IMMUNOMODULATING TUMOR NECROSIS FACTOR RECEPTOR 25 (TNFR25) AGONISTS, ANTAGONISTS, AND IMMUNOTOXINS
First Claim
1. A method for enhancing expansion of antigen-specific CD8 T cells in a subject, the method comprising the steps of:
- (a) administering to the subject an antigenic composition comprising a cell expressing a gp96-Ig protein engineered to be secreted from the cell, and a cognate antigen of the antigen-specific CD8 T cells, wherein the cognate antigen is a non-self antigen, and wherein administration of the antigenic composition is effective for inducing expansion of the antigen-specific CD8 T cells in the subject; and
(b) administering to the subject a TNFR25 agonist in an amount effective to enhance the expansion of the antigen-specific CD8 T cells induced in step (a).
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Accused Products
Abstract
This document provides novel compositions and methods utilizing immunomodulating agents that can stimulate or indirectly augment the immune system, or can have an immunosuppressive effect. TNFR25 agonists disclosed herein have an anti-inflammatory and healing effect. They can be used, e.g., to treat disease caused by asthma and chronic inflammation, such as inflammatory bowel diseases including ulcerative colitis and Crohn'"'"'s Disease. TNFR25 antagonists disclosed herein can inhibit CD8 T cell-mediated cellular immune responses and can, for example, mitigate organ or tissue rejection following a tissue transplantation. TNFR25 agonists disclosed herein represent biological response modifiers that alter the interaction between the body'"'"'s cellular immune defenses and cancer cells to boost, direct, or restore the body'"'"'s ability to fight the cancer when given with tumor vaccines. TNFR25 specific immunotoxins disclosed herein are also capable of increasing the effectiveness of a chemotherapeutic regimen by depleting a cancer patient of naturally occurring immunosuppressive cells.
10 Citations
20 Claims
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1. A method for enhancing expansion of antigen-specific CD8 T cells in a subject, the method comprising the steps of:
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(a) administering to the subject an antigenic composition comprising a cell expressing a gp96-Ig protein engineered to be secreted from the cell, and a cognate antigen of the antigen-specific CD8 T cells, wherein the cognate antigen is a non-self antigen, and wherein administration of the antigenic composition is effective for inducing expansion of the antigen-specific CD8 T cells in the subject; and (b) administering to the subject a TNFR25 agonist in an amount effective to enhance the expansion of the antigen-specific CD8 T cells induced in step (a). - View Dependent Claims (2, 5, 6, 7, 8, 9)
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3. (canceled)
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4. (canceled)
- 10. An antigenic composition comprising a cell expressing a tumor antigen and an immunostimulatory agent that enhances an immune response to the antigenic composition, wherein the tumor antigen is a cognate antigen for antigen-specific CD8 T cells in a subject, and wherein administration of the antigenic composition to the subject is effective for inducing expansion of the antigen-specific CD8 T cells in the subject.
- 16. A tumor vaccine comprising a tumor antigen and a TNFR25 agonist.
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19. A tumor vaccine comprising a tumor antigen and a polypeptide encoded by a sequence that hybridizes under stringent conditions to SEQ ID NO:
- 3 and/or SEQ ID NO;
7, wherein said sequence encodes an amino acid sequence capable of binding a TNFR25 receptor protein.
- 3 and/or SEQ ID NO;
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20. An expression vector comprising a nucleic acid sequence that hybridizes under stringent conditions to SEQ ID NO:
- 3 and/or SEQ ID NO;
7, wherein said sequence encodes an amino acid sequence capable of binding a TNFR25 receptor protein.
- 3 and/or SEQ ID NO;
Specification