This recombinant monoclonal antibody is designed as a research-grade biosimilar to indusatumab, targeting GUCY2C (Guanylate Cyclase 2C), a transmembrane receptor primarily expressed on intestinal epithelial cells. GUCY2C functions as a key regulator of fluid and electrolyte homeostasis in the gastrointestinal tract through cyclic GMP signaling. This receptor has emerged as a significant biomarker and therapeutic target due to its overexpression in colorectal cancer and other gastrointestinal malignancies, where it is present on over 95% of colorectal tumors while showing restricted expression in normal tissues outside the intestinal epithelium. GUCY2C expression has also been detected in metastatic lesions, making it valuable for cancer research.
Indusatumab, the reference antibody, is a humanized monoclonal antibody that has been investigated in clinical studies for targeted therapy of GUCY2C-positive cancers, including as an antibody-drug conjugate platform. This biosimilar antibody provides researchers with a reliable tool for investigating GUCY2C biology, exploring its role in gastrointestinal cancers, studying tumor-associated signaling pathways, and developing novel diagnostic or therapeutic strategies targeting this receptor.
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