169 results about "Self-Antigens" patented technology

The methods include selectively reducing or expanding T cells according to the antigenic specificity of the T cells. Therefore, the present invention can be used to reduce or eliminate pathogenic T cells that recognize autoantigens, such as beta cell specific T cells. As such, the present invention can be used to prevent, treat or ameliorate autoimmune diseases such as IDDM. Furthermore, the present invention can be used to expand desirable T cells, such as anti-pathogenic T cells to prevent, treat and / or ameliorate autoimmune diseases.

Methods of inducing T cell proliferation and expansion in vivo for treating conditions wherein antigen-specific T cell immune response are therapeutically desirable such as cancer, infection, inflammation, allergy and autoimmunity and for enhancing the efficacy of vaccines are provided. These methods comprise the administration of at least one CD27 agonist, preferably an agonistic CD27 antibody, alone or in association with another moiety such as immune stimulant or immune modulator such as an anti-CD40, OX-40, 4-IBB, or CTLA-4 antibody or an agent that depletes regulatory cells, or a cytokine. These mono and combination therapies may also optionally include the administration of a desired antigen such as a tumor antigen, an allergen, an autoantigen, or an antigen specific to an infectious agent or pathogen against which a T cell response (often CD8+) is desirably elicited.

The present invention relates to a composition for implantation in the subretinal space of an eye, the composition including amniotic membrane, which may be cryopreserved human amniotic membrane, and a plurality of retinal pigment epithelial (RPE) cells or RPE equivalent cells present at the amniotic membrane. The amniotic membrane may be intact, epithelially denuded, or otherwise treated. The invention includes the use of amniotic membrane for the culturing of RPE cells thereon, forming a surgical graft for replacement of Bruch's membrane as a substrate, and for the transplanting of RPE cells to the subretinal space. The composition does not elicit immunological reactions to alloantigens or to RPE specific autoantigens; and exerts anti-inflammatory, and angiogentic, and anti-scarring effects. The invention includes methods and kits for making or using composites including amniotic membrane and RPE cells. Also disclosed is a device for harvesting RPE cells.

The invention features methods for the prevention or treatment of autoimmune disorders in humans. The methods include administering an autoantigen in combination with an oil-based carrier. Included are methods for the prevention and treatment of diabetes mellitus which include treating a patient with a diabetes type 1 autoantigen, e.g., human insulin B-chain or GAD65, and an oil-based carrier approved for human use. Also included are vaccines and kits for the treatment of diabetes mellitus.

Mutations to the tumor suppressor protein p53 have been observed in 40-60% of all human cancers. These mutations are often associated with high nuclear and cytoplasmic concentrations of p53. Since many tumors exhibit highly elevated p53 levels, the protein is an attractive target for cancer immunotherapy. Unfortunately, p53 is an autoantigen that is likely to be tolerated as a self-protein by the immune system. The present invention is based on the discovery that this self-tolerance can be overcome by administration of recombinant modified vaccinia Ankara (MVA) containing a nucleic acid that encodes p53 (rMVAp53). The invention discloses a method of generating a p53-specific CTL-response to tumor cells expressing mutated p53 by administering a composition comprising rMVAp53. Administration of rMVAp53 decreases tumor development, tumor growth, and mortality in a variety of malignant cell types. These effects are enhanced by administration of CTLA-4 blocker and / or CpG oligodeoxynucleotide immunomodulators.

The related autoantibody parallel detection liquid chip comprises: the mcirosphere, self antigen to form coupling body with corresponding microsphere and use red laser to activate red fluorescence on substrate and determine self antigen type by color, and double antigen treated by biotin to combine and activate the phycoerythrin with green laser and determine fluorescent molecule quantity for indirect obtaining content.

Fibronectin type III (10Fn3) binding domains having novel designs that are associated with reduced immunogenicity are provided. The application describes alternative 10Fn3 binding domains in which certain immunogenic regions are not modified when producing a binder in order to maintain recognition as a self antigen by the host organism. The application also describes 10Fn3 binding domains in which HLA anchor regions have been destroyed thereby reducing the immunogenic contribution of the adjoining region. Also provided are 10Fn3 domains having novel combinations of modified regions that can bind to a desired target with high affinity.

The present invention relate to an autoantigen screening method by combining immunoaffinity chromatography, disease-related cell lines, and mass spectrometry technology, which offers greater screening efficiency and speed than known technologies. The method for screening autoantigen by using autoantibodies in patient's body by utilizing the chromatographic column packed with autoantibodies, through the affinity between autoantibody and autoantigen, and the extract of disease-related cell lines or pathological tissues, whereby an autoantigen screening platform is established.

The peptides of the invention comprise (i) a T-cell epitope of an antigen (self or non-self) with a potential to trigger an immune reaction presented by a class II major histocompatibility complex (MHC) determinant and recognized by a CD4+ T cell, more specifically, of an allergen or autoantigen, coupled, optionally, through the use of a linker to (ii) an amino acid sequence having a reducing activity, such as a thioreductase sequence. The peptides may be used for the prevention or treatment of immune disorders, more specifically, of allergic disorders or autoimmune diseases. The present invention thus provides methods of treatment or preventing immune disorders by using such peptides.