1
|
Akbari H, Gholami M, Akbari H, Adibzadeh A, Taghavi L, Hayati B, Nazari S. Poly (amidoamine) generation 6 functionalized Fe 3O 4@SiO 2/GPTMS core-shell magnetic NPs as a new adsorbent for Arsenite adsorption: kinetic, isotherm and thermodynamic studies. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:253-265. [PMID: 32399237 PMCID: PMC7203406 DOI: 10.1007/s40201-020-00461-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 02/19/2020] [Indexed: 05/28/2023]
Abstract
In this survey a new route has been developed the preparation of poly (amidoamine) generation 6 (PAMAM-G6) dendrimer functionalized Fe3O4/SiO2 nanoparticle and was used for arsenite (As (III)) adsorption. SiO2 was first grafted onto the surface of Fe3O4 to formation a core-shell structure. Then the introduction of epoxy rings were done by hydrolysis of methylsilane groups of 3-Glycidoxypropyltrimethoxysilane (GPTMS) on OH groups of SiO2 and afterwards, PAMAM-G6 reacted with epoxy rings of GPTMS to obtain a multiamino magnetic adsorbent. The as-prepared nanocomposite was characterized by TEM, Zeta potential, FESEM, VSM, FTIR, Raman and XPS techniques. The effects of reaction time from 5 to 50 min, initial As (III) concentration in the range of 1-10 mgL-1, initial adsorbent concentration in the range of 10-50 mgL-1 and initial pH in the range 3-8 were studied. The resulting of kinetic and isotherm models displays high adsorption affinity (233 mg/g) for As (III) and the adsorbent can reach the adsorbent can reach the adsorption equilibrium at a neutral pH (7). The As (III) loaded nanocomposite could be separated readily from aqueous solution by magnetic and regenerated simply via NaOH. The study of the adsorption procedure showed that the pseudo-second order kinetics and Langmuir isotherm well-fitted with the experimental data of As (III) adsorption onto nanocomposite.
Collapse
Affiliation(s)
- Hamed Akbari
- Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mitra Gholami
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hesam Akbari
- Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Amir Adibzadeh
- Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Lobat Taghavi
- Department of Environmental Pollution, Faculty of Natural Resources and Environment, Science and research Branch, Islamic Azad University, Tehran, Iran
| | - Bagher Hayati
- Department of Environmental Health Engineering, Khalkhal University of Medical Sciences, Khalkhal, Iran
| | - Shahram Nazari
- Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| |
Collapse
|
2
|
Shaikh NS. Sustainable Amine Synthesis: Iron Catalyzed Reactions of Hydrosilanes with Imines, Amides, Nitroarenes and Nitriles. ChemistrySelect 2019. [DOI: 10.1002/slct.201900460] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nadim S. Shaikh
- Department of Chemistry Eurofins Advinus Ltd., 21 & 22, Phase II, Peenya Industrial State Bengaluru 560058 India
| |
Collapse
|
3
|
Kumar S, Morya V, Gadhavi J, Vishnoi A, Singh J, Datta B. Investigation of nanoparticle immobilized cellulase: nanoparticle identity, linker length and polyphenol hydrolysis. Heliyon 2019; 5:e01702. [PMID: 31193471 PMCID: PMC6529720 DOI: 10.1016/j.heliyon.2019.e01702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 04/05/2019] [Accepted: 05/08/2019] [Indexed: 01/08/2023] Open
Abstract
Cellulase containing nanobiocatalysts have been useful as an extraction tool based on their ability to disrupt plant cell walls. In this work, we investigate the effect of nanoparticle composition and chemical linkage towards immobilized cellulase activity. Cellulase nanoconstructs have been prepared, characterized and compared for their loading efficiencies with standard assays and enzyme kinetics and correlate well with the cognate loading efficiencies. Application of the cellulase-immobilized nanoparticles on onion skins results in release of a distinctive composition of polyphenols. The aglycosidic form of quercetin is the dominant product of onion skin hydrolysis affected by cellulase nanobiocatalysts. Chitosan-coated iron oxide nanoparticles with APTES-conjugated cellulase are found to be most effective for polyphenol release and for transformation of glycosidic to aglycosidic form of quercetin. These results shed light on the activity of immobilized cellulase beyond their role in cell wall disruption and are important for the practical application of cellulase nanobiocatalysts.
Collapse
Affiliation(s)
- Sanjay Kumar
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Vinod Morya
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Joshna Gadhavi
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Anjani Vishnoi
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Jaskaran Singh
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Bhaskar Datta
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| |
Collapse
|
4
|
Synthesis and evaluation of the antibacterial effect of silica-coated modified magnetic poly-(amidoamine) G5 nanoparticles on E. coli and S. aureus. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
5
|
Ganji S, Bukya P, Liu ZW, Rao KSR, Burri DR. A carboxylic acid functionalized SBA-15 supported Pd nanocatalyst: an efficient catalyst for hydrogenation of nitrobenzene to aniline in water. NEW J CHEM 2019. [DOI: 10.1039/c9nj01743g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic performance of a PdNPs/SBA-COOH has been investigated for the first time in the selective hydrogenation of nitrobenzene with hydrous hydrazine at RT in water medium.
Collapse
Affiliation(s)
- Saidulu Ganji
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad-500607
- India
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE)
| | - Padma Bukya
- University Post Graduate College
- Osmania University
- Secunderabad
- India
| | - Zhong-Wen Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE)
- School of Chemistry & Chemical Engineering
- Shaanxi Normal University
- Xi’an 710062
- China
| | | | - David Raju Burri
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad-500607
- India
| |
Collapse
|
6
|
Hao N, Neranon K, Ramström O, Yan M. Glyconanomaterials for biosensing applications. Biosens Bioelectron 2016; 76:113-30. [PMID: 26212205 PMCID: PMC4637221 DOI: 10.1016/j.bios.2015.07.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/11/2015] [Accepted: 07/14/2015] [Indexed: 02/08/2023]
Abstract
Nanomaterials constitute a class of structures that have unique physiochemical properties and are excellent scaffolds for presenting carbohydrates, important biomolecules that mediate a wide variety of important biological events. The fabrication of carbohydrate-presenting nanomaterials, glyconanomaterials, is of high interest and utility, combining the features of nanoscale objects with biomolecular recognition. The structures can also produce strong multivalent effects, where the nanomaterial scaffold greatly enhances the relatively weak affinities of single carbohydrate ligands to the corresponding receptors, and effectively amplifies the carbohydrate-mediated interactions. Glyconanomaterials are thus an appealing platform for biosensing applications. In this review, we discuss the chemistry for conjugation of carbohydrates to nanomaterials, summarize strategies, and tabulate examples of applying glyconanomaterials in in vitro and in vivo sensing applications of proteins, microbes, and cells. The limitations and future perspectives of these emerging glyconanomaterials sensing systems are furthermore discussed.
Collapse
Affiliation(s)
- Nanjing Hao
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA
| | - Kitjanit Neranon
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden.
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA; Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden.
| |
Collapse
|
7
|
Lin Y, Wu S, Shi W, Zhang B, Wang J, Kim YA, Endo M, Su DS. Efficient and highly selective boron-doped carbon materials-catalyzed reduction of nitroarenes. Chem Commun (Camb) 2015; 51:13086-9. [DOI: 10.1039/c5cc01963j] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Boron-doped carbon materials are demonstrated to be excellent catalysts in nitroarene reduction reactions.
Collapse
Affiliation(s)
- Yangming Lin
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
- Shenyang National Laboratory for Materials Science
| | - Shuchang Wu
- Shenyang National Laboratory for Materials Science
- Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- P. R. China
| | - Wen Shi
- Shenyang National Laboratory for Materials Science
- Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- P. R. China
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science
- Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- P. R. China
| | - Jia Wang
- Shenyang National Laboratory for Materials Science
- Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- P. R. China
| | - Yoong Ahm Kim
- School of Polymer Science and Engineering
- Chonnam National University
- Buk-gu Kwangju
- Republic of Korea
| | - Morinobu Endo
- Carbon Institute of Science and Technology
- Shinshu University
- Nagano
- Japan
| | - Dang Sheng Su
- Shenyang National Laboratory for Materials Science
- Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- P. R. China
| |
Collapse
|
8
|
Ganji S, Enumula SS, Marella RK, Rao KSR, Burri DR. RhNPs/SBA-NH2: a high-performance catalyst for aqueous phase reduction of nitroarenes to aminoarenes at room temperature. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00143e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A RhNPs/SBA-NH2 catalyst with <3 nm sized nanoparticles has been synthesized and used in the chemoselective hydrogenation of nitroarenes at room temperature in aqueous medium with N2H4·H2O with high TOF.
Collapse
Affiliation(s)
- Saidulu Ganji
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - Siva Sankar Enumula
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | - Ravi Kumar Marella
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| | | | - David Raju Burri
- Catalysis Laboratory
- Indian Institute of Chemical Technology
- Hyderabad 500607, India
| |
Collapse
|
9
|
Demin AM, Krasnov VP, Charushin VN. Covalent Surface Modification of Fe3O4 Magnetic Nanoparticles with Alkoxy Silanes and Amino Acids. MENDELEEV COMMUNICATIONS 2013. [DOI: 10.1016/j.mencom.2013.01.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Tang W, Su Y, Li Q, Gao S, Shang JK. Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization. RSC Adv 2013. [DOI: 10.1039/c3ra41543k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
11
|
Brinãs RP, Sundgren A, Sahoo P, Morey S, Rittenhouse-Olson K, Wilding GE, Deng W, Barchi JJ. Design and synthesis of multifunctional gold nanoparticles bearing tumor-associated glycopeptide antigens as potential cancer vaccines. Bioconjug Chem 2012; 23:1513-23. [PMID: 22812418 DOI: 10.1021/bc200606s] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of vaccines against specific types of cancers will offer new modalities for therapeutic intervention. Here, we describe the synthesis of a novel vaccine construction prepared from spherical gold nanoparticles of 3-5 nm core diameters. The particles were coated with both the tumor-associated glycopeptides antigens containing the cell-surface mucin MUC4 with Thomsen Friedenreich (TF) antigen attached at different sites and a 28-residue peptide from the complement derived protein C3d to act as a B-cell activating "molecular adjuvant". The synthesis entailed solid-phase glycopeptide synthesis, design of appropriate linkers, and attachment chemistry of the various molecules to the particles. Attachment to the gold surface was mediated by a novel thiol-containing 33 atom linker which was further modified to be included as a third "spacer" component in the synthesis of several three-component vaccine platforms. Groups of mice were vaccinated either with one of the nanoplatform constructs or with control particles without antigen coating. Evaluation of sera from the immunized animals in enzyme immunoassays (EIA) against each glycopeptide antigen showed a small but statistically significant immune response with production of both IgM and IgG isotypes. Vaccines with one carbohydrate antigen (B, C, and E) gave more robust responses than the one with two contiguous disaccharides (D), and vaccine E with a TF antigen attached to threonine at the 10th position of the peptide was selected for IgG over IgM suggesting isotype switching. The data suggested that this platform may be a viable delivery system for tumor-associated glycopeptide antigens.
Collapse
Affiliation(s)
- Raymond P Brinãs
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Sangeetha J, Philip J. The interaction, stability and response to an external stimulus of iron oxide nanoparticle–casein nanocomplexes. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.04.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
13
|
Demin AM, Uimin MA, Shchegoleva NN, Yermakov AE, Krasnov VP. Surface modification of Fe3O4 magnetic nanoparticles with (S)-naproxen. ACTA ACUST UNITED AC 2012. [DOI: 10.1134/s199507801202005x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
Bouffier L, Yiu HHP, Rosseinsky MJ. Chemical grafting of a DNA intercalator probe onto functional iron oxide nanoparticles: a physicochemical study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6185-6192. [PMID: 21488618 DOI: 10.1021/la104745x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Spherical magnetite nanoparticles (MNPs, ∼ 24 nm in diameter) were sequentially functionalized with trimethoxysilylpropyldiethylenetriamine (TMSPDT) and a synthetic DNA intercalator, namely, 9-chloro-4H-pyrido[4,3,2-kl]acridin-4-one (PyAcr), in order to promote DNA interaction. The designed synthetic pathway allowed control of the chemical grafting efficiency to access MNPs either partially or fully functionalized with the intercalator moiety. The newly prepared nanomaterials were characterized by a range of physicochemical techniques: FTIR, TEM, PXRD, and TGA. The data were consistent with a full surface coverage by immobilized silylpropyldiethylenetriamine (SPDT) molecules, which corresponds to ∼22,300 SPDT molecules per MNP and a subsequent (4740-2940) PyAcr after the chemical grafting step (i.e., ∼ 2.4 PyAcr/nm(2)). A greater amount of PyAcr (30,600) was immobilized by the alternative strategy of binding a fully prefunctionalized shell to the MNPs with up to 16.1 PyAcr/nm(2). We found that the extent of PyAcr functionalization strongly affects the resulting properties and, particularly, the colloidal stability as well as the surface charge estimated by ζ-potential measurement. The intercalator grafting generates a negative charge contribution which counterbalances the positive charge of the single SPDT shell. The DNA binding capability was measured by titration assay and increases from 15 to 21.5 μg of DNA per mg of MNPs after PyAcr grafting (14-20% yield) but then drops to only ∼2 μg for the fully functionalized MNPs. This highlights that even if the size of the MNPs is obviously a determining factor to promote surface DNA interaction, it is not the only limiting parameter, as the mode of binding and the interfacial charge density are essential to improve loading capability.
Collapse
Affiliation(s)
- Laurent Bouffier
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | | | | |
Collapse
|
15
|
Gutsulyak DV, van der Est A, Nikonov GI. Facile Catalytic Hydrosilylation of Pyridines. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006135] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
16
|
Gutsulyak DV, van der Est A, Nikonov GI. Facile Catalytic Hydrosilylation of Pyridines. Angew Chem Int Ed Engl 2011; 50:1384-7. [DOI: 10.1002/anie.201006135] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Indexed: 11/08/2022]
|
17
|
González B, Ruiz-Hernández E, Feito MJ, López de Laorden C, Arcos D, Ramírez-Santillán C, Matesanz C, Portolés MT, Vallet-Regí M. Covalently bonded dendrimer-maghemite nanosystems: nonviral vectors for in vitro gene magnetofection. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03526b] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Marszałł MP, Buciński A, Goryński K, Proszowska A, Kaliszan R. Magnetic beads method for determination of binding of drugs to melanin. J Chromatogr A 2011; 1218:229-36. [DOI: 10.1016/j.chroma.2010.11.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 11/04/2010] [Accepted: 11/09/2010] [Indexed: 10/18/2022]
|
19
|
Smolensky ED, Park HYE, Berquó TS, Pierre VC. Surface functionalization of magnetic iron oxide nanoparticles for MRI applications - effect of anchoring group and ligand exchange protocol. CONTRAST MEDIA & MOLECULAR IMAGING 2010; 6:189-99. [PMID: 21861279 DOI: 10.1002/cmmi.417] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 07/20/2010] [Accepted: 08/06/2010] [Indexed: 11/06/2022]
Abstract
Hydrophobic magnetite nanoparticles synthesized from thermal decomposition of iron salts must be rendered hydrophilic for their application as MRI contrast agents. This process requires refunctionalizing the surface of the nanoparticles with a hydrophilic organic coating such as polyethylene glycol. Two parameters were found to influence the magnetic behavior and relaxivity of the resulting hydrophilic iron oxide nanoparticles: the functionality of the anchoring group and the protocol followed for the functionalization. Nanoparticles coated with PEGs via a catecholate-type anchoring moiety maintain the saturation magnetization and relaxivity of the hydrophobic magnetite precursor. Other anchoring functionalities, such as phosphonate, carboxylate and dopamine decrease the magnetization and relaxivity of the contrast agent. The protocol for functionalizing the nanoparticles also influences the magnetic behavior of the material. Nanoparticles refunctionalized according to a direct biphasic protocol exhibit higher relaxivity than those refunctionalized according to a two-step procedure which first involves stripping the nanoparticles. This research presents the first systematic study of both the binding moiety and the functionalization protocol on the relaxivity and magnetization of water-soluble coated iron oxide nanoparticles used as MRI contrast agents.
Collapse
Affiliation(s)
- Eric D Smolensky
- Department of Chemistry, 207 Pleasant Street SE, University of Minnesota, Minneapolis, MN 55455, USA
| | | | | | | |
Collapse
|
20
|
Lombardi D, Dittrich PS. Droplet microfluidics with magnetic beads: a new tool to investigate drug–protein interactions. Anal Bioanal Chem 2010; 399:347-52. [DOI: 10.1007/s00216-010-4302-7] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/02/2010] [Accepted: 10/05/2010] [Indexed: 11/29/2022]
|
21
|
Moros M, Pelaz B, López-Larrubia P, García-Martin ML, Grazú V, de la Fuente JM. Engineering biofunctional magnetic nanoparticles for biotechnological applications. NANOSCALE 2010; 2:1746-55. [PMID: 20676420 DOI: 10.1039/c0nr00104j] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Synthesis and characterization of magnetic nanoparticles with excellent size control are showed here. Their functionalization using an amphiphilic polymer is also described. This strategy allows the stabilization of magnetic nanoparticles in aqueous solvents and in addition, the polymer shell serves as a platform to incorporate relevant biomolecules, such as poly(ethylene glycol) and a number of carbohydrates. Nanoparticles functionalized with carbohydrates show the ability to avoid unspecific interactions between proteins present in the working medium and the nanoparticles, so can be used as an alternative to poly(ethylene glycol) molecules. Results confirm these nanoparticles as excellent contrast agents for magnetic resonance imaging. Changes in the spin-spin transversal relaxation times of the surrounding water protons due to nanoparticle aggregation demonstrates the bioactivity of these nanoparticles functionalized with carbohydrates. To finish with, nanoparticle toxicity is evaluated by means of MTT assay. The obtained results clearly indicate that these nanoparticles are excellent candidates for their further application in nanomedicine or nanobiotechnology.
Collapse
Affiliation(s)
- Maria Moros
- Instituto de Nanociencia de Aragón, University of Zaragoza, Zaragoza, Spain
| | | | | | | | | | | |
Collapse
|
22
|
Marszałł MP, Buciński A, Kruszewski S, Ziomkowska B. A new approach to determine camptothecin and its analogues affinity to human serum albumin. J Pharm Sci 2010; 100:1142-6. [PMID: 20740669 DOI: 10.1002/jps.22318] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Revised: 06/28/2010] [Accepted: 07/06/2010] [Indexed: 11/07/2022]
Abstract
A novel and fast method for the determination of the binding kinetic data of ligand to protein has been developed. A new tool including human serum albumin-coated magnetic beads (HSA-MB) was used to determine the affinity of camptothecin (CPT) and its analogues to HSA. From the biological activity point of view, these compounds have potential anticancer activity. However, the numerous studies indicate that some of these analogues have a strong affinity to plasma proteins stopping their effective therapy. Thus, the problem of plasma protein binding behavior of CPT's analogues was the subject of this study.
Collapse
Affiliation(s)
- Michał Piotr Marszałł
- Department of Medicinal Chemistry, Faculty of Pharmacy, Collegium Medicum, Nicolaus Copernicus University, M. Skłodowskiej-Curie 9, 85-094 Bydgoszcz, Poland.
| | | | | | | |
Collapse
|
23
|
El-Boubbou K, Zhu DC, Vasileiou C, Borhan B, Prosperi D, Li W, Huang X. Magnetic glyco-nanoparticles: a tool to detect, differentiate, and unlock the glyco-codes of cancer via magnetic resonance imaging. J Am Chem Soc 2010; 132:4490-9. [PMID: 20201530 DOI: 10.1021/ja100455c] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Within cancer, there is a large wealth of diversity, complexity, and information that nature has engineered rendering it challenging to identify reliable detection methods. Therefore, the development of simple and effective techniques to delineate the fine characteristics of cancer cells can have great potential impacts on cancer diagnosis and treatment. Herein, we report a magnetic glyco-nanoparticle (MGNP) based nanosensor system bearing carbohydrates as the ligands, not only to detect and differentiate cancer cells but also to quantitatively profile their carbohydrate binding abilities by magnetic resonance imaging (MRI). Using an array of MGNPs, a range of cells including closely related isogenic tumor cells, cells with different metastatic potential and malignant vs normal cells can be readily distinguished based on their respective "MRI signatures". Furthermore, the information obtained from such studies helped guide the establishment of strongly binding MGNPs as antiadhesive agents against tumors. As the interactions between glyco-conjugates and endogenous lectins present on cancer cell surface are crucial for cancer development and metastasis, the ability to characterize and unlock the glyco-code of individual cell lines can facilitate both the understanding of the roles of carbohydrates as well as the expansion of diagnostic and therapeutic tools for cancer.
Collapse
|
24
|
Selective preparation of novel fluoroalkyl end-capped co-oligomeric nanocomposite-encapsulated magnetites and magnetite-adsorbing co-oligomeric nanoparticles. Polym J 2010. [DOI: 10.1038/pj.2010.27] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
25
|
Zhu Y, Stubbs LP, Ho F, Liu R, Ship CP, Maguire J, Hosmane N. Magnetic Nanocomposites: A New Perspective in Catalysis. ChemCatChem 2010. [DOI: 10.1002/cctc.200900314] [Citation(s) in RCA: 332] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
26
|
Junge K, Wendt B, Shaikh N, Beller M. Iron-catalyzed selective reduction of nitroarenes to anilines using organosilanes. Chem Commun (Camb) 2010; 46:1769-71. [DOI: 10.1039/b924228g] [Citation(s) in RCA: 209] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Zheng Q, Han C, Li H. Selective and efficient magnetic separation of Pb2+via gold nanoparticle-based visual binding enrichment. Chem Commun (Camb) 2010; 46:7337-9. [DOI: 10.1039/c0cc02915g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
A protein-coated magnetic beads as a tool for the rapid drug-protein binding study. J Pharm Biomed Anal 2009; 52:420-4. [PMID: 19596536 DOI: 10.1016/j.jpba.2009.06.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 06/09/2009] [Accepted: 06/11/2009] [Indexed: 11/21/2022]
Abstract
A simple and fast method for the determination of the association constant (K(a)) of ligand to human serum albumin (HSA) has been developed by using human serum albumin-coated magnetic beads (HSA-MB). To date, magnetic beads (MB) have been increasingly used as a bioseparation tool, especially for DNA, RNA, protein, enzyme and cell isolation or purification. In this study, HSA-MB were used as a new tool to determine the affinity of known ligands to HSA. The K(a) for l-tryptofan, fenoprofen, ketoprofen, tolbutamide and warfarin obtained from Schathard analysis are consistent with previously reported values. The different K(a) values for ketoprofen after the acetylation of HSA-MB by preincubation with acetylosalicylic acid indicate that these beads can be successfully adapted in combined experiment. In addition, the HSA-MB experiment with phenytoin and valproic acid proved to be a simple method to examine drug displacement effect.
Collapse
|
29
|
Drbohlavova J, Hrdy R, Adam V, Kizek R, Schneeweiss O, Hubalek J. Preparation and properties of various magnetic nanoparticles. SENSORS 2009; 9:2352-62. [PMID: 22574017 PMCID: PMC3348843 DOI: 10.3390/s90402352] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 03/23/2009] [Accepted: 03/30/2009] [Indexed: 12/04/2022]
Abstract
The fabrications of iron oxides nanoparticles using co-precipitation and gadolinium nanoparticles using water in oil microemulsion method are reported in this paper. Results of detailed phase analysis by XRD and Mössbauer spectroscopy are discussed. XRD analysis revealed that the crystallite size (mean coherence length) of iron oxides (mainly γ-Fe2O3) in the Fe2O3 sample was 30 nm, while in Fe2O3/SiO2 where the ε-Fe2O3 phase dominated it was only 14 nm. Gd/SiO2 nanoparticles were found to be completely amorphous, according to XRD. The samples showed various shapes of hysteresis loops and different coercivities. Differences in the saturation magnetization (MS) correspond to the chemical and phase composition of the sample materials. However, we observed that MS was not reached in the case of Fe2O3/SiO2, while for Gd/SiO2 sample the MS value was extremely low. Therefore we conclude that only unmodified Fe2O3 nanoparticles are suitable for intended biosensing application in vitro (e.g. detection of viral nucleic acids) and the phase purification of this sample for this purpose is not necessary.
Collapse
Affiliation(s)
- Jana Drbohlavova
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Údolní 53, 602 00 Brno, Czech Republic; E-Mails: (R.H.); (J.H.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420 541 146 163; Fax: +420 541 146 298
| | - Radim Hrdy
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Údolní 53, 602 00 Brno, Czech Republic; E-Mails: (R.H.); (J.H.)
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University of Agriculture and Forestry, Zemědělská 1, 613 00 Brno, Czech Republic; E-Mails: (V.A.); (R.K.)
| | - Rene Kizek
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University of Agriculture and Forestry, Zemědělská 1, 613 00 Brno, Czech Republic; E-Mails: (V.A.); (R.K.)
| | - Oldrich Schneeweiss
- Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Zizkova 22, 616 62 Brno, Czech Republic; E-Mail: (O.S.)
| | - Jaromir Hubalek
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Údolní 53, 602 00 Brno, Czech Republic; E-Mails: (R.H.); (J.H.)
| |
Collapse
|
30
|
Affiliation(s)
- Pedro Tartaj
- Instituto de Ciencia de Materiales de Madrid (CSIC), Campus Universitario de Cantoblanco, 28049 Madrid, Spain
| |
Collapse
|