1
|
Rachedi N, Torrino S, Abelanet S, Gay A, Debayle D, Perros F, Bertero T. Extracellular matrix remodeling and its implication in vascular cells reprogramming during pulmonary arterial hypertension. Rev Mal Respir 2023. [DOI: 10.1016/j.rmr.2022.11.040] [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] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
|
2
|
Mumby S, Perros F, Hui C, Xu BL, Xu W, Elyasigomari V, Hautefort A, Manaud G, Humbert M, Chung KF, Wort SJ, Adcock IM. Extracellular matrix degradation pathways and fatty acid metabolism regulate distinct pulmonary vascular cell types in pulmonary arterial hypertension. Pulm Circ 2021; 11:2045894021996190. [PMID: 34408849 PMCID: PMC8366141 DOI: 10.1177/2045894021996190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 09/01/2020] [Indexed: 12/15/2022] Open
Abstract
Pulmonary arterial hypertension describes a group of diseases characterised by raised pulmonary vascular resistance, resulting from vascular remodelling in the pre-capillary resistance arterioles. Left untreated, patients die from right heart failure. Pulmonary vascular remodelling involves all cell types but to date the precise roles of the different cells is unknown. This study investigated differences in basal gene expression between pulmonary arterial hypertension and controls using both human pulmonary microvascular endothelial cells and human pulmonary artery smooth muscle cells. Human pulmonary microvascular endothelial cells and human pulmonary artery smooth muscle cells from pulmonary arterial hypertension patients and controls were cultured to confluence, harvested and RNA extracted. Whole genome sequencing was performed and after transcript quantification and normalisation, we examined differentially expressed genes and applied gene set enrichment analysis to the differentially expressed genes to identify putative activated pathways. Human pulmonary microvascular endothelial cells displayed 1008 significant (p ≤ 0.0001) differentially expressed genes in pulmonary arterial hypertension samples compared to controls. In human pulmonary artery smooth muscle cells, there were 229 significant (p ≤ 0.0001) differentially expressed genes between pulmonary arterial hypertension and controls. Pathway analysis revealed distinctive differences: human pulmonary microvascular endothelial cells display down-regulation of extracellular matrix organisation, collagen formation and biosynthesis, focal- and cell-adhesion molecules suggesting severe endothelial barrier dysfunction and vascular permeability in pulmonary arterial hypertension pathogenesis. In contrast, pathways in human pulmonary artery smooth muscle cells were mainly up-regulated, including those for fatty acid metabolism, biosynthesis of unsaturated fatty acids, cell–cell and adherens junction interactions suggesting a more energy-driven proliferative phenotype. This suggests that the two cell types play different mechanistic roles in pulmonary arterial hypertension pathogenesis and further studies are required to fully elucidate the role each plays and the interactions between these cell types in vascular remodelling in disease progression.
Collapse
Affiliation(s)
- Sharon Mumby
- Respiratory Science, NHLI, Imperial College London, London, UK
| | - F Perros
- UMRS 999, Laboratoire d'Excellence en Recherche sur le Médicament et l'Innovation Thérapeutique, INSERM and Paris-Sud, Le Plessis Robinson, France.,Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Québec, Canada
| | - C Hui
- Centre for Respiratory & Critical Care Medicine, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - B L Xu
- Centre for Respiratory & Critical Care Medicine, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - W Xu
- Centre for Respiratory & Critical Care Medicine, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - V Elyasigomari
- Department of Computing, Data Science Institute, Imperial College London, London, UK
| | - A Hautefort
- UMRS 999, Laboratoire d'Excellence en Recherche sur le Médicament et l'Innovation Thérapeutique, INSERM and Paris-Sud, Le Plessis Robinson, France
| | - G Manaud
- UMRS 999, Laboratoire d'Excellence en Recherche sur le Médicament et l'Innovation Thérapeutique, INSERM and Paris-Sud, Le Plessis Robinson, France
| | - M Humbert
- Département Hospitalo-Universitaire Thorax Innovation, Centre de Référence de l'Hypertension Pulmonaire Sévère, Service de Pneumologie et Réanimation Respiratoire, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - K F Chung
- Respiratory Science, NHLI, Imperial College London, London, UK
| | - S J Wort
- Respiratory Science, NHLI, Imperial College London, London, UK.,National Pulmonary Hypertension Service, Royal Brompton Hospital, London, UK
| | - I M Adcock
- Respiratory Science, NHLI, Imperial College London, London, UK
| |
Collapse
|
3
|
Manaud G, Vinhas M, Abdoulkarim B, Soubrier F, Bignard J, Claude O, Florio M, Banghua S, Nadaud S, Stijn V, Rémy S, Anegon I, Mercier O, Humbert M, Antigny F, Montani D, Perros F. CN2 regulates BMP signaling: Consequence for PVOD pathobiology and therapeutic management. Archives of Cardiovascular Diseases Supplements 2020. [DOI: 10.1016/j.acvdsp.2020.03.046] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
4
|
Ruffenach G, Bonnet S, Rousseaux S, Khochbin S, Provencher S, Perros F. Identity crisis in pulmonary arterial hypertension. Pulm Circ 2018; 8:2045893217746054. [PMID: 29206084 PMCID: PMC5731718 DOI: 10.1177/2045893217746054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 09/14/2017] [Indexed: 11/17/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) shares many hallmarks with cancer. Cancer cells acquire their hallmarks by a pathological Darwinian evolution process built on the so-called cancer cell "identity crisis." Here we demonstrate that PAH shares the most striking features of the cancer identity crisis: the ectopic expression of normally silent tissue-specific genes.
Collapse
Affiliation(s)
- G. Ruffenach
- Groupe de recherche en hypertension pulmonaire et biologie vasculaire, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, QC, Canada
| | - S. Bonnet
- Groupe de recherche en hypertension pulmonaire et biologie vasculaire, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, QC, Canada
| | - S. Rousseaux
- CNRS UMR5309, Inserm U1209, Université de Grenobles Alpes, Institut Albert Bonniot, Grenoble, France
| | - S. Khochbin
- CNRS UMR5309, Inserm U1209, Université de Grenobles Alpes, Institut Albert Bonniot, Grenoble, France
| | - S. Provencher
- Groupe de recherche en hypertension pulmonaire et biologie vasculaire, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, QC, Canada
| | - F. Perros
- Groupe de recherche en hypertension pulmonaire et biologie vasculaire, Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, QC, Canada
- INSERM UMR_S 999, Université Paris–Sud, Laboratoire d’Excellence (LabEx) en Recherche sur le Médicament et l’Innovation Thérapeutique (LERMIT), Centre Chirurgical Marie Lannelongue, Le Plessis Robinson, France
| |
Collapse
|
5
|
Günther S, Perros F. Utilisation d’un modèle expérimental de maladie veino-occlusive pulmonaire. Rev Mal Respir 2016. [DOI: 10.1016/j.rmr.2015.10.728] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
6
|
Shao D, Garfied BE, Crosby A, Young P, Perros F, Humbert M, Adcock IM, Morrell N, Wort SJ. S6 The profiles of JMJD3, UTX and H3K27me3 expression in pulmonary vasculature in rat MCT model of PAH and human iPAH: implications for pulmonary arterial hypertension. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.12] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
Hautefort A, Girerd B, Montani D, Cohen Kaminsky S, Lambrecht B, Humbert M, Perros F. Th17 polarization in pulmonary arterial hypertension. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2015.02.015] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Montani D, Perros F, Gunther S, Ranchoux B, Godinas L, Antigny F, Chaumais M, Dorfmuller P, Hautefort A, Savale L, Jais X, Sitbon O, Simonneau G, Humbert M. Maladie veino-occlusive pulmonaire induite par la mitomycine : données humaines et expérimentales. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2014.11.048] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
9
|
Ranchoux B, Rucker-Martin C, Pechoux C, Bogaard H, Dorfmüller P, Raymond N, Cohen-Kaminsky S, Humbert M, Perros F. Implication de la transition endothéliale mésenchymateuse dans l’hypertension artérielle pulmonaire. Rev Mal Respir 2014. [DOI: 10.1016/j.rmr.2014.04.051] [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] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Shao D, Gambaryan N, Meng C, Perros F, Humbert M, Adcock I, Wort S. S142 The role of H3K27 methylation in vascular endothelial cell proliferation and function: implications for pulmonary arterial hypertension. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.149] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
11
|
Montani D, Guignabert C, Perros F, Humbert M. [Pathophysiology of pulmonary hypertension: advances and prospects]. Rev Mal Respir 2012; 29:950-2. [PMID: 23101636 DOI: 10.1016/j.rmr.2012.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 07/09/2012] [Indexed: 11/19/2022]
|
12
|
Gambaryan N, Cohen-Kaminsky S, Montani D, Girerd B, Huertas A, Seferian A, Humbert M, Perros F. Circulating fibrocytes and pulmonary arterial hypertension. Eur Respir J 2012; 39:210-2. [PMID: 22210811 DOI: 10.1183/09031936.00039811] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
13
|
Huertas A, Tu L, Guignabert C, Gambaryan N, Girerd B, Perros F, Montani D, Cohen-Kaminsky S, Humbert M. Leptine et dysfonction endothéliale dans l’immunopathologie de l’hypertension artérielle pulmonaire idiopathique. Rev Mal Respir 2012. [DOI: 10.1016/j.rmr.2011.10.064] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Montani D, Bergot E, Günther S, Savale L, Bergeron A, Bourdin A, Bouvaist H, Canuet M, Pison C, Macro M, Poubeau P, Natali D, Guignabert C, Perros F, O’callaghan DS, Jais X, Zalcman G, Sitbon O, Simonneau G, Humbert M. Hypertension artérielle pulmonaire induite par le dasatinib (dual Src/Abl kinase inhibitor). Rev Mal Respir 2012. [DOI: 10.1016/j.rmr.2011.10.072] [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] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
15
|
Price L, Caramori G, Dorfmuller P, Perros F, Zhu J, Shao D, Humbert M, Adcock I, Wort S. P29 Endothelial cell NF-kB activation is increased in human idiopathic PAH. Thorax 2010. [DOI: 10.1136/thx.2010.150961.29] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
16
|
Shao D, Perros F, Humbert M, Caramori G, Price L, Addcock I, Wort S. S154 Is there a role for IL-33 in the pathogenesis of pulmonary arterial hypertension? Thorax 2010. [DOI: 10.1136/thx.2010.150953.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
17
|
Price LC, Wort SJ, Montani D, Tcherakian C, Dorfmuller P, Souza R, Shao D, Simonneau G, Howard LS, Adcock I, Humbert M, Perros F. S152 Dexamethasone reverses established monocrotaline-induced pulmonary hypertension in rats and increases pulmonary BMPR2 expression. Thorax 2010. [DOI: 10.1136/thx.2010.150953.3] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
18
|
Gambaryan N, Perros F, Montani D, Cohen-Kaminsky S, Mazmanian GM, Humbert M. Imatinib inhibits bone marrow-derived c-kit+ cell mobilisation in hypoxic pulmonary hypertension. Eur Respir J 2010; 36:1209-11. [DOI: 10.1183/09031936.00052210] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
19
|
Gambaryan N, Perros F, Montani D, Cohen-Kaminsky S, Mazmanian M, Renaud JF, Simonneau G, Lombet A, Humbert M. Targeting of c-kit+ haematopoietic progenitor cells prevents hypoxic pulmonary hypertension. Eur Respir J 2010; 37:1392-9. [PMID: 20884740 DOI: 10.1183/09031936.00045710] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Haematopoietic c-kit+ progenitor cells may contribute to pulmonary vascular remodelling and pulmonary hypertension (PH). Stromal derived factor-1 (SDF-1/CXCL12) and its receptors CXCR4 and CXCR7 have been shown to be critical for homing and mobilisation of haematopoietic c-kit+ progenitor cells in the perivascular niche. We administered AMD3100, a CXCR4 antagonist, and CCX771, a CXCR7 antagonist, to chronic hypoxia exposed mice in order to study the role of c-kit+ progenitor cells in PH. CXCL12, CXCR4 and CXCR7 protein expression, haemodynamic parameters, right ventricular mass, extent of vascular remodelling and perivascular progenitor cell accumulation were studied. Chronic hypoxia-exposed mice showed increased total lung tissue expression of CXCR4, CXCR7 and CXCL12 after development of PH. This was associated with significantly increased right ventricular systolic pressure and evidence of right ventricular hypertrophy, vascular remodelling and perivascular c-kit+/sca-1+ progenitor cell accumulation. CCX771 administration did not abrogate these effects. In contrast, administration of AMD3100, whether alone or combined with CCX771, prevented vascular remodelling, PH and perivascular accumulation of c-kit+/sca-1+ progenitor cells, with a synergistic effect of these agents. This study offers important pathophysiological insights into the role of haematopoietic c-kit+ progenitors in hypoxia-induced vascular remodelling and may have therapeutic implications for PH.
Collapse
Affiliation(s)
- N Gambaryan
- Faculté de médecine, Université Paris-Sud, Kremlin-Bicêtre, France
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Price LC, Montani D, Tcherakian C, Dorfmuller P, Souza R, Gambaryan N, Chaumais MC, Shao DM, Simonneau G, Howard LS, Adcock IM, Wort SJ, Humbert M, Perros F. Dexamethasone reverses monocrotaline-induced pulmonary arterial hypertension in rats. Eur Respir J 2010; 37:813-22. [DOI: 10.1183/09031936.00028310] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
21
|
Perros F, Hoogsteden HC, Coyle AJ, Lambrecht BN, Hammad H. Blockade of CCR4 in a humanized model of asthma reveals a critical role for DC-derived CCL17 and CCL22 in attracting Th2 cells and inducing airway inflammation. Allergy 2009; 64:995-1002. [PMID: 19630858 DOI: 10.1111/j.1398-9995.2009.02095.x] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND As Th2 type lymphocytes orchestrate the cardinal features of allergic asthma, inhibiting their recruitment to the lungs could be of therapeutic benefit. Although human Th2 cells express the CCR4 chemokine receptor and increased production of CCR4 ligands has been found in asthmatic airways, studies in animals have reached contradictory conclusions on whether blocking this pathway would be beneficial. OBJECTIVE As a lack of efficacy might be due to differences between mouse and man, we readdressed this question using a humanized severe combined immunodeficiency model of asthma. METHODS Mice received peripheral blood mononuclear cells from house dust mite (HDM) allergic asthmatic patients and then underwent bronchial challenge with HDM. RESULTS This resulted in marked allergic inflammation and bronchial hyper-reactivity. Administration of CCR4 blocking antibody abolished the airway eosinophilia, goblet cell hyperplasia, IgE synthesis and bronchial hyper-reactivity. In this chimeric system, human CD11c+ dendritic cells (DCs) were the predominant source of CCR4 ligands, suggesting that DC-derived chemokines attract Th2 cells. In separate experiments using human DCs, in vitro exposure to HDM of DCs from HDM allergic patients but not healthy controls caused CCL17 and CCL22 release that resulted in chemoattraction of polarized human Th2 cells in a CCR4-dependent way. CONCLUSIONS Taken together, our data provide proof of concept that CCR4 blockade inhibits the salient features of asthma and justify further clinical development of CCR4 antagonists for this disease.
Collapse
Affiliation(s)
- F Perros
- Laboratory of Immunoregulation, University Hospital of Ghent, De Pintelaan 185, Ghent, Belgium
| | | | | | | | | |
Collapse
|
22
|
Le Pavec J, Perros F, Eddahibi S, Decante B, Dorfmuller P, Sitbon O, Lebrec D, Humbert M, Mazmanian M, Herve P. Cirrhosis ameliorates monocrotaline-induced pulmonary hypertension in rats. Eur Respir J 2009; 34:731-9. [DOI: 10.1183/09031936.00006508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
23
|
Perros F, Girerd B, Emilie D, Simonneau G, Humbert M. 087 Cellules dendritiques et hypertension artérielle pulmonaire. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)74378-4] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
24
|
Perros F, Dorfmüller P, Souza R, Durand-Gasselin I, Mussot S, Mazmanian M, Hervé P, Emilie D, Simonneau G, Humbert M. Dendritic cell recruitment in lesions of human and experimental pulmonary hypertension. Eur Respir J 2007; 29:462-8. [PMID: 17107989 DOI: 10.1183/09031936.00094706] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In the present study, the hypothesis that dendritic cells (DCs), key players in immunity and tolerance, might be involved in the immunopathology of idiopathic pulmonary arterial hypertension (IPAH) was tested. The phenotype and localisation of DCs were characterised by immunohistochemistry and double-labelling immunofluorescence in lung samples from controls, human IPAH patients and an experimental pulmonary hypertension model (monocrotaline-exposed rats). As compared with controls, morphometric analysis demonstrated increased numbers of dendritic cell-specific intercellular adhesion molecule-grabbing nonintegrin (DC-SIGN)-positive cells in muscular pulmonary arteries in IPAH and OX-62-positive DCs in monocrotaline-induced pulmonary hypertension. In human samples, the mean+/-SEM number of DC-SIGN-positive cells.artery(-1) of 100-300 microm diameter was 1.4+/-0.4 in controls versus 26.4+/-2.7 in IPAH. In rats, the number of OX-62-positive cells.artery(-1) of 50-150 microm diameter was 0.5+/-0.2 in controls, and 0.7+/-0.5, 3.1+/-0.5 and 8.4+/-0.6 at day 7, 14 and 28 after monocrotaline exposure, respectively. Human complex lesions of muscular pulmonary arteries showed transmural DC infiltration. Phenotyping revealed an immature DC profile in human and experimental pulmonary hypertension. The results support the concept that immature dendritic cells accumulate in remodelled pulmonary vessels and hence could be involved in the immunopathology of pulmonary hypertension.
Collapse
MESH Headings
- Animals
- Antigens, Differentiation/metabolism
- Cell Adhesion Molecules/metabolism
- Dendritic Cells/immunology
- Dendritic Cells/pathology
- Disease Models, Animal
- Humans
- Hypertension, Pulmonary/immunology
- Hypertension, Pulmonary/pathology
- Immunoenzyme Techniques
- Lectins, C-Type/metabolism
- Lung/immunology
- Lung/pathology
- Male
- Microscopy, Fluorescence
- Monocrotaline
- Muscle, Smooth, Vascular/immunology
- Muscle, Smooth, Vascular/pathology
- Rats
- Rats, Wistar
- Receptors, Cell Surface/metabolism
Collapse
Affiliation(s)
- F Perros
- UPRES EA2705, Service de Pneumologie, Centre National de Référence de l'Hypertension Artérielle Pulmonaire, Hôpital Antoine-Béclère, Assistance Publique-Hôpitaux de Paris, Université Paris-Sud, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Perros F, Dorfmüller P, Souza R, Hervé P, Emilie D, Simonneau G, Humbert M. 403 Recrutement de cellules dendritiques dans les lésions vasculaires de l’hypertension pulmonaire humaine et expérimentale. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)72779-1] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
26
|
Perros F, Dorfmüller P, Souza R, Durand-Gasselin I, Godot V, Capel F, Adnot S, Eddahibi S, Mazmanian M, Fadel E, Hervé P, Simonneau G, Emilie D, Humbert M. Fractalkine-induced smooth muscle cell proliferation in pulmonary hypertension. Eur Respir J 2006; 29:937-43. [PMID: 17182651 DOI: 10.1183/09031936.00104706] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Pulmonary hypertension is characterised by a progressive increase in pulmonary arterial resistance due to endothelial and smooth muscle cell proliferation resulting in chronic obstruction of small pulmonary arteries. There is evidence that inflammatory mechanisms may contribute to the pathogenesis of human and experimental pulmonary hypertension. The aim of the study was to address the role of fractalkine (CX3CL1) in the inflammatory responses and pulmonary vascular remodelling of a monocrotaline-induced pulmonary hypertension model. The expression of CX3CL1 and its receptor CX3CR1 was studied in monocrotaline-induced pulmonary hypertension by means of immunohistochemistry and quantitative reverse-transcription PCR on laser-captured microdissected pulmonary arteries. It was demonstrated that CX3CL1 was expressed by inflammatory cells surrounding pulmonary arterial lesions and that smooth muscle cells from these vessels had increased CX3CR1 expression. It was then shown that cultured rat pulmonary artery smooth muscle cells expressed CX3CR1 and that CX3CL1 induced proliferation but not migration of these cells. In conclusion, the current authors proposed that fractalkine may act as a growth factor for pulmonary artery smooth muscle cells. Chemokines may thus play a role in pulmonary artery remodelling.
Collapse
MESH Headings
- Analysis of Variance
- Animals
- Blotting, Western
- Cell Division/drug effects
- Chemokine CX3CL1
- Chemokines, CX3C/metabolism
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/metabolism
- Hypertension, Pulmonary/physiopathology
- Immunohistochemistry
- Male
- Membrane Proteins/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Myocytes, Smooth Muscle/drug effects
- Rats
- Rats, Wistar
- Reverse Transcriptase Polymerase Chain Reaction
Collapse
Affiliation(s)
- F Perros
- UPRES EA2705, Service de Pneumologie, Centre National de Référence de l'Hypertension Artérielle Pulmonaire, Hôpital Antoine-Béclère, Assistance-Publique Hôpitaux de Paris, Université Paris-Sud 11, Robinson, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Abstract
Inflammatory mechanisms appear to play a significant role in some types of pulmonary hypertension (PH), including monocrotaline-induced PH in rats and pulmonary arterial hypertension of various origins in humans, such as connective tissue diseases (scleroderma, systemic lupus erythematosus, mixed connective disease), human immunodeficiency virus infection, or plasma cell dyscrasia with polyneuropathy, organomegaly, endocrinopathy, monoclonal (M) protein and skin changes (POEMS) syndrome. Interestingly, some patients with severe pulmonary arterial hypertension associated with systemic lupus erythematosus have experienced significant improvements with immunosuppressive therapy, emphasising the relevance of inflammation in a subset of patients presenting with PH. Patients with primary PH (PPH) also have some immunological disturbances, suggesting a possible role for inflammation in the pathophysiology of this disease. A subset of PPH patients have been shown to have circulating autoantibodies, including antinuclear antibodies, as well as elevated circulating levels of the pro-infammatory cytokines, interleukins -1 and -6. Lung histology has also revealed inflammatory infiltrates in the range of plexiform lesions in patients displaying severe PPH, as well as an increased expression of the chemokines regulated upon activation, normal T-cell expressed and secreted (RANTES) and fractalkine. Further analysis of the role of inflammatory mechanisms is necessary to understand whether this component of the disease is relevant to its pathophysiology.
Collapse
Affiliation(s)
- P Dorfmüller
- Centre for Pulmonary Vascular Diseases UPRES EA 2705, Dept of Respiratory and Intensive Care Medicine, South Paris Cytokine Institute, Antoine Béclère Hospital, Assistance Publique-Hôpitaux de Paris, South Paris University, Clamart, France
| | | | | | | |
Collapse
|