1
|
Jubinville É, Routhier J, Maranda-Robitaille M, Pineault M, Milad N, Talbot M, Beaulieu MJ, Aubin S, Paré MÈ, Laplante M, Morissette MC. Pharmacological activation of liver X receptor during cigarette smoke exposure adversely affects alveolar macrophages and pulmonary surfactant homeostasis. Am J Physiol Lung Cell Mol Physiol 2019; 316:L669-L678. [PMID: 30702343 DOI: 10.1152/ajplung.00482.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Smoking alters pulmonary reverse lipid transport and leads to intracellular lipid accumulation in alveolar macrophages. We investigated whether stimulating reverse lipid transport with an agonist of the liver X receptor (LXR) would help alveolar macrophages limit lipid accumulation and dampen lung inflammation in response to cigarette smoke. Mice were exposed to cigarette smoke and treated intraperitoneally with the LXR agonist T0901317. Expression of lipid capture and lipid export genes was assessed in lung tissue and alveolar macrophages. Pulmonary inflammation was assessed in the bronchoalveolar lavage (BAL). Finally, cholesterol efflux capacity and pulmonary surfactant levels were determined. In room air-exposed mice, T0901317 increased the expression of lipid export genes in macrophages and the whole lung and increased cholesterol efflux capacity without inducing inflammation or affecting the pulmonary surfactant. However, cigarette smoke-exposed mice treated with T0901317 showed a marked increase in BAL neutrophils, IL-1α, C-C motif chemokine ligand 2, and granulocyte-colony-stimulating factor levels. T0901317 treatment in cigarette smoke-exposed mice failed to increase the ability of alveolar macrophages to export cholesterol and markedly exacerbated IL-1α release. Finally, T0901317 led to pulmonary surfactant depletion only in cigarette smoke-exposed mice. This study shows that hyperactivation of LXR and the associated lipid capture/export mechanisms only have minor pulmonary effects on the normal lung. However, in the context of cigarette smoke exposure, where the pulmonary surfactant is constantly oxidized, hyperactivation of LXR has dramatic adverse effects, once again showing the central role of lipid homeostasis in the pulmonary response to cigarette smoke exposure.
Collapse
Affiliation(s)
- Éric Jubinville
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Joanie Routhier
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | | | - Marie Pineault
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Nadia Milad
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Maude Talbot
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Marie-Josée Beaulieu
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Sophie Aubin
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Marie-Ève Paré
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Mathieu Laplante
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
- Department of Medicine, Université Laval , Quebec City, Quebec , Canada
- Centre de Recherche sur le Cancer de l'Université Laval, Quebec City, Quebec, Canada
| | - Mathieu C Morissette
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
- Department of Medicine, Université Laval , Quebec City, Quebec , Canada
| |
Collapse
|
2
|
Sun Y, Kopp S, Strutz J, Gali CC, Zandl-Lang M, Fanaee-Danesh E, Kirsch A, Cvitic S, Frank S, Saffery R, Björkhem I, Desoye G, Wadsack C, Panzenboeck U. Gestational diabetes mellitus modulates cholesterol homeostasis in human fetoplacental endothelium. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:968-979. [PMID: 29778664 DOI: 10.1016/j.bbalip.2018.05.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 05/07/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023]
Abstract
Gestational diabetes mellitus (GDM) is associated with excessive oxidative stress which may affect placental vascular function. Cholesterol homeostasis is crucial for maintaining fetoplacental endothelial function. We aimed to investigate whether and how GDM affects cholesterol metabolism in human fetoplacental endothelial cells (HPEC). HPEC were isolated from fetal term placental arterial vessels of GDM or control subjects. Cellular reactive oxygen species (ROS) were detected by H2DCFDA fluorescent dye. Oxysterols were quantified by gas chromatography-mass spectrometry analysis. Genes and proteins involved in cholesterol homeostasis were detected by real-time PCR and immunoblotting, respectively. Cholesterol efflux was determined from [3H]-cholesterol labeled HPEC and [14C]-acetate was used as cholesterol precursor to measure cholesterol biosynthesis and esterification. We detected enhanced formation of ROS and of specific, ROS-derived oxysterols in HPEC isolated from GDM versus control pregnancies. ROS-generated oxysterols were simultaneously elevated in cord blood of GDM neonates. Liver-X receptor activation in control HPEC by synthetic agonist TO901319, 7-ketocholesterol, or 7β-hydroxycholesterol upregulated ATP-binding cassette transporters (ABC)A1 and ABCG1 expression, accompanied by increased cellular cholesterol efflux. Upregulation of ABCA1 and ABCG1 and increased cholesterol release to apoA-I and HDL3 (78 ± 17%, 40 ± 9%, respectively) were also observed in GDM versus control HPEC. The LXR antagonist GGPP reversed ABCA1 and ABCG1 upregulation and reduced the increased cholesterol efflux in GDM HPEC. Similar total cellular cholesterol levels were detected in control and GDM HPEC, while GDM enhanced cholesterol biosynthesis along with upregulated 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) and sterol O-acyltransferase 1 (SOAT1) mRNA and protein levels. Our results suggest that in GDM cellular cholesterol homeostasis in the fetoplacental endothelium is modulated via LXR activation and helps to maintain its proper functionality.
Collapse
Affiliation(s)
- Yidan Sun
- Immunology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Susanne Kopp
- Department of Obstetrics and Gynecology, Medical University of Graz, Austria
| | - Jasmin Strutz
- Department of Obstetrics and Gynecology, Medical University of Graz, Austria
| | - Chaitanya Chakravarthi Gali
- Immunology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Martina Zandl-Lang
- Immunology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Elham Fanaee-Danesh
- Immunology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Andrijana Kirsch
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Silvija Cvitic
- Department of Obstetrics and Gynecology, Medical University of Graz, Austria
| | - Saša Frank
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Richard Saffery
- Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Australia; University of Melbourne, Department of Pediatrics, Melbourne, Australia
| | - Ingemar Björkhem
- Division of Clinical Chemistry, Karolinska Institute, Huddinge University Hospital, Sweden
| | - Gernot Desoye
- Department of Obstetrics and Gynecology, Medical University of Graz, Austria
| | - Christian Wadsack
- Department of Obstetrics and Gynecology, Medical University of Graz, Austria; BioTechMed-Graz, Graz, Austria.
| | - Ute Panzenboeck
- Immunology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria.
| |
Collapse
|
4
|
Bultel S, Helin L, Clavey V, Chinetti-Gbaguidi G, Rigamonti E, Colin M, Fruchart JC, Staels B, Lestavel S. Liver X Receptor Activation Induces the Uptake of Cholesteryl Esters From High Density Lipoproteins in Primary Human Macrophages. Arterioscler Thromb Vasc Biol 2008; 28:2288-95. [DOI: 10.1161/atvbaha.108.175042] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
Liver X receptors (LXRs) are oxysterol-activated nuclear receptors regulating reverse cholesterol transport, in part by modulating cholesterol efflux from macrophages to apoAI and HDL via the ABCA1 and ABCG1/ABCG4 pathways. Moreover, LXR activation increases intracellular cholesterol trafficking via the induction of NPC1 and NPC2 expression. However, implication of LXRs in the selective uptake of cholesteryl esters from lipoproteins in human macrophages has never been reported.
Methods and Results—
Our results show that (1) selective CE uptake from HDL
3
is highly efficient in human monocyte-derived macrophages; (2) surprisingly, HDL
3
-CE uptake is strongly increased by LXR activation despite antiatherogenic effects of LXRs; (3) HDL
3
-CE uptake increase is not linked to SR-BI expression modulation but it is dependent of proteoglycan interactions; (4) HDL
3
-CE uptake increase is associated with increased expression and secretion of apoE and LPL, two proteins interacting with proteoglycans; (5) HDL
3
-CE uptake increase depends on the integrity of raft domains and is associated with an increased caveolin-1 expression.
Conclusions—
Our study identifies a new role for LXRs in the control of cholesterol homeostasis in human macrophages. LXR activation results in enhanced dynamic intracellular cholesterol fluxes through an increased CE uptake from HDL and leads to an increased cholesterol availability to efflux to apoAI and HDL.
Collapse
Affiliation(s)
- Stephanie Bultel
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Lionel Helin
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Veronique Clavey
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Giulia Chinetti-Gbaguidi
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Elena Rigamonti
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Morvane Colin
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Jean-Charles Fruchart
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Bart Staels
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| | - Sophie Lestavel
- From the Institut Pasteur de Lille, Inserm, U545, and Université de Lille 2, Faculté de Pharmacie et de Médecine Lille (S.B., L.H., V.C., G.C.-G., E.R., J.-C.F., B.S., S.L.), France; and Inserm, U837 Centre de Recherche Jean-Pierre Aubert, Université de Lille 2, Faculté de Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique (M.C.), Place de Verdun Lille, France
| |
Collapse
|
6
|
Stein O, Dabach Y, Ben-Naim M, Halperin G, Stein Y. Lower macrophage recruitment and atherosclerosis resistance in FVB mice. Atherosclerosis 2006; 189:336-41. [PMID: 16494884 DOI: 10.1016/j.atherosclerosis.2006.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2005] [Revised: 01/17/2006] [Accepted: 01/19/2006] [Indexed: 12/13/2022]
Abstract
The aim of this study was to compare some aspects of cholesterol accretion and cholesterol efflux in cellular components of the aortic wall derived from mice resistant or susceptible to atherosclerosis, FVB or C57BL, respectively. Cholesterol efflux, from cholesterol loaded smooth muscle cells or elicited macrophages, to apo A-I or HDL was similar in the two strains under basal conditions, and after cAMP or LXR upregulation. Recruitment of peritoneal macrophages, 3 days after thioglycollate injection, was 65% lower in FVB than in C57BL mice, commensurate with a 40% reduction in MCP-1 in peritoneal lavage. In additional three atherosclerosis resistant strains, NZB, A/J and 129(SvJ), macrophage recruitment was reduced to a similar extent despite high MCP-1 levels. Since impaired macrophage recruitment in CCR2(-/-) or MCP-1(-/-) C57BL mice was reported to reduce atherosclerosis, it seems plausible that in some mouse strains reduction in macrophage mobilization could contribute to atherosclerosis resistance.
Collapse
MESH Headings
- Animals
- Aorta, Thoracic/metabolism
- Aorta, Thoracic/pathology
- Atherosclerosis/metabolism
- Atherosclerosis/pathology
- Chemokine CCL2/metabolism
- Cholesterol/metabolism
- Disease Models, Animal
- Disease Progression
- Macrophages, Peritoneal/metabolism
- Macrophages, Peritoneal/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C3H
- Mice, Inbred C57BL
- Mice, Inbred NZB
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Phospholipids/metabolism
Collapse
Affiliation(s)
- Olga Stein
- Department of Experimental Medicine and Cancer Research, Hebrew University, Hadassah Medical School, Jerusalem 91120, Israel
| | | | | | | | | |
Collapse
|