PMID- 21763782 OWN - NLM STAT- MEDLINE DCOM- 20130501 LR - 20211203 IS - 1879-3649 (Electronic) IS - 1537-1891 (Linking) VI - 55 IP - 5-6 DP - 2011 Nov-Dec TI - Trichostatin A prevents neointimal hyperplasia via activation of Kruppel like factor 4. PG - 127-34 LID - 10.1016/j.vph.2011.07.001 [doi] AB - The proliferation of vascular smooth muscle cells (VSMCs) is an integral part of the mechanism of vascular diseases such as restenosis. Post-translational modifications by histone deacetylase (HDAC) inhibitors play an important role in the regulation of gene expression by inducing cell cycle arrest. However, the role and mechanism of the HDAC inhibitor trichostatin A (TSA) on neointimal proliferation remain unknown. In this study, we investigated the effect and mechanism whereby TSA prevents the proliferation of VSMCs and neointimal hyperplasia induced by balloon injury in rat carotid artery. Local administration of TSA significantly prevented neointimal hyperplasia. TSA dramatically inhibited the proliferation and DNA synthesis of VSMCs in response to FBS or PDGF-BB. Overexpression of Kruppel like factor 4 (KLF4) blocked the cell proliferation and DNA synthesis, as determined by the MTT and [(3)H]thymidine incorporation assays, whereas knockdown of KLF4 resulted in an increase in VSMC proliferation. In VSMCs, TSA increased the mRNA level and protein expression of KLF4. Treatment with TSA or transfection of KLF4 increased the expression of both p21 and p27 and promoter activity. In addition, the anti-proliferative activity of TSA was recovered in KLF4-knockdown cells. These data demonstrate that TSA inhibits neointimal thickening and VSMC proliferation via activation of the KLF4/p21/p27 signaling pathway. CI - Copyright (c) 2011 Elsevier Inc. All rights reserved. FAU - Kee, Hae Jin AU - Kee HJ AD - Department of Pharmacology and Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea. sshjkee@empas.com FAU - Kwon, Jin-Sook AU - Kwon JS FAU - Shin, Sera AU - Shin S FAU - Ahn, Youngkeun AU - Ahn Y FAU - Jeong, Myung Ho AU - Jeong MH FAU - Kook, Hyun AU - Kook H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110713 PL - United States TA - Vascul Pharmacol JT - Vascular pharmacology JID - 101130615 RN - 0 (Cyclin-Dependent Kinase Inhibitor Proteins) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (Hydroxamic Acids) RN - 0 (Klf4 protein, rat) RN - 0 (Kruppel-Like Factor 4) RN - 0 (Kruppel-Like Transcription Factors) RN - 0 (Recombinant Proteins) RN - 3X2S926L3Z (trichostatin A) SB - IM MH - Animals MH - Aorta, Thoracic/cytology/drug effects/metabolism MH - Carotid Artery Diseases/*drug therapy/metabolism/pathology MH - Cell Line MH - Cell Proliferation/drug effects MH - Cells, Cultured MH - Cyclin-Dependent Kinase Inhibitor Proteins/antagonists & inhibitors/genetics/metabolism MH - Gene Silencing MH - Histone Deacetylase Inhibitors/pharmacology/*therapeutic use MH - Hydroxamic Acids/pharmacology/*therapeutic use MH - Hyperplasia MH - Kruppel-Like Factor 4 MH - Kruppel-Like Transcription Factors/antagonists & inhibitors/genetics/*metabolism MH - Male MH - Muscle, Smooth, Vascular/cytology/drug effects/metabolism MH - Promoter Regions, Genetic/drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Recombinant Proteins/antagonists & inhibitors/metabolism MH - Tunica Intima/*drug effects/metabolism/pathology MH - Up-Regulation/*drug effects EDAT- 2011/07/19 06:00 MHDA- 2013/05/02 06:00 CRDT- 2011/07/19 06:00 PHST- 2011/01/10 00:00 [received] PHST- 2011/06/28 00:00 [revised] PHST- 2011/07/02 00:00 [accepted] PHST- 2011/07/19 06:00 [entrez] PHST- 2011/07/19 06:00 [pubmed] PHST- 2013/05/02 06:00 [medline] AID - S1537-1891(11)00067-X [pii] AID - 10.1016/j.vph.2011.07.001 [doi] PST - ppublish SO - Vascul Pharmacol. 2011 Nov-Dec;55(5-6):127-34. doi: 10.1016/j.vph.2011.07.001. Epub 2011 Jul 13.