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Belean A, Xue E, Cisneros B, Roberson EDO, Paley MA, Bigley TM. Transcriptomic profiling of thymic dysregulation and viral tropism after neonatal roseolovirus infection. Front Immunol 2024; 15:1375508. [PMID: 38895117 PMCID: PMC11183875 DOI: 10.3389/fimmu.2024.1375508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/10/2024] [Indexed: 06/21/2024] Open
Abstract
Introduction Herpesviruses, including the roseoloviruses, have been linked to autoimmune disease. The ubiquitous and chronic nature of these infections have made it difficult to establish a causal relationship between acute infection and subsequent development of autoimmunity. We have shown that murine roseolovirus (MRV), which is highly related to human roseoloviruses, induces thymic atrophy and disruption of central tolerance after neonatal infection. Moreover, neonatal MRV infection results in development of autoimmunity in adult mice, long after resolution of acute infection. This suggests that MRV induces durable immune dysregulation. Methods In the current studies, we utilized single-cell RNA sequencing (scRNAseq) to study the tropism of MRV in the thymus and determine cellular processes in the thymus that were disrupted by neonatal MRV infection. We then utilized tropism data to establish a cell culture system. Results Herein, we describe how MRV alters the thymic transcriptome during acute neonatal infection. We found that MRV infection resulted in major shifts in inflammatory, differentiation and cell cycle pathways in the infected thymus. We also observed shifts in the relative number of specific cell populations. Moreover, utilizing expression of late viral transcripts as a proxy of viral replication, we identified the cellular tropism of MRV in the thymus. This approach demonstrated that double negative, double positive, and CD4 single positive thymocytes, as well as medullary thymic epithelial cells were infected by MRV in vivo. Finally, by applying pseudotime analysis to viral transcripts, which we refer to as "pseudokinetics," we identified viral gene transcription patterns associated with specific cell types and infection status. We utilized this information to establish the first cell culture systems susceptible to MRV infection in vitro. Conclusion Our research provides the first complete picture of roseolovirus tropism in the thymus after neonatal infection. Additionally, we identified major transcriptomic alterations in cell populations in the thymus during acute neonatal MRV infection. These studies offer important insight into the early events that occur after neonatal MRV infection that disrupt central tolerance and promote autoimmune disease.
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Affiliation(s)
- Andrei Belean
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Eden Xue
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
| | - Benjamin Cisneros
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
| | - Elisha D. O. Roberson
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, United States
| | - Michael A. Paley
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
| | - Tarin M. Bigley
- Division of Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States
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Elhage R, Kelly M, Goudin N, Megret J, Legrand A, Nemazanyy I, Patitucci C, Quellec V, Wai T, Hamaï A, Ezine S. Mitochondrial dynamics and metabolic regulation control T cell fate in the thymus. Front Immunol 2024; 14:1270268. [PMID: 38288115 PMCID: PMC10822881 DOI: 10.3389/fimmu.2023.1270268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/20/2023] [Indexed: 01/31/2024] Open
Abstract
Several studies demonstrated that mitochondrial dynamics and metabolic pathways control T cell fate in the periphery. However, little is known about their implication in thymocyte development. Our results showed that thymic progenitors (CD3-CD4-CD8- triple negative, TN), in active division, have essentially a fused mitochondrial morphology and rely on high glycolysis and mitochondrial oxidative phosphorylation (OXPHOS). As TN cells differentiate to double positive (DP, CD4+CD8+) and single positive (SP, CD4+ and CD8+) stages, they became more quiescent, their mitochondria fragment and they downregulate glycolysis and OXPHOS. Accordingly, in vitro inhibition of the mitochondrial fission during progenitor differentiation on OP9-DL4 stroma, affected the TN to DP thymocyte transition by enhancing the percentage of TN and reducing that of DP, leading to a decrease in the total number of thymic cells including SP T cells. We demonstrated that the stage 3 triple negative pre-T (TN3) and the stage 4 triple negative pre-T (TN4) have different metabolic and functional behaviors. While their mitochondrial morphologies are both essentially fused, the LC-MS based analysis of their metabolome showed that they are distinct: TN3 rely more on OXPHOS whereas TN4 are more glycolytic. In line with this, TN4 display an increased Hexokinase II expression in comparison to TN3, associated with high proliferation and glycolysis. The in vivo inhibition of glycolysis using 2-deoxyglucose (2-DG) and the absence of IL-7 signaling, led to a decline in glucose metabolism and mitochondrial membrane potential. In addition, the glucose/IL-7R connection affects the TN3 to TN4 transition (also called β-selection transition), by enhancing the percentage of TN3, leading to a decrease in the total number of thymocytes. Thus, we identified additional components, essential during β-selection transition and playing a major role in thymic development.
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Affiliation(s)
- Rima Elhage
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
| | - Mairead Kelly
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
| | - Nicolas Goudin
- Platform for Image Analysis Center, SFR Necker, INSERM US 24 - CNRS UMS 3633, Paris, France
| | - Jérôme Megret
- Platform for Cytometry, SFR Necker, INSERM US 24 - CNRS UMS 3633, Paris, France
| | - Agnès Legrand
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
| | - Ivan Nemazanyy
- Platform for Metabolic Analyses, SFR Necker, INSERM US 24 - CNRS UMS 3633, Paris, France
| | - Cécilia Patitucci
- Mitochondrial Biology Group, Institut Pasteur, CNRS UMR 3691, Paris, France
| | - Véronique Quellec
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
| | - Timothy Wai
- Mitochondrial Biology Group, Institut Pasteur, CNRS UMR 3691, Paris, France
| | - Ahmed Hamaï
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
| | - Sophie Ezine
- Institut Necker Enfant-Malades (INEM), INSERM U1151-CNRS UMR 8253, Université de Paris, Paris, France
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Torres-Montaner A. Interactions between the DNA Damage Response and the Telomere Complex in Carcinogenesis: A Hypothesis. Curr Issues Mol Biol 2023; 45:7582-7616. [PMID: 37754262 PMCID: PMC10527771 DOI: 10.3390/cimb45090478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
Contrary to what was once thought, direct cancer originating from normal stem cells seems to be extremely rare. This is consistent with a preneoplastic period of telomere length reduction/damage in committed cells that becomes stabilized in transformation. Multiple observations suggest that telomere damage is an obligatory step preceding its stabilization. During tissue turnover, the telomeres of cells undergoing differentiation can be damaged as a consequence of defective DNA repair caused by endogenous or exogenous agents. This may result in the emergence of new mechanism of telomere maintenance which is the final outcome of DNA damage and the initial signal that triggers malignant transformation. Instead, transformation of stem cells is directly induced by primary derangement of telomere maintenance mechanisms. The newly modified telomere complex may promote survival of cancer stem cells, independently of telomere maintenance. An inherent resistance of stem cells to transformation may be linked to specific, robust mechanisms that help maintain telomere integrity.
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Affiliation(s)
- Antonio Torres-Montaner
- Department of Pathology, Queen’s Hospital, Rom Valley Way, Romford, London RM7 OAG, UK;
- Departamento de Bioquímica y Biologia Molecular, Universidad de Cadiz, Puerto Real, 11510 Cadiz, Spain
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Li D, Quan Z, Ni J, Li H, Qing H. The many faces of the zinc finger protein 335 in brain development and immune system. Biomed Pharmacother 2023; 165:115257. [PMID: 37541176 DOI: 10.1016/j.biopha.2023.115257] [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: 06/02/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/06/2023] Open
Abstract
Zinc finger protein 335 (ZNF335) plays a crucial role in the methylation and, consequently, regulates the expression of a specific set of genes. Variants of the ZNF335 gene have been identified as risk factors for microcephaly in a variety of populations worldwide. Meanwhile, ZNF335 has also been identified as an essential regulator of T-cell development. However, an in-depth understanding of the role of ZNF335 in brain development and T cell maturation is still lacking. In this review, we summarize current knowledge of the molecular mechanisms underlying the involvement of ZNF335 in neuronal and T cell development across a wide range of pre-clinical, post-mortem, ex vivo, in vivo, and clinical studies. We also review the current limitations regarding the study of the pathophysiological functions of ZNF335. Finally, we hypothesize a potential role for ZNF335 in brain disorders and discuss the rationale of targeting ZNF335 as a therapeutic strategy for preventing brain disorders.
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Affiliation(s)
- Danyang Li
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
| | - Zhenzhen Quan
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
| | - Junjun Ni
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
| | - Hui Li
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
| | - Hong Qing
- Key Laboratory of Molecular Medicine and Biotherapy, Department of Biology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
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Sun L, Su Y, Jiao A, Wang X, Zhang B. T cells in health and disease. Signal Transduct Target Ther 2023; 8:235. [PMID: 37332039 PMCID: PMC10277291 DOI: 10.1038/s41392-023-01471-y] [Citation(s) in RCA: 123] [Impact Index Per Article: 123.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 06/20/2023] Open
Abstract
T cells are crucial for immune functions to maintain health and prevent disease. T cell development occurs in a stepwise process in the thymus and mainly generates CD4+ and CD8+ T cell subsets. Upon antigen stimulation, naïve T cells differentiate into CD4+ helper and CD8+ cytotoxic effector and memory cells, mediating direct killing, diverse immune regulatory function, and long-term protection. In response to acute and chronic infections and tumors, T cells adopt distinct differentiation trajectories and develop into a range of heterogeneous populations with various phenotype, differentiation potential, and functionality under precise and elaborate regulations of transcriptional and epigenetic programs. Abnormal T-cell immunity can initiate and promote the pathogenesis of autoimmune diseases. In this review, we summarize the current understanding of T cell development, CD4+ and CD8+ T cell classification, and differentiation in physiological settings. We further elaborate the heterogeneity, differentiation, functionality, and regulation network of CD4+ and CD8+ T cells in infectious disease, chronic infection and tumor, and autoimmune disease, highlighting the exhausted CD8+ T cell differentiation trajectory, CD4+ T cell helper function, T cell contributions to immunotherapy and autoimmune pathogenesis. We also discuss the development and function of γδ T cells in tissue surveillance, infection, and tumor immunity. Finally, we summarized current T-cell-based immunotherapies in both cancer and autoimmune diseases, with an emphasis on their clinical applications. A better understanding of T cell immunity provides insight into developing novel prophylactic and therapeutic strategies in human diseases.
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Affiliation(s)
- Lina Sun
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Anjun Jiao
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Xin Wang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
- Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China.
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, China.
- Xi'an Key Laboratory of Immune Related Diseases, Xi'an, Shannxi, 710061, China.
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6
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Palanichamy JK, Tran TM, King JK, Katzman S, Ritter AJ, Sharma G, Tso C, Contreras JR, Fernando TR, Sanford JR, Rao DS. Distinct oncogenic phenotypes in hematopoietic specific deletions of Trp53. Sci Rep 2023; 13:7490. [PMID: 37160922 PMCID: PMC10169790 DOI: 10.1038/s41598-023-33949-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 04/21/2023] [Indexed: 05/11/2023] Open
Abstract
Loss of function in the tumor suppressor gene TP53 is the most common alteration seen in human cancer. In mice, P53 deletion in all cells leads predominantly to the development of T-cell lymphomas, followed by B-cell lymphomas, sarcomas and teratomas. In order to dissect the role of P53 in the hematopoietic system, we generated and analyzed two different mouse models deficient for P53. A pan-hematopoietic P53 deletion mouse was created using Vav1-Cre based deletion; and a B-cell-specific deletion mouse was created using a CD19-Cre based deletion. The Vav1-P53CKO mice predominantly developed T-cell malignancies in younger mice, and myeloid malignancies in older mice. In T-cell malignancies, there was accelerated thymic cell maturation with overexpression of Notch1 and its downstream effectors. CD19-P53CKO mice developed marginal zone expansion in the spleen, followed by marginal zone lymphoma, some of which progressed to diffuse large B-cell lymphomas. Interestingly, marginal zone and diffuse large B-cell lymphomas had a unique gene expression signature characterized by activation of the PI3K pathway, compared with wild type marginal zone or follicular cells of the spleen. This study demonstrates lineage specific P53 deletion leading to distinct phenotypes secondary to unique gene expression programs set in motion.
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Affiliation(s)
| | - Tiffany M Tran
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA
- Molecular, Cellular and Integrative Physiology Graduate Program, UCLA, Los Angeles, USA
| | | | - Sol Katzman
- Center for Biomolecular Science & Engineering, UCSC, Santa Cruz, USA
| | - Alexander J Ritter
- Department of Molecular, Cell and Developmental Biology and Center for Molecular Biology of RNA, UCSC, Santa Cruz, USA
| | - Gunjan Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Christine Tso
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA
| | - Jorge R Contreras
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA
| | | | - Jeremy R Sanford
- Department of Molecular, Cell and Developmental Biology and Center for Molecular Biology of RNA, UCSC, Santa Cruz, USA
| | - Dinesh S Rao
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, USA.
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, USA.
- Broad Stem Cell Research Center, UCLA, Los Angeles, USA.
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, 650 Charles E Young Drive, Los Angeles, CA, 90095, USA.
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Charnley M, Allam AH, Newton LM, Humbert PO, Russell SM. E-cadherin in developing murine T cells controls spindle alignment and progression through β-selection. SCIENCE ADVANCES 2023; 9:eade5348. [PMID: 36652509 DOI: 10.1126/sciadv.ade5348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
A critical stage of T cell development is β-selection; at this stage, the T cell receptor β (TCRβ) chain is generated, and the developing T cell starts to acquire antigenic specificity. Progression through β-selection is assisted by low-affinity interactions between the nascent TCRβ chain and peptide presented on stromal major histocompatibility complex and cues provided by the niche. In this study, we identify a cue within the developing T cell niche that is critical for T cell development. E-cadherin mediates cell-cell interactions and influences cell fate in many developmental systems. In developing T cells, E-cadherin contributed to the formation of an immunological synapse and the alignment of the mitotic spindle with the polarity axis during division, which facilitated subsequent T cell development. Collectively, these data suggest that E-cadherin facilitates interactions with the thymic niche to coordinate the β-selection stage of T cell development.
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Affiliation(s)
- Mirren Charnley
- Optical Sciences Centre, School of Science, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Amr H Allam
- Optical Sciences Centre, School of Science, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Lucas M Newton
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
- Research Centre for Molecular Cancer Prevention, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Patrick O Humbert
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
- Research Centre for Molecular Cancer Prevention, La Trobe University, Melbourne, Victoria 3086, Australia
- Department of Biochemistry and Pharmacology, University of Melbourne, Melbourne, Victoria 3010, Australia
- Department of Clinical Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Sarah M Russell
- Optical Sciences Centre, School of Science, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Victoria 3010, Australia
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Toribio ML, González-García S. Notch Partners in the Long Journey of T-ALL Pathogenesis. Int J Mol Sci 2023; 24:1383. [PMID: 36674902 PMCID: PMC9866461 DOI: 10.3390/ijms24021383] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/13/2023] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological disease that arises from the oncogenic transformation of developing T cells during T-lymphopoiesis. Although T-ALL prognosis has improved markedly in recent years, relapsing and refractory patients with dismal outcomes still represent a major clinical issue. Consequently, understanding the pathological mechanisms that lead to the appearance of this malignancy and developing novel and more effective targeted therapies is an urgent need. Since the discovery in 2004 that a major proportion of T-ALL patients carry activating mutations that turn NOTCH1 into an oncogene, great efforts have been made to decipher the mechanisms underlying constitutive NOTCH1 activation, with the aim of understanding how NOTCH1 dysregulation converts the physiological NOTCH1-dependent T-cell developmental program into a pathological T-cell transformation process. Several molecular players have so far been shown to cooperate with NOTCH1 in this oncogenic process, and different therapeutic strategies have been developed to specifically target NOTCH1-dependent T-ALLs. Here, we comprehensively analyze the molecular bases of the cross-talk between NOTCH1 and cooperating partners critically involved in the generation and/or maintenance and progression of T-ALL and discuss novel opportunities and therapeutic approaches that current knowledge may open for future treatment of T-ALL patients.
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Affiliation(s)
- María Luisa Toribio
- Immune System Development and Function Unit, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
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Kashiwagi M, Figueroa DS, Ay F, Morgan BA, Georgopoulos K. A double-negative thymocyte-specific enhancer augments Notch1 signaling to direct early T cell progenitor expansion, lineage restriction and β-selection. Nat Immunol 2022; 23:1628-1643. [PMID: 36316479 PMCID: PMC10187983 DOI: 10.1038/s41590-022-01322-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 09/06/2022] [Indexed: 11/11/2022]
Abstract
T cell differentiation requires Notch1 signaling. In the present study, we show that an enhancer upstream of Notch1 active in double-negative (DN) mouse thymocytes is responsible for raising Notch1 signaling intrathymically. This enhancer is required to expand multipotent progenitors intrathymically while delaying early differentiation until lineage restrictions have been established. Early thymic progenitors lacking the enhancer show accelerated differentiation through the DN stages and increased frequency of B, innate lymphoid (IL) and natural killer (NK) cell differentiation. Transcription regulators for T cell lineage restriction and commitment are expressed normally, but IL and NK cell gene expression persists after T cell lineage commitment and T cell receptor β VDJ recombination, Cd3 expression and β-selection have been impaired. This Notch1 enhancer is inactive in double-positive (DP) thymocytes. Its aberrant reactivation at this stage in Ikaros mutants is required for leukemogenesis. Thus, the DN-specific Notch1 enhancer harnesses the regulatory architecture of DN and DP thymocytes to achieve carefully orchestrated changes in Notch1 signaling required for early lineage restrictions and normal T cell differentiation.
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Veiga DFT, Tremblay M, Gerby B, Herblot S, Haman A, Gendron P, Lemieux S, Zúñiga-Pflücker JC, Hébert J, Cohen JP, Hoang T. Monoallelic Heb/Tcf12 Deletion Reduces the Requirement for NOTCH1 Hyperactivation in T-Cell Acute Lymphoblastic Leukemia. Front Immunol 2022; 13:867443. [PMID: 35401501 PMCID: PMC8987207 DOI: 10.3389/fimmu.2022.867443] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/28/2022] [Indexed: 12/21/2022] Open
Abstract
Early T-cell development is precisely controlled by E proteins, that indistinguishably include HEB/TCF12 and E2A/TCF3 transcription factors, together with NOTCH1 and pre-T cell receptor (TCR) signalling. Importantly, perturbations of early T-cell regulatory networks are implicated in leukemogenesis. NOTCH1 gain of function mutations invariably lead to T-cell acute lymphoblastic leukemia (T-ALL), whereas inhibition of E proteins accelerates leukemogenesis. Thus, NOTCH1, pre-TCR, E2A and HEB functions are intertwined, but how these pathways contribute individually or synergistically to leukemogenesis remain to be documented. To directly address these questions, we leveraged Cd3e-deficient mice in which pre-TCR signaling and progression through β-selection is abrogated to dissect and decouple the roles of pre-TCR, NOTCH1, E2A and HEB in SCL/TAL1-induced T-ALL, via the use of Notch1 gain of function transgenic (Notch1ICtg) and Tcf12+/- or Tcf3+/- heterozygote mice. As a result, we now provide evidence that both HEB and E2A restrain cell proliferation at the β-selection checkpoint while the clonal expansion of SCL-LMO1-induced pre-leukemic stem cells in T-ALL is uniquely dependent on Tcf12 gene dosage. At the molecular level, HEB protein levels are decreased via proteasomal degradation at the leukemic stage, pointing to a reversible loss of function mechanism. Moreover, in SCL-LMO1-induced T-ALL, loss of one Tcf12 allele is sufficient to bypass pre-TCR signaling which is required for Notch1 gain of function mutations and for progression to T-ALL. In contrast, Tcf12 monoallelic deletion does not accelerate Notch1IC-induced T-ALL, indicating that Tcf12 and Notch1 operate in the same pathway. Finally, we identify a tumor suppressor gene set downstream of HEB, exhibiting significantly lower expression levels in pediatric T-ALL compared to B-ALL and brain cancer samples, the three most frequent pediatric cancers. In summary, our results indicate a tumor suppressor function of HEB/TCF12 in T-ALL to mitigate cell proliferation controlled by NOTCH1 in pre-leukemic stem cells and prevent NOTCH1-driven progression to T-ALL.
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Affiliation(s)
- Diogo F. T. Veiga
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- Department of Translational Medicine, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Mathieu Tremblay
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
| | - Bastien Gerby
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Université de Toulouse, Institut National de la Santé et de la Recherche Médicale (INSERM), UMR-1037, Université Toulouse III Paul Sabatier (UPS), Toulouse, France
| | - Sabine Herblot
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- Unité de recherche en hémato-oncologie Charles-Bruneau, Centre de Recherche du CHU Sainte-Justine, Montréal, Canada
| | - André Haman
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
| | - Patrick Gendron
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
| | - Sébastien Lemieux
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- Department of Biochemistry and Molecular Medicine, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | | | - Josée Hébert
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- Institut universitaire d’hémato-oncologie et de thérapie cellulaire, Hôpital Maisonneuve-Rosemont, Montréal, QC, Canada
- Quebec Leukemia Cell Bank, Centre de recherche de l’Hôpital Maisonneuve-Rosemont, Montréal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Joseph Paul Cohen
- Department of Computer Science and Operations Research, Université de Montréal, Montreal, QC, Canada
- Université de Montréal, Montreal, QC, Canada
| | - Trang Hoang
- Department of Pharmacology and Physiology, Université de Montréal, Institute for Research in Immunology and Cancer, QC, Canada
- *Correspondence: Trang Hoang,
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11
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Wang X, Jiao A, Sun L, Li W, Yang B, Su Y, Ding R, Zhang C, Liu H, Yang X, Sun C, Zhang B. Zinc finger protein Zfp335 controls early T cell development and survival through β-selection-dependent and -independent mechanisms. eLife 2022; 11:75508. [PMID: 35113015 PMCID: PMC8871394 DOI: 10.7554/elife.75508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 02/03/2022] [Indexed: 11/23/2022] Open
Abstract
T-cell development in the thymus undergoes the process of differentiation, selective proliferation, and survival from CD4−CD8− double negative (DN) stage to CD4+CD8+ double positive (DP) stage prior to the formation of CD4+ helper and CD8+ cytolytic T cells ready for circulation. Each developmental stage is tightly regulated by sequentially operating molecular networks, of which only limited numbers of transcription regulators have been deciphered. Here, we identified Zfp335 transcription factor as a new player in the regulatory network controlling thymocyte development in mice. We demonstrate that Zfp335 intrinsically controls DN to DP transition, as T-cell-specific deficiency in Zfp335 leads to a substantial accumulation of DN3 along with reduction of DP, CD4+, and CD8+ thymocytes. This developmental blockade at DN stage results from the impaired intracellular TCRβ (iTCRβ) expression as well as increased susceptibility to apoptosis in thymocytes. Transcriptomic and ChIP-seq analyses revealed a direct regulation of transcription factors Bcl6 and Rorc by Zfp335. Importantly, enhanced expression of TCRβ and Bcl6/Rorc restores the developmental defect during DN3 to DN4 transition and improves thymocytes survival, respectively. These findings identify a critical role of Zfp335 in controlling T-cell development by maintaining iTCRβ expression-mediated β-selection and independently activating cell survival signaling.
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Affiliation(s)
- Xin Wang
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Anjun Jiao
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Lina Sun
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Wenhua Li
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Biao Yang
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Renyi Ding
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Cangang Zhang
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Haiyan Liu
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Xiaofeng Yang
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Chenming Sun
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, Xi'an Jiaotong University, Xi'an, China
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12
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Zhang W, Pajulas A, Kaplan MH. γδ T Cells in Skin Inflammation. Crit Rev Immunol 2022; 42:43-56. [PMID: 37075018 PMCID: PMC10439530 DOI: 10.1615/critrevimmunol.2022047288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Gamma delta (γδ) T cells are a subset of T lymphocytes that express T cell receptor γ and 5 chains and display structural and functional heterogeneity. γδ T cells are typically of low abundance in the body and account for 1-5% of the blood lymphocytes and peripheral lymphoid tissues. As a bridge between innate and adaptive immunity, γδ T cells are uniquely poised to rapidly respond to stimulation and can regulate immune responses in peripheral tissues. The dendritic epidermal T cells in the skin epidermis can secrete growth factors to regulate skin homeostasis and re-epithelization and release inflammatory factors to mediate wound healing during skin inflammatory responses. Dermal γδ T cells can regulate the inflammatory process by producing interleukin-17 and other cytokines or chemokines. Here, we offer a review of the immune functions of γδ T cells, intending to understand their role in regulating skin barrier integrity and skin wound healing, which may be crucial for the development of novel therapeutics in skin diseases like atopic dermatitis and psoriasis.
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Affiliation(s)
- Wenwu Zhang
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
| | - Abigail Pajulas
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
| | - Mark H Kaplan
- Department of Microbiology & Immunology, Indiana University School Medicine, Indianapolis, IN 46202
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13
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Argenty J, Rouquié N, Bories C, Mélique S, Duplan-Eche V, Saoudi A, Fazilleau N, Lesourne R. A selective LIS1 requirement for mitotic spindle assembly discriminates distinct T-cell division mechanisms within the T-cell lineage. eLife 2022; 11:80277. [PMID: 36519536 PMCID: PMC9797186 DOI: 10.7554/elife.80277] [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: 05/13/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
The ability to proliferate is a common feature of most T-cell populations. However, proliferation follows different cell-cycle dynamics and is coupled to different functional outcomes according to T-cell subsets. Whether the mitotic machineries supporting these qualitatively distinct proliferative responses are identical remains unknown. Here, we show that disruption of the microtubule-associated protein LIS1 in mouse models leads to proliferative defects associated with a blockade of T-cell development after β-selection and of peripheral CD4+ T-cell expansion after antigen priming. In contrast, cell divisions in CD8+ T cells occurred independently of LIS1 following T-cell antigen receptor stimulation, although LIS1 was required for proliferation elicited by pharmacological activation. In thymocytes and CD4+ T cells, LIS1 deficiency did not affect signaling events leading to activation but led to an interruption of proliferation after the initial round of division and to p53-induced cell death. Proliferative defects resulted from a mitotic failure, characterized by the presence of extra-centrosomes and the formation of multipolar spindles, causing abnormal chromosomes congression during metaphase and separation during telophase. LIS1 was required to stabilize dynein/dynactin complexes, which promote chromosome attachment to mitotic spindles and ensure centrosome integrity. Together, these results suggest that proliferative responses are supported by distinct mitotic machineries across T-cell subsets.
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Affiliation(s)
- Jérémy Argenty
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Nelly Rouquié
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Cyrielle Bories
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Suzanne Mélique
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Valérie Duplan-Eche
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Abdelhadi Saoudi
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Nicolas Fazilleau
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Renaud Lesourne
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
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14
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Winkels H, Ghosheh Y, Kobiyama K, Kiosses WB, Orecchioni M, Ehinger E, Suryawanshi V, Herrera-De La Mata S, Marchovecchio P, Riffelmacher T, Thiault N, Kronenberg M, Wolf D, Seumois G, Vijayanand P, Ley K. Thymus-Derived CD4 +CD8 + Cells Reside in Mediastinal Adipose Tissue and the Aortic Arch. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:2720-2732. [PMID: 34740961 PMCID: PMC8612987 DOI: 10.4049/jimmunol.2100208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 09/04/2021] [Indexed: 11/19/2022]
Abstract
Double-positive CD4+CD8αβ+ (DP) cells are thought to reside as T cell progenitors exclusively within the thymus. We recently discovered an unexpected CD4+ and CD8αβ+ immune cell population in healthy and atherosclerotic mice by single-cell RNA sequencing. Transcriptomically, these cells resembled thymic DPs. Flow cytometry and three-dimensional whole-mount imaging confirmed DPs in thymus, mediastinal adipose tissue, and aortic adventitia, but nowhere else. Deep transcriptional profiling revealed differences between DP cells isolated from the three locations. All DPs were dependent on RAG2 expression and the presence of the thymus. Mediastinal adipose tissue DPs resided in close vicinity to invariant NKT cells, which they could activate in vitro. Thymus transplantation failed to reconstitute extrathymic DPs, and frequencies of extrathymic DPs were unaltered by pharmacologic inhibition of S1P1, suggesting that their migration may be locally confined. Our results define two new, transcriptionally distinct subsets of extrathymic DPs that may play a role in aortic vascular homeostasis.
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Affiliation(s)
- Holger Winkels
- La Jolla Institute for Immunology, La Jolla, CA;
- Department of Cardiology, Clinic III for Internal Medicine, University of Cologne, Cologne, Germany
| | | | | | | | | | | | | | | | | | | | | | | | - Dennis Wolf
- University Hospital Freiburg, Freiburg, Germany; and
| | | | | | - Klaus Ley
- La Jolla Institute for Immunology, La Jolla, CA
- Department of Bioengineering, University of California, San Diego, La Jolla, CA
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15
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Torres-Montaner A. The telomere complex and the origin of the cancer stem cell. Biomark Res 2021; 9:81. [PMID: 34736527 PMCID: PMC8567692 DOI: 10.1186/s40364-021-00339-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/21/2021] [Indexed: 11/15/2022] Open
Abstract
Exquisite regulation of telomere length is essential for the preservation of the lifetime function and self-renewal of stem cells. However, multiple oncogenic pathways converge on induction of telomere attrition or telomerase overexpression and these events can by themselves trigger malignant transformation. Activation of NFκB, the outcome of telomere complex damage, is present in leukemia stem cells but absent in normal stem cells and can activate DOT1L which has been linked to MLL-fusion leukemias. Tumors that arise from cells of early and late developmental stages appear to follow two different oncogenic routes in which the role of telomere and telomerase signaling might be differentially involved. In contrast, direct malignant transformation of stem cells appears to be extremely rare. This suggests an inherent resistance of stem cells to cancer transformation which could be linked to a stem cell’specific mechanism of telomere maintenance. However, tumor protection of normal stem cells could also be conferred by cell extrinsic mechanisms.
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Affiliation(s)
- A Torres-Montaner
- Department of Pathology, Queen's Hospital, Rom Valley Way, London, Romford, RM7 OAG, UK. .,Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain.
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16
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New insights into TCR β-selection. Trends Immunol 2021; 42:735-750. [PMID: 34261578 DOI: 10.1016/j.it.2021.06.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 12/12/2022]
Abstract
T cell receptor (TCR) β-selection (herein referred to as β-selection) is a pivotal checkpoint in mammalian T cell development when immature CD4-CD8- T-cells (thymocytes) express pre-TCR following successful Tcrb gene rearrangement. At this stage, αβ T cell lineage commitment and allelic exclusion to restrict one β-chain per cell take place and thymocytes undergo a proliferative burst. β-selection is known to be crucially dependent upon synchronized Notch and pre-TCR signaling; however, other necessary inputs have been identified over the past decade, expanding our knowledge and understanding of the β-selection process. In this review, we discuss recent mechanistic findings that have enabled a more detailed decoding of the molecular dynamics of the β-selection checkpoint and have helped to elucidate its role in early T cell development.
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17
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Liu X, Yu J, Xu L, Umphred-Wilson K, Peng F, Ding Y, Barton BM, Lv X, Zhao MY, Sun S, Hong Y, Qi L, Adoro S, Chen X. Notch-induced endoplasmic reticulum-associated degradation governs mouse thymocyte β-selection. eLife 2021; 10:e69975. [PMID: 34240701 PMCID: PMC8315795 DOI: 10.7554/elife.69975] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/05/2021] [Indexed: 11/13/2022] Open
Abstract
Signals from the pre-T cell receptor and Notch coordinately instruct β-selection of CD4-CD8-double negative (DN) thymocytes to generate αβ T cells in the thymus. However, how these signals ensure a high-fidelity proteome and safeguard the clonal diversification of the pre-selection TCR repertoire given the considerable translational activity imposed by β-selection is largely unknown. Here, we identify the endoplasmic reticulum (ER)-associated degradation (ERAD) machinery as a critical proteostasis checkpoint during β-selection. Expression of the SEL1L-HRD1 complex, the most conserved branch of ERAD, is directly regulated by the transcriptional activity of the Notch intracellular domain. Deletion of Sel1l impaired DN3 to DN4 thymocyte transition and severely impaired mouse αβ T cell development. Mechanistically, Sel1l deficiency induced unresolved ER stress that triggered thymocyte apoptosis through the PERK pathway. Accordingly, genetically inactivating PERK rescued T cell development from Sel1l-deficient thymocytes. In contrast, IRE1α/XBP1 pathway was induced as a compensatory adaptation to alleviate Sel1l-deficiency-induced ER stress. Dual loss of Sel1l and Xbp1 markedly exacerbated the thymic defect. Our study reveals a critical developmental signal controlled proteostasis mechanism that enforces T cell development to ensure a healthy adaptive immunity.
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Affiliation(s)
- Xia Liu
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
| | - Jingjing Yu
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
| | - Longyong Xu
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
| | - Katharine Umphred-Wilson
- Department of Pathology, School of Medicine, Case Western Reserve UniversityClevelandUnited States
| | - Fanglue Peng
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
| | - Yao Ding
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
| | - Brendan M Barton
- Department of Pathology, School of Medicine, Case Western Reserve UniversityClevelandUnited States
| | - Xiangdong Lv
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
| | - Michael Y Zhao
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
| | - Shengyi Sun
- Center for Molecular Medicine and Genetics, Wayne State UniversityDetroitUnited States
| | - Yuning Hong
- Department of Chemistry and Physics, La Trobe UniversityMelbourneAustralia
| | - Ling Qi
- Department of Molecular and Integrative Physiology, University of Michigan Medical SchoolAnn ArborUnited States
| | - Stanley Adoro
- Department of Pathology, School of Medicine, Case Western Reserve UniversityClevelandUnited States
| | - Xi Chen
- Department of Molecular and Cellular Biology, Baylor College of MedicineHoustonUnited States
- Lester and Sue Smith Breast Center and Dan L Duncan Comprehensive Cancer Center, Baylor College of MedicineHoustonUnited States
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18
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Abstract
T cell activation is a critical event in the adaptive immune response, indispensable for cell-mediated and humoral immunity as well as for immune regulation. Recent years have witnessed an emerging trend emphasizing the essential role that physical force and mechanical properties play at the T cell interface. In this review, we integrate current knowledge of T cell antigen recognition and the different models of T cell activation from the perspective of mechanobiology, focusing on the interaction between the T cell receptor (TCR) and the peptide-major histocompatibility complex (pMHC) antigen. We address the shortcomings of TCR affinity alone in explaining T cell functional outcomes and the rising status of force-regulated TCR bond lifetimes, most notably the TCR catch bond. Ultimately, T cell activation and the ensuing physiological responses result from mechanical interaction between TCRs and the pMHC. Expected final online publication date for the Annual Review of Cell and Developmental Biology, Volume 37 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Baoyu Liu
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA; , ,
| | - Elizabeth M Kolawole
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA; , ,
| | - Brian D Evavold
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA; , ,
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19
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Corrado M, Samardžić D, Giacomello M, Rana N, Pearce EL, Scorrano L. Deletion of the mitochondria-shaping protein Opa1 during early thymocyte maturation impacts mature memory T cell metabolism. Cell Death Differ 2021; 28:2194-2206. [PMID: 33649469 PMCID: PMC8257785 DOI: 10.1038/s41418-021-00747-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 07/30/2020] [Accepted: 01/28/2021] [Indexed: 01/31/2023] Open
Abstract
Optic atrophy 1 (OPA1), a mitochondria-shaping protein controlling cristae biogenesis and respiration, is required for memory T cell function, but whether it affects intrathymic T cell development is unknown. Here we show that OPA1 is necessary for thymocyte maturation at the double negative (DN)3 stage when rearrangement of the T cell receptor β (Tcrβ) locus occurs. By profiling mitochondrial function at different stages of thymocyte maturation, we find that DN3 cells rely on oxidative phosphorylation. Consistently, Opa1 deletion during early T cell development impairs respiration of DN3 cells and reduces their number. Opa1-deficient DN3 cells indeed display stronger TCR signaling and are more prone to cell death. The surviving Opa1-/- thymocytes that reach the periphery as mature T cells display an effector memory phenotype even in the absence of antigenic stimulation but are unable to generate metabolically fit long-term memory T cells. Thus, mitochondrial defects early during T cell development affect mature T cell function.
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Affiliation(s)
- Mauro Corrado
- Veneto Institute of Molecular Medicine, Padua, Italy ,grid.429509.30000 0004 0491 4256Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Dijana Samardžić
- Veneto Institute of Molecular Medicine, Padua, Italy ,grid.5608.b0000 0004 1757 3470Department of Biology, University of Padua, Padua, Italy
| | - Marta Giacomello
- grid.5608.b0000 0004 1757 3470Department of Biology, University of Padua, Padua, Italy
| | - Nisha Rana
- grid.429509.30000 0004 0491 4256Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Erika L. Pearce
- grid.429509.30000 0004 0491 4256Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
| | - Luca Scorrano
- Veneto Institute of Molecular Medicine, Padua, Italy ,grid.5608.b0000 0004 1757 3470Department of Biology, University of Padua, Padua, Italy
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20
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The transcription factors GFI1 and GFI1B as modulators of the innate and acquired immune response. Adv Immunol 2021; 149:35-94. [PMID: 33993920 DOI: 10.1016/bs.ai.2021.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
GFI1 and GFI1B are small nuclear proteins of 45 and 37kDa, respectively, that have a simple two-domain structure: The first consists of a group of six c-terminal C2H2 zinc finger motifs that are almost identical in sequence and bind to very similar, specific DNA sites. The second is an N-terminal 20 amino acid SNAG domain that can bind to the pocket of the histone demethylase KDM1A (LSD1) near its active site. When bound to DNA, both proteins act as bridging factors that bring LSD1 and associated proteins into the vicinity of methylated substrates, in particular histone H3 or TP53. GFI1 can also bring methyl transferases such as PRMT1 together with its substrates that include the DNA repair proteins MRE11 and 53BP1, thereby enabling their methylation and activation. While GFI1B is expressed almost exclusively in the erythroid and megakaryocytic lineage, GFI1 has clear biological roles in the development and differentiation of lymphoid and myeloid immune cells. GFI1 is required for lymphoid/myeloid and monocyte/granulocyte lineage decision as well as the correct nuclear interpretation of a number of important immune-signaling pathways that are initiated by NOTCH1, interleukins such as IL2, IL4, IL5 or IL7, by the pre TCR or -BCR receptors during early lymphoid differentiation or by T and B cell receptors during activation of lymphoid cells. Myeloid cells also depend on GFI1 at both stages of early differentiation as well as later stages in the process of activation of macrophages through Toll-like receptors in response to pathogen-associated molecular patterns. The knowledge gathered on these factors over the last decades puts GFI1 and GFI1B at the center of many biological processes that are critical for both the innate and acquired immune system.
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21
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Han J, Zúñiga-Pflücker JC. High-Oxygen Submersion Fetal Thymus Organ Cultures Enable FOXN1-Dependent and -Independent Support of T Lymphopoiesis. Front Immunol 2021; 12:652665. [PMID: 33859647 PMCID: PMC8043069 DOI: 10.3389/fimmu.2021.652665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/15/2021] [Indexed: 01/19/2023] Open
Abstract
T cell development is effectively supported in fetal thymus organ cultures (FTOCs), which places thymus lobes atop an air-liquid interface (ALI) culture system. The direct exposure to air is critical for its success, as fetal thymus lobes placed in low oxygen submersion (LOS)-FTOCs fail to support thymocyte development. However, submersion cultures performed in the presence of high concentration of ambient oxygen (60~80%) allow for normal thymocyte development, but the underlying mechanism for this rescue has remained elusive. Here, we show that FOXN1 expression in thymic epithelial cells (TECs) from LOS-FTOCs was greatly reduced compared to conventional ALI-FTOCs. Consequently, the expression of important FOXN1 target genes, including Dll4 and Ccl25, in TECs was extinguished. The loss of DLL4 and CCL25 interrupted thymocyte differentiation and led to CD4+CD8+ cells exiting the lobes, respectively. High oxygen submersion (HOS)-FTOCs restored the expression of FOXN1 and its target genes, as well as maintained high levels of MHCII expression in TECs. In addition, HOS-FTOCs promoted the self-renewal of CD4−CD8−CD44−CD25+ cells, allowing for the continuous generation of later stage thymocytes. Forced FOXN1 expression in TECs rescued thymocyte developmental progression, but not cellularity, in LOS-FTOCs. Given that oxidative stress has been reported to accelerate the onset of age-associated thymic involution, we postulate that regulation of FOXN1 by oxygen and antioxidants may underpin this biological process.
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Affiliation(s)
- Jianxun Han
- Department of Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Juan Carlos Zúñiga-Pflücker
- Department of Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada
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22
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Allam AH, Charnley M, Pham K, Russell SM. Developing T cells form an immunological synapse for passage through the β-selection checkpoint. J Cell Biol 2021; 220:e201908108. [PMID: 33464309 PMCID: PMC7814350 DOI: 10.1083/jcb.201908108] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/22/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023] Open
Abstract
The β-selection checkpoint of T cell development tests whether the cell has recombined its genomic DNA to produce a functional T cell receptor β (TCRβ). Passage through the β-selection checkpoint requires the nascent TCRβ protein to mediate signaling through a pre-TCR complex. In this study, we show that developing T cells at the β-selection checkpoint establish an immunological synapse in in vitro and in situ, resembling that of the mature T cell. The immunological synapse is dependent on two key signaling pathways known to be critical for the transition beyond the β-selection checkpoint, Notch and CXCR4 signaling. In vitro and in situ analyses indicate that the immunological synapse promotes passage through the β-selection checkpoint. Collectively, these data indicate that developing T cells regulate pre-TCR signaling through the formation of an immunological synapse. This signaling platform integrates cues from Notch, CXCR4, and MHC on the thymic stromal cell to allow transition beyond the β-selection checkpoint.
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Affiliation(s)
- Amr H. Allam
- Optical Sciences Centre, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - Mirren Charnley
- Optical Sciences Centre, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - Kim Pham
- Optical Sciences Centre, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
- Department of Pathology, The University of Melbourne, Australia
| | - Sarah M. Russell
- Optical Sciences Centre, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, Victoria, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
- Department of Pathology, The University of Melbourne, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Australia
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23
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Abstract
Akt kinases translate various external cues into intracellular signals that control cell survival, proliferation, metabolism and differentiation. This review discusses the requirement for Akt and its targets in determining the fate and function of T cells. We discuss the importance of Akt at various stages of T cell development including β-selection during which Akt fulfills the energy requirements of highly proliferative DN3 cells. Akt also plays an integral role in CD8 T cell biology where its regulation of Foxo transcription factors and mTORC1 metabolic activity controls effector versus memory CD8 T cell differentiation. Finally, Akt promotes the differentiation of naïve CD4 T cells into Th1, Th17 and Tfh cells but inhibits the development of Treg cells. We also highlight how modulating Akt in T cells is a promising avenue for enhancing cell-based cancer immunotherapy.
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24
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Rodríguez-Caparrós A, Álvarez-Santiago J, del Valle-Pastor MJ, Suñé C, López-Ros J, Hernández-Munain C. Regulation of T-cell Receptor Gene Expression by Three-Dimensional Locus Conformation and Enhancer Function. Int J Mol Sci 2020; 21:E8478. [PMID: 33187197 PMCID: PMC7696796 DOI: 10.3390/ijms21228478] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/29/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
The adaptive immune response in vertebrates depends on the expression of antigen-specific receptors in lymphocytes. T-cell receptor (TCR) gene expression is exquisitely regulated during thymocyte development to drive the generation of αβ and γδ T lymphocytes. The TCRα, TCRβ, TCRγ, and TCRδ genes exist in two different configurations, unrearranged and rearranged. A correctly rearranged configuration is required for expression of a functional TCR chain. TCRs can take the form of one of three possible heterodimers, pre-TCR, TCRαβ, or TCRγδ which drive thymocyte maturation into αβ or γδ T lymphocytes. To pass from an unrearranged to a rearranged configuration, global and local three dimensional (3D) chromatin changes must occur during thymocyte development to regulate gene segment accessibility for V(D)J recombination. During this process, enhancers play a critical role by modifying the chromatin conformation and triggering noncoding germline transcription that promotes the recruitment of the recombination machinery. The different signaling that thymocytes receive during their development controls enhancer activity. Here, we summarize the dynamics of long-distance interactions established through chromatin regulatory elements that drive transcription and V(D)J recombination and how different signaling pathways are orchestrated to regulate the activity of enhancers to precisely control TCR gene expression during T-cell maturation.
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Affiliation(s)
| | | | | | | | | | - Cristina Hernández-Munain
- Institute of Parasitology and Biomedicine “López-Neyra”—Spanish Scientific Research Council (IPBLN-CSIC), Parque Tecnológico de Ciencias de la Salud (PTS), 18016 Granada, Spain; (A.R.-C.); (J.Á.-S.); (M.J.d.V.-P.); (C.S.); (J.L.-R.)
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25
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Rushdi M, Li K, Yuan Z, Travaglino S, Grakoui A, Zhu C. Mechanotransduction in T Cell Development, Differentiation and Function. Cells 2020; 9:E364. [PMID: 32033255 PMCID: PMC7072571 DOI: 10.3390/cells9020364] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 02/07/2023] Open
Abstract
Cells in the body are actively engaging with their environments that include both biochemical and biophysical aspects. The process by which cells convert mechanical stimuli from their environment to intracellular biochemical signals is known as mechanotransduction. Exemplifying the reliance on mechanotransduction for their development, differentiation and function are T cells, which are central to adaptive immune responses. T cell mechanoimmunology is an emerging field that studies how T cells sense, respond and adapt to the mechanical cues that they encounter throughout their life cycle. Here we review different stages of the T cell's life cycle where existing studies have shown important effects of mechanical force or matrix stiffness on a T cell as sensed through its surface molecules, including modulating receptor-ligand interactions, inducing protein conformational changes, triggering signal transduction, amplifying antigen discrimination and ensuring directed targeted cell killing. We suggest that including mechanical considerations in the immunological studies of T cells would inform a more holistic understanding of their development, differentiation and function.
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Affiliation(s)
- Muaz Rushdi
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.R.); (K.L.); (S.T.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA;
| | - Kaitao Li
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.R.); (K.L.); (S.T.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA;
| | - Zhou Yuan
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA;
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30313, USA
| | - Stefano Travaglino
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.R.); (K.L.); (S.T.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA;
| | - Arash Grakoui
- Emory Vaccine Center, Division of Microbiology and Immunology, Yerkes Research Primate Center, Emory University School of Medicine, Atlanta, GA 30329, USA;
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Cheng Zhu
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.R.); (K.L.); (S.T.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA;
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30313, USA
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26
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Peterson TV, Jaiswal MK, Beaman KD, Reynolds JM. Conditional Deletion of the V-ATPase a2-Subunit Disrupts Intrathymic T Cell Development. Front Immunol 2019; 10:1911. [PMID: 31456807 PMCID: PMC6700305 DOI: 10.3389/fimmu.2019.01911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 07/29/2019] [Indexed: 11/13/2022] Open
Abstract
Proper orchestration of T lymphocyte development is critical, as T cells underlie nearly all responses of the adaptive immune system. Developing thymocytes differentiate in response to environmental cues carried from cell surface receptors to the nucleus, shaping a distinct transcriptional program that defines their developmental outcome. Our recent work has identified a previously undescribed role for the vacuolar ATPase (V-ATPase) in facilitating the development of murine thymocytes progressing toward the CD4+ and CD8+ αβ T cell lineages. Vav1Cre recombinase-mediated deletion of the a2 isoform of the V-ATPase (a2V) in mouse hematopoietic cells leads to a specific and profound loss of peripheral CD4+ and CD8+ αβ T cells. Utilizing T cell-restricted LckCre and CD4Cre strains, we further traced this deficiency to the thymus and found that a2V plays a cell-intrinsic role throughout intrathymic development. Loss of a2V manifests as a partial obstruction in the double negative stage of T cell development, and later, a near complete failure of positive selection. These data deepen our understanding of the biological mechanisms that orchestrate T cell development and lend credence to the recent focus on V-ATPase as a potential chemotherapeutic target to combat proliferative potential in T cell lymphoblastic leukemias and autoimmune disease.
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Affiliation(s)
- Theodore V Peterson
- Center for Cancer Cell Biology, Immunology and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States
| | - Mukesh K Jaiswal
- Center for Cancer Cell Biology, Immunology and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States
| | - Kenneth D Beaman
- Center for Cancer Cell Biology, Immunology and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States
| | - Joseph M Reynolds
- Center for Cancer Cell Biology, Immunology and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States.,Edward Hines, Jr. VA Hospital, Hines, IL, United States
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27
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Notch and the pre-TCR coordinate thymocyte proliferation by induction of the SCF subunits Fbxl1 and Fbxl12. Nat Immunol 2019; 20:1381-1392. [PMID: 31451788 PMCID: PMC6754294 DOI: 10.1038/s41590-019-0469-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 07/16/2019] [Indexed: 01/05/2023]
Abstract
Proliferation is tightly regulated during T cell development and is limited to immature CD4−CD8− thymocytes. The major proliferative event is initiated at the ‘β-selection’ stage following successful rearrangement of Tcrβ and is triggered by and dependent on concurrent signaling by Notch and the pre-TCR; however, it is unclear how these signals cooperate to promote cell proliferation. Here we found that β-selection-associated proliferation required the combined activity of two SCF ubiquitin ligase complexes that included as substrate recognition subunits the F-box proteins Fbxl1 or Fbxl12. Both SCF complexes targeted the cyclin-dependent kinase inhibitor Cdkn1b for ubiquitinylaton and degradation. We found that Notch signals induced the transcription of Fbxl1 whereas pre-TCR signals induced the transcription of Fbxl12. Thus, concurrent Notch and pre-TCR signaling induced the expression of two genes, Fbxl1 and Fbxl12, whose products functioned identically but additively to promote degradation of Cdkn1b, cell cycle progression, and proliferation of β-selected thymocytes.
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28
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Klein F, Mitrovic M, Roux J, Engdahl C, von Muenchow L, Alberti-Servera L, Fehling HJ, Pelczar P, Rolink A, Tsapogas P. The transcription factor Duxbl mediates elimination of pre-T cells that fail β-selection. J Exp Med 2019; 216:638-655. [PMID: 30765463 PMCID: PMC6400535 DOI: 10.1084/jem.20181444] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 12/13/2018] [Accepted: 01/22/2019] [Indexed: 12/13/2022] Open
Abstract
During β-selection, T cells without productive TCRβ rearrangements are eliminated. Klein et al. show that the transcription factor Duxbl regulates this process by inducing apoptosis through activation of the Oas/RNaseL pathway. Successful TCRβ rearrangement rescues cells by pre-TCR–mediated Duxbl suppression. T cell development is critically dependent on successful rearrangement of antigen-receptor chains. At the β-selection checkpoint, only cells with a functional rearrangement continue in development. However, how nonselected T cells proceed in their dead-end fate is not clear. We identified low CD27 expression to mark pre-T cells that have failed to rearrange their β-chain. Expression profiling and single-cell transcriptome clustering identified a developmental trajectory through β-selection and revealed specific expression of the transcription factor Duxbl at a stage of high recombination activity before β-selection. Conditional transgenic expression of Duxbl resulted in a developmental block at the DN3-to-DN4 transition due to reduced proliferation and enhanced apoptosis, whereas RNA silencing of Duxbl led to a decrease in apoptosis. Transcriptome analysis linked Duxbl to elevated expression of the apoptosis-inducing Oas/RNaseL pathway. RNaseL deficiency or sustained Bcl2 expression led to a partial rescue of cells in Duxbl transgenic mice. These findings identify Duxbl as a regulator of β-selection by inducing apoptosis in cells with a nonfunctional rearrangement.
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Affiliation(s)
- Fabian Klein
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Mladen Mitrovic
- Immune Regulation, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Julien Roux
- Bioinformatics Core Facility, Department of Biomedicine, University of Basel, Basel, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Corinne Engdahl
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Lilly von Muenchow
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Llucia Alberti-Servera
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | | | - Pawel Pelczar
- Center for Transgenic Models, University of Basel, Basel, Switzerland
| | - Antonius Rolink
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Panagiotis Tsapogas
- Developmental and Molecular Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
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29
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The multifaceted role of Notch signal in regulating T cell fate. Immunol Lett 2019; 206:59-64. [PMID: 30629981 DOI: 10.1016/j.imlet.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/28/2018] [Accepted: 01/05/2019] [Indexed: 11/22/2022]
Abstract
Notch signaling pathway facilitates important cellular functions of the host. Notch signal is essential for the development of T cells, and the role of Notch in fine tuning of αβ versus γδ T cell lineage commitment is fundamentally different in mice and human. The Notch family of cell surface receptor likewise plays a critical role in regulating T cell activation, and influences T cell response both intrinsically and through the local environment. In this review, we take an overview of Notch signaling pathway and also emphasize the role of Notch signal in T cell lineage differentiation and activating effector function of peripheral T cells.
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30
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Charnley M, Ludford-Menting M, Pham K, Russell SM. A new role for Notch in the control of polarity and asymmetric cell division of developing T cells. J Cell Sci 2019; 133:jcs.235358. [DOI: 10.1242/jcs.235358] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/20/2019] [Indexed: 12/28/2022] Open
Abstract
A fundamental question in biology is how single cells can reliably produce progeny of different cell types. Notch signalling frequently facilitates fate determination. Asymmetric cell division (ACD) often controls segregation of Notch signalling by imposing unequal inheritance of regulators of Notch. Here, we assessed the functional relationship between Notch and ACD in mouse T cell development. To attain immunological specificity, developing T cells must pass through a pivotal stage termed β-selection, which involves Notch signalling and ACD. We assessed functional interactions between Notch1 and ACD during β-selection using direct presentation of Notch ligands, DL1 and DL4, and pharmacological inhibition of Notch signalling. Contrary to prevailing models, we demonstrate that Notch controls the distribution of Notch1 itself and cell fate determinants, α-Adaptin and Numb. Further, Notch and CXCR4 signalling cooperated to drive polarity during division. Thus, Notch signalling directly orchestrates ACD, and Notch1 is differentially inherited by sibling cells.
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Affiliation(s)
- Mirren Charnley
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Biointerface Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria 3000, Australia
| | - Mandy Ludford-Menting
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria 3000, Australia
| | - Kim Pham
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria 3000, Australia
- Department of Pathology, The University of Melbourne, Parkville, Victoria 3010, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Sarah M. Russell
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Parkville, Victoria 3000, Australia
- Department of Pathology, The University of Melbourne, Parkville, Victoria 3010, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3010, Australia
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31
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Zuberbuehler MK, Parker ME, Wheaton JD, Espinosa JR, Salzler HR, Park E, Ciofani M. The transcription factor c-Maf is essential for the commitment of IL-17-producing γδ T cells. Nat Immunol 2018; 20:73-85. [PMID: 30538336 PMCID: PMC6294311 DOI: 10.1038/s41590-018-0274-0] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 11/06/2018] [Indexed: 12/14/2022]
Abstract
γδ T cells that produce the cytokine IL-17 (Tγδ17 cells) are innate-like mediators of immunity that undergo effector programming in the thymus. While regulators of Tγδ17 specialization restricted to various Vγ subsets are known, a commitment factor essential to all Tγδ17 cells has remained undefined. In this study, we identified c-Maf as a universal regulator for Tγδ17 cell differentiation and maintenance. Maf deficiency caused an absolute lineage block at the immature CD24+CD45RBlo γδ thymocyte stage, which revealed a critical checkpoint in the acquisition of effector functions. Here, c-Maf enforced Tγδ17 cell identity by promoting chromatin accessibility and expression of key type 17 program genes, notably Rorc and Blk, while antagonizing the transcription factor TCF1, which promotes IFN-γ-producing γδ T cells (Tγδ1 cells). Furthermore, γδ T cell antigen receptor (γδTCR) signal strength tuned c-Maf expression, which indicates that c-Maf is a core node connecting γδTCR signals to Tγδ17 cell transcriptional programming.
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Affiliation(s)
| | - Morgan E Parker
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - Joshua D Wheaton
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - Jaclyn R Espinosa
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - Harmony R Salzler
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - Eunchong Park
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - Maria Ciofani
- Department of Immunology, Duke University Medical Center, Durham, NC, USA.
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32
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Stage-specific roles for Zmiz1 in Notch-dependent steps of early T-cell development. Blood 2018; 132:1279-1292. [PMID: 30076146 DOI: 10.1182/blood-2018-02-835850] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/29/2018] [Indexed: 12/15/2022] Open
Abstract
Notch1 signaling must elevate to high levels in order to drive the proliferation of CD4-CD8- double-negative (DN) thymocytes and progression to the CD4+CD8+ double-positive (DP) stage through β-selection. During this critical phase of pre-T-cell development, which is also known as the DN-DP transition, it is unclear whether the Notch1 transcriptional complex strengthens its signal output as a discrete unit or through cofactors. We previously showed that the protein inhibitor of activated STAT-like coactivator Zmiz1 is a context-dependent cofactor of Notch1 in T-cell leukemia. We also showed that withdrawal of Zmiz1 generated an early T-lineage progenitor (ETP) defect. Here, we show that this early defect seems inconsistent with loss-of-Notch1 function. In contrast, at the later pre-T-cell stage, withdrawal of Zmiz1 impaired the DN-DP transition by inhibiting proliferation, like withdrawal of Notch. In pre-T cells, but not ETPs, Zmiz1 cooperatively regulated Notch1 target genes Hes1, Lef1, and Myc. Enforced expression of either activated Notch1 or Myc partially rescued the Zmiz1-deficient DN-DP defect. We identified residues in the tetratricopeptide repeat (TPR) domain of Zmiz1 that bind Notch1. Mutating only a single residue impaired the Zmiz1-Notch1 interaction, Myc induction, the DN-DP transition, and leukemic proliferation. Similar effects were seen using a dominant-negative TPR protein. Our studies identify stage-specific roles of Zmiz1. Zmiz1 is a context-specific cofactor for Notch1 during Notch/Myc-dependent thymocyte proliferation, whether normal or malignant. Finally, we highlight a vulnerability in leukemic cells that originated from a developmentally important Zmiz1-Notch1 interaction that is hijacked during transformation from normal pre-T cells.
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33
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Zarin P, In TS, Chen EL, Singh J, Wong GW, Mohtashami M, Wiest DL, Anderson MK, Zúñiga-Pflücker JC. Integration of T-cell receptor, Notch and cytokine signals programs mouse γδ T-cell effector differentiation. Immunol Cell Biol 2018; 96:994-1007. [PMID: 29754419 PMCID: PMC6197911 DOI: 10.1111/imcb.12164] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/05/2018] [Accepted: 05/06/2018] [Indexed: 01/08/2023]
Abstract
γδ T‐cells perform a wide range of tissue‐ and disease‐specific functions that are dependent on the effector cytokines produced by these cells. However, the aggregate signals required for the development of interferon‐γ (IFNγ) and interleukin‐17 (IL‐17) producing γδ T‐cells remain unknown. Here, we define the cues involved in the functional programming of γδ T‐cells, by examining the roles of T‐cell receptor (TCR), Notch, and cytokine‐receptor signaling. KN6 γδTCR‐transduced Rag2−/− T‐cell progenitors were cultured on stromal cells variably expressing TCR and Notch ligands, supplemented with different cytokines. We found that distinct combinations of these signals are required to program IFNγ versus IL‐17 producing γδ T‐cell subsets, with Notch and weak TCR ligands optimally enabling development of γδ17 cells in the presence of IL‐1β, IL‐21 and IL‐23. Notably, these cytokines were also shown to be required for the intrathymic development of γδ17 cells. Together, this work provides a framework of how signals downstream of TCR, Notch and cytokine receptors integrate to program the effector function of IFNγ and IL‐17 producing γδ T‐cell subsets.
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Affiliation(s)
- Payam Zarin
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Tracy Sh In
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Edward Ly Chen
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Jastaranpreet Singh
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Gladys W Wong
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Mahmood Mohtashami
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - David L Wiest
- Blood Cell Development and Cancer Keystone, Immune Cell Development and Host Defense Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA, 19111-2497, USA
| | - Michele K Anderson
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Juan Carlos Zúñiga-Pflücker
- Department of Immunology, University of Toronto, and Sunnybrook Research Institute, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
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34
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Elich M, Sauer K. Regulation of Hematopoietic Cell Development and Function Through Phosphoinositides. Front Immunol 2018; 9:931. [PMID: 29780388 PMCID: PMC5945867 DOI: 10.3389/fimmu.2018.00931] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/16/2018] [Indexed: 01/01/2023] Open
Abstract
One of the most paramount receptor-induced signal transduction mechanisms in hematopoietic cells is production of the lipid second messenger phosphatidylinositol(3,4,5)trisphosphate (PIP3) by class I phosphoinositide 3 kinases (PI3K). Defective PIP3 signaling impairs almost every aspect of hematopoiesis, including T cell development and function. Limiting PIP3 signaling is particularly important, because excessive PIP3 function in lymphocytes can transform them and cause blood cancers. Here, we review the key functions of PIP3 and related phosphoinositides in hematopoietic cells, with a special focus on those mechanisms dampening PIP3 production, turnover, or function. Recent studies have shown that beyond “canonical” turnover by the PIP3 phosphatases and tumor suppressors phosphatase and tensin homolog (PTEN) and SH2 domain-containing inositol-5-phosphatase-1 (SHIP-1/2), PIP3 function in hematopoietic cells can also be dampened through antagonism with the soluble PIP3 analogs inositol(1,3,4,5)tetrakisphosphate (IP4) and inositol-heptakisphosphate (IP7). Other evidence suggests that IP4 can promote PIP3 function in thymocytes. Moreover, IP4 or the kinases producing it limit store-operated Ca2+ entry through Orai channels in B cells, T cells, and neutrophils to control cell survival and function. We discuss current models for how soluble inositol phosphates can have such diverse functions and can govern as distinct processes as hematopoietic stem cell homeostasis, neutrophil macrophage and NK cell function, and development and function of B cells and T cells. Finally, we will review the pathological consequences of dysregulated IP4 activity in immune cells and highlight contributions of impaired inositol phosphate functions in disorders such as Kawasaki disease, common variable immunodeficiency, or blood cancer.
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Affiliation(s)
- Mila Elich
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, CA, United States
| | - Karsten Sauer
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States.,Oncology R&D, Pfizer Worldwide R&D, San Diego, CA, United States
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35
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Abstract
Notch drives critical decisions in a multitude of developmental decisions in many invertebrate and vertebrate organisms including flies, worms, fish, mice and humans. Therefore, it is not surprising that Notch family members also play a key role in cell fate choices in the vertebrate immune system. This review highlights the critical function of Notch in the development of mature T lymphocytes from hematopoietic precursors and describes the role of Notch in mature T cell activation, proliferation and differentiation.
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36
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Pike KA, Hatzihristidis T, Bussières-Marmen S, Robert F, Desai N, Miranda-Saavedra D, Pelletier J, Tremblay ML. TC-PTP regulates the IL-7 transcriptional response during murine early T cell development. Sci Rep 2017; 7:13275. [PMID: 29038451 PMCID: PMC5643372 DOI: 10.1038/s41598-017-13673-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 09/27/2017] [Indexed: 01/02/2023] Open
Abstract
Cytokines play a critical role in directing the discrete and gradual transcriptional changes that define T cell development. The interleukin-7 receptor (IL-7R), via its activation of the JAK-STAT pathway, promotes gene programs that change dynamically as cells progress through T cell differentiation. The molecular mechanism(s) directing differential gene expression downstream of the IL-7R are not fully elucidated. Here, we have identified T cell protein tyrosine phosphatase (TC-PTP), also known as PTPN2, as a negative regulator of IL-7R-STAT signaling in T cell progenitors, contributing to both the quantitative and qualitative nature of STAT-gene targeting. Novel genetic strategies used to modulate TC-PTP expression demonstrate that depletion of TC-PTP expression heightens the phosphorylation of STAT family members, causing aberrant expression of an interferon-response gene profile. Such molecular re-programming results in deregulation of early development checkpoints culminating in inefficient differentiation of CD4+CD8+ double positive cells. TC-PTP is therefore shown to be required to safeguard the dynamic transcriptome necessary for efficient T cell differentiation.
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Affiliation(s)
- K A Pike
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada
| | - T Hatzihristidis
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada.,Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada
| | - S Bussières-Marmen
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada.,Department of Biochemistry, McGill University, Montréal, QC H3A 1A3, Canada
| | - F Robert
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada
| | - N Desai
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada.,Department of Biochemistry, McGill University, Montréal, QC H3A 1A3, Canada
| | - D Miranda-Saavedra
- Centro de Biología Molecular Severo Ochoa, CSIC/Universidad Autónoma de Madrid, 28049, Madrid, Spain.,Department of Computer Science, University of Oxford, Wolfson Building Parks Road, OXFORD, OX1 3QD, UK
| | - J Pelletier
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada.,Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada
| | - M L Tremblay
- Rosalind and Morris Goodman Cancer Centre, McGill University, Montréal, QC H3A 1A3, Canada. .,Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada. .,Department of Biochemistry, McGill University, Montréal, QC H3A 1A3, Canada.
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37
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Passaro D, Quang CT, Ghysdael J. Microenvironmental cues for T-cell acute lymphoblastic leukemia development. Immunol Rev 2016; 271:156-72. [PMID: 27088913 DOI: 10.1111/imr.12402] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Intensive chemotherapy regimens have led to a substantial improvement in the cure rate of patients suffering from T-cell acute lymphoblastic leukemia (T-ALL). Despite this progress, about 15% and 50% of pediatric and adult cases, respectively, show resistance to treatment or relapse with dismal prognosis, calling for further therapeutic investigations. T-ALL is an heterogeneous disease, which presents intrinsic alterations leading to aberrant expression of transcription factors normally involved in hematopoietic stem/progenitor cell development and mutations in genes implicated in the regulation of cell cycle progression, apoptosis, and T-cell development. Gene expression profiling allowed the classification of T-ALL into defined molecular subgroups that mostly reflects the stage of their differentiation arrest. So far this knowledge has not translated into novel, targeted therapy. Recent evidence points to the importance of extrinsic signaling cues in controlling the ability of T-ALL to home, survive, and proliferate, thus offering the perspective of new therapeutic options. This review summarizes the present understanding of the interactions between hematopoietic cells and bone marrow/thymic niches during normal hematopoiesis, describes the main signaling pathways implicated in this dialog, and finally highlights how malignant T cells rely on specific niches to maintain their ability to sustain and propagate leukemia.
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Affiliation(s)
- Diana Passaro
- Hematopoietic Stem Cell Laboratory, The Francis Crick Institute, Lincoln's Inn Fields Laboratories, London, UK
| | - Christine Tran Quang
- Institut Curie, Centre Universitaire, Orsay, France.,Centre National de la Recherche Scientifique, Centre Universitaire, Orsay, France
| | - Jacques Ghysdael
- Institut Curie, Centre Universitaire, Orsay, France.,Centre National de la Recherche Scientifique, Centre Universitaire, Orsay, France
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38
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Swamy M, Pathak S, Grzes KM, Damerow S, Sinclair LV, van Aalten DMF, Cantrell DA. Glucose and glutamine fuel protein O-GlcNAcylation to control T cell self-renewal and malignancy. Nat Immunol 2016; 17:712-20. [PMID: 27111141 PMCID: PMC4900450 DOI: 10.1038/ni.3439] [Citation(s) in RCA: 238] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 03/15/2016] [Indexed: 12/14/2022]
Abstract
Sustained glucose and glutamine transport are essential for activated T lymphocytes to support ATP and macromolecule biosynthesis. We now show that glutamine and glucose also fuel an indispensible dynamic regulation of intracellular protein O-GlcNAcylation at key stages of T cell development, transformation and differentiation. Glucose and glutamine are precursors of UDP-GlcNAc, a substrate for cellular glycosyltransferases. Immune activated T cells contained higher concentrations of UDP-GlcNAc and increased intracellular protein O-GlcNAcylation controlled by the enzyme O-GlcNAc glycosyltransferase as compared to naïve cells. We identified Notch, the T cell antigen receptor and c-Myc as key controllers of T cell protein O-GlcNAcylation, via regulation of glucose and glutamine transport. Loss of O-GlcNAc transferase blocked T cell progenitor renewal, malignant transformation, and peripheral T cell clonal expansion. Nutrient-dependent signaling pathways regulated by O-GlcNAc glycosyltransferase are thus fundamental for T cell biology.
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Affiliation(s)
- Mahima Swamy
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
| | - Shalini Pathak
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
| | - Katarzyna M Grzes
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
| | - Sebastian Damerow
- Division of Biological Chemistry and Drug Discovery, University of Dundee, Dundee, UK
| | - Linda V Sinclair
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
| | - Daan M F van Aalten
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee, UK
| | - Doreen A Cantrell
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, UK
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39
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Westernberg L, Conche C, Huang YH, Rigaud S, Deng Y, Siegemund S, Mukherjee S, Nosaka L, Das J, Sauer K. Non-canonical antagonism of PI3K by the kinase Itpkb delays thymocyte β-selection and renders it Notch-dependent. eLife 2016; 5. [PMID: 26880557 PMCID: PMC4764578 DOI: 10.7554/elife.10786] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 01/08/2016] [Indexed: 12/22/2022] Open
Abstract
β-selection is the most pivotal event determining αβ T cell fate. Here, surface-expression of a pre-T cell receptor (pre-TCR) induces thymocyte metabolic activation, proliferation, survival and differentiation. Besides the pre-TCR, β-selection also requires co-stimulatory signals from Notch receptors - key cell fate determinants in eukaryotes. Here, we show that this Notch-dependence is established through antagonistic signaling by the pre-TCR/Notch effector, phosphoinositide 3-kinase (PI3K), and by inositol-trisphosphate 3-kinase B (Itpkb). Canonically, PI3K is counteracted by the lipid-phosphatases Pten and Inpp5d/SHIP-1. In contrast, Itpkb dampens pre-TCR induced PI3K/Akt signaling by producing IP4, a soluble antagonist of the Akt-activating PI3K-product PIP3. Itpkb-/- thymocytes are pre-TCR hyperresponsive, hyperactivate Akt, downstream mTOR and metabolism, undergo an accelerated β-selection and can develop to CD4+CD8+ cells without Notch. This is reversed by inhibition of Akt, mTOR or glucose metabolism. Thus, non-canonical PI3K-antagonism by Itpkb restricts pre-TCR induced metabolic activation to enforce coincidence-detection of pre-TCR expression and Notch-engagement. DOI:http://dx.doi.org/10.7554/eLife.10786.001 T cells defend our body against cancer and infectious agents such as viruses. However, they can also cause rheumatoid arthritis and other autoimmune diseases by attacking healthy tissue. T cells recognize target cells via receptor proteins on their surface. To maximize the variety of infections and cancers our immune system can recognize, we generate millions of T cells with different T cell receptors every day. To ensure T cells work correctly, T cell receptors are tested at various checkpoints. The first checkpoint involves a process called beta (β) selection, during which T cells produce their first T cell receptor – the so-called pre-T cell receptor. This receptor causes T cells to divide and mature, and sets their future identity or “fate”. To complete β-selection, T cells must also receive signals from another surface receptor – one that belongs to the Notch family, which determines cell fate in many different tissues. The Notch receptor and the pre-T cell receptor both activate an enzyme called PI3K – a key mediator of β-selection. But the pre-T cell receptor also activates another enzyme called Itpkb that is required for T cell development. Westernberg, Conche et al. have now investigated how these different proteins and signaling processes work and interact during β-selection, using mice that lack several immune genes, including the gene that produces Itpkb. The results of the experiments show that during β-selection, Itpkb limits the ability of PI3K to activate some of its key target proteins. This “dampened” PI3K signaling ensures that both the pre-T cell receptor and the Notch receptor must be activated to trigger T cell maturation. Without Itpkb, β-selection can occur in the absence of Notch signaling. As Notch signaling is important for determining the fate of many different cell types, Westernberg, Conche et al.’s findings raise the possibility that Itpkb might also regulate cell fate determination in other tissues. Moreover, Itpkb may suppress tumor development, because excessive PI3K signaling drives many cancers. DOI:http://dx.doi.org/10.7554/eLife.10786.002
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Affiliation(s)
- Luise Westernberg
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Claire Conche
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Yina Hsing Huang
- Department of Pathology, Geisel School of Medicine, Lebanon, United States.,Departments of Microbiology and Immunology, Geisel School of Medicine, Lebanon, United States
| | - Stephanie Rigaud
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Yisong Deng
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Sabine Siegemund
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Sayak Mukherjee
- Department of Pediatrics, The Ohio State University, Columbus, United States.,Department of Physics, The Ohio State University, Columbus, United States.,Battelle Center for Mathematical Medicine, The Ohio State University, Columbus, United States
| | - Lyn'Al Nosaka
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States
| | - Jayajit Das
- Department of Pediatrics, The Ohio State University, Columbus, United States.,Department of Physics, The Ohio State University, Columbus, United States.,Battelle Center for Mathematical Medicine, The Ohio State University, Columbus, United States
| | - Karsten Sauer
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, United States.,Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, United States
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40
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Chen L, Foreman DP, Sant'Angelo DB, Krangel MS. Yin Yang 1 Promotes Thymocyte Survival by Downregulating p53. THE JOURNAL OF IMMUNOLOGY 2016; 196:2572-82. [PMID: 26843327 DOI: 10.4049/jimmunol.1501916] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 01/07/2016] [Indexed: 12/13/2022]
Abstract
Yin Yang 1 (YY1) is a zinc finger protein that functions as a transcriptional activator or repressor and participates in multiple biological processes, including development and tumorigenesis. To investigate the role of YY1 in developing T cells, we used mouse models that depleted YY1 at two distinct stages of thymocyte development. When YY1 was depleted in CD4(-)CD8(-) double-negative thymocytes, development to the CD4(+)CD8(+) double-positive stage was impaired, due to increased apoptosis that prevented expansion of post-β-selection thymocytes. When YY1 was depleted in double-positive thymocytes, they underwent increased cell-autonomous apoptosis in vitro and displayed a shorter lifespan in vivo, as judged by their ability to undergo secondary Vα-to-Jα recombination. Mechanistically, we found that the increased apoptosis in YY1-deficient thymocytes was attributed to overexpression of p53, because concurrent loss of p53 completely rescued the developmental defects of YY1-deficient thymocytes. These results indicated that YY1 functions as a critical regulator of thymocyte survival and that it does so by suppressing the expression of p53.
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Affiliation(s)
- Liang Chen
- Department of Immunology, Duke University Medical Center, Durham, NC 27710; and
| | - Daniel P Foreman
- Department of Immunology, Duke University Medical Center, Durham, NC 27710; and
| | - Derek B Sant'Angelo
- Child Health Institute of New Jersey, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901
| | - Michael S Krangel
- Department of Immunology, Duke University Medical Center, Durham, NC 27710; and
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41
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Anaplastic large cell lymphoma arises in thymocytes and requires transient TCR expression for thymic egress. Nat Commun 2016; 7:10087. [PMID: 26753883 PMCID: PMC4729925 DOI: 10.1038/ncomms10087] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/02/2015] [Indexed: 01/16/2023] Open
Abstract
Anaplastic large cell lymphoma (ALCL) is a peripheral T-cell lymphoma presenting mostly in children and young adults. The natural progression of this disease is largely unknown as is the identity of its true cell of origin. Here we present a model of peripheral ALCL pathogenesis where the malignancy is initiated in early thymocytes, before T-cell receptor (TCR) β-rearrangement, which is bypassed in CD4/NPM–ALK transgenic mice following Notch1 expression. However, we find that a TCR is required for thymic egress and development of peripheral murine tumours, yet this TCR must be downregulated for T-cell lymphomagenesis. In keeping with this, clonal TCR rearrangements in human ALCL are predominantly in-frame, but often aberrant, with clonal TCRα but no comparable clonal TCRβ rearrangement, yielding events that would not normally be permissive for survival during thymic development. Children affected by ALCL may thus harbour thymic lymphoma-initiating cells capable of seeding relapse after chemotherapy. Anaplastic large cell lymphoma is characterized by an NPM–ALK fusion but the cell of origin for this cancer is unclear. Here, the authors show that, in an NPM–ALK mouse model, the tumours likely arise from early thmyocytes and require an initial burst of TCR signalling for initiation.
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42
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Pham K, Shimoni R, Charnley M, Ludford-Menting MJ, Hawkins ED, Ramsbottom K, Oliaro J, Izon D, Ting SB, Reynolds J, Lythe G, Molina-Paris C, Melichar H, Robey E, Humbert PO, Gu M, Russell SM. Asymmetric cell division during T cell development controls downstream fate. J Cell Biol 2015; 210:933-50. [PMID: 26370500 PMCID: PMC4576854 DOI: 10.1083/jcb.201502053] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
T cell precursors undergo asymmetric cell division after T cell receptor genomic recombination, with stromal cell cues controlling the differential inheritance of fate determinants Numb and α-Adaptin by the daughters of a dividing DN3a T cell precursor. During mammalian T cell development, the requirement for expansion of many individual T cell clones, rather than merely expansion of the entire T cell population, suggests a possible role for asymmetric cell division (ACD). We show that ACD of developing T cells controls cell fate through differential inheritance of cell fate determinants Numb and α-Adaptin. ACD occurs specifically during the β-selection stage of T cell development, and subsequent divisions are predominantly symmetric. ACD is controlled by interaction with stromal cells and chemokine receptor signaling and uses a conserved network of polarity regulators. The disruption of polarity by deletion of the polarity regulator, Scribble, or the altered inheritance of fate determinants impacts subsequent fate decisions to influence the numbers of DN4 cells arising after the β-selection checkpoint. These findings indicate that ACD enables the thymic microenvironment to orchestrate fate decisions related to differentiation and self-renewal.
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Affiliation(s)
- Kim Pham
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Raz Shimoni
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Mirren Charnley
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia Industrial Research Institute Swinburne, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Mandy J Ludford-Menting
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Edwin D Hawkins
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia
| | - Kelly Ramsbottom
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia
| | - Jane Oliaro
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - David Izon
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria 3065, Australia
| | - Stephen B Ting
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia
| | - Joseph Reynolds
- Department of Applied Mathematics, School of Mathematics, University of Leeds, Leeds LS2 9JT, England, UK
| | - Grant Lythe
- Department of Applied Mathematics, School of Mathematics, University of Leeds, Leeds LS2 9JT, England, UK
| | - Carmen Molina-Paris
- Department of Applied Mathematics, School of Mathematics, University of Leeds, Leeds LS2 9JT, England, UK
| | - Heather Melichar
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
| | - Ellen Robey
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
| | - Patrick O Humbert
- Cell Cycle and Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Department of Pathology, University of Melbourne, Parkville, Victoria 3010, Australia Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria 3010, Australia Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Min Gu
- Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Sarah M Russell
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia Centre for Micro-Photonics, Faculty of Science, Engineering, and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia Department of Pathology, University of Melbourne, Parkville, Victoria 3010, Australia Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria 3010, Australia
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43
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Buck MD, O'Sullivan D, Pearce EL. T cell metabolism drives immunity. ACTA ACUST UNITED AC 2015; 212:1345-60. [PMID: 26261266 PMCID: PMC4548052 DOI: 10.1084/jem.20151159] [Citation(s) in RCA: 844] [Impact Index Per Article: 93.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 07/16/2015] [Indexed: 12/13/2022]
Abstract
Buck et al. discuss the role of lymphocyte metabolism on immune cell development and function. Lymphocytes must adapt to a wide array of environmental stressors as part of their normal development, during which they undergo a dramatic metabolic remodeling process. Research in this area has yielded surprising findings on the roles of diverse metabolic pathways and metabolites, which have been found to regulate lymphocyte signaling and influence differentiation, function and fate. In this review, we integrate the latest findings in the field to provide an up-to-date resource on lymphocyte metabolism.
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Affiliation(s)
- Michael D Buck
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - David O'Sullivan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Erika L Pearce
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
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44
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Hu Z, Lancaster JN, Ehrlich LIR. The Contribution of Chemokines and Migration to the Induction of Central Tolerance in the Thymus. Front Immunol 2015; 6:398. [PMID: 26300884 PMCID: PMC4528182 DOI: 10.3389/fimmu.2015.00398] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 07/20/2015] [Indexed: 02/01/2023] Open
Abstract
As T cells develop, they migrate throughout the thymus where they undergo essential bi-directional signaling with stromal cells in distinct thymic microenvironments. Immature thymocyte progenitors are located in the thymic cortex. Following T cell receptor expression and positive selection, thymocytes undergo a dramatic transition: they become rapidly motile and relocate to the thymic medulla. Antigen-presenting cells (APCs) within the cortex and medulla display peptides derived from a wide array of self-proteins, which promote thymocyte self-tolerance. If a thymocyte is auto-reactive against such antigens, it undergoes either negative selection, via apoptosis, or differentiation into the regulatory T cell lineage. This induction of central tolerance is critical for prevention of autoimmunity. Chemokines and adhesion molecules play an essential role in tolerance induction, as they promote migration of developing thymocytes through the different thymic microenvironments and enhance interactions with APCs displaying self-antigens. Herein, we review the contribution of chemokines and other regulators of thymocyte localization and motility to T cell development, with a focus on their contribution to the induction of central tolerance.
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Affiliation(s)
- Zicheng Hu
- Ehrlich Laboratory, Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin , Austin, TX , USA
| | - Jessica Naomi Lancaster
- Ehrlich Laboratory, Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin , Austin, TX , USA
| | - Lauren I R Ehrlich
- Ehrlich Laboratory, Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin , Austin, TX , USA
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45
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Hernández-Munain C. Recent insights into the transcriptional control of the Tcra/Tcrd locus by distant enhancers during the development of T-lymphocytes. Transcription 2015; 6:65-73. [PMID: 26230488 DOI: 10.1080/21541264.2015.1078429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Tcra/Tcrd includes 2 genes with distinct developmental programs controlled by 2 distant enhancers, Eα and Eδ. These enhancers work as a developmental switch during thymocyte development and they are essential for generation of αβ and γδ T-lymphocytes. Tcra and Tcrd transit from an unrearranged configuration to a rearranged configuration during T-cell development. Eα and Eδ are responsible for transcription of their respective unrearranged genes in thymocytes but are dispensable for such functions in the context of the rearranged genes in mature T-cells. Interestingly, Eα activates transcription of the rearranged Tcrd in γδ T-lymphocytes but it is inactive in αβ T-lymphocytes.
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Affiliation(s)
- Cristina Hernández-Munain
- a Department of Cellular Biology and Immunology ; Instituto de Parasitología y Biomedicina López-Neyra (IPBLN-CSIC); Parque Tecnológico de Ciencias de la Salud (PTS) ; Armilla , Granada , Spain
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46
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Abstract
The thymus is an essential organ for the generation of the adaptive immune system. By now, the cellular selection events taking place in ongoing life before sexual maturity have been worked out even at the molecular level, and thus thymic lymphocyte development represents one of the best-studied systems in mammalian development. Because thymic lymphocyte development involves ample proliferation and generation of new cells, it is not astonishing that the thymus also represents an organ where malignancy can develop. In this Masters of Immunology primer, the development of lymphocytes and the role of intracellular Notch 1 and cyclins in lymphocytic malignancy are reviewed, offering new therapeutic possibilities.
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Affiliation(s)
- Harald von Boehmer
- Author's Affiliations: Harvard Medical School; Dana-Farber Cancer Institute, Boston, Massachusetts; University of Florida, Gainesville, Florida; and University of Munich, Munich, Germany
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47
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Iguchi T, Aoki K, Ikawa T, Taoka M, Taya C, Yoshitani H, Toma-Hirano M, Koiwai O, Isobe T, Kawamoto H, Masai H, Miyatake S. BTB-ZF Protein Znf131 Regulates Cell Growth of Developing and Mature T Cells. THE JOURNAL OF IMMUNOLOGY 2015; 195:982-93. [PMID: 26136427 DOI: 10.4049/jimmunol.1500602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 05/31/2015] [Indexed: 02/01/2023]
Abstract
Many members of the BTB-ZF family have been shown to play important roles in lymphocyte development and function. The role of zinc finger Znf131 (also known as Zbtb35) in T cell lineage was elucidated through the production of mice with floxed allele to disrupt at different stages of development. In this article, we present that Znf131 is critical for T cell development during double-negative to double-positive stage, with which significant cell expansion triggered by the pre-TCR signal is coupled. In mature T cells, Znf131 is required for the activation of effector genes, as well as robust proliferation induced upon TCR signal. One of the cyclin-dependent kinase inhibitors, p21(Cip1) encoded by cdkn1a gene, is one of the targets of Znf131. The regulation of T cell proliferation by Znf131 is in part attributed to its suppression on the expression of p21(Cip1).
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Affiliation(s)
- Tomohiro Iguchi
- Laboratory of Self Defense Gene Regulation, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan; Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
| | - Kazuhisa Aoki
- Laboratory of Self Defense Gene Regulation, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Tomokatsu Ikawa
- Young Chief Investigators Laboratory for Immune Regeneration, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Masato Taoka
- Laboratory of Biochemistry, Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Choji Taya
- Animal Research Division, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Hiroshi Yoshitani
- Laboratory of Self Defense Gene Regulation, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Makiko Toma-Hirano
- Department of Otolaryngology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Osamu Koiwai
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
| | - Toshiaki Isobe
- Laboratory of Biochemistry, Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Hiroshi Kawamoto
- Department of Immunology, Field of Regeneration Control, Institute of Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan; and
| | - Hisao Masai
- Genome Dynamics Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Shoichiro Miyatake
- Laboratory of Self Defense Gene Regulation, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
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48
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Xue G, Zippelius A, Wicki A, Mandala M, Tang F, Massi D, Hemmings BA. Integrated Akt/PKB Signaling in Immunomodulation and Its Potential Role in Cancer Immunotherapy. J Natl Cancer Inst 2015; 107:djv171. [DOI: 10.1093/jnci/djv171] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/22/2015] [Indexed: 12/17/2022] Open
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49
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Hirano KI, Negishi N, Yazawa M, Yagita H, Habu S, Hozumi K. Delta-like 4-mediated Notch signaling is required for early T-cell development in a three-dimensional thymic structure. Eur J Immunol 2015; 45:2252-62. [DOI: 10.1002/eji.201445123] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 05/05/2015] [Accepted: 05/12/2015] [Indexed: 01/11/2023]
Affiliation(s)
- Ken-ichi Hirano
- Department of Immunology; Tokai University School of Medicine; Isehara Kanagawa Japan
| | - Naoko Negishi
- Department of Immunology; Juntendo University School of Medicine; Bunkyo-ku, Tokyo Japan
| | - Masaki Yazawa
- Department of Immunology; Tokai University School of Medicine; Isehara Kanagawa Japan
- Department of Biochemistry; Tokai University; Hiratsuka Kanagawa Japan
| | - Hideo Yagita
- Department of Immunology; Juntendo University School of Medicine; Bunkyo-ku, Tokyo Japan
| | - Sonoko Habu
- Department of Immunology; Juntendo University School of Medicine; Bunkyo-ku, Tokyo Japan
| | - Katsuto Hozumi
- Department of Immunology; Tokai University School of Medicine; Isehara Kanagawa Japan
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Witkowski MT, Cimmino L, Hu Y, Trimarchi T, Tagoh H, McKenzie MD, Best SA, Tuohey L, Willson TA, Nutt SL, Busslinger M, Aifantis I, Smyth GK, Dickins RA. Activated Notch counteracts Ikaros tumor suppression in mouse and human T-cell acute lymphoblastic leukemia. Leukemia 2015; 29:1301-11. [PMID: 25655195 PMCID: PMC4845663 DOI: 10.1038/leu.2015.27] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 01/28/2015] [Accepted: 01/30/2015] [Indexed: 12/13/2022]
Abstract
Activating NOTCH1 mutations occur in ~60% of human T-cell acute lymphoblastic leukemias (T-ALLs), and mutations disrupting the transcription factor IKZF1 (IKAROS) occur in ~5% of cases. To investigate the regulatory interplay between these driver genes, we have used a novel transgenic RNA interference mouse model to produce primary T-ALLs driven by reversible Ikaros knockdown. Restoring endogenous Ikaros expression in established T-ALL in vivo acutely represses Notch1 and its oncogenic target genes including Myc, and in multiple primary leukemias causes disease regression. In contrast, leukemias expressing high levels of endogenous or engineered forms of activated intracellular Notch1 (ICN1) resembling those found in human T-ALL rapidly relapse following Ikaros restoration, indicating that ICN1 functionally antagonizes Ikaros in established disease. Furthermore, we find that IKAROS mRNA expression is significantly reduced in a cohort of primary human T-ALL patient samples with activating NOTCH1/FBXW7 mutations, but is upregulated upon acute inhibition of aberrant NOTCH signaling across a panel of human T-ALL cell lines. These results demonstrate for the first time that aberrant NOTCH activity compromises IKAROS function in mouse and human T-ALL, and provide a potential explanation for the relative infrequency of IKAROS gene mutations in human T-ALL.
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Affiliation(s)
- MT Witkowski
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - L Cimmino
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
- Department of Pathology, NYU School of Medicine, New York, NY, USA
| | - Y Hu
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - T Trimarchi
- Department of Pathology, NYU School of Medicine, New York, NY, USA
| | - H Tagoh
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - MD McKenzie
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - SA Best
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - L Tuohey
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - TA Willson
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - SL Nutt
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
- Molecular Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - M Busslinger
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - I Aifantis
- Department of Pathology, NYU School of Medicine, New York, NY, USA
| | - GK Smyth
- Bioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Mathematics and Statistics, University of Melbourne, Parkville, VIC, Australia
| | - RA Dickins
- Molecular Medicine Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
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