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88 results about "Programmed death 1" patented technology

Programmed death 1 (PD-1) is involved in the development of proliferative diabetic retinopathy by mediating activation-induced apoptosis.

Preparation method of high-efficiency killer cell preparation adopting immunodetection point dual-block CTL (cytotoxic lymphocyte)

The invention discloses a preparation method of a high-efficiency killer cell preparation adopting an immunodetection point dual-block CTL (cytotoxic lymphocyte). The preparation method comprises steps as follows: step 1), collecting mononuclear cells in peripheral blood; step 2), performing DC (dendritic cell) separation and T cell separation on the separated mononuclear cells with an adherence method; step 3), adding adhering DCs to a serum-free culture medium containing GM-CSF (granulocyte-macrophage colony-stimulating factor) and IL-4 (interleukin-4) for preparation of a DC vaccine; step 4), adding suspending T cells to CD3 and IL-2 for T cell culture and amplification; step 5), adding antigen-supported DCs to the amplified T cells for preparation of the CTL, and adding PD-1 (Programmed death 1) and CTLA-4 (cytotoxic t lymphocyte associated antigen-4) antibodies for preparation of the cell preparation with the dual-block CTL effect. According to the novel technology and the novel method provided by the invention, an immune brake effect is effectively regulated and T cell depletion is retarded by blocking inhibitory molecules on the tumor specific CTL surfaces, so that the tumor cytotoxicity of CTL effector cells is substantially improved.
Owner:浓孚雨医药河北有限公司
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