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Davidson E, Pereira J, Leon S, Navarro E, Kavalappara SR, Murphy Z, Anagnostopoulos V, Bag S, Santra S. Chitosan coated selenium: A versatile nano-delivery system for molecular cargoes. Int J Biol Macromol 2024; 267:131176. [PMID: 38599433 DOI: 10.1016/j.ijbiomac.2024.131176] [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: 01/10/2024] [Revised: 03/08/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
The use of nanoscale delivery platforms holds tremendous potential to overcome the current limitations associated with the conventional delivery of genetic materials and hydrophobic compounds. Therefore, there is an imperative need to develop a suitable alternative nano-enabled delivery platform to overcome these limitations. This work reports the first one-step hydrothermal synthesis of chitosan functionalized selenium nanoparticles (Selenium-chitosan, SeNP) that are capable of serving as a versatile nanodelivery platform for different types of active ingredients. The chitosan functionalization modified the surface charge to allow the loading of active ingredients and improve biocompatibility. The effective loading of the SeNP was demonstrated using genetic material, a hydrophobic small molecule, and an antibiotic. Furthermore, the loading of active ingredients showed no detrimental effect on the specific properties (fluorescence and bactericidal) of the studied active ingredients. In vitro antimicrobial inhibitory studies exhibited good compatibility between the SeNP delivery platform and Penicillin G (Pen), resulting in a reduction of the minimum inhibitory concentration (MIC) from 32 to 16 ppm. Confocal microscopy images showed the uptake of the SeNP by a macrophage cell line (J774A.1), demonstrating trackability and intracellular delivery of an active ingredient. In summary, the present work demonstrates the potential of SeNP as a suitable delivery platform for biomedical and agricultural applications.
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Affiliation(s)
- Edwin Davidson
- Department of Chemistry, University of Central Florida, Orlando, FL, 32826, USA.; NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
| | - Jorge Pereira
- Department of Chemistry, University of Central Florida, Orlando, FL, 32826, USA.; NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
| | - Sebastian Leon
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA
| | - Ernesto Navarro
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA.; Department of Physiology, Neuroscience and Behavioral Sciences, School of Medicine, St. George's University, St. George, Grenada
| | | | - Zachary Murphy
- Department of Chemistry, University of Central Florida, Orlando, FL, 32826, USA
| | | | - Sudeep Bag
- Department of Plant Pathology, University of Georgia, Tifton, GA, USA
| | - Swadeshmukul Santra
- Department of Chemistry, University of Central Florida, Orlando, FL, 32826, USA.; NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA.; Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, 32826, USA..
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Davidson E, Pereira J, Gan Giannelli G, Murphy Z, Anagnostopoulos V, Santra S. Multi-Functional Chitosan Nanovesicles Loaded with Bioactive Manganese for Potential Wound Healing Applications. Molecules 2023; 28:6098. [PMID: 37630350 PMCID: PMC10459768 DOI: 10.3390/molecules28166098] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Chronic skin wound is a chronic illness that possesses a risk of infection and sepsis. In particular, infections associated with antibiotic-resistant bacterial strains are challenging to treat. To combat this challenge, a suitable alternative that is complementary to antibiotics is desired for wound healing. In this work, we report multi-functional nanoscale chitosan vesicles loaded with manganese (Chi-Mn) that has potential to serve as a new tool to augment traditional antibiotic treatment for skin wound healing. Chi-Mn showed antioxidant activity increase over time as well as antimicrobial activity against E. coli and P. aeruginosa PA01. The modified motility assay that mimicked a skin wound before bacterial colonization showed inhibition of bacterial growth with Chi-Mn treatment at a low area density of 0.04 µg of Mn per cm2. Furthermore, this study demonstrated the compatibility of Chi-Mn with a commercial antibiotic showing no loss of antimicrobial potency. In vitro cytotoxicity of Chi-Mn was assessed with macrophages and dermal cell lines (J774A.1 and HDF) elucidating biocompatibility at a wide range (2 ppm-256 ppm). A scratch wound assay involving human dermal fibroblast (HDF) cells was performed to assess any negative effect of Chi-Mn on cell migration. Confocal microscopy study confirmed that Chi-Mn tested at the MIC (16 ppm Mn) has no effect on cell migration with respect to control. Overall, this study demonstrated the potential of Chi-Mn nanovesicles for wound healing applications.
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Affiliation(s)
- Edwin Davidson
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA; (J.P.); (Z.M.); (V.A.)
- NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA;
| | - Jorge Pereira
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA; (J.P.); (Z.M.); (V.A.)
- NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA;
| | - Giuliana Gan Giannelli
- NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA;
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826, USA
| | - Zachary Murphy
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA; (J.P.); (Z.M.); (V.A.)
| | - Vasileios Anagnostopoulos
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA; (J.P.); (Z.M.); (V.A.)
| | - Swadeshmukul Santra
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA; (J.P.); (Z.M.); (V.A.)
- NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USA;
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826, USA
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Piao Z, Patel M, Park JK, Jeong B. Poly(l-alanine- co-l-lysine)- g-Trehalose as a Biomimetic Cryoprotectant for Stem Cells. Biomacromolecules 2022; 23:1995-2006. [PMID: 35412815 DOI: 10.1021/acs.biomac.1c01701] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Poly(l-alanine-co-l-lysine)-graft-trehalose (PAKT) was synthesized as a natural antifreezing glycopolypeptide (AFGP)-mimicking cryoprotectant for cryopreservation of mesenchymal stem cells (MSCs). FTIR and circular dichroism spectra indicated that the content of the α-helical structure of PAK decreased after conjugation with trehalose. Two protocols were investigated in cryopreservation of MSCs to prove the significance of the intracellularly delivered PAKT. In protocol I, MSCs were cryopreserved at -196 °C for 7 days by a slow-cooling procedure in the presence of both PAKT and free trehalose. In protocol II, MSCs were preincubated at 37 °C in a PAKT solution, followed by cryopreservation at -196 °C in the presence of free trehalose for 7 days by the slow-cooling procedure. Polymer and trehalose concentrations were varied by 0.0-1.0 and 0.0-15.0 wt %, respectively. Cell recovery was significantly improved by protocol II with preincubation of the cells in the PAKT solution. The recovered cells from protocol II exhibited excellent proliferation and maintained multilineage potentials into osteogenic, chondrogenic, and adipogenic differentiation, similar to MSCs recovered from cryopreservation in the traditional 10% dimethyl sulfoxide system. Ice recrystallization inhibition (IRI) activity of the polymers/trehalose contributed to cell recovery; however, intracellularly delivered PEG-PAKT was the major contributor to the enhanced cell recovery in protocol II. Inhibitor studies suggested that macropinocytosis and caveolin-dependent endocytosis are the main mechanisms for the intracellular delivery of PEG-PAKT. 1H NMR and FTIR spectra suggested that the intracellular PEG-PAKTs interact with water and stabilize the cells during cryopreservation.
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Affiliation(s)
- Zhengyu Piao
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Madhumita Patel
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Jin Kyung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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Colijn I, Fokkink R, Schroën K. Quantification of energy input required for chitin nanocrystal aggregate size reduction through ultrasound. Sci Rep 2021; 11:17217. [PMID: 34446774 PMCID: PMC8390482 DOI: 10.1038/s41598-021-96657-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 08/09/2021] [Indexed: 02/07/2023] Open
Abstract
Nanoparticles have been claimed to contribute efficiently to e.g. the mechanical strength of composite materials when present as individual particles. However, these particles tend to aggregate. In this paper we prepare nanocrystals from chitin, a product with high potential added value for application in bio-based materials, and investigate the effect of ultrasound on de-aggregation. Chitin nanocrystals with a length ~ 200 nm and a diameter ~ 15 nm, were obtained via acid hydrolysis of crude chitin powder. Freeze drying resulted in severe aggregation and after redispersion sizes up to ~ 200 µm were found. Ultrasound treatment was applied and break up behaviour was investigated using static light scattering, dynamic light scattering, and laser diffraction. Our results suggest that the cumulative energy input was the dominant factor for chitin nanocrystal aggregate breakup. When a critical energy barrier of ~ 100 kJ/g chitin nanocrystals was exceeded, the chitin nanocrystal aggregates broke down to nanometre range. The break up was mostly a result of fragmentation: the aggregation energy of chitin nanocrystal aggregates was quantified to be ~ 370 kJ/g chitin nanocrystals and we hypothesize that mainly van der Waals interactions and hydrogen bonds are responsible for aggregation.
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Affiliation(s)
- Ivanna Colijn
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Remco Fokkink
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Physical Chemistry and Soft Matter Group, Stippeneng 4, 6708 WE Wagningen, The Netherlands
| | - Karin Schroën
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
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Padilha AC, Vivas MG, Melo MDSF, Campos MGN. Fluorescent chitosan nanoparticles as a carrier system for trackable drug delivery. POLYM-PLAST TECH MAT 2021. [DOI: 10.1080/25740881.2020.1867169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Marcelo Gonçalves Vivas
- Laboratório de Espectroscopia Óptica e Fotônica, Federal University of Alfenas, Poços de Caldas, Brazil
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Enhanced self-humidification and proton conductivity in magnetically aligned NiO-Co3O4/chitosan nanocomposite membranes for high-temperature PEMFCs. Polym J 2021. [DOI: 10.1038/s41428-021-00466-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Vaginal Polyelectrolyte Layer-by-Layer Films Based on Chitosan Derivatives and Eudragit ® S100 for pH Responsive Release of Tenofovir. Mar Drugs 2020; 18:md18010044. [PMID: 31936439 PMCID: PMC7024361 DOI: 10.3390/md18010044] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 12/21/2022] Open
Abstract
Women are still at high risk of contracting the human immunodeficiency virus (HIV) virus due to the lack of protection methods under their control, especially in sub-Saharan countries. Polyelectrolyte multilayer smart vaginal films based on chitosan derivatives (chitosan lactate, chitosan tartate, and chitosan citrate) and Eudragit® S100 were developed for the pH-sensitive release of Tenofovir. Films were characterized through texture analysis and scanning electron microscopy (SEM). Swelling and drug release studies were carried out in simulated vaginal fluid and a mixture of simulated vaginal and seminal fluids. Ex vivo mucoadhesion was evaluated in bovine vaginal mucosa. SEM micrographs revealed the formation of multilayer films. According to texture analysis, chitosan citrate was the most flexible compared to chitosan tartrate and lactate. The swelling studies showed a moderate water uptake (<300% in all cases), leading to the sustained release of Tenofovir in simulated vaginal fluid (up to 120 h), which was accelerated in the simulated fluid mixture (4–6 h). The films had high mucoadhesion in bovine vaginal mucosa. The multilayer films formed by a mixture of chitosan citrate and Eudragit® S100 proved to be the most promising, with zero toxicity, excellent mechanical properties, moderate swelling (<100%), high mucoadhesion capacity, and Tenofovir release of 120 h and 4 h in vaginal fluid and the simulated fluid mixture respectively.
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