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Van Guyse JFR, Abbasi S, Toh K, Nagorna Z, Li J, Dirisala A, Quader S, Uchida S, Kataoka K. Facile Generation of Heterotelechelic Poly(2-Oxazoline)s Towards Accelerated Exploration of Poly(2-Oxazoline)-Based Nanomedicine. Angew Chem Int Ed Engl 2024; 63:e202404972. [PMID: 38651732 DOI: 10.1002/anie.202404972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 04/25/2024]
Abstract
Controlling the end-groups of biocompatible polymers is crucial for enabling polymer-based therapeutics and nanomedicine. Typically, end-group diversification is a challenging and time-consuming endeavor, especially for polymers prepared via ionic polymerization mechanisms with limited functional group tolerance. In this study, we present a facile end-group diversification approach for poly(2-oxazoline)s (POx), enabling quick and reliable production of heterotelechelic polymers to facilitate POxylation. The approach relies on the careful tuning of reaction parameters to establish differential reactivity of a pentafluorobenzyl initiator fragment and the living oxazolinium chain-end, allowing the selective introduction of N-, S-, O-nucleophiles via the termination of the polymerization, and a consecutive nucleophilic para-fluoro substitution. The value of this approach for the accelerated development of nanomedicine is demonstrated through the synthesis of well-defined lipid-polymer conjugates and POx-polypeptide block-copolymers, which are well-suited for drug and gene delivery. Furthermore, we investigated the application of a lipid-POx conjugate for the formulation and delivery of mRNA-loaded lipid nanoparticles for immunization against the SARS-COV-2 virus, underscoring the value of POx as a biocompatible polymer platform.
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Affiliation(s)
- Joachim F R Van Guyse
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Saed Abbasi
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Kazuko Toh
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Zlata Nagorna
- Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Junjie Li
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan
| | - Anjaneyulu Dirisala
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Sabina Quader
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
| | - Satoshi Uchida
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
- Department of Medical, Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 606-0823, Kyoto, Japan
- Department of Advanced Nanomedical Engineering, Medical Research Institute, Tokyo Medical and Dental University (TMDU), 113-8510, Tokyo, Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, 210-0821, Kawasaki, Japan
- Present Adresses: S. A., Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, 21231, Baltimore, MD, USA
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Hanaee-Ahvaz H, Cserjan-Puschmann M, Mayer F, Tauer C, Albrecht B, Furtmüller PG, Wiltschi B, Hahn R, Striedner G. Antibody fragments functionalized with non-canonical amino acids preserving structure and functionality - A door opener for new biological and therapeutic applications. Heliyon 2023; 9:e22463. [PMID: 38046162 PMCID: PMC10686840 DOI: 10.1016/j.heliyon.2023.e22463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 12/05/2023] Open
Abstract
Functionalization of proteins by incorporating reactive non-canonical amino acids (ncAAs) has been widely applied for numerous biological and therapeutic applications. The requirement not to lose the intrinsic properties of these proteins is often underestimated and not considered. Main purpose of this study was to answer the question whether functionalization via residue-specific incorporation of the ncAA N6-[(2-Azidoethoxy) carbonyl]-l-lysine (Azk) influences the properties of the anti-tumor-necrosis-factor-α-Fab (FTN2). Therefore, FTN2Azk variants with different Azk incorporation sites were designed and amber codon suppression was used for production. The functionalized FTN2Azk variants were efficiently produced in fed-batch like μ-bioreactor cultivations in the periplasm of E. coli displaying correct structure and antigen binding affinities comparable to those of wild-type FTN2. Our FTN2Azk variants with reactive handles for diverse conjugates enable tracking of recombinant protein in the production cell, pharmacological studies and translation into new pharmaceutical applications.
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Affiliation(s)
- Hana Hanaee-Ahvaz
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Monika Cserjan-Puschmann
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Florian Mayer
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Christopher Tauer
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Bernd Albrecht
- Biopharma Austria, Process Science, Boehringer Ingelheim Regional Center Vienna GmbH & Co KG, Dr.-Boehringer-Gasse 5-11, A-1121, Vienna, Austria
| | - Paul G. Furtmüller
- University of Natural Resources and Life Sciences, Vienna, Department of Chemistry, Institute of Biochemistry, Muthgasse 18, 1190, Vienna, Austria
| | - Birgit Wiltschi
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Rainer Hahn
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
| | - Gerald Striedner
- Christian Doppler Laboratory for Production of Next-Level Biopharmaceuticals in E. coli, University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Bioprocess Science and Engineering, Muthgasse 18, 1190, Vienna, Austria
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Lahiri P, Martin MS, Lino BR, Scheck RA, Van Deventer JA. Dual Noncanonical Amino Acid Incorporation Enabling Chemoselective Protein Modification at Two Distinct Sites in Yeast. Biochemistry 2023; 62:2098-2114. [PMID: 37377426 PMCID: PMC11146674 DOI: 10.1021/acs.biochem.2c00711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Incorporation of more than one noncanonical amino acid (ncAA) within a single protein endows the resulting construct with multiple useful features such as augmented molecular recognition or covalent cross-linking capabilities. Herein, for the first time, we demonstrate the incorporation of two chemically distinct ncAAs into proteins biosynthesized in Saccharomyces cerevisiae. To complement ncAA incorporation in response to the amber (TAG) stop codon in yeast, we evaluated opal (TGA) stop codon suppression using three distinct orthogonal translation systems. We observed selective TGA readthrough without detectable cross-reactivity from host translation components. Readthrough efficiency at TGA was modulated by factors including the local nucleotide environment, gene deletions related to the translation process, and the identity of the suppressor tRNA. These observations facilitated systematic investigation of dual ncAA incorporation in both intracellular and yeast-displayed protein constructs, where we observed efficiencies up to 6% of wild-type protein controls. The successful display of doubly substituted proteins enabled the exploration of two critical applications on the yeast surface─(A) antigen binding functionality and (B) chemoselective modification with two distinct chemical probes through sequential application of two bioorthogonal click chemistry reactions. Lastly, by utilizing a soluble form of a doubly substituted construct, we validated the dual incorporation system using mass spectrometry and demonstrated the feasibility of conducting selective labeling of the two ncAAs sequentially using a "single-pot" approach. Overall, our work facilitates the addition of a 22nd amino acid to the genetic code of yeast and expands the scope of applications of ncAAs for basic biological research and drug discovery.
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Affiliation(s)
- Priyanka Lahiri
- Chemical and Biological Engineering Department, Tufts University, Medford, MA 02155, USA
| | - Meghan S. Martin
- Chemistry Department, Tufts University, Medford, Massachusetts 02155, USA
| | - Briana R. Lino
- Chemical and Biological Engineering Department, Tufts University, Medford, MA 02155, USA
| | - Rebecca A. Scheck
- Chemistry Department, Tufts University, Medford, Massachusetts 02155, USA
| | - James A. Van Deventer
- Chemical and Biological Engineering Department, Tufts University, Medford, MA 02155, USA
- Biomedical Engineering Department, Tufts University, Medford, Massachusetts 02155, USA
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Calix[4]arene Polyamine Triazoles: Synthesis, Aggregation and DNA Binding. Int J Mol Sci 2022; 23:ijms232314889. [PMID: 36499212 PMCID: PMC9738031 DOI: 10.3390/ijms232314889] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/20/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Artificial gene delivery systems are in great demand from both scientific and practical biomedical points of view. In this paper, we present the synthesis of a new click chemistry calix[4]arene precursor with free lower rim and new water-soluble calixarene triazoles with 12 amino-groups on the upper rim (one with free phenol hydroxyl groups and two another containing four butyl or tetradecyl fragments). Aggregation in the series of amino-triazole calixarenes of different lipophilicity (calixarene with free phenol hydroxyl groups or butyl and tetradecyl fragments on the lower rim) was studied using dynamic light scattering and fluorescent pyrene probe. It was found that calix[4]arene with a free lower rim, like alkyl-substituted butyl calix[4]arene, forms stable submicron aggregates 150-200 nm in size, while the more lipophilic tetradecyl -substituted calix[4]arene forms micellar aggregates19 nm in size. Using UV-Vis spectroscopy, fluorimetry and CD, it was shown that amino-triazole calix[4]arenes bind to calf thymus DNA by classical intercalation. According to DLS and TEM data, all studied macrocycles cause significant DNA compaction, forming stable nanoparticles 50-20 nm in size. Among all studied calix[4]arenes the most lipophilic tetradecyl one proved to be the best for both binding and compaction of DNA.
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Le Jeune M, Secret E, Trichet M, Michel A, Ravault D, Illien F, Siaugue JM, Sagan S, Burlina F, Ménager C. Conjugation of Oligo-His Peptides to Magnetic γ-Fe 2O 3@SiO 2 Core-Shell Nanoparticles Promotes Their Access to the Cytosol. ACS APPLIED MATERIALS & INTERFACES 2022; 14:15021-15034. [PMID: 35319860 DOI: 10.1021/acsami.2c01346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The endosomal entrapment of functional nanoparticles is a severe limitation to their use for biomedical applications. In the case of magnetic nanoparticles (MNPs), this entrapment leads to poor heating efficiency for magnetic hyperthermia and suppresses the possibility to manipulate them in the cytosol. Current strategies to limit their entrapment include functionalization with cell-penetrating peptides to promote translocation directly across the cell membrane or facilitate endosomal escape. However, these strategies suffer from the potential release of free peptides in the cell, and to the best of our knowledge, there is currently a lack of effective methods for the cytosolic delivery of MNPs after incubation with cells. Herein, we report the conjugation of fluorescently labeled cationic peptides to γ-Fe2O3@SiO2 core-shell nanoparticles by click chemistry to improve MNP access to the cytosol. We compare the effect of Arg9 and His4 peptides. On the one hand, Arg9 is a classical cell-penetrating peptide able to enter cells by direct translocation, and on the other hand, it has been demonstrated that sequences rich in histidine residues can promote endosomal escape, possibly by the proton sponge effect. The methodology developed here allows a high colocalization of the peptides and core-shell nanoparticles in cells and confirms that grafting peptides rich in histidine residues onto nanoparticles promotes NPs' access to the cytosol. Endosomal escape was confirmed by a calcein leakage assay and by ultrastructural analysis in transmission electron microscopy. No toxicity was observed for the peptide-nanoparticles conjugates. We also show that our conjugation strategy is compatible with the addition of multiple substrates and can thus be used for the delivery of cytoplasm-targeted therapeutics.
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Affiliation(s)
- Mathilde Le Jeune
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, 75005 Paris, France
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Emilie Secret
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, 75005 Paris, France
| | - Michaël Trichet
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Service de Microscopie Électronique (IBPS-SME), 9 quai Saint Bernard, F-75005 Paris, France
| | - Aude Michel
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, 75005 Paris, France
| | - Delphine Ravault
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Françoise Illien
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Jean-Michel Siaugue
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, 75005 Paris, France
| | - Sandrine Sagan
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Fabienne Burlina
- Sorbonne Université, École Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Christine Ménager
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, 75005 Paris, France
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Velázquez A, Grande D, Elizalde LE. Evaluation of halogen chain-end functionality in 2-bromo-2-methylpropanoate esters of poly(oxyalkylene) polymers by MALDI-TOF spectroscopy. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03391-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sun Y, Perez AF, Cardoza IL, Baluyot-Reyes N, Ba Y. Mucoadhesive and Rheological Studies on the Co-Hydrogel Systems of Poly(Ethylene Glycol) Copolymers with Fluoroalkyl and Poly(Acrylic Acid). Polymers (Basel) 2021; 13:polym13121956. [PMID: 34204627 PMCID: PMC8231137 DOI: 10.3390/polym13121956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/10/2021] [Accepted: 06/10/2021] [Indexed: 01/18/2023] Open
Abstract
A self-assembled co-hydrogel system with sol-gel two-phase coexistence and mucoadhesive properties was developed based on the combined properties of fluoroalkyl double-ended poly(ethylene glycol) (Rf-PEG-Rf) and poly(acrylic acid) (PAA), respectively. We have synthesized an Rf-PEG-g-PAA (where g denotes grafted) copolymer and integrated it into the Rf-PEG-Rf physically cross-linked micellar network to form a co-hydrogel system. Tensile strengths between the co-hydrogel surfaces and two different sets of mucosal surfaces were acquired. One mucosal surface was made of porcine stomach mucin Type II, while the other one is a pig small intestine. The experimental results show that the largest maximum detachment stresses (MDSs) were obtained when the Rf-PEG-g-PAA’s weight percent in the dehydrated polymer mixture is ~15%. Tensile experiments also found that MDSs are greater in acidic conditions (pH = 4–5) (123.3 g/cm2 for the artificial mucus, and 43.0 g/cm2 for pig small intestine) and basic conditions (pH = 10.6) (126.9 g/cm2, and 44.6 g.cm2, respectively) than in neutral pH (45.4 g/cm2, and 30.7 g.cm2, respectively). Results of the rheological analyses using shear strain amplitude sweep and frequency sweep reveal that the Rf-PEG-g-PAA was physically integrated into the Rf-PEG-Rf micellar network, and the co-hydrogels remain physically cross-linked in three-dimensional micellar networks with long-term physical dispersion stability. Therefore, the co-hydrogel system is promising for drug delivery applications on mucosal surfaces.
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Affiliation(s)
| | | | | | | | - Yong Ba
- Correspondence: ; Tel.: +1-323-343-2360
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Lai SC, You RI, Chen TT, Chang Y, Liu CZ, Chen HP, Wu C. Rapid Identification of Commercial Frankincense Products by MALDI-TOF Mass Spectrometry. Comb Chem High Throughput Screen 2021; 25:895-905. [PMID: 33645476 DOI: 10.2174/1386207324666210301092111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/01/2021] [Accepted: 02/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Frankincense is a resin secreted by the Boswellia tree. It is used in perfumery, aromatherapy, skincare, and traditional Chinese medicine. However, all Boswellia species are under threat owing to habitat loss and overexploitation. As a result, the market is getting flooded with counterfeit frankincense products. OBJECTIVE This study aims to establish a high-throughput method to screen and identify the authenticity of commercial frankincense products. We report, for the first time, a matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS)-based method for rapid and high-throughput screening of frankincense samples. METHODS MALDI-TOF MS, HPLC, thin-layer chromatography (TLC), and in vitro anti-inflammatory activity assay were used to examine the frankincense samples. RESULTS Well-resolved peaks of frankincense triterpenoids in the spectra were observed in the crude extract of commercial samples, including α-boswellic acids (αBAs), β-boswellic acids (βBAs), 11-keto-β-boswellic acids (KBAs), acetyl-11-keto-β-boswellic acids (AKBAs), and their esters. These compounds can be used as indicators for determining the authenticity of frankincense. CONCLUSION Unlike LC-MS, which is a time-consuming and expensive method, and TLC, which requires a reference sample, our inexpensive, rapid high-throughput identification method based on MALDI-TOF MS is ideal for large-scale screening of frankincense samples sold in the market.
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Affiliation(s)
- Shang-Chih Lai
- School of Post-Baccalaureate Chinese Medicine,Tzu Chi University, Hualien 97004. Taiwan
| | - Ren-In You
- Department of Laboratory Medicine and Biotechnology, Tzu Chi University, Hualien 97004. Taiwan
| | - Tz-Ting Chen
- Department of Chemistry, Tamkang University, Tamsui, New Taipei City 25137. Taiwan
| | - Yu Chang
- Department of Biochemistry, Tzu Chi University, Hualien 97004. Taiwan
| | - Chao-Zong Liu
- Department of Pharmacology, Tzu Chi University, Hualien 97004. Taiwan
| | - Hao-Ping Chen
- Department of Biochemistry, Tzu Chi University, Hualien 97004. Taiwan
| | - Chunhung Wu
- Department of Chemistry, Tamkang University, Tamsui, New Taipei City 25137. Taiwan
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Sodium 3-azidopropyldialkoxysilanolate - A versatile route towards new functional 1,2,3–triazole based hyperbranched polyorganoalkoxysiloxanes. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104648] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Haque FM, Grayson SM. The synthesis, properties and potential applications of cyclic polymers. Nat Chem 2020; 12:433-444. [DOI: 10.1038/s41557-020-0440-5] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 02/14/2020] [Indexed: 11/09/2022]
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Podevyn A, Arys K, de la Rosa VR, Glassner M, Hoogenboom R. End-group functionalization of poly(2-oxazoline)s using methyl bromoacetate as initiator followed by direct amidation. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kang G, Sun L, Liu Y, Meng C, Ma W, Wang B, Ma L, Yu C, Wei H. Micelles with Cyclic Poly(ε-caprolactone) Moieties: Greater Stability, Larger Drug Loading Capacity, and Slower Degradation Property for Controlled Drug Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12509-12517. [PMID: 31487459 DOI: 10.1021/acs.langmuir.9b02346] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymer topology exerts a significant effect on its properties and performance for potential applications. Cyclic topology and its derived structures have been recently shown to outperform conventional linear analogues for drug delivery applications. However, an amphiphilic tadpole-shaped copolymer consisting of a cylic hydrophobic moiety has rarely been explored. For this purpose, a tadpole-shaped amphiphilic diblock copolymer of poly(ethylene oxide)-b-(cyclic poly(ε-caprolactone)) (mPEG-b-cPCL) was synthesized successfully via ring-opening polymerization (ROP) of ε-CL using a mPEG-based macroinitiator with both a hydroxyl and an azide termini and subsequent intrachain Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAc) click cyclization. A comparison study on the self-assembly behaviors, in vitro drug loading and drug release profiles, and degradation properties of the resulting mPEG-b-cPCL (C) with those of the linear counterpart (mPEG-b-PCL, L) revealed that mPEG-b-cPCL micelles are a better formulation than the micelles formed by the linear counterparts in terms of micelle stability, drug loading capacity, and the degradation property. Interestingly, compared to the single degradation of L, C exhibited a slower two-stage degradation process including the topological change from tadpole shape to linear conformation and the subsequent degradation of a linear polymer. This study therefore uncovered the topological effect of a hydrophobic moiety on the properties of the self-assembled micelles and developed a complementary alternative to enhance the micelle stability by introducing a cyclic hydrophobic segment.
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Affiliation(s)
- Guiying Kang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Lu Sun
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Yuping Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Chao Meng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Wei Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Baoyan Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Liwei Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
| | - Cuiyun Yu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study and Department of Pharmacy and Pharmacology , University of South China , Hengyang 421001 , China
| | - Hua Wei
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study and Department of Pharmacy and Pharmacology , University of South China , Hengyang 421001 , China
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Sun H, Haque FM, Zhang Y, Commisso A, Mohamed MA, Tsianou M, Cui H, Grayson SM, Cheng C. Linear-Dendritic Alternating Copolymers. Angew Chem Int Ed Engl 2019; 58:10572-10576. [PMID: 31141618 DOI: 10.1002/anie.201903402] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Indexed: 01/15/2023]
Abstract
Herein, the design, synthesis, and characterization of an unprecedented copolymer consisting of alternating linear and dendritic segments is described. First, a 4th-generation Hawker-type dendron with two azide groups was synthesized, followed by a step-growth azide-alkyne "click" reaction between the 4th-generation diazido dendron and poly(ethylene glycol) diacetylene to create the target polymers. Unequal reactivity of the functional groups was observed in the step-growth polymerization. The resulting copolymers, with alternating hydrophilic linear and hydrophobic dendritic segments, can spontaneously associate into a unique type of microphase-segregated nanorods in water.
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Affiliation(s)
- Haotian Sun
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Farihah M Haque
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Yi Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Alex Commisso
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Mohamed Alaa Mohamed
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.,Department of Chemistry, Mansoura University, Mansoura, 35516, Egypt
| | - Marina Tsianou
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Honggang Cui
- Department of Chemical & Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Scott M Grayson
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
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14
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Sun H, Haque FM, Zhang Y, Commisso A, Mohamed MA, Tsianou M, Cui H, Grayson SM, Cheng C. Linear‐Dendritic Alternating Copolymers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Haotian Sun
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
| | - Farihah M. Haque
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Yi Zhang
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
| | - Alex Commisso
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
| | - Mohamed Alaa Mohamed
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
- Department of Chemistry Mansoura University Mansoura 35516 Egypt
| | - Marina Tsianou
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
| | - Honggang Cui
- Department of Chemical & Biomolecular Engineering The Johns Hopkins University Baltimore MD 21218 USA
| | - Scott M. Grayson
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Chong Cheng
- Department of Chemical and Biological Engineering University at Buffalo, The State University of New York Buffalo NY 14260 USA
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15
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Complementarity of Matrix- and Nanostructure-Assisted Laser Desorption/Ionization Approaches. NANOMATERIALS 2019; 9:nano9020260. [PMID: 30769830 PMCID: PMC6410089 DOI: 10.3390/nano9020260] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/08/2019] [Accepted: 02/11/2019] [Indexed: 01/06/2023]
Abstract
In recent years, matrix-assisted laser desorption/ionization (MALDI) has become the main tool for the study of biological macromolecules, such as protein nano-machines, especially in the determination of their molecular masses, structure, and post-translational modifications. A key role in the classical process of desorption and ionization of the sample is played by a matrix, usually a low-molecular weight weak organic acid. Unfortunately, the interpretation of mass spectra in the mass range of below m/z 500 is difficult, and hence the analysis of low molecular weight compounds in a matrix-assisted system is an analytical challenge. Replacing the classical matrix with nanomaterials, e.g., silver nanoparticles, allows improvement of the selectivity and sensitivity of spectrometric measurement of biologically important small molecules. Nowadays, the nanostructure-assisted laser desorption/ionization (NALDI) approach complements the classic MALDI in the field of modern bioanalytics. In particular, the aim of this work is to review the recent advances in MALDI and NALDI approaches.
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16
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Chinnusamy T. Recyclable MeOPEG-clicked TEMPO catalyst for one-pot aerobic double dehydrogenation of alcohols to nitriles. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2018.08.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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17
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Zhu Y, Liu X, Zhang Y, Wang Z, Lasanajak Y, Song X. Anthranilic Acid as a Versatile Fluorescent Tag and Linker for Functional Glycomics. Bioconjug Chem 2018; 29:3847-3855. [PMID: 30380836 DOI: 10.1021/acs.bioconjchem.8b00678] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The advancement of glycoscience is critically dependent on the access to a large number of glycans for their functional study. Naturally occurring glycans are considered a viable source for diverse and biologically relevant glycan libraries. A mixture of free reducing glycans released from natural sources can be fluorescently tagged and separated by chromatography to produce a natural glycan library. Anthranilic acid (AA) has been widely used to fluorescently tag reducing glycans for HPLC or LC/MS analysis. However, AA conjugated glycans are not efficiently immobilized on microarray slides due to the lack of a primary alkylamine functional group. In this study, we have developed simple and efficient chemistry for bioconjugation and further functionalization of glycan-AA conjugates. This new approach enables quick preparation of glycan microarrays and neoglycoproteins from glycan-AA conjugates, which can be separated by weak anion exchange (WAX) and C18 reversed-phase HPLC.
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Affiliation(s)
- Yuyang Zhu
- Department of Biochemistry, Emory Comprehensive Glycomics Core , Emory University School of Medicine , Atlanta , Georgia 30322 , United States
| | - Xueyun Liu
- Department of Biochemistry, Emory Comprehensive Glycomics Core , Emory University School of Medicine , Atlanta , Georgia 30322 , United States
| | - Ying Zhang
- Department of Biochemistry, Emory Comprehensive Glycomics Core , Emory University School of Medicine , Atlanta , Georgia 30322 , United States.,Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science , Northwest University , Xi'an 710069 , P. R. China
| | - Zhongfu Wang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Science , Northwest University , Xi'an 710069 , P. R. China
| | - Yi Lasanajak
- Department of Biochemistry, Emory Comprehensive Glycomics Core , Emory University School of Medicine , Atlanta , Georgia 30322 , United States
| | - Xuezheng Song
- Department of Biochemistry, Emory Comprehensive Glycomics Core , Emory University School of Medicine , Atlanta , Georgia 30322 , United States
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18
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Liu Z, Huang Y, Zhang X, Tu X, Wang M, Ma L, Wang B, He J, Ni P, Wei H. Fabrication of Cyclic Brush Copolymers with Heterogeneous Amphiphilic Polymer Brushes for Controlled Drug Release. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00950] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zhe Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yupeng Huang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiaolong Zhang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiaoyan Tu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Mingqi Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Liwei Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Baoyan Wang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jinlin He
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou 215123, China
| | - Peihong Ni
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou 215123, China
| | - Hua Wei
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
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19
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Li Y, Li T, Xiao LQ, Zhang YF. Novel Synthesis of Down-/Up-Conversion Fluorescent Oligo(2-pyrazoline)s. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Li
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, People’s Republic of China
| | - Tao Li
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, People’s Republic of China
| | - Long-Qiang Xiao
- Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510631, People’s Republic of China
| | - Yue-Fei Zhang
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, People’s Republic of China
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20
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Burilov VA, Fatikhova GA, Dokuchaeva MN, Nugmanov RI, Mironova DA, Dorovatovskii PV, Khrustalev VN, Solovieva SE, Antipin IS. Synthesis of new p-tert-butylcalix[4]arene-based polyammonium triazolyl amphiphiles and their binding with nucleoside phosphates. Beilstein J Org Chem 2018; 14:1980-1993. [PMID: 30202452 PMCID: PMC6122204 DOI: 10.3762/bjoc.14.173] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 07/13/2018] [Indexed: 01/10/2023] Open
Abstract
The synthesis of new calix[4]arenes adopting a cone stereoisomeric form bearing two or four azide fragments on the upper rim and water-soluble triazolyl amphiphilic receptors with two or four polyammonium headgroups via copper-catalyzed azide–alkyne cycloaddition reaction has been performed for the first time. It was found that the synthesized macrocycles form stable aggregates with hydrodynamic diameters between 150–200 nm and electrokinetic potentials about +40 to +60 mV in water solutions. Critical aggregation concentration (CAC) values were measured using a micelle method with pyrene and eosin Y as dye probes. The CAC values of tetraalkyl-substituted macrocycles 12a,b (5 µM for both) are significantly lower than those for dialkyl-substituted macrocycles 10a,b (790 and 160 µM, respectively). Premicellar aggregates of macrocycles 10a,b and 12a,b with the dye eosin Y were used for nucleotides sensing through a dye replacement procedure. It is unusual that disubstituted macrocycles 10a,b bind more effectively a less charged adenosine 5'-diphosphate (ADP) than adenosine 5'-triphosphate (ATP). A simple colorimetric method based on polydiacetylene vesicles decorated with 10b was elaborated for the naked-eye detection of ADP with a detection limit of 0.5 mM.
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Affiliation(s)
- Vladimir A Burilov
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | | | - Mariya N Dokuchaeva
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Ramil I Nugmanov
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Diana A Mironova
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", 1 Ak. Kurchatov Square, Moscow 123182, Russian Federation
| | - Victor N Khrustalev
- National Research Center "Kurchatov Institute", 1 Ak. Kurchatov Square, Moscow 123182, Russian Federation.,Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklay Street, Moscow 117198, Russin Federation
| | - Svetlana E Solovieva
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation.,A. E. Arzubov Institute of Organic & Physical Chemistry, 8 Arzubov Street, Kazan 420088, Russian Federation
| | - Igor S Antipin
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation.,A. E. Arzubov Institute of Organic & Physical Chemistry, 8 Arzubov Street, Kazan 420088, Russian Federation
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21
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Payne ME, Grayson SM. Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) Mass Spectrometry. J Vis Exp 2018. [PMID: 29939185 PMCID: PMC6101691 DOI: 10.3791/57174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
There are many techniques that can be employed in the characterization of synthetic homopolymers, but few provide as useful of information for end group analysis as matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS). This tutorial demonstrates methods for optimization of the sample preparation, spectral acquisition, and data analysis of synthetic polymers using MALDI-TOF MS. Critical parameters during sample preparation include the selection of the matrix, identification of an appropriate cationization salt, and tuning the relative proportions of the matrix, cation, and analyte. The acquisition parameters, such as mode (linear or reflector), polarization (positive or negative), acceleration voltage, and delay time, are also important. Given some knowledge of the chemistry involved to synthesize the polymer and optimizing both the data acquisition parameters and the sample preparation conditions, spectra should be obtained with sufficient resolution and mass accuracy to enable the unambiguous determination of the end groups of most homopolymers (masses below 10,000) in addition to the repeat unit mass and the overall molecular weight distribution. Though demonstrated on a limited set of polymers, these general techniques are applicable to a much wider range of synthetic polymers for determining mass distributions, though end group determination is only possible for homopolymers with narrow dispersity.
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22
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Ochs J, Veloso A, Martínez-Tong DE, Alegria A, Barroso-Bujans F. An Insight into the Anionic Ring-Opening Polymerization with Tetrabutylammonium Azide for the Generation of Pure Cyclic Poly(glycidyl phenyl ether). Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02580] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jordan Ochs
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Donostia International
Physics Center (DIPC), Paseo Manuel Lardizábal 4, San Sebastian 20018, Spain
| | - Antonio Veloso
- POLYMAT,, University of the Basque Country UPV/EHU, Joxe Mari Korta R&D Ctr, Avda. Tolosa-72, San Sebastian 20018, Spain
| | - Daniel E. Martínez-Tong
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Donostia International
Physics Center (DIPC), Paseo Manuel Lardizábal 4, San Sebastian 20018, Spain
| | - Angel Alegria
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Departamento de Física de Materiales, University of the Basque Country (UPV/EHU), Apartado 1072, San Sebastian 20080, Spain
| | - Fabienne Barroso-Bujans
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Donostia International
Physics Center (DIPC), Paseo Manuel Lardizábal 4, San Sebastian 20018, Spain
- IKERBASQUE - Basque
Foundation for Science, María Díaz de Haro 3, E-48013 Bilbao, Spain
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23
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Zaldua N, Liénard R, Josse T, Zubitur M, Mugica A, Iturrospe A, Arbe A, De Winter J, Coulembier O, Müller AJ. Influence of Chain Topology (Cyclic versus Linear) on the Nucleation and Isothermal Crystallization of Poly(l-lactide) and Poly(d-lactide). Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02638] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | | | | | | | - Amaia Iturrospe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM) (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Arantxa Arbe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM) (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
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24
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Kelly GM, Haque FM, Grayson SM, Albert JNL. Suppression of Melt-Induced Dewetting in Cyclic Poly(ε-caprolactone) Thin Films. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02200] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giovanni M. Kelly
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Farihah M. Haque
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Scott M. Grayson
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Julie N. L. Albert
- Department
of Chemical and Biomolecular Engineering and ‡Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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25
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Zamecnik CR, Lowe MM, Patterson DM, Rosenblum MD, Desai TA. Injectable Polymeric Cytokine-Binding Nanowires Are Effective Tissue-Specific Immunomodulators. ACS NANO 2017; 11:11433-11440. [PMID: 29124929 PMCID: PMC5709211 DOI: 10.1021/acsnano.7b06094] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Injectable nanomaterials that interact with the host immune system without surgical intervention present spatially anchored complements to cell transplantation and could offer improved pharmacokinetics compared to systemic cytokine therapy. Here we demonstrate fabrication of high aspect ratio polycaprolactone nanowires coupled with cytokine-binding antibodies that assemble into porous matrices when injected into the subcutaneous space. These structures are fabricated using a nanotemplating technique that allows for tunability of particle dimensions and utilize a straightforward maleimide conjugation chemistry to allow site-specific coupling to proteins. Nanowires are well tolerated in vivo and incite minimal inflammatory infiltrate. Nanowires conjugated with antibodies were designed to capture and potentiate endogenous interleukin-2 (IL-2), an important leukocyte activating cytokine. Together these nanowire-antibody matrices were capable of localizing endogenous IL-2 in the skin and activated targeted specific natural killer and T cell subsets, demonstrating both tissue- and cell-specific immune activation. These self-assembling nanowire matrices show promise as scaffolds to present engineered, local receptor-ligand interactions for cytokine-mediated disease.
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Affiliation(s)
- Colin R. Zamecnik
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
- UC Berkeley–UCSF Graduate Program in Bioengineering, University of California San Francisco, Mission Bay Campus, San Francisco, California 94158, United States
| | - Margaret M. Lowe
- Department of Dermatology, University of California San Francisco, San Francisco, California 94143, United States
| | - David M. Patterson
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94143, United States
| | - Michael D. Rosenblum
- Department of Dermatology, University of California San Francisco, San Francisco, California 94143, United States
| | - Tejal A. Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
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26
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Pokhrel N, Origanti S, Davenport EP, Gandhi D, Kaniecki K, Mehl RA, Greene EC, Dockendorff C, Antony E. Monitoring Replication Protein A (RPA) dynamics in homologous recombination through site-specific incorporation of non-canonical amino acids. Nucleic Acids Res 2017; 45:9413-9426. [PMID: 28934470 PMCID: PMC5766198 DOI: 10.1093/nar/gkx598] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/09/2017] [Indexed: 12/23/2022] Open
Abstract
An essential coordinator of all DNA metabolic processes is Replication Protein A (RPA). RPA orchestrates these processes by binding to single-stranded DNA (ssDNA) and interacting with several other DNA binding proteins. Determining the real-time kinetics of single players such as RPA in the presence of multiple DNA processors to better understand the associated mechanistic events is technically challenging. To overcome this hurdle, we utilized non-canonical amino acids and bio-orthogonal chemistry to site-specifically incorporate a chemical fluorophore onto a single subunit of heterotrimeric RPA. Upon binding to ssDNA, this fluorescent RPA (RPAf) generates a quantifiable change in fluorescence, thus serving as a reporter of its dynamics on DNA in the presence of multiple other DNA binding proteins. Using RPAf, we describe the kinetics of facilitated self-exchange and exchange by Rad51 and mediator proteins during various stages in homologous recombination. RPAf is widely applicable to investigate its mechanism of action in processes such as DNA replication, repair and telomere maintenance.
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Affiliation(s)
- Nilisha Pokhrel
- Department of Biological Sciences, Marquette University, Milwaukee, WI 53201, USA
| | - Sofia Origanti
- Department of Biological Sciences, Marquette University, Milwaukee, WI 53201, USA
| | | | - Disha Gandhi
- Department of Chemistry, Marquette University, Milwaukee, WI 53201, USA
| | - Kyle Kaniecki
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA.,Department of Genetics and Development, Columbia University, New York, NY 10032, USA
| | - Ryan A Mehl
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA
| | - Eric C Greene
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA
| | - Chris Dockendorff
- Department of Chemistry, Marquette University, Milwaukee, WI 53201, USA
| | - Edwin Antony
- Department of Biological Sciences, Marquette University, Milwaukee, WI 53201, USA
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27
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Jung JH, Kumar Mohanty A, Ye J, Lee T, Ahn J, Lim YG, Chang T, Paik HJ. Covalent fixed multicyclic polystyrene conformers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28869] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ji-Hye Jung
- Department of Polymer Science and Engineering; Pusan National University; Busan 46241 Korea
- The 4th R&D Institute-2, Agency for Defense Development; Daejeon 34186 Korea
| | - Aruna Kumar Mohanty
- Department of Polymer Science and Engineering; Pusan National University; Busan 46241 Korea
| | - Jihwa Ye
- Department of Polymer Science and Engineering; Pusan National University; Busan 46241 Korea
| | - Taeheon Lee
- Department of Polymer Science and Engineering; Pusan National University; Busan 46241 Korea
| | - Junyoung Ahn
- Division of Advanced Materials Science and Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Yeong-Gweon Lim
- The 4th R&D Institute-2, Agency for Defense Development; Daejeon 34186 Korea
| | - Taihyun Chang
- Division of Advanced Materials Science and Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Korea
| | - Hyun-Jong Paik
- Department of Polymer Science and Engineering; Pusan National University; Busan 46241 Korea
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28
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Fan H, Li Y, Yang J, Ye X. Effect of Hydrophobic Chain Length on the Stability and Guest Exchange Behavior of Shell-Sheddable Micelles Formed by Disulfide-Linked Diblock Copolymers. J Phys Chem B 2017; 121:9708-9717. [PMID: 28925709 DOI: 10.1021/acs.jpcb.7b06165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reduction-responsive micelles hold enormous promise for application as drug carriers due to the fast drug release triggered by reducing conditions and high anticancer activity. However, the effect of hydrophobic chain length on the stability and guest exchange of reduction-responsive micelles, especially for the micelles formed by diblock copolymers containing single disulfide group, is not fully understood. Here, shell-sheddable micelles formed by a series of disulfide-linked copolymer poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-SS-PCL) containing the same chain length of PEG but different chain lengths of hydrophobic block PCL were prepared and well characterized. The influence of the chain length of hydrophobic PCL block on the stability and guest exchange of PEG-SS-PCL micelles was studied by the use of both dynamic laser light scattering (DLS) and fluorescence resonance energy transfer (FRET). The results show that longer PCL chains lead to a slower aggregation rate and guest exchange of micelles in the aqueous solutions containing 10 mM dithiothreitol (DTT). The cell uptake of the shell-sheddable PEG-SS-PCL micelles in vitro shows that the amount of internalization of dyes loaded in PEG-SS-PCL micelles increases with the chain length of hydrophobic PCL block investigated by flow cytometric analysis and confocal fluorescence microscopy.
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Affiliation(s)
- Haiyan Fan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yixia Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Jinxian Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Xiaodong Ye
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
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29
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Thompson JW, Griffin ME, Hsieh-Wilson LC. Methods for the Detection, Study, and Dynamic Profiling of O-GlcNAc Glycosylation. Methods Enzymol 2017; 598:101-135. [PMID: 29306432 PMCID: PMC5886303 DOI: 10.1016/bs.mie.2017.06.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The addition of O-linked β-N-acetylglucosamine (O-GlcNAc) to serine/threonine residues of proteins is a ubiquitous posttranslational modification found in all multicellular organisms. Like phosphorylation, O-GlcNAc glycosylation (O-GlcNAcylation) is inducible and regulates a myriad of physiological and pathological processes. However, understanding the diverse functions of O-GlcNAcylation is often challenging due to the difficulty of detecting and quantifying the modification. Thus, robust methods to study O-GlcNAcylation are essential to elucidate its key roles in the regulation of individual proteins, complex cellular processes, and disease. In this chapter, we describe a set of chemoenzymatic labeling methods to (1) detect O-GlcNAcylation on proteins of interest, (2) monitor changes in both the total levels of O-GlcNAcylation and its stoichiometry on proteins of interest, and (3) enable mapping of O-GlcNAc to specific serine/threonine residues within proteins to facilitate functional studies. First, we outline a procedure for the expression and purification of a multiuse mutant galactosyltransferase enzyme (Y289L GalT). We then describe the use of Y289L GalT to modify O-GlcNAc residues with a functional handle, N-azidoacetylgalactosamine (GalNAz). Finally, we discuss several applications of the copper-catalyzed azide-alkyne cycloaddition "click" reaction to attach various alkyne-containing chemical probes to GalNAz and demonstrate how this functionalization of O-GlcNAc-modified proteins can be used to realize (1)-(3) above. Overall, these methods, which utilize commercially available reagents and standard protein analytical tools, will serve to advance our understanding of the diverse and important functions of O-GlcNAcylation.
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Affiliation(s)
- John W Thompson
- California Institute of Technology, Pasadena, CA, United States
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30
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Schroot R, Schubert US, Jäger M. Poly(N-alkyl-3,6-carbazole)s via Suzuki–Miyaura Polymerization: From Macrocyclization toward End Functionalization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Robert Schroot
- Laboratory
of Organic and Macromolecular Chemistry (IOMC) and ‡Center for Energy and Environmental
Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic and Macromolecular Chemistry (IOMC) and ‡Center for Energy and Environmental
Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Michael Jäger
- Laboratory
of Organic and Macromolecular Chemistry (IOMC) and ‡Center for Energy and Environmental
Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, 07743 Jena, Germany
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31
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Borke T, Korpi A, Pooch F, Tenhu H, Hietala S. Poly(glyceryl glycerol): A multi-functional hydrophilic polymer for labeling with boronic acids. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tina Borke
- Laboratory of Polymer Chemistry, Department of Chemistry; University of Helsinki; P.O. Box 55 Helsinki 00014 Finland
| | - Antti Korpi
- Laboratory of Polymer Chemistry, Department of Chemistry; University of Helsinki; P.O. Box 55 Helsinki 00014 Finland
| | - Fabian Pooch
- Laboratory of Polymer Chemistry, Department of Chemistry; University of Helsinki; P.O. Box 55 Helsinki 00014 Finland
| | - Heikki Tenhu
- Laboratory of Polymer Chemistry, Department of Chemistry; University of Helsinki; P.O. Box 55 Helsinki 00014 Finland
| | - Sami Hietala
- Laboratory of Polymer Chemistry, Department of Chemistry; University of Helsinki; P.O. Box 55 Helsinki 00014 Finland
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32
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Anastasaki A, Willenbacher J, Fleischmann C, Gutekunst WR, Hawker CJ. End group modification of poly(acrylates) obtained via ATRP: a user guide. Polym Chem 2017. [DOI: 10.1039/c6py01993e] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The versatile and high yielding end-functionalization with a varienty of functional groups is presented for poly(acrylates) obtained by ATRP.
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Affiliation(s)
- Athina Anastasaki
- Materials Research Laboratory
- University of California
- Santa Barbara
- USA
| | | | | | - Will R. Gutekunst
- Materials Research Laboratory
- University of California
- Santa Barbara
- USA
- School of Chemistry and Biochemistry
| | - Craig J. Hawker
- Materials Research Laboratory
- University of California
- Santa Barbara
- USA
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33
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Li Y, Chen C, Li F, Liao L, Liu L. Mechanistic studies of the copolymerization between ethyl diazoacetate and cinnamaldehyde. Polym Chem 2017. [DOI: 10.1039/c6py02126c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ndiazo,Cω-diradical species and their chain propagation mechanism during copolymerization.
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Affiliation(s)
- Yan Li
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Cheng Chen
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Feifei Li
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Liqiong Liao
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Lijian Liu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
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34
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Yang ST, Lim SI, Kiessling V, Kwon I, Tamm LK. Site-specific fluorescent labeling to visualize membrane translocation of a myristoyl switch protein. Sci Rep 2016; 6:32866. [PMID: 27605302 PMCID: PMC5015116 DOI: 10.1038/srep32866] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/16/2016] [Indexed: 12/20/2022] Open
Abstract
Fluorescence approaches have been widely used for elucidating the dynamics of protein-membrane interactions in cells and model systems. However, non-specific multi-site fluorescent labeling often results in a loss of native structure and function, and single cysteine labeling is not feasible when native cysteines are required to support a protein's folding or catalytic activity. Here, we develop a method using genetic incorporation of non-natural amino acids and bio-orthogonal chemistry to site-specifically label with a single fluorescent small molecule or protein the myristoyl-switch protein recoverin, which is involved in rhodopsin-mediated signaling in mammalian visual sensory neurons. We demonstrate reversible Ca(2+)-responsive translocation of labeled recoverin to membranes and show that recoverin favors membranes with negative curvature and high lipid fluidity in complex heterogeneous membranes, which confers spatio-temporal control over down-stream signaling events. The site-specific orthogonal labeling technique is promising for structural, dynamical, and functional studies of many lipid-anchored membrane protein switches.
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Affiliation(s)
- Sung-Tae Yang
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, VA 22908, USA
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Sung In Lim
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22904, USA
| | - Volker Kiessling
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, VA 22908, USA
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Inchan Kwon
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22904, USA
- School of Materials Science and Engineering, and Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Lukas K. Tamm
- Center for Membrane and Cell Physiology, University of Virginia, Charlottesville, VA 22908, USA
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
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35
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Gao L, Oh J, Chang T, Chen D, Li X, Yang X, Tu Y, Zhu X, Li CY. A nearly quantitative synthetic approach towards monocyclic polystyrenes and the solvent, concentration and molecular weight effect on cyclic yield. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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36
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Elupula R, Oh J, Haque FM, Chang T, Grayson SM. Determining the Origins of Impurities during Azide–Alkyne Click Cyclization of Polystyrene. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00968] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ravinder Elupula
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Joongsuk Oh
- Department
of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Farihah M. Haque
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Taihyun Chang
- Department
of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Scott M. Grayson
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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37
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Lee T, Oh J, Jeong J, Jung H, Huh J, Chang T, Paik HJ. Figure-Eight-Shaped and Cage-Shaped Cyclic Polystyrenes. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00093] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Taeheon Lee
- Department of Polymer Science and Engineering, Pusan National University, Busan, 46241, Korea
| | - Joongsuk Oh
- Department of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Jonghwa Jeong
- Department of Polymer Science and Engineering, Pusan National University, Busan, 46241, Korea
| | - Haeji Jung
- Department of Polymer Science and Engineering, Pusan National University, Busan, 46241, Korea
| | - June Huh
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, Korea
| | - Taihyun Chang
- Department of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Hyun-jong Paik
- Department of Polymer Science and Engineering, Pusan National University, Busan, 46241, Korea
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38
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Li Y, Chen C, Wu J, Jia X, Lu Y, Chen F, Liu L. Copolymerization of alkyl diazoacetates with α,β-unsaturated aldehydes: synthesis and application. Polym Chem 2016. [DOI: 10.1039/c6py01666a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copolymerization of alkyl diazoacetates with α,β-unsaturated aldehydes and the product's fluorescence property.
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Affiliation(s)
- Yan Li
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Cheng Chen
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Jinlong Wu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Xiangxiang Jia
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Yufan Lu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Fangjuan Chen
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Lijian Liu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
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39
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Gavrilov M, Jia Z, Percec V, Monteiro MJ. Quantitative end-group functionalization of PNIPAM from aqueous SET-LRP via in situ reduction of Cu(ii) with NaBH4. Polym Chem 2016. [DOI: 10.1039/c6py00968a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Rapid in situ azidation and CuAAC ‘click’ reaction demonstrating very high chain-end functionality.
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Affiliation(s)
- Mikhail Gavrilov
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
| | - Zhongfan Jia
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories
- Department of Chemistry
- University of Pennsylvania
- Philadelphia
- USA
| | - Michael J. Monteiro
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- St Lucia
- Australia
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40
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Yang S, Kim Y, Kim HC, Siddique AB, Youn G, Kim HJ, Park HJ, Lee JY, Kim S, Kim J. Azide-based heterobifunctional poly(ethylene oxide)s: NaN3-initiated “living” polymerization of ethylene oxide and chain end functionalizations. Polym Chem 2016. [DOI: 10.1039/c5py01444a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Sodium azide (NaN3)-initiated “living” ring-opening polymerization of ethylene oxide and chain end functionalizations.
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Affiliation(s)
- Sera Yang
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Youn Kim
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | | | - Abu B. Siddique
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Gyusaang Youn
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Hyun Jun Kim
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Hyeon Jong Park
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Jae Yeol Lee
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
| | - Sehoon Kim
- Center for Theragnosis
- KIST
- Seoul 136-791
- Korea
| | - Jungahn Kim
- Department of Chemistry
- Kyung Hee University
- Seoul 130-701
- Korea
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41
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López JV, Pérez-Camargo RA, Zhang B, Grayson SM, Müller AJ. The influence of small amounts of linear polycaprolactone chains on the crystallization of cyclic analogue molecules. RSC Adv 2016. [DOI: 10.1039/c6ra04823d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
C-PCL/L-PCL blends show a synergistic decrease in their isothermal crystallization rates as compared to the expectation of a simple mixing law due to the threading effect of the linear on the cyclic chains.
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Affiliation(s)
- Juan V. López
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
| | - Ricardo A. Pérez-Camargo
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
| | - Boyu Zhang
- Department of Chemistry
- Tulane University
- New Orleans
- USA
| | | | - Alejandro J. Müller
- Grupo de Polímeros USB
- Departamento de Ciencia de los Materiales
- Universidad Simón Bolívar
- Caracas 1080-A
- Venezuela
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42
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Zhang L, Elupula R, Grayson SM, Torkelson JM. Major Impact of Cyclic Chain Topology on the Tg-Confinement Effect of Supported Thin Films of Polystyrene. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02474] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Ravinder Elupula
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Scott M. Grayson
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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43
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Lim SI, Hahn YS, Kwon I. Site-specific albumination of a therapeutic protein with multi-subunit to prolong activity in vivo. J Control Release 2015; 207:93-100. [PMID: 25862515 PMCID: PMC4430413 DOI: 10.1016/j.jconrel.2015.04.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 02/03/2015] [Accepted: 04/05/2015] [Indexed: 11/21/2022]
Abstract
Albumin fusion/conjugation (albumination) has been an effective method to prolong in vivo half-life of therapeutic proteins. However, its broader application to proteins with complex folding pathway or multi-subunit is restricted by incorrect folding, poor expression, heterogeneity, and loss of native activity of the proteins linked to albumin. We hypothesized that the site-specific conjugation of albumin to a permissive site of a target protein will expand the utilities of albumin as a therapeutic activity extender to proteins with a complex structure. We show here the genetic incorporation of a non-natural amino acid (NNAA) followed by chemoselective albumin conjugation to prolong therapeutic activity in vivo. Urate oxidase (Uox), a therapeutic enzyme for treatment of hyperuricemia, is a homotetramer with multiple surface lysines, limiting conventional approaches for albumination. Incorporation of p-azido-l-phenylalanine into two predetermined positions of Uox allowed site-specific linkage of dibenzocyclooctyne-derivatized human serum albumin (HSA) through strain-promoted azide-alkyne cycloaddition (SPAAC). The bio-orthogonality of SPAAC resulted in the production of a chemically well-defined conjugate, Uox-HSA, with a retained enzymatic activity. Uox-HSA had a half-life of 8.8 h in mice, while wild-type Uox had a half-life of 1.3 h. The AUC increased 5.5-fold (1657 vs. 303 mU/mL x h). These results clearly demonstrated that site-specific albumination led to the prolonged enzymatic activity of Uox in vivo. Site-specific albumination enabled by NNAA incorporation and orthogonal chemistry demonstrates its promise for the development of long-acting protein therapeutics with high potency and safety.
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Affiliation(s)
- Sung In Lim
- Department of Chemical Engineering, University of Virginia, VA 22904, United States
| | - Young S Hahn
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, VA 22908, United States
| | - Inchan Kwon
- Department of Chemical Engineering, University of Virginia, VA 22904, United States; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea.
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44
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Cortez MA, Godbey WT, Fang Y, Payne ME, Cafferty BJ, Kosakowska KA, Grayson SM. The Synthesis of Cyclic Poly(ethylene imine) and Exact Linear Analogues: An Evaluation of Gene Delivery Comparing Polymer Architectures. J Am Chem Soc 2015; 137:6541-9. [PMID: 25927655 DOI: 10.1021/jacs.5b00980] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The delivery of genetic material to cells offers the potential to treat many genetic diseases. Cationic polymers, specifically poly(ethylene imine) (PEI), are promising gene delivery vectors due to their inherent ability to condense genetic material and successfully affect its transfection. However, PEI and many other cationic polymers also exhibit high cytotoxicity. To systematically study the effect of polymer architecture on gene delivery efficiency and cell cytotoxicity, a set of cyclic PEIs were prepared for the first time and compared to a set of linear PEIs of the exact same molecular weight. Subsequent in vitro transfection studies determined a higher transfection efficiency for each cyclic PEI sample when compared to its linear PEI analogue in addition to reduced toxicity relative to the branched PEI "gold standard" control. These results highlight the critical role that the architecture of PEI can play in both optimizing transfection and reducing cell toxicity.
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Affiliation(s)
- Mallory A Cortez
- †Department of Physical Sciences, Nicholls State University, Thibodaux, Louisiana 70310, United States
| | - W T Godbey
- ‡Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Yunlan Fang
- ‡Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Molly E Payne
- §Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Brian J Cafferty
- §Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Karolina A Kosakowska
- §Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Scott M Grayson
- §Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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45
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Lim SI, Yoon S, Kim YH, Kwon I. Site-specific bioconjugation of an organometallic electron mediator to an enzyme with retained photocatalytic cofactor regenerating capacity and enzymatic activity. Molecules 2015; 20:5975-86. [PMID: 25853315 PMCID: PMC6272604 DOI: 10.3390/molecules20045975] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/20/2015] [Accepted: 03/25/2015] [Indexed: 02/02/2023] Open
Abstract
Photosynthesis consists of a series of reactions catalyzed by redox enzymes to synthesize carbohydrates using solar energy. In order to take the advantage of solar energy, many researchers have investigated artificial photosynthesis systems mimicking the natural photosynthetic enzymatic redox reactions. These redox reactions usually require cofactors, which due to their high cost become a key issue when constructing an artificial photosynthesis system. Combining a photosensitizer and an Rh-based electron mediator (RhM) has been shown to photocatalytically regenerate cofactors. However, maintaining the high concentration of cofactors available for efficient enzymatic reactions requires a high concentration of the expensive RhM; making this process cost prohibitive. We hypothesized that conjugation of an electron mediator to a redox enzyme will reduce the amount of electron mediators necessary for efficient enzymatic reactions. This is due to photocatalytically regenerated NAD(P)H being readily available to a redox enzyme, when the local NAD(P)H concentration near the enzyme becomes higher. However, conventional random conjugation of RhM to a redox enzyme will likely lead to a substantial loss of cofactor regenerating capacity and enzymatic activity. In order to avoid this issue, we investigated whether bioconjugation of RhM to a permissive site of a redox enzyme retains cofactor regenerating capacity and enzymatic activity. As a model system, a RhM was conjugated to a redox enzyme, formate dehydrogenase obtained from Thiobacillus sp. KNK65MA (TsFDH). A RhM-containing azide group was site-specifically conjugated to p-azidophenylalanine introduced to a permissive site of TsFDH via a bioorthogonal strain-promoted azide-alkyne cycloaddition and an appropriate linker. The TsFDH-RhM conjugate exhibited retained cofactor regenerating capacity and enzymatic activity.
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Affiliation(s)
- Sung In Lim
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22904, USA.
| | - Sungho Yoon
- Department of Bio & Nano Chemistry, Kookmin University, 861-1 Jeoungnung-dong, Seongbuk-gu, Seoul 136-702, Korea.
| | - Yong Hwan Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea.
| | - Inchan Kwon
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA 22904, USA.
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
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46
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Müller A, Michell R, Pérez R, Lorenzo A. Successive Self-nucleation and Annealing (SSA): Correct design of thermal protocol and applications. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.015] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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Wang J, Li Z, Pérez RA, Müller AJ, Zhang B, Grayson SM, Hu W. Comparing crystallization rates between linear and cyclic poly(epsilon-caprolactones) via fast-scan chip-calorimeter measurements. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Sun P, Tang Q, Wang Z, Zhao Y, Zhang K. Cyclic polymers based on UV-induced strain promoted azide–alkyne cycloaddition reaction. Polym Chem 2015. [DOI: 10.1039/c5py00416k] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique ring-closure method was developed for the preparation of cyclic polymers based on the combination of atom transfer radical polymerization and UV-induced strain promoted azide–alkyne cycloaddition reaction.
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Affiliation(s)
- Peng Sun
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- The Chinese Academy of Sciences
- Beijing 100190
- China
| | - Qingquan Tang
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- The Chinese Academy of Sciences
- Beijing 100190
- China
| | - Zhenpeng Wang
- National Center for Mass Spectrometry in Beijing
- Institute of Chemistry
- The Chinese Academy of Sciences
- Beijing 100190
- China
| | - Yuming Zhao
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- The Chinese Academy of Sciences
- Beijing 100190
- China
| | - Ke Zhang
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- The Chinese Academy of Sciences
- Beijing 100190
- China
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Josse T, De Winter J, Dubois P, Coulembier O, Gerbaux P, Memboeuf A. A tandem mass spectrometry-based method to assess the architectural purity of synthetic polymers: a case of a cyclic polylactide obtained by click chemistry. Polym Chem 2015. [DOI: 10.1039/c4py01087f] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A tandem mass spectrometry-based method is developed to determine the degree of purity achieved in the cyclization of a linear poly(l-lactide).
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Affiliation(s)
- Thomas Josse
- Interdisciplinary Center for Mass Spectrometry
- Organic Synthesis and Mass Spectrometry Laboratory
- University of Mons
- 7000 Mons
- Belgium
| | - Julien De Winter
- Interdisciplinary Center for Mass Spectrometry
- Organic Synthesis and Mass Spectrometry Laboratory
- University of Mons
- 7000 Mons
- Belgium
| | - Philippe Dubois
- Center of Innovation and Research in Materials and Polymers
- Laboratory of Polymeric and Composite Materials
- University of Mons
- Mons
- Belgium
| | - Olivier Coulembier
- Center of Innovation and Research in Materials and Polymers
- Laboratory of Polymeric and Composite Materials
- University of Mons
- Mons
- Belgium
| | - Pascal Gerbaux
- Interdisciplinary Center for Mass Spectrometry
- Organic Synthesis and Mass Spectrometry Laboratory
- University of Mons
- 7000 Mons
- Belgium
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