Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA174727 | ENA |
REPOSITORIES: ENA
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Project description:The study was completed to compare expression profiles of primary human beta cells (in the form of adult human islets), to the expression profile of hESC-derived beta-like cells. A HES3 line modified by homologous recombination to express GFP under the insulin promoter allowed us to FACS sort the hESC-derived cells into purified insulin-positive (presumably beta-like cells), and insulin-negative populations. Expression profile of adult human islets from cadaveric donors is compared to insulin-positive and insulin-negative populations of hESC-derived beta-like cells
2012-09-09 | E-GEOD-40709 | biostudies-arrayexpress
Project description:The study was completed to compare expression profiles of primary human beta cells (in the form of adult human islets), to the expression profile of hESC-derived beta-like cells. A HES3 line modified by homologous recombination to express GFP under the insulin promoter allowed us to FACS sort the hESC-derived cells into purified insulin-positive (presumably beta-like cells), and insulin-negative populations.
2012-09-09 | GSE40709 | GEO
Project description:Human pluripotent stem cells (hPSCs) have the potential to generate any human cell type, and one widely recognized goal is to make pancreatic β cells. To this end, comparisons between differentiated cell types produced in vitro and their in vivo counterparts are essential to validate hPSC-derived cells. Genome-wide transcriptional analysis of sorted insulin-expressing (INS(+)) cells derived from three independent hPSC lines, human fetal pancreata, and adult human islets points to two major conclusions: (i) Different hPSC lines produce highly similar INS(+) cells and (ii) hPSC-derived INS(+) (hPSC-INS(+)) cells more closely resemble human fetal β cells than adult β cells. This study provides a direct comparison of transcriptional programs between pure hPSC-INS(+) cells and true β cells and provides a catalog of genes whose manipulation may convert hPSC-INS(+) cells into functional β cells RNA is isolated and processed using MARIS from the following samples: H1 human embryonic stem cells (hESCs) in duplicate, HUES8 hESCs in duplicate, human induced pluripotent stem cells (hiPSCs) in duplicate, H1 cells differentiated to a stage in which insulin-expressing cells are present (stage 6) in duplicate, HUES8 cells differentiated to stage 6 in duplicate, hiPSCs differentiated to stage 6, insulin-expressing cells sorted from H1 cells differentiated to stage 6 in duplicate, insulin-expressing cells sorted from HUES8 cells differentiated to stage 6 in duplicate, insulin-expressing cells sorted from hiPSCs differentiated to stage 6 in duplicate, human week 16 fetal pancreata in duplicate, insulin-expressing cells sorted from human week 16 fetal pancreata in triplicate, adult human pancreatic islets in triplicate, and insulin-expressing cells sorted from adult human pancreatic islets in triplicate.
2014-03-25 | E-GEOD-56130 | biostudies-arrayexpress
Project description:Objective: The developmental effects of mutations in genes associated with monogenic diabetes on human pancreas development is not well understood. More specifically, if insulin gene recessive mutations influence the human endocrine lineage segregation still needs to be investigated. Methods: We generated a novel knock-in H2B-Cherry reporter human induced pluripotent stem cell (iPSCs) line expressing no insulin upon differentiation to stem cell-derived (SC-) β cells in vitro. This cell line enabled us to have a model mimicking the extremely reduced insulin levels in patients with recessive insulin mutations. We combined immunostaining, Western blotting and proteomics analysis to characterize the SC-islets from this iPSC line. Furthermore, we leveraged FACS analysis and imaging to explore the impact of insulin shortage on human endocrine cell induction, composition and proliferation. Results: We found that lack of insulin hampers insulin receptor (IR) signaling in SC-islets but increases the IR sensitivity. Furthermore, insulin deficiency showed no effects on human endocrine lineage induction. However, lack of insulin skewed the SC-islet cell composition. We found an increased in SC-β cell number at the expense of SC-α cell differentiation in the absence of insulin. Finally, insulin shortage reduced the rate of SC-β cell proliferation but had no impact of the expansion of SC-α cells. Conclusions: We provided evidence of the developmental impacts of reduced insulin levels on human β cell characteristics and endocrine lineage formation. These findings help to better understand the pathomechanisms of recessive insulin mutations during embryonic development and also shed some lights on the possible physiological function of this hormone coordinating human islet cell composition and architecture during endocrinogenesis.
2024-01-17 | PXD045366 | Pride
Project description:We aimed to assess whether Wnt-modulation could contribute to mature hiPSC-derived insulin-producing cells in vitro. Building our hypothesis on our previous findings of Wnt activation in immature hiPSC-derived insulin-producing cells compared to adult human islets and with recent data reporting a link between Wnt/PCP and in vitro beta-cell maturation. In this study we stimulated hiPSC-derived insulin-producing cells with syntetic proteins including WNT3A, WNT4, WNT5A and WNT5B as well as inhibiting endogeneous Wnt signaling with Tankyrase inhibitor G007-LK.
2019-11-13 | PXD012081 | Pride
Project description:The activity of pancreatic islets’ insulin-producing β-cells is closely regulated by systemic cues and, locally, by adjacent islet hormone-producing “non-β-cells” (namely α-, δ- and γ-cells). Still, it is unclear whether the presence of the non-β-cells is a requirement for accurate insulin secretion. Here, we generated and studied a mouse model in which adult islets are exclusively composed of β-cells, and human pseudoislets containing only primary β-cells. Mice lacking non-β-cells had optimal blood glucose regulation. They exhibited enhanced glucose tolerance, insulin sensitivity and restricted body weight gain under high-fat diet. The insulin secretion dynamics in islets composed of only β-cells was like in intact islets, both in homeostatic conditions and upon extreme insulin demand. Similarly, human β-cell pseudoislets retained the glucose-regulated mitochondrial respiration, insulin secretion and exendin-4 responses of human islets comprising all four cell types. Together, the findings indicate that non-β-cells are dispensable for blood glucose homeostasis and β-cell function. This is particularly relevant in diabetes, where non-β-cells become dysfunctional and worsen the disease’s pathophysiology. These results support efforts aimed at developing diabetes treatments by generating β-like cell clusters devoid of non-β-cells, as for example from human embryonic stem cells and/or by in situ conversion of non-β-cells into insulin producers.
2024-07-19 | GSE226479 | GEO
Project description:KSP-positive or -negative cells derived from mouse embryonic stem cells
| PRJNA174629 | ENA
Project description:Human pluripotent stem cell-derived islets (hPSC-islets) are a promising cell resource for diabetes treatment. Here, we demonstrate that transplantation of human pluripotent stem cell-derived islets into diabetic nonhuman primates effectively restored endogenous insulin secretion and improved glycemic control. Single-cell RNA sequencing analysis of S6D2 clusters confirmed the existence of the three major pancreatic endocrine cell populations (β cells, α-like cells and δ-like cells) and their proportions, which altogether accounted for 80%. Importantly, hierarchical clustering of S6D2 hCiPSC-islets, 10 wpt kidney grafts and primary human islets showed that the hCiPSC differentiated pancreatic endocrine cells shared similar global gene expression profiles to their native counterparts in primary human islets. Single-cell RNA sequencing analysis on PBMCs revealed the potential immune response of recipient macaque to hCiPSC-islets.
2022-02-04 | GSE185037 | GEO
Project description:Human pluripotent stem cell-derived islets (hPSC-islets) are a promising cell resource for diabetes treatment. Here, we demonstrate that transplantation of human pluripotent stem cell-derived islets into diabetic nonhuman primates effectively restored endogenous insulin secretion and improved glycemic control. Single-cell RNA sequencing analysis of S6D2 clusters confirmed the existence of the three major pancreatic endocrine cell populations (β cells, α-like cells and δ-like cells) and their proportions, which altogether accounted for 80%. Importantly, hierarchical clustering of S6D2 hCiPSC-islets, 10 wpt kidney grafts and primary human islets showed that the hCiPSC differentiated pancreatic endocrine cells shared similar global gene expression profiles to their native counterparts in primary human islets. Single-cell RNA sequencing analysis on PBMCs revealed the potential immune response of recipient macaque to hCiPSC-islets.
2022-02-04 | GSE185035 | GEO
Project description:In order to investigate the characteristics and mechanisms of embryonic stem cell derived exosomes attenuates transverse aortic constriction induced ventricular remodeling, the proteomic profiles of human embryonic stem cell derived exosomes were analysed by label-free quantification.
2020-12-10 | PXD023105 |