@article{75d0be0612a84a3db9910eb9beeb31fb,
title = "Unbiased Combinatorial Screening Identifies a Bispecific IgG1 that Potently Inhibits HER3 Signaling via HER2-Guided Ligand Blockade",
abstract = "HER2-driven cancers require phosphatidylinositide-3 kinase (PI3K)/Akt signaling through HER3 to promote tumor growth and survival. The therapeutic benefit of HER2-targeting agents, which depend on PI3K/Akt inhibition, can be overcome by hyperactivation of the heregulin (HRG)/HER3 pathway. Here we describe an unbiased phenotypic combinatorial screening approach to identify a bispecific immunoglobulin G1 (IgG1) antibody against HER2 and HER3. In tumor models resistant to HER2-targeting agents, the bispecific IgG1 potently inhibits the HRG/HER3 pathway and downstream PI3K/Akt signaling via a “dock & block” mechanism. This bispecific IgG1 is a potentially effective therapy for breast cancer and other tumors with hyperactivated HRG/HER3 signaling. Geuijen et al. identify a bispecific IgG1 antibody against HER2 and HER3 using a phenotypic combinatorial screening approach. This antibody potently inhibits the heregulin/HER3 pathway and downstream PI3K/Akt signaling via a “dock & block” mechanism in tumor models resistant to agents targeting HER2.",
keywords = "bispecific antibody, cancer, HER2, HER3, heregulin, MCLA-128, NRG1, PB4188, PI3K/Akt, zenocutuzumab",
author = "Geuijen, {Cecile A.W.} and {De Nardis}, Camilla and David Maussang and Eric Rovers and Tristan Gallenne and Hendriks, {Linda J.A.} and Therese Visser and Roy Nijhuis and Ton Logtenberg and {de Kruif}, John and Piet Gros and Mark Throsby",
note = "Funding Information: We would like to thank Leo Price and Maarten Klop at Ocello for their contributions to the 3D in vitro models; Stefan Braam at Pluriomics for his contribution to the cardiomyocyte in vitro experiments; Carsten H. Nielsen and Mette M. Jensen at Minerva Imaging for their contributions to the design and execution of the intracranial ST1360B PDX study; Matt Harris and Amos Hedt at Clarity Pharmaceuticals for their contributions to the in vivo imaging study; U-Protein Express BV for the provision of protein expression facilities; Ron Schackmann for database mining and critical reading of the manuscript; Andres Sirulnik, Ernesto Wasserman, Afrodite Lourbakos, Livio Trusolino, and Eduard Batlle for critical reading of the manuscript; Sally Hill for writing and editing assistance; the European Synchrotron Radiation Facility (ESRF) and the Swiss Light Source (SLS) for the provision of synchrotron radiation facilities; and beamline scientists of the ESRF, SLS, and the European Molecular Biology Laboratory for assistance. Financial support was provided by the ManiFold project (grant no. 317371 ) and the BioStruct-X project (grant no. 283570 ) embedded in the European Union's Seventh Framework Programme ( FP7/2007-2013 ), and by the Eurostars ReBAT project (grant no. E!6121 ). Funding Information: We would like to thank Leo Price and Maarten Klop at Ocello for their contributions to the 3D in vitro models; Stefan Braam at Pluriomics for his contribution to the cardiomyocyte in vitro experiments; Carsten H. Nielsen and Mette M. Jensen at Minerva Imaging for their contributions to the design and execution of the intracranial ST1360B PDX study; Matt Harris and Amos Hedt at Clarity Pharmaceuticals for their contributions to the in vivo imaging study; U-Protein Express BV for the provision of protein expression facilities; Ron Schackmann for database mining and critical reading of the manuscript; Andres Sirulnik, Ernesto Wasserman, Afrodite Lourbakos, Livio Trusolino, and Eduard Batlle for critical reading of the manuscript; Sally Hill for writing and editing assistance; the European Synchrotron Radiation Facility (ESRF) and the Swiss Light Source (SLS) for the provision of synchrotron radiation facilities; and beamline scientists of the ESRF, SLS, and the European Molecular Biology Laboratory for assistance. Financial support was provided by the ManiFold project (grant no. 317371) and the BioStruct-X project (grant no. 283570) embedded in the European Union's Seventh Framework Programme (FP7/2007-2013), and by the Eurostars ReBAT project (grant no. E!6121). Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",
year = "2018",
month = may,
day = "14",
doi = "10.1016/j.ccell.2018.04.003",
language = "English",
volume = "33",
pages = "922--936.e10",
journal = "Cancer Cell",
issn = "1535-6108",
publisher = "Cell Press",
number = "5",
}