Title: A GPC2 antibody-drug conjugate is efficacious against neuroblastoma and small-cell lung cancer via binding a conformational epitope

Journal Article · · Cell Reports Medicine

Glypican 2 (GPC2) is a MYCN-regulated, differentially expressed cell-surface oncoprotein and target for immune-based therapies in neuroblastoma. Here, we build on GPC2’s immunotherapeutic attributes by finding that it is also a highly expressed, MYCN-driven oncoprotein on small-cell lung cancers (SCLCs), with significantly enriched expression in both the SCLC and neuroblastoma stem cell compartment.By solving the crystal structure of the D3-GPC2-Fab/GPC2 complex at 3.3 Å resolution, we further illustrate that the GPC2-directed antibody-drug conjugate (ADC; D3-GPC2-PBD), that links a human GPC2 antibody (D3) to DNA-damaging pyrrolobenzodiazepine (PBD) dimers, binds a tumor-specific, conformation-dependent epitope of the core GPC2 extracellular domain. We then show that this ADC induces durable neuroblastoma and SCLC tumor regression via induction of DNA damage, apoptosis, and bystander cell killing, notably with no signs of ADC-induced in vivo toxicity. Furthermore, these studies provide preclinical data to support the clinical translation of ADCs targeting GPC2.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1816158
Journal Information:
Cell Reports Medicine, Journal Name: Cell Reports Medicine Journal Issue: 7 Vol. 2; ISSN 2666-3791
Publisher:
Cell PressCopyright Statement
Country of Publication:
United States
Language:
English

References (60)

Inactivation of Wnt signaling by a human antibody that recognizes the heparan sulfate chains of glypican-3 for liver cancer therapy: Hepatology journal June 2014
Glypican-3-Specific Antibody Drug Conjugates Targeting Hepatocellular Carcinoma: Hepatology journal February 2019
A transplantable TH-MYCN transgenic tumor model in C57Bl/6 mice for preclinical immunological studies in neuroblastoma: Novel immunological mouse model for neuroblastoma journal September 2013
Clustal Omega for making accurate alignments of many protein sequences: Clustal Omega for Many Protein Sequences journal October 2017
Expression and clinical significance of stem cell marker CD133 in human neuroblastoma journal February 2008
Antibody–drug conjugates for cancer journal August 2019
Glycerophosphodiesterase GDE2 Promotes Neuroblastoma Differentiation through Glypican Release and Is a Marker of Clinical Outcome journal October 2016
Harnessing the Immunotherapy Revolution for the Treatment of Childhood Cancers journal April 2017
Identification of GPC2 as an Oncoprotein and Candidate Immunotherapeutic Target in High-Risk Neuroblastoma journal September 2017
Molecular, Pathological, Radiological, and Immune Profiling of Non-brainstem Pediatric High-Grade Glioma from the HERBY Phase II Randomized Trial journal May 2018
Tumor stem cells derived from glioblastomas cultured in bFGF and EGF more closely mirror the phenotype and genotype of primary tumors than do serum-cultured cell lines journal May 2006
Genomic Profiling of Childhood Tumor Patient-Derived Xenograft Models to Enable Rational Clinical Trial Design journal November 2019
Structural Basis of Enhanced Crystallizability Induced by a Molecular Chaperone for Antibody Antigen-Binding Fragments journal February 2018
Functional expression of ABCG2 transporter in human neural stem/progenitor cells journal May 2005
The Dynamic Epigenetic Landscape of the Retina During Development, Reprogramming, and Tumorigenesis journal May 2017
A distinct gene expression signature characterizes human neuroblastoma cancer stem cells journal September 2015
Glypican-3 Targeted Human Heavy Chain Antibody as a Drug Carrier for Hepatocellular Carcinoma Therapy journal May 2015
Immunotoxin targeting glypican-3 regresses liver cancer via dual inhibition of Wnt signalling and protein synthesis journal March 2015
Comprehensive genomic analysis identifies SOX2 as a frequently amplified gene in small-cell lung cancer journal September 2012
Fusion of TTYH1 with the C19MC microRNA cluster drives expression of a brain-specific DNMT3B isoform in the embryonal brain tumor ETMR journal December 2013
The Phyre2 web portal for protein modeling, prediction and analysis journal May 2015
Small-cell lung cancer: what we know, what we need to know and the path forward journal December 2017
Neuroblastoma journal November 2016
Transcriptomic profiling of 39 commonly-used neuroblastoma cell lines journal March 2017
Mammalian Notum induces the release of glypicans and other GPI-anchored proteins from the cell surface journal February 2008
Anti-GD2 Antibody with GM-CSF, Interleukin-2, and Isotretinoin for Neuroblastoma journal September 2010
Tisagenlecleucel in Children and Young Adults with B-Cell Lymphoblastic Leukemia journal February 2018
Recent Advances in Neuroblastoma journal June 2010
Toward the structural genomics of complexes: Crystal structure of a PE/PPE protein complex from Mycobacterium tuberculosis journal May 2006
Therapeutically targeting glypican-2 via single-domain antibody-based chimeric antigen receptors and immunotoxins in neuroblastoma journal July 2017
Isolation of state-dependent monoclonal antibodies against the 12-transmembrane domain glucose transporter 4 using virus-like particles journal May 2018
Crystal Structure of N-Glycosylated Human Glypican-1 Core Protein journal April 2012
STAR: ultrafast universal RNA-seq aligner journal October 2012
ConSurf 2016: an improved methodology to estimate and visualize evolutionary conservation in macromolecules journal May 2016
Dynamic chromosomal tuning of a novel GAU1 lncing driver at chr12p13.32 accelerates tumorigenesis journal May 2018
Phaser crystallographic software journal July 2007
XDS journal January 2010
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Features and development of Coot journal March 2010
Bystander killing effect of DS ‐8201a, a novel anti‐human epidermal growth factor receptor 2 antibody–drug conjugate, in tumors with human epidermal growth factor receptor 2 heterogeneity journal June 2016
GDE2 Promotes Neurogenesis by Glycosylphosphatidylinositol-Anchor Cleavage of RECK journal January 2013
The Genotype-Tissue Expression (GTEx) pilot analysis: Multitissue gene regulation in humans journal May 2015
Integrative Analysis of Complex Cancer Genomics and Clinical Profiles Using the cBioPortal journal March 2013
Potent Neutralization of Hendra and Nipah Viruses by Human Monoclonal Antibodies journal January 2006
CD133 + Cancer Stem-like Cells in Small Cell Lung Cancer Are Highly Tumorigenic and Chemoresistant but Sensitive to a Novel Neuropeptide Antagonist journal January 2014
Intracellular Released Payload Influences Potency and Bystander-Killing Effects of Antibody-Drug Conjugates in Preclinical Models journal February 2016
Antibody–Drug Conjugates: Future Directions in Clinical and Translational Strategies to Improve the Therapeutic Index journal April 2019
Anetumab Ravtansine: A Novel Mesothelin-Targeting Antibody–Drug Conjugate Cures Tumors with Heterogeneous Target Expression Favored by Bystander Effect journal April 2014
The cBio Cancer Genomics Portal: An Open Platform for Exploring Multidimensional Cancer Genomics Data: Figure 1. journal May 2012
RSEM: accurate transcript quantification from RNA-Seq data with or without a reference genome journal August 2011
Irinotecan, Temozolomide, and Dinutuximab With GM-CSF in Children With Refractory or Relapsed Neuroblastoma: A Report From the Children’s Oncology Group journal July 2020
Genomic Landscape Survey Identifies SRSF1 as a Key Oncodriver in Small Cell Lung Cancer journal April 2016
Detection and Characterization of CD133+ Cancer Stem Cells in Human Solid Tumours journal October 2008
A Versatile Viral System for Expression and Depletion of Proteins in Mammalian Cells journal August 2009
Human Monoclonal Antibody Targeting the Heparan Sulfate Chains of Glypican-3 Inhibits HGF-Mediated Migration and Motility of Hepatocellular Carcinoma Cells journal September 2015
Characteristics of Stem Cells from Human Neuroblastoma Cell Lines and in Tumors journal November 2004
Construction of an immunotoxin, HN3-mPE24, targeting glypican-3 for liver cancer therapy journal July 2016
Non-coding and Coding Transcriptional Profiles Are Significantly Altered in Pediatric Retinoblastoma Tumors journal April 2019
Site-specific antibody-drug conjugation through an engineered glycotransferase and a chemically reactive sugar journal September 2014
Collaboration gets the most out of software journal September 2013