Pro-inflammatory cytokines were shown to promote growth and survival of cancerous cells. TNF induced RelA:p50 NF-B dimer via the canonical pathway is thought to link inflammation with cancer. Integrating biochemical and computational studies we identify that deficiency of non-canonical signal transducer p100 triggers a positive autoregulatory loop, which instead perpetuates an alternate RelB:p50 containing NF-B activity upon TNF treatment. TNF stimulated RelB:p50 dimer is sufficient for mediating NF-B target gene-expressions and suppressing apoptotic cellular death independent of principal NF-B subunit RelA. We further demonstrate that activating mutations in non-canonical NF-B module deplete multiple myeloma cells of p100, thereby, provoking autoregulatory RelB:p50 activation. Finally, autoregulatory control reinforces protracted pro-survival NF-B response, albeit comprising of RelB:p50, upon TNF priming that protects myeloma cells with dysfunctional p100 from subsequent apoptotic insults. In sum, we present evidence for positive autoregulation mediated through the NF-B system and its potential involvement in human neoplasm.
Non-canonical NFκB mutations reinforce pro-survival TNF response in multiple myeloma through an autoregulatory RelB:p50 NFκB pathway.
Specimen part, Treatment
View SamplesWe have discovered rifampicin as a glycation inhibitor, which increases life span in C elegans. In order to understand the mechanism of rifampicin action, microarray analysis was performed to study the changes in gene expression brought about by the drug.
Rifampicin reduces advanced glycation end products and activates DAF-16 to increase lifespan in Caenorhabditis elegans.
Specimen part
View SamplesBoth leukemia inhibitory factor (LIF) and interleukin-6 (IL-6) increase the invasiveness of JEG-3 and HTR-8/SVneo cells. This study examines the effect of LIF and IL-6 on gene expression in trophoblastic cell models viz. JEG-3 and HTR-8/SVneo cells to decipher the molecular basis of the increase in invasiveness.
No associated publication
Cell line, Treatment
View SamplesTwo biological replicate experiments were performed to estimate the bias of the gene expression pattern of infected and non-infected HEp-2 cells. Microarrays hybridized with RNA from 2 h of non-infected HEp-2 cells were used as reference chips for the comparison with microarrays hybridized with RNA from 2 h and 4 h of eukaryotic cells exposed to wt-bacteria and .fasX-mutant. As a reference for chips hybridized with RNA prepared from 6 h p. i. and 8 h p. i. of both GAS-infected HEp-2 cells we used chips that were hybridized with RNA isolated from non-infected cells 8 h p. i. We also compared the microarray data from 2 h of non-infected HEp-2 cells with those from 8 h of non-infected HEp-2 cells to determine the influence of the extended culture on the non-infected cells. Only such genes which were differentially regulated after infection with wt-bacteria and .fasX-mutant infected cells and not differentially present in unequal amounts between the 2 h and 8 h of controls were included in the subsequent statistical analysis.
Global epithelial cell transcriptional responses reveal Streptococcus pyogenes Fas regulator activity association with bacterial aggressiveness.
Disease, Disease stage, Cell line, Time
View Samplesto compare the gene expression between naive, non-Tfh, Tfh and GC-Tfh cells
No associated publication
Sex, Specimen part, Cell line
View SamplesWe purified five subsets representing the main stages of human precursor-B-cell differentiation and CD34+lin- cord blood cells. The immunoglobulin (Ig) gene rearrangement status was determined using TaqMan quantitative PCR and GeneScan analysis. To gain more insight in the networks of genes that initiate and/or regulate the different types of Ig gene rearrangements, we analyzed their gene expression profiles by correlating the initiation of Ig gene rearrangements with specific upregulation of transcription factors. In addition to previously described transcription factors, we identified 16 candidate genes involved in initiation and/or regulation of Ig gene rearrangements.
No associated publication
Specimen part
View SamplesTo gain more insight into initiation and regulation of T cell receptor (TCR) gene rearrangement during human T cell development, we analyzed TCR gene rearrangements by quantitative PCR analysis in nine consecutive T-cell developmental stages, including CD34+ lin- cord blood cells as a reference. The same stages were used for gene expression profiling using DNA microarrays.
New insights on human T cell development by quantitative T cell receptor gene rearrangement studies and gene expression profiling.
Specimen part
View SamplesInvestigation of pH induced gene expression changes in bone-marrow-derived macrophages
No associated publication
Sex, Age, Specimen part, Disease, Treatment
View SamplesInverstigation of differential gene expresseion in tumor-associated macrophages of WT-and Icer- knockout mice
No associated publication
Sex, Age, Specimen part, Disease
View SamplesGPCR19 pathway has been implicated in regulating various inflammation. However, the exact mechanism of immune regulation by GPCR19 pathway has not been elucidated in detail.
Taurodeoxycholate Increases the Number of Myeloid-Derived Suppressor Cells That Ameliorate Sepsis in Mice.
Sex, Specimen part
View Samples