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A Simple Plate Based Assay Using pH Sensor Dye to Screen for Internalizing Antibody
EP23515
Poster Title: A Simple Plate Based Assay Using pH Sensor Dye to Screen for Internalizing Antibody
Submitted on 09 Oct 2015
Author(s): Nidhi Nath, Becky Godat, Cesear Corona, Chad Zimprich, Mark McDougall, Poncho Meisenheimer, Marjeta Urh
Affiliations: Promega Corporation
Poster Views: 1,733
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Poster Information
Abstract: Receptor mediated internalization is a key mechanism of action (MOA) for antibody drug conjugates (ADCs). However, current methods of studying antibody internalization have several limitations including: 1) A multistep process not suitable for screening; 2) Low signal-to-background ratios; 3) Not suitable for kinetic measurements. We have developed a method that mitigates problems associated with traditional internalization assays. The method includes: 1) A water soluble, bright and photo-stable pH sensor dye (pHAb) to study internalization; 2) An optimized method for conjugating pHAb dyes to antibodies directly from the cell media; 3) A 96-well, plate-based assay with high signal-tobackground ratios for real time measurement of internalization and screening internalization.Summary: Receptor mediated internalization is a key mechanism of action (MOA) for antibody drug conjugates (ADCs). However, current methods of studying antibody internalization have several limitations including: 1) A multistep process not suitable for screening; 2) Low signal-to-background ratios; 3) Not suitable for kinetic measurements. We have developed a method that mitigates problems associated with traditional internalization assays.References: Nidhi Nath, Becky Godat, Cesear Corona, Chad Zimprich, Mark McDougall, Poncho Meisenheimer, Marjeta Urh
Promega Corporation, 2800 Woods Hollow Rd, Madison, WI 53711
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