39 results about "Self-protein" patented technology

A method is disclosed for inducing cell-mediated immunity against cellular antigens. More specifically, the invention provides for a method for inducing cytotoxic T-lymphocyte immunity against weak antigens, notably self-proteins. The method entails that antigen presenting cells are induced to present at least one CTL epitope of the weak antigen and at the same time presenting at least one foreign T-helper lymphocyte epitope. In a preferred embodiment, the antigen is a cancer specific antigen, e.g. PSM, Her2, or FGF8b. The method can be exercised by using traditional polypeptide vaccination, but also by using live attenuated vaccines or nucleic acid vaccination. The invention furthermore provides immunogenic analogues of PSM, Her2 and FGF8b, as well as nucleic acid molecules encoding these analogues. Also vectors and transformed cells are disclosed. The invention also provides for a method for identification of immunogenic analogues of weak or non-immunogenic antigens.

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 present invention relates to an isolated polypeptide useful for immunisation against self-antigens. In particular the invention relates to a self-protein that is capable of raising auto-antibodies when administered in vivo. The invention particularly relates to rendering human cytokines immunogenic in humans. The invention further relates to pharmaceutical compositions comprising such compounds and their use in medicine and to methods for their production.

The present invention relates to vaccines that are made in transgenic soybeans for use in humans, animals of agricultural importance, pets, and wildlife. These vaccines are used as vaccines against viral, bacterial, fungal, parasitic or prion related diseases, cancer antigens, toxins, and autologous or self proteins. The transgenic soybeans of the instant invention also can be used for inducing tolerance to allergens or tolerance to autoimmune antigens, wherein an individual shows hypersensitivity to said allergen or has developed autoimmunity to autologous or self proteins, respectively. The invention also relates to prophylatically treating individuals and / or populations prior to showing hypersensitivity to allergens. Other aspects of the invention include using the transgenic soybeans as an oral contraceptive, and the expression of protein adjuvants in transgenic soybeans.

The present invention relates to an immunogen-carrier having immunopotentiating or adjuvant properties. More particularly, the immunogen-carrier is a virus-like particle (VLP) from the family of potexvirus, and most particularly the papaya mosaic virus. The VLP produced by recombinant techniques is in fusion with one of its own proteins a protein immunogen. The above VLP and a protein or a protein extract from a viral, bacterial or parasital pathogen may be used as a vaccine.

The invention relates to a composition for the treatment of various cancers. The composition is a vaccine containing sequences of EDB, EDA, annexin A1, endosialin, C domain of tenascin C or magic roundabout (MR) or fragments thereof as single or in a combination coupled to one or several heterologous foreign carrier molecules. The vaccine will produce antibodies that are directed against self proteins which are preferentially expressed in and around tumor vessels. The vaccine is preferably administrated together with an adjuvant.

The invention relates to a process for the recombinant production of a heterologous polypeptide of interest, comprising, (i) cultivation of a bacterial host cell which is transformed with an expression vector which comprises a nucleic acid molecule which codes for a fusion polypeptide, the fusion polypeptide comprising a derivative of an autoprotease Npro of Pestivirus, wherein at least one cysteine residue of the naturally occuring autoprotease Npro of Pestivirus is replaced by another amino acid residue, and a second polypeptide which is connected to the first polypeptide at the C-terminus of the first polypeptide in a manner such, that the second polypeptide is capable of being cleaved from the fusion polypeptide by the autoproteolytic activity of the first polypeptide, said second polypeptide being a heterologous polypeptide, wherein cultivation occurs under conditions which cause expression of the fusion polypeptide and formation of corresponding cytoplasmic inclusion bodies, (ii) isolation of the inclusion bodies from the host cell, (iii) solubilization of the isolated inclusion bodies, (iv) induction of autoproteolytic cleavage of the heterologous polypeptide of interest from the fusion polypeptide, and (v) isolation of the cleaved heterologous polypeptide of interest.

Type 1 diabetes (T1D) patients make antibodies to self-proteins that are potential biomarkers for early detection and risk prediction. We have identified seventeen antigens as biomarkers for early diagnosis and risk prediction of T1D, including the antigens MLH1, MTIF3, PPIL2, NUP50, TOX4, FIGN, C9orf142, ZNF280D, HES1, QRFPR, CTRC, SNX6, SYTL4, ELA2A, IGRP, PAX6, and HMGN3.

The invention discloses a pseudorabies virus LLT region delta Intron strain as well as a construction method and application. The construction method comprises the following steps: A. PCR amplification of upstream and downstream homologous arms of Intron; B. construction of a transfection vector, so that fragments of upstream and downstream homologous arms of Intron gene are cloned onto a pcDNA3.1 (+) vector by virtue of a molecular cloning technique; C. construction and identification of a PRV-delta Intron recombinant virus; D. in-vitro culture biological characteristics of the PRV-delta Intron recombinant virus, wherein PK-15 cells are inoculated to a prepared pseudorabies virus delta Intron gene-deleted strain; and E. animal experiment. The prepared pseudorabies virus delta Intron gene-deleted strain is infected by Balb / c mice, due to the deletion of the Intron, toxicity is greatly reduced. A regulatory effect on host and autologous protein encoding gene loses with the deletion of a miRNA expression region of the strain, causing drop in toxicity; therefore, the strain has a potential value of being developed as a novel vaccine. The method is easy to implement and is simple and convenient to operate, and the deleted region is stable in heredity and free from recurrence. The strain is used for preparing a novel pseudorabies vaccine for preventing and controlling porcine pseudorabies.