1
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Nagase K, Kojima N, Goto M, Akaike T, Kanazawa H. Thermoresponsive block copolymer brush for temperature-modulated hepatocyte separation. J Mater Chem B 2022; 10:8629-8641. [PMID: 35972447 DOI: 10.1039/d2tb01384c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hepatic tissue engineering may be an effective approach for the treatment of liver disease; however, its practical application requires hepatic cell separation technologies that do not involve cell surface modification and maintain cell activity. In this study, we developed hepatocyte cell separation materials using a thermoresponsive polymer and a polymer with high affinity to hepatocytes. A block copolymer of poly(N-p-vinylbenzyl-O-β-D-galactopyranosyl-(1→4)-D-gluconamide) (PVLA) and poly(N-isopropylacrylamide) (PNIPAAm) [PVLA-b-PNIPAAm] was prepared through two steps of atom transfer radical polymerization. On the prepared PVLA-b-PNIPAAm brush, HepG2 cells (model hepatocytes) adhered at 37 °C and detached at 20 °C, attributed to the temperature-modulated affinity between PVLA and HepG2. Cells from the immortalized human hepatic stellate cell line (TWNT-1) did not adhere to the copolymer brush, and RAW264.7 cells (mouse macrophage; model Kupffer cells) adhered to the copolymer brush, regardless of temperature. Using the difference in cell adhesion properties on the copolymer brush, temperature-modulated cell separation was successfully demonstrated. A mixture of HepG2, RAW264.7, and TWNT-1 cells was seeded on the copolymer brush at 37 °C for adherence. By reducing the temperature to 20 °C, adhered HepG2 cells were selectively recovered with a purity of approximately 85% and normal activity. In addition, induced pluripotent stem (iPS) cell-derived hepatocytes adhered on the PVLA-b-PNIPAAm brush at 37 °C and detached from the copolymer brush at 20 °C, whereas the undifferentiated iPS cells did not adhere, indicating that the prepared PVLA-b-PNIPAAm brush could be utilized to separate hepatocyte differentiated and undifferentiated cells. These results indicated that the newly developed PVLA-b-PNIPAAm brush can separate hepatic cells from contaminant cells by temperature modulation, without affecting cell activity or modifying the cell surface. Thus, the copolymer brush is expected to be a useful separation tool for cell therapy and tissue engineering using hepatocytes.
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Affiliation(s)
- Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
| | - Naoto Kojima
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
| | - Mitsuaki Goto
- Biomaterials Center for Regenerative Medical Engineering, Foundation for Advancement of International Science, 24-16 Kasuga, 3-chome, Tsukuba, Ibaraki 305-0821, Japan
| | - Toshihiro Akaike
- Biomaterials Center for Regenerative Medical Engineering, Foundation for Advancement of International Science, 24-16 Kasuga, 3-chome, Tsukuba, Ibaraki 305-0821, Japan
| | - Hideko Kanazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
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2
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Sasikumar S, Boden A, Chameettachal S, Cipolla L, Cromer B, Kingshott P, Pati F. Galactose Tethered Decellularized Liver Matrix: Toward a Biomimetic and Biofunctional Matrix for Liver Tissue Engineering. ACS APPLIED BIO MATERIALS 2022; 5:3023-3037. [PMID: 35548974 DOI: 10.1021/acsabm.2c00330] [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: 11/30/2022]
Abstract
The major challenge in liver tissue engineering is the replication of the microenvironment and microarchitecture of the liver tissue at the nanoscale. Decellularized liver matrix (DLM) provides an ideal material for scaffold preparation, as it retains the relevant structural and biochemical composition. However, the loss of bioactive factors during decellularization needs to be taken into account when using DLM and should be supplemented accordingly for an expected outcome. This study reports on the modification of DLM by the addition of galactose residues using a two-step thiol-ene-mediated photoclick chemistry for the coupling of galactose moieties to the DLM. Modification with galactose enhanced the function of hepatocytes and provides many advantages over currently used DLM and DLM-based materials. The galactose modified DLM enhanced the initial HepG2 cell adhesion to the substrate with changes in dynamics over time such as spheroid formation and further migration on the matrix. Our observation is that the galactose ligand decoration can also enhance the liver-specific metabolism of HepG2 compared to unmodified DLM. Galactosylated DLM also showed a better establishment of cellular polarity which also contributes to the function of HepG2 cells. Together our results demonstrate the advantages of adding galactose residues to currently available biomaterials, which makes this approach an attractive method for ECM-based liver tissue engineering.
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Affiliation(s)
- Shyama Sasikumar
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284 Telangana, India.,Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Andrew Boden
- Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Shibu Chameettachal
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284 Telangana, India
| | - Laura Cipolla
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Brett Cromer
- Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.,ARC Training Centre Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Engineering, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Falguni Pati
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284 Telangana, India
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3
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Liu W, Zhang M, Xiao Y, Ye Z, Zhou Y, Lang M, Tan WS. Fabrication and in vitro evaluation of a packed-bed bioreactor based on galactosylated poly(ethylene terephthalate) microfibrous scaffolds. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Kang JM, Rajangam T, Rhie JW, Kim SH. Characterization of cell signaling, morphology, and differentiation potential of human mesenchymal stem cells based on cell adhesion mechanism. J Cell Physiol 2020; 235:6915-6928. [PMID: 32017071 DOI: 10.1002/jcp.29587] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 01/13/2020] [Indexed: 12/24/2022]
Abstract
It is essential to characterize the cellular properties of mesenchymal stem cell populations to maintain quality specifications and control in regenerative medicine. Biofunctional materials have been designed as artificial matrices for the stimulation of cell adhesion and specific cellular functions. We have developed recombinant maltose-binding protein (MBP)-fused proteins as artificial adhesion matrices to control human mesenchymal stem cell (hMSC) fate by using an integrin-independent heparin sulfate proteoglycans-mediated cell adhesion. In this study, we characterize cell adhesion-dependent cellular behaviors of human adipose-derived stem cells (hASCs) and human bone marrow stem cells (hBMSCs). We used an MBP-fused basic fibroblast growth factor (MF)-coated surface and fibronectin (FN)-coated surface to restrict and support, respectively, integrin-mediated adhesion. The cells adhered to MF exhibited restricted actin cytoskeleton organization and focal adhesion kinase phosphorylation. The hASCs and hBMSCs exhibited different cytoplasmic projection morphologies on MF. Both hASCs and hBMSCs differentiated more dominantly into osteogenic cells on FN than on MF. In contrast, hASCs differentiated more dominantly into adipogenic cells on MF than on FN, whereas hBMSCs differentiated predominantly into adipogenic cells on FN. The results indicate that hASCs exhibit a competitive differentiation potential (osteogenesis vs. adipogenesis) that depends on the cell adhesion matrix, whereas hBMSCs exhibit both adipogenesis and osteogenesis in integrin-mediated adhesion and thus hBMSCs have noncompetitive differentiation potential. We suggest that comparing differentiation behaviors of hMSCs with the diversity of cell adhesion is an important way to characterize hMSCs for regenerative medicine.
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Affiliation(s)
- Jung-Mi Kang
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, South Korea
| | - Thanavel Rajangam
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, South Korea
| | - Jong-Won Rhie
- Department of Plastic Surgery, College of Medicine, Catholic University of Korea, Seoul, South Korea
| | - Sang-Heon Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, South Korea
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5
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Affiliation(s)
- Azis Adharis
- Macromolecular Chemistry and New Polymeric MaterialsZernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Katja Loos
- Macromolecular Chemistry and New Polymeric MaterialsZernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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6
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Zhang H, Zheng X, Ahmed W, Yao Y, Bai J, Chen Y, Gao C. Design and Applications of Cell-Selective Surfaces and Interfaces. Biomacromolecules 2018; 19:1746-1763. [PMID: 29665330 DOI: 10.1021/acs.biomac.8b00264] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Tissue regeneration involves versatile types of cells. The accumulation and disorganized behaviors of undesired cells impair the natural healing process, leading to uncontrolled immune response, restenosis, and/or fibrosis. Cell-selective surfaces and interfaces can have specific and positive effects on desired types of cells, allowing tissue regeneration with restored structures and functions. This review outlines the importance of surfaces and interfaces of biomaterials with cell-selective properties. The chemical and biological cues including peptides, antibodies, and other molecules, physical cues such as topography and elasticity, and physiological cues referring mainly to interactions between cells-cells and cell-chemokines or cytokines are effective modulators for achieving cell selectivity upon being applied into the design of biomaterials. Cell-selective biomaterials have also shown practical significance in tissue regeneration, in particular for endothelialization, nerve regeneration, capture of stem cells, and regeneration of tissues of multiple structures and functions.
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Affiliation(s)
- Haolan Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Xiaowen Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Wajiha Ahmed
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Yuejun Yao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Jun Bai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Yicheng Chen
- Department of Urology, Sir Run-Run Shaw Hospital, College of Medicine , Zhejiang University , Hangzhou 310016 , China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
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7
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Kang JM, Yoon JK, Oh SJ, Kim BS, Kim SH. Synergistic Therapeutic Effect of Three-Dimensional Stem Cell Clusters and Angiopoietin-1 on Promoting Vascular Regeneration in Ischemic Region. Tissue Eng Part A 2018; 24:616-630. [DOI: 10.1089/ten.tea.2017.0260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Jung-Mi Kang
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
| | - Seong-ja Oh
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea
- Bio-MAX Institute, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Sang-Heon Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
- Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
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8
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García-Moreno MI, Ortega-Caballero F, Rísquez-Cuadro R, Ortiz Mellet C, García Fernández JM. The Impact of Heteromultivalency in Lectin Recognition and Glycosidase Inhibition: An Integrated Mechanistic Study. Chemistry 2017; 23:6295-6304. [PMID: 28240441 DOI: 10.1002/chem.201700470] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 01/06/2023]
Abstract
The vision of multivalency as a strategy limited to achieve affinity enhancements between a protein receptor and its putative sugar ligand (glycotope) has proven too simplistic. On the one hand, binding of a glycotope in a dense glycocalix-like construct to a lectin partner has been shown to be sensitive to the presence of a third sugar entity (heterocluster effect). On the other hand, several carbohydrate processing enzymes (glycosidases and glycosyltransferases) have been found to be also responsive to multivalent presentations of binding partners (multivalent enzyme inhibition), a phenomenon first discovered for iminosugar-type inhibitory species (inhitopes) and recently demonstrated for multivalent carbohydrate constructs. By assessing a series of homo- and heteroclusters combining α-d-glucopyranosyl-related glycotopes and inhitopes, it was shown that multivalency and heteromultivalency govern both kinds of events, allowing for activation, deactivation or enhancement of specific recognition phenomena towards a spectrum of lectin and glycosidase partners in a multimodal manner. This unified scenario originates from the ability of (hetero)multivalent architectures to trigger glycosidase binding modes that are reminiscent of those harnessed by lectins, which should be considered when profiling the biological activity of multivalent architectures.
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Affiliation(s)
- M Isabel García-Moreno
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, c/ Profesor García González 1, 41012, Sevilla, Spain
| | - Fernando Ortega-Caballero
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, c/ Profesor García González 1, 41012, Sevilla, Spain
| | - Rocío Rísquez-Cuadro
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, c/ Profesor García González 1, 41012, Sevilla, Spain
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, c/ Profesor García González 1, 41012, Sevilla, Spain
| | - José M García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC-University of Sevilla, Avda. Americo Vespucio 49, 41092, Sevilla, Spain
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9
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Lepoittevin B, Costa L, Pardoue S, Dragoé D, Mazerat S, Roger P. Hydrophilic PET surfaces by aminolysis and glycopolymer brushes chemistry. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28148] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bénédicte Lepoittevin
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
| | - Ludovic Costa
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
| | - Sylvain Pardoue
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
| | - Diana Dragoé
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
| | - Sandra Mazerat
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
| | - Philippe Roger
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) UMR 8182, Univ Paris Sud, CNRS, Université Paris-Saclay; Orsay 91405 France
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10
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Meng Q, Tao C, Qiu Z, Akaike T, Cui F, Wang X. A hybrid substratum for primary hepatocyte culture that enhances hepatic functionality with low serum dependency. Int J Nanomedicine 2015; 10:2313-23. [PMID: 25848252 PMCID: PMC4376262 DOI: 10.2147/ijn.s75011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Cell culture systems have proven to be crucial for the in vitro maintenance of primary hepatocytes and the preservation of hepatic functional expression at a high level. A poly-(N-p-vinylbenzyl-4-O-β-D-galactopyranosyl-D-gluconamide) matrix can recognize cells and promote liver function in a spheroid structure because of a specific galactose–asialoglycoprotein receptor interaction. Meanwhile, a fusion protein, E-cadherin-Fc, when incubated with various cells, has shown an enhancing effect on cellular viability and metabolism. Therefore, a hybrid substratum was developed for biomedical applications by using both of these materials to combine their advantages for primary hepatocyte cultures. The isolated cells showed a monolayer aggregate morphology on the coimmobilized surface and displayed higher functional expression than cells on traditional matrices. Furthermore, the hybrid system, in which the highest levels of cell adhesion and hepatocellular metabolism were achieved with the addition of 1% fetal bovine serum, showed a lower serum dependency than the collagen/gelatin-coated surface. Accordingly, this substrate may attenuate the negative effects of serum and further contribute to establishing a defined culture system for primary hepatocytes.
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Affiliation(s)
- Qingyuan Meng
- School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China ; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, People's Republic of China ; Biomaterials Center for Regenerative Medical Engineering, Ibaraki, Japan
| | - Chunsheng Tao
- School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China ; The 401 Hospital of Chinese People's Liberation Army, Qingdao, People's Republic of China
| | - Zhiye Qiu
- School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
| | - Toshihiro Akaike
- Biomaterials Center for Regenerative Medical Engineering, Ibaraki, Japan
| | - Fuzhai Cui
- School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
| | - Xiumei Wang
- School of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
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11
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Gevaert E, Billiet T, Declercq H, Dubruel P, Cornelissen R. Galactose-functionalized gelatin hydrogels improve the functionality of encapsulated HepG2 cells. Macromol Biosci 2013; 14:419-27. [PMID: 24821670 DOI: 10.1002/mabi.201300320] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/20/2013] [Indexed: 11/10/2022]
Abstract
The present study investigates the effect of galactosylated gelatin on encapsulated HepG2 cells. Methacrylamide modified gelatin is evaluated and compared with its galactosylated counterpart with respect to effects on viability, morphological characteristics, proliferation, and the expression of hepatocyte specific markers. The research reveals that further modifications of methacrylamide modified gelatin are possible without affecting the survival of the encapsulated cells (viability of 90%). Moreover, the study demonstrates a clear and long-term (up to 21 d) improvement in hepatocyte specific gene expression when the cells are encapsulated in the galactosylated gelatin. It is concluded that the use of galactosylated gelatin derivates supports the hepatocyte phenotype.
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Affiliation(s)
- Elien Gevaert
- Ghent University, Tissue Engineering Group, De Pintelaan 185, Building 6B3, B-9000 Ghent, Belgium
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12
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Rísquez‐Cuadro R, García Fernández JM, Nierengarten J, Ortiz Mellet C. Fullerene‐sp
2
‐Iminosugar Balls as Multimodal Ligands for Lectins and Glycosidases: A Mechanistic Hypothesis for the Inhibitory Multivalent Effect. Chemistry 2013; 19:16791-803. [DOI: 10.1002/chem.201303158] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Indexed: 01/25/2023]
Affiliation(s)
- Rocío Rísquez‐Cuadro
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González 1, 41012 Sevilla (Spain)
| | - José M. García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC ‐ Universidad de Sevilla, Av. Américo Vespucio 49, Isla de la Cartuja, 41092 Sevilla (Spain)
| | - Jean‐François Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg (France)
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González 1, 41012 Sevilla (Spain)
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13
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Chernyy S, Jensen BE, Shimizu K, Ceccato M, Pedersen SU, Zelikin AN, Daasbjerg K, Iruthayaraj J. Surface grafted glycopolymer brushes to enhance selective adhesion of HepG2 cells. J Colloid Interface Sci 2013; 404:207-14. [DOI: 10.1016/j.jcis.2013.04.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/17/2013] [Accepted: 04/18/2013] [Indexed: 10/26/2022]
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14
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Affiliation(s)
- Meng-Xin Hu
- Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Zhejiang University; Hangzhou 310027 China
- School of Food Science and Biotechnology; Zhejiang Gongshang University; Hangzhou 310035 China
| | - Yan Fang
- Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Zhejiang University; Hangzhou 310027 China
| | - Zhi-Kang Xu
- Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Zhejiang University; Hangzhou 310027 China
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15
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Roh H, Yang DH, Chun HJ, Khang G. Cellular behaviour of hepatocyte-like cells from nude mouse bone marrow-derived mesenchymal stem cells on galactosylated poly(D,L-lactic-co-glycolic acid). J Tissue Eng Regen Med 2013; 9:819-25. [PMID: 23784953 DOI: 10.1002/term.1771] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 04/02/2013] [Accepted: 04/16/2013] [Indexed: 11/08/2022]
Abstract
Previously, the galactosylation of poly(d,l-lactic-co-glycolic acid) (PLGA) surface was accomplished by grafting allylamine (AA), using inductively coupled plasma-assisted chemical vapour deposition (ICP-CVD) and conjugating lactobionic acid (LA) with AA via 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide (EDC/NHS) activation for hepatic tissue-engineering purposes. As a continuation study, the cellular behaviour of hepatocyte-like cells (HLCs) on the surface of the galactosylated PLGA were investigated. Nude mouse bone marrow-derived mesenchymal stem cells (MSCs) were cultured under hepatogenic conditions and the differentiated cells were characterized by reverse-transcription polymerase chain reaction (RT-PCR), immunofluorescence and periodic acid-Schiff (PAS) staining. Galactosylated PLGA enhanced the proliferation rate of HLCs compared to the control; HLCs on the surface of the sample became aggregated and formed spheroids after 3 days of culture. A large number of cells on the surface of the sample exhibited increased liver-specific functional activities, such as albumin and urea secretions. In addition, multicellular spheroids in the sample strongly expressed phospholyated focal adhesion kinase (pFAK) (cell-matrix interactions), E-cadherin (cell-cell interactions) and connexin 32 (Cox32; gap junction).
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Affiliation(s)
- Hyun Roh
- Institute of Cell and Tissue Engineering, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea
| | - Dae Hyeok Yang
- Institute of Cell and Tissue Engineering, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea
| | - Heung Jae Chun
- Institute of Cell and Tissue Engineering, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea.,Department of Biomedical Sciences, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea
| | - Gilson Khang
- Department of BIN Fusion Technology, Department of Polymer-Nanoscience and Technology and Polymer BIN Research Centre, Chonbuk National University, Deokjin, Jeonju, Republic of Korea
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16
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Iwasaki Y, Ishihara K. Cell membrane-inspired phospholipid polymers for developing medical devices with excellent biointerfaces. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064101. [PMID: 27877525 PMCID: PMC5099758 DOI: 10.1088/1468-6996/13/6/064101] [Citation(s) in RCA: 207] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 10/18/2012] [Accepted: 09/06/2012] [Indexed: 05/25/2023]
Abstract
This review article describes fundamental aspects of cell membrane-inspired phospholipid polymers and their usefulness in the development of medical devices. Since the early 1990s, polymers composed of 2-methacryloyloxyethyl phosphorylcholine (MPC) units have been considered in the preparation of biomaterials. MPC polymers can provide an artificial cell membrane structure at the surface and serve as excellent biointerfaces between artificial and biological systems. They have also been applied in the surface modification of some medical devices including long-term implantable artificial organs. An MPC polymer biointerface can suppress unfavorable biological reactions such as protein adsorption and cell adhesion - in other words, specific biomolecules immobilized on an MPC polymer surface retain their original functions. MPC polymers are also being increasingly used for creating biointerfaces with artificial cell membrane structures.
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Affiliation(s)
- Yasuhiko Iwasaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564–8680, Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113–8656, Japan
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17
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Idota N, Ebara M, Kotsuchibashi Y, Narain R, Aoyagi T. Novel temperature-responsive polymer brushes with carbohydrate residues facilitate selective adhesion and collection of hepatocytes. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064206. [PMID: 27877533 PMCID: PMC5099766 DOI: 10.1088/1468-6996/13/6/064206] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/17/2012] [Indexed: 05/26/2023]
Abstract
Temperature-responsive glycopolymer brushes were designed to investigate the effects of grafting architectures of the copolymers on the selective adhesion and collection of hypatocytes. Homo, random and block sequences of N-isopropylacrylamide and 2-lactobionamidoethyl methacrylate were grafted on glass substrates via surface-initiated atom transfer radical polymerization. The galactose/lactose-specific lectin RCA120 and HepG2 cells were used to test for specific recognition of the polymer brushes containing galactose residues over the lower critical solution temperatures (LCSTs). RCA120 showed a specific binding to the brush surfaces at 37 °C. These brush surfaces also facilitated the adhesion of HepG2 cells at 37 °C under nonserum conditions, whereas no adhesion was observed for NIH-3T3 fibroblasts. When the temperature was decreased to 25 °C, almost all the HepG2 cells detached from the block copolymer brush, whereas the random copolymer brush did not release the cells. The difference in releasing kinetics of cells from the surfaces with different grafting architectures can be explained by the correlated effects of significant changes in LCST, mobility, hydrophilicity and mechanical properties of the grafted polymer chains. These findings are important for designing 'on-off' cell capture/release substrates for various biomedical applications such as selective cell separation.
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Affiliation(s)
- Naokazu Idota
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Mitsuhiro Ebara
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yohei Kotsuchibashi
- Department of Chemical and Materials Engineering and Alberta Ingenuity Center for Carbohydrate Science, University of Alberta, Edmonton, AB T6G2G6, Canada
| | - Ravin Narain
- Department of Chemical and Materials Engineering and Alberta Ingenuity Center for Carbohydrate Science, University of Alberta, Edmonton, AB T6G2G6, Canada
| | - Takao Aoyagi
- Biomaterials Unit, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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18
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Kang JM, Han M, Park IS, Jung Y, Kim SH, Kim SH. Adhesion and differentiation of adipose-derived stem cells on a substrate with immobilized fibroblast growth factor. Acta Biomater 2012; 8:1759-67. [PMID: 22285427 DOI: 10.1016/j.actbio.2012.01.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 12/28/2011] [Accepted: 01/05/2012] [Indexed: 01/03/2023]
Abstract
Control of cell-matrix interactions plays a role in the regulation of stem cell function. In this study basic fibroblast growth factor (bFGF) linked to maltose-binding protein (MBP) was designed as a matrix for cell adhesion. MBP-FGF was immobilized on polystyrene (PS) surfaces by spontaneous adsorption. The amount of MBP-bFGF immobilized on the PS surface increased with increasing protein concentration, being 158 ng cm(-2) at 10 μg ml(-1) protein. Human adipose-derived stem cell (hASC) adhesion to MBP-bFGF immobilized on a PS surface (PS-MBP-bFGF) was inhibited by heparin. Integrin signaling and cell spreading of hASC on PS-MBP-bFGF were down-regulated compared with those on fibronectin-coated surfaces or tissue culture polystyrene (TCP). hASC differentiated into adipocytes, which stained positive for lipid vacuoles with Oil Red, more readily on PS-MBP-bFGF than on TCP. In contrast, hASC hardly differentiated into osteoblast on PS-MBP-bFGF or on TCP. These results suggest that the mechanism of hASC adhesion to MBP-bFGF immobilized on a PS substrate is mediated by a specific interaction between bFGF and heparin, and that the adhesion mechanism might provide an insight into the design of biomaterials to control the fate of stem cells.
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19
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Li Y, Quan J, Branford-White C, Williams GR, Wu JX, Zhu LM. Electrospun polyacrylonitrile-glycopolymer nanofibrous membranes for enzyme immobilization. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2011.12.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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20
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Vasanthan KS, Subramanian A, Krishnan UM, Sethuraman S. Role of biomaterials, therapeutic molecules and cells for hepatic tissue engineering. Biotechnol Adv 2012; 30:742-52. [PMID: 22265845 DOI: 10.1016/j.biotechadv.2012.01.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 12/28/2011] [Accepted: 01/05/2012] [Indexed: 12/18/2022]
Abstract
Current liver transplantation strategies face severe shortcomings owing to scarcity of donors, immunogenicity, prohibitive costs and poor survival rates. Due to the lengthy list of patients requiring transplant, high mortality rates are observed during the endless waiting period. Tissue engineering could be an alternative strategy to regenerate the damaged liver and improve the survival and quality of life of the patient. The development of an ideal scaffold for liver tissue engineering depends on the nature of the scaffold, its architecture and the presence of growth factors and recognition motifs. Biomimetic scaffolds can simulate the native extracellular matrix for the culture of hepatocytes to enable them to exhibit their functionality both in vitro and in vivo. This review highlights the physiology and pathophysiology of liver, the current treatment strategies, use of various scaffolds, incorporation of adhesion motifs, growth factors and stem cells that can stabilize and maintain hepatocyte cultures for a long period.
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21
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Xia L, Sakban RB, Qu Y, Hong X, Zhang W, Nugraha B, Tong WH, Ananthanarayanan A, Zheng B, Chau IYY, Jia R, McMillian M, Silva J, Dallas S, Yu H. Tethered spheroids as an in vitro hepatocyte model for drug safety screening. Biomaterials 2011; 33:2165-76. [PMID: 22189144 DOI: 10.1016/j.biomaterials.2011.12.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Accepted: 12/02/2011] [Indexed: 12/22/2022]
Abstract
Hepatocyte spheroids mimic many in vivo liver-tissue phenotypes but increase in size during extended culture which limits their application in drug testing applications. We have developed an improved hepatocyte 3D spheroid model, namely tethered spheroids, on RGD and galactose-conjugated membranes using an optimized hybrid ratio of the two bioactive ligands. Cells in the spheroid configuration maintained 3D morphology and uncompromised differentiated hepatocyte functions (urea and albumin production), while the spheroid bottom was firmly tethered to the substratum maintaining the spheroid size in multi-well plates. The oblate shape of the tethered spheroids, with an average height of 32 μm, ensured efficient nutrient, oxygen and drug access to all the cells within the spheroid structure. Cytochrome P450 induction by prototypical inducers was demonstrated in the tethered spheroids and was comparable or better than that observed with hepatocyte sandwich cultures. These data suggested that tethered 3D hepatocyte spheroids may be an excellent alternative to 2D hepatocyte culture models for drug safety applications.
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Affiliation(s)
- Lei Xia
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Drive, Clinical Research Center, #04-25, Singapore 117597, Singapore
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22
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Ambury RF, Merry CLR, Ulijn RV. Sugar functionalised PEGA surfaces support metabolically active hepatocytes. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02874f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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23
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Ivanov AE, Kumar A, Nilsang S, Aguilar MR, Mikhalovska LI, Savina IN, Nilsson L, Scheblykin IG, Kuzimenkova MV, Galaev IY. Evaluation of boronate-containing polymer brushes and gels as substrates for carbohydrate-mediated adhesion and cultivation of animal cells. Colloids Surf B Biointerfaces 2010; 75:510-9. [DOI: 10.1016/j.colsurfb.2009.09.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 08/28/2009] [Accepted: 09/22/2009] [Indexed: 10/20/2022]
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24
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Park IS, Han M, Rhie JW, Kim SH, Jung Y, Kim IH, Kim SH. The correlation between human adipose-derived stem cells differentiation and cell adhesion mechanism. Biomaterials 2009; 30:6835-43. [PMID: 19781767 DOI: 10.1016/j.biomaterials.2009.08.057] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Accepted: 08/28/2009] [Indexed: 11/30/2022]
Abstract
In recent years, research in the areas of stem cells has dramatically increased, including studies of cellular adhesion to a substrate. We sought to determine the adhesive properties of human adipose-derived stem cells (hASCs) for extracellular matrix proteins. The adhesion of hASCs to collagens and laminin was completely inhibited by a monoclonal antibody, Mab 2253, which binds to the beta1 integrin subunit. These data indicate that hASC adhesion to collagens and laminin was exclusively mediated by an integrin. Cell adhesion on fibronectin (Fn) was inhibited by the heparin-binding peptide (HBP) in the presence of Mab 2253, but not by either Mab 2253 or HBP alone. These results indicate that both the beta1 subunit and the heparan sulfate proteoglycan participated in the cell adhesion to Fn. Microscopic views showed extensive spreading of hASCs cultured on Fn, whereas the cells maintained a round shape when cultured on a heparin-binding domain (HBD) substrate. hASCs differentiated into adipocytes, which stained positive for lipid vacuoles by Oil Red-O analysis, more readily on HBD substrate than on FN substrate. These results suggest that hASCs have an adhesion mechanism for the HBD of Fn and hASC morphology is controlled by the adhesion mechanism and strongly correlated with adipogenic differentiation.
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Affiliation(s)
- In-Su Park
- Biomaterial Research Center, Division of Life Sciences, Korea Institute of Science and Technology, 39-1 Hawolgok, Seongbuk, Seoul 136-791, Republic of Korea
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25
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Han M, Park IS, Kim SH, Kim BS, Kim SH. Design and characterization of a maltose binding protein-linked growth factor for matrix engineering. Biotechnol Lett 2009; 31:1677-84. [DOI: 10.1007/s10529-009-0060-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 05/29/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
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26
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Hoshiba T, Wakejima M, Cho CS, Shiota G, Akaike T. Different regulation of hepatocyte behaviors between natural extracellular matrices and synthetic extracellular matrices by hepatocyte growth factor. J Biomed Mater Res A 2008; 85:228-35. [PMID: 17688272 DOI: 10.1002/jbm.a.31571] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The roles of growth factors and extracellular matrices (ECMs) in regulation of hepatocyte behaviors are very important for the establishment of liver-tissue engineering. Especially, collaboration between growth factors and ECMs is a big concern for liver-tissue engineering. In this study, the hepatocyte responses by hepatocyte growth factor (HGF) were compared between natural ECMs and a synthetic galactose-carrying polymer: poly(N-p-vinylbenzyl-4-O-beta-D-galactopyranosyl-D-gluconamide) (PVLA). Hepatocytes underwent proliferation on type I collagen- and fibronectin-coated surfaces in the presence of HGF, whereas hepatocytes formed spheroid on laminin-1-, PVLA-, and poly-L-lysine (PLL)-coated surfaces in the presence of HGF without the activation of proliferation. HGF accelerated ECM deposition, especially laminin-10/11, beneath the hepatocytes cultured on PVLA- and PLL-coated surfaces and the deposited laminin-10/11 activated integrin signaling to collaborate with HGF signaling. Therefore, the deposited ECM molecules should be focused to clear the mechanism of hepatocyte behaviors in the presence of HGF.
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Affiliation(s)
- Takashi Hoshiba
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
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27
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Du Y, Han R, Ng S, Ni J, Sun W, Wohland T, Ong SH, Kuleshova L, Yu H. Identification and Characterization of a Novel Prespheroid 3-Dimensional Hepatocyte Monolayer on Galactosylated Substratum. ACTA ACUST UNITED AC 2007; 13:1455-68. [PMID: 17518743 DOI: 10.1089/ten.2006.0381] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Three-dimensional (3D) hepatocyte spheroids mimicking the structural and functional characteristics of hepatocytes in vivo were self-assembled onto a galactosylated polyethylene terephthalate (PET) substratum, and the dynamic process of spheroid formation was investigated using time-lapse confocal microscopy. Hepatocytes cultured on this galactosylated substratum formed small cell-aggregates within 12 h, which gradually merged into "island-like" clusters at approximately 1 day and spread to form prespheroid monolayer within 2 days; the prespheroid monolayer was stretched to fold into compact and larger 3D spheroids after 3 days. We compared the expressions of F-actin (cytoskeleton), phosphorylated focal adhesion kinase (p-FAK, cell-substratum interactions) and E-cadherin (cell-cell interactions) during the dynamic process of 3D hepatocyte spheroid formation with the dynamic process of 2D hepatocyte monolayer formation on collagen substratum. Hepatocytes in the prespheroid monolayer stage exhibited the strongest cell-substratum interactions of all 4 stages during spheroid formation with cell-cell interactions and F-actin distribution comparable with those of the 3D hepatocyte spheroids. The prespheroid monolayer also exhibited better hepatocyte polarity (multidrug resistance protein 2) and tight junction (zonula occludens-1) formation, more-differentiated hepatocyte functions (albumin production and cytochrome P450 1 A activity), and higher sensitivity to hepatotoxicity than the conventional 2D hepatocyte monolayer. The transient prespheroid 3D monolayer could be stabilized on a hybrid glycine-arginine-glycine-aspartic acid-serine (GRGDS)/galactose-PET substratum for up to 1 week and destabilized to form 3D spheroids in excess soluble GRGDS peptide.
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Affiliation(s)
- Yanan Du
- Institute of Bioengineering and Nanotechnology, Agency for Science, Technology and Research, Singapore
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28
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Kim SH, Akaike T. Epidermal Growth Factor Signaling for Matrix-Dependent Cell Proliferation and Differentiation in Primary Cultured Hepatocytes. ACTA ACUST UNITED AC 2007; 13:601-9. [PMID: 17518606 DOI: 10.1089/ten.2006.0104] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Understanding hepatocellular signaling occurring in biomaterial systems is important for successful hepatic tissue engineering. Toward this end, we employed synthetic glycopolymers, as artificial matrices, to examine integrin-mediated epidermal growth factor (EGF) signaling in primary hepatocyte cultures. We dispersed hepatocytes on a collagen matrix or on a synthetic glycopolymer matrix and subsequently stimulated them with EGF. Only hepatocytes cultured on collagen proliferated, and we observed significant expression of cyclin B1 in these cells. Pharmacological agents, LY294004 (a phosphatidylinositol [PI] 3-kinase inhibitor) and AG1478 (an EGF kinase receptor inhibitor), blocked hepatocyte proliferation and cyclin B1 expression. In addition, EGF-stimulated hepatocytes formed spheroids, exhibited membrane ruffling, and increased tryptophan 2,3-oxygenase (TO) expression when cultured on glycopolymer matrices. Interestingly, PI 3-kinase inhibition suppressed membrane ruffling, spheroid formation, and TO expression. Taken together, this data suggests PI 3-kinase plays an important role in mediating cross talk between integrin and the EGF signaling pathways in primary hepatocyte cultures.
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Affiliation(s)
- Sang-Heon Kim
- Biomaterial Research Center, Korea Institute of Science and Technology, Seoul, Korea
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29
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Il’ina AV, Varlamov VP. Galactosylated derivatives of low-molecular-weight chitosan: Obtaining and properties. APPL BIOCHEM MICRO+ 2007. [DOI: 10.1134/s0003683807010139] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Hoshiba T, Nagahara H, Cho CS, Tagawa YI, Akaike T. Primary hepatocyte survival on non-integrin-recognizable matrices without the activation of Akt signaling. Biomaterials 2006; 28:1093-104. [PMID: 17081603 DOI: 10.1016/j.biomaterials.2006.10.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Accepted: 10/13/2006] [Indexed: 10/24/2022]
Abstract
The suppression of the detachment-induced cell death (anoikis) by the interaction between the cells and extracellular matrix (ECM) is necessary for the application of liver tissue engineering because the disruption of interaction with ECM leads hepatocytes to anoikis. It has been considered, in general, that integrin signal plays an important role in the hepatocyte survival although hepatocytes survive on some types of non-integrin-recognizable matrices, such as poly(N-p-vinylbenzyl-4-O-beta-D-galactopyranosyl-D-gluconamide) (PVLA) and poly-L-lysine (PLL) for several days without the serum. Anoikis was suppressed in the non-adherent culture of hepatocytes isolated from gld/gld mouse, indicating that Fas signal induces hepatocyte anoikis. Fas production is decreased in the adherent culture of hepatocytes on both integrin- and non-integrin-recognizable matrices. Akt activation was hardly observed in the adherent culture of hepatocytes on non-integrin-recognizable matrices whereas the activation occurred in the adherent culture on integrin-recognizable matrices. In the adherent culture of hepatocytes on non-integrin-recognizable matrices, Akt does not contribute to the hepatocyte survival. To prolong the viability of hepatocytes in the adherent culture on PVLA matrix on which hepatocytes maintain their functions for longer period than those on PLL matrix, it might be a good approach to activate Akt signaling pathway.
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Affiliation(s)
- Takashi Hoshiba
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
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31
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Hoshiba T, Cho CS, Murakawa A, Okahata Y, Akaike T. The effect of natural extracellular matrix deposited on synthetic polymers on cultured primary hepatocytes. Biomaterials 2006; 27:4519-28. [PMID: 16697038 DOI: 10.1016/j.biomaterials.2006.04.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Accepted: 04/12/2006] [Indexed: 11/27/2022]
Abstract
It is well known that natural extracellular matrix (ECM) molecules are deposited on the surface of biomaterials during culture of cells and affect cellular behaviors. However, it has not been fully understood what kinds of ECM molecules are deposited on the surface of biomaterials although the cellular behaviors were affected by deposited ECM. In this study, to investigate the effect of deposited natural ECM on behaviors of hepatocytes cultured on biomaterials such as poly (N-p-vinylbenzyl-4-O-beta-D-galactopyranosyl-D-gluconamide) (PVLA) as a hepatocyte-specific matrix and poly (L-lysine) (PLL) as a non-specific one during the culture of hepatocytes in vitro, we investigated expression pattern of ECM genes and adsorption of ECM molecules onto PVLA- and PLL-coated surfaces. It was found that the expression levels of type I collagen and fibronectin genes in the hepatocytes cultured on PVLA-coated surface were different from them in the hepatocytes cultured on PLL-coated one. Also, the results showed that laminin was dominantly deposited on PVLA-coated surface whereas fibronectin was dominantly deposited on PLL-coated one. Hepatocytes maintained liver-specific functions on PVLA- and laminin-coated surfaces. It is thought that deposited laminin during the culture of hepatocytes affects the liver-specific functions of hepatocytes cultured on PVLA-coated surface.
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Affiliation(s)
- Takashi Hoshiba
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
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32
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Lu HF, Chua KN, Zhang PC, Lim WS, Ramakrishna S, Leong KW, Mao HQ. Three-dimensional co-culture of rat hepatocyte spheroids and NIH/3T3 fibroblasts enhances hepatocyte functional maintenance. Acta Biomater 2005; 1:399-410. [PMID: 16701821 DOI: 10.1016/j.actbio.2005.04.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Revised: 04/07/2005] [Accepted: 04/07/2005] [Indexed: 01/20/2023]
Abstract
Functional maintenance of primary hepatocytes in culture can be improved by several distinct approaches involving optimization of the extracellular matrix microenvironment, media composition and cell-cell interactions, both homotypic and heterotypic. Using a galactose-decorated surface, we have developed a method to combine these two approaches by co-culturing rat primary hepatocyte spheroids with NIH/3T3 mouse fibroblast cells. Spheroids were performed by culturing hepatocytes for 3 days on galactosylated poly(vinylidene difluoride) membrane; NIH/3T3 cells were subsequently seeded and co-cultured with the spheroids. Results showed that although NIH/3T3 cells alone responded poorly to the galactosylated PVDF surface and displayed limited attachment, NIH/3T3 fibroblasts attached to the periphery of the hepatocyte spheroids and proliferated around them. Co-cultured hepatocyte spheroids exhibited significantly higher liver-specific functions as compared to spheroids cultured alone. Albumin secretion level in this co-culture system peaked on day 11, which was 1.8- and 2.9-times higher than the peak expression level in spheroid homo-culture control in serum-free (day 3) and serum-containing media (day 4), respectively. The albumin secretion function was maintained for at least two weeks; it was 5.1 (in serum-free medium) and 17.8 (in serum-containing medium) times higher than spheroid homo-culture on day 13. Similarly, the co-culture system also expressed approximately 5.5- and 3.1-times higher 3-methylcholanthrene-induced cytochrome P450 enzymatic activity on day 14 as compared to the homo-culture control in serum-free and serum-containing medium, respectively. In conclusion, this unique co-culture system demonstrated the synergistic roles of homotypic cell-cell interaction, heterotypic cell-cell interaction, cell-substrate interaction and soluble stimuli in hepatocyte functional maintenance.
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Affiliation(s)
- Hong-Fang Lu
- Division of Biomedical Sciences, Johns Hopkins in Singapore, Singapore
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