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Kanemaki M, Shimizu HO, Inujima H, Miyake T, Shimizu K. Quantitative analyses of RBC movement in whole blood exposed to DC and ELF electric field. Bioelectromagnetics 2024; 45:159-170. [PMID: 38081752 DOI: 10.1002/bem.22493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/11/2023] [Accepted: 11/02/2023] [Indexed: 04/17/2024]
Abstract
For the study of biological effects of direct current (DC) and extremely low frequency (ELF) electric fields, we have quantitatively analyzed red blood cell (RBC) movement in whole blood. Considering the inhomogeneous distribution of electric fields in vivo, five different electric field distributions were generated under a microscope. For theoretical analyses, we assumed electrophoresis and dielectrophoresis as basic motive forces and obtained the spatial distribution of blood cell velocity. The RBC velocity was measured using video image analysis. The spatial dependence of the velocity showed good agreement with that predicted by theoretical analysis. This result suggests the validity of the theoretical model based on electrophoresis and dielectrophoresis for the study of ELF electric field exposure to inhomogeneous animal and human bodies. Next, using the same measurement system, we attempted to find the electric field strength at which these effects occur. The threshold values were found to be 0.40 and 1.6 kV/m, respectively, for DC and AC electric field exposures. Furthermore, we investigated the reproducibility of the field effects in more realistic conditions of human exposure. The RBCs in microchannels were exposed to the electric field generated in capacitive coupling using electrodes separated by an air gap. Even in the new condition, similar effects were observed, which also verified the validity of the analysis described above. These results will provide useful information for the safety assessment of field exposure and for the future biomedical applications of electric fields to manipulate RBCs in vivo.
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Affiliation(s)
- Miki Kanemaki
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Hisae O Shimizu
- Graduate School of Health Science, Hokkaido University of Science, Sapporo, Japan
| | - Hiroshi Inujima
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Takeo Miyake
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Koichi Shimizu
- School of Optoelectronic Engineering, Xidian University, Xi'an, China
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2
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Hughes MP. The cellular zeta potential: cell electrophysiology beyond the membrane. Integr Biol (Camb) 2024; 16:zyae003. [PMID: 38291769 DOI: 10.1093/intbio/zyae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/16/2023] [Accepted: 01/06/2024] [Indexed: 02/01/2024]
Abstract
The standard model of the cell membrane potential Vm describes it as arising from diffusion currents across a membrane with a constant electric field, with zero electric field outside the cell membrane. However, the influence of Vm has been shown to extend into the extracellular space where it alters the cell's ζ-potential, the electrical potential measured a few nm from the cell surface which defines how the cell interacts with charged entities in its environment, including ions, molecules, and other cells. The paradigm arising from surface science is that the ζ-potential arises only from fixed membrane surface charge, and has consequently received little interest. However, if the ζ-potential can mechanistically and dynamically change by alteration of Vm, it allows the cell to dynamically alter cell-cell and cell-molecule interactions and may explain previously unexplained electrophysiological behaviours. Whilst the two potentials Vm and ζ are rarely reported together, they are occasionally described in different studies for the same cell type. By considering published data on these parameters across multiple cell types, as well as incidences of unexplained but seemingly functional Vm changes correlating with changes in cell behaviour, evidence is presented that this may play a functional role in the physiology of red blood cells, macrophages, platelets, sperm, ova, bacteria and cancer. Understanding how these properties will improve understanding of the role of electrical potentials and charges in the regulation of cell function and in the way in which cells interact with their environment. Insight The zeta (ζ) potential is the electrical potential a few nm beyond the surface of any suspensoid in water. Whilst typically assumed to arise only from fixed charges on the cell surface, recent and historical evidence shows a strong link to the cell's membrane potential Vm, which the cell can alter mechanistically through the use of ion channels. Whilst these two potentials have rarely been studied simultaneously, this review collates data across multiple studies reporting Vm, ζ-potential, electrical properties of changes in cell behaviour. Collectively, this points to Vm-mediated ζ-potential playing a significant role in the physiology and activity of blood cells, immune response, developmental biology and egg fertilization, and cancer among others.
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Affiliation(s)
- Michael Pycraft Hughes
- Department of Biomedical Engineering/Healthcare Engineering Innovation Centre (HEIC), Khalifa University, Abu Dhabi, UAE
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Pearl WG, Selvam R, Karmenyan AV, Perevedentseva EV, Hung SC, Chang HH, Shushunova N, Prikhozhdenko ES, Bratashov D, Tuchin VV, Cheng CL. Berberine mediated fluorescent gold nanoclusters in biomimetic erythrocyte ghosts as a nanocarrier for enhanced photodynamic treatment. RSC Adv 2024; 14:3321-3334. [PMID: 38249664 PMCID: PMC10798219 DOI: 10.1039/d3ra08299g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Photodynamic therapy (PDT) is a well-established cancer treatment method that employs light to generate reactive oxygen species (ROS) causing oxidative damage to cancer cells. Nevertheless, PDT encounters challenges due to its oxygen-dependent nature, which makes it less effective in hypoxic tumor environments. To address this issue, we have developed a novel nanocomposite known as AuNC@BBR@Ghost. This nanocomposite combines the advantageous features of erythrocyte ghost membranes, the photoresponsive properties of gold nanoclusters (AuNC) and the anticancer characteristics of Berberine (BBR) for cancer treatment. Our synthesized AuNC efficiently produce ROS, with a 25% increase in efficiency when exposed to near-infrared (NIR) irradiation. By harnessing the oxygen-carrying capacity of erythrocyte ghost cells, AuNC@BBR@Ghost demonstrates a significant improvement in ROS generation, achieving an 80% efficiency. Furthermore, the AuNC exhibit tunable emission wavelengths due to their excellent fluorescent properties. In normoxic conditions, treatment of A549 lung carcinoma cells with AuNC@BBR@Ghost followed by exposure to 808 nm NIR irradiation results in a notable increase in intracellular ROS levels, accelerating cell death. In hypoxic conditions, when A549 cells were treated with AuNC@BBR@Ghost, the erythrocyte ghost acted as an oxygen supplement due to the residual hemoglobin, alleviating hypoxia and enhancing the nanocomposite's sensitivity to PDT treatment. Thus, the AuNC@BBR@Ghost nanocomposite achieves an improved effect by combining the advantageous properties of its individual components, resulting in enhanced ROS generation and adaptability to hypoxic conditions. This innovative approach successfully overcomes PDT's limitations, making AuNC@BBR@Ghost a promising nanotheranostic agent with significant potential for advanced cancer therapy.
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Affiliation(s)
- Wrenit Gem Pearl
- Department of Physics, National Dong Hwa University 97401 Taiwan
| | - Rajakar Selvam
- Department of Physics, National Dong Hwa University 97401 Taiwan
| | | | | | - Shih-Che Hung
- Department of Molecular Biology and Human Genetics, Tzu-Chi University Hualien 97004 Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu-Chi University Hualien 97004 Taiwan
| | | | | | - Daniil Bratashov
- Saratov State University Astrakhanskaya Str. 83 Saratov 410012 Russia
| | - Valery V Tuchin
- Saratov State University Astrakhanskaya Str. 83 Saratov 410012 Russia
| | - Chia-Liang Cheng
- Department of Physics, National Dong Hwa University 97401 Taiwan
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Suzuki Y, Arakida Y, Sakai H, Enoki Y, Matsumoto K, Taguchi K. Elucidating the binding properties of methemoglobin in red blood cell to cyanide, hydrosulfide, and azide ions using artificial red blood cell. Toxicol Appl Pharmacol 2023; 481:116752. [PMID: 37956930 DOI: 10.1016/j.taap.2023.116752] [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: 10/07/2023] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
Methemoglobin (metHb), the oxidized form of hemoglobin, lacks the ability of reversible oxygen binding; however, it has a high binding affinity to toxic substances such as cyanide, hydrosulfide, and azide. This innate property of metHb offers the clinical option to treat patients poisoned with these toxins, by oxidizing the endogenous hemoglobin in the red blood cells (RBCs). The binding properties of naked metHb (isolated from RBC) with these toxins has been studied; however, the binding behaviors of metHb under the intracellular conditions of RBC are unclear because of the difficulty in detecting metHb status changes in RBC. This study aimed to elucidate the binding properties of metHb in RBC under physiological and poisoned conditions using artificial RBC, which was hemoglobin encapsulated in a liposome. The mimic-circumstances of metHb in RBC (metHb-V) was prepared by oxidizing the hemoglobin in artificial RBC. Spectroscopic analysis indicated that the metHb in metHb-V exhibited a binding behavior different from that of naked metHb, depending on the toxic substance: When the pH decreased, (i) the cyanide binding affinity of metHb-V remained unchanged, but that of naked metHb decreased (ii) the hydrosulfide binding affinity was increased in metHb-V but was decreased in naked metHb. (iii) Azide binding was increased in metHb-V, which was similar to that in naked metHb, irrespective of the pH change. Thus, the binding behavior of intracellular metHb in the RBC with cyanide, hydrosulfide, and azide under physiological and pathological conditions were partly elucidated using the oxidized artificial RBC.
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Affiliation(s)
- Yuto Suzuki
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Yo Arakida
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Hiromi Sakai
- Department of Chemistry, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan
| | - Yuki Enoki
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kazuaki Matsumoto
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kazuaki Taguchi
- Division of Pharmacodynamics, Keio University Faculty of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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Doltchinkova V, Lozanova S, Rukova B, Nikolov R, Ivanova E, Roumenin C. Electrokinetic properties of healthy and β-thalassemia erythrocyte membranes under in vitro exposure to static magnetic field. Front Chem 2023; 11:1197210. [PMID: 37927566 PMCID: PMC10620691 DOI: 10.3389/fchem.2023.1197210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 09/18/2023] [Indexed: 11/07/2023] Open
Abstract
Introduction: The current understanding of the biological impacts of a static magnetic field (SMF) is restricted to the direct interactions of the magnetic field with biological membranes. The electrokinetic (zeta) potential is an electrochemical property of erythrocyte surfaces which was negatively charged in physiological media after SMF exposure (0.1‒2.0 T). Methods: The novel data about electrokinetic parameters of the erythrocytes is determined by microelectrophoresis after SMF-exposure in norm and heterozygous β-thalassemia. The methods of light scattering, lipid peroxidation, fluorescence microscopy are used. Results: The electrokinetic potential of erythrocytes in norm is increased after SMF intensities due to enhanced negatively exposed charges on the outer surface of the membrane accompanied by an increase in light scattering where changes in cell morphology are observed. Conversely, a decrease in the zeta potential of β-thalassemia erythrocytes upon SMF-treatment was determined because of the reduction in the surface electrical charge of the membranes, where a significant decrease in light scattering at 1.5 T and 2.0 T was recorded. Exposure to SMF (0.5-2.0 T) was associated with an increase in the malondialdehyde content in erythrocytes. Biophysical studies regarding the influence of SMF on the electrostatic free energy of cells shows an increase in negative values in healthy erythrocytes, which corresponds to the implementation of a spontaneous process. This is also the process in β-thalassemia cells after SMF exposure with lower negative values of free electrostatic energy than erythrocytes in norm. Discussion: The effect of static magnetic field (SMF 0.1-2.0 T) on the electrokinetic and morphological characteristics of erythrocytes in norm and β-thalassemia is determined and correlated with the increase/reduction in surface charge and shrinkage/swelling of the cells, respectively. Lipid peroxidation of healthy and β-thalassemia erythrocytes caused an enhancement of lipid peroxidation because of the higher concentrations of TBARS products in cellular suspension. SMF (0.1‒2.0 T) altered the spontaneous chemical processes with negative values of electrostatic free energy of erythrocytes in norm and β-thalassemia accompanied by a lower FITC-Concanavalin A binding affinity to membrane receptors (SMF 2.0 T). The electrokinetic properties of human erythrocytes in norm and β-thalassemia upon SMF treatment and their interrelationship with the structural-functional state of the membrane were reported. The presented work would have future fundamental applications in biomedicine.
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Affiliation(s)
- Virjinia Doltchinkova
- Department of Biophysics and Radiobiology, Faculty of Biology, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Siya Lozanova
- Institute of Robotics “St. Ap. and Gospeller Matthew”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Blaga Rukova
- Department of Medical Genetics, Medical University of Sofia, Sofia, Bulgaria
| | - Rumin Nikolov
- Faculty of Mechanical Engineering, Technical University, Sofia, Bulgaria
| | - Elitsa Ivanova
- Department of Biophysics and Radiobiology, Faculty of Biology, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Chavdar Roumenin
- Institute of Robotics “St. Ap. and Gospeller Matthew”, Bulgarian Academy of Sciences, Sofia, Bulgaria
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Zając M, Kotyńska J, Zambrowski G, Breczko J, Deptuła P, Cieśluk M, Zambrzycka M, Święcicka I, Bucki R, Naumowicz M. Exposure to polystyrene nanoparticles leads to changes in the zeta potential of bacterial cells. Sci Rep 2023; 13:9552. [PMID: 37308531 DOI: 10.1038/s41598-023-36603-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/07/2023] [Indexed: 06/14/2023] Open
Abstract
Polymer molecules, the main components of plastics, are an emerging pollutants in various environmental compartments (water, air, soil) that may induce several ecotoxicological effects on live organisms. Therefore, understanding how plastic particles interact with bacterial cell membranes is crucial in analysing their associated risks in ecosystems and human microbiota. However, relatively little is known about the interaction between nanoplastics and bacteria. The present work focuses on Staphylococcus aureus and Klebsiella pneumoniae, representing the Gram-positive and Gram-negative bacteria respectively, exposed to 100 nm diameter polystyrene nanoparticles (PS NPs). The nanoparticles attach to the cells' membranes of both bacteria, changing their electrical charge, but without the effect of killing the cells. PS NPs caused a change in zeta potential values (both species of bacterial strains), dependent on particle concentration, pH, as well as on exposure time of bacteria to them. Through the application of AFM and FTIR techniques, the presence of PS NPs on bacterial surfaces was detected, suggesting the affinity of the particles to bacterial components, but without any changes in the morphology of the tested bacteria. The zeta potential can be more widely used in the study of interactions between nanostructures and cells.
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Affiliation(s)
- Marcin Zając
- Doctoral School of Exact and Natural Sciences, University of Bialystok, 1K K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Joanna Kotyńska
- Laboratory of Bioelectrochemistry, Department of Physical Chemistry, Faculty of Chemistry, University of Bialystok, 1K K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Grzegorz Zambrowski
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 1J K. Ciolkowski Str., 15-245, Białystok, Poland
- Laboratory of Applied Microbiology, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 1J K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Joanna Breczko
- Laboratory of Materials Chemistry, Department of Physical Chemistry, Faculty of Chemistry, University of Bialystok, 1K K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Piotr Deptuła
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, 2C A. Mickiewicz Str., 15-222, Białystok, Poland
| | - Mateusz Cieśluk
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, 2C A. Mickiewicz Str., 15-222, Białystok, Poland
| | - Monika Zambrzycka
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 1J K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Izabela Święcicka
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 1J K. Ciolkowski Str., 15-245, Białystok, Poland
- Laboratory of Applied Microbiology, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, 1J K. Ciolkowski Str., 15-245, Białystok, Poland
| | - Robert Bucki
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, 2C A. Mickiewicz Str., 15-222, Białystok, Poland
| | - Monika Naumowicz
- Laboratory of Bioelectrochemistry, Department of Physical Chemistry, Faculty of Chemistry, University of Bialystok, 1K K. Ciolkowski Str., 15-245, Białystok, Poland.
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Moezzi SMI, Javadi P, Mozafari N, Ashrafi H, Azadi A. Metformin-loaded nanoerythrosomes: An erythrocyte-based drug delivery system as a therapeutic tool for glioma. Heliyon 2023; 9:e17082. [PMID: 37484272 PMCID: PMC10361227 DOI: 10.1016/j.heliyon.2023.e17082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 07/25/2023] Open
Abstract
Glioma is an intra-cranial malignancy with the origin of neural stem cells or precursor cells, the most prevalent brain tumor worldwide. Glioblastoma, the fourth-grade glioma, is a common brain tumor whose incidence rate is 5-7 people per 100,000 populations annually. Despite their high mortality rate, all efforts for treatment have yet to achieve any desirable clinical outcome. The Wnt signaling pathway is a conserved pathway among species that seems to be a candidate for cancer therapy by its inhibition. Metformin is a known inhibitor of the Wnt signaling pathway. Its effects on glioma treatment have been observed in cellular, animal, and clinical experiments. Nanoerythrosomes are drug carriers obtained from the cellular membrane of red blood cells in nano size which can offer several characteristics to deliver metformin to brain tumors. They are good at loading and carrying hydrophilic drugs, they can protect metformin from its metabolizing enzymes, which are present in the blood-brain barrier, and they can extend the period of metformin presence in circulation. In this study, nanoerythrosomes were prepared by using the hypotonic buffer. They had particle sizes in the range of 97.1 ± 34.2 nm, and their loading efficiency and loading capacity were 72.6% and 1.66%, respectively. Nanoerythrosomes could reserve metformin in their structure for a long time, and only 50% of metformin was released after 30 h. Moreover, they released metformin at a low and approximately constant rate. Besides, nanoerythrosomes could tolerate various kinds of stress and maintain most of the drug in their structure. Altogether, nanoerythrosome can be a suitable drug delivery system to deliver therapeutic amounts of metformin to various tissues.
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Affiliation(s)
- Seyed Mohammad Iman Moezzi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Parisa Javadi
- Department of Nanomedicine, School of Novel Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negin Mozafari
- Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hajar Ashrafi
- Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Azadi
- Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Marin-Silva DA, Romano N, Damonte L, Giannuzzi L, Pinotti A. Hybrid materials based on chitosan functionalized with green synthesized copper nanoparticles: Physico-chemical and antimicrobial analysis. Int J Biol Macromol 2023; 242:124898. [PMID: 37207748 DOI: 10.1016/j.ijbiomac.2023.124898] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/09/2023] [Accepted: 05/12/2023] [Indexed: 05/21/2023]
Abstract
Recently, the development of materials with antimicrobial properties has become a challenge under scrutiny. The incorporation of copper nanoparticles (NpCu) into a chitosan matrix appears to represent a viable strategy to contain the particles and prevent their oxidation. Regarding the physical properties, the nanocomposite films (CHCu) showed a decrease in the elongation at break (5 %) and an increase in the tensile strength of 10 % concerning chitosan films (control). They also showed solubility values lower than 5 % while the swelling diminished by 50 %, on average. The dynamical mechanical analysis (DMA) of nanocomposites revealed two thermal events located at 113° and 178 °C, which matched the glass transitions of the CH-enriched phase and nanoparticles-enriched phase, respectively. In addition, the thermogravimetric analysis (TGA) detected a greater stability of the nanocomposites. Chitosan films and the NpCu-loaded nanocomposites demonstrated excellent antibacterial capacity against Gram-negative and Gram-positive bacteria, proved through diffusion disc, zeta potential, and ATR-FTIR techniques. Additionally, the penetration of individual NpCu particles into bacterial cells and the leakage of cell content were verified by TEM. The mechanism of the antibacterial activity of the nanocomposites involved the interaction of chitosan with the bacterial outer membrane or cell wall and the diffusion of the NpCu through the cells. These materials could be applied in diverse fields of biology, medicine, or food packaging.
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Affiliation(s)
- Diego Alejandro Marin-Silva
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina
| | - Nelson Romano
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina
| | - Laura Damonte
- Dto. de Física, UNLP-IFLP, CCT-CONICET La Plata, Argentina; Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
| | - Leda Giannuzzi
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina; Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
| | - Adriana Pinotti
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina; Facultad de Ingeniería, UNLP, La Plata, Argentina.
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9
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Pozy E, Savla C, Palmer AF. Photocatalytic Synthesis of a Polydopamine-Coated Acellular Mega-Hemoglobin as a Potential Oxygen Therapeutic with Antioxidant Properties. Biomacromolecules 2023; 24:2022-2029. [PMID: 37027799 DOI: 10.1021/acs.biomac.2c01420] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
Hemoglobin-based oxygen carriers (HBOCs) are being developed to overcome limitations associated with transfusion of donated red blood cells (RBCs) such as potential transmission of blood-borne pathogens and limited ex vivo storage shelf-life. Annelid erythrocruorin (Ec) derived from the worm Lumbricus terrestris (Lt) is an acellular mega-hemoglobin that has shown promise as a potential HBOC due to the large size of its oligomeric structure, thus overcoming limitations of unmodified circulating cell-free hemoglobin (Hb). With a large molecular weight of 3.6 MDa compared to 64.5 kDa for human Hb (hHb) and 144 oxygen-binding globin subunits compared to the 4 globin subunits of hHb, LtEc does not extravasate from the circulation to the same extent as hHb. LtEc is stable in the circulation without RBC membrane encapsulation and has a lower rate of auto-oxidation compared to acellular hHb, which allows the protein to remain functional for longer periods of time in the circulation compared to HBOCs derived from mammalian Hbs. Surface coatings, such as poly(ethylene glycol) (PEG) and oxidized dextran (Odex), have been investigated to potentially reduce the immune response and improve the circulation time of LtEc in vivo. Polydopamine (PDA) is a hydrophilic, biocompatible, bioinspired polymer coating used for biomedical nanoparticle assemblies and coatings and has previously been investigated for the surface coating of hHb. PDA is typically synthesized via the self-polymerization of dopamine (DA) under alkaline (pH > 8.0) conditions. However, at pH > 8.0, the oligomeric structure of LtEc begins to dissociate. Therefore, in this study, we investigated a photocatalytic method of PDA polymerization on the surface of LtEc using 9-mesityl-10-methylacridinium tetrafluoroborate (Acr-Mes) to drive PDA polymerization under physiological conditions (pH 7.4, 25 °C) over 2, 5, and 16 h in order to preserve the size and structure of LtEc. The resulting structural, biophysical, and antioxidant properties of PDA surface-coated LtEc (PDA-LtEc) was characterized using various techniques. PDA-LtEc showed an increase in measured particle size, molecular weight, and surface ζ-potential with increasing reaction time from t = 2 to 16 h compared to unmodified LtEc. PDA-LtEc reacted for 16 h was found to have reduced oxygen-binding cooperativity and slower deoxygenation kinetics compared to PDA-LtEc with lower levels of polymerization (t = 2 h), but there was no statistically significant difference in oxygen affinity. The thickness of the PDA coating can be controlled and in turn the biophysical properties can be tuned by changing various reaction conditions. PDA-LtEc was shown to demonstrate an increased level of antioxidant capacity (ferric iron reduction and free-radical scavenging) when synthesized at a reaction time of t = 16 h compared to LtEc. These antioxidant properties may prove beneficial for oxidative protection of PDA-LtEc during its time in the circulation. Hence, we believe that PDA-LtEc is a promising oxygen therapeutic for potential use in transfusion medicine applications.
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Affiliation(s)
- Ethan Pozy
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chintan Savla
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 452 CBEC, 151 West Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Andre F Palmer
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 452 CBEC, 151 West Woodruff Avenue, Columbus, Ohio 43210, United States
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10
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Funk RHW, Scholkmann F. The significance of bioelectricity on all levels of organization of an organism. Part 1: From the subcellular level to cells. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2023; 177:185-201. [PMID: 36481271 DOI: 10.1016/j.pbiomolbio.2022.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/24/2022] [Accepted: 12/03/2022] [Indexed: 12/12/2022]
Abstract
Bioelectricity plays an essential role in the structural and functional organization of biological organisms. In this first article of our three-part series, we summarize the importance of bioelectricity for the basic structural level of biological organization, i.e. from the subcellular level (charges, ion channels, molecules and cell organelles) to cells.
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Affiliation(s)
- Richard H W Funk
- Institute of Anatomy, Center for Theoretical Medicine, TU-Dresden, 01307, Dresden, Germany; Dresden International University, 01067, Dresden, Germany.
| | - Felix Scholkmann
- Biomedical Optics Research Laboratory, Department of Neonatology, University Hospital Zurich, University of Zurich, 8091, Zurich, Switzerland.
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New antimicrobial peptide-antibiotic combination strategy for Pseudomonas aeruginosa inactivation. Biointerphases 2022; 17:041002. [PMID: 35922283 DOI: 10.1116/6.0001981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Novel antimicrobials or new treatment strategies are urgently needed to treat Pseudomonas aeruginosa (P. aeruginosa) related infections and especially to address the problem of antibiotic resistance. We propose a novel strategy that combines the human antimicrobial peptide (AMP) LL37 with different antibiotics to find synergistic AMP-antibiotic combinations against P. aeruginosa strains in vitro. Our results showed that LL37 exhibited synergistic inhibitory and bactericidal effects against P. aeruginosa strains PAO1 and PA103 when combined with the antibiotics vancomycin, azithromycin, polymyxin B, and colistin. In addition, LL37 caused strong outer membrane permeabilization, as demonstrated through measurement of an increased uptake of the fluorescent probe N-phenyl-1-naphthylamine. The membrane permeabilization effects appear to explain why it was easier to rescue the effectiveness of the antibiotic toward the bacteria because the outer membrane of P. aeruginosa exhibits barrier function for antibiotics. Furthermore, the change in the zeta potential was measured for P. aeruginosa strains with the addition of LL37. Zeta potentials for P. aeruginosa strains PAO1 and PA103 were -40.9 and -10.9 mV, respectively. With the addition of LL37, negative zeta potentials were gradually neutralized. We found that positively charged LL37 can interact with and neutralize the negatively charged bacterial outer membrane through electrostatic interactions, and the process of neutralization is believed to have contributed to the increase in outer membrane permeability. Finally, to further illustrate the relationship between outer membrane permeabilization and the uptake of antibiotics, we used LL37 to make the outer membrane of P. aeruginosa strains more permeable, and minimum inhibitory concentrations (MICs) for several antibiotics (colistin, gentamicin, polymyxin B, vancomycin, and azithromycin) were measured. The MICs decreased were twofold to fourfold, in general. For example, the MICs of azithromycin and vancomycin decreased more than fourfold when against P. aeruginosa strain PAO1, which were the greatest decrease of any of the antibiotics tested in this experiment. As for PA103, the MIC of polymyxin B2 decreased fourfold, which was the strongest decrease seen for any of the antibiotics tested in this experiment. The increased uptake of antibiotics not only demonstrates the barrier role of the outer membrane but also validates the mechanism of synergistic effects that we have proposed. These results indicate the great potential of an LL37-antibiotic combination strategy and provide possible explanations for the mechanisms behind this synergy.
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Kanemaki M, Shimizu HO, Inujima H, Miyake T, Shimizu K. Analysis of Red Blood Cell Movement in Whole Blood Exposed to DC and ELF Electric Fields. Bioelectromagnetics 2022; 43:149-159. [PMID: 35315542 PMCID: PMC9313574 DOI: 10.1002/bem.22395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 01/19/2022] [Accepted: 02/04/2022] [Indexed: 11/09/2022]
Abstract
To evaluate hematological effects of direct current (DC) and alternating current (AC) extremely low frequency (ELF) electric field exposure, this study investigated red blood cell (RBC) movement in whole blood. Video images of RBCs were recorded under a microscope using specially designed electrode systems. Video analysis software was then used to measure the RBC velocity. The noise level and measurement system stability were confirmed based on results of a no-field exposure experiment. Using the electrode system to produce a non-homogeneous electric field, different movements were found to occur in DC and AC field exposure. The RBCs moved in the directions of the electric field and the gradient of field distribution, respectively, in the DC and AC fields. Dependences of the RBC velocity on the field strength were, respectively, linear and quadratic in the DC and AC fields. These results suggest that electrophoretic and dielectrophoretic movements were, respectively, dominant in the DC and AC fields. The magnitude of the electric field necessary to cause these effects was found to be 103 -105 times greater than the internationally publicized guideline for human safety. © 2022 Bioelectromagnetics Society.
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Affiliation(s)
- Miki Kanemaki
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Hisae O Shimizu
- Graduate School of Health Science, Hokkaido University of Science, Sapporo, Japan
| | - Hiroshi Inujima
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Takeo Miyake
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
| | - Koichi Shimizu
- Graduate School of Information, Production and Systems, Waseda University, Kitakyushu, Japan
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13
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Caimi G, Urso C, Brucculeri S, Amato C, Lo Presti R, Carlisi M. Uric acid and uric acid/creatinine ratio and their correlations with the hemorheological determinants in subjects with subclinical carotid atherosclerosis. Clin Hemorheol Microcirc 2022; 81:47-55. [PMID: 35001880 DOI: 10.3233/ch-211322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVE we have examined the concentration of serum uric acid and the serum uric acid/creatinine ratio as well as their correlations with the main determinants of the hemorheological profile in a group of subjects with subclinical carotid atherosclerosis. METHODS we evaluated the concentration of serum uric acid and the serum uric acid/creatine ratio in 43 men and 57 women [median age 66.00 (25)] with subclinical carotid atherosclerosis, subsequently divided according to the number of traditional cardiovascular risk factors and to the insulin resistance degree. RESULTS serum uric acid, but not the serum uric acid/creatinine ratio, results strongly influenced by the number of cardiovascular risk factors and by the insulin resistance degree. In the whole group and in the subgroups of subclinical carotid atherosclerosis subjects, serum uric acid and serum uric acid/creatinine ratio show significant correlation, besides with whole blood viscosity, with plasma viscosity and erythrocyte aggregation. The influence of the serum uric acid on the erythrocyte aggregability that is a part of the erythrocyte aggregation is to ascribe to the action carried out by serum uric acid on the erythrocyte zeta potential. CONCLUSIONS it is reasonable to think that the treatment of the asymptomatic or symptomatic hyperuricemia with the urate-lowering therapy that reduces the serum uric acid concentration may reflect on the hemorheological profile which role on the atherosclerotic cardiovascular disease is well known.
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Affiliation(s)
- Gregorio Caimi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Caterina Urso
- Fondazione Istituto "G. Giglio" Cefalú, Palermo, Italy
| | | | - Corrado Amato
- Department of Health Promotion and Child Care, Internal Medicine and Medical Specialties, Universitá degli Studi di Palermo, Palermo, Italy
| | - Rosalia Lo Presti
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | - Melania Carlisi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
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Kim JY, Shin HI, Lee SE, Piao H, Rejinold SN, Choi G, Choy JH. Artesunate Drug-loaded 2D Nano-shuttle Landing on RBCs Infected with Malaria Parasites. Biomater Sci 2022; 10:5980-5988. [DOI: 10.1039/d2bm00879c] [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
Artesunic acid (AS0), a derivative of artemisinin, is recommended for the treatment of severe and complicated malaria, but its use is limited because of limitations such as short half-life, non-specific...
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15
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Izbicka E, Streeper RT. Adaptive Membrane Fluidity Modulation: A Feedback Regulated Homeostatic System Hiding in Plain Sight. In Vivo 2021; 35:2991-3000. [PMID: 34697130 PMCID: PMC8627736 DOI: 10.21873/invivo.12594] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 11/10/2022]
Abstract
The structure of the plasma membrane affects its function. Changes in membrane fluidity with concomitant effects on membrane protein activities and cellular communication often accompany the transition from a healthy to a diseased state. Although deliberate modulation of membrane fluidity with drugs has not been exploited to date, the latest data suggest the "druggability" of the membrane. Azelaic acid esters (azelates) modulate plasma membrane fluidity and exhibit a broad range of immunomodulatory effects in vitro and in vivo. Azelates represent a new class of drugs, membrane active immunomodulators (MAIMs), which use the entire plasma membrane as the target, altering the dynamics of an innate feedback regulated homeostatic system, adaptive membrane fluidity modulation (AMFM). A review of the literature data spanning >200 years supports the notion that molecules in the MAIMs category including known drugs do exert immunomodulatory effects that have been either neglected or dismissed as off-target effects.
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Araújo Lima EMD, Holanda VN, Ratkovski GP, Silva WVD, Nascimento PHD, Figueiredo RCBQD, de Melo CP. A new biocompatible silver/polypyrrole composite with in vitro antitumor activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112314. [PMID: 34474865 DOI: 10.1016/j.msec.2021.112314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/30/2021] [Accepted: 07/07/2021] [Indexed: 12/01/2022]
Abstract
We used an in situ chemical oxidation method to prepare a new composite of silver nanoparticles (AgNPs) with polypyrrole (PPy), whose properties were optimized through a 23-factorial design of the synthesis conditions. The successful formation of the AgNPs/PPy composite was confirmed by UV-Visible and FTIR spectroscopies. Transmission electron microscopy revealed the presence of AgNPs smaller than 100 nm, dispersed into the PPy matrix. This hybrid composite exhibits a blue fluorescence emission after excitation in the ultraviolet region. In MTT assays, the AgNPs/PPy composite exhibited low cytotoxicity toward non-tumoral cell lines (fibroblast, Vero, and macrophages) and selectively inhibited the viability of HeLa cells. The AgNPs/PPy composite induces ultrastructural changes in HeLa cells that are consistent with the noticeable selectivity exhibited toward them when compared to its action against non-tumoral cell lineages. Also, the AgNPs/PPy exhibited a hemolytic activity below 14% for all blood groups tested, at concentrations up to 125 μg/mL. These results suggest that the AgNPs/PPy composite has a promising potential for use as an antitumoral agent.
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Affiliation(s)
- Elton Marlon de Araújo Lima
- Pós-graduação em Ciência de Materiais, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil; Laboratório de Biologia Celular de Patógenos, Instituto Aggeu Magalhães, Departamento de Microbiologia, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, Pernambuco, Brazil; Departamento de Física, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Vanderlan Nogueira Holanda
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, PE, Brazil; Laboratório de Biologia Celular de Patógenos, Instituto Aggeu Magalhães, Departamento de Microbiologia, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, Pernambuco, Brazil
| | - Gabriela Plautz Ratkovski
- Pós-graduação em Física, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil; Departamento de Física, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Welson Vicente da Silva
- Laboratório de Biologia Celular de Patógenos, Instituto Aggeu Magalhães, Departamento de Microbiologia, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, Pernambuco, Brazil
| | - Pedro Henrique do Nascimento
- Laboratório de Biologia Celular de Patógenos, Instituto Aggeu Magalhães, Departamento de Microbiologia, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, Pernambuco, Brazil
| | - Regina Celia Bressan Queiroz de Figueiredo
- Laboratório de Biologia Celular de Patógenos, Instituto Aggeu Magalhães, Departamento de Microbiologia, Avenida Professor Moraes Rego, 1235, 50670-901 Recife, Pernambuco, Brazil
| | - Celso Pinto de Melo
- Pós-graduação em Ciência de Materiais, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil; Departamento de Física, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil.
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Zhang M, Cui Z, Wang Y, Ma W, Ji Y, Ye F, Feng Y, Liu C. Effects of sub-lethal antimicrobial photodynamic therapy mediated by haematoporphyrin monomethyl ether on polymyxin-resistant Escherichia coli clinical isolate. Photodiagnosis Photodyn Ther 2021; 36:102516. [PMID: 34469794 DOI: 10.1016/j.pdpdt.2021.102516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/20/2021] [Accepted: 08/27/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND AIM It is generally believed that bacteria can not develop resistance to antimicrobial photodynamic therapy (aPDT). This work employed a polymyxin-resistant Escherichia coli clinical isolate (E15017) to study whether it could become resistant to aPDT mediated by haematoporphyrin monomethyl ether (HMME) via consecutive photodynamic treatments at sub-lethal condition. METHODS The sub-lethal and lethal photodynamic treatment conditions for E15017 were determined by colony forming units (CFU) assay. Bacterial cells of E15017 were treated with 20 cycles of repeated sub-lethal HMME-mediated aPDT, and subsequently subjected to aPDT at lethal condition. The antibiotic susceptibility, zeta-potential and membrane integrity of sub-lethal aPDT treated E15017 cells were also investigated. RESULTS After 20 cycles of repeated HMME-mediated aPDT treatments at sub-lethal condition, E15017 cells didn't become more resistant to aPDT. Sub-lethal HMME-mediated aPDT decreased the MIC values of E15017 to ceftazidime and polymyxin E by 4 and 2-fold, respectively, and increased the electronegativity of bacterial surface and affected the bacterial membrane integrity. CONCLUSIONS The results obtained in this study confirmed that antibiotic-resistant bacteria could not develop resistance to aPDT, and HMME-mediated aPDT is an attractive potential treatment for MDR E. coli caused infections.
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Affiliation(s)
- Miaomiao Zhang
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, PR China
| | - Zixin Cui
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, PR China; Department of Infection, The First Affiliated Hospital of College of Medicine, Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, 710061, PR China
| | - Yanli Wang
- The First Hospital of Weinan, 35 East Shengli Street, Weinan, 714000, PR China
| | - Wenpeng Ma
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, PR China
| | - Yanhong Ji
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, PR China
| | - Feng Ye
- Department of Infection, The First Affiliated Hospital of College of Medicine, Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, 710061, PR China
| | - Youjun Feng
- Department of Pathogen Biology & Microbiology, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, 310058, PR China.
| | - Chengcheng Liu
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an, 710061, PR China.
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18
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Farber PL, Isoldi FC, Ferreira LM. Electric Factors in Wound Healing. Adv Wound Care (New Rochelle) 2021; 10:461-476. [PMID: 32870772 DOI: 10.1089/wound.2019.1114] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Significance: Electric factors such as electric charges, electrodynamic field, skin battery, and interstitial exclusion permeate wound healing physiology and physiopathology from injury to re-epithelialization. The understanding of how electric factors contribute to wound healing and how treatments may interfere with them is fundamental for the development of better strategies for the management of pathological scarring and chronic wounds. Recent Advances: Angiogenesis, cell migration, macrophage activation hemorheology, and microcirculation can interfere and be interfered with electric factors. New treatments with various types of electric currents, laser, light emitting diode, acupuncture, and weak electric fields applied directly on the wound have been developed to improve wound healing. Critical Issues: Despite the basic and clinical development, pathological scars such as keloids and chronic wounds are still a challenge. Future Directions: New treatments can be developed to improve skin wound healing taking into account the influence of electrical charges. Monitoring electrical activity during skin healing and the influence of treatments on hemorheology and microcirculation are examples of how to use knowledge of electrical factors to increase their effectiveness.
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Affiliation(s)
| | - Felipe Contoli Isoldi
- Surgery Department, Plastic Surgery Division, Postgraduated Program in Translational Surgery, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Lydia Masako Ferreira
- Surgery Department, Plastic Surgery Division, Postgraduated Program in Translational Surgery, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
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Suzuki Y, Taguchi K, Kure T, Sakai H, Enoki Y, Otagiri M, Matsumoto K. Liposome-encapsulated methemoglobin as an antidote against cyanide poisoning. J Control Release 2021; 337:59-70. [PMID: 34273418 DOI: 10.1016/j.jconrel.2021.07.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022]
Abstract
Cyanide induces acute lethal poisoning resulting from inhibition of cytochrome c oxidase located in the complex IV (Complex IV) of mitochondria. However, current therapies for cyanide poisoning using hydroxocobalamin and nitrous acid compounds remain a clinical issue. Here, we show that liposome-encapsulated methemoglobin (metHb@Lipo), nanosized biomimetic red blood cells, replicate the antidotal mechanism of nitrous acid compounds against cyanide poisoning, achieving superior efficacy and fast action with no adverse effects. The structure of metHb@Lipo, which consists of concentrated methemoglobin in its aqueous core and a lipid membrane resembling the red blood cell membrane, provides favorable characteristics as a cyanide antidote, such as binding properties and membrane permeability. Upon cyanide exposure, metHb@Lipo maintained the mitochondrial function in PC12 cells, resulting in a cell viability comparable to treatment with nitrous acid compounds. In a mouse model of cyanide poisoning, metHb@Lipo treatment dramatically improved mortality with a rapid recovery from the symptoms of cyanide poisoning compared to treatment with nitrous acid compounds. Furthermore, metHb@Lipo also possesses satisfactory pharmacokinetic properties without long-term bioaccumulation and toxicity. Our findings showed a novel concept to develop drugs for cyanide poisoning and provide a promising possibility for biomimetic red blood cell preparations for pharmaceutical applications.
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Affiliation(s)
- Yuto Suzuki
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kazuaki Taguchi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Tomoko Kure
- Department of Chemistry, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan
| | - Hiromi Sakai
- Department of Chemistry, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan
| | - Yuki Enoki
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto City, Kumamoto 860-0082, Japan; DDS Research Institute, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto City, Kumamoto 860-0082, Japan
| | - Kazuaki Matsumoto
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
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Zieba W, Czarnecka J, Rusak T, Zieba M, Terzyk AP. Nitric-Acid Oxidized Single-Walled Carbon Nanohorns as a Potential Material for Bio-Applications-Toxicity and Hemocompatibility Studies. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1419. [PMID: 33804062 PMCID: PMC8002155 DOI: 10.3390/ma14061419] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/17/2021] [Accepted: 03/09/2021] [Indexed: 01/23/2023]
Abstract
The results of in vitro studies of single-walled carbon nanohorn (SWCNH) oxidized materials' cytotoxicity obtained by the cell membrane integrity (Neutral Red Uptake (NRU)) and metabolic activity (by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)) on A549 and human dermal fibroblasts (HDF) cell lines are presented. We also present hemocompatibility studies on human and porcine blood, and an erythrocyte concentrate to prove that the obtained samples will not interfere with blood components. Characterization of the materials is supplemented by ζ-potential measurements, Transmission Electron Microscope (TEM) imaging, and thermogravimetric studies (TG). The presented results show the correlation between the specific surface area of materials and the platelet aggregation, when the ID/IG ratio determined from Raman spectra correlates with hemoglobin release from the erythrocytes (in whole blood testing). A plausible mechanism explaining the observed correlations is given. The cytotoxicity and hemocompatibility studies prove that the studied materials are acceptable for use in biomedical applications, especially a sample SWCNH-ox-1.5 with the best application potential.
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Affiliation(s)
- Wojciech Zieba
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland; (W.Z.); (M.Z.)
| | - Joanna Czarnecka
- Department of Biochemistry, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Lwowska Street 1, 87-100 Torun, Poland;
| | - Tomasz Rusak
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Bialystok, Kilinskiego Street 1, 15-328 Bialystok, Poland;
| | - Monika Zieba
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland; (W.Z.); (M.Z.)
| | - Artur P. Terzyk
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland; (W.Z.); (M.Z.)
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Zeta potential beyond materials science: Applications to bacterial systems and to the development of novel antimicrobials. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1863:183597. [PMID: 33652005 DOI: 10.1016/j.bbamem.2021.183597] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 01/17/2023]
Abstract
This review summarizes the theory of zeta potential (ZP) and the most relevant data about how it has been used for studying bacteria. We have especially focused on the discovery and characterization of novel antimicrobial compounds. The ZP technique may be considered an indirect tool to estimate the surface potential of bacteria, a physical characteristic that is key to maintaining optimal cell function. For this reason, targeting the bacterial surface is of paramount interest in the development of new antimicrobials. Surface-acting agents have been found to display a remarkable bactericidal effect and have simultaneously revealed a low tendency to trigger resistance. Changes in the bacterial surface as a result of various processes can also be followed by ZP measurements. However, due to the complexity of the bacterial surface, some considerations regarding the assessment of ZP must first be taken into account. Evidence on the application of ZP measurements to the characterization of bacteria and biofilm formation is presented next. We finally discuss the feasibility of using the ZP technique to assess antimicrobial-induced changes in the bacterial surface. Among these changes are those related to the interaction of the agent with different components of the cell envelope, membrane permeabilization, and loss of viability.
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Leitner S, Solans C, García-Celma MJ, Morral-Ruíz G, Melgar-Lesmes P, Calderó G. Ethylcellulose nanoparticles prepared from nano-emulsion templates as new folate binding haemocompatible platforms. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111682. [PMID: 33545844 DOI: 10.1016/j.msec.2020.111682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 11/29/2022]
Abstract
Ethylcellulose is a biocompatible polymer attracting increasing interest for biomedical applications. In the present work, the formation of folate-ethylcellulose nanoparticle complexes from nano-emulsion templates prepared by a low-energy approach, using aqueous components suitable for biomedical applications has been investigated. The composition of the aqueous component is shown to be crucial for the formation of stable nano-emulsions and influences the zeta potential values. The ethylcellulose nanoparticles with mean sizes around 100 nm were obtained from the nano-emulsions by solvent evaporation and showed positive zeta potential values above +20 mV due to the presence of the cationic surfactant. The nanoparticles were successfully complexed with folate, as evidenced by both particle size and zeta potential measurements. The complexes prepared with HEPES buffered glucose solution showed excellent haemocompatibility, which make them promising for parenteral therapeutic applications and also for those in which easy access to systemic circulation may occur, like in lungs.
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Affiliation(s)
- Stefanie Leitner
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - Conxita Solans
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - María José García-Celma
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Genoveva Morral-Ruíz
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Pedro Melgar-Lesmes
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Gabriela Calderó
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain; Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain.
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Ricaurte-Contreras LA, Lovera A, Moreno-Pérez DA, Bohórquez MD, Suárez CF, Gutiérrez-Vásquez E, Cuy-Chaparro L, Garzón-Ospina D, Patarroyo MA. Two 20-Residue-Long Peptides Derived from Plasmodium vivax Merozoite Surface Protein 10 EGF-Like Domains Are Involved in Binding to Human Reticulocytes. Int J Mol Sci 2021; 22:ijms22041609. [PMID: 33562650 PMCID: PMC7915351 DOI: 10.3390/ijms22041609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/21/2021] [Accepted: 02/02/2021] [Indexed: 11/30/2022] Open
Abstract
Plasmodium parasites’ invasion of their target cells is a complex, multi-step process involving many protein-protein interactions. Little is known about how complex the interaction with target cells is in Plasmodium vivax and few surface molecules related to reticulocytes’ adhesion have been described to date. Natural selection, functional and structural analysis were carried out on the previously described vaccine candidate P. vivax merozoite surface protein 10 (PvMSP10) for evaluating its role during initial contact with target cells. It has been shown here that the recombinant carboxyl terminal region (rPvMSP10-C) bound to adult human reticulocytes but not to normocytes, as validated by two different protein-cell interaction assays. Particularly interesting was the fact that two 20-residue-long regions (388DKEECRCRANYMPDDSVDYF407 and 415KDCSKENGNCDVNAECSIDK434) were able to inhibit rPvMSP10-C binding to reticulocytes and rosette formation using enriched target cells. These peptides were derived from PvMSP10 epidermal growth factor (EGF)-like domains (precisely, from a well-defined electrostatic zone) and consisted of regions having the potential of being B- or T-cell epitopes. These findings provide evidence, for the first time, about the fragments governing PvMSP10 binding to its target cells, thus highlighting the importance of studying them for inclusion in a P. vivax antimalarial vaccine.
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Affiliation(s)
- Laura Alejandra Ricaurte-Contreras
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
- MSc Programme in Microbiology, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Andrea Lovera
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Darwin Andrés Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Michel David Bohórquez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Carlos Fernando Suárez
- Biomathematics Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia;
| | - Elizabeth Gutiérrez-Vásquez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Laura Cuy-Chaparro
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Diego Garzón-Ospina
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
| | - Manuel Alfonso Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; (L.A.R.-C.); (A.L.); (D.A.M.-P.); (M.D.B.); (E.G.-V.); (L.C.-C.); (D.G.-O.)
- Health Sciences Division, Main Campus, Universidad Santo Tomás, Carrera 9#51-11, Bogotá 110231, Colombia
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
- Correspondence:
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24
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Yuan J, Yin WY, Wang Y, Chen J, Zhang ZM, Tang YX, Pei SY, Tan LX, Hu XW, Fan XG, Li N. Cargo-laden erythrocyte ghosts target liver mediated by macrophages. Transfus Apher Sci 2020; 60:102930. [PMID: 32933846 DOI: 10.1016/j.transci.2020.102930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 12/19/2022]
Abstract
Liver-targeted cargo delivery possesses great potential for the treatment of liver disease. It is urgent to find an efficient and biocompatible liver targeted delivery system. This study focused on the liver targeting properties of erythrocyte ghosts and its possible mechanism. Herein, we optimized conditions to fabricate human and mouse erythrocyte ghosts with sufficient room capable of incorporating various model substances. Erythrocyte ghosts are biocompatible cargo carriers because it is derived from autologous red blood cells (RBCs), and the cell size, zeta potential, and biconcave-disk shape of the ghosts were consistent with those of RBCs. An in vivo imaging system and positron emission tomography/computed tomography imaging showed that the ghosts were captured mainly in the liver by intravenous injection of fluorescence or 18F-fluorodeoxyglucose (FDG)-labelled ghosts into mice. In contrast, the main concentration of naked octreotide was trapped in the lungs while naked 18F-FDG was trapped in the heart. However, the concentration of cargo-loaded ghosts decreased significantly in the liver in macrophage-depleted mice. Accordingly, in vitro experiments showed that higher phosphatidylserine exposure was observed in the ghosts (38.9 %) compared to normal erythrocytes (0.69 %), and the phagocytic activity of the macrophage RAW 264.7. on the ghosts was significantly higher than that of normal erythrocytes (p < 0.001). Together they indicate that erythrocyte ghosts show liver targeting properties, and possibly owing to macrophage phagocytosis. This promising and effective therapeutic delivery system may provide therapeutic benefits for liver disease.
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Affiliation(s)
- Jiao Yuan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Wen-Yu Yin
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China
| | - Yang Wang
- Laboratory of Ethnopharmacology Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Jun Chen
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Zhi-Min Zhang
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China
| | - Yong-Xiang Tang
- Department of PET Centre, Xiangya Hospital, Central South University, Changsha, China
| | - Si-Ya Pei
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Lin-Xia Tan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Xing-Wang Hu
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Xue-Gong Fan
- Department of Infectious Diseases and Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Ning Li
- Department of Blood Transfusion, Xiangya Hospital, Central South University, Changsha, China.
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25
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Ghosh R, Malhotra M, Sathe RR, Jayakannan M. Biodegradable Polymer Theranostic Fluorescent Nanoprobe for Direct Visualization and Quantitative Determination of Antimicrobial Activity. Biomacromolecules 2020; 21:2896-2912. [PMID: 32539360 DOI: 10.1021/acs.biomac.0c00653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report a biodegradable fluorescent theranostic nanoprobe design strategy for simultaneous visualization and quantitative determination of antibacterial activity for the treatment of bacterial infections. Cationic-charged polycaprolactone (PCL) was tailor-made through ring-opening polymerization methodology, and it was self-assembled into well-defined tiny 5.0 ± 0.1 nm aqueous nanoparticles (NPs) having a zeta potential of +45 mV. Excellent bactericidal activity at 10.0 ng/mL concentration was accomplished in Gram-negative bacterium Escherichia coli (E. coli) while maintaining their nonhemolytic nature in mice red blood cells (RBC) and their nontoxic trend in wild-type mouse embryonic fibroblast cells with a selectivity index of >104. Electron microscopic studies are evident of the E. coli membrane disruption mechanism by the cationic NP with respect to their high selectivity for antibacterial activity. Anionic biomarker 8-hydroxy-pyrene-1,3,6-trisulfonic acid (HPTS) was loaded in the cationic PCL NP via electrostatic interaction to yield a new fluorescent theranostic nanoprobe to accomplish both therapeutics and diagnostics together in a single nanosystem. The theranostic NP was readily degradable by a bacteria-secreted lipase enzyme as well as by lysosomal esterase enzymes at the intracellular compartments in <12 h and support their suitability for biomedical application. In the absence of bactericidal activity, the theranostic nanoprobe functions exclusively as a biomarker to exhibit strong green-fluorescent signals in live E. coli. Once it became active, the theranostic probe induces membrane disruption on E. coli, which enabled the costaining of nuclei by red fluorescent propidium iodide. As a result, live and dead bacteria could be visualized via green and orange signals (merging of red+green), respectively, during the course of the antibacterial activity by the theranostic probe. This has enabled the development of a new image-based fluorescence assay to directly visualize and quantitatively estimate the real-time antibacterial activity. Time-dependent bactericidal activity was coupled with selective photoexcitation in a confocal microscope to demonstrate the proof-of-concept of the working principle of a theranostic probe in E. coli. This new theranostic nanoprobe creates a new platform for the simultaneous probing and treating of bacterial infections in a single nanodesign, which is very useful for a long-term impact in healthcare applications.
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Mukhopadhyay M, Ray R, Ayushman M, Sood P, Bhattacharyya M, Sarkar D, DasGupta S. Interfacial energy driven distinctive pattern formation during the drying of blood droplets. J Colloid Interface Sci 2020; 573:307-316. [PMID: 32289626 DOI: 10.1016/j.jcis.2020.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 01/26/2023]
Abstract
HYPOTHESIS Dried blood droplet morphology may potentially serve as an alternative biomarker for several patho-physiological conditions. The deviant properties of the red blood cells and the abnormal composition of diseased samples are hypothesized to manifest through unique cell-cell and cell-substrate interactions leading to different morphological patterns. Identifying distinctive morphological trait from a large sample size and proposing confirmatory explanations are necessary to establish the signatory pattern as a potential biomarker to differentiate healthy and diseased samples. EXPERIMENTS Comprehensive experimental investigation was undertaken to identify the signatory dried blood droplet patterns. The corresponding image based analysis was in turn used to differentiate the blood samples with a specific haematological disorder "Thalassaemia" from healthy ones. Relevant theoretical analysis explored the role of cell-surface and cell-cell interactions pertinent to the formation of the distinct dried patterns. FINDINGS The differences observed in the dried blood patterns, specifically the radial crack lengths, were found to eventuate from the differences in the overall interaction energies of the system. A first-generation theoretical analysis, with the mean field approximation, also confirmed similar outcome and justified the role of the different physico-chemical properties of red blood cells in diseased samples resulting in shorter radial cracks.
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Affiliation(s)
- Manikuntala Mukhopadhyay
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Pin 721302 West Bengal, India
| | - Rudra Ray
- Institute of Haematology & Transfusion Medicine, Medical College, Kolkata, Pin 700073 West Bengal, India
| | - Manish Ayushman
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Pin 721302 West Bengal, India
| | - Pourush Sood
- Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Pin 721302 West Bengal, India
| | - Maitreyee Bhattacharyya
- Institute of Haematology & Transfusion Medicine, Medical College, Kolkata, Pin 700073 West Bengal, India
| | - Debasish Sarkar
- Department of Chemical Engineering, University of Calcutta, Pin 700009 West Bengal, India
| | - Sunando DasGupta
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Pin 721302 West Bengal, India.
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Abstract
Blood viscosity is increased by elevated concentrations of acute phase reactants and hypergammaglobulinemia in inflammation. These increase blood viscosity by increasing plasma viscosity and fostering erythrocyte aggregation. Blood viscosity is also increased by decreased erythrocyte deformability, as occurs in malaria. Increased blood viscosity contributes to the association of acute infections with myocardial infarction (MI), venous thrombosis, and venous thromboembolism. It also increases vascular resistance, which decreases tissue perfusion and activates stretch receptors in the left ventricle, thereby initiating the systemic vascular resistance response. This compensates for the increased vascular resistance by vasodilation, lowering hematocrit, and decreasing intravascular volume. This physiological response causes the anemias associated with malaria, chronic inflammation, and other chronic diseases. Since tissue perfusion is inversely proportional to blood viscosity, anemia may be beneficial as it increases tissue perfusion when erythrocyte aggregating factors or erythrocytes with decreased deformability are present in the blood.
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Affiliation(s)
- Gregory D Sloop
- Pathology, Idaho College of Osteopathic Medicine, Meridian, USA
| | - Quirijn De Mast
- Internal Medicine, Radboud University Medical Center, Nijmegan, NLD
| | - Gheorghe Pop
- Cardiology, Radboud University Medical Center, Nijmegen, NLD
| | | | - John A St Cyr
- Cardiac/Thoracic/Vascular Surgery, Jacqmar, Inc., Minneapolis, USA
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28
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Lee WC, Russell B, Sobota RM, Ghaffar K, Howland SW, Wong ZX, Maier AG, Dorin-Semblat D, Biswas S, Gamain B, Lau YL, Malleret B, Chu C, Nosten F, Renia L. Plasmodium-infected erythrocytes induce secretion of IGFBP7 to form type II rosettes and escape phagocytosis. eLife 2020; 9:e51546. [PMID: 32066522 PMCID: PMC7048393 DOI: 10.7554/elife.51546] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/27/2020] [Indexed: 12/21/2022] Open
Abstract
In malaria, rosetting is described as a phenomenon where an infected erythrocyte (IRBC) is attached to uninfected erythrocytes (URBC). In some studies, rosetting has been associated with malaria pathogenesis. Here, we have identified a new type of rosetting. Using a step-by-step approach, we identified IGFBP7, a protein secreted by monocytes in response to parasite stimulation, as a rosette-stimulator for Plasmodium falciparum- and P. vivax-IRBC. IGFBP7-mediated rosette-stimulation was rapid yet reversible. Unlike type I rosetting that involves direct interaction of rosetting ligands on IRBC and receptors on URBC, the IGFBP7-mediated, type II rosetting requires two additional serum factors, namely von Willebrand factor and thrombospondin-1. These two factors interact with IGFBP7 to mediate rosette formation by the IRBC. Importantly, the IGFBP7-induced type II rosetting hampers phagocytosis of IRBC by host phagocytes.
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Affiliation(s)
- Wenn-Chyau Lee
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Bruce Russell
- Department of Microbiology and ImmunologyUniversity of OtagoDunedinNew Zealand
| | - Radoslaw Mikolaj Sobota
- Systems Structural Biology Group, Institute of Molecular and Cell Biology (IMCB)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Institute of Medical Biology (IMB) Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Khairunnisa Ghaffar
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Shanshan W Howland
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Zi Xin Wong
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Alexander G Maier
- Biomedical Sciences and Biochemistry, Research School of BiologyAustralian National UniversityCanberraAustralia
| | - Dominique Dorin-Semblat
- Université de Paris, Biologie Intégrée du Globule Rouge, UMR_S1134, BIGR, INSERMParisFrance
- Institut National de la Transfusion SanguineParisFrance
| | - Subhra Biswas
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Benoit Gamain
- Université de Paris, Biologie Intégrée du Globule Rouge, UMR_S1134, BIGR, INSERMParisFrance
- Institut National de la Transfusion SanguineParisFrance
| | - Yee-Ling Lau
- Department of ParasitologyFaculty of Medicine, University of MalayaKuala LumpurMalaysia
| | - Benoit Malleret
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Department of Microbiology and Immunology, Yong Loo Lin School of MedicineNational University of SingaporeSingaporeSingapore
| | - Cindy Chu
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical MedicineMahidol UniversityMae SotThailand
- Centre for Tropical Medicine, Nuffield Department of MedicineUniversity of OxfordOxfordUnited Kingdom
| | - François Nosten
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical MedicineMahidol UniversityMae SotThailand
- Centre for Tropical Medicine, Nuffield Department of MedicineUniversity of OxfordOxfordUnited Kingdom
| | - Laurent Renia
- Singapore Immunology Network (SIgN)Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
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29
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Martakov IS, Shevchenko OG, Torlopov MA, Gerasimov EY, Sitnikov PA. Formation of gallic acid layer on γ-AlOOH nanoparticles surface and their antioxidant and membrane-protective activity. J Inorg Biochem 2019; 199:110782. [PMID: 31362175 DOI: 10.1016/j.jinorgbio.2019.110782] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/11/2019] [Accepted: 07/15/2019] [Indexed: 01/24/2023]
Abstract
In the reported study we prepared gallic acid modified γ-AlOOH nanoparticles. We proposed mechanism of phenolic compounds binding on the alumina, suggesting covalent and electrostatic interactions. Most of the properties of alumina nanoparticles (NPs) are unchanged, but there is partial reduction of surface charge. Prepared samples are colloidally stable hydrosols. It allowed us to perform biological studies on cellular and non-cellular models, which showed nontoxicity of both pure and hybrid γ-AlOOH nanoparticles. Furthermore, pure alumina NPs exhibit antioxidant properties, which are enhanced after gallic acid immobilization on their surface. Also, hybrid alumina-gallic acid NPs showed membrane-protective activity.
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Affiliation(s)
- I S Martakov
- Institute of Chemistry of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 167000, Syktyvkar, 48 Pervomayskaya St., Russian Federation.
| | - O G Shevchenko
- Institute of Biology of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 167982 Syktyvkar, 28 Kommunisticheskaya St., Russian Federation
| | - M A Torlopov
- Institute of Chemistry of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 167000, Syktyvkar, 48 Pervomayskaya St., Russian Federation
| | - E Yu Gerasimov
- Boreskov Institute of Catalysis SB RAS, 5 Lavrentieva Av., 630090 Novosibirsk, Russian Federation
| | - P A Sitnikov
- Institute of Chemistry of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 167000, Syktyvkar, 48 Pervomayskaya St., Russian Federation
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30
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Roderova J, Osickova A, Sukova A, Mikusova G, Fiser R, Sebo P, Osicka R, Masin J. Residues 529 to 549 participate in membrane penetration and pore-forming activity of the Bordetella adenylate cyclase toxin. Sci Rep 2019; 9:5758. [PMID: 30962483 PMCID: PMC6453906 DOI: 10.1038/s41598-019-42200-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 03/27/2019] [Indexed: 11/30/2022] Open
Abstract
The adenylate cyclase toxin-hemolysin (CyaA, ACT or AC-Hly) of pathogenic Bordetellae delivers its adenylyl cyclase (AC) enzyme domain into the cytosol of host cells and catalyzes uncontrolled conversion of cellular ATP to cAMP. In parallel, the toxin forms small cation-selective pores that permeabilize target cell membrane and account for the hemolytic activity of CyaA on erythrocytes. The pore-forming domain of CyaA is predicted to consist of five transmembrane α-helices, of which the helices I, III, IV and V have previously been characterized. We examined here the α-helix II that is predicted to form between residues 529 to 549. Substitution of the glycine 531 residue by a proline selectively reduced the hemolytic capacity but did not affect the AC translocating activity of the CyaA-G531P toxin. In contrast, CyaA toxins with alanine 538 or 546 replaced by diverse residues were selectively impaired in the capacity to translocate the AC domain across cell membrane but remained fully hemolytic. Such toxins, however, formed pores in planar asolectin bilayer membranes with a very low frequency and with at least two different conducting states. The helix-breaking substitution of alanine 538 by a proline residue abolished the voltage-activated increase of membrane activity of CyaA in asolectin bilayers. These results reveal that the predicted α-helix comprising the residues 529 to 549 plays a key role in CyaA penetration into the target plasma membrane and pore-forming activity of the toxin.
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Affiliation(s)
- Jana Roderova
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic
| | - Adriana Osickova
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic
| | - Anna Sukova
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic
| | - Gabriela Mikusova
- Charles University, Department of Genetics and Microbiology, Faculty of Science, Vinicna 5, 128 43, Prague, Czech Republic
| | - Radovan Fiser
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic.,Charles University, Department of Genetics and Microbiology, Faculty of Science, Vinicna 5, 128 43, Prague, Czech Republic
| | - Peter Sebo
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic
| | - Radim Osicka
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic
| | - Jiri Masin
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague, Czech Republic.
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31
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Youssof AME, Alanazi FK, Salem-Bekhit MM, Shakeel F, Haq N. Bacterial Ghosts Carrying 5-Fluorouracil: A Novel Biological Carrier for Targeting Colorectal Cancer. AAPS PharmSciTech 2019; 20:48. [PMID: 30617674 DOI: 10.1208/s12249-018-1249-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/13/2018] [Indexed: 01/25/2023] Open
Abstract
Bacterial ghosts (BGs) are non-deformed bacterial cell envelopes that possess undamaged external configurations for precise attachment to different cells of the human body. The Escherichia coli BGs were successfully produced using a modified sponge-like reduced protocol and characterized by SEM. Four different concentrations of 5-fluorouracil (5-FU) were used to study the impact on the "ghosts" cell wall. 5-FU was then loaded into the BGs and the loading capacity (LC %) and entrapment efficiency (EE %) were determined and were found to be 38.3 ± 0.8 and 76.6 ± 0.8, respectively. The in vitro release studies were conducted in dialysis bags over a time period of 16 days and the accumulative 5-FU released (%) was calculated. Overall, 69.2% of the ghost-associated 5-FU was released from the BGs and release from the E. coli ghosts is governed by non-Fickian diffusion. The Caco-2 cell line was used to investigate the cytotoxicity of 5-FU-loaded BGs.
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32
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He J, Bao Y, Li J, Qiu Z, Liu Y, Zhang X. Nanocomplexes of carboxymethyl chitosan/amorphous calcium phosphate reduce oral bacteria adherence and biofilm formation on human enamel surface. J Dent 2019; 80:15-22. [DOI: 10.1016/j.jdent.2018.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/26/2018] [Accepted: 11/06/2018] [Indexed: 10/27/2022] Open
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33
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Karemore MN, Avari JG. Zeta potential as a novel diagnostic tool for preeclampsia. Pregnancy Hypertens 2018; 13:187-197. [DOI: 10.1016/j.preghy.2018.06.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/10/2018] [Accepted: 06/22/2018] [Indexed: 11/28/2022]
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34
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Ho TL, Hoang NT, Lee J, Park JH, Kim BK. Determining mean corpuscular volume and red blood cell count using electrochemical collision events. Biosens Bioelectron 2018; 110:155-159. [DOI: 10.1016/j.bios.2018.03.053] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 01/12/2023]
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Rahman MA, Matsumura Y, Yano S, Ochiai B. pH-Responsive Charge-Conversional and Hemolytic Activities of Magnetic Nanocomposite Particles for Cell-Targeted Hyperthermia. ACS OMEGA 2018; 3:961-972. [PMID: 30023794 PMCID: PMC6045334 DOI: 10.1021/acsomega.7b01918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 01/16/2018] [Indexed: 05/12/2023]
Abstract
Magnetic nanocomposite particle (MNP)-induced hyperthermia therapy has been restricted by inefficient cellular targeting. pH-responsive charge-conversional MNPs can enhance selective cellular uptake in acidic cells like tumors by sensing extracellular acidity based on their charge alteration. We have synthesized new, pH-induced charge-conversional, superparamagnetic, and single-cored Fe3O4 nanocomposite particles coated by N-itaconylated chitosan (NICS) cross-linked with ethylene glycol diglycidyl ether (EGDE) (Fe3O4-NICS-EGDE) using a simple, one-step chemical coprecipitation-coating process. The surface of the Fe3O4-NICS-EGDE nanocomposite particles was modified with ethanolamine (EA) via aza-Michael addition to enhance their buffering capacity, aqueous stability, and pH sensitivity. The designed Fe3O4-NICS-EGDE-EA nanocomposite particles showed pH-dependent charge-conversional properties, colloidal stability, and excellent hemocompatibility in physiological media. By contrast, the charge-conversional properties enabled microwave-induced hemolysis only under weakly acidic conditions. Therefore, the composite particles are highly feasible for magnetically induced and targeted cellular thermotherapeutic applications.
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Affiliation(s)
- Md. Abdur Rahman
- Department
of Chemistry and Chemical Engineering, Graduate School
of Science and Engineering and Department of Biochemical Engineering, Graduate
School of Science and Engineering, Yamagata
University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yoshimasa Matsumura
- Department
of Chemistry and Chemical Engineering, Graduate School
of Science and Engineering and Department of Biochemical Engineering, Graduate
School of Science and Engineering, Yamagata
University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shigekazu Yano
- Department
of Chemistry and Chemical Engineering, Graduate School
of Science and Engineering and Department of Biochemical Engineering, Graduate
School of Science and Engineering, Yamagata
University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Bungo Ochiai
- Department
of Chemistry and Chemical Engineering, Graduate School
of Science and Engineering and Department of Biochemical Engineering, Graduate
School of Science and Engineering, Yamagata
University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
- E-mail:
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Nakajima Y, Ukai T, Shimizu T, Ogata K, Iwai S, Takahashi N, Aki A, Mizuki T, Maekawa T, Hanajiri T. Detection and Analysis of Targeted Biological Cells by Electrophoretic Coulter Method. Anal Chem 2017; 89:12450-12457. [DOI: 10.1021/acs.analchem.7b03533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshikata Nakajima
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Tomofumi Ukai
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Toshiaki Shimizu
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Kazuhei Ogata
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Seiki Iwai
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Naohiro Takahashi
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Atsushi Aki
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Toru Mizuki
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Toru Maekawa
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Tatsuro Hanajiri
- Bio-Nano Electronics
Research
Center, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
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Syk inhibitors interfere with erythrocyte membrane modification during P falciparum growth and suppress parasite egress. Blood 2017. [PMID: 28634183 DOI: 10.1182/blood-2016-11-748053] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Band 3 (also known as the anion exchanger, SLCA1, AE1) constitutes the major attachment site of the spectrin-based cytoskeleton to the erythrocyte's lipid bilayer and thereby contributes critically to the stability of the red cell membrane. During the intraerythrocytic stage of Plasmodium falciparum's lifecycle, band 3 becomes tyrosine phosphorylated in response to oxidative stress, leading to a decrease in its affinity for the spectrin/actin cytoskeleton and causing global membrane destabilization. Because this membrane weakening is hypothesized to facilitate parasite egress and the consequent dissemination of released merozoites throughout the bloodstream, we decided to explore which tyrosine kinase inhibitors might block the kinase-induced membrane destabilization. We demonstrate here that multiple Syk kinase inhibitors both prevent parasite-induced band 3 tyrosine phosphorylation and inhibit parasite-promoted membrane destabilization. We also show that the same Syk kinase inhibitors suppress merozoite egress near the end of the parasite's intraerythrocytic lifecycle. Because the entrapped merozoites die when prevented from escaping their host erythrocytes and because some Syk inhibitors have displayed long-term safety in human clinical trials, we suggest Syk kinase inhibitors constitute a promising class of antimalarial drugs that can suppress parasitemia by inhibiting a host target that cannot be mutated by the parasite to evolve drug resistance.
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Rice DR, de Lourdes Betancourt Mendiola M, Murillo-Solano C, Checkley LA, Ferdig MT, Pizarro JC, Smith BD. Antiplasmodial activity of targeted zinc(II)-dipicolylamine complexes. Bioorg Med Chem 2017; 25:2754-2760. [PMID: 28377170 DOI: 10.1016/j.bmc.2017.03.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 03/20/2017] [Accepted: 03/23/2017] [Indexed: 12/29/2022]
Abstract
This study measured the antiplasmodial activity of nine zinc-dipicolylamine (ZnDPA) complexes against three strains of Plasmodium falciparum, the causative parasite of malaria. Growth inhibition assays showed significant activity against all tested strains, with 50% inhibitory concentrations between 5 and 600nM and almost no toxic effect against host cells including healthy red blood cells. Fluorescence microscopy studies with a green-fluorescent ZnDPA probe showed selective targeting of infected red blood cells. The results suggest that ZnDPA coordination complexes are promising antiplasmodial agents with potential for targeted malaria treatment.
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Affiliation(s)
- Douglas R Rice
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | | | - Claribel Murillo-Solano
- Department of Tropical Medicine, J Bennett Johnston Building, 1430 Tulane Avenue, Tulane University, New Orleans, LA 70112, USA
| | - Lisa A Checkley
- Department of Biological Science, Galvin Life Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Michael T Ferdig
- Department of Biological Science, Galvin Life Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Juan C Pizarro
- Department of Tropical Medicine, J Bennett Johnston Building, 1430 Tulane Avenue, Tulane University, New Orleans, LA 70112, USA
| | - Bradley D Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA.
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Sloop GD, Bialczak JK, Weidman JJ, St. Cyr J. Uric acid increases erythrocyte aggregation: Implications for cardiovascular disease. Clin Hemorheol Microcirc 2016; 63:349-359. [DOI: 10.3233/ch-152023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Stearylamine Liposomal Delivery of Monensin in Combination with Free Artemisinin Eliminates Blood Stages of Plasmodium falciparum in Culture and P. berghei Infection in Murine Malaria. Antimicrob Agents Chemother 2015; 60:1304-18. [PMID: 26666937 DOI: 10.1128/aac.01796-15] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/04/2015] [Indexed: 11/20/2022] Open
Abstract
The global emergence of drug resistance in malaria is impeding the therapeutic efficacy of existing antimalarial drugs. Therefore, there is a critical need to develop an efficient drug delivery system to circumvent drug resistance. The anticoccidial drug monensin, a carboxylic ionophore, has been shown to have antimalarial properties. Here, we developed a liposome-based drug delivery of monensin and evaluated its antimalarial activity in lipid formulations of soya phosphatidylcholine (SPC) cholesterol (Chol) containing either stearylamine (SA) or phosphatidic acid (PA) and different densities of distearoyl phosphatidylethanolamine-methoxy-polyethylene glycol 2000 (DSPE-mPEG-2000). These formulations were found to be more effective than a comparable dose of free monensin in Plasmodium falciparum (3D7) cultures and established mice models of Plasmodium berghei strains NK65 and ANKA. Parasite killing was determined by a radiolabeled [(3)H]hypoxanthine incorporation assay (in vitro) and microscopic counting of Giemsa-stained infected erythrocytes (in vivo). The enhancement of antimalarial activity was dependent on the liposomal lipid composition and preferential uptake by infected red blood cells (RBCs). The antiplasmodial activity of monensin in SA liposome (50% inhibitory concentration [IC50], 0.74 nM) and SPC:Chol-liposome with 5 mol% DSPE-mPEG 2000 (IC50, 0.39 nM) was superior to that of free monensin (IC50, 3.17 nM), without causing hemolysis of erythrocytes. Liposomes exhibited a spherical shape, with sizes ranging from 90 to 120 nm, as measured by dynamic light scattering and high-resolution electron microscopy. Monensin in long-circulating liposomes of stearylamine with 5 mol% DSPE-mPEG 2000 in combination with free artemisinin resulted in enhanced killing of parasites, prevented parasite recrudescence, and improved survival. This is the first report to demonstrate that monensin in PEGylated stearylamine (SA) liposome has therapeutic potential against malaria infections.
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Halder S, Yadav KK, Sarkar R, Mukherjee S, Saha P, Haldar S, Karmakar S, Sen T. Alteration of Zeta potential and membrane permeability in bacteria: a study with cationic agents. SPRINGERPLUS 2015; 4:672. [PMID: 26558175 PMCID: PMC4633473 DOI: 10.1186/s40064-015-1476-7] [Citation(s) in RCA: 261] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/27/2015] [Indexed: 12/28/2022]
Abstract
In the present study, we have tried to establish the correlation between changes in Zeta potential with that of cell surface permeability using bacteria (Escherichia coli and Staphylococcus aureus). An effort has been made to establish Zeta potential as a possible marker for the assessment of membrane damage, with a scope for predicting alteration of cell viability. Cationic agents like, cetyl trimethyl ammonium bromide and polymyxin B were used for inducing alteration of Zeta potential, and the changes occurring in the membrane permeability were studied. In addition, assessment of poly-dispersity index (PDI), cell viability along with confocal microscopic analysis were performed. Based on our results, it can be suggested that alteration of Zeta potential may be correlated to the enhancement of membrane permeability and PDI, and it was observed that beyond a critical point, it leads to cell death (both Gram-positive and Gram-negative bacteria). The present findings can not only be used for studying membrane active molecules but also for understanding the surface potential versus permeability relationship.
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Affiliation(s)
- Suman Halder
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Kirendra Kumar Yadav
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Ratul Sarkar
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Sudipta Mukherjee
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Pritam Saha
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Saubhik Haldar
- Department of Chemistry, Jadavpur University, Kolkata, 700032 India
| | - Sanmoy Karmakar
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
| | - Tuhinadri Sen
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 West Bengal India
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Physicochemical Aspects of the Plasmodium chabaudi-Infected Erythrocyte. BIOMED RESEARCH INTERNATIONAL 2015; 2015:642729. [PMID: 26557685 PMCID: PMC4628737 DOI: 10.1155/2015/642729] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/16/2015] [Accepted: 07/21/2015] [Indexed: 11/17/2022]
Abstract
Membrane electrochemical potential is a feature of the molecular profile of the cell membrane and the two-dimensional arrangement of its charge-bearing molecules. Plasmodium species, the causative agents of malaria, are intracellular parasites that remodel host erythrocytes by expressing their own proteins on erythrocyte membranes. Although various aspects of the modifications made to the host erythrocyte membrane have been extensively studied in some human Plasmodium species (such as Plasmodium falciparum), details of the structural and molecular biological modifications made to host erythrocytes by nonhuman Plasmodium parasites have not been studied. We employed zeta potential analysis of erythrocytes parasitized by P. chabaudi, a nonhuman Plasmodium parasite. From these measurements, we found that the surface potential shift was more negative for P. chabaudi-infected erythrocytes than for P. falciparum-infected erythrocytes. However, electron microscopic analysis of the surface of P. chabaudi-infected erythrocytes did not reveal any modifications as compared with nonparasitized erythrocytes. These results suggest that differences in the membrane modifications found herein represent unique attributes related to the pathogenesis profiles of the two different malaria parasite species in different host animals and that these features have been acquired through parasite adaptations acquired over long evolutionary time periods.
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43
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Flavonoids in Microheterogeneous Media, Relationship between Their Relative Location and Their Reactivity towards Singlet Oxygen. PLoS One 2015; 10:e0129749. [PMID: 26098745 PMCID: PMC4476713 DOI: 10.1371/journal.pone.0129749] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/12/2015] [Indexed: 11/19/2022] Open
Abstract
In this work, the relationship between the molecular structure of three flavonoids (kaempferol, quercetin and morin), their relative location in microheterogeneous media (liposomes and erythrocyte membranes) and their reactivity against singlet oxygen was studied. The changes observed in membrane fluidity induced by the presence of these flavonoids and the influence of their lipophilicity/hydrophilicity on the antioxidant activity in lipid membranes were evaluated by means of fluorescent probes such as Laurdan and diphenylhexatriene (DPH). The small differences observed for the value of generalized polarization of Laurdan (GP) curves in function of the concentration of flavonoids, indicate that these three compounds promote similar alterations in liposomes and erythrocyte membranes. In addition, these compounds do not produce changes in fluorescence anisotropy of DPH, discarding their location in deeper regions of the lipid bilayer. The determined chemical reactivity sequence is similar in all the studied media (kaempferol < quercetin < morin). Morin is approximately 10 times more reactive than quercetin and 20 to 30 times greater than kaempferol, depending on the medium.
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Naeem S, Kiew LV, Chung LY, Fui KS, Misran MB. A Comparative Approach for the Preparation and Physicochemical Characterization of Lecithin Liposomes Using Chloroform and Non-Halogenated Solvents. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1689-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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45
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Chakraborti S, Mandal AK, Sarwar S, Singh P, Chakraborty R, Chakrabarti P. Bactericidal effect of polyethyleneimine capped ZnO nanoparticles on multiple antibiotic resistant bacteria harboring genes of high-pathogenicity island. Colloids Surf B Biointerfaces 2014; 121:44-53. [DOI: 10.1016/j.colsurfb.2014.03.044] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 03/13/2014] [Accepted: 03/25/2014] [Indexed: 10/25/2022]
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46
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Jhong JF, Sin MC, Kung HH, Chinnathambi A, Alharbi SA, Chang Y. Hemocompatibility of pseudozwitterionic polymer brushes with a systematic well-defined charge-bias control. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1558-72. [DOI: 10.1080/09205063.2014.921754] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Minasyan H. Erythrocyte and blood antibacterial defense. Eur J Microbiol Immunol (Bp) 2014; 4:138-43. [PMID: 24883200 DOI: 10.1556/eujmi.4.2014.2.7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 04/10/2014] [Indexed: 12/30/2022] Open
Abstract
UNLABELLED It is an axiom that blood cellular immunity is provided by leukocytes. As to erythrocytes, it is generally accepted that their main function is respiration. Our research provides objective video and photo evidence regarding erythrocyte bactericidal function. Phase-contrast immersion vital microscopy of the blood of patients with bacteremia was performed, and the process of bacteria entrapping and killing by erythrocytes was shot by means of video camera. Video evidence demonstrates that human erythrocytes take active part in blood bactericidal action and can repeatedly engulf and kill bacteria of different species and size. Erythrocytes are extremely important integral part of human blood cellular immunity. COMPARED WITH PHAGOCYTIC LEUKOCYTES, THE ERYTHROCYTES a) are more numerous; b) are able to entrap and kill microorganisms repeatedly without being injured; c) are more resistant to infection and better withstand the attacks of pathogens; d) have longer life span and are produced faster; e) are inauspicious media for proliferation of microbes and do not support replication of chlamidiae, mycoplasmas, rickettsiae, viruses, etc.; and f) are more effective and uncompromised bacterial killers. Blood cellular immunity theory and traditional view regarding the function of erythrocytes in human blood should be revised.
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48
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Bridle H, Miller B, Desmulliez MPY. Application of microfluidics in waterborne pathogen monitoring: a review. WATER RESEARCH 2014; 55:256-71. [PMID: 24631875 DOI: 10.1016/j.watres.2014.01.061] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/23/2014] [Accepted: 01/24/2014] [Indexed: 05/03/2023]
Abstract
A review of the recent advances in microfluidics based systems for the monitoring of waterborne pathogens is provided in this article. Emphasis has been made on existing, commercial and state-of-the-art systems and research activities in laboratories worldwide. The review separates sample processing systems and monitoring systems, highlighting the slow progress made in automated sample processing for monitoring of pathogens in waterworks and in the field. Future potential directions of research are also highlighted in the conclusions.
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Affiliation(s)
- Helen Bridle
- Heriot-Watt University, Institute of Biological Chemistry, Biophysics and Bioengineering (IB3), Riccarton, Edinburgh, United Kingdom.
| | - Brian Miller
- University of Edinburgh, King's Buildings, Edinburgh, United Kingdom.
| | - Marc P Y Desmulliez
- Heriot-Watt University, MicroSystems Engineering Centre (MISEC), Riccarton, Edinburgh, United Kingdom.
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49
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Farber PL, Hochman B, Furtado F, Ferreira LM. Electricity and colloidal stability: how charge distribution in the tissue can affects wound healing. Med Hypotheses 2013; 82:199-204. [PMID: 24365275 DOI: 10.1016/j.mehy.2013.11.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 10/10/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
Abstract
The role of endogenous electric fields in wound healing is still not fully understood. Electric fields are of fundamental importance in various biological processes, ranging from embryonic development to disease progression, as described by many investigators in the last century. This hypothesis brings together some relevant literature on the importance of electric fields in physiology and pathology, the theory of biologically closed electric circuits, skin battery (a phenomenon that occurs after skin injury and seems to be involved in tissue repair), the relationship between electric charge and interstitial exclusion, and how skin tissues can be regarded as colloidal systems. The importance of electric charges, as established in the early works on the subject and the relevance of zeta potential and colloid stability are also analyzed, and together bring a new light for the physics involved in the wound repair of all the body tissues.
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Affiliation(s)
| | - Bernardo Hochman
- Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Fabianne Furtado
- Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
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