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Mechanisms of Viral
and Bacterial Pathogenesis
  IIBR is investigating viral and bacterial pathogenesis mechanisms in an attempt to design new strategies for vaccine and drug development, for the evaluation of novel modes of therapy as well as for diagnostic purposes.

The R&D approach comprises of classical microbiology methodologies, a vast array of molecular biology procedures, tissue culture and cytotoxic assays, immunological methods and in-vivo studies including:
 
 
  • Development of pathogen-specific in-vitro models of infection
  • Development of animal models for infection: different species, varying genetic backgrounds and well-characterized immune-deficient animal model systems
  • Development of attenuated pathogen strains, using powerful genetic methods for random mutagenesis and in-vivo selection (STM), or targeted mutagenesis in genes selected by bioinformatic methodologies, screening for new genes involved in pathogenesis
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  • Deciphering host-pathogen interactions with emphasis on the interplay between pathogen-macrophage and pathogen-nervous system (including blood-brain-barrier penetration). Analyses include dissection, at the molecular level, of extra and intra-cellular signaling pathways
  • Production of polyclonal hyperimmune antisera and monoclonal antibodies for neutralization of various components responsible for virulence
  • Evaluation of T-cell related immunity to infectious diseases using state of the art methodologies, including flow cytometry approaches
  • Generation of infectious RNA libraries to produce different viral recombinant products for assessment of their infectivity and immunoneutralization potencies in cells
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    Virus infected cells



    Macrophage engulfment of virulent or avirulent Y.pestis EV76 strains
    Apoptotic effect induced
    by microbial infection
     
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