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Tkachenko V, Kunemann P, Malval JP, Petithory T, Pieuchot L, Vidal L, Chemtob A. Kinetically stable sub-50 nm fluorescent block copolymer nanoparticles via photomediated RAFT dispersion polymerization for cellular imaging. NANOSCALE 2022; 14:534-545. [PMID: 34935832 DOI: 10.1039/d1nr04934h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Self-assembled block copolymer nanoparticles (NPs) have emerged as major potential nanoscale vehicles for fluorescence bioimaging. The preparation of NPs with high yields possessing high kinetic stability to prevent the leakage of fluorophore molecules is crucial to their practical implementation. Here, we report a photomediated RAFT polymerization-induced self-assembly (PISA) yielding uniform and nanosized poly((oligo(ethylene glycol) acrylate)-block-poly(benzyl acrylate) particles (POEGA-b-PBzA) with a concentration of 22 wt%, over 20 times more than with micellization and nanoprecipitation. The spherical diblock copolymer nanoparticles have an average size of 10-50 nm controllable through the degree of polymerization of the stabilizing POEGA block. Subsequent dialysis against water and swelling with Nile red solution led to highly stable fluorescent NPs able to withstand the changes in concentration, ionic strength, pH or temperature. A PBzA/water interfacial tension of 48.6 mN m-1 hinders the exchange between copolymer chains, resulting in the trapping of NPs in a "kinetically frozen" state responsible for high stability. A spectroscopic study combining fluorescence and UV-vis absorption agrees with a preferential distribution of fluorophores in the outer POEGEA shell despite its hydrophobic nature. Nile red-doped POEGA-b-PBzA micelles without initiator residues and unimers but with high structural stability turn out to be noncytotoxic, and can be used for the optical imaging of cells. Real-time confocal fluorescence microscopy shows a fast cellular uptake using C2C12 cell lines in minutes, and a preferential localization in the perinuclear region, in particular in the vesicles.
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Affiliation(s)
- Vitalii Tkachenko
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Philippe Kunemann
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Jean Pierre Malval
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Tatiana Petithory
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Laurent Pieuchot
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Loïc Vidal
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Abraham Chemtob
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
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2
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Hou X, Zhong D, Li Y, Mao H, Yang J, Zhang H, Luo K, Gong Q, Gu Z. Facile fabrication of multi-pocket nanoparticles with stepwise size transition for promoting deep penetration and tumor targeting. J Nanobiotechnology 2021; 19:111. [PMID: 33874945 PMCID: PMC8054436 DOI: 10.1186/s12951-021-00854-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/07/2021] [Indexed: 02/08/2023] Open
Abstract
Background Nanocarriers-derived antitumor therapeutics are often associated with issues of limited tumor penetration and dissatisfactory antitumor efficacies. Some multistage delivery systems have been constructed to address these issues, but they are often accompanied with complicated manufacture processes and undesirable biocompatibility, which hinder their further application in clinical practices. Herein, a novel dual-responsive multi-pocket nanoparticle was conveniently constructed through self-assembly and cross-linking of amphiphilic methoxypolyethylene glycol-lipoic acid (mPEG-LA) conjugates to enhance tumor penetration and antitumor efficacy. Results The multi-pocket nanoparticles (MPNs) had a relatively large size of ~ 170 nm at physiological pH which results in prolonged blood circulation and enhanced accumulation at the tumor site. But once extravasated into acidic tumor interstices, the increased solubility of PEG led to breakage of the supramolecular nanostructure and dissolution of MPNs to small-sized (< 20 nm) nanoparticles, promoting deep penetration and distribution in tumor tissues. Furthermore, MPNs exhibited not only an excellent stable nanostructure for antitumor doxorubicin (DOX) loading, but rapid dissociation of the nanostructure under an intracellular reductive environment. With the capacity of long blood circulation, deep tumor penetration and fast intracellular drug release, the DOX-loaded multi-pocket nanoparticles demonstrated superior antitumor activities against large 4T1 tumor (~ 250 mm3) bearing mice with reduced side effect. Conclusions Our facile fabrication of multi-pocket nanoparticles provided a promising way in improving solid tumor penetration and achieving a great therapeutic efficacy. Graphic Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-00854-z.
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Affiliation(s)
- Xingyu Hou
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Dan Zhong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yunkun Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Hongli Mao
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, 211816, People's Republic of China
| | - Jun Yang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin, 300071, People's Republic of China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China. .,Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, 211816, People's Republic of China.
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3
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Liang Y, Sun Y, Fu X, Lin Y, Meng Z, Meng Y, Niu J, Lai Y, Sun Y. The effect of π-Conjugation on the self-assembly of micelles and controlled cargo release. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 48:525-532. [PMID: 32037890 DOI: 10.1080/21691401.2020.1725028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Here we presented a novel micelle self-assembled from amphiphiles with π-conjugated moieties (OEG-DPH). The π-conjugated structural integrity of the micelles enabled stable encapsulation of Nile Red (NR, model drug). The self-assembly behaviour of the amphiphiles and the release profile of NR loaded micelles were investigated. Spherical core-shell structured NR loaded micelles with low CMC of 57 μg/mL and the efficient intracellular delivery process was monitored. This research provided a way to fabricate stable polymeric micelles and develop a practical nanocarrier for therapeutics delivery.
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Affiliation(s)
- Yan Liang
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yalin Sun
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
| | - Xiaoheng Fu
- Department of Clinical laboratory, No.971 Hospital of the People's Liberation Army Navy, Qingdao, China
| | - Yang Lin
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
| | - Zhu Meng
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yanan Meng
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
| | - Jiping Niu
- Department of Nursing, Henan Vocational College of Nursing, Anyang, China
| | - Yusi Lai
- Department of Marketing, Sichuan Kelun Pharmaceutical Co, Ltd, Chengdu, China
| | - Yong Sun
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, China
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4
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Moreno A, Ronda JC, Cádiz V, Galià M, Percec V, Lligadas G. Programming Self-Assembly and Stimuli-Triggered Response of Hydrophilic Telechelic Polymers with Sequence-Encoded Hydrophobic Initiators. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Adrian Moreno
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry, University Rovira i Virgili, Tarragona 43007, Spain
| | - Juan C. Ronda
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry, University Rovira i Virgili, Tarragona 43007, Spain
| | - Virginia Cádiz
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry, University Rovira i Virgili, Tarragona 43007, Spain
| | - Marina Galià
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry, University Rovira i Virgili, Tarragona 43007, Spain
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gerard Lligadas
- Laboratory of Sustainable Polymers, Department of Analytical Chemistry and Organic Chemistry, University Rovira i Virgili, Tarragona 43007, Spain
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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5
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Khatri V, Bhatia S, Deep S, Kohli E, Haag R, Senapati NN, Prasad AK. Exploring hydrophobic diastereomeric 2,6-anhydro-glycoheptitols for their enzymatic polymerization with PEG: towards delivery applications. NEW J CHEM 2020. [DOI: 10.1039/d0nj02642e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Two sugar PEG-based amphiphilic copolymers have been synthesized by Novozym®-435-catalyzed greener solvent free transesterification reaction of diastereomeric 2,6-anhydro-glucoheptitol and 2,6-anhydro-mannoheptitol with PEG-1000 diethyl ester.
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Affiliation(s)
- Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
- Department of Chemistry, Pt. Neki Ram Sharma Government College
- Rohtak-124001
| | - Sumati Bhatia
- Institute for Chemistry and Biochemistry, Free University Berlin
- 14195 Berlin
- Germany
| | - Satyanarayan Deep
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
- DRDO, DIPAS
- Timarpur
| | | | - Rainer Haag
- Institute for Chemistry and Biochemistry, Free University Berlin
- 14195 Berlin
- Germany
| | | | - Ashok K. Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi
- Delhi 110 007
- India
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6
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Liang Y, Zhang Y, Hu Y, Xia B, Lin X, Wu Q. Lipase-catalyzed synthesis of chiral poly(ester amide)s with an alternating sequence of hydroxy acid and l/d-aspartate units. Polym Chem 2018. [DOI: 10.1039/c7py01936j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Alternating poly(hydroxyhexanoic acid-alt-l/d-β-aspartate)s with α-benzyl or α-methyl ester side groups were prepared via the enzymatic polycondensation of N-(6-hydroxyhexanoyl) l/d-aspartate diesters.
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Affiliation(s)
- Yiru Liang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Yu Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Yujing Hu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Bo Xia
- Department of Biological Environment
- Jiyang College of Zhejiang A&F University
- Zhuji 311800
- P. R. China
| | - Xianfu Lin
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Qi Wu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
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7
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Chemoenzymatic Synthesis, Nanotization, and Anti-Aspergillus Activity of Optically Enriched Fluconazole Analogues. Antimicrob Agents Chemother 2017; 61:AAC.00273-17. [PMID: 28607028 DOI: 10.1128/aac.00273-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/19/2017] [Indexed: 12/30/2022] Open
Abstract
Despite recent advances in diagnostic and therapeutic methods in antifungal research, aspergillosis still remains a leading cause of morbidity and mortality. One strategy to address this problem is to enhance the activity spectrum of known antifungals, and we now report the first successful application of Candida antarctica lipase (CAL) for the preparation of optically enriched fluconazole analogues. Anti-Aspergillus activity was observed for an optically enriched derivative, (-)-S-2-(2',4'-difluorophenyl)-1-hexyl-amino-3-(1‴,2‴,4‴)triazol-1‴-yl-propan-2-ol, which exhibits MIC values of 15.6 μg/ml and 7.8 μg/disc in broth microdilution and disc diffusion assays, respectively. This compound is tolerated by mammalian erythrocytes and cell lines (A549 and U87) at concentrations of up to 1,000 μg/ml. When incorporated into dextran nanoparticles, the novel, optically enriched fluconazole analogue exhibited improved antifungal activity against Aspergillus fumigatus (MIC, 1.63 μg/ml). These results not only demonstrate the ability of biocatalytic approaches to yield novel, optically enriched fluconazole derivatives but also suggest that enantiomerically pure fluconazole derivatives, and their nanotized counterparts, exhibiting anti-Aspergillus activity may have reduced toxicity.
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8
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Kumar S, Achazi K, Licha K, Manchanda P, Haag R, Sharma SK. Chemo-enzymatic synthesis of dendronized polymers for cyanine dye encapsulation. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21839] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Shiv Kumar
- Department of Chemistry; University of Delhi; Delhi India
| | - Katharina Achazi
- Institut für Chemie und Biochemie; Freie Universität Berlin; Berlin Germany
| | - Kai Licha
- Institut für Chemie und Biochemie; Freie Universität Berlin; Berlin Germany
| | | | - Rainer Haag
- Institut für Chemie und Biochemie; Freie Universität Berlin; Berlin Germany
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9
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Herzberger J, Leibig D, Langhanki J, Moers C, Opatz T, Frey H. “Clickable PEG” via anionic copolymerization of ethylene oxide and glycidyl propargyl ether. Polym Chem 2017. [DOI: 10.1039/c7py00173h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
First one-step synthesis of poly(ethylene glycol) bearing multiple alkyne-groups along the polyether backbone and subsequent generation of PEG-glycopolymers by CuAAC.
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Affiliation(s)
- Jana Herzberger
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Daniel Leibig
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Jens Langhanki
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
| | - Christian Moers
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Till Opatz
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
| | - Holger Frey
- Institute of Organic Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
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10
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Khatri V, Bhatia S, Achazi K, Deep S, Kohli E, Sharma SK, Haag R, Prasad AK. Lipase-mediated synthesis of sugar–PEG-based amphiphiles for encapsulation and stabilization of indocyanine green. RSC Adv 2017. [DOI: 10.1039/c7ra04994c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bio-catalytically synthesized sugar–PEG-based copolymers form stable micelles in an aqueous medium. These micelles from amphiphilic copolymer are able to efficiently solubilize and stabilize indocyanine green dye (ICG) under physiological conditions.
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Affiliation(s)
- Vinod Khatri
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- India
| | - Sumati Bhatia
- Institute for Chemistry and Biochemistry
- Free University Berlin
- Berlin 14195
- Germany
| | - Katharina Achazi
- Institute for Chemistry and Biochemistry
- Free University Berlin
- Berlin 14195
- Germany
| | - Satyanarayan Deep
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- India
- DIPAS
| | | | - Sunil K. Sharma
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- India
| | - Rainer Haag
- Institute for Chemistry and Biochemistry
- Free University Berlin
- Berlin 14195
- Germany
| | - Ashok K. Prasad
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- India
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11
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Nohara T, Sawada T, Tanaka H, Serizawa T. Enzymatic Synthesis of Oligo(ethylene glycol)-Bearing Cellulose Oligomers for in Situ Formation of Hydrogels with Crystalline Nanoribbon Network Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12520-12526. [PMID: 27340728 DOI: 10.1021/acs.langmuir.6b01635] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Enzymatic synthesis of cellulose and its derivatives has gained considerable attention for use in the production of artificial crystalline nanocelluloses with unique structural and functional properties. However, the poor colloidal stability of the nanocelluloses during enzymatic synthesis in aqueous solutions limits their crystallization-based self-assembly to greater architectures. In this study, oligo(ethylene glycol) (OEG)-bearing cellulose oligomers with different OEG chain lengths were systematically synthesized via cellodextrin phosphorylase-catalyzed oligomerization of α-d-glucose l-phosphate monomers against OEG-bearing β-d-glucose primers. The products were self-assembled into extremely well-grown crystalline nanoribbon network structures with the cellulose II allomorph, potentially due to OEG-derived colloidal stability of the nanoribbon's precursors, followed by the in situ formation of physically cross-linked hydrogels. The monomer conversions, average degree of polymerization, and morphologies of the nanoribbons changed significantly, depending on the OEG chain length. Taken together, our findings open a new avenue for the enzymatic reaction-based facile production of novel cellulosic soft materials with regular nanostructures.
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Affiliation(s)
- Takatoshi Nohara
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Toshiki Sawada
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Hiroshi Tanaka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Takeshi Serizawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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12
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Parshad B, Kumari M, Achazi K, Bӧttcher C, Haag R, Sharma SK. Chemo-Enzymatic Synthesis of Perfluoroalkyl-Functionalized Dendronized Polymers as Cyto-Compatible Nanocarriers for Drug Delivery Applications. Polymers (Basel) 2016; 8:polym8080311. [PMID: 30974586 PMCID: PMC6432502 DOI: 10.3390/polym8080311] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/04/2016] [Accepted: 08/09/2016] [Indexed: 01/22/2023] Open
Abstract
Among amphiphilic polymers with diverse skeletons, fluorinated architectures have attracted significant attention due to their unique property of segregation and self-assembly into discrete supramolecular entities. Herein, we have synthesized amphiphilic copolymers by grafting hydrophobic alkyl/perfluoroalkyl chains and hydrophilic polyglycerol [G2.0] dendrons onto a co-polymer scaffold, which itself was prepared by enzymatic polymerization of poly[ethylene glycol bis(carboxymethyl) ether]diethylester and 2-azidopropan-1,3-diol. The resulting fluorinated polymers and their alkyl chain analogs were then compared in terms of their supramolecular aggregation behavior, solubilization capacity, transport potential, and release profile using curcumin and dexamethasone drugs. The study of the release profile of encapsulated curcumin incubated with/without a hydrolase enzyme Candida antarctica lipase (CAL-B) suggested that the drug is better stabilized in perfluoroalkyl chain grafted polymeric nanostructures in the absence of enzyme for up to 12 days as compared to its alkyl chain analogs. Although both the fluorinated as well as non-fluorinated systems showed up to 90% release of curcumin in 12 days when incubated with lipase, a comparatively faster release was observed in the fluorinated polymers. Cell viability of HeLa cells up to 95% in aqueous solution of fluorinated polymers (100 μg/mL) demonstrated their excellent cyto-compatibility.
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Affiliation(s)
- Badri Parshad
- Department of Chemistry, University of Delhi, Delhi 110 007, India.
| | - Meena Kumari
- Department of Chemistry, University of Delhi, Delhi 110 007, India.
| | - Katharina Achazi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, Berlin 14195, Germany.
| | - Christoph Bӧttcher
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, Berlin 14195, Germany.
| | - Rainer Haag
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, Berlin 14195, Germany.
| | - Sunil K Sharma
- Department of Chemistry, University of Delhi, Delhi 110 007, India.
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13
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Kumar A, Khan A, Malhotra S, Mosurkal R, Dhawan A, Pandey MK, Singh BK, Kumar R, Prasad AK, Sharma SK, Samuelson LA, Cholli AL, Len C, Richards NGJ, Kumar J, Haag R, Watterson AC, Parmar VS. Synthesis of macromolecular systems via lipase catalyzed biocatalytic reactions: applications and future perspectives. Chem Soc Rev 2016; 45:6855-6887. [DOI: 10.1039/c6cs00147e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This review highlights the application of lipases in the synthesis of pharmaceutically important small molecules and polymers for diverse applications.
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14
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Zhang Y, Chan JW, Moretti A, Uhrich KE. Designing polymers with sugar-based advantages for bioactive delivery applications. J Control Release 2015; 219:355-368. [PMID: 26423239 PMCID: PMC4656084 DOI: 10.1016/j.jconrel.2015.09.053] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/22/2015] [Accepted: 09/25/2015] [Indexed: 01/18/2023]
Abstract
Sugar-based polymers have been extensively explored as a means to increase drug delivery systems' biocompatibility and biodegradation. Here,we review he use of sugar-based polymers for drug delivery applications, with a particular focus on the utility of the sugar component(s) to provide benefits for drug targeting and stimuli responsive systems. Specifically, numerous synthetic methods have been developed to reliably modify naturally-occurring polysaccharides, conjugate sugar moieties to synthetic polymer scaffolds to generate glycopolymers, and utilize sugars as a multifunctional building block to develop sugar-linked polymers. The design of sugar-based polymer systems has tremendous implications on both the physiological and biological properties imparted by the saccharide units and are unique from synthetic polymers. These features include the ability of glycopolymers to preferentially target various cell types and tissues through receptor interactions, exhibit bioadhesion for prolonged residence time, and be rapidly recognized and internalized by cancer cells. Also discussed are the distinct stimuli-sensitive properties of saccharide-modified polymers to mediate drug release under desired conditions. Saccharide-based systems with inherent pH- and temperature-sensitive properties, as well as enzyme-cleavable polysaccharides for targeted bioactive delivery, are covered. Overall, this work emphasizes inherent benefits of sugar-containing polymer systems for bioactive delivery.
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Affiliation(s)
- Yingyue Zhang
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA
| | - Jennifer W Chan
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Alysha Moretti
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA
| | - Kathryn E Uhrich
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA; Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA.
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15
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Khatri V, Kumar A, Singh B, Malhotra S, Prasad AK. Synthesis of β-C-Glycopyranosyl Aldehydes and 2,6-Anhydro-heptitols. J Org Chem 2015; 80:11169-74. [DOI: 10.1021/acs.joc.5b01933] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vinod Khatri
- Bioorganic Laboratory, Department
of Chemistry, University of Delhi, Delhi 110 007, India
| | - Amit Kumar
- Bioorganic Laboratory, Department
of Chemistry, University of Delhi, Delhi 110 007, India
| | - Balram Singh
- Bioorganic Laboratory, Department
of Chemistry, University of Delhi, Delhi 110 007, India
| | - Shashwat Malhotra
- Bioorganic Laboratory, Department
of Chemistry, University of Delhi, Delhi 110 007, India
| | - Ashok K. Prasad
- Bioorganic Laboratory, Department
of Chemistry, University of Delhi, Delhi 110 007, India
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16
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Bassanini I, Hult K, Riva S. Dicarboxylic esters: Useful tools for the biocatalyzed synthesis of hybrid compounds and polymers. Beilstein J Org Chem 2015; 11:1583-95. [PMID: 26664578 PMCID: PMC4660951 DOI: 10.3762/bjoc.11.174] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/21/2015] [Indexed: 12/23/2022] Open
Abstract
Dicarboxylic acids and their derivatives (esters and anhydrides) have been used as acylating agents in lipase-catalyzed reactions in organic solvents. The synthetic outcomes have been dimeric or hybrid derivatives of bioactive natural compounds as well as functionalized polyesters.
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Affiliation(s)
- Ivan Bassanini
- Istituto di Chimica del Riconoscimento Molecolare, CNR, via Mario Bianco 9, Milano, Italy
| | - Karl Hult
- Istituto di Chimica del Riconoscimento Molecolare, CNR, via Mario Bianco 9, Milano, Italy ; School of Biotechnology, Department of Industrial Biotechnology, Albanova KTH, Royal Institute of Technology, Stockholm, Sweden
| | - Sergio Riva
- Istituto di Chimica del Riconoscimento Molecolare, CNR, via Mario Bianco 9, Milano, Italy
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17
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Galbis JA, García-Martín MDG, de Paz MV, Galbis E. Synthetic Polymers from Sugar-Based Monomers. Chem Rev 2015; 116:1600-36. [DOI: 10.1021/acs.chemrev.5b00242] [Citation(s) in RCA: 238] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Juan A. Galbis
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
| | | | - M. Violante de Paz
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
| | - Elsa Galbis
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
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18
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Haldar U, Nandi M, Ruidas B, De P. Controlled synthesis of amino-acid based tadpole-shaped organic/inorganic hybrid polymers and their self-assembly in aqueous media. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.04.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Wilding M, Walsh EFA, Dorrian SJ, Scott C. Identification of novel transaminases from a 12-aminododecanoic acid-metabolizing Pseudomonas strain. Microb Biotechnol 2015; 8:665-72. [PMID: 25912724 PMCID: PMC4476821 DOI: 10.1111/1751-7915.12278] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/15/2015] [Accepted: 02/22/2015] [Indexed: 01/16/2023] Open
Abstract
A Pseudomonas species [Pseudomonas sp. strain amino alkanoate catabolism (AAC)] was identified that has the capacity to use 12-aminododecanoic acid, the constituent building block of homo-nylon-12, as a sole nitrogen source. Growth of Pseudomonas sp. strain AAC could also be supported using a range of additional ω-amino alkanoates. This metabolic function was shown to be most probably dependent upon one or more transaminases (TAs). Fourteen genes encoding putative TAs were identified from the genome of Pseudomonas sp. AAC. Each of the 14 genes was cloned, 11 of which were successfully expressed in Escherichia coli and tested for activity against 12-aminododecanoic acid. In addition, physiological functions were proposed for 9 of the 14 TAs. Of the 14 proteins, activity was demonstrated in 9, and of note, 3 TAs were shown to be able to catalyse the transfer of the ω-amine from 12-aminododecanoic acid to pyruvate. Based on this study, three enzymes have been identified that are promising biocatalysts for the production of nylon and related polymers.
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Affiliation(s)
- Matthew Wilding
- CSIRO Land and Water Flagship, Black Mountain, Canberra, ACT, 2601, Australia.,CSIRO Food and Nutrition Flagship, Black Mountain, Canberra, ACT, 2601, Australia
| | - Ellen F A Walsh
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Susan J Dorrian
- CSIRO Land and Water Flagship, Black Mountain, Canberra, ACT, 2601, Australia
| | - Colin Scott
- CSIRO Land and Water Flagship, Black Mountain, Canberra, ACT, 2601, Australia
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20
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Yati I, Karadag K, Sonmez HB. Amphiphilic poly(ethylene glycol) gels and their swelling features. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3498] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilker Yati
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
| | - Koksal Karadag
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
| | - Hayal Bulbul Sonmez
- Department of Chemistry; Gebze Technical University; P.O. Box 141 41400 Gebze Kocaeli Turkey
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21
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Kurniasih IN, Liang H, Mohr PC, Khot G, Rabe JP, Mohr A. Nile red dye in aqueous surfactant and micellar solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2639-48. [PMID: 25671716 DOI: 10.1021/la504378m] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The solubilization behavior of nile red dye in aqueous surfactant and micellar solutions was studied by optical spectroscopic techniques, dynamic light scattering, and atomic force microscopy. Nile red exhibits considerable absorption in the submicellar concentration region. When dispersed in aqueous surfactant and/or micellar solution, nile red molecules tend to form nonemissive dimers and/or H-type aggregates through π-π stacking interactions. This phenomenon may limit the use of nile red in solubilization studies. In the presence of ionic SDS and CTAB micelles, the solubilization of nile red appears to take place primarily at the charged micellar surface within the interfacial region. Similarly, spectra in micellar solution of nonionic Triton X-100 revealed that nile red dye penetrates the hydrophilic, interfacial poly(oxyethylene) region of the micelles but cannot reach the hydrophobic, innermost core. Our results therefore suggest that nile red dye must be chosen carefully when probing (micellar) hydrophobic environments and (micro)domains.
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Affiliation(s)
- Indah Nurita Kurniasih
- Institut für Chemie und Biochemie, Freie Universität Berlin , Takustraße 3, D-14195 Berlin, Germany
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22
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Lipid production of microalga Ankistrodesmus falcatus increased by nutrient and light starvation in a two-stage cultivation process. Appl Biochem Biotechnol 2014; 174:1471-1483. [PMID: 25119548 DOI: 10.1007/s12010-014-1126-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 07/23/2014] [Indexed: 10/24/2022]
Abstract
The aim of this work was to study the stimulation of lipid production on the microalga Ankistrodesmus falcatus by varying cultivation conditions during the stationary phase. The effect of three factors (presence and absence of nitrogen, phosphorus, and light) has been tested once the cultures reached the stationary phase with the aim to increase the value of the biomass for further applications. Lipid content, elemental composition, Nile red fluorescence evolution, and calorific value of microalgal biomass were studied as well as biomass growth. Biomass presented a lipid content of 36.54 % at the end of the first stage, while at the end of the second stage, the experiments with the absence of phosphorus increased their lipid content until 45.94 and 44.55 %, the first with nitrogen and light presence and the second with absence of all factors. The combination of phosphorus absence and nitrogen and light presence achieved the highest lipid productivity (20.27 mg/L/day). The two-stage strategy to culture microalgae is a feasible option to increase the economic or energetic value of biomass.
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23
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Gou S, Yin T, Ye Z, Jiang W, Yang C, Xia Q, Wu M. Water-soluble allyl and diallyl camphor sulfonamides-based polyacrylamide copolymers for enhanced oil recovery. J Appl Polym Sci 2014. [DOI: 10.1002/app.41238] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shaohua Gou
- State Key Lab of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu 610500 People's Republic of China
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Ting Yin
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Zhongbin Ye
- State Key Lab of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu 610500 People's Republic of China
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Wenchao Jiang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Cheng Yang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Qiang Xia
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Mingfang Wu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University; Chengdu 610500 People's Republic of China
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24
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Monteiro CM, Lourenço NMT, Ferreira FC, Afonso CAM. PEG
600
‐Carboxylates as Efficient Reusable Reaction Media and Acylating Agents for the Resolution of
sec‐
Alcohols. Chempluschem 2014. [DOI: 10.1002/cplu.201402049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Carlos M. Monteiro
- Instituto de Investigação do Medicamento(iMed.ULisboa)Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649‐003 Lisboa(Portugal)
| | - Nuno M. T. Lourenço
- Department of Bioengineering, IBB (Institute for Biotechnology and Bioengineering), Centre for Biological and Chemical Engineering, Instituto Superior Técnico, 1049‐001 Lisboa(Portugal)
| | - Frederico C. Ferreira
- Department of Bioengineering, IBB (Institute for Biotechnology and Bioengineering), Centre for Biological and Chemical Engineering, Instituto Superior Técnico, 1049‐001 Lisboa(Portugal)
| | - Carlos A. M. Afonso
- Instituto de Investigação do Medicamento(iMed.ULisboa)Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649‐003 Lisboa(Portugal)
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25
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Giorgi ME, Agusti R, de Lederkremer RM. Carbohydrate PEGylation, an approach to improve pharmacological potency. Beilstein J Org Chem 2014; 10:1433-44. [PMID: 24991298 PMCID: PMC4077506 DOI: 10.3762/bjoc.10.147] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 05/26/2014] [Indexed: 12/18/2022] Open
Abstract
Conjugation with polyethylene glycol (PEG), known as PEGylation, has been widely used to improve the bioavailability of proteins and low molecular weight drugs. The covalent conjugation of PEG to the carbohydrate moiety of a protein has been mainly used to enhance the pharmacokinetic properties of the attached protein while yielding a more defined product. Thus, glycoPEGylation was successfully applied to the introduction of a PEGylated sialic acid to a preexisting or enzymatically linked glycan in a protein. Carbohydrates are now recognized as playing an important role in host–pathogen interactions in protozoal, bacterial and viral infections and are consequently candidates for chemotherapy. The short in vivo half-life of low molecular weight glycans hampered their use but methods for the covalent attachment of PEG have been less exploited. In this review, information on the preparation and application of PEG-carbohydrates, in particular multiarm PEGylation, is presented.
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Affiliation(s)
- M Eugenia Giorgi
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - Rosalía Agusti
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - Rosa M de Lederkremer
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
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26
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Zhang J, Shi H, Wu D, Xing Z, Zhang A, Yang Y, Li Q. Recent developments in lipase-catalyzed synthesis of polymeric materials. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.02.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Aggarwal N, Arya A, Mathur D, Singh S, Tyagi A, Kumar R, Rana N, Singh R, Prasad AK. Effect of acyl chain length on selective biocatalytic deacylation on O-aryl glycosides and separation of anomers. Bioorg Chem 2014; 53:83-91. [PMID: 24632507 DOI: 10.1016/j.bioorg.2014.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 02/07/2014] [Accepted: 02/11/2014] [Indexed: 11/18/2022]
Abstract
It has been demonstrated that Lipozyme® TL IM (Thermomyces lanuginosus lipase immobilised on silica) can selectively deacylate the ester function involving the C-5' hydroxyl group of α-anomers over the other acyl functions of anomeric mixture of peracylated O-aryl α,β-D-ribofuranoside. The analysis of results of biocatalytic deacylation reaction revealed that the reaction time decreases with the increase in the acyl chain length from C1 to C4. The unique selectivity of Lipozyme® TL IM has been harnessed for the separation of anomeric mixture of peracylated O-aryl α,β-D-ribofuranosides, The lipase mediated selective deacylation methodology has been used for the synthesis of O-aryl α-D-ribofuranosides and O-aryl β-D-ribofuranosides in pure forms, which can be used as chromogenic substrate for the detection of pathogenic microbial parasites containing glycosidases.
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Affiliation(s)
- Neha Aggarwal
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Anu Arya
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Divya Mathur
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Sukhdev Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Abhilash Tyagi
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Rajesh Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Neha Rana
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Rajendra Singh
- CFEES, Brig. S.K. Mazumdar Road, Timarpur, Delhi 110 054, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India.
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28
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Khan A, Sharma SK, Kumar A, Watterson AC, Kumar J, Parmar VS. Novozym 435-catalyzed syntheses of polyesters and polyamides of medicinal and industrial relevance. CHEMSUSCHEM 2014; 7:379-390. [PMID: 24449474 DOI: 10.1002/cssc.201300343] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Indexed: 06/03/2023]
Abstract
The adverse impact of chemical and biochemical waste on the environment and human health poses a serious challenge in today's World. The best way to address these challenges is to reduce the waste by developing more efficient processes and technologies, based on the principles of "green chemistry". Some of these synthetic approaches involving the chemoenzymatic synthetic methodologies are discussed herein. These lead to the formation of unique nanomaterials with diverse applications, such as drugs/gene delivery systems, flame retardant materials, conducting polymers, controlled release systems, diagnostic agents, and polymeric electrolytes for nanocrystalline solar cells.
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Affiliation(s)
- Abdullah Khan
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007 (India)
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29
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Pal S, Ghosh Roy S, De P. Synthesis via RAFT polymerization of thermo- and pH-responsive random copolymers containing cholic acid moieties and their self-assembly in water. Polym Chem 2014. [DOI: 10.1039/c3py01317k] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Pasanphan W, Rattanawongwiboon T, Rimdusit P, Piroonpan T. Radiation-induced graft copolymerization of poly(ethylene glycol) monomethacrylate onto deoxycholate-chitosan nanoparticles as a drug carrier. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.06.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Preparation of radioactive praseodymium oxide as a multifunctional agent in nuclear medicine: expanding the horizons of cancer therapy using nanosized neodymium oxide. Nucl Med Commun 2013; 34:5-12. [PMID: 23104000 DOI: 10.1097/mnm.0b013e32835aa7bd] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Many studies have attempted to assess the significance of the use of the β(-)particle emitter praseodymium-142 ((142)Pr) in cancer treatment. As praseodymium oxide (Pr(2)O(3)) powder is not water soluble, it was dissolved in HCl solution and the resultant solution had to be pH adjusted to be in an injectable radiopharmaceutical form. Moreover, it was shown that the nanosized neodymium oxide (Nd(2)O(3)) induced massive vacuolization and cell death in non-small-cell lung cancer. In this work, the production of (142)Pr was studied and water-dispersible nanosized Pr(2)O(3) was proposed to improve the application of (142)Pr in nuclear medicine. MATERIALS AND METHODS Data from different databases pertaining to the production of (142)Pr were compared to evaluate the accuracy of the theoretical calculations. Water-dispersible nanosized Pr(2)O(3) was prepared using a poly(ethylene glycol) (PEG) coating or PEGylation method as a successful mode of drug delivery. Radioactive (142)Pr(2)O(3) was produced via a (142)Pr(n,γ)(142)Pr reaction by thermal neutron bombardment of the prepared sample. RESULTS There was good agreement between the reported experimental data and the data based on nuclear model calculations. In addition, a small part of nano-Pr(2)O(3) particles remained in suspension and most of them settled out of the water. Interestingly, the PEGylated Pr(2)O(3) nanoparticles were water dispersible. After neutron bombardment of the sample, a stable colloidal (142)Pr(2)O(3) was formed. CONCLUSION The radioactive (142)Pr(2)O(3) decays to the stable (142)Nd(2)O(3). The suggested colloidal (142)Pr(2)O(3) as a multifunctional therapeutic agent could have dual roles in cancer treatment as a radiotherapeutic agent using nanosized (142)Pr(2)O(3) and as an autophagy-inducing agent using nanosized (142)Nd(2)O(3).
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32
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Kurniasih IN, Liang H, Kumar S, Mohr A, Sharma SK, Rabe JP, Haag R. A bifunctional nanocarrier based on amphiphilic hyperbranched polyglycerol derivatives. J Mater Chem B 2013; 1:3569-3577. [PMID: 32261172 DOI: 10.1039/c3tb20366b] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We here report on the synthesis of a bifunctional nanocarrier system based on amphiphilic hyperbranched polyglycerol (hPG), which is modified by introducing hydrophobic aromatic groups to the core and retaining hydrophilic groups in the shell. "Selective chemical differentiation" and chemo-enzymatic reaction strategies were used to synthesize this new core-shell type nanocarrier. The system shows an innovative bifunctional carrier capacity with both polymeric and unimolecular micelle-like transport properties. Hydrophobic guest molecules such as pyrene were encapsulated into the hydrophobic core of modified hPG via hydrophobic interactions as well as π-π stacking, analogous to a unimolecular micelle system. A second guest molecule, which has a high affinity to the shell like nile red, was solubilized in the outer shell of the host molecule, thus connecting the nanocarrier molecules to form aggregates. This model is confirmed by UV-Vis, fluorescence, atomic force microscopy, and dynamic light scattering, as well as release studies triggered by pH-changes and enzymes. Encapsulated guest molecules, respectively in the core and in the shell, present different controlled release profiles. The bifunctional nanocarrier system is a promising candidate for simultaneous delivery of different hydrophobic drugs for a combination therapy, e.g., in tumor treatment.
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Affiliation(s)
- Indah N Kurniasih
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
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33
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Wang J, Yin C, Tang G, Lin X, Wu Q. Synthesis, characterization, and in vitro evaluation of two synergistic anticancer drug-containing hepatoma-targeting micelles formed from amphiphilic random copolymer. Biomater Sci 2013; 1:774-782. [DOI: 10.1039/c3bm60027k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Dingels C, Frey H. From Biocompatible to Biodegradable: Poly(Ethylene Glycol)s with Predetermined Breaking Points. HIERARCHICAL MACROMOLECULAR STRUCTURES: 60 YEARS AFTER THE STAUDINGER NOBEL PRIZE II 2013. [DOI: 10.1007/12_2013_235] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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35
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Glucose-functionalized multidrug-conjugating nanoparticles based on amphiphilic terpolymer with enhanced anti-tumorous cell cytotoxicity. Int J Pharm 2013. [DOI: 10.1016/j.ijpharm.2012.11.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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36
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Maiti B, De P. RAFT polymerization of fatty acid containing monomers: controlled synthesis of polymers from renewable resources. RSC Adv 2013. [DOI: 10.1039/c3ra45541f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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37
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Fleige E, Ziem B, Grabolle M, Haag R, Resch-Genger U. Aggregation Phenomena of Host and Guest upon the Loading of Dendritic Core-Multishell Nanoparticles with Solvatochromic Dyes. Macromolecules 2012. [DOI: 10.1021/ma301977r] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Emanuel Fleige
- Institut für Organische
Chemie und Biochemie, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Benjamin Ziem
- Institut für Organische
Chemie und Biochemie, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Markus Grabolle
- Division 1.10, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Straße 11, 12489
Berlin, Germany
| | - Rainer Haag
- Institut für Organische
Chemie und Biochemie, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Ute Resch-Genger
- Division 1.10, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Straße 11, 12489
Berlin, Germany
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38
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Gupta S, Tyagi R, Parmar VS, Sharma SK, Haag R. Polyether based amphiphiles for delivery of active components. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.04.047] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Giorgi ME, Ratier L, Agusti R, Frasch ACC, de Lederkremer RM. Improved bioavailability of inhibitors of Trypanosoma cruzi trans-sialidase: PEGylation of lactose analogs with multiarm polyethyleneglycol. Glycobiology 2012; 22:1363-73. [PMID: 22653661 DOI: 10.1093/glycob/cws091] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The trans-sialidase of Trypanosoma cruzi (TcTS) catalyzes the transfer of sialic acid from host glycoconjugates to terminal β-galactopyranosides in the mucins of the parasite. During infection, the enzyme is actively shed by the parasite to the bloodstream inducing hematological alterations. Lactitol prevents cell apoptosis caused by the TcTS, although it is rapidly eliminated from the circulatory system. Linear polyethyleneglycol (PEG) conjugates of lactose analogs were prepared but their clearance from blood was still quite fast. With the aim of improving their circulating half-lives in vivo, we now synthesized covalent conjugates of eight-arm PEG. The star-shape of these conjugates allows an increase in the molecular weight together with the loading of the active sugar. Two approaches were used for PEGylation of disaccharide derivatives containing β-D-Galp as the non-reducing unit. (1) Amide formation between benzyl β-D-galactopyranosyl-(1→6)-2-amino-2-deoxy-α-D-glucopyranoside and a succinimide-activated PEG. (2) Conjugation of lactobionolactone with amino end-functionalized PEG. Two 8-arm PEG derivatives (20 and 40 kDa) were used for each sugar. Substitution of all arms was proved by (1)H nuclear magnetic resonance (NMR) spectroscopy. The bioavailability of the conjugates in mice plasma was considerably improved with respect to the 5 kDa linear PEG conjugates retaining their inhibitory properties.
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Affiliation(s)
- M Eugenia Giorgi
- CIHIDECAR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Argentina
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