Biomaterial Database

Format chain exchange (FORCE) for high-throughput generation of bispecific antibodies in combinatorial binder-format matrices. 2020

Stefan Dengl, and Klaus Mayer, and Felix Bormann, and Harald Duerr, and Eike Hoffmann, and Bianca Nussbaum, and Michael Tischler, and Martina Wagner, and Andreas Kuglstatter, and Lea Leibrock, and Can Buldun, and Guy Georges, and Ulrich Brinkmann

Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich, Penzberg, Germany.

Generation of bispecific antibodies (bsAbs) requires a combination of compatible binders in formats that support desired functionalities. Here, we report that bsAb-matrices can be generated by Format Chain Exchange (FORCE), enabling screening of combinatorial binder/format spaces. Input molecules for generation of bi/multi-valent bsAbs are monospecific entities similar to knob-into-hole half-antibodies, yet with complementary CH3-interface-modulated and affinity-tagged dummy-chains. These contain mutations that lead to limited interface repulsions without compromising expression or biophysical properties of educts. Mild reduction of combinations of educts triggers spontaneous chain-exchange reactions driven by partially flawed CH3-educt interfaces resolving to perfect complementarity. This generates large bsAb matrices harboring different binders in multiple formats. Benign biophysical properties and good expression yields of educts, combined with simplicity of purification enables process automation. Examples that demonstrate the relevance of screening binder/format combinations are provided as a matrix of bsAbs that simultaneously bind Her1/Her2 and DR5 without encountering binder or format-inflicted interferences.

UI	MeSH Term	Description	Entries
D009154	Mutation	Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.	Mutations
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001331	Automation	Controlled operation of an apparatus, process, or system by mechanical or electronic devices that take the place of human organs of observation, effort, and decision. (From Webster's Collegiate Dictionary, 1993)	Automations
D055503	Protein Multimerization	The assembly of the QUATERNARY PROTEIN STRUCTURE of multimeric proteins (MULTIPROTEIN COMPLEXES) from their composite PROTEIN SUBUNITS.	Protein Dimerization,Protein Heteromultimerizaton,Protein Multimer Assembly,Protein Trimerization,Assembly, Protein Multimer,Dimerization, Protein,Heteromultimerizaton, Protein,Heteromultimerizatons, Protein,Multimer Assembly, Protein,Multimerization, Protein,Trimerization, Protein
D057166	High-Throughput Screening Assays	Rapid methods of measuring the effects of an agent in a biological or chemical assay. The assay usually involves some form of automation or a way to conduct multiple assays at the same time using sample arrays.	High-Throughput Screening,High-Throughput Biological Assays,High-Throughput Chemical Assays,High-Throughput Screening Methods,Assay, High-Throughput Biological,Assay, High-Throughput Chemical,Assay, High-Throughput Screening,Biological Assay, High-Throughput,Chemical Assay, High-Throughput,High Throughput Biological Assays,High Throughput Chemical Assays,High Throughput Screening,High Throughput Screening Assays,High Throughput Screening Methods,High-Throughput Biological Assay,High-Throughput Chemical Assay,High-Throughput Screening Assay,High-Throughput Screening Method,High-Throughput Screenings,Screening Assay, High-Throughput,Screening Method, High-Throughput,Screening, High-Throughput
D057809	HEK293 Cells	A cell line generated from human embryonic kidney cells that were transformed with human adenovirus type 5.	293T Cells,HEK 293 Cell Line,HEK 293 Cells,Human Embryonic Kidney Cell Line 293,Human Kidney Cell Line 293,293 Cell, HEK,293 Cells, HEK,293T Cell,Cell, 293T,Cell, HEK 293,Cell, HEK293,Cells, 293T,Cells, HEK 293,Cells, HEK293,HEK 293 Cell,HEK293 Cell
D018033	Antibodies, Bispecific	Antibodies, often monoclonal, in which the two antigen-binding sites are specific for separate ANTIGENIC DETERMINANTS. They are artificial antibodies produced by chemical crosslinking, fusion of HYBRIDOMA cells, or by molecular genetic techniques. They function as the main mediators of targeted cellular cytotoxicity and have been shown to be efficient in the targeting of drugs, toxins, radiolabeled haptens, and effector cells to diseased tissue, primarily tumors.	Bifunctional Antibodies,Bispecific Antibodies,Bispecific Monoclonal Antibodies,Antibodies, Bifunctional,Antibodies, Bispecific Monoclonal,Monoclonal Antibodies, Bispecific