101
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Yang B, Lv Y, Wang Q, Liu Y, An H, Feng J, Zhang X, Zhuo R. Template-module assembly to prepare low-molecular-weight gene transport system with enhanced transmembrane capability. Sci China Chem 2014. [DOI: 10.1007/s11426-013-5058-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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102
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Zhao J, Liu J, Han S, Deng H, Deng L, Liu J, Meng A, Dong A, Zhang J. Acid-induced disassemblable nanoparticles based on cyclic benzylidene acetal-functionalized graft copolymer via sequential RAFT and ATRP polymerization. Polym Chem 2014. [DOI: 10.1039/c3py01324c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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103
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Cantarelli IX, Pedroni M, Piccinelli F, Marzola P, Boschi F, Conti G, Sbarbati A, Bernardi P, Mosconi E, Perbellini L, Marongiu L, Donini M, Dusi S, Sorace L, Innocenti C, Fantechi E, Sangregorio C, Speghini A. Multifunctional nanoprobes based on upconverting lanthanide doped CaF2: towards biocompatible materials for biomedical imaging. Biomater Sci 2014; 2:1158-1171. [DOI: 10.1039/c4bm00119b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Lanthanide doped CaF2 nanoparticles are useful for in vivo optical and MR imaging and as nanothermometer probes, which do not induce pro-inflammatory cytokine secretion.
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Affiliation(s)
| | - Marco Pedroni
- Dipartimento di Biotecnologie
- Università di Verona and INSTM
- UdR Verona
- Verona, Italy
| | - Fabio Piccinelli
- Dipartimento di Biotecnologie
- Università di Verona and INSTM
- UdR Verona
- Verona, Italy
| | - Pasquina Marzola
- Dipartimento di Informatica
- Università di Verona and INSTM
- UdR Verona
- Verona, Italy
| | - Federico Boschi
- Dipartimento di Informatica
- Università di Verona and INSTM
- UdR Verona
- Verona, Italy
| | - Giamaica Conti
- Dipartimento di Scienze Neurologiche e del Movimento
- Università di Verona
- Verona, Italy
| | - Andrea Sbarbati
- Dipartimento di Scienze Neurologiche e del Movimento
- Università di Verona
- Verona, Italy
| | - Paolo Bernardi
- Dipartimento di Scienze Neurologiche e del Movimento
- Università di Verona
- Verona, Italy
| | - Elisa Mosconi
- Dipartimento di Scienze Neurologiche e del Movimento
- Università di Verona
- Verona, Italy
| | - Luigi Perbellini
- Dipartimento di Sanità Pubblica e Medicina di Comunità
- Università di Verona
- Verona, Italy
| | - Laura Marongiu
- Dipartimento di Patologia e Diagnostica
- Sezione di Patologia Generale
- Università di Verona
- Verona, Italy
| | - Marta Donini
- Dipartimento di Patologia e Diagnostica
- Sezione di Patologia Generale
- Università di Verona
- Verona, Italy
| | - Stefano Dusi
- Dipartimento di Patologia e Diagnostica
- Sezione di Patologia Generale
- Università di Verona
- Verona, Italy
| | - Lorenzo Sorace
- INSTM and Dipartimento di Chimica “U. Schiff”
- Università degli Studi di Firenze
- Firenze, Italy
| | - Claudia Innocenti
- INSTM and Dipartimento di Chimica “U. Schiff”
- Università degli Studi di Firenze
- Firenze, Italy
| | - Elvira Fantechi
- INSTM and Dipartimento di Chimica “U. Schiff”
- Università degli Studi di Firenze
- Firenze, Italy
| | | | - Adolfo Speghini
- Dipartimento di Biotecnologie
- Università di Verona and INSTM
- UdR Verona
- Verona, Italy
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104
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Huang YF, Chiang WH, Huang WC, Chen HH, Shen MY, Lin SC, Chern CS, Chiu HC. pH-responsive hierarchical transformation of charged lipid assemblies within polyelectrolyte gel layers with applications for controlled drug release and MR imaging contrast. J Mater Chem B 2014; 2:4988-4992. [DOI: 10.1039/c4tb00771a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cationic DOTAP assemblies within poly(acrylic acid) gel effectively modulate drug release and MR imaging contrast by pH-induced morphological transformation.
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Affiliation(s)
- Yi-Fong Huang
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
| | - Wen-Chia Huang
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
| | - Hsin-Hung Chen
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Ming-Yin Shen
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
- Department of Surgery
- National Taiwan University Hospital-Hsinchu Branch
| | - Sung-Chyr Lin
- Department of Chemical Engineering
- National Chung Hsing University
- Taichung 402, Taiwan
| | - Chorng-Shyan Chern
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106, Taiwan
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences
- National Tsing Hua University
- Hsinchu 300, Taiwan
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105
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Zhao J, Liu J, Xu S, Zhou J, Han S, Deng L, Zhang J, Liu J, Meng A, Dong A. Graft copolymer nanoparticles with pH and reduction dual-induced disassemblable property for enhanced intracellular curcumin release. ACS APPLIED MATERIALS & INTERFACES 2013; 5:13216-13226. [PMID: 24313273 DOI: 10.1021/am404213w] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nanoparticle (NP)-assisted drug delivery systems with disassemblable behaviors in response to intracellular microenvironment are urgently demanded in systemic cancer chemotherapy for enhanced intracellular drug release. Curcumin (CUR), an effective and safe anticancer agent, was limited by its water insolubility and poor bioavailability. Herein, pH and reduction dual-induced disassemblable NPs for high loading efficiency and improved intracellular release of CUR were developed based on an acid degradable cyclic benzylidene acetal groups (CBAs)-functionalized poly(2,4,6-trimethoxybenzylidene-1,1,1-tris(hydroxymethyl)ethane methacrylate)-g-SS-poly(ethylene glycol) (PTTMA-g-SS-PEG) graft copolymer, which was readily prepared via RAFT copolymerization and coupling reaction. The NPs self-assembled from PTTMA-g-SS-PEG copolymers were stable at physiological pH, and quickly disassembled in mildly acidic and reductive environments because of the hydrolysis of CBAs in hydrophobic PTTMA core and the cleavage of disulfide-linked detachable PEG shell. PTTMA-g-SS-PEG NPs exhibited excellent CUR loading capacity with drug loading content up to 19.2% and entrapment efficiency of 96.0%. Within 20 h in vitro, less than 15.0% of CUR was released from the CUR-loaded NPs in normal physiological conditions, whereas 94.3% was released in the presence of reductive agent and mildly acidic conditions analogous to the microenvironment in endosome/lysosome and cytoplasm. Confocal fluorescence microscopies revealed that the CUR-loaded PTTMA-g-SS-PEG NPs exhibited more efficiently intracellular CUR release for EC-109 cells than that of CUR-loaded reduction-unresponsive PTTMA-g-PEG NPs and free CUR. In vitro cytotoxicity studies displayed blank PTTMA-g-SS-PEG NPs showed low toxicity at concentrations up to 1.0 mg/mL, whereas CUR-loaded PTTMA-g-SS-PEG NPs demonstrated more efficient growth inhibition toward EC-109 and HepG-2 cells than reduction-unresponsive controls and free CUR. Therefore, the above results indicated that pH and reduction dual-induced disassemblable PTTMA-g-SS-PEG NPs may have emerged as superior nanocarriers for active loading and promoted intracellular drug delivery in systemic cancer chemotherapy.
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Affiliation(s)
- Junqiang Zhao
- School of Materials Science and Engineering, Tianjin University , Tianjin 300072, P.R. China
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106
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Liang R, Wang J, Wu X, Dong L, Deng R, Wang K, Sullivan M, Liu S, Wu M, Tao J, Yang X, Zhu J. Multifunctional biodegradable polymer nanoparticles with uniform sizes: generation and in vitro anti-melanoma activity. NANOTECHNOLOGY 2013; 24:455302. [PMID: 24145641 DOI: 10.1088/0957-4484/24/45/455302] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present a simple, yet versatile strategy for the fabrication of uniform biodegradable polymer nanoparticles (NPs) with controllable sizes by a hand-driven membrane-extrusion emulsification approach. The size and size distribution of the NPs can be easily tuned by varying the experimental parameters, including initial polymer concentration, surfactant concentration, number of extrusion passes, membrane pore size, and polymer molecular weight. Moreover, hydrophobic drugs (e.g., paclitaxel (PTX)) and inorganic NPs (e.g., quantum dots (QDs) and magnetic NPs (MNPs)) can be effectively and simultaneously encapsulated into the polymer NPs to form the multifunctional hybrid NPs through this facile route. These PTX-loaded NPs exhibit high encapsulation efficiency and drug loading density as well as excellent drug sustained release performance. As a proof of concept, the A875 cell (melanoma cell line) experiment in vitro, including cellular uptake analysis by fluorescence microscope, cytotoxicity analysis of NPs, and magnetic resonance imaging (MRI) studies, indicates that the PTX-loaded hybrid NPs produced by this technique could be potentially applied as a multifunctional delivery system for drug delivery, bio-imaging, and tumor therapy, including malignant melanoma therapy.
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Affiliation(s)
- Ruijing Liang
- Hubei Key Lab of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074,People's Republic of China
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107
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Wu X, Wang Z, Zhu D, Zong S, Yang L, Zhong Y, Cui Y. pH and thermo dual-stimuli-responsive drug carrier based on mesoporous silica nanoparticles encapsulated in a copolymer-lipid bilayer. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10895-903. [PMID: 24127854 DOI: 10.1021/am403092m] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A pH and thermo dual-controllable composite structure was developed as a triggerable drug delivery carrier. In such a drug carrier, a mesoporous silica nanoparticle (MSN) acts as the drug loading core, while a layer of copolymer-lipid serves as the dual-responsive gating shell. Specifically, the copolymer-lipid bilayer consists of natural phospholipids (soy phosphatidylcholine, SPC) and the poly(N-isopropylacrylamide-methacrylic acid-octadecyl acrylate) (p(NIPAM-MAA-ODA)) copolymer. With this structure, a high drug loading capacity and a sustained release effect could be provided by the MSN core, while a pH and thermo dual-responsive releasing ability could be offered by the copolymer-lipid bilayer. In addition, the introduction of SPC instead of the traditionally used phospholipids (such as dioleoyl phosphatidylethanolamine (DOPE) or dipalmitoyl phosphatidylcholine (DPPC)) results in a much lower cost and a better serum stability. Using doxorubicin (DOX) as the drug model, our results confirmed that either pH or temperature can trigger the drug release. However, much more drugs could be released by simultaneously controlling the pH and temperature. Furthermore, after being cocultured with cancer cells (MCF-7), the drug carriers transported DOX into the cells and exhibited a pH-sensitive release behavior. Since most tumor sites usually exhibit a more acidic environment or a higher temperature, the pH- and thermo-responsive releasing ability of this drug carrier is particularly useful and important for the targeted release at the tumor region. Thus, due to the powerful controlled releasing ability, the straightforward preparation method, and low cost, the demonstrated nanocarrier will have potential applications in controllable drug delivery and cancer therapy.
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Affiliation(s)
- Xin Wu
- Advanced Photonics Center, Southeast University , Nanjing 210096, China
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108
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Zhao J, Wang H, Liu J, Deng L, Liu J, Dong A, Zhang J. Comb-like amphiphilic copolymers bearing acetal-functionalized backbones with the ability of acid-triggered hydrophobic-to-hydrophilic transition as effective nanocarriers for intracellular release of curcumin. Biomacromolecules 2013; 14:3973-84. [PMID: 24107101 DOI: 10.1021/bm401087n] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The pH-responsive micelles have enormous potential as nanosized drug carriers for cancer therapy due to their physicochemical changes in response to the tumor intracellular acidic microenvironment. Herein, a series of comb-like amphiphilic copolymers bearing acetal-functionalized backbone were developed based on poly[(2,4,6-trimethoxybenzylidene-1,1,1-tris(hydroxymethyl) ethane methacrylate-co-poly(ethylene glycol) methyl ether methacrylate] [P(TTMA-co-mPEGMA)] as effective nanocarriers for intracellular curcumin (CUR) release. P(TTMA-co-mPEGMA) copolymers with different hydrophobic-hydrophilic ratios were prepared by one-step reversible addition fragmentation chain transfer (RAFT) copolymerization of TTMA and mPEGMA. Their molecular structures and chemical compositions were confirmed by (1)H NMR, Fourier transform infrared spectroscopy (FT-IR) and gel permeation chromatography (GPC). P(TTMA-co-mPEGMA) copolymers could self-assemble into nanosized micelles in aqueous solution and displayed low critical micelle concentration (CMC). All P(TTMA-co-mPEGMA) micelles displayed excellent drug loading capacity, due to the strong π-π conjugate action and hydrophobic interaction between the PTTMA and CUR. Moreover, the hydrophobic PTTMA chain could be selectively hydrolyzed into a hydrophilic backbone in the mildly acidic environment, leading to significant swelling and final disassembly of the micelles. These morphological changes of P(TTMA-co-mPEGMA) micelles with time at pH 5.0 were determined by DLS and TEM. The in vitro CUR release from the micelles exhibited a pH-dependent behavior. The release rate of CUR was significantly accelerated at mildly acidic pH of 4.0 and 5.0 compared to that at pH 7.4. Toxicity test revealed that the P(TTMA-co-mPEGMA) copolymers exhibited low cytotoxicity, whereas the CUR-loaded micelles maintained high cytotoxicity for HepG-2 and EC-109 cells. The results indicated that the novel P(TTMA-co-mPEGMA) micelles with low CMC, small and tunable sizes, high drug loading, pH-responsive drug release behavior, and good biocompatibility may have potential as hydrophobic drug delivery nanocarriers for cancer therapy with intelligent delivery.
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Affiliation(s)
- Junqiang Zhao
- School of Materials Science and Engineering, Tianjin University , Tianjin, 300072, People's Republic of China
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109
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Li Y, Gao GH, Lee DS. pH-sensitive polymeric micelles based on amphiphilic polypeptide as smart drug carriers. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26830] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi Li
- Departments of Polymer Science and Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Guang Hui Gao
- Departments of Polymer Science and Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Doo Sung Lee
- Departments of Polymer Science and Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
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110
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Zhang Z, Ding J, Chen X, Xiao C, He C, Zhuang X, Chen L, Chen X. Intracellular pH-sensitive supramolecular amphiphiles based on host–guest recognition between benzimidazole and β-cyclodextrin as potential drug delivery vehicles. Polym Chem 2013. [DOI: 10.1039/c3py00141e] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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