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Curcumin loaded polymeric micelles of variable hydrophobic lengths by RAFT polymerization: Preparation and in-vitro characterization. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101793] [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]
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2
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Cingolani A, Casalini T, Caimi S, Klaue A, Sponchioni M, Rossi F, Perale G. A Methodologic Approach for the Selection of Bio-Resorbable Polymers in the Development of Medical Devices: The Case of Poly(l-lactide- co-ε-caprolactone). Polymers (Basel) 2018; 10:E851. [PMID: 30960776 PMCID: PMC6403915 DOI: 10.3390/polym10080851] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 07/23/2018] [Accepted: 07/31/2018] [Indexed: 11/16/2022] Open
Abstract
In the last decades bioresorbable and biodegradable polymers have gained a very good reputation both in research and in industry thanks to their unique characteristics. They are able to ensure high performance and biocompatibility, at the same time avoiding post-healing surgical interventions for device removal. In the medical device industry, it is widely known that product formulation and manufacturing need to follow specific procedures in order to ensure both the proper mechanical properties and desired degradation profile. Moreover, the sterilization method is crucial and its impact on physical properties is generally underestimated. In this work we focused our attention on the effect of different terminal sterilization methods on two commercially available poly(l-lactide-co-ε-caprolactone) with equivalent chemical composition (70% PLA and 30% PCL) and relatively similar initial molecular weights, but different chain arrangements and crystallinity. Results obtained show that crystallinity plays a key role in helping preserve the narrow distribution of chains and, as a consequence, defined physical properties. These statements can be used as guidelines for a better choice of the most adequate biodegradable polymers in the production of resorbable medical devices.
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Affiliation(s)
- Alberto Cingolani
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Bioscience ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland.
- Industrie Biomediche Insubri SA (IBI), Via Cantonale 67, 6805 Mezzovico-Vira, Switzerland.
| | - Tommaso Casalini
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Bioscience ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland.
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, Via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
| | - Stefano Caimi
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Bioscience ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland.
| | - Antoine Klaue
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Bioscience ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland.
| | - Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20100 Milan, Italy.
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20100 Milan, Italy.
| | - Giuseppe Perale
- Industrie Biomediche Insubri SA (IBI), Via Cantonale 67, 6805 Mezzovico-Vira, Switzerland.
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, Via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
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Gatti S, Agostini A, Palmiero UC, Colombo C, Peviani M, Biffi A, Moscatelli D. Hydrazone linked doxorubicin-PLA prodrug nanoparticles with high drug loading. NANOTECHNOLOGY 2018; 29:305602. [PMID: 29701613 DOI: 10.1088/1361-6528/aac0d3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An optimal drug delivery system should be characterized by biocompatibility, biodegradability, high drug loading and favorable drug release profile. To achieve this goal a hydrazone linked doxorubicin-poly(lactic acid) prodrug (PLA-DOX) was synthesized by the functionalization of a short polymer chain produced by ring opening polymerization. The hydrophobic prodrug generated in this way was nanoprecipitated using a block copolymer to form polymeric nanoparticles (NPs) with a quantitative loading efficiency and a high and tunable drug loading. The effects of the concentration of the PLA-DOX prodrug and surfactant were studied by dynamic light scattering showing a range of NP size between 50 and 90 nm and monodispersed size distributions with polydispersity indexes lower then 0.27 up to a maximum DOX concentration of 27% w/w. The release profile of DOX from these NPs, tested at different pH conditions, showed a higher release rate in acidic conditions, consistent with the nature of the hydrazone bond which was used to conjugate the drug to the polymer. In vitro cytotoxicity studies performed on BV2 microglia-like cell line highlighted a specific cytotoxic effect of these NPs suggesting the maintenance of the drug efficacy and a modified release profile upon encapsulation of DOX in the NPs.
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Affiliation(s)
- Simone Gatti
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico Di Milano, I-20131, Milan, Italy
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Capasso Palmiero U, Morosi L, Bello E, Ponzo M, Frapolli R, Matteo C, Ferrari M, Zucchetti M, Minoli L, De Maglie M, Romanelli P, Morbidelli M, D'Incalci M, Moscatelli D. Readily prepared biodegradable nanoparticles to formulate poorly water soluble drugs improving their pharmacological properties: The example of trabectedin. J Control Release 2018. [DOI: 10.1016/j.jconrel.2018.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Ferrari R, Agostini A, Brunel L, Morosi L, Moscatelli D. Self-assembling amphiphilic block copolymer from renewable δ-decalactone and δ-dodecalactone. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28764] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Raffaele Ferrari
- Department of Chemistry and Applied Biosciences; Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1; Zurich 8093 Switzerland
| | - Azzurra Agostini
- Department of Chemistry, Materials and Chemical Engineering; Politecnico di Milano, Via Mancinelli 7; Milano 20131 Italy
| | - Lucia Brunel
- Department of Chemical and Biological Engineering; Northwestern University, 2145 Sheridan Road; Evanston Illinois 60208
| | - Lavinia Morosi
- IRCSS - Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19; Milano 20156 Italy
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering; Politecnico di Milano, Via Mancinelli 7; Milano 20131 Italy
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6
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Synthesis and Nanoprecipitation of HEMA-CL n Based Polymers for the Production of Biodegradable Nanoparticles. Polymers (Basel) 2017; 9:polym9090389. [PMID: 30965689 PMCID: PMC6418799 DOI: 10.3390/polym9090389] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 08/10/2017] [Accepted: 08/21/2017] [Indexed: 11/17/2022] Open
Abstract
The control over the size distribution and stability of polymeric nanoparticles (NPs) is crucial in many of their applications, especially in the biomedical field. These characteristics are typically influenced by the production method and the nature of the starting material. To investigate these aspects, the controlled radical polymerization of functionalized methacrylates constituted by 2-hydroxyethyl methacrylate (HEMA) functionalized with a controlled number of ε-caprolactone (CL) units (HEMA-CLn), was carried out via reversible addition–fragmentation chain transfer polymerization (RAFT) in solution. The living reaction allows for good control over the molar mass of the final polymer with a low molar mass dispersity. The obtained polymer solutions were nanoprecipitated in order to produce NPs suitable for drug delivery applications with narrow particle size distribution and a wide size range (from 60 to 250 nm). The NP synthesis has been performed using a mixing device, in order to control the parameters involved in the nanoprecipitation process. As already seen for similar systems, the size of the produced NPs is a function of the polymer concentration during the nanoprecipitation process. Nevertheless, when the polymer concentration is kept constant, the NP size is influenced by the chemical structure of the polymer used, in terms of the presence of PEG (poly(ethylene glycol)), the degree of RAFT polymerization, and the length of the caprolactone side chain. These characteristics were also found to influence the stability and degradation properties of the produced NPs.
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Jackson MA, Werfel TA, Curvino EJ, Yu F, Kavanaugh TE, Sarett SM, Dockery MD, Kilchrist KV, Jackson AN, Giorgio TD, Duvall CL. Zwitterionic Nanocarrier Surface Chemistry Improves siRNA Tumor Delivery and Silencing Activity Relative to Polyethylene Glycol. ACS NANO 2017; 11:5680-5696. [PMID: 28548843 PMCID: PMC5919184 DOI: 10.1021/acsnano.7b01110] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Although siRNA-based nanomedicines hold promise for cancer treatment, conventional siRNA-polymer complex (polyplex) nanocarrier systems have poor pharmacokinetics following intravenous delivery, hindering tumor accumulation. Here, we determined the impact of surface chemistry on the in vivo pharmacokinetics and tumor delivery of siRNA polyplexes. A library of diblock polymers was synthesized, all containing the same pH-responsive, endosomolytic polyplex core-forming block but different corona blocks: 5 kDa (benchmark) and 20 kDa linear polyethylene glycol (PEG), 10 kDa and 20 kDa brush-like poly(oligo ethylene glycol), and 10 kDa and 20 kDa zwitterionic phosphorylcholine-based polymers (PMPC). In vitro, it was found that 20 kDa PEG and 20 kDa PMPC had the highest stability in the presence of salt or heparin and were the most effective at blocking protein adsorption. Following intravenous delivery, 20 kDa PEG and PMPC coronas both extended circulation half-lives 5-fold compared to 5 kDa PEG. However, in mouse orthotopic xenograft tumors, zwitterionic PMPC-based polyplexes showed highest in vivo luciferase silencing (>75% knockdown for 10 days with single IV 1 mg/kg dose) and 3-fold higher average tumor cell uptake than 5 kDa PEG polyplexes (20 kDa PEG polyplexes were only 2-fold higher than 5 kDa PEG). These results show that high molecular weight zwitterionic polyplex coronas significantly enhance siRNA polyplex pharmacokinetics without sacrificing polyplex uptake and bioactivity within tumors when compared to traditional PEG architectures.
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Affiliation(s)
- Meredith A Jackson
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Thomas A Werfel
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Elizabeth J Curvino
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Fang Yu
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Taylor E Kavanaugh
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Samantha M Sarett
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Mary D Dockery
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Kameron V Kilchrist
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Ayisha N Jackson
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Todd D Giorgio
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
| | - Craig L Duvall
- Department of Biomedical Engineering, Vanderbilt University , Nashville, Tennessee 37240, United States
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Kinetics of the Aqueous-Phase Copolymerization of MAA and PEGMA Macromonomer: Influence of Monomer Concentration and Side Chain Length of PEGMA. Processes (Basel) 2017. [DOI: 10.3390/pr5020019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Palmiero UC, Agostini A, Gatti S, Sponchioni M, Valenti V, Brunel L, Moscatelli D. RAFT Macro-Surfmers and Their Use in the ab Initio RAFT Emulsion Polymerization To Decouple Nanoparticle Size and Polymer Molecular Weight. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01827] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Umberto Capasso Palmiero
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Azzurra Agostini
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Simone Gatti
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Mattia Sponchioni
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Viola Valenti
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Lucia Brunel
- Department
of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Davide Moscatelli
- Department
of Chemistry, Materials and Chemical Engineering, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
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Sponchioni M, Ferrari R, Morosi L, Moscatelli D. Influence of the polymer structure over self-assembly and thermo-responsive properties: The case of PEG-b-PCL grafted copolymers via a combination of RAFT and ROP. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28177] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mattia Sponchioni
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Milano 20131 Italy
| | - Raffaele Ferrari
- Department of Chemistry and Applied Biosciences; Institute for Chemical and Bioengineering; Zurich 8093 Switzerland
| | - Lavinia Morosi
- IRCSS-Istituto di Ricerche Farmacologiche Mario Negri; Milano 20156 Italy
| | - Davide Moscatelli
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Milano 20131 Italy
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