Abstract
Follicular helper T cells have recently emerged as a separate CD4+ T helper lineage specialised in provision of help to B cells. They develop independently from Th1, Th2 and Th17 cells and are critical for humoral immunity, including the generation of long-lived and high affinity plasma cells and memory cells crucial for long-term protection against infections. A stepwise differentiation programme has emerged in which T cell receptor (TCR) signalling strength, CD28-mediated costimulation, B cell-derived inducible costimulator ligand signals, induction of c-maf and actions of cytokines, including interleukin (IL)-6 and IL-21, lead to upregulation of the transcriptional repressor B cell lymphoma 6 (Bcl-6) that drives T follicular helper (Tfh) cell differentiation. Bcl-6 turns on a repression programme that targets Blimp-1, transcriptional regulators of other helper lineages and microRNAs. Their concerted actions modulate expression of chemokine receptors, surface molecules and cytokines critical for follicular homing and B cell helper functions. Here, we review the nature of Tfh cells providing help to B cells during the two phases of B cell activation that occur in the outer T zone and, for some B cells, in germinal centres (GC). Recent insights into the signalling events that drive terminal differentiation of Tfh cells critical for selecting somatically mutated GC B cells and the consequences of Tfh dysregulation for immunodeficiency and autoimmune pathology are discussed.
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References
Hsu SM, Cossman J, Jaffe ES (1983) Lymphocyte subsets in normal human lymphoid tissues. Am J Clin Pathol 80(1):21–30
Velardi A et al (1986) Functional analysis of cloned germinal center CD4+ cells with natural killer cell-related features. Divergence from typical T helper cells. J Immunol 137(9):2808–2813
Liu YJ et al (1989) Mechanism of antigen-driven selection in germinal centres. Nature 342(6252):929–931
Klaus SJ et al (1994) Costimulation through CD28 enhances T cell-dependent B cell activation via CD40–CD40L interaction. J Immunol 152(12):5643–5652
Casamayor-Palleja M, Khan M, MacLennan IC (1995) A subset of CD4+ memory T cells contains preformed CD40 ligand that is rapidly but transiently expressed on their surface after activation through the T cell receptor complex. J Exp Med 181(4):1293–1301
Casamayor-Palleja M et al (1996) Centrocytes rapidly adopt a memory B cell phenotype on co-culture with autologous germinal centre T cell-enriched preparations. Int Immunol 8(5):737–744
Han S et al (1995) Cellular interaction in germinal centers. Roles of CD40 ligand and B7-2 in established germinal centers. J Immunol 155(2):556–567
Rothstein TL et al (1995) Protection against Fas-dependent Th1-mediated apoptosis by antigen receptor engagement in B cells. Nature 374(6518):163–165
Forster R et al (1996) A putative chemokine receptor, BLR1, directs B cell migration to defined lymphoid organs and specific anatomic compartments of the spleen. Cell 87(6):1037–1047
Walker LS et al (1999) Compromised OX40 function in CD28-deficient mice is linked with failure to develop CXC chemokine receptor 5-positive CD4 cells and germinal centers. J Exp Med 190(8):1115–1122
Ansel KM et al (1999) In vivo-activated CD4 T cells upregulate CXC chemokine receptor 5 and reprogram their response to lymphoid chemokines. J Exp Med 190(8):1123–1134
Kim CH et al (2001) Subspecialization of CXCR5+ T cells: B helper activity is focused in a germinal center-localized subset of CXCR5+ T cells. J Exp Med 193(12):1373–1381
Schaerli P et al (2000) CXC chemokine receptor 5 expression defines follicular homing T cells with B cell helper function. J Exp Med 192(11):1553–1562
Breitfeld D et al (2000) Follicular B helper T cells express CXC chemokine receptor 5, localize to B cell follicles, and support immunoglobulin production. J Exp Med 192(11):1545–1552
Kim CH et al (2004) Unique gene expression program of human germinal center T helper cells. Blood 104(7):1952–1960
Chtanova T et al (2004) T follicular helper cells express a distinctive transcriptional profile, reflecting their role as non-Th1/Th2 effector cells that provide help for B cells. J Immunol 173(1):68–78
Nurieva RI et al (2008) Generation of T follicular helper cells is mediated by interleukin-21 but independent of T helper 1, 2, or 17 cell lineages. Immunity 29(1):138–149
Vinuesa CG et al (2005) Follicular B helper T cells in antibody responses and autoimmunity. Nat Rev Immunol 5(11):853–865
Nurieva RI et al (2009) Bcl6 mediates the development of T follicular helper cells. Science 325:1001–1005
Yu D et al (2009) The transcriptional repressor Bcl-6 directs T follicular helper cell lineage commitment. Immunity 31:457–468
Johnston RJ et al (2009) Bcl6 and Blimp-1 are reciprocal and antagonistic regulators of T follicular helper cell differentiation. Science 325:1006–1010
Toellner KM et al (1998) T helper 1 (Th1) and Th2 characteristics start to develop during T cell priming and are associated with an immediate ability to induce immunoglobulin class switching. J Exp Med 187(8):1193–1204
Fazilleau N et al (2009) Follicular helper T cells: lineage and location. Immunity 30(3):324–335
McHeyzer-Williams LJ et al (2009) Follicular helper T cells as cognate regulators of B cell immunity. Curr Opin Immunol 21(3):266–273
Okada T et al (2005) Antigen-engaged B cells undergo chemotaxis toward the T zone and form motile conjugates with helper T cells. PLoS Biol 3(6):e150
Chan TD et al (2009) Antigen affinity controls rapid T-dependent antibody production by driving the expansion rather than the differentiation or extrafollicular migration of early plasmablasts. J Immunol 183(5):3139–3149
Odegard JM et al (2008) ICOS-dependent extrafollicular helper T cells elicit IgG production via IL-21 in systemic autoimmunity. J Exp Med 205(12):2873–2886
Bubier JA et al (2009) A critical role for IL-21 receptor signaling in the pathogenesis of systemic lupus erythematosus in BXSB-Yaa mice. Proc Natl Acad Sci USA 106(5):1518–1523
Linterman MA et al (2009) Roquin differentiates the specialized functions of duplicated T cell costimulatory receptor genes CD28 and ICOS. Immunity 30(2):228–241
Haynes NM et al (2007) Role of CXCR5 and CCR7 in follicular Th cell positioning and appearance of a programmed cell death gene-1high germinal center-associated subpopulation. J Immunol 179(8):5099–5108
Fazilleau N et al (2009) The function of follicular helper T cells is regulated by the strength of T cell antigen receptor binding. Nat Immunol 10(4):375–384
Linterman MA et al (2009) Follicular helper T cells are required for systemic autoimmunity. J Exp Med 206(3):561–576
Crotty S et al (2003) SAP is required for generating long-term humoral immunity. Nature 421(6920):282–287
Cannons JL et al (2006) SAP regulates T cell-mediated help for humoral immunity by a mechanism distinct from cytokine regulation. J Exp Med 203(6):1551–1565
Veillette A (2006) Immune regulation by SLAM family receptors and SAP-related adaptors. Nat Rev Immunol 6(1):56–66
Li C, Schibli D, Li SS (2009) The XLP syndrome protein SAP interacts with SH3 proteins to regulate T cell signaling and proliferation. Cell Signal 21(1):111–119
Kearney ER et al (1994) Visualization of peptide-specific T cell immunity and peripheral tolerance induction in vivo. Immunity 1(4):327–339
Malherbe L et al (2008) Vaccine adjuvants alter TCR-based selection thresholds. Immunity 28(5):698–709
Walker LS et al (2003) Established T cell-driven germinal center B cell proliferation is independent of CD28 signaling but is tightly regulated through CTLA-4. J Immunol 170(1):91–98
Boise LH et al (1995) CD28 costimulation can promote T cell survival by enhancing the expression of Bcl-XL. Immunity 3(1):87–98
Noel PJ et al (1996) CD28 costimulation prevents cell death during primary T cell activation. J Immunol 157(2):636–642
Vinuesa CG et al (2005) A RING-type ubiquitin ligase family member required to repress follicular helper T cells and autoimmunity. Nature 435(7041):452–458
Yu D et al (2007) Roquin represses autoimmunity by limiting inducible T-cell co-stimulator messenger RNA. Nature 450(7167):299–303
Greenwald RJ, Freeman GJ, Sharpe AH (2005) The B7 family revisited. Annu Rev Immunol 23:515–548
Luther SA et al (2002) Differing activities of homeostatic chemokines CCL19, CCL21, and CXCL12 in lymphocyte and dendritic cell recruitment and lymphoid neogenesis. J Immunol 169(1):424–433
Muller G, Hopken UE, Lipp M (2003) The impact of CCR7 and CXCR5 on lymphoid organ development and systemic immunity. Immunol Rev 195:117–135
Miller MJ et al (2002) Two-photon imaging of lymphocyte motility and antigen response in intact lymph node. Science 296(5574):1869–1873
Okada T et al (2002) Chemokine requirements for B cell entry to lymph nodes and Peyer’s patches. J Exp Med 196(1):65–75
Reif K et al (2002) Balanced responsiveness to chemoattractants from adjacent zones determines B-cell position. Nature 416(6876):94–99
Ekland EH et al (2004) Requirements for follicular exclusion and competitive elimination of autoantigen-binding B cells. J Immunol 172(8):4700–4708
Hardtke S, Ohl L, Forster R (2005) Balanced expression of CXCR5 and CCR7 on follicular T helper cells determines their transient positioning to lymph node follicles and is essential for efficient B-cell help. Blood 106(6):1924–1931
Qi H et al (2008) SAP-controlled T–B cell interactions underlie germinal centre formation. Nature 455(7214):764–769
McAdam AJ et al (2000) Mouse inducible costimulatory molecule (ICOS) expression is enhanced by CD28 costimulation and regulates differentiation of CD4+ T cells. J Immunol 165(9):5035–5040
Dong C et al (2001) ICOS co-stimulatory receptor is essential for T-cell activation and function. Nature 409(6816):97–101
Grimbacher B et al (2003) Homozygous loss of ICOS is associated with adult-onset common variable immunodeficiency. Nat Immunol 4(3):261–268
McAdam AJ et al (2001) ICOS is critical for CD40-mediated antibody class switching. Nature 409(6816):102–105
Tafuri A et al (2001) ICOS is essential for effective T-helper-cell responses. Nature 409(6816):105–109
Akiba H et al (2005) The role of ICOS in the CXCR5+ follicular B helper T cell maintenance in vivo. J Immunol 175(4):2340–2348
Nakazawa A et al (2004) The expression and function of costimulatory molecules B7H and B7-H1 on colonic epithelial cells. Gastroenterology 126(5):1347–1357
Mages HW et al (2000) Molecular cloning and characterization of murine ICOS and identification of B7h as ICOS ligand. Eur J Immunol 30(4):1040–1047
Liang L, Porter EM, Sha WC (2002) Constitutive expression of the B7h ligand for inducible costimulator on naive B cells is extinguished after activation by distinct B cell receptor and interleukin 4 receptor-mediated pathways and can be rescued by CD40 signaling. J Exp Med 196(1):97–108
Nurieva RI et al (2003) B7h is required for T cell activation, differentiation, and effector function. Proc Natl Acad Sci USA 100(24):14163–14168
Swallow MM, Wallin JJ, Sha WC (1999) B7h, a novel costimulatory homolog of B7.1 and B7.2, is induced by TNFalpha. Immunity 11(4):423–432
Nurieva RI et al (2003) Transcriptional regulation of th2 differentiation by inducible costimulator. Immunity 18(6):801–811
Bauquet AT et al (2009) The costimulatory molecule ICOS regulates the expression of c-Maf and IL-21 in the development of follicular T helper cells and TH-17 cells. Nat Immunol 10(2):167–175
Pot C et al (2009) Cutting edge: IL-27 induces the transcription factor c-Maf, cytokine IL-21, and the costimulatory receptor ICOS that coordinately act together to promote differentiation of IL-10-producing Tr1 cells. J Immunol 183(2):797–801
Vogelzang A et al (2008) A fundamental role for interleukin-21 in the generation of T follicular helper cells. Immunity 29(1):127–137
Kerckaert JP et al (1993) LAZ3, a novel zinc-finger encoding gene, is disrupted by recurring chromosome 3q27 translocations in human lymphomas. Nat Genet 5(1):66–70
Ye BH et al (1993) Alterations of a zinc finger-encoding gene, BCL-6, in diffuse large-cell lymphoma. Science 262(5134):747–750
Seyfert VL et al (1996) Transcriptional repression by the proto-oncogene BCL-6. Oncogene 12(11):2331–2342
Deweindt C et al (1995) The LAZ3/BCL6 oncogene encodes a sequence-specific transcriptional inhibitor: a novel function for the BTB/POZ domain as an autonomous repressing domain. Cell Growth Differ 6(12):1495–1503
Chang CC et al (1996) BCL-6, a POZ/zinc-finger protein, is a sequence-specific transcriptional repressor. Proc Natl Acad Sci USA 93(14):6947–6952
Cattoretti G et al (1995) BCL-6 protein is expressed in germinal-center B cells. Blood 86(1):45–53
Allman D et al (1996) BCL-6 expression during B-cell activation. Blood 87(12):5257–5268
Dent AL et al (1997) Control of inflammation, cytokine expression, and germinal center formation by BCL-6. Science 276(5312):589–592
Ye BH et al (1997) The BCL-6 proto-oncogene controls germinal-centre formation and Th2-type inflammation. Nat Genet 16(2):161–170
Fukuda T et al (1997) Disruption of the Bcl6 gene results in an impaired germinal center formation. J Exp Med 186(3):439–448
Toney LM et al (2000) BCL-6 regulates chemokine gene transcription in macrophages. Nat Immunol 1(3):214–220
Ichii H et al (2002) Role for Bcl-6 in the generation and maintenance of memory CD8+ T cells. Nat Immunol 3(6):558–563
Ichii H et al (2007) Bcl6 is essential for the generation of long-term memory CD4+ T cells. Int Immunol 19(4):427–433
King C, Tangye SG, Mackay CR (2008) T follicular helper (TFH) cells in normal and dysregulated immune responses. Annu Rev Immunol 26:741–766
Shaffer AL et al (2000) BCL-6 represses genes that function in lymphocyte differentiation, inflammation, and cell cycle control. Immunity 13(2):199–212
Shaffer AL et al (2002) Blimp-1 orchestrates plasma cell differentiation by extinguishing the mature B cell gene expression program. Immunity 17(1):51–62
Reljic R et al (2000) Suppression of signal transducer and activator of transcription 3-dependent B lymphocyte terminal differentiation by BCL-6. J Exp Med 192(12):1841–1848
Kusam S et al (2003) Inhibition of Th2 differentiation and GATA-3 expression by BCL-6. J Immunol 170(5):2435–2441
Ma CS et al (2009) Early commitment of naive human CD4(+) T cells to the T follicular helper (T(FH)) cell lineage is induced by IL-12. Immunol Cell Biol 87:590–600
Reinhardt RL, Liang HE, Locksley RM (2009) Cytokine-secreting follicular T cells shape the antibody repertoire. Nat Immunol 10(4):385–393
Lu R (2008) Interferon regulatory factor 4 and 8 in B-cell development. Trends Immunol 29(10):487–492
Flynn S et al (1998) CD4 T cell cytokine differentiation: the B cell activation molecule, OX40 ligand, instructs CD4 T cells to express interleukin 4 and upregulates expression of the chemokine receptor, Blr-1. J Exp Med 188(2):297–304
Brocker T et al (1999) CD4 T cell traffic control: in vivo evidence that ligation of OX40 on CD4 T cells by OX40-ligand expressed on dendritic cells leads to the accumulation of CD4 T cells in B follicles. Eur J Immunol 29(5):1610–1616
Kim MY et al (2003) CD4(+)CD3(−) accessory cells costimulate primed CD4 T cells through OX40 and CD30 at sites where T cells collaborate with B cells. Immunity 18(5):643–654
Chen AI et al (1999) Ox40-ligand has a critical costimulatory role in dendritic cell:T cell interactions. Immunity 11(6):689–698
Kopf M et al (1999) OX40-deficient mice are defective in Th cell proliferation but are competent in generating B cell and CTL responses after virus infection. Immunity 11(6):699–708
Gaspal FM et al (2005) Mice deficient in OX40 and CD30 signals lack memory antibody responses because of deficient CD4 T cell memory. J Immunol 174(7):3891–3896
Lane PJ, Gaspal FM, Kim MY (2005) Two sides of a cellular coin: CD4(+)CD3− cells regulate memory responses and lymph-node organization. Nat Rev Immunol 5(8):655–660
Mebius RE, Rennert P, Weissman IL (1997) Developing lymph nodes collect CD4+CD3− LTbeta+ cells that can differentiate to APC, NK cells, and follicular cells but not T or B cells. Immunity 7(4):493–504
Vinuesa CG, Sanz I, Cook MC (2009) Dysregulation of germinal centres in autoimmune disease. Nat Rev Immunol 9:845–857
Kelsoe G (1996) Life and death in germinal centers (redux). Immunity 4(2):107–111
Meyer-Hermann ME, Maini PK, Iber D (2006) An analysis of B cell selection mechanisms in germinal centers. Math Med Biol 23(3):255–277
Hauser AE et al (2007) Definition of germinal-center B cell migration in vivo reveals predominant intrazonal circulation patterns. Immunity 26(5):655–667
Allen CD et al (2007) Imaging of germinal center selection events during affinity maturation. Science 315(5811):528–531
Schwickert TA et al (2007) In vivo imaging of germinal centres reveals a dynamic open structure. Nature 446(7131):83–87
Batista FD, Neuberger MS (1998) Affinity dependence of the B cell response to antigen: a threshold, a ceiling, and the importance of off-rate. Immunity 8(6):751–759
King IL, Mohrs M (2009) IL-4-producing CD4+ T cells in reactive lymph nodes during helminth infection are T follicular helper cells. J Exp Med 206(5):1001–1007
Zaretsky AG et al (2009) T follicular helper cells differentiate from Th2 cells in response to helminth antigens. J Exp Med 206(5):991–999
Ozaki K et al (2002) A critical role for IL-21 in regulating immunoglobulin production. Science 298(5598):1630–1634
Ozaki K et al (2004) Regulation of B cell differentiation and plasma cell generation by IL-21, a novel inducer of Blimp-1 and Bcl-6. J Immunol 173(9):5361–5371
Linterman ML et al (2010) IL-21 acts directly on B cells to regulate Bcl-6 expression and germinal center responses. J Exp Med (In press)
Cunningham AF et al (2004) Pinpointing IL-4-independent acquisition and IL-4-influenced maintenance of Th2 activity by CD4 T cells. Eur J Immunol 34(3):686–694
Pape KA et al (2003) Visualization of the genesis and fate of isotype-switched B cells during a primary immune response. J Exp Med 197(12):1677–1687
Takahashi Y, Ohta H, Takemori T (2001) Fas is required for clonal selection in germinal centers and the subsequent establishment of the memory B cell repertoire. Immunity 14(2):181–192
Hao Z et al (2008) Fas receptor expression in germinal-center B cells is essential for T and B lymphocyte homeostasis. Immunity 29(4):615–627
William J et al (2002) Evolution of autoantibody responses via somatic hypermutation outside of germinal centers. Science 297(5589):2066–2070
Radic MZ, Weigert M (1994) Genetic and structural evidence for antigen selection of anti-DNA antibodies. Annu Rev Immunol 12:487–520
Ray SK, Putterman C, Diamond B (1996) Pathogenic autoantibodies are routinely generated during the response to foreign antigen: a paradigm for autoimmune disease. Proc Natl Acad Sci USA 93(5):2019–2024
Rosen A, Casciola-Rosen L (2001) Clearing the way to mechanisms of autoimmunity. Nat Med 7(6):664–665
Shiono H et al (2003) Scenarios for autoimmunization of T and B cells in myasthenia gravis. Ann N Y Acad Sci 998:237–256
Weyand CM, Kurtin PJ, Goronzy JJ (2001) Ectopic lymphoid organogenesis: a fast track for autoimmunity. Am J Pathol 159(3):787–793
Vinuesa CG, Sanz I, Cook MC (2009) Dysregulation of germinal centres in autoimmune disease. Nat Rev Immunol 9(12):845–857
Luzina IG et al (2001) Spontaneous formation of germinal centers in autoimmune mice. J Leukoc Biol 70(4):578–584
Sims GP et al (2001) Somatic hypermutation and selection of B cells in thymic germinal centers responding to acetylcholine receptor in myasthenia gravis. J Immunol 167(4):1935–1944
Salomonsson S et al (2003) Cellular basis of ectopic germinal center formation and autoantibody production in the target organ of patients with Sjogren’s syndrome. Arthritis Rheum 48(11):3187–3201
Armengol MP et al (2001) Thyroid autoimmune disease: demonstration of thyroid antigen-specific B cells and recombination-activating gene expression in chemokine-containing active intrathyroidal germinal centers. Am J Pathol 159(3):861–873
Cappione A 3rd et al (2005) Germinal center exclusion of autoreactive B cells is defective in human systemic lupus erythematosus. J Clin Invest 115(11):3205–3216
Subramanian S et al (2006) A Tlr7 translocation accelerates systemic autoimmunity in murine lupus. Proc Natl Acad Sci USA 103(26):9970–9975
Murata K et al (2002) Constitutive OX40/OX40 ligand interaction induces autoimmune-like diseases. J Immunol 169(8):4628–4636
Schwartzberg PL et al (2009) SLAM receptors and SAP influence lymphocyte interactions, development and function. Nat Rev Immunol 9(1):39–46
Simpson N et al (2009) Expansion of circulating T cells resembling TFH cells is a fixed phenotype that identifies a subset of severe systemic lupus erythematosus. Arthritis Rheum 62:234–244
Hsu HC et al (2007) Overexpression of activation-induced cytidine deaminase in B cells is associated with production of highly pathogenic autoantibodies. J Immunol 178(8):5357–5365
Hsu HC et al (2006) Production of a novel class of polyreactive pathogenic autoantibodies in BXD2 mice causes glomerulonephritis and arthritis. Arthritis Rheum 54(1):343–355
Hsu HC et al (2008) Interleukin 17-producing T helper cells and interleukin 17 orchestrate autoreactive germinal center development in autoimmune BXD2 mice. Nat Immunol 9(2):166–175
Wu HY, Quintana FJ, Weiner HL (2008) Nasal anti-CD3 antibody ameliorates lupus by inducing an IL-10-secreting CD4+ CD25− LAP+ regulatory T cell and is associated with down-regulation of IL-17+ CD4+ ICOS+CXCR5+ follicular helper T cells. J Immunol 181(9):6038–6050
Lim HW, Hillsamer P, Kim CH (2004) Regulatory T cells can migrate to follicles upon T cell activation and suppress GC-Th cells and GC-Th cell-driven B cell responses. J Clin Invest 114(11):1640–1649
Bossaller L et al (2006) ICOS deficiency is associated with a severe reduction of CXCR5+CD4 germinal center Th cells. J Immunol 177(7):4927–4932
Warnatz K et al (2006) Human ICOS deficiency abrogates the germinal center reaction and provides a monogenic model for common variable immunodeficiency. Blood 107(8):3045–3052
Nichols KE et al (2005) Molecular and cellular pathogenesis of X-linked lymphoproliferative disease. Immunol Rev 203:180–199
Ma CS et al (2005) Impaired humoral immunity in X-linked lymphoproliferative disease is associated with defective IL-10 production by CD4+ T cells. J Clin Invest 115(4):1049–1059
DiSanto JP et al (1993) CD40 ligand mutations in X-linked immunodeficiency with hyper-IgM. Nature 361(6412):541–543
Korthauer U et al (1993) Defective expression of T-cell CD40 ligand causes X-linked immunodeficiency with hyper-IgM. Nature 361(6412):539–541
Allen RC et al (1993) CD40 ligand gene defects responsible for X-linked hyper-IgM syndrome. Science 259(5097):990–993
Aruffo A et al (1993) The CD40 ligand, gp39, is defective in activated T cells from patients with X-linked hyper-IgM syndrome. Cell 72(2):291–300
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CGV is supported by a Viertel Senior Medical research fellowship and an NHMRC program and project grants.
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Linterman, M.A., Vinuesa, C.G. Signals that influence T follicular helper cell differentiation and function. Semin Immunopathol 32, 183–196 (2010). https://doi.org/10.1007/s00281-009-0194-z
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DOI: https://doi.org/10.1007/s00281-009-0194-z