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Fatullaev EI, Shavykin OV, Neelov IM. Molecular Dynamics of Lysine Dendrigrafts in Methanol-Water Mixtures. Int J Mol Sci 2023; 24:ijms24043063. [PMID: 36834474 PMCID: PMC9963150 DOI: 10.3390/ijms24043063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/22/2023] [Accepted: 01/27/2023] [Indexed: 02/08/2023] Open
Abstract
The molecular dynamics method was used to study the structure and properties of dendrigrafts of the first and second generations in methanol-water mixtures with various volume fractions of methanol. At a small volume fraction of methanol, the size and other properties of both dendrigrafts are very similar to those in pure water. A decrease in the dielectric constant of the mixed solvent with an increase in the methanol fraction leads to the penetration of counterions into the dendrigrafts and a reduction of the effective charge. This leads to a gradual collapse of dendrigrafts: a decrease in their size, and an increase in the internal density and the number of intramolecular hydrogen bonds inside them. At the same time, the number of solvent molecules inside the dendrigraft and the number of hydrogen bonds between the dendrigraft and the solvent decrease. At small fractions of methanol in the mixture, the dominant secondary structure in both dendrigrafts is an elongated polyproline II (PPII) helix. At intermediate volume fractions of methanol, the proportion of the PPII helix decreases, while the proportion of another elongated β-sheet secondary structure gradually increases. However, at a high fraction of methanol, the proportion of compact α-helix conformations begins to increase, while the proportion of both elongated conformations decreases.
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Affiliation(s)
- Emil I. Fatullaev
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
| | - Oleg V. Shavykin
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, 119991 Moscow, Russia
- Department of Mathematics, Tver State University, Sadoviy per. 35, 170102 Tver, Russia
| | - Igor M. Neelov
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence:
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Eom KH, Li S, Lee EG, Kim JH, Kim JR, Kim I. Synthetic Polypeptides with Cationic Arginine Moieties Showing High Antimicrobial Activity in Similar Mineral Environments to Blood Plasma. Polymers (Basel) 2022; 14:polym14091868. [PMID: 35567037 PMCID: PMC9104764 DOI: 10.3390/polym14091868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
Translocation of cell-penetrating peptides is promoted by incorporated arginine or other guanidinium groups. However, relatively little research has considered the role of these functional groups on antimicrobial peptide activity. A series of cationic linear-, star- and multi-branched-poly(L-arginine-co-L-phenylalanine) have been synthesized via the ring-opening copolymerizations of corresponding N-carboxyanhydride monomers followed by further modifications using the N-heterocyclic carbene organocatalyst. All the polymers are characterized by the random coiled microstructure. Antibacterial efficacy, tested by the gram-positive B. subtilis bacteria and the gram-negative E. coli bacteria, was sensitive to the structure and relative composition of the copolymer and increased in the order of linear- < star- < multi-branched structure. The multi-branched-p[(L-arginine)23-co-(L-phenylalanine)7]8 polymer showed the best antibacterial property with the lowest minimum inhibitory concentration values of 48 μg mL−1 for E. coli and 32 μg mL−1 for B. subtilis. The efficacy was prominent for B. subtilis due to the anionic nature of its membrane. All of the resultant arginine moiety-containing polypeptides showed excellent blood compatibility. The antibiotic effect of the copolymers with arginine moieties was retained even in the environment bearing Ca2+, Mg2+, and Na+ ions similar to blood plasma. The cationic arginine-bearing copolypeptides were also effective for the sterilization of naturally occurring sources of water such as lakes, seas, rain, and sewage, showing a promising range of applicability.
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Affiliation(s)
- Kuen Hee Eom
- School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Geumjeong-gu, Busan 46241, Korea; (K.H.E.); (S.L.); (E.G.L.); (J.R.K.)
| | - Shuwei Li
- School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Geumjeong-gu, Busan 46241, Korea; (K.H.E.); (S.L.); (E.G.L.); (J.R.K.)
| | - Eun Gyeong Lee
- School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Geumjeong-gu, Busan 46241, Korea; (K.H.E.); (S.L.); (E.G.L.); (J.R.K.)
| | - Jae Ho Kim
- Department of Physiology, School of Medicine, Pusan National University, Busandaehak-ro, Mulgeum-eup, Yangsan-si 50612, Korea;
| | - Jung Rae Kim
- School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Geumjeong-gu, Busan 46241, Korea; (K.H.E.); (S.L.); (E.G.L.); (J.R.K.)
| | - Il Kim
- School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Geumjeong-gu, Busan 46241, Korea; (K.H.E.); (S.L.); (E.G.L.); (J.R.K.)
- Correspondence:
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Thompson M, Scholz C. Highly Branched Polymers Based on Poly(amino acid)s for Biomedical Application. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1119. [PMID: 33925961 PMCID: PMC8145254 DOI: 10.3390/nano11051119] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/14/2021] [Accepted: 04/20/2021] [Indexed: 01/16/2023]
Abstract
Polymers consisting of amino acid building blocks continue to receive consideration for biomedical applications. Since poly(amino acid)s are built from natural amino acids, the same building blocks proteins are made of, they are biocompatible, biodegradable and their degradation products are metabolizable. Some amino acids display a unique asymmetrical AB2 structure, which facilitates their ability to form branched structures. This review compares the three forms of highly branched polymeric structures: structurally highly organized dendrimers, dendrigrafts and the less organized, but readily synthesizable hyperbranched polymers. Their syntheses are reviewed and compared, methods of synthesis modulations are considered and variations on their traditional syntheses are shown. The potential use of highly branched polymers in the realm of biomedical applications is discussed, specifically their applications as delivery vehicles for genes and drugs and their use as antiviral compounds. Of the twenty essential amino acids, L-lysine, L-glutamic acid, and L-aspartic acid are asymmetrical AB2 molecules, but the bulk of the research into highly branched poly(amino acid)s has focused on the polycationic poly(L-lysine) with a lesser extent on poly(L-glutamic acid). Hence, the majority of potential applications lies in delivery systems for nucleic acids and this review examines and compares how these three types of highly branched polymers function as non-viral gene delivery vectors. When considering drug delivery systems, the small size of these highly branched polymers is advantageous for the delivery of inhalable drug. Even though highly branched polymers, in particular dendrimers, have been studied for more than 40 years for the delivery of genes and drugs, they have not translated in large scale into the clinic except for promising antiviral applications that have been commercialized.
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Affiliation(s)
| | - Carmen Scholz
- Department of Chemistry, University of Alabama in Huntsville, 301 Sparkman Dr., Huntsville, AL 35899, USA;
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Moorthy H, Govindaraju T. Dendrimer Architectonics to Treat Cancer and Neurodegenerative Diseases with Implications in Theranostics and Personalized Medicine. ACS APPLIED BIO MATERIALS 2021; 4:1115-1139. [PMID: 35014470 DOI: 10.1021/acsabm.0c01319] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Integration of diagnostic and therapeutic functions in a single platform namely theranostics has become a cornerstone for personalized medicine. Theranostics platform facilitates noninvasive detection and treatment while allowing the monitoring of disease progression and therapeutic efficacy in case of chronic conditions of cancer and Alzheimer's disease (AD). Theranostic tools function by themselves or with the aid of carrier, viz. liposomes, micelles, polymers, or dendrimers. The dendrimer architectures (DA) are well-characterized molecular nanoobjects with a large number of terminal functional groups to enhance solubility and offer multivalency and multifunctional properties. Various noninvasive diagnostic tools like magnetic resonance imaging (MRI), computed tomography (CT), gamma scintigraphy, and optical techniques have been accomplished utilizing DAs for simultaneous imaging and drug delivery. Obstacles in the formulation design, drug loading, payload delivery, biocompatibility, overcoming cellular membrane and blood-brain barrier (BBB), and systemic circulation remain a bottleneck in translational efforts. This review focuses on the diagnostic, therapeutic and theranostic potential of DA-based nanocarriers in treating cancer and neurodegenerative disorders like AD and Parkinson's disease (PD), among others. In view of the inverse relationship between cancer and AD, designing suitable DA-based theranostic nanodrug with high selectivity has tremendous implications in personalized medicine to treat cancer and neurodegenerative disorders.
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Affiliation(s)
- Hariharan Moorthy
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru, Karnataka 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru, Karnataka 560064, India
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Dai Y, Hu Z, Wang X, Liu X, Li Y, Shi Y, Chen Y. Synthesis of fully degradable cationic polymers with various topological structures via postpolymerization modification by using thio-bromo “click” reaction. Polym Chem 2021. [DOI: 10.1039/d1py00106j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(ε-caprolactone) (PCL) based and fully degradable cationic polymers with various topological structures and tunable charge densities were prepared via postpolymerization modification using thio-bromo “click” chemistry.
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Affiliation(s)
- Yunkai Dai
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Zhitao Hu
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Xiaoying Wang
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Xingliang Liu
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Yuanchao Li
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Yi Shi
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
| | - Yongming Chen
- School of Materials Science and Engineering
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education
- Guangdong Functional Biomaterials Engineering Technology Research Center
- Sun Yat-Sen University
- Guangzhou 510006
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Yan X, Zhou M, Yu S, Jin Z, Zhao K. An overview of biodegradable nanomaterials and applications in vaccines. Vaccine 2019; 38:1096-1104. [PMID: 31813649 DOI: 10.1016/j.vaccine.2019.11.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/30/2019] [Accepted: 11/13/2019] [Indexed: 02/07/2023]
Abstract
Vaccination is the most cost-effective and sustainable way to prevent and eliminate infectious diseases. Compared with traditional vaccines, novel vaccines have better stability, longer duration and require less antigen usage. In addition, novel vaccines have better immune effects and significantly less toxic side effects. However, both novel vaccines and traditional vaccines require carrier molecules or adjuvants to produce an optimal immune response. There is an increasing demand for vaccine adjuvants and delivery systems that can induce stronger immune response whilst reducing production cost and the dose of vaccine. In recent years, nanotechnology has played an important role in the development of novel vaccine adjuvants and nano-delivery systems. Biodegradable materials have also received a lot of attention in medical science because they have excellent biocompatibility, biodegradability and low toxicity, which can protect antigens from degradation, increase antigen stability and provide slow release; resulting in enhanced immunogenicity. Therefore, biodegradable nanoparticles have attracted much attention in the formulation of vaccines. In this review, we outline some key features of biodegradable nanomaterials in the developing safer and more effective vaccines. The properties, structural characteristics, advantages and disadvantage of the biodegradable nanomaterials will be systematically reviewed. Additionally, applications, research progress and future prospects of biodegradable nanomaterials are discussed. This review will be help in future research work directed at developing biodegradable vaccine adjuvants or delivery carriers.
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Affiliation(s)
- Xingye Yan
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin 150080, China; Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China
| | - Mo Zhou
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin 150080, China; Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China
| | - Shuang Yu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin 150080, China; Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China
| | - Zheng Jin
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion, College of Chemistry and Material Sciences, Heilongjiang University, Harbin 150080, China
| | - Kai Zhao
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin 150080, China; Key Laboratory of Microbiology, College of Heilongjiang Province, School of Life Science, Heilongjiang University, Harbin 150080, China.
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7
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Gabas IM, Nielsen PE. Effective Cellular Delivery of Antisense Peptide Nucleic Acid by Conjugation to Guanidinylated Diaminobutanoic Acid-Based Peptide Dendrons. Biomacromolecules 2019; 21:472-483. [PMID: 31756087 DOI: 10.1021/acs.biomac.9b01227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A series of amino- and guanidino-terminating 3- and 4-generation 2,4-diaminobutanoic acid (Dab) dendrons have been robustly synthesized on a solid phase and characterized as cellular delivery agents in antisense peptide nucleic acid (PNA) conjugates in the pLuc705 HeLa cell splice switching system. The dendron-PNA conjugates exhibited splice correction activity at one digit micromolar concentrations, and guanidino-terminating dendrons were significantly more effective than analogous amine terminating ones. Furthermore, introduction of lipophilic groups such as phenyl, alkyl, or fatty acids increased efficacy, but also increased cellular toxicity. Fluorescence microscopy analyses supported an endosomal uptake mechanism and furthermore predominantly showed colocalization with late endosomes and lysosomes. The robust solid phase synthesis should make such Dab-dendrons a useful platform for further in vitro as well as in vivo optimization.
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Affiliation(s)
- Isabel Maicas Gabas
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, The Panum Institute , University of Copenhagen , Blegdamsvej 3 , 2200 Copenhagen , Denmark
| | - Peter E Nielsen
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, The Panum Institute , University of Copenhagen , Blegdamsvej 3 , 2200 Copenhagen , Denmark
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9
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Tziveleka LA, Pippa N, Georgantea P, Ioannou E, Demetzos C, Roussis V. Marine sulfated polysaccharides as versatile polyelectrolytes for the development of drug delivery nanoplatforms: Complexation of ulvan with lysozyme. Int J Biol Macromol 2018; 118:69-75. [PMID: 29906535 DOI: 10.1016/j.ijbiomac.2018.06.050] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/17/2018] [Accepted: 06/11/2018] [Indexed: 11/26/2022]
Abstract
Ulvan, a marine sulfated polysaccharide isolated from green algae, has been recently recognized as a natural biopolymer of biomedical interest. A series of lysozyme/ulvan complexes prepared under various charge ratios at physiological pH were studied. The resulting complexes were examined with light scattering techniques in order to characterize the size, the distribution and the ζ-potential of the nanocarriers, which were found to depend on the charge ratio employed. Increased complexation efficiency of lysozyme was observed for certain charge ratios, while ATR-FTIR data suggested that the protein structure after complexation was retained. Bacterial growth studies showed that lysozyme once complexed with ulvan not only retains its antibacterial activity against the Gram positive strain Staphylococcus aureus, but actually exhibits increased levels of activity. In this model study, the results highlight the potential of ulvan as a promising nanocarrier for positively charged bioactive molecules.
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Affiliation(s)
- Leto-Aikaterini Tziveleka
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
| | - Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
| | - Panagiota Georgantea
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
| | - Costas Demetzos
- Section of Pharmaceutical Technology, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece.
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Nagatani H, Fujisawa M, Imura H. Mechanistic Analysis of Ion Association between Dendrigraft Poly-l-lysine and 8-Anilino-1-naphthalenesulfonate at Liquid|Liquid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3237-3243. [PMID: 29457910 DOI: 10.1021/acs.langmuir.8b00131] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molecular association between biocompatible dendritic polymers, dendrigraft poly-l-lysines (DGLs), and an anionic fluorescent probe, 8-anilino-1-naphthalenesulfonate (ANS-), was studied at the polarized water|1,2-dichloroethane (DCE) interface. The fluorescence intensity of ANS measured in aqueous solution was enhanced by the coexistence of DGLs over a wide pH range (2 < pH < 10), where ANS and DGL exist as a monoanionic form and a polycation, respectively. The voltammetric responses indicated that the positively charged DGLs were adsorbed at the water|DCE interface, whereas ANS- was transferred across the interface accompanied by the adsorption process. The interfacial behavior of the DGL-ANS associates was analyzed by potential-modulated fluorescence (PMF) spectroscopy. The PMF results demonstrated that the ion association between DGLs and ANS at the water|DCE interface is strongly affected by the applied potential and the dendritic generation of DGL. By applying appropriate potentials, the ANS anion was dissociated from its ion associate with DGLs at the interface and transferred into the organic phase, whereas DGLs remained in the aqueous phase. The Gibbs free energy of ion association (Δ GD···ANS) was estimated for the second-fourth generation DGLs (DGL-G2-G4) and the G4 polyamidoamine (PAMAM) dendrimer as a control. The highest stability of the DGL-G4-ANS associate manifested itself through Δ GD···ANS: DGL-G4-ANS (>G4 PAMAM dendrimer-ANS) > DGL-G3-ANS > DGL-G2-ANS. The results elucidated the efficient anion-binding ability of higher generation DGLs and its potential dependence at the liquid|liquid interface.
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Francoia JP, Vial L. Everything You Always Wanted to Know about Poly-l-lysine Dendrigrafts (But Were Afraid to Ask). Chemistry 2018; 24:2806-2814. [PMID: 29034997 DOI: 10.1002/chem.201704147] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/12/2017] [Indexed: 12/12/2022]
Abstract
Less than a decade ago, dendrigrafts of poly-l-lysine (DGLs) joined the family of polycationic dendritic macromolecules. Resulting from the iterative polycondensation of an N-carboxyanhydride in water, four generations of the dendrigraft can be obtained on a multigram scale and without chromatographic purification. DGLs share features with both dendrimers and hyperbranched polymers, but turned out to have unique biophysical and bioactive properties. The macromolecules-in their native form or functionalized-have been extensively characterized by various analytical and computational methods, and have already found numerous applications in the biomedical field, such as drug and gene delivery, biomaterials, tissue engineering, bioimaging, and biosensing. Despite a growing interest for DGLs, there is still plenty of room for further exciting developments that could result from a better exposure of these macromolecules, which is the ambition of this short review.
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Affiliation(s)
| | - Laurent Vial
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS-Université de Montpellier-ENSCM, Place Eugène, Bataillon, 34296, Montpellier cedex 5, France.,Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS-Université Claude Bernard, Lyon 1-CPE Lyon-INSA, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne cedex, France
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Francoia JP, Rossi JC, Monard G, Vial L. Digitizing Poly-l-lysine Dendrigrafts: From Experimental Data to Molecular Dynamics Simulations. J Chem Inf Model 2017; 57:2173-2180. [PMID: 28853871 DOI: 10.1021/acs.jcim.7b00258] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Despite the growing use of poly-l-lysine dendrigrafts in biomedical applications, a deeper understanding of the molecular level properties of these macromolecules is missing. Herein, we report a simple methodology for the construction of three-dimensional structures of poly-l-lysine dendrigrafts and the subsequent investigation of their structural features using microsecond molecular dynamics simulations. This methodology relies on the encoding of the polymers' experimental characterizations (i.e., composition, degrees of polymerization, branching ratios, charges) into alphanumeric strings that are readable by the Amber simulation package. Such an original approach opens avenues toward the in silico exploration of dendrigrafts and hyperbranched polymers.
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Affiliation(s)
- Jean-Patrick Francoia
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Université de Montpellier, ENSCM , Place Eugéne Bataillon, 34296 Montpellier cedex 5, France
| | - Jean-Christophe Rossi
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Université de Montpellier, ENSCM , Place Eugéne Bataillon, 34296 Montpellier cedex 5, France
| | - Gerald Monard
- Université de Lorraine, UMR 7565 SRSMC , Boulevard des Aiguillettes B.P. 70239, F-54506 Vandoeuvre-les-Nancy, France.,CNRS, UMR 7565 SRSMC , Boulevard des Aiguillettes B.P. 70239, F-54506 Vandoeuvre-les-Nancy, France
| | - Laurent Vial
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Université de Montpellier, ENSCM , Place Eugéne Bataillon, 34296 Montpellier cedex 5, France.,Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS, Université Claude Bernard Lyon 1, CPE Lyon, INSA , 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France
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Zhang C, Ling CL, Pang L, Wang Q, Liu JX, Wang BS, Liang JM, Guo YZ, Qin J, Wang JX. Direct Macromolecular Drug Delivery to Cerebral Ischemia Area using Neutrophil-Mediated Nanoparticles. Am J Cancer Res 2017; 7:3260-3275. [PMID: 28900508 PMCID: PMC5595130 DOI: 10.7150/thno.19979] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 05/10/2017] [Indexed: 12/17/2022] Open
Abstract
Delivery of macromolecular drugs to the brain is impeded by the blood brain barrier. The recruitment of leukocytes to lesions in the brain, a typical feature of neuroinflammation response which occurs in cerebral ischemia, offers a unique opportunity to deliver drugs to inflammation sites in the brain. In the present study, cross-linked dendrigraft poly-L-lysine (DGL) nanoparticles containing cis-aconitic anhydride-modified catalase and modified with PGP, an endogenous tripeptide that acts as a ligand with high affinity to neutrophils, were developed to form the cl PGP-PEG-DGL/CAT-Aco system. Significant binding efficiency to neutrophils, efficient protection of catalase enzymatic activity from degradation and effective transport to receiver cells were revealed in the delivery system. Delivery of catalase to ischemic subregions and cerebral neurocytes in MCAO mice was significantly enhanced, which obviously reducing infarct volume in MCAO mice. Thus, the therapeutic outcome of cerebral ischemia was greatly improved. The underlying mechanism was found to be related to the inhibition of ROS-mediated apoptosis. Considering that neuroinflammation occurs in many neurological disorders, the strategy developed here is not only promising for treatment of cerebral ischemia but also an effective approach for various CNS diseases related to inflammation.
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A Nanoscale Polymeric Penetration Enhancer Based on Polylysine for Topical Delivery of Proteins and Peptides. J Pharm Sci 2016; 105:3585-3593. [DOI: 10.1016/j.xphs.2016.08.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 07/25/2016] [Accepted: 08/25/2016] [Indexed: 11/22/2022]
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15
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Al-Qadi S, Alatorre-Meda M, Martin-Pastor M, Taboada P, Remuñán-López C. The role of hyaluronic acid inclusion on the energetics of encapsulation and release of a protein molecule from chitosan-based nanoparticles. Colloids Surf B Biointerfaces 2016; 141:223-232. [DOI: 10.1016/j.colsurfb.2016.01.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 01/15/2016] [Accepted: 01/17/2016] [Indexed: 10/22/2022]
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16
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Effective incorporation of insulin in mucus permeating self-nanoemulsifying drug delivery systems. Eur J Pharm Biopharm 2015; 97:223-9. [DOI: 10.1016/j.ejpb.2015.04.013] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 04/15/2015] [Accepted: 04/21/2015] [Indexed: 01/09/2023]
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17
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Shi C, He Y, Feng X, Fu D. ε-Polylysine and next-generation dendrigraft poly-L-lysine: chemistry, activity, and applications in biopharmaceuticals. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:1343-56. [DOI: 10.1080/09205063.2015.1095023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Pippa N, Kalinova R, Dimitrov I, Pispas S, Demetzos C. Insulin/poly(ethylene glycol)-block-poly(l-lysine) Complexes: Physicochemical Properties and Protein Encapsulation. J Phys Chem B 2015; 119:6813-9. [DOI: 10.1021/acs.jpcb.5b01664] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Natassa Pippa
- Department
of Pharmaceutical Technology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece
- Theoretical
and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave, Athens 11635, Greece
| | - Radostina Kalinova
- Institute
of Polymers, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Ivaylo Dimitrov
- Institute
of Polymers, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Stergios Pispas
- Theoretical
and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave, Athens 11635, Greece
| | - Costas Demetzos
- Department
of Pharmaceutical Technology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece
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19
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Labieniec-Watala M, Watala C. PAMAM Dendrimers: Destined for Success or Doomed to Fail? Plain and Modified PAMAM Dendrimers in the Context of Biomedical Applications. J Pharm Sci 2015; 104:2-14. [DOI: 10.1002/jps.24222] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 10/02/2014] [Accepted: 10/03/2014] [Indexed: 01/17/2023]
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20
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Ren Y, Gao Q, Zhou C, Wei Z, Zhang Y, Li Y. Facile synthesis of well-defined linear-comb highly branched poly(ε-caprolactone) using hydroxylated polybutadiene and organocatalyst. RSC Adv 2015. [DOI: 10.1039/c4ra17276k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A simple method was proposed to synthesize well-defined linear-comb highly branched poly(ε-caprolactone) with high molecular weight and narrow polydispersity.
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Affiliation(s)
- Yingying Ren
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Qing Gao
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Cheng Zhou
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Zhiyong Wei
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yu Zhang
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yang Li
- State Key Laboratory of Fine Chemicals
- Department of Polymer Materials
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
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21
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Thanassoulas A, Barthélémy P, Navailles L, Sigaud G. From nucleobases to nucleolipids: an ITC approach on the thermodynamics of their interactions in aqueous solutions. J Phys Chem B 2014; 118:6570-85. [PMID: 24911942 DOI: 10.1021/jp411459w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Hybrid constructions based on nucleosides and lipophilic components, known as nucleolipids, have become an extremely interesting class of molecules, especially for their potential biomedical applications. In this matter, it seemed important to define the nature and estimate the strength of their interaction with polynucleotides by different ways. We report in this work a systematic investigation through isothermal titration calorimetry of the thermodynamics of the association and dissociation of adenine and thymine derivatives, not previously performed. Then we use the results obtained on these simple systems as a basis for comparison with the binding of phospholipids functionalized with adenosine and thymidine to polyadenylic or polyuridylic acids applying the same experimental technique.
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22
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Couturaud B, Molero Bondia A, Faye C, Garrelly L, Mas A, Robin JJ. Grafting of poly-L-lysine dendrigrafts onto polypropylene surface using plasma activation for ATP immobilization - Nanomaterial for potential applications in biotechnology. J Colloid Interface Sci 2013; 408:242-51. [PMID: 23928489 DOI: 10.1016/j.jcis.2013.06.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 06/27/2013] [Accepted: 06/28/2013] [Indexed: 11/19/2022]
Abstract
The present work describes a new environmental friendly strategy for the development of surfaces with high amine density via the grafting of native or modified poly-L-lysine dendrigraft (DGL G3) onto plasma activated polypropylene (PP), polystyrene (PS), polyimide, and polytetrafluoroethylene (PTFE) surface. Modified DGL G3 was prepared by replacement of few peripheral amines by various functionalities. Grafting efficiency was determined by wettability measurements, IRTF, XPS, AFM, and by colorimetry using optimized Coomassie Brilliant Blue method tailored for surface analysis. It was shown that a 4-7nm DGL G3 monolayer with 4×10(14)aminecm(-)(2) was covalently grafted onto various surfaces. Immobilization of adenosine triphosphate on the DGL-g-PP material from dilute solution was studied by bioluminescence and proved the ability of the material to interact with polyanionic biological compounds: 1 ATP complex with 5 amine groups. So, this material has a potential use in diagnostic and more widely for biotechnology due to its high capacity for biomolecule immobilization.
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Affiliation(s)
- Benoit Couturaud
- Institut Charles Gerhardt, Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier 2, cc1702, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
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23
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Vanea E, Gruian C, Rickert C, Steinhoff HJ, Simon V. Structure and Dynamics of Spin-Labeled Insulin Entrapped in a Silica Matrix by the Sol–Gel Method. Biomacromolecules 2013; 14:2582-92. [DOI: 10.1021/bm4003893] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- E. Vanea
- Faculty of Physics & Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes-Bolyai University, Cluj-Napoca, Romania
| | - C. Gruian
- Faculty of Physics & Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes-Bolyai University, Cluj-Napoca, Romania
| | - C. Rickert
- Department of Physics, University of Osnabrück, Osnabrück, Germany
| | - H.-J. Steinhoff
- Department of Physics, University of Osnabrück, Osnabrück, Germany
| | - V. Simon
- Faculty of Physics & Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes-Bolyai University, Cluj-Napoca, Romania
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24
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Controlled lateral packing of insulin monolayers influences neuron polarization in solid-supported cultures. Colloids Surf B Biointerfaces 2013; 107:59-67. [PMID: 23466543 DOI: 10.1016/j.colsurfb.2013.01.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 01/24/2013] [Accepted: 01/29/2013] [Indexed: 12/21/2022]
Abstract
Neurons are highly polarized cells, composed of one axon and several branching dendrites. One important issue in neurobiology is to understand the molecular factors that determine the neuron to develop polarized structures. A particularly early event, in neurons still lacking a discernible axon, is the segregation of IGF-1 (Insulin like Growth Factor-1) receptors in one neurite. This receptor can be activated by insulin in bulk, but, it is not known if changes of insulin organization as a monomolecular film may affect neuron polarization. To this end, in this work we developed solid-supported Langmuir-Blodgett films of insulin with different surface packing density. Hyppocampal pyramidal neurons, in early stage of differentiation, were cultured onto those substrates and polarization was studied after 24 h by confocal microscopy. Also we used surface reflection interference contrast microscopy and confocal microscopy to study attachment patterns and morphology of growth cones. We observed that insulin films packed at 14 mN/m induced polarization in a similar manner to high insulin concentration in bulk, but insulin packed at 44 mN/m did not induce polarization. Our results provide novel evidence that the neuron polarization through IGF-1 receptor activation can be selectively modulated by the lateral packing of insulin organized as a monomolecular surface for cell growth.
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25
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Lo ST, Kumar A, Hsieh JT, Sun X. Dendrimer nanoscaffolds for potential theranostics of prostate cancer with a focus on radiochemistry. Mol Pharm 2013; 10:793-812. [PMID: 23294202 DOI: 10.1021/mp3005325] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Dendrimers are a class of structurally defined macromolecules featured with a central core, a low-density interior formed by repetitive branching units, and a high-density exterior terminated with surface functional groups. In contrast to their polymeric counterparts, dendrimers are nanosized and symmetrically shaped, which can be reproducibly synthesized on a large scale with monodispersity. These unique features have made dendrimers of increasing interest for drug delivery and other biomedical applications as nanoscaffold systems. Intended to address the potential use of dendrimers for the development of theranostic agents, which combines therapeutics and diagnostics in a single entity for personalized medicine, this review focuses on the reported methodologies of using dendrimer nanoscaffolds for targeted imaging and therapy of prostate cancer. Of particular interest, relevant chemistry strategies are discussed due to their important roles in the design and synthesis of diagnostic and therapeutic dendrimer-based nanoconjugates and potential theranostic agents, targeted or nontargeted. Given the developing status of nanoscaffolded theranostics, major challenges and potential hurdles are discussed along with the examples representing current advances.
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Affiliation(s)
- Su-Tang Lo
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
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26
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Insulin complexes with PEGylated basic oligopeptides. J Colloid Interface Sci 2012; 384:61-72. [DOI: 10.1016/j.jcis.2012.06.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/18/2012] [Accepted: 06/19/2012] [Indexed: 12/23/2022]
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27
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Samal SK, Dash M, Van Vlierberghe S, Kaplan DL, Chiellini E, van Blitterswijk C, Moroni L, Dubruel P. Cationic polymers and their therapeutic potential. Chem Soc Rev 2012; 41:7147-94. [PMID: 22885409 DOI: 10.1039/c2cs35094g] [Citation(s) in RCA: 464] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The last decade has witnessed enormous research focused on cationic polymers. Cationic polymers are the subject of intense research as non-viral gene delivery systems, due to their flexible properties, facile synthesis, robustness and proven gene delivery efficiency. Here, we review the most recent scientific advances in cationic polymers and their derivatives not only for gene delivery purposes but also for various alternative therapeutic applications. An overview of the synthesis and preparation of cationic polymers is provided along with their inherent bioactive and intrinsic therapeutic potential. In addition, cationic polymer based biomedical materials are covered. Major progress in the fields of drug and gene delivery as well as tissue engineering applications is summarized in the present review.
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Affiliation(s)
- Sangram Keshari Samal
- Polymer Chemistry & Biomaterials Research Group, Ghent University, Krijgslaan 281, S4-Bis, B-9000 Ghent, Belgium.
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28
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Quadir MA, Haag R. Biofunctional nanosystems based on dendritic polymers. J Control Release 2012; 161:484-95. [DOI: 10.1016/j.jconrel.2011.12.040] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 12/28/2011] [Accepted: 12/29/2011] [Indexed: 11/30/2022]
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29
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Rossi JC, Boiteau L, Collet H, Mbondo Tsamba B, Larcher N, Pascal R. Functionalisation of free amino groups of lysine dendrigraft (DGL) polymers. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.082] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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30
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Ghai R, Falconer RJ, Collins BM. Applications of isothermal titration calorimetry in pure and applied research--survey of the literature from 2010. J Mol Recognit 2012; 25:32-52. [PMID: 22213449 DOI: 10.1002/jmr.1167] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Isothermal titration calorimetry (ITC) is a biophysical technique for measuring the formation and dissociation of molecular complexes and has become an invaluable tool in many branches of science from cell biology to food chemistry. By measuring the heat absorbed or released during bond formation, ITC provides accurate, rapid, and label-free measurement of the thermodynamics of molecular interactions. In this review, we survey the recent literature reporting the use of ITC and have highlighted a number of interesting studies that provide a flavour of the diverse systems to which ITC can be applied. These include measurements of protein-protein and protein-membrane interactions required for macromolecular assembly, analysis of enzyme kinetics, experimental validation of molecular dynamics simulations, and even in manufacturing applications such as food science. Some highlights include studies of the biological complex formed by Staphylococcus aureus enterotoxin C3 and the murine T-cell receptor, the mechanism of membrane association of the Parkinson's disease-associated protein α-synuclein, and the role of non-specific tannin-protein interactions in the quality of different beverages. Recent developments in automation are overcoming limitations on throughput imposed by previous manual procedures and promise to greatly extend usefulness of ITC in the future. We also attempt to impart some practical advice for getting the most out of ITC data for those researchers less familiar with the method.
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Affiliation(s)
- Rajesh Ghai
- Institute for Molecular Bioscience (IMB), University of Queensland, St. Lucia, Queensland, 4072, Australia
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31
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Cheng J, Ling X, Zhong Z, Zhuo R. Synthesis of Dendrigraft Poly(ϵ-Caprolactone)s Using Side Hydroxyl Groups for the Grafting of Branch Chains. Macromol Rapid Commun 2011; 32:1839-45. [DOI: 10.1002/marc.201100465] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 08/14/2011] [Indexed: 11/07/2022]
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