摘要:
The invention provides proteins from Neisseria meningitidis (strains A & B), including amino acid sequences, the corresponding nucleotide sequences, expression data, and serological data. The proteins are useful antigens for vaccines, immunogenic compositions, and/or diagnostics.
摘要:
Present invention provides a monoclonal antibody binding to Neisseria bacteria and its target antigen Ag473, which include the sequences of its polynucleotide and its amino acid, wherein the Neisseria bacteria can be Neisseria meningitidis or Neisseria gonorrhoeae; and wherein Ag473 can be made into a vaccine or a diagnostic or therapeutic reagent.
摘要:
The present invention provides an isolated nucleic acid molecule that encodes an aminoacid sequence comprising a FrpB protein. The invention also provides vaccine compositions capable of protecting a mammal against infection by N. gonorrhoeae or N. meningitidis comprising the FrpB protein encoded by the isolated nucleic acid of the invention and a pharmaceutically acceptable carrier.
摘要:
The present invention generally provides methods and vaccines for the prevention of diseases caused by Neisseria meningitidis bacteria, particularly serogroup B strains.
摘要:
The invention provides proteins from Neisseria meningitidis (strains A & B) and from Neisseria gonorrhoeae, including amino acid sequences, the corresponding nucleotide sequences, expression data, and serological data. The proteins are useful antigens for vaccines, immunogenic compositions, and/or diagnostics.
摘要:
The first step in human meningococcal infection involves adhesion to the epithelial cells of the nasopharynx tract. The invention provides various methods and compounds for preventing the attachment of Neisserial cells to epithelial cells and is based on the identification of 347 meningococcal genes which play a role in the adhesion process.
摘要:
Described are nucleic acid molecules encoding proteins mediating the adhesion of bacteria of the genus Neisseria to human cells. Also described are the proteins encoded by these nucleic acid molecules and antibodies directed against them. Furthermore, pharmaceutical compositions, vaccines and diagnostic compositions containing the nucleic acid molecules, proteins and/or antibodies are described.
摘要:
Provided herein are mutant strains of Neisseria meningitidis which produce Kdo-free lipid A as well as the Kdo-free lipid A molecules and immunogenic compositions containing such Kdo-free lipid A molecules from a Neisseria strain containing a genetically stable mutation which inactivates a gene selected from the group consisting of genes encoding arabinose-5-phosphate isomerase, CMP-Kdo synthetase and CMP-Kdo transferase. N. meningitidis NMB206 is a specifically exemplified strain which harbors a stable insertion mutation in the gene (ApsF) encoding A5P isomerase; strain NMB-249 is a specifically exemplified strain with a stable insertion mutation in the gene (kdtA) encoding CMP-Kdo synthetase, and strain NMB259 is specifically exemplified strain with a stable insertion mutation in the gene (kdsB) encoding CMP-Kdo transferase. Also provided by the present invention are methods for the production of Lipid A flee of 3-keto-3-deoxyoctanoic acid using these genetically stable N. meningitidis mutants. Also describes is pYT250, a plasmid functional in neisseriae and in enterics such as Escherichia coli.
摘要:
The present invention relates to biotechnology and genetic engineering, particularly the expression of proteins of viral origin in microorganisms through their fusion, by applying the recombinant DNA technology, to bacterial peptides. The present invention provides an efficient process for the expression in Escherichia coli of heterologous proteins as fusion polypeptides with a view to obtaining them with a high degree of purity, in commercially useful amounts, and in an appropriate form for their inclusion in vaccine preparations intended to human use. To this effect, what is essentially used is a stabilizing sequence derived from the first 47 amino acids of the antigen P64k of Neisseria meningitidis B:4:P1.15. In particular, use is made of a recombinant plasmid containing said sequence, under the control of the tryptophane promotor of E. coli and of the terminator of the transcription of the phage T4, including restriction sites which provide for the cloning in phase of DNA fragments coding for polypeptides of interest. The process of the invention is applicable to the pharmaceutical industry, for the development of diagnostic systems, vaccine preparations, and in any situation where it is required to obtain high amounts of heterologous proteins as fusion polypeptides in E. coli.
摘要:
The present invention relates to peptides which exhibit potent anti-retroviral activity. The peptides of the invention comprise DP178 (SEQ ID:1) peptide corresponding to amino acids 638 to 673 of the HIV-1.sub.LAI gp41 protein, and fragments, analogs and homologs of DP178. The invention further relates to the uses of such peptides as inhibitory of human and non-human retroviral, especially HIV, transmission to uninfected cells.