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Related Concept Videos

Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...

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Related Experiment Video

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An Orthotopic Murine Model of Human Prostate Cancer Metastasis
06:48

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Published on: September 18, 2013

Human metastatic prostate PC3 cell lines degrade bone using matrix metalloproteinases.

O H Sanchez-Sweatman1, F W Orr, G Singh

  • 1Hamilton Regional Cancer Centre, McMaster University, Hamilton, Canada.

Invasion & Metastasis
|March 24, 2000
PubMed
Summary

Prostate cancer cells can directly break down bone tissue, contributing to fractures. Matrix metalloproteinases play a key role in this bone degradation process.

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Area of Science:

  • Oncology
  • Biochemistry
  • Cell Biology

Background:

  • Bone metastases are common in advanced cancers, leading to osteolysis and pathological fractures.
  • Metastatic cancer cells' ability to degrade bone matrix is crucial for skeletal invasion and destruction.

Purpose of the Study:

  • To investigate if human prostate cancer cells (PC3) can directly degrade non-mineralized and mineralized bone.
  • To elucidate the role of matrix metalloproteinases (MMPs) in this bone degradation process.

Main Methods:

  • Utilized prostate adenocarcinoma cell line PC3, established from skeletal metastases.
  • Assessed degradation of non-mineralized extracellular matrices and mineralized bone slices.
  • Measured calcium-45 release and resorption pit formation on bone.
  • Investigated the effect of transforming growth factor-beta(1) and MMPs.

Main Results:

  • PC3 cells and their conditioned medium degraded non-mineralized osteoid-like matrices.
  • PC3 cells induced calcium release and formed resorption pits on mineralized bone.
  • Matrix degradation was enhanced by transforming growth factor-beta(1).
  • Matrix metalloproteinases were implicated through TPA stimulation, inhibition by 1,10-phenanthroline, and type I collagen degradation.

Conclusions:

  • Human prostate cancer cells possess the capability to directly degrade bone-related matrices.
  • Matrix metalloproteinases are significantly involved in the bone degradation mediated by prostate cancer cells.