background bovine viral diarrhea (bvd) is an economically important disease of cattle with a worldwide distribution. diagnosis of bvd relies on laboratory-based detections of its viral causing agent or virus specific antibodies. the most common laboratory method used for this purpose is the elisa. bovine viral diarrhea virus (bvdv) nonstructural protein 3 (ns3) is one of the most highly conserv...

Wen, L.-M., Xu, P., Benegal, G., Carvaho, M. R. C., Butler, D. R., and Buck, G. A. 2001. Trypanosoma cruzi: Exogenously regulated gene expression. Experimental Parasitology 97, 196–204. A regulated expression vector would provide a strong tool for the dissection of gene function in Trypanosoma cruzi. Herein, we establish a system in which genes in T. cruzi expression vectors can be exogenously ...

Multipotent mesenchymal stem cells (MSCs) can undergo self-renewal and give rise to multi-lineages under given differentiation cues. It is frequently desirable to achieve a stable and high level of transgene expression in MSCs in order to elucidate possible molecular mechanisms through which MSC self-renewal and lineage commitment are regulated. Retroviral or lentiviral vector-mediated gene exp...

background: leishmania major lmsti1 is a conserved protein among different species of leishmania, and expressed in both amastigote and promastigote forms of l. major life cycle. it has previously been expressed in bacterial systems. m aterials and methods: to express lmsti1 in the methylotrophic yeast         pichia pastoris ( p. pastoris ), the shuttle vector ppicza containing gene lmsti1 was ...

We examined whether herpes simplex virus thymidine kinase (HSV-TK) gene expression driven by the promoter of the vascular endothelial growth factor (VEGF) gene that is activated by hypoxia is effective in killing highly metastatic Lewis lung carcinoma A11 cells under hypoxic conditions. We isolated the promoter region encompassing the hypoxia response element (HRE) of the mouse VEGF gene. To as...

We examined whether herpes simplex virus thymidine kinase (HSVTK) gene expression driven by the promoter of the vascular endothelial growth factor (VEGF) gene that is activated by hypoxia is effective in killing highly metastatic Lewis lung carcinoma A11 cells under hypoxic conditions. We isolated the promoter region encompassing the hypoxia response element (HRE) of the mouse VEGF gene. To ass...

to evaluate the role of wild promoter of l-phenylalanine dehydrogenase (phedh) gene, referred to as pdh, from bacillus sphaericus in expression, cloning of pdh gene in bacillus subtilis was performed. the whole pdh gene was cloned in phy300plk shuttle vector and amplified, construct (phydh) then transformed in b. subtilis isw1214 and e. coli jm109. the pdh endogenous promoter presented no effec...

the biosynthetic pathways of saturated and unsaturated fatty acids consist of many steps controlled by various enzymes. one of the methods for improving oil quality is to change the fatty acid profile through genetic manipulation which requires isolation and characterization of the genes and other cis-acting elements, such as the promoter, involved in fatty acid biosynthesis. b-ketoacyl-coa syn...

In our previous study, we demonstrated that episomal vectors based on the characteristic sequence of matrix attachment regions (MARs) and containing the cytomegalovirus (CMV) promoter allow transgenes to be maintained episomally in Chinese hamster ovary (CHO) cells. However, the transgene expression was unstable and the number of copies was low. In this study, we focused on enhancers, various p...