| Code | CSB-RA007765MB1HU |
| Size | US$9799 |
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This recombinant monoclonal antibody is developed as a research-grade biosimilar to AV-203, targeting ERBB3 (ErbB-3, HER3), a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. ERBB3 plays a critical role in cellular signaling by heterodimerizing with other ErbB family members, particularly ERBB2, to activate downstream PI3K/AKT and MAPK pathways that regulate cell proliferation, survival, and differentiation. Unlike other ErbB receptors, ERBB3 possesses impaired intrinsic kinase activity but contains multiple PI3K-binding sites, making it a potent activator of oncogenic signaling. Aberrant ERBB3 expression and signaling have been implicated in various malignancies, including breast, ovarian, lung, and colorectal cancers, and contribute to therapeutic resistance against EGFR and ERBB2-targeted therapies.
AV-203 is a therapeutic antibody designed to inhibit ERBB3 signaling by blocking ligand binding and receptor activation. This biosimilar provides researchers with a valuable tool for investigating ERBB3-mediated oncogenic mechanisms, studying cancer cell signaling pathways, evaluating combination therapy strategies, and exploring biomarkers of treatment resistance in preclinical models.
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