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Zhang J, Liang C, Wei Z, Yang W, Ge W, Qu X, Si W, Wang W, Mou X, Dong X. TME-triggered MnSiO 3@Met@GOx nanosystem for ATP dual-inhibited starvation/chemodynamic synergistic therapy. Biomaterials 2022; 287:121682. [PMID: 35870264 DOI: 10.1016/j.biomaterials.2022.121682] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/05/2022] [Accepted: 07/14/2022] [Indexed: 12/14/2022]
Abstract
Adenosine triphosphate (ATP) is an essential substance for maintaining tumor cell survival and proliferation. Inhibiting the ATP-producing pathways has emerged as a promising cancer treatment strategy. However, the antitumor efficiency of ATP inhibitors is compromised by the inter-compensation of multiple ATP-producing pathways in tumor cells and biological barriers in the complex tumor microenvironment (TME). Herein, we developed metformin (Met) and glucose oxidase (GOx) co-loaded manganese silicon nanoplatform MnSiO3@Met@GOx (MMG) for TME-responsive ATP dual inhibited starvation/chemodynamic synergistic therapy. Under the mildly acidic conditions in TME, MMG was decomposed, releasing Met and GOx for effective ATP suppression by inhibiting oxidative phosphorylation (OXPHOS) and aerobic glycolysis pathways, respectively. Meanwhile, GOx-catalyzed glucose oxidation increased tumor acidity and hydrogen peroxide (H2O2) concentration in tumors, which not only accelerated MMG decomposition and drug release but also promoted manganese ions-mediated Fenton-like reaction. In vitro and in vivo experiments further demonstrated the effectiveness and biosafety of MMG-based synergistic therapy. This study provides a novel strategy for tumor treatment based on tumor metabolism regulation.
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Affiliation(s)
- Jiayao Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China
| | - Chen Liang
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, 310014, China
| | - Ziye Wei
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China
| | - Wanlan Yang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China
| | - Wei Ge
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China
| | - Xinyu Qu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China
| | - Weili Si
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China.
| | - Wenjun Wang
- School of Physical Science and Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Xiaozhou Mou
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, 310014, China.
| | - Xiaochen Dong
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, China; School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
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2
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Nasir Z, Ali A, Alam MF, Shoeb M, Nusrat Jahan S. Immobilization of GOx Enzyme on SiO 2-Coated Ni-Co Ferrite Nanocomposites as Magnetic Support and Their Antimicrobial and Photocatalytic Activities. ACS OMEGA 2021; 6:33554-33567. [PMID: 34926904 PMCID: PMC8675013 DOI: 10.1021/acsomega.1c04360] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/18/2021] [Indexed: 05/11/2023]
Abstract
The present study used a sol-gel auto-combustion approach to make silica (SiO2)-coated Ni-Co ferrite nanocomposites that would be used as a platform for enzyme immobilization. Using glutaraldehyde as a coupling agent, glucose oxidase (GOx) was covalently immobilized on this magnetic substrate. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM), and fourier transform infrared spectroscopy (FTIR) was used to determine the structural analysis and morphology of Ni-Co ferrite/SiO2 nanocomposites. FTIR spectra confirmed the binding of GOx to Ni-Co ferrite/SiO2 nanocomposites, with a loading efficiency of around 85%. At alkaline pH and higher temperature, the immobilized GOx enzyme exhibited increased catalytic activity. After 10 times of reuses, it still had 69% catalytic activity. Overall, the immobilized GOx displayed higher operational stability than the free enzyme under severe circumstances and was easily recovered by magnetic separation. With increased doping concentration of the nanocomposites, the photocatalytic activity was assessed using a degradation process in the presence of methylene blue dye under UV light irradiation, which revealed that the surface area of the nanocomposites with increased doping concentration played a significant role in improving photocatalytic activity. The antibacterial activity of Ni-Co ferrite/SiO2 nanocomposites was assessed using the agar well diffusion method against Escherichia coli, a gram-negative bacteria (ATCC 25922). Consequently, it was revealed that doping of Ni2+ and Co2+ in Fe2O4/SiO2 nanocomposites at varied concentrations improved their antibacterial properties.
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Affiliation(s)
- Zeba Nasir
- Department
of Chemistry, Aligarh Muslim University, Aligarh, UP 202 002, India
| | - Abad Ali
- Department
of Chemistry, Aligarh Muslim University, Aligarh, UP 202 002, India
| | - Md. Fazle Alam
- Interdisciplinary
Biotechnology Unit, Aligarh Muslim University, Aligarh, UP 202 002, India
- Key
Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, People’s Republic
of China
| | - Mohd Shoeb
- Department
of Applied Chemistry, Z.H. College of Engg. & Tech., Aligarh Muslim University, Aligarh, UP 202
002, India
| | - Shaikh Nusrat Jahan
- Department
of Zoology, G.M. Momin Women’s College, University of Mumbai, Bhiwandi, Mumbai 421302, India
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3
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Choi H, Kim JJ, Mo YH, Reddy BM, Park SE. Novelty of Dynamic Process in the Synthesis of Biocompatible Silica Nanotubes by Biomimetic Glycyldodecylamide as a Soft Template. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10707-10714. [PMID: 28920442 DOI: 10.1021/acs.langmuir.7b02881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A dynamic process in the synthesis of silica nanotubes (SNTs) by utilizing glycyldodecylamide (GDA) as a soft template was thoroughly investigated. The morphological evolution from GDA to SNTs was deeply explored to elucidate the formation mechanism for optimizing the synthesis procedure. Various analytical tools, namely, XRD, FTIR, SEM, TEM, Z-potential, and N2 adsorption/desorption isotherms, were employed during the synthesis procedure. The interactive structure of GDA was also investigated using TEM-EDX as a function of aging time. These studies revealed the stepwise morphology of nanograin, nanofiber, curved plate, and nanotube in the ethanol/water solution when aged at room temperature. The supramolecular GDA molded the vesicle type nanostructure which was surrounded by silica and facilitated the formation of uniform SNTs. The stimulus for GDA to be curved into a vesicle was the intermolecular hydrogen bonding between adjacent amide groups of the template molecules. This was illustrated by FTIR spectra of GDA-silica intermediate by detecting the transition of amide I peak from 1678 to 1635 cm-1. The effect of hydrogen bonding became stronger when the sample was aged.
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Affiliation(s)
- Hyejung Choi
- Laboratory of Nano-Green Catalysis & Nano-center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University , Incheon 402-751, Republic of Korea
| | - Joong-Jo Kim
- Laboratory of Nano-Green Catalysis & Nano-center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University , Incheon 402-751, Republic of Korea
| | - Yong-Hwan Mo
- Laboratory of Nano-Green Catalysis & Nano-center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University , Incheon 402-751, Republic of Korea
| | - Benjaram M Reddy
- Laboratory of Nano-Green Catalysis & Nano-center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University , Incheon 402-751, Republic of Korea
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology , Uppal Road, Hyderabad-500 007, India
| | - Sang-Eon Park
- Laboratory of Nano-Green Catalysis & Nano-center for Fine Chemicals Fusion Technology, Department of Chemistry, Inha University , Incheon 402-751, Republic of Korea
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4
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Liu D, Chen Z, Long J, Zhao Y, Du X. Immobilization of Penicillin Acylase on Macroporous Adsorption Resin CLX1180 Carrier. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21717] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Donglei Liu
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 Gansu China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu China
| | - Zhenbin Chen
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 Gansu China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu China
| | - Jiapeng Long
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 Gansu China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu China
| | - Yingyu Zhao
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 Gansu China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu China
| | - Xueyan Du
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials; Lanzhou University of Technology; Lanzhou 730050 Gansu China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu China
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5
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Sun W, Vallooran JJ, Mezzenga R. Enzyme Kinetics in Liquid Crystalline Mesophases: Size Matters, But Also Topology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4558-4565. [PMID: 25806598 DOI: 10.1021/acs.langmuir.5b00579] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Lyotropic liquid crystalline systems (LLCs) are excellent immobilizing carriers for enzymes, due to their biocompatibility and well-defined pore nanostructure. Here we show that the liquid crystalline mesophase topology can greatly influence the enzymatic activity in a typical peroxidase (Horseradish peroxidase, HRP) enzymatic reaction. Enzyme kinetics was investigated in different LLC mesophases based on monolinolein, with varying symmetries and dimensions such as the 1D cylindrical inverse hexagonal phase (HII), the 2D planar lamellar phase (Lα), and two 3D bicontinuous cubic phases of double diamond (Pn3m) and gyroid (Ia3d) space groups. As expected, the mesophase with largest water channel size shows highest activity, regardless of the topology. Interestingly, however, when mesophases with different topologies have the same water channel size, then the topology plays the dominant role, and the enzyme showed the highest activity in the 3D tetra-fold connected Pn3m, followed by the Ia3d with trifold connectivity, and finally the 1D HII phase. This study demonstrates that the enzymatic activity in LLC mesophases depends on both the water channel size and the topology of the mesophase.
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Affiliation(s)
- Wenjie Sun
- ETH Zurich, Department of Health Sciences and Technology, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Jijo J Vallooran
- ETH Zurich, Department of Health Sciences and Technology, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Raffaele Mezzenga
- ETH Zurich, Department of Health Sciences and Technology, Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
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6
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Zhao F, Li H, Wang X, Wu L, Hou T, Guan J, Jiang Y, Xu H, Mu X. CRGO/alginate microbeads: an enzyme immobilization system and its potential application for a continuous enzymatic reaction. J Mater Chem B 2015; 3:9315-9322. [DOI: 10.1039/c5tb01508a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hybrid bio-inorganic microbeads composed of CRGO–enzyme and alginate exhibited better stability and higher environmental tolerance, which can be used in a continuous fixed-bed enzymatic reaction.
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Affiliation(s)
- Fuhua Zhao
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Hui Li
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Xicheng Wang
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Lin Wu
- Qingdao Technical College
- Qingdao
- China
| | - Tonggang Hou
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Jing Guan
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Yijun Jiang
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Huanfei Xu
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Xindong Mu
- Key Laboratory of Bio-based Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
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7
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Chen S, Shi X, Chinnathambi S, Hanagata N. Large-scale fabrication of free-standing, micropatterned silica nanotubes via a hybrid hydrogel-templated route. Adv Healthc Mater 2013; 2:1091-5. [PMID: 23386331 DOI: 10.1002/adhm.201200374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 11/19/2012] [Indexed: 11/11/2022]
Abstract
Free-standing, micropatterned silica nanotube membranes are in situ fabricated using a micropatterned silica-coated collagen hybrid hydrogel as template. They are substrate-free, and not only maintained their micropatterned microstructure well, but also exhibited strong cell contact guidance ability to direct cell alignment and differentiation, indicating their good potential for biomedical applications.
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Affiliation(s)
- Song Chen
- JSPS Research Fellow, 8 Ichibancho, Chiyoda-ku, Tokyo 102-8472, Japan; Biomaterials Unit, National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan.
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8
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Sun C, Chen L, Xu F, Zhu P, Luan J, Mao C, Shen J. Hemocompatible and antibiofouling PU-F127 nanospheres platform for application to glucose detection in whole blood. J Mater Chem B 2013; 1:801-809. [DOI: 10.1039/c2tb00396a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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10
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Zhou H, Yang L, Li W, Shou Q, Xu P, Li W, Wang F, Yu P, Liu H. Improving the Stability of Immobilized Penicillin G Acylase via the Modification of Supports With Ionic Liquids. Ind Eng Chem Res 2012. [DOI: 10.1021/ie202745c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huacong Zhou
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Liangrong Yang
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei Li
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Qinghui Shou
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Peng Xu
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Wensong Li
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Fuchun Wang
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Pinhua Yu
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
| | - Huizhou Liu
- State Key
Laboratory of Biochemical Engineering, Key Laboratory of Green Process
and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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11
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Yang P, Gai S, Lin J. Functionalized mesoporous silica materials for controlled drug delivery. Chem Soc Rev 2012; 41:3679-98. [DOI: 10.1039/c2cs15308d] [Citation(s) in RCA: 1150] [Impact Index Per Article: 95.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Organic–inorganic nanotube hybrids: Organosilica-nanotubes containing ethane, ethylene and acetylene groups. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.03.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Seo S, Lee JH, Cho Y, Kim JG, Kim C, Jung JH. Distinctly Different Chemical Functionalities on the Internal and the External Surfaces of Silica Nanotubes, and Their Applications as Multi-Chemosensors. Chemistry 2011; 17:7433-7. [DOI: 10.1002/chem.201100011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 03/03/2011] [Indexed: 11/12/2022]
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14
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Yang X, Tang H, Cao K, Song H, Sheng W, Wu Q. Templated-assisted one-dimensional silica nanotubes: synthesis and applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm04516k] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Zhai R, Zhang B, Liu L, Xie Y, Zhang H, Liu J. Immobilization of enzyme biocatalyst on natural halloysite nanotubes. CATAL COMMUN 2010. [DOI: 10.1016/j.catcom.2010.09.030] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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16
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Yang YJ, Tao X, Hou Q, Ma Y, Chen XL, Chen JF. Mesoporous silica nanotubes coated with multilayered polyelectrolytes for pH-controlled drug release. Acta Biomater 2010; 6:3092-100. [PMID: 20197128 DOI: 10.1016/j.actbio.2010.02.042] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 02/10/2010] [Accepted: 02/24/2010] [Indexed: 11/16/2022]
Abstract
Two kinds of inorganic/organic hybrid composites based on mesoporous silica nanotubes (MSNTs) and pH-responsive polyelectrolytes have been developed as pH-controlled drug delivery systems via the layer by layer self-assembly technique. One system was based on alternatively loading poly(allylamine hydrochloride) and sodium poly(styrene sulfonate) onto as-prepared MSNTs to load and release the positively charged drug doxorubicin. The other system was synthesized by alternately coating sodium alginate and chitosan onto amine-functionalized MSNTs, which were used as vehicles for the loading and release of the negatively charged model drug sodium fluorescein. Controlled release of the drug molecules from these delivery systems was achieved by changing the pH value of the release medium. The results of in vitro cell cytotoxicity assays indicated that the cell killing efficacy of the loaded doxorubicin against human fibrosarcoma (HT-1080) and human breast adenocarcinoma (MCF-7) cells was pH dependent. Thus, these hybrid composites could be potentially applicable as pH-controlled drug delivery systems.
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Affiliation(s)
- Yun-Jie Yang
- Key Lab for Nanomaterials of the Ministry of Education, Beijing University of Chemical Technology, Bei San Huan Dong Road 15, Beijing 100029, People's Republic of China
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Blin J, Carteret C, Bleta R, Stébé M. Preparation and characterization of mesoporous materials from a nonionic fluorinated surfactant: Adsorption of glucose oxidase. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2009.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Fluorescent mesoporous silica nanotubes incorporating CdS quantum dots for controlled release of ibuprofen. Acta Biomater 2009; 5:3488-96. [PMID: 19442764 DOI: 10.1016/j.actbio.2009.05.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 04/03/2009] [Accepted: 05/07/2009] [Indexed: 11/22/2022]
Abstract
Mesoporous silica nanotubes (MSNTs) and amine-functionalized MSNTs (NH(2)-MSNTs) have been successfully synthesized via a sol-gel route using needle-like CaCO(3) nanoparticles as inorganic templates and post-modification with 3-aminopropyltriethoxysilane. Subsequently, the preformed nanotubes were functionalized with blue fluorescent CdS quantum dots, as demonstrated by transmission electron microscopy and confocal laser scanning microscopy. The morphology and microstructure of the produced materials were characterized by scanning electron microscopy and N(2) adsorption-desorption measurements. A comparative study of the capacity of several kinds of nanotube materials to store ibuprofen indicated that the drug-loading amount in CdS-NH(2)-MSNTs (CdS-incorporated NH(2)-MSNTs) could reach up to 740 mg/g silica, similar to that in as-prepared MSNTs (762 mg/g silica) and NH(2)-MSNTs (775 mg/g silica). Drug release studies in simulated body fluid revealed that the loaded ibuprofen released from amine-functionalized systems at a significantly lower release rate as compared to that from amine-free systems, and the incorporation of CdS quantum dots had nearly no effect on the ibuprofen release process. Further study on the ibuprofen release from CdS-NH(2)-MSNTs in other media, i.e. borate buffer saline, pure water and normal saline, indicated that CdS-NH(2)-MSNTs are pH- and ion-sensitive drug carriers, which should facilitate controlled drug delivery and disease therapy.
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19
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Huang Z, Chen Y, Zhou W, Guo Z. Preparation of silica microtubes by surface-initiated atom transfer radical polymerization from microfiber templates. Polym Bull (Berl) 2009. [DOI: 10.1007/s00289-009-0046-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Liang RP, Jiang JL, Qiu JD. Preparation of GOD/Sol-Gel Silica Film on Prussian Blue Modified Electrode for Glucose Biosensor Application. ELECTROANAL 2008. [DOI: 10.1002/elan.200804370] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Jia WZ, Wang K, Zhu ZJ, Song HT, Xia XH. One-step immobilization of glucose oxidase in a silica matrix on a Pt electrode by an electrochemically induced sol-gel process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:11896-11900. [PMID: 17929847 DOI: 10.1021/la7020269] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We demonstrate here that the electrochemical generation of hydroxyl ions and hydrogen bubbles can be used to induce the synthesis of enzyme- or protein-encapsulated 3D porous silica structure on the surface of noble metal electrodes. In the present work, the one-step synthesis of a glucose oxidase (GOD)-encapsulated silica matrix on a platinum electrode is presented. In this process, glucose oxidase was mixed with ethanol and TEOS to form a doped precursory sol solution. The electrochemically generated hydrogen bubbles at negative potentials assisted the formation of the porous structure of a GOD-encapsulated silica gel, and then the one-step immobilization of enzyme into the silica matrix was achieved. Scanning electron microscopy (SEM) and scanning electrochemical microscopy (SECM) characterizations showed that the GOD-encapsulated silica matrix adhered to the electrode surface effectively and had an interconnected porous structure. Because the pores started at the electrode surface, their sizes increased gradually along the distance away from the electrode and reached maximum at the solution side, and effective mass transport to the electrode surface could be achieved. The entrapped enzyme in the silica matrix retained its activity. The present glucose biosensor had a short response time of 2 s and showed a linear response to glucose from 0 to 10 mM with a correlation coefficient of 0.9932. The detection limit was estimated to be 0.01 mM at a signal-to-noise ratio of 3. The apparent Michaelis-Menten constant (K m app) and the maximum current density were determined to be 20.3 mM and 112.4 microA cm-2, respectively. The present method offers a facile way to fabricate biosensors and bioelectronic devices in situ.
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Affiliation(s)
- Wen-Zhi Jia
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
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