摘要:
The present invention relates, e.g., to a glycoconjugate composition comprising one or more polysaccharide types from a cell wall polysaccharide preparation from B. pumilus Sh 18, or variants thereof. Also disclosed are antibodies generated against the glycoconjugates, and methods of using the glycoconjugates and antibodies. An antimultiorganism vaccine which reacts against at least Haemophilus influenzae type a, Haemophilus influenzae type b, Staphylococcus aureus, and Staphylococcus epidermidis, is disclosed.
摘要:
Vi capsular polysaccharides conjugated to toxin-dependent proteins can be used to enhance antibody response and to convert T-dependent properties to the Vi capsular polysaccharide. A heterobifunctional crosslinking agent can be used to bind thiol derivatives of the Vi capsular polysaccharides to the proteins, such as diphtheria, tetanus toxoids, cholera toxin and Haemophilus influenzae.
摘要:
Disclosed are immunogenic conjugates and therapeutic compositions that include such immunogenic conjugates. Also disclosed are methods of treating and/or inhibiting an Shigella sonnei infection. The disclosed immunogenic conjugates have the general structure: Pr—Sr—O—N═C-Kdo-OS wherein Pr is a carrier protein, Sr is an optional spacer moiety, Kdo is an 3-deoxy-D-manno-octulosonic acid or a derivative thereof, and OS is an oligosaccharide or polysaccharide obtained from S. sonnei. In specific examples, the immunogenic conjugates include the core oligosaccharide obtained from S. sonnei having the structure: wherein R is between 1 and 10 disaccharide repeat units. In specific examples, the disaccharide repeat unit included in the immunogenic conjugate has the structure: α-L-AltNAcA-3-β-FucNAc4N-4-.
摘要:
Disclosed are immunogenic conjugates having the general formula: M2e-Cys-S—CH2—C(O)—NH—CH2—CH2-C(O—)NH-Lys-Pr, were M2e is the influenza M2 ectodomain (M2e) peptide; Cys is a cysteine amino acid residue present in the M2e peptide; S the sulfur present in the cysteine amino acid residue; CH2-CO—NH—CH2-CH2-CO the linking group; NH the amine group present in a lysine residue of the carrier; Lys is a lysine amino acid residue and Pr the carrier protein. Also disclosed are isolated immunogens that include an immunogenic fragment of an influenza HA protein including the polybasic cleavage site, wherein the immunogenic fragment of the influenza HA protein has been modified to remove an N-terminal leader amino acid sequence and a C-terminal transmembrane domain. Also disclosed are methods producing an influenza vaccine specific for an identified influenza strain.
摘要:
Methods for making an immunogenic conjugate that includes a hapten or an antigen covalently linked to a carrier. The methods include reacting a first agent with a dihydrazide resulting in a hydrazine-modified first agent, wherein the first agent is a hapten, an antigen or a carrier; reacting a second agent with a benzaldehyde compound resulting in a benzaldehyde-modified second agent, wherein the second agent is a hapten, an antigen or a carrier, provided that the first agent or the second agent is a carrier; and reacting the hydrazine-modified first agent with the benzaldehyde-modified second agent resulting in an immunogenic conjugate comprising a hapten or an antigen covalently linked to a carrier via a hydrazone linkage.
摘要:
The invention relates to improved methods of producing and recovering B. anthracis protective antigen (PA), especially modified PA which is protease resistant, and to methods of using of these PAs or nucleic acids encoding these PAs for eliciting an immunogenic response in humans, including responses which provide protection against, or reduce the severity of, B. anthracis bacterial infections and which are useful to prevent and/or treat illnesses caused by B. anthracis, such as inhalation anthrax, cutaneous anthrax and gastrointestinal anthrax.
摘要:
Immunogenic compositions and methods for eliciting an immune response against B. anthracis and other bacilli are provided that include immunogenic conjugates of a poly-γ-glutamic acid (γPGA) polypeptide of B. anthracis, or of another Bacillus that expresses a γPGA polypeptide. The γPGA conjugates elicit an effective immune response against B. anthracis, or against another Bacillus, in mammalian hosts to which the conjugates are administered.
摘要:
Methods for making an immunogenic conjugate that includes a hapten or an antigen covalently linked to a carrier. The methods include reacting a first agent with a dihydrazide resulting in a hydrazino-modified first agent, wherein the first agent is a hapten, an antigen or a carrier; reacting a second agent with a benzaldehyde compound resulting in a benzaldehyde-modified second agent, wherein the second agent is a hapten, an antigen or a carrier, provided that the first agent or the second agent is a carrier; and reacting the hydrazine-modified first agent with the benzaldehyde-modified second agent resulting in an immunogenic conjugate comprising a hapten or an antigen covalently linked to a carrier via a hydrazone linkage.
摘要:
The invention relates to improved methods of producing and recovering sporulation-deficient B. anthracis mutant stains, and for producing and recovering recombinant B. anthracis protective antigen (PA), especially modified PA which is protease resistant, and to methods of using of these PAs or nucleic acids encoding these PAs for eliciting an immunogenic response in humans, including responses which provide protection against, or reduce the severity of, B. anthracis bacterial infections and which are useful to prevent and/or treat illnesses caused by B. anthracis, such as inhalation anthrax, cutaneous anthrax and gastrointestinal anthrax.
摘要:
A medically important and useful conjugate comprising pertussis toxin (PT), or another antigen having similar physico-chemical properties, as the carrier protein component, coupled to a neutral or non-charged saccharide, particularly, the capsular polysaccharide of Streptococcus pneumoniae type 14 (Pn14), for use as an effective, non-toxic, and highly immunogenic vaccine is described. The invention is directed to a novel synthetic scheme wherein PT and like proteins, and a derivative of Pn14, and the like, were coupled at acidic pH via carbodiimide-mediated condensation to produce an immunogenic conjugate. The coupling procedure yielded a Pn14-PT conjugate in which the PT component was rendered non-toxic and both the PT and Pn14 components were immunogenic, as determined by the production of protective levels of both type-specific and neutralizing antibodies in mammals. The Pn14-PT conjugate was used as an immunogen at levels estimated to be protective in humans and stands to provide an effective, safe, and potent human vaccine.