This product is an unconjugated, non-therapeutic recombinant analog of iladatuzumab, an anti-CD79B monoclonal antibody originally developed as the antibody component of an antibody-drug conjugate. It is a research-grade human IgG1 (kappa) reagent built around the CD79B target and is intended strictly for research use only; it is not the clinical drug and is not for human or veterinary use. Because it reproduces the target-binding specificity of the originator without a cytotoxic payload or therapeutic formulation, it is useful as a defined tool for probing CD79B on normal and malignant B cells. Typical applications include serving as a positive or isotype-matched binding control, epitope and antigen-expression studies, ADCC/ADCP assay setup, and as a naked antibody backbone for in-house antibody-drug conjugate development and payload-conjugation chemistry. It is offered in low-endotoxin grades (research grade below 1 EU/mg; ultra-low below 0.5 EU/mg) suitable for sensitive cell-based work, and is available in bulk milligram-to-gram quantities to support assay development, screening campaigns, and preclinical characterization. Guidance provided here is for ichorbio to review.
CD79B (Ig-beta, B29; UniProt P40259) is a transmembrane signaling subunit of the B-cell antigen receptor (BCR) complex. Together with its partner CD79A (Ig-alpha), it forms a disulfide-linked heterodimer that non-covalently associates with membrane immunoglobulin; the mIg provides antigen recognition while the CD79A/CD79B heterodimer transduces the signal. Each cytoplasmic tail carries an immunoreceptor tyrosine-based activation motif (ITAM) that becomes phosphorylated by SRC-family and SYK kinases upon antigen engagement, initiating downstream signaling that drives B-cell development, activation, and survival. CD79B is required for surface BCR assembly and export, and its expression is largely restricted to the B lineage from pro-B through mature B cells, with loss at terminal plasma-cell differentiation. This B-cell-restricted, internalizing surface expression, retained on many B-cell non-Hodgkin lymphomas, makes CD79B an attractive target for antibody and antibody-drug-conjugate approaches.