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Heffernan JM, Overstreet DJ, Srinivasan S, Le LD, Vernon BL, Sirianni RW. Temperature responsive hydrogels enable transient three-dimensional tumor cultures via rapid cell recovery. J Biomed Mater Res A 2015; 104:17-25. [PMID: 26123863 DOI: 10.1002/jbm.a.35534] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/02/2015] [Accepted: 06/26/2015] [Indexed: 11/09/2022]
Abstract
Recovery of live cells from three-dimensional (3D) culture would improve analysis of cell behaviors in tissue engineered microenvironments. In this work, we developed a temperature responsive hydrogel to enable transient 3D culture of human glioblastoma (GBM) cells. N-isopropylacrylamide was copolymerized with hydrophilic grafts and functionalized with the cell adhesion peptide RGD to yield the novel copolymer poly(N-isopropylacrylamide-co-Jeffamine(®) M-1000 acrylamide-co-hydroxyethylmethacrylate-RGD), or PNJ-RGD. This copolymer reversibly gels in aqueous solutions when heated under normal cell culture conditions (37°C). Moreover, these gels redissolve within 70 s when cooled to room temperature without the addition of any agents to degrade the synthetic scaffold, thereby enabling rapid recollection of viable cells after 3D culture. We tested the efficiency of cell recovery following extended 3D culture and were able to recover more than 50% of viable GBM cells after up to 7 days in culture. These data demonstrate the utility of physically crosslinked PNJ-RGD hydrogels as a platform for culture and recollection of cells in 3D.
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Affiliation(s)
- John M Heffernan
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W. Thomas Road, Neuroscience Research Center 441, Phoenix, Arizona, 85013.,School of Biological and Health Systems Engineering, Arizona State University, PO Box 879709, Tempe, Arizona, 85287
| | - Derek J Overstreet
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W. Thomas Road, Neuroscience Research Center 441, Phoenix, Arizona, 85013
| | - Sanjay Srinivasan
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W. Thomas Road, Neuroscience Research Center 441, Phoenix, Arizona, 85013.,School of Biological and Health Systems Engineering, Arizona State University, PO Box 879709, Tempe, Arizona, 85287
| | - Long D Le
- School of Biological and Health Systems Engineering, Arizona State University, PO Box 879709, Tempe, Arizona, 85287
| | - Brent L Vernon
- School of Biological and Health Systems Engineering, Arizona State University, PO Box 879709, Tempe, Arizona, 85287
| | - Rachael W Sirianni
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W. Thomas Road, Neuroscience Research Center 441, Phoenix, Arizona, 85013.,School of Biological and Health Systems Engineering, Arizona State University, PO Box 879709, Tempe, Arizona, 85287
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Soykan C, Coşkun R, Kirbağ S, Şahin E. Synthesis, Characterization and Antimicrobial Activity of Poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid‐co‐crotonic acid). JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320601044369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Stabenfeldt SE, García AJ, LaPlaca MC. Thermoreversible laminin-functionalized hydrogel for neural tissue engineering. J Biomed Mater Res A 2006; 77:718-25. [PMID: 16555267 DOI: 10.1002/jbm.a.30638] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Traumatic injury to the central nervous system (CNS) triggers cell death and deafferentation, which may activate a cascade of cellular and network disturbances. These events often result in the formation of irregularly shaped lesions comprised of necrotic tissue and/or a fluid-filled cavity. Tissue engineering represents a promising treatment strategy for the injured neural tissue. To facilitate minimally invasive delivery of a tissue engineered system, a thermoreversible polymer is an attractive scaffold candidate. We have developed a bioactive scaffold for neural tissue engineering by tethering laminin-1 (LN) to methylcellulose (MC), a thermoresponsive hydrogel. The base MC chain was oxidized via sodium m-periodate to increase MC tethering capacity. Protein immobilization was facilitated by a Schiff base reaction between primary amine groups on LN and the carbonyl groups of the oxidized MC chain. Immunoassays demonstrated tethering of LN at 1.6 +/- 0.5 ng of LN per milligram of MC. Rheological measurements for different MC-LN constructs indicated MC composition- and MC treatment-dependent effects on solution-gelation transition temperature. Cellular assays with primary rat cortical neurons demonstrated enhanced cell adhesion and viability on LN-functionalized MC when compared with base and oxidized MC. This bioadhesive thermoresponsive scaffold may provide a robust delivery vehicle to injured CNS tissue for neural cell transplantation strategies.
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Affiliation(s)
- Sarah E Stabenfeldt
- Laboratory for Neuroengineering, W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, 30332-0535, USA
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Park KH, Na K, Chung HM. Enhancement of the adhesion of fibroblasts by peptide containing an Arg-Gly-Asp sequence with poly(ethylene glycol) into a thermo-reversible hydrogel as a synthetic extracellular matrix. Biotechnol Lett 2005; 27:227-31. [PMID: 15742141 DOI: 10.1007/s10529-004-8297-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2004] [Accepted: 12/14/2004] [Indexed: 10/25/2022]
Abstract
In an effort to regulate the behavior of mammalian cell entrapped in a gel, the gels were functionalized with the putative cell-binding (-Arg-Gly-Asp-) (RGD) domain. The adhesion molecules composed of Gly-Arg-Gly-Asp-Ser (GRGDS) peptides and the cell recognition ligands were inculcated into the thermo-reversible hydrogel composed of N-isopropylacrylamide, with a small amount of succinyl poly(ethylene glycol) (PEG) acrylate (MW 2000) used as the biomimetic extracellular matrix (ECM). The GRGDS-containing p(NiPAAm-co-PEG) copolymer gel was examined in vitro for its ability to promote cell spreading and to increase the viability of the cells by introducing PEG spacers. ECM poorly adhered to hydrogel lacking adhesion molecules permitting only a 20% spread of the seeded cells after 10 days. When the PEG spacer arms, which were immobilized by a peptide linkage, had been integrated into the hydrogel, the conjugation of RGD improved cell spreading by 600% in a 10-day trial.
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Affiliation(s)
- Keun-Hong Park
- College of Medicine, Pochon CHA University, Cell and Gene Therapy Research Institute 605, Yeoksam 1-dong, Kangnam-gu, Seoul, 135-081, Korea
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Park KH, Na K, Jung SY, Kim SW, Park KH, Cha KY, Chung HM. Insulinoma cell line (MIN6) adhesion and spreading mediated by Arg-Gly-Asp (RGD) sequence conjugated in thermo-reversible gel. J Biosci Bioeng 2005; 99:598-602. [PMID: 16233837 DOI: 10.1263/jbb.99.598] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2005] [Accepted: 03/23/2005] [Indexed: 11/17/2022]
Abstract
We have functionalized gels with a putative cell-binding (-Arg-Gly-Asp-) (RGD) domain in an effort to regulate mammalian cell behavior in cells entrapped with gel. Adhesion molecules composed of Gly-Arg-Gly-Asp-Ser (GRGDS) peptides and cell recognition ligands were inculcated into thermo-reversible hydrogel composed of N-isopropylacrylamide, with a small amount of succinyl poly(ethylene glycol) (PEG) acrylate (MW 2000) used as a biomimetic extracellular matrix (ECM). The GRGDS-containing p(NiPAAm-co-PEG) copolymer gel was studied in vitro for its ability to promote cell spreading and to increase the viability of cells by introducing PEG spacers. Hydrogel lacking the adhesion molecules proved to be a poor ECM for adhesion, permitting only a 20% spread of the seeded cells after 10 d. When PEG spacer arms, immobilized by a peptide linkage, had been integrated into the hydrogel, conjugation of RGD promoted cell spread by 300% in a 28-d trial. In addition, in a serum-free medium, only GRGDS peptides conjugated with the spacer arm were able to promote cell spread.
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Affiliation(s)
- Keun-Hong Park
- College of Medicine, Pochon CHA University, Cell and Gene Therapy Research Institute, 605 Yeoksam 1-dong, Kangnam-gu, Seoul 135-081, Korea
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Okamura A, Itayagoshi M, Hagiwara T, Yamaguchi M, Kanamori T, Shinbo T, Wang PC. Poly(N-isopropylacrylamide)-graft-polypropylene membranes containing adsorbed antibody for cell separation. Biomaterials 2005; 26:1287-92. [PMID: 15475058 DOI: 10.1016/j.biomaterials.2004.04.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2004] [Accepted: 04/08/2004] [Indexed: 11/20/2022]
Abstract
We developed a novel selective cell-separation method based on using a poly(N-isopropylacrylamide)-graft-polypropylene (PNIPAAm-g-PP) membrane containing adsorbed monoclonal antibody specific to the target cell. This membrane was prepared by plasma-induced polymerization and soaking in an antibody solution at 37 degrees C. Poly(N-isopropylacrylamide) has a thermoresponsive phase transition: at 32 degrees C water-insoluble (hydrophobic) and water-soluble (hydrophilic) states interconvert. Adsorption of antibody onto PNIPAAm-g-PP membrane at 37 degrees C and its desorption at 4 degrees C was verified by fluorescence-microscopy of the PNIPAAm-g-PP membrane after soaking it in fluorescein-conjugated goat anti-mouse IgG in phosphate-buffered saline. PNIPAAm-g-PP membranes containing adsorbed anti-mouse CD80 monoclonal antibody preferentially captured mouse-CD80 transfected cells at 37 degrees C compared with membranes lacking antibody or containing anti-mouse CD86 monoclonal antibody. Detachment of captured cells from PNIPAAm-g-PP membranes was facilitated by washing at 4 degrees C because of the thermoresponsive phase transition of PNIPAAm. With this method, mouse CD80- or mouse CD86-transfected cells were enriched from a 1:1 cell suspension to 72% or 66%, simply and with high yield.
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Affiliation(s)
- Aiko Okamura
- Research Center of Advanced Bionics, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Çaykara T. Solubility Parameters of Cross‐Linked Poly(N‐Vinyl‐2‐pyrrolidone‐co‐crotonic Acid) Copolymers Prepared by γ‐Ray‐Induced Polymerization Technique. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2004. [DOI: 10.1081/ma-120039182] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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He W, Halberstadt CR, Gonsalves KE. Lithography application of a novel photoresist for patterning of cells. Biomaterials 2004; 25:2055-63. [PMID: 14741620 DOI: 10.1016/j.biomaterials.2003.08.055] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Photolithography is the current workhorse for the microelectronic industry. It has been used extensively for the creation of patterns on two-dimensional surfaces. Various research groups have studied the use of photolithography to pattern surfaces for the alignment of cells. So far, these applications have been limited due to the use of organic solvents in the pattern developing process, which can denature biomacromolecules that would be attached to the material. To address this problem, a novel bioactive photoresist (bioresist) based on the copolymer of methyl methacrylate and 3-(t-butoxycarbonyl)-N-vinyl-2-pyrrolidone (MMA:TBNVP) was prepared and in vitro fibroblast cell growth on this resist was studied. Results demonstrated that the resist is non-adhesive to the fibroblast cells. By deprotecting the t-BOC groups into carboxyl groups (MMA:D-TBNVP), the material became cell adhesive. Furthermore, cells were able to proliferate on the MMA:D-TBNVP surface. By culturing cells on the MMA:D-TBNVP surface in serum versus serum-free medium, we reached the conclusion that the chemistry of the deprotected copolymer indirectly promoted cell attachment through its absorbance of serum proteins on the material. Patterns of 25 microm x 25 microm lines were obtained by chemically manipulating the surface of the photoresist using UV lithography without any solvent development. Fibroblast cells were observed to align on the patterned surface. This resist could be a suitable candidate to improve the application of conventional lithography in direct protein patterning for the guided growth of cells.
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Affiliation(s)
- Wei He
- Department of Chemistry, Institute of Material Science, University of Connecticut, Storrs, CT 06269, USA
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Çaykara T, Kantoğlu Ö. Thermal behavior and network structure of poly(N
-vinyl-2-pyrrolidone-crotonic acid) hydrogels prepared by radiation-induced polymerization. POLYM ADVAN TECHNOL 2004. [DOI: 10.1002/pat.423] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Park KH, Yun K. Immobilization of Arg-Gly-Asp (RGD) sequence in a thermosensitive hydrogel for cell delivery using pheochromocytoma cells (PC12). J Biosci Bioeng 2004; 97:374-7. [PMID: 16233645 DOI: 10.1016/s1389-1723(04)70221-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2004] [Accepted: 03/17/2004] [Indexed: 11/17/2022]
Abstract
A copolymer of N-isopropylacrylamide (98 mole% in the feed) and acrylic acid poly(N-isopropylacrylamide-co-acrylic acid) [p(NiPAAm-co-AAc)], and the adhesion molecule, an Arg-Gly-Asp (RGD)-incorporated hydrogel, were used to entrap pheochromocytoma cells (PC12). In a 28-d culture period, the PC12 cells in the RGD-conjugated gel maintained higher viability and produced dopamine at constant rates, while there was lower cell viability and less dopamine secretion by PC12 cells in p(NiPAAm-co-AAc). PC12 cells cultured in the RGD-conjugated gel would constitute a potentially useful three-dimensional cell system for application in nerve regeneration.
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Affiliation(s)
- Keun-Hong Park
- Department of Biomedical Engineering, Ajou University, Wonchon-dong Youngtong-gu, Suwon 442-749, Korea
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Çaykara T, Yerlikaya Z, Kantoğlu Ö. Surface free-energy analysis of poly(N-vinyl-2-pyrrolidone-crotonic acid) copolymers prepared by γ-ray-induced polymerization technique. J Appl Polym Sci 2003. [DOI: 10.1002/app.13245] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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