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Bryniarski MA, Tuhin MTH, Shomin CD, Nasrollahi F, Ko EC, Soto M, Chung K, Poon-Andersen C, Primack R, Wong D, Ojeda E, Chung J, Cook KD, Conner KP. Utility of Cellular Measurements of Non-Specific Endocytosis to Assess the Target-Independent Clearance of Monoclonal Antibodies. J Pharm Sci 2024:S0022-3549(24)00255-7. [PMID: 39009346 DOI: 10.1016/j.xphs.2024.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 07/10/2024] [Accepted: 07/10/2024] [Indexed: 07/17/2024]
Abstract
Past studies have demonstrated higher clearance for monoclonal antibodies possessing increased rates of non-specific endocytosis. However, this metric is oftentimes evaluated indirectly using biophysical techniques or cell surface binding studies that may not provide insight into the specific rates of cellular turnover. Furthermore, few examples evaluating non-specific endocytosis have been reported for a therapeutic antibody that reached clinical assessment. In the current report, we evaluated a therapeutic human immunoglobulin G2 monoclonal antibody targeted against the interleukin-4 receptor alpha chain (IL-4Rα) that exhibited elevated target independent clearance in previous Phase 1 and 2 studies. We confirmed high non-specific clearance of the anti-IL-4Rα antibody as compared to a reference antibody during pharmacokinetic assessments in wild type mice where target-mediated disposition was absent. We then developed a cell-based method capable of measuring cellular protein endocytosis and demonstrated the anti-IL-4Rα antibody exhibited marked non-specific uptake relative to the reference compound. Antibody homology modeling identified the anti-IL-4Rα antibody possessed positive charge patches whose removal via targeted mutations substantially reduced its non-specific endocytosis. We then expanded the scope of the study by evaluating panels of both preclinical and clinically relevant monoclonal antibodies and demonstrate those with the highest rates of non-specific uptake in vitro exhibited elevated target independent clearance, low subcutaneous bioavailability, or both. Our results support the observation that high non-specific endocytosis is a negative attribute in monoclonal antibody development and demonstrate the utility of a generic cell-based screen as a quantitative tool to measure non-specific endocytosis of protein therapeutics at the single-cell level.
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Affiliation(s)
- Mark A Bryniarski
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA.
| | - Md Tariqul Haque Tuhin
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Carolyn D Shomin
- Department of Biologics, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - Fatemeh Nasrollahi
- Process Development; Pre-Pivotal Drug Product Technologies, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - Eunkyung Clare Ko
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Marcus Soto
- Pharmacokinetics & Drug Metabolism, Amgen Research, 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - Kyu Chung
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Carrie Poon-Andersen
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Ronya Primack
- Pharmacokinetics & Drug Metabolism, Amgen Research, 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - Diana Wong
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Esperanza Ojeda
- Pharmacokinetics & Drug Metabolism, Amgen Research, 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - John Chung
- Process Development; Pre-Pivotal Drug Product Technologies, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - Kevin D Cook
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA
| | - Kip P Conner
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 750 Gateway Blvd, Suite 100, South San Francisco, CA, 94080, USA.
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Pocai A. G protein-coupled receptors and obesity. Front Endocrinol (Lausanne) 2023; 14:1301017. [PMID: 38161982 PMCID: PMC10757641 DOI: 10.3389/fendo.2023.1301017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
G protein-coupled receptors (GPCRs) have emerged as important drug targets for various chronic diseases, including obesity and diabetes. Obesity is a complex chronic disease that requires long term management predisposing to type 2 diabetes, heart disease, and some cancers. The therapeutic landscape for GPCR as targets of anti-obesity medications has undergone significant changes with the approval of semaglutide, the first peptide glucagon like peptide 1 receptor agonist (GLP-1RA) achieving double digit weight loss (≥10%) and cardiovascular benefits. The enhanced weight loss, with the expected beneficial effect on obesity-related complications and reduction of major adverse cardiovascular events (MACE), has propelled the commercial opportunity for the obesity market leading to new players entering the space. Significant progress has been made on approaches targeting GPCRs such as single peptides that simultaneously activate GIP and/or GCGR in addition to GLP1, oral tablet formulation of GLP-1, small molecules nonpeptidic oral GLP1R and fixed-dose combination as well as add-on therapy for patients already treated with a GLP-1 agonist.
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Affiliation(s)
- Alessandro Pocai
- Cardiovascular and Metabolic Disease, Johnson & Johnson Innovative Medicine Research & Development, Spring House, PA, United States
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