35 results about "HPV Antigen" patented technology

This document describes compositions and methods for inducing an immune response (e.g., a cellular response such as a cell-mediated cytolytic immune response) to a human papillomavirus (HPV) antigen, which can be displayed by HPV or exhibited by infected cells (e.g., cells from cervical and other tumors). The HPV protein can be joined to a stress protein by chemical conjugation or noncovalently using linking moieties, or by fusion (e.g., a recombinant fusion protein). Also described are expression vectors containing sequences encoding HPV antigens and stress proteins, which can be introduced into cells of a subject or cells ex vivo. Also described are compositions that include a stress protein linked to an HPV antigen and another pharmacologically acceptable component and stress protein—HPV antigen fusions and conjugates. These compositions can be used to induce or enhance an immune response against HPV and cells that exhibit HPV antigens, including HPV-associated tumors.

The present invention relates to combined vaccines against measles and human papilloma virus (HPV). In particular, the invention relates to recombinant measles virus vectors containing heterologous nucleic acid encoding single or several antigens derived from HPV, preferably, the major capside antigen L1, the minor capside antigen L2, the early gene E6 and the early gene E7 oncoproteins of HPV type 16, and optionally of types 18, 6 and 11. In a first embodiment, prophylactic vaccines are generated expressing HPV antigens, preferably L1 and/or L2 such that they induce a potent long-lasting immune response in mammals, preferably humans, to protect against HPV and MV infection. In another embodiment, therapeutic vaccines are generated expressing E6 and E7 proteins, and optionally L1 and L2, such that they induced strong immune responses will resolve persistent HPV infections at early or late stages, including HPV-induced cervical carcinoma. In a preferred embodiment, the combined vaccines are easy to produce on a large scale and can be distributed at low cost.

The present invention relates to the intersection of the fields of immunology and protein engineering, and particularly to antigens and vaccines useful in prevention of infection by human papilloma virus. Provided are recombinant protein antigens, compositions, and methods for the production and use of such antigens and vaccine compositions.

The current invention provides improved methods and means for the treatment of virally induced intraepithelial neoplasias of the ano-genital tract, such as HPV induced vulvar-, cervical-, vaginal-, penile- and anal intraepithelial neoplasias (VIN, CIN, VAIN, PIN and AIN). The invention provides a method of treatment of a subject suffering from an anogenital intraepithelial neoplasia comprising at least the steps of first determining whether the subject has a T-cell reactivity for viral early antigens, in particular high risk type HPV antigens; and subsequently a local treatment of the neoplasia with immune modulating compounds eliciting local inflammation if the subject scores positive for the T-cell reactivity, preferably a CD4+response against HPV early antigens. The invention also comprises methods and means to induce or further stimulate a cellular immune response against HPV antigens, prior to or during treatment with the immune modulating compound capable of eliciting a local inflammatory response.

The invention describes a vaccine compositions comprising chimeric fusions of the HPV antigens with viral or bacterial proteins conferring enhanced immunogenicity useful for Hepatitis B virus as well as human papillomavirus (HPV) infections.

The invention discloses a preparation method of HLA-A0201-restricted anti-HPV (human papillomavirus) antigen-specific CTL. The preparation method comprises the following steps of: collecting peripheral blood mononuclear cells through apheresis, and enriching and purifying CD8+T lymphocytes; stimulating the CD8 + T lymphocytes by mature dendritic cells of a loaded HLA-A0201-restricted HPV antigen polypeptide; and promoting the T-cell growth through combined use of rhIL-2 and rhIL-7; purifying a target CTL by a Tetramer marking method and a flow cytometry sorting technique; stimulating the growth of the target CTL by solid phase packaged anti-human CD3 monoclonal antibody and IL-2; adding autologous PBMCs (peripheral blood mononuclear cell) after gamma-ray irradiation for enhancing activation of the target CTL; and adding rhIL-15, cultivating and amplifying, and collecting and identifying. The target CTL prepared by the prepared method has high purity, high proliferative capacity, high killing activity and a high CTL-CM ratio and can be applied to immunotherapy of tumors and the like.

The present invention relates to new HPV epitope, wherein the sequence of the new HPV epitope is an amino acid sequence selected from SEQ ID NO:1-5 or an amino acid sequence having at least 80% identity with a sequence selected from SEQ ID NO:1-5. The invention further relates to applications of the epitope in detection of the presence of antibodies against HPV, particularly high-risk HPV, in samples, and in detection of the infection of HPV, particularly high-risk HPV, in subjects.

A method for enhancing immunogenicity of an epitope peptide of an HPV antigen, the method including: assembling a gene of an HPV antigen into a gene of HBc, exogenously expressing a resulting assembled gene to acquire a fusion protein, allowing the fusion protein to automatically assemble to form a virus-like particle including the HPV antigen on a surface of the virus-like particle, to obtain HBc-HPV virus-like particle. A virus-like particle capable of expressing the antigen peptide of HPV acquired by the method. The virus-like particle includes a HBc-L2 fusion protein. A genome for encoding the HBc-L2 fusion protein is represented by SEQ ID NO. 3. A method for preparing an HPV vaccine includes using the virus-like particle.

A surface expression vector for preparing HPV vaccines, in which the surface expression vector contains a gene encoding a repE mutant protein having an amino acid sequence of SEQ ID NO: 1, a promoter, a poly-gamma-glutamate synthetase complex gene, and a gene which is linked with the poly-gamma-glutamate synthetase complex gene and encodes a tumor induction-associated antigen protein of human papillomavirus.

An expression vector constitutively expressing a high level of the human papillomavirus (HPV) antigen protein is provided. Also, a recombinant lactic acid bacteria, transformed with the expression vector and expressing the HPV antigen protein on the surface thereof, and a composition comprising the recombinant lactic acid bacteria are provided. The recombinant lactic acid bacteria and the composition are very effective as a vaccine for the treatment of cervical cancer, because they can be applied orally or directly to the vagina.

Safe, rapid and efficient methods for producing antigen-specific T cells recognizing human papilloma virus or HPV antigens.

The present disclosure provides a DNA vaccine for a subject having a human papillomavirus (HPV)-associated disease. The DNA vaccine may include a DNA construct including a fusion gene. The fusion gene may be a subsegment of the DNA construct that includes an optimized HPV subsequence encoding at least one HPV antigen. The optimized HPV subsequence may include one or more of: an HPV-16 E6 expressing gene set forth in SEQ ID NO: 1, an HPV-16 E7 expressing gene set forth in SEQ ID NO: 2, an HPV-18 E6 expressing gene set forth in SEQ ID NO: 3, and an HPV-18 E7 expressing gene set forth in SEQ ID NO: 4.

The present invention relates to a mutant HIV-1 (Human immunodeficiency virus-1) protease capable of effectively enhancing cell-mediated immune responses to DNA vaccination, and use of a nucleic acid encoding the same as a vaccine adjuvant. The mutant HIV-1 protease according to the present invention has inactivated or attenuated proteolytic activity, while retaining chaperone-like activity. When the mutant HIV-1 protease is used together with a DNA vaccine against the HIV-1 envelope protein or the HPV antigen (E6 or E7), cell-mediated immune responses can be effectively enhanced for the prevention or treatment of AIDS or cervical cancer.