Gene expression of murine B cells activated via TLR4 or TLR4 + CD40: Group1 naïve B cells, Group2 LPS activated B cells 24h, Group3 LPS + anti-CD40 activated B cells 24h, Group4 LPS activated B cells 72h, and Group5 LPS + anti-CD40 activated B cells 72h.
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE35998 | GEO | 2014/02/24
SECONDARY ACCESSION(S): PRJNA151693
REPOSITORIES: GEO
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Project description:Murine B cells can be activated via the surface receptors TLR4 and CD40. For a global assessment of differences in gene expression between these two different modes of B cell activation a genome wide transcriptome analysis was performed. In order to dissect different gene expression profiles of B cells, activation was induced by LPS or LPS + anti-CD40 for 24h and 72h. Both activation states were compared to each other but also to naM-CM-/ve B cells. Gene expression profiles of naM-CM-/ve B cells, B cells activated with LPS and B cells activated with LPS + anti-CD40. Affymetrix MG 430 2.0 whole genome arrays were performed in quadruplicates for naM-CM-/ve B cells, B cells activated via TLR4 for 24 h and 72 h, and B cells activated via TLR4 + CD40 for 24 h and 72 h (20 arrays in total). To obtain genes significantly regulated upon stimulation with LPS, the expression profiles of naM-CM-/ve B cells, B cells activated with LPS for 24 h, and B cells activated with LPS for 72 h were compared to each other. After total RNA extraction, reverse transcription, cDNA extraction, the biotinylated cRNA was transcribed, fragmented, and 15 M-BM-5g cRNA hybridized in quadruplicates for each of the five groups to the 20 GeneChip arrays: Group1 naM-CM-/ve B cells, Group2 LPS activated B cells 24h, Group3 LPS + anti-CD40 activated B cells 24h, Group4 LPS activated B cells 72h, and Group5 LPS + anti-CD40 activated B cells 72h. Access to PDF: http://dx.doi.org/10.1038/nature12979 All chips were imported into BioRetis (http://www.bioretis-analysis.de) and are open to the community now. If you want to obtain one or more lists of HPCDA significant genes you should click on a link of single chips (e.g. GSM879034) to get a description how to manage this.
2014-02-24 | E-GEOD-35998 | biostudies-arrayexpress
Project description:B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization leads to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a microarray analysis of genome-wide gene expression patterns in naïve B-lymphocytes following CD40 signalling over multiple time points. The effect of LPS and LPS+antiCD40 on the transcriptome of IgD+ B cells was analyzed 24 hours after stimulation. The analysis used LPS-treated IgD+B cells as the control for comparison to LPS+anti-CD40-treated cells (test). Indirect comparisons were made across multiple arrays with raw data pulled from different channels for data analysis and comparison to the control data.
2012-12-25 | E-GEOD-29950 | biostudies-arrayexpress
Project description:The effect of LPS and LPS+antiCD40 on the Transcriptome of IgD+ B Cells was analysed here at 72 hours after the stimulation. B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization lead to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a Microarray analyses of genome wide gene expression patterns in naïve B-lymphocytes following CD40 signalling, over multiple time points. Analysis used LPS treated IgD+ B cells as control for comparison to LPS+anti-CD40 treated cells (test).Indirect comparisons were made across multiple arrays with raw data pulled from different channels for data analysis and comparison to the control data.
2012-12-25 | E-GEOD-30412 | biostudies-arrayexpress
Project description:The effect of LPS and LPS+antiCD40 on the Transcriptome of IgD+ B Cells was analysed here at 48 hours after the stimulation B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization leads to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a Microarray analyses of genome wide gene expression patterns in naïve B-lymphocytes following CD40 signalling, over multiple time points. Analysis used LPS treated IgD+B cells as control for comparison to LPS+anti-CD40 treated cells (test).Indirect comparisons were made across multiple arrays with raw data pulled from different channels for data analysis and comparison to the control data.
2012-12-25 | E-GEOD-30170 | biostudies-arrayexpress
Project description:The effect of LPS and LPS+antiCD40 on the Transcriptome of IgD+ B Cells was analysed here at 72 hours after the stimulation. B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization lead to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a Microarray analyses of genome wide gene expression patterns in naïve B-lymphocytes following CD40 signalling, over multiple time points.
2012-12-25 | GSE30412 | GEO
Project description:The effect of LPS and LPS+antiCD40 on the Transcriptome of IgD+ B Cells was analysed here at 48 hours after the stimulation B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization leads to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a Microarray analyses of genome wide gene expression patterns in naïve B-lymphocytes following CD40 signalling, over multiple time points.
2012-12-25 | GSE30170 | GEO
Project description:B-lymphocytes constitute an important aspect of mammalian immune systems by virtue of their ability to produce highly specific antibodies in response to foreign antigens and pathogens. When B-lymphocytes encounter the particular antigen that they are responsive to, they differentiate into two types of cells: short-lived antibody-secreting plasma cells and long-lived memory cells. While the plasma B cells are responsible for the rapid resolution of a current infection or immune challenge, the memory B cells are responsible for mounting a rapid response to subsequent exposures. Previous work had demonstrated that treatment of mice with a single dose of anti-CD40 at the time of immunization leads to improved secondary responses, suggesting an enhancement of the memory B cell pool. We are currently studying the molecular mechanisms underlying the generation of memory B cells, using CD40 signalling as a tool. We have carried out a microarray analysis of genome-wide gene expression patterns in naïve B-lymphocytes following CD40 signalling over multiple time points.
2012-12-25 | GSE29950 | GEO
Project description:Pro-inflammation triggered by microbial lipopolysaccharide (LPS) through Toll-like receptor (TLR) 4 in the presence of interferon (IFN)-g induces cytokine secretion in dendritic cells (DCs) tightly regulated by a defined differentiation program. This DC differentiation is characterized by a dynamic immune activating but also tolerance inducing phenotype associated with irreversible down-modulation of cytokines. CD40L on activated T cells further modifies DC differentiation. Using DNA micro arrays we showed down-regulated mRNA levels of TLR signaling molecules while CD40/CD40L signaling molecules were up-regulated at a time when LPS/IFN-g activated DCs have ceased cytokine expression. Accordingly we demonstrated that CD40/CD40L but not TLR4 or TLR3 signaling mediated by LPS or poly (cytidylic-inosinic) acid (poly I:C) and dsRNA re-established the capacity to secret interleukin (IL)-12 in LPS/IFN-g activated DCs, which have exhausted their potential for cytokine secretion. This resulting TH1 polarizing DC phenotype – which lacked accompanying secretion of the crucial immune suppressive IL-10 - enhanced activation of cytotoxic T lymphocytes (CTLs). We therefore conclude that immune modulation is restricted to a secondary T-cell mediated stimulus at an exhausted DC state which prevents an immune tolerant DC phenotype. These findings impacts on the rational design of TLR activated DC-based cancer vaccines for the induction of anti-tumoral CTL responses. Keywords: time course
2009-04-22 | GSE11327 | GEO
Project description:Treating samples with anti-CD40, and antibiotics to establish what transcriptional impact antibiotics is having. Anti-CD40 was found to induce a strong inflammatory signature. Antibiotics in combination with anti-CD40 attenuated this resulting in a much improved phenotype. However the detectable transcriptional differences were somewhat modest.
2021-10-25 | GSE159761 | GEO
Project description:Temporal analysis (60, 180, 360 min) of B cells treated with either: CD40 Anti-IgM ELC IL4 Lipopolysaccharide Terbutaline CD40 and IL4 CD40 and Lipopolysaccharide CD40 and Anti-IgM Anti-IgM and ELC Anti-IgM and Terbutaline ELC and Lipopolysaccharide This SuperSeries is composed of the following subset Series: GSE1019: B cell response to Anti-IgM and CD40 treatment GSE1020: B cell response to Anti-IgM and ELC treatment GSE1021: B cell response to Anti-IgM and terbutaline treatment GSE1022: B cell response to CD40 and lipopolysaccharide treatment GSE1023: B cell response to CD40 and IL4 treatment GSE1024: B cell response to ELC and lipopolysaccharide treatment Refer to individual Series
2010-06-09 | E-GEOD-1014 | biostudies-arrayexpress