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Wang L, Du Z, Xu M, Dai Q, Guo QY, Fan B, Tang W. Multi-Stimuli-Responsive Nanoparticles Formed of POSS-PEG for the Delivery of Boronic Acid-Containing Therapeutics. Biomacromolecules 2023; 24:5071-5082. [PMID: 37691317 DOI: 10.1021/acs.biomac.3c00677] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Polymeric vehicles often exhibit batch-to-batch variations due to polydispersity, limiting their reproducibility for biomedical applications. In contrast, polyhedral oligomeric silsesquioxane (POSS) has emerged as an attractive candidate for drug delivery due to its precise chemical structure and rigid molecular shape. A promising strategy to enhance drug efficacy while reducing systemic toxicity is the development of multi-stimuli-responsive delivery systems capable of targeted drug release at a disease site. Herein, we developed a drug delivery platform based on POSS-polymer conjugates. By functionalizing the POSS with amino groups and establishing B-N coordination with boronic acids, the nanoparticles (NPs) exhibit responsive behavior to stimuli, including adenosine-5'-triphosphate (ATP), acidic pH, and nucleophilic reagents. We successfully encapsulated two boronic acid-containing molecules: tetraphenylethylene (TPE), serving as a fluorescent probe, and bortezomib (BTZ), an anticancer drug. The TPE@NPs were employed to visualize the cellular uptake of NPs by tumor cells, while the BTZ@NPs exhibited increased cytotoxicity in tumor cells compared with normal cells. This POSS-PEG conjugate offers a nanoparticle platform for encapsulating versatile boronic acid-containing molecules, thereby enhancing drug efficacy while minimizing systemic toxicity. Given the wide-ranging applications of boronic acid-containing molecules in biomedicine, our platform holds significant promise for the development of intelligent drug delivery systems for diagnostics and therapeutics.
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Affiliation(s)
- Lan Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zhen Du
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Mengmeng Xu
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Qiuju Dai
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Qing-Yun Guo
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Baoer Fan
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Wen Tang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
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2
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Dascalu M, Stoica AC, Bele A, Macsim AM, Bargan A, Varganici CD, Stiubianu GT, Racles C, Shova S, Cazacu M. Octakis(Carboxyalkyl-Thioethyl)Silsesquioxanes and Derived Metal Complexes: Synthesis, Characterization and Catalytic Activity Assessments. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3
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Kumar K, Venkatesu P. Role of protein-copolymer assembly in controlling micellization process of amphiphilic triblock copolymer. J Colloid Interface Sci 2022; 608:2142-2157. [PMID: 34758421 DOI: 10.1016/j.jcis.2021.10.117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/20/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022]
Abstract
HYPOTHESIS Triblock copolymer poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEG-PPG-PEG) forms a well-known micellar assembly at a particular temperature. Apart from regular assembly within the copolymer, it is crucial to explore additional assembly behaviour via simple exposure of proteins which unveils biased interactions with blocks of copolymer. The current work focuses on the examination of Pluronic F108 i.e. PEG-PPG-PEG with two different proteins i.e. α-chymotrypsin (CT) and lysozyme (LSZ), aiming at probing the critical micellization temperature (CMT) and molecular level interactions. EXPERIMENTS Potential role of protein-copolymer assembly formation at a particular concentration of protein in modulating CMT was shown by a systematic experimental approach combined with a series of physicochemical methods. The sophisticated multiple techniques include fluorescence spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, dynamic light scattering (DLS), zeta potential measurements, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, molecular docking studies were also employed to correlate theoretical insights with experimental findings. FINDINGS CT and LSZ decrease CMT in regular concentration-dependent manner except for particular concentration (1.5 mg/mL) of LSZ which shows anomalous behaviour in steady-state fluorescence spectroscopy, temperature dependent fluorescence spectroscopy, Raman spectroscopy and DLS measurements. SEM and TEM results clearly reveal protein-copolymer assembly formation. The assembled structure has different biophysical properties. Docking studies elucidate several bio macromolecular interactions which can be involved in assembly formation. Based on obtained results from biophysical techniques mechanism of CMT variation was deduced. Obtained results can be useful in biosensors and targeted drug delivery systems.
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Affiliation(s)
- Krishan Kumar
- Department of Chemistry, University of Delhi, Delhi 110 007, India
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4
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Wang YQ, Dou XY, Wang HF, Wang X, Wu DC. Dendrimer-based Hydrogels with Controlled Drug Delivery Property for Tissue Adhesion. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2584-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Fan L, Wang X, Wu D. Polyhedral Oligomeric Silsesquioxanes (
POSS
)‐based Hybrid Materials: Molecular Design, Solution
Self‐Assembly
and Biomedical Applications. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000536] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Linfeng Fan
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- Department of Biomedical Engineering, Southern University of Science and Technology Shenzhen Guangdong 518055 China
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6
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Wang SW, Lin YK, Fang JY, Lee RS. Synthesis and characterization of redox and ultrasonic dual-responsive organic-inorganic amphiphilic hybrid copolymers for drug delivery. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2019.1685515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shiu-Wei Wang
- Division of Natural Science, Center of General Education, Chang Gung University, Tao-Yuan, Taiwan
| | - Yin-Ku Lin
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - Jia-You Fang
- Graduate Institute of Natural Products, Chang Gung University, Tao-Yuan, Taiwan
| | - Ren-Shen Lee
- Division of Natural Science, Center of General Education, Chang Gung University, Tao-Yuan, Taiwan
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7
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Zhao B, Yan Y, Zhang J, Chen E, Wang K, Zhao C, Zhong Y, Huang D, Cui Z, Deng D, Gu C, Chen W. Synthesis of zwitterionic chimeric polymersomes for efficient protein loading and intracellular delivery. Polym Chem 2021. [DOI: 10.1039/d1py00815c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Design and synthesis of degradable chimeric polymersomes based on zwitterionic PAC(DMA)-PCL-PMDMSA triblock copolymers for high protein loading and intracellular delivery.
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Affiliation(s)
- Bingbing Zhao
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Yuting Yan
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Junmei Zhang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Enping Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Ke Wang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Changshun Zhao
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Yinan Zhong
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Dechun Huang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Zhiqin Cui
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Dawei Deng
- Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Congying Gu
- School of Science, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
| | - Wei Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, China
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8
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Song X, Zhang X, Li T, Li Z, Chi H. Mechanically Robust Hybrid POSS Thermoplastic Polyurethanes with Enhanced Surface Hydrophobicity. Polymers (Basel) 2019; 11:E373. [PMID: 30960357 PMCID: PMC6419223 DOI: 10.3390/polym11020373] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 01/16/2023] Open
Abstract
A series of hybrid thermoplastic polyurethanes (PUs) were synthesized from bi-functional polyhedral oligomeric silsesquioxane (B-POSS) and polycaprolactone (PCL) using 1,6-hexamethylene diisocyanate (HDI) as a coupling agent for the first time. The newly synthesized hybrid materials were fully characterized in terms of structure, morphology, thermal and mechanical performance, as well as their toughening effect toward polyesters. Thermal gravimeter analysis (TGA) and differential scanning calorimetry (DSC) showed enhanced thermal stability by 76 °C higher in decomposition temperature (Td) of the POSS PUs, and 22 °C higher glass transition temperature (Tg) when compared with control PU without POSS. Static contact angle results showed a significant increment of 49.8° and 53.4° for the respective surface hydrophobicity and lipophilicity measurements. More importantly, both storage modulus (G') and loss modulus (G'') are improved in the hybrid POSS PUs and these parameters can be further adjusted by varying POSS content in the copolymer. As a biodegradable hybrid filler, the as-synthesized POSS PUs also demonstrated a remarkable effect in toughening commercial polyesters, indicating a simple yet useful strategy in developing high-performance polyester for advanced biomedical applications.
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Affiliation(s)
- Xiuhuan Song
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Xiaoxiao Zhang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Tianduo Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634, Singapore.
| | - Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
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9
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Chatterjee S, Ooya T. Hydrophobic Nature of Methacrylate-POSS in Combination with 2-(Methacryloyloxy)ethyl Phosphorylcholine for Enhanced Solubility and Controlled Release of Paclitaxel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1404-1412. [PMID: 30424607 DOI: 10.1021/acs.langmuir.8b01588] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Amphiphilic copolymers consisting of 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) and hydrophobic monomers are known as biomaterials for the administration of poorly water-soluble drugs such as paclitaxel (PTX). However, the hydrophobic monomers to be copolymerized with MPC have not been optimized for PTX solubilization and its dosage forms. Here, we show the enhanced PTX solubility by only an MPC-based amphiphilic copolymer using a polyhedral oligomeric silsesquioxane (POSS) methacrylate (MA) bearing an ethyl (C2H5) group as a vertex group. MPC was copolymerized with POSS methacrylates bearing different vertex groups of ethyl (C2H5), hexyl (C6H13), and octyl (C8H17) via radical polymerization. We found that the strong interaction between C2H5-POSS and PTX contributed to the slow release of PTX without any burst release. The C2H5-POSS-MA MPC copolymer was internalized into the cultured HeLa cells, which was confirmed by using a fluorescein-4-isothiocyanate (FITC)-labeled PTX, and the PTX-dissolved copolymer induced cell death. We anticipate that the C2H5-POSS-MA MPC copolymer is a good solubilizer bearing a controlled release function for PTX.
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Affiliation(s)
- Suchismita Chatterjee
- Graduate School of Engineering, Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai-cho , Nada-Ku, Kobe 657 8501 , Japan
| | - Tooru Ooya
- Graduate School of Engineering, Department of Chemical Science and Engineering , Kobe University , 1-1 Rokkodai-cho , Nada-Ku, Kobe 657 8501 , Japan
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10
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Grimm O, Maßmann SC, Schacher FH. Synthesis and solution behaviour of dual light- and temperature-responsive poly(triethylene glycol-co-spiropyran) copolymers and block copolymers. Polym Chem 2019. [DOI: 10.1039/c9py00458k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We herein report on the synthesis and characterization of materials featuring a dual-responsive copolymer segment consisting of photo-responsive spiropyran (SPA) and temperature-responsive triethylene glycol acrylate (TEGA).
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Affiliation(s)
- Oliver Grimm
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich-Schiller-University Jena
- D-07743 Jena
- Germany
| | - Sarina C. Maßmann
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich-Schiller-University Jena
- D-07743 Jena
- Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich-Schiller-University Jena
- D-07743 Jena
- Germany
- Jena Centre for Soft Matter (JCSM)
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11
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Mohamed MG, Kuo SW. Functional Polyimide/Polyhedral Oligomeric Silsesquioxane Nanocomposites. Polymers (Basel) 2018; 11:E26. [PMID: 30960010 PMCID: PMC6401763 DOI: 10.3390/polym11010026] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/23/2018] [Accepted: 12/23/2018] [Indexed: 01/20/2023] Open
Abstract
The preparation of hybrid nanocomposite materials derived from polyhedral oligomeric silsesquioxane (POSS) nanoparticles and polyimide (PI) has recently attracted much attention from both academia and industry, because such materials can display low water absorption, high thermal stability, good mechanical characteristics, low dielectric constant, flame retardance, chemical resistance, thermo-redox stability, surface hydrophobicity, and excellent electrical properties. Herein, we discussed the various methods that have been used to insert POSS nanoparticles into PI matrices, through covalent chemical bonding and physical blending, as well as the influence of the POSS units on the physical properties of the PIs.
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Affiliation(s)
- Mohamed Gamal Mohamed
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt.
| | - Shiao Wei Kuo
- Department of Materials and Optoelectronic Science, Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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12
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Zhang X, Tan BH, Li Z. Biodegradable polyester shape memory polymers: Recent advances in design, material properties and applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:1061-1074. [DOI: 10.1016/j.msec.2017.11.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/13/2017] [Accepted: 11/17/2017] [Indexed: 01/09/2023]
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13
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Ding D, Zhu Q. Recent advances of PLGA micro/nanoparticles for the delivery of biomacromolecular therapeutics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:1041-1060. [DOI: 10.1016/j.msec.2017.12.036] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/18/2017] [Accepted: 12/30/2017] [Indexed: 01/06/2023]
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14
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Chi H, Wang M, Xiao Y, Wang F, K S J. Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers. Molecules 2018; 23:E2481. [PMID: 30262758 PMCID: PMC6222655 DOI: 10.3390/molecules23102481] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 01/22/2023] Open
Abstract
Understanding the mechanism of molecular self-assembly to form well-organized nanostructures is essential in the field of supramolecular chemistry. Particularly, amphiphilic copolymers incorporated with polyhedral oligomeric silsesquioxanes (POSSs) have been one of the most promising materials in material science, engineering, and biomedical fields. In this review, new ideas and research works which have been carried out over the last several years in this relatively new area with a main focus on their mechanism in self-assembly and applications are discussed. In addition, insights into the unique role of POSSs in synthesis, microphase separation, and confined size were encompassed. Finally, perspectives and challenges related to the further advancement of POSS-based amphiphilics are discussed, followed by the proposed design considerations to address the challenges that we may face in the future.
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Affiliation(s)
- Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry of Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Mingyue Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry of Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Yiting Xiao
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry of Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Fuke Wang
- Polymeric Materials Department, Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03 Innovis, Singapore 138634, Singapore.
| | - Joshy K S
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India.
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15
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Li S, Wang ZY, Gao GG, Li B, Luo P, Kong YJ, Liu H, Zang SQ. Smart Transformation of a Polyhedral Oligomeric Silsesquioxane Shell Controlled by Thiolate Silver(I) Nanocluster Core in Cluster@Clusters Dendrimers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807548] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Si Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Zhao-Yang Wang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Guang-Gang Gao
- School of Materials Science and Engineering; University of Jinan; Jinan 250022 China
| | - Bing Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Peng Luo
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Yu-Jin Kong
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Hong Liu
- School of Materials Science and Engineering; University of Jinan; Jinan 250022 China
| | - Shuang-Quan Zang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
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16
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Li S, Wang ZY, Gao GG, Li B, Luo P, Kong YJ, Liu H, Zang SQ. Smart Transformation of a Polyhedral Oligomeric Silsesquioxane Shell Controlled by Thiolate Silver(I) Nanocluster Core in Cluster@Clusters Dendrimers. Angew Chem Int Ed Engl 2018; 57:12775-12779. [DOI: 10.1002/anie.201807548] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/07/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Si Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Zhao-Yang Wang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Guang-Gang Gao
- School of Materials Science and Engineering; University of Jinan; Jinan 250022 China
| | - Bing Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Peng Luo
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Yu-Jin Kong
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Hong Liu
- School of Materials Science and Engineering; University of Jinan; Jinan 250022 China
| | - Shuang-Quan Zang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 China
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17
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Liu X, Fan X, Jiang L, Loh XJ, Wu YL, Li Z. Biodegradable polyester unimolecular systems as emerging materials for therapeutic applications. J Mater Chem B 2018; 6:5488-5498. [PMID: 32254961 DOI: 10.1039/c8tb01883a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Unimolecular micelles, as a class of single-molecular micelles, are structurally stable regardless of their concentrations or alterations of the outer environment such as pH, temperature, ion strength etc. in comparison with conventional polymeric micelles. Polyester unimolecular micelles are extensively applied in bio-medical fields because of their stability, biocompatibility, biodegradability, structural-controllabilty etc. In this review, the most recent developments in polyester unimolecular micelle designs in terms of Boltorn polymer H40 core, cyclodextrin, dendrimer or dendrimer-like polymer, or polyhedral oligomeric silsesquioxane (POSS) based polyester unimolecular micelles are presented. The significance and application in biomedical fields including drug delivery, bio-imaging and theranostics are also classified in this review. Finally, the remaining challenges and future perspectives for further development of unimolecular micelles as therapeutic materials are also discussed.
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Affiliation(s)
- Xuan Liu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, P. R. China.
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18
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Li H, Niu Y. Synthesis and characterization of amphiphilic block polymer poly(ethylene glycol)-poly(propylene carbonate)-poly(ethylene glycol) for drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 89:160-165. [DOI: 10.1016/j.msec.2018.04.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 03/07/2018] [Accepted: 04/04/2018] [Indexed: 01/25/2023]
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19
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Fan X, Yang J, Loh XJ, Li Z. Polymeric Janus Nanoparticles: Recent Advances in Synthetic Strategies, Materials Properties, and Applications. Macromol Rapid Commun 2018; 40:e1800203. [PMID: 29900609 DOI: 10.1002/marc.201800203] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/17/2018] [Indexed: 12/13/2022]
Abstract
Polymeric Janus nanoparticles with two sides of incompatible chemistry have received increasing attention due to their tunable asymmetric structure and unique material characteristics. Recently, with the rapid progress in controlled polymerization combined with novel fabrication techniques, a large array of functional polymeric Janus particles are diversified with sophisticated architecture and applications. In this review, the most recently developed strategies for controlled synthesis of polymeric Janus nanoparticles with well-defined size and complex superstructures are summarized. In addition, the pros and cons of each approach in mediating the anisotropic shapes of polymeric Janus particles as well as their asymmetric spatial distribution of chemical compositions and functionalities are discussed and compared. Finally, these newly developed structural nanoparticles with specific shapes and surface functions orientated applications in different domains are also discussed, followed by the perspectives and challenges faced in the further advancement of polymeric Janus nanoparticles as high performance materials.
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Affiliation(s)
- Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Jing Yang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
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20
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Li W, Fan X, Wang X, Shang X, Wang Q, Lin J, Hu Z, Li Z. Stereocomplexed micelle formation through enantiomeric PLA-based Y-shaped copolymer for targeted drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:688-695. [PMID: 30033303 DOI: 10.1016/j.msec.2018.06.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/11/2018] [Accepted: 06/08/2018] [Indexed: 12/29/2022]
Abstract
In this study, a novel stereocomplexed micelle system was prepared from the self-assembly of enantiomeric PLA-based Y-shaped copolymers, i.e. folic acid-adamantane/β-cyclodextrin-b-[poly(D-lactide)]2 (FA-AD/CD-b-(PDLA)2) and poly(2-dimethylaminoethyl methacrylate)-b-[poly(L-lactide)]2 (PDMAEMA-b-(PLLA)2) in aqueous solution. The newly designed Y-shaped copolymer FA-AD/CD-b-(PDLA)2 was prepared by a combination of "click" reaction and host guest interaction between FA-AD and CD-b-(PDLA)2. In addition, enantiomeric Y-shaped PDMAEMA-b-(PLLA)2 copolymer was synthesized through ring-opening polymerization (ROP) of L-lactide using three-head initiator with bromo and -OH at distal ends, followed by atom transfer radical polymerization (ATRP) of DMAEMA to obtain the desired macromolecular architecture. The resultant copolymers and their intermediates were characterized by 1H nuclear magnetic resonance (1H NMR) and gel permeation chromatography (GPC) techniques. Due to the strong stereocomplexation interaction, FA-AD/CD-b-(PDLA)2 and PDMAEMA-b-(PLLA)2 mixture could self-assemble into stable mixed micelles in aqueous solution. Further, the stereocomplexed micelles exhibited excellent biocompatibility as revealed in the cytotoxicity assay. Together with the intrinsic biodegradability of PLA, it is envisioned that the stereocomplexed micelles developed in this study can be used as a promising nanocarrier for targeting drug delivery.
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Affiliation(s)
- Wenqiang Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China; The Second Affiliated Hospital of Xinxiang Medical University, Henan Key Lab of Biological Psychiatry of Xinxiang Medical University, China
| | - Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Xiaokun Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Xiaohong Shang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Qi Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Key Lab of Biological Psychiatry of Xinxiang Medical University, China
| | - Juntang Lin
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Key Lab of Biological Psychiatry of Xinxiang Medical University, China
| | - Zhiguo Hu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634, Singapore.
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21
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Grimm O, Schacher FH. Dual Stimuli-Responsive P(NIPAAm-co-SPA) Copolymers: Synthesis and Response in Solution and in Films. Polymers (Basel) 2018; 10:E645. [PMID: 30966679 PMCID: PMC6403943 DOI: 10.3390/polym10060645] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/28/2018] [Accepted: 06/04/2018] [Indexed: 12/23/2022] Open
Abstract
We present the synthesis and solution properties of dual stimuli-responsive poly(N-isopropylacrylamide-co-spiropyran acrylate) (P(NIPAAm-co-SPA)) copolymers of varying composition prepared via nitroxide-mediated copolymerization. The resulting copolymers feature molar masses from 40,000 to 100,000 g/mol according to static light scattering and an SPA content of up to 5.3%. The latter was determined by ¹H NMR spectroscopy and UV⁻Vis spectroscopy. These materials exhibit reversible response upon irradiation in polymeric films for a minimum of three cycles; their response in solution to both light and temperature was also investigated in an aqueous TRIS buffer (pH 8). Irradiation was carried out using LED setups with wavelengths of 365 and 590 nm. In aqueous solution, a custom-made setup using a fiber-coupled 200 W Hg(Xe) lamp with 340 and 540 nm filters was used and additional heating of the copolymer solutions during irradiation allowed to study influence of the presence of either the spiropyran or merocyanine form on the cloud point temperature. Hereby, it was found that increasing the SPA content leads to a more pronounced difference between both states and decreasing cloud points in general.
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Affiliation(s)
- Oliver Grimm
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraße 10, D-07743 Jena, Germany.
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraße 10, D-07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany.
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22
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Yang J, Loh XJ, Tan BH, Li Z. pH-Responsive Poly(dimethylsiloxane) Copolymer Decorated Magnetic Nanoparticles for Remotely Controlled Oil-in-Water Nanoemulsion Separation. Macromol Rapid Commun 2018; 40:e1800013. [DOI: 10.1002/marc.201800013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/28/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Jing Yang
- Institute of Materials Research and Engineering; Agency for Science; Technology and Research (A*STAR); 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering; Agency for Science; Technology and Research (A*STAR); 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Singapore
| | - Beng Hoon Tan
- Institute of Materials Research and Engineering; Agency for Science; Technology and Research (A*STAR); 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering; Agency for Science; Technology and Research (A*STAR); 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Singapore
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23
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Cheng H, Fan X, Wang X, Ye E, Loh XJ, Li Z, Wu YL. Hierarchically Self-Assembled Supramolecular Host-Guest Delivery System for Drug Resistant Cancer Therapy. Biomacromolecules 2018; 19:1926-1938. [PMID: 29350902 DOI: 10.1021/acs.biomac.7b01693] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this report, a new star-like copolymer β-CD- g-(PNIPAAm- b-POEGA) x, consisting of a β-CD core, grafted with temperature-responsive poly( N-isopropylacrylamide) (PNIPAAm) and biocompatible poly(oligo(ethylene glycol) acrylate) (POEGA) in a block copolymer of the arms, was used to deliver chemotherapeutics to drug resistant cancer cells and tumors. The first step of the self-assembly process involves the encapsulation of chemotherapeutics through host-guest inclusion complexation between the β-cyclodextrin cavity and the anticancer drug. Next, the chain interaction of the PNIPAAm segment at elevated temperature drives the drug-loaded β-CD- g-(PNIPAAm- b-POEGA) x/PTX inclusion complex to hierarchically self-assemble into nanosized supramolecular assemblies at 37 °C, whereas the presence of poly(ethylene glycol) (PEG) chains in the distal end of the star-like copolymer arms impart enhanced stability to the self-assembled structure. More interestingly, this supramolecular host-guest nanocomplex promoted the enhanced cellular uptake of chemotherapeutics in MDR-1 up-regulated drug resistant cancer cells and exhibited high therapeutic efficacy for suppressing drug resistant tumor growth in an in vivo mouse model, due to the increased stability, improvement in aqueous solubility, enhanced cellular uptake, and partial membrane pump impairment by taking the advantage of PEGylation and supramolecular complex between this star-like copolymer and chemotherapeutics. This work signifies that temperature-sensitive PEGylated supramolecular nanocarriers with good biocompatibility are effective in combating MDR-1 mediated drug resistance in both in vitro and in vivo models, which is of significant importance for the advanced drug delivery platform designed to combat drug resistant cancer.
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Affiliation(s)
- Hongwei Cheng
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences , Xiamen University , Xiamen 361102 , China
| | - Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , 453007 , China
| | - Xiaoyuan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences , Xiamen University , Xiamen 361102 , China
| | - Enyi Ye
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) ; 2 Fusionopolis Way , Innovis, #08-03, Singapore 138634 , Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) ; 2 Fusionopolis Way , Innovis, #08-03, Singapore 138634 , Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) ; 2 Fusionopolis Way , Innovis, #08-03, Singapore 138634 , Singapore
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences , Xiamen University , Xiamen 361102 , China
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24
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Ye C, Chi H. A review of recent progress in drug and protein encapsulation: Approaches, applications and challenges. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 83:233-246. [PMID: 29208283 DOI: 10.1016/j.msec.2017.10.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 10/18/2022]
Abstract
Many drugs and proteins formulated for treatment of various diseases are not fully utilised due to environmentally problems such as degradation by enzymes or it being hydrophobic. To counter this problem, the drug and protein of interest are encapsulated by synthetic polymers where they are protected from the environment. This allows the molecule to reach its target safely and maximise its function. In this paper, we will discuss about the different techniques of encapsulation that includes emulsion evaporation, self-emulsifying drug delivery system and supercritical fluid. This will be followed by the drugs and proteins that are commonly encapsulated to counter life-threatening diseases such as cancer and diabetes. A novel method using foam was proposed and will be briefly discussed as it can play a huge role in future developments.
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Affiliation(s)
- Chen Ye
- School of Chemistry and Chemical Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, China.
| | - Hong Chi
- Shandong Provincial Key Laboratory of Fine Chemicals, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, Shandong, China
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25
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Yang DP, Oo MNNL, Deen GR, Li Z, Loh XJ. Nano-Star-Shaped Polymers for Drug Delivery Applications. Macromol Rapid Commun 2017; 38. [PMID: 28895248 DOI: 10.1002/marc.201700410] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 06/28/2017] [Indexed: 12/19/2022]
Abstract
With the advancement of polymer engineering, complex star-shaped polymer architectures can be synthesized with ease, bringing about a host of unique properties and applications. The polymer arms can be functionalized with different chemical groups to fine-tune the response behavior or be endowed with targeting ligands or stimuli responsive moieties to control its physicochemical behavior and self-organization in solution. Rheological properties of these solutions can be modulated, which also facilitates the control of the diffusion of the drug from these star-based nanocarriers. However, these star-shaped polymers designed for drug delivery are still in a very early stage of development. Due to the sheer diversity of macromolecules that can take on the star architectures and the various combinations of functional groups that can be cross-linked together, there remain many structure-property relationships which have yet to be fully established. This review aims to provide an introductory perspective on the basic synthetic methods of star-shaped polymers, the properties which can be controlled by the unique architecture, and also recent advances in drug delivery applications related to these star candidates.
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Affiliation(s)
- Da-Peng Yang
- College of Chemical Engineering & Materials Science, Quanzhou Normal University, Quanzhou, 362000, China
| | - Ma Nwe Nwe Linn Oo
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive Singapore, Singapore, 637459, Singapore
| | - Gulam Roshan Deen
- Soft Materials Laboratory, Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, 637459, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore.,Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore
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26
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Ding C, Li Z. A review of drug release mechanisms from nanocarrier systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1440-1453. [DOI: 10.1016/j.msec.2017.03.130] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/15/2017] [Accepted: 03/17/2017] [Indexed: 12/16/2022]
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27
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Xia Y, Ding S, Liu Y, Qi Z. Facile Synthesis and Self-Assembly of Amphiphilic Polyether-Octafunctionalized Polyhedral Oligomeric Silsesquioxane via Thiol-Ene Click Reaction. Polymers (Basel) 2017; 9:E251. [PMID: 30970928 PMCID: PMC6432379 DOI: 10.3390/polym9070251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/12/2017] [Accepted: 06/26/2017] [Indexed: 11/17/2022] Open
Abstract
We demonstrated here a facile and efficient synthesis of polyhedral oligomeric silsesquioxane-based amphiphilic polymer by thiol-ene click chemistry. The properties of polyhedral oligomeric silsesquioxane (POSS)⁻PEG amphiphilic polymers were studied in detail by a combination of ¹H NMR, 13C NMR, 29Si NMR FT-IR, GPC, and TG analysis. The newly-designed thiol-ene protocol obtains only anti-Markovnikov addition POSS-based amphiphilic polymers when compared with platinum-catalysed hydrosilylation method. The critical micelle concentration (CMC) of the resulting polymers are in the range of 0.011 to 0.050 mg/mL, and dynamic light scattering (DLS) results revealed that the obtained amphiphilic polymers can self-assemble into nanoparticles in aqueous solutions with a bimodal (two peaks) distribution. Furthermore, the specific polymer showed obvious thermo-sensitive behaviour at 45.5 °C.
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Affiliation(s)
- Yong Xia
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China.
| | - Sha Ding
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yuejun Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China.
| | - Zhengjian Qi
- College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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28
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Zhang P, Zhang Z, Jiang X, Rui L, Gao Y, Zhang W. Unimolecular micelles from POSS-based star-shaped block copolymers for photodynamic therapy. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Thermo-Responsive Poly(N-Isopropylacrylamide)-Cellulose Nanocrystals Hybrid Hydrogels for Wound Dressing. Polymers (Basel) 2017; 9:polym9040119. [PMID: 30970798 PMCID: PMC6432186 DOI: 10.3390/polym9040119] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/16/2017] [Accepted: 03/21/2017] [Indexed: 11/28/2022] Open
Abstract
Thermo-responsive hydrogels containing poly(N-isopropylacrylamide) (PNIPAAm), reinforced both with covalent and non-covalent interactions with cellulose nanocrystals (CNC), were synthesized via free-radical polymerization in the absence of any additional cross-linkers. The properties of PNIPAAm-CNC hybrid hydrogels were dependent on the amounts of incorporated CNC. The thermal stability of the hydrogels decreased with increasing CNC content. The rheological measurement indicated that the elastic and viscous moduli of hydrogels increased with the higher amounts of CNC addition, representing stronger mechanical properties of the hydrogels. Moreover, the hydrogel injection also supported the hypothesis that CNC reinforced the hydrogels; the increased CNC content exhibited higher structural integrity upon injection. The PNIPAAm-CNC hybrid hydrogels exhibited clear thermo-responsive behavior; the volume phase transition temperature (VPTT) was in the range of 36 to 39 °C, which is close to normal human body temperature. For wound dressing purposes, metronidazole, an antibiotic and antiprotozoal often used for skin infections, was used as a target drug to study drug-loading and the release properties of the hydrogels. The hydrogels showed a good drug-loading capacity at room temperature and a burst drug release, which was followed by slow and sustained release at 37 °C. These results suggested that newly developed drugs containing injectable hydrogels are promising materials for wound dressing.
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30
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Functionalization of 2D transition metal dichalcogenides for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1095-1106. [DOI: 10.1016/j.msec.2016.03.039] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 02/04/2016] [Accepted: 03/14/2016] [Indexed: 12/18/2022]
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31
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Fan X, Chung JY, Lim YX, Li Z, Loh XJ. Review of Adaptive Programmable Materials and Their Bioapplications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33351-33370. [PMID: 27960431 DOI: 10.1021/acsami.6b09110] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adaptive programmable materials have attracted increasing attention due to their high functionality, autonomous behavior, encapsulation, and site-specific confinement capabilities in various applications. Compared to conventional materials, adaptive programmable materials possess unique single-material architecture that can maintain, respond, and change their shapes and dimensions when they are subjected to surrounding environment changes, such as alternation in temperature, pH, and ionic strength. In this review, the most-recent advances in the design strategies of adaptive programmable materials are presented with respect to different types of architectural polymers, including stimuli-responsive polymers and shape-memory polymers. The diverse functions of these sophisticated materials and their significance in therapeutic agent delivery systems are also summarized in this review. Finally, the challenges for facile fabrication of these materials and future prospective are also discussed.
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Affiliation(s)
- Xiaoshan Fan
- School of Chemistry and Chemical Engineering, Henan Normal University , Henan 453007, China
| | - Jing Yang Chung
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore
| | - Yong Xiang Lim
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE), A*STAR , 2 Fusionopolis Way, Innovis, no. 08-03, 138634 Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR , 2 Fusionopolis Way, Innovis, no. 08-03, 138634 Singapore
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore
- Singapore Eye Research Institute , 11 Third Hospital Avenue, 168751 Singapore
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32
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Zhang Z, Xue Y, Zhang P, Müller AHE, Zhang W. Hollow Polymeric Capsules from POSS-Based Block Copolymer for Photodynamic Therapy. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02414] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhenghe Zhang
- Shanghai
Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yudong Xue
- Shanghai
Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Pengcheng Zhang
- Shanghai
Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Axel H. E. Müller
- Institut
für Organische Chemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - Weian Zhang
- Shanghai
Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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33
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Han Y, Liu S, Mao H, Tian L, Ning W. Synthesis of Novel Temperature- and pH-Sensitive ABA Triblock Copolymers P(DEAEMA-co-MEO₂MA-co-OEGMA)-b-PEG-b-P(DEAEMA-co-MEO₂MA-co-OEGMA): Micellization, Sol⁻Gel Transitions, and Sustained BSA Release. Polymers (Basel) 2016; 8:E367. [PMID: 30974672 PMCID: PMC6431942 DOI: 10.3390/polym8110367] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/01/2016] [Accepted: 10/07/2016] [Indexed: 12/01/2022] Open
Abstract
Novel temperature- and pH-responsive ABA-type triblock copolymers, P(DEAEMA-co-MEO₂MA-co-OEGMA)-b-PEG-b-P(DEAEMA-co-MEO₂MA-co-OEGMA), composed of a poly(ethylene glycol) (PEG) middle block and temperature- and pH-sensitive outer blocks, were synthesized by atom transfer radical polymerization (ATRP). The composition and structure of the copolymer were characterized by ¹H NMR and gel permeation chromatography (GPC). The temperature- and pH-sensitivity, micellization, and the sol⁻gel transitions of the triblock copolymers in aqueous solutions were studied using transmittance measurements, surface tension, viscosity, fluorescence probe technique, dynamic light scattering (DLS), zeta-potential measurements, and transmission electron microscopy (TEM). The lower critical solution temperature (LCST) of the triblock copolymer, which contains a small amount of a weak base group, (N,N-diethylamino) ethyl methacrylate (DEAEMA), can be tuned precisely and reversibly by changing the solution pH. When the copolymer concentration was sufficiently high, increasing temperature resulted in the free-flowing solution transformation into a micellar gel. The sol-to-gel transition temperature (Tsol⁻gel) in aqueous solution will continue to decrease as solution concentration increases.
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Affiliation(s)
- Yanan Han
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Shouxin Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Hongguang Mao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Lei Tian
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Wenyan Ning
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
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34
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Li Z, Tan BH, Lin T, He C. Recent advances in stereocomplexation of enantiomeric PLA-based copolymers and applications. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.05.003] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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35
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Dou Q, Abdul Karim A, Loh XJ. Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS. Polymers (Basel) 2016; 8:E341. [PMID: 30974616 PMCID: PMC6432308 DOI: 10.3390/polym8090341] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/07/2016] [Accepted: 09/08/2016] [Indexed: 12/16/2022] Open
Abstract
Pluronic F127 exhibits thermogelling behaviour at 20⁻30 °C via a micelle packing mechanism. Disruption of the micelle packing increases the sol-gel temperature, but results in the decrease of modulus. Herein, we reported a method to modify F127 with polyhedral oligosilsesquioxane (POSS) to impart a higher gelling temperature without yielding the property and strength of the thermogel. The thermal degradation temperature was enhanced to 15 °C after POSS incorporation and the gelling temperature shifted 10 °C higher, without sacrificing the modulus of the gel. Rheological studies supported the claim that the gel property was reinforced after POSS incorporation. F127-POSS copolymer matrix stored more energy from POSS reinforcement, which saw larger Lissajous curve areas before the collapse of the microstructure for the same amount of stress applied. These results indicated that modification with POSS would raise the sol-gel transition temperature without sacrificing the modulus of the gel.
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Affiliation(s)
- Qingqing Dou
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 117602, Singapore.
| | - Anis Abdul Karim
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 117602, Singapore.
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 117602, Singapore.
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore.
- Singapore Eye Research Institute, Singapore 168751, Singapore.
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Li Z, Ye E, Lakshminarayanan R, Loh XJ. Recent Advances of Using Hybrid Nanocarriers in Remotely Controlled Therapeutic Delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4782-4806. [PMID: 27482950 DOI: 10.1002/smll.201601129] [Citation(s) in RCA: 202] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 05/27/2016] [Indexed: 06/06/2023]
Abstract
The development of hybrid biomaterials has been attracting great attention in the design of materials for biomedicine. The nanosized level of inorganic and organic or even bioactive components can be combined into a single material by this approach, which has created entirely new advanced compositions with truly unique properties for drug delivery. The recent advances in using hybrid nanovehicles as remotely controlled therapeutic delivery carriers are summarized with respect to different nanostructures, including hybrid host-guest nanoconjugates, micelles, nanogels, core-shell nanoparticles, liposomes, mesoporous silica, and hollow nanoconstructions. In addition, the controlled release of guest molecules from these hybrid nanovehicles in response to various remote stimuli such as alternating magnetic field, near infrared, or ultrasound triggers is further summarized to introduce the different mechanisms of remotely triggered release behavior. Through proper chemical functionalization, the hybrid nanovehicle system can be further endowed with many new properties toward specific biomedical applications.
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Affiliation(s)
- Zibiao Li
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way. Innovis, #08-03, Singapore, 138634, Singapore
| | - Enyi Ye
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way. Innovis, #08-03, Singapore, 138634, Singapore
| | | | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way. Innovis, #08-03, Singapore, 138634, Singapore.
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore.
- Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore, 168751, Singapore.
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Yu H, Lei Y, Yu X, Wang X, Liu T, Luo S. Solid-state polyetherimide (PEI) nanofoams: the influence of the compatibility of nucleation agent on the cellular morphology. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1009-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Karim AA, Dou Q, Li Z, Loh XJ. Emerging Supramolecular Therapeutic Carriers Based on Host-Guest Interactions. Chem Asian J 2016; 11:1300-21. [PMID: 26833861 DOI: 10.1002/asia.201501434] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 01/23/2016] [Indexed: 02/02/2023]
Abstract
Recent advances in host-guest chemistry have significantly influenced the construction of supramolecular soft biomaterials. The highly selective and non-covalent interactions provide vast possibilities of manipulating supramolecular self-assemblies at the molecular level, allowing a rational design to control the sizes and morphologies of the resultant objects as carrier vehicles in a delivery system. In this Focus Review, the most recent developments of supramolecular self-assemblies through host-guest inclusion, including nanoparticles, micelles, vesicles, hydrogels, and various stimuli-responsive morphology transition materials are presented. These sophisticated materials with diverse functions, oriented towards therapeutic agent delivery, are further summarized into several active domains in the areas of drug delivery, gene delivery, co-delivery and site-specific targeting deliveries. Finally, the possible strategies for future design of multifunctional delivery carriers by combining host-guest chemistry with biological interface science are proposed.
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Affiliation(s)
- Anis Abdul Karim
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 08-03, Singapore, 138634, Singapore
| | - Qingqing Dou
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 08-03, Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 08-03, Singapore, 138634, Singapore.
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, 08-03, Singapore, 138634, Singapore. .,Department of Materials Science and Engineering, National University of Singapore, Singapore, 117574, Singapore. .,Singapore Eye Research Institute, 20 College Road, Singapore, 169856, Singapore.
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Li Z, Yuan D, Jin G, Tan BH, He C. Facile Layer-by-Layer Self-Assembly toward Enantiomeric Poly(lactide) Stereocomplex Coated Magnetite Nanocarrier for Highly Tunable Drug Deliveries. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1842-53. [PMID: 26717323 DOI: 10.1021/acsami.5b09822] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A highly tunable nanoparticle (NP) system with multifunctionalities was developed as drug nanocarrier via a facile layer-by-layer (LbL) stereocomplex (SC) self-assembly of enantiomeric poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) in solution using silica-coated magnetite (Fe3O4@SiO2) as template. The poly(lactide) (PLA) SC coated NPs (Fe3O4@SiO2@-SC) were further endowed with different stimuli-responsiveness by controlling the outermost layer coatings with respective pH-sensitive poly(lactic acid)-poly(2-dimethylaminoethyl methacrylate) (PLA-D) and temperature-sensitive poly(lactic acid)-poly(N-isopropylacrylamide) (PLA-N) diblock copolymers to yield Fe3O4@SiO2@SC-D and Fe3O4@SiO2@SC-N NPs, respectively, while the superparamagnetic properties of Fe3O4 were maintained. TEM images show a clearly resolved core-shell structure with a silica layer and sequential PLA SC co/polymer coating layers in the respective NPs. The well-designed NPs possess a size distribution in a range of 220-270 nm and high magnetization of 70.8-72.1 emu/g [Fe3O4]. More importantly, a drug release study from the as-constructed stimuli-responsive NPs exhibited sustained release profiles and the rates of release can be tuned by variation of external environments. Further cytotoxicity and cell culture studies revealed that PLA SC coated NPs possessed good cell biocompatibility and the doxorubicin (DOX)-loaded NPs showed enhanced drug delivery efficiency toward MCF-7 cancer cells. Together with the strong magnetic sensitivity, the developed hybrid NPs demonstrate a great potential of control over the drug release at a targeted site. The developed coating method can be further optimized to finely tune the nanocarrier size and operating range of pHs and temperatures for in vivo applications.
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Affiliation(s)
- Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| | - Du Yuan
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
| | - Guorui Jin
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| | - Beng H Tan
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
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Hwang JY, Li Z, Loh XJ. Small molecule therapeutic-loaded liposomes as therapeutic carriers: from development to clinical applications. RSC Adv 2016. [DOI: 10.1039/c6ra09854a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In this review, various methods and mechanisms for encapsulation of small therapeutic molecules in liposomes for targeted delivery and triggered release, as well as their potential in the clinical uses, are discussed.
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Affiliation(s)
- Jae Yoon Hwang
- Department of Materials Science and Engineering
- National University of Singapore
- Singapore 117576
- Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE)
- Singapore 117602
- Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE)
- Singapore 117602
- Singapore
- Department of Materials Science and Engineering
- National University of Singapore
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Fan X, Li Z, Loh XJ. Recent development of unimolecular micelles as functional materials and applications. Polym Chem 2016. [DOI: 10.1039/c6py01006g] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Unimolecular micelles have high functionalities, encapsulation capabilities and site specific confinement abilities in various applications.
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Affiliation(s)
- Xiaoshan Fan
- School of Chemistry and Chemical Engineering
- Henan Normal University
- China
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE)
- A*STAR
- Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE)
- A*STAR
- Singapore
- Department of Materials Science and Engineering
- National University of Singapore
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Cosgrove T, Swier S, Schmidt RG, Muangpil S, Espidel Y, Griffiths PC, Prescott SW. Impact of End-Tethered Polyhedral Nanoparticles on the Mobility of Poly(dimethylsiloxane). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8469-8477. [PMID: 26131846 DOI: 10.1021/acs.langmuir.5b01211] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of dumbbell-shaped nanocomposite materials of poly(dimethylsiloxanes) (PDMSs) and polyhedral oligomeric silsesquioxanes (POSSs) were synthesized through hydrosilylation reactions of allyl- and vinyl-POSS and hydride-terminated PDMS. The chemical structures of the dumbbell-shaped materials, so-called POSS-PDMS-POSS triblocks, were characterized by (1)H NMR and FT-IR spectroscopy. The molecular weights of the triblock polymers were determined by gel permeation chromatography (GPC). Their size was analyzed by small-angle neutron scattering (SANS) and pulsed-field gradient stimulated echo (PFG STE) NMR experiments. The impact of POSS on the molecular mobility of the PDMS middle chain was observed by using (1)H spin-spin (T2) relaxation NMR. In contrast to the PDMS melts, the triblocks showed an increase in mobility with increasing molecular weight over the range studied due to the reduced relative concentration of constraints imposed by the end-tethered nanoparticles. The triblock systems were used to compare the impact of tethered nanoparticles on the mobility of the linear component compared to the mobility of the polymer in conventional blended nanocomposites. The tethered nanoparticles were found to provide more reinforcement than physically dispersed particles especially at high molecular weights (low particle concentration). The physical blends showed an apparent percolation threshold behavior.
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Affiliation(s)
- Terence Cosgrove
- †School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Steven Swier
- ‡Dow Corning Corporation, Midland, Michigan 48686-0994, United States
| | - Randall G Schmidt
- ‡Dow Corning Corporation, Midland, Michigan 48686-0994, United States
| | - Sairoong Muangpil
- §Program in Chemistry, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand
| | - Youssef Espidel
- †School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Peter C Griffiths
- ∥The School of Science, University of Greenwich, Medway Campus, Central Avenue, Chatham Maritime, Kent ME4 4TB, U.K
| | - Stuart W Prescott
- ⊥School of Chemical Engineering, UNSW Australia, UNSW Sydney, Sydney NSW 2052, Australia
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Jiang S, Poh YZ, Loh XJ. POSS-based hybrid cationic copolymers with low aggregation potential for efficient gene delivery. RSC Adv 2015. [DOI: 10.1039/c5ra12580d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
This work describes the synthesis and application of POSS-based copolymers with low aggregation potential for efficient gene delivery.
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Affiliation(s)
- Shan Jiang
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 117602
- College of Chemistry
- Jilin University
| | - Ying Zhou Poh
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 117602
| | - Xian Jun Loh
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- Singapore 117602
- Department of Materials Science and Engineering
- National University of Singapore
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Bandyopadhyay P, Banerjee S. Synthesis, Characterization and Gas Transport Properties of Polyamide-Tethered Polyhedral Oligomeric Silsesquioxane (POSS) Nanocomposites. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503475k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Susanta Banerjee
- Materials
Science Centre, Indian Institute of Technology, Kharagpur 721302, India
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