conclusions over-expression of the synthetic cpc/β protein in the bacterial system (escherichia coli bl-21) showed that e. coli can be used as a basis for further research to produce this desired protein in large quantities. results the sds-page analysis and dot blotting confirmed the production of recombinant c-pc/β in the bacterial expression system. over-expression of cpcb gene was optimized...

background: saccharomyces boulardii (s. boulardii) is the best known probiotic yeast. the genetic engineering of this probiotic strain requires the availability of appropriate mutants to accept various gene constructs carrying different selection markers. as the auxotrophy selection markers are under focus, we have generated a ura3 auxotroph mutant of s. boulardii for use in further genetic man...

visceral leishmaniasis (vl) is a zoonotic disease caused by leishmania species. dogs are considered to be the main reservoir of vl. a number of methods and antigen-based assays are used for the diagnosis of leishmaniasis. however, currently available methods are mainly based on direct examination of tissues for the presence of parasites, which is highly invasive. a variety of serological tests ...

background: because of high morbidity of the brucellosis in humans and the potential use of the microorganism as an agent of biologic warfare, protection of effective vaccines and specific diagnostic reagents become necessary to eradicate brucellosis. objective: in this study we aimed to investigate the cytokine responses and changes in peripheral blood lymphocyte subgroups of acute brucellosis...

background and objectives: some of the human papillomaviruses (hpvs) can infect genital tracts and are sometimes associated with anogenital tract cancers. hpvs induced cervical cancers through the expression of e6 and e7 genes by inactivating the tumor suppressor proteins. in this study, e6 and e7 genes were chosen in order to construct an expression vector which is able to express target prote...

background: infectious bursal disease virus (ibdv) causes a highly immunosuppressive disease in chickens and is a pathogen of major economic importance to the poultry industry worldwide. the vp2 protein is the major host-protective immunogen of ibdv and has been considered as a potential subunit vaccine against the disease. vp2 coding sequence was cloned in an inducible fungal vector and the pr...

conclusions: our data showed that the recombinant mature lysostaphin protein produced by pet32a vector in e. coli system was very efficient. results: pcr and sequencing results confirmed the successful cloning of the target gene into the vector. the expression of protein was induced by iptg and high concentration of the recombinant protein was obtained via the purification process by affinity-c...

background: cd52 is a small glycoprotein with a gpi anchor at its c-terminus. cd52 is expressed by normal and malignant t and b lymphocytes and monocytes. there are detectable amounts of soluble cd52 in plasma of patients with cll and could be used as a tumor marker. although the biological function of cd52 is unknown but it seems that cd52 may be involved in migration and activation of t-cells...

background: various prokaryotic and eukaryotic expression systems have been developed for the production of recombinant proteins. in the present study, we used a new protein expression system based on the iranian lizard leishmania, a trypanosomatid protozoan as a host, for the expression of lpg3 gene from leishmania infantum (l.infantum). methods: the lpg3 gene was cloned in the expression cass...

background: the optimization of bioprocess conditions towards improved growth profile and productivity yield is considered of great importance in biopharmaceutical manufacturing. peptones as efficient sources of nutrients have been studied for their effect on media development however, their role on metabolic pathway is not well understood. methods: in the present study, the effect of different...