93 results about "Neisseria" patented technology

The present invention generally provides methods and compositions for eliciting an immune response against Neisseria spp. bacteria in a subject, particularly against a Neisseria meningitidis serogroup B strain.

Group A and Group C epidemuic cerebrospinal meningitis Neisseria capsular polysaccharide and type-B influenza Hemophilus polysaccharide are combined onto effective protein carrier chemically via covalent bond, so that combined polysacchairde-protein vaccine for immunologically inocualting human body is prepared to prevent infection caused by Group A and Group C epidemic cerebrospinal meningitis neisseria and type-B influenza Hemophilus.

The present invention relates to Neisseria ORF2086 proteins, crossreactive immunogenic proteins which can be isolated from nesserial strains or prepared recombinantly, including immunogenic portions thereof, biological equivalents thereof, antibodies that immunospecifically bind to the foregoing and nucleic acid sequences encoding each of the foregoing, as well as the use of same in immunogenic compositions that are effective against infection by Neisseria meningitidis serogroup B.

The present invention relates to novel bacterial hemoglobin receptor proteins and genes that encode such proteins. The invention is directed toward the isolation, characterization, diagnostic and therapeutic use of bacterial hemoglobin receptor proteins, nucleic acid encoding such proteins, recombinant expression constructs comprising such nucleic acids and cells transformed therewith, and antibodies and epitopes of such hemoglobin receptor proteins. The invention relates particularly to hemoglobin receptor proteins and genes encoding such proteins from Neisseria species, especially N. meningitidis and serotypes thereof, and N. gonorrhoeae. Methods for the diagnostic and therapeutic use of the proteins, epitopes, antibodies and nucleic acids of the invention are also provided, including the use of the proteins, epitopes, antibodies and nucleic acids of the invention for the production of vaccines effectinve in providing immunization of a human against infection by pathogenic bacteria of Neisseria species.

DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample DNA from (i) any bacterium, (ii) the species Streptococcus agalactiae, Staphylococcus saprophyticus, Enterococcus faecium, Neisseria meningitidis, Listeria monocytogenes and Candida albicans, and (iii) any species of the genera Streptococcus, Staphylococcus, Enterococcus, Neisseria and Candida are disclosed. DNA-based methods employing amplification primers or probes for detecting, identifying, and quantifying in a test sample antibiotic resistance genes selected from the group consisting of blatem, blarob, blashv, blaoxa, blaZ, aadB, aacC1, aacC2, aacC3, aacA4, aac6'-lla, ermA, ermB, ermC, mecA, vanA, vanB, vanC, satA, aac(6')-aph(2''), aad(6'), vat, vga, msrA, sul and int are also disclosed. The above microbial species, genera and resistance genes are all clinically relevant and commonly encountered in a variety of clinical specimens. These DNA-based assays are rapid, accurate and can be used in clinical microbiology laboratories for routine diagnosis. These novel diagnostic tools should be useful to improve the speed and accuracy of diagnosis of microbial infections, thereby allowing more effective treatments. Diagnostic kits for (i) the universal detection and quantification of bacteria, and/or (ii) the detection, identification and quantification of the above-mentioned bacterial and fungal species and/or genera, and/or (iii) the detection, identification and quantification of the above-mentioned antibiotic resistance genes are also claimed.

To ensure maximum cross-strain recognition and reactivity, regions of proteins that are conserved between different Neisserial species, serogroups and strains can be used. The invention provides proteins which comprise stretches of amino acid sequence that are shared across the majority of Neisseria, particularly N. meningitidis and N. gonorrhoeae.

The present invention discloses an oral composition comprising a combination of probiotic bacteria selected from the group comprising Streptococcus, Eubacterium, Neisseria, Veillonella and pH-rising and/or buffering components, which re-establishes an oral microflora associated with good oral health in subjects with a disturbed oral microflora. The invention also discloses the use of the oral composition in combination with other oral health promoting products to help subjects suffering from disorders such as oral dryness, caries, halitosis, inflamed oral mucous membranes or oral fungal infections to restore good oral health.

The invention provides methods of obtaining immunogenic proteins from genomic sequences including Neisseria, including the amino acid sequences and the corresponding nucleotide sequences, as well as the genomic sequence of Neisseria meningitidis B. The proteins so obtained are useful antigens for vaccines, immunogenic compositions, and/or diagnostics.

Capsular polysaccharides containing multiple sialic acid residues, particularly the Group B polysaccharide of Neisseria meningitidis, are modified by chemical reaction to randomly introduce pendant reactive residues of heterobifunctional linker molecules to the polysaccharide backbone. The capsular polysaccharide is deacetylated and the heterobifunctional linker molecule is reacted with the deacetylated material and any residual amino groups are blocked by reaction with alkyl acid anhydride. The introduction of the linker molecules to the polysaccharide chain between the termini enables the polysaccharide to be linked to a carrier molecule, such as a protein, to enhance the immunogenicity of the polysaccharide. The conjugate molecule may be formulated as an immunogenic composition for raising antibodies in a host to the polysaccharide.

The invention discloses an A-group C-group Neisseria meningitidis polysaccharide conjugate vaccine activating process. The problem that highly-toxic chemical reagents, such as cyanogen bromide, are used in the vaccine manufacturing process in the prior art and accordingly are harmful to protection of human health and environment is solved. The A-group C-group Neisseria meningitidis polysaccharide conjugate vaccine activating process comprises the following steps of 1 cultivating Neisseria meningitidis, 2 utilizing the cultivated Neisseria meningitidis to extract crude polysaccharide, 3 purifying the crude polysaccharide to prepare refined Neisseria meningitidis polysaccharide and 4 activating and deriving the refined polysaccharide. The A-group C-group Neisseria meningitidis polysaccharide conjugate vaccine activating process has the advantages that the extraction rate of the polysaccharide from a capsule is higher, the precipitation rate of the polysaccharide is higher, the recovery rate and purity of the refined polysaccharide are high, the derivation effect is better and the like.

The present invention provides a method of inhibiting the formation of infectious herpes virus particles, particularly infectious herpes simplex virus (HSV) particles, in a host cell. The method involves administering an effective amount of a hydroxylated tolan, particularly a polyhydroxylated tolan, to a herpes virus infected host cell. The present invention also provides a method of treating a herpes virus infection, particularly an HSV infection. The method comprises administering a topical composition comprising a therapeutically effective amount of a hydroxylated tolan to a herpes virus-infected site. The present invention also relates to a topical composition for treating a herpes virus infection selected from the group consisting of an HSV infection, a cytomegalovirus infection, and a varicella zoster virus infection. The present invention also provides a method of treating a subject infected with Neisseria gonorrhea.

The invention provides a B-group epidemic neisseria meningitidis recombinant protein vaccine and a preparing method thereof, and belongs to the field of biological products. The vaccine contains three mutant recombinant proteins of a human H factor binding protein. The invention further provides a preparing method of the B-group epidemic neisseria meningitidis recombinant protein vaccine. The method includes the steps of human H factor binding protein V1, V2 and V3 recombinant expression carrier construction, expression strain screening and identification, fermental cultivation, recombinant protein antigen inducible expression and recombinant protein antigen purification and protein detection; and according to the concentrations of the three antigen components, quantified mixing is carried out, and the B-group epidemic neisseria meningitidis recombinant protein vaccine is prepared in cooperation with an aluminum adjuvant. By means of the B-group epidemic neisseria meningitidis recombinant protein vaccine, intraperitoneal injection is carried out on an immune mice, the mice body can be stimulated to generate a B-group epidemic neisseria resisting peculiar antibody, and the alexin mediated serum sterilization antibody can rise by more than 8 times.

The present invention relates to Neisseria ORF2086 proteins, crossreactive immunogenic proteins which can be isolated from nesserial strains or prepared recombinantly, including immunogenic portions thereof, biological equivalents thereof, antibodies that immunospecifically bind to the foregoing and nucleic acid sequences encoding each of the foregoing, as well as the use of same in immunogenic compositions that are effective against infection by Neisseria meningitidis serogroup B.

The invention discloses the Neisseria meningitidis NMASP polypeptide, polypeptides derived therefrom (NMASP-derived polypeptides), nucleotide sequences encoding said polypeptides, and antibodies that specifically bind the NMASP polypeptide and/or NMASP-derived polypeptides. Also disclosed are prophylactic or therapeutic compositions, including immunogenic compositions, e.g., vaccines, comprising NMASP polypeptide and/or a NMASP-derived polypeptide. The invention additionally discloses methods of inducing a immune response to Neisseria meningitidis and Neisseria meningitidis NMASP polypeptide and an NMASP-derived polypeptide in animals.

Provided are non-competitive internal controls for use in nucleic acid tests (NATs), which are obtained from the organisms Methanobacterium thermoautrophicum (MET) and Zea mays (Corn). The non-competitive internal controls have utility in DNA and RNA NATs selected from Influenza A, Influenza B, parainfluenza viruses 1 to 4 (PIV-1 to PIV-4), respiratory syncytial virus type A (RSV A), RSV B, human metapneumovirus (hMPV), Chlamydia trachomatis (CT), and Neisseria gonorrhea (GC), Hepatitis B virus (HBV), Hepatitis C virus (HCV), Human Immunodeficiency Virus I (HIV-1), and Severe Acute Respiratory Syndrome (SARS).