Search Results - "Covey, Douglas F."
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The Transcription Factor STAT-1 Couples Macrophage Synthesis of 25-Hydroxycholesterol to the Interferon Antiviral Response
Published in Immunity (Cambridge, Mass.) (24-01-2013)“…Recent studies suggest that the sterol metabolic network participates in the interferon (IFN) antiviral response. However, the molecular mechanisms linking IFN…”
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2
Fatty acid synthesis configures the plasma membrane for inflammation in diabetes
Published in Nature (London) (10-11-2016)“…Mice with macrophages deficient in fatty acid synthase exhibit lower levels of diabetes-related insulin resistance and inflammation, qualities that are…”
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3
Lysosomal cholesterol activates mTORC1 via an SLC38A9–Niemann-Pick C1 signaling complex
Published in Science (American Association for the Advancement of Science) (24-03-2017)“…The mechanistic target of rapamycin complex 1 (mTORC1) protein kinase is a master growth regulator that becomes activated at the lysosome in response to…”
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4
Structural basis of Smoothened regulation by its extracellular domains
Published in Nature (London) (28-07-2016)“…Structural studies show that the activity of the G-protein-coupled receptor Smoothened is modulated by ligand-regulated interactions between its extracellular…”
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5β-Dihydrosteroids: Formation and Properties
Published in International journal of molecular sciences (14-08-2024)“…5β-Dihydrosteroids are produced by the reduction of Δ -3-ketosteroids catalyzed by steroid 5β-reductase (AKR1D1). By analogy with steroid 5α-reductase, genetic…”
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6
Cholesterol Stabilizes TAZ in Hepatocytes to Promote Experimental Non-alcoholic Steatohepatitis
Published in Cell metabolism (05-05-2020)“…Incomplete understanding of how hepatosteatosis transitions to fibrotic non-alcoholic steatohepatitis (NASH) has limited therapeutic options. Two molecules…”
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Multiple functional neurosteroid binding sites on GABAA receptors
Published in PLoS biology (01-03-2019)“…Neurosteroids are endogenous modulators of neuronal excitability and nervous system development and are being developed as anesthetic agents and treatments for…”
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Cholesterol activates the G-protein coupled receptor Smoothened to promote Hedgehog signaling
Published in eLife (05-10-2016)“…Cholesterol is necessary for the function of many G-protein coupled receptors (GPCRs). We find that cholesterol is not just necessary but also sufficient to…”
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A Proinflammatory Stimulus Disrupts Hippocampal Plasticity and Learning via Microglial Activation and 25-Hydroxycholesterol
Published in The Journal of neuroscience (08-12-2021)“…Inflammatory cells, including macrophages and microglia, synthesize and release the oxysterol 25-hydroxycholesterol (25HC), which has antiviral and…”
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10
Oxysterols are allosteric activators of the oncoprotein Smoothened
Published in Nature chemical biology (08-01-2012)“…20( S )-hydroxycholesterol binds to Smo at a site distinct from cyclopamine and activates signaling via an allosteric mechanism. A new alkyne oxysterol analog…”
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Neurosteroids as novel antidepressants and anxiolytics: GABA-A receptors and beyond
Published in Neurobiology of stress (01-11-2019)“…The recent FDA approval of the neurosteroid, brexanolone (allopregnanolone), as a treatment for women with postpartum depression, and successful trials of a…”
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Cholesterol accessibility at the ciliary membrane controls hedgehog signaling
Published in eLife (30-10-2019)“…Previously we proposed that transmission of the hedgehog signal across the plasma membrane by Smoothened is triggered by its interaction with cholesterol…”
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13
25-Hydroxycholesterol amplifies microglial IL-1β production in an apoE isoform-dependent manner
Published in Journal of neuroinflammation (17-06-2020)“…Genome-wide association studies of Alzheimer's disease (AD) have implicated pathways related to lipid homeostasis and innate immunity in AD pathophysiology…”
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Neurosteroids mediate and modulate the effects of pro-inflammatory stimulation and toll-like receptors on hippocampal plasticity and learning
Published in PloS one (14-06-2024)“…Pro-inflammatory changes contribute to multiple neuropsychiatric illnesses. Understanding how these changes are involved in illnesses and identifying…”
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Metabolism of Non-Enzymatically Derived Oxysterols: Clues from sterol metabolic disorders
Published in Free radical biology & medicine (20-11-2019)“…Cholestane-3β,5α,6β-triol (3β,5α,6β-triol) is formed from cholestan-5,6-epoxide (5,6-EC) in a reaction catalysed by cholesterol epoxide hydrolase, following…”
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Stereospecific requirement of cholesterol in the function of the serotonin1A receptor
Published in Biochimica et biophysica acta (2014)“…The serotonin1A receptor is an important member of the G protein-coupled receptor (GPCR) family. It is involved in the generation and modulation of a variety…”
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Quantitative imaging of membrane contact sites for sterol transfer between endo-lysosomes and mitochondria in living cells
Published in Scientific reports (26-04-2021)“…Mitochondria receive cholesterol from late endosomes and lysosomes (LE/LYSs) or from the plasma membrane for production of oxysterols and steroid hormones…”
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18
Hedgehog-Interacting Protein is a multimodal antagonist of Hedgehog signalling
Published in Nature communications (09-12-2021)“…Hedgehog (HH) morphogen signalling, crucial for cell growth and tissue patterning in animals, is initiated by the binding of dually lipidated HH ligands to…”
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The Structural Basis of Cholesterol Accessibility in Membranes
Published in Biophysical journal (15-10-2013)“…Although the majority of free cellular cholesterol is present in the plasma membrane, cholesterol homeostasis is principally regulated through sterol-sensing…”
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Development of a bile acid-based newborn screen for Niemann-Pick disease type C
Published in Science translational medicine (04-05-2016)“…Niemann-Pick disease type C (NPC) is a fatal, neurodegenerative, cholesterol storage disorder. With new therapeutics in clinical trials, it is imperative to…”
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