A prodrug of cysteine, L-2-oxothiazolidine-4-carboxylic acid, regulates vascular permeability by reducing vascular endothelial growth factor expression in asthma

Kyung Sun Lee, Sun Park Hee, Ju Park Seoung, Ri Kim So, Hoon Min Kyung, Mi Jin Sun, Kwang Hyun Park, Uh Hyun Kim, Young Kim Chan, Chul Lee Yong

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Inflammation of the asthmatic airway is usually accompanied by increased vascular permeability and plasma exudation. Oxidative stress plays critical roles in airway inflammation. Although reactive oxygen species (ROS) are shown to cause vascular leakage, the mechanisms by which ROS induce increased vascular permeability are not clearly understood. We have used a murine model of asthma to evaluate the effect of L-2-oxothiazolidine-4-carboxylic acid (OTC), a prodrug of cysteine that acts as an antioxidant, more specifically in the increase of vascular permeability. These mice develop the following typical pathophysiological features of asthma in the lungs: increased numbers of inflammatory cells of the airways, airway hyper-responsiveness, increased vascular permeability, and increased levels of vascular endothelial growth factor (VEGF). Administration of OTC markedly reduced plasma extravasation and VEGF levels in allergen-induced asthmatic lungs. We also showed that at 72 h after ovalbumin inhalation, increased levels of hypoxia-inducible factor-1α (a transcriptional activator of VEGF) in nuclear protein extracts of lung tissues were decreased by the administration of OTC. These results indicate that OTC modulates vascular permeability by lowering VEGF expression.

Original languageEnglish
Pages (from-to)1281-1290
Number of pages10
JournalMolecular Pharmacology
Volume68
Issue number5
DOIs
Publication statusPublished - 2005 Nov
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology

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    Lee, K. S., Hee, S. P., Seoung, J. P., So, R. K., Kyung, H. M., Sun, M. J., Park, K. H., Kim, U. H., Chan, Y. K., & Yong, C. L. (2005). A prodrug of cysteine, L-2-oxothiazolidine-4-carboxylic acid, regulates vascular permeability by reducing vascular endothelial growth factor expression in asthma. Molecular Pharmacology, 68(5), 1281-1290. https://doi.org/10.1124/mol.105.016055