摘要:
Hyperblebbing Shigella strains are generated by disrupting one or more components of the Tol-Pal system. The blebs from these strains are useful immunogens for vaccination. The individual proteins found in these blebs can also be used as immunogens.
摘要:
The present invention relates to Salmonella typhi Ty21a a comprising core-linked Shigella dysenteriae type 1 O-specific polysaccharide (O-Ps) and DNA encoding O antigen biosynthesis, said DNA selected from the group consisting of: a) the DNA sequence set out in any one of SEQ ID NOs: 1 and 2; b) DNA encoding S. dysenteriae serotype 1 biosynthesis polypeptides encoded by any one of SEQ ID NOs: 1 and 2; c) DNA encoding variants of the polypeptide encoded by the DNA of (a) or (b), wherein the variants comprise O antigen biosynthesis polypeptide analogs, wherein one or more of the specified amino acids is deleted or replaced, or wherein one or more non-specified amino acids are added without loss of biosynthesis of Shigella dysenteriae serotype 1 O antigen or protective immunological activity of the O antigen biosynthesis gene product; and d) nucleic acid molecules encoding gene products that share at least about 90% sequence identity with the polypeptide encoded by the nucleic acid molecule of SEQ ID NO: 1 or 2.
摘要:
The present invention provides an agent for controlling colibacillosis including a fusion protein comprising a subunit of Shiga toxin and a subunit of Escherichia coli heat-labile toxin.
摘要:
Methods for selecting and identifying modified toxins and conjugates thereof are provided. The methods are select for toxins that exhibit reduced toxicity to the host cell in which they are expressed. Methods of increasing production of toxins, such as the modified toxins, or conjugates thereof, also are provided. In particular, in the methods the toxins, or conjugates thereof, are produced in the presence of an inhibitor molecule. Also provided, are modified toxins and conjugates thereof. Such conjugates can be used in the treatment of various disease or disorders associated with proliferation, migration, and physiological activity of cells involved in immune or inflammatory responses.
摘要:
This invention discloses immunostimulatory combinations of Tumor Necrosis Factor Receptor Superfamily (TNFRSF) agonists, Toll-Like Receptor (TLR) agonists, "domain present in NA IP, C IITA, H ET-E, T P-1(NACHT)- L eucine R ich R epeat (LRR)" or "NLR" agonists, RIG-I-Like Helicase or "RLH" agonists, purinergic receptor agonists and cytokine/chemokine receptor agonists, together with delivery methods. The combinations, when used alone at the site of pathology, provide immunostimulation that induces host humoral and cellular immunologic responses to eliminate pathogens or neoplasms. Alternatively, when the combinations are used with a defined antigens, these combinations can induce focused humoral and cellular immunologic responses useful as prophylactic and/or ameliorative therapeutic modalities for infections and the treatment of neoplastic disorders.
摘要:
The present invention relates to Salmonella typhi Ty21a a comprising core-linked Shigella dysenteriae type 1 O-specific polysaccharide (O-Ps) and DNA encoding O antigen biosynthesis, said DNA selected from the group consisting of: a) the DNA sequence set out in any one of SEQ ID NOs: 1 and 2; b) DNA encoding S. dysenteriae serotype 1 biosynthesis polypeptides encoded by any one of SEQ ID NOs: 1 and 2; c) DNA encoding variants of the polypeptide encoded by the DNA of (a) or (b), wherein the variants comprise O antigen biosynthesis polypeptide analogs, wherein one or more of the specified amino acids is deleted or replaced, or wherein one or more non-specified amino acids are added without loss of biosynthesis of Shigella dysenteriae serotype 1 O antigen or protective immunological activity of the O antigen biosynthesis gene product; and d) nucleic acid molecules encoding gene products that share at least about 90% sequence identity with the polypeptide encoded by the nucleic acid molecule of SEQ ID NO: 1 or 2.
摘要:
The invention relates to a process for preparing L-amino acids by fermenting recombinant microorganisms of the Enterobacteriaceae family, characterized in that a) the desired L-amino acid-producing microorganisms, in which the yaaU ORF, or nucleotide sequences or alleles encoding the gene products, is/are enhanced, in particular overexpressed, is cultured in a medium under conditions under which the desired L-amino acid is enriched in the medium or in the cells, and b) the desired L-amino acid is isolated, with, optionally, constituents of the fermentation broth, and/or the biomass remaining in its/their entirety or in portions (from = 0 to 100%) in the isolated product or being removed completely.
摘要:
The present invention concerns immunogenic epitopes of Shigella-like toxins (SLTs), particularly the Shigella-like toxin of E.coli O157:H7, their use as immunogens and in treatment or diagnosis, agents (for example antibodies and antigen-binding fragments) which specifically neutralise them, their use in treatment and diagnosis, and methods for same.