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Related Experiment Videos

Interactions between galectin-3 and Mac-2-binding protein mediate cell-cell adhesion

H Inohara1, S Akahani, K Koths

  • 1Tumor Progression and Metastasis Program, Karmanos Cancer Institute, Wayne State University, Detroit, Michigan 48201, USA.

Cancer Research
|October 1, 1996
PubMed
Summary
This summary is machine-generated.

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This study shows Mac-2-binding protein interacts with galectin-3 on cell surfaces, causing cell aggregation. This interaction may contribute to tumor cell spread during metastasis.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Galectin-3 is a lectin involved in cell interactions.
  • Mac-2-binding protein (M2BP) is a newly identified ligand for galectin-3.

Purpose of the Study:

  • To characterize the interaction between galectin-3 and M2BP in whole cells.
  • To measure their relative expression levels.
  • To investigate the functional role of M2BP-galectin-3 interaction.

Main Methods:

  • Cell surface binding assays using A375 cells.
  • Carbohydrate inhibition studies.
  • Homotypic cell aggregation assays.
  • Northern blotting for gene expression analysis.

Main Results:

Related Experiment Videos

  • M2BP specifically binds to galectin-3 on A375 cell surfaces in a carbohydrate-dependent manner.
  • M2BP induces homotypic cell aggregation, inhibited by lactose and anti-galectin-3 antibodies.
  • Galectin-3 and M2BP exhibit distinct transcriptional regulation patterns.

Conclusions:

  • Provides direct evidence for M2BP function.
  • Suggests M2BP-galectin-3 interaction may facilitate tumor cell embolization in metastasis.