Abstract:
Compositions and methods for utilizing spore systems for medicinal and industrial protein applications are provided. Compositions comprise spores that produce and/or display carbohydrates, proteins, and nucleic acids of interest. Such spores are useful as therapeutic or prophylactic agents or vaccines against a broad spectrum of immunogens and bacterial and viral pathogens. Additionally, spore systems are useful in production, packaging, delivery, and presentation of polypeptides and/or nucleic acids for industrial catalysts, medical applications, and diagnostic applications.
Abstract:
The present invention provides recombinant bacteria strains, such as Bacillus or Clostridium strains, lacking one or more genes commonly used for selecting recombinants (i.e., selection marker genes). More particularly, the present invention provides recombinant bacteria strains, containing one or more additional copies of its own gene or genes and/or one or more foreign genes artificially inserted in the host chromosomal DNA or extra-chromosomal DNA (e.g., a plasmid) without any selection marker gene or genes, such as an antibiotic resistance gene of any foreign origin. This allows for the introduction of the resultant recombinant Bacillus or Clostridium strain into the environment or into animals or humans without any contaminating selection marker gene. The recombinant strain, while lacking detrimental genes such as selection marker genes, may contain one or more desirable genes such as genes encoding insecticidal proteins or antigens for immunizing animals and humans. The present invention also provides methods for producing the recombinant bacterial strains.
Abstract:
The invention provides isolated nucleic acid and amino acid sequences for Bacillus thuringiensis (Bt) spore outer coat protein and exosporium protein genes fusion proteins containing such proteins. The invention further includes methods for using the genes to construct expression cassettes, expression vectors, and recombinant Bt strains that have exogenous proteins attached to their spores. The exogenous proteins attached to the surface of recombinant Bt spores may provide insecticidal, enzymatic, or antigenic activity. The invention also provides for compositions made from the recombinant Bt strains and methods for fermenting and using the recombinant Bt strains produced by the invention.
Abstract:
The present invention provides recombinant bacteria strains, such as Bacillus or Clostridium strains, lacking one or more genes commonly used for selecting recombinants (i.e., selection marker genes). More particularly, the present invention provides recombinant bacteria strains, containing one or more additional copies of its own gene or genes and/or one or more foreign genes artificially inserted in the host chromosomal DNA or extra-chromosomal DNA (e.g., a plasmid) without any selection marker gene or genes, such as an antibiotic resistance gene of any foreign origin. This allows for the introduction of the resultant recombinant Bacillus or Clostridium strain into the environment or into animals or humans without any contaminating selection marker gene. The recombinant strain, while lacking detrimental genes such as selection marker genes, may contain one or more desirable genes such as genes encoding insecticidal proteins or antigens for immunizing animals and humans. The present invention also provides methods for producing the recombinant bacterial strains.
Abstract:
Integrated systems and methods for diversity generation and screening are provided. The systems use common fluid and array handling components to provide nucleic acid diversification, transcription, translation, product screening and subsequent diversification reactions.
Abstract:
The invention provides isolated nucleic acid and amino acid sequences for Bacillus thuringiensis (Bt) spore outer coat protein and exosporium protein genes fusion proteins containing such proteins. The invention further includes methods for using the genes to construct expression cassettes, expression vectors, and recombinant Bt strains that have exogenous proteins attached to their spores. The exogenous proteins attached to the surface of recombinant Bt spores may provide insecticidal, enzymatic, or antigenic activity. The invention also provides for compositions made from the recombinant Bt strains and methods for fermenting and using the recombinant Bt strains produced by the invention.
Abstract:
Compositions and methods for utilizing spore systems for medicinal and industrial protein applications are provided. Compositions comprise spores that produce and/or display carbohydrates, proteins, and nucleic acids of interest. Such spores are useful as therapeutic or prophylactic agents or vaccines against a broad spectrum of immunogens and bacterial and viral pathogens. Additionally, spore systems are useful in production, packaging, delivery, and presentation of polypeptides and/or nucleic acids for industrial catalysts, medical applications, and diagnostic applications.