Document Detail


Upstream stimulating factor-1 mediates the E-box-dependent transcriptional repression of the plasminogen activator inhibitor-1 gene in human mast cells.
MedLine Citation:
PMID:  17765897     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Plasminogen activator inhibitor (PAI)-1 promotes development of asthma. PAI-1 mRNA and protein are markedly induced in activated mast cells (MCs), a major effector cell type in asthma. However, regulatory mechanisms of PAI-1 transcription in MCs are unknown. We present first evidence that PAI-1 is transcriptionally regulated in human MCs (hMCs). In addition to three enhancer regions, we demonstrated that the E-box at -566 bp to -561 bp is the negative regulatory element, and the specific and constitutive binding of the upstream stimulating factor-1 to this E-box is the key mechanism of the negative regulation of PAI-1 expression in hMCs.
Authors:
Zhongcai Ma; BongSook Jhun; Chad K Oh
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Publication Detail:
Type:  Journal Article     Date:  2007-08-27
Journal Detail:
Title:  FEBS letters     Volume:  581     ISSN:  0014-5793     ISO Abbreviation:  FEBS Lett.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-11     Completed Date:  2008-01-07     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  4485-90     Citation Subset:  IM    
Affiliation:
University of California, Los Angeles, UCLA School of Medicine, Division of Allergy and Immunology, Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, CA 90502, United States.
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MeSH Terms
Descriptor/Qualifier:
Cell Line
E-Box Elements / genetics*
Electrophoretic Mobility Shift Assay
Humans
Ionomycin / pharmacology
Luciferases / genetics,  metabolism
Mast Cells / cytology,  drug effects,  metabolism*
Mutagenesis, Site-Directed
Phosphorylation
Plasminogen Activator Inhibitor 1 / genetics*,  metabolism
Promoter Regions, Genetic / genetics
Protein Binding
Recombinant Fusion Proteins / genetics,  metabolism
Transcription, Genetic / drug effects
Transfection
Upstream Stimulatory Factors / genetics*,  metabolism
Chemical
Reg. No./Substance:
0/Plasminogen Activator Inhibitor 1; 0/Recombinant Fusion Proteins; 0/Upstream Stimulatory Factors; 56092-81-0/Ionomycin; EC 1.13.12.-/Luciferases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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