Identification, immunoaffinity purification and initial characterization of a novel 71 kD human decidua associated protein by use of specific monoclonal antibodies

This study is part of an ongoing attempt to identify and characterize proteins associated with the human decidual tissue. A novel decidual-associated glycoprotein with an apparent molecular weight of 71 kD named hDP71 (human decidual-protein 71), has been identified and purified by immunoaffinity technique using monoclonal antibodies. The monoclonal antibodies recognizing the hDP71 were raised against a partly purified preparation of decidual associated proteins, which was obtained by immunoabsorption of serum proteins from crude decidual extract. Although the hDP71 was copurified with another decidual-associated glycoprotein, the previously described hDP200 (Halperin et al., 1989), evidence is presented showing that the monoclonal antibodies described above are specific for hDP71.