ABSTRACT
<p><b>OBJECTIVE</b>To prepare rabbit anti-mouse zona pellucida 2 (mZP2) polyclonal antibodies and test their immunoactivity.</p><p><b>METHODS</b>Recombinant proteins of mZP2 expressed in Rosetta transformant was separated by SDS-PAGE, and the gel strips containing the recombinant mZP2 were cut out and emulsified to immunize New Zealand white rabbits. The antibody response of the antiserum was detected by ELISA, and the specificity of the antiserum was verified by immunohistochemical assay. The effect of the antiserum on the binding of oocytes with acrosomal reacted sperm was tested by sperm-egg binding assay.</p><p><b>RESULTS</b>ELISA results showed that the immunized rabbit produced anti-mZP2 antiserum. The antiserum reacted specifically with the zona pellucida of mouse ovarian sections. Sperm-egg binding assay showed that treatment of the oocytes with the anti-mZP2 antiserum caused decreased binding of zona pellucida with the acrosomal reacted sperm by 43.7%.</p><p><b>CONCLUSION</b>We obtained rabbit anti-mouse ZP2 polyclonal antibodies that can inhibit the binding of oocytes with acrosomal reacted sperm.</p>