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Shinohara M, Lau QY, Torizal FG, Choi H, Sakai Y. Inflammatory liver tissue formation using oxygen permeable membrane based culture platform. J Biosci Bioeng 2023; 136:327-333. [PMID: 37573250 DOI: 10.1016/j.jbiosc.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 08/14/2023]
Abstract
During chronic liver injury, inflammation leads to liver fibrosis, particularly due to the activation of hepatic stellate cells (HSCs). The involvement of inflammatory cytokines in HSC activation and the interplay among different liver cells are elaborated. To examine their interactions in vitro, many cultured liver tissue models are performed in organoid or spheroid culture with random 3D structure. Herein, we demonstrated the hierarchical coculture of primary rat hepatocytes with non-parenchymal cells such as the human-derived HSC line (LX-2) and liver sinusoidal endothelial cell line (TMNK-1). The cocultured tissue had high usability with simple operation of separating solid and liquid phases with improved liver functions such as albumin production and hepatic cytochrome P450 3A4 activity. We also studied the effects of stimulation by both oxygen tension and the key pro-fibrogenic cytokine, transforming growth factor beta (TGF-β), on HSC activation. Gene expression of collagen type I and alpha-smooth muscle actin were enhanced in the hierarchical coculture under lower oxygen tension and TGF-β1 stimulation. Therefore, this hierarchical in vitro cocultured liver tissue could provide a useful platform as a disease model for elucidating the interactions of various liver cell types and biochemical signals in future liver fibrogenesis studies.
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Affiliation(s)
- Marie Shinohara
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
| | - Qiao You Lau
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Fuad Gandhi Torizal
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hyunjin Choi
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yasuyuki Sakai
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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2
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Eom S, Lee SY, Park JT, Choi I. Alveoli-Like Multifunctional Scaffolds for Optical and Electrochemical In Situ Monitoring of Cellular Responses from Type II Pneumocytes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2301395. [PMID: 37246281 PMCID: PMC10427368 DOI: 10.1002/advs.202301395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/28/2023] [Indexed: 05/30/2023]
Abstract
While breathing, alveoli are exposed to external irritants, which contribute to the pathogenesis of lung disease. Therefore, in situ monitoring of alveolar responses to stimuli of toxicants under in vivo environments is important to understand lung disease. For this purpose, 3D cell cultures are recently employed for examining cellular responses of pulmonary systems exposed to irritants; however, most of them have used ex situ assays requiring cell lysis and fluorescent labeling. Here, an alveoli-like multifunctional scaffold is demonstrated for optical and electrochemical monitoring of cellular responses of pneumocytes. Porous foam with dimensions like the alveoli structure is used as a backbone for the scaffold, wherein electroactive metal-organic framework crystals, optically active gold nanoparticles, and biocompatible hyaluronic acid are integrated. The fabricated multifunctional scaffold allows for label-free detection and real-time monitoring of oxidative stress released in pneumocytes under toxic-conditions via redox-active amperometry and nanospectroscopy. Moreover, cellular behavior can be statistically classified based on fingerprint Raman signals collected from the cells on the scaffold. The developed scaffold is expected to serve as a promising platform to investigate cellular responses and disease pathogenesis, owing to its versatility in monitoring electrical and optical signals from cells in situ in the 3D microenvironments.
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Affiliation(s)
- Seonghyeon Eom
- Department of Life ScienceUniversity of SeoulSeoul02504Republic of Korea
| | - So Yeon Lee
- Department of Chemical EngineeringKonkuk UniversitySeoul05029Republic of Korea
| | - Jung Tae Park
- Department of Chemical EngineeringKonkuk UniversitySeoul05029Republic of Korea
| | - Inhee Choi
- Department of Life ScienceUniversity of SeoulSeoul02504Republic of Korea
- Department of Applied ChemistryUniversity of SeoulSeoul02504Republic of Korea
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3
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Lv W, Zhou H, Aazmi A, Yu M, Xu X, Yang H, Huang YYS, Ma L. Constructing biomimetic liver models through biomaterials and vasculature engineering. Regen Biomater 2022; 9:rbac079. [PMID: 36338176 PMCID: PMC9629974 DOI: 10.1093/rb/rbac079] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/19/2022] [Accepted: 10/08/2022] [Indexed: 04/04/2024] Open
Abstract
The occurrence of various liver diseases can lead to organ failure of the liver, which is one of the leading causes of mortality worldwide. Liver tissue engineering see the potential for replacing liver transplantation and drug toxicity studies facing donor shortages. The basic elements in liver tissue engineering are cells and biomaterials. Both mature hepatocytes and differentiated stem cells can be used as the main source of cells to construct spheroids and organoids, achieving improved cell function. To mimic the extracellular matrix (ECM) environment, biomaterials need to be biocompatible and bioactive, which also help support cell proliferation and differentiation and allow ECM deposition and vascularized structures formation. In addition, advanced manufacturing approaches are required to construct the extracellular microenvironment, and it has been proved that the structured three-dimensional culture system can help to improve the activity of hepatocytes and the characterization of specific proteins. In summary, we review biomaterials for liver tissue engineering, including natural hydrogels and synthetic polymers, and advanced processing techniques for building vascularized microenvironments, including bioassembly, bioprinting and microfluidic methods. We then summarize the application fields including transplant and regeneration, disease models and drug cytotoxicity analysis. In the end, we put the challenges and prospects of vascularized liver tissue engineering.
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Affiliation(s)
- Weikang Lv
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China
| | - Hongzhao Zhou
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China
| | - Abdellah Aazmi
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China
| | - Mengfei Yu
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Xiaobin Xu
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Huayong Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China
| | | | - Liang Ma
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310058, China
- School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China
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4
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Hu XB, Liu YL, Wang WJ, Zhang HW, Qin Y, Guo S, Zhang XW, Fu L, Huang WH. Biomimetic Graphene-Based 3D Scaffold for Long-Term Cell Culture and Real-Time Electrochemical Monitoring. Anal Chem 2018; 90:1136-1141. [DOI: 10.1021/acs.analchem.7b03324] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Xue-Bo Hu
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yan-Ling Liu
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wen-Jie Wang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hai-Wei Zhang
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yu Qin
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Shan Guo
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xin-Wei Zhang
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lei Fu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wei-Hua Huang
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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Gómez Villalobos MDJ, Vidrio S, Giles López R, Flores Gómez G, Chagoya de Sánchez V. A novel Golgi-Cox staining method for detecting and characterizing roles of the hepatic stellate cells in liver injury. PATHOPHYSIOLOGY 2017; 24:267-274. [DOI: 10.1016/j.pathophys.2017.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 06/13/2017] [Accepted: 06/28/2017] [Indexed: 12/19/2022] Open
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Mazza G, Al-Akkad W, Rombouts K. Engineering in vitro models of hepatofibrogenesis. Adv Drug Deliv Rev 2017; 121:147-157. [PMID: 28578016 DOI: 10.1016/j.addr.2017.05.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/17/2017] [Accepted: 05/26/2017] [Indexed: 02/07/2023]
Abstract
Chronic liver disease is a major cause of morbidity and mortality worldwide marked by chronic inflammation and fibrosis/scarring, resulting in end-stage liver disease and its complications. Hepatic stellate cells (HSCs) are a dominant contributor to liver fibrosis by producing excessive extracellular matrix (ECM), irrespective of the underlying disease aetiologies, and for many decades research has focused on the development of a number of anti-fibrotic strategies targeting this cell. Despite major improvements in two-dimensional systems (2D) by using a variety of cell culture models of different complexity, an efficient anti-fibrogenic therapy has yet to be developed. The development of well-defined three-dimensional (3D) in vitro models, which mimic ECM structures as found in vivo, have demonstrated the importance of cell-matrix bio-mechanics, the complex interactions between HSCs and hepatocytes and other non-parenchymal cells, and this to improve and promote liver cell-specific functions. Henceforth, refinement of these 3D in vitro models, which reproduce the liver microenvironment, will lead to new objectives and to a possible new era in the search for antifibrogenic compounds.
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7
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The stellate cell system (vitamin A-storing cell system). Anat Sci Int 2017; 92:387-455. [PMID: 28299597 DOI: 10.1007/s12565-017-0395-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/15/2017] [Indexed: 01/18/2023]
Abstract
Past, present, and future research into hepatic stellate cells (HSCs, also called vitamin A-storing cells, lipocytes, interstitial cells, fat-storing cells, or Ito cells) are summarized and discussed in this review. Kupffer discovered black-stained cells in the liver using the gold chloride method and named them stellate cells (Sternzellen in German) in 1876. Wake rediscovered the cells in 1971 using the same gold chloride method and various modern histological techniques including electron microscopy. Between their discovery and rediscovery, HSCs disappeared from the research history. Their identification, the establishment of cell isolation and culture methods, and the development of cellular and molecular biological techniques promoted HSC research after their rediscovery. In mammals, HSCs exist in the space between liver parenchymal cells (PCs) or hepatocytes and liver sinusoidal endothelial cells (LSECs) of the hepatic lobule, and store 50-80% of all vitamin A in the body as retinyl ester in lipid droplets in the cytoplasm. SCs also exist in extrahepatic organs such as pancreas, lung, and kidney. Hepatic (HSCs) and extrahepatic stellate cells (EHSCs) form the stellate cell (SC) system or SC family; the main storage site of vitamin A in the body is HSCs in the liver. In pathological conditions such as liver fibrosis, HSCs lose vitamin A, and synthesize a large amount of extracellular matrix (ECM) components including collagen, proteoglycan, glycosaminoglycan, and adhesive glycoproteins. The morphology of these cells also changes from the star-shaped HSCs to that of fibroblasts or myofibroblasts.
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Appert-Collin A, Bennasroune A, Jeannesson P, Terryn C, Fuhrmann G, Morjani H, Dedieu S. Role of LRP-1 in cancer cell migration in 3-dimensional collagen matrix. Cell Adh Migr 2016; 11:316-326. [PMID: 27463962 DOI: 10.1080/19336918.2016.1215788] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The low-density lipoprotein receptor-related protein-1 (LRP-1) is a member of Low Density Lipoprotein Receptor (LDLR) family, which is ubiquitously expressed and which is described as a multifunctional endocytic receptor which mediates the clearance of various extracellular matrix molecules including serine proteinases, proteinase-inhibitor complexes, and matricellular proteins. Several studies showed that high LRP-1 expression promotes breast cancer cell invasiveness, and LRP-1 invalidation leads to cell motility abrogation in both tumor and non-tumor cells. Furthermore, our group has reported that LRP-1 silencing prevents the invasion of a follicular thyroid carcinoma despite increased pericellular proteolytic activities from MMP2 and uPA using a 2D-cell culture model. As the use of 3D culture systems is becoming more and more popular due to their promise as enhanced models of tissue physiology, the aim of the present work is to characterize for the first time how the 3D collagen type I matrix may impact the ability of LRP-1 to regulate the migratory properties of thyroid carcinoma using as a model FTC-133 cells. Our results show that inhibition of LRP-1 activity or expression leads to morphological changes affecting cell-matrix interactions, reorganizations of the actin-cytoskeleton especially by inhibiting FAK activation and increasing RhoA activity and MLC-2 phosphorylation, thus preventing cell migration. Taken together, our results suggest that LRP-1 silencing leads to a decrease of cell migratory capacity in a 3D configuration.
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Affiliation(s)
- Aline Appert-Collin
- a Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche Sciences Exactes et Naturelles , Reims , France
| | - Amar Bennasroune
- a Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche Sciences Exactes et Naturelles , Reims , France.,b UMR CNRS 7360, LIEC, Université de Lorraine , Metz , France
| | - Pierre Jeannesson
- c Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Faculté de Pharmacie , Reims , France
| | - Christine Terryn
- d Plateforme d'Imagerie Cellulaire et Tissulaire, URCA , Reims , France
| | - Guy Fuhrmann
- e UMR 7213 CNRS, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie , Illkirch , France
| | - Hamid Morjani
- c Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Faculté de Pharmacie , Reims , France
| | - Stéphane Dedieu
- a Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche Sciences Exactes et Naturelles , Reims , France
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9
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Kodai S, Takemura S, Kubo S, Azuma H, Minamiyama Y. Therapeutic administration of an ingredient of aged-garlic extracts, S-allyl cysteine resolves liver fibrosis established by carbon tetrachloride in rats. J Clin Biochem Nutr 2015; 56:179-85. [PMID: 26060347 PMCID: PMC4454081 DOI: 10.3164/jcbn.14-108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/13/2014] [Indexed: 12/15/2022] Open
Abstract
S-allyl cysteine (SAC) is the most abundant compound in aged garlic extracts (AGEs). AGE has been reported to ameliorate the oxidative damage implicated in a variety of diseases. However, the effects of SAC have not been established in liver cirrhosis. The aim of this study was to examine the effect of therapeutic administration of SAC in liver cirrhosis by chronic carbon tetrachloride (CCl4) administration in rats. SAC or other cysteine compounds were administered from 4 weeks when liver fibrosis was confirmed to be in process. CCl4 administration elevated plasma alanine aminotransferase, plasma lipid peroxidation, liver hydroxyproline, and liver transforming growth factor (TGF)-β at 12 weeks. SAC prevented these changes induced by CCl4. Furthermore, SAC improved survival in a dose-dependent manner following consecutive CCl4 administration. The inhibitory mechanisms may be associated with a decrease in the profibrogenic cytokine, TGF-β as well as the antioxidative properties of SAC.
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Affiliation(s)
- Shintaro Kodai
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, Abeno-ku, Osaka 545-8585, Japan
| | - Shigekazu Takemura
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, Abeno-ku, Osaka 545-8585, Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, Abeno-ku, Osaka 545-8585, Japan
| | - Hideki Azuma
- Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yukiko Minamiyama
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University, Abeno-ku, Osaka 545-8585, Japan ; Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto 602-8522, Japan
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10
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Almeida L, Oliveira J, Guimarães LH, Carvalho EM, Blackwell JM, Castellucci L. Wound healing genes and susceptibility to cutaneous leishmaniasis in Brazil: role of COL1A1. INFECTION GENETICS AND EVOLUTION 2015; 30:225-229. [PMID: 25562121 DOI: 10.1016/j.meegid.2014.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/22/2014] [Accepted: 12/27/2014] [Indexed: 02/06/2023]
Abstract
Previous studies have demonstrated a role for wound healing genes in resolution of cutaneous lesions caused by Leishmania spp. in both mice and humans, including the gene FLI1 encoding Friend leukemia virus integration 1. Reduction of Fli1 expression in mice has been shown to result in up-regulation of collagen type I alpha 1 (Col1a1) and alpha 2 (Col1a2) genes and, conversely, in down-regulation of the matrix metalloproteinase 1 (Mmp1) gene, suggesting that Fli1 suppression is involved in activation of the profibrotic gene program. Here we examined single nucleotide polymorphisms (SNPs) in these genes as risk factors for cutaneous (CL) and mucosal leishmaniasis (ML), and leishmaniasis per se, caused by L. braziliensis in humans. SNPs were genotyped in 168 nuclear families (250 CL; 87 ML cases) and replicated in 157 families (402 CL; 39 ML cases). Family-based association tests (FBAT) showed the strongest association between SNPs rs1061237 (combined P=0.002) and rs2586488 (combined P=0.027) at COL1A1 and CL disease. This contributes to our further understanding of the role of wound healing in the resolution of CL disease, providing potential for therapies modulating COL1A1 via drugs acting on FLI1.
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Affiliation(s)
- Lucas Almeida
- National Institute of Science and Technology in Tropical Diseases, Brazil and Federal University of Bahia, Salvador, Brazil.
| | - Joyce Oliveira
- National Institute of Science and Technology in Tropical Diseases, Brazil and Federal University of Bahia, Salvador, Brazil.
| | - Luiz Henrique Guimarães
- National Institute of Science and Technology in Tropical Diseases, Brazil and Federal University of Bahia, Salvador, Brazil.
| | - Edgar M Carvalho
- National Institute of Science and Technology in Tropical Diseases, Brazil and Federal University of Bahia, Salvador, Brazil.
| | - Jenefer M Blackwell
- Telethon Kids Institute, The University of Western Australia, Subiaco, Western Australia, Australia; Cambridge Institute for Medical Research and Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK.
| | - Léa Castellucci
- National Institute of Science and Technology in Tropical Diseases, Brazil and Federal University of Bahia, Salvador, Brazil.
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11
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Bittnerová L, Jiroutová A, Rudolf E, Rezácová M, Kanta J. Effect of collagen I gel on apoptosis of rat hepatic stellate cells. ACTA MEDICA (HRADEC KRÁLOVÉ) 2013; 56:73-9. [PMID: 24069661 DOI: 10.14712/18059694.2014.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Activated hepatic stellate cells (HSC) are a major source offibrous proteins in cirrhotic liver. Inducing or accelerating their apoptosis is a potential way of liver fibrosis treatment. Extracellular matrix (ECM) surrounding cells in tissue affects their differentiation, migration, proliferation and function. Type I collagen is the main ECM component in fibrotic liver. We have examined how this protein modifies apoptosis of normal rat HSC induced by gliotoxin, cycloheximide and cytochalasin D in vitro and spontaneous apoptosis of HSC isolated from CCl4-damaged liver. We have found that type I collagen gel enhances HSC apoptosis regardless of the agent triggering this process.
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Affiliation(s)
- Lenka Bittnerová
- Department of Medical Biochemistry, Charles University in Prague, Faculty of Medicine, Hradec Králové, Czech Republic
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12
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Thompson KJ, McKillop IH, Schrum LW. Targeting collagen expression in alcoholic liver disease. World J Gastroenterol 2011; 17:2473-81. [PMID: 21633652 PMCID: PMC3103805 DOI: 10.3748/wjg.v17.i20.2473] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 04/17/2011] [Accepted: 04/24/2011] [Indexed: 02/06/2023] Open
Abstract
Alcoholic liver disease (ALD) is a leading cause of liver disease and liver-related deaths globally, particularly in developed nations. Liver fibrosis is a consequence of ALD and other chronic liver insults, which can progress to cirrhosis and hepatocellular carcinoma if left untreated. Liver fibrosis is characterized by accumulation of excess extracellular matrix components, including type I collagen, which disrupts liver microcirculation and leads to injury. To date, there is no therapy for the treatment of liver fibrosis; thus treatments that either prevent the accumulation of type I collagen or hasten its degradation are desirable. The focus of this review is to examine the regulation of type I collagen in fibrogenic cells of the liver and to discuss current advances in therapeutics to eliminate excessive collagen deposition.
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13
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Hepatic stellate cell (vitamin A-storing cell) and its relative--past, present and future. Cell Biol Int 2011; 34:1247-72. [PMID: 21067523 DOI: 10.1042/cbi20100321] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
HSCs (hepatic stellate cells) (also called vitamin A-storing cells, lipocytes, interstitial cells, fat-storing cells or Ito cells) exist in the space between parenchymal cells and liver sinusoidal endothelial cells of the hepatic lobule and store 50-80% of vitamin A in the whole body as retinyl palmitate in lipid droplets in the cytoplasm. In physiological conditions, these cells play pivotal roles in the regulation of vitamin A homoeostasis. In pathological conditions, such as hepatic fibrosis or liver cirrhosis, HSCs lose vitamin A and synthesize a large amount of extracellular matrix components including collagen, proteoglycan, glycosaminoglycan and adhesive glycoproteins. Morphology of these cells also changes from the star-shaped SCs (stellate cells) to that of fibroblasts or myofibroblasts. The hepatic SCs are now considered to be targets of therapy of hepatic fibrosis or liver cirrhosis. HSCs are activated by adhering to the parenchymal cells and lose stored vitamin A during hepatic regeneration. Vitamin A-storing cells exist in extrahepatic organs such as the pancreas, lungs, kidneys and intestines. Vitamin A-storing cells in the liver and extrahepatic organs form a cellular system. The research of the vitamin A-storing cells has developed and expanded vigorously. The past, present and future of the research of the vitamin A-storing cells (SCs) will be summarized and discussed in this review.
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14
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Tare RS, Khan F, Tourniaire G, Morgan SM, Bradley M, Oreffo ROC. A microarray approach to the identification of polyurethanes for the isolation of human skeletal progenitor cells and augmentation of skeletal cell growth. Biomaterials 2008; 30:1045-55. [PMID: 19022500 DOI: 10.1016/j.biomaterials.2008.10.038] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Accepted: 10/22/2008] [Indexed: 01/14/2023]
Abstract
The present study has examined the efficacy of a polymer microarray platform to screen a library of polyurethanes for applications such as human skeletal progenitor cell isolation and surface modification of tissue engineering scaffolds to enhance skeletal cell growth and differentiation. Analysis of polyurethane microarrays incubated with adult human bone marrow-derived STRO-1+ skeletal progenitor cells identified 31 polyurethanes (from the entire library of 120 polyurethanes) capable of binding to the STRO-1+ cells. Four polyurethanes (out of the 31 identified in the previous screen) were able to selectively immobilise cells of the STRO-1+ fraction from the heterogeneous human bone marrow mononuclear cell population. These four polyurethanes were highly selective for the STRO-1+ fraction of human bone marrow as they failed to bind STRO-1+ immature osteoblast-like MG63 cells, the STRO-1+ fraction of human fetal skeletal cells and differentiated osteoblast-like SaOs cells. Culture of human bone marrow-derived STRO-1+ cells on fibres of Polyglycolic acid (PGA) fleece surface modified by polyurethane adsorption, in osteogenic conditions, enhanced the expression of early osteogenic genes. Similarly, surface modification of PGA fleece fibres by polyurethane adsorption increased the responsiveness of MG63 cells, cultured on this scaffold, to 1,25 dihydroxy Vitamin D3, as demonstrated by enhanced Osteocalcin expression.
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Affiliation(s)
- Rahul S Tare
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Institute of Developmental Sciences, University of Southampton, Southampton SO16 6YD, UK
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Bildt MM, Bloemen M, Kuijpers-Jagtman AM, Von den Hoff JW. Matrix metalloproteinase inhibitors reduce collagen gel contraction and alpha-smooth muscle actin expression by periodontal ligament cells. J Periodontal Res 2008; 44:266-74. [PMID: 18973523 DOI: 10.1111/j.1600-0765.2008.01127.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND AND OBJECTIVE Orthodontic tooth movement requires remodeling of the periodontal tissues. The matrix metalloproteinases (MMPs) degrade the extracellular matrix components of the periodontal ligament, while the tissue inhibitors of metalloproteinases (TIMPs) control their activity. Synthetic MMP inhibitors have been developed to inhibit MMP activity. In this study, periodontal ligament cells in contracting collagen gels served as a model for enhanced periodontal remodeling. The effect of MMP inhibitors on gel contraction and on MMP and TIMP expression was analyzed. MATERIAL AND METHODS Human periodontal ligament cells were cultured in three-dimensional collagen gels and incubated with the MMP inhibitors BB94, CMT-3, doxycycline and Ilomastat. Gel contraction was determined using consecutive photographs. The relative amounts of MMPs and TIMPs were analyzed using substrate zymography and mRNA expression using quantitative polyermase chain reaction. RESULTS All MMP inhibitors reduced MMP activity to about 20% of the control activity. They all reduced contraction, but CMT-3 and doxycycline had the strongest effect. These inhibitors also reduced MMP-2, MMP-3 and alpha-smooth muscle actin mRNA expression. The expression of MMP-1 mRNA seemed to be increased by CMT-3. No effects were found on the amounts of MMPs and TIMPs. CONCLUSION Synthetic MMP inhibitors strongly reduced gel contraction by periodontal ligament cells. This was primarily caused by an inhibitory effect on MMP activity, which reduces matrix remodeling. In addition, alpha-smooth muscle actin expression was reduced by CMT-3 and doxycycline, which limits the contractile activity of the fibroblasts.
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Affiliation(s)
- M M Bildt
- Orthodontics & Oral Biology, Radboud University Nijmegen Medical Centre, Philips van Leydenlaan 25, Nijmegen, The Netherlands
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16
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Bourd-Boittin K, Le Pabic H, Bonnier D, L'Helgoualc'h A, Théret N. RACK1, a new ADAM12 interacting protein. Contribution to liver fibrogenesis. J Biol Chem 2008; 283:26000-9. [PMID: 18621736 PMCID: PMC3258856 DOI: 10.1074/jbc.m709829200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Revised: 06/30/2008] [Indexed: 11/06/2022] Open
Abstract
ADAM12 belongs to a disintegrin-like and metalloproteinase-containing protein family that possesses multidomain structures composed of a pro-domain, a metalloprotease, disintegrin-like, cysteine-rich, epidermal growth factor-like, and transmembrane domains, and a cytoplasmic tail. Overexpression of several ADAMs has been reported in human cancer, and we recently described the involvement of ADAM12 in liver injury (Le Pabic, H., Bonnier, D., Wewer, U. M., Coutand, A., Musso, O., Baffet, G., Clement, B., and Theret, N. (2003) Hepatology 37, 1056-1066). In this study, we used a yeast two-hybrid screening of a cDNA library from human hepatocellular carcinoma to analyze binding partners of ADAM12. We identify RACK1, a receptor for activated protein kinase C (PKC), as a new ADAM12 interacting protein. RACK1 is up-regulated in patients with hepatocellular carcinoma and is highly expressed by activated hepatic stellate cells. We demonstrate the involvement of RACK1 in mediating the PKC-dependent translocation of ADAM12 to membranes of activated hepatic stellate cells. In particular, treatment of cells with phorbol esters enhances ADAM12 immunostaining in the membrane fractions and the co-immunoprecipitation of ternary complexes containing RACK1, ADAM12, and PKC. By using RNA interference, we demonstrate that inhibition of RACK1 expression diminishes the phorbol 12-myristate 13-acetate-dependent translocation of ADAM12 to membranes of hepatic stellate cells. Finally, hepatic stellate cells cultured on coated type I collagen induces relocalization of ADAM12 in the membrane, suggesting that this major matrix component in liver cancer and fibrogenesis might stimulate ADAM12 translocation to the cell membrane where its shedding activity takes place.
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Affiliation(s)
| | | | | | | | - Nathalie Théret
- INSERM U620, IFR140, University of Rennes 1, 35000 Rennes, France
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17
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Van de Bovenkamp M, Groothuis GMM, Meijer DKF, Olinga P. Liver fibrosis in vitro: Cell culture models and precision-cut liver slices. Toxicol In Vitro 2007; 21:545-57. [PMID: 17289342 DOI: 10.1016/j.tiv.2006.12.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2006] [Revised: 12/07/2006] [Accepted: 12/18/2006] [Indexed: 01/27/2023]
Abstract
Chronic liver injury of various etiologies can cause liver fibrosis, which is characterized by the progressive accumulation of connective tissue in the liver. As no effective treatment for liver fibrosis is available yet, extensive research is ongoing to further study the mechanisms underlying the development of disease- or toxicity-induced liver fibrosis and to identify potential pro- or anti-fibrotic properties of compounds. This review gives an overview of the in vitro methods that are currently available for this purpose. The first focus is on cell culture models, since the majority of in vitro research uses these systems. Both primary cells and cell lines as well as the use of different culture matrices and co-culture models are discussed. Second, the use of precision-cut liver slices, which recently came into attention as in vitro model for the study of fibrosis, is discussed. The overview clearly shows that continuous optimization and adaptation have extended the potential of in vitro models for liver fibrosis during the past years. By combining the use of the different cell and tissue culture models, the mechanisms underlying multicellular fibrosis development can be studied in vitro and potential pro- or anti-fibrotic properties of compounds can be identified both on single liver cell types and in human liver tissue.
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Affiliation(s)
- M Van de Bovenkamp
- Department of Pharmacokinetics and Drug Delivery, University Center for Pharmacy, Groningen, The Netherlands
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18
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Abstract
Hepatic stellate cells (HSCs; also called as vitamin A-storing cells, lipocytes, interstitial cells, fat-storing cells, Ito cells) exist in the space between parenchymal cells and sinusoidal endothelial cells of the hepatic lobule, and store 80% of vitamin A in the whole body as retinyl palmitate in lipid droplets in the cytoplasm. In physiological conditions, these cells play pivotal roles in the regulation of vitamin A homeostasis; they express specific receptors for retinol-binding protein (RBP), a binding protein specific for retinol, on their cell surface, and take up the complex of retinol and RBP by receptor-mediated endocytosis. HSCs in Arctic animals such as polar bears and Arctic foxes store 20-100 times the levels of vitamin A found in human or rat. HSCs play an important role in the liver regeneration. A gradient of vitamin A-storage capacity exists among the SCs in a hepatic lobule. The gradient was expressed as a symmetrical biphasic distribution starting at the periportal zone, peaking at the middle zone, and sloping down toward the central zone in the hepatic lobule. In pathological conditions such as liver fibrosis, HSCs lose vitamin A and synthesize a large amount of extracellular matrix (ECM) components including collagen, proteoglycan, and adhesive glycoproteins. Morphology of these cells also changes from the star-shaped SCs to that of fibroblasts or myofibroblasts. The three-dimensional structure of ECM components was found to regulate reversibly the morphology, proliferation, and functions of the HSCs. Molecular mechanisms in the reversible regulation of the SCs by ECM imply cell surface integrin-binding to ECM components followed by signal transduction processes and then cytoskeleton assembly. SCs also exist in extrahepatic organs such as pancreas, lung, kidney, and intestine. Hepatic and extrahepatic SCs form the SC system.
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Affiliation(s)
- Haruki Senoo
- Department of Cell Biology and Histology, Akita University School of Medicine 1-1-1 Hondo, Akita 010-8543, Japan
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19
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Mant A, Tourniaire G, Diaz-Mochon JJ, Elliott TJ, Williams AP, Bradley M. Polymer microarrays: identification of substrates for phagocytosis assays. Biomaterials 2006; 27:5299-306. [PMID: 16808972 DOI: 10.1016/j.biomaterials.2006.04.040] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Accepted: 04/28/2006] [Indexed: 11/19/2022]
Abstract
A polymer microarray of 120 polyurethanes was used to identify polymers that promoted the adhesion of bone marrow dendritic cells (BMDC). Identified polymers were coated onto glass cover slips and shown to be efficient substrates for the immobilisation of these primary cells, which underwent efficient phagocytosis while still presumably maintaining their immature state.
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Affiliation(s)
- Alexandra Mant
- School of Medicine, University of Southampton, Mail Point 824, Southampton General Hospital, Southampton, Hants SO16 6YD, UK
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20
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Gross-Steinmeyer K, Stapleton PL, Tracy JH, Bammler TK, Lehman T, Strom SC, Eaton DL. Influence of Matrigel-overlay on constitutive and inducible expression of nine genes encoding drug-metabolizing enzymes in primary human hepatocytes. Xenobiotica 2005; 35:419-38. [PMID: 16012075 DOI: 10.1080/00498250500137427] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
1. Previous studies reported that rat hepatocytes overlaid with extracellular matrix components (Matrigel) maintain the expression and responsiveness of drug-metabolizing enzymes. However, whether Matrigel provides similar advantages in human hepatocytes remains largely uncertain.2. The influence of Matrigel-overlay on the constitutive and phenobarbital- and oltipraz-inducible expression of nine biotransformation enzymes, cytochrome P450s 1A1, 1A2, 2B6, 3A4, and glutathione S-transferases A1, A2, M1, T1, P1, in primary human hepatocytes was evaluated.3. Hepatocytes from five livers were maintained on a rigid collagen substratum with or without Matrigel overlay and treated for 48?h with two doses of each inducer. Quantitative RT-PCR, and for selected genes, immunoblot and enzyme activity analyses, demonstrated that human hepatocytes overlaid with Matrigel showed consistently higher constitutive and inducible expression of biotransformation genes. 4. Phenobarbital-mediated responsiveness of cytochrome P450 2B6, a potential indicator of hepatocyte differentiation status, was markedly higher in overlaid relative to non-overlaid hepatocytes. 5. It is concluded that an Matrigel overlay facilitates the maintenance and induction of xenobiotic metabolizing enzymes in primary cultures of human hepatocytes.
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Affiliation(s)
- K Gross-Steinmeyer
- Department of Environmental and Occupational Health Sciences, Center for Ecogenetics & Environmental Health, University of Washington, Seattle, WA 98105, USA
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21
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Higashi N, Sato M, Kojima N, Irie T, Kawamura K, Mabuchi A, Senoo H. Vitamin A storage in hepatic stellate cells in the regenerating rat liver: With special reference to zonal heterogeneity. ACTA ACUST UNITED AC 2005; 286:899-907. [PMID: 16086432 DOI: 10.1002/ar.a.20230] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Under physiological conditions, hepatic stellate cells (HSCs) within liver lobules store about 80% of the total body vitamin A in lipid droplets in their cytoplasm, and these cells show zonal heterogeneity in terms of vitamin A-storing capacity. Vitamin A is essential for the growth and differentiation of cells, and it is well known that liver cells including HSCs show a remarkable growth capacity after partial hepatectomy (PHx). However, the status of vitamin A storage in HSCs in the liver regeneration is not yet known. Therefore, we conducted the present study to examine vitamin A storage in these cells during liver regeneration. Morphometry at the electron microscopic level, fluorescence microscopy for vitamin A autofluorescence, and immunofluorescence microscopy for desmin and alpha-smooth muscle actin (alpha-SMA) were performed on sections of liver from male Wistar strain rats at various times after the animal had been subjected to 70% PHx. The mean area of vitamin A-storing lipid droplets per HSC gradually decreased toward 3 days after PHx, and then returned to normal within 14 days after it. However, the heterogeneity of vitamin A-storing lipid droplet area per HSC within the hepatic lobule disappeared after PHx and did not return to normal by 14 days thereafter, even though the liver volume had returned to normal. These results suggest that HSCs alter their vitamin A-storing capacity during liver regeneration and that the recovery of vitamin A homeostasis requires a much longer time than that for liver volume.
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Affiliation(s)
- Nobuyo Higashi
- Department of Cell Biology and Histology, Akita University School of Medicine, Akita, Japan
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22
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Cho MK, Suh SH, Lee CH, Kim SG. Bovine type I collagen inhibits Raw264.7 cell proliferation through phosphoinositide 3-kinase- and mitogen-activated protein kinase-dependent down-regulation of cyclins D1, A and B1. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2004; 1744:47-57. [PMID: 15878397 DOI: 10.1016/j.bbamcr.2004.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2004] [Revised: 10/09/2004] [Accepted: 11/09/2004] [Indexed: 11/22/2022]
Abstract
Bovine type I collagen (BIC), which is widely used as a fibrous extracellular matrix component in cell culture models, inhibits the progression of melanoma cell cycle via p27 up-regulation. BIC also induces nitric oxide synthase in macrophages through JunB/AP-1 and NF-kappaB activation. Given the previous observations, this study investigates the effect of BIC on the cell cycle progression and regulatory function of Raw264.7 macrophage cells and the responsible signaling pathways. Cell cycle analysis revealed that BIC completely suppressed proliferation of Raw264.7 cells with inhibition of the percentage of cells in the S phase and the reciprocal decrease in the G0/G1 phase. DNA synthesis was also inhibited by BIC, as evidenced by a decrease in the cellular incorporation of [3H]thymidine. The G1/S arrest induced by BIC was reversed by chemical inhibition of phosphatidylinositol 3-kinase (PI3-kinase) or overexpression of the p85 subunit of PI3-kinase. Either PD98059 or stable transfection with mitogen-activated protein kinase kinase-1 [MKK1(-)] or c-Jun N-terminal kinase 1 [JNK1(-)] also released the cell cycle arrest. Immunoblot analyses revealed that the levels of cyclins D1, A and B1 were partly or completely down-regulated by BIC, but cyclin E, p21 and p27 were minimally changed. Chemical inhibition and dominant negative mutant overexpression experiments revealed that either PI3-kinase inhibition or JNK1(-) transfection prevented the decreases in cyclin D1, A and B1 by BIC, indicating that the PI3-kinase and JNK1 pathways were associated with disruption of the cyclins. The pathway involving MKK1-extracellular signal-regulated kinase-1/2 (ERK1/2) was responsible for the suppression of cyclin A and B1, but not that of cyclin D1. The present study showed that BIC inhibited proliferation of Raw264.7 cells and that the pathways involving PI3-kinase and mitogen-activated protein kinases regulate the cell cycle arrest.
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Affiliation(s)
- Min Kyung Cho
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 151-742, South Korea
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23
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Zhang LJ, Chen YX, Chen ZX, Huang YH, Yu JP, Wang XZ. Effect of interleukin-10 and platelet-derived growth factor on expressions of matrix metalloproteinases-2 and tissue inhibitor of metalloproteinases-1 in rat fibrotic liver and cultured hepatic stellate cells. World J Gastroenterol 2004; 10:2574-9. [PMID: 15300910 PMCID: PMC4572167 DOI: 10.3748/wjg.v10.i17.2574] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2004] [Revised: 01/04/2004] [Accepted: 01/12/2004] [Indexed: 12/15/2022] Open
Abstract
AIM To examine the expressions of matrix metalloproteinases-2 (MMP-2) and tissue inhibitor of metalloproteinases-1 (TIMP-1) in rat fibrotic liver and in normal rat hepatic stellate cells, and to investigate the changes in their expressions in response to treatment with interleukin-10 (IL-10) and platelet-derived growth factor (PDGF). METHODS Rat models of CCl4-induced hepatic fibrosis were established and the liver tissues were sampled from the rats with or without IL-10 treatment, and also from the control rats. The expressions of MMP-2 and TIMP-1 in liver tissues were detected by S-P immunohistochemistry, and their expression intensities were evaluated in different groups. Hepatic stellate cells (HSCs) were isolated from normal rat and cultured in vitro prior to exposure to PDGF treatment or co-treatment with IL-10 and PDGF. MMP-2 and TIMP-1 levels were measured by semi-quantitative reverse transcriptional polymerase chain reaction (RT-PCR). RESULTS CCl4- induced rat hepatic fibrosis models were successfully established. The positive expressions of MMP-2 and TIMP-1 increased obviously with the development of hepatic fibrosis, especially in untreated model group (84.0% and 92.0%, P<0.01). The positive signals decreased significantly following IL-10 treatment (39.3% and 71.4%, P<0.01 and P<0.05) in a time-dependent manner. TIMP-1 mRNA in PDGF-treated group was significantly increased time-dependently in comparison with that of the control group, but PDGF did not obviously affect MMP-2 expression. No difference was noted in TIMP-1 and MMP-2 expressions in HSCs after IL-10 and PDGF treatment (P>0.05). CONCLUSION MMP-2 and TIMP-1 expressions increase in liver tissues with the development of fibrosis, which can be inhibited by exogenous IL-10 inhibitor. PDGF induces the up-regulation of TIMP-1 but not MMP-2 in the HSCs. IL-10 inhibits TIMP-1 and MMP-2 expressions in HSCs induced by PDGF.
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Affiliation(s)
- Li-Juan Zhang
- Department of Gastroenterology, People's Hospital, Medical School of Wuhan University, Hubei Province, China
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24
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Takahra T, Smart DE, Oakley F, Mann DA. Induction of myofibroblast MMP-9 transcription in three-dimensional collagen I gel cultures: regulation by NF-kappaB, AP-1 and Sp1. Int J Biochem Cell Biol 2004; 36:353-63. [PMID: 14643899 DOI: 10.1016/s1357-2725(03)00260-7] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Chronic liver injury leads to a progressive wound healing response that eventually results in hepatic fibrosis characterised by net deposition of fibrillar extracellular matrix (ECM) and a qualitative shift from type IV to type I/III collagen. The pivotal cellular event underlying this response is hepatic stellate cell (HSC) activation towards a myofibroblast-like phenotype. Activated HSC contribute to ECM remodelling via secretion of type I/III collagens and matrix metalloproteinases (MMPs). Previous studies showed that three-dimensional (3D) contact of activated HSC with type I collagen further stimulates the ECM remodelling properties of HSC by inducing the type IV gelatinase, MMP-9. The aim of the current study was to confirm transcriptional activation of the MMP-9 gene and identify transcription factors regulating this response. Gelatin zymography and Northern blotting were used to confirm induction of MMP-9 protein and mRNA expression in primary rat HSC cultured in a three-dimensional collagen I gel lattice. MMP-9 promoter studies in transfected HSC and electrophoretic mobility shift assay (EMSA) were employed to study transcriptional events. Both NF-kappaB and AP-1 DNA were induced in HSC cultured in 3D collagen I gels and binding sites for these factors in the MMP-9 promoter were crucial for induction of transcription. By contrast removal of an Sp1 site in the promoter enhanced transcription, while over-expression of either Sp1 or Sp3 repressed transcription. It is concluded that 3D contact of activated HSC with collagen I stimulates MMP-9 expression by elevating NF-kappaB and AP-1 activities which are able to overcome the repressive influence of Sp1/Sp3 on MMP-9 gene transcription.
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Affiliation(s)
- Terumi Takahra
- Third Department of Internal Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, 930-0194, Toyama, Japan
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25
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Lee I, Ahn JS, Hendricks TR, Rubner MF, Hammond PT. Patterned and controlled polyelectrolyte fractal growth and aggregations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:2478-2483. [PMID: 15835713 DOI: 10.1021/la035805+] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two-dimensional patterned and controlled polyelectrolyte aggregations (e.g., tree-like ramified structures) created by microcontact printing have been demonstrated and discussed. Polyelectrolyte-micropatterned aggregations on surfaces were controlled by the micropattern size and shape of PDMS stamps. The formation of aggregates was dependent on the ink and surface conditions, and the aggregates consisted of two distinct layers; strongly adsorbed, primary uniform layers and weakly adsorbed, secondary aggregation layers positioned on top of the primary layers. The adsorption of the primary layers was strong enough not to be washed away, while the aggregated secondary layers were easily removed by washing. The aggregation of secondary layers showed typical tree-like ramified structures of fractal growth and aggregation. Directional and confined stamping led to directing and confining the growth of the fractal polyelectrolyte clusters, respectively. The micropatterned primary uniform layers were not removed by extensive washing, and they were identified by selective nickel plating and charged particle selective adsorption in which the surface formed positive and negative micropatterns. These functional and patterned surfaces have great potentials for advanced devices and sensors.
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Affiliation(s)
- Ilsoon Lee
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, USA.
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26
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Imai K, Sato M, Sato T, Kojima N, Miura M, Higashi N, Wang DR, Suzuki S, Senoo H. Intercellular Adhesive Structures Between Stellate Cells - An Analysis in Cultured Human Hepatic Stellate Cells. COMPARATIVE HEPATOLOGY 2004; 3 Suppl 1:S13. [PMID: 14960165 PMCID: PMC2410236 DOI: 10.1186/1476-5926-2-s1-s13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
To investigate whether or not hepatic stellate cells can form intercellular junctions with each other, we cultured human stellate cells (LI90) on different kinds of substrata. Intercellular junctions were detected between these cultured stellate cells by transmission electron microscopy (TEM). The molecular components of the intercellular adhesive structures were identified by immunofluorescence microscopy. Immunofluorescence for cadherin and catenins was detected at the adhesion sites between the cultured stellate cells. Thus, the intercellular junctions were indicated to be adherens junctions at the molecular level. The junctions developed in the cultured stellate cells irrespective of the type of substratum. These data suggest that the junctional formation between the stellate cells occurs in vivo as well as in vitro.
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Affiliation(s)
- Katsuyuki Imai
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Mitsuru Sato
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Takeya Sato
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Naosuke Kojima
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Mitsutaka Miura
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Nobuyo Higashi
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Da-Ren Wang
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Shinsuke Suzuki
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Haruki Senoo
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
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27
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Higashi N, Imai K, Sato M, Sato T, Kojima N, Miura M, Wold HL, Moskaug JØ, Berg T, Norum KR, Roos N, Wake K, Blomhoff R, Senoo H. Intralobular Distribution of Vitamin A-Storing Lipid Droplets in Hepatic Stellate Cells with Special Reference to Polar Bear and Arctic Fox. COMPARATIVE HEPATOLOGY 2004; 3 Suppl 1:S16. [PMID: 14960168 PMCID: PMC2409438 DOI: 10.1186/1476-5926-2-s1-s16] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We examined the liver of adult polar bears, arctic foxes, and rats by gold chloride staining, fluorescence microscopy for the detection of autofluorescence of vitamin A, hematoxylin-eosin staining, staining with Masson's trichrome, Ishii and Ishii's silver impregnation, and transmission electron microscopical morphometry. The liver lobules of the arctic animals showed a zonal gradient in the storage of vitamin A. The density (i.e., cell number per area) of hepatic stellate cells was essentially the same among the zones. These results indicate that the hepatic stellate cells of the polar bears and arctic foxes possess heterogeneity of vitamin A-storing capacity in their liver lobules.
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Affiliation(s)
- Nobuyo Higashi
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Katsuyuki Imai
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Mitsuru Sato
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Takeya Sato
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Naosuke Kojima
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Mitsutaka Miura
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
| | - Heidi L Wold
- Institute for Nutrition Research, Faculty of Medicine, University of Oslo, Norway
| | - Jan Øivind Moskaug
- Institute for Nutrition Research, Faculty of Medicine, University of Oslo, Norway
| | - Trond Berg
- Division of Molecular Biology, Institute of Biology, University of Oslo, Norway
| | - Kaare R Norum
- Institute for Nutrition Research, Faculty of Medicine, University of Oslo, Norway
| | - Norbert Roos
- Electronmicroscopical Unit for Biological Sciences, Faculty of Mathematics and Natural Sciences, University of Oslo, Norway
| | - Kenjiro Wake
- Liver Research Unit, Minophagen Pharmaceutical Co. Ltd., Tokyo 160-0004, Japan
| | - Rune Blomhoff
- Institute for Nutrition Research, Faculty of Medicine, University of Oslo, Norway
| | - Haruki Senoo
- Department of Anatomy, Akita University School of Medicine, Akita 010-8543, Japan
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28
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Abstract
The effects of extracellular matrix (ECM) components on the outcomes of alphavirus interaction with cells are not known. Studies that address such interactions have to address several methodological difficulties, including: the survival of the cells within the matrix; the passage of the virus through the matrix to infect embedded cells; and the dissociation of cells and matrix into single-cell suspension, before and after virus infection, for quantitative analysis. Herein, these issues were addressed in the context of a model system of collagen as the ECM component, baby hamster kidney (BHK) cells, and Sindbis virus. The outcomes of Sindbis virus infection of BHK cells, grown in three-dimensional (3D) collagen gel versus on plastic, and on two-dimensional (2D) collagen versus bovine serum albumin (BSA)-coated surfaces were compared. Cell morphology was more slender in 3D and on 2D collagen than on plastic or BSA-coated surfaces. The cells were able to survive in the 3D environment. Using Sindbis virus carrying the green fluorescent protein gene, the virions were found to be capable of penetrating the 3D collagen matrix and infecting the cells. There was more infectious virus in cultures of cells in 3D and on 2D collagen than on plastic or BSA-coated surfaces, respectively. Higher virus titers from cells on 2D collagen compared to BSA-coated surfaces was not associated with uninfected cell number or viability but with increased cell survival after infection. Infected cells on BSA surfaces became detached, while those on 2D collagen remained attached. These experiments establish procedures for analysis of interaction of collagen, BHK cells, and Sindbis virus and suggest that collagen increases infectious Sindbis virus titers from BHK cells by enhancing post-infection cell survival.
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Affiliation(s)
- Dzung C Thach
- Center for Bio/Molecular Science and Engineering, Code 6910, Naval Research Laboratory, 4555 Overlook Avenue SW Building 30, Washington, DC 20375, USA.
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29
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Higashi N, Senoo H. Distribution of vitamin A-storing lipid droplets in hepatic stellate cells in liver lobules--a comparative study. THE ANATOMICAL RECORD. PART A, DISCOVERIES IN MOLECULAR, CELLULAR, AND EVOLUTIONARY BIOLOGY 2003; 271:240-8. [PMID: 12552640 DOI: 10.1002/ar.a.10036] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
To investigate the storage mechanisms of vitamin A, we examined the liver of adult polar bears and arctic foxes, which physiologically store a large amount of vitamin A, by high-performance liquid chromatography (HPLC), transmission electron microscopy (TEM) morphometry, gold chloride staining, fluorescence microscopy for the detection of autofluorescence of vitamin A, staining with hematoxylin-eosin (H&E), Masson's trichrome, and Ishii and Ishii's silver impregnation. HPLC revealed that the polar bears and arctic foxes contained 1.8-1.9 x 10(4) nmol total retinol (retinol plus retinyl esters) per gram liver. In the arctic foxes, the composition of the retinyl esters was found to be 51.1% palmitate, 26.6% oleate, 15.4% stearate, and 7% linoleate. The hepatic stellate cells of the arctic animals were demonstrated by TEM to contain the bulk of the vitamin A-lipid droplets in their cytoplasm. The liver lobules of the arctic animals showed a zonal gradient in the storage of vitamin A. The gradient was expressed as a symmetric crescendo-decrescendo profile starting at the periportal zone, peaking at the middle zone, and sloping down toward the central zone in the liver lobule. The density (i.e., cell number per area) of hepatic stellate cells was essentially the same among the zones. The gradient and the composition of the retinyl esters in storing vitamin A were not changed by differences in the vitamin A amount in the livers. These results indicate that the heterogeneity of vitamin A-storage capacity in hepatic stellate cells of arctic foxes and polar bears is genetically determined.
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Affiliation(s)
- Nobuyo Higashi
- Department of Anatomy, Akita University School of Medicine, Akita, Japan
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Cho MK, Suh SH, Kim SG. JunB/AP-1 and NF-kappa B-mediated induction of nitric oxide synthase by bovine type I collagen in serum-stimulated murine macrophages. Nitric Oxide 2002; 6:319-32. [PMID: 12009850 DOI: 10.1006/niox.2001.0415] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Type I collagen comprises the majority of the total body collagens. In particular, bovine type I collagen is utilized for medical purposes and used widely in a variety of cell culture models as a fibrous component of extracellular matrix. This study was designed to explore the effects of type I collagen on the expression of inducible nitric oxide synthase (iNOS) in serum-stimulated Raw264.7 cells and to study the molecular mechanistic basis. Bovine, but not rat or murine, type I collagen increased NO production in serum-stimulated cells, which resulted from the induction of iNOS, as monitored by Northern and Western blot analyses. Bovine type I collagen in combination with serum activated JunB and JunB/AP-1 transcription complex, as evidenced by supershift and immunodepletion of the retarded AP-1 band with anti-JunB antibody. AP-1 complex was immunodepleted in part by anti-c-Jun or anti-JunD antibody. Extracellular signal-regulated kinase1/2 (ERK1/2), p38 kinase, and c-Jun N-terminal kinase (JNK) were all activated by bovine type I collagen in serum-stimulated cells. PD98059, but not SB203580 or JNK1(-) transfection, inhibited both ERK1/2 phosphorylation and JunB/AP-1 activation. Either PD98059 or MKK1(-) transfection suppressed the iNOS induction. The induction of iNOS accompanied activation of NF-kappa B with degradation of I-kappa B alpha. AP-1 and/or NF-kappa B decoy oligonucleotides and pyrrolidine dithiocarbamate suppressed the iNOS induction, which confirmed involvement of AP-1 and NF-kappa B as transcription factors. These results demonstrated that bovine type I collagen induces iNOS in serum-stimulated murine macrophages through JunB/AP-1 and NF-kappa B activation and that activation of ERK1/2 plays an essential role in JunB/AP-1 activation.
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Affiliation(s)
- Min Kyung Cho
- National Research Laboratory (MDT), College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, South Korea
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