objective: development of high producing mammalian cell lines is a major bottleneck in manufacturing of recombinant therapeutic proteins. this study examines the effect of using the matrix attachment region from the human interferon beta gene in combination with promoter activation strategy with e1a 13s protein on human tissue plasminogen activator (t-pa) expression in chinese hamster ovary (ch...

human interferon β (inf-β) is a member of cytokines family which different studies have shown its immunomodulatory and antiviral activities. in this study an expression vector was designed and constructed for expression of human inf-β-1b either in shake flasks and bench top bioreactor. the designed vector was constructed based upon pet-25b(+) with t7 promoter. recombinant human beta interferon ...

results cloning and subcloning of the flic gene were confirmed by colony pcr, restriction enzymes digestion and dna sequencing of the recombinant plasmids pprime-flic and pvax-flic. the expression of flagellin protein in eukaryotic cells was approved by immunofluorescence assay (ifa), western blotting analysis and the reverse transcriptase polymerase chain reaction (rt-pcr) method. conclusions t...

Background: Mesenchymal stem cells (MSCs) are ideal cells for cell and gene therapy. However, the low survival of MSCs after transplantation has limited their applications. We aimed to evaluate the expression of cytoprotective genes including NQO1, TXNRD1, HO-1, GCLC following the over expression of Nrf2 in umbilical cord-derived MSCs (UC-MSCs). Methods: 3-5 passages of UC-MSCs were cultured. ...

Knowing the nucleotide sequence of the cholera toxin operon, we designed oligonucleotide primers for its-PCR amplification from local clinical isolates of V. cholerae. The resulting amplification product was cloned in a common pUC18 vector. Subsequently, a part of this operon encoding the cholera toxin Bsubunit (CTB) was reamplified and cloned between the BamH1 and EcoR1 sites of the same ...

SFL1 and SFl2 (SETH Four Like) genes are two members of SETH4 gene family in Arabidopsis thaliana expressed in saprophytic tissues. In this study, expression of SFL1 and SFL2 genes were studied using Gateway Cloning Technology. Primers were designed for PCR amplification of promoter region of SFL1 (900 bp) and SFL2 (930 bp) genes having attB1 recombination sites using Kod Hi Fi DNA polymerase e...

sfl1 and sfl2 (seth four like) genes are two members of seth4 gene family in arabidopsis thaliana expressed in saprophytic tissues. in this study, expression of sfl1 and sfl2 genes were studied using gateway cloning technology. primers were designed for pcr amplification of promoter region of sfl1 (900 bp) and sfl2 (930 bp) genes having attb1 recombination sites using kod hi fi dna polymerase e...

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: Corynebacterium glutamicum (C. glutamicum) is a potential host for the secretory production of the heterologous proteins. However, to this date few secretion-type gene expression systems in C. glutamicum have been developed, which limit applications of C. glutamicum in a secretory production of the heterologous proteins.Objectives: In this stu...

Human Interferon β (INF-β) is a member of cytokines family which different studies have shown its immunomodulatory and antiviral activities. In this study an expression vector was designed and constructed for expression of human INF-β-1b either in shake flasks and bench top bioreactor. The designed vector was constructed based upon pET-25b(+) with T7 promoter. Recombinant human beta interferon ...