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Guo C, Yuan H, Yu Y, Gao Z, Zhang Y, Yin T, He H, Gou J, Tang X. FRET-based analysis on the structural stability of polymeric micelles: Another key attribute beyond PEG coverage and particle size affecting the blood clearance. J Control Release 2023; 360:734-746. [PMID: 37454913 DOI: 10.1016/j.jconrel.2023.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
Various attributes of micelles, such as PEG density and particle size, are considered to be related to blood clearance. The structural stability of micelles is another key attribute that will affect the in vivo fate. This study employed fluorescence resonance energy transfer (FRET) analysis to guide the preparation of polymeric micelles with different structural stability. Micelles prepared using copolymers with longer hydrophobic blocks showed higher structural stability; emulsification was a better method than nanoprecipitation to prepare stable micelles. The fast chain exchange kinetics and the high-water content of micellar cores explained the low structural stability of those micelles. Moreover, this study highlighted the importance of structural stability that affected blood clearance in concert with PEG length and particle size. One-third of the small and stable micelles were detected in the blood 24 h after injection. While unstable micelles would be cleared from the circulation within 4 h. Notably, there would be a threshold of structural stability. Micelles with structural stability below this threshold were quickly cleared even if they possessed a longer PEG length and a smaller size. In contrast, higher structural stability allowed polymeric micelles to maintain higher integrity in vivo and enhance tumor accumulation and anti-tumor efficacy. In conclusion, this study systematically analyzed the importance of the structural stability of micelles on the in vivo fate.
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Affiliation(s)
- Chen Guo
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Haoyang Yuan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Ying Yu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Zhencheng Gao
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Yu Zhang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Tian Yin
- School of Functional Food and Wine, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Haibing He
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China
| | - Jingxin Gou
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China.
| | - Xing Tang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, Liaoning, PR China.
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2
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de Oliveira FA, Albuquerque LJC, Castro CE, Riske KA, Bellettini IC, Giacomelli FC. Reduced cytotoxicity of nanomaterials driven by nano-bio interactions: Case study of single protein coronas enveloping polymersomes. Colloids Surf B Biointerfaces 2022; 213:112387. [PMID: 35151044 DOI: 10.1016/j.colsurfb.2022.112387] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/28/2022] [Accepted: 01/30/2022] [Indexed: 11/12/2022]
Abstract
The protein adsorption onto poly(acrylic acid)-block-polystyrene (PAA22-b-PS144) polymersomes has been investigated with regard to structural features, thermodynamic aspects and biological consequences. The light scattering measurements revealed the formation of protein coronas enveloping the polymeric capsules regardless of the chemical nature of the biomacromolecules. The experiments were conducted by using lysozyme, immunoglobulin G - IgG and bovine serum albumin - BSA as model proteins due to their differences concerning size and residual surface charge at physiological pH. The protein adsorption was further confirmed by isothermal titration calorimetry, and the experimental data suggest that the phenomenon is mainly governed by hydrogen bonding and van der Waals interactions. The pre-existing protein layer via the pre-incubation in protein environments notably attenuates the cytotoxicity of the nanomaterial compared to the pristine counterparts. This approach can possibly be extended to different types of assemblies when intermolecular interactions are able to induce protein adsorption and the development of protein coronas around nanoparticles. Such fairly simple method may be convenient to engineer safer nanomaterials towards a variety of biomedical applications when the nanotoxicity is an issue. Additionally, the strategy can possibly be used to tailor the surface properties of nanoparticles by adsorbing specific proteins for targeting purposes.
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Affiliation(s)
| | | | - Carlos E Castro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | - Karin A Riske
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ismael C Bellettini
- Departamento de Ciências Exatas e Educação, Universidade Federal de Santa Catarina, Blumenau, Brazil
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
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3
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Estupiñán Ó, Niza E, Bravo I, Rey V, Tornín J, Gallego B, Clemente-Casares P, Moris F, Ocaña A, Blanco-Lorenzo V, Rodríguez-Santamaría M, Vallina-Álvarez A, González MV, Rodríguez A, Hermida-Merino D, Alonso-Moreno C, Rodríguez R. Mithramycin delivery systems to develop effective therapies in sarcomas. J Nanobiotechnology 2021; 19:267. [PMID: 34488783 PMCID: PMC8419920 DOI: 10.1186/s12951-021-01008-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 08/20/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sarcomas comprise a group of aggressive malignancies with very little treatment options beyond standard chemotherapy. Reposition of approved drugs represents an attractive approach to identify effective therapeutic compounds. One example is mithramycin (MTM), a natural antibiotic which has demonstrated a strong antitumour activity in several tumour types, including sarcomas. However, its widespread use in the clinic was limited by its poor toxicity profile. RESULTS In order to improve the therapeutic index of MTM, we have loaded MTM into newly developed nanocarrier formulations. First, polylactide (PLA) polymeric nanoparticles (NPs) were generated by nanoprecipitation. Also, liposomes (LIP) were prepared by ethanol injection and evaporation solvent method. Finally, MTM-loaded hydrogels (HG) were obtained by passive loading using a urea derivative non-peptidic hydrogelator. MTM-loaded NPs and LIP display optimal hydrodynamic radii between 80 and 105 nm with a very low polydispersity index (PdI) and encapsulation efficiencies (EE) of 92 and 30%, respectively. All formulations show a high stability and different release rates ranging from a fast release in HG (100% after 30 min) to more sustained release from NPs (100% after 24 h) and LIP (40% after 48 h). In vitro assays confirmed that all assayed MTM formulations retain the cytotoxic, anti-invasive and anti-stemness potential of free MTM in models of myxoid liposarcoma, undifferentiated pleomorphic sarcoma and chondrosarcoma. In addition, whole genome transcriptomic analysis evidenced the ability of MTM, both free and encapsulated, to act as a multi-repressor of several tumour-promoting pathways at once. Importantly, the treatment of mice bearing sarcoma xenografts showed that encapsulated MTM exhibited enhanced therapeutic effects and was better tolerated than free MTM. CONCLUSIONS Overall, these novel formulations may represent an efficient and safer MTM-delivering alternative for sarcoma treatment.
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Affiliation(s)
- Óscar Estupiñán
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain
| | - Enrique Niza
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain.,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain
| | - Iván Bravo
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain.,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain
| | - Verónica Rey
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain
| | - Juan Tornín
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,Materials Science and Engineering Department, Universitat Politècnica de Catalunya (UPC), Escola d'Enginyeria Barcelona Est (EEBE), 08019, Barcelona, Spain.,Institut de Recerca Sant Joan de Déu, 08034, Barcelona, Spain
| | - Borja Gallego
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Pilar Clemente-Casares
- Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain.,Centro Regional de Investigaciones Biomédicas (CRIB), UCLM, 02008, Albacete, Spain
| | | | - Alberto Ocaña
- CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.,Experimental Therapeutics Unit, Hospital Clínico San Carlos, IdISSC, 28040, Madrid, Spain
| | - Verónica Blanco-Lorenzo
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Servicio de Anatomía Patológica, Hospital Universitario Central de Asturias, 33011, Oviedo, Spain
| | - Mar Rodríguez-Santamaría
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Aitana Vallina-Álvarez
- Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,Servicio de Anatomía Patológica, Hospital Universitario Central de Asturias, 33011, Oviedo, Spain
| | - M Victoria González
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.,Departamento de Cirugía, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Aida Rodríguez
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, 38000, Grenoble, France
| | - Carlos Alonso-Moreno
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain. .,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain.
| | - René Rodríguez
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain. .,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain. .,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.
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4
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Nanoparticle shell structural cues drive in vitro transport properties, tissue distribution and brain accessibility in zebrafish. Biomaterials 2021; 277:121085. [PMID: 34461457 DOI: 10.1016/j.biomaterials.2021.121085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/26/2021] [Accepted: 08/23/2021] [Indexed: 01/14/2023]
Abstract
Zwitterion polymers with strong antifouling properties have been suggested as the prime alternative to polyethylene glycol (PEG) for drug nanocarriers surface coating. It is believed that PEG coating shortcomings, such as immune responses and incomplete protein repellency, could be overcome by zwitterionic polymers. However, no systematic study has been conducted so far to complete a comparative appraisal of PEG and zwitterionic-coating effects on nanoparticles (NPs) stealthness, cell uptake, cell barrier translocation and biodistribution in the context of nanocarriers brain targeting. Core-shell polymeric particles with identical cores and a shell of either PEG or poly(2-methacryloyloxyethyl phosphorylcholine (PMPC) were prepared by impinging jet mixer nanoprecipitation. NPs with similar size and surface potential were systematically compared using in vitro and in vivo assays. NPs behavior differences were rationalized based on their protein-particles interactions. PMPC-coated NPs were significantly more endocytosed by mouse macrophages or brain resident macrophages compared to PEGylated NPs but exhibited the remarkable ability to cross the blood-brain barrier in in vitro models. Nanoscale flow cytometry assays showed significantly more adsorbed proteins on PMPC-coated NPs than PEG-coated NPs. In vivo, distribution in zebrafish larvae, showed a strong propensity for PMPC-coated NPs to adhere to the vascular endothelium, while PEG-coated NPs were able to circulate for a longer time and escape the bloodstream to penetrate deep into the cerebral tissue. The stark differences between these two types of particles, besides their similarities in size and surface potential, points towards the paramount role of surface chemistry in controlling NPs fate likely via the formation of distinct protein corona for each coating.
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5
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Outstanding protein-repellent feature of soft nanoparticles based on poly(N-(2-hydroxypropyl) methacrylamide) outer shells. J Colloid Interface Sci 2020; 574:260-271. [DOI: 10.1016/j.jcis.2020.04.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/13/2022]
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6
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Li J, Yu X, Zhao Y, Zhang H, Li MH, Hu J. Biobased thermosensitive polyrotaxanes constructed by polymerization of cyclodextrin-triterpenoid inclusion complexes. Polym Chem 2020. [DOI: 10.1039/d0py00966k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three biobased thermosensitive polyrotaxanes with alternating multiblock structures have been constructed through polymerization of inclusion complexes in a convenient tandem way.
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Affiliation(s)
- Jiawei Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Xia Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yiran Zhao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Hao Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Min-Hui Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Chimie ParisTech
| | - Jun Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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7
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Domingues C, Alvarez-Lorenzo C, Concheiro A, Veiga F, Figueiras A. Nanotheranostic Pluronic-Like Polymeric Micelles: Shedding Light into the Dark Shadows of Tumors. Mol Pharm 2019; 16:4757-4774. [DOI: 10.1021/acs.molpharmaceut.9b00945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cátia Domingues
- Faculty of Pharmacy, University of Coimbra, Coimbra 3000-295, Portugal
- REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra 3004-504, Portugal
- CIMAGO, Center of Investigation on Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra 3004-531, Portugal
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Francisco Veiga
- Faculty of Pharmacy, University of Coimbra, Coimbra 3000-295, Portugal
- REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra 3004-504, Portugal
| | - Ana Figueiras
- Faculty of Pharmacy, University of Coimbra, Coimbra 3000-295, Portugal
- REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra 3004-504, Portugal
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8
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Niza E, Nieto-Jiménez C, Noblejas-López MDM, Bravo I, Castro-Osma JA, Cruz-Martínez FDL, Buchaca MMDS, Posadas I, Canales-Vázquez J, Lara-Sanchez A, Hermida-Merino D, Solano E, Ocaña A, Alonso-Moreno C. Poly(Cyclohexene Phthalate) Nanoparticles for Controlled Dasatinib Delivery in Breast Cancer Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1208. [PMID: 31461998 PMCID: PMC6780527 DOI: 10.3390/nano9091208] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 12/19/2022]
Abstract
The effect on the activity in breast cancer models of the small tyrosine kinase inhibitor dasatinib (DAS), either alone or in combination with other antitumoral agents, has been recently explored. However, DAS is characterized by its low and highly pH-dependent solubility, which could lead to poor uptake of the drug limiting its tumoral efficacy. Thus far, the development of safe and efficient delivery vehicles of DAS to improve the therapeutic efficacy minimizing the toxicity profile is still required. In this work, a biodegradable and biocompatible polyester is assessed, for the first time, as raw material for the generation of polymeric nanoparticles (NPs). NPs of 100 nm with a narrow polydispersity were formulated for the encapsulation of DAS. The enzymatic and cellular degradation of the new drug delivery system has been studied, and the toxicity and blood compatibility evaluated for its potential clinical use. The new material used for the generation of nanoparticles led to encapsulate DAS in an efficient manner with quicker release DAS profile when compared with the FDA-approved biopolymer Polylactide. The new DAS-loaded polymeric nanocarrier gave a superior efficacy when compared to free DAS with no difference in the mechanism of action. The new NPs shown to be a promising DAS delivery system to be further evaluated for breast cancer treatment.
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Affiliation(s)
- Enrique Niza
- Dpto. Inorgánica, Orgánica y Bioquímica. School of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - Cristina Nieto-Jiménez
- Oncología traslacional, Centro Regional de Investigaciones Biomédicas, University of Castilla, La Mancha, Spain
| | | | - Iván Bravo
- Dpto. Química Física. School of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - José Antonio Castro-Osma
- Dpto. Inorgánica, Orgánica y Bioquímica. School of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - Felipe de la Cruz-Martínez
- Dpto. Inorgánica, Orgánica y Bioquímica. Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, 13075 Ciudad Real, Spain
| | - Marc Martínez de Sarasa Buchaca
- Dpto. Inorgánica, Orgánica y Bioquímica. Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, 13075 Ciudad Real, Spain
| | - Inmaculada Posadas
- Unidad Asociada Neurodeath CSIC-UCLM, Dpto. de Ciencias Médicas, School of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - Jesús Canales-Vázquez
- Instituto de Energías Renovables, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - Agustín Lara-Sanchez
- Dpto. Inorgánica, Orgánica y Bioquímica. Facultad de Ciencias y Tecnologías Químicas, University of Castilla-La Mancha, 13075 Ciudad Real, Spain
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, 38000 Grenoble, France
| | - Eduardo Solano
- NCD beamline, ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Spain
| | | | - Carlos Alonso-Moreno
- Dpto. Inorgánica, Orgánica y Bioquímica. School of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain.
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9
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Trousil J, Syrová Z, Dal NJK, Rak D, Konefał R, Pavlova E, Matějková J, Cmarko D, Kubíčková P, Pavliš O, Urbánek T, Sedlák M, Fenaroli F, Raška I, Štěpánek P, Hrubý M. Rifampicin Nanoformulation Enhances Treatment of Tuberculosis in Zebrafish. Biomacromolecules 2019; 20:1798-1815. [PMID: 30785284 DOI: 10.1021/acs.biomac.9b00214] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mycobacterium tuberculosis, the etiologic agent of tuberculosis, is an intracellular pathogen of alveolar macrophages. These cells avidly take up nanoparticles, even without the use of specific targeting ligands, making the use of nanotherapeutics ideal for the treatment of such infections. Methoxy poly(ethylene oxide)- block-poly(ε-caprolactone) nanoparticles of several different polymer blocks' molecular weights and sizes (20-110 nm) were developed and critically compared as carriers for rifampicin, a cornerstone in tuberculosis therapy. The polymeric nanoparticles' uptake, consequent organelle targeting and intracellular degradation were shown to be highly dependent on the nanoparticles' physicochemical properties (the cell uptake half-lives 2.4-21 min, the degradation half-lives 51.6 min-ca. 20 h after the internalization). We show that the nanoparticles are efficiently taken up by macrophages and are able to effectively neutralize the persisting bacilli. Finally, we demonstrate, using a zebrafish model of tuberculosis, that the nanoparticles are well tolerated, have a curative effect, and are significantly more efficient compared to a free form of rifampicin. Hence, these findings demonstrate that this system shows great promise, both in vitro and in vivo, for the treatment of tuberculosis.
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Affiliation(s)
- Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic.,Department of Analytical Chemistry, Faculty of Science , Charles University , Hlavova 8 , 128 43 Prague 2 , Czech Republic
| | - Zdeňka Syrová
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Nils-Jørgen K Dal
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Dmytro Rak
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Jana Matějková
- Department of Medical Microbiology, Second Faculty of Medicine , Charles University and Motol University Hospital , V Úvalu 84 , 150 06 Prague 5 , Czech Republic
| | - Dušan Cmarko
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Pavla Kubíčková
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Oto Pavliš
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Tomáš Urbánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Marián Sedlák
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Federico Fenaroli
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Ivan Raška
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
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10
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Besford QA, Ju Y, Wang TY, Yun G, Cherepanov P, Hagemeyer CE, Cavalieri F, Caruso F. Self-Assembled Metal-Phenolic Networks on Emulsions as Low-Fouling and pH-Responsive Particles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802342. [PMID: 30156378 DOI: 10.1002/smll.201802342] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/24/2018] [Indexed: 06/08/2023]
Abstract
Interfacial self-assembly is a powerful organizational force for fabricating functional nanomaterials, including nanocarriers, for imaging and drug delivery. Herein, the interfacial self-assembly of pH-responsive metal-phenolic networks (MPNs) on the liquid-liquid interface of oil-in-water emulsions is reported. Oleic acid emulsions of 100-250 nm in diameter are generated by ultrasonication, to which poly(ethylene glycol) (PEG)-based polyphenolic ligands are assembled with simultaneous crosslinking by metal ions, thus forming an interfacial MPN. PEG provides a protective barrier on the emulsion phase and renders the emulsion low fouling. The MPN-coated emulsions have a similar size and dispersity, but an enhanced stability when compared with the uncoated emulsions, and exhibit a low cell association in vitro, a blood circulation half-life of ≈50 min in vivo, and are nontoxic to healthy mice. Furthermore, a model anticancer drug, doxorubicin, can be encapsulated within the emulsion phase at a high loading capacity (≈5 fg of doxorubicin per emulsion particle). The MPN coating imparts pH-responsiveness to the drug-loaded emulsions, leading to drug release at cell internalization pH and a potent cell cytotoxicity. The results highlight a straightforward strategy for the interfacial nanofabrication of pH-responsive emulsion-MPN systems with potential use in biomedical applications.
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Affiliation(s)
- Quinn A Besford
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Yi Ju
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Ting-Yi Wang
- NanoBiotechnology Laboratory, Australian Centre for Blood Diseases, Monash University, Victoria, 3004, Australia
| | - Gyeongwon Yun
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - PavelV Cherepanov
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Christoph E Hagemeyer
- NanoBiotechnology Laboratory, Australian Centre for Blood Diseases, Monash University, Victoria, 3004, Australia
| | - Francesca Cavalieri
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Frank Caruso
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia
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11
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de Castro CE, Ribeiro CAS, Alavarse AC, Albuquerque LJC, da Silva MCC, Jäger E, Surman F, Schmidt V, Giacomelli C, Giacomelli FC. Nanoparticle-Cell Interactions: Surface Chemistry Effects on the Cellular Uptake of Biocompatible Block Copolymer Assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2180-2188. [PMID: 29338258 DOI: 10.1021/acs.langmuir.7b04040] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of nanovehicles for intracellular drug delivery is strongly bound to the understating and control of nanoparticles cellular uptake process, which in turn is governed by surface chemistry. In this study, we explored the synthesis, characterization, and cellular uptake of block copolymer assemblies consisting of a pH-responsive poly[2-(diisopropylamino)ethyl methacrylate] (PDPA) core stabilized by three different biocompatible hydrophilic shells (a zwitterionic type poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) layer, a highly hydrated poly(ethylene oxide) (PEO) layer with stealth effect, and an also proven nontoxic and nonimmunogenic poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA) layer). All particles had a spherical core-shell structure. The largest particles with the thickest hydrophilic stabilizing shell obtained from PMPC40-b-PDPA70 were internalized to a higher level than those smaller in size and stabilized by PEO or PHPMA and produced from PEO122-b-PDPA43 or PHPMA64-b-PDPA72, respectively. Such a behavior was confirmed among different cell lines, with assemblies being internalized to a higher degree in cancer (HeLa) as compared to healthy (Telo-RF) cells. This fact was mainly attributed to the stronger binding of PMPC to cell membranes. Therefore, cellular uptake of nanoparticles at the sub-100 nm size range may be chiefly governed by the chemical nature of the stabilizing layer rather than particles size and/or shell thickness.
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Affiliation(s)
- Carlos E de Castro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | - Caroline A S Ribeiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | - Alex C Alavarse
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | | | - Maria C C da Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - František Surman
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Vanessa Schmidt
- Departamento de Química, Universidade Federal de Santa Maria , 97105-900 Santa Maria, RS, Brazil
| | - Cristiano Giacomelli
- Departamento de Química, Universidade Federal de Santa Maria , 97105-900 Santa Maria, RS, Brazil
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
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12
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Solubilization of poorly water-soluble compounds using amphiphilic phospholipid polymers with different molecular architectures. Colloids Surf B Biointerfaces 2017; 158:249-256. [DOI: 10.1016/j.colsurfb.2017.06.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/12/2017] [Accepted: 06/23/2017] [Indexed: 01/14/2023]
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13
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Efficacy assessment of self-assembled PLGA-PEG-PLGA nanoparticles: Correlation of nano-bio interface interactions, biodistribution, internalization and gene expression studies. Int J Pharm 2017; 533:389-401. [PMID: 28552798 DOI: 10.1016/j.ijpharm.2017.05.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 04/21/2017] [Accepted: 05/22/2017] [Indexed: 11/22/2022]
Abstract
The aim of our study was to develop and compare the biological performance of two types of biodegradable SN-38 loaded nanoparticles (NPs) with various surface properties, composed of low and high Mw triblock PLGA-PEG-PLGA copolymers, applying rational quality and safety by design approach. Therefore, along with the optimization of crucial physico-chemical properties and in order to evaluate the therapeutical potential and biocompatibility of prepared polymeric nanoparticles, analysis of nano-bio interactions, cell internalization, gene expression and biodistribution studies were performed. The optimized formulations, one of low Mw and one composed of high Mw PLGA-PEG-PLGA copolymer, exhibited different characteristics in terms of surface properties, particle size, zeta potential, drug loading, protein adsorption and biodistribution, which may be attributed to the variations in nano-bio interface interactions due to different NP building blocks length and Mw. On the contrary to protein adsorption and biodistribution studies, both types of NPs exhibited similar results during cell internalization and gene expression studies performed in cell culture medium containing serum proteins. This pool of useful data for internalization and efficacy as well as the notable advance in the circulation time of low Mw NPs may be further employed for shaping the potential of the designed nanocarriers.
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14
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Thermal sensitivity and protein anti-adsorption of hydroxypropyl cellulose-g- poly(2-(methacryloyloxy) ethyl phosphorylcholine). Carbohydr Polym 2017; 157:757-765. [DOI: 10.1016/j.carbpol.2016.10.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/13/2016] [Accepted: 10/15/2016] [Indexed: 12/22/2022]
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15
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Höcherl A, Jäger E, Jäger A, Hrubý M, Konefał R, Janoušková O, Spěváček J, Jiang Y, Schmidt PW, Lodge TP, Štěpánek P. One-pot synthesis of reactive oxygen species (ROS)-self-immolative polyoxalate prodrug nanoparticles for hormone dependent cancer therapy with minimized side effects. Polym Chem 2017. [DOI: 10.1039/c7py00270j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
One-pot synthesis of ROS-self-immolative polyoxalate prodrug NPs for cancer therapy.
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Affiliation(s)
- Anita Höcherl
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Olga Janoušková
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Yaming Jiang
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
| | | | | | - Petr Štěpánek
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
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16
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Ramireddy RR, Prasad P, Finne A, Thayumanavan S. Zwitterionic Amphiphilic Homopolymer Assemblies. Polym Chem 2015; 6:6083-6087. [PMID: 26779289 PMCID: PMC4713042 DOI: 10.1039/c5py00879d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Zwitterionic amphiphilic homopolymers can be conveniently prepared in one-pot using activated ester-based polymer precursors. We show that these zwitterionic polymers can (i) spontaneously self-assemble to form micelle-like and inverse micelle-like assemblies depending on the solvent environment; (ii) act as hydrophilic and hydrophobic nanocontainers in apolar and polar solvents respectively; (iii) undergo pH-responsive surface charge and size variations; (iv) exhibit least cytotoxicity compared to structurally analogous amphiphilic homopolymers.
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Affiliation(s)
| | - P Prasad
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - A Finne
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
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17
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Jäger A, Jäger E, Surman F, Höcherl A, Angelov B, Ulbrich K, Drechsler M, Garamus VM, Rodriguez-Emmenegger C, Nallet F, Štěpánek P. Nanoparticles of the poly([N-(2-hydroxypropyl)]methacrylamide)-b-poly[2-(diisopropylamino)ethyl methacrylate] diblock copolymer for pH-triggered release of paclitaxel. Polym Chem 2015. [DOI: 10.1039/c5py00567a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The potential of self-assembled nanoparticles for in vitro cytostatic activity has been explored on cancer cells.
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18
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Lee S, Jo W, Wi HS, Gutt C, Lee GW. Resolving high-speed colloidal dynamics beyond detector response time via two pulse speckle contrast correlation. OPTICS EXPRESS 2014; 22:21567-21576. [PMID: 25321536 DOI: 10.1364/oe.22.021567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report an alternate light scattering approach to measure intermediate scattering function and structures of colloidal suspension by using two-pulse speckle contrast correlation analysis. By systematically controlling time-delays between two laser pulses incident on the sample, we are able to monitor transient evolution of coherent diffraction pattern, from which particle dynamics at different length and time scales are obtained simultaneously. Our result demonstrates the feasibility of utilizing a megapixel detector to achieve sufficient data statistics in a short amount of time while enabling microsecond time-resolution. Ultimately, this method provides means to measure high-speed dynamics well beyond the time response limit of a large area two-dimensional (2D) detector.
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19
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de Castro CE, Mattei B, Riske KA, Jäger E, Jäger A, Stepánek P, Giacomelli FC. Understanding the structural parameters of biocompatible nanoparticles dictating protein fouling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9770-9779. [PMID: 25068509 DOI: 10.1021/la502179f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The development of nanocarriers for biomedical applications requires that these nanocarriers have special properties, including resistance to nonspecific protein adsorption. In this study, the fouling properties of PLA- and PCL-based block copolymer nanoparticles (NPs) have been evaluated by placing them in contact with model proteins. Block copolymer NPs were produced through the self-assembly of PEOm-b-PLAn and PEOm-b-PCLn. This procedure yielded nanosized objects with distinct structural features dependent on the length of the hydrophobic and hydrophilic blocks and the volume ratio. The protein adsorption events were examined in relation to size, chain length, surface curvature, and hydrophilic chain density. Fouling by BSA and lysozyme was considerably reduced as the length of the hydrophilic PEO-stabilizing shell increases. In contrast to the case of hydrophilic polymer-grafted planar surfaces, the current investigations suggest that the hydrophilic chain density did not markedly influence protein fouling. The protein adsorption took place at the outer surface of the NPs since neither BSA nor lysozyme was able to diffuse within the hydrophilic layer due to geometric restrictions. Protein binding is an exothermic process, and it is modulated mainly by polymer features. The secondary structures of BSA and lysozyme were not affected by the adhesion phenomena.
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Affiliation(s)
- Carlos E de Castro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
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20
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Vo CD, Cadman CJ, Donno R, Goos JACM, Tirelli N. Combination of episulfide ring-opening polymerization with ATRP for the preparation of amphiphilic block copolymers. Macromol Rapid Commun 2013; 34:156-62. [PMID: 23319175 DOI: 10.1002/marc.201200636] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 10/10/2012] [Indexed: 11/08/2022]
Abstract
We report for the first time the combination of ATRP and ring-opening episulfide polymerization as a means to synthesize polysulfide-based low-dispersity amphiphilic block copolymers. The most significant finding is the possibility to perform ATRP under mild conditions using poly(propylene sulfide) macroinitiators, apparently without any significant copper sequestration by the polysulfides. Using glycerol monomethacrylate (GMMA) as a hydrophilic monomer, the polymers self-assembled in colloidal structures with a morphology depending on the PS/GMMA ratio, but also probably on GMMA degree of polymerization. We here also present a new AFM-based method to calculate the average number of amphiphilic macromolecules per micelle.
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Affiliation(s)
- Cong-Duan Vo
- School of Materials, University of Manchester, Manchester, UK
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21
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de Freitas AGO, Dazzi RL, Muraro PIR, Schmidt V, Hörner M, Giacomelli C. Film/contact loading method improves the encapsulated amount of triazene anticancer compounds in polymeric micelles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2221-8. [PMID: 23498251 DOI: 10.1016/j.msec.2013.01.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/06/2012] [Accepted: 01/18/2013] [Indexed: 01/22/2023]
Abstract
The development of organic solvent-free methods for the encapsulation of hydrophobic molecules is necessary for advances in micelle-mediated drug delivery. In this study we investigated the film/contact approach in which the use of organic solvents is limited to the preparation of a dry film before encapsulation. Unloaded micelles of five structurally related block copolymers were placed in contact with thin homogeneous films of two hydrophobic triazene anticancer compounds (1-(4-amidophenyl)-3-(4-acetylphenyl)triazene (1) and corresponding triazenido complex with triphenylphosphanegold(I) fragment (2)). The micelle surface becomes saturated with the drug, which eventually penetrates as a front into the core. Because the drug interacts with both the shell and the core microenvironments of micelle during the process, the maximum loading capacities were very sensitive to block copolymer micelle composition, ranging from 2.2 to 20.4% (wt./wt. of polymer). We conclude that micelles with poly[2-(diisopropylamino)ethyl methacrylate] (PDPA) cores are the best option for the encapsulation of triazene compounds because i) they are prepared in absence of organic phase; ii) the drug concentration in the particles is high enough for a therapeutic effect and iii) the responsiveness properties of PDPA is appropriate for practical applications in pH-triggered drug release systems.
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Affiliation(s)
- Augusto G O de Freitas
- Universidade Federal de Santa Maria, Departamento de Química, 97105-970 Santa Maria-RS, Brazil
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22
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Combination chemotherapy using core-shell nanoparticles through the self-assembly of HPMA-based copolymers and degradable polyester. J Control Release 2012. [PMID: 23178950 DOI: 10.1016/j.jconrel.2012.11.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The preparation of core-shell polymeric nanoparticles simultaneously loaded with docetaxel (DTXL) and doxorubicin (DOX) is reported herein. The self-assembly of the aliphatic biodegradable copolyester PBS/PBDL (poly(butylene succinate-co-butylene dilinoleate)) and HPMA-based copolymers (N-(2-hydroxypropyl)methacrylamide-based copolymers) hydrophobically modified by the incorporation of cholesterol led to the formation of narrow-size-distributed (PDI<0.10) sub-200-nm polymeric nanoparticles suitable for passive tumor-targeting drug delivery based on the size-dependent EPR (enhanced permeability and retention) effect. The PHPMA provided to the self-assembled nanoparticle stability against aggregation as evaluated in vitro. The highly hydrophobic drug docetaxel (DTXL) was physically entrapped within the PBS/PBDL copolyester core and the hydrophilic drug doxorubicin hydrochloride (DOX·HCl) was chemically conjugated to the reactive PHPMA copolymer shell via hydrazone bonding that allowed its pH-sensitive release. This strategy enabled the combination chemotherapy by the simultaneous DOX and DTXL drug delivery. The structure of the nanoparticles was characterized in detail using static (SLS), dynamic (DLS) and electrophoretic (ELS) light scattering besides transmission electron microscopy (TEM). The use of nanoparticles simultaneously loaded with DTXL and DOX provided a more efficient suppression of tumor-cell growth in mice bearing EL-4 T cell lymphoma when compared to the effect of nanoparticles loaded with either DTXL or DOX separately. Additionally, the obtained self-assembled nanoparticles enable further development of targeting strategies based on the use of multiple ligands attached to an HPMA copolymer on the particle surface for simultaneous passive and active targeting and different combination therapies.
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23
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Edlund U, Rodriguez-Emmenegger C, Brynda E, Albersson AC. Self-assembling zwitterionic carboxybetaine copolymers via aqueous SET-LRP from hemicellulose multi-site initiators. Polym Chem 2012. [DOI: 10.1039/c2py20421e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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