To identify systemic cytokine patterns in Chronic Graft-versus-Host-Disease (CGVHD), we profiled the gene expression of circulating monocytes. Pathway analysis identified two gene sets that were significantly upregulated across a broad range of patients with inflammatory and sclerotic presentations: (1) genes induced by Type I and Type II IFN, and (2) receptor genes for innate immune responses to cellular damage. Multiple IFN-inducible genes involved in signal transduction, anti-viral function, lymphocyte homeostasis, trafficking, and antigen presentation were increased. Furthermore, upregulation of TLR/NLR/CLR receptor genes for nucleic acids, ribonucleoproteins and annexin implicated response to damaged cells as a source of activation of inflammasomes and induction of Type I IFN.
Upregulation of IFN-Inducible and Damage-Response Pathways in Chronic Graft-versus-Host Disease.
Specimen part, Disease
View SamplesAdoptive immunotherapies using genetically-redirected T cells expressing a chimeric antigen receptor (CAR) or T cell receptor (TCR) are poised to enter mainstream clinical practice. Despite encouraging results, some patients fail to respond to current therapies. In part, this phenomenon has been associated with infusion of a reduced number of early memory T cells. Herein, we report that pharmacologic disruption of AKT-signaling (AKTi) is compatible with the transduction of both CARs and TCRs into human T cells and promotes a minimally differentiated CD62L-expressing phenotype. Critically, this intervention did not compromise cell yield. Mechanistically, disruption of AKT-signaling preserved MAPK activation and promoted the intra-nuclear accumulation of FOXO1, a key transcriptional regulator of T-cell memory. Consequently, AKTi synchronized the T-cell transcriptional profile for FOXO1-dependent target genes across multiple donors. Expression of an AKT-resistant FOXO1 mutant phenocopied the influence of AKTi while addition of AKTi to T cells expressing mutant FOXO1 failed to further augment the frequency of CD62L-expressing cells. Finally, CD19 CAR-modified T cells transduced and expanded in AKTi treated established B-cell acute lymphoblastic leukemia superiorly to conventionally grown T cells in a murine xenograft model. Thus, inhibition of AKT-signaling represents a generalizable strategy to generate large numbers of receptor-modified T cells with an early memory phenotype.
Inhibition of AKT signaling uncouples T cell differentiation from expansion for receptor-engineered adoptive immunotherapy.
Treatment, Subject, Time
View SamplesHepatocellular carcinoma (HCC) is the second most common cause of cancer related death. NAFLD affects a large proportion of the US population. Its incidence and prevalence are increasing to epidemic proportions around the world and is known to increase the risk of HCC. We studied how intrahepatic lipids affect adaptive immunity and HCC development in different murine models of NASH and HCC. Linoleic acid, a fatty acid found in NAFLD caused a selective loss of hepatic CD4+ but not CD8+ T cells leading to accelerated hepatocarcinogenesis. CD4+ T cells were more dependent on oxidative phosphorylation for energy source than CD8+ T cells, and disruption of oxidative phosphorylation by linoleic acid caused more severe damage in CD4+ T cells leading to selective loss of these cells. In vivo blockade of ROS using n-acetylcysteine reversed the NASH-induced hepatic CD4+ T cell decrease and delayed NASH-promoted HCC. Our results provide a new link between lipid metabolism and impaired anti-tumor surveillance.
NAFLD causes selective CD4(+) T lymphocyte loss and promotes hepatocarcinogenesis.
No sample metadata fields
View SamplesThrough a diversity of functional lineages, cells of the innate and adaptive immune system either drive or constrain immune reactions within tumors. Thus, while the immune system has a powerful ability to recognize and kill cancer cells, this function is often suppressed preventing clearance of disease. The transcription factor (TF) BACH2 controls the differentiation and function of multiple innate and adaptive immune lineages, but its role in regulating tumor immunity is not known. Here, we demonstrate that BACH2 is required to establish immunosuppression within tumors. We found that growth of subcutaneously implanted tumors was markedly impaired in Bach2-deficient mice and coincided with intratumoral activation of both innate and adaptive immunity but was dependent upon adaptive immunity. Analysis of tumor-infiltrating lymphocytes in Bach2-deficient mice revealed high frequencies of CD4+ and CD8+ effector cells expressing the inflammatory cytokine IFN-. Lymphocyte activation coincided with reduction in the frequency of intratumoral CD4+ Foxp3+ regulatory T (Treg) cells. Mechanistically, Treg-dependent inhibition of CD8+ T cells was required for BACH2-mediated tumor immunosuppression. These findings demonstrate that BACH2 is a key component of the molecular programme of tumor immunosuppression and identify a new target for development of therapies aimed at reversing immunosuppression in cancer.
The transcription factor BACH2 promotes tumor immunosuppression.
Specimen part
View SamplesWe investigated the route of neurotrophic cue delivery to the nerves
Loss of p53 drives neuron reprogramming in head and neck cancer.
Specimen part
View SamplesComparison between cell lines from 9 different cancer tissue of origin types (Breast, Central Nervous System, Colon, Leukemia, Melanoma, Non-Small Cell Lung, Ovarian, Prostate, Renal) from NCI-60 panel
Multifactorial regulation of E-cadherin expression: an integrative study.
Sex, Age, Specimen part, Disease, Disease stage, Cell line, Time
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Mapping Complex Traits in a Diversity Outbred F1 Mouse Population Identifies Germline Modifiers of Metastasis in Human Prostate Cancer.
Cell line
View SamplesRelatively little is understood about the dynamics of global hostpathogen transcriptome changes that occur during bacterial infection of mucosal surfaces. To test the hypothesis that group A Streptococcus (GAS) infection of the oropharynx provokes a host transcriptome response, we performed genome-wide transcriptome analysis using a nonhuman primate model of experimental pharyngitis. We also identified host and pathogen biological processes and individual host and pathogen gene pairs with correlated patterns of expression, suggesting interaction. For this study, 509 host genes and seven biological pathways were differentially expressed throughout the entire 32-day infection cycle. GAS infection produced an initial widespread significant decrease in expression of many host genes, including those involved in cytokine production, vesicle formation, metabolism, and signal transduction. This repression lasted until day 4, at which time a large increase in expression of host genes was observed, including those involved in protein translation, antigen presentation, and GTP-mediated signaling. The interactome analysis identified 73 host and pathogen gene pairs with correlated expression levels. We discovered significant correlations between transcripts of GAS genes involved in hyaluronic capsule production and host endocytic vesicle formation, GAS GTPases and host fibrinolytic genes, and GAS response to interaction with neutrophils. We also identified a strong signal, suggesting interaction between host T cells and genes in the GAS mevalonic acid synthesis pathway responsible for production of isopentenyl-pyrophosphate, a short-chain phospholipid that stimulates these T cells. Taken together, our Q:2 results are unique in providing a comprehensive understanding of the hostpathogen interactome during mucosal infection by a bacterial pathogen.
Interactome analysis of longitudinal pharyngeal infection of cynomolgus macaques by group A Streptococcus.
Sex, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Integrated cross-species transcriptional network analysis of metastatic susceptibility.
Specimen part
View SamplesBacterial superantigens are virulence factors that cause toxic shock syndrome. Here, the genome-wide, temporal response of mice to lethal intranasal staphylococcal enterotoxin B (SEB) was investigated in six tissues (PBMC, lung, spleen, kidney, heart, Liver).The earliest responses and largest number of affected genes occurred in tissues (PBMCs, spleen and lung) with the highest content of both T-cells and monocyte/macrophages, the direct cellular targets of SEB. In contrast, the response of liver, kidney and heart was delayed and involved fewer genes, but revealed a dominant genetic program that was seen in all 6 tissues. Many of the 85 uniquely annotated transcripts participating in this shared genomic response have not been previously linked to SEB. Global gene-expression changes measured serially across multiple organs identified new candidate mechanisms of SEB-induced death.
Late multiple organ surge in interferon-regulated target genes characterizes staphylococcal enterotoxin B lethality.
Sex, Specimen part
View Samples