Peptide aptamer for neutralizing the binding of platelet antigen specific antibodies and diagnostic and therapeutic applications containing the same

摘要

The present invention relates to a peptide aptamer which mimics particularly the human platelet antigene HPA-Ia epitope present on the platelet GPIIb/IIIa molecules and which is capable of neutralizing the binding of HPA-I a specific antibodies (anti-HPA-1 a). This peptide aptamer is advantageously used in a method for detecting and identifying HPA-I a specific antibodies in human serum, in a diagnostic kit for screening and identifying antibodies, in an immunoassay and a pharmaceutical composition.