51
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Chen T, Li Q, Zhang X, Long R, Wu Y, Wu J, Fu X. TOX expression decreases with progression of colorectal cancers and is associated with CD4 T-cell density and Fusobacterium nucleatum infection. Hum Pathol 2018; 79:93-101. [PMID: 29792893 DOI: 10.1016/j.humpath.2018.05.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/01/2018] [Accepted: 05/11/2018] [Indexed: 12/22/2022]
Abstract
Fusobacterium nucleatum in the tumor microenvironment plays an important role in the development of colorectal cancer. The underlying mechanism of action, however, remains to be elucidated. We evaluated the relation of F nucleatum amount to thymocyte selection-associated high-mobility group box (TOX) protein expression and CD4+ T-cell density in 138 human colorectal tissues. TOX expression and CD4+ T-cell density in Fnucleatum-negative tissues were significantly higher compared to those in Fnucleatum-positive tissues (P < .001 and P = .002, respectively). We found a negative correlation between F nucleatum abundance and TOX expression (P < .001) and CD4+ T-cell density (P < .001). TOX expression in normal mucosa, hyperplastic polyps, and adenomas was significantly higher than in sessile serrated adenomas and different stages of carcinomas (P < .05). Moreover, CD4+ T-cell density in high-TOX expression tissues was significantly higher than in low-TOX expression tissues (P = .003). A positive correlation was found between TOX expression and CD4+ T-cell density in colorectal tissues (Spearman correlation coefficient: 0.362, 95% confidence interval: 0.051-0.641, P = .022). Our findings suggest that F nucleatum may suppress antitumor immune responses by decreasing CD4+ T-cell density and TOX expression in the progression of colorectal cancer.
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Affiliation(s)
- Ting Chen
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Qing Li
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Xiaoyan Zhang
- Department of Dermatology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Ran Long
- Department of Medical Imaging, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Yaxin Wu
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Jiao Wu
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000
| | - Xiangsheng Fu
- Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Sichuan, China 646000; Department of Gastroenterology, the Affiliated Hospital of North Sichuan Medical College, Sichuan, China 637000.
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52
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NickAria S, Haghpanah S, Ramzi M, Karimi M. Relationship of the Interaction Between Two Quantitative Trait Loci with γ-Globin Expression in β-Thalassemia Intermedia Patients. Hemoglobin 2018; 42:108-112. [PMID: 29745274 DOI: 10.1080/03630269.2018.1463915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Globin switching is a significant factor on blood hemoglobin (Hb) level but its molecular mechanisms have not yet been identified, however, several quantitative trait loci (QTL) and polymorphisms involved regions on chromosomes 2p, 6q, 8q and X account for variation in the γ-globin expression level. We studied the effect of interaction between a region on intron six of the TOX gene, chromosome 8q (chr8q) and XmnI locus on the γ-globin promoter, chr11p on γ-globin expression in 150 β-thalassemia intermedia (β-TI) patients, evaluated by statistical interaction analysis. Our results showed a significant interaction between one QTL on intron six of the TOX gene (rs9693712) and XmnI locus that effect γ-globin expression. Interchromosomal interaction mediates through transcriptional machanisms to preserve true genome architectural features, chromosomes localization and DNA bending. This interaction can be a part of the unknown molecular mechanism of globin switching and regulation of gene expression.
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Affiliation(s)
- Shiva NickAria
- a Hematology Research Center , Shiraz University of Medical Sciences , Shiraz , Iran
| | - Sezaneh Haghpanah
- a Hematology Research Center , Shiraz University of Medical Sciences , Shiraz , Iran
| | - Mani Ramzi
- a Hematology Research Center , Shiraz University of Medical Sciences , Shiraz , Iran
| | - Mehran Karimi
- a Hematology Research Center , Shiraz University of Medical Sciences , Shiraz , Iran
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53
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Abel L, Fellay J, Haas DW, Schurr E, Srikrishna G, Urbanowski M, Chaturvedi N, Srinivasan S, Johnson DH, Bishai WR. Genetics of human susceptibility to active and latent tuberculosis: present knowledge and future perspectives. THE LANCET. INFECTIOUS DISEASES 2018; 18:e64-e75. [DOI: 10.1016/s1473-3099(17)30623-0] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 01/18/2017] [Accepted: 01/27/2017] [Indexed: 02/07/2023]
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54
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Das A, Harly C, Yang Q, Bhandoola A. Lineage specification in innate lymphocytes. Cytokine Growth Factor Rev 2018; 42:20-26. [PMID: 29373198 DOI: 10.1016/j.cytogfr.2018.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/11/2018] [Indexed: 01/12/2023]
Abstract
Innate lymphoid cells (ILCs) are immune cells that lack specific antigen receptors but possess similar effector functions as T cells. Concordantly, ILCs express many transcription factors known to be important for T cell effector function. ILCs develop from lymphoid progenitors in fetal liver and adult bone marrow. However, the identification of ILC progenitor (ILCP) and other precursors in peripheral tissues raises the question of whether ILC development might occur at extramedullary sites. We discuss central and local generation in maintaining ILC abundance at peripheral sites.
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Affiliation(s)
- Arundhoti Das
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Christelle Harly
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Qi Yang
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY, 12208, USA
| | - Avinash Bhandoola
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
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55
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Huang Q, Seillet C, Belz GT. Shaping Innate Lymphoid Cell Diversity. Front Immunol 2017; 8:1569. [PMID: 29201028 PMCID: PMC5697340 DOI: 10.3389/fimmu.2017.01569] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/01/2017] [Indexed: 01/12/2023] Open
Abstract
Innate lymphoid cells (ILCs) are a key cell type that are enriched at mucosal surfaces and within tissues. Our understanding of these cells is growing rapidly. Paradoxically, these cells play a role in maintaining tissue integrity but they also function as key drivers of allergy and inflammation. We present here the most recent understanding of how genomics has provided significant insight into how ILCs are generated and the enormous heterogeneity present within the canonical subsets. This has allowed the generation of a detailed blueprint for ILCs to become highly sensitive and adaptive sensors of environmental changes and therefore exquisitely equipped to protect immune surfaces.
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Affiliation(s)
- Qiutong Huang
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia
| | - Cyril Seillet
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia
| | - Gabrielle T Belz
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia
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56
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Abstract
The discovery of tissue-resident innate lymphoid cell populations effecting different forms of type 1, 2, and 3 immunity; tissue repair; and immune regulation has transformed our understanding of mucosal immunity and allergy. The emerging complexity of these populations along with compounding issues of redundancy and plasticity raise intriguing questions about their precise lineage relationship. Here we review advances in mapping the emergence of these lineages from early lymphoid precursors. We discuss the identification of a common innate lymphoid cell precursor characterized by transient expression of the transcription factor PLZF, and the lineage relationships of innate lymphoid cells with conventional natural killer cells and lymphoid tissue inducer cells. We also review the rapidly growing understanding of the network of transcription factors that direct the development of these lineages.
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Affiliation(s)
- Isabel E Ishizuka
- Committee on Immunology, The University of Chicago, Illinois 60637; .,Department of Pathology, The University of Chicago, Illinois 60637
| | - Michael G Constantinides
- Committee on Immunology, The University of Chicago, Illinois 60637; .,Department of Pathology, The University of Chicago, Illinois 60637.,Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892
| | - Herman Gudjonson
- Committee on Immunology, The University of Chicago, Illinois 60637; .,Institute of Biophysical Dynamics, The University of Chicago, Illinois 60637.,Department of Chemistry, The University of Chicago, Illinois 60637
| | - Albert Bendelac
- Committee on Immunology, The University of Chicago, Illinois 60637; .,Department of Pathology, The University of Chicago, Illinois 60637
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57
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Post M, Cuapio A, Osl M, Lehmann D, Resch U, Davies DM, Bilban M, Schlechta B, Eppel W, Nathwani A, Stoiber D, Spanholtz J, Casanova E, Hofer E. The Transcription Factor ZNF683/HOBIT Regulates Human NK-Cell Development. Front Immunol 2017; 8:535. [PMID: 28555134 PMCID: PMC5430038 DOI: 10.3389/fimmu.2017.00535] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/21/2017] [Indexed: 01/18/2023] Open
Abstract
We identified ZNF683/HOBIT as the most highly upregulated transcription factor gene during ex vivo differentiation of human CD34+ cord blood progenitor cells to CD56+ natural killer (NK) cells. ZNF683/HOBIT mRNA was preferentially expressed in NK cells compared to other human peripheral blood lymphocytes and monocytes. During ex vivo differentiation, ZNF683/HOBIT mRNA started to increase shortly after addition of IL-15 and further accumulated in parallel to the generation of CD56+ NK cells. shRNA-mediated knockdown of ZNF683/HOBIT resulted in a substantial reduction of CD56−CD14− NK-cell progenitors and the following generation of CD56+ NK cells was largely abrogated. The few CD56+ NK cells, which escaped the developmental inhibition in the ZNF683/HOBIT knockdown cultures, displayed normal levels of NKG2A and KIR receptors. Functional analyses of these cells showed no differences in degranulation capacity from control cultures. However, the proportion of IFN-γ-producing cells appeared to be increased upon ZNF683/HOBIT knockdown. These results indicate a key role of ZNF683/HOBIT for the differentiation of the human NK-cell lineage and further suggest a potential negative control on IFN-γ production in more mature human NK cells.
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Affiliation(s)
- Mirte Post
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Angelica Cuapio
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Markus Osl
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Dorit Lehmann
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Ulrike Resch
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - David M Davies
- Department of Oncology, University College London Cancer Institute, London, UK
| | - Martin Bilban
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Bernhard Schlechta
- Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Eppel
- Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Amit Nathwani
- Department of Oncology, University College London Cancer Institute, London, UK
| | - Dagmar Stoiber
- Ludwig Boltzmann Institute of Cancer Research, Vienna, Austria.,Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | | | - Emilio Casanova
- Ludwig Boltzmann Institute of Cancer Research, Vienna, Austria.,Institute of Physiology, Center of Physiology and Pharmacology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Erhard Hofer
- Institute of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
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58
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Benoit BM, Jariwala N, O'Connor G, Oetjen LK, Whelan TM, Werth A, Troxel AB, Sicard H, Zhu L, Miller C, Takeshita J, McVicar DW, Kim BS, Rook AH, Wysocka M. CD164 identifies CD4 + T cells highly expressing genes associated with malignancy in Sézary syndrome: the Sézary signature genes, FCRL3, Tox, and miR-214. Arch Dermatol Res 2017; 309:11-19. [PMID: 27766406 PMCID: PMC5357118 DOI: 10.1007/s00403-016-1698-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/26/2016] [Accepted: 10/12/2016] [Indexed: 02/07/2023]
Abstract
Sézary syndrome (SS), a leukemic variant of cutaneous T-cell lymphoma (CTCL), is associated with a significantly shorter life expectancy compared to skin-restricted mycosis fungoides. Early diagnosis of SS is, therefore, key to achieving enhanced therapeutic responses. However, the lack of a biomarker(s) highly specific for malignant CD4+ T cells in SS patients has been a serious obstacle in making an early diagnosis. We recently demonstrated the high expression of CD164 on CD4+ T cells from Sézary syndrome patients with a wide range of circulating tumor burdens. To further characterize CD164 as a potential biomarker for malignant CD4+ T cells, CD164+ and CD164-CD4+ T cells isolated from patients with high-circulating tumor burden, B2 stage, and medium/low tumor burden, B1-B0 stage, were assessed for the expression of genes reported to differentiate SS from normal controls, and associated with malignancy and poor prognosis. The expression of Sézary signature genes: T plastin, GATA-3, along with FCRL3, Tox, and miR-214, was significantly higher, whereas STAT-4 was lower, in CD164+ compared with CD164-CD4+ T cells. While Tox was highly expressed in both B2 and B1-B0 patients, the expression of Sézary signature genes, FCRL3, and miR-214 was associated predominantly with advanced B2 disease. High expression of CD164 mRNA and protein was also detected in skin from CTCL patients. CD164 was co-expressed with KIR3DL2 on circulating CD4+ T cells from high tumor burden SS patients, further providing strong support for CD164 as a disease relevant surface biomarker.
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Affiliation(s)
- Bernice M Benoit
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Neha Jariwala
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Geraldine O'Connor
- National Cancer Institute, Cancer and Inflammation Program, Frederick, MD, USA
| | - Landon K Oetjen
- Division of Dermatology, Department of Medicine, Washington University, St. Louis, MO, USA
- The Division of Biology and Biomedical Sciences, Washington University, St. Louis, MO, USA
| | - Timothy M Whelan
- Division of Dermatology, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Adrienne Werth
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Andrea B Troxel
- Department of Biostatistics and Epidemiology, Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Hélène Sicard
- Innate Pharma, Research and Drug Development, Marseille, France
| | - Lisa Zhu
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Christopher Miller
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Junko Takeshita
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Daniel W McVicar
- National Cancer Institute, Cancer and Inflammation Program, Frederick, MD, USA
| | - Brian S Kim
- Division of Dermatology, Department of Medicine, Washington University, St. Louis, MO, USA
- Department of Anesthesiology, Washington University, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University, St. Louis, MO, USA
- The Division of Biology and Biomedical Sciences, Washington University, St. Louis, MO, USA
| | - Alain H Rook
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA
| | - Maria Wysocka
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd, 1049 BRB, Philadelphia, PA, 19104, USA.
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59
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Abstract
There has been speculation as to how bi-potent CD4(+) CD8(+) double-positive precursor thymocytes choose their distinct developmental fate, becoming either CD4(+) helper or CD8(+) cytotoxic T cells. Based on the clear correlation of αβT cell receptor (TCR) specificity to major histocompatibility complex (MHC) classes with this lineage choice, various studies have attempted to resolve this question by examining the cellular signaling events initiated by TCR engagements, a strategy referred to as a 'top-down' approach. On the other hand, based on the other correlation of CD4/CD8 co-receptor expression with its selected fate, other studies have addressed this question by gradually unraveling the sequential mechanisms that control the phenotypic outcome of this fate decision, a method known as the 'bottom-up' approach. Bridging these two approaches will contribute to a more comprehensive understanding of how TCR signals are coupled with developmental programs in the nucleus. Advances made during the last two decades seemed to make these two approaches more closely linked. For instance, identification of two transcription factors, ThPOK and Runx3, which play central roles in the development of helper and cytotoxic lineages, respectively, provided significant insights into the transcriptional network that controls a CD4/CD8 lineage choice. This review summarizes achievements made using the 'bottom-up' approach, followed by a perspective on future pathways toward coupling TCR signaling with nuclear programs.
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Affiliation(s)
- Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
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60
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Jiang H, Good DJ. A molecular conundrum involving hypothalamic responses to and roles of long non-coding RNAs following food deprivation. Mol Cell Endocrinol 2016; 438:52-60. [PMID: 27555291 PMCID: PMC5116272 DOI: 10.1016/j.mce.2016.08.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 08/16/2016] [Accepted: 08/16/2016] [Indexed: 12/15/2022]
Abstract
Long non-coding RNAs (lncRNAs) are one of most poorly understood RNA classes in the mammalian transcriptome. However, they are emerging as important players in transcriptional regulation, especially within the complexity of the nervous system. This review summarizes the known information about lncRNAs, and their roles in endocrine processes, as well as the lesser-known information about lncRNAs in the brain, and in the neuroendocrine hypothalamus. A "call-to-action" is presented for researchers to use archival transcriptome data to characterize differentially expressed lncRNA species within the hypothalamus. In accordance, we analyze for differential-expression of lncRNA between normal mice and mice with a targeted deletion of the nescient helix-loop-helix 2 gene, and between C57Bl/6 and 129Sv/J mice. Finally, strategies and approaches for researchers to analyze their own datasets or those on the NCBI GEO datasets repository are provided, in hopes that future studies will reveal many new roles for lncRNAs in hypothalamic physiological responses, solving this so-called "molecular conundrum" once and for all.
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Affiliation(s)
- Hao Jiang
- Department of Biochemistry, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Deborah J Good
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA, 24061, USA.
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61
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de Jesus Domingues AM, Artegiani B, Dahl A, Calegari F. Identification of Tox chromatin binding properties and downstream targets by DamID-Seq. GENOMICS DATA 2016; 7:264-8. [PMID: 26981424 PMCID: PMC4778673 DOI: 10.1016/j.gdata.2016.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 02/01/2016] [Accepted: 02/01/2016] [Indexed: 01/29/2023]
Abstract
In recent years, DNA adenine methyltransferase identification (DamID) has emerged as a powerful tool to profile protein-DNA interaction on a genome-wide scale. While DamID has been primarily combined with microarray analyses, which limits the spatial resolution and full potential of this technique, our group was the first to combine DamID with sequencing (DamID-Seq) for characterizing the binding loci and properties of a transcription factor (Tox) (sequencing data available at NCBI's Gene Expression Omnibus under the accession number GSE64240). Our approach was based on the combination and optimization of several bioinformatics tools that are here described in detail. Analysis of Tox proximity to transcriptional start sites, profiling on enhancers and binding motif has allowed us to identify this transcription factor as an important new regulator of neural stem cells differentiation and newborn neurons maturation during mouse cortical development. Here we provide a valuable resource to study the role of Tox as a novel key determinant of mammalian somatic stem cells during development of the nervous and lymphatic system, in which this factor is known to be active, and describe a useful pipeline to perform DamID-Seq analyses for any other transcription factor.
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Affiliation(s)
| | - Benedetta Artegiani
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, Faculty of Medicine, TU-Dresden, Germany
| | - Andreas Dahl
- Deep Sequencing Group-SFB655, Biotechnology Center, TU-Dresden, Germany
| | - Federico Calegari
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, Faculty of Medicine, TU-Dresden, Germany
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62
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The Role of TOX in the Development of Innate Lymphoid Cells. Mediators Inflamm 2015; 2015:243868. [PMID: 26556952 PMCID: PMC4628649 DOI: 10.1155/2015/243868] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/27/2015] [Indexed: 11/18/2022] Open
Abstract
TOX, an evolutionarily conserved member of the HMG-box family of proteins, is essential for the development of various cells of both the innate and adaptive immune system. TOX is required for the development of CD4(+) T lineage cells in the thymus, including natural killer T and T regulatory cells, as well as development of natural killer cells and fetal lymphoid tissue inducer cells, the latter required for lymph node organogenesis. Recently, we have identified a broader role for TOX in the innate immune system, demonstrating that this nuclear protein is required for generation of bone marrow progenitors that have potential to give rise to all innate lymphoid cells. Innate lymphoid cells, classified according to transcription factor expression and cytokine secretion profiles, derive from common lymphoid progenitors in the bone marrow and require Notch signals for their development. We discuss here the role of TOX in specifying CLP toward an innate lymphoid cell fate and hypothesize a possible role for TOX in regulating Notch gene targets during innate lymphoid cell development.
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63
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Seehus CR, Aliahmad P, de la Torre B, Iliev ID, Spurka L, Funari VA, Kaye J. The development of innate lymphoid cells requires TOX-dependent generation of a common innate lymphoid cell progenitor. Nat Immunol 2015; 16:599-608. [PMID: 25915732 PMCID: PMC4439271 DOI: 10.1038/ni.3168] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/30/2015] [Indexed: 12/14/2022]
Abstract
Diverse innate lymphoid cell (ILC) subtypes have been defined on the basis of effector function and transcription factor expression. ILCs derive from common lymphoid progenitors, although the transcriptional pathways that lead to ILC-lineage specification remain poorly characterized. Here we found that the transcriptional regulator TOX was required for the in vivo differentiation of common lymphoid progenitors into ILC lineage-restricted cells. In vitro modeling demonstrated that TOX deficiency resulted in early defects in the survival or proliferation of progenitor cells, as well as ILC differentiation at a later stage. In addition, comparative transcriptome analysis of bone marrow progenitors revealed that TOX-deficient cells failed to upregulate many genes of the ILC program, including genes that are targets of Notch, which indicated that TOX is a key determinant of early specification to the ILC lineage.
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Affiliation(s)
- Corey R Seehus
- Research Division of Immunology, Departments of Biomedical Sciences and Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Parinaz Aliahmad
- Research Division of Immunology, Departments of Biomedical Sciences and Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Brian de la Torre
- Research Division of Immunology, Departments of Biomedical Sciences and Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Iliyan D Iliev
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Lindsay Spurka
- Genomics Core Facility, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Vincent A Funari
- Genomics Core Facility, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Jonathan Kaye
- 1] Research Division of Immunology, Departments of Biomedical Sciences and Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA. [2] Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA
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64
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Boonk SE, Çetinözman F, Vermeer MH, Jansen PM, Willemze R. Differential expression of TOX by skin-infiltrating T cells in Sézary syndrome and erythrodermic dermatitis. J Cutan Pathol 2015; 42:604-9. [PMID: 25777533 DOI: 10.1111/cup.12490] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 03/10/2015] [Accepted: 03/10/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND The histopathologic differentiation between Sézary syndrome (SS) and erythrodermic dermatitis may be extremely difficult. In this immunohistochemical study, it was investigated if thymocyte selection-associated high mobility group box protein (TOX) and C-MYC can be used as additional diagnostic markers to differentiate between SS and erythrodermic dermatitis. METHOD Paraffin-embedded skin biopsies from 15 SS patients and 17 erythrodermic dermatitis patients were stained and scored for TOX or C-MYC expression. RESULTS Strong nuclear staining for TOX in more than 50% of skin-infiltrating T cells was observed in 13 of 15 (87%) SS cases, whereas erythrodermic dermatitis cases showed weak nuclear staining in 11-50% (median: 25%) of the T cells; strong nuclear staining as found in SS was never observed in erythrodermic dermatitis. No significant differences in C-MYC expression between SS and erythrodermic dermatitis were found. In most patients of both groups, percentages of C-MYC positive-cells varied between less than 10 and 25% of skin-infiltrating T cells. CONCLUSION Our results suggest that strong expression of TOX in more than 50% of skin-infiltrating T cells in erythrodermic skin is a useful marker in the differentiation between SS and erythrodermic dermatitis, whereas staining for C-MYC does not contribute to differential diagnosis.
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Affiliation(s)
- Stephanie E Boonk
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Fatma Çetinözman
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Maarten H Vermeer
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Patty M Jansen
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Rein Willemze
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
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Thymocyte selection-associated high mobility group box gene (TOX) is aberrantly over-expressed in mycosis fungoides and correlates with poor prognosis. Oncotarget 2015; 5:4418-25. [PMID: 24947046 PMCID: PMC4147334 DOI: 10.18632/oncotarget.2031] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Mycosis fungoides (MF) often mimics the common chronic inflammatory skin diseases and is difficult to be diagnosed with certainty, partly because of the lack of well-characterized molecular markers. Previously, we discovered that TOX, a key T cell development regulator,was aberrantly over-expressed in early stage MF. In the current multi-center study involving two independent patient cohorts, we determined the prevalence of TOX over-expression in the full spectrum of MF skin biopsies, and tested if TOX expression levels correlated with long term clinical outcomes. We examined TOX expression levels in 113 MF biopsies. We found that the MF biopsies expressed higher TOX mRNA than the controls in both cohorts (17.9 fold in cohort 1, P = 0.002; 5.8 fold in cohort 2, P < 0.0001). In addition, thicker skin lesions such as plaques and tumors expressed even higher TOX levels than thinner patches. Further, TOX over-expression differentiated MF from the controls (area under the curve [AUC]=0.87, P < 0.0001). Finally, high TOX mRNA levels correlated with increased risks of disease progression (P = 0.003) and disease-specific mortality (P = 0.008). In conclusion, TOX may be a useful marker for improving MF diagnosis and prognostication.
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66
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Yu X, Luo Y, Liu J, Liu Y, Sun Q. TOX acts an oncological role in mycosis fungoides. PLoS One 2015; 10:e0117479. [PMID: 25811617 PMCID: PMC4374776 DOI: 10.1371/journal.pone.0117479] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 12/23/2014] [Indexed: 11/17/2022] Open
Abstract
Mycosis fungoides (MF) is a low-grade lymphoma characterized by clonal expansion of atypical CD4+ skin-homing T lymphocytes. Herein, we examined the role of thymocytes selection associated HMG-box (TOX), a gene previously found to be unregulated in MF skin biopsies, in MF pathogenesis. TOX encodes a high-mobility group family (HMG) domain DNA binding nuclear protein, which regulates the differentiation of developing T-cells. First, we confirmed that TOX expression levels in MF were increased compared with those in benign inflammatory dermatitis (BID) and normal skin. In addition, TOX level increased with the progression MF from patch stage to tumor stage. Overexpression of TOX accelerated the proliferation and migration of MF cell lines in vitro, which were blocked by AKT inhibitors. In conclusion, our study confirmed that TOX was highly expressed in MF lesions and accelerates the proliferation and migration of MF. TOX is a diagnostic marker for MF and may play a pathogenic role in disease progression.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yixin Luo
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Jie Liu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yuehua Liu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Qiuning Sun
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
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Klose CSN, Diefenbach A. Transcription factors controlling innate lymphoid cell fate decisions. Curr Top Microbiol Immunol 2015; 381:215-55. [PMID: 25038936 DOI: 10.1007/82_2014_381] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The mucosal epithelium is in direct contact with symbiotic and pathogenic microorganisms. Therefore, the mucosal surface is the principal portal of entry for invading pathogens and immune cells accumulated in the intestine to prevent infections. In addition to these conventional immune system functions, it has become clear that immune cells during steady-state continuously integrate microbial and nutrient-derived signals from the environment to support organ homeostasis. A major role in both processes is played by a recently discovered group of lymphocytes referred to as innate lymphoid cells (ILCs) Innate lymphoid cells (ILCs) that are specifically enriched at mucosal surfaces but are rather rare in secondary lymphoid organs. In analogy to the dichotomy between CD8 and CD4 T cells, we propose to classify ILCs into interleukin-7 receptor α-negative cytotoxic ILCs and IL-7Rα(+) helper-like ILCs. Dysregulated immune responses triggered by the various ILC subsets have been linked to inflammatory diseases such as inflammatory bowel disease, atopic dermatitis and airway hyperresponsiveness. Here, we will review recent progress in determining the transcriptional and developmental programs that control ILC fate decisions.
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Affiliation(s)
- Christoph S N Klose
- Institute of Medical Microbiology and Hygiene, University of Mainz Medical Centre, Obere Zahlbacher Strasse 67, 55131, Mainz, Germany
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68
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Karow M, Berninger B. In-TOX-icating neurogenesis. EMBO J 2015; 34:832-4. [PMID: 25691243 DOI: 10.15252/embj.201591107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Early development of the mammalian cerebral cortex proceeds via a sequence of proliferative and differentiative steps from neural stem cells toward neurons and glia. However, how these steps are molecularly orchestrated is still only partially understood. In this issue of The EMBO Journal, Artegiani and colleagues implicate Tox, a HMG-box transcription factor previously known only for its role in lymphocyte development, in early cortical development.
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Affiliation(s)
- Marisa Karow
- Physiological Genomics, Institute of Physiology, Ludwig-Maximilians University Munich, Munich, Germany Laboratory "Adult Neurogenesis and Cellular Reprogramming", Institute of Physiological Chemistry, University Medical Center Johannes Gutenberg University Mainz, Mainz, Germany
| | - Benedikt Berninger
- Laboratory "Adult Neurogenesis and Cellular Reprogramming", Institute of Physiological Chemistry, University Medical Center Johannes Gutenberg University Mainz, Mainz, Germany Focus Program Translational Neuroscience, Johannes Gutenberg University Mainz, Mainz, Germany
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69
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Interleukin-13 is overexpressed in cutaneous T-cell lymphoma cells and regulates their proliferation. Blood 2015; 125:2798-805. [PMID: 25628470 DOI: 10.1182/blood-2014-07-590398] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 01/15/2015] [Indexed: 01/26/2023] Open
Abstract
Cutaneous T-cell lymphomas (CTCLs) primarily affect skin and are characterized by proliferation of mature CD4(+) T-helper cells. The pattern of cytokine production in the skin and blood is considered to be of major importance for the pathogenesis of CTCLs. Abnormal cytokine expression in CTCLs may be responsible for enhanced proliferation of the malignant cells and/or depression of the antitumor immune response. Here we show that interleukin-13 (IL-13) and its receptors IL-13Rα1 and IL-13Rα2 are highly expressed in the clinically involved skin of CTCL patients. We also show that malignant lymphoma cells, identified by the coexpression of CD4 and TOX (thymus high-mobility group box), in the skin and blood of CTCL patients produce IL-13 and express both receptors. IL-13 induces CTCL cell growth in vitro and signaling through the IL-13Rα1. Furthermore, antibody-mediated neutralization of IL-13 or soluble IL-13Rα2 molecules can lead to inhibition of tumor-cell proliferation, implicating IL-13 as an autocrine factor in CTCL. Importantly, we established that IL-13 synergizes with IL-4 in inhibiting CTCL cell growth and that blocking the IL-4/IL-13 signaling pathway completely reverses tumor-cell proliferation. We conclude that IL-13 and its signaling mediators are novel markers of CTCL malignancy and potential therapeutic targets for intervention.
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Abstract
Natural killer (NK) cells are innate lymphocytes that survey the environment and protect the host from infected and cancerous cells. As their name implies, NK cells represent an early line of defense during pathogen invasion by directly killing infected cells and secreting inflammatory cytokines. Although the function of NK cells was first described more than four decades ago, the development of this cytotoxic lineage is not well understood. In recent years, we have begun to identify specific transcription factors that control each stage of development and maturation, from ontogeny of the NK cell progenitor to the effector functions of activated NK cells in peripheral organs. This chapter highlights the transcription factors that are unique to NK cells, or shared between NK cells and other hematopoietic cell lineages, but govern the biology of this cytolytic lymphocyte.
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Affiliation(s)
- Joseph C Sun
- Memorial Sloan Kettering Cancer Center, Department of Immunology and Microbial Pathogenesis, Weill Cornell Medical College, 408 East 69th Street, ZRC-1402, New York, NY, 10065, USA.
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Abstract
TOX is a nuclear factor essential for the development of CD4(+) T cells in the thymus. It is normally expressed in low amounts in mature CD4(+) T cells of the skin and the peripheral blood. We have recently discovered that the transcript levels of TOX were significantly increased in mycosis fungoides, the most common type of cutaneous T-cell lymphoma (CTCL), as compared to normal skin or benign inflammatory dermatoses. However, its involvement in advanced CTCL and its biological effects on CTCL pathogenesis have not been explored. In this study, we demonstrate that TOX expression is also enhanced significantly in primary CD4(+)CD7(-) cells from patients with Sézary syndrome, a leukemic variant of CTCL, and that high TOX transcript levels correlate with increased disease-specific mortality. Stable knockdown of TOX in CTCL cells promoted apoptosis and reduced cell cycle progression, leading to less cell viability and colony-forming ability in vitro and to reduced tumor growth in vivo. Furthermore, TOX knockdown significantly increased 2 cyclin-dependent kinase (CDK) inhibitors, CDKN1B and CDKN1C. Lastly, blocking CDKN1B and CDKN1C reversed growth inhibition of TOX knockdown. Collectively, these findings provide strong evidence that aberrant TOX activation is a critical oncogenic event for CTCL.
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Artegiani B, de Jesus Domingues AM, Bragado Alonso S, Brandl E, Massalini S, Dahl A, Calegari F. Tox: a multifunctional transcription factor and novel regulator of mammalian corticogenesis. EMBO J 2014; 34:896-910. [PMID: 25527292 DOI: 10.15252/embj.201490061] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/03/2014] [Indexed: 01/17/2023] Open
Abstract
Major efforts are invested to characterize the factors controlling the proliferation of neural stem cells. During mammalian corticogenesis, our group has identified a small pool of genes that are transiently downregulated in the switch of neural stem cells to neurogenic division and reinduced in newborn neurons. Among these switch genes, we found Tox, a transcription factor with hitherto uncharacterized roles in the nervous system. Here, we investigated the role of Tox in corticogenesis by characterizing its expression at the tissue, cellular and temporal level. We found that Tox is regulated by calcineurin/Nfat signalling. Moreover, we combined DNA adenine methyltransferase identification (DamID) with deep sequencing to characterize the chromatin binding properties of Tox including its motif and downstream transcriptional targets including Sox2, Tbr2, Prox1 and other key factors. Finally, we manipulated Tox in the developing brain and validated its multiple roles in promoting neural stem cell proliferation and neurite outgrowth of newborn neurons. Our data provide a valuable resource to study the role of Tox in other tissues and highlight a novel key player in brain development.
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Affiliation(s)
- Benedetta Artegiani
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, TU-Dresden, Dresden, Germany
| | | | - Sara Bragado Alonso
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, TU-Dresden, Dresden, Germany
| | - Elisabeth Brandl
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, TU-Dresden, Dresden, Germany
| | - Simone Massalini
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, TU-Dresden, Dresden, Germany
| | - Andreas Dahl
- Deep Sequencing Group-SFB655, Biotechnology Center, TU-Dresden, Dresden, Germany
| | - Federico Calegari
- DFG-Research Center for Regenerative Therapies, Cluster of Excellence, TU-Dresden, Dresden, Germany
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73
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Asner SA, Morré SA, Bochud PY, Greub G. Host factors and genetic susceptibility to infections due to intracellular bacteria and fastidious organisms. Clin Microbiol Infect 2014; 20:1246-53. [PMID: 25366416 DOI: 10.1111/1469-0691.12806] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/24/2014] [Accepted: 10/24/2014] [Indexed: 12/14/2022]
Abstract
While genetic polymorphisms play a paramount role in tuberculosis (TB), less is known about their contribution to the severity of diseases caused by other intracellular bacteria and fastidious microorganisms. We searched electronic databases for observational studies reporting on host factors and genetic predisposition to infections caused by intracellular fastidious bacteria published up to 30 May 2014. The contribution of genetic polymorphisms was documented for TB. This includes genetic defects in the mononuclear phagocyte/T helper cell type 1 (Th1) pathway contributing to disseminated TB disease in children and genome-wide linkage analysis (GWAS) in reactivated pulmonary TB in adults. Similarly, experimental studies supported the role of host genetic factors in the clinical presentation of illnesses resulting from other fastidious intracellular bacteria. These include IL-6 -174G/C or low mannose-binding (MBL) polymorphisms, which are incriminated in chronic pulmonary conditions triggered by C. pneumoniae, type 2-like cytokine secretion polymorphisms, which are correlated with various clinical patterns of M. pneumoniae infections, and genetic variation in the NOD2 gene, which is an indicator of tubal pathology resulting from Chamydia trachomatis infections. Monocyte/macrophage migration and T lymphocyte recruitment defects are corroborated to ineffective granuloma formation observed among patients with chronic Q fever. Similar genetic polymorphisms have also been suggested for infections caused by T. whipplei although not confirmed yet. In conclusion, this review supports the paramount role of genetic factors in clinical presentations and severity of infections caused by intracellular fastidious bacteria. Genetic predisposition should be further explored through such as exome sequencing.
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Affiliation(s)
- S A Asner
- Service of Infectious Diseases, Department of Internal Medicine, University Hospital Center, Lausanne, Switzerland; Unit of Pediatric Infectious Diseases and Vaccinology, Department of Paediatrics, University Hospital Center, Lausanne, Switzerland
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Kang R, Chen R, Zhang Q, Hou W, Wu S, Cao L, Huang J, Yu Y, Fan XG, Yan Z, Sun X, Wang H, Wang Q, Tsung A, Billiar TR, Zeh HJ, Lotze MT, Tang D. HMGB1 in health and disease. Mol Aspects Med 2014; 40:1-116. [PMID: 25010388 PMCID: PMC4254084 DOI: 10.1016/j.mam.2014.05.001] [Citation(s) in RCA: 701] [Impact Index Per Article: 70.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 05/05/2014] [Indexed: 12/22/2022]
Abstract
Complex genetic and physiological variations as well as environmental factors that drive emergence of chromosomal instability, development of unscheduled cell death, skewed differentiation, and altered metabolism are central to the pathogenesis of human diseases and disorders. Understanding the molecular bases for these processes is important for the development of new diagnostic biomarkers, and for identifying new therapeutic targets. In 1973, a group of non-histone nuclear proteins with high electrophoretic mobility was discovered and termed high-mobility group (HMG) proteins. The HMG proteins include three superfamilies termed HMGB, HMGN, and HMGA. High-mobility group box 1 (HMGB1), the most abundant and well-studied HMG protein, senses and coordinates the cellular stress response and plays a critical role not only inside of the cell as a DNA chaperone, chromosome guardian, autophagy sustainer, and protector from apoptotic cell death, but also outside the cell as the prototypic damage associated molecular pattern molecule (DAMP). This DAMP, in conjunction with other factors, thus has cytokine, chemokine, and growth factor activity, orchestrating the inflammatory and immune response. All of these characteristics make HMGB1 a critical molecular target in multiple human diseases including infectious diseases, ischemia, immune disorders, neurodegenerative diseases, metabolic disorders, and cancer. Indeed, a number of emergent strategies have been used to inhibit HMGB1 expression, release, and activity in vitro and in vivo. These include antibodies, peptide inhibitors, RNAi, anti-coagulants, endogenous hormones, various chemical compounds, HMGB1-receptor and signaling pathway inhibition, artificial DNAs, physical strategies including vagus nerve stimulation and other surgical approaches. Future work further investigating the details of HMGB1 localization, structure, post-translational modification, and identification of additional partners will undoubtedly uncover additional secrets regarding HMGB1's multiple functions.
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Affiliation(s)
- Rui Kang
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA.
| | - Ruochan Chen
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Qiuhong Zhang
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Wen Hou
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Sha Wu
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Lizhi Cao
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jin Huang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yan Yu
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Xue-Gong Fan
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zhengwen Yan
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA; Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, China
| | - Xiaofang Sun
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510510, China
| | - Haichao Wang
- Laboratory of Emergency Medicine, The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
| | - Qingde Wang
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Allan Tsung
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Herbert J Zeh
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Michael T Lotze
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Daolin Tang
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA.
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75
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Diefenbach A, Colonna M, Koyasu S. Development, differentiation, and diversity of innate lymphoid cells. Immunity 2014; 41:354-365. [PMID: 25238093 DOI: 10.1016/j.immuni.2014.09.005] [Citation(s) in RCA: 427] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Indexed: 01/11/2023]
Abstract
Recent years have witnessed the discovery of an unprecedented complexity in innate lymphocyte lineages, now collectively referred to as innate lymphoid cells (ILCs). ILCs are preferentially located at barrier surfaces and are important for protection against pathogens and for the maintenance of organ homeostasis. Inappropriate activation of ILCs has been linked to the pathogenesis of inflammatory and autoimmune disorders. Recent evidence suggests that ILCs can be grouped into two separate lineages, cytotoxic ILCs represented by conventional natural killer (cNK) cells and cytokine-producing helper-like ILCs (i.e., ILC1s, ILC2s, ILC3s). We will focus here on current work in humans and mice that has identified core transcriptional circuitry required for the commitment of lymphoid progenitors to the ILC lineage. The striking similarities in transcriptional control of ILC and T cell lineages reveal important insights into the evolution of transcriptional programs required to protect multicellular organisms against infections and to fortify barrier surfaces.
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Affiliation(s)
- Andreas Diefenbach
- Research Centre for Immunology and Immunotherapy, University of Mainz Medical Centre, Obere Zahlbacher Strasse 67, 55131 Mainz, Germany; Institute of Medical Microbiology and Hygiene, University of Mainz Medical Centre, Obere Zahlbacher Strasse 67, 55131 Mainz, Germany.
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, 660 S. Euclid, St. Louis, MO 63110, USA
| | - Shigeo Koyasu
- Laboratory for Immune Cell Systems, RIKEN Research Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; Department of Microbiology and Immunology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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76
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Abel L, El-Baghdadi J, Bousfiha AA, Casanova JL, Schurr E. Human genetics of tuberculosis: a long and winding road. Philos Trans R Soc Lond B Biol Sci 2014; 369:20130428. [PMID: 24821915 PMCID: PMC4024222 DOI: 10.1098/rstb.2013.0428] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Only a small fraction of individuals exposed to Mycobacterium tuberculosis develop clinical tuberculosis (TB). Over the past century, epidemiological studies have shown that human genetic factors contribute significantly to this interindividual variability, and molecular progress has been made over the past decade for at least two of the three key TB-related phenotypes: (i) a major locus controlling resistance to infection with M. tuberculosis has been identified, and (ii) proof of principle that severe TB of childhood can result from single-gene inborn errors of interferon-γ immunity has been provided; genetic association studies with pulmonary TB in adulthood have met with more limited success. Future genetic studies of these three phenotypes could consider subgroups of subjects defined on the basis of individual (e.g. age at TB onset) or environmental (e.g. pathogen strain) factors. Progress may also be facilitated by further methodological advances in human genetics. Identification of the human genetic variants controlling the various stages and forms of TB is critical for understanding TB pathogenesis. These findings should have major implications for TB control, in the definition of improved prevention strategies, the optimization of vaccines and clinical trials and the development of novel treatments aiming to restore deficient immune responses.
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Affiliation(s)
- Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale U1163, , 75015 Paris, France
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77
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Kumar V. Innate lymphoid cells: New paradigm in immunology of inflammation. Immunol Lett 2014; 157:23-37. [DOI: 10.1016/j.imlet.2013.11.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 10/20/2013] [Accepted: 11/04/2013] [Indexed: 12/27/2022]
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Morchikh M, Naughtin M, Di Nunzio F, Xavier J, Charneau P, Jacob Y, Lavigne M. TOX4 and NOVA1 proteins are partners of the LEDGF PWWP domain and affect HIV-1 replication. PLoS One 2013; 8:e81217. [PMID: 24312278 PMCID: PMC3842248 DOI: 10.1371/journal.pone.0081217] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 10/10/2013] [Indexed: 12/31/2022] Open
Abstract
PWWP domains are involved in the chromatin attachment of several proteins. They bind to both DNA and proteins and their interaction with specific histone methylation marks define them as a new class of histone code readers. The lens epithelium derived growth factor (LEDGF/p75) contains an N-terminal PWWP domain necessary for its interaction with chromatin but also a C-terminal domain which interacts with several proteins, such as lentiviral integrases. These two domains confer a chromatin-tethering function to LEDGF/p75 and in the case of lentiviral integrases, this tethering participates in the efficiency and site selectivity of integration. Although proteins interacting with LEDGF/p75 C-terminal domain have been extensively studied, no data exist about partners of its PWWP domain regulating its interaction with chromatin. In this study, we report the identification by yeast-two-hybrid of thirteen potential partners of the LEDGF PWWP domain. Five of these interactions were confirmed in mammalian cells, using both a protein complementation assay and co-immunoprecipitation approaches. Three of these partners interact with full length LEDGF/p75, they are specific for PWWP domains of the HDGF family and they require PWWP amino acids essential for the interaction with chromatin. Among them, the transcription activator TOX4 and the splicing cofactor NOVA1 were selected for a more extensive study. These two proteins or their PWWP interacting regions (PIR) colocalize with LEDGF/p75 in Hela cells and interact in vitro in the presence of DNA. Finally, single round VSV-G pseudotyped HIV-1 but not MLV infection is inhibited in cells overexpressing these two PIRs. The observed inhibition of infection can be attributed to a defect in the integration step. Our data suggest that a regulation of LEDGF interaction with chromatin by cellular partners of its PWWP domain could be involved in several processes linked to LEDGF tethering properties, such as lentiviral integration, DNA repair or transcriptional regulation.
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Affiliation(s)
- Mehdi Morchikh
- Ecole Normale Supérieure, Laboratoire Joliot-Curie, Centre National de la Recherche Scientifique, Lyon, France
- Institut Pasteur, Unité de Virologie Structurale, Centre National de la Recherche Scientifique, Unité de recherche associée, Paris, France
- Université Pierre et Marie Curie, Paris, France
| | - Monica Naughtin
- Ecole Normale Supérieure, Laboratoire Joliot-Curie, Centre National de la Recherche Scientifique, Lyon, France
| | - Francesca Di Nunzio
- Institut Pasteur, Unité de Virologie Moléculaire et Vaccinologie, Centre National de la Recherche Scientifique, Paris, France
| | - Johan Xavier
- Ecole Normale Supérieure, Laboratoire Joliot-Curie, Centre National de la Recherche Scientifique, Lyon, France
| | - Pierre Charneau
- Institut Pasteur, Unité de Virologie Moléculaire et Vaccinologie, Centre National de la Recherche Scientifique, Paris, France
| | - Yves Jacob
- Institut Pasteur, Unité de Génétique Moléculaire des Virus à ARN, Centre National de la Recherche Scientifique, Paris, France
- Center for Cancer Systems Biology and Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America
| | - Marc Lavigne
- Ecole Normale Supérieure, Laboratoire Joliot-Curie, Centre National de la Recherche Scientifique, Lyon, France
- Institut Pasteur, Unité de Virologie Structurale, Centre National de la Recherche Scientifique, Unité de recherche associée, Paris, France
- * E-mail:
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miR-223 regulates cell growth and targets proto-oncogenes in mycosis fungoides/cutaneous T-cell lymphoma. J Invest Dermatol 2013; 134:1101-1107. [PMID: 24304814 PMCID: PMC3961555 DOI: 10.1038/jid.2013.461] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 10/01/2013] [Accepted: 10/01/2013] [Indexed: 12/16/2022]
Abstract
The pathogenesis of the cutaneous T-cell lymphoma (CTCL), mycosis fungoides (MF) is unclear. MicroRNA (miRNA) are small non-coding RNA that target mRNA leading to reduced mRNA translation. Recently, specific miRNA were shown to be altered in CTCL. We identified significantly reduced expression of miR-223 in early stage MF skin, and the levels of miR-223 diminished further in advanced stage disease. CTCL peripheral blood mononuclear cells and cell lines also had reduced miR-223 as compared to controls. Elevated expression of miR-223 in these cell lines reduced cell growth and clonogenic potential, whereas inhibition of miR-223 increased cell numbers. Investigations into putative miR-223 targets with oncogenic function, including E2F1 and MEF2C, and the predicted miR-223 target, TOX, revealed all three are targeted by miR-223 in CTCL. E2F1, MEF2C, and TOX proteins were decreased with miR-223 overexpression, while miR-223 inhibition led to increased protein levels in CTCL. In addition, we showed the 3′-UTR of TOX mRNA was a genuine target of miR-223. Therefore, reduced levels of miR-223 in MF/CTCL lead to increased expression of E2F1, MEF2C, and TOX, which likely contribute to the development and/or progression of CTCL. Thus, miR-223 and its targets may be useful for the development of new therapeutics for MF/CTCL.
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Grant AV, El Baghdadi J, Sabri A, El Azbaoui S, Alaoui-Tahiri K, Abderrahmani Rhorfi I, Gharbaoui Y, Abid A, Benkirane M, Raharimanga V, Richard V, Orlova M, Boland A, Migaud M, Okada S, Nolan DK, Bustamante J, Barreiro LB, Schurr E, Boisson-Dupuis S, Rasolofo V, Casanova JL, Abel L. Age-dependent association between pulmonary tuberculosis and common TOX variants in the 8q12-13 linkage region. Am J Hum Genet 2013; 92:407-14. [PMID: 23415668 DOI: 10.1016/j.ajhg.2013.01.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 10/12/2012] [Accepted: 01/22/2013] [Indexed: 11/19/2022] Open
Abstract
Only a small fraction of individuals infected with Mycobacterium tuberculosis develop clinical tuberculosis (TB) in their lifetime. Genetic epidemiological evidence suggests a genetic determinism of pulmonary TB (PTB), but the molecular basis of genetic predisposition to PTB remains largely unknown. We used a positional-cloning approach to carry out ultrafine linkage-disequilibrium mapping of a previously identified susceptibility locus in chromosomal region 8q12-13 by genotyping 3,216 SNPs in a family-based Moroccan sample including 286 offspring with PTB. We observed 44 PTB-associated SNPs (p < 0.01), which were genotyped in an independent set of 317 cases and 650 controls from Morocco. A single signal, consisting of two correlated SNPs close to TOX, rs1568952 and rs2726600 (combined p = 1.1 × 10(-5) and 9.2 × 10(-5), respectively), was replicated. Stronger evidence of association was found in individuals who developed PTB before the age of 25 years (combined p for rs1568952 = 4.4 × 10(-8); odds ratio of PTB for AA versus AG/GG = 3.09 [1.99-4.78]). The association with rs2726600 (p = 0.04) was subsequently replicated in PTB-affected subjects under 25 years in a study of 243 nuclear families from Madagascar. Stronger evidence of replication in Madagascar was obtained for additional SNPs in strong linkage disequilibrium with the two initial SNPs (p = 0.003 for rs2726597), further confirming the signal. We thus identified around rs1568952 and rs2726600 a cluster of SNPs strongly associated with early-onset PTB in Morocco and Madagascar. SNP rs2726600 is located in a transcription-factor binding site in the 3' region of TOX, and further functional explorations will focus on CD4 T lymphocytes.
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Affiliation(s)
- Audrey V Grant
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale U980, Paris, France
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Mjösberg J, Bernink J, Peters C, Spits H. Transcriptional control of innate lymphoid cells. Eur J Immunol 2012; 42:1916-23. [DOI: 10.1002/eji.201242639] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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