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Masson F, Minnich M, Olshansky M, Bilic I, Mount AM, Kallies A, Speed TP, Busslinger M, Nutt SL, Belz GT. Id2-mediated inhibition of E2A represses memory CD8+ T cell differentiation. THE JOURNAL OF IMMUNOLOGY 2013; 190:4585-94. [PMID: 23536629 DOI: 10.4049/jimmunol.1300099] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The transcription factor inhibitor of DNA binding (Id)2 modulates T cell fate decisions, but the molecular mechanism underpinning this regulation is unclear. In this study we show that loss of Id2 cripples effector differentiation and instead programs CD8(+) T cells to adopt a memory fate with increased Eomesodermin and Tcf7 expression. We demonstrate that Id2 restrains CD8(+) T cell memory differentiation by inhibiting E2A-mediated direct activation of Tcf7 and that Id2 expression level mirrors T cell memory recall capacity. As a result of the defective effector differentiation, Id2-deficient CD8(+) T cells fail to induce sufficient Tbx21 expression to generate short-lived effector CD8(+) T cells. Our findings reveal that the Id2/E2A axis orchestrates T cell differentiation through the induction or repression of downstream transcription factors essential for effector and memory T cell differentiation.
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102
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Cretney E, Kallies A, Nutt SL. Differentiation and function of Foxp3+ effector regulatory T cells. Trends Immunol 2013; 34:74-80. [DOI: 10.1016/j.it.2012.11.002] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 11/04/2012] [Accepted: 11/05/2012] [Indexed: 02/06/2023]
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103
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Abraham RS, Albanesi C, Alevizos I, Anguita J, Anstead GM, Aranow C, Austin HA, Babu S, Ballow MC, Balow JE, Barnidge DR, Belmont JW, Belz GT, Ben-Yehuda D, Berek C, Beukelman T, Bieber T, Bijlsma JW, Bleesing JJ, Blutt SE, Bohle B, Borzova E, Boyaka PN, Knut B, Bustamante J, Buttgereit F, Byrne M, Calder VL, Carneiro-Sampaio M, Carotta S, Casanova JL, Cavacini LA, Chan ES, Chinen J, Chitnis T, Cho M, Christopher-Stine L, Cope AP, Corry DB, Cottrell T, Coutinho A, Craveiro M, Cron RQ, Cuellar-Rodriguez J, Dalakas MC, de Barros SC, Devlin BH, Diamond B, Dispenzieri A, Du Clos TW, Dupuis-Boisson S, Eagar TN, Edhegard KD, Eisenbarth GS, Elmets CA, Erkan D, Feinberg MB, Fikrig E, Fleisher TA, Fontenot AP, Franco LM, Freeman AF, Frew AJ, Friedman T, Fujihashi K, Gadina M, Galli SJ, Gaspar HB, Gatt ME, Gershwin ME, Ghoreschi K, Gillespie SL, Goronzy JJ, Grattan CE, Greenspan NS, Grunebaum E, Haeberli G, Hall RP, Hamilton RG, Harriman GR, Hasni SA, Helbling A, Hingorani M, Holland SM, Hruz PL, Illei G, Imboden JB, Izraeli S, Jaffe ES, Jagobi C, Jalkanen S, Jetanalin P, Jouanguy E, June CH, Kallies A, Kaufmann SH, Kavanaugh A, Khan S, Kheradmand F, Khoury SJ, Koretzky GA, Korngold R, Kovalszki A, Kuhns DB, Kyle RA, Lanza IR, Laurence A, Lee SJ, Lenardo MJ, Levinson AI, Levy O, Lewis DB, Lewis DE, Lightman SL, Lockshin MD, Lotze MT, Luong A, Mackay M, Malo JL, Maltzman JS, Mannon PJ, Manns MP, Markert ML, McCarthy EA, McDonald DR, McGhee JR, Melby PC, Metcalfe DD, Metz M, Miller SD, Mitchell AL, Mittal S, Miyara M, Mold C, Moller DR, Mueller SN, Müller UR, Murphy PM, Noel P, Notarangelo L, Nutman TB, Nutt SL, Oliveira JB, Olson CM, O'Shea JJ, Pai SY, Pandit L, Paul ME, Pearce SH, Peterson EJ, Picard C, Pichler WJ, Pittaluga S, Puel A, Radbruch A, Reece ST, Reveille JD, Rich RR, Rivat C, Robinson BW, Rodgers JR, Roifman CM, Rosen A, Rosenbaum JT, Rouse BT, Rowley SD, Sakaguchi S, Salmi M, Schroeder HW, Seibel MJ, Selmi C, Shafer WM, Shah PK, Shankar S, Shaw AR, Shearer WT, Sheikh J, Siegel R, Simon A, Simonian PL, Smith GP, Smith JR, Snow AL, Stephens DS, Stone JH, Straumann A, Su HC, Swainson L, Szymanska-Mroczek E, Taylor N, Thrasher AJ, Timares L, Torres RM, Uzel G, van der Meer JW, van der Hilst JC, Varga J, Waldman M, Weiser P, Weller PF, Weyand CM, Whiteside TL, Wigley FM, Winchester RJ, Wing K, Wood K, Xu H, Zhang SY, Zimmermann VS. List of contributors. Clin Immunol 2013. [DOI: 10.1016/b978-0-7234-3691-1.09995-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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104
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Karnowski A, Chevrier S, Belz GT, Mount A, Emslie D, D'Costa K, Tarlinton DM, Kallies A, Corcoran LM. B and T cells collaborate in antiviral responses via IL-6, IL-21, and transcriptional activator and coactivator, Oct2 and OBF-1. ACTA ACUST UNITED AC 2012; 209:2049-64. [PMID: 23045607 PMCID: PMC3478936 DOI: 10.1084/jem.20111504] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Transcriptional activator Oct2 and cofactor OBF-1 regulate B cell IL-6 to induce T cell production of IL-21, to support Tfh cell development in antiviral immunity. A strong humoral response to infection requires the collaboration of several hematopoietic cell types that communicate via antigen presentation, surface coreceptors and their ligands, and secreted factors. The proinflammatory cytokine IL-6 has been shown to promote the differentiation of activated CD4+ T cells into T follicular helper cells (TFH cells) during an immune response. TFH cells collaborate with B cells in the formation of germinal centers (GCs) during T cell–dependent antibody responses, in part through secretion of critical cytokines such as IL-21. In this study, we demonstrate that loss of either IL-6 or IL-21 has marginal effects on the generation of TFH cells and on the formation of GCs during the response to acute viral infection. However, mice lacking both IL-6 and IL-21 were unable to generate a robust TFH cell–dependent immune response. We found that IL-6 production in follicular B cells in the draining lymph node was an important early event during the antiviral response and that B cell–derived IL-6 was necessary and sufficient to induce IL-21 from CD4+ T cells in vitro and to support TFH cell development in vivo. Finally, the transcriptional activator Oct2 and its cofactor OBF-1 were identified as regulators of Il6 expression in B cells.
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105
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Jeelall YS, Wang JQ, Law HD, Domaschenz H, Fung HKH, Kallies A, Nutt SL, Goodnow CC, Horikawa K. Human lymphoma mutations reveal CARD11 as the switch between self-antigen-induced B cell death or proliferation and autoantibody production. ACTA ACUST UNITED AC 2012; 209:1907-17. [PMID: 23027925 PMCID: PMC3478930 DOI: 10.1084/jem.20112744] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
CARD11 signaling determines whether antigen stimulation induces B cells to proliferate or die. Self-tolerance and immunity are actively acquired in parallel through a poorly understood ability of antigen receptors to switch between signaling death or proliferation of antigen-binding lymphocytes in different contexts. It is not known whether this tolerance-immunity switch requires global rewiring of the signaling apparatus or if it can arise from a single molecular change. By introducing individual CARD11 mutations found in human lymphomas into antigen-activated mature B lymphocytes in mice, we find here that lymphoma-derived CARD11 mutations switch the effect of self-antigen from inducing B cell death into T cell–independent proliferation, Blimp1-mediated plasmablast differentiation, and autoantibody secretion. Our findings demonstrate that regulation of CARD11 signaling is a critical switch governing the decision between death and proliferation in antigen-stimulated mature B cells and that mutations in this switch represent a powerful initiator for aberrant B cell responses in vivo.
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106
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Lüthje K, Kallies A, Shimohakamada Y, Belz GT, Light A, Tarlinton DM, Nutt SL. The development and fate of follicular helper T cells defined by an IL-21 reporter mouse. Nat Immunol 2012; 13:491-8. [DOI: 10.1038/ni.2261] [Citation(s) in RCA: 265] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 02/13/2012] [Indexed: 12/13/2022]
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107
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Hagn M, Belz GT, Kallies A, Sutton VR, Thia KY, Tarlinton DM, Hawkins ED, Trapani JA. Activated mouse B cells lack expression of granzyme B. THE JOURNAL OF IMMUNOLOGY 2012; 188:3886-92. [PMID: 22427643 DOI: 10.4049/jimmunol.1103285] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recently, it has been reported that human B cells express and secrete the cytotoxic protease granzyme B (GrB) after stimulation with IL-21 and BCR cross-linking. To date, there are few clues on the function of GrB in B cell biology. As experimental transgenic murine systems should provide insights into these issues, we assayed for GrB in C57BL/6 B cells using an extensive array of physiologically relevant stimuli but were unable to detect either GrB expression or its proteolytic activity, even when Ag-specific transgenic BCRs were engaged. Similar results were also obtained with B cells from DBA/2, CBA, or BALB/c mice. In vivo, infection with either influenza virus or murine γ-herpesvirus induced the expected expression of GrB in CTLs, but not in B cell populations. We also investigated a possible role of GrB on the humoral immune response to the model Ag 4-hydroxy-3-nitrophenylacetyl-keyhole limpet hemocyanin, but GrB-deficient mice produced normal amounts of Ab with typical affinity maturation and a heightened secondary response, demonstrating conclusively the redundancy of GrB for Ab responses. Our results highlight the complex evolutionary differences that have shaped the immune systems of mice and humans. The physiological consequences of GrB expression in human B cells remain unclear, and the current study suggests that experimental mouse models will not be helpful in addressing this issue.
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108
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Chang PP, Barral P, Fitch J, Pratama A, Ma CS, Kallies A, Hogan JJ, Cerundolo V, Tangye SG, Bittman R, Nutt SL, Brink R, Godfrey DI, Batista FD, Vinuesa CG. Identification of Bcl-6-dependent follicular helper NKT cells that provide cognate help for B cell responses. Nat Immunol 2011; 13:35-43. [PMID: 22120117 DOI: 10.1038/ni.2166] [Citation(s) in RCA: 217] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 10/18/2011] [Indexed: 12/13/2022]
Abstract
Lipid antigens trigger help from natural killer T cells (NKT cells) for B cells, and direct conjugation of lipid agonists to antigen profoundly augments antibody responses. Here we show that in vivo, NKT cells engaged in stable and prolonged cognate interactions with B cells and induced the formation of early germinal centers. Mouse and human NKT cells formed CXCR5(+)PD-1(hi) follicular helper NKT cells (NKT(FH) cells), and this process required expression of the transcriptional repressor Bcl-6, signaling via the coreceptor CD28 and interaction with B cells. NKT(FH) cells provided direct cognate help to antigen-specific B cells that was dependent on interleukin 21 (IL-21). Unlike T cell-dependent germinal centers, those driven by NKT(FH) cells did not generate long-lived plasma cells. Our results demonstrate the existence of a Bcl-6-dependent subset of NKT cells specialized in providing help to B cells.
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109
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Barbara Bathke LH, Gilles S, Traidl-Hoffmann C, Luber CA, Fejer G, Freudenberg MA, Davey GM, Vremec D, Kallies A, Wu L, Shortman K, Chaplin P, Suter M, O‘Keeffe M, Hochrein H. PS2-006. Murine CD8α+ DCs and human CD141+ DCs produce large amounts of IFN-λ in response to dsRNA or DNA viruses. Cytokine 2011. [DOI: 10.1016/j.cyto.2011.07.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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110
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Linterman MA, Pierson W, Lee SK, Kallies A, Kawamoto S, Rayner TF, Srivastava M, Divekar DP, Beaton L, Hogan JJ, Fagarasan S, Liston A, Smith KGC, Vinuesa CG. Foxp3+ follicular regulatory T cells control the germinal center response. Nat Med 2011; 17:975-82. [PMID: 21785433 PMCID: PMC3182542 DOI: 10.1038/nm.2425] [Citation(s) in RCA: 977] [Impact Index Per Article: 75.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 06/27/2011] [Indexed: 12/12/2022]
Abstract
Follicular helper (T(FH)) cells provide crucial signals to germinal center B cells undergoing somatic hypermutation and selection that results in affinity maturation. Tight control of T(FH) numbers maintains self tolerance. We describe a population of Foxp3(+)Blimp-1(+)CD4(+) T cells constituting 10-25% of the CXCR5(high)PD-1(high)CD4(+) T cells found in the germinal center after immunization with protein antigens. These follicular regulatory T (T(FR)) cells share phenotypic characteristics with T(FH) and conventional Foxp3(+) regulatory T (T(reg)) cells yet are distinct from both. Similar to T(FH) cells, T(FR) cell development depends on Bcl-6, SLAM-associated protein (SAP), CD28 and B cells; however, T(FR) cells originate from thymic-derived Foxp3(+) precursors, not naive or T(FH) cells. T(FR) cells are suppressive in vitro and limit T(FH) cell and germinal center B cell numbers in vivo. In the absence of T(FR) cells, an outgrowth of non-antigen-specific B cells in germinal centers leads to fewer antigen-specific cells. Thus, the T(FH) differentiation pathway is co-opted by T(reg) cells to control the germinal center response.
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111
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Jackson JT, Hu Y, Liu R, Masson F, D'Amico A, Carotta S, Xin A, Camilleri MJ, Mount AM, Kallies A, Wu L, Smyth GK, Nutt SL, Belz GT. Id2 expression delineates differential checkpoints in the genetic program of CD8α+ and CD103+ dendritic cell lineages. EMBO J 2011; 30:2690-704. [PMID: 21587207 PMCID: PMC3155298 DOI: 10.1038/emboj.2011.163] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 04/28/2011] [Indexed: 01/25/2023] Open
Abstract
Dendritic cells (DCs) have critical roles in the induction of the adaptive immune response. The transcription factors Id2, Batf3 and Irf-8 are required for many aspects of murine DC differentiation including development of CD8α(+) and CD103(+) DCs. How they regulate DC subset specification is not completely understood. Using an Id2-GFP reporter system, we show that Id2 is broadly expressed in all cDC subsets with the highest expression in CD103(+) and CD8α(+) lineages. Notably, CD103(+) DCs were the only DC able to constitutively cross-present cell-associated antigens in vitro. Irf-8 deficiency affected loss of development of virtually all conventional DCs (cDCs) while Batf3 deficiency resulted in the development of Sirp-α(-) DCs that had impaired survival. Exposure to GM-CSF during differentiation induced expression of CD103 in Id2-GFP(+) DCs. It did not restore cross-presenting capacity to Batf3(-/-) or CD103(-)Sirp-α(-)DCs in vitro. Thus, Irf-8 and Batf3 regulate distinct stages in DC differentiation during the development of cDCs. Genetic mapping DC subset differentiation using Id2-GFP may have broad implications in understanding the interplay of DC subsets during protective and pathological immune responses.
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112
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Lauterbach H, Bathke B, Gilles S, Traidl-Hoffmann C, Luber C, Fejer G, Freudenberg M, Davey G, Vremec D, Kallies A, Wu L, Shortman K, Chaplin P, Suter M, O‘Keeffe M, Hochrein H. Murine CD8α+ DCs and human BDCA3+ DCs produce large amounts of IFN-λ in response to poly IC and DNA viruses (154.6). THE JOURNAL OF IMMUNOLOGY 2011. [DOI: 10.4049/jimmunol.186.supp.154.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Dendritic cells (DCs) can be segregated into various subsets based on phenotypic and functional differences. Whereas plasmacytoid DCs are known for their type I interferon (IFN) producing capacity, conventional (c) DCs are better known for their roles in T cell homeostasis and priming. Among cDCs the CD8α+ subset is especially efficient in producing IL-12p70 and the induction of immunity against various pathogens and cancer. Here, we reveal a new hallmark function of murine CD8α+ cDCs and their human BDCA3+ counterparts, namely the production of large amounts of IFN-lambda (IFN-λ, also termed IL-28/29) upon stimulation with poly IC. IFN-lambdas are potent immunomodulatory and antiviral cytokines. We demonstrate that the production of IFN-λ upon poly IC injection in vivo depends on hematopoietic cells and the presence of toll-like receptor (TLR)3, interferon regulatory factor (IRF)3, IRF7, IFN-IR, Fms-related tyrosine kinase 3 ligand (FL) and IRF8 but not on myeloid differentiation factor 88 (MyD88), Rig like helicases or lymphocytes. Furthermore, we show that both CD8α+ cDCs and plasmacytoid DCs produce large amounts of IFN-λ in response to HSV-1 or parapoxvirus. Thus, IFN-λ production in response to poly IC is a novel hallmark function of mouse CD8α+ cDCs and their human equivalents.
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113
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Cretney E, Xin A, Shi W, Minnich M, Masson F, Miasari M, Belz GT, Smyth GK, Busslinger M, Nutt SL, Kallies A. The transcription factors Blimp-1 and IRF4 jointly control the differentiation and function of effector regulatory T cells. Nat Immunol 2011; 12:304-11. [DOI: 10.1038/ni.2006] [Citation(s) in RCA: 443] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Accepted: 02/04/2011] [Indexed: 12/13/2022]
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Xin A, Nutt SL, Belz GT, Kallies A. Blimp1: driving terminal differentiation to a T. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 780:85-100. [PMID: 21842367 DOI: 10.1007/978-1-4419-5632-3_8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
B lymphocyte maturation-induced protein-1 (Blimp1) is a transcriptional repressor expressed in diverse cell types. In the adaptive immune system, Blimp1 is expressed in lymphocytes that have undergone effector differentiation. Blimp1 is a master regulator of plasma cell differentiation and plays important roles in controlling T cell homeostasis and effector differentiation. Blimp1 can be induced by a variety of cytokines including IL-2, IL-4, IL-12, and IL-21 in addition to TCR and co-stimulatory signals. Blimp1-deficient mice develop spontaneous inflammatory disease mediated by infiltration of activated T cells into tissues. During immune responses Blimp1 is required for the differentiation of plasma cells as well as short-lived CD8(+) cytotoxic T cells. Mounting evidence suggests that Blimp1 plays a common role in the terminal differentiation of multiple cell subsets.
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115
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116
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Lauterbach H, Bathke B, Gilles S, Traidl-Hoffmann C, Luber CA, Fejer G, Freudenberg MA, Davey GM, Vremec D, Kallies A, Wu L, Shortman K, Chaplin P, Suter M, O’Keeffe M, Hochrein H. Mouse CD8alpha+ DCs and human BDCA3+ DCs are major producers of IFN-lambda in response to poly IC. J Exp Med 2010; 207:2703-17. [PMID: 20975040 PMCID: PMC2989774 DOI: 10.1084/jem.20092720] [Citation(s) in RCA: 214] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 09/30/2010] [Indexed: 12/12/2022] Open
Abstract
Polyinosinic:polycytidylic acid (poly IC), a double-stranded RNA, is an effective adjuvant in vivo. IFN-λs (also termed IL-28/29) are potent immunomodulatory and antiviral cytokines. We demonstrate that poly IC injection in vivo induces large amounts of IFN-λ, which depended on hematopoietic cells and the presence of TLR3 (Toll-like receptor 3), IRF3 (IFN regulatory factor 3), IRF7, IFN-I receptor, Fms-related tyrosine kinase 3 ligand (FL), and IRF8 but not on MyD88 (myeloid differentiation factor 88), Rig-like helicases, or lymphocytes. Upon poly IC injection in vivo, the IFN-λ production by splenocytes segregated with cells phenotypically resembling CD8α(+) conventional dendritic cells (DCs [cDCs]). In vitro experiments revealed that CD8α(+) cDCs were the major producers of IFN-λ in response to poly IC, whereas both CD8α(+) cDCs and plasmacytoid DCs produced large amounts of IFN-λ in response to HSV-1 or parapoxvirus. The nature of the stimulus and the cytokine milieu determined whether CD8α(+) cDCs produced IFN-λ or IL-12p70. Human DCs expressing BDCA3 (CD141), which is considered to be the human counterpart of murine CD8α(+) DCs, also produced large amounts of IFN-λ upon poly IC stimulation. Thus, IFN-λ production in response to poly IC is a novel function of mouse CD8α(+) cDCs and their human equivalents.
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117
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Belz GT, Kallies A. Effector and memory CD8+ T cell differentiation: toward a molecular understanding of fate determination. Curr Opin Immunol 2010; 22:279-85. [PMID: 20434894 DOI: 10.1016/j.coi.2010.03.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Accepted: 03/17/2010] [Indexed: 02/03/2023]
Abstract
CD8(+) T cells play a key role in protecting the body against invading microorganisms. Their capacity to control infection relies on the development of peripheral effector and memory T cells. Much of our current knowledge has been gained by tracking alterations of the phenotype of CD8(+) T cells but the molecular understanding of the events that underpin the emergence of heterogeneous effector and memory CD8(+) T cells in response to infection has remained limited. This review focuses on the recent progress in our understanding of the molecular wiring of this differentiation process.
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118
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Zotos D, Coquet JM, Zhang Y, Light A, D'Costa K, Kallies A, Corcoran LM, Godfrey DI, Toellner KM, Smyth MJ, Nutt SL, Tarlinton DM. IL-21 regulates germinal center B cell differentiation and proliferation through a B cell-intrinsic mechanism. ACTA ACUST UNITED AC 2010; 207:365-78. [PMID: 20142430 PMCID: PMC2822601 DOI: 10.1084/jem.20091777] [Citation(s) in RCA: 592] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Germinal centers (GCs) are sites of B cell proliferation, somatic hypermutation, and selection of variants with improved affinity for antigen. Long-lived memory B cells and plasma cells are also generated in GCs, although how B cell differentiation in GCs is regulated is unclear. IL-21, secreted by T follicular helper cells, is important for adaptive immune responses, although there are conflicting reports on its target cells and mode of action in vivo. We show that the absence of IL-21 signaling profoundly affects the B cell response to protein antigen, reducing splenic and bone marrow plasma cell formation and GC persistence and function, influencing their proliferation, transition into memory B cells, and affinity maturation. Using bone marrow chimeras, we show that these activities are primarily a result of CD3-expressing cells producing IL-21 that acts directly on B cells. Molecularly, IL-21 maintains expression of Bcl-6 in GC B cells. The absence of IL-21 or IL-21 receptor does not abrogate the appearance of T cells in GCs or the appearance of CD4 T cells with a follicular helper phenotype. IL-21 thus controls fate choices of GC B cells directly.
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119
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Kallies A, Xin A, Belz GT, Nutt SL. Blimp-1 transcription factor is required for the differentiation of effector CD8(+) T cells and memory responses. Immunity 2009; 31:283-95. [PMID: 19664942 DOI: 10.1016/j.immuni.2009.06.021] [Citation(s) in RCA: 382] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 05/08/2009] [Accepted: 06/09/2009] [Indexed: 10/20/2022]
Abstract
In response to viral infection, naive CD8(+) T cells proliferate and differentiate into cytotoxic and cytokine-producing effector cells. Here we showed that the transcription factor Blimp-1, a crucial regulator of plasma cell differentiation, was required for CD8(+) T cells to differentiate into functional killer T cells in response to influenza virus. Blimp-1 was not essential for the generation of memory T cells but was crucial for their efficient recall response upon reinfection. Antigen-specific Blimp-1-deficient CD8(+) T cells failed to appropriately regulate the transcriptional program essential for killer T cell responses and showed impaired migration to the site of infection. This study identifies Blimp-1 as a master regulator of the terminal differentiation of CD8(+) effector T cells and uncovers a conservation of the pathways that regulate the terminal differentiation of T and B cells.
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120
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Kallies A. Distinct regulation of effector and memory T‐cell differentiation. Immunol Cell Biol 2008; 86:325-32. [DOI: 10.1038/icb.2008.16] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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121
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Robertson EJ, Charatsi I, Joyner CJ, Koonce CH, Morgan M, Islam A, Paterson C, Lejsek E, Arnold SJ, Kallies A, Nutt SL, Bikoff EK. Blimp1 regulates development of the posterior forelimb, caudal pharyngeal arches, heart and sensory vibrissae in mice. Development 2008; 134:4335-45. [PMID: 18039967 DOI: 10.1242/dev.012047] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The zinc-finger transcriptional repressor Blimp1 (Prdm1) controls gene expression patterns during differentiation of B lymphocytes and regulates epigenetic changes required for specification of primordial germ cells. Blimp1 is dynamically expressed at diverse tissue sites in the developing mouse embryo, but its functional role remains unknown because Blimp1 mutant embryos arrest at E10.5 due to placental insufficiency. To explore Blimp1 activities at later stages in the embryo proper, here we used a conditional inactivation strategy. A Blimp1-Cre transgenic strain was also exploited to generate a fate map of Blimp1-expressing cells. Blimp1 plays essential roles in multipotent progenitor cell populations in the posterior forelimb, caudal pharyngeal arches, secondary heart field and sensory vibrissae and maintains key signalling centres at these diverse tissues sites. Interestingly, embryos carrying a hypomorphic Blimp1gfp reporter allele survive to late gestation and exhibit similar, but less severe developmental abnormalities, whereas transheterozygous Blimp1(gfp/-) embryos with further reduced expression levels, display exacerbated defects. Collectively, the present experiments demonstrate that Blimp1 requirements in diverse cell types are exquisitely dose dependent.
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Akira S, Anguita J, Anstead GM, Aranow C, Austin HA, Babu S, Baker JR, Baliga CS, Ballow M, Balow JE, Bardana EJ, Becker MD, Belmont JW, Ben-Yehuda D, Berek C, Bieber T, Bijlsma JW, Bleesing JJ, Blutt SE, Borzova E, Boyaka PN, Brockow K, Budd RC, Buttgereit F, Calder VL, Candotti F, Carotta S, Casanova JL, Cascalho M, Chan ES, Chinen J, Cho ME, Christopher-Stine L, Collins HL, Cope AP, Cortese I, Cronstein BN, Custovic A, Dalakas MC, Devlin BH, Diamond B, Dispenzieri A, Drenth JP, Du Clos TW, Dykewicz MS, Eagar TN, Eisenbarth GS, Elson CO, Erkan D, Feinberg M, Fikrig E, Fischer A, Fleisher TA, Fontenot AP, Fortner KA, Frew AJ, Friedman TM, Fujihashi K, Galli SJ, Gatt ME, Gershwin ME, Goronzy JJ, Grattan CE, Greenspan NS, Grubeck-Loebenstein B, Haeberli G, Hall RP, Hamilton RG, Harriman GR, Hassan KM, Helbling A, Hellmann DB, Hernandez-Trujillo V, Hingorani M, Holland SM, Homburger HA, Horne M, Illei G, Imboden J, Ishii KJ, Izraeli S, Jaffe ES, Jalkanen S, June CH, Kahan BD, Kallies A, Kaufmann SH, Kavanaugh AF, Koretzky G, Korngold R, Kovaiou RD, Kuhns DB, Kurlander R, Kyle RA, Lane HC, Laurence A, Le Deist F, Lee SJ, Lemery SJ, Lenardo MJ, Levinson AI, Lewis DB, Lewis DE, Lieberman J, Lieberman P, Lightman SL, Lockshin MD, Lotze MT, Mackay M, Maltzman JS, Manns MP, Mapara MY, Marinho S, Markert ML, Martini A, Masters SL, Mazzolari E, McFarland HF, McGhee JR, McKenna F, Melby PC, Metcalfe DD, Metz M, Mican JM, Miller SD, Mold C, Moller DR, Montanaro A, Mueller SN, Müller UR, Murphy PM, Noel P, Notarangelo LD, Nutman TB, Nutt SL, Bosco de Oliveira J, Oliver SN, Olson CM, O'shea J, Paul ME, Peterson EJ, Picard C, Pichler WJ, Pillemer SR, Pittaluga S, Platt JL, Plotz PH, Radbruch A, Ravelli A, Reveille JD, Rich RR, Rick ME, Risma KA, Rodgers JR, Rosen A, Rosenbaum JT, Rothenberg ME, Rouse BT, Rowley S, Rudelius M, Sakaguchi S, Salmi M, Schaible UE, Schroeder HW, Schwarz MI, Seibel MJ, Selmi C, Shafer WM, Shah PK, Shahbaz-Samavi M, Shaw AR, Shearer WT, Sicherer SH, Siegel R, Jit Singh R, Smith JR, Smith PD, Sneller MC, Steinke JW, Stephens DS, Stone JH, Su HC, Tato CM, Torres RM, Uzel G, van der Hilst JC, van der Meer JW, Varga J, Villadangos JA, Wang SH, Weinberger B, Weller PF, Weyand CM, Wigley FM, Winchester RJ, Wing K, Young LJ, Zuo L. Contributors. Clin Immunol 2008. [DOI: 10.1016/b978-0-323-04404-2.10102-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nutt SL, Carotta S, Kallies A. Cytotoxic lymphocyte function and natural killer cells. Clin Immunol 2008. [DOI: 10.1016/b978-0-323-04404-2.10018-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nutt SL, Fairfax KA, Kallies A. BLIMP1 guides the fate of effector B and T cells. Nat Rev Immunol 2007; 7:923-7. [PMID: 17965637 DOI: 10.1038/nri2204] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
B-lymphocyte-induced maturation protein 1 (BLIMP1) is a transcriptional repressor, and its importance in controlling the terminal differentiation of antibody-secreting cells (ASCs) is well established. However, as we discuss in this Progress article, it has now become evident that the ASC programme consists of a discrete BLIMP1-independent initiation phase, followed by a second step in which BLIMP1 is absolutely required for the differentiation of fully mature ASCs. In addition, an important role for BLIMP1 in maintaining the homeostasis of effector T cells is emerging, suggesting intriguing parallels between the control of effector-cell fates in both B and T cells.
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Nutt SL, Kallies A, Belz GT. Blimp-1 connects the intrinsic and extrinsic regulation of T cell homeostasis. J Clin Immunol 2007; 28:97-106. [PMID: 18071884 DOI: 10.1007/s10875-007-9151-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2007] [Accepted: 09/20/2007] [Indexed: 01/13/2023]
Abstract
The body tends to maintain a relatively constant number of peripheral T cells, a phenomenon termed T cell homeostasis. Homeostasis is controlled by the coordinated activity of extrinsic regulation, most notably through cytokines of the common gamma chain (cgammaC) family and intrinsic regulation by transcription factors. Whereas the former mechanism has been extensively studied and is relatively well characterized, the transcription factors that govern the homeostasis of late-stage effector and memory T cells have been less well defined but include regulators such as T-bet, Eomes, Bcl6, and Id2. The transcriptional repressor, Blimp-1 is well known as a master regulator of the terminal differentiation of B cells into antibody secreting plasma cells. Recent experiments have now revealed that Blimp-1 is also a key regulator of T cell differentiation. Blimp-1 is expressed in differentiated effector T cells and controls their homeostasis. Interestingly, Blimp-1 expression is controlled by the same cgammaC cytokines that regulate T cell homeostasis suggesting a direct link between the extrinsic and intrinsic arms of the process.
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