51
|
Forkhead box transcription factors as context-dependent regulators of lymphocyte homeostasis. Nat Rev Immunol 2019; 18:703-715. [PMID: 30177790 DOI: 10.1038/s41577-018-0048-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lymphocytes have evolved to react rapidly and robustly to changes in their local environment by using transient adaptations and by regulating their terminal differentiation programmes. Forkhead box transcription factors (FTFs) can direct leukocyte-specific responses, and their functional diversification promotes a high degree of context-dependent specification. Many, often antagonistic, FTFs have overlapping expression patterns and can thereby compete for binding to the same chromosomal target sequences. Multiple molecular mechanisms also connect extracellular signals to the expression and functionality of specific FTFs and, in this way, fine-tune their activity. Through these diverse mechanisms, FTFs can function as context-dependent rheostats responding to diverse environmental stimuli. Focusing on the various mechanisms by which their functional activity is modulated, as well as on their mechanisms of action, we discuss how specific FTFs control lymphocyte function, allowing for the establishment and maintenance of immune homeostasis.
Collapse
|
52
|
Metabolic coordination of T cell quiescence and activation. Nat Rev Immunol 2019; 20:55-70. [DOI: 10.1038/s41577-019-0203-y] [Citation(s) in RCA: 223] [Impact Index Per Article: 44.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2019] [Indexed: 02/07/2023]
|
53
|
Zhuang T, Liu J, Chen X, Zhang L, Pi J, Sun H, Li L, Bauer R, Wang H, Yu Z, Zhang Q, Tomlinson B, Chan P, Zheng X, Morrisey E, Liu Z, Reilly M, Zhang Y. Endothelial Foxp1 Suppresses Atherosclerosis via Modulation of Nlrp3 Inflammasome Activation. Circ Res 2019; 125:590-605. [PMID: 31318658 DOI: 10.1161/circresaha.118.314402] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
RATIONALE Endothelial dysfunction results in sustained and chronic vascular inflammation, which is central to atherosclerotic diseases. However, transcriptional regulation of vascular endothelial inflammation has not been well clarified. OBJECTIVE This study aims to explore Foxp (forkhead box P) transcription factor 1 in regulation of endothelial homeostasis, atherogenesis, and its mechanisms. METHODS AND RESULTS To assess the importance of Foxp1 in atherosclerosis, Foxp1 expression was analyzed in human coronary artery and mouse artery, and we observed significant downregulation of Foxp1 in atherosclerotic and atherosusceptible endothelium. Endothelial-specific Foxp1 knockout mice (Foxp1ECKO) were bred onto ApoeKO mice to generate endothelial Foxp1-deletion hyperlipidemic model Foxp1ECKO;ApoeKO, which displayed significant increases in atherosclerotic lesion formation in aortas and aortic roots with enhanced monocyte adhesion, migration, and infiltration into the vascular wall and formation of inflammatory lipid-laden macrophages. In contrast, endothelial-specific Foxp1 overexpression mice Foxp1ECTg;ApoeKO exhibited reduced atherosclerotic lesion formation with less monocyte infiltration. Foxp1 was further identified as a gatekeeper of vessel inflammation by direct regulation of endothelial inflammasome components, including Nlrp3 (NLR [nucleotide-binding and leucine-rich repeat immune receptors] family pyrin domain containing 3), caspase-1, and IL (interleukin)-1β. Moreover, endothelial Foxp1 was found to be regulated by Klf2 (Kruppel-like factor 2). Oscillatory shear stress downregulated Foxp1 expression via repressing Klf2 expression in endothelium, and, therefore, promoted endothelial inflammasome activation, leading to atherosclerotic lesion formation. Simvastatin upregulated the reduced expression of Klf2 and Foxp1 in atherosusceptible vascular endothelium and alleviated vascular inflammation contributing to its inhibitory effect in atherosclerosis. CONCLUSIONS These data are the first in vivo experimental validation of an atheroprotective role of endothelial Klf2 and Foxp1, which reveals a Klf2-Foxp1 transcriptional network in endothelial cells as a novel regulator of endothelial inflammasome activation for atherogenesis, therefore, provides opportunities for therapeutic intervention of atherosclerotic diseases and uncovers a novel atheroprotective mechanism for simvastatin.
Collapse
Affiliation(s)
- Tao Zhuang
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Jie Liu
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Xiaoli Chen
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Lin Zhang
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Jingjiang Pi
- Cardiology (J.P., Q.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Huimin Sun
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Li Li
- Cardiovascular Institute, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (L.L.)
| | - Robert Bauer
- Cardiology Division, Department of Medicine (R.B.), Columbia University, New York, NY
| | - Haikun Wang
- Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, China (H.W.)
| | - Zuoren Yu
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Qi Zhang
- Cardiology (J.P., Q.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Brian Tomlinson
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR (B.T.)
| | - Paul Chan
- Division of Cardiology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taiwan (P.C.)
| | - Xiangjian Zheng
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University (X.Z.).,Laboratory of Cardiovascular Signaling, Centenary Institute, and Sydney Medical School, University of Sydney, Sydney, NSW, Australia (X.Z.)
| | - Edward Morrisey
- Department of Cell and Developmental Biology (E.M.), University of Pennsylvania, Philadelphia.,Department of Medicine (E.M.), University of Pennsylvania, Philadelphia.,Penn Cardiovascular Institute (E.M.), University of Pennsylvania, Philadelphia.,Penn Institute for Regenerative Medicine (E.M.), University of Pennsylvania, Philadelphia
| | - Zhongmin Liu
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| | - Muredach Reilly
- Cardiology Division, Department of Medicine and the Irving Institute for Clinical and Translational Research (M.R.), Columbia University, New York, NY
| | - Yuzhen Zhang
- From the Key Laboratory of Arrhythmias of the Ministry of Education of China, Research Center for Translational Medicine (T.Z., J.L., X.C., L.Z., H.S., Z.Y., Z.L., Y.Z.), Shanghai East Hospital, Tongji University School of Medicine, China
| |
Collapse
|
54
|
Merino A, Zhang B, Dougherty P, Luo X, Wang J, Blazar BR, Miller JS, Cichocki F. Chronic stimulation drives human NK cell dysfunction and epigenetic reprograming. J Clin Invest 2019; 129:3770-3785. [PMID: 31211698 DOI: 10.1172/jci125916] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A population of Natural Killer (NK) cells expressing the activating receptor NKG2C and the maturation marker CD57 expands in response to human cytomegalovirus (HCMV) infection. CD3-CD56dimCD57+NKG2C+ NK cells are similar to CD8+ memory T cells with rapid and robust effector function upon re-stimulation, persistence, and epigenetic remodeling of the IFNG locus. Chronic antigen stimulation drives CD8+ memory T cell proliferation while also inducing genome-wide epigenetic reprograming and dysfunction. We hypothesized that chronic stimulation could similarly induce epigenetic reprograming and dysfunction in NK cells. Here we show that chronic stimulation of adaptive NK cells through NKG2C using plate-bound agonistic antibodies in combination with IL-15 drove robust proliferation and activation of CD3-CD56dimCD57+NKG2C+ NK cells while simultaneously inducing high expression of the checkpoint inhibitory receptors LAG-3 and PD-1. Marked induction of checkpoint inhibitory receptors was also observed on the surface of adaptive NK cells co-cultured with HCMV-infected endothelial cells. Chronically stimulated adaptive NK cells were dysfunctional when challenged with tumor targets. These cells exhibited a pattern of epigenetic reprograming, with genome-wide alterations in DNA methylation. Our study has important implications for cancer immunotherapy and suggest that exhausted NK cells could be targeted with inhibitory checkpoint receptor blockade.
Collapse
Affiliation(s)
- Aimee Merino
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Bin Zhang
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Philip Dougherty
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Xianghua Luo
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - Jinhua Wang
- Institute for Health Informatics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Bruce R Blazar
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Jeffrey S Miller
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Frank Cichocki
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| |
Collapse
|
55
|
Dong H, Buckner A, Prince J, Bullock T. Frontline Science: Late CD27 stimulation promotes IL-7Rα transcriptional re-expression and memory T cell qualities in effector CD8 + T cells. J Leukoc Biol 2019; 106:1007-1019. [PMID: 31199542 DOI: 10.1002/jlb.1hi0219-064r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/29/2019] [Accepted: 05/26/2019] [Indexed: 01/12/2023] Open
Abstract
We previously demonstrated that CD27 co-stimulation during a primary CD8+ T-cell response was critical for the expression of IL-7Rα on acute effector CD8+ T cells, providing an essential element in the generation of CD8+ T-cell memory to infectious pathogens. IL-7 plays a critical role in the generation and maintenance of memory CD8+ T cells, and IL-7Rα has been regarded as a functional marker of long-lived memory precursor effector cells. While IL-7Rα is downregulated acutely upon TCR stimulation, the regulation of the emergence of IL-7Rα expressing cells around the peak of primary CD8+ responses is less clear. Re-expression could be a default outcome after withdrawal of TCR stimulation. Alternatively, specific stimuli could actively antagonize the downregulation or promote the recovery of IL-7Rα in Ag-activated CD8+ T cells. By utilizing agonistic mAb and transgenic models, here we show: (1) CD27 stimulation acts directly on CD8+ T cells to enhance IL-7Rα-expressing effectors; (2) CD27 stimulation neither alleviates the downregulation of IL-7Rα upon TCR signaling nor promotes the expansion/survival of IL-7Rα-expressing effectors, but facilitates IL-7Rα re-expression; (3) CD27 stimulation regulates Il7ra mRNA abundance but not protein distribution. Importantly, CD27 stimulation promotes not only IL-7Rα, but also the common γ chain of the receptor and the downstream signaling mediated by pSTAT5. Our results demonstrate a previously unappreciated role of CD27 stimulation as a positive regulator of IL-7Rα during CD8 T-cell responses, provide insights into the mechanistic basis by which CD27 stimulation influences CD8+ T-cell memory differentiation, and highlight the potential of targeting CD27-CD70 axis to enhance IL-7 signaling for antiviral/antitumor immunotherapy.
Collapse
Affiliation(s)
- Han Dong
- Department of Pathology and Human Immune Therapy Center, University of Virginia, Charlottesville, Virginia, 22908, USA
| | - Andrew Buckner
- Department of Pathology and Human Immune Therapy Center, University of Virginia, Charlottesville, Virginia, 22908, USA
| | - Jessica Prince
- Department of Pathology and Human Immune Therapy Center, University of Virginia, Charlottesville, Virginia, 22908, USA
| | - Timothy Bullock
- Department of Pathology and Human Immune Therapy Center, University of Virginia, Charlottesville, Virginia, 22908, USA
| |
Collapse
|
56
|
IL7 receptor signaling in T cells: A mathematical modeling perspective. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2019; 11:e1447. [DOI: 10.1002/wsbm.1447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 01/14/2019] [Accepted: 02/01/2019] [Indexed: 01/05/2023]
|
57
|
Foxp1 is critical for the maintenance of regulatory T-cell homeostasis and suppressive function. PLoS Biol 2019; 17:e3000270. [PMID: 31125332 PMCID: PMC6534289 DOI: 10.1371/journal.pbio.3000270] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 04/30/2019] [Indexed: 12/13/2022] Open
Abstract
Regulatory T (Treg) cells play central roles in maintaining immune homeostasis and self-tolerance. However, the molecular mechanisms underlying Treg cell homeostasis and suppressive function are still not fully understood. Here, we report that the deletion of another P subfamily members of the forkhead box (Foxp) subfamily member Foxp1 in Treg cells led to increased numbers of activated Treg (aTreg) cells at the expense of quiescent Treg cells, and also resulted in impaired Treg suppressive function. Mice with Foxp1-deficient Treg cells developed spontaneous inflammatory disease with age; they also had more severe inflammatory disease in colitis and experimental autoimmune encephalomyelitis (EAE) models. Mechanistically, we found that Foxp1 bound to the conserved noncoding sequence 2 (CNS2) element of the Foxp3 locus and helped maintain Treg suppressive function by stabilizing the Foxp3 expression. Furthermore, we found that Foxp1 and Foxp3 coordinated the regulation of cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) expression levels. Taken together, our study demonstrates that Foxp1 plays critical roles in both maintaining Treg cell quiescence during homeostasis and regulating Treg suppressive function. The transcription factor Foxp3 has been considered as the master regulator of regulatory T cells (Tregs), but this study shows that another Foxp subfamily member, Foxp1, plays important roles in the homeostasis, stability, and suppressor function of Tregs.
Collapse
|
58
|
Guo Z, Tao Y, Yin S, Song Y, Lu X, Li X, Fan Y, Fan X, Xu S, Yang J, Yu Y. The transcription factor Foxp1 regulates the differentiation and function of dendritic cells. Mech Dev 2019; 158:103554. [PMID: 31077741 DOI: 10.1016/j.mod.2019.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/01/2019] [Accepted: 05/07/2019] [Indexed: 01/14/2023]
Abstract
Dendritic cells (DCs) are the sentinels of the immune system and play a critical role in initiating adaptive immune responses against pathogens. As the most powerful antigen presenting cells, DCs are also important in maintaining immune homeostasis and participating in the development of autoimmune diseases. How the maturation and function of DCs is regulated in these conditions and what is the function of various transcription factors is still unclear. In this study, we found that the expression of the transcription factor Foxp1 gradually increased during the maturation of DCs. Then, we constructed a recombinant adenovirus carrying Foxp1-interfering RNA (Ad-simFoxp1) and transfected murine bone marrow-derived DCs in vitro. DCs transfected with Ad-simFoxp1 exhibited markedly lower costimulatory molecules, and decreased cytokines. And Ad-simFoxp1 greatly inhibited mature DC-induced T cell responses. Moreover, in vivo infusion with Ad-simFoxp1-modified DCs significantly delayed the onset of experimental autoimmune encephalomyelitis (EAE). Therefore, adoptive transfection of Ad-simFoxp1 in DCs may be a potential treatment strategy against autoimmune diseases.
Collapse
Affiliation(s)
- Ziyi Guo
- National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China; Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Yijie Tao
- National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Shulei Yin
- National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Yuping Song
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Xiaomin Lu
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Xuesong Li
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Yujuan Fan
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Xiaofang Fan
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China
| | - Sheng Xu
- National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China.
| | - Jialin Yang
- Department of Endocrine, Minhang Hospital, Fudan University, Shanghai, China.
| | - Yizhi Yu
- National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China.
| |
Collapse
|
59
|
Pobezinskaya EL, Wells AC, Angelou CC, Fagerberg E, Aral E, Iverson E, Kimura MY, Pobezinsky LA. Survival of Naïve T Cells Requires the Expression of Let-7 miRNAs. Front Immunol 2019; 10:955. [PMID: 31130952 PMCID: PMC6509570 DOI: 10.3389/fimmu.2019.00955] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/15/2019] [Indexed: 01/01/2023] Open
Abstract
Maintaining the diversity and constant numbers of naïve T cells throughout the organism's lifetime is necessary for efficient immune responses. Naïve T cell homeostasis, which consists of prolonged survival, occasional proliferation and enforcement of quiescence, is tightly regulated by multiple signaling pathways which are in turn controlled by various transcription factors. However, full understanding of the molecular mechanisms underlying the maintenance of the peripheral T cell pool has not been achieved. In the present study, we demonstrate that T cell-specific deficiency in let-7 miRNAs results in peripheral T cell lymphopenia resembling that of Dicer1 knockout mice. Deletion of let-7 leads to profound T cell apoptosis while overexpression prevents it. We further show that in the absence of let-7, T cells cannot sustain optimal levels of the pro-survival factor Bcl2 in spite of the intact IL-7 signaling, and re-expression of Bcl2 in let-7 deficient T cells completely rescues the survival defect. Thus, we have uncovered a novel let-7-dependent mechanism of post-transcriptional regulation of naïve T cell survival in vivo.
Collapse
Affiliation(s)
- Elena L. Pobezinskaya
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Alexandria C. Wells
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Constance C. Angelou
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Eric Fagerberg
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Esengul Aral
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Elizabeth Iverson
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Motoko Y. Kimura
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Leonid A. Pobezinsky
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| |
Collapse
|
60
|
Chapman NM, Shrestha S, Chi H. Metabolism in Immune Cell Differentiation and Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1011:1-85. [PMID: 28875486 DOI: 10.1007/978-94-024-1170-6_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The immune system is a central determinant of organismal health. Functional immune responses require quiescent immune cells to rapidly grow, proliferate, and acquire effector functions when they sense infectious agents or other insults. Specialized metabolic programs are critical regulators of immune responses, and alterations in immune metabolism can cause immunological disorders. There has thus been growing interest in understanding how metabolic processes control immune cell functions under normal and pathophysiological conditions. In this chapter, we summarize how metabolic programs are tuned and what the physiological consequences of metabolic reprogramming are as they relate to immune cell homeostasis, differentiation, and function.
Collapse
Affiliation(s)
- Nicole M Chapman
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA
| | - Sharad Shrestha
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA.
| |
Collapse
|
61
|
Konopacki C, Pritykin Y, Rubtsov Y, Leslie CS, Rudensky AY. Transcription factor Foxp1 regulates Foxp3 chromatin binding and coordinates regulatory T cell function. Nat Immunol 2019; 20:232-242. [PMID: 30643266 DOI: 10.1038/s41590-018-0291-z] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 11/25/2018] [Indexed: 12/22/2022]
Abstract
Regulatory T cells (Treg cells), whose differentiation and function are controlled by transcription factor Foxp3, express the closely related family member Foxp1. Here we explored Foxp1 function in Treg cells. We found that a large number of Foxp3-bound genomic sites in Treg cells were occupied by Foxp1 in both Treg cells and conventional T cells (Tconv cells). In Treg cells, Foxp1 markedly increased Foxp3 binding to these sites. Foxp1 deficiency in Treg cells resulted in their impaired function and competitive fitness, associated with markedly reduced CD25 expression and interleukin-2 (IL-2) responsiveness, diminished CTLA-4 expression and increased SATB1 expression. The characteristic expression patterns of CD25, Foxp3 and CTLA-4 in Treg cells were fully or partially rescued by strong IL-2 signaling. Our studies suggest that Foxp1 serves an essential non-redundant function in Treg cells by enforcing Foxp3-mediated regulation of gene expression and enabling efficient IL-2 signaling in these cells.
Collapse
Affiliation(s)
- Catherine Konopacki
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yuri Pritykin
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yury Rubtsov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia
| | - Christina S Leslie
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| | - Alexander Y Rudensky
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA. .,Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA. .,Ludwig Center at Memorial Sloan Kettering Cancer Center, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| |
Collapse
|
62
|
Tu E, Chia CPZ, Chen W, Zhang D, Park SA, Jin W, Wang D, Alegre ML, Zhang YE, Sun L, Chen W. T Cell Receptor-Regulated TGF-β Type I Receptor Expression Determines T Cell Quiescence and Activation. Immunity 2019; 48:745-759.e6. [PMID: 29669252 DOI: 10.1016/j.immuni.2018.03.025] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 01/16/2018] [Accepted: 03/22/2018] [Indexed: 12/12/2022]
Abstract
It is unclear how quiescence is enforced in naive T cells, but activation by foreign antigens and self-antigens is allowed, despite the presence of inhibitory signals. We showed that active transforming growth factor β (TGF-β) signaling was present in naive T cells, and T cell receptor (TCR) engagement reduced TGF-β signaling during T cell activation by downregulating TGF-β type 1 receptor (TβRI) through activation of caspase recruitment domain-containing protein 11 (CARD11) and nuclear factor κB (NF-κB). TGF-β prevented TCR-mediated TβRI downregulation, but this was abrogated by interleukin-6 (IL-6). Mitigation of TCR-mediated TβRI downregulation through overexpression of TβRI in naive and activated T cells rendered T cells less responsive and suppressed autoimmunity. Naive T cells in autoimmune patients exhibited reduced TβRI expression and increased TCR-driven proliferation compared to healthy subjects. Thus, TCR-mediated regulation of TβRI-TGF-β signaling acts as a crucial criterion to determine T cell quiescence and activation.
Collapse
Affiliation(s)
- Eric Tu
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA
| | - Cheryl P Z Chia
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA
| | - Weiwei Chen
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Dunfang Zhang
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA
| | - Sang A Park
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA
| | - Wenwen Jin
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA
| | - Dandan Wang
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | | | - Ying E Zhang
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, NCI, NIH, Bethesda, MD 20892, USA
| | - Lingyun Sun
- Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
| | - WanJun Chen
- Mucosal Immunology Section, NIDCR, NIH, Bethesda, MD 20892, USA.
| |
Collapse
|
63
|
Ghosh S, Roy-Chowdhuri S, Kang K, Im SH, Rudra D. The transcription factor Foxp1 preserves integrity of an active Foxp3 locus in extrathymic Treg cells. Nat Commun 2018; 9:4473. [PMID: 30367168 PMCID: PMC6203760 DOI: 10.1038/s41467-018-07018-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/11/2018] [Indexed: 02/08/2023] Open
Abstract
Regulatory T (Treg) cells, which are broadly classified as thymically derived (tTreg) or extrathymically induced (iTreg), suppress immune responses and display stringent dependence to the transcription factor Foxp3. However precise understanding of molecular events that promote and preserve Foxp3 expression in Treg cells is still evolving. Here we show that Foxp1, a forkhead transcription factor and a sibling family member of Foxp3, is essential for sustaining optimal expression of Foxp3 specifically in iTreg cells. Deletion of Foxp1 renders iTreg cells to gradually lose Foxp3, resulting in dramatically reduced Nrp1-Helios- iTreg compartment as well as augmented intestinal inflammation in aged mice. Our finding underscores a mechanistic module in which evolutionarily related transcription factors establish a molecular program to ensure efficient immune homeostasis. Furthermore, it provides a novel target that can be potentially modulated to exclusively reinforce iTreg stability keeping their thymic counterpart unperturbed.
Collapse
Affiliation(s)
- Sayantani Ghosh
- Academy of Immunology and Microbiology, Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Sinchita Roy-Chowdhuri
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Keunsoo Kang
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, 31116, Republic of Korea
| | - Sin-Hyeog Im
- Academy of Immunology and Microbiology, Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Dipayan Rudra
- Academy of Immunology and Microbiology, Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea.
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.
| |
Collapse
|
64
|
Castro W, Chelbi ST, Niogret C, Ramon-Barros C, Welten SPM, Osterheld K, Wang H, Rota G, Morgado L, Vivier E, Raeber ME, Boyman O, Delorenzi M, Barras D, Ho PC, Oxenius A, Guarda G. The transcription factor Rfx7 limits metabolism of NK cells and promotes their maintenance and immunity. Nat Immunol 2018; 19:809-820. [PMID: 29967452 DOI: 10.1038/s41590-018-0144-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 04/20/2018] [Indexed: 02/06/2023]
Abstract
Regulatory factor X 7 (Rfx7) is an uncharacterized transcription factor belonging to a family involved in ciliogenesis and immunity. Here, we found that deletion of Rfx7 leads to a decrease in natural killer (NK) cell maintenance and immunity in vivo. Genomic approaches showed that Rfx7 coordinated a transcriptional network controlling cell metabolism. Rfx7-/- NK lymphocytes presented increased size, granularity, proliferation, and energetic state, whereas genetic reduction of mTOR activity mitigated those defects. Notably, Rfx7-deficient NK lymphocytes were rescued by interleukin 15 through engagement of the Janus kinase (Jak) pathway, thus revealing the importance of this signaling for maintenance of such spontaneously activated NK cells. Rfx7 therefore emerges as a novel transcriptional regulator of NK cell homeostasis and metabolic quiescence.
Collapse
Affiliation(s)
- Wilson Castro
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Sonia T Chelbi
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland.,Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Charlène Niogret
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | | | | | - Kevin Osterheld
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Haiping Wang
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland
| | - Giorgia Rota
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Leonor Morgado
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, Inserm, CNRS, Marseille, France.,Service d'Immunologie, Hôpital de la Timone, Assistance Publique-Hôpitaux de Marseille, Marseille, France.,Innate Pharma Research Labs., Innate Pharma, Marseille, France
| | - Miro E Raeber
- Department of Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Onur Boyman
- Department of Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Mauro Delorenzi
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland.,Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - David Barras
- Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - Ping-Chih Ho
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland
| | | | - Greta Guarda
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland. .,Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.
| |
Collapse
|
65
|
Kim MJ, Choi SK, Hong SH, Eun JW, Nam SW, Han JW, You JS. Oncogenic IL7R is downregulated by histone deacetylase inhibitor in esophageal squamous cell carcinoma via modulation of acetylated FOXO1. Int J Oncol 2018; 53:395-403. [PMID: 29749437 DOI: 10.3892/ijo.2018.4392] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 04/18/2018] [Indexed: 11/05/2022] Open
Abstract
The interleukin-7 receptor (IL7R) is generally expressed in immune cells and is critical in survival, development and homeostasis in the immune system. Advanced genome-wide cancer studies have reported that IL7R is genetically amplified in human esophageal squamous cell carcinoma (ESCC), however, the exact role of IL7R in ESCC has not been investigated. In the present study, it was found that IL7R was overexpressed in ESCC cohorts and the loss of IL7R induced anti-oncogenic effects in ESCC cell lines. A small panel of epigenetic drugs were screened for their ability to downregulate the expression of IL7R. Unexpectedly, apicidin, a histone deacetylase (HDAC) inhibitor, effectively downregulated the expression of IL7R in a dose-dependent manner at an early time-point, as determined by quantitative polymerase chain reaction and IL7R immunostaining, and did not require de novo protein synthesis. Of note, apicidin induced the acetylation of Forkhead box-containing protein, O subfamily 1, which acts as a repressor at the IL7R promoter, accompanied with depleted active histone modifications based on chromatin immunoprecipitation assay. Taken together, these results demonstrated that targeting oncogenic IL7R in ESCC by HDAC inhibitors may be a valuable therapeutic approach.
Collapse
Affiliation(s)
- Myoung Jun Kim
- Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sung Kyung Choi
- Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Seong Hwi Hong
- Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Jung Woo Eun
- Functional RNomics Research Center, College of Medicine, The Catholic University, Seoul 06591, Republic of Korea
| | - Suk Woo Nam
- Functional RNomics Research Center, College of Medicine, The Catholic University, Seoul 06591, Republic of Korea
| | - Jeung-Whan Han
- Research Center for Epigenome Regulation, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jueng Soo You
- Department of Biochemistry, Research Institute of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| |
Collapse
|
66
|
|
67
|
Bond J, Domaschenz R, Roman-Trufero M, Sabbattini P, Ferreiros-Vidal I, Gerrard G, Asnafi V, Macintyre E, Merkenschlager M, Dillon N. Direct interaction of Ikaros and Foxp1 modulates expression of the G protein-coupled receptor G2A in B-lymphocytes and acute lymphoblastic leukemia. Oncotarget 2018; 7:65923-65936. [PMID: 27588474 PMCID: PMC5323203 DOI: 10.18632/oncotarget.11688] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 08/13/2016] [Indexed: 12/13/2022] Open
Abstract
Ikaros and Foxp1 are transcription factors that play key roles in normal lymphopoiesis and lymphoid malignancies. We describe a novel physical and functional interaction between the proteins, which requires the central zinc finger domain of Ikaros. The Ikaros-Foxp1 interaction is abolished by deletion of this region, which corresponds to the IK6 isoform that is commonly associated with high-risk acute lymphoblastic leukemia (ALL). We also identify the Gpr132 gene, which encodes the orphan G protein-coupled receptor G2A, as a novel target for Foxp1. Increased expression of Foxp1 enhanced Gpr132 transcription and caused cell cycle changes, including G2 arrest. Co-expression of wild-type Ikaros, but not IK6, displaced Foxp1 binding from the Gpr132 gene, reversed the increase in Gpr132 expression and inhibited G2 arrest. Analysis of primary ALL samples revealed a significant increase in GPR132 expression in IKZF1-deleted BCR-ABL negative patients, suggesting that levels of wild-type Ikaros may influence the regulation of G2A in B-ALL. Our results reveal a novel effect of Ikaros haploinsufficiency on Foxp1 functioning, and identify G2A as a potential modulator of the cell cycle in Ikaros-deleted B-ALL.
Collapse
Affiliation(s)
- Jonathan Bond
- Gene Regulation and Chromatin Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom.,Université Paris Descartes Sorbonne Cité, Institut Necker-Enfants Malades (INEM), Institut National de Recherche Médicale (INSERM), and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker Enfants-Malades, Paris, France
| | - Renae Domaschenz
- Gene Regulation and Chromatin Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom.,Present address: Chromatin and Transcriptional Regulation Group, John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Mónica Roman-Trufero
- Gene Regulation and Chromatin Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom
| | - Pierangela Sabbattini
- Gene Regulation and Chromatin Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom
| | - Isabel Ferreiros-Vidal
- Lymphocyte Development Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom
| | - Gareth Gerrard
- Imperial Molecular Pathology, Imperial College Academic Health Sciences Centre, Hammersmith Campus, London W12 0NN, United Kingdom
| | - Vahid Asnafi
- Université Paris Descartes Sorbonne Cité, Institut Necker-Enfants Malades (INEM), Institut National de Recherche Médicale (INSERM), and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker Enfants-Malades, Paris, France
| | - Elizabeth Macintyre
- Université Paris Descartes Sorbonne Cité, Institut Necker-Enfants Malades (INEM), Institut National de Recherche Médicale (INSERM), and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker Enfants-Malades, Paris, France
| | - Matthias Merkenschlager
- Lymphocyte Development Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom
| | - Niall Dillon
- Gene Regulation and Chromatin Group, MRC Clinical Sciences Centre, Imperial College Faculty of Medicine, Hammersmith Campus, London W12 0NN, United Kingdom
| |
Collapse
|
68
|
Foxp1 controls mature B cell survival and the development of follicular and B-1 B cells. Proc Natl Acad Sci U S A 2018; 115:3120-3125. [PMID: 29507226 PMCID: PMC5866538 DOI: 10.1073/pnas.1711335115] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Many patients with B cell lymphoma carry alterations in the gene coding for the transcription factor Foxp1. High Foxp1 expression has been linked to poor prognosis in those malignancies; however, the physiological functions of Foxp1 in mature B cells remain unknown. By employing genetic mouse models, we show that Foxp1 deletion results in reduced B cell numbers and impaired antibody production upon T cell-independent immunization. Foxp1-deficient mature B cells are impaired in survival and exhibit an increased proliferation capacity, and transcriptional analysis identified defective expression of the prosurvival Bcl-xl gene. Our results provide insight into the regulation of mature B cell survival by Foxp1 and have implications for understanding the role of Foxp1 in the development of B cell malignancies. The transcription factor Foxp1 is critical for early B cell development. Despite frequent deregulation of Foxp1 in B cell lymphoma, the physiological functions of Foxp1 in mature B cells remain unknown. Here, we used conditional gene targeting in the B cell lineage and report that Foxp1 disruption in developing and mature B cells results in reduced numbers and frequencies of follicular and B-1 B cells and in impaired antibody production upon T cell-independent immunization in vivo. Moreover, Foxp1-deficient B cells are impaired in survival even though they exhibit an increased capacity to proliferate. Transcriptional analysis identified defective expression of the prosurvival Bcl-2 family gene Bcl2l1 encoding Bcl-xl in Foxp1-deficient B cells, and we identified Foxp1 binding in the regulatory region of Bcl2l1. Transgenic overexpression of Bcl2 rescued the survival defect in Foxp1-deficient mature B cells in vivo and restored peripheral B cell numbers. Thus, our results identify Foxp1 as a physiological regulator of mature B cell survival mediated in part via the control of Bcl-xl expression and imply that this pathway might contribute to the pathogenic function of aberrant Foxp1 expression in lymphoma.
Collapse
|
69
|
Shi B, Geng J, Wang YH, Wei H, Walters B, Li W, Luo X, Stevens A, Pittman M, Li B, Thompson SR, Hu H. Foxp1 Negatively Regulates T Follicular Helper Cell Differentiation and Germinal Center Responses by Controlling Cell Migration and CTLA-4. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:586-594. [PMID: 29212910 PMCID: PMC5891213 DOI: 10.4049/jimmunol.1701000] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/07/2017] [Indexed: 12/27/2022]
Abstract
T follicular helper (Tfh) cells play an essential role in the formation of germinal centers (GC) and generation of high-affinity Abs. The homing of activated CD4+ T cells into B cell follicles and the involvement of key costimulatory and coinhibitory molecules are critical in controlling both the initiation and the magnitude of GC responses. Meanwhile, studies have shown that a high number of single clone B cells leads to intraclonal competition, which inhibits the generation of high-affinity Abs. Our previous work has shown that transcription factor Foxp1 is a critical negative regulator of Tfh cell differentiation. In this study, we report that the deletion of Foxp1 leads to a high proportion of activated CD4+ T cells homing into B cell follicles with faster kinetics, resulting in earlier GC formation. In addition, we show that Foxp1-deficient Tfh cells restore the generation of high-affinity Abs when cotransferred with high numbers of single clone B cells. We find that Foxp1 regulates the expression levels of cytotoxic T lymphocyte-associated Ag-4 (CTLA-4) in activated CD4+ T cells and that Ctla4 is a direct Foxp1 target. Finally, we demonstrate that CTLA-4 expression on conventional CD4+ T cells plays a cell-intrinsic role in Tfh cell differentiation in vivo, and CTLA-4 blockade helps abolish the intraclonal competition of B cells in generating high-affinity Abs.
Collapse
Affiliation(s)
- Bi Shi
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Jianlin Geng
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Yin-Hu Wang
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Hairong Wei
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Beth Walters
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Wei Li
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Xuerui Luo
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Anna Stevens
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Melanie Pittman
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Bin Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
| | - Sunnie R Thompson
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Hui Hu
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; and
| |
Collapse
|
70
|
Goldshtein A, Zerbib SM, Omar I, Cohen-Daniel L, Popkin D, Berger M. Loss of T-cell quiescence by targeting Slfn2 prevents the development and progression of T-ALL. Oncotarget 2018; 7:46835-46847. [PMID: 27206675 PMCID: PMC5216906 DOI: 10.18632/oncotarget.9390] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 04/26/2016] [Indexed: 01/08/2023] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive malignancy of thymocytes. Despite significant improvement in the treatment of T-ALL, approximately 20% of children and most adults undergo relapse. Previous findings demonstrated that loss of T-cell quiescence due to a mutation in the Slfn2 gene (elektra) leads to acquisition of an aberrant developmental program by which T-cells lose their renewal capabilities and undergo apoptosis. Here we show that the elektra mutation in Slfn2 completely prevents a severe lymphoproliferative disease caused by overexpression of BCL2 in combination with Fas deficiency in mice. Moreover, Slfn2 impaired-function protects mice from experimental disease similar to human T-ALL by severely impairing the proliferation potential and survival of leukemic T-cells, partially by activation of the p53 tumor suppressor protein. Our study suggest that in certain malignancies, such as T-ALL, a novel therapeutic strategy may be applied by imposing aberrant development of leukemic cells. Furthermore, as the elektra mutation in Slfn2 seems to impair only T-cells and monocytes, targeting Slfn2 is expected to be harmless to other cell types, and thereby could be a promising target for treating malignancies. Together our results demonstrate the potential of targeting Slfn2 and its human paralog for T-ALL treatment.
Collapse
Affiliation(s)
- Aviya Goldshtein
- The Lautenberg Center for Immunology and Cancer Research, The Biomedical Research Institute Israel-Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Shani Mistriel Zerbib
- The Lautenberg Center for Immunology and Cancer Research, The Biomedical Research Institute Israel-Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Ibrahim Omar
- The Lautenberg Center for Immunology and Cancer Research, The Biomedical Research Institute Israel-Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Leonor Cohen-Daniel
- The Lautenberg Center for Immunology and Cancer Research, The Biomedical Research Institute Israel-Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Daniel Popkin
- Department of Dermatology, Case Western Reserve University, Cleveland, OH, USA
| | - Michael Berger
- The Lautenberg Center for Immunology and Cancer Research, The Biomedical Research Institute Israel-Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| |
Collapse
|
71
|
Luo Y, Liu J, Sun X, Feng T, Fang L, Chen S, Fang C, Feng X, Huang H. Tsc1-dependent transcriptional programming of dendritic cell homeostasis and function. Exp Cell Res 2017; 363:73-83. [PMID: 29294307 DOI: 10.1016/j.yexcr.2017.12.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 12/21/2017] [Accepted: 12/29/2017] [Indexed: 12/22/2022]
Abstract
Dendritic cells (DCs) are pivotal to initiating adaptive immune response. Emerging evidence highlights important roles of tuberous sclerosis complex 1 (Tsc1) in DC development and activation. Our previous study also showed that Tsc1 expression in DCs was required to promote T-cell homeostasis and response partially through inhibiting mammalian target of rapamycin complex1 (mTORC1). However, the molecular mechanism of transcriptional regulation by which Tsc1 control DC homeostasis and function remains largely unknown. Here we globally identified the Tsc1-regulated genes by comparing the transcriptional profiling of Tsc1-deficient DCs with wild-type DCs. It showed that Tsc1 specifically regulated the expression of groups of gene sets critically involved in DC survival, proliferation, metabolism and antigen presentation. The impacts of Tsc1 on DC gene expression were partially dependent on inhibition of mTORC1 signal. Our study thus provides a comprehensive molecular basis for understanding how Tsc1 programs the homeostasis and function of DCs through transcriptional regulation.
Collapse
Affiliation(s)
- Yuechen Luo
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Jingru Liu
- Central Laboratory, The Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou 350001, China
| | - Xiaolei Sun
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Tiantian Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Lijun Fang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Song Chen
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Chunmin Fang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Xiaoming Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China.
| | - Huifang Huang
- Central Laboratory, The Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou 350001, China.
| |
Collapse
|
72
|
Song Y, Li X, Zeng Z, Li Q, Gong Z, Liao Q, Li X, Chen P, Xiang B, Zhang W, Xiong F, Zhou Y, Zhou M, Ma J, Li Y, Chen X, Li G, Xiong W. Epstein-Barr virus encoded miR-BART11 promotes inflammation-induced carcinogenesis by targeting FOXP1. Oncotarget 2017; 7:36783-36799. [PMID: 27167345 PMCID: PMC5095039 DOI: 10.18632/oncotarget.9170] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 04/16/2016] [Indexed: 12/23/2022] Open
Abstract
Epstein-Barr virus (EBV) infection and chronic inflammation are closely associated with the development and progression of nasopharyngeal carcinoma (NPC) and gastric cancer (GC), and the infiltration of inflammatory cells, including tumor-associated macrophages (TAMs), is often observed in these cancers. EBV encodes 44 mature micro RNAs (miRNAs), but the roles of only a few EBV-encoded miRNA targets are known in cancer development, and here, our aim was to elucidate the effects of EBV-miR-BART11 on FOXP1 expression, and potential involvement in inflammation-induced carcinogenesis. We constructed an EBV miRNA-dependent gene regulatory network and predicted that EBV-miR-BART11 is able to target forkhead box P1 (FOXP1), a key molecule involved in monocyte to macrophage differentiation. Here, using luciferase reporter assay, we confirmed that EBV-miR-BART11 directly targets the 3′-untranslated region of FOXP1 gene, inhibits FOXP1 induction of TAM differentiation, and the secretion of inflammatory cytokines into the tumor microenvironment, inducing the proliferation of NPC and GC cells. FOXP1 overexpression hindered monocyte differentiation and inhibited NPC and GC cells growth. Our results demonstrated that EBV-miR-BART11 plays a crucial role in the promotion of inflammation-induced NPC and GC carcinogenesis by inhibiting FOXP1 tumor-suppressive effects. We showed a novel EBV-dependent mechanism that may induce the carcinogenesis of NPC and GC, which may help define new potential biomarkers and targets for NPC and GC diagnosis and treatment.
Collapse
Affiliation(s)
- Yali Song
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiaoling Li
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoyang Zeng
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiao Li
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Zhaojian Gong
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Qianjin Liao
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Xiayu Li
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Pan Chen
- Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Bo Xiang
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wenling Zhang
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Fang Xiong
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanhong Zhou
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Ming Zhou
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Jian Ma
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Yong Li
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Xiang Chen
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guiyuan Li
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Xiong
- The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, China.,The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|
73
|
Hieronymus H, Iaquinta PJ, Wongvipat J, Gopalan A, Murali R, Mao N, Carver BS, Sawyers CL. Deletion of 3p13-14 locus spanning FOXP1 to SHQ1 cooperates with PTEN loss in prostate oncogenesis. Nat Commun 2017; 8:1081. [PMID: 29057879 PMCID: PMC5651901 DOI: 10.1038/s41467-017-01198-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 08/25/2017] [Indexed: 01/01/2023] Open
Abstract
A multigenic locus at 3p13-14, spanning FOXP1 to SHQ1, is commonly deleted in prostate cancer and lost broadly in a range of cancers but has unknown significance to oncogenesis or prognosis. Here, we report that FOXP1-SHQ1 deletion cooperates with PTEN loss to accelerate prostate oncogenesis and that loss of component genes correlates with prostate, breast, and head and neck cancer recurrence. We demonstrate that Foxp1-Shq1 deletion accelerates prostate tumorigenesis in mice in combination with Pten loss, consistent with the association of FOXP1-SHQ1 and PTEN loss observed in human cancers. Tumors with combined Foxp1-Shq1 and Pten deletion show increased proliferation and anaplastic dedifferentiation, as well as mTORC1 hyperactivation with reduced Akt phosphorylation. Foxp1-Shq1 deletion restores expression of AR target genes repressed in tumors with Pten loss, circumventing PI3K-mediated repression of the androgen axis. Moreover, FOXP1-SHQ1 deletion has prognostic relevance, with cancer recurrence associated with combined loss of PTEN and FOXP1-SHQ1 genes.
Collapse
Affiliation(s)
- Haley Hieronymus
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - Phillip J Iaquinta
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - John Wongvipat
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - Anuradha Gopalan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - Rajmohan Murali
- Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - Ninghui Mao
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | - Brett S Carver
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
- Department of Urology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY, 10065, USA
| | | |
Collapse
|
74
|
Luo X, Zhu F, Chen Z, Li D, Li B. Regulation of Metabolism Across Different Subsets of T Cells in Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1011:197-209. [DOI: 10.1007/978-94-024-1170-6_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
75
|
Omar I, Rom O, Aviram M, Cohen-Daniel L, Gebre AK, Parks JS, Berger M. Slfn2 mutation-induced loss of T-cell quiescence leads to elevated de novo sterol synthesis. Immunology 2017; 152:484-493. [PMID: 28672048 DOI: 10.1111/imm.12785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/12/2017] [Accepted: 06/22/2017] [Indexed: 01/04/2023] Open
Abstract
Acquisition of a 'quiescence programme' by naive T cells is important to provide a stress-free environment and resistance to apoptosis while preserving their responsiveness to activating stimuli. Therefore, the survival and proper function of naive T cells depends on their ability to maintain quiescence. Recently we demonstrated that by preventing chronic unresolved endoplasmic reticulum (ER) stress, Schlafen2 (Slfn2) maintains a stress-free environment to conserve a pool of naive T cells ready to respond to a microbial invasion. These findings strongly suggest an intimate association between quiescence and stress signalling. However, the connection between ER stress conditions and loss of T-cell quiescence is unknown. Here we demonstrate that homeostasis of cholesterol and lipids, is disrupted in T cells and monocytes from Slfn2-mutant, elektra, mice with higher levels of lipid rafts and lipid droplets found in these cells. Moreover, elektra T cells had elevated levels of free cholesterol and cholesteryl ester due to increased de novo synthesis and higher levels of the enzyme HMG-CoA reductase. As cholesterol plays an important role in the transition of T cells from resting to active state, and ER regulates cholesterol and lipid synthesis, we suggest that regulation of cholesterol levels through the prevention of ER stress is an essential component of the mechanism by which Slfn2 regulates quiescence.
Collapse
Affiliation(s)
- Ibrahim Omar
- The Lautenberg Centre for Immunology and Cancer Research, The Biomedical Research Institute Israel Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School Jerusalem, Jerusalem, Israel
| | - Oren Rom
- The Lipid Research Laboratory, Rambam Health Care Campus, The Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Michael Aviram
- The Lipid Research Laboratory, Rambam Health Care Campus, The Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Leonor Cohen-Daniel
- The Lautenberg Centre for Immunology and Cancer Research, The Biomedical Research Institute Israel Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School Jerusalem, Jerusalem, Israel
| | - Abraham K Gebre
- Section on Molecular Medicine, Department of Internal Medicine, Medical Center Blvd, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - John S Parks
- Section on Molecular Medicine, Department of Internal Medicine, Medical Center Blvd, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Michael Berger
- The Lautenberg Centre for Immunology and Cancer Research, The Biomedical Research Institute Israel Canada of the Faculty of Medicine, The Hebrew University Hadassah Medical School Jerusalem, Jerusalem, Israel
| |
Collapse
|
76
|
Wells AC, Daniels KA, Angelou CC, Fagerberg E, Burnside AS, Markstein M, Alfandari D, Welsh RM, Pobezinskaya EL, Pobezinsky LA. Modulation of let-7 miRNAs controls the differentiation of effector CD8 T cells. eLife 2017; 6. [PMID: 28737488 PMCID: PMC5550279 DOI: 10.7554/elife.26398] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 07/21/2017] [Indexed: 12/14/2022] Open
Abstract
The differentiation of naive CD8 T cells into effector cytotoxic T lymphocytes upon antigen stimulation is necessary for successful antiviral, and antitumor immune responses. Here, using a mouse model, we describe a dual role for the let-7 microRNAs in the regulation of CD8 T cell responses, where maintenance of the naive phenotype in CD8 T cells requires high levels of let-7 expression, while generation of cytotoxic T lymphocytes depends upon T cell receptor-mediated let-7 downregulation. Decrease of let-7 expression in activated T cells enhances clonal expansion and the acquisition of effector function through derepression of the let-7 targets, including Myc and Eomesodermin. Ultimately, we have identified a novel let-7-mediated mechanism, which acts as a molecular brake controlling the magnitude of CD8 T cell responses. DOI:http://dx.doi.org/10.7554/eLife.26398.001
Collapse
Affiliation(s)
- Alexandria C Wells
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Keith A Daniels
- Department of Pathology, University of Massachusetts Medical School, Worcester, United States
| | - Constance C Angelou
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Eric Fagerberg
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Amy S Burnside
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Michele Markstein
- Department of Biology, University of Massachusetts, Amherst, United States
| | - Dominique Alfandari
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Raymond M Welsh
- Department of Pathology, University of Massachusetts Medical School, Worcester, United States
| | - Elena L Pobezinskaya
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| | - Leonid A Pobezinsky
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, United States
| |
Collapse
|
77
|
Abstract
Background CD4+ T cells can be broadly divided into naïve and memory subsets, each of which are differentially impaired by the aging process. It is unclear if and how these differences are reflected at the transcriptomic level. We performed microarray profiling on RNA derived from naïve (CD44low) and memory (CD44high) CD4+ T cells derived from young (2–3 month) and old (28 month) mice, in order to better understand the mechanisms of age-related functional alterations in both subsets. We also performed follow-up bioinformatic analyses in order to determine the functional consequences of gene expression changes in both of these subsets, and identify regulatory factors potentially responsible for these changes. Results We found 185 and 328 genes differentially expressed (FDR ≤ 0.05) in young vs. old naïve and memory cells, respectively, with 50 genes differentially expressed in both subsets. Functional annotation analyses highlighted an increase in genes involved in apoptosis specific to aged naïve cells. Both subsets shared age-related increases in inflammatory signaling genes, along with a decrease in oxidative phosphorylation genes. Cis-regulatory analyses revealed enrichment of multiple transcription factor binding sites near genes with age-associated expression, in particular NF-κB and several forkhead box transcription factors. Enhancer associated histone modifications were enriched near genes down-regulated in naïve cells. Comparison of our results with previous mouse and human datasets indicates few overlapping genes overall, but suggest consistent up-regulation of Casp1 and Il1r2, and down-regulation of Foxp1 in both mouse and human CD4+ T cells. Conclusions The transcriptomes of naïve and memory CD4+ T cells are distinctly affected by the aging process. However, both subsets exhibit a common increase inflammatory genes and decrease in oxidative phosphorylation genes. NF-κB, forkhead box, and Myc transcription factors are implicated as upstream regulators of these gene expression changes in both subsets, with enhancer histone modifications potentially driving unique changes unique to naïve cells. Finally we conclude that there is little overlap in age-related gene expression changes between humans and mice; however, age-related alterations in a small subset of genes may be conserved. Electronic supplementary material The online version of this article (doi:10.1186/s12979-017-0092-5) contains supplementary material, which is available to authorized users.
Collapse
|
78
|
Abstract
Regulatory T (Treg) cells are a distinct T-cell lineage characterized by sustained Foxp3 expression and potent suppressor function, but the upstream dominant factors that preserve Treg lineage-specific features are mostly unknown. Here, we show that Lkb1 maintains Treg cell lineage identity by stabilizing Foxp3 expression and enforcing suppressor function. Upon T-cell receptor (TCR) stimulation Lkb1 protein expression is upregulated in Treg cells but not in conventional T cells. Mice with Treg cell-specific deletion of Lkb1 develop a fatal early-onset autoimmune disease, with no Foxp3 expression in most Treg cells. Lkb1 stabilizes Foxp3 expression by preventing STAT4-mediated methylation of the conserved noncoding sequence 2 (CNS2) in the Foxp3 locus. Independent of maintaining Foxp3 expression, Lkb1 programs the expression of a wide spectrum of immunosuppressive genes, through mechanisms involving the augmentation of TGF-β signalling. These findings identify a critical function of Lkb1 in maintaining Treg cell lineage identity. The protein kinase Lkb1 has been shown to limit conventional T cell activation and pro-inflammatory functions. Here the authors show that Lkb1 also maintains Foxp3 expression and suppressive function in regulatory T (Treg) cells, and that Treg-specific Lkb1-deficient mice develop fatal autoimmune disease.
Collapse
|
79
|
Rocca DL, Wilkinson KA, Henley JM. SUMOylation of FOXP1 regulates transcriptional repression via CtBP1 to drive dendritic morphogenesis. Sci Rep 2017; 7:877. [PMID: 28408745 PMCID: PMC5429823 DOI: 10.1038/s41598-017-00707-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/08/2017] [Indexed: 12/13/2022] Open
Abstract
Forkhead Box P (FOXP) transcriptional repressors play a major role in brain development and their dysfunction leads to human cognitive disorders. However, little is known about how the activity of these proteins is regulated. Here, we show that FOXP1 SUMOylation at lysine 670 is required for recruiting the co-repressor CtBP1 and transcriptional repression. FOXP1 SUMOylation is tightly controlled by neuronal activity, in which synapse to nucleus signalling, mediated via NMDAR and L-type calcium channels, results in rapid FOXP1 deSUMOylation. Knockdown of FOXP1 in cultured cortical neurons stunts dendritic outgrowth and this phenotype cannot be rescued by replacement with a non-SUMOylatable FOXP1-K670R mutant, indicating that SUMOylation of FOXP1 is essential for regulation of proper neuronal morphogenesis. These results suggest that activity-dependent SUMOylation of FOXP1 may be an important mediator of early cortical development and neuronal network formation in the brain.
Collapse
Affiliation(s)
- Daniel L Rocca
- School of Biochemistry, Centre for Synaptic Plasticity, Medical Sciences Building, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Kevin A Wilkinson
- School of Biochemistry, Centre for Synaptic Plasticity, Medical Sciences Building, University of Bristol, University Walk, Bristol, BS8 1TD, UK
| | - Jeremy M Henley
- School of Biochemistry, Centre for Synaptic Plasticity, Medical Sciences Building, University of Bristol, University Walk, Bristol, BS8 1TD, UK.
| |
Collapse
|
80
|
Segal LN, Clemente JC, Li Y, Ruan C, Cao J, Danckers M, Morris A, Tapyrik S, Wu BG, Diaz P, Calligaro G, Dawson R, van Zyl-Smit RN, Dheda K, Rom WN, Weiden MD. Anaerobic Bacterial Fermentation Products Increase Tuberculosis Risk in Antiretroviral-Drug-Treated HIV Patients. Cell Host Microbe 2017; 21:530-537.e4. [PMID: 28366509 DOI: 10.1016/j.chom.2017.03.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/01/2017] [Accepted: 03/02/2017] [Indexed: 02/06/2023]
Abstract
Despite the immune-reconstitution with antiretroviral therapy (ART), HIV-infected individuals remain highly susceptible to tuberculosis (TB) and have an enrichment of oral anaerobes in the lung. Products of bacterial anaerobic metabolism, like butyrate and other short-chain fatty acids (SCFAs), induce regulatory T cells (Tregs). We tested whether SCFAs contribute to poor TB control in a longitudinal cohort of ART-treated HIV-infected South Africans. Increase in serum SCFAs was associated with increased TB susceptibility. SCFAs inhibited IFN-γ and IL-17A production in peripheral blood mononuclear cells from HIV-infected ART-treated individuals in response to M. tuberculosis antigen stimulation. Pulmonary SCFAs correlated with increased oral anaerobes, such as Prevotella in the lung, and with M. tuberculosis antigen-induced Tregs. Metabolites from anaerobic bacterial fermentation may, therefore, increase TB susceptibility by suppressing IFN-γ and IL-17A production during the cellular immune response to M. tuberculosis.
Collapse
Affiliation(s)
- Leopoldo N Segal
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA
| | - Jose C Clemente
- Icahn Institute for Genomics and Multiscale Biology, Department of Genetics and Genomic Sciences, and Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yonghua Li
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA
| | - Chunhai Ruan
- Metabolomics Core, University of Michigan School of Medicine, Ann Arbor, MI 48105, USA
| | - Jane Cao
- Metabolomics Core, University of Michigan School of Medicine, Ann Arbor, MI 48105, USA
| | - Mauricio Danckers
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA
| | - Alison Morris
- Division of Pulmonary, Allergy, and Critical Care Medicine, Center for Medicine and the Microbiome, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Sarah Tapyrik
- Division of Pulmonary, Critical Care & Sleep Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Benjamin G Wu
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA
| | - Philip Diaz
- Division of Pulmonary, Critical Care & Sleep Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Gregory Calligaro
- Division of Pulmonology, Department of Medicine & UCT Lung Institute, University of Cape Town, Cape Town 7925, South Africa
| | - Rodney Dawson
- Division of Pulmonology, Department of Medicine & UCT Lung Institute, University of Cape Town, Cape Town 7925, South Africa
| | - Richard N van Zyl-Smit
- Division of Pulmonology, Department of Medicine & UCT Lung Institute, University of Cape Town, Cape Town 7925, South Africa
| | - Keertan Dheda
- Division of Pulmonology, Department of Medicine & UCT Lung Institute, University of Cape Town, Cape Town 7925, South Africa
| | - William N Rom
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA
| | - Michael D Weiden
- Division of Pulmonary, Critical Care and Sleep Medicine, School of Medicine, New York University, New York, NY 10016, USA.
| |
Collapse
|
81
|
Li H, Liu P, Xu S, Li Y, Dekker JD, Li B, Fan Y, Zhang Z, Hong Y, Yang G, Tang T, Ren Y, Tucker HO, Yao Z, Guo X. FOXP1 controls mesenchymal stem cell commitment and senescence during skeletal aging. J Clin Invest 2017; 127:1241-1253. [PMID: 28240601 DOI: 10.1172/jci89511] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 01/05/2017] [Indexed: 12/15/2022] Open
Abstract
A hallmark of aged mesenchymal stem/progenitor cells (MSCs) in bone marrow is the pivot of differentiation potency from osteoblast to adipocyte coupled with a decrease in self-renewal capacity. However, how these cellular events are orchestrated in the aging progress is not fully understood. In this study, we have used molecular and genetic approaches to investigate the role of forkhead box P1 (FOXP1) in transcriptional control of MSC senescence. In bone marrow MSCs, FOXP1 expression levels declined with age in an inverse manner with those of the senescence marker p16INK4A. Conditional depletion of Foxp1 in bone marrow MSCs led to premature aging characteristics, including increased bone marrow adiposity, decreased bone mass, and impaired MSC self-renewal capacity in mice. At the molecular level, FOXP1 regulated cell-fate choice of MSCs through interactions with the CEBPβ/δ complex and recombination signal binding protein for immunoglobulin κ J region (RBPjκ), key modulators of adipogenesis and osteogenesis, respectively. Loss of p16INK4A in Foxp1-deficient MSCs partially rescued the defects in replication capacity and bone mass accrual. Promoter occupancy analyses revealed that FOXP1 directly represses transcription of p16INK4A. These results indicate that FOXP1 attenuates MSC senescence by orchestrating their cell-fate switch while maintaining their replicative capacity in a dose- and age-dependent manner.
Collapse
|
82
|
PUMILIO/FOXP1 signaling drives expansion of hematopoietic stem/progenitor and leukemia cells. Blood 2017; 129:2493-2506. [PMID: 28232582 DOI: 10.1182/blood-2016-10-747436] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/20/2017] [Indexed: 12/13/2022] Open
Abstract
RNA-binding proteins (RBPs) have emerged as important regulators of invertebrate adult stem cells, but their activities remain poorly appreciated in mammals. Using a short hairpin RNA strategy, we demonstrate here that the 2 mammalian RBPs, PUMILIO (PUM)1 and PUM2, members of the PUF family of posttranscriptional regulators, are essential for hematopoietic stem/progenitor cell (HSPC) proliferation and survival in vitro and in vivo upon reconstitution assays. Moreover, we found that PUM1/2 sustain myeloid leukemic cell growth. Through a proteomic approach, we identified the FOXP1 transcription factor as a new target of PUM1/2. Contrary to its canonical repressive activity, PUM1/2 rather promote FOXP1 expression by a direct binding to 2 canonical PUM responsive elements present in the FOXP1-3' untranslated region (UTR). Expression of FOXP1 strongly correlates with PUM1 and PUM2 levels in primary HSPCs and myeloid leukemia cells. We demonstrate that FOXP1 by itself supports HSPC and leukemic cell growth, thus mimicking PUM activities. Mechanistically, FOXP1 represses the expression of the p21-CIP1 and p27-KIP1 cell cycle inhibitors. Enforced FOXP1 expression reverses shPUM antiproliferative and proapoptotic activities. Altogether, our results reveal a novel regulatory pathway, underscoring a previously unknown and interconnected key role of PUM1/2 and FOXP1 in regulating normal HSPC and leukemic cell growth.
Collapse
|
83
|
Silva SL, Albuquerque AS, Matoso P, Charmeteau-de-Muylder B, Cheynier R, Ligeiro D, Abecasis M, Anjos R, Barata JT, Victorino RMM, Sousa AE. IL-7-Induced Proliferation of Human Naive CD4 T-Cells Relies on Continued Thymic Activity. Front Immunol 2017; 8:20. [PMID: 28154568 PMCID: PMC5243809 DOI: 10.3389/fimmu.2017.00020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 01/05/2017] [Indexed: 01/06/2023] Open
Abstract
Naive CD4 T-cell maintenance is critical for immune competence. We investigated here the fine-tuning of homeostatic mechanisms of the naive compartment to counteract the loss of de novo CD4 T-cell generation. Adults thymectomized in early childhood during corrective cardiac surgery were grouped based on presence or absence of thymopoiesis and compared with age-matched controls. We found that the preservation of the CD31- subset was independent of the thymus and that its size is tightly controlled by peripheral mechanisms, including prolonged cell survival as attested by Bcl-2 levels. Conversely, a significant contraction of the CD31+ naive subset was observed in the absence of thymic activity. This was associated with impaired responses of purified naive CD4 T-cells to IL-7, namely, in vitro proliferation and upregulation of CD31 expression, which likely potentiated the decline in recent thymic emigrants. Additionally, we found no apparent constraint in the differentiation of naive cells into the memory compartment in individuals completely lacking thymic activity despite upregulation of DUSP6, a phosphatase associated with increased TCR threshold. Of note, thymectomized individuals featuring some degree of thymopoiesis were able to preserve the size and diversity of the naive CD4 compartment, further arguing against complete thymectomy in infancy. Overall, our data suggest that robust peripheral mechanisms ensure the homeostasis of CD31- naive CD4 pool and point to the requirement of continuous thymic activity to the maintenance of IL-7-driven homeostatic proliferation of CD31+ naive CD4 T-cells, which is essential to secure T-cell diversity throughout life.
Collapse
Affiliation(s)
- Susana L Silva
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Centro Hospitalar de Lisboa Norte, Hospital de Santa Maria, Lisboa, Portugal
| | - Adriana S Albuquerque
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| | - Paula Matoso
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| | - Bénédicte Charmeteau-de-Muylder
- Cytokines and Viral Infections, Immunology Infection and Inflammation Department, Institut Cochin, INSERM, U1016, Paris, France; CNRS, UMR8104, Paris, France; Université Paris Descartes, Paris, France
| | - Rémi Cheynier
- Cytokines and Viral Infections, Immunology Infection and Inflammation Department, Institut Cochin, INSERM, U1016, Paris, France; CNRS, UMR8104, Paris, France; Université Paris Descartes, Paris, France
| | - Dário Ligeiro
- Centro de Sangue e Tranplantação de Lisboa, Instituto Português de Sangue e Transplantação, IP , Lisboa , Portugal
| | - Miguel Abecasis
- Departamento do Coração, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental , Carnaxide , Portugal
| | - Rui Anjos
- Departamento do Coração, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental , Carnaxide , Portugal
| | - João T Barata
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| | - Rui M M Victorino
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal; Centro Hospitalar de Lisboa Norte, Hospital de Santa Maria, Lisboa, Portugal
| | - Ana E Sousa
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa , Lisboa , Portugal
| |
Collapse
|
84
|
Tsc1 expression by dendritic cells is required to preserve T-cell homeostasis and response. Cell Death Dis 2017; 8:e2553. [PMID: 28079897 PMCID: PMC5386387 DOI: 10.1038/cddis.2016.487] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 01/04/2023]
Abstract
Dendritic cells (DCs) are pivotal to the induction of adaptive T-cell immune responses. Recent evidence highlights a critical role of tuberous sclerosis complex 1 (Tsc1), a primarily upstream negative regulator of mammalian target of rapamycin (mTOR), in DC development, but whether and how Tsc1 directly regulate mature DC function in vivo remains elusive. Here we show that selective disruption of Tsc1 in DCs results in a lymphoproliferative disorder with the spontaneous activation of T cells. Tsc1 deficiency results in the activation of mTORC1-PPARγ pathway, which leads to the upregulation of neuropilin-1 (Nrp1) expression on DCs to stimulate naive T-cell proliferation. However, Tsc1-deficient DCs have defects in the ability to induce antigen-specific T-cell responses in vitro and in vivo owing to impaired survival during antigen transportation and presentation. Indeed, Tsc1 promotes DC survival through restraining independent mTORC1 and ROS-Bim pathways. Our study identifies Tsc1 as a crucial signaling checkpoint in DCs essential for preserving T-cell homeostasis and response.
Collapse
|
85
|
Garaud S, Roufosse F, De Silva P, Gu-Trantien C, Lodewyckx JN, Duvillier H, Dedeurwaerder S, Bizet M, Defrance M, Fuks F, Bex F, Willard-Gallo K. FOXP1 is a regulator of quiescence in healthy human CD4+T cells and is constitutively repressed in T cells from patients with lymphoproliferative disorders. Eur J Immunol 2016; 47:168-179. [DOI: 10.1002/eji.201646373] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 09/07/2016] [Accepted: 11/03/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Soizic Garaud
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| | - Florence Roufosse
- Department of Internal Medicine; Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
- Institute for Medical Immunology; Université Libre de Bruxelles; Gosselies Belgium
| | - Pushpamali De Silva
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| | - Chunyan Gu-Trantien
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| | - Jean-Nicolas Lodewyckx
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| | - Hugues Duvillier
- Flow Cytometry Core Facility; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| | - Sarah Dedeurwaerder
- Laboratory of Cancer Epigenetics; Faculty of Medicine; Université Libre de Bruxelles; Brussels Belgium
| | - Martin Bizet
- Laboratory of Cancer Epigenetics; Faculty of Medicine; Université Libre de Bruxelles; Brussels Belgium
| | - Matthieu Defrance
- Laboratory of Cancer Epigenetics; Faculty of Medicine; Université Libre de Bruxelles; Brussels Belgium
| | - François Fuks
- Laboratory of Cancer Epigenetics; Faculty of Medicine; Université Libre de Bruxelles; Brussels Belgium
| | - Françoise Bex
- Institut de Recherches Microbiologiques J-M Wiame; Université Libre de Bruxelles; Brussels Belgium
| | - Karen Willard-Gallo
- Molecular Immunology Unit; Institut Jules Bordet; Université Libre de Bruxelles; Brussels Belgium
| |
Collapse
|
86
|
Jogdand GM, Mohanty S, Devadas S. Regulators of Tfh Cell Differentiation. Front Immunol 2016; 7:520. [PMID: 27933060 PMCID: PMC5120123 DOI: 10.3389/fimmu.2016.00520] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/08/2016] [Indexed: 12/14/2022] Open
Abstract
The follicular helper T (Tfh) cells help is critical for activation of B cells, antibody class switching, and germinal center (GC) formation. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), ICOS, programed death 1 (PD-1), B cell lymphoma 6 (BCL-6), and IL-21. They are involved in clearing infections and are adversely linked with autoimmune diseases and also have a role in viral replication as well as clearance. On the one hand, Tfh cells are generated from naive CD4+ T cells with sequential steps involving cytokine signaling (IL-21, IL-6, IL-12, activin A), migration, and positioning in the GC by CXCR5, surface receptors (ICOS/ICOSL, signaling lymphocyte activation molecule-associated protein/signaling lymphocyte activation molecule) as well as transcription factor (BCL-6, c-Maf, and signal transducer and activator of transcription 3) signaling and repressor miR155. On the other hand, Tfh generation is negatively regulated at specific steps of Tfh generation by specific cytokine (IL-2, IL-7), surface receptor (PD-1, CTLA-4), transcription factors B lymphocyte maturation protein 1, signal transducer and activator of transcription 5, T-bet, KLF-2 signaling, and repressor miR 146a. Interestingly, miR-17-92 and FOXO1 act as a positive as well as a negative regulator of Tfh differentiation depending on the time of expression and disease specificity. Tfh cells are also generated from the conversion of other effector T cells as exemplified by Th1 cells converting into Tfh during viral infection. The mechanistic details of effector T cells conversion into Tfh are yet to be clear. To manipulate Tfh cells for therapeutic implication and or for effective vaccination strategies, it is important to know positive and negative regulators of Tfh generation. Hence, in this review, we have highlighted and interlinked molecular signaling from cytokines, surface receptors, transcription factors, ubiquitin ligase, and microRNA as positive and negative regulators for Tfh differentiation.
Collapse
Affiliation(s)
- Gajendra M Jogdand
- T Cell and Immune Response, Infectious Disease Biology, Institute of Life Sciences , Bhubaneswar , India
| | - Suchitra Mohanty
- Tumor Virology Lab, Infectious Disease Biology, Institute of Life Sciences , Bhubaneswar , India
| | - Satish Devadas
- T Cell and Immune Response, Infectious Disease Biology, Institute of Life Sciences , Bhubaneswar , India
| |
Collapse
|
87
|
Olvera-García G, Aguilar-García T, Gutiérrez-Jasso F, Imaz-Rosshandler I, Rangel-Escareño C, Orozco L, Aguilar-Delfín I, Vázquez-Pérez JA, Zúñiga J, Pérez-Patrigeon S, Espinosa E. A transcriptome-based model of central memory CD4 T cell death in HIV infection. BMC Genomics 2016; 17:956. [PMID: 27875993 PMCID: PMC5120471 DOI: 10.1186/s12864-016-3308-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 11/17/2016] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Human central memory CD4 T cells are characterized by their capacity of proliferation and differentiation into effector memory CD4 T cells. Homeostasis of central memory CD4 T cells is considered a key factor sustaining the asymptomatic stage of Human Immunodeficiency Virus type 1 (HIV-1) infection, while progression to acquired immunodeficiency syndrome is imputed to central memory CD4 T cells homeostatic failure. We investigated if central memory CD4 T cells from patients with HIV-1 infection have a gene expression profile impeding proliferation and survival, despite their activated state. METHODS Using gene expression microarrays, we analyzed mRNA expression patterns in naive, central memory, and effector memory CD4 T cells from healthy controls, and naive and central memory CD4 T cells from patients with HIV-1 infection. Differentially expressed genes, defined by Log2 Fold Change (FC) ≥ |0.5| and Log (odds) > 0, were used in pathway enrichment analyses. RESULTS Central memory CD4 T cells from patients and controls showed comparable expression of differentiation-related genes, ruling out an effector-like differentiation of central memory CD4 T cells in HIV infection. However, 210 genes were differentially expressed in central memory CD4 T cells from patients compared with those from controls. Expression of 75 of these genes was validated by semi quantitative RT-PCR, and independently reproduced enrichment results from this gene expression signature. The results of functional enrichment analysis indicated movement to cell cycle phases G1 and S (increased CCNE1, MKI67, IL12RB2, ADAM9, decreased FGF9, etc.), but also arrest in G2/M (increased CHK1, RBBP8, KIF11, etc.). Unexpectedly, the results also suggested decreased apoptosis (increased CSTA, NFKBIA, decreased RNASEL, etc.). Results also suggested increased IL-1β, IFN-γ, TNF, and RANTES (CCR5) activity upstream of the central memory CD4 T cells signature, consistent with the demonstrated milieu in HIV infection. CONCLUSIONS Our findings support a model where progressive loss of central memory CD4 T cells in chronic HIV-1 infection is driven by increased cell cycle entry followed by mitotic arrest, leading to a non-apoptotic death pathway without actual proliferation, possibly contributing to increased turnover.
Collapse
Affiliation(s)
- Gustavo Olvera-García
- Department of Research in Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico
| | - Tania Aguilar-García
- Department of Research in Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico
| | - Fany Gutiérrez-Jasso
- Department of Research in Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico
| | - Iván Imaz-Rosshandler
- Computational Genomics Department, Instituto Nacional de Medicina Genómica, Periferico Sur 4809, Mexico City, Mexico
| | - Claudia Rangel-Escareño
- Computational Genomics Department, Instituto Nacional de Medicina Genómica, Periferico Sur 4809, Mexico City, Mexico
| | - Lorena Orozco
- Laboratory of Immunogenomics and Metabolic Diseases, Instituto Nacional de Medicina Genómica, Periferico Sur 4809, Mexico City, Mexico
| | - Irma Aguilar-Delfín
- Laboratory of Immunogenomics and Metabolic Diseases, Instituto Nacional de Medicina Genómica, Periferico Sur 4809, Mexico City, Mexico
| | - Joel A Vázquez-Pérez
- Department of Virology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico
| | - Joaquín Zúñiga
- Department of Research in Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico
| | - Santiago Pérez-Patrigeon
- Infectious Immunopathogenesis Laboratory, Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Avenida Vasco de Quiroga 15, Mexico City, Mexico
| | - Enrique Espinosa
- Department of Research in Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Mexico City, Mexico.
| |
Collapse
|
88
|
Oskay Halacli S. FOXP1 enhances tumor cell migration by repression of NFAT1 transcriptional activity in MDA-MB-231 cells. Cell Biol Int 2016; 41:102-110. [PMID: 27859969 DOI: 10.1002/cbin.10702] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 11/06/2016] [Indexed: 01/01/2023]
Abstract
Until now, forkhead box P1 (FOXP1) has been identified as a tumor suppressor in several correlation studies in breast cancer. Although FOXP1 is defined as a transcriptional repressor that interacts with other transcription factors in various mechanistic studies, there is no study that explains its repressor functions in breast cancer biology. This study demonstrated the repressor function of FOXP1 on nuclear factor of activated T cells (NFAT1) and the migratory effect of this repression in MDA-MB-231 breast cancer cells. Co-immunoprecipitation experiments were performed for the investigation of protein-protein interaction between two transcription factors. Protein-protein interaction on DNA was investigated with EMSA and transcriptional effects of FOXP1 on NFAT1, luciferase reporter assay was performed. Wound healing assay was used to analyze the effects of overexpression of FOXP1 on tumor cell migration. This study showed that FOXP1 has protein-protein interaction with NFAT1 on DNA and enhances breast cancer cell migration by repressing NFAT1 transcriptional activity and FOXP1 shows oncogenic function by regulating breast cancer cell motility.
Collapse
Affiliation(s)
- Sevil Oskay Halacli
- Department of Pediatric Immunology, Institute of Child Health, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| |
Collapse
|
89
|
Durek P, Nordström K, Gasparoni G, Salhab A, Kressler C, de Almeida M, Bassler K, Ulas T, Schmidt F, Xiong J, Glažar P, Klironomos F, Sinha A, Kinkley S, Yang X, Arrigoni L, Amirabad A, Ardakani F, Feuerbach L, Gorka O, Ebert P, Müller F, Li N, Frischbutter S, Schlickeiser S, Cendon C, Fröhler S, Felder B, Gasparoni N, Imbusch C, Hutter B, Zipprich G, Tauchmann Y, Reinke S, Wassilew G, Hoffmann U, Richter A, Sieverling L, Chang HD, Syrbe U, Kalus U, Eils J, Brors B, Manke T, Ruland J, Lengauer T, Rajewsky N, Chen W, Dong J, Sawitzki B, Chung HR, Rosenstiel P, Schulz M, Schultze J, Radbruch A, Walter J, Hamann A, Polansky J. Epigenomic Profiling of Human CD4+ T Cells Supports a Linear Differentiation Model and Highlights Molecular Regulators of Memory Development. Immunity 2016; 45:1148-1161. [DOI: 10.1016/j.immuni.2016.10.022] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 06/22/2016] [Accepted: 07/22/2016] [Indexed: 12/21/2022]
|
90
|
Sen DR, Kaminski J, Barnitz RA, Kurachi M, Gerdemann U, Yates KB, Tsao HW, Godec J, LaFleur MW, Brown FD, Tonnerre P, Chung RT, Tully DC, Allen TM, Frahm N, Lauer GM, Wherry EJ, Yosef N, Haining WN. The epigenetic landscape of T cell exhaustion. Science 2016; 354:1165-1169. [PMID: 27789799 DOI: 10.1126/science.aae0491] [Citation(s) in RCA: 646] [Impact Index Per Article: 80.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 10/07/2016] [Indexed: 12/12/2022]
Abstract
Exhausted T cells in cancer and chronic viral infection express distinctive patterns of genes, including sustained expression of programmed cell death protein 1 (PD-1). However, the regulation of gene expression in exhausted T cells is poorly understood. Here, we define the accessible chromatin landscape in exhausted CD8+ T cells and show that it is distinct from functional memory CD8+ T cells. Exhausted CD8+ T cells in humans and a mouse model of chronic viral infection acquire a state-specific epigenetic landscape organized into functional modules of enhancers. Genome editing shows that PD-1 expression is regulated in part by an exhaustion-specific enhancer that contains essential RAR, T-bet, and Sox3 motifs. Functional enhancer maps may offer targets for genome editing that alter gene expression preferentially in exhausted CD8+ T cells.
Collapse
Affiliation(s)
- Debattama R Sen
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Division of Medical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - James Kaminski
- Center for Computational Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - R Anthony Barnitz
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Makoto Kurachi
- Institute of Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Microbiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ulrike Gerdemann
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Kathleen B Yates
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Hsiao-Wei Tsao
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Jernej Godec
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Division of Medical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Martin W LaFleur
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Division of Medical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Flavian D Brown
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Division of Medical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Pierre Tonnerre
- Gastrointestinal Unit and Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Raymond T Chung
- Gastrointestinal Unit and Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Damien C Tully
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Boston, MA 02139, USA
| | - Todd M Allen
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Boston, MA 02139, USA
| | - Nicole Frahm
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Georg M Lauer
- Gastrointestinal Unit and Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - E John Wherry
- Institute of Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Microbiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nir Yosef
- Center for Computational Biology, University of California, Berkeley, Berkeley, CA 94720, USA. .,Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Boston, MA 02139, USA.,Department of Electrical Engineering and Computer Science, University of California, Berkeley, Berkeley, CA 94720, USA
| | - W Nicholas Haining
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA. .,Division of Pediatric Hematology and Oncology, Children's Hospital, Boston, MA 02115, USA.,Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| |
Collapse
|
91
|
Wang X, Sun J, Cui M, Zhao F, Ge C, Chen T, Yao M, Li J. Downregulation of FOXP1 Inhibits Cell Proliferation in Hepatocellular Carcinoma by Inducing G1/S Phase Cell Cycle Arrest. Int J Mol Sci 2016; 17:ijms17091501. [PMID: 27618020 PMCID: PMC5037778 DOI: 10.3390/ijms17091501] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/26/2016] [Accepted: 09/02/2016] [Indexed: 12/20/2022] Open
Abstract
Forkhead box P1 (FOXP1) belongs to a family of winged-helix transcription factors that are involved in the processes of cellular proliferation, differentiation, metabolism, and longevity. FOXP1 can affect cell proliferation and migratory ability in hepatocellular carcinoma (HCC) in vitro. However, little is known about the mechanism of FOXP1 in the proliferation of HCC cells. This study aimed to further explore the function of FOXP1 on the proliferation of HCC cells as well as the relevant mechanism involved. Western blot analysis, tumor xenograft models, and flow cytometry analysis were performed to elucidate the function of FOXP1 in the regulation of cell proliferation in human HCC. We observed that silencing FOXP1 significantly suppressed the growth ability of HCC cells both in vitro and in vivo. In addition, knockdown of FOXP1 induced G1/S phase arrest, and the expression of total and phosphorylated Rb (active type) as well as the levels of E2F1 were markedly decreased at 24 h; however, other proteins, including cyclin-dependent kinase (CDK) 4 and 6 and cyclin D1 did not show noticeable changes. In conclusion, downregulation of FOXP1 inhibits cell proliferation in hepatocellular carcinoma by inducing G1/S phase cell cycle arrest, and the decrease in phosphorylated Rb is the main contributor to this G1/S phase arrest.
Collapse
Affiliation(s)
- Xin Wang
- Shanghai Medical College, Fudan University, Shanghai 200032, China.
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Ji Sun
- Shanghai Medical College, Fudan University, Shanghai 200032, China.
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Meiling Cui
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Fangyu Zhao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Chao Ge
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Taoyang Chen
- Pathological Section, Qidong Liver Cancer Institute, Qidong 226200, China.
| | - Ming Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| | - Jinjun Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, 25/Ln 2200, Xietu Road, Shanghai 200032, China.
| |
Collapse
|
92
|
Wei H, Geng J, Shi B, Liu Z, Wang YH, Stevens AC, Sprout SL, Yao M, Wang H, Hu H. Cutting Edge: Foxp1 Controls Naive CD8+ T Cell Quiescence by Simultaneously Repressing Key Pathways in Cellular Metabolism and Cell Cycle Progression. THE JOURNAL OF IMMUNOLOGY 2016; 196:3537-41. [PMID: 27001958 DOI: 10.4049/jimmunol.1501896] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/29/2016] [Indexed: 12/31/2022]
Abstract
Previously we have shown that transcription factor Foxp1 plays an essential role in maintaining naive T cell quiescence; in the absence of Foxp1, mature naive CD8(+) T cells proliferate in direct response to homeostatic cytokine IL-7. In this study, we report that the deletion of Foxp1 in naive CD8(+) T cells leads to enhanced activation of the PI3K/Akt/mammalian target of rapamycin signaling pathway and its downstream cell growth and metabolism targets in response to IL-7. We found that Foxp1 directly regulates PI3K interacting protein 1, a negative regulator of PI3K. Additionally, we found that deletion of Foxp1 in naive CD8(+) T cells results in increased expression levels of E2fs, the critical components for cell cycle progression and proliferation, in a manner that is not associated with increased phosphorylation of retinoblastoma protein. Taken together, our studies suggest that Foxp1 enforces naive CD8(+) T cell quiescence by simultaneously repressing key pathways in both cellular metabolism and cell cycle progression.
Collapse
Affiliation(s)
- Hairong Wei
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Jianlin Geng
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Bi Shi
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Zhenghui Liu
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Yin-Hu Wang
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Anna C Stevens
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Stephanie L Sprout
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Min Yao
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Haikun Wang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hui Hu
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| |
Collapse
|
93
|
The artificial loss of Runx1 reduces the expression of quiescence-associated transcription factors in CD4 + T lymphocytes. Mol Immunol 2015; 68:223-33. [DOI: 10.1016/j.molimm.2015.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/20/2015] [Accepted: 08/25/2015] [Indexed: 12/11/2022]
|
94
|
Herek TA, Shew TD, Spurgin HN, Cutucache CE. Conserved Molecular Underpinnings and Characterization of a Role for Caveolin-1 in the Tumor Microenvironment of Mature T-Cell Lymphomas. PLoS One 2015; 10:e0142682. [PMID: 26566034 PMCID: PMC4643970 DOI: 10.1371/journal.pone.0142682] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 10/26/2015] [Indexed: 12/02/2022] Open
Abstract
Neoplasms of extra-thymic T-cell origin represent a rare and difficult population characterized by poor clinical outcome, aggressive presentation, and poorly defined molecular characteristics. Much work has been done to gain greater insights into distinguishing features among malignant subtypes, but there also exists a need to identify unifying characteristics to assist in rapid diagnosis and subsequent potential treatment. Herein, we investigated gene expression data of five different mature T-cell lymphoma subtypes (n = 187) and found 21 genes to be up- and down-regulated across all malignancies in comparison to healthy CD4+ and CD8+ T-cell controls (n = 52). From these results, we sought to characterize a role for caveolin-1 (CAV1), a gene with previous description in the progression of both solid and hematological tumors. Caveolin-1 was upregulated, albeit with a heterogeneous nature, across all mature T-cell lymphoma subtypes, a finding confirmed using immunohistochemical staining on an independent sampling of mature T-cell lymphoma biopsies (n = 65 cases). Further, stratifying malignant samples in accordance with high and low CAV1 expression revealed that higher expression of CAV1 in mature T-cell lymphomas is analogous with an enhanced inflammatory and invasive gene expression profile. Taken together, these results demonstrate a role for CAV1 in the tumor microenvironment of mature T-cell malignancies and point toward potential prognostic implications.
Collapse
Affiliation(s)
- Tyler A. Herek
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, United States of America
| | - Timothy D. Shew
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, United States of America
| | - Heather N. Spurgin
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, United States of America
| | - Christine E. Cutucache
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, United States of America
- * E-mail:
| |
Collapse
|
95
|
Waugh KA, Leach SM, Slansky JE. Targeting Transcriptional Regulators of CD8+ T Cell Dysfunction to Boost Anti-Tumor Immunity. Vaccines (Basel) 2015; 3:771-802. [PMID: 26393659 PMCID: PMC4586477 DOI: 10.3390/vaccines3030771] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/09/2015] [Accepted: 09/10/2015] [Indexed: 02/07/2023] Open
Abstract
Transcription is a dynamic process influenced by the cellular environment: healthy, transformed, and otherwise. Genome-wide mRNA expression profiles reflect the collective impact of pathways modulating cell function under different conditions. In this review we focus on the transcriptional pathways that control tumor infiltrating CD8+ T cell (TIL) function. Simultaneous restraint of overlapping inhibitory pathways may confer TIL resistance to multiple mechanisms of suppression traditionally referred to as exhaustion, tolerance, or anergy. Although decades of work have laid a solid foundation of altered transcriptional networks underlying various subsets of hypofunctional or “dysfunctional” CD8+ T cells, an understanding of the relevance in TIL has just begun. With recent technological advances, it is now feasible to further elucidate and utilize these pathways in immunotherapy platforms that seek to increase TIL function.
Collapse
Affiliation(s)
- Katherine A Waugh
- University of Colorado School of Medicine, 12800 East 19th Avenue, Mail Stop 8333, Aurora, CO 80045, USA.
| | - Sonia M Leach
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO 80206, USA.
| | - Jill E Slansky
- University of Colorado School of Medicine, 12800 East 19th Avenue, Mail Stop 8333, Aurora, CO 80045, USA.
| |
Collapse
|
96
|
Abe A, Tani-ichi S, Shitara S, Cui G, Yamada H, Miyachi H, Kitano S, Hara T, Abe R, Yoshikai Y, Ikuta K. An Enhancer of the IL-7 Receptor α-Chain Locus Controls IL-7 Receptor Expression and Maintenance of Peripheral T Cells. THE JOURNAL OF IMMUNOLOGY 2015; 195:3129-38. [PMID: 26336149 DOI: 10.4049/jimmunol.1302447] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 07/28/2015] [Indexed: 12/24/2022]
Abstract
The IL-7R plays critical roles in lymphocyte development and homeostasis. Although IL-7R expression is strictly regulated during lymphocyte differentiation and the immune response, little is known regarding its in vivo regulation. To address this issue, we established a mouse line with targeted deletion of the conserved non-coding sequence 1 (CNS1) element found 3.6 kb upstream of the IL-7Rα promoter. We report that IL-7Rα is expressed normally on T and B cells in thymus and bone marrow of CNS1(-/-) mice except for in regulatory T cells. In contrast, these mice show reduced IL-7Rα expression in conventional CD4 and CD8 T cells as well as regulatory T, NKT, and γδ T cells in the periphery. CD4 T cells of CNS1(-/-) mice showed IL-7Rα upregulation in the absence of growth factors and IL-7Rα downregulation by IL-7 or TCR stimulation, although the expression levels were lower than those in control mice. Naive CD4 and CD8 T cells of CNS1(-/-) mice show attenuated survival by culture with IL-7 and reduced homeostatic proliferation after transfer into lymphopenic hosts. CNS1(-/-) mice exhibit impaired maintenance of Ag-stimulated T cells. Furthermore, IL-7Rα upregulation by glucocorticoids and TNF-α was abrogated in CNS1(-/-) mice. This work demonstrates that the CNS1 element controls IL-7Rα expression and maintenance of peripheral T cells, suggesting differential regulation of IL-7Rα expression between central and peripheral lymphoid organs.
Collapse
Affiliation(s)
- Akifumi Abe
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan; Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Shizue Tani-ichi
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Soichiro Shitara
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan; Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Guangwei Cui
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan; Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Hisataka Yamada
- Division of Host Defense, Network Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hitoshi Miyachi
- Reproductive Engineering Team, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan; and
| | - Satsuki Kitano
- Reproductive Engineering Team, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan; and
| | - Takahiro Hara
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Ryo Abe
- Division of Immunobiology, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan
| | - Yasunobu Yoshikai
- Division of Host Defense, Network Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Koichi Ikuta
- Laboratory of Biological Protection, Department of Biological Responses, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan;
| |
Collapse
|
97
|
Park BV, Pan F. Metabolic regulation of T cell differentiation and function. Mol Immunol 2015; 68:497-506. [PMID: 26277275 DOI: 10.1016/j.molimm.2015.07.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 06/27/2015] [Accepted: 07/21/2015] [Indexed: 12/24/2022]
Abstract
Upon encountering pathogens, T cells mount immune responses by proliferating, increasing cellular mass and differentiating. These cellular changes impose significant energetic challenges on T cells. It was believed that TCR and cytokine-mediated signaling are dominant dictators of T cell-mediated immune responses. Recently, it was recognized that T cells utilize metabolic transporters and metabolic sensors that allow them to rapidly respond to nutrient-limiting inflammatory environments. Metabolic sensors allow T cells to find a balance between energy consumption (anabolic metabolism) and production (catabolic metabolism) in order to mount effective immune responses. Also, metabolic regulators interact with cytokine-dependent transcriptional regulators, suggesting a more integrative and advanced model of T cell activation and differentiation. In this review, we will discuss recent discoveries regarding the roles of metabolic regulators in effector and memory T cell development and their interaction with canonical transcription factors.
Collapse
Affiliation(s)
- Benjamin V Park
- Immunology and Hematopoiesis Division, Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Fan Pan
- Immunology and Hematopoiesis Division, Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
| |
Collapse
|
98
|
Abstract
Most currently available vaccines rely on the induction of long-lasting protective humoral immune responses by memory B cells and plasma cells. Antibody responses against most antigens require interactions between antigen-specific B cells and CD4(+) T cells. Follicular helper T cells (TFH cells) are specialized subset of T cells that provide help to B cells and are essential for germinal center formation, affinity maturation, and the development of high-affinity antibodies. TFH-cell differentiation is a multistage process involving B-cell lymphoma 6 and other transcription factors, cytokines, and costimulation through inducible costimulator (ICOS) and several other molecules. This article reviews recent advances in our understanding of TFH cell biology, including their differentiation, transcriptional regulation, and function.
Collapse
Affiliation(s)
- Wataru Ise
- a Immunology Frontier Research Center , Osaka University , Osaka 565-0871 , Japan
| |
Collapse
|
99
|
Miyazaki M, Miyazaki K, Chen S, Chandra V, Wagatsuma K, Agata Y, Rodewald HR, Saito R, Chang AN, Varki N, Kawamoto H, Murre C. The E-Id protein axis modulates the activities of the PI3K-AKT-mTORC1-Hif1a and c-myc/p19Arf pathways to suppress innate variant TFH cell development, thymocyte expansion, and lymphomagenesis. Genes Dev 2015; 29:409-25. [PMID: 25691468 PMCID: PMC4335296 DOI: 10.1101/gad.255331.114] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Miyazaki et al. show that Id2 and Id3 suppress the development and expansion of innate variant TFH cells by acting upstream of the Hif1a/Foxo/AKT/mTORC1 pathway as well as the c-myc/p19Arf module. Mice depleted for Id2 and Id3 expression developed colitis and αβ T-cell lymphomas, and the transcription signatures of Id2- and Id3-depleted lymphomas revealed similarities to genetic deficiencies associated with Burkitt lymphoma. It is now well established that the E and Id protein axis regulates multiple steps in lymphocyte development. However, it remains unknown how E and Id proteins mechanistically enforce and maintain the naïve T-cell fate. Here we show that Id2 and Id3 suppressed the development and expansion of innate variant follicular helper T (TFH) cells. Innate variant TFH cells required major histocompatibility complex (MHC) class I-like signaling and were associated with germinal center B cells. We found that Id2 and Id3 induced Foxo1 and Foxp1 expression to antagonize the activation of a TFH transcription signature. We show that Id2 and Id3 acted upstream of the Hif1a/Foxo/AKT/mTORC1 pathway as well as the c-myc/p19Arf module to control cellular expansion. We found that mice depleted for Id2 and Id3 expression developed colitis and αβ T-cell lymphomas. Lymphomas depleted for Id2 and Id3 expression displayed elevated levels of c-myc, whereas p19Arf abundance declined. Transcription signatures of Id2- and Id3-depleted lymphomas revealed similarities to genetic deficiencies associated with Burkitt lymphoma. We propose that, in response to antigen receptor and/or cytokine signaling, the E–Id protein axis modulates the activities of the PI3K–AKT–mTORC1–Hif1a and c-myc/p19Arf pathways to control cellular expansion and homeostatic proliferation.
Collapse
Affiliation(s)
- Masaki Miyazaki
- Department of Molecular Biology, University of California at San Diego, La Jolla, California 92093, USA
| | - Kazuko Miyazaki
- Department of Molecular Biology, University of California at San Diego, La Jolla, California 92093, USA
| | - Shuwen Chen
- Department of Molecular Biology, University of California at San Diego, La Jolla, California 92093, USA
| | - Vivek Chandra
- Department of Molecular Biology, University of California at San Diego, La Jolla, California 92093, USA
| | - Keisuke Wagatsuma
- Department of Biochemistry and Molecular Biology, Shiga University of Medical School, Shiga 520-2192, Japan
| | - Yasutoshi Agata
- Department of Biochemistry and Molecular Biology, Shiga University of Medical School, Shiga 520-2192, Japan
| | - Hans-Reimer Rodewald
- Division of Cellular Immunology, German Cancer Research Center, D-69120 Heidelberg, Germany
| | - Rintaro Saito
- Department of Medicine, University of California at San Diego, La Jolla, California 92093, USA
| | - Aaron N Chang
- Center for Computational Biology, Institute for Genomic Medicine, University of California at San Diego, La Jolla, California 92093, USA
| | - Nissi Varki
- Department of Pathology, University of California at San Diego, La Jolla, California 92093, USA
| | - Hiroshi Kawamoto
- Department of Immunology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Cornelis Murre
- Department of Molecular Biology, University of California at San Diego, La Jolla, California 92093, USA;
| |
Collapse
|
100
|
Wang YH, Yang W, Yang JB, Jia YJ, Tang W, Gershwin ME, Ridgway WM, Lian ZX. Systems biologic analysis of T regulatory cells genetic pathways in murine primary biliary cirrhosis. J Autoimmun 2015; 59:26-37. [PMID: 25701076 DOI: 10.1016/j.jaut.2015.01.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 01/30/2015] [Indexed: 01/05/2023]
Abstract
CD4(+)Foxp3(+) regulatory T cells (Tregs) play a non-redundant role in control of excessive immune responses, and defects in Tregs have been shown both in patients and murine models of primary biliary cirrhosis (PBC), a progressive autoimmune biliary disease. Herein, we took advantage of a murine model of PBC, the dominant negative transforming growth factor β receptor II (dnTGFβRII) mice, to assess Treg genetic defects and their functional effects in PBC. By using high-resolution microarrays with verification by PCR and protein expression, we found profound and wide-ranging differences between dnTGFβRII and normal, wild type Tregs. Critical transcription factors were down-regulated including Eos, Ahr, Klf2, Foxp1 in dnTGFβRII Tregs. Functionally, dnTGFβRII Tregs expressed an activated, pro-inflammatory phenotype with upregulation of Ccl5, Granzyme B and IFN-γ. Genetic pathway analysis suggested that the primary effect of loss of TGFβ pathway signaling was to down regulate immune regulatory processes, with a secondary upregulation of inflammatory processes. These findings provide new insights into T regulatory genetic defects; aberrations of the identified genes or genetic pathways should be investigated in human PBC Tregs. This approach which takes advantage of biologic pathway analysis illustrates the ability to identify genes/pathways that are affected both independently and dependent on abnormalities in TGFβ signaling. Such approaches will become increasingly useful in human autoimmunity.
Collapse
Affiliation(s)
- Yin-Hu Wang
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Wei Yang
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Jing-Bo Yang
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Yan-Jie Jia
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - Wei Tang
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China.
| | - M Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, Davis, CA 95616, USA.
| | - William M Ridgway
- Division of Immunology, Allergy and Rheumatology, University of Cincinnati, Cincinnati, OH 45220, USA.
| | - Zhe-Xiong Lian
- Liver Immunology Laboratory, Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; Innovation Center for Cell Biology, Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui 230027, China.
| |
Collapse
|