1
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Loss of multipotency in adipose-derived stem cells after culture in temperature-responsive injectable polymer hydrogels. Polym J 2022. [DOI: 10.1038/s41428-022-00739-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractAdipose-derived stem cells (AdSCs), a type of mesenchymal stem cell, are expected to be applicable to regenerative medicine and cellular delivery systems. The maintenance of cell multipotency and control of the differentiation direction are important for these applications. However, the differentiation direction of these cells is widely believed to depend on the physical properties of their scaffold. In this study, we explored whether the multipotency of AdSCs, that is, their ability to differentiate into multiple cells, is maintained when they are removed from injectable polymer (IP) hydrogels with various degrees of cross-linking and induced to differentiate into osteoblasts and adipocytes. We confirmed that AdSCs cultured in IP hydrogels maintained an undifferentiated state. However, their differentiation into osteoblasts and adipocytes cannot be ensured; specifically, the multipotency of AdSCs may decrease when they are cultured in IP hydrogels. When cultured in an IP hydrogel with extreme softness and poor cell adhesion properties, the AdSCs remained in an undifferentiated state, but their multipotency was reduced. These results provide important insights into stem cell delivery systems using IP hydrogels.
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2
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Fujiwara S, Yoshizaki Y, Kuzuya A, Ohya Y. Temperature-responsive biodegradable injectable polymers with tissue adhesive properties. Acta Biomater 2021; 135:318-330. [PMID: 34461346 DOI: 10.1016/j.actbio.2021.08.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 11/18/2022]
Abstract
Injectable polymers (IPs) exhibiting in situ hydrogel formation have attracted attention as vascular embolization and postoperative adhesion prevention materials. While utilizing hydrogels for such purposes, it is essential to ensure that they have appropriate and controllable tissue adhesion property, as it is crucial for them to not detach from their deposited location in the blood vessel or abdominal cavity. Additionally, it is important to maintain gel state in vivo for the desired period at such locations, where large amounts of body fluid exist. We had previously reported on a biodegradable IP system exhibiting temperature-responsive gelation and subsequent covalent cross-link formation. We had utilized triblock copolymers of aliphatic polyester and poly(ethylene glycol) (tri-PCGs) and its derivative containing acrylate group at the termini (tri-PCG-Acryl), exhibiting a longer and more controllable duration time of the gel state. In this study, the introduction of aldehyde groups by the addition of aldehyde-modified Pluronic (PL-CHO) was performed for conferring controllable and appropriate tissue adhesive properties on these IP systems. The IP systems containing PL-CHO, which were not covalently incorporated into the hydrogel network, exhibited tissue adhesive properties through Schiff base formation. The adhesion strength could be controlled by the amount of PL-CHO added. The IP system showed good vascular embolization performance and pressure resistance in the blood vessels. The IP hydrogel remained at the administration site in the abdominal space for 2 days and displayed effective adhesion prevention performance. STATEMENT OF SIGNIFICANCE: Injectable polymers (IPs), which exhibit in situ hydrogel formation, are expected to be utilized as vascular embolization and postoperative adhesion prevention materials. The tissue adhesion properties of hydrogels are important for such applications. We succeeded in conferring tissue adhesion properties onto a previously reported IP system by mixing it with Pluronic modified with aldehyde groups (PL-CHO). The aldehyde groups allowed for the formation of Schiff bases at the tissue surfaces. The tissue adhesion property could be conveniently controlled by altering the amount of PL-CHO. We revealed that the in vitro embolization properties of IPs in blood vessels could be substantially improved by mixing with PL-CHO. The IP system containing PL-CHO also exhibited good in vivo performance for postoperative adhesion prevention.
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Affiliation(s)
- Soichiro Fujiwara
- Faculty of Chemistry, Materials, and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Yuta Yoshizaki
- Organization for Research and Development of Innovative Science and Technology (ORDIST), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Akinori Kuzuya
- Faculty of Chemistry, Materials, and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan; Kansai University Medical Polymer Research Center (KUMP-RC), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Yuichi Ohya
- Faculty of Chemistry, Materials, and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan; Kansai University Medical Polymer Research Center (KUMP-RC), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan.
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3
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Kunkit N, Deekaikam T, Chaimuang S, Pekkoh J, Manokruang K. Physical hydrogels prepared from cationically modified pectin with tunable sol-gel phase transition behaviors. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1695208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nootcharee Kunkit
- Faculty of Science, Department of Chemistry, Chiang Mai University, Chiang Mai, Thailand
- Graduate School, Chiang Mai University, Chiang Mai, Thailand
| | - Thanapon Deekaikam
- Faculty of Science, Department of Chemistry, Chiang Mai University, Chiang Mai, Thailand
| | - Saranporn Chaimuang
- Faculty of Science, Department of Biology, Chiang Mai University, Chiang Mai, Thailand
| | - Jeeraporn Pekkoh
- Faculty of Science, Department of Biology, Chiang Mai University, Chiang Mai, Thailand
| | - Kiattikhun Manokruang
- Faculty of Science, Department of Chemistry, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Science, Materials Science Research Center, Chiang Mai University, Chiang Mai, Thailand
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4
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Ong J, Zhao J, Justin AW, Markaki AE. Albumin-based hydrogels for regenerative engineering and cell transplantation. Biotechnol Bioeng 2019; 116:3457-3468. [PMID: 31520415 PMCID: PMC6899591 DOI: 10.1002/bit.27167] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/08/2019] [Accepted: 09/12/2019] [Indexed: 01/04/2023]
Abstract
Albumin, the most abundant plasma protein in mammals, is a versatile and easily obtainable biomaterial. It is pH and temperature responsive, dissolvable in high concentrations and gels readily in defined conditions. This versatility, together with its inexpensiveness and biocompatibility, makes albumin an attractive biomaterial for biomedical research and therapeutics. So far, clinical research in albumin has centered mainly on its use as a carrier molecule or nanoparticle to improve drug pharmacokinetics and delivery to target sites. In contrast, research in albumin-based hydrogels is less established albeit growing in interest over recent years. In this minireview, we report current literature and critically discuss the synthesis, mechanical properties, biological effects and uses, biodegradability and cost of albumin hydrogels as a xeno-free, customizable, and transplantable construct for tissue engineering and regenerative medicine.
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Affiliation(s)
- John Ong
- Department of Engineering, University of Cambridge, Cambridge, UK.,Gastroenterology Specialty Training Program, East of England Deanery, Cambridge, UK
| | - Junzhe Zhao
- Department of Engineering, University of Cambridge, Cambridge, UK
| | | | - Athina E Markaki
- Department of Engineering, University of Cambridge, Cambridge, UK
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5
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Temperature-responsive biodegradable injectable polymer systems with conveniently controllable properties. Polym J 2019. [DOI: 10.1038/s41428-019-0217-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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6
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Jommanee N, Chanthad C, Manokruang K. Preparation of injectable hydrogels from temperature and pH responsive grafted chitosan with tuned gelation temperature suitable for tumor acidic environment. Carbohydr Polym 2018; 198:486-494. [PMID: 30093026 DOI: 10.1016/j.carbpol.2018.06.099] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 06/21/2018] [Accepted: 06/22/2018] [Indexed: 11/15/2022]
Abstract
In this present work, stimuli responsive polymers that can respond to the temperature and pH of the environment were prepared. A series of temperature responsive diblock copolymers based on poly(ethylene glycol) methyl ether (mPEG) and ε-caprolactone (CL) were synthesized. Subsequently, the diblock copolymers were grafted onto chitosan, a pH responsive biopolymer. These chitosan-graft-(mPEG-block-PCL) (chitosan-g-(mPEG-b-PCL)) graft copolymers were structurally characterized by 1H NMR and FTIR and their sol-gel phase transitions were analyzed by the test tube inversion method as well as dynamic rheological measurements. These chitosan-g-(mPEG-b-PCL) graft copolymers demonstrated tunable temperature and pH responsive sol-gel phase transitions that correspond well with body temperature and pH of acidic tumor microenvironments. Gelation temperature (Tgel) decreased with increasing pH of the system, increasing PCL composition in the diblock copolymers, increasing solution concentration and decreasing grafting content of the diblock copolymers on chitosan. The graft copolymer hydrogels successfully showed the sustained release of both doxorubicin and curcumin for up to 2 weeks. The designed system was based on chitosan-g-(mPEG-b-PCL) graft copolymers, of which chitosan showed pH responsive properties and mPEG-b-PCL acted as a temperature sensitive moiety. In addition, mPEG and PCL are recognized as biocompatible polymers and chitosan has been engaged in various pharmaceutical research. Thus, this system could be considered an alternative choice for drug delivery applications.
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Affiliation(s)
- Natnicha Jommanee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chalathorn Chanthad
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Kiattikhun Manokruang
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
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7
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Yoshida Y, Takai H, Kawahara K, Mitsumune S, Takata K, Kuzuya A, Ohya Y. Biodegradable injectable polymer systems exhibiting a longer and controllable duration time of the gel state. Biomater Sci 2018; 5:1304-1314. [PMID: 28594018 DOI: 10.1039/c7bm00357a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Here, we report biodegradable temperature-triggered covalent gelation systems exhibiting a longer and controllable duration time of the gel state by a "mixing strategy" utilizing a thiol-ene reaction. We synthesized a tri-block copolymer of poly(caprolactone-co-glycolic acid) and PEG (tri-PCG) as a temperature-responsive injectable polymer (IP) and attached acryloyl groups on both termini (tri-PCG-Acryl). A tri-PCG micelle solution containing hydrophobic hexa-functional polythiol (Solution-A) and a tri-PCG-Acryl micelle solution (Solution-B) were mixed together. After mixing, the solution was still in the sol state at r.t., but exhibited an irreversible sol-to-gel transition in response to temperature. The duration time of the gel state while soaking in PBS could be altered from 1 day to 93 days by changing the mixing ratio of Solution-A/B. The physical strengths of the hydrogels were also controllable by changing the mixing ratio. The IP system showed good biocompatibility and a long duration time of the gel state after subcutaneous implantation.
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Affiliation(s)
- Yasuyuki Yoshida
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan.
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8
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Asai D, Kanamoto T, Takenaga M, Nakashima H. In situ depot formation of anti-HIV fusion-inhibitor peptide in recombinant protein polymer hydrogel. Acta Biomater 2017; 64:116-125. [PMID: 29037895 DOI: 10.1016/j.actbio.2017.10.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/11/2017] [Accepted: 10/13/2017] [Indexed: 01/04/2023]
Abstract
Most peptide drugs have short half-lives, necessitating frequent injections that may induce skin sensitivity reactions; therefore, versatile prolonged-release delivery platforms are urgently needed. Here, we focused on an oxidatively and thermally responsive recombinant elastin-like polypeptide with periodic cysteine residues (cELP), which can rapidly and reversibly form a disulfide cross-linked network in which peptide can be physically incorporated. As a model for proof of concept, we used enfuvirtide, an antiretroviral fusion-inhibitor peptide approved for treatment of human immunodeficiency virus (HIV) infection. cELP was mixed with enfuvirtide and a small amount of hydrogen peroxide (to promote cross-linking), and the soluble mixture was injected subcutaneously. The oxidative cross-linking generates a network structure, causing the mixture to form a hydrogel in situ that serves as an enfuvirtide depot. We fabricated a series of enfuvirtide-containing hydrogels and examined their stability, enfuvirtide-releasing profile and anti-HIV potency in vitro. Among them, hydrophobic cELP hydrogel provided effective concentrations of enfuvirtide in blood of rats for up to 8 h, and the initial concentration peak was suppressed compared with that after injection of enfuvirtide alone. cELP hydrogels should be readily adaptable as platforms to provide effective depot systems for delivery of other anti-HIV peptides besides enfuvirtide. STATEMENT OF SIGNIFICANCE In this paper, we present an anti-HIV peptide delivery system using oxidatively and thermally responsive polypeptides that contain multiple periodic cysteine residues as an injectable biomaterial capable of in situ self-gelation, and we demonstrate its utility as an injectable depot capable of sustained release of anti-HIV peptides. The novelty of this work stems from the platform employed to provide the depot encapsulating the peptide drugs (without chemical conjugation), which consists of rationally designed, genetically engineered polypeptides that enable the release rate of the peptide drugs to be precisely controlled.
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Affiliation(s)
- Daisuke Asai
- Department of Microbiology, St. Marianna University, School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki 216-8511, Japan.
| | - Taisei Kanamoto
- Department of Microbiology, St. Marianna University, School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki 216-8511, Japan
| | - Mitsuko Takenaga
- Institute of Medical Science, St. Marianna University, School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki 216-8512, Japan
| | - Hideki Nakashima
- Department of Microbiology, St. Marianna University, School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki 216-8511, Japan
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9
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Jin E, Zhang Z, Lian H, Chen X, Xiao C, Zhuang X, Chen X. Injectable electroactive hydrogels based on Pluronic® F127 and tetraaniline copolymer. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Yoshida Y, Kawahara K, Inamoto K, Mitsumune S, Ichikawa S, Kuzuya A, Ohya Y. Biodegradable Injectable Polymer Systems Exhibiting Temperature-Responsive Irreversible Sol-to-Gel Transition by Covalent Bond Formation. ACS Biomater Sci Eng 2016; 3:56-67. [PMID: 33429686 DOI: 10.1021/acsbiomaterials.6b00581] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Biodegradable injectable polymer (IP) systems exhibiting temperature-responsive sol-to-gel transitions between room temperature and body temperature have the potential for use in biomedical applications. However, gelation of such IP systems is a reversible process through physical cross-linking, and the hydrogels thus formed are likely to revert to the sol state under highly wet conditions after injection. In this study, a biodegradable IP system exhibiting temperature-responsive irreversible sol-to-gel transition by covalent bond formation was developed by simple mixing of polymers. A triblock copolymer of poly(caprolactone-co-glycolic acid) and poly(ethylene glycol) (tri-PCG) and tri-PCG with attached succinimide ester groups at both termini (tri-PCG-SA-OSu) were prepared and mixed together with a water-soluble polyamine (typically poly-l-lysine). The obtained IP formulation was in the sol state after mixing, but exhibited a rapid sol-to-gel transition within 30 s upon increasing the temperature to 37 °C. Once formed, the hydrogel did not revert to the sol state, even after cooling to 4 °C, because of the formation of covalent bonds upon transition. The obtained hydrogel soaked in phosphate buffered saline (PBS) exhibited a significantly longer duration time of the gel state. This IP system exhibiting a rapid and irreversible sol-to-gel transition is convenient for medical professionals and possesses great potential for use in biomedical devices for clinical applications such as drug delivery systems and antiadhesive materials.
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Affiliation(s)
- Yasuyuki Yoshida
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Keisuke Kawahara
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Kenta Inamoto
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Shintaro Mitsumune
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Shinya Ichikawa
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Akinori Kuzuya
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan.,PREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
| | - Yuichi Ohya
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
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11
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You J, Cao J, Zhao Y, Zhang L, Zhou J, Chen Y. Improved Mechanical Properties and Sustained Release Behavior of Cationic Cellulose Nanocrystals Reinforeced Cationic Cellulose Injectable Hydrogels. Biomacromolecules 2016; 17:2839-48. [DOI: 10.1021/acs.biomac.6b00646] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jun You
- Department
of Chemistry and Key Laboratory of Biomedical Polymers of Ministry
of Education, Wuhan University, Wuhan 430072, China
- CAS
Key Lab of Biobased Materials, Qingdao Institute of Bioenergy and
Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Jinfeng Cao
- Department
of Chemistry and Key Laboratory of Biomedical Polymers of Ministry
of Education, Wuhan University, Wuhan 430072, China
| | - Yanteng Zhao
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Lina Zhang
- Department
of Chemistry and Key Laboratory of Biomedical Polymers of Ministry
of Education, Wuhan University, Wuhan 430072, China
| | - Jinping Zhou
- Department
of Chemistry and Key Laboratory of Biomedical Polymers of Ministry
of Education, Wuhan University, Wuhan 430072, China
| | - Yun Chen
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
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12
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Rapeekan J, Songtipya P, Lee DS, Manokruang K. Binding interactions between lysozyme and injectable hydrogels derived from albumin-pH/thermo responsive poly(amino urethane) conjugates in aqueous solution. Colloids Surf B Biointerfaces 2016; 146:558-66. [PMID: 27423103 DOI: 10.1016/j.colsurfb.2016.06.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/27/2016] [Accepted: 06/19/2016] [Indexed: 11/25/2022]
Abstract
Injectable hydrogels are alternative materials for drug and protein delivery in biomedical applications, which can potentially eliminate the need of surgical implantation in the treatment procedures. Prior to administration, such hydrogels, in a liquid state, must demonstrate good interactions with the incorporated molecules to maintain the sustain release of active agents and to avoid unappreciative burst release. The injectable hydrogels derived from BSA-pH/temperature responsive poly(amino urethane) conjugates have been reported to demonstrated good sustainability for delivery of lysozyme, both in vitro and in vivo. However, the interactions between such conjugates and the loading lysozyme were not fully understood. In this present work, we reported the binding interactions between the studied complex systems, BSA-pH/temperature responsive poly(amino urethane) conjugates (CONJ1 and CONJ2) and lysozyme. Fluorescence spectroscopy in a combination with thermodynamic analysis exhibited that the binding between the conjugates and lysozyme occurred through static quenching and the binding interactions in the complexes were mainly van der Waals forces and hydrogen bonds. The binding constants (KA) determined at 300, 308 and 318K of CONJ1 to lysozyme were 7.96×10(4), 6.45×10(4) and 3.20×10(4)M(-1), respectively and those of CONJ2 to lysozyme were 2.63×10(4), 2.53×10(4) and 1.19×10(4)M(-1), respectively. FTIR analysis showed that the complexes between the conjugates and lysozyme demonstrated sufficiently small deviation in the conformational structures from the native lysozyme. In addition, the morphology revealed by TEM and AFM imaging portrayed the behavior of complex formation in such a way that the conjugates, before complex formation, displayed the core-shell structures. After the complex formation, a number of lysozyme particles were noticeably entrapped as if they penetrated into the preformed core-shell conjugates.
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Affiliation(s)
| | - Ponusa Songtipya
- Department of Material Product Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Doo Sung Lee
- Theranostic Macromolecules Research Center, School of Chemical Engineering, Sungkyunkwan University, Suwon Gyeonggi-do, 16419, South Korea
| | - Kiattikhun Manokruang
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
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Lee P, Towslee J, Maia J, Pokorski J. PEGylation to Improve Protein Stability During Melt Processing. Macromol Biosci 2015; 15:1332-7. [PMID: 26097064 PMCID: PMC4615555 DOI: 10.1002/mabi.201500143] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/14/2015] [Indexed: 12/19/2022]
Abstract
Biopharmaceuticals are some of the most effective drugs on the market, however, delivery remains a challenge. Melt processing is a viable protein encapsulation method because it is solvent free, is high throughput, and yields very high encapsulation efficiencies. Problematically, proteins can lose activity during melt processing due to high heat and shear forces. Covalent attachment of poly(ethylene glycol), or PEGylation, has been widely used to increase thermal stability and prevent aggregation in solution. This study explored the effect of PEGylation on protein stability during melt processing using lysozyme and PLGA. The results indicate that PEGylation increases the retained activity of lysozyme, increases dispersion in the melt, and reduces the biphasic release profile in melt processed systems.
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Affiliation(s)
- Parker Lee
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, 44106, USA
| | - Jenna Towslee
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, 44106, USA
| | - João Maia
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, 44106, USA
| | - Jonathan Pokorski
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, 44106, USA.
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14
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Pyun DG, Choi HJ, Yoon HS, Thambi T, Lee DS. Polyurethane foam containing rhEGF as a dressing material for healing diabetic wounds: Synthesis, characterization, in vitro and in vivo studies. Colloids Surf B Biointerfaces 2015; 135:699-706. [PMID: 26340359 DOI: 10.1016/j.colsurfb.2015.08.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/28/2015] [Accepted: 08/20/2015] [Indexed: 11/29/2022]
Abstract
Diabetic wounds are a major health issue associated with diabetes mellitus. To surmount this issue, we developed polyurethane foams (PUFs) incorporating varying amounts of recombinant human epidermal growth factor (rhEGF) (rhEGF-PUFs) as a wound dressing for diabetic wounds. From electron microscopy images, it was found that the pore size of the rhEGF-PUFs surface (the wound contact layer) was less than 100μm, regardless of rhEGF content. The release of rhEGF from the PUFs was evaluated using an enzyme-linked immunosorbent assay. The result showed that the release of rhEGF was time and concentration dependent, i.e., the amount of released rhEGF significantly increased as the immersion time and the rhEGF content of the PUFs increased. In vitro cytotoxicity testing showed that rhEGF-PUFs increased the viability of HaCaT human keratinocytes and CCD986-sk human fibroblasts, which indicated that the incorporated rhEGF maintained its biological activity. In an in vitro scratch wound healing assay, the wound closure rate was faster in CCD986-sk human fibroblasts than in HaCaT human keratinocytes. Finally, the rhEGF-PUFs were evaluated as an in vivo treatment in a full-thickness wound model in diabetized Sprague-Dawley rats. The result indicated that compared with PUFs, rhEGF-PUFs accelerated wound healing by promoting wound contraction, re-epithelialization, collagen deposition and the formation of a skin appendage. These findings demonstrate that rhEGF-PUFs are a promising dressing for diabetic wounds.
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Affiliation(s)
- Do Gi Pyun
- Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Hyun Jun Choi
- Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Hyoung Soon Yoon
- Biomedical Polymer R&D Institute, T&L, Co., Ltd., Anseong 456-812, Republic of Korea
| | - Thavasyappan Thambi
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Doo Sung Lee
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
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15
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Sim HJ, Thambi T, Lee DS. Heparin-based temperature-sensitive injectable hydrogels for protein delivery. J Mater Chem B 2015; 3:8892-8901. [DOI: 10.1039/c5tb01399b] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polysaccharide-based biodegradable, biocompatible and temperature-sensitive injectable hydrogels have been developed for the sustained delivery of proteins.
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Affiliation(s)
- Hye Jin Sim
- School of Chemical Engineering
- Theranostic Macromolecules Research Center
- Sungkyunkwan University
- Suwon
- Republic of Korea
| | - Thavasyappan Thambi
- School of Chemical Engineering
- Theranostic Macromolecules Research Center
- Sungkyunkwan University
- Suwon
- Republic of Korea
| | - Doo Sung Lee
- School of Chemical Engineering
- Theranostic Macromolecules Research Center
- Sungkyunkwan University
- Suwon
- Republic of Korea
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16
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Abstract
INTRODUCTION Proteins are effective biotherapeutics with applications in diverse ailments. Despite being specific and potent, their full clinical potential has not yet been realized. This can be attributed to short half-lives, complex structures, poor in vivo stability, low permeability, frequent parenteral administrations and poor adherence to treatment in chronic diseases. A sustained release system, providing controlled release of proteins, may overcome many of these limitations. AREAS COVERED This review focuses on recent development in approaches, especially polymer-based formulations, which can provide therapeutic levels of proteins over extended periods. Advances in particulate, gel-based formulations and novel approaches for extended protein delivery are discussed. Emphasis is placed on dosage form, method of preparation, mechanism of release and stability of biotherapeutics. EXPERT OPINION Substantial advancements have been made in the field of extended protein delivery via various polymer-based formulations over last decade despite the unique delivery-related challenges posed by protein biologics. A number of injectable sustained-release formulations have reached market. However, therapeutic application of proteins is still hampered by delivery-related issues. A large number of protein molecules are under clinical trials, and hence, there is an urgent need to develop new methods to deliver these highly potent biologics.
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Affiliation(s)
- Ravi Vaishya
- University of Missouri-Kansas City, Pharmaceutical Sciences , Kansas City, MO , USA
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17
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Dou QQ, Liow SS, Ye E, Lakshminarayanan R, Loh XJ. Biodegradable thermogelling polymers: working towards clinical applications. Adv Healthc Mater 2014; 3:977-88. [PMID: 24488805 DOI: 10.1002/adhm.201300627] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/04/2013] [Indexed: 11/08/2022]
Abstract
As society ages, aging medical problems such as organ damage or failure among senior citizens increases, raising the demand for organ repair technologies. Synthetic materials have been developed and applied in various parts of human body to meet the biomedical needs. Hydrogels, in particular, have found extensive applications as wound healing, drug delivery and controlled release, and scaffold materials in the human body. The development of the next generation of soft hydrogel biomaterials focuses on facile synthetic methods, efficacy of treatment, and tunable multi-functionalities for applications. Supramolecular 3D entities are highly attractive materials for biomedical application. They are assembled by modules via various non-covalent bonds (hydrogen bonds, p-p stacking and/or van der Waals interactions). Biodegradable thermogels are a class of such supramolecular assembled materials. Their use as soft biomaterials and their related applications are described in this Review.
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Affiliation(s)
- Qing Qing Dou
- Institute of Materials Research and Engineering (IMRE); 3 Research Link Singapore 117602 Singapore
| | - Sing Shy Liow
- Institute of Materials Research and Engineering (IMRE); 3 Research Link Singapore 117602 Singapore
| | - Enyi Ye
- Institute of Materials Research and Engineering (IMRE); 3 Research Link Singapore 117602 Singapore
| | | | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE); 3 Research Link Singapore 117602 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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18
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Boffito M, Sirianni P, Di Rienzo AM, Chiono V. Thermosensitive block copolymer hydrogels based on poly(ɛ-caprolactone) and polyethylene glycol for biomedical applications: State of the art and future perspectives. J Biomed Mater Res A 2014; 103:1276-90. [DOI: 10.1002/jbm.a.35253] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 05/15/2014] [Accepted: 06/02/2014] [Indexed: 01/28/2023]
Affiliation(s)
- Monica Boffito
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Paolo Sirianni
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Anna Maria Di Rienzo
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
| | - Valeria Chiono
- Department of Mechanical and Aerospace Engineering; Politecnico di Torino; Corso Duca degli Abruzzi 24 Turin Italy
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