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Epitope-specific antibodies to the beta(1C) integrin cytoplasmic domain variant

M Fornaro1, M Lovecchio, P Jose

  • 1Department of Pathology, Yale University School of Medicine, New Haven, Connecticut 06520, USA.

Experimental and Molecular Pathology
|June 22, 2001
PubMed

Insights

Researchers developed specific monoclonal antibodies targeting the beta(1C) integrin cytoplasmic domain. These antibodies are crucial tools for studying beta(1C) integrin

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Immunology

Background:

  • The beta(1C) integrin, an alternatively spliced variant of beta(1) integrin, possesses a unique cytoplasmic domain sequence.
  • Beta(1C) integrin inhibits cell proliferation and is downregulated in prostate and breast carcinomas.

Purpose of the Study:

  • To generate and characterize specific monoclonal antibodies against the beta(1C) integrin cytoplasmic domain.
  • To provide novel tools for investigating the functional roles of beta(1C) integrin in cell proliferation and cancer.

Main Methods:

  • Development of a panel of monoclonal antibodies.
  • Immunoblot analysis using glutathione S-transferase fusion proteins.
  • Competition studies with beta(1C)-specific synthetic peptides.
  • Enzyme-linked immunosorbent assays (ELISAs).

Main Results:

  • Newly generated monoclonal antibodies specifically recognize the beta(1C) cytoplasmic domain.
  • Antibody specificity confirmed by immunoblotting and competition assays.
  • The epitope is localized to the Q(795)-F(804) sequence within the beta(1C) cytoplasmic domain, overlapping a key proliferation inhibitory region.

Conclusions:

  • These are the first reported monoclonal antibodies specific for a beta(1) cytoplasmic integrin isoform.
  • The developed antibodies are valuable reagents for dissecting functional differences among beta(1) integrin variants.
  • These antibodies will facilitate research into the role of beta(1C) integrin in prostate and breast epithelial cell proliferation.

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