Background Human preimplantation embryonic cells share many similarities with cancer cells such as ability to self-renew, unlimited proliferation and maintenance of the undifferentiated state. Embryo-cancer sequence A (ECSA), also known as developmental pluripotency associated-2 (DPPA2), is a cancer testis antigen (CTA) with unclear biological function yet. Objective: CTAs are expressed normal...

conclusions this study can serve as a fundamental experiment for the construction of a ns3/ns4a eukaryotic expression vector and its expression in mammalian cells. further research is underway to evaluate the fragment immunogenicity in lab animal models. results the results showed that the fragment was successfully amplified and cloned into a eukaryotic expression vector. sequencing and enzyme ...

Background: Baculovirus expression system is one of the most attractive and powerful eukaryotic expression systems for the production of recombinant proteins. The presence of a biomarker is required to monitor transfection efficiency or protein expression levels in insect cells. Methods: The aim of this study was to construct a baculovirus expression vector encoding a copepod super green fluore...

Background: Interferons are some kind of natural cytokines which express in response to a variety of antigens including viral RNA, bacterial products, and tumor proteins. Interferon beta is used in the treatment of autoimmune diseases such as multiple sclerosis. Moreover, this drug inhibits cellular proliferation as well as angiogenesis and as a result, helps to cure cancer. In this research, i...

background: baculovirus expression system is one of the most attractive and powerful eukaryotic expression systems for the production of recombinant proteins. the presence of a biomarker is required to monitor transfection efficiency or protein expression levels in insect cells. methods: the aim of this study was to construct a baculovirus expression vector encoding a copepod super green fluore...

abstract         background and objective: hirudin is an anticoagulant polypeptide secreted from the salivary glands of leeches. recombinant hirudin is a strong anticoagulant agent in arterial and venous thrombosis. the aim of this study was to evaluate the effect of inserting protein a signal peptide sequence of pezz18 plasmid on expression and secretion of the recombinant hirudin in e.coli.  ...

background toxoplasmosis is an opportunistic protozoan infection with a high prevalence in a broad range of hosts infecting up to one-third of the world human population. toxoplasmosis leads to serious medical problems in immunocompromised individuals and fetuses and also induces abortion and mortality in domestic animals. therefore, there is a huge demand for the development of an effective va...

Brucella bacterium causes Brucellosis, an infectious disease spreading from animals to human. Brucella lumazine synthase (BLS) is a highly immunogenic protein with adjuvant properties, which has been introduced as an effective protein carrier for vaccine development. This protein also plays a significant role in inducing immune system. This study aimed to clone, express, and purify the BLS gene...

There are two different co-expression systems including bicistronic; dual-vector or two-promoter to express two different genes simultaneously and also to study protein-protein interactions. Bicistronic system has disadvantages e.g. compared with two-promoter system. In this paper, a simple method based on spliced overlap extension by polymerase chain reaction (SOE-PCR) technique was demonstrat...