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Liu V, McGrath K, Albert J, Mayer AP, Busz M, Birchler M, Tang H, Jiang Y. Screening Non-neutralizing Anti-idiotype Antibodies Against a Drug Candidate for Total Pharmacokinetic and Target Engagement Assay. AAPS J 2024; 26:18. [PMID: 38267774 DOI: 10.1208/s12248-024-00892-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024] Open
Abstract
Non-neutralizing anti-idiotype antibodies against a therapeutic monoclonal antibody (mAb) play a crucial role in the creation of total pharmacokinetic (PK) assays and total target engagement (TE) assays during both pre-clinical and clinical development. The development of these anti-idiotype antibodies is challenging. In this study, we utilized a hybridoma platform to produce a variety of anti-idiotype antibodies against GSK2857914, a humanized IgG1 anti-BCMA monoclonal antibody. The candidate clones were evaluated using surface plasmon resonance (SPR) and bio-layer interferometry (BLI) for binding affinity, binding profiling, matrix interference, and antibody pairing determination. We discovered that three anti-idiotype antibodies did not prevent BCMA from binding to GSK2857914. All three candidates demonstrated high binding affinities. One of the three exhibited minimal matrix inference and could pair with the other two candidates. Additionally, one of the three clones was biotinylated as a capture reagent for the total PK assay, and another was labeled with ruthenium as a detection reagent for both the total PK assay and total TE assay. The assay results clearly show that these reagents are genuine non-neutralizing anti-idiotypic antibodies and are suitable for total PK and TE assay development. Based on this and similar studies, we conclude that the hybridoma platform has a high success rate for generating non-neutralizing anti-idiotype antibodies. Our methodology for developing and characterizing non-neutralizing anti-idiotype antibodies to therapeutic antibodies can be generally applied to any antibody-based drug candidate's total PK and total TE assay development.
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Affiliation(s)
- Veronica Liu
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Kelly McGrath
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Josh Albert
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Andrew P Mayer
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Maria Busz
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Mary Birchler
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Huaping Tang
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Yong Jiang
- Bioanalysis, Immunogenicity & Biomarkers GSK R&D, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA.
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