摘要:
The present invention is a composition of recombinant virus which has incorporated into its genome or portion thereof a gene encoding an antigen to a disease causing agent and a recombinant virus which has incorporated into its genome or portion thereof a gene encoding an immunostimulatory molecule(s) for the purpose of stimulating an immune response against the disease causing agent. Methods of treatment of diseases such as cancer and diseases caused by pathogenic microorganisms is provide using the composition.
摘要:
The present invention is a recombinant vector encoding and expressing at least three or more costimulatory molecules. The recombinant vector may additionally contain a gene encoding one or more target antigens or immunological epitope thereof. The synergistic effect of these costimulatory molecules on the enhanced activation of T cells is demonstrated. The degree of T-cell activation using recombinant vectors containing genes encoding three costimulatory molecules was far greater than the sum of recombinant vector constructs containing one costimulatory molecule and greater than the use of two costimulatory molecules. Results employing the triple costimulatory vectors were most dramatic under conditions of either low levels of first signal or low stimulator to T-cell ratios. This phenomenon was observed with both isolated CD4+ and CD8+ T cells. The recombinant vectors of the present invention are useful as immunogenes and vaccines against cancer and pathogenic micro-organisms, and in providing host cells, including dendritic cells and splenocytes with enhanced antigen-presenting functions.
摘要:
Recombinant pox viruses capable of expressing an immunogenic fragment of the MUC1 tumor-associated antigen are disclosed. The recombinant viruses can be used as vaccines to prevent the establishment of or treat tumors or pre-tumorous cells expressing the MUC1 tumor-associated antigen. The vaccines can be provided as an admixture comprising: (1) a recombinant pox virus encoding the immunogenic fragment of the MUC1 tumor-associated antigen, and (2) a recombinant pox virus encoding a T-cell co-stimulatory factor. The vaccine admixture can be used, e.g., to prevent establishment of tumors or pre-tumorous cells expressing the MUC1 tumor-associated antigen. The MUC1 specific cytotoxic T-cells can be isolated and expanded and used in a method for treating a host having a tumor expressing MCU1 positive tumor cells.
摘要:
The present invention is a composition of recombinant virus which has incorporated into its genome or portion thereof a gene encoding an antigen to a disease causing agent and a recombinant virus which has incorporated into its genome or portion thereof a gene encoding an immunostimulatory molecule(s) for the purpose of stimulating an immune response against the disease causing agent. Methods of treatment of diseases such as cancer and diseases caused by pathogenic microorganisms is provide using the composition.
摘要:
We have discovered that by using a recombinant DNA viral vector, preferably a pox virus vector having at least one insertion site containing a DNA segment encoding the carcinoma self-associated antigen, or a cytotoxic T-cell eliciting epitope thereof, operably linked to a promoter capable of expression in the host, human cytotoxic T-cells specific for the carcinoma self-associated antigens can be produced. The method preferably comprises introducing a sufficient amount of the recombinant pox virus vector into a host to stimulate production of cytotoxic T-cells, and contacting the host with additional antigen at periodic intervals thereafter. The additional antigen may be added by using a second pox virus vector from a different pox genus. In another embodiment, additional antigen is added by contacting the host with antigen. The antigen may be formulated with an adjuvant or in a liposomal formulation. The T-cells can be isolated. The number of T-cells can be expanded by contacting the isolated cytotoxic T-cells alternately with the carcinoma self-associated antigen or an epitope thereof and IL-2. The isolated T-cells can be used in a method for treating a host having a tumor expressing a carcinoma self-associated antigen comprising introducing cytotoxic T-cells specific for the antigen to the host and at at least one periodic interval thereafter introducing to the host a T-cell eliciting epitope of the carcinoma self-associated antigen.
摘要:
It is disclosed herein that Brachyury is expressed in human tumors, specifically in tumors of the small intestine, stomach, kidney, bladder, uterus, ovary, and testes, as well as in lung, colon and prostate carcinomas. Immunogenic Brachyury polypeptides are disclosed herein. These polypeptides can be used in diagnostic assays for Brachyury expression, as well as for inducing an immune response to Brachyury. Polynucleotides encoding the immunogenic Brachyury polypeptides, vectors including these polypeptides, host cells transformed with these vectors, and methods of using these polypeptides, polynucleotides, vectors, and host cells are provided. Methods of diagnosing a Brachyury-expressing cancer are also provided. Exemplary cancers include lung, colon, small intestine, stomach, kidney, bladder, uterus, ovary, and testes and prostate cancers. Methods of treating cancer are also disclosed.
摘要:
Novel MUC-1 epitopes outside the VNTR region are identified. In addition, the first agonist epitope of MUC-1 is described. The employment of agonist epitopes in peptide, protein and vector-based vaccine may well aid in the development of effective vaccines for a range of human cancers.
摘要:
The present disclosure provides humanized COL-1 monoclonal antibodies that retain CEA binding affinity, compared to a parent antibody. Also disclosed herein are humanized COL-1 monoclonal antibodies that have reduced immunogenicity, compared to a parent antibody. The disclosed humanized COL-1 antibodies include substitution of framework residues with residues from the corresponding positions of a homologous human sequence. In several embodiments, methods are disclosed for the use of a humanized COL-1 antibody in the detection or treatment of a CEA-expressing tumor or cell in a subject. Also disclosed is a kit including the humanized COL-1 antibodies described herein.
摘要:
The present invention is a recombinant vector encoding and expressing at least three or more costimulatory molecules. The recombinant vector may additionally contain a gene encoding one or more target antigens or immunological epitope thereof. The synergistic effect of these costimulatory molecules on the enhanced activation of T cells is demonstrated. The degree of T-cell activation using recombinant vectors containing genes encoding three costimulatory molecules was far greater than the sum of recombinant vector constructs containing one costimulatory molecule and greater than the use of two costimulatory molecules. Results employing the triple costimulatory vectors were most dramatic under conditions of either low levels of first signal or low stimulator to T-cell ratios. This phenomenon was observed with both isolated CD4+ and CD8+ T cells. The recombinant vectors of the present invention are useful as immunogenes and vaccines against cancer and pathogenic micro-organisms, and in providing host cells, including dendritic cells and splenocytes with enhanced antigen-presenting functions.
摘要:
A nucleic acid molecule encoding an amino acid sequence consisting of an agonist of a MHC class I binding native sequence of CEA having an amino acid substitution and enhanced immunogenicity compared to the native sequence is described. A vector comprising the nucleic acid molecule, host cell comprising the vector and a kit comprising the encoded agonist peptide are also described.