Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression.

Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression. Research Abstract Details 

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Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression. Abstract Text:

,Marc Lehmann,Heinz Vogelsang,Eberhard Straube, ,Marc Lehmann,Heinz Vogelsang,Eberhard Straube, ,Marc Lehmann,Heinz Vogelsang,Eberhard Straube,

Chlamydia pneumoniae infection may play a role in the pathogenesis of atherosclerosis. In this study, an oligonucleotide microarray was utilized to examine the transcriptional response of human aortic smooth muscle cells (AoSMC) to C. pneumoniae infection. Alteration of mRNA expression in 71 out of 780 genes was detected at 24 h after infection. Among the down-regulated genes, platelet-derived growth factor receptor-beta (PDGFR-beta) was identified as a target for further analysis because the PDGF system is involved in the fibroproliferative response of SMC in atherogenesis. Reverse transcriptase PCR analysis demonstrated that C. pneumoniae inhibits the up-regulation of PDGFR-beta mRNA occurring in AoSMC after mock infection. PDGFR-beta protein synthesis was examined by immunoblotting and fluorescence-activated cell sorting. Compared with mock-infected cells, the amount of receptor protein was reduced at 24, 48, and 72 h after infection. Diminished PDGFR-beta synthesis in infected cultures was accompanied by the suppression of AoSMC growth following PDGF-BB stimulation. The interference of C. pneumoniae with PDGFR-beta expression may result in decreased SMC proliferation in atherosclerotic plaques, thereby affecting the development and stability of advanced lesions.

Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression. Publishing Authors By Initials

J ,M Lehmann,H Vogelsang,E Straube,J ,M Lehmann,H Vogelsang,E Straube,J ,M Lehmann,H Vogelsang,E Straube,

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Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: FEMS immunology and medical microbiology

VOLUME: 51

Page Numbers: 363-71

Journal Abbreviation: FEMS Immunol. Med. Microbiol.

ISSN: 0928-8244

DAY: 29

MONTH: 08

YEAR: 2007

Chlamydia pneumoniae infection of aortic smooth muscle cells reduces platelet-derived growth factor receptor-beta expression. Information

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LANGUAGE: eng

NlmUniqueID: 9315554

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AFFILIATION: Institute of Medical Microbiology, Friedrich Schiller University of Jena, Jena, Germany. juergen.roedel@med.uni-jena.de

Country: England

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MEDLINETA: FEMS Immunol Med Microbiol

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