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Kłos JS, Paturej J. Binding mechanisms in dendrimer-surfactant complexes. Phys Rev E 2022; 105:034501. [PMID: 35428143 DOI: 10.1103/physreve.105.034501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Molecular dynamics simulations were employed to investigate the impact of interactions between dendritic polyeclectrolytes and amphiphilic surfactants on the supramolecular complex formation. We recognize two crucial parameters that govern association of surfactants within dendrimers: surfactant hydrophobicity, ε^{*}, and dendrimer generation, G. We find that depending on the values of ε^{*} and G encapsulation of surfactants by dendrimers is either noncooperative or cooperative. The noncooperative binding is characterized by absorption of surfactants as unimers, whereas in cooperative binding absorption of unimers is followed by aggregate formation through hydrophobic attractions between the surfactant tails. Our results provide guidelines for controlled encapsulation of guest molecules in dendrimer-based guest-host complexes.
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Affiliation(s)
- J S Kłos
- Faculty of Physics, A. Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
| | - J Paturej
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
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2
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Torres-Pérez SA, Vallejo-Castillo L, Vázquez-Leyva S, Zepeda-Vallejo LG, Herbert-Pucheta JE, Severac C, Dague E, Pérez-Tapia SM, Ramón-Gallegos E. Structural and physicochemical characteristics of one-step PAMAM dendrimeric nanoparticles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Chen H, Tan J. Aggregation Behavior and Intermolecular Interaction of Cationic Trisiloxane Surfactants: Effects of Unsaturation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14582-14588. [PMID: 33211964 DOI: 10.1021/acs.langmuir.0c02332] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Imidazolium/pyridinium-based trisiloxane surfactants containing a phenyl or vinyl group in the hydrophobic siloxane chain, bis(vinyldimethylsiloxy)methylsilylpropyl-pyridinium chloride (Vi-Si3pyrCl), bis(vinyldimethylsiloxy)methylsilylpropyl-imidazolium chloride (Vi-Si3minCl), and bis(phenyldimethylsiloxy)methylsilylpropylimidazolium chloride (Ph-Si3minCl), were synthesized and confirmed by nuclear magnetic resonance (NMR) (1H, 13C, and 29Si NMR), mass spectrometry, and Fourier transform infrared spectrometry. The effect of the phenyl/vinyl group on their micellization behavior was studied by surface tension, electric conductivity, dynamic light scattering, 2D nuclear Overhauser effect spectroscopy (NOESY) NMR, and transmission electron microscopy. Owing to the hydrophobicity of the siloxane groups and cationic head groups, the critical micelle concentration (cmc) values follow the order Ph-Si3minCl < Vi-Si3pyrCl < Vi-Si3minCl < Si3pyrCl. Ph-Si3minCl has a larger γcmc value, resulting from the introduction of the phenyldimethylsiloxy unit (π-π stacking interaction). The β values of Vi-Si3minCl and Ph-Si3minCl increase with the increase in temperature, which is attributed to the intermolecular interaction which hinders the association of Cl- with the imidazolium ring and confirmed by 2D NOESY NMR. In aqueous solutions, the investigated cationic trisiloxane surfactants can self-assemble into spherical aggregates.
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Affiliation(s)
- Hao Chen
- School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China
| | - Jinglin Tan
- School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China
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4
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Yang W, Veroniaina H, Qi X, Chen P, Li F, Ke PC. Soft and Condensed Nanoparticles and Nanoformulations for Cancer Drug Delivery and Repurpose. ADVANCED THERAPEUTICS 2020; 3:1900102. [PMID: 34291146 PMCID: PMC8291088 DOI: 10.1002/adtp.201900102] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Indexed: 12/24/2022]
Abstract
Drug repurpose or reposition is recently recognized as a high-performance strategy for developing therapeutic agents for cancer treatment. This approach can significantly reduce the risk of failure, shorten R&D time, and minimize cost and regulatory obstacles. On the other hand, nanotechnology-based delivery systems are extensively investigated in cancer therapy due to their remarkable ability to overcome drug delivery challenges, enhance tumor specific targeting, and reduce toxic side effects. With increasing knowledge accumulated over the past decades, nanoparticle formulation and delivery have opened up a new avenue for repurposing drugs and demonstrated promising results in advanced cancer therapy. In this review, recent developments in nano-delivery and formulation systems based on soft (i.e., DNA nanocages, nanogels, and dendrimers) and condensed (i.e., noble metal nanoparticles and metal-organic frameworks) nanomaterials, as well as their theranostic applications in drug repurpose against cancer are summarized.
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Affiliation(s)
- Wen Yang
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA
| | | | - Xiaole Qi
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing 210009, China; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade Parkville, VIC 3052, Australia
| | - Pengyu Chen
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA
| | - Feng Li
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn AL 36849, USA
| | - Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade Parkville, VIC 3052, Australia
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5
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Ning C, Ma H, Pedersen CM, Chang H, Wang Y, Qiao Y. Interaction between environmental contaminant PFOA and PAMAM in water: 19F and 1H NMR studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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6
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Koley S, Panda MR, Bharadwaj K, Ghosh S. Spectroscopic and Calorimetric Studies of Molecular Recognitions in a Dendrimer-Surfactant Complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:817-825. [PMID: 28505448 DOI: 10.1021/acs.langmuir.7b01081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Molecular recognitions, causing supramolecular complex formation between a hyperbranched polymer molecule (polyamidoamine (PAMAM) dendrimer generation 3) with oppositely charged surfactant sodium dodecyl sulfate (SDS) in aqueous solution, were studied by using various spectroscopic techniques and calorimetric titration of heat change measurements. Spectroscopic measurements were performed using dynamic Stokes shift (DSS), rotational anisotropy decay, and translational diffusion of a fluorescent probe molecule coumarin 153 (C153) noncovalently attached to the dendrimer-surfactant complex. All these studies unanimously confirm that the critical aggregation concentration (CAC) of SDS falls to ∼0.8 mM (from its critical micelle concentration (CMC) ∼ 8 mM) in the presence of ∼0.2 mM dendrimer. Further studies of isothermal titration calorimetry (ITC) measurement show that the CAC of SDS in the presence of dendrimer remains invariant to the dendrimer concentration. Complexation reaction between SDS and dendrimer is highly exothermic in nature. A maximum heat release (ΔH∼ -6.6 kJ/mol of SDS binding) was observed at a SDS-to-dendrimer mole ratio of ∼3-5; where up to 3 to 5 SDS molecules were encapsulated by one dendrimer molecule to form dendrimer-SDS encapsulation complex. When negatively charged SDS was replaced with a positively charged surfactant dodecyl-trimethylammonium-bromide (DTAB), we found that the DTAB hardly interacted with positively charged dendrimer due to the charge-charge repulsions.
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Affiliation(s)
- Somnath Koley
- School of Chemical Sciences, National Institute of Science Education and Research, HBNI , Khurda-752050, Odisha, India
| | - Manas Ranjan Panda
- School of Chemical Sciences, National Institute of Science Education and Research, HBNI , Khurda-752050, Odisha, India
| | - Kiran Bharadwaj
- School of Chemical Sciences, National Institute of Science Education and Research, HBNI , Khurda-752050, Odisha, India
| | - Subhadip Ghosh
- School of Chemical Sciences, National Institute of Science Education and Research, HBNI , Khurda-752050, Odisha, India
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7
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Liu CY, Chen HL, Do C, Hong K. Spatial Distributions of Guest Molecule and Hydration Level in Dendrimer-Based Guest-Host Complex. ACS Macro Lett 2016; 5:1004-1008. [PMID: 35614650 DOI: 10.1021/acsmacrolett.6b00526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Using the electrostatic complex of G4 poly(amidoamine) (PAMAM) dendrimer with an amphiphilic surfactant as a model system, contrast variation small angle neutron scattering (SANS) is implemented to resolve the key structural characteristics of dendrimer-based guest-host system. Quantifications of the radial distributions of the scattering length density and the hydration level within the complex molecule reveal that the surfactant is embedded in the peripheral region of dendrimer and the steric crowding in this region increases the backfolding of the dendritic segments, thereby reducing the hydration level throughout the complex molecule. The insights into the spatial location of the guest molecules as well as the perturbations of dendrimer conformation and hydration level deduced here are crucial for the delicate design of dendrimer-based guest-host system for biomedical applications.
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Affiliation(s)
- Chih-Ying Liu
- Department
of Chemical Engineering and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hsin-Lung Chen
- Department
of Chemical Engineering and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
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8
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Abstract
In this article, we reviewed the interactions between dendrimers and surfactants with particular focus on the interaction mechanisms and physicochemical properties of the yielding dendrimer-surfactant aggregates. In order to provide insight into the behavior of dendrimers in biological systems, the interactions of dendrimers with bio-surfactants such as phospholipids in bulk solutions, in solid-supported bilayers and at the interface of phases or solid-states were discussed. Applications of the dendrimer-surfactant aggregates as templates to guide the synthesis of nanoparticles and in drug or gene delivery were also mentioned.
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Affiliation(s)
- Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, People's Republic of China.
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Szulc A, Zablocka M, Coppel Y, Bijani C, Dabkowski W, Bryszewska M, Klajnert-Maculewicz B, Majoral JP. A viologen phosphorus dendritic molecule as a carrier of ATP and Mant-ATP: spectrofluorimetric and NMR studies. NEW J CHEM 2014. [DOI: 10.1039/c4nj01176g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A viologen phosphorus dendritic molecule is able to create non-covalent interactions with model molecules of drugs belonging to the group of nucleoside analogues.
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Affiliation(s)
- Aleksandra Szulc
- Department of General Biophysics
- University of Lodz
- 90-236 Lodz, Poland
| | - Maria Zablocka
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Lodz, Poland
| | - Yannick Coppel
- Laboratoire de Chimie de Coordination du CNRS (LCC)
- F-31077 Toulouse cedex 4, France
| | - Christian Bijani
- Laboratoire de Chimie de Coordination du CNRS (LCC)
- F-31077 Toulouse cedex 4, France
| | - Wojciech Dabkowski
- Centre of Molecular and Macromolecular Studies
- Polish Academy of Sciences
- 90-363 Lodz, Poland
| | - Maria Bryszewska
- Department of General Biophysics
- University of Lodz
- 90-236 Lodz, Poland
| | | | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination du CNRS (LCC)
- F-31077 Toulouse cedex 4, France
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Hansen JS, Ficker M, Petersen JF, Nielsen BE, Gohar S, Christensen JB. Study of the complexation of oxacillin in 1-(4-carbomethoxypyrrolidone)-terminated PAMAM dendrimers. J Phys Chem B 2013; 117:14865-74. [PMID: 24219418 DOI: 10.1021/jp408613z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The complexation of oxacillin to three generations of 1-(4-carbomethoxypyrrolidone)-terminated PAMAM dendrimers was studied with NMR in CD3OD and CDCl3. The stochiometries, which were determined from Job plots, were found to be both solvent- and generation-dependent. The dissociation constants (K(d)) and Gibbs energies for complexation of oxacillin into the 1-(4-carbomethoxypyrrolidone)-terminated PAMAM dendrimer hosts were determined by (1)H NMR titrations and showed weaker binding of oxacillin upon increasing the size (generation) of the dendrimer.
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Affiliation(s)
- Jon S Hansen
- Department of Chemistry, University of Copenhagen , Thorvaldsensvej 40, DK-1871 Frederiksberg, Copenhagen, Denmark
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11
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Wang F, Shao N, Cheng Y. Paramagnetic NMR investigation of dendrimer-based host-guest interactions. PLoS One 2013; 8:e64722. [PMID: 23762249 PMCID: PMC3677888 DOI: 10.1371/journal.pone.0064722] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 04/18/2013] [Indexed: 02/03/2023] Open
Abstract
In this study, the host-guest behavior of poly(amidoamine) (PAMAM) dendrimers bearing amine, hydroxyl, or carboxylate surface functionalities were investigated by paramagnetic NMR studies. 2,2,6,6-Tetramethylpiperidinyloxy (TEMPO) derivatives were used as paramagnetic guest molecules. The results showed that TEMPO-COOH significantly broaden the 1H NMR peaks of amine- and hydroxyl-terminated PAMAM dendrimers. In comparison, no paramagnetic relaxation enhancement (PRE) was observed between TEMPO-NH2, TEMPO-OH and the three types of PAMAM dendrimers. The PRE phenomenon observed is correlated with the encapsulation of TEMPO-COOH within dendrimer pockets. Protonation of the tertiary amine groups within PAMAM dendrimers plays an important role during this process. Interestingly, the absence of TEMPO-COOH encapsulation within carboxylate-terminated PAMAM dendrimer is observed due to the repulsion of TEMPO-COO- anion and anionic dendrimer surface. The combination of paramagnetic probes and 1H NMR linewidth analysis can be used as a powerful tool in the analysis of dendrimer-based host-guest systems.
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Affiliation(s)
- Fei Wang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, People's Republic of China
| | - Naimin Shao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, People's Republic of China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, People's Republic of China
- Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, Shanghai, People's Republic of China
- * E-mail:
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12
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Schönhoff M. NMR studies of sorption and adsorption phenomena in colloidal systems. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.03.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Tian WD, Ma YQ. Theoretical and computational studies of dendrimers as delivery vectors. Chem Soc Rev 2013; 42:705-27. [PMID: 23114420 DOI: 10.1039/c2cs35306g] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
It is a great challenge for nanomedicine to develop novel dendrimers with maximum therapeutic potential and minimum side-effects for drug and gene delivery. As delivery vectors, dendrimers must overcome lots of barriers before delivering the bio-agents to the target in the cell. Extensive experimental investigations have been carried out to elucidate the physical and chemical properties of dendrimers and explore their behaviors when interacting with biomolecules, such as gene materials, proteins, and lipid membranes. As a supplement of the experimental techniques, it has been proved that computer simulations could facilitate the progress in understanding the delivery process of bioactive molecules. The structures of dendrimers in dilute solutions have been intensively investigated by monomer-resolved simulations, coarse-grained simulations, and atom-resolved simulations. Atomistic simulations have manifested that the hydrophobic interactions, hydrogen-bond interactions, and electrostatic attraction play critical roles in the formation of dendrimer-drug complexes. Multiscale simulations and statistical field theories have uncovered some physical mechanisms involved in the dendrimer-based gene delivery systems. This review will focus on the current status and perspective of theoretical and computational contributions in this field in recent years. (275 references).
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Affiliation(s)
- Wen-de Tian
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, China
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14
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Arteta MY, Eltes F, Campbell RA, Nylander T. Interactions of PAMAM dendrimers with SDS at the solid-liquid interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:5817-5831. [PMID: 23556998 DOI: 10.1021/la400774p] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work addresses structural and nonequilibrium effects of the interactions between well-defined cationic poly(amidoamine) PAMAM dendrimers of generations 4 and 8 and the anionic surfactant sodium dodecyl sulfate (SDS) at the hydrophilic silica-water interface. Neutron reflectometry and quartz crystal microbalance with dissipation monitoring were used to reveal the adsorption from premixed dendrimer/surfactant solutions as well as sequential addition of the surfactant to preadsorbed layers of dendrimers. PAMAM dendrimers of both generations adsorb to hydrophilic silica as a compact monolayer, and the adsorption is irreversible upon rinsing with salt solution. SDS adsorbs on the dendrimer layer and at low bulk concentrations causes the expansion of the dendrimer layers on the surface. When the bulk concentration of SDS is increased, the surfactant layer consists of aggregates or bilayer-like structures. The adsorption of surfactant is reversible upon rinsing, but slight changes of the structure of the preadsorbed PAMAM monolayer were observed. The adsorption from premixed solutions close to charge neutrality results in thick multilayers, but the surface excess is lower when the bulk complexes have a net negative charge. A critical examination of the pathway of adsorption for the interactions of SDS with preadsorbed PAMAM monolayers and premixed PAMAM/SDS solutions with hydrophilic silica revealed that nonequilibrium effects are important only in the latter case, and the application of a thermodynamic model to such experimental data would be inappropriate.
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16
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Wang H, Shao N, Qiao S, Cheng Y. Host–Guest Chemistry of Dendrimer–Cyclodextrin Conjugates: Selective Encapsulations of Guests within Dendrimer or Cyclodextrin Cavities Revealed by NOE NMR Techniques. J Phys Chem B 2012; 116:11217-24. [DOI: 10.1021/jp3062916] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hui Wang
- Shanghai Key Laboratory
of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
| | - Naimin Shao
- Shanghai Key Laboratory
of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
| | - Shengnan Qiao
- Shanghai Key Laboratory
of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
| | - Yiyun Cheng
- Shanghai Key Laboratory
of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
- Shanghai Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P. R. China
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17
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Shao N, Gong X, Chen Q, Cheng Y. Fast Screening of Dendrimer-Binding Compounds by Diffusion NMR Techniques. J Phys Chem B 2012; 116:5398-405. [DOI: 10.1021/jp302731u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Naimin Shao
- Shanghai Key Laboratory of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
| | - Xiaoliang Gong
- Shanghai Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P. R. China
| | - Qun Chen
- Shanghai Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P. R. China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China
- Shanghai Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P. R. China
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18
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Coppel Y, Spataro G, Collière V, Chaudret B, Mingotaud C, Maisonnat A, Kahn ML. Self-Assembly of ZnO Nanoparticles - An NMR Spectroscopic Study. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Ghai R, Falconer RJ, Collins BM. Applications of isothermal titration calorimetry in pure and applied research--survey of the literature from 2010. J Mol Recognit 2012; 25:32-52. [PMID: 22213449 DOI: 10.1002/jmr.1167] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Isothermal titration calorimetry (ITC) is a biophysical technique for measuring the formation and dissociation of molecular complexes and has become an invaluable tool in many branches of science from cell biology to food chemistry. By measuring the heat absorbed or released during bond formation, ITC provides accurate, rapid, and label-free measurement of the thermodynamics of molecular interactions. In this review, we survey the recent literature reporting the use of ITC and have highlighted a number of interesting studies that provide a flavour of the diverse systems to which ITC can be applied. These include measurements of protein-protein and protein-membrane interactions required for macromolecular assembly, analysis of enzyme kinetics, experimental validation of molecular dynamics simulations, and even in manufacturing applications such as food science. Some highlights include studies of the biological complex formed by Staphylococcus aureus enterotoxin C3 and the murine T-cell receptor, the mechanism of membrane association of the Parkinson's disease-associated protein α-synuclein, and the role of non-specific tannin-protein interactions in the quality of different beverages. Recent developments in automation are overcoming limitations on throughput imposed by previous manual procedures and promise to greatly extend usefulness of ITC in the future. We also attempt to impart some practical advice for getting the most out of ITC data for those researchers less familiar with the method.
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Affiliation(s)
- Rajesh Ghai
- Institute for Molecular Bioscience (IMB), University of Queensland, St. Lucia, Queensland, 4072, Australia
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20
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Cattoz B, de Vos WM, Cosgrove T, Crossman M, Prescott SW. Manipulating interfacial polymer structures through mixed surfactant adsorption and complexation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6282-6290. [PMID: 22435458 DOI: 10.1021/la300282m] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effects of a nonionic alcohol ethoxylate surfactant, C(13)E(7), on the interactions between PVP and SDS both in the bulk and at the silica nanoparticle interface are studied by photon correlation spectroscopy, solvent relaxation NMR, SANS, and optical reflectometry. Our results confirmed that, in the absence of SDS, C(13)E(7) and PVP are noninteracting, while SDS interacts strongly both with PVP and C(13)E(7) . Studying interfacial interactions showed that the interfacial interactions of PVP with silica can be manipulated by varying the amounts of SDS and C(13)E(7) present. Upon SDS addition, the adsorbed layer thickness of PVP on silica increases due to Coulombic repulsion between micelles in the polymer layer. When C(13)E(7) is progressively added to the system, it forms mixed micelles with the complexed SDS, reducing the total charge per micelle and thus reducing the repulsion between micelle and the silica surface that would otherwise cause the PVP to desorb. This causes the amount of adsorbed polymer to increase with C(13)E(7) addition for the systems containing SDS, demonstrating that addition of C(13)E(7) hinders the SDS-mediated desorption of an adsorbed PVP layer.
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Affiliation(s)
- Beatrice Cattoz
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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Affiliation(s)
- Jingjing Hu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Tongwen Xu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, People’s Republic of China
- Shanghai
Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P.R.China
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22
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Fang M, Zhang J, Wu Q, Xu T, Cheng Y. Host–Guest Chemistry of Dendrimer–Drug Complexes: 7. Formation of Stable Inclusions between Acetylated Dendrimers and Drugs Bearing Multiple Charges. J Phys Chem B 2012; 116:3075-82. [DOI: 10.1021/jp211384p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Min Fang
- CAS Key Laboratory
of Soft Matter
Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei,
Anhui, 230026, People’s Republic of China
- Department of Chemistry, Anhui University, Hefei, Anhui, 230029, People’s
Republic of China
| | - Jiahai Zhang
- Hefei
National Laboratory for
Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei,
Anhui, 230027, People’s Republic of China
| | - Qinglin Wu
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s
Republic of China
| | - Tongwen Xu
- CAS Key Laboratory
of Soft Matter
Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei,
Anhui, 230026, People’s Republic of China
| | - Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s
Republic of China
- Shanghai
Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, 200062, People’s Republic of China
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23
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Shao N, Su Y, Hu J, Zhang J, Zhang H, Cheng Y. Comparison of generation 3 polyamidoamine dendrimer and generation 4 polypropylenimine dendrimer on drug loading, complex structure, release behavior, and cytotoxicity. Int J Nanomedicine 2011; 6:3361-72. [PMID: 22267921 PMCID: PMC3260030 DOI: 10.2147/ijn.s27028] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Polyamidoamine (PAMAM) and polypropylenimine (PPI) dendrimers are the commercially available and most widely used dendrimers in pharmaceutical sciences and biomedical engineering. In the present study, the loading and release behaviors of generation 3 PAMAM and generation 4 PPI dendrimers with the same amount of surface amine groups (32 per dendrimer) were compared using phenylbutazone as a model drug. METHODS The dendrimer-phenylbutazone complexes were characterized by (1)H nuclear magnetic resonance and nuclear Overhauser effect techniques, and the cytotoxicity of each dendrimer was evaluated. RESULTS Aqueous solubility results suggest that the generation 3 PAMAM dendrimer has a much higher loading ability towards phenylbutazone in comparison with the generation 4 PPI dendrimer at high phenylbutazone-dendrimer feeding ratios. Drug release was much slower from the generation 3 PAMAM matrix than from the generation 4 PPI dendrimer. In addition, the generation 3 PAMAM dendrimer is at least 50-fold less toxic than generation 4 PPI dendrimer on MCF-7 and A549 cell lines. CONCLUSION Although the nuclear Overhauser effect nuclear magnetic resonance results reveal that the generation 4 PPI dendrimer with a more hydrophobic interior encapsulates more phenylbutazone, the PPI dendrimer-phenylbutazone inclusion is not stable in aqueous solution, which poses a great challenge during drug development.
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Affiliation(s)
- Naimin Shao
- School of Life Sciences, East China Normal University, Shanghai, China
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24
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Hu J, Su Y, Zhang H, Xu T, Cheng Y. Design of interior-functionalized fully acetylated dendrimers for anticancer drug delivery. Biomaterials 2011; 32:9950-9. [DOI: 10.1016/j.biomaterials.2011.09.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Accepted: 09/07/2011] [Indexed: 01/13/2023]
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25
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Feng X, Cheng Y, Wu Q, Zhang J, Xu T. Stimuli Response of Cystamine-Core Dendrimer Revealed by Diffusion and NOE NMR Studies. J Phys Chem B 2011; 115:3777-83. [DOI: 10.1021/jp2003613] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | - Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China
| | - Qinglin Wu
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China
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26
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Yang K, Weng L, Cheng Y, Zhang H, Zhang J, Wu Q, Xu T. Host−Guest Chemistry of Dendrimer−Drug Complexes. 6. Fully Acetylated Dendrimers as Biocompatible Drug Vehicles Using Dexamethasone 21- Phosphate as a Model Drug. J Phys Chem B 2011; 115:2185-95. [DOI: 10.1021/jp111044k] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kun Yang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Liang Weng
- School of Life Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Hongfeng Zhang
- School of Life Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Jiahai Zhang
- Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, People’s Republic of China
| | - Qinglin Wu
- School of Life Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Tongwen Xu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
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27
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Cheng Y, Zhao L, Li Y, Xu T. Design of biocompatible dendrimers for cancer diagnosis and therapy: current status and future perspectives. Chem Soc Rev 2011; 40:2673-703. [PMID: 21286593 DOI: 10.1039/c0cs00097c] [Citation(s) in RCA: 358] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the past decade, nanomedicine with its promise of improved therapy and diagnostics has revolutionized conventional health care and medical technology. Dendrimers and dendrimer-based therapeutics are outstanding candidates in this exciting field as more and more biological systems have benefited from these starburst molecules. Anticancer agents can be either encapsulated in or conjugated to dendrimer and be delivered to the tumour via enhanced permeability and retention (EPR) effect of the nanoparticle and/or with the help of a targeting moiety such as antibody, peptides, vitamins, and hormones. Imaging agents including MRI contrast agents, radionuclide probes, computed tomography contrast agents, and fluorescent dyes are combined with the multifunctional nanomedicine for targeted therapy with simultaneous cancer diagnosis. However, an important question reported with dendrimer-based therapeutics as well as other nanomedicines to date is the long-term viability and biocompatibility of the nanotherapeutics. This critical review focuses on the design of biocompatible dendrimers for cancer diagnosis and therapy. The biocompatibility aspects of dendrimers such as nanotoxicity, long-term circulation, and degradation are discussed. The construction of novel dendrimers with biocompatible components, and the surface modification of commercially available dendrimers by PEGylation, acetylation, glycosylation, and amino acid functionalization have been proposed as available strategies to solve the safety problem of dendrimer-based nanotherapeutics. Also, exciting opportunities and challenges on the development of dendrimer-based nanoplatforms for targeted cancer diagnosis and therapy are reviewed (404 references).
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Affiliation(s)
- Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People's Republic of China.
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28
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Zhao L, Wu Q, Cheng Y, Zhang J, Wu J, Xu T. High-Throughput Screening of Dendrimer-Binding Drugs. J Am Chem Soc 2010; 132:13182-4. [DOI: 10.1021/ja106128u] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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29
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Feng X, Cheng Y, Yang K, Zhang J, Wu Q, Xu T. Host−Guest Chemistry of Dendrimer−Drug Complexes. 5. Insights into the Design of Formulations for Noninvasive Delivery of Heparin Revealed by Isothermal Titration Calorimetry and NMR Studies. J Phys Chem B 2010; 114:11017-26. [DOI: 10.1021/jp105958j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xueyan Feng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
| | - Yiyun Cheng
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
| | - Kun Yang
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
| | - Jiahai Zhang
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
| | - Qinglin Wu
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
| | - Tongwen Xu
- School of Life Sciences, East China Normal University, Shanghai, 200062, People’s Republic of China, CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China, and Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People’s Republic of China
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