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Nasr M, Fay A, Lupieri A, Malet N, Darmon A, Zahreddine R, Swiader A, Wahart A, Viaud J, Nègre-Salvayre A, Hirsch E, Monteyne D, Perez-Morgà D, Dupont N, Codogno P, Ramel D, Morel E, Laffargue M, Gayral S. PI3KCIIα-Dependent Autophagy Program Protects From Endothelial Dysfunction and Atherosclerosis in Response to Low Shear Stress in Mice. Arterioscler Thromb Vasc Biol 2024; 44:620-634. [PMID: 38152888 DOI: 10.1161/atvbaha.123.319978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 12/12/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND The ability to respond to mechanical forces is a basic requirement for maintaining endothelial cell (ECs) homeostasis, which is continuously subjected to low shear stress (LSS) and high shear stress (HSS). In arteries, LSS and HSS have a differential impact on EC autophagy processes. However, it is still unclear whether LSS and HSS differently tune unique autophagic machinery or trigger specific autophagic responses in ECs. METHODS Using fluid flow system to generate forces on EC and multiscale imaging analyses on ApoE-/- mice whole arteries, we studied the cellular and molecular mechanism involved in autophagic response to LSS or HSS on the endothelium. RESULTS We found that LSS and HSS trigger autophagy activation by mobilizing specific autophagic signaling modules. Indeed, LSS-induced autophagy in endothelium was independent of the class III PI3K (phosphoinositide 3-kinase) VPS34 (vacuolar sorting protein 34) but controlled by the α isoform of class II PI3K (phosphoinositide 3-kinase class II α [PI3KCIIα]). Accordingly, reduced PI3KCIIα expression in ApoE-/- mice (ApoE-/-PI3KCIIα+/-) led to EC dysfunctions associated with increased plaque deposition in the LSS regions. Mechanistically, we revealed that PI3KCIIα inhibits mTORC1 (mammalian target of rapamycin complex 1) activation and that rapamycin treatment in ApoE-/-PI3KCIIα+/- mice specifically rescue autophagy in arterial LSS regions. Finally, we demonstrated that absence of PI3KCIIα led to decreased endothelial primary cilium biogenesis in response to LSS and that ablation of primary cilium mimics PI3KCIIα-decreased expression in EC dysfunction, suggesting that this organelle could be the mechanosensor linking PI3KCIIα and EC homeostasis. CONCLUSIONS Our data reveal that mechanical forces variability within the arterial system determines EC autophagic response and supports a central role of PI3KCIIα/mTORC1 axis to prevent EC dysfunction in LSS regions.
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Affiliation(s)
- Mouin Nasr
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Alexis Fay
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Adrien Lupieri
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Nicole Malet
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Anne Darmon
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Rana Zahreddine
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Audrey Swiader
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Amandine Wahart
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Julien Viaud
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Anne Nègre-Salvayre
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Emilio Hirsch
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Turin, Italy (E.H.)
| | - Daniel Monteyne
- IBMM-DBM, Department of Molecular Parasitology, University of Brussels, Gosselies, Belgium (D.M., D.P.-M.)
| | - David Perez-Morgà
- IBMM-DBM, Department of Molecular Parasitology, University of Brussels, Gosselies, Belgium (D.M., D.P.-M.)
| | - Nicolas Dupont
- Institut Necker-Enfants Malades (INEM), INSERM U1151-CNRS UMR 8253, Université Paris Descartes-Sorbonne Paris Cité, France (N.D., P.C., E.M.)
| | - Patrice Codogno
- Institut Necker-Enfants Malades (INEM), INSERM U1151-CNRS UMR 8253, Université Paris Descartes-Sorbonne Paris Cité, France (N.D., P.C., E.M.)
| | - Damien Ramel
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Etienne Morel
- Institut Necker-Enfants Malades (INEM), INSERM U1151-CNRS UMR 8253, Université Paris Descartes-Sorbonne Paris Cité, France (N.D., P.C., E.M.)
| | - Muriel Laffargue
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
| | - Stephanie Gayral
- Institute of Metabolic and Cardiovascular Diseases (I2MC), Institut national de la Santé et de la Recherche (INSERM) 1297, University of Toulouse 3, France (M.N., A.F., A.L., N.M., A.D., R.Z., A.S., A.W., J.V., A.N.-S., D.R., M.L., S.G.)
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Grzesiak L, Amaya-Garrido A, Feuillet G, Malet N, Swiader A, Sarthou MK, Wahart A, Ramel D, Gayral S, Schanstra JP, Klein J, Laffargue M. Leucine-Rich Alpha-2 Glycoprotein 1 Accumulates in Complicated Atherosclerosis and Promotes Calcification. Int J Mol Sci 2023; 24:16537. [PMID: 38003727 PMCID: PMC10671851 DOI: 10.3390/ijms242216537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Atherosclerosis is the primary cause of cardiovascular disease. The development of plaque complications, such as calcification and neo-angiogenesis, strongly impacts plaque stability and is a good predictor of mortality in patients with atherosclerosis. Despite well-known risk factors of plaque complications, such as diabetes mellitus and chronic kidney disease, the mechanisms involved are not fully understood. We and others have identified that the concentration of circulating leucine-rich α-2 glycoprotein 1 (LRG1) was increased in diabetic and chronic kidney disease patients. Using apolipoprotein E knockout mice (ApoE-/-) (fed with Western diet) that developed advanced atherosclerosis and using human carotid endarterectomy, we showed that LRG1 accumulated into an atherosclerotic plaque, preferentially in calcified areas. We then investigated the possible origin of LRG1 and its functions on vascular cells and found that LRG1 expression was specifically enhanced in endothelial cells via inflammatory mediators and not in vascular smooth muscle cells (VSMC). Moreover, we identified that LRG1 was able to induce calcification and SMAD1/5-signaling pathways in VSMC. In conclusion, our results identified for the first time that LRG1 is a direct contributor to vascular calcification and suggest a role of this molecule in the development of plaque complications in patients with atherosclerosis.
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Affiliation(s)
- Lucile Grzesiak
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Ana Amaya-Garrido
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Guylène Feuillet
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Nicole Malet
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Audrey Swiader
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Marie-Kerguelen Sarthou
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Amandine Wahart
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Damien Ramel
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Stéphanie Gayral
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Joost Peter Schanstra
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Julie Klein
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
| | - Muriel Laffargue
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1297, Institute of Cardiovascular and Metabolic Disease, 31432 Toulouse, France
- Department of Biology, Université Toulouse III Paul-Sabatier, 31062 Toulouse, France
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Kang R, Laborde C, Savchenko L, Swiader A, Pizzinat N, Marsal D, Sainte-Marie Y, Boal F, Tronchere H, Roncalli J, Kunduzova O. Age-Related Shift in Cardiac and Metabolic Phenotyping Linked to Inflammatory Cytokines and Antioxidant Status in Mice. Int J Mol Sci 2023; 24:15841. [PMID: 37958823 PMCID: PMC10650425 DOI: 10.3390/ijms242115841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/18/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Age-related alterations in cardiac function, metabolic, inflammatory and antioxidant profiles are associated with an increased risk of cardiovascular mortality and morbidity. Here, we examined cardiac and metabolic phenotypes in relation to inflammatory status and antioxidant capacity in young, middle-aged and old mice. Real-time reverse transcription-polymerase chain reactions were performed on myocardium and immunoassays on plasma. Left ventricular (LV) structure and function were assessed by echocardiography using high-frequency ultrasound. Middle-aged mice exhibited an altered metabolic profile and antioxidant capacity compared to young mice, whereas myocardial expression of inflammatory factors (TNFα, IL1β, IL6 and IL10) remained unchanged. In contrast, old mice exhibited increased expression of inflammatory cytokines and plasma levels of resistin compared to young and middle-aged mice (p < 0.05). The pro-inflammatory signature of aged hearts was associated with alterations in glutathione redox homeostasis and elevated contents of 4-hydroxynonenal (4-HNE), a marker of lipid peroxidation and oxidative stress. Furthermore, echocardiographic parameters of LV systolic and diastolic functions were significantly altered in old mice compared to young mice. Taken together, these findings suggest age-related shifts in cardiac phenotype encompass the spectrum of metabo-inflammatory abnormalities and altered redox homeostasis.
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Affiliation(s)
- Ryeonshi Kang
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | | | - Lesia Savchenko
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
- Department of Internal Medicine, Poltava State Medical University, 23 Shevchenko, 36000 Poltava, Ukraine
| | - Audrey Swiader
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Nathalie Pizzinat
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Dimitri Marsal
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Yannis Sainte-Marie
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Frederic Boal
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Helene Tronchere
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
| | - Jerome Roncalli
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- Department of Cardiology, University Hospital of Toulouse, CEDEX 9, 31400 Toulouse, France
| | - Oksana Kunduzova
- National Institute of Health and Medical Research (INSERM) U1297, CEDEX 4, 31432 Toulouse, France; (R.K.); (L.S.); (A.S.); (N.P.); (D.M.); (Y.S.-M.); (F.B.); (H.T.); (J.R.)
- University of Toulouse III, CEDEX 9, 31062 Toulouse, France;
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Negre-Salvayre A, Swiader A, Salvayre R, Guerby P. Oxidative stress, lipid peroxidation and premature placental senescence in preeclampsia. Arch Biochem Biophys 2022; 730:109416. [PMID: 36179910 DOI: 10.1016/j.abb.2022.109416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022]
Abstract
Accelerated placental senescence is associated with preeclampsia (PE) and other pregnancy complications. It is characterized by an accelerated decline in placental function due to the accumulation of senescence patterns such as telomere shortening, mitochondrial dysfunction, oxidative damages, increased expression of phosphorylated (serine-139) histone γ-H2AX, a sensitive marker of double-stranded DNA breaks, accumulation of cross-linked ubiquitinated proteins and sirtuin inhibition. Among the lipid oxidation products generated by the peroxidation of polyunsaturated fatty acids, aldehydes such as acrolein, 4-hydroxy-2-nonenal, 4-oxo-2-nonenal, are present in the blood and placenta from PE-affected women and could contribute to PE pathogenesis and accelerated placental aging. In this review we summarize the current knowledge on premature placental senescence and the role of oxidative stress and lipid oxidation-derived aldehydes in this process, as well as their links with PE pathogenesis. The interest of developing (or not) new therapeutic strategies targeting lipid peroxidation is discussed, the objective being a better understanding of accelerated placental aging in PE pathophysiology, and the prevention of PE bad outcomes.
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Affiliation(s)
| | | | | | - Paul Guerby
- lnfinity, CNRS, Inserm UMR 1291, University Toulouse III and Gynecology/Obstetrics Department, Paule-de-Viguier Hospital, Toulouse, France
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Tasta O, Swiader A, Grazide MH, Rouahi M, Parant O, Vayssière C, Bujold E, Salvayre R, Guerby P, Negre-Salvayre A. A role for 4-hydroxy-2-nonenal in premature placental senescence in preeclampsia and intrauterine growth restriction. Free Radic Biol Med 2021; 164:303-314. [PMID: 33450376 DOI: 10.1016/j.freeradbiomed.2021.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 12/29/2022]
Abstract
Premature placental senescence is a hallmark of pregnancy-related disorders such as intrauterine growth restriction (IUGR) and preeclampsia (PE), two major cause of maternal and neonatal morbidity and mortality. Oxidative stress and lipid peroxidation are involved in the pathogenesis of PE and IUGR, and may play a role in placental aging. In this study, we investigated whether 4-hydroxy-2-nonenal (HNE), a lipid peroxidation-derived aldehyde present in preeclamptic placentas, may contribute to premature senescence in placenta-related complications. Placentas from PE-affected women, exhibited several senescence patterns, such as an increased expression of phosphorylated (serine-139) histone γH2AX, a sensitive marker of double-stranded DNA breaks, the presence of lipofuscin granules, and an accumulation of high molecular weight cross-linked and ubiquitinated proteins. PE placentas showed an accumulation of acetylated proteins consistent with the presence of HNE-adducts on sirtuin 1 (SIRT1). Likewise, oxidative stress and senescence markers together with SIRT1 modification by HNE, were observed in murine placentas from mice treated with lipopolysaccharide during gestation and used as models of IUGR. The addition of HNE and ONE (4-oxo-2-nonenal), to cultured HTR-8/SVneo human trophoblasts activated the senescence-associated- β-galactosidase, and generated an accumulation of acetylated proteins, consistent with a modification of SIRT1 by HNE. Altogether, these data emphasize the role of HNE and lipid peroxidation-derived aldehydes in premature placental senescence in PE and IUGR, and more generally in pathological pregnancies.
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Affiliation(s)
- Oriane Tasta
- Inserm U-1048, Université de Toulouse, France; Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | | | | | | | - Olivier Parant
- Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Christophe Vayssière
- Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Emmanuel Bujold
- Reproduction, Mother and Child Health Unit, CHU de Québec - Université Laval Research Centre, Québec, Canada
| | | | - Paul Guerby
- Inserm U-1048, Université de Toulouse, France; Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France; Reproduction, Mother and Child Health Unit, CHU de Québec - Université Laval Research Centre, Québec, Canada
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Guerby P, Tasta O, Swiader A, Pont F, Bujold E, Parant O, Vayssiere C, Salvayre R, Negre-Salvayre A. Role of oxidative stress in the dysfunction of the placental endothelial nitric oxide synthase in preeclampsia. Redox Biol 2021; 40:101861. [PMID: 33548859 PMCID: PMC7873691 DOI: 10.1016/j.redox.2021.101861] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/30/2020] [Accepted: 01/05/2021] [Indexed: 12/25/2022] Open
Abstract
Preeclampsia (PE) is a multifactorial pregnancy disease, characterized by new-onset gestational hypertension with (or without) proteinuria or end-organ failure, exclusively observed in humans. It is a leading cause of maternal morbidity affecting 3–7% of pregnant women worldwide. PE pathophysiology could result from abnormal placentation due to a defective trophoblastic invasion and an impaired remodeling of uterine spiral arteries, leading to a poor adaptation of utero-placental circulation. This would be associated with hypoxia/reoxygenation phenomena, oxygen gradient fluctuations, altered antioxidant capacity, oxidative stress, and reduced nitric oxide (NO) bioavailability. This results in part from the reaction of NO with the radical anion superoxide (O2•−), which produces peroxynitrite ONOO-, a powerful pro-oxidant and inflammatory agent. Another mechanism is the progressive inhibition of the placental endothelial nitric oxide synthase (eNOS) by oxidative stress, which results in eNOS uncoupling via several events such as a depletion of the eNOS substrate L-arginine due to increased arginase activity, an oxidation of the eNOS cofactor tetrahydrobiopterin (BH4), or eNOS post-translational modifications (for instance by S-glutathionylation). The uncoupling of eNOS triggers a switch of its activity from a NO-producing enzyme to a NADPH oxidase-like system generating O2•−, thereby potentiating ROS production and oxidative stress. Moreover, in PE placentas, eNOS could be post-translationally modified by lipid peroxidation-derived aldehydes such as 4-oxononenal (ONE) a highly bioreactive agent, able to inhibit eNOS activity and NO production. This review summarizes the dysfunction of placental eNOS evoked by oxidative stress and lipid peroxidation products, and the potential consequences on PE pathogenesis. Physiological ROS production is enhanced during pregnancy. eNOS is one of the main target of oxidative stress in PE placenta. eNOS is S-glutathionylated in PE placentas. eNOS is modified by lipid oxidation products in PE placentas.
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Affiliation(s)
- Paul Guerby
- Inserm U1048, Université de Toulouse, France; Gynecology and Obstetrics Department, Paule-de-Viguier Hospital, Toulouse University Hospital, France; Pôle Technologique du CRCT, Toulouse, France
| | - Oriane Tasta
- Inserm U1048, Université de Toulouse, France; Gynecology and Obstetrics Department, Paule-de-Viguier Hospital, Toulouse University Hospital, France
| | | | | | - Emmanuel Bujold
- Reproduction, Mother and Child Health Unit, CHU de Québec - Université Laval Research Centre, Université Laval, Québec, Canada
| | - Olivier Parant
- Gynecology and Obstetrics Department, Paule-de-Viguier Hospital, Toulouse University Hospital, France
| | - Christophe Vayssiere
- Gynecology and Obstetrics Department, Paule-de-Viguier Hospital, Toulouse University Hospital, France
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Guerby P, Swiader A, Tasta O, Pont F, Rodriguez F, Parant O, Vayssière C, Shibata T, Uchida K, Salvayre R, Negre-Salvayre A. Modification of endothelial nitric oxide synthase by 4-oxo-2(E)-nonenal(ONE) in preeclamptic placentas. Free Radic Biol Med 2019; 141:416-425. [PMID: 31323312 DOI: 10.1016/j.freeradbiomed.2019.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/09/2019] [Accepted: 07/15/2019] [Indexed: 01/21/2023]
Abstract
Preeclampsia (PE) is a leading cause of pregnancy complications, affecting 3-7% of pregnant women worldwide. The pathophysiology of preeclampsia involves a redox imbalance, oxidative stress and a reduced nitric oxide (NO) bioavailability. The molecular and cellular mechanisms leading to the dysfunction of the placental endothelial NO synthase (eNOS) are not clarified. This study was designed to investigate whether aldehydes generated by lipid peroxidation products (LPP), may contribute to placental eNOS dysfunction in PE. The analysis of placentas from PE-affected patients and normal pregnancies, showed a significant increase in protein carbonyl content, indicative of oxidative stress-induced protein modification, as shown by the accumulation of acrolein, 4-hydroxynonenal (HNE), and 4-oxo-2(E)-nonenal (ONE) adducts in PE placentas. In contrast, the levels of these LPP-adducts were low in placentas from normal pregnancies. Immunofluorescence and confocal experiments pointed out a colocalization of eNOS with ONE-Lys adducts, whereas eNOS was not modified in normal placentas. LC-MS/MS analysis of recombinant eNOS preincubated with ONE, allowed to identify several ONE-modified Lys-containing peptides, confirming that eNOS may undergo post-translational modification by LPP. The preincubation of HTR-8/SVneo human trophoblasts (HTR8) with ONE, resulted in ONE-Lys modification of eNOS and a reduced generation of NO. ONE inhibited the migration of HTR8 trophoblasts in the wound closure model, and this was partly restored by the NO donor, NOC-18, which confirmed the important role of NO in the invasive potential of trophoblasts. In conclusion, placental eNOS is modified by ONE in PE placentas, which emphasizes the sensitivity of this protein to oxidative stress in the disturbed redox environment of preeclamptic pregnancies.
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Affiliation(s)
- Paul Guerby
- Inserm U-1048, Université de Toulouse, France; Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | | | - Oriane Tasta
- Inserm U-1048, Université de Toulouse, France; Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | | | | | - Olivier Parant
- Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Christophe Vayssière
- Pôle de Gynécologie Obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Takahiro Shibata
- Graduate School of Bioagricultural Sciences, Nagoya University, Japan
| | - Koji Uchida
- Laboratory of Food Chemistry, University of Tokyo, Japan
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8
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Guerby P, Swiader A, Augé N, Parant O, Vayssière C, Uchida K, Salvayre R, Negre-Salvayre A. High glutathionylation of placental endothelial nitric oxide synthase in preeclampsia. Redox Biol 2019; 22:101126. [PMID: 30738311 PMCID: PMC6370867 DOI: 10.1016/j.redox.2019.101126] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 01/25/2019] [Indexed: 12/14/2022] Open
Abstract
Decreased nitric oxide (NO) bioavailability plays a critical role in the pathophysiology of preeclampsia (PE). Recent evidence indicates that S-glutathionylation may occur on the endothelial nitric oxide synthase (eNOS), leading to eNOS uncoupling, characterized by a decreased NO production and an increased generation of superoxide anion (O2•-). We hypothesized that eNOS glutathionylation may occur in PE placentas and participate in eNOS dysfunction. The glutathionylation of eNOS was investigated in thirteen PE-affected patients and in nine normal pregnancies. Immunofluorescence, confocal microscopy and western-blot experiments carried out on eNOS immunoprecipitates, revealed a high level of eNOS glutathionylation in PE placentas, mostly reversed by dithiotreitol (DTT), thus indicative of S-glutathionylation. In order to investigate whether eNOS glutathionylation may alter trophoblast migration, an important event occurring during early placentation, cultured HTR-8/SVneo human trophoblasts (HTR8) were exposed either to low pO2 (O2 1%) or to pO2 changes (O2 1-20%), in order to generate oxidative stress. Trophoblasts exposed to low pO2, did not undergo oxidative stress nor eNOS S-glutathionylation, and were able to generate NO and migrate in a wound closure model. In contrast, trophoblasts submitted to low/high pO2 changes, exhibited oxidative stress and a (DTT reversible) S-glutathionylation of eNOS, associated with reduced NO production and migration. The autonomous production of NO seemed necessary for the migratory potential of HTR8, as suggested by the inhibitory effect of eNOS silencing by small interfering RNAs, and the eNOS inhibitor L-NAME, in low pO2 conditions. Finally, the addition of the NO donor, NOC-18 (5 µM), restored in part the migration of HTR8, thereby emphasizing the role of NO in trophoblast homeostasis. In conclusion, the high level of eNOS S-glutathionylation in PE placentas provides new insights in the mechanism of eNOS dysfunction in this disease.
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Affiliation(s)
- Paul Guerby
- Inserm U-1048, Université de Toulouse, France; Pôle de gynécologie obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | | | | | - Olivier Parant
- Pôle de gynécologie obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Christophe Vayssière
- Pôle de gynécologie obstétrique, Hôpital Paule-de-Viguier, CHU de Toulouse, France
| | - Koji Uchida
- Laboratory of Food Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Japan
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9
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Lallemand T, Rouahi M, Swiader A, Grazide MH, Geoffre N, Alayrac P, Recazens E, Coste A, Salvayre R, Nègre-Salvayre A, Augé N. nSMase2 (Type 2-Neutral Sphingomyelinase) Deficiency or Inhibition by GW4869 Reduces Inflammation and Atherosclerosis in Apoe -/- Mice. Arterioscler Thromb Vasc Biol 2018; 38:1479-1492. [PMID: 29794115 PMCID: PMC6039418 DOI: 10.1161/atvbaha.118.311208] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 05/07/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Atherosclerosis is a chronic multifactorial and inflammatory disease of large and medium arteries and the leading cause of cardiovascular diseases worldwide. The aim of this study was to investigate whether and how the nSMase2 (type 2-neutral sphingomyelinase), a key enzyme of sphingolipid metabolism, may contribute to the development of atherosclerotic lesions. APPROACH AND RESULTS The role of nSMase2 in atherosclerosis was investigated in Apoe-/-;Smpd3fro/fro mice, mutant for nSMase2, and in Apoe-/-;Smpd3+/+ mice intraperitoneally injected with GW4869, a pharmacological nSMase2 inhibitor. The defect or inhibition of nSMase2 resulted in a reduction of atherosclerotic lesions and a decrease in macrophage infiltration and lipid deposition, although cholesterolemia remained unchanged. nSMase2 inhibition decreased the inflammatory response of murine endothelial cells to oxLDL (oxidized low-density lipoprotein), as assessed by the significant reduction of MCP-1 (monocyte chemoattractant protein 1), ICAM-1 (intercellular adhesion molecule-1), and VCAM-1 (vascular cell adhesion molecule-1) mRNA expressions and macrophage recruitment. Likewise, in RAW264.7 or in macrophages isolated from Apoe-/-/Smpd3fro/fro or Apoe-/-/Smpd3+/+ mice stimulated by lipopolysaccharides, nSMase2 inhibition resulted in a decrease in the expression of inflammatory molecules. Mechanistically, the anti-inflammatory response resulting from nSMase2 inhibition involves Nrf2 (nuclear factor [erythroid-derived 2]-like 2 or NF-E2-related factor-2) activation in both endothelial cells and macrophages, as assessed by the lack of protective effect of GW4869 in endothelial cells silenced for Nrf2 by small interfering RNAs, and in lipopolysaccharide-stimulated macrophages issued from Nrf2-KO mice. CONCLUSIONS The genetic deficiency or inhibition of nSMase2 strongly decreases the development of atherosclerotic lesions in Apoe-/- mice, by reducing inflammatory responses through a mechanism involving the Nrf2 pathway. Inhibitors of nSMase2 may, therefore, constitute a novel approach to slow down atherosclerosis progression.
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Affiliation(s)
- Tom Lallemand
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Myriam Rouahi
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Audrey Swiader
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Marie-Hélène Grazide
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Nancy Geoffre
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Paul Alayrac
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Emeline Recazens
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Agnès Coste
- PHARMA-DEV, IRD UMR 152, Toulouse, France (A.C.)
| | - Robert Salvayre
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Anne Nègre-Salvayre
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.).,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
| | - Nathalie Augé
- From the INSERM U-1048 Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.) .,Université Paul Sabatier, Toulouse, France (T.L., M.R., A.S., M.-H.G., N.G., P.A., E.R., R.S., A.N.-S., N.A.)
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10
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Swiader A, Nahapetyan H, Faccini J, D'Angelo R, Mucher E, Elbaz M, Boya P, Vindis C. Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipids. Oncotarget 2018; 7:28821-35. [PMID: 27119505 PMCID: PMC5045359 DOI: 10.18632/oncotarget.8936] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 04/12/2016] [Indexed: 12/31/2022] Open
Abstract
Mitophagy is a critical cellular process that selectively targets damaged mitochondria for autophagosomal degradation both under baseline conditions and in response to stress preventing oxidative damage and cell death. Recent studies have linked alterations in mitochondria function and reduced autophagy with the development of age-related pathologies. However, the significance of mitochondrial autophagy in vessel wall in response to atherogenic lipid stressors is not known. In the present study, we investigated the role of mitophagy on human vascular smooth muscle cells (VSMC) apoptosis induced by oxidized low-density lipoproteins (LDL). We reported for the first time that the engulfment of defective mitochondria by autophagosomes occurred in human VSMC in response to oxidized LDL. The molecular mechanism mediating mitophagy in human VSMC involved dynamin-related protein 1 (Drp1)-mediated mitochondrial fission, accumulation of PTEN-induced putative kinase 1 (PINK1) and the recruitment of the E3 ubiquitin ligase Parkin to mitochondria. Likewise, we found increased voltage-dependent anion channel 1 (VDAC1) and mitofusin 2 (Mnf2) mitochondrial proteins ubiquitination and LC3 association to mitochondria. Using flow cytometry in the presence of lysosomal inhibitors, we showed that PINK1 and Parkin silencing impaired mitophagy flux and enhanced oxidized LDL-induced VSMC apoptosis. In addition, overexpression of PINK1 and Parkin were protective by limiting cell death. Moreover, reduced Bax levels found in VSMC-overexpressing Parkin indicated cross talk among mitophagy and mitochondrial apoptotic signalling pathways. Altogether these data demonstrate that mitophagy is a safeguard mechanism against human VSMC apoptosis induced by atherogenic stressors and highlight mitophagy as a potential target to stabilize atherosclerotic plaque.
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Affiliation(s)
- Audrey Swiader
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Hripsime Nahapetyan
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Julien Faccini
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Romina D'Angelo
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Elodie Mucher
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Meyer Elbaz
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Cécile Vindis
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
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11
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Nègre-Salvayre A, Garoby-Salom S, Swiader A, Rouahi M, Pucelle M, Salvayre R. Proatherogenic effects of 4-hydroxynonenal. Free Radic Biol Med 2017; 111:127-139. [PMID: 28040472 DOI: 10.1016/j.freeradbiomed.2016.12.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/22/2016] [Accepted: 12/24/2016] [Indexed: 01/08/2023]
Abstract
4-hydroxy-2-nonenal (HNE) is a α,β-unsaturated hydroxyalkenal generated by peroxidation of n-6 polyunsaturated fatty acid. This reactive carbonyl compound exhibits a huge number of biological properties that result mainly from the formation of HNE-adducts on free amino groups and thiol groups in proteins. In the vascular system, HNE adduct accumulation progressively leads to cellular dysfunction and tissue damages that are involved in the progression of atherosclerosis and related diseases. HNE contributes to the atherogenicity of oxidized LDL, by forming HNE-apoB adducts that deviate the LDL metabolism to the scavenger receptor pathway of macrophagic cells, and lead to the formation of foam cells. HNE activates transcription factors (Nrf2, NF-kappaB) that (dys)regulate various cellular responses ranging from hormetic and survival signaling at very low concentrations, to inflammatory and apoptotic effects at higher concentrations. Among a variety of cellular targets, HNE can modify signaling proteins involved in atherosclerotic plaque remodeling, particularly growth factor receptors (PDGFR, EGFR), cell cycle proteins, mitochondrial and endoplasmic reticulum components or extracellular matrix proteins, which progressively alters smooth muscle cell proliferation, angiogenesis and induces apoptosis. HNE adducts accumulate in the lipidic necrotic core of advanced atherosclerotic lesions, and may locally contribute to macrophage and smooth muscle cell apoptosis, which may induce plaque destabilization and rupture, thereby increasing the risk of athero-thrombotic events.
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Affiliation(s)
| | | | | | | | | | - Robert Salvayre
- Inserm UMR-1048, France; University of Toulouse, Faculty of Medicine, Biochemistry Dept, Toulouse, France; CHU Toulouse, Rangueil, Toulouse, France
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12
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Nahapetyan H, Swiader A, Faccini J, D'Angelo R, Mucher E, Elbaz M, Boya P, Vindis C. Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipids. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Garcia-Martinez V, Lopez Sanchez C, Hamed W, Hamed W, Hsu JH, Ferrer-Lorente R, Alshamrani M, Pizzicannella J, Vindis C, Badi I, Korte L, Voellenkle C, Niculescu LS, Massaro M, Babaeva AR, Da Silva F, Woudstra L, Berezin A, Bae MK, Del Giudice C, Bageghni SA, Krobert K, Levay M, Vignier N, Ranieri A, Magenta A, Orlandi A, Porro B, Jeon ES, Omori Y, Herold J, Barnett GA, Grochot-Przeczek A, Korpisalo P, Deffge C, Margariti A, Rong W, Maring JA, Gambardella J, Mitrofan CG, Karpinska O, Morbidelli L, Wilkinson FL, Berezin A, Kostina AS, De Mey JGR, Kumar A, Lupieri A, Pellet-Many C, Stamatiou R, Gromotowicz A, Dickhout A, Murina M, Roka-Moiia YM, Malinova L, Diaz-Canestro C, Vigliarolo T, Cuzzocrea S, Szantai A, Medic B, Cassambai S, Korda A, Revnic CR, Borile G, Diokmetzidou A, Murfitt L, Budko A, Fiordelisi A, De Wijs-Meijler DPM, Gevaert AB, Noriega De La Colina A, Benes J, Guillermo Solache Berrocal GSB, Gafarov V, Zhebel VM, Prakaschandra R, Stepien EL, Smith LE, Carluccio MA, Timasheva Y, Paci M, Dorofeyeva NA, Chimed CH, Petelina TI, Sorop O, Genis A, Parepa IR, Tscharre M, Krestjyaninov MV, Maia-Rocha C, Borges L, Sasonko ML, Kapel SS, Stam K, Sommariva E, Stojkovic S, O'reilly J, Chiva-Blanch G, Malinova L, Evtushenko A, Skopal J, Sunderland N, Gegenava T, Charnaia MA, Di Lascio N, Tarvainen SJ, Malandraki-Miller S, Uitterdijk A, Benzoni P, Ruivo E, Humphrey EJ, Arokiaraj MC, Franco D, Garcia-Lopez V, Aranega A, Lopez-Sanchez C, Franco D, Garcia-Lopez V, Aranega A, Garcia-Martinez V, Tayel S, Khader H, El-Helbawy N, Tayel S, Alrefai A, El-Barbary H, Wu JR, Dai ZK, Yeh JL, Sanjurjo-Rodriguez C, Richaud-Patin Y, Blanco FJ, Badimon L, Raya A, Cahill PA, Diomede F, Merciaro I, Trubiani O, Nahapetyan H, Swiader A, Faccini J, Boya P, Elbaz M, Zeni F, Burba I, Bertolotti M, Capogrossi MC, Pompilio G, Raucci A, Widmer-Teske R, Dutzmann J, Bauersachs J, Donde K, Daniel JM, Sedding DG, Simionescu N, Sanda GM, Carnuta MG, Stancu CS, Popescu AC, Popescu MR, Vlad A, Dimulescu DR, Sima AV, Scoditti E, Pellegrino M, Calabriso N, Carluccio MA, Storelli C, De Caterina R, Solodenkova KS, Kalinina EV, Usachiova MN, Lappalainen J, Lee-Rueckert MDEC, Kovanen PT, Biesbroek PS, Emmens RWE, Van Rossum AC, Juffermans LJM, Niessen JWM, Krijnen PAJ, Kremzer A, Samura T, Berezina T, Gronenko E, Kim MK, Park HJ, Bae SK, Sorriento D, Ciccarelli M, Vernieri E, Campiglia P, Trimarco B, Iaccarino G, Hemmings KE, Porter KE, Ainscough JF, Drinkhill MJ, Turner NA, Hiis HG, Cosson MV, Levy FO, Wieland T, Macquart C, Chatzifrangkeskou M, Evans A, Bonne G, Muchir A, Kemp E, Avkiran M, Carlomosti F, D'agostino M, Beji S, Zaccagnini G, Maimone B, Di Stefano V, De Santa F, Cordisco S, Antonini A, Ciarapica R, Dellambra E, Martelli F, Avitabile D, Capogrossi MC, Scioli MG, Bielli A, Agostinelli S, Tarquini C, Tarallo V, De Falco S, Zaninoni A, Fiorelli S, Bianchi P, Teruzzi G, Squellerio I, Turnu L, Lualdi A, Tremoli E, Cavalca V, Lee YJ, Ju ES, Choi JO, Lee GY, Lim BK, Manickam MANOJ, Jung SH, Omiya S, Otsu K, Deffge C, Nowak S, Wagner M, Braun-Dullaeus RC, Kostin S, Daniel JM, Francke A, Subramaniam S, Kanse SM, Al-Lamee K, Schofield CJ, Egginton S, Gershlick AH, Kloska D, Kopacz A, Augustyniak A, Dulak J, Jozkowicz A, Hytonen J, Halonen P, Taavitsainen J, Tarvainen S, Hiltunen T, Liimatainen T, Kalliokoski K, Knuuti J, Yla-Herttuala S, Wagner M, Weinert S, Isermann B, Lee J, Braun-Dullaeus RC, Herold J, Cochrane A, Kelaini S, Bojdo J, Vila Gonzalez M, Hu Y, Grieve D, Stitt AW, Zeng L, Xu Q, Margariti A, Reglin B, Xiang W, Nitzsche B, Maibier M, Pries AR, Vrijsen KR, Chamuleau SAJ, Verhage V, Metz CHG, Lodder K, Van Eeuwijk ECM, Van Dommelen SM, Doevendans PA, Smits AM, Goumans MJ, Sluijter JPG, Sorriento D, Bova M, Loffredo S, Trimarco B, Iaccarino G, Ciccarelli M, Appleby S, Morrell N, Baranowska-Kuczko M, Kloza M, Ambrozewicz E, Kozlowski M, Malinowska B, Kozlowska H, Monti M, Terzuoli E, Ziche M, Mahmoud AM, Jones AM, Wilkinson JA, Romero M, Duarte J, Alexander MY, Kremzer A, Berezina T, Gronenko E, Faggian G, Kostareva AA, Malashicheva AB, Leurgans TM, Nguyen TN, Irmukhamedov A, Riber LP, Mcgeogh R, Comer S, Blanco Fernandez A, Ghigo A, Blaise R, Smirnova NF, Malet N, Vincent P, Limon I, Gayral S, Hirsch E, Laffargue M, Mehta V, Zachary I, Aidonidis I, Kramkowski K, Miltyk W, Kolodziejczyk P, Gradzka A, Szemraj J, Chabielska E, Dijkgraaf I, Bitsch N, Van Hoof S, Verhaegen F, Koenen R, Hackeng TM, Roshchupkin DI, Buravleva KV, Sergienko VI, Zhernossekov DD, Rybachuk VM, Grinenko TV, Furman N, Dolotovskaya P, Shamyunov M, Denisova T, Reiner M, Akhmedov A, Keller S, Miranda M, Briand S, Barile L, Kullak-Ublick G, Luscher T, Camici G, Guida L, Magnone M, Ameri P, Lazzarini E, Fresia C, Bruzzone S, Zocchi E, Di Paola R, Cordaro M, Crupi R, Siracusa R, Campolo M, Bruschetta G, Fusco R, Pugliatti P, Esposito E, Paloczi J, Ruivo E, Gaspar R, Dinnyes A, Kobolak J, Ferdinandy P, Gorbe A, Todorovic Z, Krstic D, Savic Vujovic K, Jovicic D, Basta Jovanovic G, Radojevic Skodric S, Prostran M, Dean S, Mee CJ, Harvey KL, Hussain A, Pena C, Paltineanu B, Voinea S, Revnic F, Ginghina C, Zaglia T, Ceriotti P, Campo A, Carullo P, Armani A, Coppini R, Vida V, Olivotto I, Stellin G, Rizzuto R, De Stefani D, Sandri M, Catalucci D, Mongillo M, Soumaka E, Kloukina I, Tsikitis M, Makridakis M, Varela A, Davos C, Vlachou A, Capetanaki Y, Iqbal MM, Bennett H, Davenport B, Pinali C, Cooper G, Cartwright E, Kitmitto A, Strutynska NA, Mys LA, Sagach VF, Franco A, Sorriento D, Trimarco B, Iaccarino G, Ciccarelli M, Verzijl A, Stam K, Van Duin R, Reiss IKM, Duncker DJ, Merkus D, Shakeri H, Orije M, Leloup AJ, Van Hove CE, Van Craenenbroeck EM, De Meyer GRY, Vrints CJ, Lemmens K, Desjardins-Creapeau L, Wu R, Lamarre-Cliche M, Larochelle P, Bherer L, Girouard H, Melenovsky M, Kvasilova A, Benes J, Ruskova K, Sedmera D, Ana Barral ABV, Martin Fernandez M, Pablo Roman Garcia PRG, Juan Carlos Llosa JCLL, Manuel Naves Diaz MND, Cesar Moris CM, Jorge B Cannata-Andia JBCA, Isabel Rodriguez IR, Voevoda M, Gromova E, Maximov V, Panov D, Gagulin I, Gafarova A, Palahniuk H, Pashkova IP, Zhebel NV, Starzhynska OL, Naidoo DP, Rawojc K, Enguita FJ, Grudzien G, Cordwell SJ, White MY, Massaro M, Scoditti E, Calabriso N, Pellegrino M, Martinelli R, Gatta V, De Caterina R, Nasibullin TR, Erdman VV, Tuktarova IA, Mustafina OE, Hyttinen J, Severi S, Vorobyov GG, Sagach VF, Batmyagmar KH, Lkhagvasuren Z, Gapon LI, Musikhina NA, Avdeeva KS, Dyachkov SM, Heinonen I, Van Kranenburg M, De Beer VJ, Octavia Y, Van Geuns RJ, Van Den Meiracker AH, Van Der Velden J, Merkus D, Duncker DJ, Everson FP, Ogundipe T, Grandjean T, De Boever P, Goswami N, Strijdom H, Suceveanu AI, Suceveanu AP, Mazilu L, Tofoleanu DE, Catrinoiu D, Rohla M, Hauser C, Huber K, Wojta H, Weiss TW, Melnikova MA, Olezov NV, Gimaev RH, Khalaf H, Ruzov VI, Adao R, Mendes-Ferreira P, Santos-Ribeiro D, Rademaker M, Leite-Moreira AF, Bras-Silva C, Alvarenga LAA, Falcao RSP, Dias RR, Lacchini S, Gutierrez PS, Michel JB, Gurfinkel YUI, Atkov OYU, Teichert M, Korn C, Mogler C, Hertel S, Arnold C, Korff T, Augustin HG, Van Duin RWB, De Wijs-Meijler DPM, Verzijl A, Duncker DJ, Merkus D, D'alessandra Y, Farina FM, Casella M, Catto V, Carbucicchio C, Dello Russso A, Stadiotti I, Brambilla S, Chiesa M, Giacca M, Colombo GI, Pompilio G, Tondo C, Ahlin F, Andric T, Tihanyi D, Wojta J, Huber K, O'connell E, Butt A, Murphy L, Pennington S, Ledwidge M, Mcdonald K, Baugh J, Watson C, Suades R, Crespo J, Estruch R, Badimon L, Dyachenko A, Ryabukho V, Evtushenko V, Saushkina YU, Lishmanov YU, Smyshlyaev K, Bykov A, Popov S, Pavlyukova E, Anfinogenova Y, Szigetfu E, Kapornai B, Forizs E, Jenei ZS, Nagy Z, Merkely B, Zima E, Cai A, Dworakowski R, Gibbs T, Piper S, Jegard N, Mcdonagh T, Gegenava M, Dementieva II, Morozov YUA, Barsanti C, Stea F, Lenzarini F, Kusmic C, Faita F, Halonen PJ, Puhakka PH, Hytonen JP, Taavitsainen JM, Yla-Herttuala S, Supit EA, Carr CA, Groenendijk BCW, Gorsse-Bakker C, Panasewicz A, Sneep S, Tempel D, Van Der Giessen WJ, Duncker DJ, Rys J, Daraio C, Dell'era P, Paloczi J, Pigler J, Eder A, Ferdinandy P, Eschenhagen T, Gorbe A, Mazo MM, Amdursky N, Peters NS, Stevens MM, Terracciano CM. Poster session 2Morphogenetic mechanisms290MiR-133 regulates retinoic acid pathway during early cardiac chamber specification291Bmp2 regulates atrial differentiation through miR-130 during early heart looping formationDevelopmental genetics294Association of deletion allele of insertion/deletion polymorphism in alpha 2B adrenoceptor gene and hypertension with or without type 2 diabetes mellitus295Association of G1359A polymorphism of the endocannabinoid type 1 receptor (CNR1) with coronary artery disease (CAD) with type 2 diabetes mellitusCell growth, differentiation and stem cells - Vascular298Gamma-secretase inhibitor prevents proliferation and migration of ductus arteriosus smooth muscle cells: a role of Notch signaling in postnatal closure of ductus arteriosus299Mesenchymal stromal-like cells (MLCs) derived from induced pluripotent stem (iPS) cells: a promising therapeutic option to promote neovascularization300Sonic Hedgehog promotes mesenchymal stem cell differentiation to vascular smooth muscle cells in cardiovacsular disease301Proinflammatory cytokine secretion and epigenetic modification in endothelial cells treated LPS-GinfivalisCell death and apoptosis - Vascular304Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipidsTranscriptional control and RNA species - Vascular307MicroRNA-34a role in vascular calcification308Local delivery of a miR-146a inhibitor utilizing a clinically applicable approach attenuates neointima formation after vascular injury309Long noncoding RNA landscape of hypoxic endothelial cells310Specific circulating microRNAs levels associate with hypertension, hyperglycemia and dysfunctional HDL in acute coronary syndrome patientsCytokines and cellular inflammation - Vascular313Phosphodiesterase5A up-regulation in vascular endothelium under pro-inflammatory conditions: a newly disclosed anti-inflammatory activity for the omega-3polyunsaturated aatty acid docosahexaenoic acid314Cardiovascular risk modifying with extra-low dose anticytokine drugs in rhematoid arthritis315Conversion of human M-CSF macrophages into foam cells reduces their proinflammatory responses to classical M1-polarizing activation316Lymphocytic myocarditis coincides with increased plaque inflammation and plaque hemorrhage in coronary arteries, facilitating myocardial infarction317Serum osteoprotegerin level predictsdeclined numerous of circulating endothelial- derived and mononuclear-derived progenitor cells in patients with metabolic syndromeGrowth factors and neurohormones - Vascular320Effect of gastrin-releasing peptide (GRP) on vascular inflammationSignal transduction - Heart323A new synthetic peptide regulates hypertrophy in vitro through means of the inhibition of nfkb324Inducible fibroblast-specific knockout of p38 alpha map kinase is cardioprotective in a mouse model of isoproterenol-induced cardiac hypertrophy325Regulation of beta-adrenoceptor-evoked inotropic responses by inhibitory G protein, adenylyl cyclase isoforms 5 and 6 and phosphodiesterases326Binding to RGS3 and stimulation of M2 muscarinic acetylcholine receptors modulates the substrate specificity of p190RhoGAP in cardiac myocytes327Cardiac regulation of post-translational modifications, parylation and deacetylation in LMNA dilated cardiomyopathy mouse model328Beta-adrenergic regulation of the b56delta/pp2a holoenzyme in cardiac myocytes through b56delta phosphorylation at serine 573Nitric oxide and reactive oxygen species - Vascular331Oxidative stress-induced miR-200c disrupts the regulatory loop among SIRT1, FOXO1 and eNOS332Antioxidant therapy prevents oxidative stress-induced endothelial dysfunction and Enhances Wound Healing333Morphological and biochemical characterization of red blood cell in coronary artery diseaseCytoskeleton and mechanotransduction - Heart336Novel myosin activator, JSH compounds, increased myocardial contractility without chronotropic effect in ratsExtracellular matrix and fibrosis - Vascular339Ablation of Toll-like receptor 9 causes cardiac rupture after myocardial infarction by attenuating proliferation and differentiation of cardiac fibroblasts340Altered vascular remodeling in the mouse hind limb ischemia model in Factor VII activating protease (FSAP) deficiencyVasculogenesis, angiogenesis and arteriogenesis343Pro-angiogenic effects of proly-hydroxylase inhibitors and their potential for use in a novel strategy of therapeutic angiogenesis for coronary total occlusion344Nrf2 drives angiogenesis in transcription-independent manner: new function of the master regulator of oxidative stress response345Angiogenic gene therapy, despite efficient vascular growth, is not able to improve muscle function in normoxic or chronically ischemic rabbit hindlimbs -role of capillary arterialization and shunting346Effect of PAR-1 inhibition on collateral vessel growth in the murine hind limb model347Quaking is a key regulator of endothelial cell differentiation, neovascularization and angiogenesis348"Emerging angiogenesis" in the chick chorioallantoic membrane (CAM). An in vivo study349Exosomes from cardiomyocyte progenitor cells and mesenchymal stem cells stimulate angiogenesis in vitro and in vivo via EMMPRINEndothelium352Reciprocal regulation of GRK2 and bradykinin receptor stimulation modulate Ca2+ intracellular level in endothelial cells353The roles of bone morphogenetic proteins 9 and 10 in endothelial inflammation and atherosclerosis354The contribution of GPR55 to the L-alpha-lysophosphatidylinositol-induced vasorelaxation in isolated human pulmonary arteries355The endothelial protective ACE inhibitor Zofenoprilat exerts anti-inflammatory activities through H2S production356A new class of glycomimetic drugs to prevent free fatty acid-induced endothelial dysfunction357Endothelial progenitor cells to apoptotic endothelial cell-derived microparticles ration differentiatesas preserved from reduced ejection fractionheart failure358Proosteogenic genes are activated in endothelial cells of patients with thoracic aortic aneurysm359Endothelin ETB receptors mediate relaxing responses to insulin in pericardial resistance arteries from patients with cardiovascular disease (CVD)Smooth muscle and pericytes362CX3CR1 positive myeloid cells regulate vascular smooth muscle tone by inducing calcium oscillations via activation of IP3 receptors363A novel function of PI3Kg on cAMP regulation, role in arterial wall hyperplasia through modulation of smooth muscle cells proliferation364NRP1 and NRP2 play important roles in the development of neointimal hyperplasia in vivo365Azithromycin induces autophagy in aortic smooth muscle cellsCoagulation, thrombosis and platelets368The real time in vivo evaluation of platelet-dependent aldosterone prothrombotic action in mice369Development of a method for in vivo detection of active thrombi in mice370The antiplatelet effects of structural analogs of the taurine chloramine371The influence of heparin anticoagulant drugs on functional state of human platelets372Regulation of platelet aggregation and adenosine diphosphate release by d dimer in acute coronary syndrome (in vitro study)Oxygen sensing, ischaemia and reperfusion375Sirtuin 5 mediates brain injury in a mouse model of cerebral ischemia-reperfusion376Abscisic acid: a new player in cardiomyocyte protection from ischaemia?377Protective effects of ultramicronized palmitoylethanolamide (PEA-um) in myocardial ischaemia and reperfusion injury in vivo378Identification of stem cell-derived cardiomyocytes using cardiac specific markers and additional testing of these cells in simulated ischemia/reperfusion system379Single-dose intravenous metformin treatment could afford significant protection of the injured rat kidney in an experimental model of ischemia-reperfusion380Cardiotoxicity of long acting muscarinic receptor antagonists used for chronic obstructive pulmonary disease381Dependence antioxidant potential on the concentration of amino acids382The impact of ischemia-reperfusion on physiological parameters,apoptosis and ultrastructure of rabbit myocardium with experimental aterosclerosisMitochondria and energetics385MicroRNA-1 dependent regulation of mitochondrial calcium uniporter (MCU) in normal and hypertrophied hearts386Mitochondrial homeostasis and cardioprotection: common targets for desmin and aB-crystallin387Overexpression of mitofusin-2 (Mfn2) and associated mitochondrial dysfunction in the diabetic heart388NO-dependent prevention of permeability transition pore (MPTP) opening by H2S and its regulation of Ca2+ accumulation in rat heart mitochondria389G protein coupled receptor kinase 2 (GRK2) is fundamental in recovering mitochondrial morphology and function after exposure to ionizing radiation (IR)Gender issues392Sex differences in pulmonary vascular control; focus on the nitric oxide pathwayAging395Heart failure with preserved ejection fraction develops when feeding western diet to senescence-accelerated mice396Cardiovascular markers as predictors of cognitive decline in elderly hypertensive patients397Changes in connexin43 in old rats with volume overload chronic heart failureGenetics and epigenetics400Calcium content in the aortic valve is associated with 1G>2G matrix metalloproteinase 1 polymorphism401Neuropeptide receptor gene s (NPSR1) polymorphism and sleep disturbances402Endothelin-1 gene Lys198Asn polymorphism in men with essential hypertension complicated and uncomplicated with chronic heart failure403Association of common polymorphisms of the lipoprotein lipase and pon1 genes with the metabolic syndrome in a sample of community participantsGenomics, proteomics, metabolomics, lipidomics and glycomics405Gene expression quantification using multiplexed color-coded probe pairs to determine RNA content in sporadic cardiac myxoma406Large-scale phosphorylation study of the type 2 diabetic heart subjected to ischemia / reperfusion injury407Transcriptome-based identification of new anti-inflammatory properties of the olive oil hydroxytyrosol in vascular endothelial cell under basal and proinflammatory conditions408Gene polymorphisms combinations and risk of myocardial infarctionComputer modelling, bioinformatics and big data411Comparison of the repolarization reserve in three state-of-the-art models of the human ventricular action potentialMetabolism, diabetes mellitus and obesity414Endothelial monocyte-activating polypeptide-II improves heart function in type -I Diabetes mellitus415Admission glucose level is independent predictor of impaired left ventricular function in patients with acute myocardial infarction: a two dimensional speckle-tracking echocardiography study416Association between biochemical markers of lipid profile and inflammatory reaction and stiffness of the vascular wall in hypertensive patients with abdominal obesity417Multiple common co-morbidities produce left ventricular diastolic dysfunction associated with coronary microvascular dysfunction, oxidative stress and myocardial stiffening418Investigating the cardiovascular effects of antiretroviral drugs in a lean and high fat/sucrose diet rat model of obesity419Statins in the treatment of non-alcoholic steatohepatitis (NASH). Our experience from a 2-year prospective study in Constanta County, Romania420Epicardial adipose tissue as a predictor of cardiovascular outcome in patients with ACS undergoing PCI?Arterial and pulmonary hypertension423Dependence between heart rhythm disorers and ID polymorphism of ACE gene in hypertensive patients424Molecular mechanisms underlying the beneficial effects of Urocortin 2 in pulmonary arterial hypertension425Inhibition of TGf-b axis and action of renin-angiotensin system in human ascending aorta aneurysms426Early signs of microcirculation and macrocirculation abnormalities in prehypertension427Vascular smooth muscle cell-expressed Tie-2 controls vascular tone428Cardiac and vascular remodelling in the development of chronic thrombo-embolic pulmonary hypertension in a novel swine modelBiomarkers431Arrhythmogenic cardiomyopathy: a new, non invasive biomarker432Can circulating microRNAs distinguish type 1 and type 2 myocardial infarction?433Design of a high-throughput multiplex proteomics assay to identify left ventricular diastolic dysfunction in diabetes434Monocyte-derived and P-selectin-carrying microparticles are differently modified by a low fat diet in patients with cardiovascular risk factors who will and who will not develop a cardiovascular event435Red blood cell distribution width assessment by polychromatic interference microscopy of thin films in chronic heart failure436Invasive and noninvasive evaluation of quality of radiofrequency-induced cardiac denervation in patients with atrial fibrillation437The effect of therapeutic hypothermia on the level of brain derived neurotrophic factor (BDNF) in sera following cardiopulmonary resustitation438Novel biomarkers to predict outcome in patients with heart failure and severe aortic stenosis439Biological factors linking depression and anxiety to cardiovascular disease440Troponins and myoglobin dynamic at coronary arteries graftingInvasive, non-invasive and molecular imaging443Diet composition effects on the genetic typing of the mouse ob mutation: a micro-ultrasound characterization of cardiac function, macro and micro circulation and liver steatosis444Characterization of pig coronary and rabbit aortic lesions using IV-OCT quantitative analysis: correlations with histologyGene therapy and cell therapy447Enhancing the survival and angiogenic potential of mouse atrial mesenchymal cells448VCAM-1 expression in experimental myocardial infarction and its relation to bone marrow-derived mononuclear cell retentionTissue engineering451Advanced multi layered scaffold that increases the maturity of stem cell-derived human cardiomyocytes452Response of engineered heart tissue to simulated ischemia/reperfusion in the presence of acute hyperglycemic conditions453Serum albumin hydrogels prevent de-differentiation of neonatal cardiomyocytes454A novel paintbrush technique for transfer of low viscosity ultraviolet light curable cyan methacrylate on saline immersed in-vitro sheep heart. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Laurent AC, Bisserier M, Lucas A, Tortosa F, Roumieux M, De Régibus A, Swiader A, Sainte-Marie Y, Heymes C, Vindis C, Lezoualc'h F. Exchange protein directly activated by cAMP 1 promotes autophagy during cardiomyocyte hypertrophy. Cardiovasc Res 2014; 105:55-64. [PMID: 25411381 DOI: 10.1093/cvr/cvu242] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
AIMS Stimulation of β-adrenergic receptors (β-AR) increases cAMP production and contributes to the pathogenesis of cardiac hypertrophy and failure through poorly understood mechanisms. We previously demonstrated that Exchange protein directly activated by cAMP 1 (Epac1)-induced hypertrophy in primary cardiomyocytes. Among the mechanisms triggered by cardiac stress, autophagy has been highlighted as a protective or harmful response. Here, we investigate whether Epac1 promotes cardiac autophagy and how altered autophagy has an impact on Epac1-induced cardiomyocyte hypertrophy. METHODS AND RESULTS We reported that direct stimulation of Epac1 with the agonist, Sp-8-(4-chlorophenylthio)-2'-O-methyl-cAMP (Sp-8-pCPT) promoted autophagy activation in neonatal cardiomyocytes. Stimulation of β-AR with isoprenaline (ISO) mimicked the effect of Epac1 on autophagy markers. Conversely, the induction of autophagy flux following ISO treatment was prevented in cardiomyocytes pre-treated with a selective inhibitor of Epac1, CE3F4. Importantly, we found that Epac1 deletion in mice protected against β-AR-induced cardiac remodelling and prevented the induction of autophagy. The signalling mechanisms underlying Epac1-induced autophagy involved a Ca(2+)/calmodulin-dependent kinase kinase β (CaMKKβ)/AMP-dependent protein kinase (AMPK) pathway. Finally, we provided evidence that pharmacological inhibition of autophagy using 3-methyladenine (3-MA) or down-regulation of autophagy-related protein 5 (Atg5) significantly potentiated Epac1-promoted cardiomyocyte hypertrophy. CONCLUSION Altogether, these findings demonstrate that autophagy is an adaptive response to antagonize Epac1-promoted cardiomyocyte hypertrophy.
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Affiliation(s)
- Anne-Coline Laurent
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Malik Bisserier
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Alexandre Lucas
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Florence Tortosa
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Marie Roumieux
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Annélie De Régibus
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Audrey Swiader
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Yannis Sainte-Marie
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Christophe Heymes
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Cécile Vindis
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
| | - Frank Lezoualc'h
- INSERM, UMR-1048, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse F-31432, France Université de Toulouse, UPS, Toulouse F-31432, France
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Larroque-Cardoso P, Swiader A, Ingueneau C, Nègre-Salvayre A, Elbaz M, Reyland ME, Salvayre R, Vindis C. Role of protein kinase C δ in ER stress and apoptosis induced by oxidized LDL in human vascular smooth muscle cells. Cell Death Dis 2013; 4:e520. [PMID: 23449456 PMCID: PMC3734829 DOI: 10.1038/cddis.2013.47] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
During atherogenesis, excess amounts of low-density lipoproteins (LDL) accumulate in the subendothelial space where they undergo oxidative modifications. Oxidized LDL (oxLDL) alter the fragile balance between survival and death of vascular smooth muscle cells (VSMC) thereby leading to plaque instability and finally to atherothrombotic events. As protein kinase C δ (PKCδ) is pro-apoptotic in many cell types, we investigated its potential role in the regulation of VSMC apoptosis induced by oxLDL. We found that human VSMC silenced for PKCδ exhibited a protection towards oxLDL-induced apoptosis. OxLDL triggered the activation of PKCδ as shown by its phosphorylation and nuclear translocation. PKCδ activation was dependent on the reactive oxygen species generated by oxLDL. Moreover, we demonstrated that PKCδ participates in oxLDL-induced endoplasmic reticulum (ER) stress-dependent apoptotic signaling mainly through the IRE1α/JNK pathway. Finally, the role of PKCδ in the development of atherosclerosis was supported by immunohistological analyses showing the colocalization of activated PKCδ with ER stress and lipid peroxidation markers in human atherosclerotic lesions. These findings highlight a role for PKCδ as a key regulator of oxLDL-induced ER stress-mediated apoptosis in VSMC, which may contribute to atherosclerotic plaque instability and rupture.
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