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Lukáš Petrova S, Vragović M, Pavlova E, Černochová Z, Jäger A, Jäger E, Konefał R. Smart Poly(lactide)- b-poly(triethylene glycol methyl ether methacrylate) (PLA- b-PTEGMA) Block Copolymers: One-Pot Synthesis, Temperature Behavior, and Controlled Release of Paclitaxel. Pharmaceutics 2023; 15:pharmaceutics15041191. [PMID: 37111676 PMCID: PMC10143907 DOI: 10.3390/pharmaceutics15041191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
This paper introduces a new class of amphiphilic block copolymers created by combining two polymers: polylactic acid (PLA), a biocompatible and biodegradable hydrophobic polyester used for cargo encapsulation, and a hydrophilic polymer composed of oligo ethylene glycol chains (triethylene glycol methyl ether methacrylate, TEGMA), which provides stability and repellent properties with added thermo-responsiveness. The PLA-b-PTEGMA block copolymers were synthesized using ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization (ROP-RAFT), resulting in varying ratios between the hydrophobic and hydrophilic blocks. Standard techniques, such as size exclusion chromatography (SEC) and 1H NMR spectroscopy, were used to characterize the block copolymers, while 1H NMR spectroscopy, 2D nuclear Overhauser effect spectroscopy (NOESY), and dynamic light scattering (DLS) were used to analyze the effect of the hydrophobic PLA block on the LCST of the PTEGMA block in aqueous solutions. The results show that the LCST values for the block copolymers decreased with increasing PLA content in the copolymer. The selected block copolymer presented LCST transitions at physiologically relevant temperatures, making it suitable for manufacturing nanoparticles (NPs) and drug encapsulation-release of the chemotherapeutic paclitaxel (PTX) via temperature-triggered drug release mechanism. The drug release profile was found to be temperature-dependent, with PTX release being sustained at all tested conditions, but substantially accelerated at 37 and 40 °C compared to 25 °C. The NPs were stable under simulated physiological conditions. These findings demonstrate that the addition of hydrophobic monomers, such as PLA, can tune the LCST temperatures of thermo-responsive polymers, and that PLA-b-PTEGMA copolymers have great potential for use in drug and gene delivery systems via temperature-triggered drug release mechanisms in biomedicine applications.
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Affiliation(s)
- Svetlana Lukáš Petrova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Martina Vragović
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Zulfiya Černochová
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
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2
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Thambi T, Jung JM, Lee DS. Recent strategies to develop pH-sensitive injectable hydrogels. Biomater Sci 2023; 11:1948-1961. [PMID: 36723174 DOI: 10.1039/d2bm01519f] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
"Smart" biomaterials that are responsive to pathological abnormalities are an appealing class of therapeutic platforms for the development of personalized medications. The development of such therapeutic platforms requires novel techniques that could precisely deliver therapeutic agents to the diseased tissues, resulting in enhanced therapeutic effects without harming normal tissues. Among various therapeutic platforms, injectable pH-responsive biomaterials are promising biomaterials that respond to the change in environmental pH. Aqueous solutions of injectable pH-responsive biomaterials exhibit a phase transition from sol-to-gel in response to environmental pH changes. The injectable pH-responsive hydrogel depot can provide spatially and temporally controlled release of various bioactive agents including chemotherapeutic drugs, peptides, and proteins. Therapeutic agents are imbibed into hydrogels by simple mixing without the use of toxic solvents and used for long-term storage or in situ injection using a syringe or catheter that could form a stable gel and acts as a controlled release depot in a minimally invasive manner. Tunable physicochemical properties of the hydrogels, such as biodegradability, ability to interact with drugs and mechanical properties, can control the release of the therapeutic agent. This review highlights the advances in the design and development of biodegradable and in situ forming injectable pH-responsive biomaterials that respond to the physiological conditions. Special attention has been paid to the development of amphoteric pH-responsive biomaterials and their utilization in biomedical applications. We also highlight key challenges and future directions of pH-responsive biomaterials in clinical translation.
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Affiliation(s)
- Thavasyappan Thambi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Jae Min Jung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Doo Sung Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Maity T, Paul S, De P. Side-chain amino acid-based macromolecular architectures. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2023. [DOI: 10.1080/10601325.2023.2169158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Tanmoy Maity
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Soumya Paul
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
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Wang J, Pan Z, Liu J, Shao Q, Liang Y, Huang S, Jin W, Li Z, Zhang Z, Ye C, Chen Y, Wei P, Wang Y, He Y, Xia Y. Thermoresponsive homo-polymeric ionic liquid as molecular transporters via tailoring interchain π-π interactions and its unique Temp-resistance behavior during ions pairing. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Morinaga H, Koike Y. Cross‐linking reaction of diastereomeric bis‐limonene oxide with polyhydric carboxylic acid. J Appl Polym Sci 2022. [DOI: 10.1002/app.52929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hisatoyo Morinaga
- Faculty of Education, Graduate Faculty of Interdisciplinary Research University of Yamanashi Yamanashi Japan
| | - Yutaka Koike
- Faculty of Education University of Yamanashi Yamanashi Japan
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6
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Density, viscosity and electrical conductivity of four amino acid based ionic liquids derived from L-Histidine, L-Lysine, L-Serine, and Glycine. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Liu C, Raza F, Qian H, Tian X. Recent advances in poly(ionic liquid)s for biomedical application. Biomater Sci 2022; 10:2524-2539. [PMID: 35411889 DOI: 10.1039/d2bm00046f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Poly(ionic liquid)s (PILs) are polymers containing ions in their side-chain or backbone, and the designability and outstanding physicochemical properties of PILs have attracted widespread attention from researchers. PILs have specific characteristics, including negligible vapor pressure, high thermal and chemical stability, non-flammability, and self-assembly capabilities. PILs can be well combined with advanced analytical instruments and technology and have made outstanding contributions to the development of biomedicine aiding in the continuous advancement of science and technology. Here we reviewed the advances of PILs in the biomedical field in the past five years with a focus on applications in proteomics, drug delivery, and development. This paper aims to engage pharmaceutical and biomedical scientists to full understand PILs and accelerate the progress from laboratory research to industrialization.
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Affiliation(s)
- Chunxia Liu
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. .,Henan Key Laboratory of Precision Clinical Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Faisal Raza
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan, Road, Shanghai, 200240, China
| | - Hai Qian
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China.
| | - Xin Tian
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. .,Henan Key Laboratory of Precision Clinical Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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8
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Sahoo S, Maiti I, Laha A, De R, Maiti S, De P. Cholate Conjugated Cationic Polymers for Regulation of Actin Dynamics. J Mater Chem B 2022; 10:8033-8045. [DOI: 10.1039/d2tb01364a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cytoskeletal movement is a compulsory necessity for proper cell functioning and is largely controlled by actin filament dynamics. The actin dynamics can be finetuned by various natural and artificial materials...
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Light-Responsive Soft Actuators: Mechanism, Materials, Fabrication, and Applications. ACTUATORS 2021. [DOI: 10.3390/act10110298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Soft robots are those that can move like living organisms and adapt to the surrounding environment. Compared with traditional rigid robots, the advantages of soft robots, in terms of material flexibility, human–computer interaction, and biological adaptability, have received extensive attention. Flexible actuators based on light response are one of the most promising ways to promote the field of cordless soft robots, and they have attracted the attention of scientists in bionic design, actuation implementation, and application. First, the three working principles and the commonly used light-responsive materials for light-responsive actuators are introduced. Then, the characteristics of light-responsive soft actuators are sequentially presented, emphasizing the structure strategy, actuation performance, and emerging applications. Finally, this review is concluded with a perspective on the existing challenges and future opportunities in this nascent research frontier.
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Nayak K, Ghosh P, Khan MEH, De P. Side‐chain amino‐acid‐based polymers: self‐assembly and bioapplications. POLYM INT 2021. [DOI: 10.1002/pi.6278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Kasturee Nayak
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
| | - Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
| | - Md Ezaz Hasan Khan
- School of General Education, College of the North Atlantic – Qatar Doha Qatar
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Nadia India
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11
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Gupta SS, Mishra V, Mukherjee MD, Saini P, Ranjan KR. Amino acid derived biopolymers: Recent advances and biomedical applications. Int J Biol Macromol 2021; 188:542-567. [PMID: 34384802 DOI: 10.1016/j.ijbiomac.2021.08.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 01/19/2023]
Abstract
Over the past few years, amino acids (AA) have emerged as promising biomaterials for the synthesis of functional polymers. Owing to the diversity of functional groups in amino acids, various polymerization methods may be used to make a wide range of well-defined functional amino-acid/peptide-based optically active polymers with varying polymer lengths, compositions, and designs. When incorporated with chirality and self-assembly, they offer a wide range of applications and are particularly appealing in the field of drug delivery, tissue engineering, and biosensing. There are several classes of these polymers that include polyamides (PA), polyesters (PE), poly(ester-amide)s (PEA)s, polyurethanes (PU)s, poly(depsipeptide)s (PDP)s, etc. They offer the ability to control functionality, conjugation, crosslinking, stimuli responsiveness, and tuneable mechanical/thermal properties. In this review, we present the recent advancements in the synthesis strategies for obtaining these amino acid-derived bio-macromolecules, their self-assembly properties, and the wealth of prevalent applications.
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Affiliation(s)
| | - Vivek Mishra
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, NOIDA, India.
| | | | | | - Kumar Rakesh Ranjan
- Amity Institute of Applied Sciences, Amity University Uttar Pradesh, NOIDA, India.
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12
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Varlas S, Maitland GL, Derry MJ. Protein-, (Poly)peptide-, and Amino Acid-Based Nanostructures Prepared via Polymerization-Induced Self-Assembly. Polymers (Basel) 2021; 13:2603. [PMID: 34451144 PMCID: PMC8402019 DOI: 10.3390/polym13162603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/31/2021] [Accepted: 08/01/2021] [Indexed: 12/13/2022] Open
Abstract
Proteins and peptides, built from precisely defined amino acid sequences, are an important class of biomolecules that play a vital role in most biological functions. Preparation of nanostructures through functionalization of natural, hydrophilic proteins/peptides with synthetic polymers or upon self-assembly of all-synthetic amphiphilic copolypept(o)ides and amino acid-containing polymers enables access to novel protein-mimicking biomaterials with superior physicochemical properties and immense biorelevant scope. In recent years, polymerization-induced self-assembly (PISA) has been established as an efficient and versatile alternative method to existing self-assembly procedures for the reproducible development of block copolymer nano-objects in situ at high concentrations and, thus, provides an ideal platform for engineering protein-inspired nanomaterials. In this review article, the different strategies employed for direct construction of protein-, (poly)peptide-, and amino acid-based nanostructures via PISA are described with particular focus on the characteristics of the developed block copolymer assemblies, as well as their utilization in various pharmaceutical and biomedical applications.
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Affiliation(s)
- Spyridon Varlas
- Department of Chemistry, University College London, London WC1H 0AJ, UK
| | - Georgia L Maitland
- Aston Institute of Materials Research, Aston University, Birmingham B4 7ET, UK
| | - Matthew J Derry
- Aston Institute of Materials Research, Aston University, Birmingham B4 7ET, UK
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13
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Masuko K, Kumano C, Sugawara R, Nakabayashi K, Mori H. Polymerization‐induced self‐assembly of amino‐acid‐based nano‐objects by reversible addition–fragmentation chain‐transfer dispersion polymerization. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Kazunori Masuko
- Graduate School of Organic Materials Science Yamagata University Yonezawa Japan
| | - Chiharu Kumano
- Graduate School of Organic Materials Science Yamagata University Yonezawa Japan
| | - Ryo Sugawara
- Graduate School of Organic Materials Science Yamagata University Yonezawa Japan
| | | | - Hideharu Mori
- Graduate School of Organic Materials Science Yamagata University Yonezawa Japan
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14
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Fritz AT, Cazotti JC, Garcia‐Valdez O, Smeets NMB, Dubé MA, Cunningham MF. Grafting pH‐Responsive Copolymers to Cold Water‐Soluble Starch Using Nitroxide‐Mediated Polymerization. MACROMOL REACT ENG 2021. [DOI: 10.1002/mren.202100011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alexander T. Fritz
- Department of Chemical Engineering Queen's University, 19 Division St. Kingston Ontario K7L 2N9 Canada
| | - Jaime C. Cazotti
- Department of Chemical Engineering Queen's University, 19 Division St. Kingston Ontario K7L 2N9 Canada
| | - Omar Garcia‐Valdez
- Department of Chemical Engineering Queen's University, 19 Division St. Kingston Ontario K7L 2N9 Canada
| | | | - Marc A. Dubé
- Department of Chemical and Biological Engineering University of Ottawa 161 Louis Pasteur Pvt. Ottawa Ontario K1N 6N5 Canada
| | - Michael F. Cunningham
- Department of Chemical Engineering Queen's University, 19 Division St. Kingston Ontario K7L 2N9 Canada
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15
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Li Z, Liang B. Modulation of phase transition of poly(
N
‐isopropylacrylamide)‐based microgels for pulsatile drug release. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Zhifeng Li
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
| | - Bing Liang
- State Key Laboratory of Polymer Materials Engineering Polymer Research Institute, Sichuan University Chengdu China
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Kumbhakar K, Dey A, Mondal A, De P, Biswas R. Interactions and Dynamics in Aqueous Solutions of pH-Responsive Polymers: A Combined Fluorescence and Dielectric Relaxation Study. J Phys Chem B 2021; 125:6023-6035. [PMID: 34057364 DOI: 10.1021/acs.jpcb.1c03435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Interaction and dynamics of aqueous solutions of pH-responsive smart polymers are investigated via steady-state, time-resolved fluorescence emission spectroscopy with the help of external local reporter coumarin 153 (C153), while MHz to GHz dielectric relaxation spectroscopic (DRS) measurement reports the intrinsic medium relaxation features. A series of pH-responsive random copolymers (DPL-DP60) comprising of a pH-responsive moiety 2-((leucinyl)oxy)ethyl methacrylate (l-Leu-HEMA) and hydrophobic methyl methacrylate (MMA) are synthesized and characterized. A balance between the pH-responsive (l-Leu-HEMA) and the hydrophobic (MMA) content dictates the phase transition pH, which is found to be ∼5-7 for these aqueous copolymer solutions (1 mg/mL). Dynamic light scattering measurements in aqueous solutions of these polymers reflect a small particle size (∼2-8 nm) at solution pH below their individual phase transition pH, while a large particle size (∼140-340 nm) forms beyond their phase transition pH. No signature of a phase transition pH-driven abrupt change in static and dynamic properties of aqueous polymer solutions has been registered from pH-dependent dielectric relaxation as well as solute (C153)-centric fluorescence measurements. A significant impact of varying the l-Leu-HEMA/MMA segment ratio on steady-state fluorescence emission and rotational anisotropy decay of the fluorophore solute (C153) has been observed. MHz to GHz DRS in aqueous solutions of these pH-responsive polymers reflects bulk water-like dielectric features.
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Affiliation(s)
- Kajal Kumbhakar
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Asmita Dey
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Amrita Mondal
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Ranjit Biswas
- Chemical, Biological and Macromolecular Sciences (CBMS), S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
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Choudhury N, Das S, Samadder S, De P. Phenylalanine-Tethered pH-Responsive Poly(2-Hydroxyethyl Methacrylate). Chem Asian J 2021; 16:1016-1024. [PMID: 33751842 DOI: 10.1002/asia.202100136] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/09/2021] [Indexed: 11/09/2022]
Abstract
A series of pH-responsive random copolymers comprised of 2-hydroxyethyl methacrylate (HEMA) and tert-butyl carbamate (Boc)-protected phenylalanine methacryloyloxyethyl ester (Boc-Phe-EMA) were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization in N,N'-dimethylformamide (DMF) at 70 °C. The synthesized copolymers were comprehensively characterized using a combination of techniques, including 1 H NMR, FT-IR spectroscopy and size exclusion chromatography (SEC). Reactivity of each monomers towards controlled radical polymerization was evaluated by determining the reactivity ratios by virtue of extended Kelen-Tüdös method at high conversions revealed the higher reactivity of non-modified HEMA (rHEMA =1.03) in contrast to Boc-Phe-EMA (rBoc-Phe-EMA =0.48). Furthermore, the expulsion of the Boc-groups resulted copolymers with ionizable pendant primary ammonium and hydroxyl groups. To understand the glass transition behaviours of homo- and co-polymers, differential scanning calorimetric (DSC) measurements were carried out. The effect of HEMA content on the pH-sensitivity of the copolymers in aqueous medium was investigated through turbidity measurements. Finally, the counteranion exchange from trifluoroacetate to chloride provided copolymers with enhanced water solubility and unaltered phase transition pH.
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Affiliation(s)
- Neha Choudhury
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, Nadia, West Bengal, India
| | - Somnath Das
- Unilever R & D Bangalore, 64 main Road, Whitefield, Bangalore, 560066, India
| | - Satyajit Samadder
- Unilever R & D Bangalore, 64 main Road, Whitefield, Bangalore, 560066, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, Nadia, West Bengal, India
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18
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Kudaibergenov SE. Synthetic and natural polyampholytes: Structural and behavioral similarity. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sarkyt E. Kudaibergenov
- Institute of Polymer Materials and Technology Atyrau Kazakhstan
- Laboratory of Engineering Profile Satbayev University Almaty Kazakhstan
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19
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Ghosh P, De P. Modulation of Amyloid Protein Fibrillation by Synthetic Polymers: Recent Advances in the Context of Neurodegenerative Diseases. ACS APPLIED BIO MATERIALS 2020; 3:6598-6625. [DOI: 10.1021/acsabm.0c01021] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
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Konefał R, Černoch P, Konefał M, Spěváček J. Temperature Behavior of Aqueous Solutions of Poly(2-oxazoline) Homopolymer and Block Copolymers Investigated by NMR Spectroscopy and Dynamic Light Scattering. Polymers (Basel) 2020; 12:E1879. [PMID: 32825475 PMCID: PMC7565327 DOI: 10.3390/polym12091879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 11/16/2022] Open
Abstract
1H NMR methods in combination with dynamic light scattering were applied to study temperature behavior of poly(2-isopropyl-2-oxazoline) (PIPOx) homopolymer as well as PIPOx-b-poly(2-methyl-2-oxazoline) (PMeOx) and poly(2-ethyl-2-oxazoline) (PEtOx)-b-PMeOx diblock copolymers in aqueous solutions. 1H NMR spectra showed a different way of phase transition for the main and side chains in PIPOx-based solutions. Additionally, the phase transition is irreversible for PIPOx homopolymer and partially reversible for PIPOx-b-PMeOx copolymer. As revealed by NMR, the phase transition in PEtOx-based copolymers solutions exists despite the absence of solution turbidity. It is very broad, virtually independent of the copolymer composition and reversible with some hysteresis. Two types of water molecules were detected in solutions of the diblock copolymers above the phase transition-"free" with long and "bound" with short spin-spin relaxation times T2. NOESY spectra revealed information about conformational changes observed already in the pre-transition region of PIPOx-b-PMeOx copolymer solution.
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Affiliation(s)
- Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (P.Č.); (M.K.)
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Biswas CS, Biswas A, Galluzzi M, Shekh MI, Wang Q, Ray B, Maiti P, Stadler FJ. Synthesis and characterization of novel amphiphilic biocompatible block-copolymers of poly(N-isopropylacrylamide)-b-poly(l-phenylalanine methyl ester) by RAFT polymerization. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122760] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Soficheva OS, Nesterova AA, Dobrynin AB, Zueva EM, Heinicke JW, Sinyashin OG, Yakhvarov DG. The effect of N-substituent on the relative thermodynamic stability of unionized and zwitterionic forms of α-diphenylphosphino-α-amino acids. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.07.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Multi-stimuli-responsive chiral-achiral ampholytic block copolymers composed of poly(N-acryloyl amino acid) and poly(vinyl amine). REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104540] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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24
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Qureshi D, Nayak SK, Maji S, Anis A, Kim D, Pal K. Environment sensitive hydrogels for drug delivery applications. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109220] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Filipović VV, Babić MM, Gođevac D, Pavić A, Nikodinović‐Runić J, Tomić SL. In Vitro and In Vivo Biocompatibility of Novel Zwitterionic Poly(Beta Amino)Ester Hydrogels Based on Diacrylate and Glycine for Site‐Specific Controlled Drug Release. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Vuk V. Filipović
- Institute for Chemistry, Technology and Metallurgy University of Belgrade Njegoševa 12 11000 Belgrade Serbia
| | - Marija M. Babić
- Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Dejan Gođevac
- Institute for Chemistry, Technology and Metallurgy University of Belgrade Njegoševa 12 11000 Belgrade Serbia
| | - Aleksandar Pavić
- Institute of Molecular Genetics and Genetic Engineering University of Belgrade Vojvode Stepe 444a 11000 Belgrade Serbia
| | - Jasmina Nikodinović‐Runić
- Institute of Molecular Genetics and Genetic Engineering University of Belgrade Vojvode Stepe 444a 11000 Belgrade Serbia
| | - Simonida Lj. Tomić
- Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
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Gomado FD, Wang Y, Kobina F, Dai C, Owusu-Boadi A. Impact of nanoparticles concentration on the properties of a reversible emulsion stabilized by pH-responsive cationic surfactant. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1623691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Foster Dodzi Gomado
- School of Petroleum Engineering, China University of Petroleum-East China , Qingdao , Shandong , China
| | - Yanling Wang
- School of Petroleum Engineering, China University of Petroleum-East China , Qingdao , Shandong , China
| | - Forson Kobina
- School of Petroleum Engineering, China University of Petroleum-East China , Qingdao , Shandong , China
| | - Caili Dai
- School of Petroleum Engineering, China University of Petroleum-East China , Qingdao , Shandong , China
| | - Augustus Owusu-Boadi
- School of Petroleum Engineering, China University of Petroleum-East China , Qingdao , Shandong , China
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27
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Kanto R, Qiao Y, Masuko K, Furusawa H, Yano S, Nakabayashi K, Mori H. Synthesis, Assembled Structures, and DNA Complexation of Thermoresponsive Lysine-Based Zwitterionic and Cationic Block Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4646-4659. [PMID: 30845801 DOI: 10.1021/acs.langmuir.8b04303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A series of anionic, zwitterionic, and cationic lysine-based block copolymers with a thermoresponsive segment were synthesized by the reversible addition-fragmentation chain transfer (RAFT) polymerization of N-acryloyl- N-carbobenzoxy-l-lysine [A-Lys(Cbz)-OH], which contains a carboxylic acid and a protected amine-functionality in the monomer unit. Carboxylic acid-containing homopolymers, poly(A-Lys(Cbz)-OH), with predetermined molecular weights with relatively low polydispersities were initially synthesized by RAFT polymerization of A-Lys(Cbz)-OH. The chain extension of the dithiocarbamate-terminated poly(A-Lys(Cbz)-OH) to N-isopropylacrylamide (NIPAM) via the RAFT process and subsequent deprotection afforded the zwitterionic block copolymer composed of thermoresponsive poly(NIPAM) and poly(A-Lys-OH), which exhibited switchability among the zwitterionic, anionic, and cationic states by pH change. The assembled structures and thermoresponsive and chiroptical properties of these block copolymers were evaluated by dynamic light scattering, circular dichroism, and turbidity measurements. Finally, the cationic block copolymer, poly(A-Lys-OMe)- b-poly(NIPAM), was obtained by the methylation of the carboxylic acid group in the zwitterionic poly(A-Lys-OH) segment. Selective interactions of DNA with the cationic poly(A-Lys-OMe) segment in the lysine-based block copolymer were further evaluated by agarose gel electrophoresis and atomic force microscopy measurements, which revealed characteristic assembled structures and temperature-responsive properties of the polyplexes.
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Gola A, Sacharczuk M, Musiał W. Synthesis of AMPSA Polymeric Derivatives Monitored by Electrical Conductivity and Evaluation of Thermosensitive Properties of Resulting Microspheres. Molecules 2019; 24:molecules24061164. [PMID: 30909617 PMCID: PMC6470677 DOI: 10.3390/molecules24061164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 12/11/2022] Open
Abstract
Four stimuli-responsive polymers of N-isopropylacrylamide (NIPA) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) and crosslinked derivatives by N,N′-methylene bisacrylamide (MBA) were synthesized: PNA, PAMPSA, PNAM, PAMPSAM. The effect of the cross-linker and methyl sulphonic acid (-CH3-SO3H) group on particle size, aggregation and volume phase transition temperature (VPTT) was investigated. Polymeric particles were synthesized via the surfactant free precipitation polymerization (SFPP) at 70 °C in the presence of cationic initiator 2,2′-azobis[2-methylpropionamidine] dihydrochloride (AMP) system. Chemical composition and morphology of investigated samples were evaluated using ATR-FTIR spectroscopy, 1H-NMR spectrometry and SEM-EDS techniques. The hydrodynamic diameters (HD), zeta potential (ZP), and polydispersity index (PDI) in aqueous dispersions were assessed by dynamic light scattering (DLS) between 18–42 °C. HD values at 18 °C for PNA, PAMPSA, PNAM, PAMPSAM polymers were approx. 32, 730, 715, 665 nm, and ZP values were −1.36, −0.01, 8.90, −0.09 mV, respectively. The VPTT range was observed between 29 and 41 °C. PDI’s for PNA and PNAM were low and varied between 0.276 and 0.460, and between 0.119 and 0.056, respectively. PAMPSA and PAMPSAM were characterized by higher PDI in the range 0.728–0.959 and 0.658–0.836, respectively. The results confirmed the thermal sensitivity of the synthesized polymers and indicated a significant polydispersity and aggregation tendency of the resulting molecules. The conductivity results were applied for the interpretation of the polymerization process.
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Affiliation(s)
- Agnieszka Gola
- Department of Physical Chemistry, Pharmaceutical Faculty, Wroclaw Medical University Borowska 211, 50-556 Wroclaw, Poland.
| | - Magdalena Sacharczuk
- Department of Physical Chemistry, Pharmaceutical Faculty, Wroclaw Medical University Borowska 211, 50-556 Wroclaw, Poland.
| | - Witold Musiał
- Department of Physical Chemistry, Pharmaceutical Faculty, Wroclaw Medical University Borowska 211, 50-556 Wroclaw, Poland.
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29
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Lazzari F, Manfredi A, Alongi J, Marinotto D, Ferruti P, Ranucci E. d-, l- and d,l-Tryptophan-Based Polyamidoamino Acids: pH-Dependent Structuring and Fluorescent Properties. Polymers (Basel) 2019; 11:E543. [PMID: 30960527 PMCID: PMC6473350 DOI: 10.3390/polym11030543] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/29/2022] Open
Abstract
Chiral polyamidoamino acids were obtained by polyaddition of N,N'-methylenebisacrylamide with d-, d,l- and l-tryptophan (M-d-Trp, M-d,l-Trp and M-l-Trp). l-tryptophan/glycine copolymers, M-G-l-Trp₅, M-G-l-Trp10, M-G-l-Trp20 and M-G-l-Trp40, were prepared from l-tryptophan/glycine mixtures. These polymers were amphoteric, with acid-base properties similar to those of the parent amino acids. The l-tryptophan/glycine copolymers with high glycine content were water soluble in the pH range 2-12. M-G-l-Trp40 showed a solubility gap centred at pH 4.5 and all tryptophan homopolymers were soluble only at pH > 7. Dynamic light scattering measurements performed in their solubility ranges, namely 2-11 M-G-l-Trp₅, M-G-l-Trp10 and M-G-l-Trp20 and 7-11 for M-G-l-Trp40, M-d-Trp, M-l-Trp and M-d,l-Trp, showed that the size of all samples did not significantly vary with pH. Both M-l-Trp and M-G-l-Trp copolymers showed pH-dependent circular dichroism spectra in the wavelength interval 200⁻280 nm, revealing structuring. All samples were fluorescent. Their emission spectra were unstructured and, if normalized for their tryptophan content, almost superimposable at the same pH, providing evidence that only tryptophan governed the photoluminescence properties. Changing pH induced in all cases a slight shift of the emission wavelength maximum ascribed to the modification of the microenvironment surrounding the indole ring induced by different protonation degrees.
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Affiliation(s)
- Federica Lazzari
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Amedea Manfredi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Jenny Alongi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Daniele Marinotto
- Istituto di Scienze e Tecnologie Molecolari (ISTM-CNR), via C. Golgi 19, 20133 Milano, Italy.
| | - Paolo Ferruti
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Elisabetta Ranucci
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
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30
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Barišić D, Tomišić V, Bregović N. Acid-base properties of phosphoric and acetic acid in aprotic organic solvents - A complete thermodynamic characterisation. Anal Chim Acta 2019; 1046:77-92. [PMID: 30482305 DOI: 10.1016/j.aca.2018.09.026] [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: 05/17/2018] [Revised: 08/28/2018] [Accepted: 09/13/2018] [Indexed: 01/15/2023]
Abstract
Knowledge regarding the acid-base behaviour in non-aqueous media has remained relatively scarce in spite of its importance for many aspects of chemistry. The research presented in this work fills some of particularly important gaps in the corresponding thermodynamic data. We report on a detailed study of acid-base properties of dihydrogen phosphate and acetate in aprotic organic solvents (acetonitrile, dimethyl sulfoxide, and dimethylformamide). It was found that several processes, i.e. protonation, homoassociation, and dimerisation play important roles in defining the basicity of these widely important anions. In the case of dihydrogen phosphate, formation of higher homoassociates (two anions, one acid molecule and vice versa) was detected, whereas acetate formed only simple homoassociates of 1:1 stoichiometry. The dimerisation of dihydrogen phosphate and acetic acid were confirmed to be important processes as well. The thermodynamics of the above mentioned reactions was characterised in detail by means of various experimental methods: ITC, spectrophotometry, NMR-spectroscopy, and conductometry. Reliable equilibrium constants and other thermodynamic reaction functions were determined. The obtained results were discussed in terms of hydrogen bonding potential of the anions and their conjugated acids, as well as solvent properties, i.e. their ability to solvate the species involved in the studied processes.
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Affiliation(s)
- D Barišić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia; Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - V Tomišić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia
| | - N Bregović
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia.
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31
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Jana S, Anas M, Maji T, Banerjee S, Mandal TK. Tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST. Polym Chem 2019. [DOI: 10.1039/c8py01512k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multi-stimuli responsive tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST under different conditions are presented.
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Affiliation(s)
- Somdeb Jana
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Mahammad Anas
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tanmoy Maji
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Sanjib Banerjee
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tarun K. Mandal
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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32
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Affiliation(s)
- Normen Peulecke
- Leibniz Institute for Catalysis at the University of Rostock 18059 Rostock Germany
| | - Dmitry G. Yakhvarov
- Arbuzov Institute of Organic and Physical Chemistry of FRC Kazan Scientific Center of RAS Russia
| | - Joachim W. Heinicke
- Institut für Biochemie Universität Greifswald Felix‐Hausdorff‐Str. 4 17487 Greifswald Germany
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Imamura R, Mori H. Synthesis of Zwitterionic Polymers Containing a Tertiary Sulfonium Group for Protein Stabilization. Biomacromolecules 2018; 20:904-915. [DOI: 10.1021/acs.biomac.8b01542] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ryutaro Imamura
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- NOF Corporation, 5-10 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Hideharu Mori
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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34
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Lazzari F, Manfredi A, Alongi J, Mendichi R, Ganazzoli F, Raffaini G, Ferruti P, Ranucci E. Self-Structuring in Water of Polyamidoamino Acids with Hydrophobic Side Chains Deriving from Natural α-Amino Acids. Polymers (Basel) 2018; 10:E1261. [PMID: 30961186 PMCID: PMC6401854 DOI: 10.3390/polym10111261] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/31/2018] [Accepted: 11/11/2018] [Indexed: 11/23/2022] Open
Abstract
This paper reports on synthesis, acid-base properties and self-structuring in water of chiral polyamidoamino acids (PAACs) obtained by polyaddition of N,N'-methylenebisacrylamide with l-alanine, l-valine and l-leucine (M-l-Ala, M-l-Val, M-l-Leu) with potential for selective interactions with biomolecules. The polymers maintained the acid-base properties of amino acids. In water, the circular dichroism spectra of PAACs revealed pH-dependent structuring in the range 3⁻11 and in the wavelength interval 200⁻280 nm. Taking as reference the values at pH 3, the differential molar ellipticities were plotted in the pH interval 3⁻11. Sigmoidal curves were obtained presenting inflection points at pH 8.1, 6.8 and 7.3 for M-l-Ala, M-l-Val and M-l-Leu, respectively, corresponding to the amine half-ionization. Theoretical modeling showed that PAACs assumed stable folded conformations. Intramolecular interactions led to transoid arrangements of the main chain reminiscent of protein hairpin motif. Oligomers with ten repeat units had simulated gyration radii consistent with the hydrodynamic radii obtained by dynamic light scattering.
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Affiliation(s)
- Federica Lazzari
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Amedea Manfredi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Jenny Alongi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Raniero Mendichi
- Istituto per lo Studio delle Macromolecole (CNR), Via E. Bassini 15, 20133 Milano, Italy.
| | - Fabio Ganazzoli
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, via L. Mancinelli 7, 20131 Milano, Italy.
| | - Giuseppina Raffaini
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, via L. Mancinelli 7, 20131 Milano, Italy.
| | - Paolo Ferruti
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
| | - Elisabetta Ranucci
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.
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Abdelaty MSA. Poly( N-isopropylacrylamide- co-2-((diethylamino)methyl)-4-formyl-6-methoxyphenyl acrylate) Environmental Functional Copolymers: Synthesis, Characterizations, and Grafting with Amino Acids. Biomolecules 2018; 8:E138. [PMID: 30404234 PMCID: PMC6316684 DOI: 10.3390/biom8040138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 11/29/2022] Open
Abstract
Vanillin was used to synthesize a new derivative with an active aldehyde group and response to pH. It is named 2-((diethylamino) methyl)-4-formyl-6-methoxyphenyl acrylate, abbreviated to DEAMVA. The chemical structures were evaluated by ¹H, 13C nuclear magnetic resonance (NMR), infrared (IR), and UV-Vis-spectroscopy, and all results demonstrated good statement. In order to achieve the dual responsive behavior thermo-pH with functionality, free radical polymerization of N-isopropylacrylamide with DEAMVA in different molar ratios (5, 10, 15 mol%) has been used, with azobisisobutyronitrile (AIBN) as the initiator. The chemical structure of the polymers was investigated by ¹H NMR and IR. The dual responsive functional copolymer was exposed to a grafted process with tryptophan and tyrosine, both of which were also evaluated by ¹HNMR and IR. Copolymers before and after grafting were physically investigated by size exclusion chromatography (SEC) for estimation of the molecular weight, the glass transition temperature by differential scanning calorimeter (DSC) and scanning electron microscope (SEM) for the surface morphology. The phase separation or lower critical solution temperature (LCST) (Tc) of the polymer solution was determined not only by a turbidity method using the change in the transmittance with temperature, but also by micro-DSC. The conversion to an amino acid-grafted polymer was detected through Beer's law for the absorption of the ⁻CH=N- imine group by UV-Vis-Spectroscopy.
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Affiliation(s)
- Momen S A Abdelaty
- Polymer and Biopolymer Lap, Department of Biology, Collage of Haql, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia.
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Lamch Ł, Pucek A, Kulbacka J, Chudy M, Jastrzębska E, Tokarska K, Bułka M, Brzózka Z, Wilk KA. Recent progress in the engineering of multifunctional colloidal nanoparticles for enhanced photodynamic therapy and bioimaging. Adv Colloid Interface Sci 2018; 261:62-81. [PMID: 30262128 DOI: 10.1016/j.cis.2018.09.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/13/2018] [Accepted: 09/15/2018] [Indexed: 12/12/2022]
Abstract
This up-to-date review summarizes the design and current fabrication strategies that have been employed in the area of mono- and multifunctional colloidal nanoparticles - nanocarriers well suited for photodynamic therapy (PDT) and diagnostic purposes. Rationally engineered photosensitizer (PS)-loaded nanoparticles may be achieved via either noncovalent (i.e., self-aggregation, interfacial deposition, interfacial polymerization, or core-shell entrapment along with physical adsorption) or covalent (chemical immobilization or conjugation) processes. These PS loading approaches should provide chemical and physical stability to PS payloads. Their hydrophilic surfaces, capable of appreciable surface interactions with biological systems, can be further modified using functional groups (stealth effect) to achieve prolonged circulation in the body after administration and/or grafted by targeting agents (such as ligands, which bind to specific receptors uniquely expressed on the cell surface) or stimuli (e.g., pH, temperature, and light)-responsive moieties to improve their action and targeting efficiency. These attempts may in principle permit efficacious PDT, combination therapies, molecular diagnosis, and - in the case of nanotheranostics - simultaneous monitoring and treatment. Nanophotosensitizers (nano-PSs) should possess appropriate morphologies, sizes, unimodal distributions and surface processes to be successfully delivered to the place of action after systemic administration and should be accumulated in certain tumors by passive and/or active targeting. Additionally, physically facilitating drug delivery systems emerge as a promising approach to enhancing drug delivery, especially for the non-invasive treatment of deep-seated malignant tissues. Recent advances in nano-PSs are scrutinized, with an emphasis on design principles, via the promising use of colloid chemistry and nanotechnology.
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Affiliation(s)
- Łukasz Lamch
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Agata Pucek
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy with Division of Laboratory Diagnostics, Medical University of Wrocław, Borowska 211A, 50-556 Wrocław, Poland
| | - Michał Chudy
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Elżbieta Jastrzębska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Katarzyna Tokarska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Magdalena Bułka
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Zbigniew Brzózka
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Kazimiera A Wilk
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
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Kang JH, Hwang JY, Seo JW, Kim HS, Shin US. Small intestine- and colon-specific smart oral drug delivery system with controlled release characteristic. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:247-254. [PMID: 30033252 DOI: 10.1016/j.msec.2018.05.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 05/04/2018] [Accepted: 05/15/2018] [Indexed: 12/23/2022]
Abstract
In recent years, there has been a significant increase in strategies for the development of small intestine (and colon)-specific oral drug-delivery systems to maximize the efficiency of therapeutic agents and reduce side effects. However, only a few strategies are capable of working in the complicated environment of the human intestinal tract. In this study, the preparation of a basic pH/temperature-responsive co-polymer (p-NIVIm) and its in-vitro-drug delivery function in the pH range of 1-8 and temperature range of 25-42 °C are reported. The basic copolymer was prepared by radical copolymerization of N-isopropyl acryl amide (NIPAAm) and N-vinylimidazole (VIm). The lower critical solution temperature (LCST) of p-NIVIm was higher in stomach pH (~1.0) conditions (36.5-42 °C) and lower in small intestine and/or colon pH (~8.0) conditions (35.8-38.2 °C). The ability to uptake a model protein (BSA) at body temperature and to release it in conditions of 37 °C and pH 1-8 was determined. The drug loading capacity (0.231 mg per 1.0 mg copolymer) and efficiency (92.4%) were high at 37 °C/pH 7. The drug carrier showed a slow release pattern at pH 1 (~0.084 mg; ~35%) and then a sudden release pattern (~0.177 mg; ~73%) at pH 8. The cytotoxicity of p-NIVIm to MCF-7 cells in vitro was minimal at concentrations <168.9 μg/mL after 72 h. The prepared copolymer with its pH-/temperature-responsive protein-entrapping and -releasing behavior at body temperature may potentially be applied as a novel small intestine (and colon)-specific oral drug delivery system.
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Affiliation(s)
- Ji-Hye Kang
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Chungnam, Cheonan 330-714, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Chungnam, Cheonan 330-714, Republic of Korea
| | - Ji-Young Hwang
- Department of Biomedical Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Jae-Won Seo
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Chungnam, Cheonan 330-714, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Chungnam, Cheonan 330-714, Republic of Korea
| | - Han-Sem Kim
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Chungnam, Cheonan 330-714, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Chungnam, Cheonan 330-714, Republic of Korea
| | - Ueon Sang Shin
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Chungnam, Cheonan 330-714, Republic of Korea; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Chungnam, Cheonan 330-714, Republic of Korea.
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38
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Mukherjee I, Ghosh A, Bhadury P, De P. Leucine-Based Polymer Architecture-Induced Antimicrobial Properties and Bacterial Cell Morphology Switching. ACS OMEGA 2018; 3:769-780. [PMID: 30023789 PMCID: PMC6044967 DOI: 10.1021/acsomega.7b01674] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/04/2018] [Indexed: 05/06/2023]
Abstract
To evaluate the comparative antibacterial activity of leucine-based cationic polymers having linear, hyperbranched, and star architectures containing both hydrophilic and hydrophobic segments against Gram-negative bacterium, Escherichia coli (E. coli), herein we performed zone of inhibition study, minimum inhibitory concentration (MIC) calculation, and bacterial growth experiment. The highest antibacterial activity in terms of the MIC value was found in hyperbranched and star architectures because of the greater extent of cationic and hydrophobic functionality, enhancing cell wall penetration ability compared to that of the linear polymer. The absence of the bacterial regrowth stage in the growth curve exhibited the highest bactericidal capacity of star polymers, when untreated cells (control) already reached to the stationary phase, whereas the bacterial regrowth stage with a delayed lag phase was critically observed for linear and hyperbranched architectures displaying lower bactericidal efficacy. Coagulation of E. coli cells, switching of cell morphology from rod to sphere, and lengthening due to stacking in an antimicrobial polymer-treated environment at the bacterial regrowth stage in liquid media were visualized critically by field emission scanning electron microscopy and confocal fluorescence microscopy instruments in the presence of 4',6-diamidino-2-phenylindole stain.
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Affiliation(s)
- Ishita Mukherjee
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Anwesha Ghosh
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Punyasloke Bhadury
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre,
Department of Chemical Sciences, Integrative Taxonomy
and Microbial Ecology Research Group, Department of Biological Sciences, and Centre for Advanced
Functional Materials, Indian Institute of
Science Education and Research Kolkata, Mohanpur, 741246 Nadia, West Bengal, India
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39
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Li G, Feng W, Corrigan N, Boyer C, Wang X, Xu J. Precise synthesis of poly(N-acryloyl amino acid) through photoinduced living polymerization. Polym Chem 2018. [DOI: 10.1039/c8py00366a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A library of N-acryloylamino acid polymers with controlled molecular weights and narrow molecular weight distributions (Mw/Mn < 1.20) was created by a universal and versatile photoinduced living radical polymerization technique.
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Affiliation(s)
- Guofeng Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Wenli Feng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Nathaniel Corrigan
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney 2052
- Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney 2052
- Australia
| | - Xing Wang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney 2052
- Australia
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40
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Bauri K, Nandi M, De P. Amino acid-derived stimuli-responsive polymers and their applications. Polym Chem 2018. [DOI: 10.1039/c7py02014g] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The recent advances achieved in the study of various stimuli-responsive polymers derived from natural amino acids have been reviewed.
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Affiliation(s)
- Kamal Bauri
- Department of Chemistry
- Raghunathpur College
- India
| | - Mridula Nandi
- Polymer Research Centre and Centre for Advanced Functional Materials
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- India
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41
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Liu ZJ, Huang S, Ran YY, Chen J, Hu XM, Du HS, Wang J. Functionalization of Silica Microparticles with Multiple-Responsive Copolymers for Smart Controlled Chromatograph. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b04570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jie Chen
- College
of Innovation and Entrepreneurship Education, Chongqing University of Post and Telecommunications, Chongqing 400065, China
| | | | | | - Jin Wang
- Suzhou
Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
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42
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Hu Y, Kim H, Shinde VV, Jeong D, Choi Y, Cho E, Jung S. Carboxymethyl cyclosophoraoses as a flexible pH-responsive solubilizer for pindolol. Carbohydr Polym 2017; 175:493-501. [DOI: 10.1016/j.carbpol.2017.08.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/04/2017] [Accepted: 08/06/2017] [Indexed: 11/26/2022]
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43
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Mukherjee I, Ghosh A, Bhadury P, De P. Side-Chain Amino Acid-Based Cationic Antibacterial Polymers: Investigating the Morphological Switching of a Polymer-Treated Bacterial Cell. ACS OMEGA 2017; 2:1633-1644. [PMID: 30023640 PMCID: PMC6044850 DOI: 10.1021/acsomega.7b00181] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/11/2017] [Indexed: 05/21/2023]
Abstract
Synthetic polymer-based antimicrobial materials destroy conventional antibiotic resistant microorganisms. Although these antibacterial polymers imitate the properties of antimicrobial peptides (AMPs), their effect on bacterial cell morphology has not been studied in detail. To investigate the morphology change of a bacterial cell in the presence of antimicrobial polymer, herein we have designed and synthesized side-chain amino acid-based cationic polymers, which showed efficient antibacterial activity against Gram-negative (Escherichia coli), as well as Gram-positive (Bacillus subtilis) bacteria. Morphological switching from a rod shape to a spherical shape of E. coli cells was observed by field emission-scanning electron microscopy analysis due to cell wall disruption, whereas the B. subtilis cell structure and size remained intact, but stacks of the cells formed after polymer treatment. The zone of inhibition experiment on an agar plate for E. coli cells exhibited drastic morphological changes at the vicinity of the polymer-treated portion and somewhat less of an effect at the periphery of the plate.
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Affiliation(s)
- Ishita Mukherjee
- Department
of Chemical Sciences and Department of Biological Sciences, Indian Institute of Science Education and Research
Kolkata, Mohanpur, 741246 Haringhata, Nadia, West
Bengal, India
| | - Anwesha Ghosh
- Department
of Chemical Sciences and Department of Biological Sciences, Indian Institute of Science Education and Research
Kolkata, Mohanpur, 741246 Haringhata, Nadia, West
Bengal, India
| | - Punyasloke Bhadury
- Department
of Chemical Sciences and Department of Biological Sciences, Indian Institute of Science Education and Research
Kolkata, Mohanpur, 741246 Haringhata, Nadia, West
Bengal, India
| | - Priyadarsi De
- Department
of Chemical Sciences and Department of Biological Sciences, Indian Institute of Science Education and Research
Kolkata, Mohanpur, 741246 Haringhata, Nadia, West
Bengal, India
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44
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Maiti B, Dutta P, Seal S, Pal S, De P, Maiti S. Side-chain amino acid based cationic polymer induced actin polymerization. J Mater Chem B 2017; 5:1218-1226. [PMID: 32263591 DOI: 10.1039/c6tb02814d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Actin filament dynamics is important for proper cellular functions and is controlled by hundreds of actin binding proteins inside the cells. There are several natural and synthetic compounds that are able to bind actin and alter the actin filament dynamics. Since the actin dynamics changes due to nonspecific electrostatic interactions between negatively charged actin and positively charged proteins, and natural or synthetic compounds, herein we report the synthesis of poly(tert-butyl carbamate (Boc)-l-alanine methacryloyloxyethyl ester) (P(Boc-Ala-HEMA)) homopolymer in a controlled fashion by the reversible addition-fragmentation chain transfer (RAFT) polymerization. Subsequent deprotection of the Boc groups in the homopolymer under acidic conditions resulted in a positively charged polymer with primary amine moieties at the side chains. This cationic polymer (P(NH3 +-Ala-HEMA)), is able to nucleate actin in vitro. The cationic polymer and corresponding partially fluorescence tagged polymer are able to nucleate actin filament in vivo. These polymers are nontoxic to the cultured cells and also stabilize the filamentous actin in vitro.
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Affiliation(s)
- Binoy Maiti
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
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45
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Responsive Polymer Nanostructures. POLYMER-ENGINEERED NANOSTRUCTURES FOR ADVANCED ENERGY APPLICATIONS 2017. [DOI: 10.1007/978-3-319-57003-7_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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46
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Oliva R, Ortenzi MA, Salvini A, Papacchini A, Giomi D. One-pot oligoamides syntheses from l-lysine and l-tartaric acid. RSC Adv 2017. [DOI: 10.1039/c7ra00676d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Oligoamides based on natural raw materials, l-lysine and l-tartaric acid, were synthesized using one-pot processes. A l-lysine diketopiperazine structure was obtained with good selectivity without protection/deprotection steps.
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Affiliation(s)
- R. Oliva
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino (FI)
- Italy
| | - M. A. Ortenzi
- CRC Materiali Polimerici (LaMPo)
- Dipartimento di Chimica
- 19 – 20133 Milano
- Italy
| | - A. Salvini
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino (FI)
- Italy
| | - A. Papacchini
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino (FI)
- Italy
| | - D. Giomi
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino (FI)
- Italy
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47
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Bauri K, Saha B, Mahanti J, De P. A nonconjugated macromolecular luminogen for speedy, selective and sensitive detection of picric acid in water. Polym Chem 2017. [DOI: 10.1039/c7py01579h] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A conventional fluorophore-free water-soluble copolymer based on poly(styrene-alt-maleimide) has been found to be selective and sensitive detection of picric acid in a 100% aqueous environment with prompt response.
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Affiliation(s)
- Kamal Bauri
- Department of Chemistry
- Raghunathpur College
- Raghunathpur-723133, Purulia
- India
| | - Biswajit Saha
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Nadia
- India
| | - Jnansankar Mahanti
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Nadia
- India
| | - Priyadarsi De
- Polymer Research Centre
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Nadia
- India
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48
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Mommer S, Keul H, Möller M. One-Pot Synthesis of Amino Acid-Based Polyelectrolytes and Nanoparticle Synthesis. Biomacromolecules 2016; 18:159-168. [DOI: 10.1021/acs.biomac.6b01420] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Stefan Mommer
- Institute of Technical and
Macromolecular Chemistry and DWI - Leibniz Institute for Interactive
Materials, RWTH Aachen University, Forckenbeckstraße 50, 52056 Aachen, Germany
| | - Helmut Keul
- Institute of Technical and
Macromolecular Chemistry and DWI - Leibniz Institute for Interactive
Materials, RWTH Aachen University, Forckenbeckstraße 50, 52056 Aachen, Germany
| | - Martin Möller
- Institute of Technical and
Macromolecular Chemistry and DWI - Leibniz Institute for Interactive
Materials, RWTH Aachen University, Forckenbeckstraße 50, 52056 Aachen, Germany
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49
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50
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Sharker SM, Kang EB, Shin CI, Kim SH, Lee G, Park SY. Near-infrared-active and pH-responsive fluorescent polymer-integrated hybrid graphene oxide nanoparticles for the detection and treatment of cancer. J Appl Polym Sci 2016. [DOI: 10.1002/app.43791] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shazid Md. Sharker
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 305-702 Republic of Korea
| | - Eun Bi Kang
- Department of Chemical and Biological Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
| | - Chun-Im Shin
- Department of Chemical and Biological Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
| | - Sung Han Kim
- Department of IT Convergence; Korea National University of Transportation; Chungju 380-702 Republic of Korea
| | - Gibaek Lee
- Department of Chemical and Biological Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
| | - Sung Young Park
- Department of Chemical and Biological Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
- Department of IT Convergence; Korea National University of Transportation; Chungju 380-702 Republic of Korea
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