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Bregnhøj M, Thorning F, Ogilby PR. Singlet Oxygen Photophysics: From Liquid Solvents to Mammalian Cells. Chem Rev 2024; 124:9949-10051. [PMID: 39106038 DOI: 10.1021/acs.chemrev.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Molecular oxygen, O2, has long provided a cornerstone for studies in chemistry, physics, and biology. Although the triplet ground state, O2(X3Σg-), has garnered much attention, the lowest excited electronic state, O2(a1Δg), commonly called singlet oxygen, has attracted appreciable interest, principally because of its unique chemical reactivity in systems ranging from the Earth's atmosphere to biological cells. Because O2(a1Δg) can be produced and deactivated in processes that involve light, the photophysics of O2(a1Δg) are equally important. Moreover, pathways for O2(a1Δg) deactivation that regenerate O2(X3Σg-), which address fundamental principles unto themselves, kinetically compete with the chemical reactions of O2(a1Δg) and, thus, have practical significance. Due to technological advances (e.g., lasers, optical detectors, microscopes), data acquired in the past ∼20 years have increased our understanding of O2(a1Δg) photophysics appreciably and facilitated both spatial and temporal control over the behavior of O2(a1Δg). One goal of this Review is to summarize recent developments that have broad ramifications, focusing on systems in which oxygen forms a contact complex with an organic molecule M (e.g., a liquid solvent). An important concept is the role played by the M+•O2-• charge-transfer state in both the formation and deactivation of O2(a1Δg).
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Affiliation(s)
- Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Frederik Thorning
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
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2
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Tehrani SF, Bharadwaj P, Leblond Chain J, Roullin VG. Purification processes of polymeric nanoparticles: How to improve their clinical translation? J Control Release 2023; 360:591-612. [PMID: 37422123 DOI: 10.1016/j.jconrel.2023.06.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/05/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
Polymeric nanoparticles, as revolutionary nanomedicines, have offered a new class of diagnostic and therapeutic solutions for a multitude of diseases. With its immense potential, the world witnesses the new age of nanotechnology after the COVID-19 vaccines were developed based on nanotechnology. Even though there are countless benchtop research studies in the nanotechnology world, their integration into commercially available technologies is still restricted. The post-pandemic world demands a surge of research in the domain, which leaves us with the fundamental question: why is the clinical translation of therapeutic nanoparticles so restricted? Complications in nanomedicine purification, among other things, are to blame for the lack of transference. Polymeric nanoparticles, owing to their ease of manufacture, biocompatibility, and enhanced efficiency, are one of the more explored domains in organic-based nanomedicines. Purification of nanoparticles can be challenging and necessitates tailoring the available methods in accordance with the polymeric nanoparticle and impurities involved. Though a number of techniques have been described, there are no available guidelines that help in selecting the method to better suit our requirements. We encountered this difficulty while compiling articles for this review and looking for methods to purify polymeric nanoparticles. The currently accessible bibliography for purification techniques only provides approaches for a specific type of nanomaterial or sometimes even procedures for bulk materials, that are not fully relevant to nanoparticles. In our research, we tried to summarize the available purification techniques using the approach of A.F. Armington. We divided the purification systems into two major classes, namely: phase separation-based techniques (based on the physical differences between the phases) and matter exchange-based techniques (centered on physicochemical induced transfer of materials and compounds). The phase separation methods are based on either using nanoparticle size differences to retain them on a physical barrier (filtration techniques) or using their densities to segregate them (centrifugation techniques). The matter exchange separation methods rely on either transferring the molecules or impurities across a barrier using simple physicochemical phenomena, like the concentration gradients (dialysis method) or partition coefficients (extraction technique). After describing the methods in detail, we highlight their advantages and limitations, mainly focusing on preformed polymer-based nanoparticles. Tailoring a purification strategy takes into account the nanoparticle structure and its integrity, the method selected should be suited for preserving the integrity of the particles, in addition to conforming to the economical, material and productivity considerations. In the meantime, we advocate the use of a harmonized international regulatory framework to define the adequate physicochemical and biological characterization of nanomedicines. An appropriate purification strategy serves as the backbone to achieving desired characteristics, in addition to reducing variability. As a result, the present review aspires to serve as a comprehensive guide for researchers, who are new to the domain, as well as a synopsis of purification strategies and analytical characterization methods used in preclinical studies.
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Affiliation(s)
- Soudeh F Tehrani
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada
| | - Priyanshu Bharadwaj
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada
| | | | - V Gaëlle Roullin
- Laboratoire de Nanotechnologies Pharmaceutiques, Faculté de pharmacie, Université de Montréal, C.P. 6128, succursale centre-ville, Montréal, Québec H3C 3J7, Canada.
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3
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Pulingam T, Foroozandeh P, Chuah JA, Sudesh K. Exploring Various Techniques for the Chemical and Biological Synthesis of Polymeric Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:576. [PMID: 35159921 PMCID: PMC8839423 DOI: 10.3390/nano12030576] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/31/2022] [Accepted: 02/06/2022] [Indexed: 12/12/2022]
Abstract
Nanoparticles (NPs) have remarkable properties for delivering therapeutic drugs to the body's targeted cells. NPs have shown to be significantly more efficient as drug delivery carriers than micron-sized particles, which are quickly eliminated by the immune system. Biopolymer-based polymeric nanoparticles (PNPs) are colloidal systems composed of either natural or synthetic polymers and can be synthesized by the direct polymerization of monomers (e.g., emulsion polymerization, surfactant-free emulsion polymerization, mini-emulsion polymerization, micro-emulsion polymerization, and microbial polymerization) or by the dispersion of preformed polymers (e.g., nanoprecipitation, emulsification solvent evaporation, emulsification solvent diffusion, and salting-out). The desired characteristics of NPs and their target applications are determining factors in the choice of method used for their production. This review article aims to shed light on the different methods employed for the production of PNPs and to discuss the effect of experimental parameters on the physicochemical properties of PNPs. Thus, this review highlights specific properties of PNPs that can be tailored to be employed as drug carriers, especially in hospitals for point-of-care diagnostics for targeted therapies.
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Affiliation(s)
| | | | | | - Kumar Sudesh
- Ecobiomaterial Research Laboratory, School of Biological Sciences, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia; (T.P.); (P.F.); (J.-A.C.)
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Targeted Nanoparticles for Fluorescence Imaging of Folate Receptor Positive Tumors. Biomolecules 2020; 10:biom10121651. [PMID: 33317162 PMCID: PMC7764199 DOI: 10.3390/biom10121651] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022] Open
Abstract
This report presents the synthesis and folate receptor target-specificity of amino-functionalized polyacrylamide nanoparticles (AFPAA NPs) for near-infrared (NIR) fluorescence imaging of cancer. For the synthesis of desired nano-constructs, the AFPAA NPs (hereafter referred to as NPs) were reacted with a NIR cyanine dye (CD) bearing carboxylic acid functionality by following our previously reported approach, and the resulting conjugate (NP-CD) on further reaction with folic acid (FA) resulted in a new nano-construct, FA-NP-CD, which demonstrated significantly higher uptake in folate receptor-positive breast cancer cells (KB+) and in folate receptor over-expressed tumors in vivo. The target-specificity of these nanoparticles was further confirmed by inhibition assay in folate receptor-positive (KB+) and -negative (HT-1080) cell lines. To show the advantages of polyacrylamide (PAA)-based NPs in folate receptor target-specificity, the CD used in preparing the FA-NP-CD construct was also reacted with folic acid alone and the synthetic conjugate (CD-FA) was also investigated for its target-specificity. Interestingly, in contrast to NPs (FA-NP-CD), the CD-FA conjugate did not show any significant in vitro or in vivo specificity toward folate receptors, showing the advantages of PAA-based nanotechnology in delivering the desired agent to tumor cells.
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Sandland J, Savoie H, Boyle RW, Murray BS. RAPTA-Decorated Polyacrylamide Nanoparticles: Exploring their Synthesis, Physical Properties and Effect on Cell Viability. Chembiochem 2020; 22:931-936. [PMID: 33095468 DOI: 10.1002/cbic.202000704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/23/2020] [Indexed: 12/29/2022]
Abstract
In this study, we report the first successful immobilisation of a known cytoactive [Ru(η6 -arene)(C2 O4 )PTA] (RAPTA) complex to a biologically inert polyacrylamide nanoparticle support. The nanoparticles have been characterised by zetasizer analysis, UV/Vis, ATR-FTIR, TGA and ICP-MS to qualitatively and quantitatively confirm the presence of the metallodrug on the surface of the carrier. The native RAPTA complex required a concentration of 50 μM to produce a cell viability of 47.1±2.1 % when incubated with human Caucasian colorectal adenocarcinoma cells for 72 h. Under similar conditions a cell viability of 45.1±1.9 % was obtained with 0.5 μM of RAPTA complex in its immobilised form. Therefore, conjugation of the RAPTA metallodrug to our nanoparticle carriers resulted in a significant 100-fold decrease in effective concentration of ruthenium required for a near identical biological effect on cell viability.
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Affiliation(s)
- Jordon Sandland
- Department of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull E. Yorkshire, HU6 7RX, UK
| | - Huguette Savoie
- Department of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull E. Yorkshire, HU6 7RX, UK
| | - Ross W Boyle
- Department of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull E. Yorkshire, HU6 7RX, UK
| | - Benjamin S Murray
- Department of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull E. Yorkshire, HU6 7RX, UK
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Ruiz-González R, Bresolí-Obach R, Gulías Ò, Agut M, Savoie H, Boyle RW, Nonell S, Giuntini F. NanoSOSG: A Nanostructured Fluorescent Probe for the Detection of Intracellular Singlet Oxygen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Rubén Ruiz-González
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Roger Bresolí-Obach
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Òscar Gulías
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Montserrat Agut
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Huguette Savoie
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
| | - Ross W. Boyle
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
| | - Santi Nonell
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Francesca Giuntini
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
- School of Pharmacy and Biomolecular Sciences; Liverpool John Moores University; Liverpool L3 3AF UK
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7
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Ruiz-González R, Bresolí-Obach R, Gulías Ò, Agut M, Savoie H, Boyle RW, Nonell S, Giuntini F. NanoSOSG: A Nanostructured Fluorescent Probe for the Detection of Intracellular Singlet Oxygen. Angew Chem Int Ed Engl 2017; 56:2885-2888. [DOI: 10.1002/anie.201609050] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/11/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Rubén Ruiz-González
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Roger Bresolí-Obach
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Òscar Gulías
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Montserrat Agut
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Huguette Savoie
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
| | - Ross W. Boyle
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
| | - Santi Nonell
- Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta 390 08019 Barcelona Spain
| | - Francesca Giuntini
- Department of Chemistry; University of Hull; Cottingham Road Kingston upon Hull HU6 7RX UK
- School of Pharmacy and Biomolecular Sciences; Liverpool John Moores University; Liverpool L3 3AF UK
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8
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Dąbrowski JM. Reactive Oxygen Species in Photodynamic Therapy: Mechanisms of Their Generation and Potentiation. ADVANCES IN INORGANIC CHEMISTRY 2017. [DOI: 10.1016/bs.adioch.2017.03.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Dąbrowski JM, Pucelik B, Regiel-Futyra A, Brindell M, Mazuryk O, Kyzioł A, Stochel G, Macyk W, Arnaut LG. Engineering of relevant photodynamic processes through structural modifications of metallotetrapyrrolic photosensitizers. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.06.007] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Pucelik B, Gürol I, Ahsen V, Dumoulin F, Dąbrowski JM. Fluorination of phthalocyanine substituents: Improved photoproperties and enhanced photodynamic efficacy after optimal micellar formulations. Eur J Med Chem 2016; 124:284-298. [PMID: 27597406 DOI: 10.1016/j.ejmech.2016.08.035] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 11/19/2022]
Abstract
A fluorinated phthalocyanine and its non-fluorinated analogue were selected to evaluate the potential enhancement of fluorination on photophysical, photochemical and redox properties as well as on biological activity in cellular and animal models. Due to the pharmacological relevance, the affinity of these phthalocyanines towards biological membranes (logPow) as well as their primary interaction with human serum albumin (HSA) or low-density lipoprotein (LDL) were determined. Water-dispersible drug formulation of phthalocyanines via Pluronic®-based triblock copolymer micelles was prepared to avoid self-aggregation effects and to improve their delivery. The obtained results demonstrate that phthalocyanines incorporation into tunable-polymeric micelles significantly enhanced their cellular uptake and their photocytotoxicity. The improved biodistribution and photodynamic efficacy of the phthalocyanines-triblock copolymer conjugates was also confirmed in vivo in CT26 bearing BALB/c mice. PDT with both compounds led to tumor growth inhibition in all treated animals. Fluorinated phthalocyanine 2 turned out to be the most effective anticancer agent as the tumors of 20% of mice treated regressed completely and did not appear for over one year after treatment.
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Affiliation(s)
- Barbara Pucelik
- Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Poland
| | - Ilke Gürol
- TÜBITAK Marmara Research Center, Materials Institute, P.O. Box 21, 41470 Gebze, Kocaeli, Turkey
| | - Vefa Ahsen
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Fabienne Dumoulin
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey.
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11
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Spagnul C, Greenman J, Wainwright M, Kamil Z, Boyle RW. Synthesis, characterization and biological evaluation of a new photoactive hydrogel against Gram-positive and Gram-negative bacteria. J Mater Chem B 2016; 4:1499-1509. [DOI: 10.1039/c5tb02569a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Development of a cheap material active against both Gram-positive and Gram-negative bacteria to be used as a novel water-sterilizing device.
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Affiliation(s)
- Cinzia Spagnul
- Department of Chemistry
- University of Hull
- East Yorkshire
- UK
| | - John Greenman
- School of Life Sciences
- University of the West of England
- Bristol
- UK
| | - Mark Wainwright
- School of Pharmacy and Biomolecular Sciences
- Liverpool John Moores University
- Liverpool
- UK
| | - Zeeniya Kamil
- School of Life Sciences
- University of the West of England
- Bristol
- UK
| | - Ross W. Boyle
- Department of Chemistry
- University of Hull
- East Yorkshire
- UK
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12
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Entract GM, Bryden F, Domarkas J, Savoie H, Allott L, Archibald SJ, Cawthorne C, Boyle RW. Development of PDT/PET Theranostics: Synthesis and Biological Evaluation of an (18)F-Radiolabeled Water-Soluble Porphyrin. Mol Pharm 2015; 12:4414-23. [PMID: 26559906 DOI: 10.1021/acs.molpharmaceut.5b00606] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthesis of the first water-soluble porphyrin radiolabeled with fluorine-18 is described: a new molecular theranostic agent which integrates the therapeutic selectivity of photodynamic therapy (PDT) with the imaging efficacy of positron emission tomography (PET). Generation of the theranostic was carried out through the conjugation of a cationic water-soluble porphyrin bearing an azide functionality to a fluorine-18 radiolabeled prosthetic bearing an alkyne functionality through click conjugation, with excellent yields obtained in both cold and hot synthesis. Biological evaluation of the synthesized structures shows the first example of an (18)F-radiolabeled porphyrin retaining photocytotoxicity following radiolabeling and demonstrable conjugate uptake and potential application as a radiotracer in vivo. The promising results gained from biological evaluation demonstrate the potential of this structure as a clinically relevant theranostic agent, offering exciting possibilities for the simultaneous imaging and photodynamic treatment of tumors.
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Affiliation(s)
- Guy M Entract
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
| | - Francesca Bryden
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Juozas Domarkas
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Huguette Savoie
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
| | - Louis Allott
- Institute of Cancer Research , 123 Old Brompton Road, London, SW7 3RP, U.K
| | - Stephen J Archibald
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Chris Cawthorne
- Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K.,School of Biological, Biomedical and Environmental Sciences, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Ross W Boyle
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
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13
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Lavado AS, Chauhan VM, Zen AA, Giuntini F, Jones DRE, Boyle RW, Beeby A, Chan WC, Aylott JW. Controlled intracellular generation of reactive oxygen species in human mesenchymal stem cells using porphyrin conjugated nanoparticles. NANOSCALE 2015; 7:14525-14531. [PMID: 26259822 DOI: 10.1039/c5nr00795j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nanoparticles capable of generating controlled amounts of intracellular reactive oxygen species (ROS), that advance the study of oxidative stress and cellular communication, were synthesized by functionalizing polyacrylamide nanoparticles with zinc(II) porphyrin photosensitisers. Controlled ROS production was demonstrated in human mesenchymal stem cells (hMSCs) through (1) production of nanoparticles functionalized with varying percentages of Zn(II) porphyrin and (2) modulating the number of doses of excitation light to internalized nanoparticles. hMSCs challenged with nanoparticles functionalized with increasing percentages of Zn(II) porphyrin and high numbers of irradiations of excitation light were found to generate greater amounts of ROS. A novel dye, which is transformed into fluorescent 7-hydroxy-4-trifluoromethyl-coumarin in the presence of hydrogen peroxide, provided an indirect indicator for cumulative ROS production. The mitochondrial membrane potential was monitored to investigate the destructive effect of increased intracellular ROS production. Flow cytometric analysis of nanoparticle treated hMSCs suggested irradiation with excitation light signalled controlled apoptotic cell death, rather than uncontrolled necrotic cell death. Increased intracellular ROS production did not induce phenotypic changes in hMSC subcultures.
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Affiliation(s)
- Andrea S Lavado
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, Boots Science Building, University of Nottingham, Nottingham, NG7 2RD, UK.
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14
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Ma K, Xu Y, An Z. Templateless synthesis of polyacrylamide-based Nanogels via RAFT dispersion polymerization. Macromol Rapid Commun 2015; 36:566-70. [PMID: 25684634 DOI: 10.1002/marc.201400730] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/22/2015] [Indexed: 11/08/2022]
Abstract
This paper reports on the synthesis of well-defined polyacrylamide-based nanogels via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization, highlighting a templateless route for the efficient synthesis of nanogels based on water-soluble polymers. RAFT dispersion polymerization of acrylamide in co-nonsolvents of water-tert-butanol mixtures by chain extension from poly(dimethylacrylamide) shows well-controlled polymerization process, uniform nanogel size, and excellent colloidal stability. The versatility of this approach is further demonstrated by introducing a hydrophobic co-monomer (butyl acrylate) without disturbing the dispersion polymerization process.
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Affiliation(s)
- Kai Ma
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Department of Chemistry, Shanghai University, Shanghai, 200444, China
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15
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Tarakci DK, Berber S, Zorlu Y, Atilla D, Ahsen V, Dumoulin F. The synthesis of an octasubstituted monohydroxylated phthalocyanine designed to investigate the effect of the presence of active moieties. NEW J CHEM 2015. [DOI: 10.1039/c5nj00229j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Filling a lack: monofunctionalized octasubstitution, the missing substitution pattern of phthalocyanines.
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Affiliation(s)
- Deniz Kutlu Tarakci
- Gebze Technical University
- Department of Chemistry
- 41400 Kocaeli
- Turkey
- Yıldız Technical University
| | - Savaş Berber
- Gebze Technical University
- Department of Physics
- 41400 Kocaeli
- Turkey
| | - Yunus Zorlu
- Gebze Technical University
- Department of Chemistry
- 41400 Kocaeli
- Turkey
| | - Devrim Atilla
- Gebze Technical University
- Department of Chemistry
- 41400 Kocaeli
- Turkey
| | - Vefa Ahsen
- Gebze Technical University
- Department of Chemistry
- 41400 Kocaeli
- Turkey
| | - Fabienne Dumoulin
- Gebze Technical University
- Department of Chemistry
- 41400 Kocaeli
- Turkey
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16
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Aydın Tekdaş D, Garifullin R, Şentürk B, Zorlu Y, Gundogdu U, Atalar E, Tekinay AB, Chernonosov AA, Yerli Y, Dumoulin F, Guler MO, Ahsen V, Gürek AG. Design of a Gd-DOTA-Phthalocyanine Conjugate Combining MRI Contrast Imaging and Photosensitization Properties as a Potential Molecular Theranostic. Photochem Photobiol 2014; 90:1376-86. [DOI: 10.1111/php.12332] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 08/06/2014] [Indexed: 12/28/2022]
Affiliation(s)
| | - Ruslan Garifullin
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Berna Şentürk
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Yunus Zorlu
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Umut Gundogdu
- National Magnetic Resonance Research Center (UMRAM); Bilkent University; Ankara Turkey
| | - Ergin Atalar
- National Magnetic Resonance Research Center (UMRAM); Bilkent University; Ankara Turkey
- Department of Electrical and Electronics Engineering; Bilkent University; Ankara Turkey
| | - Ayse B. Tekinay
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | | | - Yusuf Yerli
- Physics Department; Arts and Science Faculty; Yildiz Technical University; Istanbul Turkey
| | - Fabienne Dumoulin
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Mustafa O. Guler
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey
| | - Vefa Ahsen
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
| | - Ayşe Gül Gürek
- Department of Chemistry; Gebze Institute of Technology; Kocaeli Turkey
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17
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Giuntini F, Chauhan VM, Aylott JW, Rosser GA, Athanasiadis A, Beeby A, MacRobert AJ, Brown RA, Boyle RW. Conjugatable water-soluble Pt(II) and Pd(II) porphyrin complexes: novel nano- and molecular probes for optical oxygen tension measurement in tissue engineering. Photochem Photobiol Sci 2014; 13:1039-51. [PMID: 24818569 DOI: 10.1039/c4pp00026a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Measurement of oxygen tension in compressed collagen sheets was performed using matrix-embedded optical oxygen sensors based on platinum(II) and palladium(II) porphyrins supported on polyacrylamide nanoparticles. Bespoke, fully water-soluble, mono-functionalised Pt(II) and Pd(II) porphyrin complexes designed for conjugation under mild conditions were obtained using microwave-assisted metallation. The new sensors display a linear response (1/τ vs. O2) to varying oxygen tension over a biologically relevant range (7.0 × 10(-4) to 2.7 × 10(-1) mM) in aqueous solutions; a behaviour that is maintained following conjugation to polyacrylamide nanoparticles, and following embedding of the nanosensors in compressed collagen sheets, paving the way to innovative approaches for real-time resolution of oxygen gradients throughout 3D matrices useful for tissue regeneration.
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Affiliation(s)
- F Giuntini
- Department of Chemistry, University of Hull, Hull, UK.
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18
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Bryden F, Maruani A, Savoie H, Chudasama V, Smith MEB, Caddick S, Boyle RW. Regioselective and stoichiometrically controlled conjugation of photodynamic sensitizers to a HER2 targeting antibody fragment. Bioconjug Chem 2014; 25:611-7. [PMID: 24564170 DOI: 10.1021/bc5000324] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rapidly increasing interest in the synthesis of antibody-drug conjugates as powerful targeted anticancer agents demonstrates the growing appreciation of the power of antibodies and antibody fragments as highly selective targeting moieties. This targeting ability is of particular interest in the area of photodynamic therapy, as the applicability of current clinical photosensitizers is limited by their relatively poor accumulation in target tissue in comparison to healthy tissue. Although synthesis of porphyrin-antibody conjugates has been previously demonstrated, existing work in this area has been hindered by the limitations of conventional antibody conjugation methods. This work describes the attachment of azide-functionalized, water-soluble porphyrins to a tratuzumab Fab fragment via a novel conjugation methodology. This method allows for the synthesis of a homogeneous product without the loss of structural stability associated with conventional methods of disulfide modification. Biological evaluation of the synthesized conjugates demonstrates excellent selectivity for a HER2 positive cell line over the control, with no dark toxicity observed in either case.
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Affiliation(s)
- Francesca Bryden
- Department of Chemistry, University of Hull , Cottingham Road, Hull, HU6 7RX, United Kingdom
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19
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Topkaya D, Dumoulin F, Ahsen V, İşci Ü. Axial binding and host–guest interactions of a phthalocyanine resorcinarene cavitand hybrid. Dalton Trans 2014; 43:2032-7. [DOI: 10.1039/c3dt52732h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Giuntini F, Bryden F, Daly R, Scanlan EM, Boyle RW. Huisgen-based conjugation of water-soluble porphyrins to deprotected sugars: towards mild strategies for the labelling of glycans. Org Biomol Chem 2014; 12:1203-6. [DOI: 10.1039/c3ob42306a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Fully deprotected alkynyl-functionalised mono- and oligosaccharides undergo CuAAC-based conjugation with water-soluble porphyrin azides in aqueous environments.
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Affiliation(s)
| | | | - Robin Daly
- School of Chemistry
- Trinity Biomedical Sciences Institute
- Trinity College
- Dublin 2, Ireland
| | - Eoin M. Scanlan
- School of Chemistry
- Trinity Biomedical Sciences Institute
- Trinity College
- Dublin 2, Ireland
| | - Ross W. Boyle
- Department of Chemistry
- University of Hull
- Kingston-upon-Hull, UK
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21
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Yang L, Wu S, Lin B, Huang T, Chen X, Yan X, Han S. A targetable nanogenerator of nitric oxide for light-triggered cytotoxicity. J Mater Chem B 2013; 1:6115-6122. [DOI: 10.1039/c3tb21131b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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DePorter SM, Hendricks NK, Gray MA, McNaughton BR. A one-pot synthesis of micron-sized and nanoscale poly(N-acryloxysuccinimide-co-N-vinylpyrrolidone) particles. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Daly R, Vaz G, Davies AM, Senge MO, Scanlan EM. Synthesis and Biological Evaluation of a Library of Glycoporphyrin Compounds. Chemistry 2012; 18:14671-9. [DOI: 10.1002/chem.201202064] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Indexed: 01/21/2023]
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24
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Schaefer M, Hanik N, Kilbinger AFM. ROMP Copolymers for Orthogonal Click Functionalizations. Macromolecules 2012. [DOI: 10.1021/ma301061z] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Mark Schaefer
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg,
Switzerland
| | - Nils Hanik
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg,
Switzerland
| | - Andreas F. M. Kilbinger
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg,
Switzerland
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