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Bardajee GR, Ghadimkhani R, Jafarpour F. A biocompatible double network hydrogel based on poly (acrylic acid) grafted onto sodium alginate for doxorubicin hydrochloride anticancer drug release. Int J Biol Macromol 2024; 260:128871. [PMID: 38123038 DOI: 10.1016/j.ijbiomac.2023.128871] [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: 10/09/2023] [Revised: 12/03/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023]
Abstract
This study involved the synthesis of a new biocompatible slow-release hydrogel named poly (acrylic acid) grafted onto sodium alginate (poly (AA-g-SA)) double network hydrogel (DNH). The hydrogel was created by polymerization of acrylic acid grafted onto sodium alginate polysaccharide using crosslinkers N,N'-methylenebisacrylamide and calcium chloride via free radical polymerization. The water absorbency of the poly (AA-g-SA) double network hydrogel was improved by optimizing the quantities of ammonium persulfate initiator, pH-sensitive monomer of acrylic acid, and crosslinkers. Various analytical techniques including attenuated total reflection Fourier-transformed infrared (ATR-FTIR), X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), atomic force microscopy (AFM), and Brunauer-Emmett-Teller specific surface area analysis (BET) were used to characterize the synthesized hydrogels. The swelling and on-off switching behaviors of the hydrogels were investigated in deionized (DI) water at different temperatures and pH values. The optimum poly (AA-g-SA) DNH was tested for in vitro release of a hydrophilic chemotherapeutic drug, doxorubicin hydrochloride (DOX). The eco-friendly hydrogel favorably optimized the DOX slow release owing to its swelling rate, high absorption and regeneration capabilities. The findings of this study may have significant implications for medical and scientific research.
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Affiliation(s)
| | - Roghieh Ghadimkhani
- Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
| | - Farnaz Jafarpour
- School of Chemistry, College of Science, University of Tehran, 14155-6455, Tehran, Iran
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Pérez-Chávez NA, Albesa AG, Longo GS. Investigating the Impact of Network Functionalization on Protein Adsorption to Polymer Nanogels. J Phys Chem B 2024; 128:371-380. [PMID: 38156604 DOI: 10.1021/acs.jpcb.3c07283] [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: 01/03/2024]
Abstract
This study explores the impact of network functionalization and chemical composition on the pH-responsive behavior of polymer nanogels and their adsorption of proteins. Using a thermodynamic theory informed by a molecular model, this work evaluates the interactions of three proteins with varying isoelectric points (insulin, myoglobin, and cytochrome c) and pH-responsive nanogels based on methacrylic acid or allylamine motifs. Three different functionalization strategies are considered, with pH-responsive segments distributed randomly, at the center, or on the surface of the polymer network. Our results show that the spatial distribution of functional units affects both the nanogels' mechanical response to pH changes and the level and localization of adsorbed proteins. The dependence of protein adsorption on the salt concentration is also investigated, with the conclusion that it is best to encapsulate proteins at low salt concentrations and aim for release at high salt concentrations. These results provide valuable information for the design of pH-responsive nanogels as vehicles for protein encapsulation, transport, and administration.
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Affiliation(s)
- Néstor A Pérez-Chávez
- Instituto de Investigaciones Fisicoquímicas, Teóricas y Aplicadas (INIFTA), UNLP-CONICET, diag. 113 & calle 64, La Plata B1906ZAA, Argentina
| | - Alberto G Albesa
- Instituto de Investigaciones Fisicoquímicas, Teóricas y Aplicadas (INIFTA), UNLP-CONICET, diag. 113 & calle 64, La Plata B1906ZAA, Argentina
| | - Gabriel S Longo
- Instituto de Investigaciones Fisicoquímicas, Teóricas y Aplicadas (INIFTA), UNLP-CONICET, diag. 113 & calle 64, La Plata B1906ZAA, Argentina
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Chiarpotti MV, Longo GS, Del Pópolo MG. Voltage-Induced Adsorption of Cationic Nanoparticles on Lipid Membranes. J Phys Chem B 2022; 126:2230-2240. [PMID: 35293749 DOI: 10.1021/acs.jpcb.1c10499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We evaluate the effects of an applied electric potential on the adsorption/desorption mechanism of cationic nanoparticles on lipid membranes. By applying a molecular theory that allows calculating nanoparticle adsorption isotherms and free-energy profiles, we identify the conditions under which the external voltage promotes the adsorption of nanoparticles coated with cell penetrating peptides. We consider symmetric and asymmetric membranes made of neutral and acidic lipids and cover a wide range of environmental conditions (external voltage, pH, salt, and nanoparticles concentration) relevant to both electrochemical experiments and biological systems. For neutral membranes at low concentration of salt, a moderate external voltage (<100 mV) induces spontaneous adsorption of nanoparticles. For membranes containing a small fraction of anionic lipids, the external potential has little effect on the interfacial concentration of nanoparticles, and the membrane surface charge dominates the adsorption behavior. In all cases, the membrane-particle effective interactions, and its dependence on the external bias, are strongly modulated by the concentration of salt. At 100 mM NaCl, the external potential has almost no effect on the adsorption free energy profiles. In general, we provide a theoretical framework to evaluate the conditions under which nanoparticles are thermodynamically adsorbed or kinetically restrained to the vicinity of the membrane, and to assess the impact of the nanoparticles on the interfacial electrostatic properties.
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Affiliation(s)
- María V Chiarpotti
- Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET & Facultad de Ciencias Exactas y Naturales, UNCUYO, Padre Contreras 1300, Mendoza, Argentina, C.P. 5500
| | - Gabriel S Longo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) UNLP-CONICET, Diagonal 113 & 64 S/N, La Plata, Argentina, C.P. B1904DPI
| | - Mario G Del Pópolo
- Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET & Facultad de Ciencias Exactas y Naturales, UNCUYO, Padre Contreras 1300, Mendoza, Argentina, C.P. 5500
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Ung C, Tsoli M, Liu J, Cassano D, Pocoví-Martínez S, Upton DH, Ehteda A, Mansfeld FM, Failes TW, Farfalla A, Katsinas C, Kavallaris M, Arndt GM, Vittorio O, Cirillo G, Voliani V, Ziegler DS. Doxorubicin-Loaded Gold Nanoarchitectures as a Therapeutic Strategy against Diffuse Intrinsic Pontine Glioma. Cancers (Basel) 2021; 13:1278. [PMID: 33805713 PMCID: PMC7999568 DOI: 10.3390/cancers13061278] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 01/11/2023] Open
Abstract
Diffuse Intrinsic Pontine Gliomas (DIPGs) are highly aggressive paediatric brain tumours. Currently, irradiation is the only standard treatment, but is palliative in nature and most patients die within 12 months of diagnosis. Novel therapeutic approaches are urgently needed for the treatment of this devastating disease. We have developed non-persistent gold nano-architectures (NAs) functionalised with human serum albumin (HSA) for the delivery of doxorubicin. Doxorubicin has been previously reported to be cytotoxic in DIPG cells. In this study, we have preclinically evaluated the cytotoxic efficacy of doxorubicin delivered through gold nanoarchitectures (NAs-HSA-Dox). We found that DIPG neurospheres were equally sensitive to doxorubicin and doxorubicin-loaded NAs. Colony formation assays demonstrated greater potency of NAs-HSA-Dox on colony formation compared to doxorubicin. Western blot analysis indicated increased apoptotic markers cleaved Parp, cleaved caspase 3 and phosphorylated H2AX in NAs-HSA-Dox treated DIPG neurospheres. Live cell content and confocal imaging demonstrated significantly higher uptake of NAs-HSA-Dox into DIPG neurospheres compared to doxorubicin alone. Despite the potency of the NAs in vitro, treatment of an orthotopic model of DIPG showed no antitumour effect. This disparate outcome may be due to the integrity of the blood-brain barrier and highlights the need to develop therapies to enhance penetration of drugs into DIPG.
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Affiliation(s)
- Caitlin Ung
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
| | - Maria Tsoli
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
| | - Jie Liu
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
| | - Domenico Cassano
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, 56127 Pisa, Italy; (D.C.); (S.P.-M.); (V.V.)
| | - Salvador Pocoví-Martínez
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, 56127 Pisa, Italy; (D.C.); (S.P.-M.); (V.V.)
| | - Dannielle H. Upton
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
| | - Anahid Ehteda
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
| | - Friederike M. Mansfeld
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, University of New South Wales, Kensington, NSW 2052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash University, Royal Parade, Parkville, VIC 3052, Australia
| | - Timothy W. Failes
- ACRF Drug Discovery Centre, Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (T.W.F.); (G.M.A.)
| | - Annafranca Farfalla
- Department of Pharmacy Health and Nutritional Science, University of Calabria, 87036 Rende, Italy; (A.F.); (G.C.)
| | - Christopher Katsinas
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
| | - Maria Kavallaris
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, University of New South Wales, Kensington, NSW 2052, Australia
| | - Greg M. Arndt
- ACRF Drug Discovery Centre, Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (T.W.F.); (G.M.A.)
| | - Orazio Vittorio
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, University of New South Wales, Kensington, NSW 2052, Australia
| | - Giuseppe Cirillo
- Department of Pharmacy Health and Nutritional Science, University of Calabria, 87036 Rende, Italy; (A.F.); (G.C.)
| | - Valerio Voliani
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, 56127 Pisa, Italy; (D.C.); (S.P.-M.); (V.V.)
| | - David S. Ziegler
- Children’s Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, High Street, Randwick, NSW 2052, Australia; (C.U.); (J.L.); (D.H.U.); (A.E.); (F.M.M.); (C.K.); (M.K.); (O.V.)
- School of Women’s and Children’s Health, University of New South Wales, Kensington, NSW 2052, Australia
- Kids Cancer Centre, Sydney Children’s Hospital, Randwick, NSW 2052, Australia
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