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Homo sapiens

ABSTRACT: RNA-sequencing of keloid derived fibroblasts with or without LSP1P5 knocked down

PROVIDER: PRJNA972830 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24560948_1.fastq.gz	Fastqsanger.gz
	SRR24560948_2.fastq.gz	Fastqsanger.gz
	SRR24560949_1.fastq.gz	Fastqsanger.gz
	SRR24560949_2.fastq.gz	Fastqsanger.gz
	SRR24560950_1.fastq.gz	Fastqsanger.gz

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Homo sapiens

Project description:H3K27me3 CUT&Tag in keloid derived fibroblasts with or without LSP1P5 knocked down

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A new understanding of the molecular pathway in human keloid fibroblasts and development of a novel treatment

Project description:The goals of this study are to compare differential gene expression of normal and keloid fibroblasts with/without treatment using RNA sequencing (Day 1 and 5)

2021-07-21 | GSE117887 | GEO

Transcriptomic analysis of keloid fibroblasts demonstrates reduced expression of vitamin D binding partner Retinoid-X receptor α: Implications for clinical treatment

Project description:Keloids are benign fibroproliferative tumours resulting from skin damage such as trauma, burns or surgery. Keloids are more prevalent in populations with darkly pigmented skin. Links between skin pigmentation and vitamin D production have been established and some studies indicate involvement of vitamin D signalling in keloid pathology. This study assessed the impact of paricalcitol (a selective vitamin D signalling activator) on fibroblasts derived from keloid and normal skin, to further investigate the role and potential clinical relevance of vitamin D signalling in keloid pathology. Analysis of keloid and normal skin tissue using immunohistochemistry demonstrated a significant reduction of nuclear vitamin D receptor (VDR) in keloid tissue. After treatment with paricalcitol, nuclear VDR was increased in both keloid and normal fibroblasts. RNA sequencing of normal fibroblasts treated with paricalcitol demonstrated significant changes in gene expression, with many upregulated genes identified to have anti-fibrotic effects. However, paricalcitol failed to alter gene expression in Keloid fibroblasts. To investigate this further, we performed RNA sequencing of normal and keloid fibroblasts and found that retinoid-X receptor α (RXRα), a key binding partner of VDR required for downstream transcriptional activation, is significantly downregulated in keloid fibroblasts. Our results indicate that paricalcitol can effectively activate VDR translocation to the nucleus but is unable to effect change at the transcriptional level in keloid fibroblasts, most likely due to the reduced expression of RXRα. This suggests Vitamin D signalling may be aberrant in keloids, and that supplementation with Vitamin D alone would likely be ineffective in restoring signalling. Keywords: Keloid, Vitamin D receptor, Paricalcitol, Retinoid-X receptor α

2024-12-03 | GSE282479 | GEO

Homo sapiens whole blood.

Project description:RNA extracted at 240min. Samples are rRNA depleted. Expression measurement of Homo sapiens genes.

2019-07-31 | GSE114179 | GEO

Homo sapiens

Project description:Expression profiling of RBM38-knocked down and control MCF7 cells with and without doxorubicin treatment

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Crystal structure of Homo sapiens kynureninase.

Project description:Kynureninase is a member of a large family of catalytically diverse but structurally homologous pyridoxal 5'-phosphate (PLP) dependent enzymes known as the aspartate aminotransferase superfamily or alpha-family. The Homo sapiens and other eukaryotic constitutive kynureninases preferentially catalyze the hydrolytic cleavage of 3-hydroxy-l-kynurenine to produce 3-hydroxyanthranilate and l-alanine, while l-kynurenine is the substrate of many prokaryotic inducible kynureninases. The human enzyme was cloned with an N-terminal hexahistidine tag, expressed, and purified from a bacterial expression system using Ni metal ion affinity chromatography. Kinetic characterization of the recombinant enzyme reveals classic Michaelis-Menten behavior, with a Km of 28.3 +/- 1.9 microM and a specific activity of 1.75 micromol min-1 mg-1 for 3-hydroxy-dl-kynurenine. Crystals of recombinant kynureninase that diffracted to 2.0 A were obtained, and the atomic structure of the PLP-bound holoenzyme was determined by molecular replacement using the Pseudomonas fluorescens kynureninase structure (PDB entry 1qz9) as the phasing model. A structural superposition with the P. fluorescens kynureninase revealed that these two structures resemble the "open" and "closed" conformations of aspartate aminotransferase. The comparison illustrates the dynamic nature of these proteins' small domains and reveals a role for Arg-434 similar to its role in other AAT alpha-family members. Docking of 3-hydroxy-l-kynurenine into the human kynureninase active site suggests that Asn-333 and His-102 are involved in substrate binding and molecular discrimination between inducible and constitutive kynureninase substrates.

| S-EPMC2531291 | biostudies-literature

Homo sapiens

Project description:Gene Expression Profiling of SPOP Knocked Down Cell

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A microarray of circular RNAs in human keloid dermal fibroblasts

Project description:To further explore the expression of circular RNAs in keloid，we have completed the Arraystar Human circRNA Array V2 analysis of the 8 samples，including 4 patients-derived keloid dermal fibroblasts and 4 normal dermal fibroblasts.

2022-02-23 | GSE184097 | GEO

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