Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA758796 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15725700_1.fastq.gz | Fastqsanger.gz | |||
| SRR15725700_2.fastq.gz | Fastqsanger.gz | |||
| SRR15725701_1.fastq.gz | Fastqsanger.gz | |||
| SRR15725701_2.fastq.gz | Fastqsanger.gz | |||
| SRR15725702_1.fastq.gz | Fastqsanger.gz |
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Project description:Gene expression profiling of human atherosclerotic plaque: Carotid plaque
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Project description:This SuperSeries is composed of the following subset Series: GSE23303: Gene expression profiling of human atherosclerotic plaque: Laser capture microscopy of smooth muscle cells and macrophages GSE23304: Gene expression profiling of human atherosclerotic plaque: 101 peripheral plaques GSE24495: Gene expression profiling of human atherosclerotic plaque: Carotid plaque GSE24702: Gene expression profiling of human atherosclerotic plaque: 290 peripheral plaques Refer to individual Series
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Project description:Protein profiles were determined from different distinct regions of human atherosclerotic plaques, including: internal control, fatty streak, plaque shoulder, plaque centre, and fibrous cap. Protein extracts from all 5 regions, from 3 men and 3 women, were separated by two-dimensional gel electrophoresis (in total 30 2-DE gels). Stained gels were matched by protein spot distribution, and a protein mapping was performed to identify as many protein spots as possible, by MALDI-TOF MS / peptide mass fingerprinting (Voyager DE Pro; Applied Biosystems). This resulted in the identification of 97 protein spots, corresponding to 52 unique protein by accession number. To expand on this nLC-MS/MS (Easy-nLC / LTQ Orbitrap Velos Pro; Thermo Fisher Scientific) experiments were run on additional carotid plaque samples from 10 men and 10 women, using three of the predefined regions; internal control, fatty streak, plaque core. MS/MS analysis resulted in the identification of over 1000 proteins. Human carotid atherosclerotic plaques (n = 26) were obtained from the Linköping Carotid Study, and all methods/protocols described herein have been approved by the local ethics committee (Linköping University Hospital, Linköping, Sweden). Written informed consent was also obtained from all patients.
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Project description:Atherosclerotic plaques belong to the common vascular disease in the aged, which rupture will lead to acute thromboembolic diseases, the major reason for fatal cardiovascular events. Accumulating evidence indicates that lncRNAs exert critical functions in atherosclerosis. To identify novel astherosclerotic plaques-relevant lncRNAs, four specimens of carotid atherosclerotic plaque were collected, and endovascular tissue one centimeter far from the carotid atherosclerotic plaque was taken as a control group, we performed lncRNA microarray analysis using Affymetrix Human OElncRNA
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Project description:The rupture of unstable atherosclerotic plaques, leading to debilitating or fatal thrombotic events, is a major health burden worldwide. Limited understanding as to the molecular drivers of plaque instability and rupture hinders efforts in diagnosis and treatment prior to thrombotic events. Utilising an advanced pre-clinical mouse model (Tandem stenosis (TS) model), which presents human-like unstable atherosclerotic disease, we apply high-end omic methods to characterize the molecular signatures associated with plaque instability in atherosclerotic arteries. Through quantitative proteomic profiling, we depict unique proteome signatures of unstable plaques compared to stable plaques and healthy arteries. Coupled with single-cell RNA-sequencing of leukocytes, we describe the heterodimer complex S100a8/S100a9 as unique to unstable plaque, with neutrophils implicated as the transcriptional drivers of S100a8/a9 expression. We confirm S100a9 expression in human carotid atherosclerotic plaques and we further utilise the TS pre-clinical model to pharmacologically inhibit S100a8/S100a9, resulting in plaque stabilisation. Thus, we establish the TS model as a sophisticated translational tool for the profiling of unstable atherosclerotic plaques and demonstrate that unstable and stable atherosclerosis are highly different disease entities.
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Project description:In order to identify potential new biomarkers of atherosclerotic plaque composition we performed a large scale analysis of gene expression patterns in human atherosclerotic lesions. Whole genome expression analysis of 101 peripheral plaques identified a robust gene signature (1514 genes) dominated by inflammatory processes, and cholesterol metabolism and storage genes. Specific pathways enriched in this signature included activation of the Toll-like receptor signaling pathway, T-cell activation, cholesterol efflux, oxidative stress response, inflammatory cytokine production, vasoconstriction and lysosomal activity. Analysis of gene expression in plaque micro-dissected material revealed that the signature is strongly up-regulated in macrophage-rich regions and down-regulated in regions with high smooth muscle cell content. A smaller qPCR biomarker panel and inflammatory composite score (ICS) were developed to facilitate clinical translation of discoveries from gene expression profiling. We found that ICS correlates with histological features related to plaque vulnerability. In addition, ICS is able to separate groups of plaques obtained from symptomatic and asymptomatic patients undergoing carotid endarerectomy. In summary, we identified a robust mRNA biomarker panel associated with histo-pathological as well as clinical hallmarks of vulnerable atherosclerotic plaque. This panel may be used as a diagnostic and prognostic tool in clinical setting to evaluate novel anti-atherosclerotic therapies. Laser captured smooth muscle cells and macrophages from carotid plaque sections (n=3) profiled in the Merck/Agilent 44k v1.1. The reference sample was a pool RNA from whole sections.
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Project description:In order to identify potential new biomarkers of atherosclerotic plaque composition we performed a large scale analysis of gene expression patterns in human atherosclerotic lesions. Whole genome expression analysis of 101 peripheral plaques identified a robust gene signature (1514 genes) dominated by inflammatory processes, and cholesterol metabolism and storage genes. Specific pathways enriched in this signature included activation of the Toll-like receptor signaling pathway, T-cell activation, cholesterol efflux, oxidative stress response, inflammatory cytokine production, vasoconstriction and lysosomal activity. Analysis of gene expression in plaque micro-dissected material revealed that the signature is strongly up-regulated in macrophage-rich regions and down-regulated in regions with high smooth muscle cell content. A smaller qPCR biomarker panel and inflammatory composite score (ICS) were developed to facilitate clinical translation of discoveries from gene expression profiling. We found that ICS correlates with histological features related to plaque vulnerability. In addition, ICS is able to separate groups of plaques obtained from symptomatic and asymptomatic patients undergoing carotid endarerectomy. In summary, we identified a robust mRNA biomarker panel associated with histo-pathological as well as clinical hallmarks of vulnerable atherosclerotic plaque. This panel may be used as a diagnostic and prognostic tool in clinical setting to evaluate novel anti-atherosclerotic therapies. Total RNA from peripheral plaque (n=101) profiled in the Merck/Agilent 44k v1.1 against a reference pool of total RNA from 7 carotid plaques.
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