摘要:
The present invention refers to new glycoconjugate antigens expressing built-in multiple epitopes and to polyvalent glycoconjugate vaccines intended for the protection of mammalians, and particularly for the protection of the human population from enteropathogenic bacteria, such as the Gram-positive anaerobic bacterium Clostridium difficile and the Gram-negative bacteria Salmonella typhi, Escherichia Coli, Vibrio Cholerae, Shigella flexneri, Salmonella typhimurium, Salmonella enteritidis, Salmonella paratyphi A, Shigella sonnei, Shigella dysenteriae, Salmonella cholerasuis, Klebsiella, Enterobacter,Pseudomonas aeruginosa and/or from viral gastrointestinal infections due to human noroviruses.
摘要:
An attenuated Salmonella bacterium deficient in the naturally occurring gene that encodes one or both of the TCA enzymes aconitase or isocitrate dehydrogenase induces the innate immune response of an animal to which it is administered. The bacterium, when manipulated to express a target gene from another microorganism or a cancer or tumor, also can induce the innate immune response of a vaccinated animal to the target microorganism or cancer/tumor cell. The manipulated bacterium is useful as both a component for a Salmonella vaccine and as heterologous gene delivery platform to induce immune responses against other diseases.
摘要:
The present invention provides a DNA molecule comprising a nucleic acid sequence including at least one pair of a first and a second differentially controlled transcription units, wherein the first transcription unit includes a first promoter operably linked to a first gene encoding a cytotoxic gene product, the second transcription unit includes a second promoter that is different from the first promoter and is operably linked to a second gene encoding a gene product neutralizing said cytotoxic gene product, at least one of said first and said second promoter is a regulated promoter responsive to a predetermined condition, and said DNA molecule is designed such that under said predetermined condition the amount of said neutralizing gene product is not sufficient to neutralize the cytotoxic effect of the cytotoxic gene product. The present invention further provides conditionally inactivated or attenuated bacteria comprising the DNA molecule of the invention, and vaccines comprising them.
摘要:
Recombinant papaya mosaic virus (PapMV) coat proteins comprising one or more antigenic peptides derived from an influenza virus antigen, such as from the M2e peptide, fused at a position within a predicted random coil within 13 amino acids of the N-terminus of the coat protein, uses thereof to prepare virus-like particles (VLPs), and uses of the VLPs in influenza vaccines.
摘要:
La invención provee composiciones inmunogénicas para aplicaciones mucosales yparenterales comprendiendo (1) un sacárido capsular único o múltiples bacteriano noconjugados y (2) potentes adyuvantes. Polisacáridos u oligosacáridos planos son preferidos sin excluir la adición de los potentes adyuvantes a polisacáridos conjugados. Es preferido que los adyuvantes sean los AFCox (Adjuvant Finlay Cocleato familia x) o AFPLx (Proteoliposoma familia x). Es preferido la vía mucosal sin excluir la parenteral o combinaciones de estas. La invención también provee composiciones inmunogénicas a) un antígeno sacarídico capsular de serogrupo C o serogrupo A de. Neisseria meningitidis, b) los adyuvantes AFPL1 adsorbido en alúmina por vía parenteral o AFPL1 no adsorbido o AFCol por vía nasal y c) la aplicación de dos 'priming' parenteral y mucosal simultáneos con cualesquiera de los potentes adyuvantes formulados con los referidos antígenos. El empleo de potentes adyuvantes formulados con polisacáridos no conjugados aumentan la respuesta inmune mucosal y sistémica polarizando la respuesta Timo independiente de los polisacáridos hacia una respuesta Timo Dependiente con un patrón Thl, celular, que garantiza su funcionalidad en niños pequeños e induce memoria inmune sin requerir la conjugación covalente.
摘要:
The present invention relates to novel Salmonella mutants, to a process for producing the same and to vaccines containing the same, wherein said Salmonella mutants are characterized in that they are not responsive to stress-related recrudescence. It is accordingly an object of the present invention to provide the use of said Salmonella mutants in the vaccination of animals, in particular mammals and birds, more in particular pigs, poultry and cattle.
摘要:
The present investigation relates to entrapment of carbohydrate antigen such as Vi polysaccharide of Salmonella typhi in poly (DL) lactide (PDLLA) and polylactide-co- glycolide (PLGA) polymer particles. The formulated product not only elicits primary antibody titers from single dose application but also evokes memory antibody titer against the T independent antigen.
摘要:
The present invention relates to methods for removing free carbohydrate from a carbohydrate-protein conjugate composition using ion exchange membranes or monoliths. The present invention further relates to pharmaceutical compositions produced in accordance with the methods of the invention.
摘要:
The present invention relates to Salmonella entehca comprising at least one pgl operon of Campylobacter jejuni or a functional derivative thereof and presenting at least one N- glycan of Campylobacter jejuni or N-glycan derivative thereof on its cell surface. In addition, it is directed to medical uses and pharmaceutical compositions thereof as well as methods for treating and/or preventing Campylobacter and optionally Salmonella infections and methods for producing these Salmonella strains.