Institute of Oncology, Lj. (OILJ)
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Priprava ekspresijske kasete z genom hTNF[alfa] za prehodno izražanje sesalskih celic : [magistrsko delo]Čegovnik Primožič, UrškaConsidering that cancer is essentially a genetic disease, different gene therapy strategies for cancer treatment have rapidly expanded in the past few years. Preliminary results are promising ... although it is likely that the methods for gene transfer will need further elaboration. Our aim was to creategenetically modified syngeneic tumor cells capable of hTNFalpha production and excretion. The hTNFalpha gene was selected due to the complex antitumor action of the hTNFalpha protein that has at least a direct cytotoxiceffect upon tumor cells, as well as indirect activity via stimulationof antitumor immunity. The first step in the creation of genetically modified tumor cells was a successful insertion of gene coding forhTNFalpha into the expression vector (creation of the expression cassette).The peDNA3 was selected as expression vector because of its high level and stable transient expression in eucaryotic cells. The vector pcDNA3 was amplified in E.coli and linearized with the restriction enzymes HindIII and EcoRI. Human TNFalpha gene was amplified by PCR, using the primers that contained restriction sites for the above-mentioned restriction enzymes. In addition, the amplified hTNFalpha gene was ligated into the vector pcDNA3 withthe overlapping ends. The constructed expression vector was transferred bychemical transformation into the E. coli cells where replication occurred. The plasmid was then isolated and analyzed by PCR, restriction enzymes and sequence determination. The PCR and restriction analyses, confirmed the presence of hTNFalpha gene in the plasmid, while the sequencing confirmed the real orientation of the gene and order of its nucleotides. The expression cassette was then transferred by receptor mediated gene transfer into the mouse melanoma B 16 cellsč the cell growth medium was daily collected and tested for the presence of excreted hTNFalpha protein. (Abstract truncated at 2000 characters).Type of material - master's thesisPublication and manufacture - Ljubljana : [U. Čegovnik], 2000Language - slovenianCOBISS.SI-ID - 2174996
Author
Čegovnik Primožič, Urška
Other authors
Novaković, Srdjan
Topics
Tumor cells, structured |
Gene expression |
Regulation, neoplastic |
Cancer vaccines |
Cloning, molecular |
Tumorske celice, kultura |
Gensko izražanje |
Kloniranje molekularno |
Genska terapija |
Metode |
genetika, biokemična
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Knjižnica N MGR ČEGOVNIK U Priprava 0000000054 IN: 0011775 Knjižnica N MGR ČEGOVNIK U Priprava 54 IN: 0011775 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Čegovnik Primožič, Urška | 18299 |
Novaković, Srdjan | 08007 |
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