Thymosin beta 4 sulfoxide is an anti-inflammatory agent generated by monocytes in the presence of glucocorticoids

Young, J. D., Lawrence, A. J., MacLean, A. G., Leung, B. P., McInnes, I. B., Canas, B., Pappin, D. J., Stevenson, R. D. (December 1999) Thymosin beta 4 sulfoxide is an anti-inflammatory agent generated by monocytes in the presence of glucocorticoids. Nature Medicine, 5 (12). pp. 1424-7. ISSN 1078-8956 (Print)1078-8956 (Linking)

URL: http://www.ncbi.nlm.nih.gov/pubmed/10581087
DOI: 10.1038/71002

Abstract

The possibility that glucocorticoids upregulate the expression of anti-inflammatory mediators is an exciting prospect for therapy in inflammatory diseases, because these molecules could give the therapeutic benefits of steroids without toxic side effects. Supernatants from monocytes and macrophages cultured in the presence of glucocorticoids increase the dispersion of neutrophils from a cell pellet in the capillary tube migration assay. This supernatant factor, unlike other neutrophil agonists, promotes dispersive locomotion of neutrophils at uniform concentration, lowers their adhesion to endothelial cells, inhibits their chemotactic response to fMLP and induces distinctive morphological changes. Here we show that thymosin beta4 sulfoxide is generated by monocytes in the presence of glucocorticoids and acts as a signal to inhibit an inflammatory response. In vitro, thymosin beta4 sulfoxide inhibited neutrophil chemotaxis, and in vivo, the oxidized peptide, but not the native form, was a potent inhibitor of carrageenin-induced edema in the mouse paw. Thymosin beta4 is unique, because oxidation attenuates its intracellular G-actin sequestering activity, but greatly enhances its extracellular signaling properties. This description of methionine oxidation conferring extracellular function on a cytosolic protein may have far-reaching implications for future strategies of anti-inflammatory therapy.

Item Type: Paper
Additional Information: Young, J D Lawrence, A J MacLean, A G Leung, B P McInnes, I B Canas, B Pappin, D J Stevenson, R D Wellcome Trust/United Kingdom Research Support, Non-U.S. Gov't United states Nature medicine Nat Med. 1999 Dec;5(12):1424-7.
Uncontrolled Keywords: Amino Acid Sequence Animals Anti-Inflammatory Agents, Non-Steroidal/chemistry/ metabolism/pharmacology Carrageenan/toxicity Cattle Chemotaxis, Leukocyte/drug effects Edema/chemically induced/prevention & control Glucocorticoids/ pharmacology Humans Methionine/chemistry Mice Mice, Inbred BALB C Molecular Sequence Data Monocytes/ drug effects/ metabolism Neutrophils/drug effects/physiology Oxidation-Reduction Thymosin/ biosynthesis/chemistry/genetics
Subjects: bioinformatics > genomics and proteomics > design > amino acid design
diseases & disorders
therapies
CSHL Authors:
Communities: CSHL labs > Pappin lab
Depositing User: Kathleen Darby
Date: December 1999
Date Deposited: 23 Apr 2014 15:18
Last Modified: 23 Apr 2014 15:18
Related URLs:
URI: http://repository.cshl.edu/id/eprint/29854

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