Potent and conditional redirected T cell killing of tumor cells using Half DVD-Ig
Philip D. Bardwell , Matthew M. Staron , Junjian Liu , Qingfeng Tao , Susanne Scesney , Gail Bukofzer , Luis E. Rodriguez , Chee-Ho Choi , Jennifer Wang , Qing Chang , Feng Dong , Cherrie Donawho , Jieyi Wang , Christine M. Grinnell , Edit Tarcsa , Charles Hutchins , Tariq Ghayur , Jijie Gu
Protein Cell ›› 2018, Vol. 9 ›› Issue (1) : 121 -129.
Potent and conditional redirected T cell killing of tumor cells using Half DVD-Ig
Novel biologics that redirect cytotoxic T lymphocytes (CTLs) to kill tumor cells bearing a tumor associated antigen hold great promise in the clinic. However, the ability to safely and potently target CD3 on CTL toward tumor associated antigens (TAA) expressed on tumor cells remains a challenge of both technology and biology. Herein we describe the use of a Half DVD-Ig format that can redirect CTL to kill tumor cells. Notably, Half DVD-Ig molecules that are monovalent for each specificity demonstrated reduced non-specific CTL activation and conditional CTL activation upon binding to TAA compared to intact tetravalent DVD-Ig molecules that are bivalent for each specificity, while maintaining good drug like properties and appropriate PK properties.
DVD-Ig / Half DVD-Ig / Halfbody / epidermal growth factor receptor / redirected T-cell cytotoxicity / rCTL
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The Author(s) 2017. This article is an open access publication
Supplementary files
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