Methods of treating HIV infected subjects
First Claim
1. A method for inducing ex vivo proliferation of a population of T cells from an HIV-infected subject to sufficient numbers for use in therapy, comprising contacting a population of T cells ex vivo with a surface having attached thereto:
- an anti-CD3 antibody or CD3-binding fragment thereof, which stimulates a TCR/CD3 complex-associated signal in T cells, and an anti-CD28 antibody or CD28-binding fragment thereof, which stimulates a CD28-sssociated signal in T cells;
wherein the anti-CD3 antibody or CD3-binding fragment thereof, and the anli-CD28 antibody or CD28-binding fragment thereof, are attached on the same surface, the anti-CD3 antibody or CD3-binding fragment thereof and the anti-CD28 antibody or CD28-binding fragment thereof thereby, inducing the T cells to proliferate to sufficient numbers for use in therapy; and
whereby the CD28 stimulation by the anti-CD28 antibody or CD28-binding fragment thereof provides a proliferative advantage for HIV-uninfected CD4+ T cells over HIV-infected CD4+ T cells and a protective effect against HIV infection for uninfected CD4+ T cells.
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Accused Products
Abstract
Methods for inducing a population of T cells to proliferate by activating the population of T cells and stimulating an accessory molecule on the surface of the T cells with a ligand which binds the accessory molecule are described. T cell proliferation occurs in the absence of exogenous growth factors or accessory cells. T cell activation is accomplished by stimulating the T cell receptor (TCR)/CD3 complex or the CD2 surface protein. To induce proliferation of an activated population T cells, an accessory molecule on the surface of the T cells, such as CD28, is stimulated with a ligand which binds the accessory molecule. The T cell population expanded by the method of the invention can be genetically transduced and used for immunotherapy or can be used in methods of diagnosis.
221 Citations
14 Claims
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1. A method for inducing ex vivo proliferation of a population of T cells from an HIV-infected subject to sufficient numbers for use in therapy, comprising contacting a population of T cells ex vivo with a surface having attached thereto:
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an anti-CD3 antibody or CD3-binding fragment thereof, which stimulates a TCR/CD3 complex-associated signal in T cells, and an anti-CD28 antibody or CD28-binding fragment thereof, which stimulates a CD28-sssociated signal in T cells;
wherein the anti-CD3 antibody or CD3-binding fragment thereof, and the anli-CD28 antibody or CD28-binding fragment thereof, are attached on the same surface, the anti-CD3 antibody or CD3-binding fragment thereof and the anti-CD28 antibody or CD28-binding fragment thereof thereby, inducing the T cells to proliferate to sufficient numbers for use in therapy; and
whereby the CD28 stimulation by the anti-CD28 antibody or CD28-binding fragment thereof provides a proliferative advantage for HIV-uninfected CD4+ T cells over HIV-infected CD4+ T cells and a protective effect against HIV infection for uninfected CD4+ T cells. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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2. A method for inducing ex vivo proliferation of a population of T cells from an HIV-infected subject to sufficient numbers for use in therapy, comprising contacting a population of T cells ex vivo with a surface having attached thereto:
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an anti-CD3 antibody or CD3-binding fragment thereof, which stimulates a TCR/CD3 complex-associated signal in T cells, and an anti-CD28 antibody or CD28-binding fragment thereof, which stimulates a CD28-sssociated signal in T cells;
wherein the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, are attached on the same surface, the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, thereby inducing the T cells to proliferate to sufficient numbers for use in therapy; and
whereby the percent CD4+ T cells expressing the cell surface marker CD45RO increases.
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3. A method of treating an HIV-infected subject, comprising contacting a population of T cells from the subject ex vivo with a surface having attached thereto:
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an anti-CD3 antibody or CD3-binding fragment thereof, which stimulates a TCR/CD3 complex-associated signal in T cells, and an anti-CD28 antibody or CD28-binding fragment thereof, which stimulates a CD28-sssociated signal in T cells;
wherein the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, are attached on the same surface, the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, thereby inducing the T cells to proliferate to sufficient numbers for use in therapy;
whereby the CD28 stimulation by the anti-CD28 antibody or CD28-binding fragment thereof provides a proliferative advantage for HIV-iminfected CD4+ T cells over HIV-infected CD4+ T cells and a protective effect against HIV infection for uninfected CD4+ T cells, and readministering the T cells to the subject.
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4. A method of treating an HIV-infected subject, comprising contacting a population of T cells from the subject ex vivo with a surface having attached thereto:
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an anti-CD3 antibody or CD3-binding fragment thereof, which stimulates a TCR/CD3 complex-associated signal in T cells, and an anti-CD28 antibody or CD28-binding fragment thereof, which stimulates a CD28-sssociated signal in T cells;
wherein the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, are attached on the same surface, the anti-CD3 antibody or CD3-binding fragment thereof, and the anti-CD28 antibody or CD28-binding fragment thereof, thereby inducing the T cells to proliferate to sufficient numbers for use in therapy;
whereby the percent of CD4+ T cells expressing the cell surface marker CD45RO increases, and readministering the T cells to the subject.
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Specification