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Characterization of EndoC-BH5 a novel human pancreatic beta cell line

ABSTRACT: Characterization of EndoC-BH5 a novel human pancreatic beta cell line

PROVIDER: PRJNA932316 | ENA |

REPOSITORIES: ENA

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Characterization of EndoC-BH5 a novel human pancreatic beta cell line. Comparative expression profile with EndoC-BH1 and effect of stimulation with Interferon gamma and interleukin 1b.

Project description:We have developped a novel human pancreatic beta cell line: EndoC-βH5. EndoC-βH5 cells are ready-to-use and storable cells with physiological insulin secretion. EndoC-βH5 cells were generated by integrative gene transfer of immortalizing transgenes hTERT and SV40 large T along with Herpes Simplex Virus-1 thymidine kinase into human fetal pancreas. Immortalizing transgenes were removed after amplification using CRE activation and remaining non-excized cells eliminated using ganciclovir. Resulting cells were distributed as ready to use EndoC-βH5 cells. We performed comparative transcriptome analysis with EndoC-βH1 cells , extensive functional and immunological assays. RNA-seq confirmed abundant expression of beta cell transcription factors and functional markers, including incretin receptors.

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Transcriptome profile of human pancreatic beta cell line (EndoC-M-NM-2H2 ) following knockdown of RFX6.

Project description:RFX6 is a key transcription factor for the development of mouse pancreas, however the functional roles of RFX6 in human beta cells are poorly explored. Thus transcriptome analysis was perfomed to determine the functional targets of RFX6 in human beta cells using the recently developed human beta cell-line EndoC-M-NM-2H2. Transcriptome profile of human beta cell line (EndoC-M-NM-2H2 cells) following siRNA induced knockdown of RFX6 is compared with siControl (siNT) treated EndoC-M-NM-2H2 cells.

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Project description:Access to an unlimited number of human pancreatic beta cells represents a major challenge in the field of diabetes to better dissect human beta cell functions and to make significant progress in drug discovery and cell replacement therapies. We previously reported the generation of the EndoC-bH1 human beta cell line that was generated by targeted oncogenesis in human fetal pancreases followed by in vivo cell differentiation in mice. Such cell line displayed many functional properties of adult beta cells. Here we devised a novel strategy to generate conditionally immortalized human beta cell lines based on CRE-mediated excision of immortalizing transgenes. The resulting EndoC-bH2 cell line can be massively amplified in vitro. Transgenes are next efficiently excised upon CRE expression leading to cell proliferation arrest and strong enhancement of beta cell specific features such as insulin expression, content and secretion. Excised EndoC-bH2 cells are close to authentic human beta cells and represent a unique tool to further study beta cell function and to understand why adult human beta cells are refractory to proliferation and how to achieve drug-dependent mobilization towards beta cell expansion. Expression profile of human beta cell lineEndoC-bH2 before and after excision of an immortalization cassette (SV40 LT and hTERT) is compared to human exocrine pancreas cell line SKPC and adult human islets from cadaveric donors. Three replicates were used for each sample group. The three adult human islets samples were taken from GEO series GSE40709 (GSM999550, GSM999551 and GSM999552) and normalized with H357 and SKPC cell line samples using RMA.

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Characterization of EndoC-BH5 a novel human pancreatic beta cell line. Comparative expression profile after stimulation stimulation with Interferon gamma and interleukin 1b.

Project description:Responsiveness of EndoC-BH5 cells to cytokines was examined by RNA-seq of cells treated with IFNγ and IL1β for 24 h. The treatment resulted in profound changes in their transcriptome and upregulation of genes involved in the inflammatory pathwayand antigen processing and presentation, similar to previous studies on EndoC-BH1 cells and adult human islets. EndoC-BH5 cells hence represent a powerful tool to investigate the dialogue between beta cells and the immune system.

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The effect of extreme hyperglycemia on the expression program of the human beta cell line EndoC-betaH2

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Project description:Gene expression in EndoC-bH1 human beta-cell line

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