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Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines

ABSTRACT: Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines

PROVIDER: PRJNA656998 | ENA |

REPOSITORIES: ENA

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Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines [18hrs]

Project description:Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines [18hrs]

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Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines

Project description:Exposure to proinflammatory cytokines is believed to contribute to pancreatic β-cells during diabetes development. While some cytokine-mediated changes in islet gene expression are known, the heterogeneity of the response is not well-understood. Following 6 hour treatment with interleukin-1 beta (IL-1β) and interferon-gamma (IFN-γ) alone or together, mouse islets were subjected to single-cell RNA-sequencing (scRNA-seq). Inducible nitric oxide synthase (iNOS) mRNA (Nos2), antiviral genes, and immune-associated genes were induced in a subset of β-cells in response to both cytokines, while IL-1β alone activated only antiviral genes. Subsets of α- and δ-cells expressed Nos2 and exhibited similar gene expression changes as β-cells, including induction of antiviral genes and repression of identity genes. Finally, cytokine-responsiveness was inversely correlated with expression of genes encoding heat shock proteins. Our findings show that all endocrine cell types respond to cytokines, IL-1β induces the expression of protective genes in β-cells, and cellular stress gene expression is associated with an inhibition in cytokine signaling.

2021-04-15 | GSE156175 | GEO

Single-cell RNA-sequencing of mouse islets exposed to proinflammatory cytokines [18hrs]

Project description:Exposure to proinflammatory cytokines is believed to contribute to pancreatic β-cells during diabetes development. While some cytokine-mediated changes in islet gene expression are known, the heterogeneity of the response is not well-understood. Following 18 hour treatment with interleukin-1 beta (IL-1β) and interferon-gamma (IFN-γ) alone or together, mouse islets were subjected to single-cell RNA-sequencing (scRNA-seq). Inducible nitric oxide synthase (iNOS) mRNA (Nos2), antiviral genes, and immune-associated genes were induced in a subset of β-cells in response to both cytokines, while IL-1β alone activated only antiviral genes. Subsets of α- and δ-cells expressed Nos2 and exhibited similar gene expression changes as β-cells, including induction of antiviral genes and repression of identity genes. Finally, cytokine-responsiveness was inversely correlated with expression of genes encoding heat shock proteins. Our findings show that all endocrine cell types respond to cytokines, IL-1β induces the expression of protective genes in β-cells, and cellular stress gene expression is associated with an inhibition in cytokine signaling.

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Human islets exposed to cytokines IL-1β and IFN-γ

Project description:In the context of T1 Diabetes, pro-inflammatory cytokines IL-1β and IFN-γ are known to contribute to β-cell apoptosis; The measurement of mRNA expression following β-cell exposure to these cytokines gives a picture of the changes in gene expression characterizing the path to β-cell dysfunction and death. Human islets were isolated and exposed (or not) to IL-1β and IFN-γ. The samples were collected at various time points for profiling with Affymetrix arrays. These measurements were performed three times.

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Single-cell RNA sequencing of mouse islets exposed to proinflammatory cytokines.

Project description: Not available

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IL-17B promotes proinflammatory cytokines expression in mouse lung tissues

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Deficiency of RPSA reduces binding of P65 to proinflammatory cytokines promoter regions in HSV-1 infection

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Project description:To identify genes expressed in islets in response to metabolic and inflammatory stress, we performed total RNA-Seq on isolated human islets exposed to IL-1β in the presence of high glucose. Gene ontology (GO) analysis of upregulated transcripts indicated enrichment of genes associated with cytokine signaling and proinflammatory responses. Multiple cytokines and chemokines were induced, and several key regulators of oxidative and ER stress responses were upregulated. The results revealed acute induction of proinflammatory transcripts and upregulation of genes involved in oxidative and ER stress in human islets in response to IL-1β and high glucose. Blockade of CN/NFAT signaling by FK506 pretreatment resulted in suppression of genes required for islet cell differentiation, development, and function.

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