摘要:
The present invention provides antibodies that bind to the endospore of the bacterium Clostridium difficile, methods of making such antibodies, and methods of using such antibodies, including methods of detecting C. difficile endospores.
摘要:
A method for producing a clone of an immortalised human B memory lymphocyte, comprising the step of transforming human B memory lymphocytes using Epstein Barr virus (EBV) in the presence of a polyclonal B cell activator. The method is particularly useful in a method for producing a clone of an immortalised human B memory lymphocyte capable of producing a human monoclonal antibody with a desired antigen specificity, comprising the steps of: (i) selecting and isolating a human memory B lymphocyte subpopulation; (ii) transforming the subpopulation with Epstein Ban virus (EBV) in the presence of a polyclonal B cell activator; (iii) screening the culture supernatant for antigen specificity; and (iv) isolating an immortalised human B memory lymphocyte clone capable of producing a human monoclonal antibody having the desired antigen specificity.
摘要:
The present specification discloses SNAP-25 compositions, methods of making α-SNAP-25 antibodies that bind an epitope comprising a carboxyl-terminus at the P1 residue from the BoNT/A cleavage site scissile bond from a SNAP-25 cleavage product, α-SNAP-25 antibodies that bind an epitope comprising a carboxyl-terminus at the P1 residue from the BoNT/A cleavage site scissile bond from a SNAP-25 cleavage product, methods of detecting BoNT/A activity, and methods of detecting neutralizing α-BoNT/A antibodies.
摘要:
In one aspect, the invention relates to an immunogenic composition that includes a mutant Clostridium difficile toxin A and/or a mutant Clostridium difficile toxin B. Each mutant toxin includes a glucosyltransferase domain having at least one mutation and a cysteine protease domain having at least one mutation, relative to the corresponding wild-type C. difficile toxin. The mutant toxins may further include at least one amino acid that is chemically crosslinked. In another aspect, the invention relates to antibodies or binding fragments thereof that binds to said immunogenic compositions. In further aspects, the invention relates to isolated nucleotide sequences that encode any of the foregoing, and methods of use of any of the foregoing compositions.
摘要:
Provided herein is a means which is effective for botulism diseases and the prevention of the botulism diseases. Specifically provided is a plurality of human anti-botulinum toxin type-A antibodies having different epitopes from one another. Also specifically provided is a composition for neutralizing botulinum toxin type-A, which comprises a combination of two or more of the antibodies and which has a high neutralizing activity.
摘要:
An in vitro process for the preparation of antibodies of the IgG type, comprising the steps of: i. challenging dendritic cells obtained from a donor with an antigen against which the antibodies to be prepared are directed; ii. challenging CD4+ T cells obtained from the same donor with fragments of the antigen presented by the dendritic cells from step L, with the proviso that the dendritic cells are ones essentially not secreting interferon-γ (IFN-γ) and interleukin 12 (IL-12), to generate antigen-specific CD4+ Th2 cells; iii. challenging with the antigen a B cell population obtained from the same donor and including a sufficient proportion of naive B cells; and iv. contacting the antigen-specific CD4+ Th2 cells according to ii. with at least a fraction of the B cell population from iii. to form an antigen-specific plasma cell; v. immortalizing said antigen-specific plasma cell; and vi. isolating the IgG antibodies formed by said antigen-specific plasma cell.
摘要:
The compositions and methods of the present invention comprise the efficient and effective presentation of antigens to the appropriate components of the immune system resulting in the production of species-specific antibodies in vitro. In general, these compositions comprise one or more antigenic components together with a colloidal metal, optionally combined with derivatized PEG (polyethylene glycol) or other agents. The invention also comprises methods and compositions for making such colloidal metal compositions.
摘要:
The invention provides active and passive immunization methods for preventing and treating Clostridium difficile infection, which involve percutaneous administration of C. difficile toxin-neutralizing polyclonal immune globulin, C. difficile toxoids, or combinations thereof. Also provided by the invention are C. difficile toxoids, C. difficile toxin-neutralizing polyclonal immune globulin, and methods of identifying subjects that produce C. difficile toxin-neutralizing polyclonal immune globulin.
摘要:
Described are transgenic, non-human animals comprising a nucleic acid encoding an immunoglobulin light chain, whereby the immunoglobulin light chain is human, human-like, or humanized. The nucleic acid is provided with a means that renders it resistant to DNA rearrangements and/or somatic hypermutations. In one embodiment, the nucleic acid comprises an expression cassette for the expression of a desired molecule in cells during a certain stage of development in cells developing into mature B cells. Further provided is methods for producing an immunoglobulin from the transgenic, non-human animal.
摘要:
Compositions and methods that include stabilized protein drugs are described. In addition, protein drug formulations that are more stable under ambient conditions are described. The formulations include one or more polyamino acid ligands of the protein drug.