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Construction and characterization of recombinant adenylate cyclase toxoid of bacterium Bordetella pertussis carrying mycobacterial antigen TB7.7
Mikulecký, Pavel ; Staněk, Ondřej (advisor) ; Vopálenský, Václav (referee)
Bacterium Mycobacterium tuberculosis is an etiological agent of a deadly disease called tuberculosis that presents a global problem. According to The World Health Organization there are more than 2 billions people infected with latent tuberculosis all over the world. There is still need of specific, sensitive, quick and economic available method for identification of infected individuals. Currently in vitro blood tests are considered to be the best way of diagnosis. They are based on restimulation of specific T lymphocytes by mycobacterial antigens derived from virulent strains. There are several different approaches for enhancing of direct antigen delivery into antigen presenting cells and promising one is a genetically detoxified adenylate cyclase toxin (CyaA) of bacteria Bordetella pertussis. The main aim of the thesis includes construction and subsequent characterization of biological properties of CyaA protein carrying specific mycobacterial antigen TB7.7 in translocating domain. Here is shown that fusion protein CyaA-TB7.7 can form cation selective pores in target cell membranes and is able to deliver antigens into the cytosol of APC to be presented on surface with molecules MHC class II. Genetically detoxified CyaA- TB7.7 protein will be used to supplement current approaches such as also in vitro...

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