of Bonn, Venusberg-Campus 1, 53127, Bonn, Germany
| | - Peter Brossart
- Department of Oncology, Hematology, Immuno-Oncology and Rheumatology, University Hospital of Bonn, Venusberg-Campus 1, 53127, Bonn, Germany.
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15
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Bhattacharyya ND, Feng CG. Regulation of T Helper Cell Fate by TCR Signal Strength. Front Immunol 2020; 11:624. [PMID: 32508803 PMCID: PMC7248325 DOI: 10.3389/fimmu.2020.00624] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/19/2020] [Indexed: 12/16/2022] Open
Abstract
T cells are critical in orchestrating protective immune responses to cancer and an array of pathogens. The interaction between a peptide MHC (pMHC) complex on antigen presenting cells (APCs) and T cell receptors (TCRs) on T cells initiates T cell activation, division, and clonal expansion in secondary lymphoid organs. T cells must also integrate multiple T cell-intrinsic and extrinsic signals to acquire the effector functions essential for the defense against invading microbes. In the case of T helper cell differentiation, while innate cytokines have been demonstrated to shape effector CD4+ T lymphocyte function, the contribution of TCR signaling strength to T helper cell differentiation is less understood. In this review, we summarize the signaling cascades regulated by the strength of TCR stimulation. Various mechanisms in which TCR signal strength controls T helper cell expansion and differentiation are also discussed.
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Affiliation(s)
- Nayan D Bhattacharyya
- Immunology and Host Defense Group, Discipline of Infectious Diseases and Immunology, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.,Tuberculosis Research Program, Centenary Institute, The University of Sydney, Sydney, NSW, Australia
| | - Carl G Feng
- Immunology and Host Defense Group, Discipline of Infectious Diseases and Immunology, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.,Tuberculosis Research Program, Centenary Institute, The University of Sydney, Sydney, NSW, Australia
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16
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Böll S, Ziemann S, Ohl K, Klemm P, Rieg AD, Gulbins E, Becker KA, Kamler M, Wagner N, Uhlig S, Martin C, Tenbrock K, Verjans E. Acid sphingomyelinase regulates T H 2 cytokine release and bronchial asthma. Allergy 2020; 75:603-615. [PMID: 31494944 DOI: 10.1111/all.14039] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 08/01/2019] [Accepted: 08/19/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Allergic diseases and especially allergic asthma are widespread diseases with high prevalence in childhood, but also in adults. Acid sphingomyelinase (ASM) is a key regulator of the sphingolipid pathway. Previous studies defined the association of ASM with the pathogenesis of TH 1-directed lung diseases like cystic fibrosis and acute lung injury. Here, we define the role of ASM in TH 2-regulated allergic bronchial asthma. METHODS To determine the role of Asm under baseline conditions, wild-type (WT) and Asm-/- mice were ventilated with a flexiVent setup and bronchial hyperresponsiveness was determined using acetylcholine. Flow cytometry and cytokine measurements in bronchoalveolar lavage fluid and lung tissue were followed by in vitro TH 2 differentiations with cells from WT and Asm-/- mice and blockade of Asm with amitriptyline. As proof of principle, we conducted an ovalbumin-induced model of asthma in WT- and Asm-/- mice. RESULTS At baseline, Asm-/- mice showed better lung mechanics, but unaltered bronchial hyperresponsiveness. Higher numbers of Asm-/- T cells in bronchoalveolar lavage fluid released lower levels of IL-4 and IL-5, and these results were paralleled by decreased production of typical TH 2 cytokines in Asm-/- T lymphocytes in vitro. This phenotype could be imitated by incubation of T cells with amitriptyline. In the ovalbumin asthma model, Asm-/- animals were protected from high disease activity and showed better lung functions and lower levels of eosinophils and TH 2 cytokines. CONCLUSION Asm deficiency could induce higher numbers of TH 2 cells in the lung, but those cells release decreased TH 2 cytokine levels. Hereby, Asm-/- animals are protected from bronchial asthma, which possibly offers novel therapeutic strategies, for example, with ASM blockade.
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Affiliation(s)
- Svenja Böll
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Sebastian Ziemann
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
- Department of Anaesthesiology Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Kim Ohl
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Patricia Klemm
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Annette D. Rieg
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
- Department of Anaesthesiology Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Erich Gulbins
- Department of Molecular Biology University Hospital Essen University of Duisburg‐Essen Essen Germany
- Department of Surgery University of Cincinnati Cincinnati OH USA
| | - Katrin Anne Becker
- Department of Molecular Biology University Hospital Essen University of Duisburg‐Essen Essen Germany
| | - Markus Kamler
- Thoracic Transplantation Thoracic and Cardiovascular Surgery University Hospital Essen University of Duisburg‐Essen Essen Germany
| | - Norbert Wagner
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Stefan Uhlig
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Christian Martin
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Klaus Tenbrock
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
| | - Eva Verjans
- Department of Pediatrics Medical Faculty RWTH Aachen University University Hospital Aachen Aachen Germany
- Institute of Pharmacology and Toxicology RWTH Aachen University University Hospital Aachen Aachen Germany
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17
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Nau GJ, Horzempa J, O’Dee D, Brown MJ, Russo BC, Hernandez A, Dillon ST, Cheng J, Kane LP, Sanker S, Hukriede NA. A predicted Francisella tularensis DXD-motif glycosyltransferase blocks immune activation. Virulence 2019; 10:643-656. [PMID: 31314675 PMCID: PMC6650193 DOI: 10.1080/21505594.2019.1631662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 06/07/2019] [Indexed: 02/04/2023] Open
Abstract
Pathogens enhance their survival during infections by manipulating host defenses. Francisella tularensis evades innate immune responses, which we have found to be dependent on an understudied gene ybeX (FTL_0883/FTT_0615c). To understand the function of YbeX, we sought protein interactors in F. tularensis subsp. holarctica live vaccine strain (LVS). An unstudied Francisella protein co-immunoprecipitated with recombinant YbeX, which is a predicted glycosyltransferase with a DXD-motif. There are up to four genomic copies of this gene with identical sequence in strains of F. tularensis pathogenic to humans, despite ongoing genome decay. Disruption mutations were generated by intron insertion into all three copies of this glycosyltransferase domain containing gene in LVS, gdcA1-3. The resulting strains stimulated more cytokines from macrophages in vitro than wild-type LVS and were attenuated in two in vivo infection models. GdcA was released from LVS during culture and was sufficient to block NF-κB activation when expressed in eukaryotic cells. When co-expressed in zebrafish, GdcA and YbeX were synergistically lethal to embryo development. Glycosyltransferases with DXD-motifs are found in a variety of pathogens including NleB, an Escherichia coli type-III secretion system effector that inhibits NF-κB by antagonizing death receptor signaling. To our knowledge, GdcA is the first DXD-motif glycosyltransferase that inhibits NF-κB in immune cells. Together, these findings suggest DXD-motif glycosyltransferases may be a conserved virulence mechanism used by pathogenic bacteria to remodel host defenses.
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Affiliation(s)
- Gerard J. Nau
- Division of Infectious Diseases, Alpert Medical School of Brown University, Providence, RI, USA
| | - Joseph Horzempa
- Department of Natural Sciences and Mathematics, West Liberty University, West Liberty, WV, USA
| | - Dawn O’Dee
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Matthew J. Brown
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Brian C. Russo
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Ana Hernandez
- Division of Infectious Diseases, Alpert Medical School of Brown University, Providence, RI, USA
| | - Simon T. Dillon
- Beth Israel Deaconess Medical Center Genomics, Proteomics, and Systems Biology Center, Harvard Medical School, Boston, MA, USA
| | - Jing Cheng
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Lawrence P. Kane
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Subramaniam Sanker
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Neil A. Hukriede
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Center for Critical Care Nephrology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Alternate NF-κB-Independent Signaling Reactivation of Latent HIV-1 Provirus. J Virol 2019; 93:JVI.00495-19. [PMID: 31243131 DOI: 10.1128/jvi.00495-19] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/16/2019] [Indexed: 12/22/2022] Open
Abstract
Current combination antiretroviral therapies (cART) are unable to eradicate HIV-1 from infected individuals because of the establishment of proviral latency in long-lived cellular reservoirs. The shock-and-kill approach aims to reactivate viral replication from the latent state (shock) using latency-reversing agents (LRAs), followed by the elimination of reactivated virus-producing cells (kill) by specific therapeutics. The NF-κB RelA/p50 heterodimer has been characterized as an essential component of reactivation of the latent HIV-1 long terminal repeat (LTR). Nevertheless, prolonged NF-κB activation contributes to the development of various autoimmune, inflammatory, and malignant disorders. In the present study, we established a cellular model of HIV-1 latency in J-Lat CD4+ T cells that stably expressed the NF-κB superrepressor IκB-α 2NΔ4 and demonstrate that conventional treatments with bryostatin-1 and hexamethylenebisacetamide (HMBA) or ionomycin synergistically reactivated HIV-1 from latency, even under conditions where NF-κB activation was repressed. Using specific calcineurin phosphatase, p38, and MEK1/MEK2 kinase inhibitors or specific short hairpin RNAs, c-Jun was identified to be an essential factor binding to the LTR enhancer κB sites and mediating the combined synergistic reactivation effect. Furthermore, acetylsalicylic acid (ASA), a potent inhibitor of the NF-κB activator kinase IκB kinase β (IKK-β), did not significantly diminish reactivation in a primary CD4+ T central memory (TCM) cell latency model. The present work demonstrates that the shock phase of the shock-and-kill approach to reverse HIV-1 latency may be achieved in the absence of NF-κB, with the potential to avoid unwanted autoimmune- and or inflammation-related side effects associated with latency-reversing strategies.IMPORTANCE The shock-and-kill approach consists of the reactivation of HIV-1 replication from latency using latency-reversing agents (LRAs), followed by the elimination of reactivated virus-producing cells. The cellular transcription factor NF-κB is considered a master mediator of HIV-1 escape from latency induced by LRAs. Nevertheless, a systemic activation of NF-κB in HIV-1-infected patients resulting from the combined administration of different LRAs could represent a potential risk, especially in the case of a prolonged treatment. We demonstrate here that conventional treatments with bryostatin-1 and hexamethylenebisacetamide (HMBA) or ionomycin synergistically reactivate HIV-1 from latency, even under conditions where NF-κB activation is repressed. Our study provides a molecular proof of concept for the use of anti-inflammatory drugs, like aspirin, capable of inhibiting NF-κB in patients under combination antiretroviral therapy during the shock-and-kill approach, to avoid potential autoimmune and inflammatory disorders that can be elicited by combinations of LRAs.
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Perturbation in cellular redox homeostasis: Decisive regulator of T cell mediated immune responses. Int Immunopharmacol 2019; 67:449-457. [DOI: 10.1016/j.intimp.2018.12.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 12/30/2022]
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Redd PS, Lu C, Klement JD, Ibrahim ML, Zhou G, Kumai T, Celis E, Liu K. H3K4me3 mediates the NF-κB p50 homodimer binding to the pdcd1 promoter to activate PD-1 transcription in T cells. Oncoimmunology 2018; 7:e1483302. [PMID: 30228953 DOI: 10.1080/2162402x.2018.1483302] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/12/2018] [Accepted: 05/25/2018] [Indexed: 12/27/2022] Open
Abstract
PD-1 is a co-repressive receptor that curbs T cell activation and thereby serves as a protection mechanism against autoimmunity under physiological conditions. Under pathological conditions, tumor cells express PD-L1 as an adaptive resistant mechanism to suppress PD-1+ T cells to evade host immunosurveillance. PD-1 therefore is a key target in cancer immunotherapy. Despite the extensive studies of PD-1 expression regulation, the pdcd1 transcription machinery and regulatory mechanisms are still not fully understood. We report here that the NF-κB p50 homodimer is a transcription regulator of PD-1 in activated T cells. A putative κB sequence exists at the pdcd1 promoter. All five NF-κB Rel subunits are activated in activated T cells. However, only the p50 homodimer directly binds to the κB sequence at the pccd1 promoter in CD4+ and CD8+ T cells. Deficiency in p50 results in reduced PD-1 expression in both CD4+ and CD8+ T cells in vitro. Using an in vivo mixed bone marrow chimera mouse model, we show that p50 regulates PD-1 expression in a cell-intrinsic way and p50 deficiency leads to decreased PD-1 expression in both antigen-specific CD4+ and CD8+ T cells in vivo. The expression levels of H3K4me3-specific histone methyltransferase increased significantly, resulting in a significant increase in H3K4me3 deposition at the pdcd1 promoter in activated CD4+ and CD8+ T cells. Inhibition of H3K4me3 significantly decreased p50 binding to the pdcd1 promoter and PD-1 expression in a T cell line. Our findings determine that the p50-H3K4me3 axis regulates pdcd1 transcription activation in activated T cells.
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Affiliation(s)
- Priscilla S Redd
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Chunwan Lu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - John D Klement
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Mohammed L Ibrahim
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA
| | - Gang Zhou
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA
| | - Takumi Kumai
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA
| | - Esteban Celis
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Georgia Cancer Center, Medical College of Georgia, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
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21
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Paprocka R, Wiese-Szadkowska M, Helmin-Basa A, Mazur L, Kutkowska J, Michałkiewicz J, Modzelewska-Banachiewicz B, Pazderski L. Synthesis and evaluation of new amidrazone-derived hydrazides as a potential anti-inflammatory agents. MONATSHEFTE FUR CHEMIE 2018; 149:1493-1500. [PMID: 30100633 PMCID: PMC6060958 DOI: 10.1007/s00706-018-2197-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 04/03/2018] [Indexed: 11/15/2022]
Abstract
ABSTRACT The series of new hydrazide derivatives were synthesized in reactions of N3-substituted amidrazones with cyclic anhydrides as potential anti-inflammatory and antibacterial agents. The compounds were characterized by 1H-13C two-dimensional NMR techniques, which revealed the presence of two tautomeric forms in DMSO-d6 solutions, while the molecular structure of one species was confirmed by single-crystal X-ray diffraction. The anti-inflammatory effects of hydrazides on peripheral blood mononuclear cells were experimentally evaluated. Three compounds showed antiproliferative activity comparable to ibuprofen. One derivative demonstrated strong reduction of lymphocyte proliferation stimulated by anti-CD3 antibody (by 90%) and PHA, as well as low cell toxicity. The obtained compounds exhibited relatively weak antibacterial activity; they were more effective against Gram-positive bacterial strains. GRAPHICAL ABSTRACT
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Affiliation(s)
- Renata Paprocka
- Department of Organic Chemistry, Faculty of Pharmacy, Nicolaus Copernicus University in Toruń, Bydgoszcz, Poland
| | | | - Anna Helmin-Basa
- Department of Immunology, Faculty of Pharmacy, Nicolaus Copernicus University in Toruń, Bydgoszcz, Poland
| | - Liliana Mazur
- Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin, Poland
| | - Jolanta Kutkowska
- Department of Genetics and Microbiology, Maria Curie-Sklodowska University, Lublin, Poland
| | - Jacek Michałkiewicz
- Department of Immunology, Faculty of Pharmacy, Nicolaus Copernicus University in Toruń, Bydgoszcz, Poland
- Department of Clinical Microbiology and Immunology, The Children’s Memorial Health Institute, Warsaw, Poland
| | | | - Leszek Pazderski
- Department of Analytical Chemistry and Applied Spectroscopy, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Toruń, Poland
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Hunte R, Alonso P, Thomas R, Bazile CA, Ramos JC, van der Weyden L, Dominguez-Bendala J, Khan WN, Shembade N. CADM1 is essential for KSHV-encoded vGPCR-and vFLIP-mediated chronic NF-κB activation. PLoS Pathog 2018; 14:e1006968. [PMID: 29698475 PMCID: PMC5919438 DOI: 10.1371/journal.ppat.1006968] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/09/2018] [Indexed: 02/06/2023] Open
Abstract
Approximately 12% of all human cancers worldwide are caused by infections with oncogenic viruses. Kaposi's sarcoma herpesvirus/human herpesvirus 8 (KSHV/HHV8) is one of the oncogenic viruses responsible for human cancers, including Kaposi's sarcoma (KS), Primary Effusion Lymphoma (PEL), and the lymphoproliferative disorder multicentric Castleman's disease (MCD). Chronic inflammation mediated by KSHV infection plays a decisive role in the development and survival of these cancers. NF-κB, a family of transcription factors regulating inflammation, cell survival, and proliferation, is persistently activated in KSHV-infected cells. The KSHV latent and lytic expressing oncogenes involved in NF-κB activation are vFLIP/K13 and vGPCR, respectively. However, the mechanisms by which NF-κB is activated by vFLIP and vGPCR are poorly understood. In this study, we have found that a host molecule, Cell Adhesion Molecule 1 (CADM1), is robustly upregulated in KSHV-infected PBMCs and KSHV-associated PEL cells. Further investigation determined that both vFLIP and vGPCR interacted with CADM1. The PDZ binding motif localized at the carboxyl terminus of CADM1 is essential for both vGPCR and vFLIP to maintain chronic NF-κB activation. Membrane lipid raft associated CADM1 interaction with vFLIP is critical for the initiation of IKK kinase complex and NF-κB activation in the PEL cells. In addition, CADM1 played essential roles in the survival of KSHV-associated PEL cells. These data indicate that CADM1 plays key roles in the activation of NF-κB pathways during latent and lytic phases of the KSHV life cycle and the survival of KSHV-infected cells.
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MESH Headings
- Cell Adhesion Molecule-1/genetics
- Cell Adhesion Molecule-1/metabolism
- Herpesvirus 8, Human/pathogenicity
- Humans
- Lymphoma, Primary Effusion/genetics
- Lymphoma, Primary Effusion/metabolism
- Lymphoma, Primary Effusion/virology
- NF-kappa B/genetics
- NF-kappa B/metabolism
- Receptors, Chemokine/genetics
- Receptors, Chemokine/metabolism
- Sarcoma, Kaposi/genetics
- Sarcoma, Kaposi/metabolism
- Sarcoma, Kaposi/virology
- Tumor Cells, Cultured
- Viral Proteins/genetics
- Viral Proteins/metabolism
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Affiliation(s)
- Richard Hunte
- Department of Microbiology and Immunology, Viral Oncology Program, Sylvester Comprehensive Cancer Center, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
| | - Patricia Alonso
- Department of Microbiology and Immunology, Viral Oncology Program, Sylvester Comprehensive Cancer Center, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
| | - Remy Thomas
- Qatar Biomedical Research Institute, Doha, Qatar
| | - Cassandra Alexandria Bazile
- Department of Microbiology and Immunology, Viral Oncology Program, Sylvester Comprehensive Cancer Center, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
| | - Juan Carlos Ramos
- Department of Medicine, Division of Hematology-Oncology, Sylvester Comprehensive Cancer Center, and Center for AIDS Research and Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Louise van der Weyden
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Juan Dominguez-Bendala
- Diabetes Research Institute, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
| | - Wasif Noor Khan
- Department of Microbiology and Immunology, Viral Oncology Program, Sylvester Comprehensive Cancer Center, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
| | - Noula Shembade
- Department of Microbiology and Immunology, Viral Oncology Program, Sylvester Comprehensive Cancer Center, Miller School of Medicine, The University of Miami, Miami, FL, United States of America
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Primate lentiviruses use at least three alternative strategies to suppress NF-κB-mediated immune activation. PLoS Pathog 2017; 13:e1006598. [PMID: 28859166 PMCID: PMC5597281 DOI: 10.1371/journal.ppat.1006598] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 09/13/2017] [Accepted: 08/22/2017] [Indexed: 01/02/2023] Open
Abstract
Primate lentiviruses have evolved sophisticated strategies to suppress the immune response of their host species. For example, HIV-2 and most simian immunodeficiency viruses (SIVs) use their accessory protein Nef to prevent T cell activation and antiviral gene expression by downmodulating the T cell receptor CD3. This Nef function was lost in HIV-1 and other vpu-encoding viruses suggesting that the acquisition of Vpu-mediated NF-κB inhibition reduced the selection pressure for inhibition of T cell activation by Nef. To obtain further insights into the modulation of NF-κB activity by primate lentiviral accessory factors, we analyzed 32 Vpr proteins from a large panel of divergent primate lentiviruses. We found that those of SIVcol and SIVolc infecting Colobinae monkeys showed the highest efficacy in suppressing NF-κB activation. Vpr-mediated inhibition of NF-κB resulted in decreased IFNβ promoter activity and suppressed type I IFN induction in virally infected primary cells. Interestingly, SIVcol and SIVolc differ from all other primate lentiviruses investigated by the lack of both, a vpu gene and efficient Nef-mediated downmodulation of CD3. Thus, primate lentiviruses have evolved at least three alternative strategies to inhibit NF-κB-dependent immune activation. Functional analyses showed that the inhibitory activity of SIVolc and SIVcol Vprs is independent of DCAF1 and the induction of cell cycle arrest. While both Vprs target the IKK complex or a factor further downstream in the NF-κB signaling cascade, only SIVolc Vpr stabilizes IκBα and inhibits p65 phosphorylation. Notably, only de-novo synthesized but not virion-associated Vpr suppressed the activation of NF-κB, thus enabling NF-κB-dependent initiation of viral gene transcription during early stages of the replication cycle, while minimizing antiviral gene expression at later stages. Our findings highlight the key role of NF-κB in antiviral immunity and demonstrate that primate lentiviruses follow distinct evolutionary paths to modulate NF-κB-dependent expression of viral and antiviral genes. The cellular transcription factor NF-κB plays a complex role in the lentiviral replication cycle. On the one hand, activation of NF-κB is required for efficient transcription of viral genes and reactivation of latent proviruses. On the other hand, NF-κB is also a key driver of antiviral gene expression, immune activation and progression to AIDS. As a result, primate lentiviruses tightly regulate the activation of NF-κB throughout their replication cycle to enable transcription of viral genes while minimizing antiviral gene expression. Here, we show that human and simian immunodeficiency viruses have evolved at least three alternative strategies to suppress NF-κB-dependent immune activation: HIV-2 and most SIVs prevent T cell activation via Nef-mediated downmodulation of CD3. In comparison, HIV-1 and its vpu-containing SIV precursors inhibit NF-κB activation via their accessory protein Vpu and lost the CD3 downmodulation function of Nef. Finally, SIVcol and SIVolc, infecting mantled guerezas and olive colobus monkeys, respectively, utilize Vpr. Our findings emphasize the key role of NF-κB as inducer of antiretroviral immune responses and add to the accumulating evidence that lentiviral accessory proteins target innate signaling cascades by sophisticated mechanisms to evade restriction.
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Begalli F, Bennett J, Capece D, Verzella D, D'Andrea D, Tornatore L, Franzoso G. Unlocking the NF-κB Conundrum: Embracing Complexity to Achieve Specificity. Biomedicines 2017; 5:E50. [PMID: 28829404 PMCID: PMC5618308 DOI: 10.3390/biomedicines5030050] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/04/2017] [Accepted: 08/10/2017] [Indexed: 12/12/2022] Open
Abstract
Transcription factors of the nuclear factor κB (NF-κB) family are central coordinating regulators of the host defence responses to stress, injury and infection. Aberrant NF-κB activation also contributes to the pathogenesis of some of the most common current threats to global human health, including chronic inflammatory diseases, autoimmune disorders, diabetes, vascular diseases and the majority of cancers. Accordingly, the NF-κB pathway is widely considered an attractive therapeutic target in a broad range of malignant and non-malignant diseases. Yet, despite the aggressive efforts by the pharmaceutical industry to develop a specific NF-κB inhibitor, none has been clinically approved, due to the dose-limiting toxicities associated with the global suppression of NF-κB. In this review, we summarise the main strategies historically adopted to therapeutically target the NF-κB pathway with an emphasis on oncology, and some of the emerging strategies and newer agents being developed to pharmacologically inhibit this pathway.
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Affiliation(s)
- Federica Begalli
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Jason Bennett
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Daria Capece
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Daniela Verzella
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Daniel D'Andrea
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Laura Tornatore
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
| | - Guido Franzoso
- Centre for Cell Signalling and Inflammation, Department of Medicine, Imperial College London, London W12 0NN, UK.
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Acid sphingomyelinase mediates human CD4 + T-cell signaling: potential roles in T-cell responses and diseases. Cell Death Dis 2017; 8:e2963. [PMID: 28749465 PMCID: PMC5550889 DOI: 10.1038/cddis.2017.360] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/11/2017] [Accepted: 06/14/2017] [Indexed: 12/13/2022]
Abstract
Acid sphingomyelinase (ASM) is a lipid hydrolase. By generating ceramide, ASM had been reported to have an important role in regulating immune cell functions inclusive of macrophages, NK cells, and CD8+ T cells, whereas the role of ASM bioactivity in regulation of human CD4+ T-cell functions remained uncertain. Recent studies have provided novel findings in this field. Upon stimulation of CD3 and/or CD28, ASM-dependent ceramide signaling mediates intracellular downstream signal cascades of CD3 and CD28, and regulates CD4+ T-cell activation and proliferation. Meanwhile, CD39 and CD161 have direct interactions with ASM, which mediates downstream signals inclusive of STAT3 and mTOR and thus defines human Th17 cells. Intriguingly, ASM mediates Th1 responses, but negatively regulates Treg functions. In this review, we summarized the pivotal roles of ASM in regulation of human CD4+ T-cell activation and responses. ASM/sphingolipid signaling may be a novel target for the therapy of human autoimmune diseases.
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Heusinger E, Kirchhoff F. Primate Lentiviruses Modulate NF-κB Activity by Multiple Mechanisms to Fine-Tune Viral and Cellular Gene Expression. Front Microbiol 2017; 8:198. [PMID: 28261165 PMCID: PMC5306280 DOI: 10.3389/fmicb.2017.00198] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 01/27/2017] [Indexed: 12/15/2022] Open
Abstract
The transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) plays a complex role during the replication of primate lentiviruses. On the one hand, NF-κB is essential for induction of efficient proviral gene expression. On the other hand, this transcription factor contributes to the innate immune response and induces expression of numerous cellular antiviral genes. Recent data suggest that primate lentiviruses cope with this challenge by boosting NF-κB activity early during the replication cycle to initiate Tat-driven viral transcription and suppressing it at later stages to minimize antiviral gene expression. Human and simian immunodeficiency viruses (HIV and SIV, respectively) initially exploit their accessory Nef protein to increase the responsiveness of infected CD4+ T cells to stimulation. Increased NF-κB activity initiates Tat expression and productive replication. These events happen quickly after infection since Nef is rapidly expressed at high levels. Later during infection, Nef proteins of HIV-2 and most SIVs exert a very different effect: by down-modulating the CD3 receptor, an essential factor for T cell receptor (TCR) signaling, they prevent stimulation of CD4+ T cells via antigen-presenting cells and hence suppress further induction of NF-κB and an effective antiviral immune response. Efficient LTR-driven viral transcription is maintained because it is largely independent of NF-κB in the presence of Tat. In contrast, human immunodeficiency virus type 1 (HIV-1) and its simian precursors have lost the CD3 down-modulation function of Nef and use the late viral protein U (Vpu) to inhibit NF-κB activity by suppressing its nuclear translocation. In this review, we discuss how HIV-1 and other primate lentiviruses might balance viral and antiviral gene expression through a tight temporal regulation of NF-κB activity throughout their replication cycle.
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Affiliation(s)
- Elena Heusinger
- Institute of Molecular Virology, Ulm University Medical Center Ulm, Germany
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center Ulm, Germany
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27
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Fung-Leung WP, Edwards W, Liu Y, Ngo K, Angsana J, Castro G, Wu N, Liu X, Swanson RV, Wickenden AD. T Cell Subset and Stimulation Strength-Dependent Modulation of T Cell Activation by Kv1.3 Blockers. PLoS One 2017; 12:e0170102. [PMID: 28107393 PMCID: PMC5249144 DOI: 10.1371/journal.pone.0170102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 12/29/2016] [Indexed: 12/28/2022] Open
Abstract
Kv1.3 is a voltage-gated potassium channel expressed on T cells that plays an important role in T cell activation. Previous studies have shown that blocking Kv1.3 channels in human T cells during activation results in reduced calcium entry, cytokine production, and proliferation. The aim of the present study was to further explore the effects of Kv1.3 blockers on the response of different human T cell subsets under various stimulation conditions. Our studies show that, unlike the immune suppressor cyclosporine A, the inhibitory effect of Kv1.3 blockers was partial and stimulation strength dependent, with reduced inhibitory efficacy on T cells under strengthened anti-CD3/CD28 stimulations. T cell responses to allergens including house dust mites and ragweed were partially reduced by Kv1.3 blockers. The effect of Kv1.3 inhibition was dependent on T cell subsets, with stronger effects on CCR7- effector memory compared to CCR7+ central memory CD4 T cells. Calcium entry studies also revealed a population of CD4 T cells resistant to Kv1.3 blockade. Activation of CD4 T cells was accompanied with an increase in Kv1.3 currents but Kv1.3 transcripts were found to be reduced, suggesting a posttranscriptional mechanism in the regulation of Kv1.3 activities. In summary, Kv1.3 blockers inhibit T cell activation in a manner that is highly dependent on the T cell identity and stimulation strength, These findings suggest that Kv1.3 blockers inhibit T cells in a unique, conditional manner, further refining our understanding of the therapeutic potential of Kv1.3 blockers.
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Affiliation(s)
- Wai-Ping Fung-Leung
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
- * E-mail:
| | - Wilson Edwards
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Yi Liu
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Karen Ngo
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Julianty Angsana
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Glenda Castro
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Nancy Wu
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Xuejun Liu
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Ronald V. Swanson
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
| | - Alan D. Wickenden
- Janssen Research & Development, L.L.C., San Diego, California, United States of America
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28
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Ge Y, Huang M, Ma YF. The effects of microRNA-34a regulating Notch-1/NF-κB signaling pathway on lipopolysaccharide-induced human umbilical vein endothelial cells. World J Emerg Med 2017; 8:292-296. [PMID: 29123608 DOI: 10.5847/wjem.j.1920-8642.2017.04.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Notch-1/NF-κB signaling plays a key role in the cecal ligation and puncture (CLP)-induced sepsis. This study aims to investigate the intervention effects of microRNA-34a (miR-34a) lentivirus regulating Notch-1/NF-κB signaling pathway on lipopolysaccharide (LPS)-induced human umbilical vein endothelial cells (HUVEC). METHODS HUVEC were divided into four groups as the following: they were infected with negative control lentivirus (NC group) or miR-34a lentivirus (OE group); LPS (1 μg/mL) was added on the third day on the basis of NC group and OE group for 24 hours (NC+LPS group or OE+LPS group). The levels of TNF-α, IL-1β, IL-6, and IL-10 in the cell supernatants, and the mRNA and protein expression of Notch-1 and NF-κB in the HUVEC were evaluated. RESULTS After 24 hours, the levels of TNF-α, IL-1β, IL-6 in the cell supernatants and the protein expression of NF-κB from NC+LPS group were significantly higher than those of NC group, but IL-10 level and the protein expression of Notch-1 in NC+LPS group were the opposite. After intervention of miR-34a lentivirus, the cell supernatants TNF-α and the protein expression of NF-κB in OE+LPS group after 24 hours markedly decreased compared to NC+LPS group. While the cell supernatants IL-1β and IL-6 and the mRNA expression of NF-κB slightly decreased in OE+LPS group, IL-10 and the mRNA and protein expression of Notch-1 were the opposite. CONCLUSION miR-34a regulating Notch-1/NF-κB signaling pathway can reduce the HUVEC damage caused by LPS stimulation.
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Affiliation(s)
- Yun Ge
- Department of General Intensive Care Unit, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Man Huang
- Department of General Intensive Care Unit, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Yue-Feng Ma
- Department of General Intensive Care Unit, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
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Wang X, Sun B, Mbondji C, Biswas S, Zhao J, Hewlett I. Differences in Activation of HIV-1 Replication by Superinfection With HIV-1 and HIV-2 in U1 Cells. J Cell Physiol 2016; 232:1746-1753. [PMID: 27662631 DOI: 10.1002/jcp.25614] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/22/2016] [Indexed: 11/09/2022]
Abstract
Macrophages contribute to HIV-1 pathogenesis by forming a viral reservoir that serve as a viral source for the infection of CD4 T cells. The relationship between HIV-1 latent infection and superinfection in macrophages has not been well studied. Using susceptible U1 cells chronically infected with HIV-1, we studied the effects of HIV superinfection on latency and differences in superinfection with HIV-1 and HIV-2 in macrophages. We found that HIV-1 (MN) superinfection displayed increased HIV-1 replication in a time-dependent manner; while cells infected with HIV-2 (Rod) initially showed increased HIV-1 replication, followed by a decrease in HIV-1 RNA production. HIV-1 superinfection upregulated/activated NF-ĸB, NFAT, AP-1, SP-1, and MAPK Erk through expression/activation of molecules, CD4, CD3, TCRβ, Zap-70, PLCγ1, and PKCΘ in T cell receptor-related signaling pathways; while HIV-2 superinfection initially increased expression/activation of these molecules followed by decreased protein expression/activation. HIV superinfection initially downregulated HDAC1 and upregulated acetyl-histone H3 and histone H3 (K4), while HIV-2 superinfection demonstrated an increase in HDAC1 and a decrease in acetyl-histone H3 and histone H3 (K4) relative to HIV-1 superinfection. U1 cells superinfected with HIV-1 or HIV-2 showed differential expression of proteins, IL-2, PARP-1, YB-1, and LysRS. These findings indicate that superinfection with HIV-1 or HIV-2 has different effects on reactivation of HIV-1 replication. HIV-1 superinfection with high load of viral replication may result in high levels of cytotoxicity relative to HIV-2 superinfection. Cells infected with HIV-2 showed lower level of HIV-1 replication, suggesting that co-infection with HIV-2 may result in slower progression toward AIDS. J. Cell. Physiol. 232: 1746-1753, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Xue Wang
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Bing Sun
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Christelle Mbondji
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Santanu Biswas
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Jiangqin Zhao
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Indira Hewlett
- Laboratory of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
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30
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Housley WJ, Fernandez SD, Vera K, Murikinati SR, Grutzendler J, Cuerdon N, Glick L, De Jager PL, Mitrovic M, Cotsapas C, Hafler DA. Genetic variants associated with autoimmunity drive NFκB signaling and responses to inflammatory stimuli. Sci Transl Med 2016; 7:291ra93. [PMID: 26062845 DOI: 10.1126/scitranslmed.aaa9223] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The transcription factor nuclear factor κB (NFκB) is a central regulator of inflammation, and genome-wide association studies in subjects with autoimmune disease have identified a number of variants within the NFκB signaling cascade. In addition, causal variant fine-mapping has demonstrated that autoimmune disease susceptibility variants for multiple sclerosis (MS) and ulcerative colitis are strongly enriched within binding sites for NFκB. We report that MS-associated variants proximal to NFκB1 and in an intron of TNFRSF1A (TNFR1) are associated with increased NFκB signaling after tumor necrosis factor-α (TNFα) stimulation. Both variants result in increased degradation of inhibitor of NFκB α (IκBα), a negative regulator of NFκB, and nuclear translocation of p65 NFκB. The variant proximal to NFκB1 controls signaling responses by altering the expression of NFκB itself, with the GG risk genotype expressing 20-fold more p50 NFκB and diminished expression of the negative regulators of the NFκB pathway: TNFα-induced protein 3 (TNFAIP3), B cell leukemia 3 (BCL3), and cellular inhibitor of apoptosis 1 (CIAP1). Finally, naïve CD4 T cells from patients with MS express enhanced activation of p65 NFκB. These results demonstrate that genetic variants associated with risk of developing MS alter NFκB signaling pathways, resulting in enhanced NFκB activation and greater responsiveness to inflammatory stimuli. As such, this suggests that rapid genetic screening for variants associated with NFκB signaling may identify individuals amenable to NFκB or cytokine blockade.
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Affiliation(s)
- William J Housley
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Salvador D Fernandez
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Kenneth Vera
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Sasidhar R Murikinati
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Jaime Grutzendler
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Nicole Cuerdon
- Program in Translational NeuroPsychiatric Genomics, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Laura Glick
- Program in Translational NeuroPsychiatric Genomics, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Phillip L De Jager
- Program in Translational NeuroPsychiatric Genomics, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA. Broad Institute of Harvard University and Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Mitja Mitrovic
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA
| | - Chris Cotsapas
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA. Broad Institute of Harvard University and Massachusetts Institute of Technology, Cambridge, MA 02142, USA. Department of Genetics, Yale School of Medicine, New Haven, CT 06511, USA
| | - David A Hafler
- Department of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT 06511, USA. Broad Institute of Harvard University and Massachusetts Institute of Technology, Cambridge, MA 02142, USA.
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31
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Wang X, Tan J, Biswas S, Zhao J, Devadas K, Ye Z, Hewlett I. Pandemic Influenza A (H1N1) Virus Infection Increases Apoptosis and HIV-1 Replication in HIV-1 Infected Jurkat Cells. Viruses 2016; 8:E33. [PMID: 26848681 PMCID: PMC4776188 DOI: 10.3390/v8020033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 01/12/2016] [Accepted: 01/15/2016] [Indexed: 02/07/2023] Open
Abstract
Influenza virus infection has a significant impact on public health, since it is a major cause of morbidity and mortality. It is not well-known whether influenza virus infection affects cell death and human immunodeficiency virus (HIV)-1 replication in HIV-1-infected patients. Using a lymphoma cell line, Jurkat, we examined the in vitro effects of pandemic influenza A (H1N1) virus (pH1N1) infection on cell death and HIV-1 RNA production in infected cells. We found that pH1N1 infection increased apoptotic cell death through Fas and Bax-mediated pathways in HIV-1-infected Jurkat cells. Infection with pH1N1 virus could promote HIV-1 RNA production by activating host transcription factors including nuclear factor kappa-light-chain-enhancer of activated B cells (NF-ĸB), nuclear factor of activated T-cells (NFAT) and activator protein 1 (AP-1) through mitogen-activated protein kinases (MAPK) pathways and T-cell antigen receptor (TCR)-related pathways. The replication of HIV-1 latent infection could be reactivated by pH1N1 infection through TCR and apoptotic pathways. These data indicate that HIV-1 replication can be activated by pH1N1 virus in HIV-1-infected cells resulting in induction of cell death through apoptotic pathways.
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Affiliation(s)
- Xue Wang
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Jiying Tan
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Santanu Biswas
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Jiangqin Zhao
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Krishnakumar Devadas
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Zhiping Ye
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA.
| | - Indira Hewlett
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, CBER/FDA, Building 72, Rm 4322, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
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32
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Phan AT, Goldrath AW. Hypoxia-inducible factors regulate T cell metabolism and function. Mol Immunol 2015; 68:527-35. [PMID: 26298577 PMCID: PMC4679538 DOI: 10.1016/j.molimm.2015.08.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/15/2015] [Accepted: 08/05/2015] [Indexed: 02/06/2023]
Abstract
Resolution of infection requires the coordinated response of heterogeneous cell types to a range of physiological and pathological signals to regulate their proliferation, migration, differentiation, and effector functions. One mechanism by which immune cells integrate these signals is through modulating metabolic activity. A well-studied regulator of cellular metabolism is the hypoxia-inducible factor (HIF) family, the highly conserved central regulators of adaptation to limiting oxygen tension. HIF's regulation of cellular metabolism and a variety of effector, signaling, and trafficking molecules has made these transcription factors a recent topic of interest in T cell biology. Low oxygen availability, or hypoxia, increases expression and stabilization of HIF in immune cells, activating molecular programs both unique and common among cell types, including glycolytic metabolism. Notably, numerous oxygen-independent signals, many of which are active in T cells, also result in enhanced HIF activity. Here, we discuss both oxygen-dependent and -independent regulation of HIF activity in T cells and the resulting impacts on metabolism, differentiation, function, and immunity.
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Affiliation(s)
- Anthony T Phan
- Division of Biological Sciences, Molecular Biology Section, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
| | - Ananda W Goldrath
- Division of Biological Sciences, Molecular Biology Section, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
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33
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D'Ignazio L, Bandarra D, Rocha S. NF-κB and HIF crosstalk in immune responses. FEBS J 2015; 283:413-24. [PMID: 26513405 PMCID: PMC4864946 DOI: 10.1111/febs.13578] [Citation(s) in RCA: 226] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 12/18/2022]
Abstract
Hypoxia and inflammation have been associated with a number of pathological conditions, in particular inflammatory diseases. While hypoxia is mainly associated with the activation of hypoxia‐inducible factors (HIFs), inflammation activates the family of transcription factor called nuclear factor‐kappa B (NF‐κB). An extensive crosstalk between these two main molecular players involved in hypoxia and inflammation has been demonstrated. This crosstalk includes common activating stimuli, shared regulators and targets. In this review, we discuss the current understanding of the role of NF‐κB and HIF in the context of the immune response. We review the crosstalk between HIF and NF‐κB in the control of the immune response in different immune cell types including macrophages, neutrophils and B and T cells. Furthermore the importance of the molecular crosstalk between HIFs and NF‐κB for a variety of medical conditions will be discussed.
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Affiliation(s)
- Laura D'Ignazio
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, UK
| | - Daniel Bandarra
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, UK
| | - Sonia Rocha
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, UK
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34
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Fernandes MT, Ghezzo MN, Silveira AB, Kalathur RK, Póvoa V, Ribeiro AR, Brandalise SR, Dejardin E, Alves NL, Ghysdael J, Barata JT, Yunes JA, dos Santos NR. Lymphotoxin-β receptor in microenvironmental cells promotes the development of T-cell acute lymphoblastic leukaemia with cortical/mature immunophenotype. Br J Haematol 2015; 171:736-51. [PMID: 26456771 DOI: 10.1111/bjh.13760] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/29/2015] [Indexed: 01/21/2023]
Abstract
Lymphotoxin-mediated activation of the lymphotoxin-β receptor (LTβR; LTBR) has been implicated in cancer, but its role in T-cell acute lymphoblastic leukaemia (T-ALL) has remained elusive. Here we show that the genes encoding lymphotoxin (LT)-α and LTβ (LTA, LTB) are expressed in T-ALL patient samples, mostly of the TAL/LMO molecular subtype, and in the TEL-JAK2 transgenic mouse model of cortical/mature T-ALL (Lta, Ltb). In these mice, expression of Lta and Ltb is elevated in early stage T-ALL. Surface LTα1 β2 protein is expressed in primary mouse T-ALL cells, but only in the absence of microenvironmental LTβR interaction. Indeed, surface LT expression is suppressed in leukaemic cells contacting Ltbr-expressing but not Ltbr-deficient stromal cells, both in vitro and in vivo, thus indicating that dynamic surface LT expression in leukaemic cells depends on interaction with its receptor. Supporting the notion that LT signalling plays a role in T-ALL, inactivation of Ltbr results in a significant delay in TEL-JAK2-induced leukaemia onset. Moreover, young asymptomatic TEL-JAK2;Ltbr(-/-) mice present markedly less leukaemic thymocytes than age-matched TEL-JAK2;Ltbr(+/+) mice and interference with LTβR function at this early stage delayed T-ALL development. We conclude that LT expression by T-ALL cells activates LTβR signalling in thymic stromal cells, thus promoting leukaemogenesis.
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Affiliation(s)
- Mónica T Fernandes
- Centre for Biomedical Research (CBMR), University of Algarve, Faro, Portugal.,Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal
| | - Marinella N Ghezzo
- Centre for Biomedical Research (CBMR), University of Algarve, Faro, Portugal.,Department of Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal
| | | | - Ravi K Kalathur
- Centre for Biomedical Research (CBMR), University of Algarve, Faro, Portugal
| | - Vanda Póvoa
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Ana R Ribeiro
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Thymus Development and Function Laboratory, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Institute for Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | | | - Emmanuel Dejardin
- Laboratory of Molecular Immunology and Signal Transduction, GIGA-Research, University of Liège, Liège, Belgium
| | - Nuno L Alves
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Thymus Development and Function Laboratory, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Jacques Ghysdael
- Institut Curie-Centre de Recherche, Centre Universitaire, Orsay, France.,CNRS UMR3306, Centre Universitaire, Orsay, France.,INSERM U1005, Centre Universitaire, Orsay, France
| | - João T Barata
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - José Andres Yunes
- Centro Infantil Boldrini, Campinas, SP, Brazil.,Department of Paediatrics, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Nuno R dos Santos
- Centre for Biomedical Research (CBMR), University of Algarve, Faro, Portugal
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Abstract
Acid sphingomyelinase (ASM), a lipid hydrolase enzyme, has the potential to modulate various cellular activation responses via the generation of ceramide and by interaction with cellular receptors. We have hypothesized that ASM modulates CD4+ T-cell receptor activation and impacts immune responses. We first observed interactions of ASM with the intracellular domains of both CD3 and CD28. ASM further mediates T-cell proliferation after anti-CD3/CD28 antibody stimulation and alters CD4+ T-cell activation signals by generating ceramide. We noted that various pharmacological inhibitors of ASM or knockdown of ASM using small hairpin RNA inhibit CD3/CD28-mediated CD4+ T-cell proliferation and activation. Furthermore, such blockade of ASM bioactivity by biochemical inhibitors and/or molecular-targeted knockdown of ASM broadly abrogate T-helper cell responses. In conclusion, we detail immune, pivotal roles of ASM in adaptive immune T-cell responses, and propose that these pathways might provide novel targets for the therapy of autoimmune and inflammatory diseases.
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36
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Furmanski AL, Barbarulo A, Solanki A, Lau CI, Sahni H, Saldana JI, D'Acquisto F, Crompton T. The transcriptional activator Gli2 modulates T-cell receptor signalling through attenuation of AP-1 and NFκB activity. J Cell Sci 2015; 128:2085-95. [PMID: 25908851 PMCID: PMC4450292 DOI: 10.1242/jcs.165803] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/30/2015] [Indexed: 01/20/2023] Open
Abstract
Different tissues contain diverse and dynamic cellular niches, providing distinct signals to tissue-resident or migratory infiltrating immune cells. Hedgehog (Hh) proteins are secreted inter-cellular signalling molecules, which are essential during development and are important in cancer, post-natal tissue homeostasis and repair. Hh signalling mediated by the Hh-responsive transcription factor Gli2 also has multiple roles in T-lymphocyte development and differentiation. Here, we investigate the function of Gli2 in T-cell signalling and activation. Gene transcription driven by the Gli2 transcriptional activator isoform (Gli2A) attenuated T-cell activation and proliferation following T-cell receptor (TCR) stimulation. Expression of Gli2A in T-cells altered gene expression profiles, impaired the TCR-induced Ca2+ flux and nuclear expression of NFAT2, suppressed upregulation of molecules essential for activation, and attenuated signalling pathways upstream of the AP-1 and NFκB complexes, leading to reduced activation of these important transcription factors. Inhibition of physiological Hh-dependent transcription increased NFκB activity upon TCR ligation. These data are important for understanding the molecular mechanisms of immunomodulation, particularly in tissues where Hh proteins or other Gli-activating ligands such as TGFβ are upregulated, including during inflammation, tissue damage and repair, and in tumour microenvironments.
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Affiliation(s)
- Anna L Furmanski
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alessandro Barbarulo
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Anisha Solanki
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Ching-In Lau
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Hemant Sahni
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Jose Ignacio Saldana
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Fulvio D'Acquisto
- Centre for Biochemical Pharmacology, William Harvey Research Institute, QMUL, London EC1M 6BQ, UK
| | - Tessa Crompton
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
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37
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SUMO2 overexpression enhances the generation and function of interleukin-17-producing CD8⁺ T cells in mice. Cell Signal 2015; 27:1246-52. [PMID: 25762490 DOI: 10.1016/j.cellsig.2015.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/03/2015] [Accepted: 03/03/2015] [Indexed: 12/12/2022]
Abstract
Small ubiquitin-like modifier (SUMO) 2 is a small protein that controls the activity and stability of other proteins by SUMOylation. In this study, T cell-specific SUMO2 overexpressing transgenic mice were generated to study the effect of SUMO2 on T lymphocytes. SUMO2 overexpression promoted differentiation of interleukin (IL)-17-producing CD8(+) T cells, and significantly suppressed the growth of EL4 tumor cells in vivo. Moreover, the tumor tissue from SUMO2-overexpressing mice had higher interferon (IFN)-γ and granzyme B mRNA levels. Although SUMO2 overexpression did not increase IFN-γ or granzyme B production in cytotoxic T lymphocytes, IL-12 treatment restored and increased IFN-γ secretion in IL-17-producing CD8(+) T cells. SUMO2 overexpression also increased gene expression of chemokines, CCL4, and CXCL10, which attract cytotoxic T lymphocytes to tumor tissues. Additionally, SUMO2-overexpressing T cells exhibited increased STAT3 phosphorylation, implying a SUMO2 target which up-regulates STAT3 activity governing IL-17A-producing CD8(+) T cell differentiation and antitumor immune responses.
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38
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Thaker YR, Schneider H, Rudd CE. TCR and CD28 activate the transcription factor NF-κB in T-cells via distinct adaptor signaling complexes. Immunol Lett 2014; 163:113-9. [PMID: 25455592 PMCID: PMC4286576 DOI: 10.1016/j.imlet.2014.10.020] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 07/28/2014] [Accepted: 10/15/2014] [Indexed: 01/07/2023]
Abstract
CD28 and TCR receptors use independent pathways to regulate NF-κB activation in T-cells. CD28 mediated NF-κB activation is dependent on the YMN-FM site for GRB-2 adaptor binding. The adaptors ADAP and SKAP1 are dispensable for direct CD28 activation of NF-κB. TCR driven NF-κB activation requires adaptor ADAP expression.
The transcription factor NF-κB is needed for the induction of inflammatory responses in T-cells. Whether its activation by the antigen-receptor and CD28 is mediated by the same or different intracellular signaling pathways has been unclear. Here, using T-cells from various knock-out (Cd28−/−, adap−/−) and knock-in (i.e. Cd28 Y-170F) mice in conjunction with transfected Jurkat T-cells, we show that the TCR and CD28 use distinct pathways to activate NF-κB in T-cells. Anti-CD28 ligation alone activated NF-κB in primary and Jurkat T-cells as measured by NF-κB reporter and EMSA assays. Anti-CD28 also activated NF-κB normally in primary T-cells from adap−/− mice, while anti-CD3 stimulation required the adaptor ADAP. Over-expression of ADAP or its binding partner SKAP1 failed to enhance anti-CD28 activation of NF-κB, while ADAP greatly increased anti-CD3 induced NF-κB activity. By contrast, CD28 activation of NF-κB depended on GRB-2 binding to CD28 as seen in CD28 deficient Jurkat T-cells reconstituted with the CD28 YMN-FM mutant, and in primary T-cells from CD28 Y170F mutant knock-in mice. CD28 associated with GRB-2, and GRB-2 siRNA impaired CD28 NF-κB activation. GRB-2 binding partner and guanine nucleotide exchange factor, VAV1, greatly enhanced anti-CD28 driven activation of NF-κB. Further, unlike in the case of anti-CD28, NF-κB activation by anti-CD3 and its cooperation with ADAP was strictly dependent on LAT expression. Overall, we provide evidence that CD28 and the TCR complex regulate NF-κB via different signaling modules of GRB-2/VAV1 and LAT/ADAP pathways respectively.
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Affiliation(s)
- Youg Raj Thaker
- Cell Signalling Section, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom.
| | - Helga Schneider
- Cell Signalling Section, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom
| | - Christopher E Rudd
- Cell Signalling Section, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom
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39
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Ji X, Zhang L, Peng J, Hou M. T cell immune abnormalities in immune thrombocytopenia. J Hematol Oncol 2014; 7:72. [PMID: 25274611 PMCID: PMC4189678 DOI: 10.1186/s13045-014-0072-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 09/22/2014] [Indexed: 01/24/2023] Open
Abstract
Immune thrombocytopenia is an autoimmune disease with abnormal T cell immunity. Cytotoxic T cells, abnormal T regulatory cells, helper T cell imbalance, megakaryocyte maturation abnormalities and abnormal T cell anergy are involved in the pathogenesis of this condition. The loss of T cell-mediated immune tolerance to platelet auto-antigens plays a crucial role in immune thrombocytopenia. The induction of T cell tolerance is an important mechanism by which the pathogenesis and treatment of immune thrombocytopenia can be studied. Studies regarding the roles of the new inducible costimulator signal transduction pathway, the ubiquitin proteasome pathway, and the nuclear factor kappa B signal transduction pathway in the induction of T cell tolerance can help improve our understanding of immune theory and may provide a new theoretical basis for studying the pathogenesis and treatment of immune thrombocytopenia.
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Affiliation(s)
- Xuebin Ji
- Department of Hematology, Qilu Hospital of Shandong University, 107 West Wenhua Rd, Jinan, Shandong, 250012, People's Republic of China.
| | - Liping Zhang
- Jinan Stomatological Hospital, Jinan, People's Republic of China.
| | - Jun Peng
- Department of Hematology, Qilu Hospital of Shandong University, 107 West Wenhua Rd, Jinan, Shandong, 250012, People's Republic of China.
| | - Ming Hou
- Department of Hematology, Qilu Hospital of Shandong University, 107 West Wenhua Rd, Jinan, Shandong, 250012, People's Republic of China.
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40
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Whitman E, Barber A. NKG2D receptor activation of NF-κB enhances inflammatory cytokine production in murine effector CD8(+) T cells. Mol Immunol 2014; 63:268-78. [PMID: 25089028 DOI: 10.1016/j.molimm.2014.07.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 01/03/2023]
Abstract
To induce strong immune responses, naïve CD8(+) T cells require stimulation through the TCR and costimulatory receptors. However, the biological effect of activating costimulatory receptors on effector T cells is still unclear. One costimulatory receptor that is likely to be engaged at the target site is NKG2D. This activating receptor is expressed on human and murine CD8(+) T cells with its ligands expressed on the majority of tumor cells and during some infections. In order to determine how activation of costimulatory receptors alters effector CD8(+) T cell functions, this study compared the activation of the NF-κB signaling pathway by two costimulatory receptors, CD28 and NKG2D. Compared to CD28 costimulation, activation of murine effector CD8(+) T cells through CD3 and NKG2D receptors enhanced activation of NF-κB as shown by increased phosphorylation of IKKα, IκBα, and NF-κB and IκBα degradation. NKG2D costimulation also increased activation, nuclear translocation, and DNA binding of NF-κB p65/p50 dimers. Activation of the NF-κB pathway also lead to increased gene expression and secretion of pro-inflammatory cytokines, including IFNα and IFNγ, and decreased gene expression and secretion of anti-inflammatory cytokines, including IL-10 and CCL2. Altered NF-κB activation also increased expression of the effector molecules TNFα, lymphotoxins α and β, and Fas ligand, and increased tumor cell killing through FasL. These data show that compared to CD28 costimulation, activation through the NKG2D receptor leads to the differential activation of the NF-κB signaling pathway and potentially enhances the anti-tumor and anti-viral functions of effector CD8(+) T cells.
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Affiliation(s)
- Emily Whitman
- Department of Biological and Environmental Sciences, Longwood University, Chichester Science Center 305A, 201 High Street, Farmville, VA 23909, USA
| | - Amorette Barber
- Department of Biological and Environmental Sciences, Longwood University, Chichester Science Center 305A, 201 High Street, Farmville, VA 23909, USA.
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41
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Some findings of FADD knockdown in inhibition of HIV-1 replication in Jurkat cells and PBMCs. Mol Cell Biochem 2014; 393:181-90. [PMID: 24752353 DOI: 10.1007/s11010-014-2058-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/03/2014] [Indexed: 10/25/2022]
Abstract
Fas-associated protein with death domain (FADD) is a key adaptor molecule transmitting the death signal mediated by death receptors, and it is also required for T cell proliferation. A recent study indicated that FADD is able to affect HIV-1 production, but the mechanism is not known. Using the susceptible Jurkat cell line and peripheral blood mononuclear cells, we studied the effects of FADD on HIV-1 production. TaqMan RT-PCR was used to quantify HIV-1 viral RNA copies, and Western blot analysis was used to detect protein expression. FADD knockdown decreased HIV-1 replication and inactivated caspase-3 activity in the cells and blocked CD4 translocation to the lipid rafts of the plasma membrane. Reduced expression of FADD suppressed TCR signaling through downregulation of TCR, CD3, and Zap-70 in response to HIV-1 infection and blocked the trafficking of TCR, CD3, CD28, and Zap-70 to lipid rafts, leading to reduced activation of NF-κB and NFAT, which are required for HIV-1 replication. FADD knockdown diminished caspase-8 migration to lipid rafts and its expression in response to HIV-1 infection. These results indicate that FADD, as a host pro-apoptotic protein, plays important roles in regulating HIV-1 replication and production in several ways, and apoptotic pathway inhibition is able to decrease HIV-1 replication and production.
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42
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Gerondakis S, Fulford TS, Messina NL, Grumont RJ. NF-κB control of T cell development. Nat Immunol 2014; 15:15-25. [PMID: 24352326 DOI: 10.1038/ni.2785] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 11/12/2013] [Indexed: 12/12/2022]
Abstract
The NF-κB signal transduction pathway is best known as a major regulator of innate and adaptive immune responses, yet there is a growing appreciation of its importance in immune cell development, particularly of T lineage cells. In this Review, we discuss how the temporal regulation of NF-κB controls the stepwise differentiation and antigen-dependent selection of conventional and specialized subsets of T cells in response to T cell receptor and costimulatory, cytokine and growth factor signals.
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Affiliation(s)
- Steve Gerondakis
- The Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University Central Clinical School, Melbourne, Victoria, Australia
| | - Thomas S Fulford
- The Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University Central Clinical School, Melbourne, Victoria, Australia
| | - Nicole L Messina
- The Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University Central Clinical School, Melbourne, Victoria, Australia
| | - Raelene J Grumont
- The Australian Centre for Blood Diseases and Department of Clinical Hematology, Monash University Central Clinical School, Melbourne, Victoria, Australia
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Abstract
Caspase recruitment domain-containing membrane-associated guanylate kinase protein-1 (CARMA1), a member of the membrane associated guanylate kinase (MAGUK) family of kinases, is essential for T lymphocyte activation and proliferation via T-cell receptor (TCR) mediated NF-κB activation. Recent studies suggest a broader role for CARMA1 regulating other T-cell functions as well as a role in non-TCR-mediated signaling pathways important for lymphocyte development and functions. In addition, CARMA1 has been shown to be an important component in the pathogenesis of several human diseases. Thus, comprehensively defining its mechanisms of action and regulation could reveal novel therapeutic targets for T-cell-mediated diseases and lymphoproliferative disorders.
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Affiliation(s)
- Marly I Roche
- Pulmonary and Critical Care Unit and the Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
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Genome-wide association study combining pathway analysis for typical sporadic amyotrophic lateral sclerosis in Chinese Han populations. Neurobiol Aging 2014; 35:1778.e9-1778.e23. [PMID: 24529757 DOI: 10.1016/j.neurobiolaging.2014.01.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 12/20/2013] [Accepted: 01/12/2014] [Indexed: 01/06/2023]
Abstract
Sporadic amyotrophic lateral sclerosis (sALS) is a severe neurodegenerative disease that causes progressive motor neuron death. Although the etiology of sALS remains unknown, genetic variants are thought to predispose individuals to the disease. Several recent genome-wide association studies have identified a number of loci that increase sALS susceptibility, but these only explain a small proportion of the disease. To extend the current genetic evidence and to identify novel candidates of sALS, we performed a pooling genome-wide association study by 859,311 autosomal single-nucleotide polymorphisms of IlluminaHumanOmniZhongHua-8 combining pathway analysis in 250 typical sALS cases precluding age, clinical course, and phenotype interference and 250 control subjects from Chinese Han populations (CHP). The results revealed that 8 novel loci of 1p34.3, 3p21.1, 3p22.2, 10p15.2, 22q12.1, 3q13.11, 11q25, 12q24.33, and 5 previously reported loci of CNTN4 (kgp11325216), ATXN1 (kgp8327591), C9orf72 (kgp6016770), ITPR2 (kgp3041552), and SOD1 (kgp10760302) were associated with sALS from CHP. Furthermore, the pathway analysis based on the Gene Set Analysis Toolkit V2 showed that 10 top pathways were strongly associated with sALS from CHP, and among them, the 7 most potentially candidate pathways were phosphatidylinositol signaling system, Wnt signaling pathway, axon guidance, MAPK signaling pathway, neurotrophin signaling pathway, arachidonic acid metabolism, and T-cell receptor signaling pathway, a total of 39 significantly associate genes in 7 candidate pathways was suggested to involve in the pathogenesis of sALS from CHP. In conclusion, our results revealed several new loci and pathways related to sALS from CHP and extend the association evidence for partial loci, genes, and pathways, which were previously identified in other populations. Thus, our data provided new clues for exploring the pathogenesis of sALS.
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Le Page A, Fortin C, Garneau H, Allard N, Tsvetkova K, Tan CTY, Larbi A, Dupuis G, Fülöp T. Downregulation of inhibitory SRC homology 2 domain-containing phosphatase-1 (SHP-1) leads to recovery of T cell responses in elderly. Cell Commun Signal 2014; 12:2. [PMID: 24405902 PMCID: PMC3896791 DOI: 10.1186/1478-811x-12-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 01/04/2014] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Immune responses are generally impaired in aged mammals. T cells have been extensively studied in this context due to the initial discovery of their reduced proliferative capacity with aging. The decreased responses involve altered signaling events associated with the early steps of T cell activation. The underlying causes of these changes are not fully understood but point to alterations in assembly of the machinery for T cell activation. Here, we have tested the hypothesis that the T cell pool in elderly subjects displayed reduced functional capacities due to altered negative feedback mechanisms that participate in the regulation of the early steps of T cell activation. Such conditions tip the immune balance in favor of altered T cell activation and a related decreased response in aging. RESULTS We present evidence that the tyrosine phosphatase SHP-1, a key regulator of T cell signal transduction machinery is, at least in part, responsible for the impaired T cell activation in aging. We used tyrosine-specific mAbs and Western blot analysis to show that a deregulation of the Csk/PAG loop in activated T cells from elderly individuals favored the inactive form of tyrosine-phosphorylated Lck (Y505). Confocal microscopy analysis revealed that the dynamic movements of these regulatory proteins in lipid raft microdomains was altered in T cells of aged individuals. Enzymic assays showed that SHP-1 activity was upregulated in T cells of aged donors, in contrast to young subjects. Pharmacological inhibition of SHP-1 resulted in recovery of TCR/CD28-dependent lymphocyte proliferation and IL-2 production of aged individuals to levels approaching those of young donors. Significant differences in the active (Y394) and inactive (Y505) phosphorylation sites of Lck in response to T cell activation were observed in elderly donors as compared to young subjects, independently of CD45 isoform expression. CONCLUSIONS Our data suggest that the role of SHP-1 in T cell activation extends to its increased effect in negative feedback in aging. Modulation of SHP-1 activity could be a target to restore altered T cell functions in aging. These observations could have far reaching consequences for improvement of immunosenescence and its clinical consequences such as infections, altered response to vaccination.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Tamas Fülöp
- Research Center on Aging, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 1036 rue Belvedere sud, Sherbrooke, J1H 4C4, Quebec, Canada.
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Schmidt AM, Zou T, Joshi RP, Leichner TM, Pimentel MA, Sommers CL, Kambayashi T. Diacylglycerol kinase ζ limits the generation of natural regulatory T cells. Sci Signal 2013; 6:ra101. [PMID: 24280042 DOI: 10.1126/scisignal.2004411] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Natural regulatory T (nT(reg)) cells are important for maintaining tolerance to self- and foreign antigens, and they are thought to develop from thymocytes that receive strong T cell receptor (TCR)-mediated signals in the thymus. TCR engagement leads to the activation of phospholipase C-γ1, which generates the lipid second messenger diacylglycerol (DAG) from phosphatidylinositol 4,5-bisphosphate. We used mice that lack the ζ isoform of DAG kinase (DGKζ), which metabolizes DAG to terminate its signaling, to enhance TCR-mediated signaling and identify critical signaling events in nT(reg) cell development. Loss of DGKζ resulted in increased numbers of thymic CD25(+)Foxp3(-)CD4(+) nT(reg) cell precursors and Foxp3(+)CD4(+) nT(reg) cells in a cell-autonomous manner. DGKζ-deficient T cells exhibited increased nuclear translocation of the nuclear factor κB subunit c-Rel, as well as enhanced extracellular signal-regulated kinase (ERK) phosphorylation in response to TCR stimulation, suggesting that these downstream pathways may contribute to nT(reg) cell development. Indeed, reducing c-Rel abundance or blocking ERK phosphorylation abrogated the increased generation of nTreg cells by DGKζ-deficient thymocytes. The extent of ERK phosphorylation correlated with TCR-mediated acquisition of Foxp3 in immature thymocytes in vitro. Furthermore, the development of nT(reg) cells was augmented in mice in which ERK activation was selectively enhanced in T cells. Together, these data suggest that DGKζ regulates the development of nT(reg) cells by limiting the extent of activation of the ERK and c-Rel signaling pathways.
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Affiliation(s)
- Amanda M Schmidt
- 1Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 10194, USA
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47
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Gene expression profiling in preterm infants: new aspects of bronchopulmonary dysplasia development. PLoS One 2013; 8:e78585. [PMID: 24194948 PMCID: PMC3806835 DOI: 10.1371/journal.pone.0078585] [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: 12/07/2011] [Accepted: 09/23/2013] [Indexed: 11/22/2022] Open
Abstract
Rationale Bronchopulmonary dysplasia is one of the most serious complications observed in premature infants. Thanks to microarray technique, expression of nearly all human genes can be reliably evaluated. Objective To compare whole genome expression in the first month of life in groups of infants with and without bronchopulmonary dysplasia. Methods 111 newborns were included in the study. The mean birth weight was 1029g (SD:290), and the mean gestational age was 27.8 weeks (SD:2.5). Blood samples were drawn from the study participants on the 5th, 14th and 28th day of life. The mRNA samples were evaluated for gene expression with the use of GeneChip® Human Gene 1.0 ST microarrays. The infants were divided into two groups: bronchopulmonary dysplasia (n=68) and control (n=43). Results Overall 2086 genes were differentially expressed on the day 5, only 324 on the day 14 and 3498 on the day 28. Based on pathway enrichment analysis we found that the cell cycle pathway was up-regulated in the bronchopulmonary dysplasia group. The activation of this pathway does not seem to be related with the maturity of the infant. Four pathways related to inflammatory response were continuously on the 5th, 14th and 28th day of life down-regulated in the bronchopulmonary dysplasia group. However, the expression of genes depended on both factors: immaturity and disease severity. The most significantly down-regulated pathway was the T cell receptor signaling pathway. Conclusion The results of the whole genome expression study revealed alteration of the expression of nearly 10% of the genome in bronchopulmonary dysplasia patients.
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48
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van Vliet SJ, Vuist IM, Lenos K, Tefsen B, Kalay H, García-Vallejo JJ, van Kooyk Y. Human T cell activation results in extracellular signal-regulated kinase (ERK)-calcineurin-dependent exposure of Tn antigen on the cell surface and binding of the macrophage galactose-type lectin (MGL). J Biol Chem 2013; 288:27519-27532. [PMID: 23918927 DOI: 10.1074/jbc.m113.471045] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The C-type lectin macrophage galactose-type lectin (MGL) exerts an immunosuppressive role reflected by its interaction with terminal GalNAc moieties, such as the Tn antigen, on CD45 of effector T cells, thereby down-regulating T cell receptor signaling, cytokine responses, and induction of T cell death. Here, we provide evidence for the pathways that control the specific expression of GalNAc moieties on human CD4(+) T cells. GalNAc epitopes were readily detectable on the cell surface after T cell activation and required de novo protein synthesis. Expression of GalNAc-containing MGL ligands was completely dependent on PKC and did not involve NF-κB. Instead, activation of the downstream ERK MAPK pathway led to decreased mRNA levels and activity of the core 1 β3GalT enzyme and its chaperone Cosmc, favoring the expression of Tn antigen. In conclusion, expression of GalNAc moieties mirrors the T cell activation status, and thus only highly stimulated T cells are prone to the suppressive action of MGL.
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Affiliation(s)
- Sandra J van Vliet
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands.
| | - Ilona M Vuist
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
| | - Kristiaan Lenos
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
| | - Boris Tefsen
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
| | - Hakan Kalay
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
| | - Juan J García-Vallejo
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, 1081 BT Amsterdam, The Netherlands
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49
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Liu C, Jin R, Wang HC, Tang H, Liu YF, Qian XP, Sun XY, Ge Q, Sun XH, Zhang Y. Id1 expression promotes peripheral CD4+ T cell proliferation and survival upon TCR activation without co-stimulation. Biochem Biophys Res Commun 2013; 436:47-52. [PMID: 23707719 DOI: 10.1016/j.bbrc.2013.05.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 05/05/2013] [Indexed: 01/10/2023]
Abstract
Although the role of E proteins in the thymocyte development is well documented, much less is known about their function in peripheral T cells. Here we demonstrated that CD4 promoter-driven transgenic expression of Id1, a naturally occurring dominant-negative inhibitor of E proteins, can substitute for the co-stimulatory signal delivered by CD28 to facilitate the proliferation and survival of naïve CD4+ cells upon anti-CD3 stimulation. We next discovered that IL-2 production and NF-κB activity after anti-CD3 stimulation were significantly elevated in Id1-expressing cells, which may be, at least in part, responsible for the augmentation of their proliferation and survival. Taken together, results from this study suggest an important role of E and Id proteins in peripheral T cell activation. The ability of Id proteins to by-pass co-stimulatory signals to enable T cell activation has significant implications in regulating T cell immunity.
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Affiliation(s)
- Chen Liu
- Department of Immunology, Peking University Health Science Center, Beijing, China
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