1
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Patel A, Rosenke K, Parzych EM, Feldmann F, Bharti S, Griffin AJ, Schouest B, Lewis M, Choi J, Chokkalingam N, Machado V, Smith BJ, Frase D, Ali AR, Lovaglio J, Nguyen B, Hanley PW, Walker SN, Gary EN, Kulkarni A, Generotti A, Francica JR, Rosenthal K, Kulp DW, Esser MT, Smith TRF, Shaia C, Weiner DB, Feldmann H. In vivo delivery of engineered synthetic DNA-encoded SARS-CoV-2 monoclonal antibodies for pre-exposure prophylaxis in non-human primates. Emerg Microbes Infect 2024; 13:2294860. [PMID: 38165394 PMCID: PMC10903752 DOI: 10.1080/22221751.2023.2294860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
COVID-19 remains a major public health concern. Monoclonal antibodies have received emergency use authorization (EUA) for pre-exposure prophylaxis against COVID-19 among high-risk groups for treatment of mild to moderate COVID-19. In addition to recombinant biologics, engineered synthetic DNA-encoded antibodies (DMAb) are an important strategy for direct in vivo delivery of protective mAb. A DMAb cocktail was synthetically engineered to encode the immunoglobulin heavy and light chains of two different two different Fc-engineered anti-SARS-CoV-2 antibodies. The DMAbs were designed to enhance in vivo expression and delivered intramuscularly to cynomolgus and rhesus macaques with a modified in vivo delivery regimen. Serum levels were detected in macaques, along with specific binding to SARS-CoV-2 spike receptor binding domain protein and neutralization of multiple SARS-CoV-2 variants of concern in pseudovirus and authentic live virus assays. Prophylactic administration was protective in rhesus macaques against signs of SARS-CoV-2 (USA-WA1/2020) associated disease in the lungs. Overall, the data support further study of DNA-encoded antibodies as an additional delivery mode for prevention of COVID-19 severe disease. These data have implications for human translation of gene-encoded mAbs for emerging infectious diseases and low dose mAb delivery against COVID-19.
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Affiliation(s)
- Ami Patel
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Kyle Rosenke
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Elizabeth M. Parzych
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Friederike Feldmann
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Suman Bharti
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Amanda J. Griffin
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | | | - Matt Lewis
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Jihae Choi
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Neethu Chokkalingam
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | | | - Brian J. Smith
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Drew Frase
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Ali R. Ali
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Jamie Lovaglio
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Brian Nguyen
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | - Patrick W. Hanley
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Susanne N. Walker
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Ebony N. Gary
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Abhijeet Kulkarni
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | | | - Joseph R. Francica
- Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Kim Rosenthal
- Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Daniel W. Kulp
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Mark T. Esser
- Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | | | - Carl Shaia
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - David B. Weiner
- Vaccine and Immunotherapy Center, The Wistar Institute of Anatomy and Biology, Philadelphia, PA, USA
| | - Heinz Feldmann
- Rocky Mountain Laboratories, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
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2
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van der Horst HJ, Mutis T. Enhancing Fc-mediated effector functions of monoclonal antibodies: The example of HexaBodies. Immunol Rev 2024. [PMID: 39275983 DOI: 10.1111/imr.13394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2024]
Abstract
Since the approval of the CD20-targeting monoclonal antibody (mAb) rituximab for the treatment of lymphoma in 1997, mAb therapy has significantly transformed cancer treatment. With over 90 FDA-approved mAbs for the treatment of various hematological and solid cancers, modern cancer treatment relies heavily on these therapies. The overwhelming success of mAbs as cancer therapeutics is attributed to their broad applicability, high safety profile, and precise targeting of cancer-associated surface antigens. Furthermore, mAbs can induce various anti-tumor cytotoxic effector mechanisms including antibody-dependent cellular cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP), and complement-dependent cytotoxicity (CDC), all of which are mediated via their fragment crystallizable (Fc) domain. Over the past decades, these effector mechanisms have been substantially improved through Fc domain engineering. In this review, we will outline the different approaches to enhance Fc effector functions via Fc engineering of mAbs, with a specific emphasis on the so-called "HexaBody" technology, which is designed to enhance the hexamerization of mAbs on the target cell surface, thereby inducing greater complement activation, CDC, and receptor clustering. The review will summarize the development, preclinical, and clinical testing of several HexaBodies designed for the treatment of B-cell malignancies, as well as the potential use of the HexaBody technology beyond Fc-mediated effector functions.
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Affiliation(s)
- Hilma J van der Horst
- Department of Hematology, Cancer Center Amsterdam, Amsterdam UMC, VU Medical Center, Amsterdam, The Netherlands
| | - Tuna Mutis
- Department of Hematology, Cancer Center Amsterdam, Amsterdam UMC, VU Medical Center, Amsterdam, The Netherlands
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3
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Erlandson S, Wang J, Jiang H, Osei-Owusu J, Rockman HA, Kruse AC. Engineering and Characterization of a Long-Half-Life Relaxin Receptor RXFP1 Agonist. Mol Pharm 2024; 21:4441-4449. [PMID: 39134056 PMCID: PMC11372834 DOI: 10.1021/acs.molpharmaceut.4c00368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 09/03/2024]
Abstract
Relaxin-2 is a peptide hormone with important roles in human cardiovascular and reproductive biology. Its ability to activate cellular responses such as vasodilation, angiogenesis, and anti-inflammatory and antifibrotic effects has led to significant interest in using relaxin-2 as a therapeutic for heart failure and several fibrotic conditions. However, recombinant relaxin-2 has a very short serum half-life, limiting its clinical applications. Here, we present protein engineering efforts targeting the relaxin-2 hormone in order to increase its serum half-life while maintaining its ability to activate the G protein-coupled receptor RXFP1. To achieve this, we optimized a fusion between relaxin-2 and an antibody Fc fragment, generating a version of the hormone with a circulating half-life of around 3 to 5 days in mice while retaining potent agonist activity at the RXFP1 receptor both in vitro and in vivo.
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Affiliation(s)
- Sarah
C. Erlandson
- Department
of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Jialu Wang
- Department
of Medicine, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Haoran Jiang
- Department
of Medicine, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - James Osei-Owusu
- Department
of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Howard A. Rockman
- Department
of Medicine, Duke University Medical Center, Durham, North Carolina 27710, United States
- Department
of Cell Biology, Duke University Medical
Center, Durham, North Carolina 27710, United States
| | - Andrew C. Kruse
- Department
of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115, United States
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4
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Yilmaz O, Torres T. Extended Half-life Antibodies: A Narrative Review of a New Approach in the Management of Atopic Dermatitis. Dermatol Ther (Heidelb) 2024; 14:2393-2406. [PMID: 39147994 PMCID: PMC11393227 DOI: 10.1007/s13555-024-01253-6] [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: 07/15/2024] [Accepted: 08/05/2024] [Indexed: 08/17/2024] Open
Abstract
Atopic dermatitis (AD) is a chronic, inflammatory skin disease characterized by intense pruritus and eczematous lesions, significantly impacting physical health and quality of life. The pathogenesis of AD involves genetic predisposition, immune dysregulation, and environmental factors, with a defective skin barrier playing a crucial role. Treatment options for AD include both topical and systemic therapies, with advanced treatments like Janus kinase inhibitors and biologics offering significant improvements but facing limitations in safety and dosing frequency. Extended half-life antibodies represent a promising advancement for the management of immune-mediated inflammatory diseases, including AD. These antibodies, engineered for prolonged circulation and reduced dosing frequency, target key cytokines and immune pathways known to be involved in the pathogenesis of AD, offering potential for less frequent administration while maintaining efficacy. Currently, two such agents are in phase 2 trials. APG777, targeting interleukin-13 (IL-13), and IMG-007, targeting OX40 receptor, have shown promising preclinical and early clinical results. They demonstrated prolonged half-lives and the potential for less frequent dosage regimen, along with significant improvements in AD symptoms. These therapies could enhance patient adherence and reduce healthcare burdens by decreasing injection frequencies and clinic visits. As research continues, extended half-life antibodies could significantly improve AD management and patient quality of life. Further studies will determine the long-term safety and efficacy of extended half-life antibodies, with ongoing innovations in antibody engineering likely to broaden their applications and benefits.
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Affiliation(s)
- Orhan Yilmaz
- College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Tiago Torres
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal.
- Department of Dermatology, Centro Hospitalar Universitário Do Porto, Largo Do Prof. Abel Salazar, S/N, 4099-001, Porto, Portugal.
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5
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Khaimraj A, Baehr CA, Hicks D, Raleigh MD, Pravetoni M. Monoclonal Antibodies Engineered with Fc Region Mutations to Extend Protection against Fentanyl Toxicity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 213:663-668. [PMID: 39018496 PMCID: PMC11333160 DOI: 10.4049/jimmunol.2400170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/19/2024] [Indexed: 07/19/2024]
Abstract
Fentanyl and other synthetic opioids are the leading cause of drug-related deaths in the United States. mAbs that selectively target fentanyl and fentanyl analogues offer a promising strategy for treating both opioid-related overdoses and opioid use disorders. To increase the duration of efficacy of a candidate mAb against fentanyl, we selected three sets of mutations in the Fc region of an IgG1 anti-fentanyl mAb (HY6-F9DF215, HY6-F9DHS, HY6-F9YTE) to increase binding to the neonatal Fc receptor (FcRn). The mAb mutants were compared against unmodified (wild-type [WT], HY6-F9WT) anti-fentanyl mAb for fentanyl binding, thermal stability, and FcRn affinity in vitro, and for efficacy against fentanyl and mAb half-life in vivo in mice. Biolayer interferometry showed a >10-fold increase in the affinity for recombinant FcRn of the three mutant mAbs compared with HY6-F9WT. During an acute fentanyl challenge in mice, all FcRn-mutated mAbs provided equal protection against fentanyl-induced effects, and all mAbs reduced brain fentanyl levels compared with the saline group. Serum persistence of the mutant mAbs was tested in Tg276 transgenic mice expressing human FcRn. After administration of 40 mg/kg HY6-F9WT, HY6-F9DF215, HY6-F9DHS, and HY6-F9YTE, the mAbs showed half-lives of 6.3, 26.4, 14.7, and 6.9 d, respectively. These data suggest that modification of mAbs against fentanyl to bind to FcRn with higher affinity can increase their half-life relative to WT mAbs while maintaining efficacy against the toxic effects of fentanyl, further supporting their potential role as a therapeutic treatment option for opioid use disorder and overdose.
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Affiliation(s)
- Aaron Khaimraj
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Carly A. Baehr
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Dustin Hicks
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Michael D. Raleigh
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Marco Pravetoni
- Department of Psychiatry and Behavioral Sciences, University of Washington, University of Washington Center for Medication Development for Substance Use Disorders, Garvey Institute for Brain Solutions, Seattle, WA
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6
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Dabkowska A, Domka K, Firczuk M. Advancements in cancer immunotherapies targeting CD20: from pioneering monoclonal antibodies to chimeric antigen receptor-modified T cells. Front Immunol 2024; 15:1363102. [PMID: 38638442 PMCID: PMC11024268 DOI: 10.3389/fimmu.2024.1363102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 03/25/2024] [Indexed: 04/20/2024] Open
Abstract
CD20 located predominantly on the B cells plays a crucial role in their development, differentiation, and activation, and serves as a key therapeutic target for the treatment of B-cell malignancies. The breakthrough of monoclonal antibodies directed against CD20, notably exemplified by rituximab, revolutionized the prognosis of B-cell malignancies. Rituximab, approved across various hematological malignancies, marked a paradigm shift in cancer treatment. In the current landscape, immunotherapies targeting CD20 continue to evolve rapidly. Beyond traditional mAbs, advancements include antibody-drug conjugates (ADCs), bispecific antibodies (BsAbs), and chimeric antigen receptor-modified (CAR) T cells. ADCs combine the precision of antibodies with the cytotoxic potential of drugs, presenting a promising avenue for enhanced therapeutic efficacy. BsAbs, particularly CD20xCD3 constructs, redirect cytotoxic T cells to eliminate cancer cells, thereby enhancing both precision and potency in their therapeutic action. CAR-T cells stand as a promising strategy for combatting hematological malignancies, representing one of the truly personalized therapeutic interventions. Many new therapies are currently being evaluated in clinical trials. This review serves as a comprehensive summary of CD20-targeted therapies, highlighting the progress and challenges that persist. Despite significant advancements, adverse events associated with these therapies and the development of resistance remain critical issues. Understanding and mitigating these challenges is paramount for the continued success of CD20-targeted immunotherapies.
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Affiliation(s)
- Agnieszka Dabkowska
- Laboratory of Immunology, Mossakowski Medical Research Institute Polish Academy of Sciences, Warsaw, Poland
- Department of Immunology, Medical University of Warsaw, Warsaw, Poland
| | - Krzysztof Domka
- Laboratory of Immunology, Mossakowski Medical Research Institute Polish Academy of Sciences, Warsaw, Poland
- Department of Immunology, Medical University of Warsaw, Warsaw, Poland
| | - Malgorzata Firczuk
- Laboratory of Immunology, Mossakowski Medical Research Institute Polish Academy of Sciences, Warsaw, Poland
- Department of Immunology, Medical University of Warsaw, Warsaw, Poland
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7
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Foss S, Sakya SA, Aguinagalde L, Lustig M, Shaughnessy J, Cruz AR, Scheepmaker L, Mathiesen L, Ruso-Julve F, Anthi AK, Gjølberg TT, Mester S, Bern M, Evers M, Bratlie DB, Michaelsen TE, Schlothauer T, Sok D, Bhattacharya J, Leusen J, Valerius T, Ram S, Rooijakkers SHM, Sandlie I, Andersen JT. Human IgG Fc-engineering for enhanced plasma half-life, mucosal distribution and killing of cancer cells and bacteria. Nat Commun 2024; 15:2007. [PMID: 38453922 PMCID: PMC10920689 DOI: 10.1038/s41467-024-46321-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 02/22/2024] [Indexed: 03/09/2024] Open
Abstract
Monoclonal IgG antibodies constitute the fastest growing class of therapeutics. Thus, there is an intense interest to design more potent antibody formats, where long plasma half-life is a commercially competitive differentiator affecting dosing, frequency of administration and thereby potentially patient compliance. Here, we report on an Fc-engineered variant with three amino acid substitutions Q311R/M428E/N434W (REW), that enhances plasma half-life and mucosal distribution, as well as allows for needle-free delivery across respiratory epithelial barriers in human FcRn transgenic mice. In addition, the Fc-engineered variant improves on-target complement-mediated killing of cancer cells as well as both gram-positive and gram-negative bacteria. Hence, this versatile Fc technology should be broadly applicable in antibody design aiming for long-acting prophylactic or therapeutic interventions.
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Affiliation(s)
- Stian Foss
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Siri A Sakya
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Leire Aguinagalde
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Marta Lustig
- Section for Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Jutamas Shaughnessy
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Ana Rita Cruz
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Lisette Scheepmaker
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Line Mathiesen
- Department of Public Health, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Fulgencio Ruso-Julve
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Aina Karen Anthi
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Torleif Tollefsrud Gjølberg
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Simone Mester
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Malin Bern
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway
| | - Mitchell Evers
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Diane B Bratlie
- Infection Immunology, Norwegian Institute of Public Health, Oslo, Norway
| | - Terje E Michaelsen
- Infection Immunology, Norwegian Institute of Public Health, Oslo, Norway
- Department of Chemical Pharmacy, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Tilman Schlothauer
- Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Munich, Germany
| | - Devin Sok
- International AIDS Vaccine Initiative (IAVI), New York, NY, USA
| | - Jayanta Bhattacharya
- Antibody Translational Research Program, Translational Health Science & Technology Institute, NCR Biotech Science Cluster, Faridabad, India
| | - Jeanette Leusen
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Thomas Valerius
- Section for Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Sanjay Ram
- Department of Medicine, Division of Infectious Diseases and Immunology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Suzan H M Rooijakkers
- Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Inger Sandlie
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Jan Terje Andersen
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
- Institute of Clinical Medicine, Department of Pharmacology, University of Oslo, Oslo, Norway.
- Precision Immunotherapy Alliance (PRIMA), University of Oslo, Oslo, Norway.
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8
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Wang Z, Huang AS, Tang L, Wang J, Wang G. Microfluidic-assisted single-cell RNA sequencing facilitates the development of neutralizing monoclonal antibodies against SARS-CoV-2. LAB ON A CHIP 2024; 24:642-657. [PMID: 38165771 DOI: 10.1039/d3lc00749a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
As a class of antibodies that specifically bind to a virus and block its entry, neutralizing monoclonal antibodies (neutralizing mAbs) have been recognized as a top choice for combating COVID-19 due to their high specificity and efficacy in treating serious infections. Although conventional approaches for neutralizing mAb development have been optimized for decades, there is an urgent need for workflows with higher efficiency due to time-sensitive concerns, including the high mutation rate of SARS-CoV-2. One promising approach is the identification of neutralizing mAb candidates via single-cell RNA sequencing (RNA-seq), as each B cell has a unique transcript sequence corresponding to its secreted antibody. The state-of-the-art high-throughput single-cell sequencing technologies, which have been greatly facilitated by advances in microfluidics, have greatly accelerated the process of neutralizing mAb development. Here, we provide an overview of the general procedures for high-throughput single-cell RNA-seq enabled by breakthroughs in droplet microfluidics, introduce revolutionary approaches that combine single-cell RNA-seq to facilitate the development of neutralizing mAbs against SARS-CoV-2, and outline future steps that need to be taken to further improve development strategies for effective treatments against infectious diseases.
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Affiliation(s)
- Ziwei Wang
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Amelia Siqi Huang
- Dalton Academy, The Affiliated High School of Peking University, Beijing, 100190, China
| | - Lingfang Tang
- Dalton Academy, The Affiliated High School of Peking University, Beijing, 100190, China
| | - Jianbin Wang
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Guanbo Wang
- Institute for Cell Analysis, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
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9
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Damelang T, Brinkhaus M, van Osch TLJ, Schuurman J, Labrijn AF, Rispens T, Vidarsson G. Impact of structural modifications of IgG antibodies on effector functions. Front Immunol 2024; 14:1304365. [PMID: 38259472 PMCID: PMC10800522 DOI: 10.3389/fimmu.2023.1304365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Immunoglobulin G (IgG) antibodies are a critical component of the adaptive immune system, binding to and neutralizing pathogens and other foreign substances. Recent advances in molecular antibody biology and structural protein engineering enabled the modification of IgG antibodies to enhance their therapeutic potential. This review summarizes recent progress in both natural and engineered structural modifications of IgG antibodies, including allotypic variation, glycosylation, Fc engineering, and Fc gamma receptor binding optimization. We discuss the functional consequences of these modifications to highlight their potential for therapeutical applications.
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Affiliation(s)
- Timon Damelang
- Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam, Netherlands
- Sanquin Research, Department of Immunopathology, Amsterdam, Netherlands
- Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
- Department of Antibody Research & Technologies’, Genmab, Utrecht, Netherlands
| | - Maximilian Brinkhaus
- Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam, Netherlands
- Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
| | - Thijs L. J. van Osch
- Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam, Netherlands
- Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
| | - Janine Schuurman
- Department of Antibody Research & Technologies’, Genmab, Utrecht, Netherlands
| | - Aran F. Labrijn
- Department of Antibody Research & Technologies’, Genmab, Utrecht, Netherlands
| | - Theo Rispens
- Sanquin Research, Department of Immunopathology, Amsterdam, Netherlands
| | - Gestur Vidarsson
- Sanquin Research, Department of Experimental Immunohematology and Landsteiner Laboratory, Amsterdam, Netherlands
- Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
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10
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Zikos J, Webb GM, Wu HL, Reed JS, Watanabe J, Usachenko JL, Shaqra AM, Schiffer CA, Van Rompay KKA, Sacha JB, Magnani DM. FcRn-enhancing mutations lead to increased and prolonged levels of the HIV CCR5-blocking monoclonal antibody leronlimab in the fetuses and newborns of pregnant rhesus macaques. MAbs 2024; 16:2406788. [PMID: 39324549 PMCID: PMC11441024 DOI: 10.1080/19420862.2024.2406788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 09/17/2024] [Accepted: 09/17/2024] [Indexed: 09/27/2024] Open
Abstract
Prenatal administration of monoclonal antibodies (mAbs) is a strategy that could be exploited to prevent viral infections during pregnancy and early life. To reach protective levels in fetuses, mAbs must be transported across the placenta, a selective barrier that actively and specifically promotes the transfer of antibodies (Abs) into the fetus through the neonatal Fc receptor (FcRn). Because FcRn also regulates Ab half-life, Fc mutations like the M428L/N434S, commonly known as LS mutations, and others have been developed to enhance binding affinity to FcRn and improve drug pharmacokinetics. We hypothesized that these FcRn-enhancing mutations could similarly affect the delivery of therapeutic Abs to the fetus. To test this hypothesis, we measured the transplacental transfer of leronlimab, an anti-CCR5 mAb, in clinical development for preventing HIV infections, using pregnant rhesus macaques to model in utero mAb transfer. We also generated a stabilized and FcRn-enhanced form of leronlimab, termed leronlimab-PLS. Leronlimab-PLS maintained higher levels within the maternal compartment while also reaching higher mAb levels in the fetus and newborn circulation. Further, a single dose of leronlimab-PLS led to complete CCR5 receptor occupancy in mothers and newborns for almost a month after birth. These findings support the optimization of FcRn interactions in mAb therapies designed for administration during pregnancy.
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MESH Headings
- Animals
- Pregnancy
- Receptors, Fc/genetics
- Receptors, Fc/immunology
- Receptors, Fc/metabolism
- Female
- Histocompatibility Antigens Class I/genetics
- Histocompatibility Antigens Class I/immunology
- Macaca mulatta
- Fetus/immunology
- Receptors, CCR5/genetics
- Receptors, CCR5/immunology
- Animals, Newborn
- Humans
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/genetics
- HIV Infections/immunology
- HIV Infections/drug therapy
- HIV Infections/genetics
- Maternal-Fetal Exchange/immunology
- Mutation
- HIV Antibodies/immunology
- HIV Antibodies/genetics
- CCR5 Receptor Antagonists/pharmacology
- Antibodies, Monoclonal, Humanized/immunology
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Affiliation(s)
- Joanna Zikos
- Nonhuman Primate Reagent Resource (NHPRR), Department of Medicine - Innate Immunity, UMass Chan Medical School, Worcester, MA, USA
| | - Gabriela M Webb
- Division of Pathobiology & Immunology, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Helen L Wu
- Division of Pathobiology & Immunology, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Jason S Reed
- Division of Pathobiology & Immunology, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Jennifer Watanabe
- California National Primate Research Center (CNPRC), University of California, Davis, CA, USA
| | - Jodie L Usachenko
- California National Primate Research Center (CNPRC), University of California, Davis, CA, USA
| | - Ala M Shaqra
- Department of Biochemistry and Molecular Biotechnology, UMass Chan Medical School, Worcester, MA, USA
| | - Celia A Schiffer
- Department of Biochemistry and Molecular Biotechnology, UMass Chan Medical School, Worcester, MA, USA
| | - Koen K A Van Rompay
- California National Primate Research Center (CNPRC), University of California, Davis, CA, USA
- Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA
| | - Jonah B Sacha
- Division of Pathobiology & Immunology, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Diogo M Magnani
- Nonhuman Primate Reagent Resource (NHPRR), Department of Medicine - Innate Immunity, UMass Chan Medical School, Worcester, MA, USA
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11
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Bedian V, Biris N, Omer C, Chung JK, Fuller J, Dagher R, Chandran S, Harwin P, Kiselak T, Violin J, Nichols A, Bista P. STAR-0215 is a Novel, Long-Acting Monoclonal Antibody Inhibitor of Plasma Kallikrein for the Potential Treatment of Hereditary Angioedema. J Pharmacol Exp Ther 2023; 387:214-225. [PMID: 37643795 DOI: 10.1124/jpet.123.001740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/31/2023] Open
Abstract
Hereditary angioedema (HAE) is a rare autosomal dominant disorder caused by a deficiency in functional C1 esterase inhibitor, a serpin family protein that blocks the activity of plasma kallikrein. Insufficient inhibition of plasma kallikrein results in the overproduction of bradykinin, a vasoactive inflammatory mediator that produces both pain and unpredictable swelling during HAE attacks, with potentially life-threatening consequences. We describe the generation of STAR-0215, a humanized IgG1 antibody with a long circulating half-life (t1/2) that potently inhibits plasma kallikrein activity, with a >1000-fold lower affinity for prekallikrein and no measurable inhibitory activity against other serine proteases. The high specificity and inhibitory effect of STAR-0215 is demonstrated through a unique allosteric mechanism involving N-terminal catalytic domain binding, destabilization of the activation domain, and reversion of the active site to the inactive zymogen state. The YTE (M252Y/S254T/T256E) modified fragment crystallizable (Fc) domain of STAR-0215 enhances pH-dependent neonatal Fc receptor binding, resulting in a prolonged t1/2 in vivo (∼34 days in cynomolgus monkeys) compared with antibodies without this modification. A single subcutaneous dose of STAR-0215 (≥100 mg) was predicted to be active in patients for 3 months or longer, based on simulations using a minimal physiologically based pharmacokinetic model. These data indicate that STAR-0215, a highly potent and specific antibody against plasma kallikrein with extended t1/2, is a potential agent for long-term preventative HAE therapy administered every 3 months or less frequently. SIGNIFICANCE STATEMENT: STAR-0215 is a YTE-modified immunoglobulin G1 monoclonal antibody with a novel binding mechanism that specifically and potently inhibits the enzymatic activity of plasma kallikrein and prevents the generation of bradykinin. It has been designed to be a long-lasting prophylactic treatment to prevent attacks of HAE and to decrease the burden of disease and the burden of treatment for people with HAE.
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Affiliation(s)
- Vahe Bedian
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Nikolaos Biris
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Charles Omer
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Jou-Ku Chung
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - James Fuller
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Rafif Dagher
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Sachin Chandran
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Peter Harwin
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Tomas Kiselak
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Jonathan Violin
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Andrew Nichols
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
| | - Pradeep Bista
- Quellis Biosciences, Waltham, Massachusetts (V.B., C.O., P.H., T.K., J.V.); Astria Therapeutics, Inc., Boston, Massachusetts (N.B., C.O., J.K.C., R.D., S.C., J.V., A.N., P.B.); and Helix Biostructures, Indianapolis, Indiana (J.F.)
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12
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McNee A, Vanover D, Rijal P, Paudyal B, Lean FZX, MacLoughlin R, Núñez A, Townsend A, Santangelo PJ, Tchilian E. A direct contact pig influenza challenge model for assessing protective efficacy of monoclonal antibodies. Front Immunol 2023; 14:1229051. [PMID: 37965320 PMCID: PMC10641767 DOI: 10.3389/fimmu.2023.1229051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/11/2023] [Indexed: 11/16/2023] Open
Abstract
Monoclonal antibodies (mAbs) can be used to complement immunization for the therapy of influenza virus infection. We have established the pig, a natural large animal host for influenza A, with many physiological, immunological, and anatomical similarities to humans, as an appropriate model for testing mAbs. We have evaluated the protective efficacy of the strongly neutralizing human anti-hemagglutinin mAb, 2-12C in the pig influenza model. Intravenous administration of recombinant 2-12C reduced virus load and lung pathology, however, it did not prevent virus nasal shedding and, consequently, transmission. This may be because the pigs were directly infected intranasally with a high dose of the H1N1pdm09 virus. To address this, we developed a contact challenge model in which the animals were given 2-12C and one day later co-housed with donor pigs previously infected intra-nasally with H1N1pdm09. 2-12C pre-treatment completely prevented infection. We also administered a lower dose of 2-12C by aerosol to the respiratory tract, but this did not prevent shedding in the direct challenge model, although it abolished lung infection. We propose that the direct contact challenge model of pig influenza may be useful for evaluating candidate mAbs and emerging delivery platforms prior to clinical trials.
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Affiliation(s)
- Adam McNee
- Host Responses, The Pirbright Institute, Pirbright, United Kingdom
| | - Daryll Vanover
- Wallace H. Coulter Department of Biomedical Engineering, Emory University, Atlanta, GA, United States
| | - Pramila Rijal
- Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Basudev Paudyal
- Host Responses, The Pirbright Institute, Pirbright, United Kingdom
| | - Fabian Z. X. Lean
- Department of Pathology, Animal and Plant Health Agency (APHA)-Weybridge, Addlestone, United Kingdom
| | - Ronan MacLoughlin
- Research and Development, Science and Emerging Technologies, Aerogen Ltd, Galway, Ireland
| | - Alejandro Núñez
- Department of Pathology, Animal and Plant Health Agency (APHA)-Weybridge, Addlestone, United Kingdom
| | - Alain Townsend
- Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Philip J. Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Emory University, Atlanta, GA, United States
| | - Elma Tchilian
- Host Responses, The Pirbright Institute, Pirbright, United Kingdom
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13
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Rahimpour A, Mosallaei M, Pourghazi F, Tabatabaee SH, Hoseinpoor R, Pourmaleki E, Soosanabadi M. Development of an Expression Vector Engineering Strategy Based on tDNA Insulator Element for the Stable Expression of Vascular Endothelial Growth Factor Receptor-Fc Fusion Protein. Monoclon Antib Immunodiagn Immunother 2023; 42:140-144. [PMID: 37624609 DOI: 10.1089/mab.2023.0006] [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] [Indexed: 08/26/2023] Open
Abstract
During the past decades, tremendous advances have occurred in manufacturing recombinant therapeutic proteins in Chinese hamster ovary (CHO) cells. Nevertheless, the production of stable high-producing cell lines has remained a major obstacle in the development process of the CHO cell line. It has been shown that genomic regulatory elements can promote cell line development efficiency by improving transgenes' productivity and stability. Such elements include insulators, ubiquitous chromatin opening elements, scaffold/matrix attachment regions, and antirepressors. In addition, tDNA elements are shown to act as insulators in mammalian cells. This study examines the effect of the tDNA insulator on stable expression of a vascular endothelial growth factor receptor-Fc fusion protein.
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Affiliation(s)
- Azam Rahimpour
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Meysam Mosallaei
- Personalized Medicine and Genometabolomics Research Center, Hope Generation Foundation, Tehran, Iran
| | - Farzad Pourghazi
- Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sayed Hassan Tabatabaee
- Department of Life Science Engineering, Faculty of New Sciences and Technology, University of Tehran, Tehran, Iran
| | - Reyhaneh Hoseinpoor
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Es'hagh Pourmaleki
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Soosanabadi
- Department of Medical Genetics, Semnan University of Medical Sciences, Semnan, Iran
- Department of Genetics, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
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14
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Pyzik M, Kozicky LK, Gandhi AK, Blumberg RS. The therapeutic age of the neonatal Fc receptor. Nat Rev Immunol 2023; 23:415-432. [PMID: 36726033 PMCID: PMC9891766 DOI: 10.1038/s41577-022-00821-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2022] [Indexed: 02/03/2023]
Abstract
IgGs are essential soluble components of the adaptive immune response that evolved to protect the body from infection. Compared with other immunoglobulins, the role of IgGs is distinguished and enhanced by their high circulating levels, long half-life and ability to transfer from mother to offspring, properties that are conferred by interactions with neonatal Fc receptor (FcRn). FcRn binds to the Fc portion of IgGs in a pH-dependent manner and protects them from intracellular degradation. It also allows their transport across polarized cells that separate tissue compartments, such as the endothelium and epithelium. Further, it is becoming apparent that FcRn functions to potentiate cellular immune responses when IgGs, bound to their antigens, form IgG immune complexes. Besides the protective role of IgG, IgG autoantibodies are associated with numerous pathological conditions. As such, FcRn blockade is a novel and effective strategy to reduce circulating levels of pathogenic IgG autoantibodies and curtail IgG-mediated diseases, with several FcRn-blocking strategies on the path to therapeutic use. Here, we describe the current state of knowledge of FcRn-IgG immunobiology, with an emphasis on the functional and pathological aspects, and an overview of FcRn-targeted therapy development.
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Affiliation(s)
- Michal Pyzik
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Lisa K Kozicky
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Amit K Gandhi
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard S Blumberg
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Harvard Digestive Diseases Center, Boston, MA, USA.
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15
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Kana BD, Arbuthnot P, Botwe BK, Choonara YE, Hassan F, Louzir H, Matsoso P, Moore PL, Muhairwe A, Naidoo K, Ndomondo-Sigonda M, Madhi SA. Opportunities and challenges of leveraging COVID-19 vaccine innovation and technologies for developing sustainable vaccine manufacturing capabilities in Africa. THE LANCET. INFECTIOUS DISEASES 2023:S1473-3099(22)00878-7. [PMID: 37290473 DOI: 10.1016/s1473-3099(22)00878-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 06/10/2023]
Abstract
The COVID-19 pandemic heralded unprecedented resource mobilisation and global scientific collaboration to rapidly develop effective vaccines. Regrettably, vaccine distribution has been inequitable, particularly in Africa where manufacturing capacity remains nominal. To address this, several initiatives are underway to develop and manufacture COVID-19 vaccines in Africa. Nevertheless, diminishing demand for COVID-19 vaccines, the cost competitiveness of producing goods locally, intellectual property rights issues, and complex regulatory environments among other challenges can undermine these ventures. We outline how extending COVID-19 vaccine manufacturing in Africa to include diverse products, multiple vaccine platforms, and advanced delivery systems will ensure sustainability. Possible models, including leveraging public-academic-private partnerships to enhance success of vaccine manufacturing capacity in Africa are also discussed. Intensifying research in vaccine discovery on the continent could yield vaccines that further bolster sustainability of local production, ensuring greater pandemic preparedness in resource-constrained environments, and long-term health systems security.
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Affiliation(s)
- Bavesh D Kana
- Department of Science and Innovation/National Research Foundation Centre of Excellence for Biomedical Tuberculosis Research, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Patrick Arbuthnot
- South African Medical Research Council Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; African Network for Drugs and Diagnostics Innovation Centre of Excellence in Advanced Drug Delivery, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Fatima Hassan
- Health Justice Initiative, University of Cape Town School of Public Health and Family Medicine, Cape Town, South Africa
| | - Hechmi Louzir
- Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Institut Pasteur de Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Precious Matsoso
- Health Regulatory Science Platform, Wits Health Consortium, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Penny L Moore
- South African Medical Research Council Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; National Institute for Communicable Diseases, Johannesburg, South Africa
| | | | - Kubendran Naidoo
- South African Medical Research Council Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; National Health Laboratory Service, Johannesburg, South Africa
| | - Margareth Ndomondo-Sigonda
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; African Union Development Agency-New Partnership for Africa's Development, Midrand, South Africa
| | - Shabir A Madhi
- South African Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; African Leadership in Vaccinology Expertise, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
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16
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Struble EB, Rawson JMO, Stantchev T, Scott D, Shapiro MA. Uses and Challenges of Antiviral Polyclonal and Monoclonal Antibody Therapies. Pharmaceutics 2023; 15:pharmaceutics15051538. [PMID: 37242780 DOI: 10.3390/pharmaceutics15051538] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/04/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Viral diseases represent a major public health concerns and ever-present risks for developing into future pandemics. Antiviral antibody therapeutics, either alone or in combination with other therapies, emerged as valuable preventative and treatment options, including during global emergencies. Here we will discuss polyclonal and monoclonal antiviral antibody therapies, focusing on the unique biochemical and physiological properties that make them well-suited as therapeutic agents. We will describe the methods of antibody characterization and potency assessment throughout development, highlighting similarities and differences between polyclonal and monoclonal products as appropriate. In addition, we will consider the benefits and challenges of antiviral antibodies when used in combination with other antibodies or other types of antiviral therapeutics. Lastly, we will discuss novel approaches to the characterization and development of antiviral antibodies and identify areas that would benefit from additional research.
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Affiliation(s)
- Evi B Struble
- Division of Plasma Derivatives, Office of Plasma Protein Therapeutics CMC, Office of Therapeutic Products, Center for Biologics Evaluation and Research, United States Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Jonathan M O Rawson
- Division of Antivirals, Office of Infectious Diseases, Office of New Drugs, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Tzanko Stantchev
- Division of Biotechnology Review and Research 1, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Dorothy Scott
- Division of Plasma Derivatives, Office of Plasma Protein Therapeutics CMC, Office of Therapeutic Products, Center for Biologics Evaluation and Research, United States Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Marjorie A Shapiro
- Division of Biotechnology Review and Research 1, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, MD 20993, USA
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17
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Qian L, Lin X, Gao X, Khan RU, Liao JY, Du S, Ge J, Zeng S, Yao SQ. The Dawn of a New Era: Targeting the "Undruggables" with Antibody-Based Therapeutics. Chem Rev 2023. [PMID: 37186942 DOI: 10.1021/acs.chemrev.2c00915] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The high selectivity and affinity of antibodies toward their antigens have made them a highly valuable tool in disease therapy, diagnosis, and basic research. A plethora of chemical and genetic approaches have been devised to make antibodies accessible to more "undruggable" targets and equipped with new functions of illustrating or regulating biological processes more precisely. In this Review, in addition to introducing how naked antibodies and various antibody conjugates (such as antibody-drug conjugates, antibody-oligonucleotide conjugates, antibody-enzyme conjugates, etc.) work in therapeutic applications, special attention has been paid to how chemistry tools have helped to optimize the therapeutic outcome (i.e., with enhanced efficacy and reduced side effects) or facilitate the multifunctionalization of antibodies, with a focus on emerging fields such as targeted protein degradation, real-time live-cell imaging, catalytic labeling or decaging with spatiotemporal control as well as the engagement of antibodies inside cells. With advances in modern chemistry and biotechnology, well-designed antibodies and their derivatives via size miniaturization or multifunctionalization together with efficient delivery systems have emerged, which have gradually improved our understanding of important biological processes and paved the way to pursue novel targets for potential treatments of various diseases.
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Affiliation(s)
- Linghui Qian
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xuefen Lin
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xue Gao
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Rizwan Ullah Khan
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jia-Yu Liao
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Shubo Du
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Jingyan Ge
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Su Zeng
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Cancer Center, & Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
| | - Shao Q Yao
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore, 117544
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18
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Rosenberg YJ, Ordonez T, Khanwalkar US, Barnette P, Pandey S, Backes IM, Otero CE, Goldberg BS, Crowley AR, Leib DA, Shapiro MB, Jiang X, Urban LA, Lees J, Hessell AJ, Permar S, Haigwood NL, Ackerman ME. Evidence for the Role of a Second Fc-Binding Receptor in Placental IgG Transfer in Nonhuman Primates. mBio 2023; 14:e0034123. [PMID: 36946726 PMCID: PMC10127586 DOI: 10.1128/mbio.00341-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/21/2023] [Indexed: 03/23/2023] Open
Abstract
Transplacental transfer of maternal antibodies provides the fetus and newborn with passive protection against infectious diseases. While the role of the highly conserved neonatal Fc receptor (FcRn) in transfer of IgG in mammals is undisputed, recent reports have suggested that a second receptor may contribute to transport in humans. We report poor transfer efficiency of plant-expressed recombinant HIV-specific antibodies, including engineered variants with high FcRn affinity, following subcutaneous infusion into rhesus macaques close to parturition. Unexpectedly, unlike those derived from mammalian tissue culture, plant-derived antibodies were essentially unable to cross macaque placentas. This defect was associated with poor Fcγ receptor binding and altered Fc glycans and was not recapitulated in mice. These results suggest that maternal-fetal transfer of IgG across the three-layer primate placenta may require a second receptor and suggest a means of providing maternal antibody treatments during pregnancy while avoiding fetal harm. IMPORTANCE This study compared the ability of several human HIV envelope-directed monoclonal antibodies produced in plants with the same antibodies produced in mammalian cells for their ability to cross monkey and mouse placentas. We found that the two types of antibodies have comparable transfer efficiencies in mice, but they are differentially transferred across macaque placentas, consistent with a two-receptor IgG transport model in primates. Importantly, plant-produced monoclonal antibodies have excellent binding characteristics for human FcRn receptors, permitting desirable pharmacokinetics in humans. The lack of efficient transfer across the primate placenta suggests that therapeutic plant-based antibody treatments against autoimmune diseases and cancer could be provided to the mother while avoiding transfer and preventing harm to the fetus.
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Affiliation(s)
| | - Tracy Ordonez
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | | | - Philip Barnette
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | - Shilpi Pandey
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | - Iara M. Backes
- Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
| | - Claire E. Otero
- Department of Pediatrics, Weill Cornell Medicine, New York, New York, USA
| | | | - Andrew R. Crowley
- Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
| | - David A. Leib
- Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
| | - Mariya B. Shapiro
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | | | | | | | - Ann J. Hessell
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | - Sallie Permar
- Department of Pediatrics, Weill Cornell Medicine, New York, New York, USA
| | - Nancy L. Haigwood
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | - Margaret E. Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA
- Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
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19
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Kasse CM, Yu AC, Powell AE, Roth GA, Liong CS, Jons CK, Buahin A, Maikawa CL, Zhou X, Youssef S, Glanville JE, Appel EA. Subcutaneous delivery of an antibody against SARS-CoV-2 from a supramolecular hydrogel depot. Biomater Sci 2023; 11:2065-2079. [PMID: 36723072 PMCID: PMC10012178 DOI: 10.1039/d2bm00819j] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/21/2022] [Indexed: 01/31/2023]
Abstract
Prolonged maintenance of therapeutically-relevant levels of broadly neutralizing antibodies (bnAbs) is necessary to enable passive immunization against infectious disease. Unfortunately, protection only lasts for as long as these bnAbs remain present at a sufficiently high concentration in the body. Poor pharmacokinetics and burdensome administration are two challenges that need to be addressed in order to make pre- and post-exposure prophylaxis with bnAbs feasible and effective. In this work, we develop a supramolecular hydrogel as an injectable, subcutaneous depot to encapsulate and deliver antibody drug cargo. This polymer-nanoparticle (PNP) hydrogel exhibits shear-thinning and self-healing properties that are required for an injectable drug delivery vehicle. In vitro drug release assays and diffusion measurements indicate that the PNP hydrogels prevent burst release and slow the release of encapsulated antibodies. Delivery of bnAbs against SARS-CoV-2 from PNP hydrogels is compared to standard routes of administration in a preclinical mouse model. We develop a multi-compartment model to understand the ability of these subcutaneous depot materials to modulate the pharmacokinetics of released antibodies; the model is extrapolated to explore the requirements needed for novel materials to successfully deliver relevant antibody therapeutics with different pharmacokinetic characteristics.
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Affiliation(s)
- Catherine M Kasse
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Anthony C Yu
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Abigail E Powell
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305, USA
- Stanford ChEM-H, Stanford University, Stanford, CA 94305, USA
| | - Gillie A Roth
- Department of Bioengineering, Stanford University, Stanford, CA, 94305 USA
| | - Celine S Liong
- Department of Bioengineering, Stanford University, Stanford, CA, 94305 USA
| | - Carolyn K Jons
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Awua Buahin
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Caitlin L Maikawa
- Department of Bioengineering, Stanford University, Stanford, CA, 94305 USA
| | - Xueting Zhou
- Department of Bioengineering, Stanford University, Stanford, CA, 94305 USA
| | - Sawsan Youssef
- Centivax Inc., 329 Oyster Point Drive, 3rd Floor South San Francisco, CA 94080, USA
| | - Jacob E Glanville
- Centivax Inc., 329 Oyster Point Drive, 3rd Floor South San Francisco, CA 94080, USA
| | - Eric A Appel
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
- Stanford ChEM-H, Stanford University, Stanford, CA 94305, USA
- Department of Bioengineering, Stanford University, Stanford, CA, 94305 USA
- Institute for Immunity, Transplantation, & Infection, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Pediatrics - Endocrinology, Stanford University School of Medicine, Stanford, CA 94305, USA
- Stanford Woods Institute for the Environment, Stanford University, Stanford, CA 94305, USA
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20
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Aweda TA, Cheng SH, Lenhard SC, Sepp A, Skedzielewski T, Hsu CY, Marshall S, Haag H, Kehler J, Jagdale P, Peter A, Schmid MA, Gehman A, Doan M, Mayer AP, Gorycki P, Fanget M, Colas C, Smith B, Maier CC, Alsaid H. In vivo biodistribution and pharmacokinetics of sotrovimab, a SARS-CoV-2 monoclonal antibody, in healthy cynomolgus monkeys. Eur J Nucl Med Mol Imaging 2023; 50:667-678. [PMID: 36305907 PMCID: PMC9614201 DOI: 10.1007/s00259-022-06012-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/16/2022] [Indexed: 01/24/2023]
Abstract
PURPOSE Sotrovimab (VIR-7831), a human IgG1κ monoclonal antibody (mAb), binds to a conserved epitope on the SARS-CoV-2 spike protein receptor binding domain (RBD). The Fc region of VIR-7831 contains an LS modification to promote neonatal Fc receptor (FcRn)-mediated recycling and extend its serum half-life. Here, we aimed to evaluate the impact of the LS modification on tissue biodistribution, by comparing VIR-7831 to its non-LS-modified equivalent, VIR-7831-WT, in cynomolgus monkeys. METHODS 89Zr-based PET/CT imaging of VIR-7831 and VIR-7831-WT was performed up to 14 days post injection. All major organs were analyzed for absolute concentration as well as tissue:blood ratios, with the focus on the respiratory tract, and a physiologically based pharmacokinetics (PBPK) model was used to evaluate the tissue biodistribution kinetics. Radiomics features were also extracted from the PET images and SUV values. RESULTS SUVmean uptake in the pulmonary bronchi for 89Zr-VIR-7831 was statistically higher than for 89Zr-VIR-7831-WT at days 6 (3.43 ± 0.55 and 2.59 ± 0.38, respectively) and 10 (2.66 ± 0.32 and 2.15 ± 0.18, respectively), while the reverse was observed in the liver at days 6 (5.14 ± 0.80 and 8.63 ± 0.89, respectively), 10 (4.52 ± 0.59 and 7.73 ± 0.66, respectively), and 14 (4.95 ± 0.65 and 7.94 ± 0.54, respectively). Though the calculated terminal half-life was 21.3 ± 3.0 days for VIR-7831 and 16.5 ± 1.1 days for VIR-7831-WT, no consistent differences were observed in the tissue:blood ratios between the antibodies except in the liver. While the lung:blood SUVmean uptake ratio for both mAbs was 0.25 on day 3, the PBPK model predicted the total lung tissue and the interstitial space to serum ratio to be 0.31 and 0.55, respectively. Radiomics analysis showed VIR-7831 had mean-centralized PET SUV distribution in the lung and liver, indicating more uniform uptake than VIR-7831-WT. CONCLUSION The half-life extended VIR-7831 remained in circulation longer than VIR-7831-WT, consistent with enhanced FcRn binding, while the tissue:blood concentration ratios in most tissues for both drugs remained statistically indistinguishable throughout the course of the experiment. In the bronchiolar region, a higher concentration of 89Zr-VIR-7831 was detected. The data also allow unparalleled insight into tissue distribution and elimination kinetics of mAbs that can guide future biologic drug discovery efforts, while the residualizing nature of the 89Zr label sheds light on the sites of antibody catabolism.
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Affiliation(s)
- Tolulope A Aweda
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Shih-Hsun Cheng
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Stephen C Lenhard
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | | | | | - Chih-Yang Hsu
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Shelly Marshall
- Integrated Biological Platform Sciences, GSK, Collegeville, PA, USA
| | - Heather Haag
- Integrated Biological Platform Sciences, GSK, Collegeville, PA, USA
| | - Jonathan Kehler
- Bioanalysis, Immunogenicity & Biomarkers, GSK, Collegeville, PA, USA
| | | | - Alessia Peter
- mAb Engineering & Bioanalytics, Humabs BioMed SA, Vir Biotechnology, Inc, Bellinzona, Switzerland
| | - Michael A Schmid
- mAb Engineering & Bioanalytics, Humabs BioMed SA, Vir Biotechnology, Inc, Bellinzona, Switzerland
| | - Andrew Gehman
- Non-Clinical and Translational Statistics, GSK, Collegeville, PA, USA
| | - Minh Doan
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA
| | - Andrew P Mayer
- Bioanalysis, Immunogenicity & Biomarkers, GSK, Collegeville, PA, USA
| | | | - Marie Fanget
- Bioanalytical Department, Vir Biotechnology, Inc, San Francisco, CA, USA
| | | | - Brenda Smith
- Toxicology, Vir Biotechnology, Inc, San Francisco, CA, USA
| | | | - Hasan Alsaid
- Bioimaging, GSK, 1250 S. Collegeville Rd, Collegeville, PA, 19426, USA.
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21
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An Fc variant with two mutations confers prolonged serum half-life and enhanced effector functions on IgG antibodies. Exp Mol Med 2022; 54:1850-1861. [PMID: 36319752 PMCID: PMC9628495 DOI: 10.1038/s12276-022-00870-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/07/2022] Open
Abstract
The pH-selective interaction between the immunoglobulin G (IgG) fragment crystallizable region (Fc region) and the neonatal Fc receptor (FcRn) is critical for prolonging the circulating half-lives of IgG molecules through intracellular trafficking and recycling. By using directed evolution, we successfully identified Fc mutations that improve the pH-dependent binding of human FcRn and prolong the serum persistence of a model IgG antibody and an Fc-fusion protein. Strikingly, trastuzumab-PFc29 and aflibercept-PFc29, a model therapeutic IgG antibody and an Fc-fusion protein, respectively, when combined with our engineered Fc (Q311R/M428L), both exhibited significantly higher serum half-lives in human FcRn transgenic mice than their counterparts with wild-type Fc. Moreover, in a cynomolgus monkey model, trastuzumab-PFc29 displayed a superior pharmacokinetic profile to that of both trastuzumab-YTE and trastuzumab-LS, which contain the well-validated serum half-life extension Fcs YTE (M252Y/S254T/T256E) and LS (M428L/N434S), respectively. Furthermore, the introduction of two identified mutations of PFc29 (Q311R/M428L) into the model antibodies enhanced both complement-dependent cytotoxicity and antibody-dependent cell-mediated cytotoxicity activity, which are triggered by the association between IgG Fc and Fc binding ligands and are critical for clearing cancer cells. In addition, the effector functions could be turned off by combining the two mutations of PFc29 with effector function-silencing mutations, but the antibodies maintained their excellent pH-dependent human FcRn binding profile. We expect our Fc variants to be an excellent tool for enhancing the pharmacokinetic profiles and potencies of various therapeutic antibodies and Fc-fusion proteins.
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22
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B-Cell-Based Immunotherapy: A Promising New Alternative. Vaccines (Basel) 2022; 10:vaccines10060879. [PMID: 35746487 PMCID: PMC9227543 DOI: 10.3390/vaccines10060879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 12/04/2022] Open
Abstract
The field of immunotherapy has undergone radical conceptual changes over the last decade. There are various examples of immunotherapy, including the use of monoclonal antibodies, cancer vaccines, tumor-infecting viruses, cytokines, adjuvants, and autologous T cells carrying chimeric antigen receptors (CARs) that can bind cancer-specific antigens known as adoptive immunotherapy. While a lot has been achieved in the field of T-cell immunotherapy, only a fraction of patients (20%) see lasting benefits from this mode of treatment, which is why there is a critical need to turn our attention to other immune cells. B cells have been shown to play both anti- and pro-tumorigenic roles in tumor tissue. In this review, we shed light on the dual nature of B cells in the tumor microenvironment. Furthermore, we discussed the different factors affecting the biology and function of B cells in tumors. In the third section, we described B-cell-based immunotherapies and their clinical applications and challenges. These current studies provide a springboard for carrying out future mechanistic studies to help us unleash the full potential of B cells in immunotherapy.
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23
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Kasse CM, Yu AC, Powell AE, Roth GA, Liong CS, Jons CK, Buahin A, Maikawa CL, Youssef S, Glanville JE, Appel EA. Subcutaneous delivery of an antibody against SARS-CoV-2 from a supramolecular hydrogel depot. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.05.24.493347. [PMID: 35665002 PMCID: PMC9164446 DOI: 10.1101/2022.05.24.493347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Prolonged maintenance of therapeutically-relevant levels of broadly neutralizing antibodies (bnAbs) is necessary to enable passive immunization against infectious disease. Unfortunately, protection only lasts for as long as these bnAbs remain present at a sufficiently high concentration in the body. Poor pharmacokinetics and burdensome administration are two challenges that need to be addressed in order to make pre- and post-exposure prophylaxis with bnAbs feasible and effective. In this work, we develop a supramolecular hydrogel as an injectable, subcutaneous depot to encapsulate and deliver antibody drug cargo. This polymer-nanoparticle (PNP) hydrogel exhibits shear-thinning and self-healing properties that are required for an injectable drug delivery vehicle. In vitro drug release assays and diffusion measurements indicate that the PNP hydrogels prevent burst release and slow the release of encapsulated antibodies. Delivery of bnAbs against SARS-CoV-2 from PNP hydrogels is compared to standard routes of administration in a preclinical mouse model. We develop a multi-compartment model to understand the ability of these subcutaneous depot materials to modulate the pharmacokinetics of released antibodies; the model is extrapolated to explore the requirements needed for novel materials to successfully deliver relevant antibody therapeutics with different pharmacokinetic characteristics.
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24
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Cheng Y, Shi D, Xu Z, Gao Z, Si Z, Zhao Y, Ye R, Fu Z, Fu W, Yang T, Xiu Y, Lin Q, Cheng D. 124I-Labeled Monoclonal Antibody and Fragment for the Noninvasive Evaluation of Tumor PD-L1 Expression In Vivo. Mol Pharm 2022; 19:3551-3562. [PMID: 35244407 DOI: 10.1021/acs.molpharmaceut.2c00084] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lung cancer is a highly heterogeneous cancer and is divided broadly into small and nonsmall cell lung cancer (SCLC or NSCLC). In all NSCLC patients, it is estimated that 50%-60% are programmed cell death ligand 1 (PD-L1) positive, and anti-PD-1/PD-L1 therapies have shown their clinical application prospects in advanced NSCLC. To avoid unnecessary adverse effects and provide anti-PD-1/PD-L1 therapy to the most appropriate patient population, the PD-L1 expression in patients preparing for treatment must be evaluated accurately and in real time. In this study, we noninvasively evaluate the PD-L1 expression in an NSCLC xenograft using 124I-labeled F(ab')2 fragments of durvalumab (Durva) and compared it with the 124I-labeled intact antibody in terms of the biodistribution and dosimetry. The aim is to develop a nuclide labeled molecular probe with better performance for PD-L1 immunoPET imaging. After cleaving using IdeS protease, the F(ab')2 fragments of Durva were labeled with 124I. The radioligand showed a high radiochemical purity (>96%) and outstanding stability. Western blot, quantitative real-time polymerase chain reaction, and flow cytometry were performed on the two selected NSCLC cell lines to measure the in vitro PD-L1 expression. The H460 cells showed a much higher PD-L1 expression than the A549 cells, both at the protein level and the mRNA level. In the following cell binding experiment and binding specificity assay, the labeled radioligand showed good affinity to high PD-L1 expression cells and could be blocked with excess unlabeled intact Durva. The results of the biodistribution and the positron emission tomography (PET) image showed that the peak tumor uptake of 124I-Durva-F(ab')2 was close to 124I-Durva, but much earlier (5.29 ± 0.42% ID/g for 124I-Durva-F(ab')2 at 12 h vs 5.18 ± 0.73% ID/g for 124I-Durva at 48 h). Compared with 124I-Durva, an accelerated blood clearance was observed for 124I-Durva-F(ab')2. The faster blood clearance allowed for a higher tumor-to-background ratio, which was reflected on the image in contrast. The H460 tumors showed excellent contrast as early as 4 h after injection with 124I-Durva-F(ab')2, and for 124I-Durva, the xenograft could not be distinguished clearly until 24 h after injection. Interestingly, 124I-Durva-F(ab')2 showed lower accumulations compared to other metal isotopes labeled PD-L1 antibodies in bone, liver, spleen etc., which will be beneficial for metastasis detection. Another benefit of accelerated blood clearance was a reduction in the radiation dose. According to the results of the OLINDA/EXM, the effective dose for the total body of 124I-Durva was 4.25-times greater than that of 124I-Durva-F(ab')2 (186 μSv/MBq vs 43.8 μSv/MBq). All of these data indicated that 124I-Durva-F(ab')2 is a promising immunoPET tracer for evaluating the in vivo PD-L1 levels in an NSCLC model and is expected to be successful in future clinical application.
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Affiliation(s)
- Yuan Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Dai Shi
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Zhan Xu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Zhihui Gao
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Zhan Si
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Yanzhao Zhao
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Renjie Ye
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Zhequan Fu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Wenhui Fu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Tingting Yang
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Yan Xiu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China.,Institute of Nuclear Medicine, Fudan University, Shanghai 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai 200032, People's Republic of China
| | - Qingyu Lin
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China.,Institute of Nuclear Medicine, Fudan University, Shanghai 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai 200032, People's Republic of China
| | - Dengfeng Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, People's Republic of China.,Institute of Nuclear Medicine, Fudan University, Shanghai 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai 200032, People's Republic of China
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25
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Nawab DH. Vaccinal antibodies: Fc antibody engineering to improve the antiviral antibody response and induce vaccine-like effects. Hum Vaccin Immunother 2021; 17:5532-5545. [PMID: 34844516 PMCID: PMC8903937 DOI: 10.1080/21645515.2021.1985891] [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: 04/25/2021] [Accepted: 09/21/2021] [Indexed: 10/19/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic highlights the urgent clinical need for efficient virus therapies and vaccines. Although the functional importance of antibodies is indisputable in viral infections, there are still significant unmet needs that require vast improvements in antibody-based therapeutics. The IgG Fc domain can be engineered to produce antibodies with tailored and potent responses that will meet these clinical demands. Engaging Fc receptors (FcRs) to perform effector functions as cytotoxicity, phagocytosis, complement activation, intracellular neutralization and controlling antibody persistence. Furthermore, it produces vaccine-like effects by activating signals to stimulate T-cell responses, have proven to be required for protection, as neutralization alone does not off the full protection capacity of antibodies. This review highlights antiviral Fc functions and FcRs' contributions in linking innate and adaptive immunity against viral threats. Moreover, it provides the latest Fc engineering strategies to improve the safety and efficacy of human antiviral antibodies and vaccines.
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Affiliation(s)
- Dhuha H Nawab
- Pharmacy Department, Ministry of Health, Saudi Arabia
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26
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Al Ojaimi Y, Blin T, Lamamy J, Gracia M, Pitiot A, Denevault-Sabourin C, Joubert N, Pouget JP, Gouilleux-Gruart V, Heuzé-Vourc'h N, Lanznaster D, Poty S, Sécher T. Therapeutic antibodies - natural and pathological barriers and strategies to overcome them. Pharmacol Ther 2021; 233:108022. [PMID: 34687769 PMCID: PMC8527648 DOI: 10.1016/j.pharmthera.2021.108022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 02/06/2023]
Abstract
Antibody-based therapeutics have become a major class of therapeutics with over 120 recombinant antibodies approved or under review in the EU or US. This therapeutic class has experienced a remarkable expansion with an expected acceleration in 2021-2022 due to the extraordinary global response to SARS-CoV2 pandemic and the public disclosure of over a hundred anti-SARS-CoV2 antibodies. Mainly delivered intravenously, alternative delivery routes have emerged to improve antibody therapeutic index and patient comfort. A major hurdle for antibody delivery and efficacy as well as the development of alternative administration routes, is to understand the different natural and pathological barriers that antibodies face as soon as they enter the body up to the moment they bind to their target antigen. In this review, we discuss the well-known and more under-investigated extracellular and cellular barriers faced by antibodies. We also discuss some of the strategies developed in the recent years to overcome these barriers and increase antibody delivery to its site of action. A better understanding of the biological barriers that antibodies have to face will allow the optimization of antibody delivery near its target. This opens the way to the development of improved therapy with less systemic side effects and increased patients' adherence to the treatment.
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Affiliation(s)
- Yara Al Ojaimi
- UMR 1253, iBrain, Inserm, 37000 Tours, France; University of Tours, 37000 Tours, France
| | - Timothée Blin
- University of Tours, 37000 Tours, France; UMR 1100, CEPR, Inserm, 37000 Tours, France
| | - Juliette Lamamy
- University of Tours, 37000 Tours, France; GICC, EA7501, 37000 Tours, France
| | - Matthieu Gracia
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier (ICM), Montpellier F-34298, France
| | - Aubin Pitiot
- University of Tours, 37000 Tours, France; UMR 1100, CEPR, Inserm, 37000 Tours, France
| | | | - Nicolas Joubert
- University of Tours, 37000 Tours, France; GICC, EA7501, 37000 Tours, France
| | - Jean-Pierre Pouget
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier (ICM), Montpellier F-34298, France
| | | | | | - Débora Lanznaster
- UMR 1253, iBrain, Inserm, 37000 Tours, France; University of Tours, 37000 Tours, France
| | - Sophie Poty
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier (ICM), Montpellier F-34298, France
| | - Thomas Sécher
- University of Tours, 37000 Tours, France; UMR 1100, CEPR, Inserm, 37000 Tours, France
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