1
|
Georgieva D, Alexandrova M, Ivanova S, Christova D, Kostova B. Conceptualization and Investigation of Multicomponent Polymer Networks as Prospective Corticosteroid Carriers. Gels 2023; 9:470. [PMID: 37367141 DOI: 10.3390/gels9060470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/23/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023] Open
Abstract
Dexamethasone (DXM) is a highly potent and long-acting synthetic glucocorticoid with anti-inflammatory, anti-allergic, and immunosuppressive effects. However, the systemic application of DXM can cause undesirable side effects: sleep disorders, nervousness, heart rhythm disorders, heart attack, and others. In the present study, multicomponent polymer networks were developed as potential new platforms for the dermal application of dexamethasone sodium phosphate (DSP). First, a copolymer network (CPN) comprising hydrophilic segments of different chemical structures was synthesized by applying redox polymerization of dimethyl acrylamide onto poly(ethylene glycol) in the presence of poly(ethylene glycol) diacrylate (PEGDA) as a crosslinker. On this basis, an interpenetrating polymer network structure (IPN) was obtained by introducing a second network of PEGDA-crosslinked poly(N-isopropylacrylamide). Multicomponent networks obtained were characterized by FTIR, TGA, and swelling kinetics in different solvents. Both CPN and IPN showed a high swelling degree in aqueous media (up to 1800 and 1200%, respectively), reaching the equilibrium swelling within 24 h. Additionally, IPN showed temperature-responsive swelling in an aqueous solution as the equilibrium swelling degree decreased considerably with an increase in the temperature. In order to evaluate the networks' potential as drug carriers, swelling in DSP aqueous solutions of varied concentration was investigated. It was established that the amount of encapsulated DSP could be easily controlled by the concentration of drug aqueous solution. In vitro DSP release was studied in buffer solution (BS) with pH 7.4 at 37 °C. The results obtained during DSP loading and release experiments proved the feasibility of the developed multicomponent hydrophilic polymer networks as effective platforms for potential dermal application.
Collapse
Affiliation(s)
- Dilyana Georgieva
- Department of Pharmaceutical Technology and Biopharmacy, Faculty of Pharmacy, Medical University of Sofia, Dunav Str. 2, 1000 Sofia, Bulgaria
| | - Mariela Alexandrova
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 103-A, 1113 Sofia, Bulgaria
| | - Sijka Ivanova
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 103-A, 1113 Sofia, Bulgaria
| | - Darinka Christova
- Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 103-A, 1113 Sofia, Bulgaria
| | - Bistra Kostova
- Department of Pharmaceutical Technology and Biopharmacy, Faculty of Pharmacy, Medical University of Sofia, Dunav Str. 2, 1000 Sofia, Bulgaria
| |
Collapse
|
2
|
He B, Zhu Y, Xie D, Nie Y, Mei Y. Removal of Al 3+ and Mg 2+ ions in wet-process phosphoric acid via the formation of aluminofluoride complexes. ENVIRONMENTAL TECHNOLOGY 2023; 44:936-947. [PMID: 34605717 DOI: 10.1080/09593330.2021.1989055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
With the decrease in the phosphate rock grade, the minor element ratios (MER) [(Fe2O3 wt% + Al2O3 wt% + MgO wt%)/P2O5 wt%] of wet-process phosphoric acid (WPA) exhibits a linear upward trend. This can lead to a huge challenge for the high-quality production of feed calcium phosphate salt (FCPS). In the present study, we proposed a novel and economical strategy to precipitate Al3+ and Mg2+ via the formation of aluminofluoride complexes (NaMgAlF6·H2O) with the anhydrous sodium sulfate (Na2SO4) and hydrofluoric acid (HF) as precipitation agents. Because of the low solubility of the complexes in WPA, the removal efficiencies of Al3+ and Mg2+ ions could reach 99.5% and 64.8%, respectively. The maximum mass loss of P2O5 was less than 0.5%. The precipitates could be separated and converted into the HF and Na2SO4 for reuse, thus further decreasing the cost of WPA purification.
Collapse
Affiliation(s)
- Binbin He
- School of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming, People's Republic of China
| | - Yuanzhi Zhu
- School of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming, People's Republic of China
| | - Delong Xie
- School of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming, People's Republic of China
| | - Yunxiang Nie
- School of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming, People's Republic of China
| | - Yi Mei
- School of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Kunming, People's Republic of China
| |
Collapse
|
3
|
Cytarabine and dexamethasone-PAMAM dendrimer di-conjugate sensitizes human acute myeloid leukemia cells to apoptotic cell death. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
4
|
Aryl- and Superaryl-Extended Calix[4]pyrroles: From Syntheses to Potential Applications. Top Curr Chem (Cham) 2023; 381:7. [PMID: 36607442 DOI: 10.1007/s41061-022-00419-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/10/2022] [Indexed: 01/07/2023]
Abstract
The incorporation of aryl substituents at the meso-positions of calix[4]pyrrole (C4P) scaffolds produces aryl-extended (AE) and super-aryl-extended (SAE) calix[4]pyrroles. The cone conformation of the all-α isomers of "multi-wall" AE-C4Ps and SAE-C4Ps displays deep aromatic clefts or cavities. In particular, "four-wall" receptors feature an aromatic polar cavity closed at one end with four convergent pyrrole rings and fully open at the opposite end. This makes AE- and SAE-C4P scaffolds effective receptors for the molecular recognition of negatively charged ions and neutral guest molecules with donor-acceptor and hydrogen bonding motifs. In addition, adequately functionalized all-α isomers of multi wall AE- and SAE-C4P scaffolds self-assemble into uni-molecular and supra-molecular aggregates displaying capsular and cage-like structures. The self-assembly process requires the presence of template ions or molecules that lock the C4P cone conformation and complementing the inner polar functions and volumes of their cavities. We envisioned performing an in-depth revision of AE- and SAE-C4P scaffolds owing to their importance in different domains such as supramolecular chemistry, biology, material sciences and pharmaceutical chemistry. Herewith, besides the synthetic details on the elaboration of their structures, we also draw attention to their diverse applications. The organization of this review is mainly based on the number of "walls" present in the AE-C4P derivatives and their structural modifications. The sections are further divided based on the C4P functions and applications. The authors are convinced that this review will be of interest to researchers working in the general area of supramolecular chemistry as well as those involved in the study of the binding properties and applications of C4P derivatives.
Collapse
|
5
|
Intra-Articular Drug Delivery for Osteoarthritis Treatment. Pharmaceutics 2021; 13:pharmaceutics13122166. [PMID: 34959445 PMCID: PMC8703898 DOI: 10.3390/pharmaceutics13122166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 02/07/2023] Open
Abstract
Osteoarthritis (OA) is the most prevalent degenerative joint disease affecting millions of people worldwide. Currently, clinical nonsurgical treatments of OA are only limited to pain relief, anti-inflammation, and viscosupplementation. Developing disease-modifying OA drugs (DMOADs) is highly demanded for the efficient treatment of OA. As OA is a local disease, intra-articular (IA) injection directly delivers drugs to synovial joints, resulting in high-concentration drugs in the joint and reduced side effects, accompanied with traditional oral or topical administrations. However, the injected drugs are rapidly cleaved. By properly designing the drug delivery systems, prolonged retention time and targeting could be obtained. In this review, we summarize the drugs investigated for OA treatment and recent advances in the IA drug delivery systems, including micro- and nano-particles, liposomes, and hydrogels, hoping to provide some information for designing the IA injected formulations.
Collapse
|
6
|
Fang X, Gao K, Huang J, Liu K, Chen L, Piao Y, Liu X, Tang J, Shen Y, Zhou Z. Molecular level precision and high molecular weight peptide dendrimers for drug-specific delivery. J Mater Chem B 2021; 9:8594-8603. [PMID: 34705008 DOI: 10.1039/d1tb01157j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Peptide dendrimers have a broad application in biomedical science due to their biocompatibility, diversity, and multifunctionality, but the precision synthesis of high-molecule weight peptide dendrimers remains challenging. We here report the facile and liquid-phase synthesis of molecular level precision and amino-acid built-in polylysine (PLL) dendrimers with molecular weights as high as ∼60 kDa. Three types of polyhedral oligosilsesquioxane (POSS)-cored PLL dendrimers with phenylalanine, tyrosine, or histidine as building blocks were synthesized. The precise structures of the dendrimers were confirmed by MALDI-TOF MS, GPC, and 1H NMR spectroscopy. The interior functionalized peptide dendrimers improved the encapsulation capability of SN38 and sustained the release profiles. Enhanced molecular interactions between the peptide dendrimers and drugs were explored by both NMR experiments and computer simulations. The peptide dendrimer/SN38 formulations showed potent antitumor activity against multiple cancer cell lines. We believe that this strategy can be applied to the synthesis of tailor-made functional peptide dendrimers for drug-specific delivery and other diverse biomedical applications.
Collapse
Affiliation(s)
- Xinhao Fang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Kai Gao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Jianxiang Huang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Kexin Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Linying Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Ying Piao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Xiangrui Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Jianbin Tang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. .,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Zhuxian Zhou
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. .,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| |
Collapse
|
7
|
Gao X, Li L, Cai X, Huang Q, Xiao J, Cheng Y. Targeting nanoparticles for diagnosis and therapy of bone tumors: Opportunities and challenges. Biomaterials 2020; 265:120404. [PMID: 32987273 DOI: 10.1016/j.biomaterials.2020.120404] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 12/14/2022]
Abstract
A variety of targeted nanoparticles were developed for the diagnosis and therapy of orthotopic and metastatic bone tumors during the past decade. This critical review will focus on principles and methods in the design of these bone-targeted nanoparticles. Ligands including bisphosphonates, aspartic acid-rich peptides and synthetic polymers were grafted on nanoparticles such as PLGA nanoparticles, liposomes, dendrimers and inorganic nanoparticles for bone targeting. Besides, other ligands such as monoclonal antibodies, peptides and aptamers targeting biomarkers on tumor/bone cells were identified for targeted diagnosis and therapy. Examples of targeted nanoparticles for the early detection of bone metastatic tumors and the ablation of cancer via chemotherapy, photothermal therapy, gene therapy and combination therapy will be intensively reviewed. The development of multifunctional nanoparticles to break down the "vicious" cycle between tumor cell proliferation and bone resorption, and the challenges and perspectives in this area will be discussed.
Collapse
Affiliation(s)
- Xin Gao
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Department of Orthopedics Oncology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Lin Li
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Department of Orthopedics Oncology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Xiaopan Cai
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Department of Orthopedics Oncology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China
| | - Quan Huang
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Department of Orthopedics Oncology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
| | - Jianru Xiao
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Department of Orthopedics Oncology, Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
| | - Yiyun Cheng
- East China Normal University and Shanghai Changzheng Hospital Joint Research Center for Orthopedic Oncology, 200241, Shanghai, China; Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China.
| |
Collapse
|
8
|
Czarnomysy R, Bielawska A, Bielawski K. Effect of 2nd and 3rd generation PAMAM dendrimers on proliferation, differentiation, and pro-inflammatory cytokines in human keratinocytes and fibroblasts. Int J Nanomedicine 2019; 14:7123-7139. [PMID: 31564869 PMCID: PMC6731979 DOI: 10.2147/ijn.s211682] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/27/2019] [Indexed: 12/27/2022] Open
Abstract
Background Poly(amidoamine) (PAMAM) dendrimers are of considerable interest when used as a carrier for topical drugs for the skin, although little is known about their possible side effects. Therefore, our study was about the impact of 2nd and 3rd generation PAMAM dendrimers on human keratinocytes and fibroblasts cells. Methods The effect of the tested compounds on collagen biosynthesis was determined using 5[3H]-proline incorporation bioassay. Morphological changes accompanying cell growth inhibition were observed using a confocal microscope. To evaluate the percentage of apoptotic/necrotic cells and the cell growth dynamic of apoptotic features, we performed Annexin V/PI double staining assay, assessed caspase activity, and performed cell cycle analysis by flow cytometry. The flow cytometry method was also used to determine the effect of dendrimers on pro-inflammatory cytokines (IL-6, IL-8 IL-1β). Results The obtained results showed that as the concentration and the generation of dendrimers increased, collagen biosynthesis decreased. We also observed abnormalities in cell differentiation, which may have caused disturbed secretion of pro-inflammatory cytokines. We found that dendrimers cause chronic inflammation which may cause adverse changes in the skin, ultimately– leading to apoptosis in the case of dendrimers in lower concentrations or necrosis at higher concentrations (especially 3rd generation dendrimers). In addition, the inflammatory path induced by the tested compounds was caused by damage in the mitochondria, which we observed as a significant decrease in the mitochondrial membrane potential. Conclusion The results of our study showed that PAMAM dendrimers can cause disorders of cell proliferation and differentiation and may be the cause of cell cycle deregulation and chronic adverse inflammation.
Collapse
Affiliation(s)
- Robert Czarnomysy
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Bialystok 15-089, Poland
| | - Anna Bielawska
- Department of Biotechnology, Medical University of Bialystok, Bialystok 15-089, Poland
| | - Krzysztof Bielawski
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Bialystok 15-089, Poland
| |
Collapse
|
9
|
Rather IA, Wagay SA, Hasnain MS, Ali R. New dimensions in calix[4]pyrrole: the land of opportunity in supramolecular chemistry. RSC Adv 2019; 9:38309-38344. [PMID: 35540221 PMCID: PMC9076024 DOI: 10.1039/c9ra07399j] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 11/06/2019] [Indexed: 01/05/2023] Open
Abstract
The quest for receptors endowed with the selective complexation and detection of negatively charged species continues to receive substantial consideration within the scientific community worldwide. This study is encouraged by the utilization of anions in nature in a plethora of biological systems such as chloride channels and proteins and as polyanions for genetic information. The molecular recognition of anionic species is greatly interesting in terms of their favourable interactions. In this comprehensive review, in addition to giving accounts of some selected syntheses, we illustrated diverse applications ranging from molecular containers to ion transporters and drug carriers of a supramolecular receptor named calix[4]pyrrole. We believe that the present review may act as a catalyst in enhancing the novel applications of calix[4]pyrrole and its congeners in the other dimensions of science and technology. The quest for receptors endowed with the selective complexation and detection of negatively charged species continues to receive substantial consideration within the scientific community worldwide.![]()
Collapse
Affiliation(s)
| | | | | | - Rashid Ali
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi-110025
- India
| |
Collapse
|
10
|
Avila-Salas F, Pereira A, Rojas MA, Saavedra-Torres M, Montecinos R, Bonardd S, Quezada C, Saldías S, Díaz Díaz D, Leiva A, Radic D, Saldías C. An experimental and theoretical comparative study of the entrapment and release of dexamethasone from micellar and vesicular aggregates of PAMAM-PCL dendrimers. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
11
|
Tondwal R, Singh M. Effect of increasing alkyl chain of 1st tier dendrimers on binding and release activities of methotrexate drug: An in vitro study. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.07.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
12
|
Mukherjee J, Wong PT, Tang S, Gam K, Coulter A, Baker JR, Choi SK. Mechanism of Cooperativity and Nonlinear Release Kinetics in Multivalent Dendrimer–Atropine Complexes. Mol Pharm 2015; 12:4498-508. [DOI: 10.1021/acs.molpharmaceut.5b00684] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jhindan Mukherjee
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Pamela T. Wong
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Shengzhuang Tang
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kristina Gam
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Alexa Coulter
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - James R. Baker
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Seok Ki Choi
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, and Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
13
|
Guest-Host Chemistry with Dendrimers—Binding of Carboxylates in Aqueous Solution. PLoS One 2015; 10:e0138706. [PMID: 26448138 PMCID: PMC4598172 DOI: 10.1371/journal.pone.0138706] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 09/02/2015] [Indexed: 11/19/2022] Open
Abstract
Recognition and binding of anions in water is difficult due to the ability of water molecules to form strong hydrogen bonds and to solvate the anions. The complexation of two different carboxylates with 1-(4-carbomethoxypyrrolidone)-terminated PAMAM dendrimers was studied in aqueous solution using NMR and ITC binding models. Sodium 2-naphthoate and sodium 3-hydroxy-2-naphthoate were chosen as carboxylate model compounds, since they carry structural similarities to many non-steroidal anti-inflammatory drugs and they possess only a limited number of functional groups, making them ideal to study the carboxylate-dendrimer interaction selectively. The binding stoichiometry for 3-hydroxy-2-naphthoate was found to be two strongly bound guest molecules per dendrimer and an additional 40 molecules with weak binding affinity. The NOESY NMR showed a clear binding correlation of sodium 3-hydroxy-2-naphthoate with the lyophilic dendrimer core, possibly with the two high affinity guest molecules. In comparison, sodium 2-naphthoate showed a weaker binding strength and had a stoichiometry of two guests per dendrimer with no additional weakly bound guests. This stronger dendrimer interaction with sodium 3-hydroxy-2-naphthoate is possibly a result of the additional interactions of the dendrimer with the extra hydroxyl group and an internal stabilization of the negative charge due to the hydroxyl group. These findings illustrate the potential of the G4 1-(4-carbomethoxy) pyrrolidone dendrimer to complex carboxylate guests in water and act as a possible carrier of such molecules.
Collapse
|
14
|
Wong PT, Choi SK. Mechanisms of Drug Release in Nanotherapeutic Delivery Systems. Chem Rev 2015; 115:3388-432. [DOI: 10.1021/cr5004634] [Citation(s) in RCA: 349] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pamela T. Wong
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Seok Ki Choi
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
15
|
Murugan E, Yogaraj V, Geetha Rani DP, Sinha AK. Evaluation of surface acetylated and internally quaternized poly(propylene imine) dendrimer as a biocompatible drug carrier for piroxicam as a model drug. RSC Adv 2015. [DOI: 10.1039/c5ra20704e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two types of new surface acetylated and internally quaternized poly(propylene imine) dendrimers QPPI-NHAc (G2)/(G3) were prepared, characterized and then demonstrated as potential and biocompatible drug carriers using piroxicam as a model drug.
Collapse
Affiliation(s)
- E. Murugan
- Department of Physical Chemistry
- School of Chemical Sciences
- University of Madras
- Chennai – 600 025
- India
| | - V. Yogaraj
- Department of Physical Chemistry
- School of Chemical Sciences
- University of Madras
- Chennai – 600 025
- India
| | - D. P. Geetha Rani
- Department of Physical Chemistry
- School of Chemical Sciences
- University of Madras
- Chennai – 600 025
- India
| | - Alok Kumar Sinha
- Department of Science and Technology
- Nano Mission Division
- New Delhi – 110016
- India
| |
Collapse
|
16
|
Shi J, Xu Y, Wang X, Zhang L, Zhu J, Pang T, Bao X. Synthesis and evaluation of a novel Rhodamine B pyrene [2]rotaxane as an intracellular delivery agent for doxorubicin. Org Biomol Chem 2015; 13:7517-29. [DOI: 10.1039/c5ob00934k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
RhBPy [2]rotaxane has been demonstrated to be an efficient transport agent for delivering the cancer drug doxorubicin (DOX) into tumor cells.
Collapse
Affiliation(s)
- Jiaxin Shi
- Department of Biochemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P.R. China
| | - Yuan Xu
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Xinlong Wang
- Department of Chemistry
- School of Chemical Engineering
- Nanjing University of Science & Technology
- Nanjing
- P.R. China
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Jing Zhu
- Department of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- P.R. China
| | - Tao Pang
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Xiaofeng Bao
- Department of Biochemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P.R. China
| |
Collapse
|
17
|
Shao N, Dai T, Liu Y, Li L, Cheng Y. Evidence of guest encapsulation within G8 and G10 dendrimers using NMR techniques. SOFT MATTER 2014; 10:9153-9158. [PMID: 25318023 DOI: 10.1039/c4sm01381f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Encapsulation of guest molecules within the interior cavities of dendrimers is promising, but high generation dendrimers show limited encapsulation capacity due to their dense surface shell. Here, for the first time, we prove that high generation polyamidoamine dendrimers, such as generation 8 and generation 10, are able to encapsulate hydrophobic guests using NMR spectroscopy. Guest molecules such as phenylbutazone, dexamethasone sodium phosphate and 9-anthracenecarboxylic acid with molecular weights up to 516 Da are in close proximity to the interior scaffold protons of high generation dendrimers. This encapsulation behavior depends on guest hydrophobicity. Chemical defects and back-folding of terminal groups make it possible for these guest molecules to penetrate through the dense surface shell of high generation dendrimers. These results provide new insights into the host-guest chemistry of dendrimers.
Collapse
Affiliation(s)
- Naimin Shao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P.R. China.
| | | | | | | | | |
Collapse
|
18
|
Georgieva D, Kostova B, Ivanova S, Rachev D, Tzankova V, Kondeva-Burdina M, Christova D. pH-Sensitive cationic copolymers of different macromolecular architecture as potential dexamethasone sodium phosphate delivery systems. J Pharm Sci 2014; 103:2406-13. [PMID: 24961490 DOI: 10.1002/jps.24059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/19/2014] [Accepted: 05/27/2014] [Indexed: 01/08/2023]
Abstract
This paper describes the synthesis and characterization of cationic copolymers with different macromolecular architecture and drug delivery properties of the corresponding dexamethasone sodium phosphate (DSP)-loaded systems. Copolyelectrolytes comprising poly[2-(acryloyloxy)ethyl] trimethylammonium chloride (PAETMAC) and poly(ethylene glycol) blocks as well as a tri-arm star-shaped PAETMAC were synthesized using cerium(IV) ion-mediated polymerization method. The obtained copolyelectrolytes and corresponding ionic associates with DSP have been characterized by (1)H NMR, Fourier Transform Infrared spectroscopy, and differential scanning calorimetry. The average diameter, size distribution, and ζ-potential of the copolymers and DSP-copolymer ionic associates were determined by dynamic light scattering, and particles were visualized by scanning electron microscopy and transmission electron microscopy. The biocompatibility and cytotoxicity of obtained copolymers were determined. In vitro drug release experiments were carried out to estimate the ability of the obtained nanoparticles for sustained release of DSP for a period of 24 h.
Collapse
Affiliation(s)
- Dilyana Georgieva
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Medical University - Sofia, 1000 Sofia, Bulgaria
| | | | | | | | | | | | | |
Collapse
|
19
|
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.
Collapse
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.
| | | | | |
Collapse
|
20
|
Li T, Shao N, Liu Y, Hu J, Wang Y, Zhang L, Wang H, Chen D, Cheng Y. Poly(amidoamine) and Poly(propyleneimine) Dendrimers Show Distinct Binding Behaviors with Sodium Dodecyl Sulfate: Insights from SAXS and NMR Analysis. J Phys Chem B 2014; 118:3074-84. [DOI: 10.1021/jp412660p] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Tianfu Li
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Naimin Shao
- Key
Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Yuntao Liu
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Jingjing Hu
- Department
of Bioscience and Biotechnology, Dalian University of Technology, Dalian 116024, People’s Republic of China
| | - Yu Wang
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Li Zhang
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Hongli Wang
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Dongfeng Chen
- China Institute
of Atomic Energy, Beijing 102413, People’s Republic of China
| | - Yiyun Cheng
- Key
Laboratory of Regulatory Biology, 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, Shanghai 200062, People’s Republic of China
| |
Collapse
|
21
|
Molecular simulation study of PAMAM dendrimer composite membranes. J Mol Model 2014; 20:2119. [DOI: 10.1007/s00894-014-2119-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 12/14/2013] [Indexed: 01/20/2023]
|
22
|
Zhang M, Guo R, Kéri M, Bányai I, Zheng Y, Cao M, Cao X, Shi X. Impact of Dendrimer Surface Functional Groups on the Release of Doxorubicin from Dendrimer Carriers. J Phys Chem B 2014; 118:1696-706. [DOI: 10.1021/jp411669k] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mengen Zhang
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Rui Guo
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Mónika Kéri
- Department
of Colloid and Environmental Chemistry, Faculty of Science, University of Debrecen, H4032 Egyetem t.1, Debrecen, Hungary
| | - István Bányai
- Department
of Colloid and Environmental Chemistry, Faculty of Science, University of Debrecen, H4032 Egyetem t.1, Debrecen, Hungary
| | - Yun Zheng
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Mian Cao
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Xueyan Cao
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Xiangyang Shi
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
- CQM-Centro
de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal
| |
Collapse
|
23
|
Bharathi S, Wong PT, Desai A, Lykhytska O, Choe V, Kim H, Thomas TP, Baker JR, Choi SK. Design and mechanistic investigation of oxime-conjugated PAMAM dendrimers as the catalytic scavenger of reactive organophosphate. J Mater Chem B 2014; 2:1068-1078. [DOI: 10.1039/c3tb21267j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
24
|
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.
Collapse
Affiliation(s)
- Jon S Hansen
- Department of Chemistry, University of Copenhagen , Thorvaldsensvej 40, DK-1871 Frederiksberg, Copenhagen, Denmark
| | | | | | | | | | | |
Collapse
|
25
|
Solubility enhancement of Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) using polypolypropylene oxide core PAMAM dendrimers. Int J Pharm 2013; 451:18-22. [DOI: 10.1016/j.ijpharm.2013.04.062] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/16/2013] [Accepted: 04/19/2013] [Indexed: 11/19/2022]
|
26
|
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.
Collapse
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:
| |
Collapse
|
27
|
Vergara-Jaque A, Comer J, Monsalve L, González-Nilo FD, Sandoval C. Computationally efficient methodology for atomic-level characterization of dendrimer-drug complexes: a comparison of amine- and acetyl-terminated PAMAM. J Phys Chem B 2013; 117:6801-13. [PMID: 23642174 DOI: 10.1021/jp4000363] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PAMAM dendrimers have been widely studied as a novel means for controlled drug delivery; however, computational study of dendrimer-drug complexation is made difficult by the conformational flexibility of dendrimers and the nonspecific nature of the dendrimer-drug interactions. Conventional protocols for studying drug binding have been designed primarily for protein substrates, and, therefore, there is a need to establish new protocols to deal with the unique aspects of dendrimers. In this work, we generate cavities in generation-5 polyamidoamine (PAMAM) dendrimers at selected distances from the center of mass of the dendrimer for the insertion of the model drug: dexamethasone 21-phosphate or Dp21. The complexes are then allowed to equilibrate with distance between centers of mass of the drug and dendrimers confined to selected ranges; the free energy of complexation is estimated by the MM-GBSA (MM, molecular mechanics; GB, generalized Born; SA, surface area) method. For both amine- and modified acetyl-terminated PAMAM at both low and neutral pH, the most favorable free energy of complexation is associated with Dp21 at distance of 15-20 Å from the center of mass of the dendrimer and that smaller or larger distances yield considerably weaker affinity. In agreement with experimental results, we find acetyl-terminated PAMAM at neutral pH to form the least stable complex with Dp21. The greatest affinity is seen in the case of acetyl-terminated PAMAM at low pH, which appears to be due a complex balance of different contributions, which cannot be attributed to electrostatics, van der Waals interactions, hydrogen bonds, or charge-charge interactions alone.
Collapse
Affiliation(s)
- Ariela Vergara-Jaque
- Center for Bioinformatics and Molecular Simulation, Universidad de Talca, 2 norte 685, Talca-Chile
| | | | | | | | | |
Collapse
|
28
|
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).
Collapse
Affiliation(s)
- Wen-de Tian
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, China
| | | |
Collapse
|
29
|
Choksi A, Sarojini KVL, Vadnal P, Dias C, Suresh PK, Khandare J. Comparative anti-inflammatory activity of poly(amidoamine) (PAMAM) dendrimer-dexamethasone conjugates with dexamethasone-liposomes. Int J Pharm 2013; 449:28-36. [PMID: 23583708 DOI: 10.1016/j.ijpharm.2013.03.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/27/2013] [Accepted: 03/28/2013] [Indexed: 12/18/2022]
Abstract
Lipophilicity vs hydrophicility physicochemical traits are extremely important variables that are active considerations for optimizing drug delivery systems. The comparative anti-inflammatory delivery potential of dexamethasone (dex) in an encapsulation-based (liposome-lipophilic) and poly (amidoamine) (PAMAM) dendrimer prodrug conjugation-based delivery systems (hydrophilic) was performed in this work. Dendrimer prodrug conjugates were characterized by (1)H NMR. The drug encapsulation efficiency for drug in liposomes was observed to be 14.02% and this was correlated with a dose-dependent tumor necrosis factor (TNF)-α inhibition (39-57% inhibition). The biological evaluation of nanocarriers for drug was demonstrated in a standard, conventionally used in vitro cell-based system for TNF-α inhibition. This served as a comparative tool to demonstrate a quantitatively higher TNF-α inhibition (67-71.48%) produced by the dendrimer-dex drug conjugate. The structure activity relationship (dose-for-dose) was inferred by relatively lesser inhibition of TNF-α by variants of PAMAM G4 (NH2) dendrimer-dex conjugates and was compared with liposomes carrying dex. In vitro results suggest that the prodrug conjugates of PAMAM dendrimer deliver dex to be more efficient in comparison with liposome-based dex in terms of higher TNF-α inhibition. This study has implications in designing efficient prodrug nanocarrier systems for delivering dex.
Collapse
Affiliation(s)
- Arpankumar Choksi
- School of Biosciences & Technology, VIT University, Vellore, Vellore Dt., 632014, India
| | | | | | | | | | | |
Collapse
|
30
|
Cafeo G, Carbotti G, Cuzzola A, Fabbi M, Ferrini S, Kohnke FH, Papanikolaou G, Plutino MR, Rosano C, White AJP. Drug delivery with a calixpyrrole--trans-Pt(II) complex. J Am Chem Soc 2013; 135:2544-51. [PMID: 23350677 DOI: 10.1021/ja307791j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A meso-p-nitroaniline-calix[4]pyrrole derivative trans-coordinated to a Pt(II) center was synthesized and its structure solved by X-ray analysis. Adenosine monophosphate (AMP) was used as a model compound to evaluate the potential for the assisted delivery of the metal to the DNA nucleobases via the phosphate anion-binding properties of the calix[4]pyrrole unit. An NMR investigation of the kinetics of AMP complexation in the absence of an H-bonding competing solvent (dry CD(3)CN) was consistent with this hypothesis, but we could not detect the interaction of the calix[4]pyrrole with phosphate in the presence of water. However, in vitro tests of the new trans-calixpyrrole-Pt(II) complex on different cancer cell lines indicate a cytotoxic activity that is unquestionably derived from the coexistence of both the trans-Pt(II) fragment and the calix[4]pyrrole unit.
Collapse
Affiliation(s)
- Grazia Cafeo
- Dipartimento di Scienze Chimiche, Università di Messina, viale F. Stagno D'Alcontres 31, 98166 Messina, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Zhu J, Shi X. Dendrimer-based nanodevices for targeted drug delivery applications. J Mater Chem B 2013; 1:4199-4211. [DOI: 10.1039/c3tb20724b] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
32
|
Reducing cytotoxicity while improving anti-cancer drug loading capacity of polypropylenimine dendrimers by surface acetylation. Acta Biomater 2012; 8:4304-13. [PMID: 22842039 DOI: 10.1016/j.actbio.2012.07.031] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 07/15/2012] [Accepted: 07/20/2012] [Indexed: 02/04/2023]
Abstract
Polypropylenimine (PPI) dendrimers have been widely used as effective delivery vehicles for drugs and nucleic acids during the past decade. However, biomedical applications of PPI dendrimers were limited because of their serious cytotoxicity and low drug loading capacity. In the present study, acetylated PPI dendrimers with different degrees of acetylation ranging from 14.2% to 94.3% were synthesized and used to encapsulate drugs, including methotrexate sodium, sodium deoxycholate and doxorubicin. Acetylated PPI dendrimers with a degree of acetylation >80% showed a significantly decreased cytotoxicity (>90% cell viability) on MCF-7 and A549 cells. The drug loading capacity of acetylated PPI dendrimers increased proportionally with the degree of acetylation on the dendrimer surface. In addition, 94.3% acetylated PPI dendrimers exhibited a pH-responsive release profile of anticancer drugs loaded within the nanoparticles. The cytotoxicities of methotrexate sodium and doxorubicin on MCF-7 and A549 cells were significantly reduced when they were complexed with acetylated PPI dendrimers with high degrees of acetylation (>80%), owing to sustained drug release from the dendrimers. The results suggest that surface acetylation can reduce the cytotoxicity and improve the anticancer drug loading capacity of cationic dendrimers, and that acetylated PPI dendrimers are promising vehicles for anticancer drugs in clinical trials.
Collapse
|
33
|
Lee H, Ooya T. 19F-NMR, 1H-NMR, and Fluorescence Studies of Interaction between 5-Fluorouracil and Polyglycerol Dendrimers. J Phys Chem B 2012; 116:12263-7. [DOI: 10.1021/jp307710b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Haejoo Lee
- Graduate School of Engineering, Kobe University, 1-1, Rokkoudai-cho, Nada-ku, Kobe
657-8501, Japan
| | - Tooru Ooya
- Graduate School of Engineering, Kobe University, 1-1, Rokkoudai-cho, Nada-ku, Kobe
657-8501, Japan
| |
Collapse
|
34
|
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
| |
Collapse
|
35
|
Choi SK, Thomas TP, Leroueil P, Kotlyar A, Van Der Spek AFL, Baker JR. Specific and cooperative interactions between oximes and PAMAM dendrimers as demonstrated by (1)H NMR study. J Phys Chem B 2012; 116:10387-97. [PMID: 22871033 DOI: 10.1021/jp305867v] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Oximes are important in the treatment of organophosphate (OP) poisoning, but have limited biological half-lives. Complexing these drugs with a macromolecule, such as a dendrimer, could improve their pharmacokinetics. The present study investigates the intermolecular interactions that drive the complexation of oxime-based drug molecules with fifth generation poly(amidoamine) (PAMAM) dendrimers. We performed steady-state binding studies of two molecules, pralidoxime and obidoxime, employing multiple NMR methods, including 1D titration, (1)H-(1)H 2D spectroscopy (COSY, NOESY), and (1)H diffusion-ordered spectroscopy (DOSY). Several important insights were gained in understanding the host-guest interactions occurring between the drug molecules and the polymer. First, the guest molecules bind to the dendrimer macromolecule through a specific interaction rather than through random, hydrophobic encapsulation. Second, this specificity is driven primarily by the electrostatic or H-bond interaction of the oxime at a dendrimer amine site. Also, the average strength for each drug and dendrimer interaction is affected by the surface modification of the polymer. Third, individual binding events between oximes and a dendrimer have a negative cooperative effect on subsequent oxime binding. In summary, this report provides a novel perspective important for designing host systems for drug delivery.
Collapse
Affiliation(s)
- Seok Ki Choi
- Department of Internal Medicine, Michigan Nanotechnology Institute for Medicine and Biological Sciences , ‡Department of Biomedical Engineering, and §Department of Anesthesiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | | | | | | | | | | |
Collapse
|
36
|
Lewis T, Ganesan V. Mean-Field Modeling of the Encapsulation of Weakly Acidic Molecules in Polyelectrolyte Dendrimers. J Phys Chem B 2012; 116:8269-81. [DOI: 10.1021/jp3033066] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Thomas Lewis
- Department of Chemical Engineering, University of Texas at Austin, Austin,
Texas 78712, United States
| | - Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin,
Texas 78712, United States
| |
Collapse
|
37
|
Li L, Cheng C, Schürings MP, Zhu X, Pich A. Aqueous microgels modified by wedge-shaped amphiphilic molecules via acid–base interaction: Effect of alkyl chain length. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
38
|
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
| |
Collapse
|
39
|
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
| |
Collapse
|
40
|
Cabane E, Zhang X, Langowska K, Palivan CG, Meier W. Stimuli-responsive polymers and their applications in nanomedicine. Biointerphases 2012; 7:9. [PMID: 22589052 DOI: 10.1007/s13758-011-0009-3] [Citation(s) in RCA: 243] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 11/29/2011] [Indexed: 11/27/2022] Open
Abstract
This review focuses on smart nano-materials built of stimuli-responsive (SR) polymers and will discuss their numerous applications in the biomedical field. The authors will first provide an overview of different stimuli and their corresponding, responsive polymers. By introducing myriad functionalities, SR polymers present a wide range of possibilities in the design of stimuli-responsive devices, making use of virtually all types of polymer constructs, from self-assembled structures (micelles, vesicles) to surfaces (polymer brushes, films) as described in the second section of the review. In the last section of this review the authors report on some of the most promising applications of stimuli-responsive polymers in nanomedicine. In particular, we will discuss applications pertaining to diagnosis, where SR polymers are used to construct sensors capable of selective recognition and quantification of analytes and physical variables, as well as imaging devices. We will also highlight some examples of responsive systems used for therapeutic applications, including smart drug delivery systems (micelles, vesicles, dendrimers...) and surfaces for regenerative medicine.
Collapse
Affiliation(s)
- Etienne Cabane
- Chemistry Department, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland
| | | | | | | | | |
Collapse
|
41
|
Liu J, Zhou J, Luo Y. SiRNA Delivery Systems Based on Neutral Cross-Linked Dendrimers. Bioconjug Chem 2012; 23:174-83. [DOI: 10.1021/bc200433s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jie Liu
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District,
Beijing, China 100871
| | - Jihan Zhou
- Beijing
National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry
and Molecular Engineering, Peking University, Beijing, China, 100871
| | - Ying Luo
- Department of Biomedical Engineering, College of Engineering, Peking University, Room 206, Fangzheng Building, 298 Chengfu Road, Haidian District,
Beijing, China 100871
| |
Collapse
|
42
|
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.
Collapse
Affiliation(s)
- Naimin Shao
- School of Life Sciences, East China Normal University, Shanghai, China
| | | | | | | | | | | |
Collapse
|
43
|
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]
|
44
|
Wang M, Gong X, Hu J, Yu Y, Chen Q, Cheng Y. Understanding the Binding Interactions between Dendrimer and 18 Common Amino Acids by NMR Techniques. J Phys Chem B 2011; 115:12728-35. [DOI: 10.1021/jp207817f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mingming Wang
- 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,
| | - Jingjing Hu
- Department of Chemistry, University of Science and Technology of China, 230026,
P.R.China
| | - Yihua Yu
- 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
- School of Life Sciences, East China Normal University, Shanghai, 200241, P.R.China,
| |
Collapse
|