بهزادیان, فریدا
گروه ژنتیک مولکولی، مرکز تحقیقات علوم و فناوری زیستی، دانشگاه صنعتی مالک اشتر، تهران، ایران.
[ 1 ] - بیان ترشحی بخش کروی هماگلوتینین (HA1) ویروس آنفولانزای H5N1) A) در باسیلوس سوبتیلیس
زمینه و اهداف: ویروس H5N1 ممکن است قابلیت انتقال بین انسان ها را بدست آورد. بنابراین امکان وقوع یک بیماری همه گیر وجود دارد. پروتئین HA1 نقش اصلی را در اتصال ویروس به سلول هدف بازی می کند و پاسخ های آنتی بادی خنثی کننده عمدتاً علیه این ناحیه است. باسیلوس سوبتیلیس میزبانی بدون اندوتوکسین جهت بیان وترشح پروتئین های هترولوگ واجد فعالیت ایمونولوژیک شناخته شده است. اگر چه این باکتری قادر به تولید پ...
[ 2 ] - Construction of chimeric protein 3M2e.FliC and its immunoinformatics analyses and expression in Bacillus subtilis
Introduction: Influenza A virus causes unpredictable epidemics and pandemics by creating antigenic variations. With the appearance of each new strain, rapid emergency countermeasures are taken against this new strain. Hence, designing an applicable and cross protective strategy to counter this virus is of great importance. To achieve this, choosing conserved antigenic regions in influenza virus...
[ 3 ] - Polyclonal Antibody against Recombinant Nucleoprotein of the Influenza A Virus (H1N1); Production and Purification
Background and Aims: Influenza is an acute respiratory illness that is caused by a virus belonging to Orthomyxoviridae family. This virus spreads rapidly every year in cold season and leads to morbidities and mortalities especially in adults and children, which causes billions of dollars of economic losses. Accordingly, development of a rapid, sensitive and inexpensive laboratory diagnosis base...
[ 4 ] - Molecular Characterization and Phylogenetic Analysis of Neuraminidase Gene in A/H1N1 Influenza Virus Isolates Circulating in Iran, 2014-2015.
Objectives: Influenza is one of the most important emerging and reemerging infectious diseases in the world. The aim of this study is molecular and phylogenetic analyses of the variations in circulating influenza A/H1N1 virus isolates during 2014-2015 in Iran and investigate on the drug resistance conditions in the related Iranian isolates. Material and Methods: Throat samples from Iranian pat...
[ 5 ] - Bacillus subtilis as a Host for Recombinant Hemagglutinin Production of the Influenza A (H5N1) Virus
Abstract Background and Aims: Influenza A(H5N1) viruses circulating in animals might evolve and acquire the ability to spread from human to human and thus start a pandemic. Hemagglutinin (HA) has been shown to play a major role in binding of influenza virus to its target cell and the main neutralizing antibody responses elicit against this region. Recent studies have shown that...
[ 6 ] - Construction and Eukaryotic Expression of Recombinant Large Hepatitis Delta Antigen
Background: Hepatitis delta virus (HDV) is a subviral human pathogen that exploits host RNA editing activity to produce two essential forms of the sole viral protein, hepatitis delta antigen (HDAg). Editing at the amber/W site of HDV antigenomic RNA leads to the production of the large form (L-HDAg), which is required for RNA packaging. Methods: In this study, PCR-based site-directed mutagen...
[ 7 ] - Expression and Purification of Soluble form of Human Parathyroid Hormone (rhPTH1-34) by Trx Tag in E. coli
Background: Parathyroid Hormone (PTH) is secreted by parathyroid glands and controls the level of calcium in bones and kidney. PTH is a small polypeptide with 84 amino acids, but the first 34 amino acids of which are enough for hormone biological activity and can be used in the treatment of Osteoporosis. The expression efficiency of recombinant human parathyroid hormone rhPTH (1-34) or Teripara...
[ 8 ] - Site-Directed Mutagenesis in Human Granulocyte-colony Stimulating Factor, Cloning and Expression in Escherichia coli
Human granulocyte colony stimulating factor (hG-CSF) induces proliferation and differentiation of granulocyte progenitor cells. This glycoprotein is currently being used for treatment of neutropenia, in patients who have undergone bone marrow transplantation. So far, different researchers have tried to enhance hG-CSF biological activity and stability. In this study, Polymerase Chain Reaction (P...
[ 9 ] - Interferon Resistance of Hepatitis C Virus Genotypes 1a/1b: Relationship to Structural E2 Gene Quasispecies Mutations
Hepatitis C virus (HCV) envelope glycoprotein-2 (E2) inhibits the interferon (IFN)–induced, double –stranded RNA activated protein kinase (PKR) via PKR eukaryotic initiation factor-2α phosphorylation homology domain (PePHD). Present study examined the genetic variability of the PePHD in patients receiving interferon therapy. The PePHD region from HCV genotype 1a/1b infected patients receiving I...
[ 10 ] - Molecular and Phylogenetic Analysis and Protein Structural modeling of NS Gene of Human Influenza A Virus Subtype H1N1 Circulating in Iran 2015 & 2017
Abstract Background: The NS (non-structural) genomic segment of influenza A virus expresses two proteins (NS1 and NS2) which are responsible for the virulence and pathogenicity of virus. In this study we investigate the characterization and variability of the NS gene recovered from H1N1 influenza viruses isolated from Iranian patients during the 2017 seasonal outbreak and from high...
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