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Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE203385 | GEO | 2022/09/14

REPOSITORIES: GEO

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Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β cells.

Project description:IFNα is a key regulator of the dialogue between pancreatic β cells and the immune system in early type 1 diabetes (T1D). IFNα up-regulates HLA class I expression in human β cells, fostering autoantigen presentation to the immune system. We observed by bulk and single-cell RNA sequencing that exposure of human induced pluripotent-derived islet-like cells to IFNα induces expression of HLA class I and of other genes involved in antigen presentation, including the transcriptional activator NLRC5. We next evaluated the global role of NLRC5 in human insulin-producing EndoC-βH1 and human islet cells by RNA sequencing and targeted gene/protein determination. NLRC5 regulates expression of HLA class I, antigen presentation-related genes, and chemokines. NLRC5 also mediates the effects of IFNα on alternative splicing, a generator of β cell neoantigens, suggesting that it is a central player of the effects of IFNα on β cells that contribute to trigger and amplify autoimmunity in T1D.

| S-EPMC9473574 | biostudies-literature

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC scRNAseq]

Project description:IFNa is a key regulator of the dialogue between pancreatic β-cells and the immune system in early type 1 diabetes (T1D). IFNa up-regulates HLA class I expression in human β-cells fostering autoantigen presentation to the immune system. We observed by bulk and single cell RNA sequencing that exposure of human induced pluripotent-derived islet-like cells to IFNa induces expression of HLA class I and of other genes involved in antigen presentation, including the transcriptional activator NLRC5. We next evaluated the global role of NLRC5 in human insulin-producing EndoC-βH1 and human islets cells by RNA sequencing and targeted gene/protein determination. NLRC5 regulates expression of HLA class I expression and related genes and of chemokines. NLRC5 also mediates the effects of IFNa on alternative splicing, a generator of β-cell neoantigens, suggesting that it is a central mediator of the effects of IFNa on β-cells that contribute to trigger and amplify autoimmunity in T1D.

2022-09-14 | GSE203384 | GEO

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [RNA-seq]

2022-09-14 | GSE202852 | GEO

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC bulk RNAseq]

Project description:IFNa is a key regulator of the dialogue between pancreatic β-cells and the immune system in early type 1 diabetes (T1D). IFNa up-regulates HLA class I expression in human b-cells fostering autoantigen presentation to the immune system. We observed by bulk and single cell RNA sequencing that exposure of human induced pluripotent-derived islet-like cells to IFNa induces expression of HLA class I and of other genes involved in antigen presentation, including the transcriptional activator NLRC5. We next evaluated the global role of NLRC5 in human insulin-producing EndoC-bH1 and human islets cells by RNA sequencing and targeted gene/protein determination. NLRC5 regulates expression of HLA class I expression and related genes and of chemokines. NLRC5 also mediates the effects of IFNa on alternative splicing, a generator of β-cell neoantigens, suggesting that it is a central mediator of the effects of IFNa on β-cells that contribute to trigger and amplify autoimmunity in T1D.

2022-09-14 | GSE203430 | GEO

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells

Project description:Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells

| PRJNA839721 | ENA

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC scRNAseq]

Project description:Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC scRNAseq]

| PRJNA839716 | ENA

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [RNA-seq]

Project description:Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [RNA-seq]

| PRJNA837538 | ENA

Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC bulk RNAseq]

Project description:Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β-cells [iPSC bulk RNAseq]

| PRJNA840844 | ENA

Sox9 regulates alternative splicing and pancreatic beta cell function

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-10-18 | GSE245406 | GEO

Interferon-beta enhances sensitivity to gemcitabine in pancreatic cancer.

Project description:BackgroundAdjuvant gemcitabine for pancreatic cancer has limited efficacy in the clinical setting. Impaired drug metabolism is associated with treatment resistance. We aimed to evaluate the chemosensitising effect of interferon-beta (IFN-β).MethodsBxPC-3, CFPAC-1, and Panc-1 cells were pre-treated with IFN-β followed by gemcitabine monotherapy. The effect on cell growth, colony formation, and cell cycle was determined. RT-qPCR was used to measure gene expression. BxPC-3 cells were used in a heterotopic subcutaneous mouse model.ResultsIFN-β increased sensitivity to gemcitabine (4-, 7.7-, and 1.7-fold EC50 decrease in BxPC-3, CFPAC-1, and Panc-1, respectively; all P < 0.001). Findings were confirmed when assessing colony formation. The percentage of cells in the S-phase was significantly increased after IFN-β treatment only in BxPC-3 and CFPAC-1 by 12 and 7%, respectively (p < 0.001 and p < 0.05, respectively). Thereby, IFN-β upregulated expression of the drug transporters SLC28A1 in BxPC-3 (252%) and SLC28A3 in BxPC-3 (127%) and CFPAC-1 (223%) (all p < 0.001). In vivo, combination therapy reduced tumor volume with 45% (P = 0.01). Both ex vivo and in vivo data demonstrate a significant reduction in the number of proliferating cells, whereas apoptosis was increased.ConclusionsFor the first time, we validated the chemosensitising effects of IFN-β when combined with gemcitabine in vitro, ex vivo, and in vivo. This was driven by cell cycle modulation and associated with an upregulation of genes involving intracellular uptake of gemcitabine. The use of IFN-β in combination with gemcitabine seems promising in patients with pancreatic cancer and needs to be further explored.

| S-EPMC7513525 | biostudies-literature

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