Background: Dense granule antigens (GRA antigens) of Toxoplasma gondii induce strong antibody response in humans and are considered as useful diagnostic antigens. Previous studies reported expression of amino terminal GRA8 protein in fusion with large tags such as glutathione-S-transferase. The present study aimed to produce soluble full length immunogenic GRA8 in bacteria. Methods: GRA8 comple...

Objective(s): Hepatitis C is a major cause of liver failure worldwide. Current therapies applied for this disease are not fully effective and produce side effects in most cases. Non-structural protein 3 helicase (NS3) of HCV is one of the key enzymes in viral replication and infection. Therefore, this region is a promising target to design new drugs and therapies against HCV infection. The aim ...

Objective(s): Infection with Pseudomonas aeruginosa has been a long-standing obstacle for clinical therapy due to the complexity of the genetics and pathogenesis, as well for widespread resistance to antibiotics, thus attaching great importance to explore effective vaccines for prevention and treatment. This paper focuses on the introduction of novel Pseudomonas aeruginosa type IV pili (T4P)-ba...

objective(s): hepatitis c is a major cause of liver failure worldwide. current therapies applied for this disease are not fully effective and produce side effects in most cases. non-structural protein 3 helicase (ns3) of hcv is one of the key enzymes in viral replication and infection. therefore, this region is a promising target to design new drugs and therapies against hcv infection. the aim ...

background: enterocin-p of enterococcus faecium p13 (entp) is of great interest as a food preservative and medicine due to its non-toxicity and broad antimicrobial spectrum in various ph, as well as its excellent thermal stability. however, recombinant production of entp is still in laboratory because of low productivity and complex purification process. objectives: in this study, we aimed to d...

Objective(s):Human Cytomegalovirus (HCMV) remains a major morbidity and mortality cause in immuno suppressed patients. Therefore, significant effort has been made towards the development of a vaccine. In this study, the expression of the pp65 and gB fusion peptides and Fc domain of mouse IgG2a as a novel delivery system for selective uptake of antigens by antigen-presenting cells (APCs) in Pich...

objective(s) staphylococcus aureus is a leading cause of many nosocomial and community acquired infections. according to many reports, antibiotic therapy can not guarantee the eradication of s. aureus infections. thus designing an adhesin based vaccine could restrain the s. aureus infections. this study designed for construction of a new fusion protein vaccine against s. aureus infections based...

the use of organophosphorus hydrolase (oph) enzyme to degrade chemical warfare agents is one of the most frequently used decontamination methods. oph is a ~36 kda homodimeric metalloprotein that is found in the membrane of flavobacterium sp. strain atcc 27551 and brevundimonas diminuta mg and is capable of hydrolyzing a wide range of oxon and thion , such as paraoxon and parathion. oph gene ( o...

  With advent and development of DNA recombinant technology and advantages of p. pastoris expression system, fusion (F) protein of PPRV expression, because of effective immunodominant role could be an appropriate candidate for production of recombinant vaccine against PPR disease. In this study, F gene of PPRV Nigeria 75/1 strain (1637 bp) was amplified using RT-PCR and purified. It was then cl...

globally, brucella melitensis and b. abortus are the most common cause of human brucellosis. the outer membrane protein 31 (omp31) and l7/l12 are immunodominant and protective antigens conserved in human brucella pathogens which are considered as potential vaccine candidates. we aimed to design the fusion protein from brucella l7/l12 and truncated omp31proteins, in silico , clone the fusion in ...