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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Effects of Morus alba L. (Mulberry) Leaf Extract in Hypercholesterolemic Mice on Suppression of Cholesterol Synthesis

ABSTRACT: To investigate effects of intake of mulberry leaf extracts on hypercholesterolemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that mulberry leaf extracts up-regulated the gene expression involved in suppression of cholesterol synthesis and stimulation of innate-adaptive Immunity. Mice were fed a high-cholesterol diet without/with orally administration of mulberry leaf extracts for 4 weeks. Livers were taken for RNA extraction and hybridization on Agilent microarrays.

ORGANISM(S): Mus musculus

SUBMITTER: Yukihiro Kobayashi

PROVIDER: E-GEOD-65839 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Effects of Morus alba L. (Mulberry) Leaf Extract in Hypercholesterolemic Mice on Suppression of Cholesterol Synthesis

Project description:To investigate effects of intake of mulberry leaf extracts on hypercholesterolemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that mulberry leaf extracts up-regulated the gene expression involved in suppression of cholesterol synthesis and stimulation of innate-adaptive Immunity.

2016-01-01 | GSE65839 | GEO

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Gene expression profiling of HepG2 cells treated with hawk tea extracts vs. DMSO-treated control group

Project description:Hawk tea (Litsea coreana var. lanuginose) is a traditional Chinese tea, widely cultivated and consumed in southwestern China. It has been widely used to treat gastrosis, hepatitis, and inflammatory diseases for hundreds of years. Modern pharmacological studies demonstrate that hawk tea has protective effects against liver fibrosis, hypercholesterolemia, hyperglycemia, and inflammatory diseases . However, the molecular mechanism of hawk tea against hypercholesterolemia remains unclear. The aims of this study were to investigate the mechanisms of hawk tea extract (HTE) to lower cholesterol. Therefore, we performed genome-wide transcriptional analysis of hawk tea extracts treated HepG2 cells. Hawk tea extracts (HTE) induced significant gene modulation on HepG2 cells.

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Gene expression profiling of HepG2 cells treated with extracts of hawk tea vs. DMSO-treated control group

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Mexican Ganoderma lucidum extracts decrease lipogenesis modulating transcriptional metabolic networks and gut microbiota in C57BL/6 mice fed with a high-cholesterol diet from early Drosophila embryo

Project description:Background: Prevention of hyperlipidemia and associated diseases is a health priority. Complementary medicine based on scientific evidence has recently recognized the potential of natural products for modulating lipid metabolism, such as the medicinal mushroom Ganoderma lucidum (Gl), which possesses hypocholesterolemic, prebiotic and antidiabetic properties. Methods: Whole-transcriptomic changes in liver and kidney from a mouse model (C57BL/6), under a high-cholesterol diet and standardized Gl extracts (Gl-1, Gl-2) or simvastatin administration, were analyzed to determine Gl hypocholesterolemic activity. Further effects of Gl extracts on lipid metabolism were evaluated using an in vitro hepatic-like macrophage model. Additionally, correlations among hepatic gene expression, microbiota and serum lipid profiles in vivo established by Gl extracts were evaluated. Results: Based on the hepatic and renal mRNA profiles of mice treated with Gl extracts and high-cholesterol diet, we identified relevant metabolic pathways modulated by Gl involving the restriction of lipid biosynthesis and the enrichment of lipid degradation and secretion. We further showed that Gl extracts induce a significant decrease of macrophage lipid storage and cholesterol biosynthesis, which occurs concomitantly by the down-modulation of Fasn and Elovl6. We also determined that prebiotic effects of Gl extracts modulating gut microbiota are correlated with the gene expression portraits. Conclusions: Our high-throughput analysis allowed to identify key transcriptomic nodes established by Gl extracts and their interaction with microbiome composition related to lipid catabolic signaling. Our results indicated that our Gl extracts have a robust potential to be used as transcriptome modulators and prebiotic agents to prevent metabolic disorders associated to hypercholesterolemia.

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Offsprings of crosses between hypercholesterolemic and normocholesterolemic parents LUMC-HKG-ApoE-Atherosclerosis

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AIBP-mediated Cholesterol Efflux Instructs Hematopoietic Stem and Progenitor Cell Fate

Project description:Hypercholesterolemia, the driving force of atherosclerosis, accelerates the expansion and mobilization of hematopoietic stem and progenitor cells (HSPCs). The molecular determinants connecting hypercholesterolemia with hematopoiesis are underexplored. Here we report that a novel somite-derived pro-hematopoietic cue, AIBP, orchestrates HSPC emergence from the hemogenic endothelium, a type of specialized endothelium manifesting hematopoietic potential. Mechanistically, AIBP-mediated cholesterol efflux activates endothelial Srebp2, the master transcription factor for cholesterol biosynthesis, which transactivates Notch and promotes HSPC emergence. Srebp2 inhibition impairs hypercholesterolemia-induced HSPC expansion. Srebp2 activation and Notch upregulation are associated with HSPC expansion in hypercholesterolemic human subjects. Genome-wide ChIP-seq, RNA-seq, and ATAC-seq indicate that Srebp2 trans-regulates Notch pathway genes required for hematopoiesis. Our studies outline a novel AIBP-regulated Srebp2-dependent paradigm for HSPC emergence in development and HPSC expansion in atherosclerotic cardiovascular disease.

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Transcription profiling of mouse offspring of crosses between hypercholesterolemic and normocholesterolemic parents LUMC-HKG-ApoE-Atherosclerosis

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