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" within Papeles
Shinji Kamisuki et al.
Journal of medicinal chemistry, 54(13), 4923-4927 (2011-05-13)
Fatostatin, a recently discovered small molecule that inhibits activation of sterol regulatory element-binding protein (SREBP), blocks biosynthesis and accumulation of fat in obese mice. We synthesized and evaluated a series of fatostatin derivatives. Our structure-activity relationships led to the identification
Marina Parra-Robert et al.
Biomolecules, 9(9) (2019-09-01)
Nonalcoholic fatty liver disease (NAFLD) is characterized by hepatic accumulation of lipids. Antisteatotic effects of cerium oxide nanoparticles (CeO2NPs) have recently been shown in animal models of liver disease. However, it is unclear whether the activity of CeO2NPs is related
Hiroshi Takahashi et al.
Chemistry and physics of lipids, 227, 104872-104872 (2020-01-14)
The effects of 7β-hydroxycholesterol (7βOH) and 25-hydroxycholesterol (25OH) on the phase behavior and the structural properties of the multilamellar vesicles of dipalmitoylphosphatidylcholine (DPPC) bilayers were investigated with comparing to the effects of cholesterol (Chol). Differential scanning calorimetry (DSC) measurements showed
Annukka M Kivelä et al.
Atherosclerosis, 225(2), 335-340 (2012-10-30)
Endothelial lipase (EL) regulates HDL cholesterol levels and in inflammatory states, like atherosclerosis, EL expression is increased contributing to low HDL cholesterol. The regulation of EL expression is poorly understood and has mainly been attributed to inflammatory stimuli. As sterol
Li Chen et al.
Biochemical and biophysical research communications, 484(4), 857-863 (2017-02-09)
25-hydroxycholesterol (25-HC) is enzymatically produced by cholesterol 25-hydorxylase in various organs and is involved in many processes, including lipid metabolism, inflammation and the immune response. However, the role of 25-HC in the migration and invasion of lung adenocarcinoma (ADC) cells
Gregory Segala et al.
Nature communications, 8(1), 1903-1903 (2017-12-05)
Dendrogenin A (DDA) is a newly discovered cholesterol metabolite with tumor suppressor properties. Here, we explored its efficacy and mechanism of cell death in melanoma and acute myeloid leukemia (AML). We found that DDA induced lethal autophagy in vitro and
J Zhang et al.
Arzneimittel-Forschung, 62(6), 301-306 (2012-05-18)
Triptolide(CAS 38748-32-2), a major active component of Tripterygium wilfordii Hook F (TWHF), is known to have multiple pharmacological activities. However, studies have also shown that triptolide is highly disrupt to the reproductive system by disrupting normal steroid hormone signaling. In
Takashi Sugiyama et al.
iScience, 24(7), 102758-102758 (2021-08-07)
Derlin family members (Derlins) are primarily known as components of the endoplasmic reticulum-associated degradation pathway that eliminates misfolded proteins. Here we report a function of Derlins in the brain development. Deletion of Derlin-1 or Derlin-2 in the central nervous system
Xingzhe Ma et al.
The Journal of experimental medicine, 215(6), 1555-1569 (2018-05-11)
CD8+ T cells can be polarized into IL-9-secreting (Tc9) cells. We previously showed that adoptive therapy using tumor-specific Tc9 cells generated stronger antitumor responses in mouse melanoma than classical Tc1 cells. To understand why Tc9 cells exert stronger antitumor responses
Grace Ampem et al.
Cell and tissue research, 378(1), 81-96 (2019-04-24)
Self-renewal of macrophages is important for the healthy development and replenishment of tissue-resident macrophage pools. How this mechanism is controlled by endocrine signals is still largely unexplored. Here, we show that the endocrine disruptor bisphenol A (BPA) increases macrophage self-renewal.
Anna Simon
The New England journal of medicine, 371(20), 1933-1935 (2014-11-13)
A study in mice implicates a cholesterol derivative in damping down the inflammatory response mediated by interleukin-1β and explaining, at least in part, the immunosuppressive effect of type I interferon, which is used in the treatment of multiple sclerosis.
Ulf Diczfalusy
Biochimie, 95(3), 455-460 (2012-06-27)
The oxysterol 25-hydroxycholesterol is a widely used compound displaying an array of pharmacological actions in in vitro systems and cell based experimental systems. In spite of the frequent use of this compound over the last few decades and a large number
Hanne Roberg-Larsen et al.
The Journal of steroid biochemistry and molecular biology, 169, 22-28 (2016-02-16)
Exosomes from cancer cells are rich sources of biomarkers and may contain elevated levels of lipids of diagnostic value. 27-Hydroxycholesterol (27-OHC) is associated with proliferation and metastasis in estrogen receptor positive (ER+) breast cancer. In this study, we investigated the
Jian Xiao et al.
Protein & cell, 12(4), 279-296 (2020-07-16)
Sterol-regulatory element binding proteins (SREBPs) are the key transcriptional regulators of lipid metabolism. The activation of SREBP requires translocation of the SREBP precursor from the endoplasmic reticulum to the Golgi, where it is sequentially cleaved by site-1 protease (S1P) and
Daniel L Villeneuve et al.
Environmental toxicology and chemistry, 36(1), 231-242 (2016-06-18)
Triclocarban (TCC) is an antimicrobial agent routinely detected in surface waters that has been hypothesized to interact with the vertebrate endocrine system. The present study examined the effects of TCC alone and in combination with the model endocrine disruptor 17β-trenbolone
Khanichi N Charles et al.
Frontiers in cell and developmental biology, 8, 560266-560266 (2020-11-27)
Cholesterol biosynthesis is a multi-step process involving several subcellular compartments, including peroxisomes. Cells adjust their sterol content by both transcriptional and post-transcriptional feedback regulation, for which sterol regulatory element-binding proteins (SREBPs) are essential; such homeostasis is dysregulated in peroxisome-deficient Pex2
Marc M Schumacher et al.
eLife, 4 (2015-03-06)
Schnyder corneal dystrophy (SCD) is an autosomal dominant disorder in humans characterized by abnormal accumulation of cholesterol in the cornea. SCD-associated mutations have been identified in the gene encoding UBIAD1, a prenyltransferase that synthesizes vitamin K2. Here, we show that
Feng Wang et al.
Cardiovascular research, 93(1), 190-199 (2011-10-08)
In this study, the role of retinoic inducible gene I (RIG-I)-mediated signalling in the inflammation of atherosclerosis was investigated to explain the pathology of atherosclerosis. Human and mouse primary cells were exposed to 25-hydroxycholesterol followed by examination of gene expression
David R Bauman et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(39), 16764-16769 (2009-10-07)
25-Hydroxycholesterol is produced in mammalian tissues. The function of this oxysterol is unknown. Here we describe a central role for 25-hydroxycholesterol in regulating the immune system. In initial experiments, we found that stimulation of macrophage Toll-like receptors (TLR) induced expression
Su-Yang Liu et al.
Immunity, 38(1), 92-105 (2013-01-01)
Interferons (IFN) are essential antiviral cytokines that establish the cellular antiviral state through upregulation of hundreds of interferon-stimulated genes (ISGs), most of which have uncharacterized functions and mechanisms. We identified cholesterol-25-hydroxylase (CH25H) as a broadly antiviral ISG. CH25H converts cholesterol
Katrine Bjune et al.
Atherosclerosis, 276, 28-38 (2018-07-20)
Induction of low-density lipoprotein receptor (LDLR) plays a significant role in reduction of plasma LDL-cholesterol (LDL-C) levels. Therefore, strategies that enhance the protein level of LDLR provide an attractive therapeutic target for the treatment of hypercholesterolemia. With this aim in
Wenbin Zhong et al.
Experimental cell research, 322(2), 227-235 (2014-01-16)
We earlier identified OSBP-related protein 8 (ORP8) as an endoplasmic reticulum/nuclear envelope oxysterol-binding protein implicated in cellular lipid homeostasis, migration, and organization of the microtubule cytoskeleton. Here, a yeast two-hybrid screen identified Homo sapiens sperm associated antigen 5 (SPAG5)/Astrin as
Ciara M Gallagher et al.
eLife, 5 (2016-07-21)
The membrane-bound transcription factor ATF6α plays a cytoprotective role in the unfolded protein response (UPR), required for cells to survive ER stress. Activation of ATF6α promotes cell survival in cancer models. We used cell-based screens to discover and develop Ceapins
Hisatoshi Sugiura et al.
Respirology (Carlton, Vic.), 17(3), 533-540 (2012-02-03)
25-Hydroxycholesterol (25-HC) is produced from cholesterol by the enzyme cholesterol 25-hydroxylase and is associated with atherosclerosis of vessels. Recently, 25-HC was reported to cause inflammation in various types of tissues. The aim of this study was to assess the production
Samantha A Hutchinson et al.
Nutrients, 11(11) (2019-11-07)
Interventions that alter cholesterol have differential impacts on hormone receptor positive- and negative-breast cancer risk and prognosis. This implies differential regulation or response to cholesterol within different breast cancer subtypes. We evaluated differences in side-chain hydroxycholesterol and liver X nuclear
Akira Koarai et al.
Respiratory research, 13, 63-63 (2012-08-02)
25-hydroxycholesterol (25-HC) is one of the oxysterols, which are oxidized derivatives of cholesterol, and has been reported to be involved in the pathogenesis of atherosclerosis and Alzheimer's disease. In lung, the possible involvement of 25-HC in airway diseases has been
Patrizia Romani et al.
Nature cell biology, 21(3), 338-347 (2019-02-06)
Extracellular matrix (ECM) mechanical cues have powerful effects on cell proliferation, differentiation and death. Here, starting from an unbiased metabolomics approach, we identify synthesis of neutral lipids as a general response to mechanical signals delivered by cell-matrix adhesions. Extracellular physical
Monica de Gaetano et al.
Journal of inflammation (London, England), 12, 15-15 (2015-02-28)
Atherosclerosis, the underlying cause of heart attack and strokes, is a progresive dyslipidemic and inflammatory disease where monocyte-derived macrophage cells play a pivotal role. Although most of the mechanisms that contribute to the progression of atherosclerosis have been identified, there
Anita Wnętrzak et al.
The journal of physical chemistry. B, 124(6), 1104-1114 (2020-01-24)
In this study, 25-hydroxycholesterol (25-OH), a biamphiphilic compound with a wide range of biological activities, has been investigated at the air/water interface. We were interested in how two hydroxyl groups attached at distal positions of the 25-OH molecule (namely, at
Eva Bernhart et al.
Biochemical pharmacology, 96(2), 119-130 (2015-05-24)
Glioblastoma is the most common malignant brain tumor, which, despite combined radio- and chemotherapy, recurs and is invariably fatal for affected patients. Members of the sphingolipid (SL) family are potent effectors of glioma cell proliferation. In particular sphingosine-1-phosphate (S1P) and
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