Document Detail


Fluorescent probes of tissue transglutaminase reveal its association with arterial stiffening.
MedLine Citation:
PMID:  21035737     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Tissue transglutaminase (TG2) catalyzes the crosslinking of proteins. TG2 has been implicated in fibrosis and vascular calcification, both of which lead to a common feature of aging known as arterial stiffness. In order to probe the role of TG2 in arterial rigidification, we have prepared a fluorescent irreversible inhibitor as a probe for TG2 activity (RhodB-PGG-K(Acr)-LPF-OH). This probe was synthesized on solid support, characterized kinetically (k(inact) = 0.68 min⁻¹, K(I) = 79 μM), and then used to stain the aorta from rats used as a model of isolated systolic hypertension (ISH). Interestingly, TG2 activity was thus shown to increase over 4 weeks of the hypertension model, corresponding with the previously observed increase in arterial stiffness. These results clearly suggest an association between TG2 and the phenomenon of arterial rigidification.
Authors:
Nicolas Chabot; Simon Moreau; Amina Mulani; Pierre Moreau; Jeffrey W Keillor
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemistry & biology     Volume:  17     ISSN:  1879-1301     ISO Abbreviation:  Chem. Biol.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-11-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9500160     Medline TA:  Chem Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1143-50     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC H3C3J7, Canada.
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Descriptor/Qualifier:
Grant Support
ID/Acronym/Agency:
//Canadian Institutes of Health Research

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