51
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Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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52
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Liu X, Huang N, Li H, Wang H, Jin Q, Ji J. Multidentate polyethylene glycol modified gold nanorods for in vivo near-infrared photothermal cancer therapy. ACS APPLIED MATERIALS & INTERFACES 2014; 6:5657-5668. [PMID: 24673744 DOI: 10.1021/am5001823] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Gold nanorods (AuNRs), because of their strong absorption of near-infrared (NIR) light, are very suitable for in vivo photothermal therapy of cancer. However, appropriate surface modification must be performed on AuNRs before their in vivo application because of the high toxicity of their original stabilizer cetyltrimethylammonium bromide. Multidentate ligands have attracted a lot of attention for modification of inorganic nanoparticles (NPs) because of their high ligand affinity and multifunctionality, while the therapeutic effect of multidentate ligands modified NPs in vivo remains unexplored. Here, we modified AuNRs with a polythiol PEG-based copolymer. The multidentate PEG coated AuNRs (AuNR-PTPEGm950) showed good stabilities in high saline condition and wide pH range. And they had much stronger resistance to ligand competition of dithiothreitol (DTT) than AuNRs coated by monothiol-anchored PEG. The AuNR-PTPEGm950 had very low cytotoxicity and showed high efficacy for the ablation of cancer cells in vitro. Moreover, the AuNR-PTPEGm950 showed good stability in serum, and they had a long circulation time in blood that led to a high accumulation in tumors after intravenous injection. In vivo photothermal therapy showed that tumors were completely cured without reoccurrence by one-time irradiation of NIR laser after a single injection of these multidentate PEG modified AuNRs.
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Affiliation(s)
- Xiangsheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, China
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53
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Ma Y, Li Y, Ma S, Zhong X. Highly bright water-soluble silica coated quantum dots with excellent stability. J Mater Chem B 2014; 2:5043-5051. [DOI: 10.1039/c4tb00458b] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile Stöber method for the synthesis of isolated silica coated QDs with high PL efficiencies, tunable small size and excellent stability leads to the practical bioapplication as robust biomarkers.
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Affiliation(s)
- Yunfei Ma
- Shanghai Key Laboratory of Functional Materials Chemistry
- Institute of Applied Chemistry
- East China University of Science and Technology
- Shanghai 200237, China
| | - Yan Li
- Shanghai Key Laboratory of Functional Materials Chemistry
- Institute of Applied Chemistry
- East China University of Science and Technology
- Shanghai 200237, China
| | - Shijian Ma
- Shanghai Key Laboratory of Functional Materials Chemistry
- Institute of Applied Chemistry
- East China University of Science and Technology
- Shanghai 200237, China
| | - Xinhua Zhong
- Shanghai Key Laboratory of Functional Materials Chemistry
- Institute of Applied Chemistry
- East China University of Science and Technology
- Shanghai 200237, China
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54
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Graña Suárez L, Verboom W, Huskens J. Cyclodextrin-based supramolecular nanoparticles stabilized by balancing attractive host–guest and repulsive electrostatic interactions. Chem Commun (Camb) 2014; 50:7280-2. [DOI: 10.1039/c4cc03136a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multicomponent, negatively charged supramolecular nanoparticles were prepared without the need of a stopper. Their size and stability are controlled owing to a balance of forces between attractive supramolecular and repulsive electrostatic interactions.
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Affiliation(s)
- Laura Graña Suárez
- Molecular Nanofabrication group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede, The Netherlands
| | - Willem Verboom
- Molecular Nanofabrication group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede, The Netherlands
| | - Jurriaan Huskens
- Molecular Nanofabrication group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede, The Netherlands
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55
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Zhang X, He X, Chen L, Zhang Y. A combination of distillation–precipitation polymerization and click chemistry: fabrication of boronic acid functionalized Fe3O4 hybrid composites for enrichment of glycoproteins. J Mater Chem B 2014; 2:3254-3262. [DOI: 10.1039/c4tb00379a] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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56
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Abstract
Quantum Dots (QDs) are semiconductor nanocrystals with distinct photophysical properties finding applications in biology, biosensing, and optoelectronics. Polymeric coatings of QDs are used primarily to provide long-term colloidal stability to QDs dispersed in solutions and also as a source of additional functional groups used in further chemical derivatization of the nanoparticles. We review the coating methods, including multidentate and amphiphilic polymeric coatings, and grafting-to and grafting-from approaches. We highlight the most commonly used polymers and discuss how their chemical structure influences the coating properties.
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Affiliation(s)
- Nikodem Tomczak
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602.
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57
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Liu X, Cao J, Li H, Li J, Jin Q, Ren K, Ji J. Mussel-inspired polydopamine: a biocompatible and ultrastable coating for nanoparticles in vivo. ACS NANO 2013; 7:9384-95. [PMID: 24010584 DOI: 10.1021/nn404117j] [Citation(s) in RCA: 416] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Bioinspired polydopamine (PDA) has served as a universal coating to nanoparticles (NPs) for various biomedical applications. However, one remaining critical question is whether the PDA shell on NPs is stable in vivo. In this study, we modified gold nanoparticles (GNPs) with finely controlled PDA nanolayers to form uniform core/shell nanostructures (GNP@PDA). In vitro study showed that the PDA-coated GNPs had low cytotoxicity and could smoothly translocate to cancer cells. Transmission electron microscopy (TEM) analysis demonstrated that the PDA nanoshells were intact within cells after 24 h incubation. Notably, we found the GNP@PDA could partially escape from the endosomes/lysosomes to cytosol and locate close to the nucleus. Furthermore, we observed that the PDA-coated NPs have very different uptake behavior in two important organs of the liver and spleen: GNP@PDA in the liver were mainly uptaken by the Kupffer cells, while the GNP@PDA in the spleen were uptaken by a variety of cells. Importantly, we proved the PDA nanoshells were stable within cells of the liver and spleen for at least six weeks, and GNP@PDA did not show notable histological toxicity to main organs of mice in a long time. These results provided the direct evidence to support that the PDA surface modification can serve as an effective strategy to form ultrastable coatings on NPs in vivo, which can improve the intracellular delivery capacity and biocompatibility of NPs for biomedical application.
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Affiliation(s)
- Xiangsheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou, Zhejiang 310027, China
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58
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Bartczak D, Muskens OL, Sanchez-Elsner T, Kanaras AG, Millar TM. Manipulation of in vitro angiogenesis using peptide-coated gold nanoparticles. ACS NANO 2013; 7:5628-5636. [PMID: 23713973 DOI: 10.1021/nn402111z] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We demonstrate the deliberate activation or inhibition of invitro angiogenesis using functional peptide coated gold nanoparticles. The peptides, anchored to oligo-ethylene glycol capped gold nanospheres, were designed to selectively interact with cell receptors responsible for activation or inhibition of angiogenesis. The functional particles are shown to influence significantly the extent and morphology of vascular structures, without causing toxicity. Mechanistic studies show that the nanoparticles have the ability to alter the balance between naturally secreted pro- and anti-angiogenic factors, under various biological conditions. Nanoparticle-induced control over angiogenesis opens up new directions in targeted drug delivery and therapy.
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Affiliation(s)
- Dorota Bartczak
- Institute for Life Sciences, Physics and Astronomy, Faculty of Physical Sciences and Engineering, University of Southampton, SO17 1BJ, UK
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59
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Liu X, Huang H, Liu G, Zhou W, Chen Y, Jin Q, Ji J. Multidentate zwitterionic chitosan oligosaccharide modified gold nanoparticles: stability, biocompatibility and cell interactions. NANOSCALE 2013; 5:3982-3991. [PMID: 23546384 DOI: 10.1039/c3nr00284e] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Surface engineering of nanoparticles plays an essential role in their colloidal stability, biocompatibility and interaction with biosystems. In this study, a novel multidentate zwitterionic biopolymer derivative is obtained from conjugating dithiolane lipoic acid and zwitterionic acryloyloxyethyl phosphorylcholine to the chitosan oligosaccharide backbone. Gold nanoparticles (AuNPs) modified by this polymer exhibit remarkable colloidal stabilities under extreme conditions including high salt conditions, wide pH range and serum or plasma containing media. The AuNPs also show strong resistance to competition from dithiothreitol (as high as 1.5 M). Moreover, the modified AuNPs demonstrate low cytotoxicity investigated by both MTT and LDH assays, and good hemocompatibility evaluated by hemolysis of human red blood cells. In addition, the intracellular fate of AuNPs was investigated by ICP-MS and TEM. It showed that the AuNPs are uptaken by cells in a concentration dependent manner, and they can escape from endosomes/lysosomes to cytosol and tend to accumulate around the nucleus after 24 h incubation but few of them are excreted out of the cells. Gold nanorods are also stabilized by this ligand, which demonstrates robust dispersion stability and excellent hemocompatibility. This kind of multidentate zwitterionic chitosan derivative could be widely used for stabilizing other inorganic nanoparticles, which will greatly improve their performance in a variety of bio-related applications.
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Affiliation(s)
- Xiangsheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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60
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Jiang S, Win KY, Liu S, Teng CP, Zheng Y, Han MY. Surface-functionalized nanoparticles for biosensing and imaging-guided therapeutics. NANOSCALE 2013; 5:3127-48. [PMID: 23478880 DOI: 10.1039/c3nr34005h] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this article, the very recent progress of various functional inorganic nanomaterials is reviewed including their unique properties, surface functionalization strategies, and applications in biosensing and imaging-guided therapeutics. The proper surface functionalization renders them with stability, biocompatibility and functionality in physiological environments, and further enables their targeted use in bioapplications after bioconjugation via selective and specific recognition. The surface-functionalized nanoprobes using the most actively studied nanoparticles (i.e., gold nanoparticles, quantum dots, upconversion nanoparticles, and magnetic nanoparticles) make them an excellent platform for a wide range of bioapplications. With more efforts in recent years, they have been widely developed as labeling probes to detect various biological species such as proteins, nucleic acids and ions, and extensively employed as imaging probes to guide therapeutics such as drug/gene delivery and photothermal/photodynamic therapy.
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Affiliation(s)
- Shan Jiang
- Institute of Materials Research and Engineering, A*STAR, 3 Research Link, Singapore 117602
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61
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Pombo-García K, Zarschler K, Barreto JA, Hesse J, Spiccia L, Graham B, Stephan H. Design, synthesis, characterisation and in vitro studies of hydrophilic, colloidally stable, 64Cu(ii)-labelled, ultra-small iron oxide nanoparticles in a range of human cell lines. RSC Adv 2013. [DOI: 10.1039/c3ra43726d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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62
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Feigl CA, Barnard AS, Russo SP. Modelling polar wurtzite ZnS nanoparticles: the effect of sulphur supersaturation on size- and shape-dependent phase transformations. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33758d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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