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The other side of MMPs: protective roles in tumor progression

Michelle D Martin1, Lynn M Matrisian

  • 1Department of Cancer Biology, Vanderbilt University, 771 Preston Research Building, 23rd and Pierce Avenues, Nashville, TN 37232-6840, USA.

Cancer Metastasis Reviews
|August 25, 2007
PubMed

Insights

Matrix metalloproteinases (MMPs) can promote or inhibit cancer progression. Understanding both pro- and anti-tumorigenic effects of specific MMPs is crucial for developing effective cancer therapies.

Area of Science:

  • Oncology
  • Biochemistry
  • Molecular Biology

Background:

  • Matrix metalloproteinases (MMPs) are extracellular proteinases that degrade the extracellular matrix (ECM).
  • Historically, MMPs have been linked to cancer invasion and metastasis.
  • Overexpression of MMPs was generally considered pro-tumorigenic, leading to the development of MMP inhibitors for cancer treatment.

Purpose of the Study:

  • To review evidence of protective effects of MMPs in cancer progression.
  • To contrast these beneficial roles with the known pro-tumorigenic effects of MMPs.
  • To explore the implications for cancer therapy and the failure of broad-spectrum MMP inhibitors.

Main Methods:

  • Literature review of studies investigating MMP roles in cancer.
  • Comparative analysis of pro- and anti-tumorigenic functions of specific MMPs.
  • Synthesis of findings to understand the dual role of MMPs in cancer.

Main Results:

  • Evidence suggests certain MMPs can exert protective effects in various cancer stages.
  • The same or different MMPs can exhibit opposing roles (pro- vs. anti-tumorigenic).
  • This duality may explain the disappointing outcomes of clinical trials with general MMP inhibitors.

Conclusions:

  • Targeting specific MMPs, rather than broad inhibition, is necessary for effective cancer treatment.
  • A comprehensive understanding of both pro- and anti-tumorigenic MMP functions is required.
  • Further research is needed to elucidate the complex roles of MMPs in cancer progression and therapy.

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