از پلاسماي مني انسان CD95 تعيين و جداسازي پروتيين

Detection and Isolation of CD59 from Human Seminal Plasma

Introduction. CD59 is one of the complement regulatory proteins (CRPs) which exert inhibitory function by blocking the formation of C5b-9 complex or Membrane Attacks complex (MAC). Regarding the therapeutic role of CD59 in treatment of pathological effects in uncontrolled activation of complements system and its efficiency to overcome the hyper-acute rejection, CD59 was suggested for maintenance of transplanted organ. In this study we determined and isolated CD59 from seminal plasma. Methods. Six normospermic sample according to WHO standards were chosen. Plasma of samples was separated and to remove the postasomes, the seminal plama was ultracentrifuged. CD59 was detected by Dot-Blot using CD59 mAb (MEM43). The molecular weight and purity of protein was detected by SDS-PAGE method follwed by Westerm Blot. Results. Protein was present in the 6.5 ml and 15ml of gel titration fractions. Molecular weight based on marker size in these two fractions was 65 and 21 KD respectively. Discussion. CD59 had previously beem purified by lysis of erythrocyte cell membrane. Because of use of detergent and preservative agents, this method decreased physiologic effects of the protein. in this study the isolation was performed from prostasome granules without using of any detergent and preservative agents.