85 results about "Exogenous antigen" patented technology

The present invention relates to methods and compositions for eliciting an immune response and the prevention and treatment of primary and metastatic neoplastic diseases and infectious diseases. The methods of the invention comprise administering a composition comprising an effective amount of a complex, in which the complex consists essentially of a heat shock protein (hsp) noncovalently bound to an antigenic molecule. "Antigenic molecule" as used herein refers to the peptides with which the hsps are endogenously associated in vivo as well as exogenous antigens / immunogens (i.e., with which the hsps are not complexed in vivo) or antigenic / immunogenic fragments and derivatives thereof. In a preferred embodiment, the complex is autologous to the individual. The effective amounts of the complex are in the range of 10-600 micrograms for complexes comprising hsp7o, 50-1000 micrograms for hsp9o, and 10-600 micrograms for gp96. The invention also provides a method for measuring tumor rejection in viva in an individual, preferably a human, comprising measuring the generation by the individual of MHC Class I-restricted CD8+ cytotoxic T lymphocytes specific to the tumor. Methods of purifying hsp7o-peptide complexes are also provided.

A composition for treating cancer, including synergistic amounts of a primary cell-derived biologic having the cytokines IL-1, IL-2, IL-6, IL-8, TNF-α, and IFN-γ, and a cancer vaccine having at least one antigen. A composition comprising synergistic amounts of the primary cell-derived biologic in combination with at least one adjuvant. A method of treating cancer by administering the composition. A method of reversing immune suppression and gaining immunity to cancer. A method of producing an immune response to an exogenous antigen. A method of enhancing an immune response in a patient by administering the primary cell-derived biologic in combination with at least one adjuvant, and enhancing the immune response of the patient by a synergistic interaction of the primary cell-derived biologic and the adjuvant. A method of increasing function of an immune system.

A method for overcoming mild to moderate immune suppression includes the steps of inducing production of naïve T-cells and restoring T-cell immunity. A method of vaccine immunotherapy includes the steps of inducing production of naïve T-cells and exposing the naïve T-cells to endogenous or exogenous antigens at an appropriate site. Additionally, a method for unblocking immunization at a regional lymph node includes the steps of promoting differentiation and maturation of immature dendritic cells at a regional lymph node and allowing presentation of processed peptides by resulting mature dendritic cells, thus, for example, exposing tumor peptides to T-cells to gain immunization of the T-cells. Further, a method of treating cancer and other persistent lesions includes the steps of administering an effective amount of a natural cytokine mixture as an adjuvant to endogenous or exogenous administered antigen to the cancer or other persistent lesions.

The present invention encompasses a recombinant bacterium comprising a regulated rfaH nucleic acid, as well as a vaccine comprising said recombinant bacterium. Other embodiments of the present invention encompass a recombinant bacterium comprising a regulated rfaH nucleic acid and a regulated rfc nucleic acid, while additional embodiments encompass a recombinant bacterium comprising a regulated rfaH nucleic acid and at least one nucleic acid encoding at least one exogenous antigen.

The invention relates to a recombined cattle parainfluenza carrier pcDNA-NM09-VP1 for expressing the protein VP1 of a porcine O type foot-and-mouth disease virus. The recombined cattle parainfluenza carrier is characterized in that an RNA (ribonucleic acid) extracted from a strain BPIV3NM09 is used as a template; a virus total-length gene group is segmentally amplified through RT-PCR (reverse transcription-polymerase chain reaction); the total-length cDNA of cattle parainfluenza is subjected to primary modification, namely AgeI is introduced between P and M, so that insertion and replacement of exogenous antigen gene fragments are facilitated; due to secondary modification, antigen epitope which is inserted into a heterologous virus in a modified manner is the protein VP1 of the O type foot-and-mouth disease virus; the amino acid sequence is SEQIDNO1, and the nucleotide sequence is SEQIDNO2. The foundation is laid for further development of a gene engineering recombined vaccine for preventing and controlling the porcine foot-and-mouth disease and research on the III-type toxicity factor and the molecular pathogenesis of the cattle parainfluenza; the recombined cattle parainfluenza carrier has the replication capacity.

Provided are methods of generating an immune response to any of various antigens including foreign antigens such as infectious agent antigens. In general, the method comprises administering an expression vector encoding a transcription unit encoding a secretable fusion protein, the fusion protein containing the foreign antigen and CD40 ligand and also administering the encoded fusion protein. In another approach, an immune response to the foreign antigen is elicited using the encoded fusion protein without administering the vector. The invention methods may be used to immunize an individual against an infectious agent such as influenza virus. Methods of obtaining an immune response in older individuals also is described.