Thromb Haemost 1990; 64(01): 041-046
DOI: 10.1055/s-0038-1647251
Original Article
Schattauer GmbH Stuttgart

Monoclonal Antibodies Specific for a Conformationally Altered State of Fibrinogen[*]

Authors

  • Concepcion Zamarron

    The Committee on Vascular Biology, Research lnstitute of Scripps Clinic, La Jolla, California, USA
  • Mark H Ginsberg

    The Committee on Vascular Biology, Research lnstitute of Scripps Clinic, La Jolla, California, USA
  • Edward F Plow

    The Committee on Vascular Biology, Research lnstitute of Scripps Clinic, La Jolla, California, USA
Further Information

Publication History

Received 10 January 1990

Accepted after revision 14 May 1990

Publication Date:
25 July 2018 (online)

Preview

Summary

Four monoclonal antibodies were selected by their ability to discriminate surface-bound from soluble fibrinogen. These antibodies reacted with insolubilized fibrinogen but not other immobilized proteins and their reaction with surface-bound fibrinogen was not diminished by a 100-fold excess of sotuble fibrinogen. The antibodies reacted with the same or spatially proximal epitopes, and the recognized epitope(s) resided within the gamma chain segment of the D domain of fibrinogen. Fab fragments of the antibodies inhibited fibrin polymerization in a dose dependent manner, suggesting that the epitope(s) was also exposed by the conversion of fibrinogen to fibrin. These data indicate that adsorption of fibrinogen onto a surface induces conformational changes and that similar changes are also evoked when fibrinogen is converted into fibrin.

Dedicated to Professor M. Verstraete on the occasion of his 65th birthday