Cytotoxic T lymphocyte activation assay
First Claim
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1. A method for directly assaying cytotoxic T lymphocyte activation comprising the steps of:
- 1) incubating cytotoxic T lymphocytes with one or more lymphocyte activating stimuli selected from the group consisting of immobilized anti-TcR monoclonal antibody, an immunocomplex of anti-TcR monoclonal antibody and immobilized rabbit anti-mouse antibody, a mixture of beta-phorbol-12-myristate-13 acetate and ionophore A23187, and immobilized concanavalin A, said activating stimuli inducing the exocytosis of cytotoxic T lymphocyte granules and resulting in the secretion of BLT-esterase; and
2) quantitatively or qualitatively measuring the secretion of said BLT-esterase resulting from the activation of cytotoxic T lymphocyte by the lymphocyte activating stimuli.
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Abstract
A method is provided for the quantitative study of cytotoxic T-lymphocyte activation by measuring secreted granule-associated BLT esterase activity after incubating the cytotoxic T-lymphocytes with activating stimuli. This method can be used to screen inhibiting (drugs) or activating agents (monoclonal antibodies) (at selected sub-optimal levels of activation of cytotoxic T-lymphocytes.
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11 Claims
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1. A method for directly assaying cytotoxic T lymphocyte activation comprising the steps of:
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1) incubating cytotoxic T lymphocytes with one or more lymphocyte activating stimuli selected from the group consisting of immobilized anti-TcR monoclonal antibody, an immunocomplex of anti-TcR monoclonal antibody and immobilized rabbit anti-mouse antibody, a mixture of beta-phorbol-12-myristate-13 acetate and ionophore A23187, and immobilized concanavalin A, said activating stimuli inducing the exocytosis of cytotoxic T lymphocyte granules and resulting in the secretion of BLT-esterase; and 2) quantitatively or qualitatively measuring the secretion of said BLT-esterase resulting from the activation of cytotoxic T lymphocyte by the lymphocyte activating stimuli. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for screening monoclonal antibodes or pharmacological agents for cytotoxic T lymphocyte activation comprising the steps of:
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1) incubating cytotoxic T lymphocytes with one or more monoclonal antibodies or pharmacological agents; 2) quantitatively or qualitatively measuring the exocytosis of cytotoxic T lymphocyte granules by the resulting secretion of BLT-esterase, said secretion, if any, being induced by cytotoxic T lymphocyte activating monoclonal antibodies or pharmacological agents.
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11. A method for screening monoclonal antibodies or pharmacological agents for use in inhibiting activation of cytotoxic T lymphocytes comprising the steps of:
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1) incubating cytotoxic T lymphocytes with; a) one or more monoclonal antibodies or pharmacological agents, and b) one or more lymphocyte activating stimuli selected from the group consisting of immobilized anti-TcR monoclonal antibody, an immunocomplex of anti-TcR monoclonal antibody and immobilized rabbit anti-mouse antibody, a mixture of beta-phorbol-12-myristate-13 acetate and ionophore A23187, and immobilized concanavalin A, said activating stimuli inducing the exocytosis of cytotoxic T lymphocyte granules resulting in the secretion of BLT-esterase; and 2) quantitatively or qualitatively measuring the exocytosis of cytotoxic T lymphocyte granules by the resulting secretion, if any, of BLT-esterase.
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Specification