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Blood, 15 March 2006, Vol. 107, No. 6, pp. 2322-2329. Prepublished online as a Blood First Edition Paper on September 27, 2005; DOI 10.1182/blood-2005-06-2377. This Article Full Text Full Text (PDF) All Versions of this Article: 2005-06-2377v1 107/6/2322    most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Rights and Permissions Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Liu, M. Y. Articles by Khachigian, L. M. Search for Related Content PubMed PubMed Citation Articles by Liu, M. Y. Articles by Khachigian, L. M. Related Collections Hemostasis, Thrombosis, and Vascular Biology Gene Expression Social Bookmarking                   What's this?  Previous Article  |  Table of Contents  |  Next Article  HEMOSTASIS, THROMBOSIS, AND VASCULAR BIOLOGY Inducible platelet-derived growth factor D-chain expression by angiotensin II and hydrogen peroxide involves transcriptional regulation by Ets-1 and Sp1 Mary Yanxia Liu, Melanie Eyries, Chunyan Zhang, Fernando S. Santiago, and Levon M. Khachigian From the Centre for Vascular Research, Department of Pathology, University of New South Wales, and the Department of Haematology, Prince of Wales Hospital, Sydney, Australia. Platelet-derived growth factor D-chain (PDGF-D) is the newest member of the PDGF family of mitogens and chemoattractants expressed in a wide variety of cell types, including vascular smooth muscle cells (SMCs). The molecular mechanisms regulating PDGF-D transcription are not known. Primer extension analysis mapped a single transcriptional start site to the ccAGCGC motif with several potential Ets motifs located upstream. Ets-1, but not Ets-1 bearing only the DNA-binding domain, activates the PDGF-D promoter and mRNA expression in SMCs. Ets site D3 (–470GGAT–467) is singly required for basal and Ets-1–inducible PDGF-D promoter-dependent expression. D3 supports the interaction of endogenous and recombinant Ets-1 and Sp1. Sp1, like Ets-1, induces PDGF-D transcription and mRNA expression, which is blocked by mutant Ets-1. H2O2 stimulates Ets-1, but not Sp1, and activates D3-dependent PDGF-D transcription. Ets-1 and Sp1 siRNA block peroxide-inducible PDGF-D expression. Angiotensin II (ATII) induction of PDGF-D and Ets-1 was blocked by prior incubation of the cells with PEG-catalase, but not BSA, indicating that ATII-inducible Ets-1 and PDGF-D expression is mediated via H2O2. Thus, 2 separate trans-acting factors regulate PDGF-D transcription, alone and in response to oxidative stress. CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this? This article has been cited by other articles: E. Sanchez-Guerrero, V. C. Midgley, and L. M. Khachigian Angiotensin II induction of PDGF-C expression is mediated by AT1 receptor-dependent Egr-1 transactivation Nucleic Acids Res., April 1, 2008; 36(6): 1941 - 1951. [Abstract] [Full Text] [PDF] N. Y. Tan, V. C. Midgley, M. M. Kavurma, F. S. Santiago, X. Luo, R. Peden, R. G. Fahmy, M. C. Berndt, M. P. Molloy, and L. M. Khachigian Angiotensin II-Inducible Platelet-Derived Growth Factor-D Transcription Requires Specific Ser/Thr Residues in the Second Zinc Finger Region of Sp1 Circ. Res., February 29, 2008; 102(4): e38 - e51. [Abstract] [Full Text] [PDF] K. N. Farrow, B. S. Groh, P. T. Schumacker, S. Lakshminrusimha, L. Czech, S. F. Gugino, J. A. Russell, and R. H. Steinhorn Hyperoxia Increases Phosphodiesterase 5 Expression and Activity in Ovine Fetal Pulmonary Artery Smooth Muscle Cells Circ. Res., February 1, 2008; 102(2): 226 - 233. [Abstract] [Full Text] [PDF]

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