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Human endoglin-CD3 bispecific T cell engager antibody induces anti-tumor effect

Theranostics. 2021-04; 
Liping Zhong, Wei Shi, Lu Gan, Xiuli Liu, Yu Huo, Pan Wu, Zhikun Zhang, Tao Wu, Hongmei Peng, Yong Huang, Yongxiang Zhao, Yulin Yuan, Zhiming Deng, Hongliang Tang
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摘要

Endoglin, also known as CD105, is a homo-dimeric membrane glycoprotein required for angiogenesis and serves as a marker for cancer vasculature. In this study, we constructed a bispecific T-cell engager (BiTE) antibody that targets human endoglin and CD3 (hEND-CD3/BiTE). We examined BiTE binding to endoglin-expressing cells and its effects on the cytolytic activity of T cells and cancer development. The effects of hEND-CD3/BiTE, including binding to target cells, T-cell activation, proliferation, and cytotoxicity, were examined in endoglin-expressing 293T cells, human umbilical vascular endothelial cells, tumor-derived endothelial cells, and CD3 T cells. An xenograft tumor model was established using A549 hum... More

关键词

bispecific T-cell engager antibody, endoglin, immune therapy., neoangiogenesis