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Reprogramming of heterologous cells by defined factors to generate lineage-restricted biomolecules

ABSTRACT: Reprogramming of heterologous cells by defined factors to generate lineage-restricted biomolecules

PROVIDER: PRJNA429335 | ENA |

REPOSITORIES: ENA

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Reprogramming of heterologous cells by defined factors to generate lineage-restricted biomolecules

Project description:The ability of transcriptional regulators to drive lineage conversion of somatic cells offers great potential for the treatment of human disease. While current research in this field is focused on the generation of induced pluripotent stem cells or direct lineage transdifferentiation, less attention has been paid to the possibility of reprogramming cells to produce cytokines, growth factors and hormones. To explore the concept of switching on specific target genes in heterologous cells, we developed a model system to screen candidate factors for their ability to activate the archetypal megakaryocyte-specific chemokine platelet factor 4 (PF4) in fibroblasts. We found that co-expression of the transcriptional regulators GATA1 and FLI1 resulted in a significant increase in levels of PF4, which became magnified over time. We also determined that inclusion of a third factor, TAL1, further enhanced upregulation of PF4 expression. Our study therefore identified of TAL1 as an important component in the combination of transcriptional regulators that contribute to megakaryocyte programming, and demonstrated that such combinations can be used to produce potentially beneficial chemokines in readily available heterologous cell types.

2018-01-11 | GSE108983 | GEO

Partial reprogramming of heterologous cells by defined factors to generate megakaryocyte lineage-restricted biomolecules.

Project description:The ability of transcriptional regulators to drive lineage conversion of somatic cells offers great potential for the treatment of human disease. To explore the concept of switching on specific target genes in heterologous cells, we developed a model system to screen candidate factors for their ability to activate the archetypal megakaryocyte-specific chemokine platelet factor 4 (PF4) in fibroblasts. We found that co-expression of the transcriptional regulators GATA1 and FLI1 resulted in a significant increase in levels of PF4, which became magnified over time. This finding demonstrates that such combinations can be used to produce potentially beneficial chemokines in readily available heterologous cell types.

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Project description:Human alveolar progenitors generate dual lineage bronchioalveolar organoids

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Heterologous Microarray Hybridization Between Vesicomyid Symbionts

2008-11-28 | GSE13447 | GEO

Heterologous Microarray Hybridization Between Vesicomyid Symbionts

Project description:The goal of this study was to use heterologous microarray hybridization to determine genomic content shared among different vesicomyid symbionts. These symbionts are closely related and can be thought of as different strains of bacteria, facilitating the use of heterologous microarray hybridization to determine genomic content. Keywords: comparative genomic hybridization Microarrays were built off the Ruthia magnifica genome and two replicate hybridizations to this organism were used as a baseline for comparisons. Genomic DNA from two other vesicomyid symbionts (Calyptogena kilmeri and C. pacifica symbionts) was also hybridized to the array with three biological replicates for each sample.

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Heterologous Microarray Hybridization Between Vesicomyid Symbionts

Project description:Heterologous Microarray Hybridization Between Vesicomyid Symbionts

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Lineage-restricted regulation of SCD and fatty acid saturation by MITF controls melanoma phenotypic plasticity

Project description:Phenotypic and metabolic heterogeneity within tumors is a major barrier to effective cancer therapy. Yet how metabolism is implicated in specific phenotypes, and whether lineage-restricted mechanisms control key metabolic vulnerabilities remains poorly understood. In melanoma, down-regulation of the lineage addiction oncogene Microphthalmia-associated Transcription Factor (MITF) is a hallmark of the proliferative-to-invasive phenotype switch, though how MITF promotes proliferation and suppresses invasion is poorly defined. Here we show that MITF is a lineage restricted activator of the key lipogenic enzyme stearoyl-CoA desaturase (SCD), and that SCD is required for MITFHigh melanoma cell proliferation. By contrast MITFLow cells are insensitive to SCD inhibition. Significantly, the MITF-SCD axis suppresses metastasis, inflammatory signalling, and an ATF4-mediated feedback-loop that maintains dedifferentiation. Our results reveal that MITF is a lineagespecific regulator of metabolic reprogramming, whereby fatty acid composition is a driver of melanoma phenotype-switching, and highlight that cell phenotype dictates response to drugs targeting lipid metabolism.

2019-10-16 | GSE137390 | GEO

Comparison between calorie-restricted and time-restricted without calorie restriction

Project description:Comparison between calorie-restricted and time-restricted without calorie restriction

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High throughput ribosome profiling of E. coli expressing a library of heterologous proteins

Project description:Heterologous gene expression to expand the native genetic capability of E. coli is the backbone of protein expression and metabolic engineering. The goal of this study was to determine how the identity of the heterologous gene expressed affected the host cell transcriptome. We generated a library of E. coli expressing 46 heterologous genes through an identical rhamnose inducible expression system and perform high throughput ribosome profiling.

2022-07-07 | GSE134324 | GEO

Adaptive laboratory evolution with heterologous pgi

Project description:We used RNA-seq to profile E. coli K-12 MG1655 strains subjected to adaptive laboratory evolution after knockout of endogenous glucose-6-phosphate isomerase (pgi) and subsequent expression of heterologous version of the pgi gene from Pseudomonas aeruginosa and Bacillus megaterium.

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