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Yan X, Liu B, Ru G, Feng J. Preparation and characterization of curdlan with unique single-helical conformation and its assembly with Congo Red. Carbohydr Polym 2021; 263:117985. [PMID: 33858578 DOI: 10.1016/j.carbpol.2021.117985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 12/17/2022]
Abstract
Elucidating the structure-activity relationship of curdlan is hampered by a lack of characterization with unique specific conformations (i.e., single- or triple-helix). In this study, single-helical curdlan is generated in dilute NaOH solutions at 35-50 °C, and characterized with NMR, SAXS, and GPC. The conformational transition from coil to single-helix and the intramolecular hydrogen bond interaction are explored using NMR. It is found that the two aforementioned types of curdlan interact with Congo Red in very different ways. Single-helical curdlan can encapsulate Congo Red to form a stable, supramolecular dye assembly, which is demonstrated by the shortest distance between the H3 of curdlan and the phenyl groups of Congo Red, and also the same self-diffusion coefficients of Congo Red and curdlan. In contrast, random-coil curdlan interacts weakly with Congo Red and cannot enwrap it. This study offers insight into the specific structure-activity relationship of beta-(1,3)-glucans.
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Affiliation(s)
- Xiaoshuang Yan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Biaolan Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Geying Ru
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, PR China.
| | - Jiwen Feng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, PR China
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2
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Gowsalya K, Yasothamani V, Vivek R. Emerging indocyanine green-integrated nanocarriers for multimodal cancer therapy: a review. NANOSCALE ADVANCES 2021; 3:3332-3352. [PMID: 36133722 PMCID: PMC9418715 DOI: 10.1039/d1na00059d] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/03/2021] [Indexed: 05/17/2023]
Abstract
Nanotechnology is a branch of science dealing with the development of new types of nanomaterials by several methods. In the biomedical field, nanotechnology is widely used in the form of nanotherapeutics. Therefore, the current biomedical research pays much attention to nanotechnology for the development of efficient cancer treatment. Indocyanine green (ICG) is a near-infrared tricarbocyanine dye approved by the Food and Drug Administration (FDA) for human clinical use. ICG is a biologically safe photosensitizer and it can kill tumor cells by producing singlet oxygen species and photothermal heat upon NIR irradiation. ICG has some limitations such as easy aggregation, rapid aqueous degradation, and a short half-life. To address these limitations, ICG is further formulated with nanoparticles. Therefore, ICG is integrated with organic nanomaterials (polymers, micelles, liposomes, dendrimers and protein), inorganic nanomaterials (magnetic, gold, mesoporous, calcium, and LDH based), and hybrid nanomaterials. The combination of ICG with nanomaterials provides highly efficient therapeutic effects. Nowadays, ICG is used for various biomedical applications, especially in cancer therapeutics. In this review, we mainly focus on ICG-based combined cancer nanotherapeutics for advanced cancer treatment.
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Affiliation(s)
- Karunanidhi Gowsalya
- Bio-Nano Therapeutics Research Laboratory, Cancer Research Program (CRP), School of Life Sciences, Department of Zoology, Bharathiar University Coimbatore-641 046 India
| | - Vellingiri Yasothamani
- Bio-Nano Therapeutics Research Laboratory, Cancer Research Program (CRP), School of Life Sciences, Department of Zoology, Bharathiar University Coimbatore-641 046 India
| | - Raju Vivek
- Bio-Nano Therapeutics Research Laboratory, Cancer Research Program (CRP), School of Life Sciences, Department of Zoology, Bharathiar University Coimbatore-641 046 India
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3
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Liu H, Wang J. Loading IR820 Using Multifunctional Dendrimers with Enhanced Stability and Specificity. Pharmaceutics 2018; 10:E77. [PMID: 29958414 PMCID: PMC6161036 DOI: 10.3390/pharmaceutics10030077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 06/23/2018] [Accepted: 06/24/2018] [Indexed: 01/10/2023] Open
Abstract
Cyanine dyes are promising candidates in biomedical applications. Although various delivery systems have been developed to enhance their properties, their dendrimer-based delivery systems are seldom investigated. Herein, amine-terminated generation 5 poly(amidoamine) (G5.NH₂) dendrimers and new indocyanine green (IR820) dyes were chosen as models to study the loading ability of dendrimers for cyanine dynes. G5.NH₂ dendrimers were pre-modified with arginine-glycine-aspartic (RGD) peptides, poly(ethylene glycol) chains, and acetyl groups to be endowed with cancer cell specificity and biocompatibility. The formed Ac-PR dendrimers were used to load IR820, followed by thorough characterization. The loaded number of IR820 was estimated to be 6.7 per dendrimer. The stability of IR820 was improved through dendrimer loading, which was proved by their UV-vis spectra under different kinds of storage conditions. In addition, the formed Ac-PR dendrimers can retain the loaded IR820 effectively. Their cytocompatibility was desirable under the studied conditions. Their cellular uptake behaviors were demonstrated to be enhanced by RGD modification, showing concentration-, co-incubation time-, and αvβ₃ integrin receptor-dependent properties, displaying a cytoplasm-location. The findings from this work demonstrated the versatile loading and delivery capacity of dendrimers for near-infrared (NIR) dyes, providing fundamental data for the development of dendrimer/NIR dye systems for biomedical applications, especially for cancer theranostic applications.
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Affiliation(s)
- Hui Liu
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, China.
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China.
| | - Jingjing Wang
- Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, China.
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices, Chongqing 400715, China.
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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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Ashwin BCMA, Saravanan C, Senthilkumaran M, Sumathi R, Suresh P, Muthu Mareeswaran P. Spectral and electrochemical investigation of p-sulfonatocalix[4]arene-stabilized vitamin E aggregation. Supramol Chem 2017. [DOI: 10.1080/10610278.2017.1351612] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
| | | | | | - Ragupathi Sumathi
- Department of Industrial Chemistry, Alagappa University, Karaikudi, India
| | - Palanisamy Suresh
- Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, India
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6
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Bugno J, Hsu HJ, Hong S. Recent advances in targeted drug delivery approaches using dendritic polymers. Biomater Sci 2015; 3:1025-34. [PMID: 26221937 PMCID: PMC4519693 DOI: 10.1039/c4bm00351a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Since they were first synthesized over 30 years ago, dendrimers have seen rapid translation into various biomedical applications. A number of reports have not only demonstrated their clinical utility, but also revealed novel design approaches and strategies based on the elucidation of underlying mechanisms governing their biological interactions. This review focuses on presenting the latest advances in dendrimer design, discussing the current mechanistic understandings, and highlighting recent developments and targeted approaches using dendrimers in drug/gene delivery.
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Affiliation(s)
- Jason Bugno
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Chicago, IL 60612, USA.
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7
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Akash MSH, Rehman K, Chen S. Polymeric-based particulate systems for delivery of therapeutic proteins. Pharm Dev Technol 2015; 21:367-78. [DOI: 10.3109/10837450.2014.999785] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Muhammad Sajid Hamid Akash
- Institute of Pharmacology, Toxicology, and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China,
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan, and
| | - Kanwal Rehman
- Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan, and
- Department of Toxicology, School of Medicine and Public Health, Zhejiang University, Hangzhou, China
| | - Shuqing Chen
- Institute of Pharmacology, Toxicology, and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China,
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8
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Zan M, Li J, Huang M, Lin S, Luo D, Luo S, Ge Z. Near-infrared light-triggered drug release nanogels for combined photothermal-chemotherapy of cancer. Biomater Sci 2015. [DOI: 10.1039/c5bm00048c] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Near-infrared (NIR) light-triggered drug release polymeric nanogels were fabricated based on host–guest interaction and were explored to encapsulate indocyanine green (ICG) and doxorubicin (DOX) for combined photothermal-chemotherapy of cancer.
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Affiliation(s)
- Minghui Zan
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecule-based Materials
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Junjie Li
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Mingming Huang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Shanqing Lin
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Dan Luo
- Department of Ophthalmology
- Hospital of Anhui Province
- Hefei
- China
| | - Shizhong Luo
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecule-based Materials
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
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9
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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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10
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Barra PA, Barraza L, Jiménez VA, Gavín JA, Alderete JB. Complexation of Mefenamic Acid by Low-Generation PAMAM Dendrimers: Insight from NMR Spectroscopy Studies and Molecular Dynamics Simulations. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201300398] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Pabla A. Barra
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepcion; Casilla 160-C Concepcion Chile
| | - Luis Barraza
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepcion; Casilla 160-C Concepcion Chile
| | - Verónica A. Jiménez
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepcion; Casilla 160-C Concepcion Chile
| | - José A. Gavín
- Instituto Universitario de Bioorgánica, “A. González”; Universidad de la Laguna; Avda. Astrofísico F. Sánchez 2 La Laguna Tenerife Spain
| | - Joel B. Alderete
- Departamento de Química Orgánica; Facultad de Ciencias Químicas; Universidad de Concepcion; Casilla 160-C Concepcion Chile
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11
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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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12
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Structural characterization of lyotropic liquid crystals containing a dendrimer for solubilization and release of gallic acid. Colloids Surf B Biointerfaces 2013; 112:87-95. [PMID: 23973908 DOI: 10.1016/j.colsurfb.2013.06.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 06/18/2013] [Accepted: 06/21/2013] [Indexed: 12/31/2022]
Abstract
The role of 2nd generation polypropyleneimine (PPIG2) dendrimer in controlling the release of gallic acid (GA) as a model drug from lyotropic liquid crystal was explored. GA (0.2wt%) was solubilized in three types of mesophases: lamellar (Lα), cubic (space group of Ia3d, Q(G)), and reverse hexagonal (HII), composed of GMO and water (and d-α-tocopherol, or tricaprylin in the case of HII mesophases). Small angle X-ray scattering (SAXS) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) along with UV spectrophotometry were utilized to elucidate the structure modifications and release resulting from the cosolubilization of GA and PPIG2. Solubilization of PPIG2 into Lα and Q(G) phases caused transformation of both structures to HII. The diffusion of GA out of the mesophases was found to be dependent on water content and PPIG2 concentration. Rapid release from Lα+PPIG2 and Q(G)+PPIG2 mesophases was recorded. The release from both HII mixtures (with d-α-tocopherol and tricaprylin) was shown to be dependent on the type of oil. Release studies conducted for 72h showed that GA release can be modulated and sustained by the presence of PPIG2, supposedly due to the electrostatic interactions between the dendrimer and the drug molecule.
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13
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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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14
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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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15
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Ma X, Sun Q, Zhou Z, Jin E, Tang J, Van Kirk E, Murdoch WJ, Shen Y. Synthesis of degradable bifunctional dendritic polymers as versatile drug carriers. Polym Chem 2013. [DOI: 10.1039/c2py20771k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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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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Evaluation of poly(amidoamine) dendrimers as potential carriers of iminodiacetic derivatives using solubility studies and 2D-NOESY NMR spectroscopy. J Biol Phys 2012; 38:637-56. [PMID: 23144513 PMCID: PMC3473130 DOI: 10.1007/s10867-012-9277-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 06/29/2012] [Indexed: 12/20/2022] Open
Abstract
The interactions between dendrimers and different types of drugs are nowadays one of the most actively investigated areas of the pharmaceutical sciences. The interactions between dendrimers and drugs can be divided into: internal encapsulation, external electrostatic interaction, and covalent conjugation. In the present study, we investigated the potential of poly(amidoamine) (PAMAM) dendrimers for solubility of four iminodiacetic acid derivatives. We reported that PAMAM dendrimers contribute to significant solubility enhancement of iminodiacetic acid analogues. The nature of the dendrimer–drug complexes was investigated by 1H NMR and 2D-NOESY spectroscopy. The 1H NMR analysis proved that the water-soluble supramolecular structure of the complex was formed on the basis of ionic interactions between terminal amine groups of dendrimers and carboxyl groups of drug molecules, as well as internal encapsulation. The 2D-NOESY analysis revealed interactions between the primary amine groups of PAMAM dendrimers and the analogues of iminodiacetic acid. The results of solubility studies together with 1H NMR and 2D-NOESY experiments suggest that the interactions between PAMAM dendrimers of generation 1–4 and derivatives of iminodiacetic acid are based on electrostatic interactions and internal encapsulation.
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