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Drzymała-Czyż S, Krzyżanowska-Jankowska P, Dziedzic K, Lisowska A, Kurek S, Goździk-Spychalska J, Kononets V, Woźniak D, Mądry E, Walkowiak J. Severe Genotype, Pancreatic Insufficiency and Low Dose of Pancreatic Enzymes Associate with Abnormal Serum Sterol Profile in Cystic Fibrosis. Biomolecules 2021; 11:313. [PMID: 33669566 PMCID: PMC7922133 DOI: 10.3390/biom11020313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Several factors could lead to lipid disturbances observed in cystic fibrosis (CF). This study aimed to assess sterol homeostasis in CF and define potential exogenous and endogenous determinants of lipid dysregulation. METHODS The study involved 55 CF patients and 45 healthy subjects (HS). Sterol concentrations (μg/dL) were measured by gas chromatography/mass spectrometry. CF was characterised by lung function, pancreatic status, liver disease and diabetes coexistence, Pseudomonas aeruginosa colonisation and BMI. CFTR genotypes were classified as severe or other. RESULTS Campesterol and β-sitosterol concentrations were lower (p = 0.0028 and p < 0.0001, respectively) and lathosterol levels (reflecting endogenous cholesterol biosynthesis) were higher (p = 0.0016) in CF patients than in HS. Campesterol and β-sitosterol concentrations were lower in patients with a severe CFTR genotype, pancreatic insufficiency and lower pancreatic enzyme dose (lipase units/gram of fat). In multiple regression analyses, β-sitosterol and campesterol concentrations were predicted by genotype and pancreatic insufficiency, whereas cholesterol and its fractions were predicted by phytosterol concentrations, age, dose of pancreatic enzymes, nutritional status and genotype. CONCLUSIONS Independent determinants of lipid status suggest that malabsorption and pancreatic enzyme supplementation play a significant role in sterol abnormalities. The measurement of campesterol and β-sitosterol concentrations in CF patients may serve for the assessment of the effectiveness of pancreatic enzyme replacement therapy and/or compliance, but further research is required.
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Affiliation(s)
- Sławomira Drzymała-Czyż
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
- Department of Bromatology, Poznan University of Medical Sciences, 60-354 Poznań, Poland;
| | - Patrycja Krzyżanowska-Jankowska
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
| | - Krzysztof Dziedzic
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
- Department of Food Science and Nutrition, Institute of Food Technology of Plant Origin, Poznań University of Life Sciences, 60-637 Poznań, Poland
| | - Aleksandra Lisowska
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
| | - Szymon Kurek
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
| | - Joanna Goździk-Spychalska
- Department of Pulmonology, Allergology and Respiratory Oncology, Poznan University of Medical Sciences, 60-569 Poznań, Poland;
| | - Victoria Kononets
- Department of Natural Sciences Disciplines, West Kazakhstan Marat Ospanov Medical University, Aktobe 030012, Kazakhstan;
| | - Dagmara Woźniak
- Department of Bromatology, Poznan University of Medical Sciences, 60-354 Poznań, Poland;
| | - Edyta Mądry
- Department of Physiology, Poznan University of Medical Sciences, 61-781 Poznań, Poland;
| | - Jarosław Walkowiak
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 60-572 Poznań, Poland; (P.K.-J.); (K.D.); (A.L.); (S.K.); (J.W.)
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Barnaby R, Koeppen K, Stanton BA. Cyclodextrins reduce the ability of Pseudomonas aeruginosa outer-membrane vesicles to reduce CFTR Cl - secretion. Am J Physiol Lung Cell Mol Physiol 2018; 316:L206-L215. [PMID: 30358440 DOI: 10.1152/ajplung.00316.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Pseudomonas aeruginosa secretes outer-membrane vesicles (OMVs) that fuse with cholesterol-rich lipid rafts in the apical membrane of airway epithelial cells and decrease wt-CFTR Cl- secretion. Herein, we tested the hypothesis that a reduction of the cholesterol content of CF human airway epithelial cells by cyclodextrins reduces the inhibitory effect of OMVs on VX-809 (lumacaftor)-stimulated Phe508del CFTR Cl- secretion. Primary CF bronchial epithelial cells and CFBE cells were treated with vehicle, hydroxypropyl-β-cyclodextrin (HPβCD), or methyl-β-cyclodextrin (MβCD), and the effects of OMVs secreted by P. aeruginosa on VX-809 stimulated Phe508del CFTR Cl- secretion were measured in Ussing chambers. Neither HPβCD nor MβCD were cytotoxic, and neither altered Phe508del CFTR Cl- secretion. Both cyclodextrins reduced OMV inhibition of VX-809-stimulated Phe508del-CFTR Cl- secretion when added to the apical side of CF monolayers. Both cyclodextrins also reduced the ability of P. aeruginosa to form biofilms and suppressed planktonic growth of P. aeruginosa. Our data suggest that HPβCD, which is in clinical trials for Niemann-Pick Type C disease, and MβCD, which has been approved by the U.S. Food and Drug Administration for use in solubilizing lipophilic drugs, may enhance the clinical efficacy of VX-809 in CF patients when added to the apical side of airway epithelial cells, and reduce planktonic growth and biofilm formation by P. aeruginosa. Both effects would be beneficial to CF patients.
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Affiliation(s)
- Roxanna Barnaby
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| | - Katja Koeppen
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
| | - Bruce A Stanton
- Department of Microbiology and Immunology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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Zhang M, Li L, Fang D, Kelley TJ, Burgess JD. Single Cell Titration-Type Assay for Plasma Membrane Cholesterol Chemical Potential. Anal Chem 2018; 90:5903-5908. [PMID: 29658264 DOI: 10.1021/acs.analchem.8b00736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, a titration-type assay is described that determines the minimum concentration of cholesterol in solution that is required to drive net influx of cholesterol to the plasma membrane and thus increase the cholesterol concentration. The increase in cholesterol in the plasma membrane is detected by cholesterol diffusion at the site of contact by a cholesterol oxidase-modified microelectrode. In the presented thermodynamic model, the minimum solution phase cholesterol concentration that drives influx to the plasma membrane is a close approximation of the true solution-phase equilibrium concentration of cholesterol produced from cellular cholesterol efflux and as such it is a quantitative measure of the chemical potential of cholesterol in the cellular plasma membrane. This assay provides a measure of cholesterol chemical potential in the living cellular plasma membrane through reference to a solution concentration which avoids invoking classic kinetic theory to relate a rate to a specific thermodynamic activity and which avoids uncertainty associated with mass transfer phenomena.
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Affiliation(s)
- Meiling Zhang
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine , Nanjing Medical University , Nanjing , Jiangsu China , 211126
| | - Linyu Li
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine , Nanjing Medical University , Nanjing , Jiangsu China , 211126
| | - Danjun Fang
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine , Nanjing Medical University , Nanjing , Jiangsu China , 211126
| | - Thomas J Kelley
- Departments of Pediatrics , Case Western Reserve University , Cleveland , Ohio 44106 , United States
| | - James D Burgess
- Department of Medical Laboratory, Imaging, and Radiologic Sciences, College of Allied Health Sciences , Augusta University and Augusta University Health System , Augusta , Georgia 30912 , United States
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Santoro A, Ciaglia E, Nicolin V, Pescatore A, Prota L, Capunzo M, Ursini MV, Nori SL, Bifulco M. The isoprenoid end product N6-isopentenyladenosine reduces inflammatory response through the inhibition of the NFκB and STAT3 pathways in cystic fibrosis cells. Inflamm Res 2017; 67:315-326. [PMID: 29230506 PMCID: PMC5843674 DOI: 10.1007/s00011-017-1123-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 12/03/2017] [Accepted: 12/06/2017] [Indexed: 12/26/2022] Open
Abstract
Objective N6-isopentenyladenosine (iPA) is an intermediate of the mevalonate pathway that exhibits various anti-cancer effects. However, studies on its anti-inflammatory activity are scarce and underlying molecular mechanisms are unknown. Therefore, we aimed to investigate the ability of iPA to exert anti-inflammatory effects in the human cystic fibrosis (CF) cell model of exacerbated inflammation. Materials and methods TNFα-stimulated CF cells CuFi-1 and its normal counterpart NuLi-1 were pre-treated with increasing concentrations of iPA and cell viability and proliferation were assessed by MTT and BrdU assays. The effect of iPA on IL-8 and RANTES secretion was determined by ELISA, and the activation and expression of signaling molecules and selenoproteins were studied by Western blot. To assess the direct effect of iPA on NFκB activity, luciferase assay was performed on TNFα-stimulated HEK293/T cells transfected with a NFκB reporter plasmid. Results We demonstrated for the first time that iPA prevents IL-8 and RANTES release in TNFα-stimulated CF cells and this effect is mediated by increasing the expression of the direct NFκB inhibitor IκBα and decreasing the levels of STAT3. Consistent with this, we showed that iPA inhibited TNFα-mediated NFκB activation in HEK/293T cells. Finally, we also found that iPA improved the levels of glutathione peroxidase 1 and thioredoxin reductase 1 only in CF cells suggesting its ability to maintain sufficient expression of these anti-oxidant selenoproteins. Conclusions Our findings indicate that iPA can exert anti-inflammatory activity especially in the cases of excessive inflammatory response as in CF.
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Affiliation(s)
- Antonietta Santoro
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy
| | - Elena Ciaglia
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy
| | - Vanessa Nicolin
- Clinical Department of Medical, Surgical and Health Science, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
| | - Alessandra Pescatore
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso" CNR, Via P. Castellino, 80131, Naples, Italy
| | - Lucia Prota
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy
| | - Mario Capunzo
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy
| | - Matilde V Ursini
- Institute of Genetics and Biophysics "Adriano Buzzati-Traverso" CNR, Via P. Castellino, 80131, Naples, Italy
| | - Stefania L Nori
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy.
| | - Maurizio Bifulco
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana" University of Salerno, Via S. Allende, 84081, Baronissi, Salerno, Italy. .,Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II", Via Pansini, 80131, Naples, Italy.
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Ernst WL, Shome K, Wu CC, Gong X, Frizzell RA, Aridor M. VAMP-associated Proteins (VAP) as Receptors That Couple Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Proteostasis with Lipid Homeostasis. J Biol Chem 2016; 291:5206-20. [PMID: 26740627 DOI: 10.1074/jbc.m115.692749] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Indexed: 12/27/2022] Open
Abstract
Unesterified cholesterol accumulates in late endosomes in cells expressing the misfolded cystic fibrosis transmembrane conductance regulator (CFTR). CFTR misfolding in the endoplasmic reticulum (ER) or general activation of ER stress led to dynein-mediated clustering of cholesterol-loaded late endosomes at the Golgi region, a process regulated by ER-localized VAMP-associated proteins (VAPs). We hypothesized that VAPs serve as intracellular receptors that couple lipid homeostasis through interactions with two phenylalanines in an acidic track (FFAT) binding signals (found in lipid sorting and sensing proteins, LSS) with proteostasis regulation. VAPB inhibited the degradation of ΔF508-CFTR. The activity was mapped to the ligand-binding major sperm protein (MSP) domain, which was sufficient in regulating CFTR biogenesis. We identified mutations in an unstructured loop within the MSP that uncoupled VAPB-regulated CFTR biogenesis from basic interactions with FFAT. Using this information, we defined functional and physical interactions between VAPB and proteostasis regulators (ligands), including the unfolded protein response sensor ATF6 and the ER degradation cluster that included FAF1, VCP, BAP31, and Derlin-1. VAPB inhibited the degradation of ΔF508-CFTR in the ER through interactions with the RMA1-Derlin-BAP31-VCP pathway. Analysis of pseudoligands containing tandem FFAT signals supports a competitive model for VAP interactions that direct CFTR biogenesis. The results suggest a model in which VAP-ligand binding couples proteostasis and lipid homeostasis leading to observed phenotypes of lipid abnormalities in protein folding diseases.
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Affiliation(s)
- Wayne L Ernst
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
| | - Kuntala Shome
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
| | - Christine C Wu
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
| | - Xiaoyan Gong
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
| | - Raymond A Frizzell
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
| | - Meir Aridor
- From the Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261
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Castro-Torres IG, De la O-Arciniega M, Bravo-Duarte GA, Gallegos-Estudillo J, Domínguez-Ortíz MÁ, Martínez-Vázquez M. Intestinal and hepatic Niemann–Pick C1L1 proteins: Future therapeutic targets for cholesterol gallstones disease? Eur J Pharmacol 2014; 728:77-81. [DOI: 10.1016/j.ejphar.2014.01.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 01/13/2014] [Accepted: 01/24/2014] [Indexed: 02/07/2023]
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Cianciola NL, Greene DJ, Morton RE, Carlin CR. Adenovirus RIDα uncovers a novel pathway requiring ORP1L for lipid droplet formation independent of NPC1. Mol Biol Cell 2013; 24:3309-25. [PMID: 24025716 PMCID: PMC3814149 DOI: 10.1091/mbc.e12-10-0760] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Expression of the adenovirus protein RIDα rescues the cholesterol storage phenotype in NPC1-deficient cells by inducing formation of lipid droplets. The function of RIDα is independent of NPC1 but dependent on NPC2 and the oxysterol-binding protein ORP1L. This study provides the first evidence that ORP1L plays a role in sterol transport and LD formation. Niemann–Pick disease type C (NPC) is caused by mutations in NPC1 or NPC2, which coordinate egress of low-density-lipoprotein (LDL)-cholesterol from late endosomes. We previously reported that the adenovirus-encoded protein RIDα rescues the cholesterol storage phenotype in NPC1-mutant fibroblasts. We show here that RIDα reconstitutes deficient endosome-to-endoplasmic reticulum (ER) transport, allowing excess LDL-cholesterol to be esterified by acyl-CoA:cholesterol acyltransferase and stored in lipid droplets (LDs) in NPC1-deficient cells. Furthermore, the RIDα pathway is regulated by the oxysterol-binding protein ORP1L. Studies have classified ORP1L as a sterol sensor involved in LE positioning downstream of GTP-Rab7. Our data, however, suggest that ORP1L may play a role in transport of LDL-cholesterol to a specific ER pool designated for LD formation. In contrast to NPC1, which is dispensable, the RIDα/ORP1L-dependent route requires functional NPC2. Although NPC1/NPC2 constitutes the major pathway, therapies that amplify minor egress routes for LDL-cholesterol could significantly improve clinical management of patients with loss-of-function NPC1 mutations. The molecular identity of putative alternative pathways, however, is poorly characterized. We propose RIDα as a model system for understanding physiological egress routes that use ORP1L to activate ER feedback responses involved in LD formation.
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Affiliation(s)
- Nicholas L Cianciola
- Department of Molecular Biology and Microbiology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106 Department of Cell Biology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195 Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
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Increased Expression of RhoA in Epithelium and Smooth Muscle of Obese Mouse Models: Implications for Isoprenoid Control of Airway Smooth Muscle and Fibroblasts. J Allergy (Cairo) 2013; 2013:740973. [PMID: 23840226 PMCID: PMC3693156 DOI: 10.1155/2013/740973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 04/22/2013] [Accepted: 05/21/2013] [Indexed: 01/16/2023] Open
Abstract
The simultaneous rise in the prevalence of asthma and obesity has prompted epidemiologic studies that establish obesity as a risk factor for asthma. The alterations in cell signaling that explain this link are not well understood and warrant investigation so that therapies that target this asthma phenotype can be developed. We identified a significant increase in expression of the small GTPase RhoA in nasal epithelial cells and tracheal smooth muscle cells from leptin-deficient (ob/ob) mice compared to their wild-type counterparts. Since RhoA function is dependent on isoprenoid modification, we sought to determine the role of isoprenoid-mediated signaling in regulating the viability and proliferation of human airway smooth muscle cells (ASM) and normal human lung fibroblasts (NHLF). Inhibiting isoprenoid signaling with mevastatin significantly decreased the viability of ASM and NHLF. This inhibition was reversed by geranylgeranyl pyrophosphate (GGPP), but not farnesyl pyrophosphate (FPP), suggesting specificity to the Rho GTPases. Conversely, increasing isoprenoid synthesis significantly increased ASM proliferation and RhoA protein expression. RhoA expression is inherently increased in airway tissue from ob/ob mice, and obesity-entrained alterations in this pathway may make it a novel therapeutic target for treating airway disease in the obese population.
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Kitatani T, Takahashi S, Ikenoya S. [Pharmacological and clinical profiles of miglustat (Brazaves(®)) for the treatment of Niemann-Pick type C disease]. Nihon Yakurigaku Zasshi 2013; 141:160-167. [PMID: 23470482 DOI: 10.1254/fpj.141.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Proteome-wide mapping of cholesterol-interacting proteins in mammalian cells. Nat Methods 2013; 10:259-64. [PMID: 23396283 PMCID: PMC3601559 DOI: 10.1038/nmeth.2368] [Citation(s) in RCA: 310] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 01/07/2013] [Indexed: 12/11/2022]
Abstract
Cholesterol is an essential structural component of cellular membranes and serves as a precursor for several classes of signaling molecules. Cholesterol exerts its effects and is, itself, regulated in large part by engaging in specific interactions with proteins. The full complement of sterol-binding proteins that exist in mammalian cells, however, remains unknown. Here, we describe a chemoproteomic strategy that uses clickable, photoreactive sterol probes in combination with quantitative mass spectrometry to globally map cholesterol-protein interactions directly in living cells. We identified over 250 cholesterol-binding proteins, including many established and previously unreported interactions with receptors, channels, and enzymes. Prominent among the newly identified interactions were enzymes that regulate sugars, glycerolipids, and cholesterol itself, as well as those involved in vesicular transport and protein glycosylation and degradation, pointing to key nodes in biochemical pathways that may couple sterol concentrations to the control of other metabolites and protein localization and modification.
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