Recombinant Anti-EGFR x Anti-IGF1R Tandem Fab-SAR immunotoxin (Bispecific Immunotoxin)  (BSFAB-SAR029)

Recombinant Anti-EGFR x Anti-IGF1R Tandem Fab-SAR immunotoxin (Bispecific Immunotoxin) is designed to be expressed as the α-Sarcin (SAR) fused to a tandem Fab recognizing EGFR and IGF1R. It contains three chains and a His-tag at the C/N terminus for affinity purification. The two Fd regions are connected by a flexible linker. This bispecific immunotoxin can deliver SAR to antigen-specific cells. Then SAR is a ribonuclease which can inhibit protein synthesis and kill the target cells. The bispecific immunotoxin is designed for the research of Colorectal cancer; Cervical cancer; Breast cancer; Pancreatic cancer therapy.

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