| abstract |
Provided is a nucleic acid encoding a chimeric CD3 fusion protein and an anti-CD3 based bispecific T cell activator (BiTA) element. Also provided are vectors, engineered immune cells comprising the nucleic acid, the usage thereof and methods for preventing tumor. BiTA secreted by CAB-T cells can simultaneously achieve activation of CAB-T cells and endogenous TCR complexes in non-engineered T cells in tumor, and exert an anti-tumor effect. |