GD2-CART cells and iPSC-derived GD2-CART cells (scRNA-Seq)
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE245955 | GEO | 2023/10/25
REPOSITORIES: GEO
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Project description:We FACS sorted Ras-transformed human mammary epithelial cells (HMLER cells) into GD2+ and GD2- as well as CD44high/CD24low and CD44low/Cd24highcells and comapred the four different population by array. We FACS sorted Ras-transformed human mammary epithelial cells (HMLER cells) into GD2+ and GD2- as well as CD44high/CD24low and CD44low/Cd24highcells and comapred the four different population by array.
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Project description:The purpose of the experiment was to compare the transcriptional profile of T-cells expressing a GD2-CAR construct or a GD2-CAR.C7R construct (where the GD2-CAR and the C7R construct are co-expressed), after the T-cells had been exposed to two serial tumor cell co-cultures. C7R is an engineered IL-7 receptor that has been rendered constitutively active. The sample replicates were generated using peripheral blood mononuclear cells (PBMCs) obtained from healthy human donors.
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Project description:Cocaine and amphetamine-regulated transcript (CART) is expressed in pancreatic islet cells and neuronal elements. We have previously established insulinotropic actions of CART in human and rodent islets. The receptor for CART in the pancreatic beta cells is unidentified. We used RNA sequencing of Cartpt knock down (KD) INS-1 832/13 cells and identified GPR162 as the most Cartpt-regulated receptor. We therefore tested if GPR162 mediates the effects of CART in beta cells. Binding of CART to GPR162 was established using proximity ligation assay, radioactive binding and co-immunoprecipitation, and KD of Gpr162 mRNA caused reduced binding. Gpr162 KD cells had blunted CARTp-induced exocytosis, and reduced CARTp-induced insulin secretion. Furthermore, we identified a hitherto undescribed GPR162-dependent role of CART as a regulator of cytoskeletal arrangement. Thus, our findings provide mechanistic insight into the effect of CART on insulin secretion and show that GPR162 is the CART receptor in beta cells.
2023-10-20 | GSE245796 | GEO
Project description:Cocaine and amphetamine-regulated transcript (CART) is expressed in pancreatic islet cells and neuronal elements. We have previously established insulinotropic actions of CART in human and rodent islets. The receptor for CART in the pancreatic beta cells is unidentified. We used RNA sequencing of Cartpt knock down (KD) INS-1 832/13 cells and identified GPR162 as the most Cartpt-regulated receptor. We therefore tested if GPR162 mediates the effects of CART in beta cells. Binding of CART to GPR162 was established using proximity ligation assay, radioactive binding and co-immunoprecipitation, and KD of Gpr162 mRNA caused reduced binding. Gpr162 KD cells had blunted CARTp-induced exocytosis, and reduced CARTp-induced insulin secretion. Furthermore, we identified a hitherto undescribed GPR162-dependent role of CART as a regulator of cytoskeletal arrangement. Thus, our findings provide mechanistic insight into the effect of CART on insulin secretion and show that GPR162 is the CART receptor in beta cells.
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Project description:Differentiation of pluripotent stem cells into lentoid bodies is important for the understanding of the lens development and investigating the processes critical for lens morphogenesis. This Study was initiated to investigate a comprehensive proteome profiling of the peripheral blood mononuclear cell (PBMC)-originated, induced pluripotent stem cell (iPSC)-derived lentoid bodies through mass spectrometry-based protein sequencing. Briefly, a small aliquot of blood sample was ascertained to collect PBMCs that were reprogrammed to iPSCs using the Sendai-virus delivery system. The PBMC-originated, iPSCs were differentiated into lentoid bodies employing the “fried egg” method using feeder-free conditions. The quantitative real-time PCR (qRT-PCR) confirmed the expression of lens-associated markers, which exhibited at least an order magnitude increased expression in lentoid bodies at differentiation day 35. Subsequently, the total cellular protein was extracted from lentoid bodies at day 35, digested with trypsin, fractionated into 96 fractions and subjected to an mass spectrometry-based label-free quantitative proteomics. mass spectrometry-based proteome profiling revealed 9,717 proteins in iPSC-derived lentoid bodies at differentiation day 35. In here, we report a comprehensive proteome of PBMC-originated, iPSC-derived lentoid bodies at day 35, which will help in better understanding processes critical for the development of the ocular lens.
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Project description:Differentiation of pluripotent cells to generate lentoid bodies is important for the understanding of the lens development and investigating the processes critical for lens morphogenesis. This Study was initiated to investigate a comprehensive proteome profiling of the peripheral blood mononuclear cell (PBMC)-originated, induced pluripotent stem cell (iPSC)-derived lentoid bodies through mass spectrometry-based protein sequencing. Briefly, a small aliquot of blood sample was ascertained to collect PBMCs that were reprogrammed to iPSCs using the Sendai-virus delivery system. The PBMC-originated, iPSCs were differentiated into lentoid bodies employing the “fried egg” method using feeder-free conditions. The quantitative real-time PCR (qRT-PCR) confirmed the expression of lens-associated markers, which exhibited at least an order magnitude increased expression in lentoid bodies at differentiation day 25. Subsequently, the total cellular protein was extracted from lentoid bodies at day 25, digested with trypsin, fractionated into 24 fractions and subjected to an mass spectrometry-based label-free quantitative proteomics. mass spectrometry-based proteome profiling revealed 9,473 proteins in iPSC-derived lentoid bodies at differentiation day 25. In here, we report a comprehensive proteome of PBMC-originated, iPSC-derived lentoid bodies at day 25, which will help in better understanding processes critical for the development of the ocular lens.
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Project description:We FACS sorted Ras-transformed human mammary epithelial cells (HMLER cells) into GD2+ and GD2- as well as CD44high/CD24low and CD44low/Cd24highcells and comapred the four different population by array.
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Project description:Microbial density and diversity increase in distal intestinal segments, affecting tissue physiology, metabolism, and function of both the immune and nervous systems. We characterized the influence of the microbiota on murine intrinsic enteric-associated neurons (iEAN). We found that iEAN are functionally adapted to the intestinal segment they occupy, with a stronger microbiota influence on ileal and colonic neurons. Chemogenetic characterization of microbiota-influenced iEAN identified a subset of viscerofugal CART+ neurons, enriched in the ileum and colon, able to modulate feeding and glucose metabolism. Retro- and anterograde tracing revealed that CART+ viscerofugal neurons send axons to the prevertebral ganglia and are poly-synaptically connected to the liver and pancreas. Microbiota depletion led to NLRP6 and Caspase 11-dependent loss of CART+ neurons, and impaired liver-mediated gluconeogenesis. Our results demonstrate a region-specific adaptation of enteric neurons and indicate that iEAN subsets are capable of regulating blood glucose levels independently from the central nervous system.
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