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Mehta P, Sharma M, Devi M. Hydrogels: An overview of its classifications, properties, and applications. J Mech Behav Biomed Mater 2023; 147:106145. [PMID: 37797557 DOI: 10.1016/j.jmbbm.2023.106145] [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] [Received: 08/17/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
The review paper starts with the introduction to hydrogels along with broad literature survey covering different modes of synthesis including high energy radiation methods. After that, paper covered broad classification of the hydrogels depending upon the basis of their source of origin, method of synthesis, type of cross-linking present and ionic charges on bound groups. Another advanced category response triggered hydrogels, which includes pH, temperature, electro, and light and substrate responsive hydrogels was also studied. Presented paper summarises chemical structure, properties, and synthesis of different kinds of hydrogels. Main focus was given to the preparation super absorbents such as: Semi-interpenetrating networks (semi-IPNs), Interpenetrating networks (IPNs) and cross-linked binary graft copolymers (BGCPs). The weak mechanical properties and easy degradation limit the uses of bio-based -hydrogels in biomedical field. Their properties can be improved through different chemical and physical methods. These methods were also discussed in the current research paper. Also, it includes development of hydrogels as controlled drug delivery devices, as implants and biomaterials to replace malfunctioned body parts along with their use in several other applications listed in the literature. Literature survey on the application of hydrogels in different fields like biomedical, nano-biotechnology, tissue engineering, drug delivery and agriculture was also carried out.
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Affiliation(s)
- Preeti Mehta
- Department of Applied Sciences, CEC-Chandigarh Group of Colleges, Landran, Mohali, 140307, Punjab, India.
| | - Monika Sharma
- Department of Applied Sciences, CEC-Chandigarh Group of Colleges, Landran, Mohali, 140307, Punjab, India.
| | - Meena Devi
- Department of Applied Sciences, CEC-Chandigarh Group of Colleges, Landran, Mohali, 140307, Punjab, India.
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2
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Heydari P, Varshosaz J, Kharaziha M, Javanmard SH. Antibacterial and pH-sensitive methacrylate poly-L-Arginine/poly (β-amino ester) polymer for soft tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2023; 34:16. [PMID: 37036618 PMCID: PMC10085925 DOI: 10.1007/s10856-023-06720-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 03/14/2023] [Indexed: 05/03/2023]
Abstract
During the last decade, pH-sensitive biomaterials containing antibacterial agents have grown exponentially in soft tissue engineering. The aim of this study is to synthesize a biodegradable pH sensitive and antibacterial hydrogel with adjustable mechanical and physical properties for soft tissue engineering. This biodegradable copolymer hydrogel was made of Poly-L-Arginine methacrylate (Poly-L-ArgMA) and different poly (β- amino ester) (PβAE) polymers. PβAE was prepared with four different diacrylate/diamine monomers including; 1.1:1 (PβAE1), 1.5:1 (PβAE1.5), 2:1 (PβAE2), and 3:1 (PβAE3), which was UV cross-linked using dimethoxy phenyl-acetophenone agent. These PβAE were then used for preparation of Poly-L-ArgMA/PβAE polymers and revealed a tunable swelling ratio, depending on the pH conditions. Noticeably, the swelling ratio increased by 1.5 times when the pH decreased from 7.4 to 5.6 in the Poly-L-ArgMA/PβAE1.5 sample. Also, the controllable degradation rate and different mechanical properties were obtained, depending on the PβAE monomer ratio. Noticeably, the tensile strength of the PβAE hydrogel increased from 0.10 ± 0.04 MPa to 2.42 ± 0.3 MPa, when the acrylate/diamine monomer molar ratio increased from 1.1:1 to 3:1. In addition, Poly-L-ArgMA/PβAE samples significantly improved L929 cell viability, attachment and proliferation. Poly-L-ArgMA also enhanced the antibacterial activities of PβAE against both Escherichia coli (~5.1 times) and Staphylococcus aureus (~2.7 times). In summary, the antibacterial and pH-sensitive Poly-L-ArgMA/PβAE1.5 with suitable mechanical, degradation and biological properties could be an appropriate candidate for soft tissue engineering, specifically wound healing applications.
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Affiliation(s)
- Parisa Heydari
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
- Applied Physiology Research Center, Isfahan, Iran
| | - Jaleh Varshosaz
- Novel Drug Delivery Systems Research Center, Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Science, Isfahan, Iran.
| | - Mahshid Kharaziha
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
| | - Shaghayegh Haghjooy Javanmard
- Applied Physiology Research Center, Isfahan, Iran
- Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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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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O'Donnell A, Salimi S, Hart L, Babra T, Greenland B, Hayes W. Applications of supramolecular polymer networks. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Iqbal S, Zhao Z. Poly (β amino esters) copolymers: Novel potential vectors for delivery of genes and related therapeutics. Int J Pharm 2022; 611:121289. [PMID: 34775041 DOI: 10.1016/j.ijpharm.2021.121289] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/26/2021] [Accepted: 11/08/2021] [Indexed: 12/21/2022]
Abstract
The unique properties of polymers have performed an essential contribution to the drug delivery system by providing an outstanding platform for the delivery of macromolecules and genes. However, the block copolymers have been the subject of many recently published works whose results have demonstrated excellent performance in drug targeting. Poly(β-amino esters) (PβAEs) copolymers are the synthetic cationic polymers that are tailored by chemically joining PβAEs with other additives to demonstrate extraordinary efficiency in designing pre-defined and pre-programmed nanostructures, site-specific delivery, andovercoming the distinct cellular barriers. Different compositional and structural libraries could be generated by combinatorial chemistry and by the addition of various novel functional additives that fulfill the multiple requirements of targeted delivery. These intriguing attributes allow PβAE-copolymers to have customized therapeutic functions such as excellent encapsulation capacity, high stability, and stimuli-responsive release. Here, we give an overview of PβAE copolymers-based formulations along with focusing on most notable improvements such as structural modifications, bio-conjugations, and stimuli-responsive approaches, for safe and effective nucleic acids delivery.
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Affiliation(s)
- Sajid Iqbal
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Zhongxi Zhao
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China; Key University Laboratory of Pharmaceutics & Drug Delivery Systems of Shandong Province, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China; Pediatric Pharmaceutical Engineering Laboratory of Shandong Province, Shandong Dyne Marine Biopharmaceutical Company Limited, Rongcheng, Shandong 264300, PR China; Chemical Immunopharmaceutical Engineering Laboratory of Shandong Province, Shandong Xili Pharmaceutical Company Limited, Heze, Shandong 274300, PR China.
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Li J, Wang Y, Xu C, Yu Q, Wang X, Xie H, Tian L, Qiu Y, Guo R, Lu Z, Li M, He Q. Rapid pH-responsive self-disintegrating nanoassemblies balance tumor accumulation and penetration for enhanced anti-breast cancer therapy. Acta Biomater 2021; 134:546-558. [PMID: 33882357 DOI: 10.1016/j.actbio.2021.04.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 04/06/2021] [Accepted: 04/12/2021] [Indexed: 01/08/2023]
Abstract
The dilemma of tumor accumulation and deep penetration has always been a barrier in antitumor therapy. Stimuli-responsive size changeable drug delivery systems provide possible solutions. Nevertheless, the low size-shrinkage efficiency limited the antitumor effects. In this study, an instant pH-responsive size shrinkable nanoassemblies named self-aggregated DOX@HA-CD (SA-DOX@HA-CD) was formulated using small-sized hyaluronic acid modified carbon dots (HA-CD) as monomers, which could self-aggregate into raspberry-like structure via hydrophobicity force in neutral pH and rapidly disassemble into shotgun-like DOX-loaded CD monomer in simulated tumor microenvironment (pH 6.5), owing to the transformation in electrical charge and hydrophobicity/hydrophilicity of this system. The transmission electron microscopy showed that the clustered SA-DOX@HA-CD had a diameter of ~150 nm, and thoroughly disassembled into ~30 nm nanoparticles in response to acidic environment. The disassemble efficiency was approximately 100%. Attributed to this property, SA-DOX@HA-CD led to enhanced cellular internalization and accumulation in 4T1 cells in simulated tumor microenvironment, as well as deep tumor penetration in 3D tumor spheroid model. Besides, the imine bond between DOX and HA-CD endowed DOX with pH-responsive release profile in the acidic lysosome environment. Furthermore, in the orthotopic 4T1 tumor-bearing mouse model, SA-DOX@HA-CD demonstrated higher tumor accumulation than non-aggregated DOX-HA-CD. Meanwhile, in response to the acid tumor microenvironment, the dissociated DOX-HA achieved deep tumor penetration, which consequently resulted in 2.5-fold higher antitumor efficiency. The formulation of self-aggregated SA-DOX@HA-CD provides a simple and effective alternative to prepare pH-responsive size-shrinkable nanodrug delivery systems. STATEMENT OF SIGNIFICANCE: The heterogeneity of tumor vasculature and the high tumor interstitial pressure lead to the barriers in tumor accumulation and deep penetration, which calls for opposite properties (e.g. size) of drug delivery systems. To address this dilemma, various size changeable nanoparticles have been developed utilizing special features of tumor microenvironment, such as pH, enzyme and reactive oxygen species. Nevertheless, the current strategies face the problems of incomplete hydrolysis of chemical bonds or insufficient enzyme degradation, which result in only partial size shrinkage, hindering the tumor deep penetration effects. Here we developed a self-assembled nanocluster, which could respond to acidic pH rapidly and thoroughly disassemble into small nanodots due to the alteration of hydrophobicity/hydrophilicity/charge, leading to approximately 100% dissociation. This strategy provides a new concept for design of size changeable drug delivery systems.
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Affiliation(s)
- Jianping Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Yashi Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Chaoqun Xu
- Sichuan Academy of Chinese Medicine Science, Chengdu, 610041, People's Republic of China
| | - Qianwen Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Xuhui Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Hanbing Xie
- Department of Obstetrics and Gynecology, West China Second University Hospital of Sichuan University and the Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, 610064, People's Republic of China
| | - Lifeng Tian
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Yue Qiu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Rong Guo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Zhengze Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China
| | - Man Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China.
| | - Qin He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China.
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Iqbal S, Qu Y, Dong Z, Zhao J, Rauf Khan A, Rehman S, Zhao Z. Poly (β‐amino esters) based potential drug delivery and targeting polymer; an overview and perspectives (review). Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Tran HD, Park KD, Ching YC, Huynh C, Nguyen DH. A comprehensive review on polymeric hydrogel and its composite: Matrices of choice for bone and cartilage tissue engineering. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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9
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Stability and acidic pH-mediated leakage of guest molecules from self-assembly of poly(amidoamine)-graft-alkyl copolymers. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121894] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pinnaratip R, Bhuiyan MSA, Meyers K, Rajachar RM, Lee BP. Multifunctional Biomedical Adhesives. Adv Healthc Mater 2019; 8:e1801568. [PMID: 30945459 PMCID: PMC6636851 DOI: 10.1002/adhm.201801568] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/07/2019] [Indexed: 12/21/2022]
Abstract
Currently available biomedical adhesives are mainly engineered to have one function (i.e., providing mechanical support for the repaired tissue). To improve the performance of existing bioadhesives and broaden their applications in medicine, numerous multifunctional bioadhesives are reported in the literature. These adhesives can be categorized as passive or active by design. Passive multifunctional bioadhesives contain inherent compositions and structural designs that can carry out additional functions without added external influences. These adhesives exhibit new functionalities such as antimicrobial properties, self-healing abilities, the ability to promote cellular ingrowth, and the ability to be reshaped. Conversely, active multifunctional bioadhesives respond to environmental changes (e.g., pH, temperature, electricity, light, and biomolecule concentration), which initiate a change in the adhesive to release encapsulated drugs or to activate or deactivate the bioadhesive for interfacial binding. This review article highlights recent advances in multifunctional bioadhesives.
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Affiliation(s)
- Rattapol Pinnaratip
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931
| | - Md. Saleh Akram Bhuiyan
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931
| | - Kaylee Meyers
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931
| | - Rupak M. Rajachar
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931
| | - Bruce P. Lee
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931
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Liu Y, Li Y, Keskin D, Shi L. Poly(β-Amino Esters): Synthesis, Formulations, and Their Biomedical Applications. Adv Healthc Mater 2019; 8:e1801359. [PMID: 30549448 DOI: 10.1002/adhm.201801359] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/04/2018] [Indexed: 12/12/2022]
Abstract
Poly(β-amino ester) (abbreviated as PBAE or PAE) refers to a polymer synthesized from an acrylate and an amine by Michael addition and has properties inherent to tertiary amines and esters, such as pH responsiveness and biodegradability. The versatility of building blocks provides a library of polymers with miscellaneous physicochemical and mechanical properties. When used alone or together with other materials, PBAEs can be fabricated into different formulations in order to fulfill various requirements in drug delivery (for instance, gene, anticancer drugs, and antimicrobials delivery) and natural complex mimicry (nanochaperones). This progress report discusses the recent developments in design, synthesis, formulations, and applications of PBAEs in biomedical fields and provides a perspective view for the future of the PBAEs.
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Affiliation(s)
- Yong Liu
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Functional Polymer MaterialsMinistry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University Tianjin 300071 China
- Department of Biomedical EngineeringUniversity of Groningen and University Medical Center Groningen Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Yuanfeng Li
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Functional Polymer MaterialsMinistry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University Tianjin 300071 China
- Department of Biomedical EngineeringUniversity of Groningen and University Medical Center Groningen Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Damla Keskin
- Department of Biomedical EngineeringUniversity of Groningen and University Medical Center Groningen Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Functional Polymer MaterialsMinistry of EducationInstitute of Polymer ChemistryCollege of ChemistryNankai University Tianjin 300071 China
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Durkut S. Thermoresponsive poly (N-vinylcaprolactam)-g-galactosylated chitosan hydrogel: synthesis, characterization, and controlled release properties. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1525546] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Serap Durkut
- Tissue Engineering, Biomaterials and Nanobiotechnology Laboratory, Ankara University Faculty of Science, Ankara, Turkey
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Ito T, Takami T, Uchida Y, Murakami Y. Chitosan gel sheet containing drug carriers with controllable drug-release properties. Colloids Surf B Biointerfaces 2018; 163:257-265. [DOI: 10.1016/j.colsurfb.2017.12.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/29/2017] [Accepted: 12/30/2017] [Indexed: 11/25/2022]
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Thambi T, Li Y, Lee DS. Injectable hydrogels for sustained release of therapeutic agents. J Control Release 2017; 267:57-66. [DOI: 10.1016/j.jconrel.2017.08.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 12/17/2022]
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Nutan B, Chandel AK, Bhalani DV, Jewrajka SK. Synthesis and tailoring the degradation of multi-responsive amphiphilic conetwork gels and hydrogels of poly(β-amino ester) and poly(amido amine). POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Sulfamethazine-based pH-sensitive hydrogels with potential application for transcatheter arterial chemoembolization therapy. Acta Biomater 2016; 41:253-63. [PMID: 27184404 DOI: 10.1016/j.actbio.2016.05.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 05/10/2016] [Accepted: 05/11/2016] [Indexed: 02/07/2023]
Abstract
UNLABELLED Transcatheter arterial chemoembolization (TACE) is the most common palliative therapy for unresectable hepatocellular carcinoma (HCC). The conventional TACE technique, which employs the Lipiodol® emulsion, has been widely used for human cancer treatments. However, this delivery system seems to be inconsistent and unstable in maintaining a high concentration of drugs at tumor sites. An alternative approach for TACE is loading drugs into a liquid embolic solution that exists as an injectable solution and can exhibit a sol-to-gel phase transition to form a solidified state once delivered to the tumor site. Here, we develop a novel sulfamethazine-based anionic pH-sensitive block copolymer with potential application as a radiopaque embolic material. The copolymer, named PCL-PEG-SM, and comprised of poly(ε-caprolactone), sulfamethazine, and poly(ethylene glycol), was fabricated by free radical polymerization. An aqueous solution of the developed copolymer underwent a sol-to-gel phase transition upon lowering the environmental pH to create a gel region that covered the physiological condition (pH 7.4, 37°C) and the low pH conditions at tumor sites (pH 6.5-7.0, 37°C). The release of doxorubicin (DOX) from DOX-loaded copolymer hydrogels could be sustained for more than 4weeks in vitro, and the released DOX retained its fully bioactivity via inhibition the proliferation of hepatic cancer cells. The radiopaque embolic formulations that were prepared by mixing copolymer solutions at pH 8.0 with Lipiodol®, a long-lasting X-ray contrast agent, could exhibit the gelation inside the tumor after intratumoral injection or intraarterial administration using a VX2 carcinoma hepatic tumor rabbit model. These results suggest that a novel anionic pH-sensitive copolymer has been developed with a potential application as a liquid radiopaque embolic solution for TACE of HCC. STATE OF SIGNIFICANCE Transcatheter arterial chemoembolization (TACE) has been widely used as a palliative treatment therapy for unresectable hepatocellular carcinoma (HCC). Conventional TACE technique, which usually employs emulsion of DOX-in-Lipiodol®, followed by an embolic agent, has significant limitation of inconsistency and lack of controlled release ability. To address these limitations of conventional TACE material system, we introduced a novel liquid radiopaque embolic material from our pH-sensitive hydrogel. The material has low viscosity that can be injected via a microcatheter, rather biocompatibility, and drug controlled release ability. Importantly, it can form gel in the tumor as well as tumoral vasculature in response to the lowered pH at the tumor site, which proved the potential for the use to treat HCC by TACE therapy.
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Hou L, Shi Y, Jiang G, Liu W, Han H, Feng Q, Ren J, Yuan Y, Wang Y, Shi J, Zhang Z. Smart nanocomposite hydrogels based on azo crosslinked graphene oxide for oral colon-specific drug delivery. NANOTECHNOLOGY 2016; 27:315105. [PMID: 27346852 DOI: 10.1088/0957-4484/27/31/315105] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A safe and efficient nanocomposite hydrogel for colon cancer drug delivery was synthesized using pH-sensitive and biocompatible graphene oxide (GO) containing azoaromatic crosslinks as well as poly (vinyl alcohol) (PVA) (GO-N=N-GO/PVA composite hydrogels). Curcumin (CUR), an anti-cancer drug, was encapsulated successfully into the hydrogel through a freezing and thawing process. Fourier transform infrared spectroscopy, scanning electron microscopy and Raman spectroscopy were performed to confirm the formation and morphological properties of the nanocomposite hydrogel. The hydrogels exhibited good swelling properties in a pH-sensitive manner. Drug release studies under conditions mimicking stomach to colon transit have shown that the drug was protected from being released completely into the physiological environment of the stomach and small intestine. In vivo imaging analysis, pharmacokinetics and a distribution of the gastrointestinal tract experiment were systematically studied and evaluated as colon-specific drug delivery systems. All the results demonstrated that GO-N=N-GO/PVA composite hydrogels could protect CUR well while passing through the stomach and small intestine to the proximal colon, and enhance the colon-targeting ability and residence time in the colon site. Therefore, CUR loaded GO-N=N-GO/PVA composite hydrogels might potentially provide a theoretical basis for the treatment of colon cancer with high efficiency and low toxicity.
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Affiliation(s)
- Lin Hou
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Road, Zhengzhou 450001, People's Republic of China. Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, People's Republic of China
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Cai X, Liu M, Zhang C, Sun D, Zhai G. pH-responsive copolymers based on pluronic P123-poly(β-amino ester): Synthesis, characterization and application of copolymer micelles. Colloids Surf B Biointerfaces 2016; 142:114-122. [DOI: 10.1016/j.colsurfb.2016.02.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 01/12/2016] [Accepted: 02/15/2016] [Indexed: 02/09/2023]
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Nguyen QV, Huynh DP, Park JH, Lee DS. Injectable polymeric hydrogels for the delivery of therapeutic agents: A review. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.03.016] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Mao H, Pan P, Shan G, Bao Y. In Situ Formation and Gelation Mechanism of Thermoresponsive Stereocomplexed Hydrogels upon Mixing Diblock and Triblock Poly(Lactic Acid)/Poly(Ethylene Glycol) Copolymers. J Phys Chem B 2015; 119:6471-80. [DOI: 10.1021/acs.jpcb.5b03610] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hailiang Mao
- State Key
Laboratory of Chemical
Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Pengju Pan
- State Key
Laboratory of Chemical
Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Guorong Shan
- State Key
Laboratory of Chemical
Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Yongzhong Bao
- State Key
Laboratory of Chemical
Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
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21
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Ishii S, Kaneko J, Nagasaki Y. Dual Stimuli-Responsive Redox-Active Injectable Gel by Polyion Complex Based Flower Micelles for Biomedical Applications. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00305] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiro Ishii
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
| | - Junya Kaneko
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
| | - Yukio Nagasaki
- Department
of Materials Science, Graduate School of Pure and Applied
Sciences, ‡Master’s School of Medical Sciences, Graduate School of Comprehensive
Human Sciences, and §Satellite Laboratory, International Center for Materials Nanoarchitectonics
(WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan
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Singh NK, Nguyen QV, Kim BS, Lee DS. Nanostructure controlled sustained delivery of human growth hormone using injectable, biodegradable, pH/temperature responsive nanobiohybrid hydrogel. NANOSCALE 2015; 7:3043-3054. [PMID: 25603888 DOI: 10.1039/c4nr05897f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The clinical efficacy of a therapeutic protein, the human growth hormone (hGH), is limited by its short plasma half-life and premature degradation. To overcome this limitation, we proposed a new protein delivery system by the self-assembly and intercalation of a negatively charged hGH onto a positively charged 2D-layered double hydroxide nanoparticle (LDH). The LDH-hGH ionic complex, with an average particle size of approximately 100 nm, retards hGH diffusion. Nanobiohybrid hydrogels (PAEU/LDH-hGH) were prepared by dispersing the LDH-hGH complex into a cationic pH- and temperature-sensitive injectable PAEU copolymer hydrogel to enhance sustained hGH release by dual ionic interactions. Biodegradable copolymer hydrogels comprising poly(β-amino ester urethane) and triblock poly(ε-caprolactone-lactide)-poly(ethylene glycol)-poly-(ε-caprolactone-lactide) (PCLA-PEG-PCLA) were synthesized and characterized. hGH was self-assembled and intercalated onto layered LDH nanoparticles through an anion exchange technique. X-ray diffraction and zeta potential results showed that the LDH-hGH complex was prepared successfully and that the PAEU/LDH-hGH nanobiohybrid hydrogel had a disordered intercalated nanostructure. The biocompatibility of the nanobiohybrid hydrogel was confirmed by an in vitro cytotoxicity test. The in vivo degradation of pure PAEU and its nanobiohybrid hydrogels was investigated and it showed a controlled degradation of the PAEU/LDH nanobiohybrids compared with the pristine PAEU copolymer hydrogel. The LDH-hGH loaded injectable hydrogels suppressed the initial burst release of hGH and extended the release period for 13 days in vitro and 5 days in vivo. The developed nanohybrid hydrogel has the potential for application as a protein carrier to improve patient compliance.
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Affiliation(s)
- Narendra K Singh
- Theranostic Macromolecules Research Center and School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea.
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Sharma K, Kumar V, Kaith BS, Kumar V, Som S, Pandey A, Kalia S, Swart HC. Evaluation of a conducting interpenetrating network based on gum ghatti-g-poly(acrylic acid-aniline) as a colon-specific delivery system for amoxicillin trihydrate and paracetamol. NEW J CHEM 2015. [DOI: 10.1039/c4nj01982b] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Development of colon-specific drug delivery systems for amoxicillin trihydrate and paracetamol using gum ghatti based crosslinked hydrogels.
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Affiliation(s)
- Kashma Sharma
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
| | - Vijay Kumar
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
| | - Balbir Singh Kaith
- Department of Chemistry
- Dr. B.R. Ambedkar National Institute of Technology
- Jalandhar
- India
| | - Vinod Kumar
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
| | - Sudipta Som
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
| | - Anurag Pandey
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
| | - Susheel Kalia
- Department of Chemistry
- Bahra University
- Waknaghat (Shimla Hills)
- Dist. Solan
- India
| | - Hendrik C. Swart
- Department of Physics
- University of the Free State
- Bloemfontein ZA9300
- South Africa
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Singh NK, Lee DS. In situ gelling pH- and temperature-sensitive biodegradable block copolymer hydrogels for drug delivery. J Control Release 2014; 193:214-27. [DOI: 10.1016/j.jconrel.2014.04.056] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 12/22/2022]
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Dong K, Dong Y, You C, Xu W, Huang X, Yan Y, Zhang L, Wang K, Xing J. Assessment of the safety, targeting, and distribution characteristics of a novel pH-sensitive hydrogel. Colloids Surf B Biointerfaces 2014; 123:965-73. [DOI: 10.1016/j.colsurfb.2014.10.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 10/21/2014] [Accepted: 10/25/2014] [Indexed: 11/15/2022]
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Nguyen MK, Alsberg E. Bioactive factor delivery strategies from engineered polymer hydrogels for therapeutic medicine. Prog Polym Sci 2014; 39:1236-1265. [PMID: 25242831 PMCID: PMC4167348 DOI: 10.1016/j.progpolymsci.2013.12.001] [Citation(s) in RCA: 166] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Polymer hydrogels have been widely explored as therapeutic delivery matrices because of their ability to present sustained, localized and controlled release of bioactive factors. Bioactive factor delivery from injectable biopolymer hydrogels provides a versatile approach to treat a wide variety of diseases, to direct cell function and to enhance tissue regeneration. The innovative development and modification of both natural-(e.g., alginate (ALG), chitosan, hyaluronic acid (HA), gelatin, heparin (HEP), etc.) and synthetic-(e.g., polyesters, polyethyleneimine (PEI), etc.) based polymers has resulted in a variety of approaches to design drug delivery hydrogel systems from which loaded therapeutics are released. This review presents the state-of-the-art in a wide range of hydrogels that are formed though self-assembly of polymers and peptides, chemical crosslinking, ionic crosslinking and biomolecule recognition. Hydrogel design for bioactive factor delivery is the focus of the first section. The second section then thoroughly discusses release strategies of payloads from hydrogels for therapeutic medicine, such as physical incorporation, covalent tethering, affinity interactions, on demand release and/or use of hybrid polymer scaffolds, with an emphasis on the last 5 years.
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Affiliation(s)
- Minh Khanh Nguyen
- Department of Biomedical Engineering, Case Western Reserve University, 204 Wickenden, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Eben Alsberg
- Department of Biomedical Engineering, Case Western Reserve University, 204 Wickenden, 10900 Euclid Avenue, Cleveland, OH 44106, USA
- Department of Orthopaedic Surgery, Case Western Reserve University, 204 Wickenden, 10900 Euclid Avenue, Cleveland, OH 44106, USA
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Sustained localized presentation of RNA interfering molecules from in situ forming hydrogels to guide stem cell osteogenic differentiation. Biomaterials 2014; 35:6278-6286. [PMID: 24831973 DOI: 10.1016/j.biomaterials.2014.04.048] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 04/13/2014] [Indexed: 02/07/2023]
Abstract
To date, RNA interfering molecules have been used to differentiate stem cells on two-dimensional (2D) substrates that do not mimic three-dimensional (3D) microenvironments in the body. Here, in situ forming poly(ethylene glycol) (PEG) hydrogels were engineered for controlled, localized and sustained delivery of RNA interfering molecules to differentiate stem cells encapsulated within the 3D polymer network. RNA interfering molecules were released from the hydrogels in a sustained and controlled manner over the course of 3-6 weeks, and exhibited high bioactivity. Importantly, it was demonstrated that the delivery of siRNA and/or miRNA from the hydrogel constructs enhanced the osteogenic differentiation of encapsulated stem cells. Prolonged delivery of siRNA and/or miRNA from this polymeric scaffold permitted extended regulation of cell behavior, unlike traditional siRNA experiments performed in vitro. This approach presents a powerful new methodology for controlling cell fate, and is promising for multiple applications in tissue engineering and regenerative medicine.
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Dong K, Dong Y, You C, Xu W, Huang X, Yan Y, Zhang L, Wang K, Xing J. Assessment of the drug loading, in vitro and in vivo release behavior of novel pH-sensitive hydrogel. Drug Deliv 2014; 23:174-84. [PMID: 24806351 DOI: 10.3109/10717544.2014.908329] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT As a glucocorticoid drug, dexamethasone has good therapeutic effects for ulcerative colitis. pH-sensitive hydrogels could make conventional changes of volume in response with different pH values. Meanwhile, they could load drugs depending on its internal three-dimensional network structure. OBJECTIVE Appropriate methods were used to improve the drug-loading capacity of hydrogel and exploring the colon-targeting character of dexamethasone hydrogel. MATERIALS AND METHODS Different solvents (ethanol and 1,2-propanediol) were employed to dissolve dexamethasone as well as hydrogel monomer materials (poly(ethylene glycol) methyl ether (MPEG)-poly(lactide acid)-acryloyl chloride macromonomer, itaconic acid (IA) and MPEG-methacrylate), then mixing them together to prepare hydrogel through the heat-initiated free radical polymerization method. Differential scanning calorimetry and X-ray diffraction methods were used to verify whether dexamethasone was loaded into hydrogels. In vitro drug release behavior and in vivo pharmacokinetic study were also investigated in detail. RESULTS Dexamethasone was successfully loaded into hydrogel, and its loading capacity was improved (5 mg/g). Both the in vitro release study and the in vivo pharmacokinetic study showed the good colon-targeting character of the pH-sensitive P(LE-IA-MEG) hydrogel (T max = 1.0 h, C max = 2.16 µg/ml of dexamethasone; T max = 3.9 h, C max = 0.43 µg/ml of dexamethasone hydrogel). DISCUSSION Dexamethasone could be targeted to the colon site by P(LE-IA-MEG) hydrogel, thereby improving its therapeutic effect and reduce its side effects. CONCLUSION P(LE-IA-MEG) hydrogel might have great potential application in colon-targeted drug delivery systems.
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Affiliation(s)
- Kai Dong
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Yalin Dong
- b Depertment of Pharmacy, The first Affiliated Hospital of Medical College , Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Cuiyu You
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Wei Xu
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Xiaoyan Huang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Yan Yan
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Lu Zhang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Ke Wang
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
| | - Jianfeng Xing
- a School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi , China and
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Heinzmann C, Coulibaly S, Roulin A, Fiore GL, Weder C. Light-induced bonding and debonding with supramolecular adhesives. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4713-4719. [PMID: 24484360 DOI: 10.1021/am405302z] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Light-responsive supramolecular polymers were applied as reversible adhesives that permit bonding and debonding on demand features. A telechelic poly(ethylene-co-butylene) (PEB) was functionalized with either self-complementary hydrogen-bonding ureidopyrimidinone (UPy) motifs (UPy-PEB-UPy) or 2,6-bis(1'-methylbenzimidazolyl)-pyridine (Mebip) ligands (Mebip-PEB-Mebip), which can coordinate to metal ions (Zn(NTf2)2) and form a metallosupramolecular polymer with the sum formula [Znx(Mebip-PEB-Mebip)](NTf2)2x, with x ≈ 1. In the latter case, light-heat conversion is facilitated by the ultraviolet (UV) light-absorbing metal-ligand motifs, while in the case of UPy-PEB-UPy a UV absorber was added for this purpose. Single lap joints were prepared by sandwiching films of the supramolecular polymers of a thickness of 80-100 μm between two glass, quartz, or stainless steel substrates and bonded by exposure to either UV light (320-390 nm, 900 mW/cm(2)) or heat (80 or 200 °C for UPy-PEB-UPy and the metallopolymer, respectively). UPy-PEB-UPy and [Zn0.8Mebip-PEB-Mebip](NTf2)1.6 displayed a shear strength of 0.9-1.2 and 1.8-2.5 MPa, respectively. When lap joints were placed under load and exposed to light or heat, the samples debonded within seconds. They could be rebonded through exposure to light or heat, and the original adhesive properties were recovered.
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Affiliation(s)
- Christian Heinzmann
- Adolphe Merkle Institute, University of Fribourg , CH-1700 Fribourg, Switzerland
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Abstract
Drug-delivery system responses to stimuli have been well investigated recently. As pH decrease is observed in most solid tumors, drug-delivery systems responsive to the slightly acidic extracellular pH environment of solid tumors have been developed as a general strategy for tumor targeting. Drug vehicles that are sensitive to acidic endosome/lysosome pH have been constructed for efficient drug release in tumor cells. This review explains the mechanisms of acidic pH in the tumor microenvironment and endocytic-related organelles, endosomes and lysosomes. Nanoparticle responses to acidic extracellular pH are discussed, along with approaches for improving tumor-specific therapy. Endosome/lysosome pH-triggered vehicles are reviewed, which achieve rapid drug release in tumor cells and overcome multidrug resistance.
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Wennink J, Signori F, Karperien M, Bronco S, Feijen J, Dijkstra P. Introducing small cationic groups into 4-armed PLLA–PEG copolymers leads to preferred micellization over thermo-reversible gelation. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Synthesis, characterization, and acute oral toxicity evaluation of pH-sensitive hydrogel based on MPEG, poly(ε-caprolactone), and itaconic acid. BIOMED RESEARCH INTERNATIONAL 2013; 2013:239838. [PMID: 24364030 PMCID: PMC3864077 DOI: 10.1155/2013/239838] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/17/2013] [Accepted: 10/26/2013] [Indexed: 02/05/2023]
Abstract
A kind of chemically cross-linked pH-sensitive hydrogels based on methoxyl poly(ethylene glycol)-poly(caprolactone)-acryloyl chloride (MPEG-PCL-AC, PECA), poly(ethylene glycol) methyl ether methacrylate (MPEGMA, MEG), N,N-methylenebisacrylamide (BIS), and itaconic acid (IA) were prepared without using any organic solvent by heat-initiated free radical method. The obtained macromonomers and hydrogels were characterized by 1H NMR and FT-IR, respectively. Morphology study of hydrogels was also investigated in this paper, and it showed that the hydrogels had good pH-sensitivity. The acute toxicity test and histopathological study were conducted in BALB/c mice. The results indicated that the maximum tolerance dose of the hydrogel was higher than 10000 mg/kg body weight. No morality or signs of toxicity were observed during the whole 7-day observation period. Compared to the control groups, there were no important adverse effects in the variables of hematology routine test and serum chemistry analysis both in male or female treatment group. Histopathological study also did not show any significant lesions, including heart, liver, lung, spleen, kidney, stomach, intestine, and testis. All the results demonstrated that this hydrogel was nontoxic after gavage. Thus, the hydrogel might be the biocompatible potential candidate for oral drug delivery system.
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KGM and PMAA based pH-sensitive interpenetrating polymer network hydrogel for controlled drug release. Carbohydr Polym 2013; 97:565-70. [DOI: 10.1016/j.carbpol.2013.05.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 05/01/2013] [Accepted: 05/07/2013] [Indexed: 11/22/2022]
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Affiliation(s)
- Samaneh Khanlari
- Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; 161 Louis Pasteur Pvt. Ottawa ON, Canada K1N 6N5
| | - Marc A. Dubé
- Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; 161 Louis Pasteur Pvt. Ottawa ON, Canada K1N 6N5
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35
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Preparation of injectable and thermoresponsive hydrogel based on penta-block copolymer with improved sol stability and mechanical properties. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Bardajee GR, Hooshyar Z. Novel potentially biocompatible nanoporous hydrogel based on poly ((2-dimethylaminoethyl) methacrylate) grafted onto salep: synthesis, swelling behavior and drug release study. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-0067-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Wang K, Li WF, Xing JF, Dong K, Gao Y. Preliminary assessment of the safety evaluation of novel pH-sensitive hydrogel. Eur J Pharm Biopharm 2012; 82:332-9. [DOI: 10.1016/j.ejpb.2012.07.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/17/2012] [Accepted: 07/23/2012] [Indexed: 11/29/2022]
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38
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Zhang CY, Yang YQ, Huang TX, Zhao B, Guo XD, Wang JF, Zhang LJ. Self-assembled pH-responsive MPEG-b-(PLA-co-PAE) block copolymer micelles for anticancer drug delivery. Biomaterials 2012; 33:6273-83. [DOI: 10.1016/j.biomaterials.2012.05.025] [Citation(s) in RCA: 194] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Accepted: 05/11/2012] [Indexed: 12/27/2022]
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39
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Yang X, Kim JC, Jin Seo H. Hydrogel of β-cyclodextrin-Grafted Polyethyleneimine: pH-Sensitive Release. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2011.596332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Synthesis and characterization of poly(amino urea urethane)-based block copolymer and its potential application as injectable pH/temperature-sensitive hydrogel for protein carrier. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.07.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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41
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Huynh CT, Nguyen MK, Jeong IK, Kim SW, Lee DS. Synthesis, Characteristics and Potential Application of Poly(β-Amino Ester Urethane)-Based Multiblock Co-Polymers as an Injectable, Biodegradable and pH/Temperature-Sensitive Hydrogel System. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1091-106. [DOI: 10.1163/092050611x575423] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Cong Truc Huynh
- a Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea
| | - Minh Khanh Nguyen
- b Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea; Department of Biomedical Engineering, Case Western Reverse University, Cleveland, OH 44106, USA
| | - In Ki Jeong
- c Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea
| | - Sung Wan Kim
- d Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA; Department of Bioengineering, College of Engineering, Hanyang University, Seoul, South Korea
| | - Doo Sung Lee
- e Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea.
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42
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Controlling the properties of poly(amino ester urethane)–poly(ethylene glycol)–poly(amino ester urethane) triblock copolymer pH/temperature-sensitive hydrogel. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2624-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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43
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Thambi T, Deepagan V, Yoo CK, Park JH. Synthesis and physicochemical characterization of amphiphilic block copolymers bearing acid-sensitive orthoester linkage as the drug carrier. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.08.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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44
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Huynh CT, Nguyen MK, Lee DS. Injectable Block Copolymer Hydrogels: Achievements and Future Challenges for Biomedical Applications. Macromolecules 2011. [DOI: 10.1021/ma201261m] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Cong Truc Huynh
- Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea
| | - Minh Khanh Nguyen
- Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea
- Department of Biomedical Engineering, Case Western Reverse University, Cleveland, Ohio 44106, United States
| | - Doo Sung Lee
- Theranostic Macromolecules Research Center, Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, South Korea
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Biodegradable pH/temperature-sensitive oligo(β-amino ester urethane) hydrogels for controlled release of doxorubicin. Acta Biomater 2011; 7:3123-30. [PMID: 21601018 DOI: 10.1016/j.actbio.2011.05.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 04/19/2011] [Accepted: 05/04/2011] [Indexed: 11/21/2022]
Abstract
An injectable biodegradable pH/temperature-sensitive oligo(β-amino ester urethane) (OAEU) was synthesized. The OAEU was synthesized by addition polymerization between the isocyanate groups of 1,6-diisocyanato hexamethylene and the hydroxyl groups of a synthesized monomer piperazine dihydroxyl amino ester (monomer PDE) in chloroform in the presence of dibutyltin dilaurate as a catalyst. The synthesized OAEU was characterized by (1)H NMR spectroscopy, Fourier transform infrared spectroscopy and gel permeation chromatography. The aqueous solutions of OAEU showed a sol-to-gel-to-sol phase transition as a function of temperature and pH. The gel window covered the physiological conditions (37°C, pH 7.4) and could be controlled by changing the OAEU concentration. After a subcutaneous injection of the OAEU solution into Sprague-Dawley rats, a gel formed rapidly in situ and remained in the body for more than 2 weeks. The in vitro cytotoxicity test and in vitro degradation showed that the OAEU hydrogel was non-cytotoxic and biodegradable. The in vitro release of doxorubicin from this OAEU hydrogel was sustained for more than 10 days. This injectable biodegradable pH/temperature-sensitive OAEU hydrogel is a potential candidate as a drug/protein carrier and in biomedical applications.
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Bütün V, Taktak FF, Tuncer C. Tertiary Amine Methacrylate-Based ABC Triblock Copolymers: Synthesis, Characterization, and Self-Assembly in both Aqueous and Nonaqueous Media. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100057] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Huynh CT, Nguyen MK, Huynh DP, Lee DS. Biodegradable star-shaped poly(ethylene glycol)-poly(β-amino ester) cationic pH/temperature-sensitive copolymer hydrogels. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-010-2349-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zheng Y, Nguyen MK, He C, Huynh CT, Lee DS. pH- and temperature-sensitive PCL-grafted poly(β-amino ester)-poly(ethylene glycol)-poly(β-amino ester) copolymer hydrogels. Macromol Res 2010. [DOI: 10.1007/s13233-010-1110-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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