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Microbial Community Succession on Steel – SAGs

ABSTRACT: In situ microbial community succession on mild steel in estuarine and marine environments – SSU rRNA gene data from single amplified genomes

PROVIDER: PRJEB12879 | ENA |

REPOSITORIES: ENA

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Microbial Community Succession on Steel – 454 pyrosequencing

Project description:In situ microbial community succession on mild steel in estuarine and marine environments – 454-pyrosequencing data

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Angiogenic patterning by STEEL, an endothelial-enriched long noncoding RNAAngiogenic patterning by STEEL, an endothelial-enriched long noncoding RNA

Project description:Endothelial cell (EC)-enriched protein coding genes, such as endothelial nitric oxide synthase (eNOS), define quintessential EC-specific physiologic functions. It is not clear whether long noncoding RNAs (lncRNAs) also define cardiovascular cell-type specific phenotypes, especially in the vascular endothelium. Here, we report the existence of a set of EC-enriched lncRNAs and define a role for STEEL (spliced transcript – endothelial enriched lncRNA) in angiogenic potential, macrovascular/microvascular identity and shear stress responsiveness. STEEL is expressed from the terminus of the HOXD locus and is transcribed antisense to HOXD transcription factors. STEEL RNA increases the number and integrity of de novo perfused microvessels in an in vivo model and augments angiogenesis in vitro. The STEEL RNA is polyadenylated, nuclear-enriched and has microvascular predominance. Functionally, STEEL regulates a number of genes in diverse endothelial cells. Of interest, STEEL upregulates both eNOS and the transcription factor Kruppel-like factor 2 (KLF2), and is subject to feedback inhibition by both eNOS and shear-augmented KLF2. Mechanistically, STEEL upregulation of eNOS and KLF2 is transcriptionally mediated, in part, via interaction of chromatin-associated STEEL with the poly-ADP ribosylase, PARP1. For instance, STEEL recruits PARP1 to the KLF2 promoter. This work identifies a role for EC-enriched lncRNAs in the phenotypic adaptation of ECs to both body position and hemodynamic forces, and establishes a newer role for lncRNAs in the transcriptional regulation of EC identity.

2018-02-28 | PXD008581 | Pride

Comparison of STEEL siRNA-treated and control siRNA-treated human endothelial cells

Project description:To determine the role of STEEL in endothelial cell (EC) gene regulation, gene expression analysis was conducted on control and STEEL siRNA-treated human dermal microvascular endothelial cells (HMVECs) and human umbilical vein endothelial cells (HUVECs). A total of 225 protein-coding genes were downregulated and 80 were upregulated when both EC types were grouped for analysis. In HMVEC alone, 544 protein-coding genes were downregulated and 218 were upregulated. In HUVEC alone, 177 protein-coding genes were downregulated and 125 were upregulated. Prominently, STEEL siRNA depletion results in the downregulation of two notable protein-coding genes, eNOS and KLF2, which are modulated in ECs subjected to continuous laminar shear stress.

2018-03-30 | GSE108262 | GEO

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