Agents that modulate immune cell activation and methods of use thereof
First Claim
1. A method for identifying an agent that modulates an immune response, comprising:
- a) identifying agents which inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, from test agents; and
b) determining whether the agents identified in step a) inhibit the interaction between a PD-1 ligand and a B7 polypeptide;
wherein an agent of step b) which does not inhibit the interaction between a PD-1 ligand and a B7 polypeptide, is identified as an agent that modulates an immune response.
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Accused Products
Abstract
Disclosed are methods for identifying an agent that modulates an immune response. One such method comprises screening for agents which inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, and determining whether the agents inhibit the interaction between a PD-1 ligand and a B7 polypeptide, to identify an agent that inhibits PD-1 ligand and PD-1 polypeptide interaction, while not inhibiting the interaction between a PD-1 ligand and a B7 polypeptide, as an agent that modulates an immune response. Another such method comprises screening for agents which inhibit the interaction between a PD-1 ligand and a B7 polypeptide, and determining whether the agents inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, to identify an agent that inhibits the PD-1 ligand and B7 polypeptide interaction, which does not inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, as an agent that modulates the immune response. Further disclosed is a method for inhibiting the interaction between a B7 polypeptide and a PD-1 ligand, the method comprising contacting an immune cell bearing a PD-1 ligand, or an immune cell bearing a B7 polypeptide, with an agent that inhibits the interaction between the PD-1 ligand and the B7 polypeptide. Such agents may be an anti-PD-1 ligand antibody or a small molecule. Also disclosed is a method for modulating an immune response. The method comprises contacting an immune cell bearing the PD-1 ligand, or an immune cell bearing the PD-1 polypeptide, with an agent that inhibits interactions between the PD-1 ligand and the PD-1 polypeptide, without inhibiting interactions between the PD-1 ligand and a B7 polypeptide, to thereby modulate an immune response. The agent may be an anti-PD-1 ligand antibody or a small molecule.
97 Citations
14 Claims
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1. A method for identifying an agent that modulates an immune response, comprising:
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a) identifying agents which inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, from test agents; and
b) determining whether the agents identified in step a) inhibit the interaction between a PD-1 ligand and a B7 polypeptide;
wherein an agent of step b) which does not inhibit the interaction between a PD-1 ligand and a B7 polypeptide, is identified as an agent that modulates an immune response.
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2. A method for identifying an agent that modulates an immune response, comprising:
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a) identifying agents which inhibit the interaction between a PD-1 ligand and a B7 polypeptide, from test agents; and
b) determining whether the agents identified in step a) inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide;
wherein an agent of step b) which does not inhibit the interaction between a PD-1 ligand and a PD-1 polypeptide, is identified as an agent that modulates an immune response.
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3. A method for inhibiting the interaction between a B7 polypeptide and a PD-1 ligand, comprising:
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a) contacting an immune cell bearing a PD-1 ligand;
orb) contacting an immune cell bearing a B7 polypeptide;
with an agent that inhibits the interaction between the PD-1 ligand and the B7 polypeptide. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for modulating an immune response, comprising:
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a) contacting an immune cell bearing the PD-1 ligand;
orb) contacting an immune cell bearing the PD-1 polypeptide;
with an agent that inhibits interactions between the PD-1 ligand and the PD-1 polypeptide, without inhibiting interactions between the PD-1 ligand and a B7 polypeptide, to thereby modulate an immune response. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification