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Related Experiment Video

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Conditional Knockdown of Gene Expression in Cancer Cell Lines to Study the Recruitment of Monocytes/Macrophages to the Tumor Microenvironment
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Published on: November 23, 2017

L-mimosine and dimethyloxaloylglycine decrease plasminogen activation in periodontal fibroblasts.

Christian Wehner1, Reinhard Gruber, Hermann Agis

  • 1Department of Oral Surgery, Medical University of Vienna, Vienna, Austria.

Journal of Periodontology
|July 6, 2013
PubMed
Summary
This summary is machine-generated.

Prolyl hydroxylase inhibitors, l-mimosine (L-MIM) and dimethyloxaloylglycine (DMOG), reduce plasminogen activation in periodontal fibroblasts. This finding is relevant for potential periodontal regeneration therapies.

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Area of Science:

  • Periodontal medicine
  • Tissue regeneration
  • Molecular biology

Background:

  • Prolyl hydroxylase inhibitors (PHIs) like L-mimosine (L-MIM) and dimethyloxaloylglycine (DMOG) are explored for enhancing angiogenesis in periodontal regeneration.
  • PHIs can influence the plasminogen activator system in non-oral cells.
  • This study investigates PHI effects on plasminogen activation in periodontal fibroblasts.

Purpose of the Study:

  • To assess the impact of L-MIM and DMOG on plasminogen activation by gingival and periodontal ligament fibroblasts.
  • To determine if PHIs modulate plasminogen activation under basal and inflammatory conditions.

Main Methods:

  • Fibroblast cultures (gingival and periodontal ligament) treated with L-MIM and DMOG.
  • Kinetic assays to measure net plasminogen activation, with and without IL-1 stimulation.
  • Analysis of plasminogen activators and inhibitors via casein zymography, immunoassays, and qPCR.

Main Results:

  • L-MIM and DMOG significantly reduced plasminogen activation in both basal and IL-1-stimulated conditions.
  • L-MIM decreased urokinase-type plasminogen activator (uPA) activity.
  • Reduced uPA levels and increased plasminogen activator inhibitor 1 (PAI-1) levels were observed.

Conclusions:

  • L-MIM and DMOG effectively reduce plasminogen activation in periodontal fibroblasts.
  • These effects occur under both normal and inflammatory conditions.
  • Findings suggest a potential role for PHIs in modulating the plasminogen system for periodontal applications.