Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Type I interferons promote germinal centers through B cell intrinsic signaling and dendritic cell dependent Th1 and Tfh cell lineages

ABSTRACT: Type I interferons (IFNs) play an essential role in antiviral immunity, correlate with severity of systemic autoimmune disease, and are likely to represent a key component of mRNA vaccine-adjuvanticity. Relevant to all, type I IFNs can enhance germinal center (GC) B cell responses but underlying signaling pathways are incompletely understood due to pleiotropic effects in multiple cell types. Here, we demonstrate that a succinct type I IFN response promotes GC formation and associated IgG subclass distribution primarily through signaling in cDCs and B cells. Type I IFN signaling in cDCs, distinct from cDC1, stimulates development of separable Tfh and Th1 cell subsets. However, Th cell-derived IFN-g induces T-bet expression and IgG2c isotype switching prior to this bifurcation and has no evident effects once GCs and bona fide Tfh cells developed. This pathway acts in synergy with early B cell-intrinsic type I IFN signaling, which reinforces T-bet expression in B cells and leads to a selective amplification of the IgG2c+ GC B cell response. Despite the strong Th1 polarizing effect of type I IFNs, the Tfh cell subset develops into IL-4 producing cells that control the overall magnitude of the GCs and promote generation of IgG1+ GC B cells. Thus, type I IFNs act on B cells and cDCs to drive GC formation and to coordinate IgG subclass distribution through parallel Th1 and Tfh cell-dependent pathways.

ORGANISM(S): Mus musculus

PROVIDER: GSE201551 | GEO | 2022/07/08

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Type I Interferon induces binding of STAT1 to Bcl6: Divergent Roles of STAT-family transcription factors in the T follicular helper cell genetic program

Project description:CD4+ T follicular helper cells (TFH) are critical for the formation and function of B cell responses to infection or immunization, but also play an important role in autoimmunity. The factors that contribute to the differentiation of this helper cell subset are incompletely understood, although several cytokines including IL-6, IL-21 and IL-12 can promote TFH cell formation. Yet, none of these factors, nor their downstream cognate STATs, have emerged as non-redundant, essential drivers of TFH cells. This suggests a model in which multiple factors can contribute to the phenotypic characteristics of TFH cells. As type I interferons (IFNs) are often generated in immune responses, we set out to investigate if these factors are relevant to TFH cell differentiation. Type I IFNs promote Th1 responses, thus one possibility was these factors antagonized TFH-expressed genes. However, we show that type I IFNs (IFN-α/β) induced Bcl6 expression, the master regulator transcription factor for TFH cells, and CXCR5 and PD-1 (encoded by Pdcd1), key surface molecules expressed by TFH cells. In contrast, type I IFNs failed to induce IL-21, the signature cytokine for TFH cells. The induction of Bcl6 was regulated directly by STAT1, which bound to the Bcl6, Cxcr5 and Pdcd1 loci. These data suggest that type I IFNs (IFN-α/β) and STAT1 can contribute to some features of TFH cells but are inadequate in inducing complete programming of this subset. The role of STAT1 in type I interferon treated CD4+ T cells was investigated by Chip-seq of STAT1.

2014-01-22 | E-GEOD-51531 | biostudies-arrayexpress

Assembly of a spatial circuit of T-bet-expressing lymphocytes is required for antiviral humoral immunity

Project description:Effective antiviral immunity requires generation of T and B lymphocytes expressing transcription factor T-bet, a regulator of type 1 inflammatory responses. Using T-bet expression as an endogenous marker for cells participating in a type 1 response, we report coordinated interactions of T-bet-expressing T and B lymphocytes based on their dynamic co-localization at T cell zone and B follicle boundary (T-B boundary) and germinal centers (GC) within the draining lymph node during lung influenza infection. We demonstrate that the assembly of this circuit takes place in distinct anatomical niches, guided by CXCR3, which enables positioning of TH1 cells at the T-B boundary. The encounter of B and TH1 cells at T-B boundary enables IFN produced by the latter to induce IgG2c class switching. Within GCs, T-bet+ TFH cells represent a specialized stable sub-lineage required for GC growth, but dispensable for IgG2c class switching. Our studies show that during respiratory viral infection, T-bet-expressing T and B lymphocytes form a circuit assembled in a spatio-temporally controlled manner that acts as a functional unit enabling a robust and coherent humoral response tailored for optimal antiviral immunity.

2021-04-30 | GSE173605 | GEO

Type I Interferon induces binding of STAT1 to Bcl6: Divergent Roles of STAT-family transcription factors in the T follicular helper cell genetic program

2014-01-22 | GSE51531 | GEO

STAT4 and T-bet control follicular helper T cells development in viral infections [RNA-seq]

Project description:Follicular helper T (Tfh) cells promote germinal center (GC) B cell survival and proliferation, and guide their differentiation and Ig isotype switching by delivering contact-dependent and soluble factors, including IL-21, IL-4, IL-9, and IFN-g. IL-21 and IFN-g are co-expressed by Tfh cells during acute and chronic infections, but transcriptional regulation of these cytokines in the GC is incompletely understood. We show that the Th1 transcriptional regulators T-bet and STAT4 are co-expressed with Bcl6 in Tfh cells following acute murine lymphocytic choriomeningitis virus infection, albeit with temporal decline in T-bet expression as the GC response evolved. T-bet was important for Tfh cell production of IFN-g, but not IL-21, and for the generation of a robust germinal center reaction. STAT4, phosphorylated in Tfh cells upon infection, was required for their expression of T-bet and Bcl6, and that of IFN-g and IL-21. These data indicate that T-bet is concomitantly expressed with Bcl6 in Tfh cells and is required alongside STAT4 phosphorylation to coordinate Tfh cell IL-21 and IFN-g production, and for promotion of the GC response following acute viral challenge.

2017-11-22 | GSE105806 | GEO

STAT4 and T-bet control follicular helper T cells development in viral infections [ATAC-seq]

2017-11-22 | GSE105807 | GEO

RNA Seq of TFH cells in Th1 vaccine regimen

Project description:Generating durable humoral immunity through vaccination depends upon effective interaction of follicular helper T cells (Tfh) with germinal center (GC) B cells. Th1 polarization of Tfh cells is an important process shaping the success of Tfh-GC B cell interactions by influencing co-stimulatory and cytokine-dependent Tfh help to B cells. However, the question remains whether adjuvant-dependent modulation of Tfh cells enhances HIV-1 vaccine-induced anti-Envelope (Env) antibody responses. We investigated whether an HIV-1 vaccine platform designed to increase the number of Th1-polarized Tfh cells enhances the magnitude and quality of anti-Env antibodies. Utilizing a novel interferon-induced protein (IP)-10-adjuvanted HIV-1 DNA prime, followed by an MPLA+QS-21-adjuvanted Env protein boost in macaques (DIP-10 PALFQ), we observed higher anti-Env serum IgG titers with greater cross-clade reactivity, specificity to V1V2, and effector functions when compared to macaques primed with DNA lacking IP-10 and boosted with MPLA+alum-adjuvanted Env protein (DPALFA) The DIP-10 PALFQ vaccine regimen elicited higher anti-Env IgG1 and lower IgG4 antibodies in serum, showing for the first time that adjuvants can dramatically impact the IgG subclass profile in macaques. The DIP-10 PALFQ regimen also increased vaginal and rectal IgA antibodies to a greater extent. Within lymph nodes, we observed augmented GC B cell responses and promotion of Th1 gene expression profiles in GC Tfh cells. The frequency of GC Tfh cells correlated with both the magnitude and avidity of anti-Env serum IgG. Together, these data suggest that adjuvant-induced stimulation of Th1-Tfh cells is an effective strategy for enhancing the magnitude and quality of anti-Env antibody response.

2019-12-10 | GSE141707 | GEO

ZIKV infection induces robust Th1-like Tfh cell and long-term protective antibody responses in immunocompetent mice

Project description:Induction of long-lived antibody responses during infection or vaccination is often essential for subsequent protection, but the relative contributions of T follicular helper (Tfh) cells and T helper 1 (Th1) cells for induction of antigen specific antibody responses to viruses are unclear. Here, we establish an acute Zika virus (ZIKV) infection model in immunocompetent mice, and show that ZIKV infection elicits robust Th1-like Tfh cell and protective antibody responses. While these Th1-like Tfh cells share phenotypic and transcriptomic profiles with both Tfh and Th1 cells, they also have unique surface markers and gene expression characteristics, and are dependent on T-bet for their development. Th1-like Tfh cells, but not Th1 cells, are essential for class switching of ZIKV-specific IgG2c antibodies and maintenance of long-term neutralizing antibody responses. Our study suggests that specific modulation of the Th1-like Tfh cell response during infection or vaccination may augment the induction of antiviral antibody response to ZIKV and other viruses.

2019-05-01 | GSE121250 | GEO

Functional and epigenetic studies reveal multistep differentiation and plasticity of in vitro and in vivo follicular T helper cells

Project description:Follicular T helper cells (Tfh) provide critical help to B cells for germinal center (GC) formation. Mutations affecting SLAM-associated Protein (SAP) prevent GC formation due to defective T-B cell interactions, yet effects on Tfh cell differentiation remain unclear. We describe the in vitro differentiation of functionally-competent “Tfh-like” cells that expressed Interleukin-21, Tfh markers, and Bcl6, and rescued GC formation in SAP-deficient hosts better than other T helper (Th) cells. SAP-deficient Tfh-like cells appeared virtually indistinguishable from wildtype, yet failed to support GCs in vivo. Interestingly, both Tfh-like and in vivo-derived Tfh cells could produce effector cytokines in response to polarizing conditions. Moreover, Th1, Th2 and Th17 cells could be reprogrammed to obtain Tfh characteristics. ChIP-Seq analyses revealed positive epigenetic markings on Tbx21, Gata3 and Rorc in Tfh-like and ex vivo Tfh cells, and Bcl6 in other Th cell populations, supporting the concept of plasticity between Tfh and other Th cells. Epigenetic modifications were evaluated in ChIP-Seq studies by profiling histone H3K4 and H3K27 trimethylation marks between Th1, Th2, Th17, Tfh-like, and CXCR5+PD-1+ sorted Tfh-like in vitro generated T helper cell populations and ex vivo derived Tfh cells.

2012-01-05 | E-GEOD-32864 | biostudies-arrayexpress

Expression data from WT and Tbx21-/- in vivo TFH cells versus TH1 cells

Project description:Follicular helper T cells (TFH), known as the primary helpers of the germinal center (GC) reaction, promote the humoral immune response to defend against various pathogens. Under conditions of infection by different types of pathogens, many shared transcription factors (TFs), such as Bcl-6, TCF-1 and Maf, are broadly expressed in TFH cells, orchesting TFH cell differentiation and function. In addtion, TFH cells also coexpress environmentally specific TFs as their conventional T cell counterparts (such as T-bet, GATA-3 or ROR-γt, which are expressed in Th1, Th2 or Th17 cells, respectively). This phenomenon indicates the complexity and environmental adaptivity of the TFH cell response. However, the extent to which the TFH cell response relies on these environmentally specific TFs is not completely understood. Here, we found that transcription factor T-bet was specifically expressed in type I but not type II TFH cells and that the T-bet-IFN-γ axis was essential for the maintenance of TFH cells, promoting their proliferation and inhibiting their apoptosis during acute viral infection. Microarray analysis showed both similarities and differences in transcriptome dependency on T-bet in TFH and Th1 cells, suggesting the distinctive role of T-bet in TFH cells. Collectively, our findings reveal an important and specific supporting role for T-bet in type I TFH cell response, which can help us gain a depper understanding of TFH cell subsets.

2019-04-23 | GSE122931 | GEO

The Transcription Factor T-bet Limits Amplification of Type I IFN Transcriptome and Circuitry in T Helper 1 Cells

Project description:Host defense requires the specification of CD4+ helper T (Th) cells into distinct fates including Th1 cells that preferentially produce interferon γ(IFN-γ ).IFN-γ , a member of a large family of anti-pathogenic and anti-tumor IFNs, induces T-bet, a lineage defining transcription factor for Th1 cells, which in turn supports IFN-γ production in a feed-forward manner. Herein, we show a cell intrinsic role of T- bet to influence how T cells perceive their secreted product in the environment. In the absence of T-bet, IFN-γ aberrantly induces a type I IFN transcriptomic program. T-bet preferentially represses genes and pathways ordinarily activated by type I IFNs to ensure that its transcriptional response does not evoke an aberrant amplification of type I IFN signaling circuitry otherwise triggered by its own product.

2017-06-12 | GSE96724 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data