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Ford JL, Karatza E, Mody H, Nagaraja Shastri P, Khajeh Pour S, Yang TY, Swanson M, Chao D, Devineni D. Clinical Pharmacology Perspective on Development of Adeno-Associated Virus Vector-Based Retina Gene Therapy. Clin Pharmacol Ther 2024; 115:1212-1232. [PMID: 38450707 DOI: 10.1002/cpt.3230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/18/2024] [Indexed: 03/08/2024]
Abstract
Adeno-associated virus (AAV) vector-based gene therapy is an innovative modality being increasingly investigated to treat diseases by modifying or replacing defective genes or expressing therapeutic entities. With its unique anatomic and physiological characteristics, the eye constitutes a very attractive target for gene therapy. Specifically, the ocular space is easily accessible and is generally considered "immune-privileged" with a low risk of systemic side effects following local drug administration. As retina cells have limited cellular turnover, a one-time gene delivery has the potential to provide long-term transgene expression. Despite the initial success with voretigene neparvovec (Luxturna), the first approved retina gene therapy, there are still challenges to be overcome for successful clinical development of these products and scientific questions to be answered. The current review paper aims to integrate published experience learned thus far for AAV-based retina gene therapy related to preclinical to clinical translation; first-in-human dose selection; relevant bioanalytical assays and strategies; clinical development considerations including trial design, biodistribution and vector shedding, immunogenicity, transgene expression, and pediatric populations; opportunities for model-informed drug development; and regulatory perspectives. The information presented herein is intended to serve as a guide to inform the clinical development strategy for retina gene therapy with a focus on clinical pharmacology.
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Affiliation(s)
| | - Eleni Karatza
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
| | - Hardik Mody
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
| | | | - Sana Khajeh Pour
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
| | - Tong-Yuan Yang
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
| | - Michael Swanson
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
| | - Daniel Chao
- Janssen Research & Development, LLC, Spring House, Pennsylvania, USA
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Wang X, Li A, Fan H, Li Y, Yang N, Tang Y. Astrocyte-Derived Extracellular Vesicles for Ischemic Stroke: Therapeutic Potential and Prospective. Aging Dis 2024; 15:1227-1254. [PMID: 37728588 PMCID: PMC11081164 DOI: 10.14336/ad.2023.0823-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/23/2023] [Indexed: 09/21/2023] Open
Abstract
Stroke is a leading cause of death and disability in the world. Astrocytes are special glial cells within the central nervous system and play important roles in mediating neuroprotection and repair processes during stroke. Extracellular vesicles (EVs) are lipid bilayer particles released from cells that facilitate intercellular communication in stroke by delivering proteins, lipids, and RNA to target cells. Recently, accumulating evidence suggested that astrocyte-derived EVs (ADEVs) are actively involved in mediating numerous biological processes including neuroprotection and neurorepair in stroke and they are realized as an excellent therapeutic approach for treating stroke. In this review we systematically summarize the up-to-date research on ADEVs in stroke, and prospects for its potential as a novel therapeutic target for stroke. We also provide an overview of the effects and functions of ADEVs on stroke recovery, which may lead to developing clinically relevant therapies for stroke.
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Affiliation(s)
- Xianghui Wang
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, China.
- School of Biomedical Engineering and Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Aihua Li
- Department of rehabilitation medicine, Jinan Hospital, Jinan, China
| | - Huaju Fan
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, China.
| | - Yanyan Li
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, China.
| | - Nana Yang
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, China.
- School of Biomedical Engineering and Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Yaohui Tang
- School of Biomedical Engineering and Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, China.
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Yaghoobizadeh F, Roayaei Ardakani M, Ranjbar MM, Khosravi M, Galehdari H. Development of a potent recombinant scFv antibody against the SARS-CoV-2 by in-depth bioinformatics study: Paving the way for vaccine/diagnostics development. Comput Biol Med 2024; 170:108091. [PMID: 38295473 DOI: 10.1016/j.compbiomed.2024.108091] [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: 05/09/2023] [Revised: 01/26/2024] [Accepted: 01/27/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND The SARS-CoV-2 has led to a worldwide disaster. Thus, developing prophylactics/therapeutics is required to overcome this public health issue. Among these, producing the anti-SARS-CoV-2 single-chain variable fragment (scFv) antibodies has attracted a significant attention. Accordingly, this study aims to address this question: Is it possible to bioinformatics-based design of a potent anti-SARS-CoV-2 scFv as an alternative to current production approaches? METHOD Using the complexed SARS-CoV-2 spike-antibodies, two sets analyses were performed: (1) B-cell epitopes (BCEs) prediction in the spike receptor-binding domain (RBD) region as a parameter for antibody screening; (2) the computational analysis of antibodies variable domains (VH/VL). Based on these primary screenings, and docking/binding affinity rating, one antibody was selected. The protein-protein interactions (PPIs) among the selected antibody-epitope complex were predicted and its epitope conservancy was also evaluated. Thereafter, some elements were added to the final scFv: (1) the PelB signal peptide; (2) a GSGGGGS linker to connect the VH-VL. Finally, this scFv was analyzed/optimized using various web servers. RESULTS Among the antibody library, only one met the various criteria for being an efficient scFv candidate. Moreover, no interaction was predicted between its paratope and RBD hot-spot residues of SARS-CoV-2 variants-of-Concern (VOCs). CONCLUSIONS Herein, a step-by-step bioinformatics platform has been introduced to bypass some barriers of traditional antibody production approaches. Based on existing literature, the current study is one of the pioneer works in the field of bioinformatics-based scFv production. This scFv may be a good candidate for diagnostics/therapeutics design against the SARS-CoV-2 as an emerging aggressive pathogen.
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Affiliation(s)
- Fatemeh Yaghoobizadeh
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Khouzestan, 6135783151, Iran.
| | - Mohammad Roayaei Ardakani
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Khouzestan, 6135783151, Iran.
| | | | - Mohammad Khosravi
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Khouzestan, 6135783151, Iran.
| | - Hamid Galehdari
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Khouzestan, 6135783151, Iran.
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Nick C. Streamlining biosimilar development based on 20 years' experience. Expert Opin Biol Ther 2024:1-11. [PMID: 38315062 DOI: 10.1080/14712598.2024.2314612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/01/2024] [Indexed: 02/07/2024]
Abstract
INTRODUCTION Biosimilar clinical programs could be streamlined by prudent application of improved methodologies and knowledge accumulated over the past 20 years. This review focuses on whether complex comparative efficacy trials are routinely needed and how to achieve a more tailored approach to biosimilar development. AREAS COVERED Key learnings over the past 20 years are summarized. It is noted that a one size fits all approach to biosimilar development is not appropriate: biological medicines fall within a wide spectrum of complexity, with blurring at the interface between biological products and small molecules. The interrelationship between quality, potency, pharmacokinetics, pharmacology, immunogenicity, efficacy, and safety are reviewed. Current regulatory thinking is reviewed with a look into what future challenges lie ahead. EXPERT OPINION To tailor regulatory requirements for marketing approval of biosimilars, it is proposed that a biosimilarity report be introduced. This report would integrate quality, pharmacology, immunogenicity, efficacy and safety findings and address how the clinical program could be tailored based on the totality of evidence.
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Affiliation(s)
- Cecil Nick
- Parexel International, Uxbridge, Middlesex, England
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Bittner B, Schmidt J. Advancing Subcutaneous Dosing Regimens for Biotherapeutics: Clinical Strategies for Expedited Market Access. BioDrugs 2024; 38:23-46. [PMID: 37831325 PMCID: PMC10789662 DOI: 10.1007/s40259-023-00626-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2023] [Indexed: 10/14/2023]
Abstract
In recent years, subcutaneous administration of biotherapeutics has made significant progress. The self-administration market for rheumatoid arthritis has witnessed the introduction of additional follow-on biologics, while the first subcutaneous dosing options for monoclonal antibodies have become available for multiple sclerosis. Oncology has also seen advancements with the authorization of high-volume subcutaneous formulations, facilitated by the development of high-concentration formulations and innovative delivery systems. Regulatory and Health Technology Assessment bodies increasingly consider preference data in filing dossiers, particularly in evaluating novel drug delivery methods. The adoption of a pharmacokinetic-based clinical bridging approach has become standard for transitioning from intravenous to subcutaneous administration. Non-inferiority studies with pharmacokinetics as the only primary endpoint have started deviating from traditional randomization schemes, favoring the subcutaneous route and comparing with historical intravenous data. While nonclinical and computational models made progress in predicting safety and immunogenicity for subcutaneously dosed antibodies, clinical trial evidence remains essential due to inter-individual variations and the impact of formulation parameters on anti-drug antibody formation. Ongoing technological advancements and the expanding knowledge base on pharmacokinetic-pharmacodynamic correlation across specialty areas are expected to further accelerate clinical development of subcutaneous biologics.
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Affiliation(s)
- Beate Bittner
- Global Product Strategy, Product Optimization, F. Hoffmann-La Roche, Grenzacher Strasse 124, 4070, Basel, Switzerland.
| | - Johannes Schmidt
- Global Product Strategy, Product Optimization, F. Hoffmann-La Roche, Grenzacher Strasse 124, 4070, Basel, Switzerland
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Gallagher CJ, Bowsher RR, Clancy A, Dover JS, Humphrey S, Liu Y, Prawdzik G. Clinical Immunogenicity of DaxibotulinumtoxinA for Injection in Glabellar Lines: Pooled Data from the SAKURA Phase 3 Trials. Toxins (Basel) 2023; 15:60. [PMID: 36668880 PMCID: PMC9862169 DOI: 10.3390/toxins15010060] [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: 11/29/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023] Open
Abstract
DaxibotulinumtoxinA for Injection (DAXI) is a novel botulinum toxin type A product containing daxibotulinumtoxinA with a stabilizing excipient peptide (RTP004). DAXI immunogenicity was assessed in three phase 3 glabellar line studies (two placebo-controlled, single-dose studies and an open-label repeat-dose safety study). Binding antibodies to daxibotulinumtoxinA and RTP004 were detected by validated ELISAs. Samples positive for daxibotulinumtoxinA-binding antibodies were evaluated further for titer and neutralizing antibodies by mouse protection assay. Overall, 2786 subjects received DAXI and 2823 subjects were exposed to RTP004 as DAXI (n = 2786) or placebo (n = 37). Treatment-related anti-daxibotulinumtoxinA binding antibodies were detected in 21 of 2737 evaluable subjects (0.8%). No subject developed neutralizing antibodies. Treatment-related anti-RTP004 binding antibodies were detected in 35 (1.3%) of 2772 evaluable subjects. Binding antibodies were generally transient, of low titer (<1:200), and no subject had binding antibodies to both daxibotulinumtoxinA and RTP004. All subjects with treatment-induced binding antibodies to daxibotulinumtoxinA or RTP004 achieved none or mild glabellar line severity at Week 4 following each DAXI cycle, indicating no impact on DAXI efficacy. No subjects with binding antibodies to daxibotulinumtoxinA or RTP004 reported immune-related adverse events. This evaluation of anti-drug antibody formation with DAXI shows low rates of antibody formation to both daxibotulinumtoxinA and RTP004.
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Affiliation(s)
| | | | | | | | - Shannon Humphrey
- Department of Dermatology and Skin Science, University of British Columbia and Humphrey Cosmetic Dermatology, Vancouver, BC V5Z 4E1, Canada
| | - Yan Liu
- Revance Therapeutics, Inc., Nashville, TN 37203, USA
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Wessels U, Zadak M, Weidmann AM, Stuchly T, Stubenrauch KG. Preclinical Observations of Systemic and Ocular Antidrug Antibody Response to Intravitreally Administered Drugs. AAPS J 2022; 25:2. [PMID: 36414857 DOI: 10.1208/s12248-022-00766-2] [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: 08/10/2022] [Accepted: 10/26/2022] [Indexed: 11/24/2022] Open
Abstract
Intravitreally administered biotherapeutics can elicit local and systemic immune responses with potentially serious clinical consequences. However, little is known about the mechanisms of ocular antidrug immune response, the incidence of ocular antidrug antibodies (ADAs), and the relationship between ocular and systemic ADA levels. Bioanalytical limitations and poor availability of ocular matrices make studies of ocular immunogenicity particularly challenging. We have recently reported a novel bioanalytical ADA assay and shown its applicability for the ADA detection in ocular matrices. In the present study, we used this assay to analyze a large set of preclinical samples from minipig and cynomolgus monkeys treated with different ocular biotherapeutics. We found a significant association between the incidence of ADAs in plasma and ocular fluids after a single intravitreal administration of the drugs. Importantly, none of the animals with ADA-negative results in plasma had detectable ADAs in ocular fluids and systemic ADA response always preceded the appearance of ocular ADAs. Overall, our results suggest the systemic origin of ocular ADAs and support the use of plasma as a surrogate matrix for the detection of ocular ADA response.
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Affiliation(s)
- Uwe Wessels
- Roche Pharma Research & Early Development, Pharmaceutical Sciences, Roche Innovation Center Munich, Roche Diagnostics GmbH, Nonnenwald 2, 82377, Penzberg, Germany.
| | - Markus Zadak
- Roche Pharma Research & Early Development, Pharmaceutical Sciences, Roche Innovation Center Munich, Roche Diagnostics GmbH, Nonnenwald 2, 82377, Penzberg, Germany
| | - Anja Manuela Weidmann
- Roche Pharma Research & Early Development, Pharmaceutical Sciences, Roche Innovation Center Munich, Roche Diagnostics GmbH, Nonnenwald 2, 82377, Penzberg, Germany
| | - Thomas Stuchly
- Roche Pharma Research & Early Development, Pharmaceutical Sciences, Roche Innovation Center Munich, Roche Diagnostics GmbH, Nonnenwald 2, 82377, Penzberg, Germany
| | - Kay-Gunnar Stubenrauch
- Roche Pharma Research & Early Development, Pharmaceutical Sciences, Roche Innovation Center Munich, Roche Diagnostics GmbH, Nonnenwald 2, 82377, Penzberg, Germany
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Sasikumar PG, Ramachandra M. Small Molecule Agents Targeting PD-1 Checkpoint Pathway for Cancer Immunotherapy: Mechanisms of Action and Other Considerations for Their Advanced Development. Front Immunol 2022; 13:752065. [PMID: 35585982 PMCID: PMC9108255 DOI: 10.3389/fimmu.2022.752065] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 03/29/2022] [Indexed: 12/20/2022] Open
Abstract
Pioneering success of antibodies targeting immune checkpoints such as programmed cell death protein 1 (PD-1) and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) has changed the outlook of cancer therapy. Although these antibodies show impressive durable clinical activity, low response rates and immune-related adverse events are becoming increasingly evident in antibody-based approaches. For further strides in cancer immunotherapy, novel treatment strategies including combination therapies and alternate therapeutic modalities are highly warranted. Towards this discovery and development of small molecule, checkpoint inhibitors are actively being pursued, and the efforts have culminated in the ongoing clinical testing of orally bioavailable checkpoint inhibitors. This review focuses on the small molecule agents targeting PD-1 checkpoint pathway for cancer immunotherapy and highlights various chemotypes/scaffolds and their characterization including binding and functionality along with reported mechanism of action. The learnings from the ongoing small molecule clinical trials and crucial points to be considered for their clinical development are also discussed.
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Lucas AT, Moody A, Schorzman AN, Zamboni WC. Importance and Considerations of Antibody Engineering in Antibody-Drug Conjugates Development from a Clinical Pharmacologist's Perspective. Antibodies (Basel) 2021; 10:30. [PMID: 34449544 PMCID: PMC8395454 DOI: 10.3390/antib10030030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/04/2021] [Accepted: 07/16/2021] [Indexed: 12/12/2022] Open
Abstract
Antibody-drug conjugates (ADCs) appear to be in a developmental boom, with five FDA approvals in the last two years and a projected market value of over $4 billion by 2024. Major advancements in the engineering of these novel cytotoxic drug carriers have provided a few early success stories. Although the use of these immunoconjugate agents are still in their infancy, valuable lessons in the engineering of these agents have been learned from both preclinical and clinical failures. It is essential to appreciate how the various mechanisms used to engineer changes in ADCs can alter the complex pharmacology of these agents and allow the ADCs to navigate the modern-day therapeutic challenges within oncology. This review provides a global overview of ADC characteristics which can be engineered to alter the interaction with the immune system, pharmacokinetic and pharmacodynamic profiles, and therapeutic index of ADCs. In addition, this review will highlight some of the engineering approaches being explored in the creation of the next generation of ADCs.
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Affiliation(s)
- Andrew T. Lucas
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (A.T.L.); (A.N.S.)
- Carolina Center of Cancer Nanotechnology Excellence, UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Amber Moody
- Carolina Center of Cancer Nanotechnology Excellence, UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Allison N. Schorzman
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (A.T.L.); (A.N.S.)
| | - William C. Zamboni
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; (A.T.L.); (A.N.S.)
- Carolina Center of Cancer Nanotechnology Excellence, UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
- Glolytics, LLC, Chapel Hill, NC 27517, USA
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