PMID- 20428211 OWN - NLM STAT- MEDLINE DCOM- 20110119 LR - 20211025 IS - 1476-5462 (Electronic) IS - 0969-7128 (Linking) VI - 17 IP - 9 DP - 2010 Sep TI - Ets-1 promotes the progression of cerebral aneurysm by inducing the expression of MCP-1 in vascular smooth muscle cells. PG - 1117-23 LID - 10.1038/gt.2010.60 [doi] AB - Cerebral aneurysm (CA) rupture is one of the leading causes of stroke death. Recent experimental studies suggest that the pathophysiology of CA is closely associated with inflammation. A transcription factor, Ets-1, has been shown to regulate vascular inflammation and remodeling in a physiological and pathological condition. The expression and role of Ets-1 in CA development has been investigated in this study. Ets-1 was expressed and activated mainly in vascular smooth muscle cells (VSMCs) in both experimentally induced rat CAs and human CA walls by immunohistochemistry, western blotting and enzyme-linked mobility shift assay. The downstream target of Ets-1 in CA development was identified by chromatin immunoprecipitation (CHIP) analysis. CHIP analysis revealed that Ets-1 transactivated monocyte chemoattractant protein-1 (MCP-1) expression in CA walls. Treatment with ets decoy oligodeoxynucleotides resulted in the prevention of CA enlargement, upregulation of MCP-1 expression and increase in macrophage accumulation in CA walls. In conclusion, Ets-1 mediates MCP-1 expression in VSMCs in CA walls, thus promoting the progression of CAs. Inhibition of DNA-binding activity of Ets-1 may lead to the prevention of human CA enlargement and rupture. Results of this study will provide us a clue to a novel therapeutic strategy for CAs. FAU - Aoki, T AU - Aoki T AD - Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan. FAU - Kataoka, H AU - Kataoka H FAU - Nishimura, M AU - Nishimura M FAU - Ishibashi, R AU - Ishibashi R FAU - Morishita, R AU - Morishita R FAU - Miyamoto, S AU - Miyamoto S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100429 PL - England TA - Gene Ther JT - Gene therapy JID - 9421525 RN - 0 (Chemokine CCL2) RN - 0 (Proto-Oncogene Protein c-ets-1) SB - IM EIN - Gene Ther. 2013 Feb;20(2):235 MH - Animals MH - Chemokine CCL2/*genetics/metabolism MH - Chromatin Immunoprecipitation MH - Humans MH - Immunohistochemistry MH - Intracranial Aneurysm/*etiology/metabolism/pathology MH - Male MH - Muscle, Smooth, Vascular/cytology/*metabolism MH - Myocytes, Smooth Muscle/cytology/*metabolism MH - Proto-Oncogene Protein c-ets-1/*metabolism MH - Rats MH - Rats, Sprague-Dawley EDAT- 2010/04/30 06:00 MHDA- 2011/01/20 06:00 CRDT- 2010/04/30 06:00 PHST- 2010/04/30 06:00 [entrez] PHST- 2010/04/30 06:00 [pubmed] PHST- 2011/01/20 06:00 [medline] AID - gt201060 [pii] AID - 10.1038/gt.2010.60 [doi] PST - ppublish SO - Gene Ther. 2010 Sep;17(9):1117-23. doi: 10.1038/gt.2010.60. Epub 2010 Apr 29.