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Yang H, Yao L, Wang Y, Chen G, Chen H. Advancing cell surface modification in mammalian cells with synthetic molecules. Chem Sci 2023; 14:13325-13345. [PMID: 38033886 PMCID: PMC10685406 DOI: 10.1039/d3sc04597h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Biological cells, being the fundamental entities of life, are widely acknowledged as intricate living machines. The manipulation of cell surfaces has emerged as a progressively significant domain of investigation and advancement in recent times. Particularly, the alteration of cell surfaces using meticulously crafted and thoroughly characterized synthesized molecules has proven to be an efficacious means of introducing innovative functionalities or manipulating cells. Within this realm, a diverse array of elegant and robust strategies have been recently devised, including the bioorthogonal strategy, which enables selective modification. This review offers a comprehensive survey of recent advancements in the modification of mammalian cell surfaces through the use of synthetic molecules. It explores a range of strategies, encompassing chemical covalent modifications, physical alterations, and bioorthogonal approaches. The review concludes by addressing the present challenges and potential future opportunities in this rapidly expanding field.
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Affiliation(s)
- He Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Lihua Yao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Yichen Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
| | - Gaojian Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University Suzhou 215006 Jiangsu P. R. China
| | - Hong Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren'ai Road Suzhou 215123 Jiangsu P. R. China
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2
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Chen X, Taguchi T. Enhanced skin adhesive property of α-cyclodextrin/nonanyl group-modified poly(vinyl alcohol) inclusion complex film. Carbohydr Polym 2021; 263:117993. [PMID: 33858580 DOI: 10.1016/j.carbpol.2021.117993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/19/2021] [Accepted: 03/24/2021] [Indexed: 01/02/2023]
Abstract
For skin contact medical devices, realizing a strong contact with skin is essential to precisely detect human biological information and enable human-machine interaction. In this study, we aimed to fabricate and characterize an inclusion complex film (ICF) for skin adhesion using α-cyclodextrin (α-CD) and nonanyl group-modified PVA (C9-PVA) under wet conditions. Based on the water insolubility of C9-PVA and the inclusion ability of α-CD for alkyl groups, α-CD/C9-PVA ICF was prepared. Among the prepared ICFs, α-CD/2.5C9-PVA (w/w = 0.5) ICF showed the highest bonding strength and T-peeling strength to porcine skin. Furthermore, α-CD/2.5C9-PVA (w/w = 0.5) ICF had better water vapor transmission rate than that of commercial tapes. In addition, the ion permeability test revealed that α-CD/2.5C9-PVA (w/w = 0.5) ICF exhibited excellent Na and Cl ion permeability. These results demonstrated that the multi-functional α-CD/2.5C9-PVA (w/w = 0.5) ICF can be a promising adhesive for skin contact medical devices.
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Affiliation(s)
- Xi Chen
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tetsushi Taguchi
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
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3
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Chen X, Taguchi T. Bonding a titanium plate and soft tissue interface by using an adhesive bone paste composed of α-tricalcium phosphate and α-cyclodextrin/nonanyl group-modified poly(vinyl alcohol) inclusion complex. Colloids Surf B Biointerfaces 2021; 203:111757. [PMID: 33862571 DOI: 10.1016/j.colsurfb.2021.111757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 10/21/2022]
Abstract
Adhesive bone pastes for dental implants and soft tissue interfaces were developed using α-tricalcium phosphate (α-TCP) and α-cyclodextrin (α-CD)/nonanyl group-modified poly(vinyl alcohol) (C9-PVA) inclusion complex solution (ICS). The thixotropic solution of α-CD/C9-PVA ICS was prepared by mixing α-CD and C9-PVA in deionized water. The α-CD/C9-PVA bone paste led to the highest bonding and shear adhesion between commercial pure titanium plates and soft tissue like collagen casing. Moreover, the compressive strength of these pastes reached 14.1 ± 3.8 MPa within 24 h incubation. Young's modulus of the α-CD/C9-PVA bone paste was lower than that of commercial calcium phosphate paste. Furthermore, the surface of α-CD/C9-PVA bone paste demonstrated excellent cell adhesion for cultured L929 fibroblast cells. Overall, the α-CD/C9-PVA bone paste can likely be effectively used to adhere dental implant abutments and soft tissue interfaces.
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Affiliation(s)
- Xi Chen
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tetsushi Taguchi
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
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4
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Chen X, Taguchi T. Enhanced skin adhesive property of electrospun α-cyclodextrin/nonanyl group-modified poly(vinyl alcohol) inclusion complex fiber sheet. RSC Adv 2021; 11:8759-8766. [PMID: 35423382 PMCID: PMC8695218 DOI: 10.1039/d1ra00422k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 02/18/2021] [Indexed: 11/27/2022] Open
Abstract
Many medical tapes on the market lack sufficient adhesive strength and breathability. Owing to its high biocompatibility, poly(vinyl alcohol) (PVA), a synthetic polymer, has attracted attention in the medical field. In this study, we aimed to prepare an inclusion complex fiber (ICFiber) using α-cyclodextrin (α-CD) and nonanyl-group-modified PVA (C9-PVA) for skin adhesion with improved performance. By changing the concentration of α-CD, six microfiber sheets were fabricated by electrospinning the α-CD/2.3C9-PVA inclusion complex solutions. The bonding strength and energy of the ICFiber sheets on the porcine skin were evaluated. Among the tested ICFiber sheets, the ICFiber-3 (molar ratio of α-CD/C9 groups was 0.612) sheet showed high tensile strength and break strain. The bonding strength and energy of ICFiber-3 sheet on porcine skin were 1.10 ± 0.11 N and 5.07 ± 0.94 J m-2, respectively, in the presence of water. In addition, ICFiber-3 sheet showed a better water vapor transmission rate (0.95 ± 0.02 mL per day) than commercial tapes. These results demonstrate that the α-CD/2.3C9-PVA ICFiber sheet is a promising adhesive for wearable medical devices.
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Affiliation(s)
- Xi Chen
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science 1-1 Namiki, Tsukuba Ibaraki 305-0044 Japan
| | - Tetsushi Taguchi
- Polymers and Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science 1-1 Namiki, Tsukuba Ibaraki 305-0044 Japan
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5
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MacIntire IC, Dowling MB, Raghavan SR. How Do Amphiphilic Biopolymers Gel Blood? An Investigation Using Optical Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8357-8366. [PMID: 32678610 DOI: 10.1021/acs.langmuir.0c00409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amphiphilic biopolymers such as hydrophobically modified chitosan (hmC) have been shown to convert liquid blood into elastic gels. This interesting property could make hmC useful as a hemostatic agent in treating severe bleeding. The mechanism for blood gelling by hmC is believed to involve polymer-cell self-assembly, i.e., insertion of hydrophobic side chains from the polymer into the lipid bilayers of blood cells, thereby creating a network of cells bridged by hmC. Here, we probe the above mechanism by studying dilute mixtures of blood cells and hmC in situ using optical microscopy. Our results show that the presence of hydrophobic side chains on hmC induces significant clustering of blood cells. The extent of clustering is quantified from the images in terms of the area occupied by the 10 largest clusters. Clustering increases as the fraction of hydrophobic side chains increases; conversely, clustering is negligible in the case of the parent chitosan that lacks hydrophobes. Moreover, the longer the hydrophobic side chains, the greater the clustering (i.e., C12 > C10 > C8 > C6). Clustering is negligible at low hmC concentrations but becomes substantial above a certain threshold. Finally, clustering due to hmC can be reversed by adding the supramolecule α-cyclodextrin, which is known to capture hydrophobes in its binding pocket. Overall, the results from this work are broadly consistent with the earlier mechanism, albeit with a few modifications.
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Affiliation(s)
- Ian C MacIntire
- Department of Chemical & Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Matthew B Dowling
- Department of Chemical & Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Srinivasa R Raghavan
- Department of Chemical & Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, United States
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6
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Chen X, Taguchi T. Enhanced Skin Adhesive Property of Hydrophobically Modified Poly(vinyl alcohol) Films. ACS OMEGA 2020; 5:1519-1527. [PMID: 32010825 PMCID: PMC6990645 DOI: 10.1021/acsomega.9b03305] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 12/18/2019] [Indexed: 05/05/2023]
Abstract
Hydrophobically modified poly(vinyl alcohol) (hm-PVA) films with various alkyl chain lengths were prepared. Their surface/mechanical properties, cytocompatibility, and porcine skin adhesion strength were evaluated. hm-PVAs had 10 °C higher glass transition temperature than poly(vinyl alcohol) (PVA) (33.4 ± 2.5 °C). The water contact angle of the hm-PVA films increased with alkyl chain length and/or hydrophobic group modification ratio. The tensile strength of the hm-PVA films decreased with increasing alkyl chain length and/or hydrophobic group modification ratio. hm-PVA with short chain lengths (4 mol % propanal-modified PVA; 4C3-PVA) had low cytotoxicity compared with long alkyl chain length hm-PVAs (4 mol % hexanal and nonanal-modified PVA; 4C6-PVA and 4C9-PVA). The 4C3-PVA film had the highest porcine skin adhesion strength. Thus, the 4C3-PVA film is promising as an adhesive for wearable medical devices.
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Affiliation(s)
- Xi Chen
- Graduate
School of Pure and Applied Sciences, University
of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Biomaterials
Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Tetsushi Taguchi
- Graduate
School of Pure and Applied Sciences, University
of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Biomaterials
Field, Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- E-mail: . Phone: +81-29-851-4498. Fax: +81-29-860-4752
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7
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Design of bio-inspired adhesive surface composed of hexanoyl group-modified gelatin and silicon nanowire. Colloids Surf B Biointerfaces 2019; 178:111-119. [DOI: 10.1016/j.colsurfb.2019.02.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/06/2018] [Accepted: 02/27/2019] [Indexed: 11/18/2022]
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8
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Cell membrane engineering with synthetic materials: Applications in cell spheroids, cellular glues and microtissue formation. Acta Biomater 2019; 90:21-36. [PMID: 30986529 DOI: 10.1016/j.actbio.2019.04.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/26/2019] [Accepted: 04/03/2019] [Indexed: 12/16/2022]
Abstract
Biologically inspired materials with tunable bio- and physicochemical properties provide an essential framework to actively control and support cellular behavior. Cell membrane remodeling approaches benefit from the advances in polymer science and bioconjugation methods, which allow for the installation of un-/natural molecules and particles on the cells' surface. Synthetically remodeled cells have superior properties and are under intense investigation in various therapeutic scenarios as cell delivery systems, bio-sensing platforms, injectable biomaterials and bioinks for 3D bioprinting applications. In this review article, recent advances in the field of cell surface remodeling via bio-chemical means and the potential biomedical applications of these emerging cell hybrids are discussed. STATEMENT OF SIGNIFICANCE: Recent advances in bioconjugation methods, controlled/living polymerizations, microfabrication techniques and 3D printing technologies have enabled researchers to probe specific cellular functions and cues for therapeutic and research purposes through the formation of cell spheroids and polymer-cell chimeras. This review article highlights recent non-genetic cell membrane engineering strategies towards the fabrication of cellular ensembles and microtissues with interest in 3D in vitro modeling, cell therapeutics and tissue engineering. From a wider perspective, these approaches may provide a roadmap for future advances in cell therapies which will expedite the clinical use of cells, thereby improving the quality and accessibility of disease treatments.
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9
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10
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Salg GA, Giese NA, Schenk M, Hüttner FJ, Felix K, Probst P, Diener MK, Hackert T, Kenngott HG. The emerging field of pancreatic tissue engineering: A systematic review and evidence map of scaffold materials and scaffolding techniques for insulin-secreting cells. J Tissue Eng 2019; 10:2041731419884708. [PMID: 31700597 PMCID: PMC6823987 DOI: 10.1177/2041731419884708] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/04/2019] [Indexed: 12/18/2022] Open
Abstract
A bioartificial endocrine pancreas is proposed as a future alternative to current treatment options. Patients with insulin-secretion deficiency might benefit. This is the first systematic review that provides an overview of scaffold materials and techniques for insulin-secreting cells or cells to be differentiated into insulin-secreting cells. An electronic literature survey was conducted in PubMed/MEDLINE and Web of Science, limited to the past 10 years. A total of 197 articles investigating 60 different materials met the inclusion criteria. The extracted data on materials, cell types, study design, and transplantation sites were plotted into two evidence gap maps. Integral parts of the tissue engineering network such as fabrication technique, extracellular matrix, vascularization, immunoprotection, suitable transplantation sites, and the use of stem cells are highlighted. This systematic review provides an evidence-based structure for future studies. Accumulating evidence shows that scaffold-based tissue engineering can enhance the viability and function or differentiation of insulin-secreting cells both in vitro and in vivo.
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Affiliation(s)
- Gabriel Alexander Salg
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Nathalia A Giese
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Miriam Schenk
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Felix J Hüttner
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Klaus Felix
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Pascal Probst
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Markus K Diener
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Thilo Hackert
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Hannes Götz Kenngott
- Department of General, Abdominal and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
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11
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Yang M, Li Y, Wang W, Yuan Z, Li Y. Construction of a Linear Cell Cross-Linker with Multivalent Glycyrrhetinic Acid Ligands for Rapid Formation of Hepatocyte Spheroids. ACS Biomater Sci Eng 2018; 4:3570-3577. [PMID: 33465921 DOI: 10.1021/acsbiomaterials.8b01036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report herein the development of a novel cellular cross-linker further employed in the construction of hepatocellular spheroids based on multivalent strategy. The linker structure consists of a glycyrrhetinic acid derivative (GA-N(CH3)2) modified alginate (ALG). GA-N(CH3)2 is selected as the recognition ligand due to its high affinity toward hepatocyte, whereas ALG represents the linear backbone accounting for its good biocompatibility and flexible structure. These features endow the cellular cross-linker with the ability to flexibly interact with the cell through multiple binding sites, providing superior binding force between the cell and cross-linker, and subsequently rapidly combining multiple cells into cellular spheroids.
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Affiliation(s)
- Meiyao Yang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yingying Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei Wang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhi Yuan
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| | - Yu Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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12
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Mizuta R, Taguchi T. Hemostatic properties of in situ gels composed of hydrophobically modified biopolymers. J Biomater Appl 2018; 33:315-323. [DOI: 10.1177/0885328218790313] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Hemorrhaging often occurs during cardiac surgery, and postoperative bleeding is associated with medical complications or even death. Medical complications resulting from hemorrhaging can lead to longer hospital stays, thus increasing costs. Hemostatic agents are the main treatment for bleeding. In the present study, hemostatic agents composed of aldehyde groups and hydrophobically modified with hyaluronic acid (ald-hm-HyA) and hydrophobically modified gelatin (hm-ApGltn) were developed and their hemostatic effects were evaluated. These modified hemostatic agents formed more stable blood clots compared with the nonhydrophobically modified HyA-based hemostatic agent. The bulk strength of the whole blood clot using the aldehyde and stearoyl group-modified hyaluronic acid (ald-C18-HyA)/hm-ApGltn-based hemostatic agent was higher than that of the aldehyde group only modified HyA (ald-HyA)/hm-ApGltn-based hemostatic agent. Rheological experiments using α-cyclodextrin showed that hydrophobic modification of HyA with C18 groups effectively enhanced anchoring to the red blood cell surface. Therefore, the ald-hm-HyA/hm-ApGltn-based hemostatic agent has potential applications in cardiac surgery.
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Affiliation(s)
- Ryo Mizuta
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Tetsushi Taguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Biomaterials Field, Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
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Effect of alkyl chain length on the interfacial strength of surgical sealants composed of hydrophobically-modified Alaska-pollock-derived gelatins and poly(ethylene)glycol-based four-armed crosslinker. Colloids Surf B Biointerfaces 2016; 146:212-20. [DOI: 10.1016/j.colsurfb.2016.06.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 06/08/2016] [Accepted: 06/10/2016] [Indexed: 11/17/2022]
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14
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Chen Z, Lian F, Wang X, Chen Y, Tang N. Arginine-glycine-aspartic acid-polyethylene glycol-polyamidoamine dendrimer conjugate improves liver-cell aggregation and function in 3-D spheroid culture. Int J Nanomedicine 2016; 11:4247-59. [PMID: 27621619 PMCID: PMC5012632 DOI: 10.2147/ijn.s113407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The polyamidoamine (PAMAM) dendrimer, a type of macromolecule material, has been used in spheroidal cell culture and drug delivery in recent years. However, PAMAM is not involved in the study of hepatic cell-spheroid culture or its biological activity, particularly in detoxification function. Here, we constructed a PAMAM-dendrimer conjugate decorated by an integrin ligand: arginine-glycine-aspartic acid (RGD) peptide. Our studies demonstrate that RGD-polyethylene glycol (PEG)-PAMAM conjugates can promote singly floating hepatic cells to aggregate together in a sphere-like growth with a weak reactive oxygen species. Moreover, RGD-PEG-PAMAM conjugates can activate the AKT-MAPK pathway in hepatic cells to promote cell proliferation and improve basic function and ammonia metabolism. Together, our data support the hepatocyte sphere treated by RGD-PEG-PAMAM conjugates as a potential source of hepatic cells for a biological artificial liver system.
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Affiliation(s)
- Zhanfei Chen
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital
| | - Fen Lian
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital
| | - Xiaoqian Wang
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital
| | - Yanling Chen
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Research Center for Molecular Medicine, Fujian Medical University, Fuzhou, People’s Republic of China
| | - Nanhong Tang
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Research Center for Molecular Medicine, Fujian Medical University, Fuzhou, People’s Republic of China
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15
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Itagaki T, Arima Y, Kuwabara R, Kitamura N, Iwata H. Interaction between cells and poly(ethylene glycol)-lipid conjugates. Colloids Surf B Biointerfaces 2015; 135:765-773. [DOI: 10.1016/j.colsurfb.2015.08.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 07/15/2015] [Accepted: 08/17/2015] [Indexed: 11/30/2022]
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16
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Chitosan as inter-cellular linker to accelerate multicellular spheroid generation in hydrogel scaffold. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Taguchi T, Endo Y. Crosslinking liposomes/cells using cholesteryl group-modified tilapia gelatin. Int J Mol Sci 2014; 15:13123-34. [PMID: 25056548 PMCID: PMC4139895 DOI: 10.3390/ijms150713123] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 07/14/2014] [Accepted: 07/15/2014] [Indexed: 11/17/2022] Open
Abstract
Cholesteryl group-modified tilapia gelatins (Chol-T-Gltns) with various Chol contents from 3 to 69 mol % per amino group of Gltn were prepared for the assembly of liposomes and cells. Liposomes were physically crosslinked by anchoring Chol groups of Chol-T-Gltns into lipid membranes. The resulting liposome gels were enzymatically degraded by addition of collagenase. Liposome gels prepared using Chol-T-Gltn with high Chol content (69Chol-T-Gltn) showed slower enzymatic degradation when compared with gels prepared using Chol-T-Gltn with low Chol content (3Chol-T-Gltn). The hepatocyte cell line HepG2 showed good assembly properties and no cytotoxic effects after addition of 69Chol-T-Gltns. In addition, the number of HepG2 cells increased with concentration of 69Chol-T-Gltns. Therefore, Chol-T-Gltn, particularly, 69Chol-T-Gltn, can be used as an assembling material for liposomes and various cell types. The resulting organization can be applied to various biomedical fields, such as drug delivery systems, tissue engineering and regenerative medicine.
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Affiliation(s)
- Tetsushi Taguchi
- Biomaterials Unit, Nano-Life Field, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | - Yoshiaki Endo
- Biomaterials Unit, Nano-Life Field, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
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18
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Amphiphilic macromolecules on cell membranes: from protective layers to controlled permeabilization. J Membr Biol 2014; 247:861-81. [PMID: 24903487 DOI: 10.1007/s00232-014-9679-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 05/09/2014] [Indexed: 12/13/2022]
Abstract
Antimicrobial and cell-penetrating peptides have inspired developments of abiotic membrane-active polymers that can coat, penetrate, or break lipid bilayers in model systems. Application to cell cultures is more recent, but remarkable bioactivities are already reported. Synthetic polymer chains were tailored to achieve (i) high biocide efficiencies, and selectivity for bacteria (Gram-positive/Gram-negative or bacterial/mammalian membranes), (ii) stable and mild encapsulation of viable isolated cells to escape immune systems, (iii) pH-, temperature-, or light-triggered interaction with cells. This review illustrates these recent achievements highlighting the use of abiotic polymers, and compares the major structural determinants that control efficiency of polymers and peptides. Charge density, sp. of cationic and guanidinium side groups, and hydrophobicity (including polarity of stimuli-responsive moieties) guide the design of new copolymers for the handling of cell membranes. While polycationic chains are generally used as biocidal or hemolytic agents, anionic amphiphilic polymers, including Amphipols, are particularly prone to mild permeabilization and/or intracell delivery.
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Highly robust protein production by co-culture of CHO spheroids layered on feeder cells in serum-free medium. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-013-3093-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Enhanced bonding strength of hydrophobically modified gelatin films on wet blood vessels. Int J Mol Sci 2014; 15:2142-56. [PMID: 24481063 PMCID: PMC3958842 DOI: 10.3390/ijms15022142] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/15/2014] [Accepted: 01/22/2014] [Indexed: 11/16/2022] Open
Abstract
The bonding behavior between hydrophobically modified alkaline-treated gelatin (hm-AlGltn) films and porcine blood vessels was evaluated under wet conditions. Hexanoyl (Hx: C6), decanoyl (Dec: C10), and stearyl (Ste: C18) chlorides were introduced into the amino groups of AlGltn to obtain HxAlGltn, DecAlGltn, and SteAlGltn, respectively, with various modification percentages. The hm-AlGltn was fabricated into films and thermally crosslinked to obtain water-insoluble films (t-hm-AlGltn). The 42% modified t-HxAlGltn (t-42HxAlGltn) possessed higher wettability than the 38% modified t-DecAlGltn (t-38DecAlGltn) and the 44% modified t-SteAlGltn (t-44SteAlGltn) films, and the t-42HxAlGltn film showed a high bonding strength with the blood vessel compared with all the hm-AlGltn films. Histological observations indicated that t-42HxAlGltn and t-38DecAlGltn remained on the blood vessel even after the bonding strength measurements. From cell culture experiments, the t-42HxAlGltn films showed significant cell adhesion compared to other films. These findings indicate that the Hx group easily interpenetrated the surface of blood vessels and effectively enhanced the bonding strength between the films and the tissue.
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Javvaji V, Dowling MB, Oh H, White IM, Raghavan SR. Reversible gelation of cells using self-assembling hydrophobically-modified biopolymers: towards self-assembly of tissue. Biomater Sci 2014; 2:1016-1023. [DOI: 10.1039/c4bm00017j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Development of amphiphilic, enzymatically-degradable PEG-peptide conjugate as cell crosslinker for spheroid formation. Colloids Surf B Biointerfaces 2013; 101:223-7. [DOI: 10.1016/j.colsurfb.2012.06.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 06/26/2012] [Indexed: 11/19/2022]
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Matsuda M, Taguchi T. In vitro evaluation of tissue adhesives composed of hydrophobically modified gelatins and disuccinimidyl tartrate. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064212. [PMID: 27877539 PMCID: PMC5099772 DOI: 10.1088/1468-6996/13/6/064212] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 10/17/2012] [Indexed: 06/06/2023]
Abstract
The effect of the hydrophobic group content in gelatin on the bonding strength of novel tissue-penetrating tissue adhesives was evaluated. The hydrophobic groups introduced into gelatin were the saturated hexanoyl, palmitoyl, and stearoyl groups, and the unsaturated oleoyl group. A collagen casing was employed as an adherend to model soft tissue for the in vitro determination of bonding strength of tissue adhesives composed of various hydrophobically modified gelatins and disuccinimidyl tartrate. The adhesive composed of stearoyl-modified gelatin (7.4% stearoyl; 10Ste) and disuccinimidyl tartrate showed the highest bonding strength. The bonding strength of the adhesives decreased as the degree of substitution of the hydrophobic groups increased. Cell culture experiments demonstrated that fluorescein isothiocyanate-labeled 10Ste was integrated onto the surface of smooth muscle cells and showed no cytotoxicity. These results suggest that 10Ste interacted with the hydrophobic domains of collagen casings, such as hydrophobic amino acid residues and cell membranes. Therefore, 10Ste-disuccinimidyl tartrate is a promising adhesive for use in aortic dissection.
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Affiliation(s)
- Miyuki Matsuda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Unit, Nano-Bio field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tetsushi Taguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Unit, Nano-Bio field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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Matsuda M, Inoue M, Taguchi T. Adhesive properties and biocompatibility of tissue adhesives composed of various hydrophobically modified gelatins and disuccinimidyl tartrate. J BIOACT COMPAT POL 2012. [DOI: 10.1177/0883911512455116] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Adhesives comprising hydrophobically modified gelatin and disuccinimidyl tartrate were prepared with the aim of developing novel tissue adhesives with tissue-penetrating capability and biocompatibility. The hydrophobic groups employed were hexanoyl (Hx; C6), palmitoyl (Pam; C16), stearoyl (Ste; C18), and oleoyl (Ole; C18 unsaturated) groups. The bonding strength of the resulting tissue adhesives against fresh arterial media increased with increasing chain length of the saturated hydrocarbon up to C18 (Ste) when the degree of substitution of hydrocarbons in the hydrophobically modified gelatin molecule was 10% (10Ste) with a fixed succinimidyl group:amino group ratio of 1:1. The 10Ole–disuccinimidyl tartrate adhesive showed slightly lower bonding strength compared with 10Ste–disuccinimidyl tartrate adhesive. In contrast, the use of hydrophobically modified gelatin with a high substitution ratio (50%) showed lower bonding strength compared with the original gelatin. The peeling strength of 10Ste–disuccinimidyl tartrate and 10Ole–disuccinimidyl tartrate adhesives was similar and high compared with other adhesives. Based on the quantitative determination of biocompatibility, using nuclear factor-kappa B/luciferase transgenic mice (BALB/C-Tg (NF-κB-RE-luc)-Xen), the level of inflammation associated with 10Ste–disuccinimidyl tartrate adhesive was quite low compared with commercial aldehyde-based adhesive. From these results, 10Ste–disuccinimidyl tartrate adhesive possesses excellent biocompatibility as well as high bonding/peeling strength and, therefore, has potential use in clinical applications.
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Affiliation(s)
- Miyuki Matsuda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Motoki Inoue
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Tetsushi Taguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki, Japan
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Rao Z, Taguchi T. Spectroscopic studies on interactions between cholesterol-end capped polyethylene glycol and liposome. Colloids Surf B Biointerfaces 2012; 97:248-53. [PMID: 22608201 DOI: 10.1016/j.colsurfb.2012.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 03/26/2012] [Accepted: 03/27/2012] [Indexed: 10/28/2022]
Abstract
In order to confirm that the cholesterol end groups of cholesterol-end capped polyethylene glycol really insert into the liposome bilayer and investigate how the incorporation affects the microenvironment of liposome bilayer, two kinds of molecular probes, namely Nile Red and pinacyanol chloride, were used. Their UV-visible and fluorescence spectrum were recorded before and after the addition of the polymer. Shifts of the maximum absorbance (λ(max)) of Nile Red show that the bilayer microenvironment around Nile Red is becoming more polar with increasing polymer concentration while shifts of λ(max) of pinacyanol chloride indicate that the surrounding environment of pinacyanol chloride is becoming more apolar with addition of polymer. Effect of composition of liposome was also studied. With high ratio of dimethyldioctadecylammonium bromide (DODAB) fraction in liposome, λ(max) of Nile Red is more easily affected by the addition of Chol-PEG-Chol while liposome with cholesterol shows relatively high stability to the addition of Chol-PEG-Chol.
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Affiliation(s)
- Zhi Rao
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Matsuda M, Inoue M, Taguchi T. Enhanced bonding strength of a novel tissue adhesive consisting of cholesteryl group-modified gelatin and disuccinimidyl tartarate. J BIOACT COMPAT POL 2012. [DOI: 10.1177/0883911511434426] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The bonding strength and biocompatibility of a novel tissue adhesive consisting of cholesteryl group-modified gelatin and disuccinimidyl tartarate was evaluated. The approach was based on hydrophobically-modified gelatin to enhance the penetration of an adhesive into tissue. Disuccinimidyl tartarate was used to cross-link the cholesteryl group-modified gelatin. The cholesteryl group-modified gelatin was prepared by partially converting the gelatin amino groups with cholesteryl chloroformate. The bonding strength was evaluated by mixing cholesteryl group-modified gelatin and unmodified gelatin with the fixed amino groups/active ester groups of disuccinimidyl tartarate. The bonding strength of the resulting tissue adhesive was 1.7 times greater than the commercial aldehyde-based adhesive. The level of inflammation transcription factor, nuclear factor-kappa B, of the new tissue adhesive was significantly lower compared to the aldehyde-based adhesive after subcutaneous implantation. These results indicate that hydrophobic groups, such as cholesteryl, enhance tissue penetration as well as increase the bonding strength of tissue adhesive without a negative effect on the biocompatibility.
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Affiliation(s)
- Miyuki Matsuda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Biomaterials Unit, Nano-bio field, Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Motoki Inoue
- Biomaterials Unit, Nano-bio field, Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Tetsushi Taguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
- Biomaterials Unit, Nano-bio field, Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Taguchi T. Assembly of cells and vesicles for organ engineering. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2011; 12:064703. [PMID: 27877453 PMCID: PMC5090668 DOI: 10.1088/1468-6996/12/6/064703] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Revised: 10/10/2011] [Accepted: 07/29/2011] [Indexed: 06/02/2023]
Abstract
The development of materials and technologies for the assembly of cells and/or vesicles is a key for the next generation of tissue engineering. Since the introduction of the tissue engineering concept in 1993, various types of scaffolds have been developed for the regeneration of connective tissues in vitro and in vivo. Cartilage, bone and skin have been successfully regenerated in vitro, and these regenerated tissues have been applied clinically. However, organs such as the liver and pancreas constitute numerous cell types, contain small amounts of extracellular matrix, and are highly vascularized. Therefore, organ engineering will require the assembly of cells and/or vesicles. In particular, adhesion between cells/vesicles will be required for regeneration of organs in vitro. This review introduces and discusses the key technologies and materials for the assembly of cells/vesicles for organ regeneration.
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Affiliation(s)
- Tetsushi Taguchi
- Biofunctional Materials Unit, Nano-Bio Field, Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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Abstract
Pancreatic islet transplantation is a therapeutic option to replace destroyed β cells in autoimmune diabetes. Islets are transplanted into the liver via the portal vein; however, inflammation, the required immunosuppression, and lack of vasculature decrease early islet viability and function. Therefore, the use of accessory therapy and biomaterials to protect islets and improve islet function has definite therapeutic potential. Here we review the application of niche accessory cells and factors, as well as the use of biomaterials as carriers or capsules, for pancreatic islet transplantation.
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Affiliation(s)
- Danielle J. Borg
- Preclinical Approaches to Stem Cell Therapy/Diabetes, Technische Universität Dresden, DFG-Center for Regenerative Therapies Dresden, Cluster of Excellence, Tatzberg 47/49, 01307 Dresden, Germany
| | - Ezio Bonifacio
- Preclinical Approaches to Stem Cell Therapy/Diabetes, Technische Universität Dresden, DFG-Center for Regenerative Therapies Dresden, Cluster of Excellence, Tatzberg 47/49, 01307 Dresden, Germany
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Taguchi T, Rao Z, Ito M, Matsuda M. Induced albumin secretion from HepG2 spheroids prepared using poly(ethylene glycol) derivative with oleyl groups. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:2357-2363. [PMID: 21842139 DOI: 10.1007/s10856-011-4414-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 08/03/2011] [Indexed: 05/31/2023]
Abstract
We developed a poly(ethylene glycol) (PEG) derivative with oleyl groups, so-called "cell adhesive", for the promotion of human hepatocellular carcinoma HepG2 cell spheroids. Our approach was based on crosslinking of the cell membrane with a cell adhesive via a hydrophobic interaction. A cell adhesive, PEG derivative with hydrophobic oleyl groups at both ends was synthesized and characterized. HepG2 spheroids formed when the adhesive was added to cell suspensions. The size of the spheroids increased with time in culture. In addition, Ammonia elimination of HepG2 spheroid with cell adhesive was 3.4 times higher than that without cell adhesive. Furthermore, albumin secretion from HeG2 spheroids grown with the cell adhesive for 7 days was 3.3 times that from HepG2 spheroids grown without cell adhesive. Fluorescence microscopy showed greater albumin staining in spheroids grown with cell adhesive compared with spheroids grown without adhesive. This cell adhesive may be useful not only for single type of cells but also for multi types of cells to form artificial organs. This cell adhesive will be a key material for liver tissue engineering when it will apply to primary hepatocytes.
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Affiliation(s)
- Tetsushi Taguchi
- Biomaterials Center, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, 305-0044, Japan.
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Rao Z, Inoue M, Matsuda M, Taguchi T. Quick self-healing and thermo-reversible liposome gel. Colloids Surf B Biointerfaces 2011; 82:196-202. [DOI: 10.1016/j.colsurfb.2010.08.038] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 08/23/2010] [Accepted: 08/24/2010] [Indexed: 11/29/2022]
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Mo X, Li Q, Yi Lui LW, Zheng B, Kang CH, Nugraha B, Yue Z, Jia RR, Fu HX, Choudhury D, Arooz T, Yan J, Lim CT, Shen S, Hong Tan C, Yu H. Rapid construction of mechanically- confined multi- cellular structures using dendrimeric intercellular linker. Biomaterials 2010; 31:7455-67. [DOI: 10.1016/j.biomaterials.2010.06.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Accepted: 06/04/2010] [Indexed: 10/19/2022]
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