单位：[1]Department of Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, 10 Tieyi Road, Haidian District, Beijing 100038, China[2]Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing 100038, China[3]Peking University Ninth School of Clinical Medicine, Beijing 100038, China[4]Department of Hematology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China[5]Department of Gynecology and Obstetrics, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China[6]Institute of Basic Theory, China Academy of Chinese Medical Sciences, Beijing 100700, China
T cells are important effectors in anti-tumor immunity, and aberrant expression of B7 family members may contribute to tumor evasion. In this study, we analyzed expression of costimulatory molecules on human hematologic tumor cells and explored whether B7-H3, a member of the B7 superfamily, is an effective target for T cell mediated cytotoxicity toward hematologic malignancy. We investigated the bispecific antibody anti-CD3 x anti-B7-H3 (B7-H3Bi-Ab) for its ability to redirect T cells to target B7-H3 positive hematologic tumors, including Thp-1, K562, Daudi cells and a primary culture. The capacity of T cells armed with B7-H3Bi-Ab to kill hematologic tumors was evaluated by lactate dehydrogenase assay, flow cytometry, ELISA, and luciferase quantitative assay at an effector/target ratio of 5:1. Compared with unarmed T cells, B7-H3Bi-Ab-armed T cells exhibited significant cytotoxicity toward hematological tumor cells. Moreover, B7-H3Bi-Ab-armed T cells secreted more IFN-gamma, TNF-alpha, IL-2, and Granzyme B and expressed higher levels of activating marker CD69 compared to unarmed T cells. In conclusion, B7-H3Bi-Ab enhances the ability of T cells to kill hematologic tumor cells, and B7-H3 may serve as a novel target for immunotherapy against hematologic malignancy.
第一作者单位：[1]Department of Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, 10 Tieyi Road, Haidian District, Beijing 100038, China[2]Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing 100038, China
通讯作者：
通讯机构：[1]Department of Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, 10 Tieyi Road, Haidian District, Beijing 100038, China[2]Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing 100038, China[3]Peking University Ninth School of Clinical Medicine, Beijing 100038, China
推荐引用方式(GB/T 7714)：
Sun Xin,Yu Yang,Ma Li,et al.T cell cytotoxicity toward hematologic malignancy via B7-H3 targeting[J].INVESTIGATIONAL NEW DRUGS.2020,38(3):722-732.doi:10.1007/s10637-019-00819-y.
APA：
Sun, Xin,Yu, Yang,Ma, Li,Xue, Xin,Gao, Zhenkui...&Zhang, Man.(2020).T cell cytotoxicity toward hematologic malignancy via B7-H3 targeting.INVESTIGATIONAL NEW DRUGS,38,(3)
MLA：
Sun, Xin,et al."T cell cytotoxicity toward hematologic malignancy via B7-H3 targeting".INVESTIGATIONAL NEW DRUGS 38..3(2020):722-732
