Project description:miRNAs and other small RNAs have been found associated with high-density lipoproteins (HDL). The aim of this study was to investigate the miRNA signature on human HDL from 10 donors.
Project description:miRNAs are exported to high density lipoproteins (HDL). This study aimed to understand what miRNAs are exported from primary islets to HDL in vitro.
Project description:miRNAs are exported to high density lipoproteins (HDL). This study aimed to understand what miRNAs are exported from INS-1 cells to HDL in vitro.
Project description:miRNAs are exported to high density lipoproteins (HDL). This study aimed to understand what miRNAs are present in primary human islets from 1 donor
Project description:We quantified differential gene (mRNA) expression in human coronary artery cells treated with native HDL, reconstituted HDL, lipid-free apolipoprotein A-I, small unilamellar vesicles, or PBS control. These data were used to determine which genes are regulated by native HDL compared to components of HDL and categorize data based on shared sets of genes and distinct sets of genes regulated by each component.
Project description:We quantified differential microRNA (miRNA) expression in human coronary artery cells treated with native HDL, reconstituted HDL, lipid-free apolipoprotein A-I, small unilamellar vesicles, or PBS control. These data were used to determine whichmiRNAs are regulated by native HDL compared to components of HDL and categorize data based on shared sets of miRNAs and distinct sets of miRNAs regulated by each component.
Project description:The aim of this study was to identify HDL and apoE-regulated genes in human placental endothelial cells (HPEC), which are exposed to fetal HDL. HPECs extracted from 5 human placentas were cultivated and treated for 16 h with 15ug/ml fetal HDL, 15ug/ml reconstituted HDL (rHDL), or endothelial basal medium (EBM) as vehicle control. Gene expression analysis from these 3 conditions (5 biological replicates) using 15 Applied Biosystems Human Whole Genome Survey V2.0 Microarrays was perfomed and significantly differentially expressed genes between two different groups (HDL vs control or rHDL vs control) were identified.
Project description:Circulating microRNAs (miRNA) are relatively stable in plasma and are a new class of disease biomarkers. Here we present evidence that human high-density lipoprotein (HDL) transports endogenous miRNAs and delivers them to recipient cells with functional targeting capabilities. Highly-purified fractions of human HDL contain small RNAs, and the HDL-miRNA profile from normal subjects is significantly different than familial hypercholesterolemia subjects. miRNAs were demonstrated to associate with both native and reconstituted HDL particles, and reconstituted HDL injected into mice retrieved distinct miRNA profiles from normal and atherogenic models. Cellular export of miRNAs to HDL was demonstrated to be regulated by neutral sphingomyelinase. HDL-mediated delivery of miRNAs to recipient cells was demonstrated to be scavenger receptor BI-dependent. Furthermore, HDL delivery of both exogenous and endogenous miRNAs resulted in the direct targeting of mRNA reporters. Notably, HDL-miRNA from atherosclerotic subjects induced differential gene expression, with significant loss of conserved mRNA targets in cultured hepatocytes. Collectively, these observations suggest that HDL participates in a novel mechanism of intercellular communication involving the transport and delivery of miRNAs. Human HDL miRNA Signatures Profiled miRNA Signatures from N=6 Normal Human HDL; n=5 FH Human HDL