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Next Generation Sequencing Facilitates Quantitative Analysis of Bone Marrow-Derived Macrophages Transcriptomes for Acly-E14 ASO effects

ABSTRACT: Purpose: The purpose of this study is to detect activated or silenced genes during bone marrow derived macrophages (BMDMs) transfected with control siRNA or Acly-E14 siRNA. Gene expression differences between two samples could be found using transcriptome profiling (RNA-seq) analysis. Methods: Mouse BMDMs were generated from bone marrow cells in RPMI-1640 medium with recombinant mouse M-CSF (20ng/ml). BMDMs were stained to confirm the surface expression of CD11b and F4/80. Cells with purity >97.5% were used for subsequent experiments. BMDMs were transfected with control ASO or Acly-E14 ASO. 48 hour later, they were stimulated with LPS (100ng/ml) for 4 hours, of which RNA profiles were generated by deep sequencing, using Illumina. Results: We mapped about 10 million sequence reads per sample to the mouse genome, identified hundreds of genes with significant mRNA variation between BMDMs transfected with the indicated ASOs.

ORGANISM(S): Mus musculus

PROVIDER: GSE272304 | GEO | 2024/11/06

REPOSITORIES: GEO

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Next Generation Sequencing Facilitates Quantitative Analysis of Bone Marrow-Derived Macrophages Transcriptomes for Acly-E14 siRNA effects

Project description:Purpose: The purpose of this study is to detect activated or silenced genes during bone marrow derived macrophages (BMDMs) transfected with control siRNA or Acly-E14 siRNA. Gene expression differences between two samples could be found using transcriptome profiling (RNA-seq) analysis. Methods: Mouse BMDMs were generated from bone marrow cells in RPMI-1640 medium with recombinant mouse M-CSF (20ng/ml). BMDMs were stained to confirm the surface expression of CD11b and F4/80. Cells with purity >97.5% were used for subsequent experiments. BMDMs were transfected with control siRNA or Acly-E14 siRNA. 48 hour later, they were stimulated with LPS (100ng/ml) for 4 hours, of which RNA profiles were generated by deep sequencing, using Illumina. Results: We mapped about 10 million sequence reads per sample to the mouse genome, identified hundreds of genes with significant mRNA variation between BMDMs transfected with the indicated siRNAs.

2024-11-06 | GSE240188 | GEO

Expression data by ACLY knockdown

Project description:De novo lipogenesis is activated in most cancers. Several lipogenic enzymes are implicated in oncogenesis and represent potential cancer therapeutic targets. RNA interference-mediated depletion of ATP citrate lyase (ACLY), the enzyme that catalyzes the first step of de novo lipogenesis, leads to growth suppression in a subset of human cancer cells. Here we demonstrate the molecular basis and potential biomarkers for ACLY-targeting therapy. First, suppression of cancer cell growth by ACLY depletion involves down-regulation of fatty acid elongase ELOVL6 at the transcriptional level. Lipid profiling revealed that ACLY depletion alters fatty acid composition in triglyceride; increased palmitate and decreased longer fatty acids, in accordance with ELOVL6 down-regulation. Second, ACLY depletion increases reactive oxygen species (ROS), whereas addition of antioxidant reduces ROS and attenuates the growth suppression. Third, ACLY depletion or ROS stimulation induce phosphorylation of AMP-activated protein kinase (AMPK), a sensor of energy and lipid metabolism. Analysis of various cancer cell lines revealed that the levels of AMPK phosphorylation (p-AMPK) correlate with the basal ROS levels, and that cancer cells with low basal p-AMPK (i.e., low basal ROS) levels are highly susceptible to ACLY depletion-mediated growth suppression. Finally, in clinical colon cancer tissues, p-AMPK levels are significantly decreased in aggressive tumors and correlate with the levels of 8-hydroxydeoxyguanosine, a hallmark of ROS stimulation. Together, these data suggest that ACLY inhibition suppresses cancer growth via palmitate-mediated lipotoxicity, and p-AMPK could be a predictive biomarker for its therapeutic outcome. Two cell lines are treated with ACLY siRNA. The samples include controls of each cell line.

2014-04-13 | E-GEOD-37243 | biostudies-arrayexpress

Next Generation Sequencing Facilitates Quantitative Analysis of wild type and Rbm25-deficient Bone Marrow Derived macrophage Transcriptomes

Project description:Purpose: The purpose of this study is to detect activated or silenced genes during wild type (WT) and Rbm25-deficient bone marrow derived macrophages (BMDMs). Gene expression differences between two samples could be found using transcriptome profiling (RNA-seq) analysis. Methods: Mouse BMDMs were generated from bone marrow cells in RPMI-1640 medium with recombinant mouse M-CSF (20ng/ml). BMDMs were stained to confirm the surface expression of CD11b and F4/80. Cells with purity >97.5% were used for subsequent experiments. WT and Rbm25 deficient BMDMs were stimulated with LPS (100ng/ml) for 0, 2 or 8 hours, of which RNA profiles were generated by deep sequencing, using Illumina. Results: We mapped about 10 million sequence reads per sample to the mouse genome, identified hundreds of genes with significant mRNA variation between WT and Rbm25 deficient BMDMs.

2024-11-06 | GSE240157 | GEO

H3K9ac and H3K27ac Cut&Tag profiling of wild type and Rbm25-deficient Bone Marrow Derived macrophage

Project description:Purpose: To transcriptome widely reveal histone acetylation modification H3K9ac and H3K27ac regulation by Rbm25, we performed Cleavage Under Targets and Tagmentation (CUT&Tag) analysis of wild-type (WT) and Rbm25-deficiency BMDMs. Methods: Mouse BMDMs were generated from bone marrow cells in RPMI-1640 medium with recombinant mouse M-CSF (20ng/ml). BMDMs were stained to confirm the surface expression of CD11b and F4/80. Cells with purity >97.5% were used for subsequent experiments. WT and Rbm25 deficient BMDMs were stimulated with LPS (100ng/ml) for 4 hours. Results: We carried out CUT&Tag assays using antibody against H3K9ac or H3K27ac, and found the global influence of Rbm25 in regulating H3K9ac and H3K27ac of transcription regulatory regions of key genes for inflammatory macrophage effector function.

2024-11-06 | GSE240158 | GEO

ACLY and ACC1 Regulate Hypoxia-Induced Apoptosis by Modulating ETV4 via Î±-ketoglutarate

Project description:In order to propagate a solid tumor, cancer cells must adapt to and survive under various tumor microenvironment (TME) stresses, such as hypoxia or lactic acidosis. To systematically identify genes that modulate cancer cell survival under stresses, we performed genome-wide shRNA screens under hypoxia or lactic acidosis. We discovered that genetic depletion of acetyl-CoA carboxylase (ACACA or ACC1) or ATP citrate lyase (ACLY) protected cancer cells from hypoxia-induced apoptosis. Additionally, loss of ACLY or ACC1 reduced levels and activities of the oncogenic transcription factor ETV4. Silencing ETV4 also protected cells from hypoxia-induced apoptosis and led to remarkably similar transcriptional responses as with silenced ACLY or ACC1, including an anti-apoptotic program. Metabolomic analysis found that while Î±-ketoglutarate levels decrease under hypoxia in control cells, Î±-ketoglutarate is paradoxically increased by hypoxia when ACC1 or ACLY are depleted. Supplementation with Î±-ketoglutarate rescued the hypoxia-induced apoptosis and recapitulated the decreased expression and activity of ETV4 via an epigenetic mechanism. Therefore, ACC1 and ACLY regulate the levels of ETV4 under hypoxia via increased Î±-ketoglutarate. These results reveal that ACC1/ACLY- Î±-ketoglutarate-ETV4 is a novel means by which metabolic states regulate transcriptional output for life vs. death decisions under hypoxia. Since many lipogenic inhibitors are under investigation as cancer therapeutics, our findings suggest that the use of these inhibitors will need to be carefully considered with respect to oncogenic drivers, tumor hypoxia, progression and dormancy. More broadly, our screen provides a framework for studying additional tumor cell stress-adaption mechanisms in the future. DESIGN: H1975 lung cancer cells transduced with a scramble shRNA hairpin or two different shRNAs against ACLY, ACC1, or ETV4 under hypoxia.

2015-12-10 | E-GEOD-61286 | biostudies-arrayexpress

Expression data by ACLY knockdown

2014-04-13 | GSE37243 | GEO

Hepatic ACLY deficiency and bempedoic acid drive divergent responses to dietary lipid

Project description:ATP citrate lyase (ACLY) synthesizes acetyl-CoA for de novo lipogenesis (DNL), which is elevated in non-alcoholic fatty liver disease. Hepatic ACLY is inhibited by the LDL-cholesterol lowering drug bempedoic acid (BPA), which has been shown to improve steatosis in mice. However, the acetyl-CoA synthetase ACSS2 can compensate for ACLY deficiency to support DNL, potentially complicating the targeting of ACLY. We show that hepatic loss of both ACLY and ACSS2 reduces DNL. Nevertheless, even when ACSS2 is suppressed by dietary or genetic means, we find that steatosis is counterintuitively exacerbated with hepatic ACLY deficiency in mice fed a Western diet (WD), linked to reduced expression of PPARa target genes controlling fatty acid oxidation. Conversely, BPA treatment increased fat catabolism and ameliorated WD-mediated lipid accumulation in both WT and liver ACLY knockout mice. Thus, hepatic ACLY plays an unexpected role in restraining diet-dependent lipid accumulation, and BPA improves steatosis independent of ACLY.

2024-08-01 | GSE247358 | GEO

LINE1 and PRC2 control nucleolar organization and repression of the 8C-state in human ESCs [RNA-Seq_RSeT+DT_H9_L1KD+siRNA-KD]

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2024-09-07 | GSE232932 | GEO

Effect of ACLY inhibition on LPS-induced EC gene profiles

Project description:To investigate the regulatory role of ACLY activation in EC functions, we treated HUVEC with ACLY inhibitor BMS-303141 before LPS stimuli. We then performed gene expression profiling analysis using data obtained from RNA-seq of HUVEC lysates.

2023-09-11 | GSE216178 | GEO

Identification of s-RNYs targets in bone marrow-derived macrophages

Project description:Bone marrow-derived macrophages (BMDMs) were collected from 4 C57BL/6J males and transfected with siRNAs against the terminal loop of mouse RNYs and control. 48 hr after transfection, the total RNA was isolated by using RNAeasy kit (Qiagen) and mRNA profiling was performed on Agilent Sureprint whole genomemicroarrays. The normalized data were analyzed with Biometric Research Branch (BRB) array tools 3.8.0. Log2-transformed signal intensities were used to identify probes with at least 1.2 fold change of expression difference between BMDMs overexpressing s-RNYs and control, and with a statistically significant p-value (p<0.05). One color design, corresponding to 2 conditions performed on 4 mice: siRNA against terminal loop of RNY versus Control (Ct) siRNA for a total of 8 samples.

2015-09-16 | E-GEOD-47518 | biostudies-arrayexpress

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