Quantitation and characterization of human platelet glycoprotein IIIa by radioimmunoassay

Czeslaw S. Cierniewski, Stefan Niewiarowski, Diane Hershock, Boguslaw Rucinski, Alvin H. Schmaier

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Glycoprotein IIIa was quantitated in human platelets by radioimmunoassay using antisera specific to platelet membranes and purified glycoprotein IIIa. Glycoprotein IIIa and glycoprotein IIb were isolated from washed platelets by Triton X-114 extraction followed by preparative sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Radioiodinated glycoprotein IIIa was further purified by affinity chromatography on Lentil lectin-Sepharose 4B. Purified glycoprotein IIb showed little crossreactivity with 125I-labeled glycoprotein IIIa using the anti-platelet membrane or anti-glycoprotein IIIa antisera on a competition inhibition radioimmunoassay. The expression of glycoprotein IIIa epitopes were the same for the purified glycoprotein IIIa and glycoprotein IIIa in Triton X-100 solubilized platelets. A 66 kDa protein derived from glycoprotein IIIa by limited proteolysis of platelet membranes also expressed the same epitopes as intact glycoprotein IIIa. Solubilized platelets contained approximately 16 μg of total glycoprotein IIIa antigen per 109 cells. The level of glycoprotein IIIa determined by radioimmunoassay in one patient with Glanzmann's thrombasthenia amounted to 6.7% of normal and it was close to the values obtained by other methods.

Original languageEnglish (US)
Pages (from-to)216-224
Number of pages9
JournalBBA - General Subjects
Volume924
Issue number1
DOIs
StatePublished - Apr 16 1987

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Integrin beta3
Radioimmunoassay
Glycoproteins
Platelets
Blood Platelets
Membranes
Immune Sera
Epitopes
Thrombasthenia
Proteolysis
Platelet Glycoprotein GPIIb-IIIa Complex
Affinity chromatography
Octoxynol
Affinity Chromatography
Sodium Dodecyl Sulfate
Sepharose
Electrophoresis

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology

Cite this

Cierniewski, Czeslaw S. ; Niewiarowski, Stefan ; Hershock, Diane ; Rucinski, Boguslaw ; Schmaier, Alvin H. / Quantitation and characterization of human platelet glycoprotein IIIa by radioimmunoassay. In: BBA - General Subjects. 1987 ; Vol. 924, No. 1. pp. 216-224.
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Quantitation and characterization of human platelet glycoprotein IIIa by radioimmunoassay. / Cierniewski, Czeslaw S.; Niewiarowski, Stefan; Hershock, Diane; Rucinski, Boguslaw; Schmaier, Alvin H.

In: BBA - General Subjects, Vol. 924, No. 1, 16.04.1987, p. 216-224.

Research output: Contribution to journalArticle

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