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DELFIA® EuTDA Cytotoxicity Reagents

DELFIA® TRF (time-resolved fluorescence) cytotoxicity kit for measuring chemical cytotoxicity, cell-mediated cytotoxicity, and antibody-dependent cell cytotoxicity (ADCC). This kit has the same assay principle as a chromium release assay, with target cells loaded with a BATDA ligand instead of 51Cr. There is no requirement for specially-engineered cells.

For research use only; not for diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption & disposal requirements under European REACH regulations (EC 1907/2006).

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Overview

DELFIA time-resolved fluorescence cell cytotoxicity assays offer a non-radioactive method to Chromium 51, for use in cell-mediated cytotoxicity and antibody-dependent cell cytotoxicity (ADCC) studies. The method is based on loading cells with an acetoxymethyl ester of a fluorescence enhancing ligand. After the ligand has penetrated the cell membrane the ester bonds are hydrolyzed within the cell to form a hydrophilic ligand, which no longer passes through the membrane. After cytolysis the released ligand is introduced to a europium solution to form a fluorescent chelate. The measured signal correlates directly with the amount of lysed cells.

Reagents for the assay are also available separately:

  • Lysis buffer (30 mL), #4005-0010
  • DELFIA Eu-Solution (200 mL), #C135-100
  • DELFIA BATDA labeling reagent (50 µL), #C136-100

Selected references:

  1. Lazar, G. A. et al. Engineered antibody Fc variants with enhanced effector function. PNAS 103, 4005–4010 (2006).
  2. Tsai, C.-Y. et al. Type I IFNs and IL-18 Regulate the Antiviral Response of Primary Human γδ T Cells against Dendritic Cells Infected with Dengue Virus. The Journal of Immunology 194, 3890–3900 (2015).
  3. Mehta, R. S., Chen, X., Antony, J., Boyiadzis, M. & Szabolcs, P. Generating Peripheral Blood Derived Lymphocytes Reacting Against Autologous Primary AML Blasts. J Immunother 39, 71–80 (2016).
  4. Snyder, K. M. et al. Expression of a Recombinant High Affinity IgG Fc Receptor by Engineered NK Cells as a Docking Platform for Therapeutic mAbs to Target Cancer Cells. Front Immunol 9, (2018).
  5. Yu, T., Qiao, C., Lv, M. & Tang, L. Novel anti-CD38 humanized mAb SG003 possessed enhanced cytotoxicity in lymphoma than Daratumumab via antibody-dependent cell-mediated cytotoxicity. BMC Biotechnology 19, 28 (2019).

Specifications

Automation Compatible Yes
Detection Method Time-Resolved Fluorescence (TRF), DELFIA TRF
Experimental Type In vitro
Product Brand Name DELFIA
Shipping Condition Blue Ice
Unit Size 1 Kit
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Brochure

Drug Discovery Screening Solutions Brochure

Find out about our range of integrated solutions for drug discovery screening in this e-brochure.

Our screening solutions for high-throughput screening, phenotypic screening and data analysis help to streamline drug discovery workflows in labs across the globe. Our portfolio includes automated liquid handling, assays and reagents, imaging and detection systems, and informatics.

Working independently or together, with our solutions you can achieve consistent and accurate results. By accelerating the identification and characterization of effective and safe drug candidates, the PerkinElmer portfolio enables you to optimize efficiency in your lab and deliver more actionable, real-world results.

Download the brochure to learn more about how we can partner with you so that you can discover smarter, more effective, data-driven breakthroughs in the critical screening stages of drug discovery and development.

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Manual

DELFIA Cell Cytotoxicity Manual

This product is intended for loading of cells to be used in short term cytotoxicity tests performed utilizing time-resolved fluorometry in the detection.

PDF 55 KB