Related Experiment Video

Updated: Feb 7, 2026

Analysis of Cell Migration within a Three-dimensional Collagen Matrix
08:02

Analysis of Cell Migration within a Three-dimensional Collagen Matrix

Published on: October 5, 2014

24.3K

Targeting the D93 cryptic collagen epitope alters integrin α2β1-dependent cellular migration and collagen remodeling

Jordan N Miner1, Christopher L Emmerling1, Joshua D Hamilton1

  • 1University of Maine.

Research Square
|February 6, 2026
PubMed

Insights

Targeting cryptic collagen epitopes with monoclonal antibody D93 can reduce breast cancer cell migration. This antibody may inhibit integrin α2β1-dependent metastasis by remodeling the tumor extracellular matrix.

Area of Science:

  • Oncology
  • Biochemistry
  • Cell Biology

Background:

  • The tumor microenvironment, particularly the extracellular matrix (ECM), is a critical factor in breast cancer progression.
  • Collagen remodeling during cancer progression exposes cryptic epitopes, offering potential therapeutic targets.
  • Integrin α2β1 plays a role in cell adhesion and migration within the ECM.

Purpose of the Study:

  • To investigate the therapeutic potential of targeting the D93 cryptic collagen epitope in 3D breast cancer models.
  • To assess the effect of monoclonal antibody (mAb) D93 on cellular migration and collagen architecture.
  • To determine cell-line specific responses to mAb D93 treatment.

Main Methods:

  • Utilized 3D human metastatic breast cancer spheroids (MDA-MB-231 and MCF10CA1a/M4) embedded in collagen type I hydrogels.
  • Administered mAb D93 to spheroid cultures.
  • Employed two-photon microscopy to visualize collagen architecture and D93 epitope exposure.
  • Quantified cellular migration into the collagen matrix.

Main Results:

  • mAb D93 treatment reduced cellular migration into collagen type I hydrogels.
  • Breast cancer cells were observed to drive D93 epitope exposure and alter collagen fiber and fibril architecture.
  • Collagen remodeling differences were noted between MDA-MB-231 and M4 spheroid models.
  • Reduced cellular migration was more pronounced in M4 spheroid models, suggesting cell-line specificity.

Conclusions:

  • mAb D93 demonstrates potential in inhibiting breast cancer cell migration within the ECM.
  • The antibody's mechanism may involve targeting integrin α2β1-dependent pathways.
  • Findings highlight the cell-specific efficacy of targeting cryptic collagen epitopes in breast cancer therapy.
Keywords:
Breast cancerSecond Harmonic Generation (SHG) microscopycollagenintegrinmigrationspheroids

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