51
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Luan J, Shen W, Chen C, Lei K, Yu L, Ding J. Selenium-containing thermogel for controlled drug delivery by coordination competition. RSC Adv 2015. [DOI: 10.1039/c5ra22307e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A coordination-responsive selenium-containing thermogel was designed and synthesized for controlled cisplatin delivery by competitive coordination of glutathione, which broadens the strategy of tuning drug release using thermogelling systems.
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Affiliation(s)
- Jiabin Luan
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Wenjia Shen
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Chang Chen
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Kewen Lei
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
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52
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Yuan B, He C, Dong X, Wang J, Gao Z, Wang Q, Tian H, Chen X. 5-Fluorouracil loaded thermosensitive PLGA–PEG–PLGA hydrogels for the prevention of postoperative tendon adhesion. RSC Adv 2015. [DOI: 10.1039/c5ra01307k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermosensitive PLGA–PEG–PLGA hydrogels containing 5-fluorouracil were applied to cover the sutured Achilles tendon of rats, leading to a significant reduction in adhesion formation during the tendon healing.
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Affiliation(s)
- Baoming Yuan
- Department of Orthopaedics
- China-Japan Union Hospital of Jilin University
- Changchun 130033
- P. R. China
| | - Chaoliang He
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xiaoming Dong
- Department of Orthopaedics
- The Second Hospital of Jilin University
- Changchun 130041
- P. R. China
| | - Jincheng Wang
- Department of Orthopaedics
- The Second Hospital of Jilin University
- Changchun 130041
- P. R. China
| | - Zhongli Gao
- Department of Orthopaedics
- China-Japan Union Hospital of Jilin University
- Changchun 130033
- P. R. China
| | - Qian Wang
- Department of Otolaryngology-Head and Neck Surgery
- The First Hospital of Jilin University
- Changchun
- P. R. China
| | - Huayu Tian
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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53
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Lee ALZ, Venkataraman S, Fox CH, Coady DJ, Frank CW, Hedrick JL, Yang YY. Modular composite hydrogels from cholesterol-functionalized polycarbonates for antimicrobial applications. J Mater Chem B 2015; 3:6953-6963. [DOI: 10.1039/c5tb00811e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A modular and versatile approach of mixing pre-optimized functional components with ABA-triblock gelators to access drug-loaded or antimicrobial gel is presented.
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Affiliation(s)
- Ashlynn L. Z. Lee
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
| | | | - Courtney H. Fox
- Department of Chemical Engineering
- Stanford University
- Stanford
- USA
| | | | - Curtis W. Frank
- Department of Chemical Engineering
- Stanford University
- Stanford
- USA
| | | | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
- Singapore
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54
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Lei K, Shen W, Cao L, Yu L, Ding J. An injectable thermogel with high radiopacity. Chem Commun (Camb) 2015; 51:6080-3. [DOI: 10.1039/c5cc00049a] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An injectable thermogel with high X-ray opacity was designed and synthesized for the first time and such a system shows great potential in non-invasive diagnosis and therapy.
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Affiliation(s)
- Kewen Lei
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Wenjia Shen
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Luping Cao
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
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55
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Shen W, Luan J, Cao L, Sun J, Yu L, Ding J. Thermogelling polymer-platinum(IV) conjugates for long-term delivery of cisplatin. Biomacromolecules 2014; 16:105-15. [PMID: 25435165 DOI: 10.1021/bm501220a] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, we suggest a novel strategy of constituting an in situ-formed hydrogel composed of polymer-platinum(IV) conjugate to realize a long-term delivery of cisplatin. A unique conjugate was designed and synthesized by covalent linking of Pt(IV) complex to the hydrophobic end of two methoxyl poly(ethylene glycol)-b-poly(d,l-lactide) (mPEG-PLA) copolymer chains, resulting in the formation of Bi(mPEG-PLA)-Pt(IV). The conjugate could self-assemble into micelles in water, and its concentrated solution exhibited a thermoreversible sol-gel transition and formed a semisolid thermogel at body temperature. The incorporation of the cisplatin analogue Pt(IV) prodrug into the conjugate had a significant influence on its thermogelling properties and the conjugate thermogelation was attributed to the micellar aggregation. In vitro release experiments of Pt(IV)-conjugated thermogel showed that the platinum release lasted as long as two months. Furthermore, we demonstrated that the Pt(IV) prodrug was released mainly in the form of micelles and micellar aggregates from the gel depot. Compared with free cisplatin, the formation of conjugate micelles led to the enhanced in vitro cytotoxicity against cancer cells due to the effective accumulation into cells via endocytosis.
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Affiliation(s)
- Wenjia Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
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56
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Tan H, Fan M, Ma Y, Qiu J, Li X, Yan J. Injectable gel scaffold based on biopolymer microspheres via an enzymatic reaction. Adv Healthc Mater 2014; 3:1769-75. [PMID: 24833514 DOI: 10.1002/adhm.201400123] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 03/21/2014] [Indexed: 01/06/2023]
Affiliation(s)
- Huaping Tan
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Ming Fan
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Ye Ma
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Jiacai Qiu
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Xianming Li
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Jingxuan Yan
- School of Materials Science and Engineering; Nanjing University of Science and Technology; Nanjing 210094 China
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57
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Zhang YB, Ding JX, Xu WG, Wu J, Chang F, Zhuang XL, Chen XS, Wang JC. Biodegradable thermogel as culture matrix of bone marrow mesenchymal stem cells for potential cartilage tissue engineering. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1551-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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58
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Ma H, He C, Cheng Y, Li D, Gong Y, Liu J, Tian H, Chen X. PLK1shRNA and doxorubicin co-loaded thermosensitive PLGA-PEG-PLGA hydrogels for osteosarcoma treatment. Biomaterials 2014; 35:8723-34. [PMID: 25017095 DOI: 10.1016/j.biomaterials.2014.06.045] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 06/22/2014] [Indexed: 02/02/2023]
Abstract
Combination cancer therapy has emerged as crucial approach for achieving superior anti-cancer efficacy. In this study, we developed a strategy by localized co-delivery of PLK1shRNA/polylysine-modified polyethylenimine (PEI-Lys) complexes and doxorubicin (DOX) using biodegradable, thermosensitive PLGA-PEG-PLGA hydrogels for treatment of osteosarcoma. When incubated with osteosarcoma Saos-2 and MG-63 cells, the hydrogel containing PLK1shRNA/PEI-Lys and DOX displayed significant synergistic effects in promoting the apoptosis of osteosarcoma cells in vitro. After subcutaneous injection of the hydrogel containing PLK1shRNA/PEI-Lys and DOX beside the tumors of nude mice bearing osteosarcoma Saos-2 xenografts, the hydrogels exhibited superior antitumor efficacy in vivo compared to the hydrogels loaded with PLK1shRNA/PEI-Lys or DOX alone. It is noteworthy that the combination treatment in vivo led to almost complete suppression of tumor growth up to 16 days, significantly enhanced PLK1 silencing, higher apoptosis of tumor masses, as well as increased cell cycle regulation. Additionally, ex vivo histological analysis of major organs of the mice indicated that the localized treatments showed no obvious damage to the organs, suggesting lower systemic toxicity of the treatments. Therefore, the strategy of localized, sustained co-delivery of PLK1shRNA and DOX by using the biodegradable, injectable hydrogel may have potential for efficient clinical treatment of osteosarcoma.
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Affiliation(s)
- Hecheng Ma
- Department of Orthopaedics, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, China
| | - Chaoliang He
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Yilong Cheng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Dongsong Li
- Department of Orthopaedics, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, China
| | - Yubao Gong
- Department of Orthopaedics, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, China
| | - Jianguo Liu
- Department of Orthopaedics, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, China.
| | - Huayu Tian
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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59
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Chen L, Ci T, Li T, Yu L, Ding J. Effects of Molecular Weight Distribution of Amphiphilic Block Copolymers on Their Solubility, Micellization, and Temperature-Induced Sol–Gel Transition in Water. Macromolecules 2014. [DOI: 10.1021/ma501110p] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Liang Chen
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Tianyuan Ci
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Ting Li
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Lin Yu
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Jiandong Ding
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
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60
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Yu L, Xu W, Shen W, Cao L, Liu Y, Li Z, Ding J. Poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) thermogel as a novel submucosal cushion for endoscopic submucosal dissection. Acta Biomater 2014; 10:1251-8. [PMID: 24345554 DOI: 10.1016/j.actbio.2013.12.007] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 11/02/2013] [Accepted: 12/06/2013] [Indexed: 12/21/2022]
Abstract
Endoscopic submucosal dissection (ESD) is a clinical therapy for early stage neoplastic lesions in the gastrointestinal tract. It is, however, faced with a crucial problem: the high occurrence of perforation. The formation of a submucosal fluid cushion (SFC) via a fluid injection is the best way to avoid perforation, and thus an appropriate biomaterial is vital for this minimally invasive endoscopic technique. In this study, we introduced an injectable thermogel as a novel submucosal injection substance in ESD. The hydrogel synthesized by us was composed of poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) triblock copolymers. The polymer/water system was a low-viscosity fluid at room temperature and thus easily injected, and turned into a non-flowing gel at body temperature after injection. The submucosal injection of the thermogel to create SFCs was performed in both resected porcine stomachs and living minipigs. High mucosal elevation with a clear margin was maintained for a long duration. Accurate en bloc resection was achieved with the assistance of the thermogel. The mean procedure time was strikingly reduced. Meanwhile, no obvious bleeding, perforation and tissue damage were observed. The application of the thermogel not only facilitated the ESD procedure, but also increased the efficacy and safety of ESD. Therefore, the PLGA-PEG-PLGA thermogel provides an excellent submucosal injection system, and has great potential to improve the ESD technique significantly.
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61
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Shao H, Wang CF, Zhang J, Chen S. Fabrication of Reversible Phase Transition Polymer Gels toward Metal Ion Sensing. Macromolecules 2014. [DOI: 10.1021/ma402424f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Huan Shao
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Cai-Feng Wang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Jing Zhang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
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62
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Fang DL, Chen Y, Xu B, Ren K, He ZY, He LL, Lei Y, Fan CM, Song XR. Development of lipid-shell and polymer core nanoparticles with water-soluble salidroside for anti-cancer therapy. Int J Mol Sci 2014; 15:3373-88. [PMID: 24573250 PMCID: PMC3975343 DOI: 10.3390/ijms15033373] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 01/23/2014] [Accepted: 02/06/2014] [Indexed: 02/05/2023] Open
Abstract
Salidroside (Sal) is a potent antitumor drug with high water-solubility. The clinic application of Sal in cancer therapy has been significantly restricted by poor oral absorption and low tumor cell uptake. To solve this problem, lipid-shell and polymer-core nanoparticles (Sal-LPNPs) loaded with Sal were developed by a double emulsification method. The processing parameters including the polymer types, organic phase, PVA types and amount were systemically investigated. The obtained optimal Sal-LPNPs, composed of PLGA-PEG-PLGA triblock copolymers and lipids, had high entrapment efficiency (65%), submicron size (150 nm) and negatively charged surface (−23 mV). DSC analysis demonstrated the successful encapsulation of Sal into LPNPs. The core-shell structure of Sal-LPNPs was verified by TEM. Sal released slowly from the LPNPs without apparent burst release. MTT assay revealed that 4T1 and PANC-1 cancer cell lines were sensitive to Sal treatment. Sal-LPNPs had significantly higher antitumor activities than free Sal in 4T1 and PANC-1 cells. The data indicate that LPNPs are a promising Sal vehicle for anti-cancer therapy and worthy of further investigation.
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Affiliation(s)
- Dai-Long Fang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Yan Chen
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Bei Xu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Ke Ren
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Zhi-Yao He
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Li-Li He
- College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, Sichuan, China.
| | - Yi Lei
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Chun-Mei Fan
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Xiang-Rong Song
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
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63
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Li T, Ci T, Chen L, Yu L, Ding J. Salt-induced reentrant hydrogel of poly(ethylene glycol)–poly(lactide-co-glycolide) block copolymers. Polym Chem 2014. [DOI: 10.1039/c3py01107k] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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64
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Chen C, Chen L, Cao L, Shen W, Yu L, Ding J. Effects of l-lactide and d,l-lactide in poly(lactide-co-glycolide)-poly(ethylene glycol)-poly(lactide-co-glycolide) on the bulk states of triblock copolymers, and their thermogellation and biodegradation in water. RSC Adv 2014. [DOI: 10.1039/c3ra47494a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In this study, the effects of l-lactide and d,l-lactide on the thermogelling and biodegradation behaviors of PLGA-PEG-PLGA copolymers were revealed.
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Affiliation(s)
- Chang Chen
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
| | - Lin Chen
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
| | - Luping Cao
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
| | - Wenjia Shen
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
| | - Lin Yu
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
| | - Jiandong Ding
- State key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Laboratory of Advanced Materials
- Fudan University
- Shanghai, P.R. China
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65
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Yu L, Hu H, Chen L, Bao X, Li Y, Chen L, Xu G, Ye X, Ding J. Comparative studies of thermogels in preventing post-operative adhesions and corresponding mechanisms. Biomater Sci 2014; 2:1100-1109. [PMID: 32482005 DOI: 10.1039/c4bm00029c] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Thermogelling PLGA–PEG–PLGA, PCGA–PEG–PCGA, and PCL–PEG–PCL triblock copolymers and their efficacies of prevention of post-surgical peritoneal adhesions in rabbits were investigated and compared.
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Affiliation(s)
- Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433, China
| | - Hongtao Hu
- Department of Orthopedic Surgery
- Changzheng Hospital
- Second Military Medical University of the Chinese People's Liberation Army
- Shanghai 200003, China
| | - Lin Chen
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433, China
| | - Xiaogang Bao
- Department of Orthopedic Surgery
- Changzheng Hospital
- Second Military Medical University of the Chinese People's Liberation Army
- Shanghai 200003, China
| | - Yuzhuo Li
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433, China
| | - Liang Chen
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433, China
| | - Guohua Xu
- Department of Orthopedic Surgery
- Changzheng Hospital
- Second Military Medical University of the Chinese People's Liberation Army
- Shanghai 200003, China
| | - Xiaojian Ye
- Department of Orthopedic Surgery
- Changzheng Hospital
- Second Military Medical University of the Chinese People's Liberation Army
- Shanghai 200003, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433, China
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66
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Zhao XY, Sun L, Wang MZ, Sun ZY, Xie J. Review of crosslinked and non-crosslinked copolyesters for tissue engineering and drug delivery. POLYM INT 2013. [DOI: 10.1002/pi.4658] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Xiong-Yan Zhao
- State Key Laboratory Breeding Base − Hebei Key Province Laboratory of Molecular Chemistry for Drugs; Shijiazhuang 050018 People's Republic of China
- College of Material Science and Engineering; Hebei University of Science and Technology; Shijiazhuang 050018 People's Republic of China
| | - Lu Sun
- College of Material Science and Engineering; Hebei University of Science and Technology; Shijiazhuang 050018 People's Republic of China
| | - Ming-Zhu Wang
- State Key Laboratory Breeding Base − Hebei Key Province Laboratory of Molecular Chemistry for Drugs; Shijiazhuang 050018 People's Republic of China
| | - Zhan-Ying Sun
- College of Material Science and Engineering; Hebei University of Science and Technology; Shijiazhuang 050018 People's Republic of China
| | - Jiang Xie
- Institute of Chemistry; Chinese Academy of Sciences (ICCAS); Beijing 100080 People's Republic of China
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67
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Yu L, Li K, Liu X, Chen C, Bao Y, Ci T, Chen Q, Ding J. In Vitro and In Vivo Evaluation of a Once-weekly Formulation of an Antidiabetic Peptide Drug Exenatide in an Injectable Thermogel. J Pharm Sci 2013; 102:4140-9. [DOI: 10.1002/jps.23735] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/15/2013] [Accepted: 09/03/2013] [Indexed: 01/11/2023]
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68
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Yao X, Peng R, Ding J. Cell-material interactions revealed via material techniques of surface patterning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5257-5286. [PMID: 24038153 DOI: 10.1002/adma.201301762] [Citation(s) in RCA: 358] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/15/2013] [Indexed: 06/02/2023]
Abstract
Cell-material interactions constitute a key fundamental topic in biomaterials study. Various cell cues and matrix cues as well as soluble factors regulate cell behaviors on materials. These factors are coupled with each other as usual, and thus it is very difficult to unambiguously elucidate the role of each regulator. The recently developed material techniques of surface patterning afford unique ways to reveal the underlying science. This paper reviews the pertinent material techniques to fabricate patterns of microscale and nanoscale resolutions, and corresponding cell studies. Some issues are emphasized, such as cell localization on patterned surfaces of chemical contrast, and effects of cell shape, cell size, cell-cell contact, and seeding density on differentiation of stem cells. Material cues to regulate cell adhesion, cell differentiation and other cell events are further summed up. Effects of some physical properties, such as surface topography and matrix stiffness, on cell behaviors are also discussed; nanoscaled features of substrate surfaces to regulate cell fate are summarized as well. The pertinent work sheds new insight into the cell-material interactions, and is stimulating for biomaterial design in regenerative medicine, tissue engineering, and high-throughput detection, diagnosis, and drug screening.
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Affiliation(s)
- Xiang Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, 200433, Shanghai, China
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69
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Yeon B, Park MH, Moon HJ, Kim SJ, Cheon YW, Jeong B. 3D Culture of Adipose-Tissue-Derived Stem Cells Mainly Leads to Chondrogenesis in Poly(ethylene glycol)-Poly(l-alanine) Diblock Copolymer Thermogel. Biomacromolecules 2013; 14:3256-66. [DOI: 10.1021/bm400868j] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Bora Yeon
- Department of Chemistry
and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Min Hee Park
- Department of Chemistry
and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Hyo Jung Moon
- Department of Chemistry
and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Seung-Jin Kim
- Department of Chemistry
and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Young Woo Cheon
- Department of Plastic
and Reconstructive Surgery, Gachon University Gil Medical Center, Incheon, Korea
| | - Byeongmoon Jeong
- Department of Chemistry
and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
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70
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Petit A, Müller B, Meijboom R, Bruin P, van de Manakker F, Versluijs-Helder M, de Leede LGJ, Doornbos A, Landin M, Hennink WE, Vermonden T. Effect of Polymer Composition on Rheological and Degradation Properties of Temperature-Responsive Gelling Systems Composed of Acyl-Capped PCLA-PEG-PCLA. Biomacromolecules 2013; 14:3172-82. [DOI: 10.1021/bm400804w] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Audrey Petit
- InGell Laboratories BV, Groningen, The Netherlands
- Department of Pharmaceutics,
Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Benno Müller
- InGell Laboratories BV, Groningen, The Netherlands
| | | | - Peter Bruin
- InGell Laboratories BV, Groningen, The Netherlands
| | | | - Marjan Versluijs-Helder
- Department of Inorganic Chemistry
and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | | | - Albert Doornbos
- Innocore Technology BV, Zernike Park 6−8, 9747 AN Groningen, The
Netherlands
| | - Mariana Landin
- Departamento
de Farmacia y Tecnología
Farmacéutica, Facultad de Farmacia, Universidad de Santiago, Campus Vida 15782 Santiago de Compostela,
Spain
| | - Wim E. Hennink
- Department of Pharmaceutics,
Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics,
Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
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71
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Xu Y, Shen Y, Xiong Y, Li C, Sun C, Ouahab A, Tu J. Synthesis, characterization, biodegradability and biocompatibility of a temperature-sensitive PBLA-PEG-PBLA hydrogel as protein delivery system with low critical gelation concentration. Drug Dev Ind Pharm 2013; 40:1264-75. [PMID: 23855735 DOI: 10.3109/03639045.2013.814066] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Temperature-sensitive hydrogels were designed using a series of A-B-A triblock copolymers consisting of poly (ethylene glycol) (PEG) with different molecular weights as the hydrophilic block B and poly (β-butyrolactone-co-lactic acid)(PBLA) with varying block lengths and composition as the hydrophobic block A. The triblock copolymers were synthesized by ring-opening polymerization (ROP) of β-BL and LA in bulk using PEG as an initiator and Sn(Oct)2 as the catalyst. Their chemical structure and molecular characteristics were determined by NMR, GPC and DSC, and the relationship between structure and phase behaviors in aqueous solutions was investigated as well. It was found that the phase behaviors in aqueous solutions including critical micelle concentration (CMC), sol-gel-sedimentation phase transition temperature, gel window width and critical gelation concentration (CGC) are largely dependent on the molecular weight and block length ratio of PEG/PBLA. Most importantly, they show a very low CGC ranging from 4 to 8 wt% because of the introduction of β-BL. Furthermore, the biodegradability and biocompatibility of the hydrogels were evaluated. Finally, lysozyme as a model protein was used to evaluate the ability to deliver protein drugs in a sustained release manner and biologically active form. All results demonstrated that the temperature-sensitive in situ forming hydrogel has a promising potential as sustained delivery system for protein drugs.
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Affiliation(s)
- Yourui Xu
- Department of Pharmaceutics, China Pharmaceutical University , Nanjing , China
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72
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Rheology and phase behavior of thermo-reversible pentablock terpolymer hydrogel. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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73
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Jung YK, Park MH, Moon HJ, Shinde UP, Jeong B. Changes in Nanoassembly of Oligocaprolactone End-Capped Pluronic F127 and the Abnormal Hydrophobicity Trend of Phase Transition. Macromolecules 2013. [DOI: 10.1021/ma400268r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yu Kyung Jung
- Department of Chemistry
and Nano Science, Department
of Bioinspired Science (WCU), Global Top 5 Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul 120-750, Korea
| | - Min Hee Park
- Department of Chemistry
and Nano Science, Department
of Bioinspired Science (WCU), Global Top 5 Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul 120-750, Korea
| | - Hyo Jung Moon
- Department of Chemistry
and Nano Science, Department
of Bioinspired Science (WCU), Global Top 5 Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul 120-750, Korea
| | - Usha Pramod Shinde
- Department of Chemistry
and Nano Science, Department
of Bioinspired Science (WCU), Global Top 5 Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul 120-750, Korea
| | - Byeongmoon Jeong
- Department of Chemistry
and Nano Science, Department
of Bioinspired Science (WCU), Global Top 5 Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu,
Seoul 120-750, Korea
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74
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75
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Li K, Yu L, Liu X, Chen C, Chen Q, Ding J. A long-acting formulation of a polypeptide drug exenatide in treatment of diabetes using an injectable block copolymer hydrogel. Biomaterials 2013; 34:2834-42. [PMID: 23352120 DOI: 10.1016/j.biomaterials.2013.01.013] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 01/03/2013] [Indexed: 12/12/2022]
Abstract
This study is aimed to develop a long-acting injectable formulation in treatment of type II diabetes. A glucoregulatory polypeptide, exenatide (EXT), was chosen as the model drug, and an aqueous block copolymer system with a sol-gel transition upon the increase of temperature was selected as the delivery matrix of EXT. The thermoreversible hydrogel composed of poly(lactic acid-co-glycolic acid)-poly(ethylene glycol)-poly(lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) triblock copolymers was found to slower the degradation of the polypeptide to a large extent. However, the initial formulation in this study exhibited a significant drug burst effect, which is a common problem to load a hydrophilic small or medium-size polypeptide into a hydrogel. Zinc acetate was then introduced to slow down the EXT release by formation of insoluble Zn-EXT complexes in the thermogel matrix. Yet an incomplete release became another crucial problem, which is also common for peptide and protein delivery. The synergistic effect of three excipients (zinc acetate, PEG, and sucrose) under an appropriate condition overcame these two problems simultaneously, and the sustained release of drug lasted for 1 week. In vivo experiments via mice oral glucose tolerance tests demonstrated an improved glucose tolerance for 1 week after a single subcutaneous injection of the optimal EXT formulation. As a result, a formulation of antidiabetic drugs was set up, and meanwhile a strategy using synergistic excipients to adjust release profiles of peptides from hydrogels was put forward.
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Affiliation(s)
- Kun Li
- National Pharmaceutical Engineering Research Center, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
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76
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Cheng Y, He C, Xiao C, Ding J, Cui H, Zhuang X, Chen X. Versatile Biofunctionalization of Polypeptide-Based Thermosensitive Hydrogels via Click Chemistry. Biomacromolecules 2013; 14:468-75. [DOI: 10.1021/bm3017059] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yilong Cheng
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, P. R.
China
| | - Chaoliang He
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
| | - Chunsheng Xiao
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
| | - Jianxun Ding
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, P. R.
China
| | - Haitao Cui
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, P. R.
China
| | - Xiuli Zhuang
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of
Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences,
Changchun 130022, P. R. China
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77
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Ci T, Chen L, Li T, Chang G, Yu L, Ding J. Effects of amphiphilic block copolymers on the equilibrium lactone fractions of camptothecin analogues at different pHs. Biomater Sci 2013; 1:1235-1243. [DOI: 10.1039/c3bm60152h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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78
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Yu L, Ci T, Zhou S, Zeng W, Ding J. The thermogelling PLGA–PEG–PLGA block copolymer as a sustained release matrix of doxorubicin. Biomater Sci 2013; 1:411-420. [DOI: 10.1039/c2bm00159d] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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79
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Petit A, Müller B, Bruin P, Meyboom R, Piest M, Kroon-Batenburg LM, de Leede LG, Hennink WE, Vermonden T. Modulating rheological and degradation properties of temperature-responsive gelling systems composed of blends of PCLA-PEG-PCLA triblock copolymers and their fully hexanoyl-capped derivatives. Acta Biomater 2012; 8:4260-7. [PMID: 22877819 DOI: 10.1016/j.actbio.2012.07.044] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/13/2012] [Accepted: 07/31/2012] [Indexed: 11/08/2022]
Abstract
In this study, the ability to modulate rheological and degradation properties of temperature-responsive gelling systems composed of aqueous blends of poly(ε-caprolactone-co-lactide)-b-poly(ethylene glycol)-b-poly(ε-caprolactone-co-lactide) (PCLA-PEG-PCLA) triblock copolymers (i.e. uncapped) and their fully capped derivatives was investigated. Uncapped and capped PCLA-PEG-PCLA triblock copolymers, abbreviated as degree of modification 0 and 2 (DM0 and DM2, respectively), were composed of identical PCLA and PEG blocks but different end groups: namely hydroxyl and hexanoyl end groups. DM0 was synthesized by ring opening polymerization of l-lactide and ε-caprolactone in toluene using PEG as initiator and tin(II) 2-ethylhexanoate as the catalyst. A portion of DM0 was subsequently reacted with an excess of hexanoyl chloride in solution to yield DM2. The cloud point and phase behaviour of DM0 and DM2 in buffer as well as that of their blends were determined by light scattering in a diluted state and by vial tilting and rheological measurements in a concentrated state. Degradation/dissolution properties of temperature-responsive gelling systems were studied in vitro at pH 7.4 and 37°C. The cloud points of DM0/DM2 blends were ratio-dependent and could be tailored from 15 to 40°C for blends containing 15 to 100wt.% DM0. Vial tilting and rheological experiments showed that, with solid contents between 20 and 30wt.%, DM0/DM2 blends (15/85 to 25/75w/w) had a sol-to-gel transition temperature at 10-20°C, whereas blends with less than 15wt.% DM0 formed gels below 4°C and the ones with more than 25wt.% DM0 did not show a sol-to-gel transition up to 50°C. Complete degradation of temperature-responsive gelling systems took ∼100days, independent of the DM0 fraction and the initial solid content. Analysis of residual gels in time by GPC and (1)H-NMR showed no chemical polymer degradation, but indicated gel degradation by dissolution. Preferential dissolution of lactoyl-rich polymers induced enrichment of the residual gels in caproyl-rich polymers. To the best of our knowledge, degradation of temperature-responsive gelling systems by dissolution has not been reported or hypothesized as being the consequence of acylation of polymers. In conclusion, blending of PCLA-PEG-PCLA triblock polymers composed of identical backbones but different end groups provides for a straightforward preparation of temperature-responsive gelling systems with well-characterized rheological properties and potential in drug delivery. Furthermore, acylation of triblock copolymers may allow for the design of bioerodible systems with control over degradation by polymer dissolution.
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80
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Yu L, Sheng W, Yang D, Ding J. Design of molecular parameters to achieve block copolymers with a powder form at dry state and a temperature-induced sol-gel transition in water without unexpected gelling prior to heating. Macromol Res 2012. [DOI: 10.1007/s13233-013-1021-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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81
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Lian S, Xiao Y, Bian Q, Xia Y, Guo C, Wang S, Lang M. Injectable hydrogel as stem cell scaffolds from the thermosensitive terpolymer of NIPAAm/AAc/HEMAPCL. Int J Nanomedicine 2012; 7:4893-905. [PMID: 23028218 PMCID: PMC3446841 DOI: 10.2147/ijn.s32645] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A series of biodegradable thermosensitive copolymers was synthesized by free radical polymerization with N-isopropylacrylamide (NIPAAm), acrylic acid (AAc) and macromer 2-hydroxylethyl methacrylate-poly(ɛ-caprolactone) (HEMAPCL). The structure and composition of the obtained terpolymers were confirmed by proton nuclear magnetic resonance spectroscopy, while their molecular weight was measured using gel permeation chromatography. The copolymers were dissolved in phosphate-buffered saline (PBS) solution (pH = 7.4) with different concentrations to prepare hydrogels. The lower critical solution temperature (LCST), cloud point, and rheological property of the hydrogels were determined by differential scanning calorimetry, ultraviolet-visible spectrometry, and rotational rheometry, respectively. It was found that LCST of the hydrogel increased significantly with the increasing NIPAAm content, and hydrogel with higher AAc/HEMAPCL ratio exhibited better storage modulus, water content, and injectability. The hydrogels were formed by maintaining the copolymer solution at 37°C. The degradation experiment on the formed hydrogels was conducted in PBS solution for 2 weeks and demonstrated a less than 20% weight loss. Scanning electron microscopy was also used to study the morphology of the hydrogel. The copolymer with NIPAAm/AAc/HEMAPCL ratio of 88:9.6:2.4 was bioconjugated with type I collagen for the purpose of biocompatibility enhancement. In-vitro cytotoxicity of the hydrogels both with and without collagen was also addressed.
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Affiliation(s)
- Sheng Lian
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
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82
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Cheng Y, He C, Xiao C, Ding J, Zhuang X, Huang Y, Chen X. Decisive Role of Hydrophobic Side Groups of Polypeptides in Thermosensitive Gelation. Biomacromolecules 2012; 13:2053-9. [DOI: 10.1021/bm3004308] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yilong Cheng
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, People's
Republic of China
| | - Chaoliang He
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Chunsheng Xiao
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Jianxun Ding
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, People's
Republic of China
| | - Xiuli Zhuang
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Yubin Huang
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Xuesi Chen
- Key Laboratory
of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
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83
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Kang EY, Moon HJ, Joo MK, Jeong B. Thermogelling Chitosan-g-(PAF-PEG) Aqueous Solution As an Injectable Scaffold. Biomacromolecules 2012; 13:1750-7. [DOI: 10.1021/bm300085c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Eun Young Kang
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Hyo Jung Moon
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Min Kyung Joo
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Byeongmoon Jeong
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
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84
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85
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Yao B, Zhu Q, Liu H, Qiao L, Hao J, Qi F. Conformation and aggregation behavior of poly(ethylene glycol)-b-poly(lactic acid) amphiphilic copolymer chains in dilute/semidilute THF solutions. J Appl Polym Sci 2012. [DOI: 10.1002/app.36613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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86
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Yun EJ, Yon B, Joo MK, Jeong B. Cell Therapy for Skin Wound Using Fibroblast Encapsulated Poly(ethylene glycol)-poly(l-alanine) Thermogel. Biomacromolecules 2012; 13:1106-11. [DOI: 10.1021/bm2018596] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Eun Jung Yun
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Bora Yon
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Min Kyung Joo
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Byeongmoon Jeong
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
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87
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Zou P, Suo J, Nie L, Feng S. Temperature-sensitive biodegradable mixed star-shaped block copolymers hydrogels for an injection application. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.01.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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88
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Yu L, Zhang Z, Ding J. In vitro degradation and protein release of transparent and opaque physical hydrogels of block copolymers at body temperature. Macromol Res 2012. [DOI: 10.1007/s13233-012-0049-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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89
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Moon HJ, Ko DY, Park MH, Joo MK, Jeong B. Temperature-responsive compounds as in situ gelling biomedical materials. Chem Soc Rev 2012; 41:4860-83. [DOI: 10.1039/c2cs35078e] [Citation(s) in RCA: 334] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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90
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Chang G, Yu L, Ding J. A smart polymer for drug delivery sensitive to tumor extracellular pH. J Control Release 2011; 152 Suppl 1:e4-5. [DOI: 10.1016/j.jconrel.2011.08.086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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91
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Chang G, Ci T, Yu L, Ding J. Enhancement of the fraction of the active form of an antitumor drug topotecan via an injectable hydrogel. J Control Release 2011; 156:21-7. [PMID: 21777632 DOI: 10.1016/j.jconrel.2011.07.008] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2011] [Revised: 06/14/2011] [Accepted: 07/05/2011] [Indexed: 11/29/2022]
Abstract
Poly(D,L-lactic acid-co-glycolic acid)-b-poly(ethylene glycol)-b-poly(D,L-lactic acid-co-glycolic acid) (PLGA-PEG-PLGA) hydrogels were tried as implants to encapsulate antitumor drug topotecan (TPT), a derivative of camptothecin (CPT). Despite of water solubility of TPT, the in vitro release of this low-molecular-weight drug from hydrogels sustained for 5 days with only a mild initial burst. The antitumor efficacy of the released TPT was further validated in S180-bearing mice. Surprisingly, the fraction of the active lactone form of TPT was increased to above 50% in the hydrogel matrix, while the fraction was just about 10% in phosphate buffer saline under physiological pH at 37°C. This significant effect was interpreted not by the local acidic pH within the hydrogel, but by the increase of pK(a) of the carboxylate group of the open-ring form due to the hydrophobic interaction between the amphiphilic polymer and TPT. Theoretical analysis via a pK(a)-related mechanism was also performed, which was consistent with our experimental measurements. Hence, this study has revealed that an appropriate biomaterial could, via drug-material interactions, enhance the drug efficacy by increasing the active fraction of some drugs which exhibit a reversible conversion between the active and inactive structures.
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Affiliation(s)
- Guangtao Chang
- Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai, China
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92
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Wu X, El Ghzaoui A, Li S. Anisotropic self-assembling micelles prepared by the direct dissolution of PLA/PEG block copolymers with a high PEG fraction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8000-8008. [PMID: 21639089 DOI: 10.1021/la2014539] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A series of polylactide-poly(ethylene glycol) (PLA-PEG) block copolymers with a high PEG fraction were synthesized by the ring-opening polymerization of L- or D-lactide in the presence of mono- or dihydroxyl PEG using nontoxic zinc lactate as a catalyst. Micelles were then prepared by direct dissolution of the obtained water-soluble copolymers in an aqueous medium without heating or using any organic solvents. Large anisotropic micelles instead of conventional spherical ones were observed from a transmission electron microscopy examination. Various parameters influencing the structure of the novel micelles were considered, such as the copolymer chain structure, molar mass, PEG fraction, copolymer concentration, and stereocomplexation between L- and D-PLA blocks. Anisotropic micelles were obtained for both diblock and triblock copolymers but vanished with increasing molar mass of the copolymers. The morphology of micelles strongly depends on the PEG fraction. Anisotropic micelles were found only in an intermediate EO/LA ratio range in which a higher PEG fraction leads to a higher length/width ratio of micelles. Stereocomplexation between L- and D-PLA or a lower concentration disfavors the formation of anisotropic micelles. Under appropriate concentrations, spherical and anisotropic micelles coexist in the same micellar solution. Moreover, it was found that anisotropic micelles are susceptible to further self-assemble into more organized complex aggregates. Similar results were obtained from light scattering and aqueous gel permeation chromatography measurements. A novel model is proposed to explain the formation of anisotropic micelles and the effects of various parameters on the structure of micelles in an aqueous medium.
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Affiliation(s)
- Xiaohan Wu
- Max Mousseron Institute on Biomolecules, UMR CNRS 5247, University Montpellier I, 34060 Montpellier, France
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93
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Kim J, Lee Y, Singha K, Kim HW, Shin JH, Jo S, Han DK, Kim WJ. NONOates–Polyethylenimine Hydrogel for Controlled Nitric Oxide Release and Cell Proliferation Modulation. Bioconjug Chem 2011; 22:1031-8. [DOI: 10.1021/bc100405c] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jihoon Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yanggy Lee
- Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Seoul 130-650, Korea
| | - Kaushik Singha
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Hyun Woo Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jae Ho Shin
- Department of Chemistry, Kwangwoon University, Seoul 139-701, Korea
| | - Seongbong Jo
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Dong-Keun Han
- Biomaterials Research Center, Korea Institute of Science and Technology, P.O. Box 131, Seoul 130-650, Korea
| | - Won Jong Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
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94
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95
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96
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Biodegradable and thermoreversible PCLA-PEG-PCLA hydrogel as a barrier for prevention of post-operative adhesion. Biomaterials 2011; 32:4725-36. [PMID: 21482434 DOI: 10.1016/j.biomaterials.2011.03.046] [Citation(s) in RCA: 253] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Accepted: 03/20/2011] [Indexed: 11/21/2022]
Abstract
Biodegradable polymers can serve as barriers to prevent the post-operative intestinal adhesion. Herein, we synthesized a biodegradable triblock copolymer poly(ɛ-caprolactone-co-lactide)-b-poly(ethylene glycol)-b-poly(ɛ-caprolactone-co-lactide) (PCLA-PEG-PCLA). The concentrated polymeric aqueous solution was injectable, and a hydrogel could be rapidly formed due to percolation of a self-assembled micelle network at the body temperature without requirement of any chemical reactions. This physical hydrogel retained its integrity in vivo for a bit more than 6 weeks and was eventually degraded due to hydrolysis. The synthesized polymer exhibited little cytotoxicity and hemolysis; the acute inflammatory response after implanting the hydrogel was acceptable, and the degradation products were less acidic than those of other polyester-containing materials. A rabbit model of sidewall defect-bowel abrasion was employed, and a significant reduction of post-operative peritoneal adhesion has been found in the group of in situ formed PCLA-PEG-PCLA hydrogels.
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97
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Wang H, Hansen MB, Löwik DWPM, van Hest JCM, Li Y, Jansen JA, Leeuwenburgh SCG. Oppositely charged gelatin nanospheres as building blocks for injectable and biodegradable gels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:H119-24. [PMID: 21394793 DOI: 10.1002/adma.201003908] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 12/14/2010] [Indexed: 05/21/2023]
Affiliation(s)
- Huanan Wang
- Department of Biomaterials, Radboud University Nijmegen Medical Center, The Netherlands
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98
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Moon HJ, Choi BG, Park MH, Joo MK, Jeong B. Enzymatically Degradable Thermogelling Poly(alanine-co-leucine)-poloxamer-poly(alanine-co-leucine). Biomacromolecules 2011; 12:1234-42. [DOI: 10.1021/bm101518c] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hyo Jung Moon
- Department of Chemistry and Nano Science, Department of Bioinspired Science (WCU), Ewha Womans University, Daehyun-Dong, Seodaemun-Ku, Seoul, 120-750, Korea
| | - Bo Gyu Choi
- Department of Chemistry and Nano Science, Department of Bioinspired Science (WCU), Ewha Womans University, Daehyun-Dong, Seodaemun-Ku, Seoul, 120-750, Korea
| | - Min Hee Park
- Department of Chemistry and Nano Science, Department of Bioinspired Science (WCU), Ewha Womans University, Daehyun-Dong, Seodaemun-Ku, Seoul, 120-750, Korea
| | - Min Kyung Joo
- Department of Chemistry and Nano Science, Department of Bioinspired Science (WCU), Ewha Womans University, Daehyun-Dong, Seodaemun-Ku, Seoul, 120-750, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nano Science, Department of Bioinspired Science (WCU), Ewha Womans University, Daehyun-Dong, Seodaemun-Ku, Seoul, 120-750, Korea
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99
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Yu L, Zhang Z, Ding J. Influence of LA and GA Sequence in the PLGA Block on the Properties of Thermogelling PLGA-PEG-PLGA Block Copolymers. Biomacromolecules 2011; 12:1290-7. [DOI: 10.1021/bm101572j] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lin Yu
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Zheng Zhang
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Jiandong Ding
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
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100
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Yan C, Sun J, Ding J. Critical areas of cell adhesion on micropatterned surfaces. Biomaterials 2011; 32:3931-8. [PMID: 21356556 DOI: 10.1016/j.biomaterials.2011.01.078] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 01/19/2011] [Indexed: 12/20/2022]
Abstract
The adhesive area is important to modulate cell behaviors on a substrate. This paper aims to semi-quantitatively examine the existence of the characteristic areas of cell adhesion on the level of individual cells. We prepared a series of micropatterned surfaces with adhesive microislands of various sizes on an adhesion-resistant background, and cultured cells of MC3T3-E1 (osteoblast), BMSC (bone mesenchymal stem cell) or NIH3T3 (fibroblast) on those modeled surfaces. We have defined seven characteristic areas of an adhesive microisland and confirmed that they are meaningful to describe cell adhesion behaviors. Those parameters are (1) the critical adhesion area from apoptosis to survival denoted as A∗ or A(c₁), (2) the critical area from adhesion of a single cell to adhesion of multiple cells (A(c₂)), (3) the basic area for one more cell to adhere (A(Δ)), (4) and (5) the characteristic areas of a microisland most probably occupied by one cell (A(peak₁) and two cells (A(peak₂)), (6) and (7) the characteristic areas of a microisland occupied by one cell (A(N₁)) or two cells (A(N₂)) on average. Besides the introduction of those basic parameters, the present paper demonstrates how to determine them experimentally. We further discussed the relationship between those characteristic areas and the spreading area on a non-patterned adhesive surface.
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Affiliation(s)
- Ce Yan
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
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