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Belkahla H, Boudjemaa R, Caorsi V, Pineau D, Curcio A, Lomas JS, Decorse P, Chevillot-Biraud A, Azaïs T, Wilhelm C, Randriamahazaka H, Hémadi M. Carbon dots, a powerful non-toxic support for bioimaging by fluorescence nanoscopy and eradication of bacteria by photothermia. Nanoscale Adv 2019; 1:2571-2579. [PMID: 36132715 PMCID: PMC9418816 DOI: 10.1039/c9na00140a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 05/17/2019] [Indexed: 05/02/2023]
Abstract
Carbon Dots (CDs) are innovative materials which have potential applications in many fields, including nanomedicine, energy and catalysis. Here CDs were produced by the alkali-assisted ultrasonic route and characterized by several techniques to determine their composition and properties. Fluorescence nanoscopy using single-molecule localization microscopy shows that they have very good photophysical properties and a remarkable blinking behaviour at 405 nm. Moreover, these CDs are a safe material, non-toxic towards different cell lines (cancer and non-cancer cells) even at very high concentration, reflecting an excellent biocompatibility. Photothermia, i.e. their heating capacity under laser irradiation, was evaluated at two wavelengths and at several power densities. The resulting temperature increment was high (5 < ΔT < 45 °C) and appropriate for biomedical applications. Bioimaging and photothermia were then performed on E. coli, a Gram(-) bacterium, incubated with CDs. Remarkably, by photothermia at 680 nm (0.3, 1 and 1.9 W cm-2) or 808 nm (1.9 W cm-2), CDs are able to eradicate bacteria in their exponential and stationary phases. Images obtained by 3D super-resolution microscopy clearly show the different CD distributions in surviving bacteria after mild photothermal treatment. These results confirm that CDs are multifunctional materials with a wide range of biomedical applications.
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Affiliation(s)
- H Belkahla
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - R Boudjemaa
- Abbelight 6 rue Jean Calvin 75005 Paris France
| | - V Caorsi
- Abbelight 6 rue Jean Calvin 75005 Paris France
| | - D Pineau
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - A Curcio
- Laboratoire Matières et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7057, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13 France
| | - J S Lomas
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - P Decorse
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - A Chevillot-Biraud
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - T Azaïs
- Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Université, CNRS-UMR 7574, Collège de France 4 place Jussieu 75005 Paris France
| | - C Wilhelm
- Laboratoire Matières et Systèmes Complexes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7057, 10 rue Alice Domon et Léonie Duquet 75205 Paris Cedex 13 France
| | - H Randriamahazaka
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - M Hémadi
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
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Hai J, Piraux H, Mazarío E, Volatron J, Ha-Duong NT, Decorse P, Lomas JS, Verbeke P, Ammar S, Wilhelm C, El Hage Chahine JM, Hémadi M. Maghemite nanoparticles coated with human serum albumin: combining targeting by the iron-acquisition pathway and potential in photothermal therapies. J Mater Chem B 2017; 5:3154-3162. [PMID: 32263713 DOI: 10.1039/c7tb00503b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Human serum albumin (HSA), the most abundant plasma protein in human blood, is a natural transport vehicle with multiple ligand binding sites. It, therefore, constitutes an attractive candidate for drug delivery. Targeting may occur via the most known interaction of the protein with the neonatal Fc receptor (FcRn). Here, we investigate another HSA delivery path, involving the transferrin receptor, and we elaborate a maghemite-HSA nanohybrid, opening up new opportunities for medical applications. Fluorescence spectrophotometric titration and size-exclusion chromatography were used to substantiate, in cell-free assays, an interaction between HSA and the transferrin receptor R1. This occurs with a dissociation constant, KD of 6.7 nM. This interaction was confirmed in HeLa cell culture where, by confocal microscopy, rhodamine-labeled HSA is shown to be internalized. HSA was then covalently conjugated onto maghemite nanoparticles (NPs) to give a NP-HSA nanohybrid. The therapeutic potential of this hybrid was demonstrated through its heating capacity in magnetic hyperthermia (MH) and near-infrared (NIR) photothermia (PT). In particular, the Specific Absorption Rate (SAR) in the PT Therapy (PTT) mode, using a 808 nm NIR-LASER (1 W cm-2) and at iron concentration as low as 2.5 mM, was found to be very high, equal to 1870 W g-1 with a temperature increment of 9.2 °C. The nanohybrids incubated with HeLa cells were mainly localized at the cell surface. When the PTT mode was applied under the same conditions as in vitro, mortality was higher in HeLa cells than in fibroblasts (non-malignant cells). Cytotoxicity was checked in both cell lines without the PTT mode; the nanohybrids do not seem to affect cell viability. These results make the nanohybrids very promising agents for NIR-PT and for targeting in cancer therapy, since non-malignant cells were not damaged.
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Affiliation(s)
- J Hai
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité, CNRS-UMR 7086, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France.
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Hegarty AF, Dubois JE, Lomas JS, Wright WV, Bergmann ED. Bromination of 1,1-diphenylethylenes. II. Resonance saturation and geometrical effects on the reactivity multiply substituted derivatives. J Org Chem 2002. [DOI: 10.1021/jo00979a003] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vaissermann J, Lomas JS. A Highly Strained Tertiary Acetate: 2,2'-Spirobiadamant-1-yl Acetate. Acta Crystallogr C 1996. [DOI: 10.1107/s0108270196007639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Anderson JE, Kirsch PA, Lomas JS. Six-fold rotational potentials in substituted ethanes; a dynamic n.m.r. study of tri-t-alkylmethanols. ACTA ACUST UNITED AC 1988. [DOI: 10.1039/c39880001065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hough E, Lomas JS. Structure of the tert-butyl-ortho-tolylcarbinol, 2,2,4,4-tetramethyl-3-(2-methyl-4-methoxyphenyl)pentan-3-ol, C17H28O2. Acta Crystallogr C 1984. [DOI: 10.1107/s0108270184010131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Cum G, de la Mare PBD, Lomas JS, Johnson MD. The kinetics and mechanisms of aromatic halogen substitution. Part XXV. The chlorination of 2-methylnaphthalene. ACTA ACUST UNITED AC 1967. [DOI: 10.1039/j29670000244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de la Mare PBD, Koenigsberger R, Lomas JS. The alkaline dehydrochlorination of some naphthalene tetrachlorides and related compounds. ACTA ACUST UNITED AC 1966. [DOI: 10.1039/j29660000834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kettle SFA, de la Mare PBD, Lomas JS, Pacini HA, Pavlath AE, Cotter JL, Gore PH, Hoskins JA, Wladislaw B, Giora A, Miller JD, Prince RH, Keen IM, Tuck DG, Faithful BD, Haslam E, Marriott JE, Gill GB, Williams GH, Barker CC, Hallas G, Thornber MN, Crombie DA, Shaw S, Bird CW, Colvin EW, Parker W, Fields EK, Leslie J, Hamer D, Hallas G, Downie IM, Morris G, Hiscock AK, Whitehurst JS, Green M, Tipping AE, van Es T, Staskun B, Trahanovsky WS, Young LB, Bristow PA, Khowaja M, Tillett JG, Fischer A, Hutchinson REJ, Topsom RD, Carruthers W, Watkins DAM, Knight JA, Roberts JC, Underwood JG. Notes. ACTA ACUST UNITED AC 1965. [DOI: 10.1039/jr9650005737] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de la Mare PBD, Johnson EA, Lomas JS. 1017. The kinetics and mechanisms of aromatic halogen substitution. Part XIX. Products and rates of chlorination of bridged biphenyls. ACTA ACUST UNITED AC 1964. [DOI: 10.1039/jr9640005317] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de la Mare PBD, Johnson EA, Lomas JS. 1134. The kinetics and mechanisms of aromatic halogen substitution. Part XVII. Chlorination of 9,10-dihydrophenanthrene. ACTA ACUST UNITED AC 1963. [DOI: 10.1039/jr9630005973] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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