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:: Volume 3, Issue 1 (Spring 2006) ::
Sci J Iran Blood Transfus Organ 2006, 3(1): 29-36 Back to browse issues page
Evaluation of the effect of antihuman plasminogen monoclonal antibodies of A4D10, A5E10 and A3B2 on the activation of fibrinolytic system
A Maleki , M Mirshahi , A.A Pourfathollah
Abstract:   (14340 Views)

 Abstract

  

  Background and Objectives

 The most important component of fibrinolytic system is the proenzyme plasminogen that through various activators is converted to its active form plasmin and performs its vital functions that is fibrin clot lysis. The first anti human plasminogen antibody was prepared by Ploplis in 1982 and its effect was studied. Since then many researchers have attempted to prepare and study anti plasminogen antibodies to elucidate important aspects of structure and activation mechanism of plasminogen , physiologic condition of fibrinolysis, etc. In the present study, we studied the probable effects of three antihuman plasminogen monoclonal antibodies A4D10, A5E10 and A2C8 on the activation of the fibrinolytic system.

 

  Materials and Methods

  After separate steps like the culture of antibody-producing hybridoma cells, their injection to mice, extraction of the ascites fluid and purification of antibodies were taken, various methods such as optical evaluation of plasma clot lysis in the presence of antibodies, quantitative measurement of DD/E in D-dimer assay, evaluation with ELIZA assay using S-2251 synthetic substrate lysis and the like were used to study the effects of thses antibodies.

 

  Results

  Primary observations with human pooled plasma showed that in the presence of plasminogen activators (t-PA, u-PA and SK), A5E10 and A4D10 can enhance activation of fibrinolytic system, but A3B2 has no effect on this system. According to D- dimer assay, it was shown that the lytic effects of A5E10 and A4D10 antibodies were dose dependent the higher the amount of antibodies, the lower their effects. The other test performed with S-2251 synthetic substrate showed plasminogen activation in the presence of Urokinase therefore, lysis of this substrate enhanced in the presence of A5E10 and A4D10 antibodies. Moreover, in this test ineffectiveness of A3B2 on plasminogen activation was confirmed .

  

  Conclusions

  In conclusion, we suggested A4D10 and A5E10 antibodies by modification of structural from of plasminogen facilitate its activation in presence of plasminogen activators.

 

  Key words : Fibrinolytic, Plasminogen, Monoclonal antibody, Plasminogen activators 

Keywords: Fibrinolytic, Plasminogen, Monoclonal antibody, Plasminogen activators
Full-Text [PDF 273 kb]   (2369 Downloads)    
Type of Study: Research | Subject: General
Published: 2014/08/18
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Maleki A, Mirshahi M, Pourfathollah A. Evaluation of the effect of antihuman plasminogen monoclonal antibodies of A4D10, A5E10 and A3B2 on the activation of fibrinolytic system. Sci J Iran Blood Transfus Organ 2006; 3 (1) :29-36
URL: http://bloodjournal.ir/article-1-65-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 3, Issue 1 (Spring 2006) Back to browse issues page
فصلنامه پژوهشی خون Scientific Journal of Iran Blood Transfus Organ
The Scientific Journal of Iranian Blood Transfusion Organization - Copyright 2006 by IBTO
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