1
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Henise J, Hangasky JA, Charych D, Carreras CW, Ashley GW, Santi DV. A platform technology for ultra-long acting intratumoral therapy. Sci Rep 2024; 14:14000. [PMID: 38890412 PMCID: PMC11189489 DOI: 10.1038/s41598-024-64261-8] [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: 02/18/2024] [Accepted: 06/06/2024] [Indexed: 06/20/2024] Open
Abstract
Intratumoral (IT) therapy is a powerful method of controlling tumor growth, but a major unsolved problem is the rapidity that injected drugs exit tumors, limiting on-target exposure and efficacy. We have developed a generic long acting IT delivery system in which a drug is covalently tethered to hydrogel microspheres (MS) by a cleavable linker; upon injection the conjugate forms a depot that slowly releases the drug and "bathes" the tumor for long periods. We established technology to measure tissue pharmacokinetics and studied MSs attached to SN-38, a topoisomerase 1 inhibitor. When MS ~ SN-38 was injected locally, tissues showed high levels of SN-38 with a long half-life of ~ 1 week. IT MS ~ SN-38 was ~ tenfold more efficacious as an anti-tumor agent than systemic SN-38. We also propose and provide an example that long-acting IT therapy might enable safe use of two drugs with overlapping toxicities. Here, long-acting IT MS ~ SN-38 is delivered with concurrent systemic PARP inhibitor. The tumor is exposed to both drugs whereas other tissues are exposed only to the systemic drug; synergistic anti-tumor activity supported the validity of this approach. We propose use of this approach to increase efficacy and reduce toxicities of combinations of immune checkpoint inhibitors such as αCTLA-4 and αPD-1.
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Affiliation(s)
- Jeff Henise
- ProLynx, 135 Mississippi Street, San Francisco, CA, 94107, USA
| | - John A Hangasky
- ProLynx, 135 Mississippi Street, San Francisco, CA, 94107, USA
| | - Deborah Charych
- Nektar, 455 Mission Bay Blvd. South, San Francisco, CA, USA
- ShynianBio Inc., 1001 17th St., San Francisco, CA, 94107, USA
| | | | - Gary W Ashley
- ProLynx, 135 Mississippi Street, San Francisco, CA, 94107, USA
| | - Daniel V Santi
- ProLynx, 135 Mississippi Street, San Francisco, CA, 94107, USA.
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2
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Baek J, Song N, Yoo B, Lee D, Kim BS. Precisely Programmable Degradation and Drug Release Profiles in Triblock Copolyether Hydrogels with Cleavable Acetal Pendants. J Am Chem Soc 2024; 146:13836-13845. [PMID: 38717976 DOI: 10.1021/jacs.3c14838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Hydrogels hold significant promise as drug delivery systems due to their distinct advantage of sustained localized drug release. However, the challenge of regulating the initial burst release while achieving precise control over degradation and drug-release kinetics persists. Herein, we present an ABA-type triblock copolymer-based hydrogel system with precisely programmable degradation and release kinetics. The resulting hydrogels were designed with a hydrophilic poly(ethylene oxide) midblock and a hydrophobic end-block composed of polyethers with varying ratios of ethoxyethyl glycidyl ether and tetrahydropyranyl glycidyl ether acetal pendant possessing different hydrolysis kinetics. This unique side-chain strategy enabled us to achieve a broad spectrum of precise degradation and drug-release profiles under mildly acidic conditions while maintaining the cross-linking density and viscoelastic modulus, which is unlike the conventional polyester-based backbone degradation system. Furthermore, programmable degradation of the hydrogels and release of active therapeutic agent paclitaxel loaded therein are demonstrated in an in vivo mouse model by suppressing tumor recurrence following surgical resection. Tuning of the fraction of two acetal pendants in the end-block provided delicate tailoring of hydrogel degradation and the drug release capability to achieve the desired therapeutic efficacy. This study not only affords a facile means to design hydrogels with precisely programmable degradation and release profiles but also highlights the critical importance of aligning the drug release profile with the target disease.
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Affiliation(s)
- Jinsu Baek
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Nanhee Song
- Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Byungwoo Yoo
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Dongwon Lee
- Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Byeong-Su Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
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3
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Meng Z, Löser L, Saalwächter K, Gasser U, Klok HA. Disulfide-Cross-Linked Tetra-PEG Gels. Macromolecules 2024; 57:3058-3065. [PMID: 38616809 PMCID: PMC11008237 DOI: 10.1021/acs.macromol.3c02514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 04/16/2024]
Abstract
The preparation of polymer gels via cross-linking of four-arm star-shaped poly(ethylene glycol) (Tetra-PEG) precursors is an attractive strategy to prepare networks with relatively well-defined topologies. Typically, Tetra-PEG gels are obtained by cross-linking heterocomplementary reactive Tetra-PEG precursors. This study, in contrast, explores the cross-linking of self-reactive, thiol-end functional Tetra-PEG macromers to form disulfide-cross-linked gels. The structure of the disulfide-cross-linked Tetra-PEG gels was studied with multiple-quantum NMR (MQ-NMR) spectroscopy and small-angle neutron scattering (SANS) experiments. In line with earlier simulation studies, these experiments showed a strong dependence of the relative fractions of the different network connectivities on the concentration of the thiol-end functional Tetra-PEG macromer that was used for the synthesis of the networks. Disulfide-cross-linked Tetra-PEG gels prepared at macromer concentrations below the overlap concentration (c = 0.66c*) primarily feature defect connectivity motifs, such as primary loops and dangling ends. For networks prepared at macromer concentrations above the overlap concentration, the fraction of single-link connectivities was found to be similar to that in amide-cross-linked Tetra-PEG gels obtained by heterocomplementary cross-linking of N-hydroxysuccinimide ester and amine functional Tetra-PEG macromers. Since disulfide bonds are susceptible to reductive cleavage, these disulfide-cross-linked gels are of interest, e.g., as reduction-sensitive hydrogels for a variety of biomedical applications.
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Affiliation(s)
- Zhao Meng
- Institut
des Matériaux and Institut des Sciences et Ingénierie
Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
- Swiss
National Center for Competence in Research (NCCR) Bio-inspired Materials, University of Fribourg, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - Lucas Löser
- Institut
für Physik - NMR, Martin-Luther Universität
Halle-Wittenberg, Betty-Heimann-Str. 7, 06120 Halle (Saale), Germany
| | - Kay Saalwächter
- Institut
für Physik - NMR, Martin-Luther Universität
Halle-Wittenberg, Betty-Heimann-Str. 7, 06120 Halle (Saale), Germany
| | - Urs Gasser
- Laboratory
for Neutron Scattering and Imaging (LNS), Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Harm-Anton Klok
- Institut
des Matériaux and Institut des Sciences et Ingénierie
Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
- Swiss
National Center for Competence in Research (NCCR) Bio-inspired Materials, University of Fribourg, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
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4
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Ciaramitaro V, Piacenza E, Meo PL, Librici C, Calvino MM, Conte P, Lazzara G, Chillura Martino DF. From micro to macro: Physical-chemical characterization of wheat starch-based films modified with PEG200, sodium citrate, or citric acid. Int J Biol Macromol 2023; 253:127225. [PMID: 37797849 DOI: 10.1016/j.ijbiomac.2023.127225] [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: 03/14/2023] [Revised: 09/25/2023] [Accepted: 10/01/2023] [Indexed: 10/07/2023]
Abstract
Needing to extend the shelf-life of packaged food and the evolving consumer demands led researchers to seek innovative, eco-friendly, and biocompatible packaging solutions. Starch is among the most promising natural and renewable alternatives to non-degradable plastics. Here, we deeply study the structural features of starch films modified by adding citric acid (CA) or sodium citrate (SC) as a cross-linker and polyethylene glycol 200 (PEG200) as a plasticizer and obtained through solvent casting. The substances' influence on starch films was evaluated through Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) and Solid-state Nuclear Magnetic Resonance (ss-NMR) spectroscopies. Films' macroscopic properties, such as swelling index, solubility, thermo-mechanical features, and moisture absorption, were also assessed to foresee potential applications. Proper amounts of CA, CS, and PEG200 improve film properties and inhibit starch chains' retrogradation and recrystallization. Besides, the chemical neighbourhood of nuclei observed through ss-NMR significantly changed alongside the polymer chains' mobility. The latter result indicates a different polymer chain structural organization that could justify the film's higher resistance to thermal degradation and elongation at the break. This methodological approach is effective in predicting the macroscopic behaviour of a polymeric material and could be helpful for the application of such products in food preservation.
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Affiliation(s)
- Veronica Ciaramitaro
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze pad. 17, 90128 Palermo, Italy
| | - Elena Piacenza
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze pad. 17, 90128 Palermo, Italy.
| | - Paolo Lo Meo
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze pad. 17, 90128 Palermo, Italy.
| | - Calogero Librici
- Department of Agricultural, Food and Forest Sciences, Università degli Studi di Palermo, Viale delle Scienze pad. 4, Palermo, Italy
| | - Martina M Calvino
- Department of Physics and Chemistry - Emilio Segrè, Università degli Studi di Palermo, Viale delle Scienze pad. 17, Palermo, Italy
| | - Pellegrino Conte
- Department of Agricultural, Food and Forest Sciences, Università degli Studi di Palermo, Viale delle Scienze pad. 4, Palermo, Italy
| | - Giuseppe Lazzara
- Department of Physics and Chemistry - Emilio Segrè, Università degli Studi di Palermo, Viale delle Scienze pad. 17, Palermo, Italy
| | - Delia F Chillura Martino
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), Università degli Studi di Palermo, Viale delle Scienze pad. 17, 90128 Palermo, Italy
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5
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Brady SR, Gohsman SB, Sepulveda K, Weaver JD. Engineering synthetic poly(ethylene) glycol-based hydrogels compatible with injection molding biofabrication. J Biomed Mater Res A 2023; 111:814-824. [PMID: 36866410 DOI: 10.1002/jbm.a.37523] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 03/04/2023]
Abstract
Hydrogel injection molding is a biofabrication method that is useful for the rapid generation of complex cell-laden hydrogel geometries, with potential utility in biomanufacturing products for tissue engineering applications. Hydrogel injection molding requires that hydrogel polymers have sufficiently delayed crosslinking times to enable injection and molding prior to gelation. In this work, we explore the feasibility of injection molding synthetic poly(ethylene) glycol (PEG)-based hydrogels functionalized with strain promoted azide-alkyne cycloaddition click chemistry functional groups. We evaluate the mechanical properties of a PEG-based hydrogel library, including time to gelation and successful generation of complex geometries via injection molding. We evaluate the binding and retention of adhesive ligand RGD within the library matrices and characterize the viability and function of encapsulated cells. This work demonstrates the feasibility of injection molding synthetic PEG-based hydrogels for tissue engineering applications, with potential utility in the clinic and biomanufacturing.
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Affiliation(s)
- Sarah R Brady
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
| | - Simone B Gohsman
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
| | - Keven Sepulveda
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
| | - Jessica D Weaver
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
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6
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Nurlidar F, Puji Rahayu D, Lasmawati D, Lestari Yunus A, Heryani R, Suryani N. A Simple Method for The Simultaneous Encapsulation of Ciprofloxacin into PEGDA/Alginate Hydrogels using Gamma Irradiation. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
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7
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Zhang Q, Zhai W, Cui L, Liu Y, Xie W, Yu Q, Luo H. Physicochemical properties and antibacterial activity of polylactic acid/starch acetate films incorporated with chitosan and tea polyphenols. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04691-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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8
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Rose KA, Marino E, O'Bryan CS, Murray CB, Lee D, Composto RJ. Nanoparticle dynamics in hydrogel networks with controlled defects. SOFT MATTER 2022; 18:9045-9056. [PMID: 36416054 DOI: 10.1039/d2sm01224c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The effect of nanoscale defects on nanoparticle dynamics in defective tetra-poly(ethylene glycol) (tetra-PEG) hydrogels is investigated using single particle tracking. In a swollen nearly homogeneous hydrogel, PEG-functionalized quantum dot (QD) probes with a similar hydrodynamic diameter (dh = 15.1 nm) to the mesh size (〈ξs〉 = 16.3 nm), are primarily immobile. As defects are introduced to the network by reaction-tuning, both the percentage of mobile QDs and the size of displacements increase as the number and size of the defects increase with hydrolysis time, although a large portion of the QDs remain immobile. To probe the effect of nanoparticle size on dynamics in defective networks, the transport of dh = 47.1 nm fluorescent polystyrene (PS) and dh = 9.6 nm PEG-functionalized QDs is investigated. The PS nanoparticles are immobile in all hydrogels, even in highly defective networks with an open structure. Conversely, the smaller QDs are more sensitive to perturbations in the network structure with an increased percentage of mobile particles and larger diffusion coefficients compared to the larger QDs and PS nanoparticles. The differences in nanoparticle mobility as a function of size suggests that particles of different sizes probe different length scales of the defects, indicating that metrics such as the confinement ratio alone cannot predict bulk dynamics in these systems. This study provides insight into designing hydrogels with controlled transport properties, with particular importance for degradable hydrogels for drug delivery applications.
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Affiliation(s)
- Katie A Rose
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Emanuele Marino
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Palermo, 90123, Italy
| | - Christopher S O'Bryan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, 65211, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Russell J Composto
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
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9
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Hu H, Sun H, Jiang Z, Wang S, Liu C, Zou M, Ju R, Feng Z, Liu W, Wang T, Han B. Study on repair of abdominal wall defect rats with hernia mesh coated with chitosan-based photosensitive hydrogel. Carbohydr Polym 2022; 291:119577. [DOI: 10.1016/j.carbpol.2022.119577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/15/2022] [Accepted: 05/03/2022] [Indexed: 11/02/2022]
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10
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A long-acting C-natriuretic peptide for achondroplasia. Proc Natl Acad Sci U S A 2022; 119:e2201067119. [PMID: 35858423 PMCID: PMC9335275 DOI: 10.1073/pnas.2201067119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The C-natriuretic peptide (CNP) analog vosoritide has recently been approved for treatment of achondroplasia in children. However, the regimen requires daily subcutaneous injections in pediatric patients over multiple years. The present work sought to develop a long-acting CNP that would provide efficacy equal to or greater than that of vosoritide but require less frequent injections. We used a technology for half-life extension, whereby a drug is attached to tetra-polyethylene glycol hydrogels (tetra-PEG) by β-eliminative linkers that cleave at predetermined rates. These hydrogels-fabricated as uniform ∼60-μm microspheres-are injected subcutaneously, where they serve as a stationary depot to slowly release the drug into the systemic circulation. We prepared a highly active, stable CNP analog-[Gln6,14]CNP-38-composed of the 38 C-terminal amino acids of human CNP-53 containing Asn to Gln substitutions to preclude degradative deamidation. Two microsphere [Gln6,14]CNP-38 conjugates were prepared, with release rates designed to allow once-weekly and once-monthly administration. After subcutaneous injection of the conjugates in mice, [Gln6,14]CNP-38 was slowly released into the systemic circulation and showed biphasic elimination pharmacokinetics with terminal half-lives of ∼200 and ∼600 h. Both preparations increased growth of mice comparable to or exceeding that produced by daily vosoritide. Simulations of the pharmacokinetics in humans indicated that plasma [Gln6,14]CNP-38 levels should be maintained within a therapeutic window over weekly, biweekly, and likely, monthly dosing intervals. Compared with vosoritide, which requires ∼30 injections per month, microsphere [Gln6,14]CNP-38 conjugates-especially the biweekly and monthly dosing-could provide an alternative that would be well accepted by physicians, patients, and patient caregivers.
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11
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Hangasky JA, Chen W, Dubois SP, Daenthanasanmak A, Müller JR, Reid R, Waldmann TA, Santi DV. A very long-acting IL-15: implications for the immunotherapy of cancer. J Immunother Cancer 2022; 10:e004104. [PMID: 35101947 PMCID: PMC8804710 DOI: 10.1136/jitc-2021-004104] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2021] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Interleukin-15 (IL-15) is an important cytokine necessary for proliferation and maintenance of natural killer (NK) and CD8+ T cells, and with great promise as an immuno-oncology therapeutic. However, IL-15 has a very short half-life and a single administration does not provide the sustained exposure required for optimal stimulation of target immune cells. The purpose of this work was to develop a very long-acting prodrug that would maintain IL-15 within a narrow therapeutic window for long periods-similar to a continuous infusion. METHODS We prepared and characterized hydrogel microspheres (MS) covalently attached to IL-15 (MS~IL-15) by a releasable linker. The pharmacokinetics and pharmacodynamics of MS~IL-15 were determined in C57BL/6J mice. The antitumor activity of MS~IL-15 as a single agent, and in combination with a suitable therapeutic antibody, was tested in a CD8+ T cell-driven bilateral transgenic adenocarcinoma mouse prostate (TRAMP)-C2 model of prostatic cancer and a NK cell-driven mouse xenograft model of human ATL (MET-1) murine model of adult T-cell leukemia. RESULTS On subcutaneous administration to mice, the cytokine released from the depot maintained a long half-life of about 168 hours over the first 5 days, followed by an abrupt decrease to about ~30 hours in accordance with the development of a cytokine sink. A single injection of MS~IL-15 caused remarkably prolonged expansions of NK and ɣδ T cells for 2 weeks, and CD44hiCD8+ T cells for 4 weeks. In the NK cell-driven MET-1 murine model of adult T-cell leukemia, single-agent MS~IL-1550 μg or anti-CCR4 provided modest increases in survival, but a combination-through antibody-depedent cellular cytotoxicity (ADCC)-significantly extended survival. In a CD8+ T cell-driven bilateral TRAMP-C2 model of prostatic cancer, single agent subcutaneous MS~IL-15 or unilateral intratumoral agonistic anti-CD40 showed modest growth inhibition, but the combination exhibited potent, prolonged bilateral antitumor activity. CONCLUSIONS Our results show MS~IL-15 provides a very long-acting IL-15 with low Cmax that elicits prolonged expansion of target immune cells and high anticancer activity, especially when administered in combination with a suitable immuno-oncology agent.
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Affiliation(s)
| | - Wei Chen
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Sigrid P Dubois
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Anusara Daenthanasanmak
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Jürgen R Müller
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Ralph Reid
- ProLynx Inc, San Francisco, California, USA
| | - Thomas A Waldmann
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
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12
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Xu H, Wu T, Huang L. Therapeutic and delivery strategies of phytoconstituents for renal fibrosis. Adv Drug Deliv Rev 2021; 177:113911. [PMID: 34358538 DOI: 10.1016/j.addr.2021.113911] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/07/2021] [Accepted: 07/29/2021] [Indexed: 12/11/2022]
Abstract
Chronic kidney disease (CKD) is one of the most common diseases endangering human health and life. By 2030, 14 per 100,000 people may die from CKD. Renal fibrosis (RF) is an important intermediate link and the final pathological change during CKD progression to the terminal stage. Therefore, identifying safe and effective treatment methods for RF has become an important goal. In 2018, the World Health Organization introduced traditional Chinese medicine into its effective global medical program. Various phytoconstituents that affect the RF process have been extracted from different plants. Here, we review the potential therapeutic capabilities of active phytoconstituents in RF treatment and discuss how phytoconstituents can be structurally modified or combined with other ingredients to enhance efficiency and reduce toxicity. We also summarize phytoconstituent delivery strategies to overcome renal barriers and improve bioavailability and targeting.
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Affiliation(s)
- Huan Xu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, People's Republic of China.
| | - Tianyi Wu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, People's Republic of China
| | - Leaf Huang
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
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13
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Hearn BR, Fontaine SD, Schneider EL, Kraemer Y, Ashley GW, Santi DV. Attenuation of the Reaction of Michael Acceptors with Biologically Important Nucleophiles. Bioconjug Chem 2021; 32:794-800. [PMID: 33822591 DOI: 10.1021/acs.bioconjchem.1c00075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
β-Elimination of drugs tethered to macromolecular carbamates provides a platform for drug half-life extension. However, the macromolecular Michael acceptor products formed upon drug release can potentially react with biological amines and thiols and may raise concerns about safety. We desired to mitigate this possibility by developing linkers that have predictable rates of β-elimination but suppressed rates of nucleophilic addition to their Michael acceptor products. We prepared Michael acceptor products of β-eliminative linkers that contained a methyl group at the Cβ carbon or a gem-dimethyl group at the Cγ carbon and studied the kinetics of their reactions with the most prevalent biological nucleophiles-amine and thiol groups. Aza-Michael reactions with glycine are slowed about 20-fold by methylation of the β-carbon and 175-fold with a gem-dimethyl group at the γ-carbon. Likewise, addition of the glutathione thiol to γ-gem-dimethyl Michael acceptors was retarded 7-24-fold compared to parent unsubstituted linkers. It was estimated that in an in vivo environment of ∼0.5 mM macromolecular thiols or ∼20 mM macromolecular amines-as in plasma-the reaction half-life of a typical Michael acceptor with a γ-gem-dimethyl linker could exceed 3 years for thiols or 25 years for amines. We also prepared a large series of γ-gem-dimethyl β-eliminative linkers and showed excellent structure-activity relationships of elimination rates with corresponding unsubstituted parent linkers. Finally, we compared the first-generation unsubstituted and new gem-dimethyl β-eliminative linkers in a once-monthly drug delivery system of a 39 amino acid peptide. Both linkers provided the desired half-life extension of the peptide, but the Michael acceptor formed from the gem-dimethyl linker was much less reactive. We conclude that the γ-gem-dimethyl β-eliminative linkers provide high flexibility and greatly reduce potential reactions of Michael acceptor products with biologically important nucleophiles.
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Affiliation(s)
- Brian R Hearn
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
| | - Shaun D Fontaine
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
| | - Eric L Schneider
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
| | - Yannick Kraemer
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
| | - Gary W Ashley
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
| | - Daniel V Santi
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, California 94158, United States
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14
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Geng X, Xu ZQ, Tu CZ, Peng J, Jin X, Ye L, Zhang AY, Gu YQ, Feng ZG. Hydrogel Complex Electrospun Scaffolds and Their Multiple Functions in In Situ Vascular Tissue Engineering. ACS APPLIED BIO MATERIALS 2021; 4:2373-2384. [DOI: 10.1021/acsabm.0c01225] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xue Geng
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
| | - Ze-Qin Xu
- Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Cheng-Zhao Tu
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
| | - Jia Peng
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
| | - Xin Jin
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
| | - Lin Ye
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
| | - Ai-Ying Zhang
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
| | - Yong-Quan Gu
- Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - Zeng-Guo Feng
- School of Materials Science & Engineering, Beijing Institution of Technology, Beijing 100081, China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing 100081, China
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Prusty K, Swain SK. Polypropylene oxide/polyethylene oxide‐cellulose hybrid nanocomposite hydrogels as drug delivery vehicle. J Appl Polym Sci 2020. [DOI: 10.1002/app.49921] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kalyani Prusty
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur Odisha India
| | - Sarat K. Swain
- Department of Chemistry Veer Surendra Sai University of Technology Sambalpur Odisha India
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16
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Zhang K, Su T, Cheng F, Lin Y, Zhou M, Zhu P, Li R, Wu D. Effect of sodium citrate/polyethylene glycol on plasticization and retrogradation of maize starch. Int J Biol Macromol 2020; 154:1471-1477. [DOI: 10.1016/j.ijbiomac.2019.11.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/03/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
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Li D, Zhou J, Zhang M, Ma Y, Yang Y, Han X, Wang X. Long-term delivery of alendronate through an injectable tetra-PEG hydrogel to promote osteoporosis therapy. Biomater Sci 2020; 8:3138-3146. [PMID: 32352105 DOI: 10.1039/d0bm00376j] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Pharmacotherapy for hypercalcemia, which is mainly caused by osteoporosis, is an effective method to regulate the in vivo calcium equilibrium. From this perspective, the development of a minimally invasive gelling system for the prolonged local delivery of bisphosphonates has practical significance in the clinical therapy of bone osteoporosis. Here, a biocompatible and injectable hydrogel based on a uniform tetra-PEG network carrying a PEG-modified alendronate (ALN) prodrug for the localized elution and long-term sustained release of anti-osteoporotic small molecule drugs is reported. The obtained ALN-based tetra-PEG hydrogels exhibit rapid gel formation and excellent injectability, thereby allowing for the easy injection and consequent adaptation of hydrogels into the bone defects with irregular shapes, which promotes the ALN-based tetra-PEG hydrogels with depot formulation capacity for governing the on-demand release of ALN drugs and local reinforcement of bone osteoporosis at the implantation sites of animals. The findings imply that these injectable hydrogels mediate the optimized release of therapeutic cargoes and effectively promote in situ bone regeneration via minimally invasive procedures, which is effective for clinical osteoporosis therapy.
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Affiliation(s)
- Dawei Li
- The 8th Medical Center of Chinese PLA General Hospital, Beijing, China.
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18
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Zhang Z, Pinnaratip R, Ong KG, Lee BP. Correlating the mass and mechanical property changes during the degradation of PEG-based adhesive. J Appl Polym Sci 2020; 137:10.1002/app.48451. [PMID: 32089564 PMCID: PMC7034855 DOI: 10.1002/app.48451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/01/2019] [Indexed: 12/19/2022]
Abstract
Change in mechanical property of a degrading adhesive is critical to its performance. However, characterization of degradation behavior is often limited to tracking its mass loss. 4-armed PEG end modified with dopamine (PEG-DA) was used as a model bioadhesive to correlate its change in mass with change in mechanical property. Shear modulus (G) was calculated based on the mass and average molecular weight between crosslinks( M ¯ c ) of PEG-DA, while the storage modulus (G') was determined by oscillatory rheometry. G decreased slowly within the first week of degradation (10% reduction by week 2), while G' decreased by 60% during the same period. This large discrepancy is due to the partially disconnected and elastically ineffective PEG polymer, which is trapped within the adhesive network. This resulted in minimal mass change and higher calculated G value during the earlier time points. Therefore, tracking mass loss profile alone is inadequate to completely describe the degradation behavior of an adhesive. Additionally, PEG-DA was coated onto magnetoelastic (ME) sensors, and the change in the resonance amplitude of the sensor corresponded well with dry mass loss of PEG-DA. ME sensing provide a non-destructive method to track the mass loss of the coated adhesive.
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Affiliation(s)
- Zhongtian Zhang
- Michigan Technological University, 1400 Townsend Drive, 49931, USA
| | | | - Keat G Ong
- Michigan Technological University, 1400 Townsend Drive, 49931, USA
| | - Bruce P Lee
- Michigan Technological University, 1400 Townsend Drive, 49931, USA
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19
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Parrish E, Rose KA, Cargnello M, Murray CB, Lee D, Composto RJ. Nanoparticle diffusion during gelation of tetra poly(ethylene glycol) provides insight into nanoscale structural evolution. SOFT MATTER 2020; 16:2256-2265. [PMID: 32031561 DOI: 10.1039/c9sm02192b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Single particle tracking (SPT) of PEG grafted nanoparticles (NPs) was used to examine the gelation of tetra poly(ethylene glycol) (TPEG) succinimidyl glutarate (TPEG-SG) and amine (TPEG-A) terminated 4-armed stars. As concentration was decreased from 40 to 20 mg mL-1, the onset of network formation, tgel, determined from rheometry increased from less than 2 to 44 minutes. NP mobility increased as polymer concentration decreased in the sol state, but remained diffusive at times past the tgel determined from rheometry. Once in the gel state, NP mobility decreased, became sub-diffusive, and eventually localized in all concentrations. The NP displacement distributions were investigated to gain insight into the nanoscale environment. In these relatively homogeneous gels, the onset of sub-diffusivity was marked by a rapid increase in dynamic heterogeneity followed by a decrease consistent with a homogeneous network. We propose a gelation mechanism in which clusters initially form a heterogeneous structure which fills in to form a fully gelled relatively homogenous network. This work aims to examine the kinetics of TPEG gelation and the homogeneity of these novel gels on the nanometer scale, which will aid in the implementation of these gels in biomedical or filtration applications.
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Affiliation(s)
- Emmabeth Parrish
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA.
| | - Katie A Rose
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Matteo Cargnello
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, Stanford, CA, USA
| | - Christopher B Murray
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA. and Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Russell J Composto
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA. and Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, USA and Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
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20
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Schneider EL, Reid R, Parkes DG, Lutz TA, Ashley GW, Santi DV. A once-monthly GLP-1 receptor agonist for treatment of diabetic cats. Domest Anim Endocrinol 2020; 70:106373. [PMID: 31479925 DOI: 10.1016/j.domaniend.2019.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 06/28/2019] [Accepted: 07/01/2019] [Indexed: 12/23/2022]
Abstract
There is growing evidence that peptidic glucagon-like peptide-1 receptor agonists (GLP-1RA), such as exenatide, may provide useful therapeutic options for treatment of feline diabetes. However, because such drugs are administered subcutaneously, it is desirable that they be long-acting and not require frequent injections. We have developed a chemically controlled delivery system to support half-life extension of peptidic therapeutics. Here, the peptide is covalently attached to hydrogel microspheres by a self-cleaving β-eliminative linker; after subcutaneous injection of the microspheres, the peptide is slowly released from the depot to the systemic circulation. Using this technology, we developed a delivery system that supports once-monthly administration of a stable exenatide analog, [Gln28]exenatide, in rodents (Schneider, et al, ACS Chem Biol 12, 2107 to 2116, 2017). The purposes of the present study were a) to demonstrate pharmacokinetic and pharmacodynamic similarities of the deamidation-sensitive GLP-1RA exenatide and the closely related, more stable [Gln28]exenatide and b) to develop a long-acting GLP-1RA in cats. The results show that exenatide and [Gln28]exenatide injected intravenously or subcutaneously at 10 μg/kg have nearly identical pharmacokinetics in the cat-both having elimination half-lives of ∼40 min-but subcutaneously administered [Gln28]exenatide has superior bioavailability-93% for [Gln28]exenatide vs 52% for exenatide. The results also show that exenatide and [Gln28]exenatide have similar insulinotropic activities in the cat during a high-dose intravenous glucose tolerance test; they increased the area under the curve (AUC) for insulin to a similar extent but had no effect on glucose AUC. Finally, subcutaneous injection of a microsphere-[Gln28]exenatide conjugate containing an appropriate self-cleaving linker in the cat provides plasma [Gln28]exenatide with a half-life of about 40 d vs 40 min with the injected free peptide. Hence, the large body of information available for exenatide can be used to facilitate clinical development of [Gln28]exenatide as a treatment for feline diabetes, and the microsphere-[Gln28]exenatide conjugate is quite suitable for once-monthly subcutaneous administration of the peptide in the cat.
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Affiliation(s)
| | - R Reid
- ProLynx, San Francisco, CA, USA
| | | | - T A Lutz
- University of Zurich, Institute of Veterinary Physiology, Zurich, Switzerland
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Wang J, Chen Q, Shan Y, Pan X, Zhang J. Activity-based proteomic profiling: application of releasable linker in photoaffinity probes. Drug Discov Today 2020; 25:133-140. [DOI: 10.1016/j.drudis.2019.10.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/21/2019] [Accepted: 10/31/2019] [Indexed: 02/07/2023]
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A novel folic acid hydrogel loading β-cyclodextrin/camptothecin inclusion complex with effective antitumor activity. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00962-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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23
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Impregnation of poly(L-lactide-ran-δ-valerolactone) with essential bark oil using supercritical carbon dioxide. Sci Rep 2019; 9:16326. [PMID: 31705062 PMCID: PMC6841695 DOI: 10.1038/s41598-019-52910-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 10/25/2019] [Indexed: 12/02/2022] Open
Abstract
This work studied the incorporation of essential bark oil from Thujopsis dolabrata var. hondae, which is known to repel various insects, in poly(L-lactide-ran-δ-valerolactone) [poly(L-LA-ran-VL)] using supercritical carbon dioxide (scCO2). The poly(L-LA-ran-VL) was synthesized by first purifying the monomers by azeotropic distillation with benzene, followed by polymerization with Sn(oct)2 using the same equipment, representing an efficient one-pot process. The copolymerization of L-LA with VL using this technique at a feed ratio of 90/10 mol/mol gave poly(L-LA-ran-VL) (91/9) with a molecular weight of 6.48 × 104 g/mol and a high yield of 74.9%. Products with molecular weights over 5.0 × 104 g/mol were obtained at L-LA feed proportions of 70 to 90%. Impregnation trials were conducted between 40 and 120 °C at 14 MPa for 3 h. The oil content of a 73/27 specimen was found to increase significantly during processing at 100 or 120 °C. During enzymatic degradation with proteinase K, the 91/9 specimen showed the fastest degradation rate. Although the 71/29 sample was slowly hydrolyzed in a phosphate buffer at pH 7.0, the release of oil vapor from this material was slightly higher than that from the 91/9 specimen, and the vapor release rate continuously increased throughout the hydrolysis process.
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24
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Fontaine SD, Hann B, Reid R, Ashley GW, Santi DV. Species-specific optimization of PEG~SN-38 prodrug pharmacokinetics and antitumor effects in a triple-negative BRCA1-deficient xenograft. Cancer Chemother Pharmacol 2019; 84:729-738. [PMID: 31321449 DOI: 10.1007/s00280-019-03903-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 07/04/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Optimal efficacy of a macromolecular prodrug requires balancing the rate of drug release with the rate of prodrug elimination. Since circulating macromolecules have different elimination rates in different species, a prodrug optimal for one species will likely not be for another. The objectives of this work were (a) to develop an approach to optimize pharmacokinetics of a PEG~SN-38 prodrug in a particular species, (b) to use the approach to predict the pharmacokinetics of various prodrugs of SN-38 in the mouse and human, and (c) to develop a PEG~SN-38 conjugate that is optimized for mouse tumor models. METHODS We developed models that describe the pharmacokinetics of a drug released from a prodrug by the relationship between the rates of drug release and elimination of the prodrug. We tested the model by varying the release rate of SN-38 from PEG~SN-38 conjugates in the setting of a constant prodrug elimination rate in the mouse. Finally, we tested the antitumor efficacy of a PEG~SN-38 optimized for the mouse. RESULTS Optimization of a PEG~SN-38 prodrug was achieved by adjusting the rate of SN-38 release such that the ratio of t1/2,β of released SN-38 to the t1/2 of prodrug elimination was 0.2-0.8. Using this approach, we could rationalize the efficacy of previous PEGylated SN-38 prodrugs in the mouse and human. Finally, a mouse-optimized PEG~SN-38 showed remarkable antitumor activity in BRCA1-deficient MX-1 xenografts; a single dose gave tumor regression, suppression, and shrinkage of massive tumors. CONCLUSIONS The efficacy of a macromolecular prodrug can be optimized for a given species by balancing the rate of drug release from the carrier with the rate of prodrug elimination.
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Affiliation(s)
- Shaun D Fontaine
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, CA, 94158, USA
| | - Byron Hann
- University of California San Francisco, 1450 3rd Street, San Francisco, CA, 94158, USA
| | - Ralph Reid
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, CA, 94158, USA
| | - Gary W Ashley
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, CA, 94158, USA
| | - Daniel V Santi
- ProLynx, 455 Mission Bay Boulevard South, Suite 341, San Francisco, CA, 94158, USA.
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25
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In Vitro-In Vivo Correlation for the Degradation of Tetra-PEG Hydrogel Microspheres with Tunable β-Eliminative Crosslink Cleavage Rates. INT J POLYM SCI 2019. [DOI: 10.1155/2019/9483127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The degradation of Tetra-PEG hydrogels containing β-eliminative crosslinks has been studied in order to provide an in vitro-in vivo correlation for the use of these hydrogels in our chemically controlled drug delivery system. We measured time-dependent gel mass loss and ultrasound volume changes of 13 subcutaneously implanted Tetra-PEG hydrogel microspheres having degradation times ranging from ~3 to 250 days. Applying a previously developed model of Tetra-PEG hydrogel degradation, the mass changes correlate well with the in vitro rates of crosslink cleavage and hydrogel degelation. These results allow prediction of in vivo biodegradation properties of these hydrogels based on readily obtained in vitro rates, despite having degradation times that span 2 orders of magnitude. These results support the optimization of drug-releasing hydrogels and their development into long-acting therapeutics. The use of ultrasound volume measurements further provides a noninvasive technique for monitoring hydrogel degradation in the subcutaneous space.
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Shatz W, Aaronson J, Yohe S, Kelley RF, Kalia YN. Strategies for modifying drug residence time and ocular bioavailability to decrease treatment frequency for back of the eye diseases. Expert Opin Drug Deliv 2018; 16:43-57. [PMID: 30488721 DOI: 10.1080/17425247.2019.1553953] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Treating posterior eye diseases has become a major area of focus for pharmaceutical and biotechnology companies. Current standard of care for treating posterior eye diseases relies on administration via intravitreal injection. Although effective, this is not without complications and there is great incentive to develop longer-acting therapeutics and/or sustained release delivery systems. Here, we present an overview of emerging technologies for delivery of biologics to the back of the eye. AREAS COVERED Posterior eye diseases, intravitreal injection, age-related macular degeneration, anti-VEGF, ocular pharmacokinetics, novel technologies to extend half-life, in vivo models, translation to the clinic, and hurdles to effective patient care. EXPERT OPINION Posterior eye diseases are a worldwide public health issue. Although anti-VEGF molecules represent a major advance for treating diseases involving choroidal neovascularization, frequent injection can be burdensome for patients and clinicians. There is a need for effective and patient-friendly treatments for posterior eye diseases. Many technologies that enable long-acting delivery to the back of the eye are being evaluated. However, successful development of novel therapies and delivery technologies is hampered by a multitude of factors, including patient education, translatability of in vitro/in vivo preclinical data to the clinic, and regulatory challenges associated with novel technologies.
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Affiliation(s)
- Whitney Shatz
- a Department of Protein Chemistry , Genentech , South San Francisco , CA , USA.,b School of Pharmaceutical Sciences , University of Geneva & University of Lausanne , Geneva , Switzerland
| | - Jeffrey Aaronson
- c Department of Drug Delivery , Genentech , South San Francisco , CA , USA
| | - Stefan Yohe
- c Department of Drug Delivery , Genentech , South San Francisco , CA , USA
| | - Robert F Kelley
- c Department of Drug Delivery , Genentech , South San Francisco , CA , USA
| | - Yogeshvar N Kalia
- b School of Pharmaceutical Sciences , University of Geneva & University of Lausanne , Geneva , Switzerland
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Heher P, Ferguson J, Redl H, Slezak P. An overview of surgical sealant devices: current approaches and future trends. Expert Rev Med Devices 2018; 15:747-755. [DOI: 10.1080/17434440.2018.1526672] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Philipp Heher
- Austrian Cluster for Tissue Regeneration, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/AUVA Research Center, Vienna, Austria
| | - James Ferguson
- Austrian Cluster for Tissue Regeneration, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/AUVA Research Center, Vienna, Austria
| | - Heinz Redl
- Austrian Cluster for Tissue Regeneration, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/AUVA Research Center, Vienna, Austria
| | - Paul Slezak
- Austrian Cluster for Tissue Regeneration, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology/AUVA Research Center, Vienna, Austria
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29
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Xu J, Ren X, Gao G. Salt-inactive hydrophobic association hydrogels with fatigue resistant and self-healing properties. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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30
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Op 't Veld RC, van den Boomen OI, Lundvig DMS, Bronkhorst EM, Kouwer PHJ, Jansen JA, Middelkoop E, Von den Hoff JW, Rowan AE, Wagener FADTG. Thermosensitive biomimetic polyisocyanopeptide hydrogels may facilitate wound repair. Biomaterials 2018; 181:392-401. [PMID: 30103178 DOI: 10.1016/j.biomaterials.2018.07.038] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/20/2018] [Accepted: 07/25/2018] [Indexed: 02/06/2023]
Abstract
Changing wound dressings inflicts pain and may disrupt wound repair. Novel synthetic thermosensitive hydrogels based on polyisocyanopeptide (PIC) offer a solution. These gels are liquid below 16 °C and form gels beyond room temperature. The architecture and mechanical properties of PIC gels closely resemble collagen and fibrin, and include the characteristic stiffening response at high strains. Considering the reversible thermo-responsive behavior, we postulate that PIC gels are easy to apply and remove, and facilitate healing without eliciting foreign body responses or excessive inflammation. Biocompatibility may be higher in RGD-peptide-functionalized PIC gels due to enhanced cell binding capabilities. Full-thickness dorsal skin wounds in mice were compared to wounds treated with PIC gel and PIC-RGD gel for 3 and 7 days. No foreign body reactions and similar wound closure rates were found in all groups. The level of macrophages, myofibroblasts, epithelial migration, collagen expression, and blood vessels did not significantly differ from controls. Surprisingly, granulocyte populations in the wound decreased significantly in the PIC gel-treated groups, likely because foreign bacteria could not penetrate the gel. RGD-peptides did not further improve any effect observed for PIC. The absence of adverse effects, ease of application, and the possibilities for bio-functionalization make the biomimetic PIC hydrogels suitable for development into wound dressings.
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Affiliation(s)
- Roel C Op 't Veld
- Department of Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands; Department of Orthodontics and Craniofacial Biology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Onno I van den Boomen
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Ditte M S Lundvig
- Department of Orthodontics and Craniofacial Biology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Ewald M Bronkhorst
- Department of Cariology and Preventive Dentistry, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Paul H J Kouwer
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - John A Jansen
- Department of Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Esther Middelkoop
- Association of Dutch Burn Centres, Martini Hospital, Groningen, The Netherlands; Department of Plastic, Reconstructive and Hand Surgery, Amsterdam Movement Sciences, VU University Medical Centre, Amsterdam, The Netherlands
| | - Johannes W Von den Hoff
- Department of Orthodontics and Craniofacial Biology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands
| | - Alan E Rowan
- Department of Molecular Materials, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Frank A D T G Wagener
- Department of Orthodontics and Craniofacial Biology, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, The Netherlands.
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Preparation and Characterization of Hydrophobic-Associated Microspheres for Deep Profile Control in Offshore Oilfields. INT J POLYM SCI 2018. [DOI: 10.1155/2018/6362518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Microspheres have excellent sealing performances such as injectivity, bridging-off, deep migration, and deformation performances, but their plugging effects are limited by the fast swelling rate and poor viscoelasticity. In this study, we synthesized a novel modified microsphere with polymerizable surfactant monomers and cationic monomers. We investigated the influence factors on the swelling performance and rheological properties of the microspheres and explored the ways to improve the plugging performance of hydrophobic-associating microspheres. The association behaviors in aqueous media of poly(acrylamide-co-methacry loyloxyethyl trimethyl ammonium chloride-co-n-dodecyl poly(etheroxy acrylate) P(AM-DMC-DEA) are proven to be mediated by the DEA content. Moreover, the hydrophobic association interaction has a strong effect on the performance of microspheres such as swelling properties, the rheological performance, and plugging properties. The swelling properties of microsphere studies exhibited the slow swelling rate. The rheological performance measurements showed significant improvements; yield stress, and creep compliance increased rapidly from 404 to 2060 Pa and 3.89 × 10−4 to 1.41 × 10−2 1/Pa, respectively, with DEA content in microspheres rising from 0.0% to 0.22%. The plugging properties of microspheres were enhanced by the slow swelling performance and good viscoelasticity.
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Anwary M, Kumar P, du Toit LC, Choonara YE, Pillay V. Polymeric, injectable, intravitreal hydrogel devices for posterior segment applications and interventions. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:1074-1081. [DOI: 10.1080/21691401.2018.1478845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Muhammed Anwary
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Lisa C. du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics 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, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, School of Therapeutics Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Xu Z, Bratlie KM. Click Chemistry and Material Selection for in Situ Fabrication of Hydrogels in Tissue Engineering Applications. ACS Biomater Sci Eng 2018; 4:2276-2291. [DOI: 10.1021/acsbiomaterials.8b00230] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zihao Xu
- Department of Materials Science & Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Kaitlin M. Bratlie
- Department of Materials Science & Engineering, Iowa State University, Ames, Iowa 50011, United States
- Department of Chemical & Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Division of Materials Science & Engineering, Ames National Laboratory, Ames, Iowa 50011, United States
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Hou P, Zhang N, Wu R, Xu W, Hou Z. Photo-cross-linked biodegradable hydrogels based on n-arm-poly(ethylene glycol), poly(ε-caprolactone) and/or methacrylic acid for controlled drug release. J Biomater Appl 2017; 32:511-523. [PMID: 28899224 DOI: 10.1177/0885328217730465] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this paper, a novel kind of photo-cross-linked biodegradable hydrogels based on n-arm-poly(ethylene glycol) ( n = 2, 3, and 4) and poly(ɛ-caprolactone) was prepared by ultraviolet-initiated free radical polymerization. The resulting n-arm-poly(ethylene glycol)-poly(ɛ-caprolactone) and n-arm-poly(ethylene glycol)-poly(ɛ-caprolactone) acrylate (n-arm-PEG-PCL-AC, macromer) were characterized by proton nuclear magnetic resonance and fourier transform infrared spectra. The influences of arm numbers and concentration of macromer on the properties of hydrogel were researched systematically, and the results showed that the gelation time, equilibrium swelling ratio, in vitro degradation, and drug release rate decreased with the increase of arm numbers and concentration of macromer. The degradation and drug release rate could be controlled by varying the cross-linking density of hydrogel, indicating a potential application as controlled drug delivery system. Cytotoxicity test of hydrogel extracts was conducted using L929 mouse fibroblasts, and the relative growth rate exceeded 75% (cytotoxicity type: class 1) after incubation for 24 h, showing excellent cytocompatibility. In addition, the paper presented a pH-sensitive hydrogel (G4pH) based on 4-arm-PEG-PCL-AC and acrylic acid, and the influences of pH value on swelling behaviors and in vitro drug release of the pH-sensitive hydrogel were examined. The hydrogels shrank under acidic condition and would swell in neutral or basic medium. The pH-dependent drug release behaviors indicated a promising application of the materials as oral drug delivery vehicles.
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Affiliation(s)
- Ping Hou
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
| | - Na Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
| | - Ruxia Wu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
| | - Weiwei Xu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
| | - Zhaosheng Hou
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
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35
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Mora NL, Gao Y, Gutierrez MG, Peruzzi J, Bakker I, Peters RJRW, Siewert B, Bonnet S, Kieltyka RE, van Hest JCM, Malmstadt N, Kros A. Evaluation of dextran(ethylene glycol) hydrogel films for giant unilamellar lipid vesicle production and their application for the encapsulation of polymersomes. SOFT MATTER 2017; 13:5580-5588. [PMID: 28730206 PMCID: PMC5586486 DOI: 10.1039/c7sm00551b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Giant Unilamellar Vesicles (GUVs) prepared from phospholipids are becoming popular membrane model systems for use in biophysical studies. The quality, size and yield of GUVs depend on the preparation method used to obtain them. In this study, hydrogels consisting of dextran polymers crosslinked by poly(ethylene glycol) (DexPEG) were used as hydrophilic frameworks for the preparation of vesicle suspensions under physiological ionic strength conditions. A comparative study was conducted using hydrogels with varied physicochemical properties to evaluate their performance for GUV production. The prepared GUVs were quantified by flow cytometry using the Coulter Principle to determine the yield and size distribution. We find that hydrogels of lower mechanical strength, increased swellability and decreased lipid interaction favour GUV production, while their resulting size is determined by the surface roughness of the hydrogel film. Moreover, we embedded polymersomes into the crosslinked hydrogel network, creating a DexPEG - polymersome hybrid film. The re-hydration of lipids on those hybrid substrates led to the production of GUVs and the efficient encapsulation of polymersomes in the lumen of GUVs.
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Affiliation(s)
- Nestor Lopez Mora
- Leiden Institute of Chemistry, Leiden University, Supramolecular & Biomaterials Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
| | - Yue Gao
- Leiden Institute of Chemistry, Leiden University, Supramolecular & Biomaterials Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
| | - M Gertrude Gutierrez
- Departments of Chemical Engineering & Materials Science, Biomedical Engineering, and Chemistry, University of Southern California, 925 Bloom Walk, 90089, Los Angeles, CA, USA
| | - Justin Peruzzi
- Department of Chemical Engineering, University of Virginia, 102 Engineer's Way, 400741, Charlottesville, VA, USA
| | - Ivan Bakker
- Leiden Institute of Chemistry, Leiden University, Supramolecular & Biomaterials Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
| | - Ruud J R W Peters
- Radboud University Nijmegen, Department of Organic Chemistry, Heyendaalseweg 135 6525 AJ, Nijmegen, The Netherlands
| | - Bianka Siewert
- Leiden Institute of Chemistry, Leiden University, Metals in Catalysis, Biomimetics & Inorganic Materials, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Sylvestre Bonnet
- Leiden Institute of Chemistry, Leiden University, Metals in Catalysis, Biomimetics & Inorganic Materials, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Roxanne E Kieltyka
- Leiden Institute of Chemistry, Leiden University, Supramolecular & Biomaterials Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
| | - Jan C M van Hest
- Radboud University Nijmegen, Department of Organic Chemistry, Heyendaalseweg 135 6525 AJ, Nijmegen, The Netherlands
| | - Noah Malmstadt
- Departments of Chemical Engineering & Materials Science, Biomedical Engineering, and Chemistry, University of Southern California, 925 Bloom Walk, 90089, Los Angeles, CA, USA
| | - Alexander Kros
- Leiden Institute of Chemistry, Leiden University, Supramolecular & Biomaterials Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
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36
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Qiao X, Peng X, Qiao J, Jiang Z, Han B, Yang C, Liu W. Evaluation of a photocrosslinkable hydroxyethyl chitosan hydrogel as a potential drug release system for glaucoma surgery. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:149. [PMID: 28831622 DOI: 10.1007/s10856-017-5954-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
Hydroxyethyl chitosan (HECTS) is a critical derivative of chitosan that has been widely used as biomedical materials due to great water-solubility and excellent biocompatibility. Here, photosensitive hydroxyethyl chitosan was synthesized by introducing azide group on NH2 of HECTS (HECTS-AZ), afterwards FTIR and 1H NMR spectra were detected to confirm the formation of HECTS-AZ. The solution of HECTS-AZ can achieve a sol-gel transition through UV irradiation for 30 s. The evaluation of biocompability and biodegradability in vivo was conducted in rats, visual and pathological examinations exhibited the HECTS-AZ has excellent biocompability and degradation time of the hydrogel is more than 14 weeks. Furthermore, HECTS-AZ hydrogel as an ocular drug delivery system loading heparin was prepared to implant under sclera of rabbit after glaucoma filtration surgery (GFS). The experimental results demonstrated the heparin loaded hydrogel can effectively maintain filtration bleb and lowing intraocular pressure (IOP) after GFS for prolonged time. Besides, obvious inflammatory reactions and side effects have not been observed in ocular during the experimental period. In conclusion, the HECTS-AZ hydrogel is a potential drug delivery device for the treatment of glaucoma and other ocular diseases.
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Affiliation(s)
- Xuesong Qiao
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Xiaoting Peng
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Jing Qiao
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Zhiwen Jiang
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
| | - Baoqin Han
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China.
| | - Chaozhong Yang
- Affiliated Hospital of Heze Medical College, Heze, Shandong, PR China
| | - Wanshun Liu
- College of Marine Life Sciences, Ocean University of China, Shandong, Qingdao, PR China
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37
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Schneider EL, Hearn BR, Pfaff SJ, Reid R, Parkes DG, Vrang N, Ashley GW, Santi DV. A Hydrogel-Microsphere Drug Delivery System That Supports Once-Monthly Administration of a GLP-1 Receptor Agonist. ACS Chem Biol 2017; 12:2107-2116. [PMID: 28605180 DOI: 10.1021/acschembio.7b00218] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We have developed a chemically controlled very long-acting delivery system to support once-monthly administration of a peptidic GLP-1R agonist. Initially, the prototypical GLP-1R agonist exenatide was covalently attached to hydrogel microspheres by a self-cleaving β-eliminative linker; after subcutaneous injection in rats, the peptide was slowly released into the systemic circulation. However, the short serum exenatide half-life suggested its degradation in the subcutaneous depot. We found that exenatide undergoes deamidation at Asn28 with an in vitro and in vivo half-life of approximately 2 weeks. The [Gln28]exenatide variant and exenatide showed indistinguishable GLP-1R agonist activities as well as pharmacokinetic and pharmacodynamic effects in rodents; however, unlike exenatide, [Gln28]exenatide is stable for long periods. Two different hydrogel-[Gln28]exenatide conjugates were prepared using β-eliminative linkers with different cleavage rates. After subcutaneous injection in rodents, the serum half-lives for the released [Gln28]exenatide from the two conjugates were about 2 weeks and one month. Two monthly injections of the latter in the Zucker diabetic fatty rat showed pharmacodynamic effects indistinguishable from two months of continuously infused exenatide. Pharmacokinetic simulations indicate that the delivery system should serve well as a once-monthly GLP-1R agonist for treatment of type 2 diabetes in humans.
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Affiliation(s)
- Eric L. Schneider
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
| | - Brian R. Hearn
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
| | - Samuel J. Pfaff
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
| | - Ralph Reid
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
| | - David G. Parkes
- DGP Scientific Inc., Del Mar, California 92014, United States
| | - Niels Vrang
- Gubra ApS, Horsholm Kongevej
11B, 2970 Horsholm, Denmark
| | - Gary W. Ashley
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
| | - Daniel V. Santi
- ProLynx, 455 Mission Bay Blvd. South, Suite
145, San Francisco, California 94158, United States
- Department
of Pharmaceutical Chemistry, University of California, San Francisco, 600 16th Street, San Francisco, California 94158, United States
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38
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Henninot A, Collins JC, Nuss JM. The Current State of Peptide Drug Discovery: Back to the Future? J Med Chem 2017; 61:1382-1414. [PMID: 28737935 DOI: 10.1021/acs.jmedchem.7b00318] [Citation(s) in RCA: 645] [Impact Index Per Article: 92.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Over the past decade, peptide drug discovery has experienced a revival of interest and scientific momentum, as the pharmaceutical industry has come to appreciate the role that peptide therapeutics can play in addressing unmet medical needs and how this class of compounds can be an excellent complement or even preferable alternative to small molecule and biological therapeutics. In this Perspective, we give a concise description of the recent progress in peptide drug discovery in a holistic manner, highlighting enabling technological advances affecting nearly every aspect of this field: from lead discovery, to synthesis and optimization, to peptide drug delivery. An emphasis is placed on describing research efforts to overcome the inherent weaknesses of peptide drugs, in particular their poor pharmacokinetic properties, and how these efforts have been critical to the discovery, design, and subsequent development of novel therapeutics.
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Affiliation(s)
- Antoine Henninot
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
| | - James C Collins
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
| | - John M Nuss
- Ferring Research Institute , 4245 Sorrento Valley Boulevard, San Diego, California 92121, United States
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39
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Gong C, Shan M, Li B, Wu G. Injectable dual redox responsive diselenide-containing poly(ethylene glycol) hydrogel. J Biomed Mater Res A 2017; 105:2451-2460. [DOI: 10.1002/jbm.a.36103] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/24/2017] [Accepted: 05/02/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Chu Gong
- Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry, College of Chemistry, Nankai University; Tianjin 300071 People's Republic of China
| | - Meng Shan
- Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry, College of Chemistry, Nankai University; Tianjin 300071 People's Republic of China
| | - Bingqiang Li
- Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry, College of Chemistry, Nankai University; Tianjin 300071 People's Republic of China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry, College of Chemistry, Nankai University; Tianjin 300071 People's Republic of China
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40
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Shu C, Sabi-mouka EMB, Wang X, Ding L. Self-assembly hydrogels as multifunctional drug delivery of paclitaxel for synergistic tumour-targeting and biocompatibility in vitro and in vivo. J Pharm Pharmacol 2017; 69:967-977. [DOI: 10.1111/jphp.12732] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 03/26/2017] [Indexed: 12/27/2022]
Abstract
Abstract
Objectives
In this work, we designed the self-assembly peptide hydrogels to multiply therapeutic agents for improving anticancer effect and lowering adverse reaction of paclitaxel (PTX).
Methods
The folate (FA)-peptide-PTX hydrogels consist of self-assemble peptide hydrogel as nanoscale carrier, FA and RGD peptide as targeting moieties and paclitaxel as anticancer drug. The properties of hydrogels, such as morphology, size distribution, zeta potential and rheology, were investigated. Targeted specificity, biodistribution and anticancer effect were studied both in vitro and in vivo.
Key findings
Folate-peptide-PTX hydrogel nanoparticles were spherical in shape with hydrodynamic diameter of approximately 137.3 ± 15.2 nm. The hydrogels could only target monolayer cancer cells but also penetrated the nuclei of cells in vitro. The in-vivo real-time imaging further demonstrated that the hydrogels preferentially accumulated in tumour and sustained release. Compared to free paclitaxel, the FA-peptide-PTX hydrogels had higher anticancer effect and lower side effect.
Conclusions
The dual-targeted drug delivery possessed strong capability of synergistic targeted delivery, long-term drug release and better biocompatibility than paclitaxel both in vitro and in vivo. The results obtained demonstrated a high potential of the proposed drug delivery system in improving the therapeutic efficacy of paclitaxel.
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Affiliation(s)
- Chang Shu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
| | - Eboka M B Sabi-mouka
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
| | - Xiaoliang Wang
- Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science and Engineering, Nanjing University, Nanjing, China
| | - Li Ding
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
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41
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Probing the luminal microenvironment of reconstituted epithelial microtissues. Sci Rep 2016; 6:33148. [PMID: 27619235 PMCID: PMC5020616 DOI: 10.1038/srep33148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 08/22/2016] [Indexed: 12/24/2022] Open
Abstract
Polymeric microparticles can serve as carriers or sensors to instruct or characterize tissue biology. However, incorporating microparticles into tissues for in vitro assays remains a challenge. We exploit three-dimensional cell-patterning technologies and directed epithelial self-organization to deliver microparticles to the lumen of reconstituted human intestinal microtissues. We also develop a novel pH-sensitive microsensor that can measure the luminal pH of reconstituted epithelial microtissues. These studies offer a novel approach for investigating luminal microenvironments and drug-delivery across epithelial barriers.
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42
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Schneider EL, Henise J, Reid R, Ashley GW, Santi DV. Subcutaneously Administered Self-Cleaving Hydrogel–Octreotide Conjugates Provide Very Long-Acting Octreotide. Bioconjug Chem 2016; 27:1638-44. [DOI: 10.1021/acs.bioconjchem.6b00188] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eric L. Schneider
- ProLynx, 455 Mission Bay Boulevard South,
Suite 145, San Francisco, California 94158, United States
| | - Jeff Henise
- ProLynx, 455 Mission Bay Boulevard South,
Suite 145, San Francisco, California 94158, United States
| | - Ralph Reid
- ProLynx, 455 Mission Bay Boulevard South,
Suite 145, San Francisco, California 94158, United States
| | - Gary W. Ashley
- ProLynx, 455 Mission Bay Boulevard South,
Suite 145, San Francisco, California 94158, United States
| | - Daniel V. Santi
- ProLynx, 455 Mission Bay Boulevard South,
Suite 145, San Francisco, California 94158, United States
- Department
of Pharmaceutical Chemistry, University of California, San Francisco, 600 16th Street, San Francisco, California 94158, United States
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43
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Henise J, Hearn BR, Santi DV, Kamata H, Sakai T, Ashley GW. Surgical sealants with tunable swelling, burst pressures, and biodegradation rates. J Biomed Mater Res B Appl Biomater 2016; 105:1602-1611. [PMID: 27149244 DOI: 10.1002/jbm.b.33701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 04/06/2016] [Accepted: 04/14/2016] [Indexed: 11/07/2022]
Abstract
We developed two types of polyethylene glycol (PEG)-based surgical sealants, which we have termed the PER and PRO series. In one, the PRO series, an 8-arm PEG containing activated carbonyl end-groups was reacted with a 4-armed amino-PEG. In the second, the PER series, a 4-arm PEG containing bi-functional end groups with four azides and four activated esters was reacted by strain-promoted alkyne-azide cycloaddition with a 4-arm cyclooctyne-PEG to give a near-ideal Tetra-PEG hydrogel. The sealants showed predictably tunable strength, swelling, adhesion, and gelation properties. The gels were compared to commercially available PEG-based sealants and exhibit physical properties equivalent to or better than the standards. Variants of each gel-format were prepared that contained a β-eliminative cleavable linker in the crosslinks to control degradation rate. Linkers of this type self-cleave with half-lives spanning from hours to years, and offer the unique ability to precisely tune the degradation to match the healing process. In addition, these linkers could serve as cleavable tethers for controlled drug release. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1602-1611, 2017.
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Affiliation(s)
- Jeff Henise
- ProLynx, 455 Mission Bay Blvd. South, Suite 145, San Francisco, California, 94158
| | - Brian R Hearn
- ProLynx, 455 Mission Bay Blvd. South, Suite 145, San Francisco, California, 94158
| | - Daniel V Santi
- ProLynx, 455 Mission Bay Blvd. South, Suite 145, San Francisco, California, 94158
| | - Hiroyuki Kamata
- Department of Bioengineering, Graduate School of Engineering, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Takamasa Sakai
- Department of Bioengineering, Graduate School of Engineering, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Gary W Ashley
- ProLynx, 455 Mission Bay Blvd. South, Suite 145, San Francisco, California, 94158
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44
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Schneider EL, Henise J, Reid R, Ashley GW, Santi DV. Hydrogel Drug Delivery System Using Self-Cleaving Covalent Linkers for Once-a-Week Administration of Exenatide. Bioconjug Chem 2016; 27:1210-5. [DOI: 10.1021/acs.bioconjchem.5b00690] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eric L. Schneider
- ProLynx, 455 Mission Bay Boulevard South, Suite 145, San Francisco, California 94158, United States
| | - Jeff Henise
- ProLynx, 455 Mission Bay Boulevard South, Suite 145, San Francisco, California 94158, United States
| | - Ralph Reid
- ProLynx, 455 Mission Bay Boulevard South, Suite 145, San Francisco, California 94158, United States
| | - Gary W. Ashley
- ProLynx, 455 Mission Bay Boulevard South, Suite 145, San Francisco, California 94158, United States
| | - Daniel V. Santi
- ProLynx, 455 Mission Bay Boulevard South, Suite 145, San Francisco, California 94158, United States
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45
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Reid R, Sgobba M, Raveh B, Rastelli G, Sali A, Santi DV. Analytical and Simulation-Based Models for Drug Release and Gel-Degradation in a Tetra-PEG Hydrogel Drug-Delivery System. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01598] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ralph Reid
- ProLynx, San Francisco, California 94158, United States
| | - Miriam Sgobba
- Department
of Bioengineering and Therapeutic Sciences, Department of Pharmaceutical
Chemistry, and California Institute for Quantitative Biosciences (QB3), University of California, San Francisco, San Francisco, California 94143, United States
- Dipartimento
di Scienze della Vita, Università di Modena e Reggio, 41121 Emilia, Italy
| | - Barak Raveh
- Department
of Bioengineering and Therapeutic Sciences, Department of Pharmaceutical
Chemistry, and California Institute for Quantitative Biosciences (QB3), University of California, San Francisco, San Francisco, California 94143, United States
| | - Giulio Rastelli
- Dipartimento
di Scienze della Vita, Università di Modena e Reggio, 41121 Emilia, Italy
| | - Andrej Sali
- Department
of Bioengineering and Therapeutic Sciences, Department of Pharmaceutical
Chemistry, and California Institute for Quantitative Biosciences (QB3), University of California, San Francisco, San Francisco, California 94143, United States
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