51
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Hrynyk M, Ellis JP, Haxho F, Allison S, Steele JA, Abdulkhalek S, Neufeld RJ, Szewczuk MR. Therapeutic designed poly (lactic-co-glycolic acid) cylindrical oseltamivir phosphate-loaded implants impede tumor neovascularization, growth and metastasis in mouse model of human pancreatic carcinoma. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:4573-86. [PMID: 26309402 PMCID: PMC4539083 DOI: 10.2147/dddt.s90170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Poly (lactic-co-glycolic acid) (PLGA) copolymers have been extensively used in cancer research. PLGA can be chemically engineered for conjugation or encapsulation of drugs in a particle formulation. We reported that oseltamivir phosphate (OP) treatment of human pancreatic tumor-bearing mice disrupted the tumor vasculature with daily injections. Here, the controlled release of OP from a biodegradable PLGA cylinder (PLGA-OP) implanted at tumor site was investigated for its role in limiting tumor neovascularization, growth, and metastasis. PLGA-OP cylinders over 30 days in vitro indicated 20%–25% release profiles within 48 hours followed by a continuous metronomic low dose release of 30%–50% OP for an additional 16 days. All OP was released by day 30. Surgically implanted PLGA-OP containing 20 mg OP and blank PLGA cylinders at the tumor site of heterotopic xenografts of human pancreatic PANC1 tumors in RAGxCγ double mutant mice impeded tumor neovascularization, growth rate, and spread to the liver and lungs compared with the untreated cohort. Xenograft tumors from PLGA and PLGA-OP-treated cohorts expressed significant higher levels of human E-cadherin with concomitant reduced N-cadherin and host CD31+ endothelial cells compared with the untreated cohort. These results clearly indicate that OP delivered from PLGA cylinders surgically implanted at the site of the solid tumor show promise as an effective treatment therapy for cancer.
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Affiliation(s)
- Michael Hrynyk
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Jordon P Ellis
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Fiona Haxho
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Stephanie Allison
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Joseph Am Steele
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Samar Abdulkhalek
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Ronald J Neufeld
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada
| | - Myron R Szewczuk
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
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52
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Chen L, Ci T, Yu L, Ding J. Effects of Molecular Weight and Its Distribution of PEG Block on Micellization and Thermogellability of PLGA–PEG–PLGA Copolymer Aqueous Solutions. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00168] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Liang Chen
- State Key
Laboratory of Molecular Engineering of Polymers, Collaborative Innovation
Center of Polymers and Polymer Composite Materials, Department of
Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Tianyuan Ci
- State Key
Laboratory of Molecular Engineering of Polymers, Collaborative Innovation
Center of Polymers and Polymer Composite Materials, Department of
Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Lin Yu
- State Key
Laboratory of Molecular Engineering of Polymers, Collaborative Innovation
Center of Polymers and Polymer Composite Materials, Department of
Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Jiandong Ding
- State Key
Laboratory of Molecular Engineering of Polymers, Collaborative Innovation
Center of Polymers and Polymer Composite Materials, Department of
Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
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53
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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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54
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Li Z, Cao B, Wang X, Ye K, Li S, Ding J. Effects of RGD nanospacing on chondrogenic differentiation of mesenchymal stem cells. J Mater Chem B 2015; 3:5197-5209. [DOI: 10.1039/c5tb00455a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
RGD nanopatterns were generated on nonfouling PEG hydrogels to explore the effects of RGD nanospacing on adhesion and chondrogenic differentiation of mesenchymal stem cells.
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Affiliation(s)
- Zhenhua Li
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Bin Cao
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Xuan Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Kai Ye
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Shiyu Li
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- Advanced Materials Laboratory
- Fudan University
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55
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Cao L, Cao B, Lu C, Wang G, Yu L, Ding J. An injectable hydrogel formed by in situ cross-linking of glycol chitosan and multi-benzaldehyde functionalized PEG analogues for cartilage tissue engineering. J Mater Chem B 2014; 3:1268-1280. [PMID: 32264478 DOI: 10.1039/c4tb01705f] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this study, a multi-benzaldehyde functionalized poly(ethylene glycol) analogue, poly(ethylene oxide-co-glycidol)-CHO (poly(EO-co-Gly)-CHO), was designed and synthesized for the first time, and was applied as a cross-linker to develop an injectable hydrogel system. Simply mixing two aqueous precursor solutions of glycol chitosan (GC) and poly(EO-co-Gly)-CHO led to the formation of chemically cross-linked hydrogels under physiological conditions in situ. The cross-linking was attributed to a Schiff's base reaction between amino groups of GC and aldehyde groups of poly(EO-co-Gly)-CHO. The gelation time, water uptake, mechanical properties and network morphology of the GC/poly(EO-co-Gly) hydrogels were well modulated by varying the concentration of poly(EO-co-Gly)-CHO. Degradation of the in situ formed hydrogels was confirmed both in vitro and in vivo. The integrity of the GC/poly(EO-co-Gly) hydrogels was subcutaneously maintained for up to 12 weeks in ICR mice. The feasibility of encapsulating chondrocytes in the GC/poly(EO-co-Gly) hydrogels was assessed. Live/Dead staining assay demonstrated that the chondrocytes were highly viable in the hydrogels, and no dedifferentiation of chondrocytes was observed after 2 weeks of in vitro culture. Cell counting kit-8 assay gave evidence of the remarkably sustained proliferation of the encapsulated chondrocytes. Maintenance of the chondrocyte phenotype was also confirmed with an examination of characteristic gene expression. These features suggest that GC/poly(EO-co-Gly) hydrogels hold potential as an artificial extracellular matrix for cartilage tissue engineering.
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Affiliation(s)
- Luping Cao
- 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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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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57
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Peña B, Shandas R, Park D. A heparin-mimicking reverse thermal gel for controlled delivery of positively charged proteins. J Biomed Mater Res A 2014; 103:2102-8. [PMID: 25294242 DOI: 10.1002/jbm.a.35345] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/23/2014] [Accepted: 09/30/2014] [Indexed: 12/13/2022]
Abstract
Positively charged therapeutic proteins have been used extensively for biomedical applications. However, the safety and efficacy of proteins are mostly limited by their physical and chemical instability and short half-lives in physiological conditions. To this end, we created a heparin-mimicking sulfonated reverse thermal gel as a novel protein delivery system by sulfonation of a graft copolymer, poly(serinol hexamethylene urea)-co-poly(N-isopropylacylamide), or PSHU-NIPAAm. The net charge of the sulfonated PSHU-NIPAAm was negative due to the presence of sulfonate groups. The sulfonated PSHU-NIPAAm showed a typical temperature-dependent sol-gel phase transition, where polymer solutions turned to a physical gel at around 32°C and maintained gel status at body temperature. Both in vitro cytotoxicity tests using C2C12 myoblast cells and in vivo cytotoxicity tests by subcutaneous injections demonstrated excellent biocompatibility. In vitro release tests using bovine serum albumin revealed that the release from the sulfonated PSHU-NIPAAm was more sustained than that from the plain PSHU-NIPAAm. Furthermore, this sulfonated PSHU-NIPAAm system did not affect protein structure after 70-day observation periods.
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Affiliation(s)
- Brisa Peña
- Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, Aurora, Colorado, 80045
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58
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Ghaemy M, Ziaei S, Alizadeh R. Synthesis of pH-sensitive amphiphilic pentablock copolymers via combination of ring-opening and atom transfer radical polymerization for drug delivery. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.06.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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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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Thermosensitive in situ hydrogel based on the hybrid of hyaluronic acid and modified PCL/PEG triblock copolymer. Carbohydr Polym 2014; 108:26-33. [DOI: 10.1016/j.carbpol.2014.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/20/2014] [Accepted: 03/02/2014] [Indexed: 11/21/2022]
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61
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Effects of spreading areas and aspect ratios of single cells on dedifferentiation of chondrocytes. Biomaterials 2014; 35:6871-81. [DOI: 10.1016/j.biomaterials.2014.04.107] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Accepted: 04/27/2014] [Indexed: 12/14/2022]
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62
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Ci T, Chen L, Yu L, Ding J. Tumor regression achieved by encapsulating a moderately soluble drug into a polymeric thermogel. Sci Rep 2014; 4:5473. [PMID: 24980734 PMCID: PMC4076690 DOI: 10.1038/srep05473] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/04/2014] [Indexed: 12/14/2022] Open
Abstract
For cancer chemotherapy, a tumor regression without any surgical resection and severe side effects is greatly preferred to merely slowing down the growth of tumors. Here, we report a formulation composed of irinotecan (IRN) and poly(D,L-lactide-co-glycolide)-b-poly(ethylene glycol)-b-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA). IRN is a clinically used antitumor drug with active and inactive chemical forms in equilibrium, and the major form at physiological conditions is inactive but still has side effects. The aqueous solution of the PLGA-PEG-PLGA is a sol at room temperature and physically gels at body temperature, forming a thermogel. We successfully mixed this moderately soluble drug into the amphiphilic copolymer aqueous solution for the first time. The mixture was subcutaneously injected into nude mice with xenografted SW620 human colon tumors. Excellent in vivo antitumor efficacy was observed in the group that received the IRN-loaded thermogel. The tumor was significantly regressed after being treated with the IRN/thermogel, and the side effects (blood toxicity and body weight decrease) were very mild. These results might be attributed to the ideal sustained release profile and period of release of the drug from the thermogel and to the significant enhancement of the fraction of the active form of the drug by the thermogel.
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Affiliation(s)
- Tianyuan Ci
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Liang Chen
- 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
- Key Laboratory of Smart Drug Delivery of Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China
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63
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Xing J, Qi X, Jiang Y, Zhu X, Zhang Z, Qin X, Wu Z. Topotecan hydrochloride liposomes incorporated into thermosensitive hydrogel for sustained and efficientin situtherapy of H22 tumor in Kunming mice. Pharm Dev Technol 2014; 20:812-819. [DOI: 10.3109/10837450.2014.926918] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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64
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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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65
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Preparation of stable micropatterns of gold on cell-adhesion-resistant hydrogels assisted by a hetero-bifunctional macromonomer linker. Sci China Chem 2014. [DOI: 10.1007/s11426-013-5057-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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66
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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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67
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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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68
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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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69
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Reithofer MR, Chan KH, Lakshmanan A, Lam DH, Mishra A, Gopalan B, Joshi M, Wang S, Hauser CAE. Ligation of anti-cancer drugs to self-assembling ultrashort peptides by click chemistry for localized therapy. Chem Sci 2014. [DOI: 10.1039/c3sc51930a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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70
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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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71
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Pua ML, Yoshitomi T, Chonpathompikunlert P, Hirayama A, Nagasaki Y. Redox-active injectable gel using thermo-responsive nanoscale polyion complex flower micelle for noninvasive treatment of local inflammation. J Control Release 2013; 172:914-20. [DOI: 10.1016/j.jconrel.2013.10.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/03/2013] [Accepted: 10/06/2013] [Indexed: 12/26/2022]
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72
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Du X, Shi B, Liang J, Bi J, Dai S, Qiao SZ. Developing functionalized dendrimer-like silica nanoparticles with hierarchical pores as advanced delivery nanocarriers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5981-5985. [PMID: 23955990 DOI: 10.1002/adma.201302189] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/11/2013] [Indexed: 05/28/2023]
Abstract
Functionalized dendrimer-like hybrid silica nanoparticles with hierarchical pores are designed and synthesized. The unique structure, large surface area, and excellent biocompability render such materials attractive nanocarriers for the advanced delivery of various sized drugs and genes simultaneously.
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Affiliation(s)
- Xin Du
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA5005, Australia
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73
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74
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75
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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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76
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Alexander A, Ajazuddin, Khan J, Saraf S, Saraf S. Poly(ethylene glycol)-poly(lactic-co-glycolic acid) based thermosensitive injectable hydrogels for biomedical applications. J Control Release 2013; 172:715-29. [PMID: 24144918 DOI: 10.1016/j.jconrel.2013.10.006] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 10/02/2013] [Accepted: 10/04/2013] [Indexed: 01/17/2023]
Abstract
Stimuli triggered polymers provide a variety of applications related with the biomedical fields. Among various stimuli triggered mechanisms, thermoresponsive mechanisms have been extensively investigated, as they are relatively more convenient and effective stimuli for biomedical applications. In a contemporary approach for achieving the sustained action of proteins, peptides and bioactives, injectable depots and implants have always remained the thrust areas of research. In the same series, Poloxamer based thermogelling copolymers have their own limitations regarding biodegradability. Thus, there is a need to have an alternative biomaterial for the formulation of injectable hydrogel, which must remain biocompatible along with safety and efficacy. In the same context, poly(ethylene glycol) (PEG) based copolymers play a crucial role as a biomedical material for biomedical applications, because of their biocompatibility, biodegradability, thermosensitivity and easy controlled characters. This review stresses on the physicochemical property, stability and composition prospects of smart PEG/poly(lactic-co-glycolic acid) (PLGA) based thermoresponsive injectable hydrogels, recently utilized for biomedical applications. The manuscript also highlights the synthesis scheme and stability characteristics of these copolymers, which will surely help the researchers working in the same area. We have also emphasized the applied use of these smart copolymers along with their formulation problems, which could help in understanding the possible modifications related with these, to overcome their inherent associated limitations.
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Affiliation(s)
- Amit Alexander
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, C.G. 492010, India.
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77
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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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78
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Kharkar PM, Kiick KL, Kloxin AM. Designing degradable hydrogels for orthogonal control of cell microenvironments. Chem Soc Rev 2013; 42:7335-72. [PMID: 23609001 PMCID: PMC3762890 DOI: 10.1039/c3cs60040h] [Citation(s) in RCA: 471] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 12/12/2022]
Abstract
Degradable and cell-compatible hydrogels can be designed to mimic the physical and biochemical characteristics of native extracellular matrices and provide tunability of degradation rates and related properties under physiological conditions. Hence, such hydrogels are finding widespread application in many bioengineering fields, including controlled bioactive molecule delivery, cell encapsulation for controlled three-dimensional culture, and tissue engineering. Cellular processes, such as adhesion, proliferation, spreading, migration, and differentiation, can be controlled within degradable, cell-compatible hydrogels with temporal tuning of biochemical or biophysical cues, such as growth factor presentation or hydrogel stiffness. However, thoughtful selection of hydrogel base materials, formation chemistries, and degradable moieties is necessary to achieve the appropriate level of property control and desired cellular response. In this review, hydrogel design considerations and materials for hydrogel preparation, ranging from natural polymers to synthetic polymers, are overviewed. Recent advances in chemical and physical methods to crosslink hydrogels are highlighted, as well as recent developments in controlling hydrogel degradation rates and modes of degradation. Special attention is given to spatial or temporal presentation of various biochemical and biophysical cues to modulate cell response in static (i.e., non-degradable) or dynamic (i.e., degradable) microenvironments. This review provides insight into the design of new cell-compatible, degradable hydrogels to understand and modulate cellular processes for various biomedical applications.
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Affiliation(s)
- Prathamesh M. Kharkar
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
| | - Kristi L. Kiick
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
- Biomedical Engineering , University of Delaware , Newark , DE 19716 , USA
- Delaware Biotechnology Institute , University of Delaware , Newark , DE 19716 , USA
| | - April M. Kloxin
- Department of Materials Science and Engineering , University of Delaware , Newark , DE 19716 , USA . ;
- Department of Chemical and Biomolecular Engineering , University of Delaware , Newark , DE 19716 , USA
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79
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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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80
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Ci T, Li T, Chang G, Yu L, Ding J. Simply mixing with poly(ethylene glycol) enhances the fraction of the active chemical form of antitumor drugs of camptothecin family. J Control Release 2013; 169:329-35. [DOI: 10.1016/j.jconrel.2012.12.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Revised: 11/21/2012] [Accepted: 12/03/2012] [Indexed: 01/07/2023]
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81
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Payyappilly S, Dhara S, Chattopadhyay S. Thermoresponsive biodegradable PEG-PCL-PEG based injectable hydrogel for pulsatile insulin delivery. J Biomed Mater Res A 2013; 102:1500-9. [DOI: 10.1002/jbm.a.34800] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/07/2013] [Accepted: 05/09/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Sanal Payyappilly
- Rubber Technology Centre; Indian Institute of Technology; Kharagpur 721302 India
| | - Santanu Dhara
- School of Medical Science and Technology, Indian Institute of Technology; Kharagpur 721302 India
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82
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Effects of L-lactic acid and D,L-lactic acid on viability and osteogenic differentiation of mesenchymal stem cells. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5798-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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83
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84
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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: 121] [Impact Index Per Article: 11.0] [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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85
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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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86
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Seib FP, Pritchard EM, Kaplan DL. Self-assembling doxorubicin silk hydrogels for the focal treatment of primary breast cancer. ADVANCED FUNCTIONAL MATERIALS 2013; 23:58-65. [PMID: 23646041 PMCID: PMC3639434 DOI: 10.1002/adfm.201201238] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Standard care for early stage breast cancer includes tumor resection and local radiotherapy to achieve long-term remission. Systemic chemotherapy provides only low locoregional control of the disease; therefore, we describe self-assembling silk hydrogels that can retain and then deliver doxorubicin locally. Self-assembling silk hydrogels show no swelling, are readily loaded with doxorubicin under aqueous conditions and release drug over 4 weeks in amounts that can be fine-tuned by varying the silk content. Following successful in vitro studies, locally injected silk hydrogels loaded with doxorubicin show excellent antitumor response in mice, outperforming the equivalent amount of doxorubicin delivered intravenously. In addition to reducing primary tumor growth, doxorubicin-loaded silk hydrogels reduce metastatic spread and are well tolerated in vivo. Thus, silk hydrogels are well suited for the local delivery of chemotherapy and provide a promising approach to improve locoregional control of breast cancer.
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87
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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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88
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Ci T, Li T, Chen L, Chang G, Yu L, Ding J. Effects of “mature micelle” formation of Pluronic P123 on equilibrium between lactone and carboxylate forms of 10-hydrocamptothecin in water. Polym Chem 2013. [DOI: 10.1039/c3py00118k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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Yang K, Zeng M. Multiresponsive hydrogel based on polyacrylamide functionalized with thymine derivatives. NEW J CHEM 2013. [DOI: 10.1039/c3nj41013g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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90
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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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91
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Ju Cha H, Dai J, Kim JC. Microgels composed of poly(ethylene imine) and carboxymethoxycoumarin: pH-dependent and photodependent integrity. J Appl Polym Sci 2012. [DOI: 10.1002/app.38531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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92
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Wang W, Deng L, Liu S, Li X, Zhao X, Hu R, Zhang J, Han H, Dong A. Adjustable degradation and drug release of a thermosensitive hydrogel based on a pendant cyclic ether modified poly(ε-caprolactone) and poly(ethylene glycol)co-polymer. Acta Biomater 2012; 8:3963-73. [PMID: 22835677 DOI: 10.1016/j.actbio.2012.07.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Revised: 07/16/2012] [Accepted: 07/16/2012] [Indexed: 12/27/2022]
Abstract
The convenient and precise fabrication of drug-hydrogel formulations with satisfactory degradability and a well-controlled drug release profile are crucial factors for injectable hydrogel formulations in clinical applications. Here a new injectable thermosensitive hydrogel formed from poly(ε-caprolactone) (PCL)-poly(ethylene glycol)-poly(ε-caprolactone) amphiphilicco-polymers with 1,4,8-trioxa[4.6]spiro-9-undecanone (TOSUO) moieties incorporated in the poly(ε-caprolactone) (PCL)block (PECT) was constructed to provide a route to tailor the degradation and drug release behavior. The effect of hydrophilic cyclic ether moieties on the degradation of and drug release by PECT hydrogels were evaluated in vitro and in vivo. The results indicated that a freeze-dried powder of paclitaxel-loaded PECT nanoparticles rapidly dissolved in water at ambient temperature with slightly shaking and formed a stable injectable in situ drug-hydrogel formulation at body temperature, which is convenient for clinical operations because it avoids the need for pre-quenching or long-term incubation. The paclitaxel distribution was also more quantitative and homogeneous on entrapping paclitaxel in PECT nanoparticles. Further, the small number of pendant cyclic ether groups in PCL could decrease the cystallinity and hydrophobicity and, as a result, the in vitro and in vivo retention time of PECT hydrogels and the release of entrapped paclitaxel could be tuned from a few weeks to months by varying the amount of PTOSUO in the hydrophobic block. Significantly, paclitaxel-loaded PECT nanoparticles and free paclitaxel could be simultaneously released during the in vitro paclitaxel release from PECT hydrogels. A histopathological evaluation indicated that in vivo injected PECT hydrogels produced only a modest inflammatory response. Thus pendant cyclic ether modification of PCL could be an effective way to achieve the desired degradation and drug release profiles of amphiphilicco-polymer thermosensitive hydrogels and PECT hydrogels may be suitable for local drug delivery.
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Affiliation(s)
- Weiwei Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
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93
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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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94
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Seib FP, Kaplan DL. Doxorubicin-loaded silk films: drug-silk interactions and in vivo performance in human orthotopic breast cancer. Biomaterials 2012; 33:8442-50. [PMID: 22922025 DOI: 10.1016/j.biomaterials.2012.08.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Accepted: 08/01/2012] [Indexed: 10/28/2022]
Abstract
Breast cancer is the most common of all malignant diseases in women. Systemic chemotherapy provides low clinical benefit for locoregional control of the disease, while localised chemotherapy may provide a therapeutic advantage. In this study, doxorubicin-loaded silk films were directly applied to tumours. Affinity binding studies demonstrated that the adsorption of doxorubicin onto silk was partially dependent on crystallinity. By manipulating silk crystallinity, or β-sheet content, the doxorubicin release rate could be controlled ranging from immediate release to prolonged release over >4 weeks. The therapeutic impact of doxorubicin-loaded silk films on primary tumour growth and metastasis was assessed in mice using a humanised orthotopic breast cancer model (adenocarcinoma). Both soluble and stabilised silk films loaded with doxorubicin had a significantly greater primary tumour response than the equivalent dose of doxorubicin administered intravenously in the absence of the silk film carrier. In addition to reducing primary tumour growth, stabilised silk films loaded with doxorubicin also reduced metastatic spread and autopsy indicated that these films were not associated with any local or systemic toxicities. Collectively, these results suggest that the future use of this approach for localised chemotherapy is promising.
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Affiliation(s)
- F Philipp Seib
- Tufts University, Department of Biomedical Engineering, 4 Colby Street, Medford, MA 02155, USA
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95
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Zhu W, Li Y, Liu L, Chen Y, Xi F. Supramolecular hydrogels as a universal scaffold for stepwise delivering Dox and Dox/cisplatin loaded block copolymer micelles. Int J Pharm 2012; 437:11-9. [PMID: 22902390 DOI: 10.1016/j.ijpharm.2012.08.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 07/27/2012] [Accepted: 08/03/2012] [Indexed: 11/30/2022]
Abstract
A general and simple method was presented for preparing supramolecular hydrogels to deliver anticancer drugs. In this system, hydrophobic anticancer drug doxorubicin (Dox) was loaded into poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-b-PCL) amphiphilic block copolymer micelles by hydrophobic interaction. The drug loaded micelles were then mixed with α-cyclodextrin (α-CD) solution to generate the hydrogel. The α-CDs were threaded onto the PEG coronae of the micelles, and formed physical crosslinks of the molecular necklaces. Moreover, by mixing solutions of cisplatin complexed poly(ethylene glycol)-b-poly(acrylic acid) (PEG-b-PAA) micelles, Dox loaded PEG-b-PCL micelles and α-CDs together, a dual-drug loaded supramolecular hydrogel was generated. The gelation properties could be tuned by changing concentrations and polymerization degree of the polymers, and by adding PEG homopolymers or Pluronic copolymers as additives. Structures and properties of the drug loaded hydrogels were studied by wide-angle X-ray diffraction (XRD) and rheology measurement, respectively. In vitro drug release in PBS with different pH values was quantified. The erosion of hydrogels produced discrete micelles, from which the free drugs were released. In vitro cytotoxicity studies showed that the Dox loaded hydrogel inhibited the growth of human bladder carcinoma EJ cells, and the dual-drug loaded hydrogel showed even higher cytotoxicity.
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Affiliation(s)
- Wen Zhu
- Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
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96
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Luo Z, Jiang J. pH-sensitive drug loading/releasing in amphiphilic copolymer PAE–PEG: Integrating molecular dynamics and dissipative particle dynamics simulations. J Control Release 2012; 162:185-93. [DOI: 10.1016/j.jconrel.2012.06.027] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 05/21/2012] [Accepted: 06/18/2012] [Indexed: 11/17/2022]
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97
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Synthesis and characterization of poly(amino urea urethane)-based block copolymer and its potential application as injectable pH/temperature-sensitive hydrogel for protein carrier. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.07.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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98
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Li L, Zhang Y, Hao N, Chen D, Tang F. Fabrication of PLGA coated silica nanorattle for controlling the drug release behavior. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5246-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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99
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Zhang Z, Ni J, Chen L, Yu L, Xu J, Ding J. Encapsulation of cell-adhesive RGD peptides into a polymeric physical hydrogel to prevent postoperative tissue adhesion. J Biomed Mater Res B Appl Biomater 2012; 100:1599-609. [DOI: 10.1002/jbm.b.32728] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 03/06/2012] [Accepted: 04/04/2012] [Indexed: 01/22/2023]
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100
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Loh XJ, Yee BJH, Chia FS. Sustained delivery of paclitaxel using thermogelling poly(PEG/PPG/PCL urethane)s for enhanced toxicity against cancer cells. J Biomed Mater Res A 2012; 100:2686-94. [DOI: 10.1002/jbm.a.34198] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/19/2012] [Accepted: 03/30/2012] [Indexed: 01/31/2023]
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