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Haruna A, Chong FK, Ho YC, Merican ZMA. Preparation and modification methods of defective titanium dioxide-based nanoparticles for photocatalytic wastewater treatment-a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:70706-70745. [PMID: 36044146 DOI: 10.1007/s11356-022-22749-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The rapid population growth and industrial expansion worldwide have created serious water contamination concerns. To curb the pollution issue, it has become imperative to use a versatile material for the treatment. Titanium dioxide (TiO2) has been recognized as the most-studied nanoparticle in various fields of science and engineering due to its availability, low cost, efficiency, and other fascinating properties with a wide range of applications in modern technology. Recent studies revealed the photocatalytic activity of the material for the treatment of industrial effluents to promote environmental sustainability. With the wide band gap energy of 3.2 eV, TiO2 can be activated under UV light; thus, many strategies have been proposed to extend its photoabsorption to the visible light region. In what follows, this has generated increasing attention to study its characteristics and structural modifications in different forms for photocatalytic applications. The present review provides an insight into the understanding of the synthesis methods of TiO2, the current progress in the treatment techniques for the degradation of wide environmental pollutants employing modified TiO2 nanoparticles, and the factors affecting its photocatalytic activities. Further, recent developments in using titania for practical applications, the approach for designing novel nanomaterials, and the prospects and opportunities in this exciting area have been discussed.
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Affiliation(s)
- Abdurrashid Haruna
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria.
- Centre of Innovative Nanostructures & Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia.
| | - Fai-Kait Chong
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Centre of Innovative Nanostructures & Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia
| | - Yeek-Chia Ho
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Centre for Urban Resource Sustainability, Institute for Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Zulkifli Merican Aljunid Merican
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Institute of Contaminant Management for Oil & Gas, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
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Assessment of the genotoxic potential of three novel composite nanomaterials using human lymphocytes and the fruit fly Drosophila melanogaster as model systems. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2021.100230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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3
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Ebadi M, Saifullah B, Buskaran K, Hussein MZ, Fakurazi S. Synthesis and properties of magnetic nanotheranostics coated with polyethylene glycol/5-fluorouracil/layered double hydroxide. Int J Nanomedicine 2019; 14:6661-6678. [PMID: 31695362 PMCID: PMC6707435 DOI: 10.2147/ijn.s214923] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/25/2019] [Indexed: 12/30/2022] Open
Abstract
Background Cancer treatments are being continually developed. Increasingly more effective and better-targeted treatments are available. As treatment has developed, the outcomes have improved. Purpose In this work, polyethylene glycol (PEG), layered double hydroxide (LDH) and 5-fluorouracil (5-FU) were used as a stabilizing agent, a carrier and an anticancer active agent, respectively. Characterization and methods Magnetite nanoparticles (Fe3O4) coated with polyethylene glycol (PEG) and co-coated with 5-fluorouracil/Mg/Al- or Zn/Al-layered double hydroxide were synthesized by co-precipitation technique. Structural, magnetic properties, particle shape, particle size and drug loading percentage of the magnetic nanoparticles were investigated by XRD, TGA, FTIR, DLS, FESEM, TEM, VSM, UV-vis spectroscopy and HPLC techniques. Results XRD, TGA and FTIR studies confirmed the formation of Fe3O4 phase and the presence of iron oxide nanoparticles, polyethylene glycol, LDH and the drug for all the synthesized samples. The size of the nanoparticles co-coated with Mg/Al-LDH is about 27 nm compared to 40 nm when they were co-coated with Zn/Al-LDH, with both showings near uniform spherical shape. The iron oxide nanoparticles retain their superparamagnetic property when they were coated with polyethylene glycol, polyethylene glycol co-coated with Mg/Al-LDH and polyethylene glycol co-coated with Zn/Al-LDH with magnetic saturation value of 56, 40 and 27 emu/g, respectively. The cytotoxicity study reveals that the anticancer nanodelivery system has better anticancer activity than the free drug, 5-FU against liver cancer HepG2 cells and at the same time, it was found to be less toxic to the normal fibroblast 3T3 cells. Conclusion These are unique core-shell nanoparticles synthesized with the presence of multiple functionalities are hoped can be used as a multifunctional nanocarrier with the capability of targeted delivery using an external magnetic field and can also be exploited as hypothermia for cancer cells in addition to the chemotherapy property.
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Affiliation(s)
- Mona Ebadi
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Bullo Saifullah
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.,Laboratory for Vaccine and Immunotherapeutic, Institute of Biosciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Kalaivani Buskaran
- Laboratory for Vaccine and Immunotherapeutic, Institute of Biosciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Sharida Fakurazi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
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Tang C, York AW, Mikitsh JL, Wright AC, Chacko AM, Elias DR, Xu Y, Lim HK, Prud'homme RK. Preparation of PEGylated Iodine-Loaded Nanoparticles via Polymer-Directed Self-Assembly. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201700592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Christina Tang
- Department of Chemical and Life Science Engineering; Virginia Commonwealth University; Richmond VA 23284 USA
- Department of Chemical and Biological Engineering; Princeton University; Princeton NJ 08544 USA
| | - Adam W. York
- Department of Chemical and Biological Engineering; Princeton University; Princeton NJ 08544 USA
| | - John L. Mikitsh
- Department of Radiology; Division of Nuclear Medicine and Clinical Molecular Imaging; University of Pennsylvania Perelman School of Medicine; Philadelphia PA 19104 USA
| | - Alexander C. Wright
- Department of Radiology; Division of Nuclear Medicine and Clinical Molecular Imaging; University of Pennsylvania Perelman School of Medicine; Philadelphia PA 19104 USA
| | - Ann-Marie Chacko
- Department of Radiology; Division of Nuclear Medicine and Clinical Molecular Imaging; University of Pennsylvania Perelman School of Medicine; Philadelphia PA 19104 USA
| | - Drew R. Elias
- Janssen Research & Development; LLC Spring House; PA 19477 USA
| | - Yaodong Xu
- Janssen Research & Development; LLC Spring House; PA 19477 USA
| | - Heng-Keang Lim
- Janssen Research & Development; LLC Spring House; PA 19477 USA
| | - Robert K. Prud'homme
- Department of Chemical and Biological Engineering; Princeton University; Princeton NJ 08544 USA
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Nunes A, Pansare VJ, Beziere N, Ntoukas AK, Reber J, Bruzek M, Anthony J, Prud’homme RK, Ntziachristos V. Quenched hexacene optoacoustic nanoparticles. J Mater Chem B 2018; 6:44-55. [DOI: 10.1039/c7tb02633a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Flash NanoPrecipitation allows for the creation of optoacoustic imaging agents with tunable size and strong signal for biomedical imaging and therapy.
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Affiliation(s)
- Antonio Nunes
- Institute for Biological and Medical Imaging
- Helmholtz Zentrum München and Technische Universität München
- D-85764 Neuherberg
- Germany
| | - Vikram J. Pansare
- Department of Chemical and Biological Engineering
- Princeton University
- Princeton
- USA
| | - Nicolas Beziere
- Institute for Biological and Medical Imaging
- Helmholtz Zentrum München and Technische Universität München
- D-85764 Neuherberg
- Germany
| | - Argiris Kolokithas Ntoukas
- Institute for Biological and Medical Imaging
- Helmholtz Zentrum München and Technische Universität München
- D-85764 Neuherberg
- Germany
| | - Josefine Reber
- Institute for Biological and Medical Imaging
- Helmholtz Zentrum München and Technische Universität München
- D-85764 Neuherberg
- Germany
| | - Matthew Bruzek
- Department of Chemistry
- University of Kentucky
- Lexington
- USA
| | - John Anthony
- Department of Chemistry
- University of Kentucky
- Lexington
- USA
| | - Robert K. Prud’homme
- Department of Chemical and Biological Engineering
- Princeton University
- Princeton
- USA
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging
- Helmholtz Zentrum München and Technische Universität München
- D-85764 Neuherberg
- Germany
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Liu Q, Zhao D, Zhu X, Chen H, Yang Y, Xu J, Zhang Q, Fan A, Li N, Guo C, Kong Y, Lu Y, Chen X. Coloaded Nanoparticles of Paclitaxel and Piperlongumine for Enhancing Synergistic Antitumor Activities and Reducing Toxicity. J Pharm Sci 2017; 106:3066-3075. [PMID: 28552690 DOI: 10.1016/j.xphs.2017.05.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 04/25/2017] [Accepted: 05/16/2017] [Indexed: 01/31/2023]
Abstract
The purpose of this study was to develop a nanocarrier system for codelivery of paclitaxel (PTX) and piperlongumine (PL) and investigate the therapeutic potential of improving efficacy and reducing toxicity. PTX and PL were formulated into poly lactic-co-glycolic acid and D-α-tocopheryl polyethylene glycol succinate via organic solvent evaporation method. The average diameter was 117.1 ± 1.9 nm, and the zeta potential was -43.25 ± 2.76 mV. PL facilitated the cellular uptake of PTX, and the increased cytotoxicity was similarly displayed. The formulation with the PTX/PL concentration ratio at 1:200 showed the best antitumor activity, the IC50 of PTX were 5.10 ± 0.08 nM in HepG2 cells, and 3.79 ± 1.01 nM in Michigan Cancer Foundation-7 cells. Correspondingly, the combination index was 0.79 and 0.76. Furthermore, intracellular uptake of PTX toward HepG2 cells in coencapsulated nanoparticles was significantly more than free solution. In addition, the antitumor effect of PTX/PL-PTNPs in the HepG2 xenograft tumor model suggested that the nanoparticles showed a higher antitumor efficacy with reduced toxicity to other tissues compared with free PTX. In summary, the results indicated that PTX/PL-PTNPs processed well characteristics and enhanced its therapeutic efficacy; thus, this delivery system could be clinically effective for treatment of cancers.
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Affiliation(s)
- Qi Liu
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Di Zhao
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Xiaojie Zhu
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Huili Chen
- Department of Molecular and Cellular Biology, College of Science, The University of Arizona, Tucson, Arizona 85719
| | - Yue Yang
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Jiaqiu Xu
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Qing Zhang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Ali Fan
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Ning Li
- Department of Pharmacology, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Chaorui Guo
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Ying Kong
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yang Lu
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China.
| | - Xijing Chen
- Clinical Pharmacokinetics Laboratory, Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China.
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Chaudhary J, Lakhawat S, Pathak AN. Elucidation on enhanced application of synthesised kojic acid immobilised magnetic and chitosan tri‐polyphosphate nanoparticles as antibacterial agents. IET Nanobiotechnol 2015; 9:375-80. [DOI: 10.1049/iet-nbt.2014.0077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Jignesh Chaudhary
- Amity Institute of BiotechnologyAmity University RajasthanNH‐11C, Kant KalwarJaipur303002RajasthanIndia
| | - Sudarshan Lakhawat
- Amity Institute of BiotechnologyAmity University RajasthanNH‐11C, Kant KalwarJaipur303002RajasthanIndia
| | - Amrendra Nath Pathak
- Amity Institute of BiotechnologyAmity University RajasthanNH‐11C, Kant KalwarJaipur303002RajasthanIndia
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Fan H, Jin Z. Freezing polystyrene-b-poly(2-vinylpyridine) micelle nanoparticles with different nanostructures and sizes. SOFT MATTER 2014; 10:2848-2855. [PMID: 24668189 DOI: 10.1039/c3sm53049c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein we report how to control the nanostructures and sizes of polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) nanoparticles via manipulating freezing in solvent-exchange. By characterizing and analyzing the distinct structural features of the obtained nanoparticles, we recognized that micelle self-assembly happens in the precipitation of PS-b-P2VP when water is added into the block copolymer (BCP) solution. Solvent properties significantly influence micelle types that are vesicles in acetone/H2O and spherical micelles in tetrahydrofuran/H2O, respectively, thus further inducing different frozen nanostructures of the obtained nanoparticles, onion-like in acetone/H2O and large compound micelles in tetrahydrofuran/H2O. By changing the concentration of the block copolymers and the Vsolvent/VH2O ratio to modify the freezing stage at which block copolymer micelles are frozen, we can further control the size of the nanoparticles. Moreover, small molecules (phosphotungstic acid, pyrene, 1-pyrenebutyric acid) can be trapped into the block copolymer nanoparticles via the freezing process. Their distribution in the nanoparticles relies not only on the solvent property, but also on their interactions with block copolymers. The hybrid nanoparticles with ordered distribution of small molecules can be further changed to partially-void nanoparticles. Our study demonstrated that manipulating the freezing of block copolymers in the solvent exchange process is a simple and controllable fabrication method to generate BCP nanoparticles with different architectures.
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Affiliation(s)
- Hailong Fan
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
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Hussein-Al-Ali SH, El Zowalaty ME, Hussein MZ, Ismail M, Dorniani D, Webster TJ. Novel kojic acid-polymer-based magnetic nanocomposites for medical applications. Int J Nanomedicine 2014; 9:351-62. [PMID: 24453486 PMCID: PMC3890966 DOI: 10.2147/ijn.s53847] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Iron oxide magnetic nanoparticles (MNPs) were synthesized by the coprecipitation of iron salts in sodium hydroxide followed by coating separately with chitosan (CS) and polyethylene glycol (PEG) to form CS-MNPs and PEG-MNPs nanoparticles, respectively. They were then loaded with kojic acid (KA), a pharmacologically bioactive natural compound, to form KA-CS-MNPs and KA-PEG-MNPs nanocomposites, respectively. The MNPs and their nanocomposites were characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, vibrating sample magnetometry, and scanning electron microscopy. The powder X-ray diffraction data suggest that all formulations consisted of highly crystalline, pure magnetite Fe3O4. The Fourier transform infrared spectroscopy and thermogravimetric analysis confirmed the presence of both polymers and KA in the nanocomposites. Magnetization curves showed that both nanocomposites (KA-CS-MNPs and KA-PEG-MNPs) were superparamagnetic with saturation magnetizations of 8.1 emu/g and 26.4 emu/g, respectively. The KA drug loading was estimated using ultraviolet–visible spectroscopy, which gave a loading of 12.2% and 8.3% for the KA-CS-MNPs and KA-PEG-MNPs nanocomposites, respectively. The release profile of the KA from the nanocomposites followed a pseudo second-order kinetic model. The agar diffusion test was performed to evaluate the antimicrobial activity for both KA-CS-MNPs and KA-PEG-MNPs nanocomposites against a number of microorganisms using two Gram-positive (methicillin-resistant Staphylococcus aureus and Bacillus subtilis) and one Gram-negative (Salmonella enterica) species, and showed some antibacterial activity, which could be enhanced in future studies by optimizing drug loading. This study provided evidence for the promise for the further investigation of the possible beneficial biological activities of KA and both KA-CS-MNPs and KA-PEG-MNPs nanocomposites in nanopharmaceutical applications.
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Affiliation(s)
| | - Mohamed Ezzat El Zowalaty
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Serdang, Selangor, Malaysia ; Faculty of Public Health and Tropical Medicine, Jazan University, Jazan, Saudi Arabia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Serdang, Selangor, Malaysia
| | - Maznah Ismail
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Serdang, Selangor, Malaysia ; Department of Nutrition and Dietetics, Faculty of Medicine and Health Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Dena Dorniani
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Serdang, Selangor, Malaysia
| | - Thomas J Webster
- Department of Chemical Engineering and Program in Bioengineering, Northeastern University, Boston, MA, USA ; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Development of a novel probe sonication assisted enhanced loading of 5-FU in SPION encapsulated pectin nanocarriers for magnetic targeted drug delivery system. Eur J Pharm Biopharm 2012; 82:58-65. [DOI: 10.1016/j.ejpb.2012.05.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Accepted: 05/15/2012] [Indexed: 01/20/2023]
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Dutta RK, Sahu S. Development of diclofenac sodium loaded magnetic nanocarriers of pectin interacted with chitosan for targeted and sustained drug delivery. Colloids Surf B Biointerfaces 2012; 97:19-26. [DOI: 10.1016/j.colsurfb.2012.04.030] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/18/2012] [Accepted: 04/20/2012] [Indexed: 01/27/2023]
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Dutta RK, Sahu S. Development of oxaliplatin encapsulated in magnetic nanocarriers of pectin as a potential targeted drug delivery for cancer therapy. RESULTS IN PHARMA SCIENCES 2012; 2:38-45. [PMID: 25755993 PMCID: PMC4210274 DOI: 10.1016/j.rinphs.2012.05.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Accepted: 05/15/2012] [Indexed: 11/20/2022]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) and oxaliplatin (OHP) were in-situ encapsulated in pectin cross-linked with Ca(2+) forming 100-200 nm sized magnetically functionalized pectin nanocarriers, referred here as MP-OHP nanocarriers. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies revealed formation of spherical nanostructures. The magnetic measurements by vibration sample magnetometer (VSM) revealed high saturation magnetization (M s=45.65 emu/g). The superparamagnetic property of MP-OHP was confirmed from the blocking temperature (T B) determined from field cooled and zero field cooled magnetization, measured by superconducting quantum unit interference device (SQUID) magnetometry. The stability of the aqueous dispersion of MP-OHP nanocarriers was confirmed from its high zeta potential (-30.5 mV). The drug encapsulation efficiency (55.2±4.8% w/w) and the drug loading content (0.10±0.04 wt%) in MP-OHP nanocarriers were determined from corresponding platinum contents in OHP and MP-OHP batches measured by inductively coupled plasma mass spectrometry (ICPMS). These nanocarriers exhibited a sustained release of OHP in phosphate buffer solution maintained at pH 5.5 and 7.4, where the drug release profile satisfied a combination of diffusion and swelling controlled mechanism. The cytotoxicity effect of MP-OHP nanocarriers was studied on MIA-PaCa-2 (pancreas) cancer cell line, where the GI50 values were more than 5 mg/mL and it exhibited 10 folds higher cytoxicity than the equivalent concentration of free drug.
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Affiliation(s)
- Raj Kumar Dutta
- Analytical Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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Zhang M, Ellis EA, Cisneros-Zevallos L, Akbulut M. Uptake and translocation of polymeric nanoparticulate drug delivery systems into ryegrass. RSC Adv 2012. [DOI: 10.1039/c2ra21469e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zhang M, Akbulut M. Adsorption, desorption, and removal of polymeric nanomedicine on and from cellulose surfaces: effect of size. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12550-9. [PMID: 21879763 DOI: 10.1021/la202287k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The increased production and commercial use of nanoparticulate drug delivery systems combined with a lack of regulation to govern their disposal may result in their introduction to soils and ultimately into groundwater systems. To better understand how such particles interact with environmentally significant interfaces, we study the adsorption, desorption, and removal behavior of poly(ethylene glycol)-based nanoparticulate drug delivery systems on and from cellulose, which is the most common organic compound on Earth. It is shown that such an adsorption process is only partially reversible, and most of the adsorbate particles do not desorb from the cellulose surface even upon rinsing with a large amount of water. The rate constant of adsorption decreases with increasing particle size. Furthermore, hydrodynamic forces acting parallel to the surfaces are found to be of great importance in the context of particle dynamics near the cellulose surface, and ultimately responsible for the removal of some fraction of particles via rolling or sliding. As the particle size increases, the removal rates of the particles increase for a given hydrodynamical condition.
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Affiliation(s)
- Ming Zhang
- Artie McFerrin Department of Chemical Engineering, Materials Science and Engineering Program, Texas A&M University, 230 Jack E. Brown Engineering Building, 3122 TAMU, College Station, Texas 77843-3122, USA
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Shiang YC, Hsu CL, Huang CC, Chang HT. Gold Nanoparticles Presenting Hybridized Self-Assembled Aptamers That Exhibit Enhanced Inhibition of Thrombin. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101718] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Shiang YC, Hsu CL, Huang CC, Chang HT. Gold nanoparticles presenting hybridized self-assembled aptamers that exhibit enhanced inhibition of thrombin. Angew Chem Int Ed Engl 2011; 50:7660-5. [PMID: 21717538 DOI: 10.1002/anie.201101718] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Yen-Chun Shiang
- Department of Chemistry, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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Bugaj AM. Targeted photodynamic therapy--a promising strategy of tumor treatment. Photochem Photobiol Sci 2011; 10:1097-109. [PMID: 21547329 DOI: 10.1039/c0pp00147c] [Citation(s) in RCA: 192] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Targeted therapy is a new promising therapeutic strategy, created to overcome growing problems of contemporary medicine, such as drug toxicity and drug resistance. An emerging modality of this approach is targeted photodynamic therapy (TPDT) with the main aim of improving delivery of photosensitizer to cancer tissue and at the same time enhancing specificity and efficiency of PDT. Depending on the mechanism of targeting, we can divide the strategies of TPDT into "passive", "active" and "activatable", where in the latter case the photosensitizer is activated only in the target tissue. In this review, contemporary strategies of TPDT are described, including new innovative concepts, such as targeting assisted by peptides and aptamers, multifunctional nanoplatforms with navigation by magnetic field or "photodynamic molecular beacons" activatable by enzymes and nucleic acid. The imperative of introducing a new paradigm of PDT, focused on the concepts of heterogeneity and dynamic state of tumor, is also called for.
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Kumar V, Adamson DH, Prud'homme RK. Fluorescent polymeric nanoparticles: aggregation and phase behavior of pyrene and amphotericin B molecules in nanoparticle cores. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2907-2914. [PMID: 21104798 DOI: 10.1002/smll.201001199] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The state of aggregation of compounds, especially drugs, in the cores of nanoparticles (NPs) formed by rapid precipitation is a significant unresolved issue. The state can control the dissolution kinetics from the NP, bioavailability, and chemical stability of the compound. A block-copolymer-directed rapid precipitation process is used to form ≈100 nm NPs comprising mixtures of hydrophobic species including fluorescent probe molecules. Fluorescence measurements are used to probe the state of aggregation and dynamics of rearrangement of pyrene (Py), Hostasol Yellow (HosY), and amphotericin B (AmpB) in NP cores. The Flory-Huggins theory of mixing is used to predict the miscibility or phase separation of the fluorophores from the host NP core material (polystyrene, cholesterol, or polycaprolactone). For Py, excimer fluorescence shows an initial microphase separation in the polystyrene core. Over time the Py redistributes more uniformly with a decrease in excimer and increase in monomer fluorescence. The Flory-Huggins theory predicts the miscibility. For HosY, the fluorescence quenching is not time-dependent, thus indicating stability of the microphase-separated fluorophores, which is consistent with the Flory-Huggins theory calculations. For the drug compound AmpB, the amphiphilic character of the molecule creates unusual "anti-Ostwald" ripening behavior in which the size distribution decreases and narrows over time, and the fluorescence demonstrates an increased ordering in the NP core over time--opposite to the behavior observed for Py.
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Affiliation(s)
- Varun Kumar
- Chemical Engineering Department, Princeton University, Princeton, NJ 08544, USA
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