Lumican: A new inhibitor of matrix metalloproteinase-14 activity

  • Pietraszek K
  • Chatron-Colliet A
  • Brézillon S
 et al. 
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We previously showed that lumican regulates MMP-14 expression. The aim of this study was to compare the effect of lumican and decorin on MMP-14 activity. In contrast to decorin, the glycosylated form of lumican was able to significantly decrease MMP-14 activity in B16F1 melanoma cells. Our results suggest that a direct interaction occurs between lumican and MMP-14. Lumican behaves as a competitive inhibitor which leads to a complete blocking of the activity of MMP-14. It binds to the catalytic domain of MMP-14 with moderate affinity (KD∼ 275 nM). Lumican may protect collagen against MMP-14 proteolysis, thus influencing cell-matrix interaction in tumor progression.

Author-supplied keywords

  • Decorin
  • Lumican
  • MMP-14
  • Small leucine-rich proteoglycan

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