Medizinische Universität Graz - Research portal
Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Morty, RE; Nejman, B; Kwapiszewska, G; Hecker, M; Zakrzewicz, A; Kouri, FM; Peters, DM; Dumitrascu, R; Seeger, W; Knaus, P; Schermuly, RT; Eickelberg, O.
Dysregulated bone morphogenetic protein signaling in monocrotaline-induced pulmonary arterial hypertension.
Arterioscler Thromb Vasc Biol. 2007; 27(5): 1072-1078.
Doi: 10.1161/ATVBAHA.107.141200
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- Co-authors Med Uni Graz
- Kwapiszewska-Marsh Grazyna
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- Abstract:
- BACKGROUND: Mutations in the bmpr2 gene, encoding the type II bone morphogenetic protein (BMP) receptor, have been identified in patients with pulmonary arterial hypertension (PAH), implicating BMP signaling in PAH. The aim of this study was to assess BMP signaling and its physiological effects in a monocrotaline (MCT) model of PAH. METHODS AND RESULTS: Expression of BMP receptors Ib and II, and Smads 4, 5, 6, and 8, was downregulated in lungs but not kidneys of MCT-treated rats. Smad1 phosphorylation and expression of BMP/Smad target genes id1 and id3 was also reduced, although ERK1/2 and p38(MAPK) phosphorylation remained unaffected. BMP receptor and Smad expression, Smad1 phosphorylation, and induction of the BMP/Smad-responsive element of the id1 promoter were reduced in pulmonary artery smooth muscle cells (PASMCs) from MCT-treated rats. As a consequence of impaired BMP/Smad signaling, PASMCs from MCT-treated rats were resistant to apoptosis induced by BMP-4 and BMP-7, and were also resistant to BMP-4 antagonism of proliferation induced by platelet-derived growth factor. CONCLUSION: BMP signaling and BMP-regulated physiological phenomena are perturbed in MCT-treated rats, lending solid support to the proposed roles for BMP signaling in the pathogenesis of human PAH.
- Find related publications in this database (using NLM MeSH Indexing)
- Animals -
- Apoptosis -
- Bone Morphogenetic Protein Receptors, Type I - genetics Bone Morphogenetic Protein Receptors, Type I - metabolism
- Bone Morphogenetic Protein Receptors, Type II - genetics Bone Morphogenetic Protein Receptors, Type II - metabolism
- Cell Proliferation -
- Disease Models, Animal -
- Disease Progression -
- Down-Regulation -
- Hypertension, Pulmonary - chemically induced Hypertension, Pulmonary - metabolism Hypertension, Pulmonary - pathology
- Immunoblotting -
- Immunohistochemistry -
- Male -
- Monocrotaline - toxicity
- Polymerase Chain Reaction -
- Pulmonary Artery - metabolism Pulmonary Artery - pathology
- RNA - genetics RNA - metabolism
- Rats -
- Rats, Sprague-Dawley -
- Signal Transduction -
- Smad4 Protein - genetics Smad4 Protein - metabolism
- Smad5 Protein - genetics Smad5 Protein - metabolism
- Smad6 Protein - genetics Smad6 Protein - metabolism
- Smad8 Protein - genetics Smad8 Protein - metabolism
- Find related publications in this database (Keywords)
- bone morphogenetic proteins
- monocrotaline
- pulmonary arterial hypertension
- Smad
- vascular remodeling
- VSMC proliferation