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Du R, Fielding LA. pH-Responsive Nanogels Generated by Polymerization-Induced Self-Assembly of a Succinate-Functional Monomer. Macromolecules 2024; 57:3496-3501. [PMID: 38681060 PMCID: PMC11044572 DOI: 10.1021/acs.macromol.4c00427] [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: 02/22/2024] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 05/01/2024]
Abstract
Colloidal nanogels formed from a pH-responsive poly(succinate)-functional core and a poly(sulfonate)-functional corona were prepared via a previously unreported reversible addition-fragmentation chain-transfer (RAFT)-mediated aqueous emulsion polymerization-induced self-assembly (PISA) route. Specifically, a poly(potassium 3-sulfopropyl methacrylate) (PKSPMA50) macromolecular chain-transfer agent (macro-CTA) was synthesized via RAFT solution polymerization followed by chain-extension with a hydrophobic, carboxylic acid-functional, 2-(methacryloyloxy) ethyl succinate (MES) monomer at pH 2. Colloidal nanoparticles with tunable diameters between 66 to 150 nm, depending on the core composition, and narrow particle size distributions were obtained at 20% w/w solids. Well-defined pH-responsive nanogels that swell on increasing the pH could be prepared even without the addition of a cross-linking comonomer, and introducing an additional cross-linker to the core led to smaller nanogels with lower swelling ratios. These nanogels could reversibly change in size on cycling the pH between acidic and basic conditions and remain colloidally stable over a wide pH range and at 70 °C.
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Affiliation(s)
- Ruiling Du
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Lee A. Fielding
- Department
of Materials, School of Natural Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- Henry
Royce Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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Latham AP, Levy ES, Sellers BD, Leung DH. Utilizing Molecular Simulations to Examine Nanosuspension Stability. Pharmaceutics 2023; 16:50. [PMID: 38258061 PMCID: PMC11154398 DOI: 10.3390/pharmaceutics16010050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Drug nanosuspensions offer a promising approach to improve bioavailability for poorly soluble drug candidates. Such formulations often necessitate the inclusion of an excipient to stabilize the drug nanoparticles. However, the rationale for the choice of the correct excipient for a given drug candidate remains unclear. To gain molecular insight into formulation design, this work first utilizes a molecular dynamics simulation to computationally investigate drug-excipient interactions for a number of combinations that have been previously studied experimentally. We find that hydrophobic interactions drive excipient adsorption to drug nanoparticles and that the fraction of polar surface area serves as a predictor for experimental measurements of nanosuspension stability. To test these ideas prospectively, we applied our model to an uncharacterized drug compound, GDC-0810. Our simulations predicted that a salt form of GDC-0810 would lead to more stable nanosuspensions than the neutral form; therefore, we tested the stability of salt GDC-0810 nanosuspensions and found that the salt form readily formed nanosuspensions even without the excipient. To avoid computationally expensive simulations in the future, we extended our model by showing that simple, two-dimensional properties of single drug molecules can be used to rationalize nanosuspension designs without simulations. In all, our work demonstrates how computational tools can provide molecular insight into drug-excipient interactions and aid in rational formulation design.
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Affiliation(s)
- Andrew P. Latham
- Small Molecule Pharmaceutical Sciences, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;
| | - Elizabeth S. Levy
- Small Molecule Pharmaceutical Sciences, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;
| | - Benjamin D. Sellers
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;
| | - Dennis H. Leung
- Small Molecule Pharmaceutical Sciences, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;
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Dogan AB, Rohner NA, Smith JNP, Kilgore JA, Williams NS, Markowitz SD, von Recum HA, Desai AB. Polymer Microparticles Prolong Delivery of the 15-PGDH Inhibitor SW033291. Pharmaceutics 2021; 14:85. [PMID: 35056981 PMCID: PMC8779392 DOI: 10.3390/pharmaceutics14010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/06/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022] Open
Abstract
As the prevalence of age-related fibrotic diseases continues to increase, novel antifibrotic therapies are emerging to address clinical needs. However, many novel therapeutics for managing chronic fibrosis are small-molecule drugs that require frequent dosing to attain effective concentrations. Although bolus parenteral administrations have become standard clinical practice, an extended delivery platform would achieve steady-state concentrations over a longer time period with fewer administrations. This study lays the foundation for the development of a sustained release platform for the delivery of (+)SW033291, a potent, small-molecule inhibitor of the 15-hydroxyprostaglandin dehydrogenase (15-PGDH) enzyme, which has previously demonstrated efficacy in a murine model of pulmonary fibrosis. Herein, we leverage fine-tuned cyclodextrin microparticles-specifically, β-CD microparticles (β-CD MPs)-to extend the delivery of the 15-PGDH inhibitor, (+)SW033291, to over one week.
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Affiliation(s)
- Alan B. Dogan
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; (A.B.D.); (N.A.R.); (H.A.v.R.)
| | - Nathan A. Rohner
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; (A.B.D.); (N.A.R.); (H.A.v.R.)
| | - Julianne N. P. Smith
- Department of Medicine and Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA; (J.N.P.S.); (S.D.M.)
| | - Jessica A. Kilgore
- Department of Biochemistry, UT Southwestern Medical Center, Dallas, TX 75390, USA; (J.A.K.); (N.S.W.)
| | - Noelle S. Williams
- Department of Biochemistry, UT Southwestern Medical Center, Dallas, TX 75390, USA; (J.A.K.); (N.S.W.)
| | - Sanford D. Markowitz
- Department of Medicine and Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA; (J.N.P.S.); (S.D.M.)
- University Hospitals Seidman Cancer Center, Cleveland, OH 44106, USA
| | - Horst A. von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; (A.B.D.); (N.A.R.); (H.A.v.R.)
| | - Amar B. Desai
- Department of Medicine and Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA; (J.N.P.S.); (S.D.M.)
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Polo Fonseca L, Felisberti MI. Thermo- and UV-responsive amphiphilic nanogels via reversible [4+4] photocycloaddition of PEG/PCL-based polyurethane dispersions. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Behnke M, Vollrath A, Klepsch L, Beringer-Siemers B, Stumpf S, A. Czaplewska J, Hoeppener S, Werz O, S. Schubert U. Optimized Encapsulation of the FLAP/PGES-1 Inhibitor BRP-187 in PVA-Stabilized PLGA Nanoparticles Using Microfluidics. Polymers (Basel) 2020; 12:E2751. [PMID: 33233853 PMCID: PMC7699897 DOI: 10.3390/polym12112751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022] Open
Abstract
The dual inhibitor of the 5-lipoxygenase-activating protein (FLAP) and the microsomal prostaglandin E2 synthase-1 (mPGES-1), named BRP-187, represents a promising drug candidate due to its improved anti-inflammatory efficacy along with potentially reduced side effects in comparison to non-steroidal anti-inflammatory drugs (NSAIDs). However, BRP-187 is an acidic lipophilic drug and reveals only poor water solubility along with a strong tendency for plasma protein binding. Therefore, encapsulation in polymeric nanoparticles is a promising approach to enable its therapeutic use. With the aim to optimize the encapsulation of BRP-187 into poly(lactic-co-glycolic acid) (PLGA) nanoparticles, a single-phase herringbone microfluidic mixer was used for the particle preparation. Various formulation parameters, such as total flow rates, flow rate ratio, the concentration of the poly(vinyl alcohol) (PVA) as a surfactant, initial polymer concentration, as well as presence of a co-solvent on the final particle size distribution and drug loading, were screened for best particle characteristics and highest drug loading capacities. While the size of the particles remained in the targeted region between 121 and 259 nm with low polydispersities (0.05 to 0.2), large differences were found in the BRP-187 loading capacities (LC = 0.5 to 7.29%) and drug crystal formation during the various formulations.
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Affiliation(s)
- Mira Behnke
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
| | - Antje Vollrath
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
| | - Lea Klepsch
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
| | - Baerbel Beringer-Siemers
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
| | - Steffi Stumpf
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
| | - Justyna A. Czaplewska
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
| | - Oliver Werz
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany; (M.B.); (A.V.); (L.K.); (B.B.-S.); (S.S.); (J.A.C.); (S.H.)
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany;
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Shadrack DM, Swai HS. Solvent effects on molecular encapsulation of Toussantine-A by chitosan nanoparticle: A metadynamics study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Shamsi M, Mohammadi A, Manshadi MK, Sanati-Nezhad A. Mathematical and computational modeling of nano-engineered drug delivery systems. J Control Release 2019; 307:150-165. [DOI: 10.1016/j.jconrel.2019.06.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/10/2019] [Accepted: 06/12/2019] [Indexed: 12/20/2022]
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