Monoclonal antibody OKM5 and platelet alloantibody anti-Nak have the same specificity.

Effects of OKM5, a monoclonal antibody to glycoprotein IV, on platelet aggregation and thrombospondin surface expression.

The monoclonal antibody, OKM5, recognizes an 88-Kd monocyte membrane protein and also binds to the platelet membrane protein, GPIV (GPIIIb, CD36). In this study, we have found that the OKM5 target epitope is present at approximately 12,000 copies per platelet and that interaction with the antibody has both stimulatory and inhibitory effects on platelet function. In the absence of other stimuli,...

Localization of the Binding Regions of a Murine Monoclonal Anti - Factor VilI Antibody and a Human Anti - Factor Vil Alloantibody

We have localized the binding region of a previously described monoclonal anti-factor VIII (FVIII) inhibitory antibody (C5) to amino acid residues Thr351-Ser '5 ofthe thrombin-generated 54-kD fragment of the heavy chain of FVIII. Synthetic FVIII peptides were examined for the ability to competitively inhibit the binding of C5 to FVIII in an ELISA system. The synthetic FV1lI peptide Thr35'-Ser36...

A monoclonal anti-platelet antibody which recognizes p55 antigen.

A monoclonal antibody (MoAb) H229(IgGl) was obtained by fusion between SP2/0, mouse myeloma cell line and spleen cells from BC3Fl mice immunized with HEL, a erythroleukemia cell line. MoAb H229 precipitated a 55 kilodalton(KD) molecule in reduced condition. It reacted with platelets and megakaryocytes, but not with monocytes, granulocytes, lymphocytes, thymocytes, red blood cells (RBC), colony-...

Aggregation and Thrombospondin Surface Expression [see Comments] Effects of Okm5, a Monoclonal Antibody to Glycoprotein Iv, on Platelet

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Development of a Novel Inhibitory Chimeric Anti-HER2 Monoclonal Antibody