Mfg Part Number
Ab02390-23.0

Vector Labs Ab02390-23.0 Anti-CD3e [Visilizumab (HuM291)], Rabbit IgG, kappa (200 μg)

Quick Overview
The original antibody was generated by immunizing BALB/c mice with activated human T cells as immunogens.
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Product Class:Purified
Clone ID:Visilizumab (HuM291)
Synonyms:T-cell surface glycoprotein CD3 epsilon chain; T-cell surface antigen T3/Leu-4 epsilon chain; CD3-ε
Amount:200 μg
Application Codes Clone:FC; Therapeutic; immunesuppression
Shipping Temperature:Wet Ice
Buffer Composition:PBS with 0.02% Proclin 300.
Original Format:IgG1
Storage Temperature:Store at 4⁰C for up to 3 months. For longer storage, aliquot and store at -20⁰C.
Chimeric Use Statement:This chimeric rabbit antibody was made using the variable domain sequences of the original Human IgG1 format, for improved compatibility with existing reagents, assays and techniques.
Specificity Statement:This antibody recognises the human CD3 epsilon. This antibody also competes with OKT3 (Muromonab) for binding site on the human T cells suggesting that they bind overlapping or closely spaced epitopes.
Application Notes:This antibody is derived from its a murine parent antibody called M291. HuM291 was significantly less mitogenic to T cells in vitro as compared to OKT3 and induced the release of much lower levels of the cytokines tumor necrosis factor-α, interferon-γ, and interleukin-10. HuM291 still retained the ability to modulate the CD3 complex and inhibit the mixed lymphocyte reaction. This antibody competes with OKT3 for binding to human T cells, which was detected using flow cytometry (PMID: 10480417). In vitro studies using chimpanzee peripheral blood mononuclear cells (PBMCs), HuM291 was reported to be less mitogenic than OKT3 and effectively depleted peripheral T cells without eliciting clinical signs of cytokine release syndrome, and recovered T cells were functionally normal (PMID: 10480415). Phase 1 trial of HuM291 in patients receiving renal allografts suggested that it was well tolerated and rapidly depleted circulating T cells in a dose-dependent manner and was associated with only mild to moderate symptoms of cytokine release (PMID: 11152101). Treatment with visilizumab (HuM291) in severe steroid-refractory ulcerative colitis induced symptomatic response and clinical response (PMID: 19714757). The (99m)Tc labeled version of this antibody is also recommended for imaging of human T cells and study of human T-lymphocyte trafficking and lymphocytic infiltration of tissues and organs (PMID: 19759100). This antibody is also reported to have some activity in advanced glucocorticoid-refractory acute graft-versus-host disease (GVHD) (PMID: 11929757).
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Brand Vector Labs
UNSPSC 12161500