VP2 gene coding region of a vaccinal strain (D78) of infectious bursal disease virus (IBDV) was clonedin a eukaryotic expression vector, pSec Tag2A. The gene was placed downstream of Ig κ chain leadersequence, under the control of human cytomegalovirus (hCMV) immediate early enhancer and promoter. Theconstruct pSec Tag2A-VP2 was transfected in COS-7 cell line and the expression and secretion of...

Leishmaniasis is a major infectious disease of considerable public health in more than 86 countries around the world. Several approaches toward vaccine development against this disease have been taken. Glycoprotein (gp63) is conserved among diverse species of Leishmania and has induced immunological responses in murine models. Therefore, this glycoprotein has been considered as a second generat...

introduction: the development of an effective vaccine against hepatitis c virus (hcv) is still a target of intensive vaccine research. the hcv envelope proteins e1 and e2 which can induce broadly neutralizing antibodies are the major candidate for this purpose. different types of expression systems have been used to express these glycoproteins. in this study, an expression system using pichia p...

toxoplasmosis is a common and widespread infection in humans and many other species of warm–blooded animals. toxoplasma gondii-derived heat shock protein 70 (hsp70) may play an important role in the virulence of toxoplasma gondii (t. gondii). in the present study, t. gondii hsp70 was amplified by polymerase chain reaction (pcr) from the dna of the t. gondiitachyzoite rh strain through the use o...

Background: The potential of plants, as a safe and eukaryotic system, is considered in the production of recombinant therapeutic human protein today; but the expression level of heterologous proteins is limited by the post-transcriptional gene silencing (PTGS) response in this new technology. The use of viral suppressors of gene silencing can prevent PTGS and improve transient expression level ...