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Regulation of matrix biology by matrix metalloproteinases

Joni D Mott1, Zena Werb

  • 1Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. JDMott@lbl.gov

Current Opinion in Cell Biology
|September 15, 2004
PubMed

Insights

Matrix metalloproteinases (MMPs) are enzymes that not only degrade extracellular matrix but also release bioactive fragments. This newly understood function of MMPs significantly influences cellular behavior in various biological processes.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Matrix metalloproteinases (MMPs) are enzymes traditionally known for degrading extracellular matrix (ECM).
  • Their role in physiological processes like growth, development, and wound healing, as well as in pathologies such as arthritis and cancer, is well-established.
  • Previous understanding focused solely on ECM degradation as their primary function.

Purpose of the Study:

  • To elucidate the multifaceted roles of MMPs beyond simple ECM degradation.
  • To highlight the significance of MMPs in releasing bioactive fragments and influencing cellular behavior.
  • To emphasize MMPs as key players in understanding matrix biology.

Main Methods:

  • Analysis of MMP enzymatic activity.
  • Investigation of ECM component cleavage by MMPs.
  • Assessment of released fragment bioactivity and impact on cellular behavior.

Main Results:

  • MMPs precisely cleave ECM components and associated molecules.
  • This cleavage releases bioactive fragments and growth factors.
  • MMP activity alters ECM architecture, thereby influencing cellular behavior.

Conclusions:

  • MMP activity is highly directed, involving more than just ECM degradation.
  • MMPs release cryptic information from the ECM through precise cleavage.
  • Understanding these complex MMP functions is crucial for advancing matrix biology.

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