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Fatty acid binding proteins shape the cellular response to activation of the glucocorticoid receptor

ABSTRACT: Fatty acid binding proteins shape the cellular response to activation of the glucocorticoid receptor

PROVIDER: PRJNA747920 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15187026.fastq.gz	Fastqsanger.gz
	SRR15187027.fastq.gz	Fastqsanger.gz
	SRR15187028.fastq.gz	Fastqsanger.gz
	SRR15187029.fastq.gz	Fastqsanger.gz
	SRR15187030.fastq.gz	Fastqsanger.gz

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Fatty acid binding proteins shape the cellular response to activation of the glucocorticoid receptor

Project description:Glucocorticoids are steroid hormones that are essential for life in mammals. Therapeutically, they are some of the most cost-effective drugs for the treatment of inflammatory diseases ranging from skin rashes to COVID-19, but their use is limited by adverse effects. Glucocorticoids exert their effects via the glucocorticoid receptor, a type I nuclear hormone receptor which modulates gene expression. The transcriptional activity of some related, but nuclear restricted, type II nuclear hormone receptors can be enhanced by a family of intracellular transport proteins, the fatty acid binding proteins (FABPs). We find that the transcriptional activity of the GR can be altered by a sub-set of FABP family members dependent on the GR-ligand. The ability of some FABPs to selectively promote or limit the transcriptional activity of the GR in a ligand-dependent manner could facilitate the discovery of drugs that narrow GR activity to only the desired subset of therapeutically relevant genes.

2021-07-22 | GSE180341 | GEO

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Glucocorticoid promotes fatty acids metabolism in hypertrophic scar tissues and fibroblasts via the microRNA

Project description:Hypertrophic scar (HS) is a skin lesion due to abnormal wound healing after skin injury; histologically, HS is characterized by deposition of excessive amounts of the extracellular matrix and collagen produced by wound healing-induced proliferative fibroblasts. Clinically, HS management includes surgical resection of HS, topical glucocorticoid therapy or drug injections, pressure therapy, fractional carbon dioxide laser therapy, and cryotherapy. In terms of non-surgical therapy, glucocorticoids (like Triamcinolone acetonide, a synthetic corticosteroid medication used topically to treat various skin conditions) was able to effectively inhibit HS formation safely for decades. The effects of glucocorticoids may either be due to its anti-inflammatory, anti-allergenic and immunomodulatory effects or activate fatty acids metabolism by promotion of lipid accumulation in fibroblasts. However, it is no clear why and how glucocorticoids-upregulated fatty acid metabolisms benefit in HS treatment and prevention.And it remains to be defined how altered microRNAs regulated-fatty acid metabolism involved in pathological scars.

2023-02-25 | GSE225646 | GEO

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Project description:Fatty acid-binding proteins contribute to the pathogenesis of pulmonary hypertension [bulk RNA-seq]

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Project description:Binding of transcription factors to DNA is mediated by the recognition of the chemical signatures of the DNA bases and the three-dimensional shape of the DNA molecule. The direct contribution of DNA shape to DNA-binding specificity has been difficult to assess, as DNA shape is a consequence of its sequence. Here, we teased apart these two modes of recognition in the context of Hox-DNA binding. We made a series of mutations in Hox residues that, in a co-crystal structure, only recognize DNA shape, and tested the effect on DNA binding preferences using SELEX-seq. Analysis of shape features of selected sequences revealed that these residues are both necessary and sufficient for selection of sequences with distinct shape features. We used statistical machine learning to show that the accuracy of binding specificity predictions improves by adding shape features to a model that only depends on sequence. We conclude that shape readout is a direct and critical component of binding site selection by Hox proteins. Three rounds of SELEX were performed on a series of Hox mutants as described in Slattery et al, Cell, 2011 (PMID 22153072) and Riley et al, Methods in molecular Biology, 2014 (PMID 25151169). Briefly, His-tagged Scr and Antp mutant proteins were incubated with a randomized 16mer oligonucleotide library, and bound DNA was amplified and sequenced as described (PMID 22153072, PMID 25151169).

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ETS family proteins bind glucocorticoid receptor: relevance for treatment of Ewing sarcoma

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SHAPE:Isoseq

Project description:SHAPE:Isoseq

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Role of fatty acid synthase in oligodendrocyte myelination

Project description:In the central nervous system, oligodendrocytes encase axons with myelin, a highly organized multilayered membrane structure. Myelin allows the rapid propagation of action potentials along the axons, while also supporting their mantainance metabolically. Fatty acids are basic building blocks for both glyco- and phospholipids, key constituents of cell membranes. Moreover, fatty acids can modify proteins via palmitoylation and activate transcriptional networks, e.g. through the PPARs transcription factors. Due to the high demand of membrane oligodendrocytes face to produce myelin, we hypothesized that they strongly rely upon fatty acid synthesis rather than mostly on their intake from the dietary pool. We tested this hypothesis by deleting the enzyme Fatty Acid Synthase specifically from neonatal oligodendrocyte progenitor cells, in vivo in C57Bl/6 olig2Cre FASN floxed mice. We addressed the consequences of this depletion on oligodendrocytes differentation and myelination potential in the central nervous system. In particular, we analyzed by RNA-seq how lack of FASN affected the transcriptome of optic nerves dissected from P14 mutant (olig2Cre FASN lox/lox) versus control (FASN lox/lox) mice.

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2018-05-23 | GSE93102 | GEO

Glucocorticoid promotes fatty acids metabolism in hypertrophic scar tissues and fibroblasts via the microRNA

Project description:Glucocorticoid promotes fatty acids metabolism in hypertrophic scar tissues and fibroblasts via the microRNA

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