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EP25820
Poster Title: Quantitative Cell-Based Bioassays for Individual or Combination Immune Checkpoint Immunotherapy
Submitted on 25 May 2017
Author(s): Jamison Grailer, Pete Stecha, Julia Gilden, Denise Garvin, Jim Hartnett, Frank Fan, Mei Cong and Zhi-jie Jey Cheng
Affiliations: Promega Corporation, 2800 Woods Hollow Rd, Madison, WI 53711
Poster Views: 1,439
Submitted on 25 May 2017
Author(s): Jamison Grailer, Pete Stecha, Julia Gilden, Denise Garvin, Jim Hartnett, Frank Fan, Mei Cong and Zhi-jie Jey Cheng
Affiliations: Promega Corporation, 2800 Woods Hollow Rd, Madison, WI 53711
Poster Views: 1,439
Abstract: Immunotherapy aims to boost a patient’s own immune system to fight disease. Activation of T cells via direct stimulation of the T cell receptor or by modulating immune checkpoint pathways are two strategies being employed individually and in combination. Immune checkpoint targets include co-inhibitory (e.g. PD-1, CTLA-4, TIGIT, LAG-3) and co-stimulatory (e.g. GITR, 4-1BB, OX40, CD40) receptors. Summary: Cell-based reporter bioassays overcome the limitations of primary cell-based assays for functional characterization of antibody and other biologics drugs targeting individual or combination immune checkpoint receptors. Here we show a portfolio of immune inhibitory checkpoint bioassays targeting PD-1/PD-L1, TIGIT/CD155, CTLA4/CD80/86 and LAG3/MHCII, that can be used for antibody screening, characterization, potency and stability studies.
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