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Promega Corporation

ADCC Reporter Bioassay, Target Kit (WIL2-S)

The ADCC Reporter Bioassay, Target Kit (WIL2-S), provides two additional reagent components to the ADCC Reporter Bioassay, Core Kit: WIL2-S Target Cells and Control Ab, Anti-CD20, which can be used with Core Kits if desired, providing flexibility to the end user.

We offer the ADCC Reporter Bioassay technology in multiple kit formats to better meet research needs. Please see the Product Resources tab for additional kit offerings for ADCC Reporter Bioassay.

Antibody-dependent cell-mediated cytotoxicity (ADCC) is a mechanism of action (MOA) of antibodies through which virus-infected or other diseased cells are targeted f...

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ADCC Reporter Bioassay, Target (WIL2-S)

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ADCC Reporter Bioassay, Target (WIL2-S)

 Components

  • Control Ab, Anti-CD20

    G721A1 x 5μg
  • ADCC Bioassay Target Cells (WIL2-S)

    G727A1 x .55ml
1 each
- G7013 $ 304.00 Add to cart


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Storage Conditions

Note: The ADCC Reporter Bioassay, Target Kit (WIL2-S), components are shipped separately because of temperature requirements. The ADCC Bioassay Target Cells are shipped on dry ice. The Control Ab, Anti-CD20, is shipped on gel ice.

Upon arrival, immediately transfer the vials of ADCC Bioassay Target Cells for long-term storage below –140°C (freezer or liquid nitrogen vapor phase). The cells are sensitive, and care should be taken when handling. For safety reasons do not store cell vials submerged in liquid nitrogen. Store the Control Ab, Anti-CD20, at 4°C.

For product intended use please see Patents & Disclaimers tab.

Representation of the ADCC Reporter Bioassay.Figure 1. Representation of the ADCC Reporter Bioassay.

Readout is luminescence signal from NFAT response element driving expression of firefly luciferase.

Readout is luminescence signal from NFAT response element driving expression of firefly luciferase.

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Schematic protocol for the ADCC Reporter Bioassay.Figure 2. Schematic protocol for the ADCC Reporter Bioassay.
Specificity of the ADCC Reporter Bioassay.Figure 3. Specificity of the ADCC Reporter Bioassay.

Serial dilutions of rituximab (anti-CD20 chimeric monoclonal antibody drug), trastuzumab (anti-Her2 humanized monoclonal antibody drug) or assay medium control (no antibody) were incubated for 6 hours of induction at 37°C with engineered Jurkat effector cells (ADCC Bioassay Effector Cells) with or without ADCC Bioassay Target Cells (WIL2-S), as indicated. Luciferase activity was quantified using Bio-Glo™ Reagent. Data were fitted using 4PL curve fitting of GraphPad Prism® software.

Serial dilutions of rituximab (anti-CD20 chimeric monoclonal antibody drug), trastuzumab (anti-Her2 humanized monoclonal antibody drug) or assay medium control (no antibody) were incubated for 6 hours of induction at 37°C with engineered Jurkat effector cells (ADCC Bioassay Effector Cells) with or without ADCC Bioassay Target Cells (WIL2-S), as indicated. Luciferase activity was quantified using Bio-Glo™ Reagent. Data were fitted using 4PL curve fitting of GraphPad Prism® software.

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11167LAFigure 4. Bioassay characterization.

The ADCC Reporter Bioassay was characterized in studies that evaluated accuracy, repeatability, intermediate precision and linearity across the 50–150% relative potency range. Dilution ranges for Control Antibody, Anti-CD20, were selected to ensure good coverage of upper and lower asymptotes and sufficient points in the intermediate dose-range for accurate slope and EC50 determinations. A series of relative potency samples, of 50%, 75%, 125% and 150% theoretical relative potency, were evaluated as triplicate dilution series of antibody dose on each of 3 different days. The effector-to-target cell ratio (E:T ratio) was 6:1. The ADCC Reporter Bioassay was characterized using ADCC Bioassay Target Cells (WIL2-S) and ADCC Bioassay Target Cells (Raji). 4PL curve fitting analysis was performed with GraphPad Prism® software, and relative potencies were calculated after parallelism determination using SAS Institute JMP software. Relative potencies were calculated using the 100% reference sample run as a triplicate dilution series in the same assay plate as the test sample.

The ADCC Reporter Bioassay was characterized in studies that evaluated accuracy, repeatability, intermediate precision and linearity across the 50–150% relative potency range. Dilution ranges for Control Antibody, Anti-CD20, were selected to ensure good coverage of upper and lower asymptotes and sufficient points in the intermediate dose-range for accurate slope and EC50 determinations. A series of relative potency samples, of 50%, 75%, 125% and 150% theoretical relative potency, were evaluated as triplicate dilution series of antibody dose on each of 3 different days. The effector-to-target cell ratio (E:T ratio) was 6:1. The ADCC Reporter Bioassay was characterized using ADCC Bioassay Target Cells (WIL2-S) and ADCC Bioassay Target Cells (Raji). 4PL curve fitting analysis was performed with GraphPad Prism® software, and relative potencies were calculated after parallelism determination using SAS Institute JMP software. Relative potencies were calculated using the 100% reference sample run as a triplicate dilution series in the same assay plate as the test sample.

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Detection of antibody glycosylation.Figure 5. Detection of antibody glycosylation.

Rituximab-blended samples containing mixes of fully deglycosylated and fully N-glycosylated antibody were assayed as serial dilutions against serial dilutions of a 100% reference sample of fully N-glycosylated rituximab using the ADCC Reporter Bioassay. Target cells were ADCC Bioassay Target Cells (WIL2-S), and the E:T ratio was 6:1. Biological activity was expressed relative to the 100% control run in the same assay plate and plotted against the % of N-glycosylation present. Linear regression analysis was performed to determine correlation.

ADCC Reporter Bioassay provides antibody activity ranking equivalent to classic LDH release ADCC bioassay.Figure 6. ADCC Reporter Bioassay provides antibody activity ranking equivalent to classic LDH release ADCC bioassay.

The graph shows correlation of relative ADCC activity with fraction of trastuzumab N-glycosylation. For the experiment, trastuzumab was N-deglycosylated using PNGase F, blended with fully N-glycosylated parent preparations to create test samples representing different % N-glycosylation (indicated on the X-axis) and assayed using either the ADCC Reporter Bioassay or a lytic LDH release ADCC bioassay in which PBMCs were used as effector cells. Target cells were SK-BR-3. For the ADCC Reporter Bioassay, ADCC pathway activation was measured by quantification of luciferase activity in the effector cell; for classic ADCC bioassay, LDH release from target cells was measured. For both assays, biological activity reflects downstream effects of effector cell FcγRIIIa crosslinking by antibody bound to target cells. Biological activity was determined and expressed relative to fully N-glycosylated trastuzumab, then plotted against percent N-glycosylated trastuzumab.

The graph shows correlation of relative ADCC activity with fraction of trastuzumab N-glycosylation. For the experiment, trastuzumab was N-deglycosylated using PNGase F, blended with fully N-glycosylated parent preparations to create test samples representing different % N-glycosylation (indicated on the X-axis) and assayed using either the ADCC Reporter Bioassay or a lytic LDH release ADCC bioassay in which PBMCs were used as effector cells. Target cells were SK-BR-3. For the ADCC Reporter Bioassay, ADCC pathway activation was measured by quantification of luciferase activity in the effector cell; for classic ADCC bioassay, LDH release from target cells was measured. For both assays, biological activity reflects downstream effects of effector cell FcγRIIIa crosslinking by antibody bound to target cells. Biological activity was determined and expressed relative to fully N-glycosylated trastuzumab, then plotted against percent N-glycosylated trastuzumab.

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Use Restrictions

G7013 For Research Use Only. Not for Use in Diagnostic Procedures.

Patents - Disclaimers

G7013 NOT FOR MEDICAL DIAGNOSTIC USE. FOR IN VITRO USE ONLY. BY USE OF THIS PRODUCT, RECIPIENT AGREES TO BE BOUND BY THE TERMS OF THIS LIMITED USE STATEMENT. If the recipient is not willing to accept the conditions of this limited use statement, and the product is unused, Promega will accept return of the unused product and provide the recipient with a full refund.
This product may not be further sold or transferred by the recipient and may be used only by the recipient, and then only for (1) research use, (2) drug discovery and development of biologic drugs, (3) quality assurance testing of biologic drugs, and (4) product release assays for biologic drugs. No other commercial use is allowed. “Commercial use” means any and all uses of this product by recipient for monetary or other consideration, including providing a service, information or data to unaffiliated third parties, and resale of this product for any use. Recipient has no right to propagate, modify, derivatize, genetically engineer or otherwise create variations of the Target Cells. In addition, recipient must use Bio-Glo™ Luciferase Assay System purchased from Promega Corporation for all luminescence assays using this product, or contact Promega to obtain a license for use of this product with reagents other than Promega’s. PROMEGA MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH REGARDS TO THIS PRODUCT. The terms of this agreement shall be governed under the laws of the State of Wisconsin, USA.

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