1
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Brossier T, Volpi G, Vasquez-Villegas J, Petitjean N, Guillaume O, Lapinte V, Blanquer S. Photoprintable Gelatin- graft-Poly(trimethylene carbonate) by Stereolithography for Tissue Engineering Applications. Biomacromolecules 2021; 22:3873-3883. [PMID: 34510908 DOI: 10.1021/acs.biomac.1c00687] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The stereolithography process is a powerful additive manufacturing technology to fabricate scaffolds for regenerative medicine. Nevertheless, the quest for versatile inks allowing one to produce scaffolds with controlled properties is still unsatisfied. In this original article, we tackle this bottleneck by synthesizing a panel of photoprocessable hybrid copolymers composed of gelatin-graft-poly(trimethylene carbonate)s (Gel-g-PTMCn). We demonstrated that by changing the length of PTMC blocks grafted from gelatin, it is possible to tailor the final properties of the photofabricated objects. We reported here on the synthesis of Gel-g-PTMCn with various lengths of PTMC blocks grafted from gelatin using hydroxy and amino side groups of the constitutive amino acids. Then, the characterization of the resulting hybrid copolymers was fully investigated by quantitative NMR spectroscopy before rendering them photosensitive by methacrylation of the PTMC terminal groups. Homogeneous composition of the photocrosslinked hybrid polymers was demonstrated by EDX spectroscopy and electronic microscopy. To unravel the individual contribution of the PTMC moiety on the hybrid copolymer behavior, water absorption, contact angle measurements, and degradation studies were undertaken. Interestingly, the photocrosslinked materials immersed in water were examined using tensile experiments and displayed a large panel of behavior from hydrogel to elastomer-like depending on the PTMC/gel ratio. Moreover, the absence of cytotoxicity was conducted following the ISO 10993 assay. As a proof of concept, 3D porous objects were successfully fabricated using stereolithography. Those results validate the great potential of this panel of inks for tissue engineering and regenerative medicine.
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Affiliation(s)
- Thomas Brossier
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier 34095, France.,3D Medlab, Marignane 13700, France
| | | | | | - Noémie Petitjean
- LMGC, Univ. Montpellier, CNRS, Montpellier 34090, France.,IRMB, Univ. Montpellier, INSERM, Montpellier 34090, France
| | - Olivier Guillaume
- 3D Printing and Biofabrication Group, Institute of Materials Science and Technology, TU Wien Getreidemarkt 9/308, 1060 Vienna, Austria
| | - Vincent Lapinte
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier 34095, France
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2
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Hussain K, Aslam Z, Ullah S, Shah MR. Synthesis of pH responsive, photocrosslinked gelatin-based hydrogel system for control release of ceftriaxone. Chem Phys Lipids 2021; 238:105101. [PMID: 34029537 DOI: 10.1016/j.chemphyslip.2021.105101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/03/2021] [Accepted: 05/18/2021] [Indexed: 01/16/2023]
Abstract
Stimuli-responsive or smart nanocarriers are emerging class of materials used for drug delivery and tissue engineering applications. The objective of this study was to develop environment friendly, economic and smart gelatin based hydrogel for controlled delivery of ceftriaxone. Gelatin was modified with furfuryl amine and converted to hydrogel via photo oxidation reaction, initiated with visible light in the presence of crosslinking agent (eosin Y and riboflavin) to enhance the mechanical properties and increase structural integrity of the hydrogel. The conjugated gelatin-furfuryl amine (GFA) was characterized by 1H NMR and FTIR techniques. An antimicrobial drug (ceftriaxone) was encapsulated in hydrogels systems (HG-E and HG-R) and its encapsulation efficiency was found as 88 % and 74 %, respectively. The in-vitro swelling property and release profile of the drug reveals that the behavior of hydrogel was pH dependent for both the hydrogels systems. Antibacterial study performed on HG-R hydrogel system via disc diffusion method revealed a greater zone of inhibition for Staphylococcus aureus. Findings of the presented work revealed the formation of an excellent, smart hydrogel system using Eosin-Y as cross-linker having greater encapsulation efficiency that can potentially be used for drug delivery application of ceftriaxone to enhance its therapeutic effects.
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Affiliation(s)
- Kashif Hussain
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, Pakistan.
| | - Zara Aslam
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, Pakistan.
| | - Shafi Ullah
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, Pakistan.
| | - Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, Pakistan.
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3
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Li Y, Zhang X, Zhang J, Ma J, Chi L, Qiu N, Li Y. Synthesis of a biodegradable branched copolymer mPEG-b-PLGA-g-OCol and its pH-sensitive micelle. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110455. [PMID: 31924042 DOI: 10.1016/j.msec.2019.110455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 11/02/2019] [Accepted: 11/16/2019] [Indexed: 01/01/2023]
Abstract
An amphiphilic biodegradable branched copolymer, mPEG-b-PLGA-g-OCol, was synthesized by grafting copolymer (methoxy polyethylene glycol)-b-Poly (l,d-lactic-co-glycolic acid) (mPEG-b-PLGA) on oligomeric collagen (OCol), to form a branched structure with mPEG-b-PLGA as side chain and OCol as backbone. mPEG-b-PLGA and mPEG-b-PLGA-g-OCol were both amphipathic and can self-assemble into micelles in aqueous solution. The mPEG-b-PLGA-g-OCol micelles showed pH-sensitive behaviors and the particle size below 100 nm in slightly acidic environment such as tumor tissue milieu interieur to perform passive targeting. Observed by SEM, when the solution pH increased from 5 to 9, the morphology of mPEG-b-PLGA-g-OCol micelles changed from small spheres to larger ones to rings. For biodegradable mPEG-b-PLGA-g-OCol, the micelles will gradually degrade in body. Further, doxorubicin (DOX) was effectively loaded in the micelles with drug loading and encapsulation efficiency of 3.48% and 25.8%, respectively. To evaluate antineoplastic effect of DOX-laden micelles in vitro, MTT test, flow cytometry and CLSM were performed and found that DOX-laden micelles exhibited higher cellular proliferation inhibition against HeLa cells. These features indicated that the mPEG-b-PLGA-g-OCol micelles were potential drug carrier for cancer therapy.
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Affiliation(s)
- Yanwei Li
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Xue Zhang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingpeng Zhang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jing Ma
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Lin Chi
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Nannan Qiu
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Yanhui Li
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China.
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4
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Das RP, Singh BG, Kunwar A. Preparation of a size selective nanocomposite through temperature assisted co-assembly of gelatin and pluronic F127 for passive targeting of doxorubicin. Biomater Sci 2020; 8:4251-4265. [DOI: 10.1039/d0bm00725k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The study demonstrates the importance of the weight ratio of F127 and gelatin in forming size selective nanoconjugate through a thermal relaxation approach and its potential as an efficient drug delivery system of doxorubicin with reduced side effects.
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Affiliation(s)
- Ram Pada Das
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
| | - Beena Gobind Singh
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
| | - Amit Kunwar
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
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5
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Mahmoudi Saber M. Strategies for surface modification of gelatin-based nanoparticles. Colloids Surf B Biointerfaces 2019; 183:110407. [DOI: 10.1016/j.colsurfb.2019.110407] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/01/2019] [Accepted: 07/29/2019] [Indexed: 12/14/2022]
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6
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Modified gelatin nanoparticles for gene delivery. Int J Pharm 2019; 554:224-234. [DOI: 10.1016/j.ijpharm.2018.11.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 01/13/2023]
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7
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Wang Y, Ren J, Liu Y, Liu R, Wang L, Yuan Q, He J, Nie Y, Xu J, Yu J. Preparation and evaluation of folic acid modified succinylated gelatin micelles for targeted delivery of doxorubicin. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Huang WY, Lin JN, Hsieh JT, Chou SC, Lai CH, Yun EJ, Lo UG, Pong RC, Lin JH, Lin YH. Nanoparticle Targeting CD44-Positive Cancer Cells for Site-Specific Drug Delivery in Prostate Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30722-30734. [PMID: 27786455 DOI: 10.1021/acsami.6b10029] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Prostate cancer is one of the leading causes of cancer death in adult men and is a multistage disease with therapeutic challenges of local recurrent advanced tumors and distant metastatic disease. CD44 is a multifunctional and multistructural cell surface glycoprotein that is involved in cell-cell interactions, cell proliferation, and cell migration. In the study, we produced negatively charged and biocompatible hyaluronic acid-based nanoparticles as a therapeutic system for targeting CD44-positive cancer cells. Subsequently, we confirmed the delivery of bioactive epigallocatechin-3-gallate and site-specific inhibition of prostate tumor growth. In this study, hyaluronic acid-based nanoparticles successfully encapsulated epigallocatechin-3-gallate and were efficiently internalized into cancer cells via CD44 ligand receptor recognition, induced cell cycle arrest at G2/M phase, and inhibited prostate cancer cell growth. Furthermore, in vivo assays indicated that these nanoparticles specifically bind CD44 receptors and increase apoptosis of cancer cells, leading to significant decreases in prostate tumor activity and tumor tissue inflammation.
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Affiliation(s)
- Wen-Ying Huang
- Department of Applied Cosmetology, Master Program of Cosmetic Science, Hung-Kuang University , Taichung 43302, Taiwan
| | - Jia-Ni Lin
- Department of Biological Science and Technology, China Medical University , Taichung 40402, Taiwan
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
| | - Shen-Chieh Chou
- Department of Biological Science and Technology, China Medical University , Taichung 40402, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan 33302, Taiwan
| | - Eun-Jin Yun
- Department of Urology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
| | - U-Ging Lo
- Department of Urology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
| | - Rey-Chen Pong
- Department of Urology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
| | - Jui-Hsiang Lin
- Bio-medical Carbon Technology Co., Ltd , Taichung 40852, Taiwan
| | - Yu-Hsin Lin
- Department of Biological Science and Technology, China Medical University , Taichung 40402, Taiwan
- Department of Urology, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
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9
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Kommareddy S, Tiwari SB, Amiji MM. Long-Circulating Polymeric Nanovectors for Tumor-Selective Gene Delivery. Technol Cancer Res Treat 2016; 4:615-25. [PMID: 16292881 DOI: 10.1177/153303460500400605] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Significant advances in the understanding of the genetic abnormalities that lead to the development, progression, and metastasis of neoplastic diseases has raised the promise of gene therapy as an approach to medical intervention. Most of the clinical protocols that have been approved in the United States for gene therapy have used the viral vectors because of the high efficiency of gene transfer. Conventional means of gene delivery using viral vectors, however, has undesirable side effects such as insertion of mutational viral gene into the host genome and development of replication competent viruses. Among non-viral gene delivery methods, polymeric nanoparticles are increasingly becoming popular as vectors of choice. The major limitation of these nanoparticles is poor transfection efficiency at the target site after systemic administration due to uptake by the cells of reticuloendothelial system (RES). In order to reduce the uptake by the cells of the RES and improve blood circulation time, these nanoparticles are coated with hydrophilic polymers such as poly(ethylene glycol) (PEG). This article reviews the use of such hydrophilic polymers employed for improving the circulation time of the nanocarriers. The mechanism of polymer coating and factors affecting the circulation time of these nanocarriers will be discussed. In addition to the long circulating property, modifications to improve the target specificity of the particles and the limitations of steric protection will be analyzed.
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Affiliation(s)
- Sushma Kommareddy
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston MA 02115, USA
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10
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Recent advancement of gelatin nanoparticles in drug and vaccine delivery. Int J Biol Macromol 2015; 81:317-31. [DOI: 10.1016/j.ijbiomac.2015.08.006] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 08/03/2015] [Accepted: 08/04/2015] [Indexed: 12/29/2022]
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11
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Gelatin carriers for drug and cell delivery in tissue engineering. J Control Release 2014; 190:210-8. [PMID: 24746627 DOI: 10.1016/j.jconrel.2014.04.014] [Citation(s) in RCA: 222] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 04/01/2014] [Accepted: 04/03/2014] [Indexed: 12/24/2022]
Abstract
The ability of gelatin to form complexes with different drugs has been investigated for controlled release applications. Gelatin parameters, such as crosslinking density and isoelectric point, have been tuned in order to optimize gelatin degradation and drug delivery kinetics. In recent years, focus has shifted away from the use of gelatin in isolation toward the modification of gelatin with functional groups and the fabrication of material composites with embedded gelatin carriers. In this review, we highlight some of the latest work being performed in these areas and comment on trends in the field. Specifically, we discuss gelatin modifications for immune system evasion, drug stabilization, and targeted delivery, as well as gelatin composite systems based on ceramics, naturally-occurring polymers, and synthetic polymers.
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12
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Jiang Q, Xu J, Li T, Qiao C, Li Y. Synthesis and Antibacterial Activities of Quaternary Ammonium Salt of Gelatin. J MACROMOL SCI B 2013. [DOI: 10.1080/00222348.2013.808518] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Elzoghby AO. Gelatin-based nanoparticles as drug and gene delivery systems: reviewing three decades of research. J Control Release 2013; 172:1075-91. [PMID: 24096021 DOI: 10.1016/j.jconrel.2013.09.019] [Citation(s) in RCA: 373] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 09/19/2013] [Accepted: 09/21/2013] [Indexed: 12/16/2022]
Abstract
Gelatin is one of the most versatile natural biopolymers widely used in pharmaceutical industries due to its biocompatibility, biodegradability, low cost and numerous available active groups for attaching targeting molecules. These advantages led to its application in the synthesis of nanoparticles for drug and gene delivery during the last thirty years. The current article entails a general review of the different preparation techniques of gelatin nanoparticles (GNPs): desolvation, coacervation-phase separation, emulsification-solvent evaporation, reverse phase microemulsion, nanoprecipitation, self-assembly and layer-by-layer coating, from the point of view of the methodological and mechanistic aspects involved. Various crosslinkers used to improve the physicochemical properties of GNPs includintg aldehydes, genipin, carbodiimide/N-hydroxysuccinimide, and transglutaminase are reported. An analysis is given of the physicochemical behavior of GNPs including drug loading, release, particle size, zeta-potential, cytotoxicity, cellular uptake and stability. This review also attempts to provide an overview of the major applications of GNPs in drug delivery and gene therapy and their in vivo pharmacological performances, as well as site-specific drug targeting using various ligands modifying the surface of GNPs. Finally, nanocomplexes of gelatin with polymers, lipids or inorganic materials are also discussed.
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Affiliation(s)
- Ahmed O Elzoghby
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt.
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14
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Bertoldo M, Cognigni F, Bronco S. Preparation of gelatin/polyoxypropylene grafted copolymers by isocyanate promoted “grafting onto” reaction. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.08.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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15
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Xu J, Li TD, Tang XL, Qiao CD, Jiang QW. Effect of aggregation behavior of gelatin in aqueous solution on the grafting density of gelatin modified with glycidol. Colloids Surf B Biointerfaces 2012; 95:201-7. [DOI: 10.1016/j.colsurfb.2012.02.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 02/24/2012] [Accepted: 02/27/2012] [Indexed: 11/26/2022]
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16
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Uesugi Y, Kawata H, Saito Y, Tabata Y. Ultrasound-responsive thrombus treatment with zinc-stabilized gelatin nano-complexes of tissue-type plasminogen activator. J Drug Target 2011; 20:224-34. [DOI: 10.3109/1061186x.2011.633259] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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Tsai YD, Lien CH, Hu CC. Effects of polyethylene glycol and gelatin on the crystal size, morphology, and Sn2+-sensing ability of bismuth deposits. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.06.077] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Gaihre B, Khil MS, Kim HY. In vitro anticancer activity of doxorubicin-loaded gelatin-coated magnetic iron oxide nanoparticles. J Microencapsul 2011; 28:286-93. [PMID: 21545319 DOI: 10.3109/02652048.2011.559286] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Magnetic drug targeting allows accumulation of drug at a defined target site with the help of an external magnetic field. Current research explored uptake and anticancer activity of doxorubicin-loaded gelatin-coated magnetic iron oxide particles (DXR-GIOPs) in order to investigate potential of gelatin-coated iron oxide particles (GIOPs) as a drug carrier in the field of magnetic drug targeting. The in vitro test was done using HeLa cells as a model cell and DXR as a model drug. The cytotoxicity and uptake of GIOPs were also studied and results were compared with that of DXR-GIOPs. The results indicated that GIOPs were not toxic to HeLa cells even at higher concentration of 1.2 mg/mL; however, DXR-GIOPs showed toxicity in time as well as dose-dependent manner. Furthermore, quantitative and qualitative uptake studies showed higher uptake of DXR-GIOPs compared to GIOPs in the identical condition by the cells.
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Affiliation(s)
- Babita Gaihre
- School of Mechanical, Material and Mechatronic Engineering, University of Wollongong, Wollongong, NSW, Australia
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19
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Gaihre B, Hee Lee Y, Khil MS, Yi HK, Kim HY. In-vitro cytotoxicity and cell uptake study of gelatin-coated magnetic iron oxide nanoparticles. J Microencapsul 2011; 28:240-7. [PMID: 21545315 DOI: 10.3109/02652048.2011.557747] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of this study was to modify the surfaces of magnetic iron oxide nanoparticles (IOPs) with gelatin in order to reduce cytotoxicity and enhance cellular uptake. The gelatin-coated IOPs were characterized in terms of their functionalization, size, surface charge, morphology and crystalline structure using Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), dynamic light scattering (DLS), transmission electron microscopy (BIO-TEM) and x-ray diffraction (XRD) analysis. The cytotoxicity of the gelatin-coated IOPs to human fibroblasts was assessed using an MTT-assay and was compared with uncoated IOPs. Similarly, the cellular uptake of the coated and uncoated IOPs was visualized using BIO-TEM and quantified using inductively coupled plasma spectroscopy (ICPS). As shown by the Fourier emission scanning electron microscopy (FE-SEM) and viability test, the massive uptake of uncoated IOPs lead to reduced viability. However, gelatin coating lead to increased viability and slow uptake without any visible distortion to the cell morphology.
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Affiliation(s)
- Babita Gaihre
- Department of Bionanosystem Engineering, Chonbuk National University, Chonju, Republic of Korea.
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20
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Uesugi Y, Kawata H, Jo JI, Saito Y, Tabata Y. An ultrasound-responsive nano delivery system of tissue-type plasminogen activator for thrombolytic therapy. J Control Release 2010; 147:269-77. [DOI: 10.1016/j.jconrel.2010.07.127] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/21/2010] [Accepted: 07/29/2010] [Indexed: 11/30/2022]
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21
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Xu X, Zhong W, Zhou S, Trajtman A, Alfa M. Electrospun PEG-PLA nanofibrous membrane for sustained release of hydrophilic antibiotics. J Appl Polym Sci 2010. [DOI: 10.1002/app.32415] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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22
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23
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Schuster M, Turecek C, Weigel G, Saf R, Stampfl J, Varga F, Liska R. Gelatin-based photopolymers for bone replacement materials. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23747] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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A novel injectable hydrogel in combination with a surgical sealant in a rat knee osteochondral defect model. Knee Surg Sports Traumatol Arthrosc 2009; 17:1326-31. [PMID: 19633829 DOI: 10.1007/s00167-009-0881-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 07/08/2009] [Indexed: 10/20/2022]
Abstract
Osteochondral defects are frequent, painful, debilitating and expensive to treat, often resulting in poor results. The goal of the present study was to synthesize and characterize a novel biocompatible and biodegradable hydrogel comprised of poly(ethylene glycol), gelatin, and genipin, and examine the hydrogel as an injectable biomaterial in combination with a cyanoacrylate-based surgical sealant for cartilage repair. An osteochondral knee defect was generated in 24 rats, then the hydrogel, with or without a surgical sealant, was injected into the defect and followed for 14 days. The results demonstrated that the hydrogel is biocompatible and biodegradable, and that the cyanoacrylate-based surgical sealant is a relatively safe option for maintaining the hydrogel in the defect. This is the first study describing a cyanoacrylate-based surgical sealant in combination with a polymer hydrogel for cartilage repair.
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25
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Mao J, Gan Z. Amphiphilic PEG-co
-PGL-g
-PCL Copolymer Brushes: Synthesis, Micellization and Controlled Drug Delivery. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Zhang X, Guo X, Yang S, Tan S, Li X, Dai H, Yu X, Zhang X, Weng N, Jian B, Xu J. Double-network hydrogel with high mechanical strength prepared from two biocompatible polymers. J Appl Polym Sci 2009. [DOI: 10.1002/app.29572] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Ethirajan A, Schoeller K, Musyanovych A, Ziener U, Landfester K. Synthesis and Optimization of Gelatin Nanoparticles Using the Miniemulsion Process. Biomacromolecules 2008; 9:2383-9. [DOI: 10.1021/bm800377w] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anitha Ethirajan
- Institute of Organic Chemistry III (Macromolecular Chemistry and Organic Materials), University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany, and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katrin Schoeller
- Institute of Organic Chemistry III (Macromolecular Chemistry and Organic Materials), University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany, and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Anna Musyanovych
- Institute of Organic Chemistry III (Macromolecular Chemistry and Organic Materials), University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany, and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Ulrich Ziener
- Institute of Organic Chemistry III (Macromolecular Chemistry and Organic Materials), University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany, and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Institute of Organic Chemistry III (Macromolecular Chemistry and Organic Materials), University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany, and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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Abstract
INTRODUCTIONNanoparticles have been widely used to overcome the barriers for drug delivery. Those prepared from natural polymers have a significant advantage over others prepared from synthetic polymers. This article outlines the advantages of gelatin for the preparation of nanoparticles and a method for preparing them. The uses of nanoparticles are also discussed. Cell trafficking can be studied using nanoparticles encapsulated with electron-dense material (e.g., gold); such particles are then visualized by transmission electron microscopy (TEM). DNA-encapsulated nanoparticles can be used for transfection and other methods of gene delivery. The qualitative and quantitative analysis of transfection studies is outlined briefly.
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Kiuchi H, Kai W, Inoue Y. Preparation and characterization of poly(ethylene glycol) crosslinked chitosan films. J Appl Polym Sci 2007. [DOI: 10.1002/app.27546] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lai JY, Lu PL, Chen KH, Tabata Y, Hsiue GH. Effect of Charge and Molecular Weight on the Functionality of Gelatin Carriers for Corneal Endothelial Cell Therapy. Biomacromolecules 2006; 7:1836-44. [PMID: 16768405 DOI: 10.1021/bm0601575] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cell transplantation strategies usually involve the use of supporting carrier materials because of the soft and fragile nature of these grafts. In this work, a cell-adhesive gelatin hydrogel carrier was fabricated to deliver cultivated human corneal endothelial cell (HCEC) sheets, which were harvested from thermo-responsive poly(N-isopropylacrylamide) (PNIPAAm)-grafted culture surfaces. The carrier disks, consisting of gelatins with a different isoelectric point (IEP = 5.0 and 9.0) and a molecular weight (MW) ranging from 3 to 100 kDa, were subjected to 16.6 kGy gamma irradiation for sterilization. The effect of IEP and MW of the raw gelatins (i.e., before irradiation) on the functionality of sterilized disks was studied by determinations of mechanical property, water content, dissolution degree, and cytocompatibility. Irrespective of the IEP of raw gelatin, hydrogel disks prepared with high MW (100 kDa) exhibited a greater tensile strength, lower water content, and slower dissolution rate than those made of low MW gelatin (8 and 3 kDa). From the investigation of cellular responses to the disks, the negatively charged gelatin (IEP = 5.0) groups were more cytocompatible when compared with their positively charged counterparts (IEP = 9.0) at the same MW (100 kDa). Additionally, in the negatively charged gelatin groups, only a slight increase in pro-inflammatory cytokine expression was observed with increasing MW of gelatin from 3 to 100 kDa. It is concluded that the gamma-sterilized hydrogel disks made from raw gelatins (IEP = 5.0, MW = 100 kDa) with appropriate dissolution degree and acceptable cytocompatibility are capable of providing stable mechanical support, making these carriers promising candidates for intraocular delivery of cultivated HCEC sheets.
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Affiliation(s)
- Jui-Yang Lai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30013, ROC
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Kushibiki T, Tabata Y. Preparation of poly(ethylene glycol)-introduced cationized gelatin as a non-viral gene carrier. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2006; 16:1447-61. [PMID: 16370244 DOI: 10.1163/156856205774472326] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The objective of this study was to prepare cationized gelatins grafted with poly(ethylene glycol) (PEG) (PEG-cationized gelatin) and evaluate the in vivo efficiency as a non-viral gene carrier. Cationized gelatin was prepared by chemical introduction of ethylenediamine to the carboxyl groups of gelatin. PEG with one terminal of active ester group was coupled to the amino groups of cationized gelatin to prepare PEG-cationized gelatins. Electrophoretic experiments revealed that the PEG-cationized gelatin with low PEGylation degrees was complexed with a plasmid DNA of luciferase, in remarked contrast to that with high PEGylation degrees. When the plasmid DNA complexed with the cationized gelatin or PEG-cationized gelatin was mixed with deoxyribonuclease I (DNase I) in solution to evaluate the resistance to enzymatic degradation, stronger protection effect of the PEG-cationized gelatin was observed than that of the cationized gelatin. The complex of plasmid DNA and PEG-cationized gelatin had an apparent molecular size of about 300 nm and almost zero surface charge. These findings indicate that the PEG-cationized gelatin-plasmid DNA complex has a nano-order structure where the plasmid DNA is covered with PEG molecules. When the PEG-cationized gelatin-plasmid DNA complex was intramuscularly injected, the level of gene expression was significantly increased compared with the injection of plasmid DNA solution. It is concluded that the PEG-cationized gelatin was a promising non-viral gene carrier to enhance gene expression in vivo.
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Affiliation(s)
- Toshihiro Kushibiki
- Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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Gattás-Asfura KM, Weisman E, Andreopoulos FM, Micic M, Muller B, Sirpal S, Pham SM, Leblanc RM. Nitrocinnamate-functionalized gelatin: synthesis and "smart"hydrogel formation via photo-cross-linking. Biomacromolecules 2006; 6:1503-9. [PMID: 15877371 DOI: 10.1021/bm049238w] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gelatin having p-nitrocinnamate pendant groups (Gel-NC) was prepared via an efficient one-pot synthesis, yield >87%. (1)H NMR data indicated that 1 mol of gelatin was modified with 18 +/- 6 mol of the photosensitive group. Upon exposure to low-intensity 365 nm UV light and in the absence of photoinitiators or catalysts, Gel-NC cross-linked within minutes into a gelatin-based hydrogel as monitored by UV-vis spectroscopy. The degree of swelling of this biodegradable hydrogel in aqueous solutions responded to changes in Gel-NC concentration levels, the ionic strength of the aqueous solutions, and photo-cross-linking time. Topography changes associated with phase transition resulting from "photocleavage" of the hydrogel network with 254 nm UV light were studied with AFM. Both Gel-NC and its hydrogel expressed low toxicity to human neonatal fibroblast cells. In addition, gelatin-based microgels were prepared via the photo-cross-linking of Gel-NC within inverse micelles.
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Young S, Wong M, Tabata Y, Mikos AG. Gelatin as a delivery vehicle for the controlled release of bioactive molecules. J Control Release 2005; 109:256-74. [PMID: 16266768 DOI: 10.1016/j.jconrel.2005.09.023] [Citation(s) in RCA: 688] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Gelatin is a commonly used natural polymer which is derived from collagen. The isoelectric point of gelatin can be modified during the fabrication process to yield either a negatively charged acidic gelatin, or a positively charged basic gelatin at physiological pH. This theoretically allows electrostatic interactions to take place between a charged biomolecule and gelatin of the opposite charge, forming polyion complexes. Various forms of gelatin carrier matrices can be fabricated for controlled-release studies, and characterization studies have been performed which show that gelatin carriers are able to sorb charged biomolecules such as proteins and plasmid DNA through polyion complexation. The crosslinking density of gelatin hydrogels has been shown to affect their degradation rate in vivo, and the rate of biomolecule release from gelatin carriers has been shown to have a similar profile, suggesting that complexed gelatin/biomolecule fragments are released by enzymatic degradation of the carrier in vivo. This review will emphasize how biomolecules released from gelatin controlled-release systems are able to retain their biological activity, allowing for their use in tissue engineering, therapeutic angiogenesis, gene therapy, and drug delivery applications.
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Affiliation(s)
- Simon Young
- Department of Bioengineering, Rice University, Houston, TX 77251-1892, USA
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