Abstract: Compositions and methods for the treatment of Chlamydial infection are disclosed. The compositions provided include polypeptides that contain at least one antigenic portion of a Chlamydia antigen and DNA sequences encoding such polypeptides. Pharmaceutical compositions, vaccines and diagnostic kits are also disclosed.

Abstract: The invention provides vectors, attenuated pathogens, compositions, methods, and kits for use in preventing or treating infection by an infectious pathogen, especially Chlamydia trachomatis. The vectors comprise the plasmid encoded ppg genes from Chlamydia, ppg1, ppg2, ppg3, ppg5, ppg6, ppg7 and/or ppg8, but lack ppg4, a regulator of virulence associated genes. The application also provides attenuated pathogens, especially chlamydia, which are cured of their plasmid and have additional mutations to improve the attenuation, especially mutations in the CT135 gene or in the tryptophan operon (trp promoter, trpA, or trpB). Uses of said nucleic acids and attenuated pathogens for inducing or modulating an immune response in a subject, especially for prevention or treatment of infections, are proposed.

Abstract: Compositions and methods for the treatment of Chlamydial infection are disclosed. The compositions provided include polypeptides that contain at least one antigenic portion of a Chlamydia antigen and DNA sequences encoding such polypeptides. Pharmaceutical compositions, vaccines and diagnostic kits are also disclosed.

Abstract: Compositions and methods for the treatment of Chlamydial infection are disclosed. The compositions provided include polypeptides that contain at least one antigenic portion of a Chlamydia antigen and DNA sequences encoding such polypeptides. Pharmaceutical compositions, vaccines and diagnostic kits are also disclosed.

Abstract: The invention provides vectors, attenuated pathogens, compositions, methods, and kits for use in preventing or treating infection by an infectious pathogen, especially Chlamydia trachomatis. The vectors comprise the plasmid encoded ppg genes from Chlamydia, ppg1, ppg2, ppg3, ppg5, ppg6, ppg7 and/or ppg8, but lack ppg4, a regulator of virulence associated genes. The application also provides attenuated pathogens, especially chlamydia, which are cured of their plasmid and have additional mutations to improve the attenuation, especially mutations in the CT135 gene or in the tryptophan operon (trp promoter, trpA, or trpB). Uses of said nucleic acids and attenuated pathogens for inducing or modulating an immune response in a subject, especially for prevention or treatment of infections, are proposed.

Abstract: Compositions and methods for the treatment of Chlamydial infection are disclosed. The compositions provided include polypeptides that contain at least one antigenic portion of a Chlamydia antigen and DNA sequences encoding such polypeptides. Pharmaceutical compositions, vaccines and diagnostic kits are also disclosed.

Abstract: The present invention relates to novel polypeptides comprising a unique “chlamydial-specific” primary structural conformation and one or more of the biological properties of eukaryotic or prokaryotic stress-response proteins which are characterized by being the expressed products of an endogenous or exogenous DNA sequence in a eukaryotic or prokaryotic host cell. Sequences coding for part or all of the amino acid residues of the chlamydial HypA or HypB protein or for analogs thereof may be incorporated into autonomously replicating vectors employed to transform or transfect suitable procaryotic or eukaryotic host cells such as bacteria or vertebrate cells in culture. The HypB protein is a member of the family of stress response proteins referred to as HSP60. Products of expression of the DNA sequences display the identical physical, immunological, and histological properties as the chlamydial proteins isolated from natural, non-recombinant, organisms.

Abstract: The nucleotide and deduced amino acid sequences of the four variable domains of the major outer membrane proteins of the 15 serovars of Chlamydia trachomatis are disclosed together with sequence and immunogenic analysis of these domains.

Abstract: The nucleotide and deduced amino acid sequences of the four variable domains of the major outer membrane proteins of the 15 serovars of Chlamydia trachomatis are disclosed together with sequence and immunogenic analysis of these domains.

Abstract: Disclosed is a clone and the process for cloning genes encoding the genus-specific lipopolysaccharide antigen of chlamydia. The clone is a hybrid lipopolysaccharide molecule composed of both chlamydia and E. coli components.

Abstract: The present invention relates to novel polypeptides comprising a unique "chlamydial-specific" primary structural conformation and one or more of the biological properties of eukaryotic or prokaryotic stress-response proteins which are characterized by being the expressed products of an endogenous or exogenous DNA sequence in a eukaryotic or prokaryotic host cell. Sequences coding for part or all of the amino acid residues of the chlamydial HypA or HypB protein or for analogs thereof may be incorporated into autonomously replicating vectors employed to transform or transfect suitable procaryotic or eukaryotic host cells such as bacteria or vertebrate cells in culture. The HypB protein is a member of the family of stress response proteins referred to as HSP60. Products of expression of the DNA sequences display the identical physical, immunological, and histological properties as the chlamydial proteins isolated from natural, non-recombinant, organisms.

Abstract: Procedures are presented for isolating the major outer membrane protein of Chlamydia trachomatis. The isolated protein is a species specific antigen which comprises about 60% of the C. trachomatis cell outer membrane structure. The protein has a molecular weight ranging from about 38,000 to 44,000 daltons, with a mean molecular weight of about 39,500 daltons. The protein antigen is purified from C. trachomatis cells by first extracting the cell contents with a mild anionic detergent, preferably sarcosyl, to leave a residue of intact outer cell membranes. These outer cell membranes are then extracted with a strong anionic detergent, preferably sodium dodecyl sulfate, which solubilizes the 39,500 dalton antigen. The antigen is then purified by hydroxlapatite chromatography. The antigen is species specific for Chlamydia trachomatis and may be utilized in assaying Chlamydial infection in mammals.

Abstract: Solubilized antigens of C. trachomatis strain LGV-434 upon analysis using two-dimensional immunoelectrophoresis yielded a single antigen which was found to be consistently precipitated by sera of patients with C. trachomatis infections. This antigen as antigen-antibody complex was employed as an immunogen to prepare a rabbit monospecific antiserum to this component or antigen. This monospecific antiserum demonstrated the presence of the antigen in each of the 15 strains of C. trachomatis organisms and was non-reactive with strains of C. psittaci. The C. trachomatis specific antigen was purified by immunoadsorption chromatography using monospecific antiserum as a specific ligand covalently bound to agarose gel columns and the resulting purified antigen employed to detect antibody from the sera of lymphogranuloma venereum patients using counterimmunoelectrophoresis. When the C.