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MT1-MMP: a potent modifier of pericellular microenvironment

Yoshifumi Itoh1, Motoharu Seiki

  • 1Kennedy Institute of Rheumatology Division, Imperial College London, Hammersmith, London, United Kingdom.

Journal of Cellular Physiology
|May 28, 2005
PubMed

Insights

Matrix metalloproteinase MT1-MMP significantly impacts cell function and the microenvironment. Inhibiting its activity may offer new therapeutic strategies for diseases like cancer and rheumatoid arthritis.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Cellular functions are influenced by microenvironmental changes.
  • MT1-MMP (MMP-14) is a key enzyme in extracellular matrix (ECM) degradation.
  • MT1-MMP plays crucial roles in skeletal development, cancer invasion, and angiogenesis.

Purpose of the Study:

  • To elucidate the role of MT1-MMP in modulating the cellular microenvironment.
  • To understand the mechanisms by which MT1-MMP affects cell signaling and behavior.
  • To explore MT1-MMP functional activity as a therapeutic target.

Main Methods:

  • Analysis of MT1-MMP's function as a pericellular proteinase.
  • Investigation of MT1-MMP's involvement in ECM degradation, CD44/syndecan1 shedding, and ERK activation.
  • Examination of MT1-MMP regulation, including homo-oligomerization, localization, and internalization.

Main Results:

  • MT1-MMP promotes cell invasion and motility through ECM degradation and signaling pathway activation.
  • MT1-MMP activity is regulated by inhibitors and requires specific functional states (oligomerization, localization, internalization).
  • MT1-MMP significantly alters cellular behavior by modifying the microenvironment.

Conclusions:

  • MT1-MMP is a critical mediator of cellular microenvironment and behavior.
  • Targeting MT1-MMP's functional activity presents a potential therapeutic avenue.
  • Inhibition of MT1-MMP may be beneficial for treating MT1-MMP-mediated diseases like cancer and rheumatoid arthritis.

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